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From: "Debbie Garside" <debbie@ictmarketing.co.uk>
To: <addison@yahoo-inc.com>,
	"'Marion Gunn'" <mgunn@egt.ie>
Subject: RE: [Ltru] Updated draft-4646bis...
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Addison wrote:

> A tag can be valid yet meaningless.

I don't really like this as it seems, on the face of it, a contradiction in
terms.  I would propose one of the following:

---
A tag can be well formed yet meaningless.

A tag can be well formed in terms of syntax, and thus valid, yet meaningless
in terms of its attributes. For example, ... 

---

Best

Debbie

> -----Original Message-----
> From: Addison Phillips [mailto:addison@yahoo-inc.com] 
> Sent: 31 July 2007 16:52
> To: Marion Gunn
> Cc: LTRU Working Group
> Subject: Re: [Ltru] Updated draft-4646bis...
> 
> Marion Gunn wrote:
>  >
>  > However, here goes with one more attempt:
>  >
>  > "For example, although a tag such as 'ar-Cyrl-CO' (Arabic, 
> as used in  > Columbia,  > written in Cyrillic script) is 
> valid, it is [most] unlikely to be of  > use, because  > such 
> combination of attributes is unlikely to occur in actual 
> language  > use."
>  >
> 
> I note that it is useful to look at the actual editor's copy 
> when suggesting minor editorial changes. Upon reflection, I 
> found the current sentence to be a bit of a run-on. I've 
> taken your suggestion of 'unlikely' and edited further such 
> that the paragraph now reads:
> 
> <t>Validity of a tag is not everything. A tag can be valid 
> yet meaningless. This is unavoidable with a generative system 
> like the language subtag mechanism. For example, a tag such 
> as "ar-Cyrl-CO" 
> (Arabic, Cyrillic script, as used in Colombia) is perfectly valid. 
> However, it is unlikely to be a useful tag, as it represents 
> an unlikely combination of language attributes that is 
> probably unrelated to any real language usage.</t>
> 
> After five minutes from now, you will need to comment on 
> draft-08. I'm always happy to consider editorial changes that 
> improve the text.
> 
> Addison
> 
> --
> Addison Phillips
> Globalization Architect -- Yahoo! Inc.
> Chair -- W3C Internationalization Core WG
> 
> Internationalization is an architecture.
> It is not a feature.
> 
> 
> _______________________________________________
> Ltru mailing list
> Ltru@ietf.org
> https://www1.ietf.org/mailman/listinfo/ltru
> 
> 






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From ltru-bounces@ietf.org Wed Aug 01 10:38:59 2007
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From: Marion Gunn <mgunn@egt.ie>
Subject: Re: [Ltru] Updated draft-4646bis...
Date: Wed, 1 Aug 2007 15:39:15 +0000
To: LTRU Working Group <ltru@ietf.org>
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In that case, "well-formed" (although I see nothing wrong with =20
Addison's latest version, since even a bank account number can be, at =20=

the same time, both "valid" and "meaningless" if no actual bank =20
account exists).
mg
On 1 Aug 2007, at 12:43, Debbie Garside:

> Addison wrote:
>
>
>> A tag can be valid yet meaningless.
>>
>
> I don't really like this as it seems, on the face of it, a =20
> contradiction in
> terms.  I would propose one of the following:
>
> ---
> A tag can be well formed yet meaningless.
>
> A tag can be well formed in terms of syntax, and thus valid, yet =20
> meaningless
> in terms of its attributes. For example, ...
>
> ---
>
> Best
>
> Debbie
>
>
>> -----Original Message-----
>> From: Addison Phillips [mailto:addison@yahoo-inc.com]
>> Sent: 31 July 2007 16:52
>> To: Marion Gunn
>> Cc: LTRU Working Group
>> Subject: Re: [Ltru] Updated draft-4646bis...
>>
>> Marion Gunn wrote:
>>
>>>
>>> However, here goes with one more attempt:
>>>
>>> "For example, although a tag such as 'ar-Cyrl-CO' (Arabic,
>>>
>> as used in  > Columbia,  > written in Cyrillic script) is
>> valid, it is [most] unlikely to be of  > use, because  > such
>> combination of attributes is unlikely to occur in actual
>> language  > use."
>>
>>>
>>>
>>
>> I note that it is useful to look at the actual editor's copy
>> when suggesting minor editorial changes. Upon reflection, I
>> found the current sentence to be a bit of a run-on. I've
>> taken your suggestion of 'unlikely' and edited further such
>> that the paragraph now reads:
>>
>> <t>Validity of a tag is not everything. A tag can be valid
>> yet meaningless. This is unavoidable with a generative system
>> like the language subtag mechanism. For example, a tag such
>> as "ar-Cyrl-CO"
>> (Arabic, Cyrillic script, as used in Colombia) is perfectly valid.
>> However, it is unlikely to be a useful tag, as it represents
>> an unlikely combination of language attributes that is
>> probably unrelated to any real language usage.</t>
>>
>> After five minutes from now, you will need to comment on
>> draft-08. I'm always happy to consider editorial changes that
>> improve the text.
>>
>> Addison
>>
>> --
>> Addison Phillips
>> Globalization Architect -- Yahoo! Inc.
>> Chair -- W3C Internationalization Core WG
>>
>> Internationalization is an architecture.
>> It is not a feature.
>>
>>
>> _______________________________________________
>> Ltru mailing list
>> Ltru@ietf.org
>> https://www1.ietf.org/mailman/listinfo/ltru
>>
>>
>>
>
>
>
>
>

- -
Marion Gunn * EGTeo (Estab.1991)
27 P=E1irc an Fh=E9ithlinn, Baile an
Bh=F3thair, Co. =C1tha Cliath, =C9ire.
* mgunn@egt.ie * eamonn@egt.ie *



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From ltru-bounces@ietf.org Wed Aug 01 11:33:21 2007
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To: <debbie@ictmarketing.co.uk>, <addison@yahoo-inc.com>,
	"'Marion Gunn'" <mgunn@egt.ie>
Subject: RE: [Ltru] Updated draft-4646bis...
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I agree!

David

 _____________________________________________________
 
Dr David Dalby 
The Linguasphere Observatory
Hebron
Whitland
Wales
SA34 0XT
 
-----Original Message-----
From: Debbie Garside [mailto:debbie@ictmarketing.co.uk] 
Sent: 01 August 2007 13:44
To: addison@yahoo-inc.com; 'Marion Gunn'
Cc: 'LTRU Working Group'
Subject: RE: [Ltru] Updated draft-4646bis...

Addison wrote:

> A tag can be valid yet meaningless.

I don't really like this as it seems, on the face of it, a contradiction in
terms.  I would propose one of the following:

---
A tag can be well formed yet meaningless.

A tag can be well formed in terms of syntax, and thus valid, yet meaningless
in terms of its attributes. For example, ... 

---

Best

Debbie

> -----Original Message-----
> From: Addison Phillips [mailto:addison@yahoo-inc.com] 
> Sent: 31 July 2007 16:52
> To: Marion Gunn
> Cc: LTRU Working Group
> Subject: Re: [Ltru] Updated draft-4646bis...
> 
> Marion Gunn wrote:
>  >
>  > However, here goes with one more attempt:
>  >
>  > "For example, although a tag such as 'ar-Cyrl-CO' (Arabic, 
> as used in  > Columbia,  > written in Cyrillic script) is 
> valid, it is [most] unlikely to be of  > use, because  > such 
> combination of attributes is unlikely to occur in actual 
> language  > use."
>  >
> 
> I note that it is useful to look at the actual editor's copy 
> when suggesting minor editorial changes. Upon reflection, I 
> found the current sentence to be a bit of a run-on. I've 
> taken your suggestion of 'unlikely' and edited further such 
> that the paragraph now reads:
> 
> <t>Validity of a tag is not everything. A tag can be valid 
> yet meaningless. This is unavoidable with a generative system 
> like the language subtag mechanism. For example, a tag such 
> as "ar-Cyrl-CO" 
> (Arabic, Cyrillic script, as used in Colombia) is perfectly valid. 
> However, it is unlikely to be a useful tag, as it represents 
> an unlikely combination of language attributes that is 
> probably unrelated to any real language usage.</t>
> 
> After five minutes from now, you will need to comment on 
> draft-08. I'm always happy to consider editorial changes that 
> improve the text.
> 
> Addison
> 
> --
> Addison Phillips
> Globalization Architect -- Yahoo! Inc.
> Chair -- W3C Internationalization Core WG
> 
> Internationalization is an architecture.
> It is not a feature.
> 
> 
> _______________________________________________
> Ltru mailing list
> Ltru@ietf.org
> https://www1.ietf.org/mailman/listinfo/ltru
> 
> 






_______________________________________________
Ltru mailing list
Ltru@ietf.org
https://www1.ietf.org/mailman/listinfo/ltru




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From ltru-bounces@ietf.org Wed Aug 01 11:42:46 2007
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From: "David Dalby" <daviddalby@linguasphere.info>
To: "'David Dalby'" <daviddalby@linguasphere.info>,
	<debbie@ictmarketing.co.uk>, <addison@yahoo-inc.com>,
	"'Marion Gunn'" <mgunn@egt.ie>
Subject: RE: [Ltru] Updated draft-4646bis...
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Why not(?):

A langtag may be formally valid but remain unrealized in meaning, e.g. ....


-----Original Message-----
From: David Dalby [mailto:daviddalby@linguasphere.info] 
Sent: 01 August 2007 16:33
To: debbie@ictmarketing.co.uk; addison@yahoo-inc.com; 'Marion Gunn'
Cc: 'LTRU Working Group'
Subject: RE: [Ltru] Updated draft-4646bis...

I agree!

David

 _____________________________________________________
 
Dr David Dalby 
The Linguasphere Observatory
Hebron
Whitland
Wales
SA34 0XT
 
-----Original Message-----
From: Debbie Garside [mailto:debbie@ictmarketing.co.uk] 
Sent: 01 August 2007 13:44
To: addison@yahoo-inc.com; 'Marion Gunn'
Cc: 'LTRU Working Group'
Subject: RE: [Ltru] Updated draft-4646bis...

Addison wrote:

> A tag can be valid yet meaningless.

I don't really like this as it seems, on the face of it, a contradiction in
terms.  I would propose one of the following:

---
A tag can be well formed yet meaningless.

A tag can be well formed in terms of syntax, and thus valid, yet meaningless
in terms of its attributes. For example, ... 

---

Best

Debbie

> -----Original Message-----
> From: Addison Phillips [mailto:addison@yahoo-inc.com] 
> Sent: 31 July 2007 16:52
> To: Marion Gunn
> Cc: LTRU Working Group
> Subject: Re: [Ltru] Updated draft-4646bis...
> 
> Marion Gunn wrote:
>  >
>  > However, here goes with one more attempt:
>  >
>  > "For example, although a tag such as 'ar-Cyrl-CO' (Arabic, 
> as used in  > Columbia,  > written in Cyrillic script) is 
> valid, it is [most] unlikely to be of  > use, because  > such 
> combination of attributes is unlikely to occur in actual 
> language  > use."
>  >
> 
> I note that it is useful to look at the actual editor's copy 
> when suggesting minor editorial changes. Upon reflection, I 
> found the current sentence to be a bit of a run-on. I've 
> taken your suggestion of 'unlikely' and edited further such 
> that the paragraph now reads:
> 
> <t>Validity of a tag is not everything. A tag can be valid 
> yet meaningless. This is unavoidable with a generative system 
> like the language subtag mechanism. For example, a tag such 
> as "ar-Cyrl-CO" 
> (Arabic, Cyrillic script, as used in Colombia) is perfectly valid. 
> However, it is unlikely to be a useful tag, as it represents 
> an unlikely combination of language attributes that is 
> probably unrelated to any real language usage.</t>
> 
> After five minutes from now, you will need to comment on 
> draft-08. I'm always happy to consider editorial changes that 
> improve the text.
> 
> Addison
> 
> --
> Addison Phillips
> Globalization Architect -- Yahoo! Inc.
> Chair -- W3C Internationalization Core WG
> 
> Internationalization is an architecture.
> It is not a feature.
> 
> 
> _______________________________________________
> Ltru mailing list
> Ltru@ietf.org
> https://www1.ietf.org/mailman/listinfo/ltru
> 
> 






_______________________________________________
Ltru mailing list
Ltru@ietf.org
https://www1.ietf.org/mailman/listinfo/ltru




_______________________________________________
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Ltru@ietf.org
https://www1.ietf.org/mailman/listinfo/ltru




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From ltru-bounces@ietf.org Wed Aug 01 11:48:21 2007
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From: Stephane Bortzmeyer <bortzmeyer@nic.fr>
To: Debbie Garside <debbie@ictmarketing.co.uk>
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Subject: [Ltru] The third level of conformance (Was: Updated draft-4646bis...
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On Wed, Aug 01, 2007 at 01:43:40PM +0100,
 Debbie Garside <debbie@ictmarketing.co.uk> wrote 
 a message of 83 lines which said:

> I would propose one of the following:
> 
> ---
> A tag can be well formed yet meaningless.
> 
> A tag can be well formed in terms of syntax, and thus valid, yet meaningless
> in terms of its attributes. For example, ... 

Sorry, neither of these sentences is correct in the context of
4646bis-07.

Being "well-formed" and being "valid" are two different things
(section 2.2.9 of 4646bis-07). Thus saying "A tag can be well formed
in terms of syntax, and thus valid" is wrong.

And the first sentence is not strong enough. ar-Cyrl-CO is well-formed
but it is also valid (in the 4646bis-07 sense of the word, defined in
section 2.2.9). 

The discussion is how we should label the informal "third level",
after well-formedness and validity. Meaningfulness? Reality? 


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You have to read the document. The terms "valid" and "well-formed" have 
a different meaning in the context of RFC 4646/4646bis. The term "valid" 
was chosen carefully in this context.

Mark and others are correct that every tag has *a* meaning (we even 
spell out the one for the "meaningless" tag in the example). But that 
does not mean that every tag is *meaningful*.

How about this version instead:


<t>Validity of a tag is not everything. While every valid tag has a 
meaning, it might not represent any real language usage. This is 
unavoidable in a system in which subtags can be combined freely. For 
example, tags such as "ar-Cyrl-CO" (Arabic, Cyrillic script, as used in 
Colombia ) or "tlh-Kore-AQ-fonipa" (Klingon, Korean script, as used in 
Antarctica, IPA phonetic transcription) are both valid and unlikely to 
represent a useful combination of language attributes.</t>

Addison

David Dalby wrote:
> I agree!
> 
> David
> 
>  _____________________________________________________
>  
> Dr David Dalby 
> The Linguasphere Observatory
> Hebron
> Whitland
> Wales
> SA34 0XT
>  
> -----Original Message-----
> From: Debbie Garside [mailto:debbie@ictmarketing.co.uk] 
> Sent: 01 August 2007 13:44
> To: addison@yahoo-inc.com; 'Marion Gunn'
> Cc: 'LTRU Working Group'
> Subject: RE: [Ltru] Updated draft-4646bis...
> 
> Addison wrote:
> 
>> A tag can be valid yet meaningless.
> 
> I don't really like this as it seems, on the face of it, a contradiction in
> terms.  I would propose one of the following:
> 
> ---
> A tag can be well formed yet meaningless.
> 
> A tag can be well formed in terms of syntax, and thus valid, yet meaningless
> in terms of its attributes. For example, ... 
> 
> ---
> 
> Best
> 
> Debbie
> 
>> -----Original Message-----
>> From: Addison Phillips [mailto:addison@yahoo-inc.com] 
>> Sent: 31 July 2007 16:52
>> To: Marion Gunn
>> Cc: LTRU Working Group
>> Subject: Re: [Ltru] Updated draft-4646bis...
>>
>> Marion Gunn wrote:
>>  >
>>  > However, here goes with one more attempt:
>>  >
>>  > "For example, although a tag such as 'ar-Cyrl-CO' (Arabic, 
>> as used in  > Columbia,  > written in Cyrillic script) is 
>> valid, it is [most] unlikely to be of  > use, because  > such 
>> combination of attributes is unlikely to occur in actual 
>> language  > use."
>>  >
>>
>> I note that it is useful to look at the actual editor's copy 
>> when suggesting minor editorial changes. Upon reflection, I 
>> found the current sentence to be a bit of a run-on. I've 
>> taken your suggestion of 'unlikely' and edited further such 
>> that the paragraph now reads:
>>
>> <t>Validity of a tag is not everything. A tag can be valid 
>> yet meaningless. This is unavoidable with a generative system 
>> like the language subtag mechanism. For example, a tag such 
>> as "ar-Cyrl-CO" 
>> (Arabic, Cyrillic script, as used in Colombia) is perfectly valid. 
>> However, it is unlikely to be a useful tag, as it represents 
>> an unlikely combination of language attributes that is 
>> probably unrelated to any real language usage.</t>
>>
>> After five minutes from now, you will need to comment on 
>> draft-08. I'm always happy to consider editorial changes that 
>> improve the text.
>>
>> Addison
>>
>> --
>> Addison Phillips
>> Globalization Architect -- Yahoo! Inc.
>> Chair -- W3C Internationalization Core WG
>>
>> Internationalization is an architecture.
>> It is not a feature.
>>
>>
>> _______________________________________________
>> Ltru mailing list
>> Ltru@ietf.org
>> https://www1.ietf.org/mailman/listinfo/ltru
>>
>>
> 
> 
> 
> 
> 
> 
> _______________________________________________
> Ltru mailing list
> Ltru@ietf.org
> https://www1.ietf.org/mailman/listinfo/ltru
> 
> 

-- 
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.


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Date: Wed, 1 Aug 2007 09:06:01 -0700
From: "Mark Davis" <mark.davis@icu-project.org>
To: "Addison Phillips" <addison@yahoo-inc.com>
Subject: Re: [Ltru] Updated draft-4646bis...
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That's fine by me.

On 8/1/07, Addison Phillips <addison@yahoo-inc.com> wrote:
>
> You have to read the document. The terms "valid" and "well-formed" have
> a different meaning in the context of RFC 4646/4646bis. The term "valid"
> was chosen carefully in this context.
>
> Mark and others are correct that every tag has *a* meaning (we even
> spell out the one for the "meaningless" tag in the example). But that
> does not mean that every tag is *meaningful*.
>
> How about this version instead:
>
>
> <t>Validity of a tag is not everything. While every valid tag has a
> meaning, it might not represent any real language usage. This is
> unavoidable in a system in which subtags can be combined freely. For
> example, tags such as "ar-Cyrl-CO" (Arabic, Cyrillic script, as used in
> Colombia ) or "tlh-Kore-AQ-fonipa" (Klingon, Korean script, as used in
> Antarctica, IPA phonetic transcription) are both valid and unlikely to
> represent a useful combination of language attributes.</t>
>
> Addison
>
> David Dalby wrote:
> > I agree!
> >
> > David
> >
> >  _____________________________________________________
> >
> > Dr David Dalby
> > The Linguasphere Observatory
> > Hebron
> > Whitland
> > Wales
> > SA34 0XT
> >
> > -----Original Message-----
> > From: Debbie Garside [mailto:debbie@ictmarketing.co.uk]
> > Sent: 01 August 2007 13:44
> > To: addison@yahoo-inc.com; 'Marion Gunn'
> > Cc: 'LTRU Working Group'
> > Subject: RE: [Ltru] Updated draft-4646bis...
> >
> > Addison wrote:
> >
> >> A tag can be valid yet meaningless.
> >
> > I don't really like this as it seems, on the face of it, a contradiction
> in
> > terms.  I would propose one of the following:
> >
> > ---
> > A tag can be well formed yet meaningless.
> >
> > A tag can be well formed in terms of syntax, and thus valid, yet
> meaningless
> > in terms of its attributes. For example, ...
> >
> > ---
> >
> > Best
> >
> > Debbie
> >
> >> -----Original Message-----
> >> From: Addison Phillips [mailto:addison@yahoo-inc.com]
> >> Sent: 31 July 2007 16:52
> >> To: Marion Gunn
> >> Cc: LTRU Working Group
> >> Subject: Re: [Ltru] Updated draft-4646bis...
> >>
> >> Marion Gunn wrote:
> >>  >
> >>  > However, here goes with one more attempt:
> >>  >
> >>  > "For example, although a tag such as 'ar-Cyrl-CO' (Arabic,
> >> as used in  > Columbia,  > written in Cyrillic script) is
> >> valid, it is [most] unlikely to be of  > use, because  > such
> >> combination of attributes is unlikely to occur in actual
> >> language  > use."
> >>  >
> >>
> >> I note that it is useful to look at the actual editor's copy
> >> when suggesting minor editorial changes. Upon reflection, I
> >> found the current sentence to be a bit of a run-on. I've
> >> taken your suggestion of 'unlikely' and edited further such
> >> that the paragraph now reads:
> >>
> >> <t>Validity of a tag is not everything. A tag can be valid
> >> yet meaningless. This is unavoidable with a generative system
> >> like the language subtag mechanism. For example, a tag such
> >> as "ar-Cyrl-CO"
> >> (Arabic, Cyrillic script, as used in Colombia) is perfectly valid.
> >> However, it is unlikely to be a useful tag, as it represents
> >> an unlikely combination of language attributes that is
> >> probably unrelated to any real language usage.</t>
> >>
> >> After five minutes from now, you will need to comment on
> >> draft-08. I'm always happy to consider editorial changes that
> >> improve the text.
> >>
> >> Addison
> >>
> >> --
> >> Addison Phillips
> >> Globalization Architect -- Yahoo! Inc.
> >> Chair -- W3C Internationalization Core WG
> >>
> >> Internationalization is an architecture.
> >> It is not a feature.
> >>
> >>
> >> _______________________________________________
> >> Ltru mailing list
> >> Ltru@ietf.org
> >> https://www1.ietf.org/mailman/listinfo/ltru
> >>
> >>
> >
> >
> >
> >
> >
> >
> > _______________________________________________
> > Ltru mailing list
> > Ltru@ietf.org
> > https://www1.ietf.org/mailman/listinfo/ltru
> >
> >
>
> --
> Addison Phillips
> Globalization Architect -- Yahoo! Inc.
> Chair -- W3C Internationalization Core WG
>
> Internationalization is an architecture.
> It is not a feature.
>
>
> _______________________________________________
> Ltru mailing list
> Ltru@ietf.org
> https://www1.ietf.org/mailman/listinfo/ltru
>



-- 
Mark

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That&#39;s fine by me.<br><br><div><span class="gmail_quote">On 8/1/07, <b class="gmail_sendername">Addison Phillips</b> &lt;<a href="mailto:addison@yahoo-inc.com">addison@yahoo-inc.com</a>&gt; wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
You have to read the document. The terms &quot;valid&quot; and &quot;well-formed&quot; have<br>a different meaning in the context of RFC 4646/4646bis. The term &quot;valid&quot;<br>was chosen carefully in this context.<br>
<br>Mark and others are correct that every tag has *a* meaning (we even<br>spell out the one for the &quot;meaningless&quot; tag in the example). But that<br>does not mean that every tag is *meaningful*.<br><br>How about this version instead:
<br><br><br>&lt;t&gt;Validity of a tag is not everything. While every valid tag has a<br>meaning, it might not represent any real language usage. This is<br>unavoidable in a system in which subtags can be combined freely. For
<br>example, tags such as &quot;ar-Cyrl-CO&quot; (Arabic, Cyrillic script, as used in<br>Colombia ) or &quot;tlh-Kore-AQ-fonipa&quot; (Klingon, Korean script, as used in<br>Antarctica, IPA phonetic transcription) are both valid and unlikely to
<br>represent a useful combination of language attributes.&lt;/t&gt;<br><br>Addison<br><br>David Dalby wrote:<br>&gt; I agree!<br>&gt;<br>&gt; David<br>&gt;<br>&gt;&nbsp;&nbsp;_____________________________________________________<br>
&gt;<br>&gt; Dr David Dalby<br>&gt; The Linguasphere Observatory<br>&gt; Hebron<br>&gt; Whitland<br>&gt; Wales<br>&gt; SA34 0XT<br>&gt;<br>&gt; -----Original Message-----<br>&gt; From: Debbie Garside [mailto:<a href="mailto:debbie@ictmarketing.co.uk">
debbie@ictmarketing.co.uk</a>]<br>&gt; Sent: 01 August 2007 13:44<br>&gt; To: <a href="mailto:addison@yahoo-inc.com">addison@yahoo-inc.com</a>; &#39;Marion Gunn&#39;<br>&gt; Cc: &#39;LTRU Working Group&#39;<br>&gt; Subject: RE: [Ltru] Updated draft-4646bis...
<br>&gt;<br>&gt; Addison wrote:<br>&gt;<br>&gt;&gt; A tag can be valid yet meaningless.<br>&gt;<br>&gt; I don&#39;t really like this as it seems, on the face of it, a contradiction in<br>&gt; terms.&nbsp;&nbsp;I would propose one of the following:
<br>&gt;<br>&gt; ---<br>&gt; A tag can be well formed yet meaningless.<br>&gt;<br>&gt; A tag can be well formed in terms of syntax, and thus valid, yet meaningless<br>&gt; in terms of its attributes. For example, ...<br>&gt;
<br>&gt; ---<br>&gt;<br>&gt; Best<br>&gt;<br>&gt; Debbie<br>&gt;<br>&gt;&gt; -----Original Message-----<br>&gt;&gt; From: Addison Phillips [mailto:<a href="mailto:addison@yahoo-inc.com">addison@yahoo-inc.com</a>]<br>&gt;&gt; Sent: 31 July 2007 16:52
<br>&gt;&gt; To: Marion Gunn<br>&gt;&gt; Cc: LTRU Working Group<br>&gt;&gt; Subject: Re: [Ltru] Updated draft-4646bis...<br>&gt;&gt;<br>&gt;&gt; Marion Gunn wrote:<br>&gt;&gt;&nbsp;&nbsp;&gt;<br>&gt;&gt;&nbsp;&nbsp;&gt; However, here goes with one more attempt:
<br>&gt;&gt;&nbsp;&nbsp;&gt;<br>&gt;&gt;&nbsp;&nbsp;&gt; &quot;For example, although a tag such as &#39;ar-Cyrl-CO&#39; (Arabic,<br>&gt;&gt; as used in&nbsp;&nbsp;&gt; Columbia,&nbsp;&nbsp;&gt; written in Cyrillic script) is<br>&gt;&gt; valid, it is [most] unlikely to be of&nbsp;&nbsp;&gt; use, because&nbsp;&nbsp;&gt; such
<br>&gt;&gt; combination of attributes is unlikely to occur in actual<br>&gt;&gt; language&nbsp;&nbsp;&gt; use.&quot;<br>&gt;&gt;&nbsp;&nbsp;&gt;<br>&gt;&gt;<br>&gt;&gt; I note that it is useful to look at the actual editor&#39;s copy<br>&gt;&gt; when suggesting minor editorial changes. Upon reflection, I
<br>&gt;&gt; found the current sentence to be a bit of a run-on. I&#39;ve<br>&gt;&gt; taken your suggestion of &#39;unlikely&#39; and edited further such<br>&gt;&gt; that the paragraph now reads:<br>&gt;&gt;<br>&gt;&gt; &lt;t&gt;Validity of a tag is not everything. A tag can be valid
<br>&gt;&gt; yet meaningless. This is unavoidable with a generative system<br>&gt;&gt; like the language subtag mechanism. For example, a tag such<br>&gt;&gt; as &quot;ar-Cyrl-CO&quot;<br>&gt;&gt; (Arabic, Cyrillic script, as used in Colombia) is perfectly valid.
<br>&gt;&gt; However, it is unlikely to be a useful tag, as it represents<br>&gt;&gt; an unlikely combination of language attributes that is<br>&gt;&gt; probably unrelated to any real language usage.&lt;/t&gt;<br>&gt;&gt;
<br>&gt;&gt; After five minutes from now, you will need to comment on<br>&gt;&gt; draft-08. I&#39;m always happy to consider editorial changes that<br>&gt;&gt; improve the text.<br>&gt;&gt;<br>&gt;&gt; Addison<br>&gt;&gt;
<br>&gt;&gt; --<br>&gt;&gt; Addison Phillips<br>&gt;&gt; Globalization Architect -- Yahoo! Inc.<br>&gt;&gt; Chair -- W3C Internationalization Core WG<br>&gt;&gt;<br>&gt;&gt; Internationalization is an architecture.<br>&gt;&gt; It is not a feature.
<br>&gt;&gt;<br>&gt;&gt;<br>&gt;&gt; _______________________________________________<br>&gt;&gt; Ltru mailing list<br>&gt;&gt; <a href="mailto:Ltru@ietf.org">Ltru@ietf.org</a><br>&gt;&gt; <a href="https://www1.ietf.org/mailman/listinfo/ltru">
https://www1.ietf.org/mailman/listinfo/ltru</a><br>&gt;&gt;<br>&gt;&gt;<br>&gt;<br>&gt;<br>&gt;<br>&gt;<br>&gt;<br>&gt;<br>&gt; _______________________________________________<br>&gt; Ltru mailing list<br>&gt; <a href="mailto:Ltru@ietf.org">
Ltru@ietf.org</a><br>&gt; <a href="https://www1.ietf.org/mailman/listinfo/ltru">https://www1.ietf.org/mailman/listinfo/ltru</a><br>&gt;<br>&gt;<br><br>--<br>Addison Phillips<br>Globalization Architect -- Yahoo! Inc.<br>Chair -- W3C Internationalization Core WG
<br><br>Internationalization is an architecture.<br>It is not a feature.<br><br><br>_______________________________________________<br>Ltru mailing list<br><a href="mailto:Ltru@ietf.org">Ltru@ietf.org</a><br><a href="https://www1.ietf.org/mailman/listinfo/ltru">
https://www1.ietf.org/mailman/listinfo/ltru</a><br></blockquote></div><br><br clear="all"><br>-- <br>Mark

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A New Internet-Draft is available from the on-line Internet-Drafts 
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This draft is a work item of the Language Tag Registry Update Working Group of the IETF.

	Title		: Tags for Identifying Languages
	Author(s)	: A. Phillips, M. Davis
	Filename	: draft-ietf-ltru-4646bis-07.txt
	Pages		: 74
	Date		: 2007-8-1
	
This document describes the structure, content, construction, and
   semantics of language tags for use in cases where it is desirable to
   indicate the language used in an information object.  It also
   describes how to register values for use in language tags and the
   creation of user-defined extensions for private interchange.

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From ltru-bounces@ietf.org Wed Aug 01 16:22:27 2007
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From: "David Dalby" <daviddalby@linguasphere.info>
To: "'Addison Phillips'" <addison@yahoo-inc.com>
Subject: RE: [Ltru] Updated draft-4646bis...
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Addison, You seem to have missed the second in my quick sequence of two
e-mails. What is wrong with the simple statement (?):

"A langtag may be formally valid but remain unrealized in meaning, e.g.
...."  This even allows for the unlikely event of its meaning becoming
realized.

Of course, the large majority of ALL potential langtags with subtags will
never be realized in meaning, but this very obvious point should surely be
dealt with as briefly as possible.

Regards, David

 

-----Original Message-----
From: Addison Phillips [mailto:addison@yahoo-inc.com] 
Sent: 01 August 2007 16:52
To: David Dalby
Cc: debbie@ictmarketing.co.uk; 'Marion Gunn'; 'LTRU Working Group'
Subject: Re: [Ltru] Updated draft-4646bis...

 

You have to read the document. The terms "valid" and "well-formed" have 

a different meaning in the context of RFC 4646/4646bis. The term "valid" 

was chosen carefully in this context.

 

Mark and others are correct that every tag has *a* meaning (we even 

spell out the one for the "meaningless" tag in the example). But that 

does not mean that every tag is *meaningful*.

 

How about this version instead:

 

 

<t>Validity of a tag is not everything. While every valid tag has a 

meaning, it might not represent any real language usage. This is 

unavoidable in a system in which subtags can be combined freely. For 

example, tags such as "ar-Cyrl-CO" (Arabic, Cyrillic script, as used in 

Colombia ) or "tlh-Kore-AQ-fonipa" (Klingon, Korean script, as used in 

Antarctica, IPA phonetic transcription) are both valid and unlikely to 

represent a useful combination of language attributes.</t>

 

Addison

 

David Dalby wrote:

> I agree!

> 

> David

> 

>  _____________________________________________________

>  

> Dr David Dalby 

> The Linguasphere Observatory

> Hebron

> Whitland

> Wales

> SA34 0XT

>  

> -----Original Message-----

> From: Debbie Garside [mailto:debbie@ictmarketing.co.uk] 

> Sent: 01 August 2007 13:44

> To: addison@yahoo-inc.com; 'Marion Gunn'

> Cc: 'LTRU Working Group'

> Subject: RE: [Ltru] Updated draft-4646bis...

> 

> Addison wrote:

> 

>> A tag can be valid yet meaningless.

> 

> I don't really like this as it seems, on the face of it, a contradiction
in

> terms.  I would propose one of the following:

> 

> ---

> A tag can be well formed yet meaningless.

> 

> A tag can be well formed in terms of syntax, and thus valid, yet
meaningless

> in terms of its attributes. For example, ... 

> 

> ---

> 

> Best

> 

> Debbie

> 

>> -----Original Message-----

>> From: Addison Phillips [mailto:addison@yahoo-inc.com] 

>> Sent: 31 July 2007 16:52

>> To: Marion Gunn

>> Cc: LTRU Working Group

>> Subject: Re: [Ltru] Updated draft-4646bis...

>> 

>> Marion Gunn wrote:

>>  >

>>  > However, here goes with one more attempt:

>>  >

>>  > "For example, although a tag such as 'ar-Cyrl-CO' (Arabic, 

>> as used in  > Columbia,  > written in Cyrillic script) is 

>> valid, it is [most] unlikely to be of  > use, because  > such 

>> combination of attributes is unlikely to occur in actual 

>> language  > use."

>>  >

>> 

>> I note that it is useful to look at the actual editor's copy 

>> when suggesting minor editorial changes. Upon reflection, I 

>> found the current sentence to be a bit of a run-on. I've 

>> taken your suggestion of 'unlikely' and edited further such 

>> that the paragraph now reads:

>> 

>> <t>Validity of a tag is not everything. A tag can be valid 

>> yet meaningless. This is unavoidable with a generative system 

>> like the language subtag mechanism. For example, a tag such 

>> as "ar-Cyrl-CO" 

>> (Arabic, Cyrillic script, as used in Colombia) is perfectly valid. 

>> However, it is unlikely to be a useful tag, as it represents 

>> an unlikely combination of language attributes that is 

>> probably unrelated to any real language usage.</t>

>> 

>> After five minutes from now, you will need to comment on 

>> draft-08. I'm always happy to consider editorial changes that 

>> improve the text.

>> 

>> Addison

>> 

>> --

>> Addison Phillips

>> Globalization Architect -- Yahoo! Inc.

>> Chair -- W3C Internationalization Core WG

>> 

>> Internationalization is an architecture.

>> It is not a feature.

>> 

>> 

>> _______________________________________________

>> Ltru mailing list

>> Ltru@ietf.org

>> https://www1.ietf.org/mailman/listinfo/ltru

>> 

>> 

> 

> 

> 

> 

> 

> 

> _______________________________________________

> Ltru mailing list

> Ltru@ietf.org

> https://www1.ietf.org/mailman/listinfo/ltru

> 

> 

 

-- 

Addison Phillips

Globalization Architect -- Yahoo! Inc.

Chair -- W3C Internationalization Core WG

 

Internationalization is an architecture.

It is not a feature.


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<p class=3DMsoPlainText><st1:place w:st=3D"on"><font size=3D2 =
face=3D"Courier New"><span
 style=3D'font-size:10.0pt'>Addison</span></font></st1:place>, You seem =
to have
missed the second in my quick sequence of two e-mails. What is wrong =
with the
simple statement (?):<o:p></o:p></p>

<p class=3DMsoPlainText style=3D'margin-right:-11.9pt'><font size=3D2
face=3D"Courier New"><span style=3D'font-size:10.0pt'>&quot;A langtag =
may be
formally valid but remain unrealized in meaning, e.g. ....&quot;&nbsp; =
This
even allows for the unlikely event of its meaning becoming =
realized.<o:p></o:p></span></font></p>

<p class=3DMsoPlainText style=3D'margin-right:-11.9pt'><font size=3D2
face=3D"Courier New"><span style=3D'font-size:10.0pt'>Of course, the =
large majority
of ALL potential langtags with subtags will never be realized in =
meaning, but
this very obvious point should surely be dealt with as briefly as =
possible.<o:p></o:p></span></font></p>

<p class=3DMsoPlainText style=3D'margin-right:-11.9pt'><font size=3D2
face=3D"Courier New"><span style=3D'font-size:10.0pt'>Regards, =
David<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>-----Original Message-----<br>
From: Addison Phillips [mailto:addison@yahoo-inc.com] <br>
Sent: 01 August 2007 16:52<br>
To: David Dalby<br>
Cc: debbie@ictmarketing.co.uk; 'Marion Gunn'; 'LTRU Working Group'<br>
Subject: Re: [Ltru] Updated draft-4646bis...</span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>You have to read the document. The terms &quot;valid&quot; and
&quot;well-formed&quot; have <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>a different meaning in the context of RFC 4646/4646bis. The term
&quot;valid&quot; <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>was chosen carefully in this =
context.<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>Mark and others are correct that every tag has *a* meaning (we =
even <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>spell out the one for the &quot;meaningless&quot; tag in the =
example).
But that <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>does not mean that every tag is =
*meaningful*.<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>How about this version instead:<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&lt;t&gt;Validity of a tag is not everything. While every valid =
tag has
a <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>meaning, it might not represent any real language usage. This is =
<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>unavoidable in a system in which subtags can be combined freely. =
For <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>example, tags such as &quot;ar-Cyrl-CO&quot; (Arabic, Cyrillic =
script,
as used in <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><st1:country-region w:st=3D"on"><st1:place =
w:st=3D"on"><font
  size=3D2 face=3D"Courier New"><span =
style=3D'font-size:10.0pt'>Colombia</span></font></st1:place></st1:countr=
y-region>
) or &quot;tlh-Kore-AQ-fonipa&quot; (Klingon, Korean script, as used in =
<o:p></o:p></p>

<p class=3DMsoPlainText><st1:place w:st=3D"on"><font size=3D2 =
face=3D"Courier New"><span
 style=3D'font-size:10.0pt'>Antarctica</span></font></st1:place>, IPA =
phonetic
transcription) are both valid and unlikely to <o:p></o:p></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>represent a useful combination of language =
attributes.&lt;/t&gt;<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoPlainText><st1:place w:st=3D"on"><font size=3D2 =
face=3D"Courier New"><span
 =
style=3D'font-size:10.0pt'>Addison</span></font></st1:place><o:p></o:p></=
p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>David Dalby wrote:<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; I agree!<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; David<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&nbsp; =
_____________________________________________________<o:p></o:p></span></=
font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&nbsp; <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; Dr David Dalby <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; The Linguasphere Observatory<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; <st1:City w:st=3D"on"><st1:place =
w:st=3D"on">Hebron</st1:place></st1:City><o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; Whitland<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; <st1:country-region w:st=3D"on"><st1:place =
w:st=3D"on">Wales</st1:place></st1:country-region><o:p></o:p></span></fon=
t></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; SA34 0XT<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&nbsp; <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; -----Original Message-----<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; From: Debbie Garside [mailto:debbie@ictmarketing.co.uk] =
<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; Sent: 01 August 2007 13:44<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; To: addison@yahoo-inc.com; 'Marion =
Gunn'<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; Cc: 'LTRU Working Group'<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; Subject: RE: [Ltru] Updated =
draft-4646bis...<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; <st1:place w:st=3D"on">Addison</st1:place> =
wrote:<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; A tag can be valid yet =
meaningless.<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; I don't really like this as it seems, on the face of it, a
contradiction in<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; terms.&nbsp; I would propose one of the =
following:<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; ---<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; A tag can be well formed yet =
meaningless.<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; A tag can be well formed in terms of syntax, and thus =
valid, yet
meaningless<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; in terms of its attributes. For example, ... =
<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; ---<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; Best<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; Debbie<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; -----Original Message-----<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; From: Addison Phillips [mailto:addison@yahoo-inc.com] =
<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; Sent: 31 July 2007 16:52<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; To: Marion Gunn<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; Cc: LTRU Working Group<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; Subject: Re: [Ltru] Updated =
draft-4646bis...<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt;<o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; Marion Gunn wrote:<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt;&nbsp; &gt;<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt;&nbsp; &gt; However, here goes with one more =
attempt:<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt;&nbsp; &gt;<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt;&nbsp; &gt; &quot;For example, although a tag such as
'ar-Cyrl-CO' (Arabic, <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; as used in&nbsp; &gt; <st1:City w:st=3D"on"><st1:place =
w:st=3D"on">Columbia</st1:place></st1:City>,&nbsp;
&gt; written in Cyrillic script) is <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; valid, it is [most] unlikely to be of&nbsp; &gt; use,
because&nbsp; &gt; such <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; combination of attributes is unlikely to occur in =
actual <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; language&nbsp; &gt; =
use.&quot;<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt;&nbsp; &gt;<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt;<o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; I note that it is useful to look at the actual editor's =
copy <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; when suggesting minor editorial changes. Upon =
reflection, I <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; found the current sentence to be a bit of a run-on. =
I've <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; taken your suggestion of 'unlikely' and edited further =
such <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; that the paragraph now =
reads:<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt;<o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; &lt;t&gt;Validity of a tag is not everything. A tag can =
be
valid <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; yet meaningless. This is unavoidable with a generative =
system <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; like the language subtag mechanism. For example, a tag =
such <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; as &quot;ar-Cyrl-CO&quot; <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; (Arabic, Cyrillic script, as used in =
<st1:country-region
w:st=3D"on"><st1:place =
w:st=3D"on">Colombia</st1:place></st1:country-region>) is
perfectly valid. <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; However, it is unlikely to be a useful tag, as it =
represents <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; an unlikely combination of language attributes that is =
<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; probably unrelated to any real language =
usage.&lt;/t&gt;<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt;<o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; After five minutes from now, you will need to comment =
on <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; draft-08. I'm always happy to consider editorial =
changes that <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; improve the text.<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt;<o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; <st1:place =
w:st=3D"on">Addison</st1:place><o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt;<o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; --<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; Addison Phillips<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; Globalization Architect -- Yahoo! =
Inc.<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; Chair -- W3C Internationalization Core =
WG<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt;<o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; Internationalization is an =
architecture.<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; It is not a feature.<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt;<o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt;<o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; =
_______________________________________________<o:p></o:p></span></font><=
/p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; Ltru mailing list<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; Ltru@ietf.org<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt; =
https://www1.ietf.org/mailman/listinfo/ltru<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt;<o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt;&gt;<o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; =
_______________________________________________<o:p></o:p></span></font><=
/p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; Ltru mailing list<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; Ltru@ietf.org<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; =
https://www1.ietf.org/mailman/listinfo/ltru<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>&gt; <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>-- <o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>Addison Phillips<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>Globalization Architect -- Yahoo! =
Inc.<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>Chair -- W3C Internationalization Core =
WG<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>Internationalization is an =
architecture.<o:p></o:p></span></font></p>

<p class=3DMsoPlainText><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt'>It is not a feature.<o:p></o:p></span></font></p>

</div>

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_______________________________________________
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From ltru-bounces@ietf.org Wed Aug 01 16:32:25 2007
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From: "Debbie Garside" <debbie@ictmarketing.co.uk>
To: <addison@yahoo-inc.com>,
	"'David Dalby'" <daviddalby@linguasphere.info>
Subject: RE: [Ltru] Updated draft-4646bis...
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I still don't think it sounds right :-) but I take the point made about well
formed and valid.

How about:

The syntax of a language sub tag is such that it is possible to create a
valid subtag where the sum of its component attributes may not represent a
meaningful combination within actual language usage.  For example, etc.

Or

Validity of a language subtag does not necessarily make it meaningful. A
subtag can be valid in terms of syntax yet meaningless in terms of real
language usage. For example, etc.


Best

Debbie 

> -----Original Message-----
> From: Addison Phillips [mailto:addison@yahoo-inc.com] 
> Sent: 01 August 2007 16:52
> To: David Dalby
> Cc: debbie@ictmarketing.co.uk; 'Marion Gunn'; 'LTRU Working Group'
> Subject: Re: [Ltru] Updated draft-4646bis...
> 
> You have to read the document. The terms "valid" and 
> "well-formed" have a different meaning in the context of RFC 
> 4646/4646bis. The term "valid" 
> was chosen carefully in this context.
> 
> Mark and others are correct that every tag has *a* meaning 
> (we even spell out the one for the "meaningless" tag in the 
> example). But that does not mean that every tag is *meaningful*.
> 
> How about this version instead:
> 
> 
> <t>Validity of a tag is not everything. While every valid tag 
> has a meaning, it might not represent any real language 
> usage. This is unavoidable in a system in which subtags can 
> be combined freely. For example, tags such as "ar-Cyrl-CO" 
> (Arabic, Cyrillic script, as used in Colombia ) or 
> "tlh-Kore-AQ-fonipa" (Klingon, Korean script, as used in 
> Antarctica, IPA phonetic transcription) are both valid and 
> unlikely to represent a useful combination of language attributes.</t>
> 
> Addison
> 
> David Dalby wrote:
> > I agree!
> > 
> > David
> > 
> >  _____________________________________________________
> >  
> > Dr David Dalby
> > The Linguasphere Observatory
> > Hebron
> > Whitland
> > Wales
> > SA34 0XT
> >  
> > -----Original Message-----
> > From: Debbie Garside [mailto:debbie@ictmarketing.co.uk]
> > Sent: 01 August 2007 13:44
> > To: addison@yahoo-inc.com; 'Marion Gunn'
> > Cc: 'LTRU Working Group'
> > Subject: RE: [Ltru] Updated draft-4646bis...
> > 
> > Addison wrote:
> > 
> >> A tag can be valid yet meaningless.
> > 
> > I don't really like this as it seems, on the face of it, a 
> > contradiction in terms.  I would propose one of the following:
> > 
> > ---
> > A tag can be well formed yet meaningless.
> > 
> > A tag can be well formed in terms of syntax, and thus valid, yet 
> > meaningless in terms of its attributes. For example, ...
> > 
> > ---
> > 
> > Best
> > 
> > Debbie
> > 
> >> -----Original Message-----
> >> From: Addison Phillips [mailto:addison@yahoo-inc.com]
> >> Sent: 31 July 2007 16:52
> >> To: Marion Gunn
> >> Cc: LTRU Working Group
> >> Subject: Re: [Ltru] Updated draft-4646bis...
> >>
> >> Marion Gunn wrote:
> >>  >
> >>  > However, here goes with one more attempt:
> >>  >
> >>  > "For example, although a tag such as 'ar-Cyrl-CO' 
> (Arabic, as used 
> >> in  > Columbia,  > written in Cyrillic script) is valid, 
> it is [most] 
> >> unlikely to be of  > use, because  > such combination of 
> attributes 
> >> is unlikely to occur in actual language  > use."
> >>  >
> >>
> >> I note that it is useful to look at the actual editor's copy when 
> >> suggesting minor editorial changes. Upon reflection, I found the 
> >> current sentence to be a bit of a run-on. I've taken your 
> suggestion 
> >> of 'unlikely' and edited further such that the paragraph now reads:
> >>
> >> <t>Validity of a tag is not everything. A tag can be valid yet 
> >> meaningless. This is unavoidable with a generative system like the 
> >> language subtag mechanism. For example, a tag such as "ar-Cyrl-CO"
> >> (Arabic, Cyrillic script, as used in Colombia) is perfectly valid. 
> >> However, it is unlikely to be a useful tag, as it represents an 
> >> unlikely combination of language attributes that is probably 
> >> unrelated to any real language usage.</t>
> >>
> >> After five minutes from now, you will need to comment on draft-08. 
> >> I'm always happy to consider editorial changes that 
> improve the text.
> >>
> >> Addison
> >>
> >> --
> >> Addison Phillips
> >> Globalization Architect -- Yahoo! Inc.
> >> Chair -- W3C Internationalization Core WG
> >>
> >> Internationalization is an architecture.
> >> It is not a feature.
> >>
> >>
> >> _______________________________________________
> >> Ltru mailing list
> >> Ltru@ietf.org
> >> https://www1.ietf.org/mailman/listinfo/ltru
> >>
> >>
> > 
> > 
> > 
> > 
> > 
> > 
> > _______________________________________________
> > Ltru mailing list
> > Ltru@ietf.org
> > https://www1.ietf.org/mailman/listinfo/ltru
> > 
> > 
> 
> --
> Addison Phillips
> Globalization Architect -- Yahoo! Inc.
> Chair -- W3C Internationalization Core WG
> 
> Internationalization is an architecture.
> It is not a feature.
> 
> 
> 






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Date: Wed, 1 Aug 2007 14:02:47 -0700
From: "Mark Davis" <mark.davis@icu-project.org>
To: "David Dalby" <daviddalby@linguasphere.info>
Subject: Re: [Ltru] Updated draft-4646bis...
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The phrase "remain unrealized in meaning" is very odd, and certainly not
very clear. Normally if I "realize the meaning" of something, I understand
it. That is not at all what is being talked about.

>the sum of its component attributes may not represent a meaningful
combination within actual language usage

We are not "summing" attributes, and the combinations ARE meaningful.

People are confusing a "meaningful" with "currently applicable to existing
instances". These are just not the same, and confusing them makes for fuzzy
and inappropriate language.

   - "articulate US president" is perfectly meaningful, but has no
   existing instances
   - "colorless green ideas" is not meaningful, and has no existing
   instances
   - "controversial US president" is both meaningful, and has existing
   instances

Addisons phrasing is fine.

Mark

BTW, there are very few times where I have call to use my PhD these days, so
its nice to find an application for it ;-)

On 8/1/07, David Dalby <daviddalby@linguasphere.info> wrote:
>
>  Addison, You seem to have missed the second in my quick sequence of two
> e-mails. What is wrong with the simple statement (?):
>
> "A langtag may be formally valid but remain unrealized in meaning, e.g.
> ...."  This even allows for the unlikely event of its meaning becoming
> realized.
>
> Of course, the large majority of ALL potential langtags with subtags will
> never be realized in meaning, but this very obvious point should surely be
> dealt with as briefly as possible.
>
> Regards, David
>
>
>
> -----Original Message-----
> From: Addison Phillips [mailto:addison@yahoo-inc.com]
> Sent: 01 August 2007 16:52
> To: David Dalby
> Cc: debbie@ictmarketing.co.uk; 'Marion Gunn'; 'LTRU Working Group'
> Subject: Re: [Ltru] Updated draft-4646bis...
>
>
>
> You have to read the document. The terms "valid" and "well-formed" have
>
> a different meaning in the context of RFC 4646/4646bis. The term "valid"
>
> was chosen carefully in this context.
>
>
>
> Mark and others are correct that every tag has *a* meaning (we even
>
> spell out the one for the "meaningless" tag in the example). But that
>
> does not mean that every tag is *meaningful*.
>
>
>
> How about this version instead:
>
>
>
>
>
> <t>Validity of a tag is not everything. While every valid tag has a
>
> meaning, it might not represent any real language usage. This is
>
> unavoidable in a system in which subtags can be combined freely. For
>
> example, tags such as "ar-Cyrl-CO" (Arabic, Cyrillic script, as used in
>
> Colombia ) or "tlh-Kore-AQ-fonipa" (Klingon, Korean script, as used in
>
> Antarctica, IPA phonetic transcription) are both valid and unlikely to
>
> represent a useful combination of language attributes.</t>
>
>
>
> Addison
>
>
>
> David Dalby wrote:
>
> > I agree!
>
> >
>
> > David
>
> >
>
> >  _____________________________________________________
>
> >
>
> > Dr David Dalby
>
> > The Linguasphere Observatory
>
> > Hebron
>
> > Whitland
>
> > Wales
>
> > SA34 0XT
>
> >
>
> > -----Original Message-----
>
> > From: Debbie Garside [mailto:debbie@ictmarketing.co.uk]
>
> > Sent: 01 August 2007 13:44
>
> > To: addison@yahoo-inc.com; 'Marion Gunn'
>
> > Cc: 'LTRU Working Group'
>
> > Subject: RE: [Ltru] Updated draft-4646bis...
>
> >
>
> > Addison wrote:
>
> >
>
> >> A tag can be valid yet meaningless.
>
> >
>
> > I don't really like this as it seems, on the face of it, a contradiction
> in
>
> > terms.  I would propose one of the following:
>
> >
>
> > ---
>
> > A tag can be well formed yet meaningless.
>
> >
>
> > A tag can be well formed in terms of syntax, and thus valid, yet
> meaningless
>
> > in terms of its attributes. For example, ...
>
> >
>
> > ---
>
> >
>
> > Best
>
> >
>
> > Debbie
>
> >
>
> >> -----Original Message-----
>
> >> From: Addison Phillips [mailto:addison@yahoo-inc.com]
>
> >> Sent: 31 July 2007 16:52
>
> >> To: Marion Gunn
>
> >> Cc: LTRU Working Group
>
> >> Subject: Re: [Ltru] Updated draft-4646bis...
>
> >>
>
> >> Marion Gunn wrote:
>
> >>  >
>
> >>  > However, here goes with one more attempt:
>
> >>  >
>
> >>  > "For example, although a tag such as 'ar-Cyrl-CO' (Arabic,
>
> >> as used in  > Columbia,  > written in Cyrillic script) is
>
> >> valid, it is [most] unlikely to be of  > use, because  > such
>
> >> combination of attributes is unlikely to occur in actual
>
> >> language  > use."
>
> >>  >
>
> >>
>
> >> I note that it is useful to look at the actual editor's copy
>
> >> when suggesting minor editorial changes. Upon reflection, I
>
> >> found the current sentence to be a bit of a run-on. I've
>
> >> taken your suggestion of 'unlikely' and edited further such
>
> >> that the paragraph now reads:
>
> >>
>
> >> <t>Validity of a tag is not everything. A tag can be valid
>
> >> yet meaningless. This is unavoidable with a generative system
>
> >> like the language subtag mechanism. For example, a tag such
>
> >> as "ar-Cyrl-CO"
>
> >> (Arabic, Cyrillic script, as used in Colombia) is perfectly valid.
>
> >> However, it is unlikely to be a useful tag, as it represents
>
> >> an unlikely combination of language attributes that is
>
> >> probably unrelated to any real language usage.</t>
>
> >>
>
> >> After five minutes from now, you will need to comment on
>
> >> draft-08. I'm always happy to consider editorial changes that
>
> >> improve the text.
>
> >>
>
> >> Addison
>
> >>
>
> >> --
>
> >> Addison Phillips
>
> >> Globalization Architect -- Yahoo! Inc.
>
> >> Chair -- W3C Internationalization Core WG
>
> >>
>
> >> Internationalization is an architecture.
>
> >> It is not a feature.
>
> >>
>
> >>
>
> >> _______________________________________________
>
> >> Ltru mailing list
>
> >> Ltru@ietf.org
>
> >> https://www1.ietf.org/mailman/listinfo/ltru
>
> >>
>
> >>
>
> >
>
> >
>
> >
>
> >
>
> >
>
> >
>
> > _______________________________________________
>
> > Ltru mailing list
>
> > Ltru@ietf.org
>
> > https://www1.ietf.org/mailman/listinfo/ltru
>
> >
>
> >
>
>
>
> --
>
> Addison Phillips
>
> Globalization Architect -- Yahoo! Inc.
>
> Chair -- W3C Internationalization Core WG
>
>
>
> Internationalization is an architecture.
>
> It is not a feature.
>
> _______________________________________________
> Ltru mailing list
> Ltru@ietf.org
> https://www1.ietf.org/mailman/listinfo/ltru
>
>


-- 
Mark

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<span>The phrase &quot;remain unrealized in meaning&quot; is very odd, and certainly not very clear. Normally if I &quot;realize the meaning&quot; of something, I understand it. That is not at all what is being talked about.
<br><br>&gt;</span>the sum of its component attributes may not represent a meaningful combination within actual language usage<br><br>We are not &quot;summing&quot; attributes, and the combinations ARE meaningful.<br><span>
<br>People are confusing a &quot;meaningful&quot; with &quot;currently applicable to existing instances&quot;. These are just not the same, and confusing them makes for fuzzy and inappropriate language.<br></span><ul><li>
<span>&quot;articulate US president&quot; is perfectly meaningful, but has no existing instances</span></li><li><span>&quot;colorless green ideas&quot; is not meaningful, and has no existing instances</span></li><li><span>
&quot;controversial US president&quot; is both meaningful, and has existing instances</span></li></ul><span></span><span>Addisons phrasing is fine.</span><br><span><br>Mark<br><br>BTW, there are very few times where I have call to use my PhD these days, so its nice to find an application for it ;-)
<br></span><br><div><span class="gmail_quote">On 8/1/07, <b class="gmail_sendername">David Dalby</b> &lt;<a href="mailto:daviddalby@linguasphere.info">daviddalby@linguasphere.info</a>&gt; wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">













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<p><font face="Courier New" size="2"><span style="font-size: 10pt;">Addison</span></font>, You seem to have
missed the second in my quick sequence of two e-mails. What is wrong with the
simple statement (?):</p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&quot;A langtag may be
formally valid but remain unrealized in meaning, e.g. ....&quot;&nbsp; This
even allows for the unlikely event of its meaning becoming realized.</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">Of course, the large majority
of ALL potential langtags with subtags will never be realized in meaning, but
this very obvious point should surely be dealt with as briefly as possible.</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">Regards, David</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&nbsp;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;"><span class="q">-----Original Message-----<br>
From: Addison Phillips [mailto:<a href="mailto:addison@yahoo-inc.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">addison@yahoo-inc.com</a>] <br></span><div><span class="e" id="q_114231810a0a4ce4_2">

Sent: 01 August 2007 16:52<br>
To: David Dalby<br>
Cc: <a href="mailto:debbie@ictmarketing.co.uk" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">debbie@ictmarketing.co.uk</a>; &#39;Marion Gunn&#39;; &#39;LTRU Working Group&#39;<br>
Subject: Re: [Ltru] Updated draft-4646bis...</span></div></span></font></p><div><span class="e" id="q_114231810a0a4ce4_4">

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&nbsp;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">You have to read the document. The terms &quot;valid&quot; and
&quot;well-formed&quot; have </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">a different meaning in the context of RFC 4646/4646bis. The term
&quot;valid&quot; </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">was chosen carefully in this context.</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&nbsp;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">Mark and others are correct that every tag has *a* meaning (we even </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">spell out the one for the &quot;meaningless&quot; tag in the example).
But that </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">does not mean that every tag is *meaningful*.</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&nbsp;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">How about this version instead:</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&nbsp;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&nbsp;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&lt;t&gt;Validity of a tag is not everything. While every valid tag has
a </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">meaning, it might not represent any real language usage. This is </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">unavoidable in a system in which subtags can be combined freely. For </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">example, tags such as &quot;ar-Cyrl-CO&quot; (Arabic, Cyrillic script,
as used in </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">Colombia</span></font>
) or &quot;tlh-Kore-AQ-fonipa&quot; (Klingon, Korean script, as used in </p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">Antarctica</span></font>, IPA phonetic
transcription) are both valid and unlikely to </p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">represent a useful combination of language attributes.&lt;/t&gt;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&nbsp;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">Addison</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&nbsp;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">David Dalby wrote:</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; I agree!</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; David</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&nbsp; _____________________________________________________</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&nbsp; </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; Dr David Dalby </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; The Linguasphere Observatory</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; Hebron</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; Whitland</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; Wales</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; SA34 0XT</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&nbsp; </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; -----Original Message-----</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; From: Debbie Garside [mailto:<a href="mailto:debbie@ictmarketing.co.uk" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">debbie@ictmarketing.co.uk
</a>] </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; Sent: 01 August 2007 13:44</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; To: <a href="mailto:addison@yahoo-inc.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">addison@yahoo-inc.com</a>; &#39;Marion Gunn&#39;
</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; Cc: &#39;LTRU Working Group&#39;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; Subject: RE: [Ltru] Updated draft-4646bis...</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; Addison wrote:</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; A tag can be valid yet meaningless.</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; I don&#39;t really like this as it seems, on the face of it, a
contradiction in</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; terms.&nbsp; I would propose one of the following:</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; ---</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; A tag can be well formed yet meaningless.</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; A tag can be well formed in terms of syntax, and thus valid, yet
meaningless</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; in terms of its attributes. For example, ... </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; ---</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; Best</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; Debbie</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; -----Original Message-----</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; From: Addison Phillips [mailto:<a href="mailto:addison@yahoo-inc.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">addison@yahoo-inc.com
</a>] </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; Sent: 31 July 2007 16:52</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; To: Marion Gunn</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; Cc: LTRU Working Group</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; Subject: Re: [Ltru] Updated draft-4646bis...</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt;&nbsp;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; Marion Gunn wrote:</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt;&nbsp; &gt;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt;&nbsp; &gt; However, here goes with one more attempt:</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt;&nbsp; &gt;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt;&nbsp; &gt; &quot;For example, although a tag such as
&#39;ar-Cyrl-CO&#39; (Arabic, </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; as used in&nbsp; &gt; Columbia,&nbsp;
&gt; written in Cyrillic script) is </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; valid, it is [most] unlikely to be of&nbsp; &gt; use,
because&nbsp; &gt; such </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; combination of attributes is unlikely to occur in actual </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; language&nbsp; &gt; use.&quot;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt;&nbsp; &gt;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt;&nbsp;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; I note that it is useful to look at the actual editor&#39;s copy </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; when suggesting minor editorial changes. Upon reflection, I </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; found the current sentence to be a bit of a run-on. I&#39;ve </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; taken your suggestion of &#39;unlikely&#39; and edited further such </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; that the paragraph now reads:</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt;&nbsp;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; &lt;t&gt;Validity of a tag is not everything. A tag can be
valid </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; yet meaningless. This is unavoidable with a generative system </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; like the language subtag mechanism. For example, a tag such </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; as &quot;ar-Cyrl-CO&quot; </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; (Arabic, Cyrillic script, as used in Colombia) is
perfectly valid. </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; However, it is unlikely to be a useful tag, as it represents </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; an unlikely combination of language attributes that is </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; probably unrelated to any real language usage.&lt;/t&gt;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt;&nbsp;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; After five minutes from now, you will need to comment on </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; draft-08. I&#39;m always happy to consider editorial changes that </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; improve the text.</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt;&nbsp;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; Addison</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt;&nbsp;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; --</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; Addison Phillips</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; Globalization Architect -- Yahoo! Inc.</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; Chair -- W3C Internationalization Core WG</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt;&nbsp;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; Internationalization is an architecture.</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; It is not a feature.</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt;&nbsp;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt;&nbsp;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; _______________________________________________</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; Ltru mailing list</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; <a href="mailto:Ltru@ietf.org" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">Ltru@ietf.org</a></span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt; <a href="https://www1.ietf.org/mailman/listinfo/ltru" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">https://www1.ietf.org/mailman/listinfo/ltru
</a></span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt;&nbsp;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt;&gt;&nbsp;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; _______________________________________________</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; Ltru mailing list</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; <a href="mailto:Ltru@ietf.org" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">Ltru@ietf.org</a></span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; <a href="https://www1.ietf.org/mailman/listinfo/ltru" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">https://www1.ietf.org/mailman/listinfo/ltru
</a></span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&gt; </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&nbsp;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">-- </span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">Addison Phillips</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">Globalization Architect -- Yahoo! Inc.</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">Chair -- W3C Internationalization Core WG</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">&nbsp;</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">Internationalization is an architecture.</span></font></p>

<p><font face="Courier New" size="2"><span style="font-size: 10pt;">It is not a feature.</span></font></p>

</span></div></div>

</div>


<br>_______________________________________________<br>Ltru mailing list<br><a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:Ltru@ietf.org">Ltru@ietf.org</a><br><a onclick="return top.js.OpenExtLink(window,event,this)" href="https://www1.ietf.org/mailman/listinfo/ltru" target="_blank">
https://www1.ietf.org/mailman/listinfo/ltru</a><br><br></blockquote></div><br><br clear="all"><br>-- <br>Mark

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From: Addison Phillips <addison@yahoo-inc.com>
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> 
> The syntax of a language sub tag is such that it is possible to create a
> valid subtag where the sum of its component attributes may not represent a
> meaningful combination within actual language usage.  For example, etc.

I think my proposal says that (even allowing for s/subtag/tag/) far more 
nicely than this quite complex sentence. I also like Stephane's original 
proposal (around which mine is based and which was approved by this WG 
previously) in many ways.

> 
> Or
> 
> Validity of a language subtag does not necessarily make it meaningful. A
> subtag can be valid in terms of syntax yet meaningless in terms of real
> language usage. For example, etc.

No. This runs up against what Mark said before. The tag always has a 
meaning. It just might not be a meaningful meaning :-). But saying so in 
a waggish way in an email is not the same as saying so in the document.

I also fail to see how your proposal is any different from the 
equivalent portion of the proposed paragraph:

 >> Validity of a tag is not everything. While every valid tag
 >> has a meaning, it might not represent any real language
 >> usage.

It is very helpful if you look at the text in the context of the 
document and provide full paragraphs of proposal. The difference between 
your proposals and mine (when excluding the examples) are editorial in 
nature.

Addison


-- 
Addison Phillips
Co-Editor -- RFC 4646bis

> 
> 
> Best
> 
> Debbie 
> 
>> -----Original Message-----
>> From: Addison Phillips [mailto:addison@yahoo-inc.com] 
>> Sent: 01 August 2007 16:52
>> To: David Dalby
>> Cc: debbie@ictmarketing.co.uk; 'Marion Gunn'; 'LTRU Working Group'
>> Subject: Re: [Ltru] Updated draft-4646bis...
>>
>> You have to read the document. The terms "valid" and 
>> "well-formed" have a different meaning in the context of RFC 
>> 4646/4646bis. The term "valid" 
>> was chosen carefully in this context.
>>
>> Mark and others are correct that every tag has *a* meaning 
>> (we even spell out the one for the "meaningless" tag in the 
>> example). But that does not mean that every tag is *meaningful*.
>>
>> How about this version instead:
>>
>>
>> <t>Validity of a tag is not everything. While every valid tag 
>> has a meaning, it might not represent any real language 
>> usage. This is unavoidable in a system in which subtags can 
>> be combined freely. For example, tags such as "ar-Cyrl-CO" 
>> (Arabic, Cyrillic script, as used in Colombia ) or 
>> "tlh-Kore-AQ-fonipa" (Klingon, Korean script, as used in 
>> Antarctica, IPA phonetic transcription) are both valid and 
>> unlikely to represent a useful combination of language attributes.</t>
>>
>> Addison
>>
>> David Dalby wrote:
>>> I agree!
>>>
>>> David
>>>
>>>  _____________________________________________________
>>>  
>>> Dr David Dalby
>>> The Linguasphere Observatory
>>> Hebron
>>> Whitland
>>> Wales
>>> SA34 0XT
>>>  
>>> -----Original Message-----
>>> From: Debbie Garside [mailto:debbie@ictmarketing.co.uk]
>>> Sent: 01 August 2007 13:44
>>> To: addison@yahoo-inc.com; 'Marion Gunn'
>>> Cc: 'LTRU Working Group'
>>> Subject: RE: [Ltru] Updated draft-4646bis...
>>>
>>> Addison wrote:
>>>
>>>> A tag can be valid yet meaningless.
>>> I don't really like this as it seems, on the face of it, a 
>>> contradiction in terms.  I would propose one of the following:
>>>
>>> ---
>>> A tag can be well formed yet meaningless.
>>>
>>> A tag can be well formed in terms of syntax, and thus valid, yet 
>>> meaningless in terms of its attributes. For example, ...
>>>
>>> ---
>>>
>>> Best
>>>
>>> Debbie
>>>
>>>> -----Original Message-----
>>>> From: Addison Phillips [mailto:addison@yahoo-inc.com]
>>>> Sent: 31 July 2007 16:52
>>>> To: Marion Gunn
>>>> Cc: LTRU Working Group
>>>> Subject: Re: [Ltru] Updated draft-4646bis...
>>>>
>>>> Marion Gunn wrote:
>>>>  >
>>>>  > However, here goes with one more attempt:
>>>>  >
>>>>  > "For example, although a tag such as 'ar-Cyrl-CO' 
>> (Arabic, as used 
>>>> in  > Columbia,  > written in Cyrillic script) is valid, 
>> it is [most] 
>>>> unlikely to be of  > use, because  > such combination of 
>> attributes 
>>>> is unlikely to occur in actual language  > use."
>>>>  >
>>>>
>>>> I note that it is useful to look at the actual editor's copy when 
>>>> suggesting minor editorial changes. Upon reflection, I found the 
>>>> current sentence to be a bit of a run-on. I've taken your 
>> suggestion 
>>>> of 'unlikely' and edited further such that the paragraph now reads:
>>>>
>>>> <t>Validity of a tag is not everything. A tag can be valid yet 
>>>> meaningless. This is unavoidable with a generative system like the 
>>>> language subtag mechanism. For example, a tag such as "ar-Cyrl-CO"
>>>> (Arabic, Cyrillic script, as used in Colombia) is perfectly valid. 
>>>> However, it is unlikely to be a useful tag, as it represents an 
>>>> unlikely combination of language attributes that is probably 
>>>> unrelated to any real language usage.</t>
>>>>
>>>> After five minutes from now, you will need to comment on draft-08. 
>>>> I'm always happy to consider editorial changes that 
>> improve the text.
>>>> Addison
>>>>
>>>> --
>>>> Addison Phillips
>>>> Globalization Architect -- Yahoo! Inc.
>>>> Chair -- W3C Internationalization Core WG
>>>>
>>>> Internationalization is an architecture.
>>>> It is not a feature.
>>>>
>>>>
>>>> _______________________________________________
>>>> Ltru mailing list
>>>> Ltru@ietf.org
>>>> https://www1.ietf.org/mailman/listinfo/ltru
>>>>
>>>>
>>>
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> Ltru mailing list
>>> Ltru@ietf.org
>>> https://www1.ietf.org/mailman/listinfo/ltru
>>>
>>>
>> --
>> Addison Phillips
>> Globalization Architect -- Yahoo! Inc.
>> Chair -- W3C Internationalization Core WG
>>
>> Internationalization is an architecture.
>> It is not a feature.
>>
>>
>>
> 
> 
> 
> 


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From ltru-bounces@ietf.org Wed Aug 01 17:19:24 2007
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David,

There is nothing wrong in terms of the *meaning* of your sentence :-). 
However, as a contributor, I suggested an alternative phrasing that also 
took into account other's suggestions on list, including a paragraph 
structure previously approved by this WG. I have not seen a groundswell 
of support for any particular version of the paragraph, so the issue is 
also not closed yet.


David Dalby wrote:
> Addison, You seem to have missed the second in my quick sequence of two
> e-mails. 

No, I just don't feel obliged to respond to every email in the thread.

> What is wrong with the simple statement (?):

The proposed text is imprecisely worded. When suggesting replacement 
text, if you do not fully and completely spell it out, the editor is 
likely to need to edit it for consistency, which can defeat the proposed 
purpose. I attempted to take each person's suggestions and combine them 
into a single proposed text (or exclude bits of text or suggestions for 
various reasons expressed on the thread). Note: my proposals are always 
made as a contributor to the list and not as one of the editors.

> 
> "A langtag may be formally valid but remain unrealized in meaning, e.g.
> ...."  This even allows for the unlikely event of its meaning becoming
> realized.

This text has several editorial problems with it.

- We say "language tag", never "langtag"

- The word "may" is one of the normative words from RFC 2119. We never 
use it except with its normative meaning.

- As noted previously, we have defined "valid" to have a specific 
meaning. "Formally" is superfluous and could be confusing as a result.

- We always spell out the Latin abbreviations "e.g." and "i.e." using 
their English equivalents ("for example" and "in other words").

Finally, you didn't include the example text itself, which includes some 
non-simple statements. I note that minor edits suggested out of context 
often make no sense when they are inserted in context. I fine it best to 
be careful to quote the entire proposed paragraph each time and in full 
to help avoid this.

As a result, your suggestion is actually:

<t>
A language tag might be valid but remain unrealized in meaning. For 
example, a tag such as "ar-Cyrl-CO" (Arabic, Cyrillic script, as used in 
  Colombia) is both valid and unlikely to represent a useful combination 
of language attributes.
</t>

So, finally, the substantive part: I think that the phrase "remain 
unrealized in meaning" is somewhat obscure. A newbie, especially one who 
cannot avail herself of this list's mail archive, will have no idea what 
we're talking about. Thus I prefer my (actually an adaptation of 
Peter's) "might not represent any real language usage". Note that this 
formulation does allow for it to either have or acquire real language 
usage in the future.

> 
> Of course, the large majority of ALL potential langtags with subtags will
> never be realized in meaning, but this very obvious point should surely be
> dealt with as briefly as possible.

It was dealt with not-at-all in RFC's 1766, 3066, or 4646. The WG felt 
that some mention was warranted now. We're debating what form that 
mention should take.

Addison

-- 
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.


_______________________________________________
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From: "Debbie Garside" <debbie@ictmarketing.co.uk>
To: <addison@yahoo-inc.com>
Subject: RE: [Ltru] Updated draft-4646bis...
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Hi Addison

It is this phrase " Validity of a tag is not everything."  that I
particularly dislike. But if the WG wish to adopt it who am I to disagree
;-)

Mine was longwinded though.

As to editorial in nature, is that not, partly, what this is about?  I have
been away from the WG for a while so am playing catch-up.  If you just
require technical comment I will be quiet on this.

Best

Debbie

> -----Original Message-----
> From: Addison Phillips [mailto:addison@yahoo-inc.com] 
> Sent: 01 August 2007 22:10
> To: debbie@ictmarketing.co.uk
> Cc: 'David Dalby'; 'Marion Gunn'; 'LTRU Working Group'
> Subject: Re: [Ltru] Updated draft-4646bis...
> 
> > 
> > The syntax of a language sub tag is such that it is 
> possible to create 
> > a valid subtag where the sum of its component attributes may not 
> > represent a meaningful combination within actual language 
> usage.  For example, etc.
> 
> I think my proposal says that (even allowing for 
> s/subtag/tag/) far more nicely than this quite complex 
> sentence. I also like Stephane's original proposal (around 
> which mine is based and which was approved by this WG
> previously) in many ways.
> 
> > 
> > Or
> > 
> > Validity of a language subtag does not necessarily make it 
> meaningful. A
> > subtag can be valid in terms of syntax yet meaningless in 
> terms of real
> > language usage. For example, etc.
> 
> No. This runs up against what Mark said before. The tag always has a 
> meaning. It just might not be a meaningful meaning :-). But 
> saying so in 
> a waggish way in an email is not the same as saying so in the 
> document.
> 
> I also fail to see how your proposal is any different from the 
> equivalent portion of the proposed paragraph:
> 
>  >> Validity of a tag is not everything. While every valid tag
>  >> has a meaning, it might not represent any real language
>  >> usage.
> 
> It is very helpful if you look at the text in the context of the 
> document and provide full paragraphs of proposal. The 
> difference between 
> your proposals and mine (when excluding the examples) are 
> editorial in 
> nature.
> 
> Addison
> 
> 
> -- 
> Addison Phillips
> Co-Editor -- RFC 4646bis
> 
> > 
> > 
> > Best
> > 
> > Debbie 
> > 
> >> -----Original Message-----
> >> From: Addison Phillips [mailto:addison@yahoo-inc.com] 
> >> Sent: 01 August 2007 16:52
> >> To: David Dalby
> >> Cc: debbie@ictmarketing.co.uk; 'Marion Gunn'; 'LTRU Working Group'
> >> Subject: Re: [Ltru] Updated draft-4646bis...
> >>
> >> You have to read the document. The terms "valid" and 
> >> "well-formed" have a different meaning in the context of RFC 
> >> 4646/4646bis. The term "valid" 
> >> was chosen carefully in this context.
> >>
> >> Mark and others are correct that every tag has *a* meaning 
> >> (we even spell out the one for the "meaningless" tag in the 
> >> example). But that does not mean that every tag is *meaningful*.
> >>
> >> How about this version instead:
> >>
> >>
> >> <t>Validity of a tag is not everything. While every valid tag 
> >> has a meaning, it might not represent any real language 
> >> usage. This is unavoidable in a system in which subtags can 
> >> be combined freely. For example, tags such as "ar-Cyrl-CO" 
> >> (Arabic, Cyrillic script, as used in Colombia ) or 
> >> "tlh-Kore-AQ-fonipa" (Klingon, Korean script, as used in 
> >> Antarctica, IPA phonetic transcription) are both valid and 
> >> unlikely to represent a useful combination of language 
> attributes.</t>
> >>
> >> Addison
> >>
> >> David Dalby wrote:
> >>> I agree!
> >>>
> >>> David
> >>>
> >>>  _____________________________________________________
> >>>  
> >>> Dr David Dalby
> >>> The Linguasphere Observatory
> >>> Hebron
> >>> Whitland
> >>> Wales
> >>> SA34 0XT
> >>>  
> >>> -----Original Message-----
> >>> From: Debbie Garside [mailto:debbie@ictmarketing.co.uk]
> >>> Sent: 01 August 2007 13:44
> >>> To: addison@yahoo-inc.com; 'Marion Gunn'
> >>> Cc: 'LTRU Working Group'
> >>> Subject: RE: [Ltru] Updated draft-4646bis...
> >>>
> >>> Addison wrote:
> >>>
> >>>> A tag can be valid yet meaningless.
> >>> I don't really like this as it seems, on the face of it, a 
> >>> contradiction in terms.  I would propose one of the following:
> >>>
> >>> ---
> >>> A tag can be well formed yet meaningless.
> >>>
> >>> A tag can be well formed in terms of syntax, and thus valid, yet 
> >>> meaningless in terms of its attributes. For example, ...
> >>>
> >>> ---
> >>>
> >>> Best
> >>>
> >>> Debbie
> >>>
> >>>> -----Original Message-----
> >>>> From: Addison Phillips [mailto:addison@yahoo-inc.com]
> >>>> Sent: 31 July 2007 16:52
> >>>> To: Marion Gunn
> >>>> Cc: LTRU Working Group
> >>>> Subject: Re: [Ltru] Updated draft-4646bis...
> >>>>
> >>>> Marion Gunn wrote:
> >>>>  >
> >>>>  > However, here goes with one more attempt:
> >>>>  >
> >>>>  > "For example, although a tag such as 'ar-Cyrl-CO' 
> >> (Arabic, as used 
> >>>> in  > Columbia,  > written in Cyrillic script) is valid, 
> >> it is [most] 
> >>>> unlikely to be of  > use, because  > such combination of 
> >> attributes 
> >>>> is unlikely to occur in actual language  > use."
> >>>>  >
> >>>>
> >>>> I note that it is useful to look at the actual editor's 
> copy when 
> >>>> suggesting minor editorial changes. Upon reflection, I found the 
> >>>> current sentence to be a bit of a run-on. I've taken your 
> >> suggestion 
> >>>> of 'unlikely' and edited further such that the paragraph 
> now reads:
> >>>>
> >>>> <t>Validity of a tag is not everything. A tag can be valid yet 
> >>>> meaningless. This is unavoidable with a generative 
> system like the 
> >>>> language subtag mechanism. For example, a tag such as 
> "ar-Cyrl-CO"
> >>>> (Arabic, Cyrillic script, as used in Colombia) is 
> perfectly valid. 
> >>>> However, it is unlikely to be a useful tag, as it represents an 
> >>>> unlikely combination of language attributes that is probably 
> >>>> unrelated to any real language usage.</t>
> >>>>
> >>>> After five minutes from now, you will need to comment on 
> draft-08. 
> >>>> I'm always happy to consider editorial changes that 
> >> improve the text.
> >>>> Addison
> >>>>
> >>>> --
> >>>> Addison Phillips
> >>>> Globalization Architect -- Yahoo! Inc.
> >>>> Chair -- W3C Internationalization Core WG
> >>>>
> >>>> Internationalization is an architecture.
> >>>> It is not a feature.
> >>>>
> >>>>
> >>>> _______________________________________________
> >>>> Ltru mailing list
> >>>> Ltru@ietf.org
> >>>> https://www1.ietf.org/mailman/listinfo/ltru
> >>>>
> >>>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>> _______________________________________________
> >>> Ltru mailing list
> >>> Ltru@ietf.org
> >>> https://www1.ietf.org/mailman/listinfo/ltru
> >>>
> >>>
> >> --
> >> Addison Phillips
> >> Globalization Architect -- Yahoo! Inc.
> >> Chair -- W3C Internationalization Core WG
> >>
> >> Internationalization is an architecture.
> >> It is not a feature.
> >>
> >>
> >>
> > 
> > 
> > 
> > 
> 
> 






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From ltru-bounces@ietf.org Thu Aug 02 02:33:34 2007
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From: "David Dalby" <daviddalby@linguasphere.info>
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Subject: RE: [Ltru] Updated draft-4646bis...
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Thank you very much for your helpful e-mail. I shall try to observe the
conventions you have set out, and to respond if anything further suggests
itself. I also am just trying to catch up, after an absence on language
research (including some of the practical implications and applications of
tagging). 

David (Dalby)
The Linguasphere Observatory
Hebron SA34 0XT
Wales

-----Original Message-----
From: Addison Phillips [mailto:addison@yahoo-inc.com] 
Sent: 01 August 2007 22:19
To: David Dalby
Cc: debbie@ictmarketing.co.uk; 'Marion Gunn'; 'LTRU Working Group'
Subject: Re: [Ltru] Updated draft-4646bis...

David,

There is nothing wrong in terms of the *meaning* of your sentence :-). 
However, as a contributor, I suggested an alternative phrasing that also 
took into account other's suggestions on list, including a paragraph 
structure previously approved by this WG. I have not seen a groundswell 
of support for any particular version of the paragraph, so the issue is 
also not closed yet.


David Dalby wrote:
> Addison, You seem to have missed the second in my quick sequence of two
> e-mails. 

No, I just don't feel obliged to respond to every email in the thread.

> What is wrong with the simple statement (?):

The proposed text is imprecisely worded. When suggesting replacement 
text, if you do not fully and completely spell it out, the editor is 
likely to need to edit it for consistency, which can defeat the proposed 
purpose. I attempted to take each person's suggestions and combine them 
into a single proposed text (or exclude bits of text or suggestions for 
various reasons expressed on the thread). Note: my proposals are always 
made as a contributor to the list and not as one of the editors.

> 
> "A langtag may be formally valid but remain unrealized in meaning, e.g.
> ...."  This even allows for the unlikely event of its meaning becoming
> realized.

This text has several editorial problems with it.

- We say "language tag", never "langtag"

- The word "may" is one of the normative words from RFC 2119. We never 
use it except with its normative meaning.

- As noted previously, we have defined "valid" to have a specific 
meaning. "Formally" is superfluous and could be confusing as a result.

- We always spell out the Latin abbreviations "e.g." and "i.e." using 
their English equivalents ("for example" and "in other words").

Finally, you didn't include the example text itself, which includes some 
non-simple statements. I note that minor edits suggested out of context 
often make no sense when they are inserted in context. I fine it best to 
be careful to quote the entire proposed paragraph each time and in full 
to help avoid this.

As a result, your suggestion is actually:

<t>
A language tag might be valid but remain unrealized in meaning. For 
example, a tag such as "ar-Cyrl-CO" (Arabic, Cyrillic script, as used in 
  Colombia) is both valid and unlikely to represent a useful combination 
of language attributes.
</t>

So, finally, the substantive part: I think that the phrase "remain 
unrealized in meaning" is somewhat obscure. A newbie, especially one who 
cannot avail herself of this list's mail archive, will have no idea what 
we're talking about. Thus I prefer my (actually an adaptation of 
Peter's) "might not represent any real language usage". Note that this 
formulation does allow for it to either have or acquire real language 
usage in the future.

> 
> Of course, the large majority of ALL potential langtags with subtags will
> never be realized in meaning, but this very obvious point should surely be
> dealt with as briefly as possible.

It was dealt with not-at-all in RFC's 1766, 3066, or 4646. The WG felt 
that some mention was warranted now. We're debating what form that 
mention should take.

Addison

-- 
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.




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Subject: [Ltru] UTF-8 in which field? (Was: draft-ietf-ltru-4646bis-07
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On Tue, Jul 31, 2007 at 08:55:50AM -0700,
 Addison Phillips <addison@yahoo-inc.com> wrote 
 a message of 3166 lines which said:

>    Although the file format uses the UTF-8 encoding, unless
>    otherwise indicated, fields are restricted to the printable
>    characters from the US-ASCII [ISO646] repertoire.
...
> The 'Description' field MAY thus include non-ASCII characters.

I would prefer a positive wording:

The 'Description' field MAY thus include UTF-8 characters.

Yes, I know that ASCII characters are UTF-8, too but it seems clearer
that we mention the encoding we allow, rather than the more limited
one.

[I used the Find function of my editor to find out which fields were
authorized to have UTF-8 and I first discovered none.]


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On Wed, Aug 01, 2007 at 08:51:55AM -0700,
 Addison Phillips <addison@yahoo-inc.com> wrote=20
 a message of 141 lines which said:

> How about this version instead:

Better than the one in 4646bis-07 (which uses the word "meaningless",
while I recently noticed that "meaning" is used several times in the
draft, in a different sense).

What about adding also in 2.2.9. "Classes of Conformance":

<t>A tag is considered "real" if it is valid and if there are existing
resources available which match that tag. Unlike "well-formedness" and
"validity", "reality" is a fuzzy concept, and a moving one (new
resources can appear, making a tag real, without any change in the
registry). See <xref target=3D"meaning"/>.</t>

[Thanks to Philip Jos=E9 Farmer whose novel "The lovers" gave me the
idea to define "reality" :-) ]



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To: Stephane Bortzmeyer <bortzmeyer@nic.fr>
Subject: Re: [Ltru] UTF-8 in which field? (Was: draft-ietf-ltru-4646bis-07
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Stephane Bortzmeyer scripsit:

> > The 'Description' field MAY thus include non-ASCII characters.
> 
> I would prefer a positive wording:
> 
> The 'Description' field MAY thus include UTF-8 characters.

The point is that "ASCII" is both an encoding and a repertoire,
whereas "UTF-8" is only an encoding.  The meaning is that the
Description field may contain characters that are not in the
ASCII repertoire (whereas most other fields must not).  The
whole file is in the UTF-8 encoding.

-- 
John Cowan    cowan@ccil.org    http://ccil.org/~cowan
The whole of Gaul is quartered into three halves.
        -- Julius Caesar


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Stephane Bortzmeyer <bortzmeyer at nic dot fr> wrote:

>> The 'Description' field MAY thus include non-ASCII characters.
>
> I would prefer a positive wording:
>
> The 'Description' field MAY thus include UTF-8 characters.
>
> Yes, I know that ASCII characters are UTF-8, too but it seems clearer 
> that we mention the encoding we allow, rather than the more limited 
> one.

Making distinctions between "ASCII" and "UTF-8" (or "Unicode") tends to 
mislead people, and leads to such abominations as this, found in the 
online help for InterSystems Caché:

    "Valid characters may be 8-bit ASCII, or ISO Latin-1 Unicode."

I would prefer something like "The 'Description' field MAY thus include 
characters outside the Basic Latin range."

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages




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Stephane Bortzmeyer <bortzmeyer at nic dot fr> wrote:

> Better than the one in 4646bis-07 (which uses the word "meaningless", 
> while I recently noticed that "meaning" is used several times in the 
> draft, in a different sense).

I agree with Mark and others who have pointed out this misuse of 
"meaningless."  See Mark's posts for better examples than I can give.

> What about adding also in 2.2.9. "Classes of Conformance":
>
> <t>A tag is considered "real" if it is valid and if there are existing 
> resources available which match that tag. Unlike "well-formedness" and 
> "validity", "reality" is a fuzzy concept, and a moving one (new 
> resources can appear, making a tag real, without any change in the 
> registry). See <xref target="meaning"/>.</t>

I strongly object to any attempts to define "real" or "reality" in the 
language tagging document.  What do we want to be accused of?

Addison's "it might not represent any real language usage" should be 
understandable to all.  I might prefer "real-world" instead of "real," 
but that is nit-picking.

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages 



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Stephane Bortzmeyer wrote:
> On Wed, Aug 01, 2007 at 08:51:55AM -0700,
>  Addison Phillips <addison@yahoo-inc.com> wrote 
>  a message of 141 lines which said:
> 
>> How about this version instead:
> 
> Better than the one in 4646bis-07 (which uses the word "meaningless",
> while I recently noticed that "meaning" is used several times in the
> draft, in a different sense).

The "five minutes" elapsed before the thread got into high gear. 
Draft-08 will have my proposed text or some similar formulation.


> 
> What about adding also in 2.2.9. "Classes of Conformance":
> 
> <t>A tag is considered "real" if it is valid and if there are existing
> resources available which match that tag. Unlike "well-formedness" and
> "validity", "reality" is a fuzzy concept, and a moving one (new
> resources can appear, making a tag real, without any change in the
> registry). See <xref target="meaning"/>.</t>

-1

It think this goes over the top.

Addison

-- 
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.


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John Cowan wrote:
>>
>> The 'Description' field MAY thus include UTF-8 characters.
> 
> The point is that "ASCII" is both an encoding and a repertoire,
> whereas "UTF-8" is only an encoding.  The meaning is that the
> Description field may contain characters that are not in the
> ASCII repertoire (whereas most other fields must not).  The
> whole file is in the UTF-8 encoding.
> 

+1

If "non-ASCII" isn't sufficiently positive, a proper reformulation would be:

--
The 'Description' field MAY include the full range of Unicode 
characters. At least one of the 'Description' fields MUST be written or 
transcribed into the Latin script; additional 'Description' fields MAY 
also include a description in a non-Latin script.
--

Note that this reverses the existing order. The current text says:

--
At least one of the 'Description' fields MUST be written or transcribed 
into the Latin script; additional 'Description' fields MAY also include 
a description in a non-Latin script. The 'Description' field MAY thus 
include non-ASCII characters.
--

Addison

-- 
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.


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Doug Ewell wrote:
  I might prefer "real-world" instead of "real,"
> but that is nit-picking.
> 

Nonetheless, I have included the hyphenated version.

Addison

-- 
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.


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From: Peter Constable <petercon@microsoft.com>
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Subject: RE: [Ltru] Updated draft-4646bis...
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No, Mark had it right: there is a clear semantic. It just may not correspon=
d to any reality. "ar-Cyrl-CO" unambiguously means 'Arabic language as used=
 in Colombia, written in Cyrllic script". It refers to a unicorn in the rea=
lm of languages.


Peter



> -----Original Message-----
> From: Debbie Garside [mailto:debbie@ictmarketing.co.uk]
> Sent: Wednesday, August 01, 2007 5:44 AM
> To: addison@yahoo-inc.com; 'Marion Gunn'
> Cc: 'LTRU Working Group'
> Subject: RE: [Ltru] Updated draft-4646bis...
>
> Addison wrote:
>
> > A tag can be valid yet meaningless.
>
> I don't really like this as it seems, on the face of it, a
> contradiction in
> terms.  I would propose one of the following:
>
> ---
> A tag can be well formed yet meaningless.
>
> A tag can be well formed in terms of syntax, and thus valid, yet
> meaningless
> in terms of its attributes. For example, ...
>
> ---
>
> Best
>
> Debbie
>
> > -----Original Message-----
> > From: Addison Phillips [mailto:addison@yahoo-inc.com]
> > Sent: 31 July 2007 16:52
> > To: Marion Gunn
> > Cc: LTRU Working Group
> > Subject: Re: [Ltru] Updated draft-4646bis...
> >
> > Marion Gunn wrote:
> >  >
> >  > However, here goes with one more attempt:
> >  >
> >  > "For example, although a tag such as 'ar-Cyrl-CO' (Arabic,
> > as used in  > Columbia,  > written in Cyrillic script) is
> > valid, it is [most] unlikely to be of  > use, because  > such
> > combination of attributes is unlikely to occur in actual
> > language  > use."
> >  >
> >
> > I note that it is useful to look at the actual editor's copy
> > when suggesting minor editorial changes. Upon reflection, I
> > found the current sentence to be a bit of a run-on. I've
> > taken your suggestion of 'unlikely' and edited further such
> > that the paragraph now reads:
> >
> > <t>Validity of a tag is not everything. A tag can be valid
> > yet meaningless. This is unavoidable with a generative system
> > like the language subtag mechanism. For example, a tag such
> > as "ar-Cyrl-CO"
> > (Arabic, Cyrillic script, as used in Colombia) is perfectly valid.
> > However, it is unlikely to be a useful tag, as it represents
> > an unlikely combination of language attributes that is
> > probably unrelated to any real language usage.</t>
> >
> > After five minutes from now, you will need to comment on
> > draft-08. I'm always happy to consider editorial changes that
> > improve the text.
> >
> > Addison
> >
> > --
> > Addison Phillips
> > Globalization Architect -- Yahoo! Inc.
> > Chair -- W3C Internationalization Core WG
> >
> > Internationalization is an architecture.
> > It is not a feature.
> >
> >
> > _______________________________________________
> > Ltru mailing list
> > Ltru@ietf.org
> > https://www1.ietf.org/mailman/listinfo/ltru
> >
> >
>
>
>
>
>
>
> _______________________________________________
> Ltru mailing list
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From: Peter Constable <petercon@microsoft.com>
To: LTRU Working Group <ltru@ietf.org>
Date: Thu, 2 Aug 2007 10:15:06 -0700
Subject: RE: [Ltru] Updated draft-4646bis...
Thread-Topic: [Ltru] Updated draft-4646bis...
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Wah!? Combining the variant tag fonipa with Kore shouldn't be valid, though=
 I guess we don't have a way to block it at present. (It would take some aw=
kward combination of  "must have script subtag Latn" OR "must have a lang s=
ubtag with Suppress-Script of 'Latn'".)

But apart from that, the wording is fine.


Peter

From: Mark Davis [mailto:mark.davis@icu-project.org]
Sent: Wednesday, August 01, 2007 9:06 AM
To: Addison Phillips
Cc: LTRU Working Group
Subject: Re: [Ltru] Updated draft-4646bis...

That's fine by me.
On 8/1/07, Addison Phillips <addison@yahoo-inc.com<mailto:addison@yahoo-inc=
.com>> wrote:
You have to read the document. The terms "valid" and "well-formed" have
a different meaning in the context of RFC 4646/4646bis. The term "valid"
was chosen carefully in this context.

Mark and others are correct that every tag has *a* meaning (we even
spell out the one for the "meaningless" tag in the example). But that
does not mean that every tag is *meaningful*.

How about this version instead:


<t>Validity of a tag is not everything. While every valid tag has a
meaning, it might not represent any real language usage. This is
unavoidable in a system in which subtags can be combined freely. For
example, tags such as "ar-Cyrl-CO" (Arabic, Cyrillic script, as used in
Colombia ) or "tlh-Kore-AQ-fonipa" (Klingon, Korean script, as used in
Antarctica, IPA phonetic transcription) are both valid and unlikely to
represent a useful combination of language attributes.</t>

Addison

David Dalby wrote:
> I agree!
>
> David
>
>  _____________________________________________________
>
> Dr David Dalby
> The Linguasphere Observatory
> Hebron
> Whitland
> Wales
> SA34 0XT
>
> -----Original Message-----
> From: Debbie Garside [mailto: debbie@ictmarketing.co.uk<mailto:debbie@ict=
marketing.co.uk>]
> Sent: 01 August 2007 13:44
> To: addison@yahoo-inc.com<mailto:addison@yahoo-inc.com>; 'Marion Gunn'
> Cc: 'LTRU Working Group'
> Subject: RE: [Ltru] Updated draft-4646bis...
>
> Addison wrote:
>
>> A tag can be valid yet meaningless.
>
> I don't really like this as it seems, on the face of it, a contradiction =
in
> terms.  I would propose one of the following:
>
> ---
> A tag can be well formed yet meaningless.
>
> A tag can be well formed in terms of syntax, and thus valid, yet meaningl=
ess
> in terms of its attributes. For example, ...
>
> ---
>
> Best
>
> Debbie
>
>> -----Original Message-----
>> From: Addison Phillips [mailto:addison@yahoo-inc.com<mailto:addison@yaho=
o-inc.com>]
>> Sent: 31 July 2007 16:52
>> To: Marion Gunn
>> Cc: LTRU Working Group
>> Subject: Re: [Ltru] Updated draft-4646bis...
>>
>> Marion Gunn wrote:
>>  >
>>  > However, here goes with one more attempt:
>>  >
>>  > "For example, although a tag such as 'ar-Cyrl-CO' (Arabic,
>> as used in  > Columbia,  > written in Cyrillic script) is
>> valid, it is [most] unlikely to be of  > use, because  > such
>> combination of attributes is unlikely to occur in actual
>> language  > use."
>>  >
>>
>> I note that it is useful to look at the actual editor's copy
>> when suggesting minor editorial changes. Upon reflection, I
>> found the current sentence to be a bit of a run-on. I've
>> taken your suggestion of 'unlikely' and edited further such
>> that the paragraph now reads:
>>
>> <t>Validity of a tag is not everything. A tag can be valid
>> yet meaningless. This is unavoidable with a generative system
>> like the language subtag mechanism. For example, a tag such
>> as "ar-Cyrl-CO"
>> (Arabic, Cyrillic script, as used in Colombia) is perfectly valid.
>> However, it is unlikely to be a useful tag, as it represents
>> an unlikely combination of language attributes that is
>> probably unrelated to any real language usage.</t>
>>
>> After five minutes from now, you will need to comment on
>> draft-08. I'm always happy to consider editorial changes that
>> improve the text.
>>
>> Addison
>>
>> --
>> Addison Phillips
>> Globalization Architect -- Yahoo! Inc.
>> Chair -- W3C Internationalization Core WG
>>
>> Internationalization is an architecture.
>> It is not a feature.
>>
>>
>> _______________________________________________
>> Ltru mailing list
>> Ltru@ietf.org<mailto:Ltru@ietf.org>
>> https://www1.ietf.org/mailman/listinfo/ltru
>>
>>
>
>
>
>
>
>
> _______________________________________________
> Ltru mailing list
> Ltru@ietf.org<mailto:Ltru@ietf.org>
> https://www1.ietf.org/mailman/listinfo/ltru
>
>

--
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.


_______________________________________________
Ltru mailing list
Ltru@ietf.org<mailto:Ltru@ietf.org>
https://www1.ietf.org/mailman/listinfo/ltru



--
Mark

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<p class=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Calibri",=
"sans-serif";
color:#1F497D'>Wah!? Combining the variant tag fonipa with Kore shouldn&#82=
17;t be
valid, though I guess we don&#8217;t have a way to block it at present. (It=
 would
take some awkward combination of &nbsp;&#8220;must have script subtag Latn&=
#8221; OR &#8220;must have
a lang subtag with Suppress-Script of &#8216;Latn&#8217;&#8221;.)<o:p></o:p=
></span></p>

<p class=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Calibri",=
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color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Calibri",=
"sans-serif";
color:#1F497D'>But apart from that, the wording is fine.<o:p></o:p></span><=
/p>

<p class=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Calibri",=
"sans-serif";
color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Calibri",=
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color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Calibri",=
"sans-serif";
color:#1F497D'>Peter<o:p></o:p></span></p>

<p class=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Calibri",=
"sans-serif";
color:#1F497D'><o:p>&nbsp;</o:p></span></p>

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<div>

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0in 0in'>

<p class=3DMsoNormal><b><span style=3D'font-size:10.0pt;font-family:"Tahoma=
","sans-serif"'>From:</span></b><span
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Mark Davis
[mailto:mark.davis@icu-project.org] <br>
<b>Sent:</b> Wednesday, August 01, 2007 9:06 AM<br>
<b>To:</b> Addison Phillips<br>
<b>Cc:</b> LTRU Working Group<br>
<b>Subject:</b> Re: [Ltru] Updated draft-4646bis...<o:p></o:p></span></p>

</div>

</div>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal style=3D'margin-bottom:12.0pt'>That's fine by me.<o:p>=
</o:p></p>

<div>

<p class=3DMsoNormal><span class=3Dgmailquote>On 8/1/07, <b>Addison Phillip=
s</b>
&lt;<a href=3D"mailto:addison@yahoo-inc.com">addison@yahoo-inc.com</a>&gt; =
wrote:</span><o:p></o:p></p>

<p class=3DMsoNormal>You have to read the document. The terms &quot;valid&q=
uot;
and &quot;well-formed&quot; have<br>
a different meaning in the context of RFC 4646/4646bis. The term
&quot;valid&quot;<br>
was chosen carefully in this context.<br>
<br>
Mark and others are correct that every tag has *a* meaning (we even<br>
spell out the one for the &quot;meaningless&quot; tag in the example). But =
that<br>
does not mean that every tag is *meaningful*.<br>
<br>
How about this version instead: <br>
<br>
<br>
&lt;t&gt;Validity of a tag is not everything. While every valid tag has a<b=
r>
meaning, it might not represent any real language usage. This is<br>
unavoidable in a system in which subtags can be combined freely. For <br>
example, tags such as &quot;ar-Cyrl-CO&quot; (Arabic, Cyrillic script, as u=
sed
in<br>
Colombia ) or &quot;tlh-Kore-AQ-fonipa&quot; (Klingon, Korean script, as us=
ed
in<br>
Antarctica, IPA phonetic transcription) are both valid and unlikely to <br>
represent a useful combination of language attributes.&lt;/t&gt;<br>
<br>
Addison<br>
<br>
David Dalby wrote:<br>
&gt; I agree!<br>
&gt;<br>
&gt; David<br>
&gt;<br>
&gt;&nbsp;&nbsp;_____________________________________________________<br>
&gt;<br>
&gt; Dr David Dalby<br>
&gt; The Linguasphere Observatory<br>
&gt; Hebron<br>
&gt; Whitland<br>
&gt; Wales<br>
&gt; SA34 0XT<br>
&gt;<br>
&gt; -----Original Message-----<br>
&gt; From: Debbie Garside [mailto:<a href=3D"mailto:debbie@ictmarketing.co.=
uk">
debbie@ictmarketing.co.uk</a>]<br>
&gt; Sent: 01 August 2007 13:44<br>
&gt; To: <a href=3D"mailto:addison@yahoo-inc.com">addison@yahoo-inc.com</a>=
;
'Marion Gunn'<br>
&gt; Cc: 'LTRU Working Group'<br>
&gt; Subject: RE: [Ltru] Updated draft-4646bis... <br>
&gt;<br>
&gt; Addison wrote:<br>
&gt;<br>
&gt;&gt; A tag can be valid yet meaningless.<br>
&gt;<br>
&gt; I don't really like this as it seems, on the face of it, a contradicti=
on
in<br>
&gt; terms.&nbsp;&nbsp;I would propose one of the following: <br>
&gt;<br>
&gt; ---<br>
&gt; A tag can be well formed yet meaningless.<br>
&gt;<br>
&gt; A tag can be well formed in terms of syntax, and thus valid, yet
meaningless<br>
&gt; in terms of its attributes. For example, ...<br>
&gt; <br>
&gt; ---<br>
&gt;<br>
&gt; Best<br>
&gt;<br>
&gt; Debbie<br>
&gt;<br>
&gt;&gt; -----Original Message-----<br>
&gt;&gt; From: Addison Phillips [mailto:<a href=3D"mailto:addison@yahoo-inc=
.com">addison@yahoo-inc.com</a>]<br>
&gt;&gt; Sent: 31 July 2007 16:52 <br>
&gt;&gt; To: Marion Gunn<br>
&gt;&gt; Cc: LTRU Working Group<br>
&gt;&gt; Subject: Re: [Ltru] Updated draft-4646bis...<br>
&gt;&gt;<br>
&gt;&gt; Marion Gunn wrote:<br>
&gt;&gt;&nbsp;&nbsp;&gt;<br>
&gt;&gt;&nbsp;&nbsp;&gt; However, here goes with one more attempt: <br>
&gt;&gt;&nbsp;&nbsp;&gt;<br>
&gt;&gt;&nbsp;&nbsp;&gt; &quot;For example, although a tag such as 'ar-Cyrl=
-CO'
(Arabic,<br>
&gt;&gt; as used in&nbsp;&nbsp;&gt; Columbia,&nbsp;&nbsp;&gt; written in
Cyrillic script) is<br>
&gt;&gt; valid, it is [most] unlikely to be of&nbsp;&nbsp;&gt; use,
because&nbsp;&nbsp;&gt; such <br>
&gt;&gt; combination of attributes is unlikely to occur in actual<br>
&gt;&gt; language&nbsp;&nbsp;&gt; use.&quot;<br>
&gt;&gt;&nbsp;&nbsp;&gt;<br>
&gt;&gt;<br>
&gt;&gt; I note that it is useful to look at the actual editor's copy<br>
&gt;&gt; when suggesting minor editorial changes. Upon reflection, I <br>
&gt;&gt; found the current sentence to be a bit of a run-on. I've<br>
&gt;&gt; taken your suggestion of 'unlikely' and edited further such<br>
&gt;&gt; that the paragraph now reads:<br>
&gt;&gt;<br>
&gt;&gt; &lt;t&gt;Validity of a tag is not everything. A tag can be valid <=
br>
&gt;&gt; yet meaningless. This is unavoidable with a generative system<br>
&gt;&gt; like the language subtag mechanism. For example, a tag such<br>
&gt;&gt; as &quot;ar-Cyrl-CO&quot;<br>
&gt;&gt; (Arabic, Cyrillic script, as used in Colombia) is perfectly valid.=
 <br>
&gt;&gt; However, it is unlikely to be a useful tag, as it represents<br>
&gt;&gt; an unlikely combination of language attributes that is<br>
&gt;&gt; probably unrelated to any real language usage.&lt;/t&gt;<br>
&gt;&gt; <br>
&gt;&gt; After five minutes from now, you will need to comment on<br>
&gt;&gt; draft-08. I'm always happy to consider editorial changes that<br>
&gt;&gt; improve the text.<br>
&gt;&gt;<br>
&gt;&gt; Addison<br>
&gt;&gt; <br>
&gt;&gt; --<br>
&gt;&gt; Addison Phillips<br>
&gt;&gt; Globalization Architect -- Yahoo! Inc.<br>
&gt;&gt; Chair -- W3C Internationalization Core WG<br>
&gt;&gt;<br>
&gt;&gt; Internationalization is an architecture.<br>
&gt;&gt; It is not a feature. <br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; _______________________________________________<br>
&gt;&gt; Ltru mailing list<br>
&gt;&gt; <a href=3D"mailto:Ltru@ietf.org">Ltru@ietf.org</a><br>
&gt;&gt; <a href=3D"https://www1.ietf.org/mailman/listinfo/ltru">https://ww=
w1.ietf.org/mailman/listinfo/ltru</a><br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;<br>
&gt;<br>
&gt;<br>
&gt;<br>
&gt;<br>
&gt;<br>
&gt; _______________________________________________<br>
&gt; Ltru mailing list<br>
&gt; <a href=3D"mailto:Ltru@ietf.org">Ltru@ietf.org</a><br>
&gt; <a href=3D"https://www1.ietf.org/mailman/listinfo/ltru">https://www1.i=
etf.org/mailman/listinfo/ltru</a><br>
&gt;<br>
&gt;<br>
<br>
--<br>
Addison Phillips<br>
Globalization Architect -- Yahoo! Inc.<br>
Chair -- W3C Internationalization Core WG <br>
<br>
Internationalization is an architecture.<br>
It is not a feature.<br>
<br>
<br>
_______________________________________________<br>
Ltru mailing list<br>
<a href=3D"mailto:Ltru@ietf.org">Ltru@ietf.org</a><br>
<a href=3D"https://www1.ietf.org/mailman/listinfo/ltru">https://www1.ietf.o=
rg/mailman/listinfo/ltru</a><o:p></o:p></p>

</div>

<p class=3DMsoNormal><br>
<br clear=3Dall>
<br>
-- <br>
Mark <o:p></o:p></p>

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From ltru-bounces@ietf.org Thu Aug 02 22:18:50 2007
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From: "Doug Ewell" <dewell@roadrunner.com>
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Subject: [Ltru] Re: UTF-8 in which field? (Was: draft-ietf-ltru-4646bis-07
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Addison Phillips <addison at yahoo dash inc dot com> wrote:

> If "non-ASCII" isn't sufficiently positive, a proper reformulation 
> would be:
>
> --
> The 'Description' field MAY include the full range of Unicode 
> characters. At least one of the 'Description' fields MUST be written 
> or transcribed into the Latin script; additional 'Description' fields 
> MAY also include a description in a non-Latin script.

I like this quite a bit, and one of the things I like about it is what 
it does NOT say.  It does NOT say that at least one of the Description 
fields must be written or transcribed into pure ASCII.

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages



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From ltru-bounces@ietf.org Fri Aug 03 02:20:06 2007
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Subject: Re: [Ltru] Re: UTF-8 in which field? (Was: draft-ietf-ltru-4646bis-07
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Doug Ewell wrote:
> 
>> If "non-ASCII" isn't sufficiently positive, a proper reformulation 
>> would be:
>>
>> -- 
>> The 'Description' field MAY include the full range of Unicode 
>> characters. At least one of the 'Description' fields MUST be written 
>> or transcribed into the Latin script; additional 'Description' fields 
>> MAY also include a description in a non-Latin script.
> 
> I like this quite a bit, and one of the things I like about it is what 
> it does NOT say.  It does NOT say that at least one of the Description 
> fields must be written or transcribed into pure ASCII.
> 

Cool. Although I note that this is not novel. RFC 4646 says exactly 
that. And on purpose too.

Addison

-- 
Addison Phillips
Unicadet

Internationalization is an architecture.
It is not a feature.


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From ltru-bounces@ietf.org Fri Aug 03 09:46:05 2007
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Subject: Re: [Ltru] Re: UTF-8 in which field? (Was: draft-ietf-ltru-4646bis-07
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Addison Phillips <addison at yahoo dash inc dot com> wrote:

>> I like this quite a bit, and one of the things I like about it is 
>> what it does NOT say.  It does NOT say that at least one of the 
>> Description fields must be written or transcribed into pure ASCII.
>
> Cool. Although I note that this is not novel. RFC 4646 says exactly 
> that. And on purpose too.

Yes, but since it seems to have become a bit controversial of late, it's 
good to see that it isn't changing.

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages



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From ltru-bounces@ietf.org Fri Aug 03 10:15:28 2007
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From: "Doug Ewell" <dewell@roadrunner.com>
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Peter Constable <petercon at microsoft dot com> wrote:

> Wah!? Combining the variant tag fonipa with Kore shouldn't be valid, 
> though I guess we don't have a way to block it at present. (It would 
> take some awkward combination of  "must have script subtag Latn" OR 
> "must have a lang subtag with Suppress-Script of 'Latn'".)

Which is a place we really don't want to go.  "Tag content wisely" is 
the best way to prevent such tags.

But I would rather see a different language-script-region-variant 
combination that doesn't call quite so much attention to the ability to 
create semantically contradictory tags.  The passage is supposed to be 
about semantically consistent tags that refer to non-existent language 
variations.

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages



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From ltru-bounces@ietf.org Fri Aug 03 10:39:58 2007
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Doug mentioned:
 > The passage is supposed to be
 > about semantically consistent tags that refer to non-existent language
 > variations.

I'm not sure that it is. The section is about "valid-yet-useless" tags, 
which includes, I assume, absurdities. I didn't want to create an 
absurdity by ignoring Prefix. Thus the "problem" (if you can call it 
that) is a dearth of generic variants.

We could use "tlh-Cyrl-AQ-fonupa", I suppose, or maybe 
"eu-Cyrl-SN-fonupa" (Basque, Cyrillic, Senegal, UPA transcription).

Addison

-- 
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.


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From: Peter Constable <petercon@microsoft.com>
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Subject: RE: [Ltru] Re: Updated draft-4646bis...
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Arabic as used in Colombia written in Cyrillic is not an absurdity. It's pe=
rfectly reasonable; it just doesn't happen to be real.

But you do already have an absurdity: IPA transcription in Korean script: b=
y definition, IPA must be in Latin script. (That's different from phonetic =
transcription in Korean script, which does exist, BTW.)

In your Klingon and Basque examples, the particular languages, script or re=
gions used do not contribute to the absurdity, though some might wrongly pe=
rceive that to be the case. It is only the combination of fonupa with Cyrl =
that is absurd.


Peter


> -----Original Message-----
> From: Addison Phillips [mailto:addison@yahoo-inc.com]
> Sent: Friday, August 03, 2007 7:39 AM
> To: Doug Ewell
> Cc: LTRU Working Group
> Subject: Re: [Ltru] Re: Updated draft-4646bis...
>
> Doug mentioned:
>  > The passage is supposed to be
>  > about semantically consistent tags that refer to non-existent
> language
>  > variations.
>
> I'm not sure that it is. The section is about "valid-yet-useless" tags,
> which includes, I assume, absurdities. I didn't want to create an
> absurdity by ignoring Prefix. Thus the "problem" (if you can call it
> that) is a dearth of generic variants.
>
> We could use "tlh-Cyrl-AQ-fonupa", I suppose, or maybe
> "eu-Cyrl-SN-fonupa" (Basque, Cyrillic, Senegal, UPA transcription).
>
> Addison
>
> --
> Addison Phillips
> Globalization Architect -- Yahoo! Inc.
> Chair -- W3C Internationalization Core WG
>
> Internationalization is an architecture.
> It is not a feature.
>
>
> _______________________________________________
> Ltru mailing list
> Ltru@ietf.org
> https://www1.ietf.org/mailman/listinfo/ltru


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All,

I need to update some tagging in a language list here at Sony Pictures. My 
current language requirement for Chinese languages is:

Audio Languages: Used for dubbing and original language content.

* Chinese (No other variant information known) = zh
* Chinese (Mandarin, PRC) = zh-cmn-CN
* Chinese (Mandarin, Taiwanese variant) = zh-cmn-TW
* Chinese (Cantonese) = zh-yue
* Chinese (Taiwanese) = zh-min-nan

Text Languages: Used for localization of language other than the original 
language as well as captions and subtitles. Subtitles may also occur in an 
original version that features more than one language.

* Chinese (No other variant information known) = zh
* Chinese (Mandarin, Traditional) = zh-cmn-Hant
* Chinese (Mandarin, Simplified) = zh-cmn-Hans
* Chinese (Cantonese) = zh-yue
* Chinese (Taiwanese) = zh-min-nan

I'm not sure if we closed the discussion on whether "zh-cmn" or "cmn" will 
be preferred in RFC 4646bis. Of these tags, which are most likely to be 
deprecated in the new regime? It's unclear to me how I should code 
Mandarin, Cantonese, and Taiwanese if I want the best chance of being 
compatible with the preferred tagging to be determined by this committee 
at a later date. I thought this business scenario might help the 
discussion, if this issue is not resolved yet. I looked through the 
archive and it doesn't look like this issue is closed. To me, the "zh" in 
these tags (especially written language categories) seems helpful.

Regards,

Karen Broome
Metadata Systems Designer
Sony Pictures Entertainment
310.244.4384

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<br><font size=2 face="sans-serif">All,</font>
<br>
<br><font size=2 face="sans-serif">I need to update some tagging in a language
list here at Sony Pictures. My current language requirement for Chinese
languages is:</font>
<br>
<br><font size=2 face="sans-serif">Audio Languages: Used for dubbing and
original language content.</font>
<br>
<br><font size=2 face="sans-serif">* Chinese (No other variant information
known) = zh</font>
<br><font size=2 face="sans-serif">* Chinese (Mandarin, PRC) = zh-cmn-CN</font>
<br><font size=2 face="sans-serif">* Chinese (Mandarin, Taiwanese variant)
= zh-cmn-TW</font>
<br><font size=2 face="sans-serif">* Chinese (Cantonese) = zh-yue</font>
<br><font size=2 face="sans-serif">* Chinese (Taiwanese) = zh-min-nan</font>
<br>
<br><font size=2 face="sans-serif">Text Languages: Used for localization
of language other than the original language as well as captions and subtitles.
Subtitles may also occur in an original version that features more than
one language.</font>
<br>
<br><font size=2 face="sans-serif">* Chinese (No other variant information
known) = zh</font>
<br><font size=2 face="sans-serif">* Chinese (Mandarin, Traditional) =
zh-cmn-Hant</font>
<br><font size=2 face="sans-serif">* Chinese (Mandarin, Simplified) = zh-cmn-Hans</font>
<br><font size=2 face="sans-serif">* Chinese (Cantonese) = zh-yue</font>
<br><font size=2 face="sans-serif">* Chinese (Taiwanese) = zh-min-nan</font>
<br>
<br><font size=2 face="sans-serif">I'm not sure if we closed the discussion
on whether &quot;zh-cmn&quot; or &quot;cmn&quot; will be preferred in RFC
4646bis. Of these tags, which are most likely to be deprecated in the new
regime? It's unclear to me how I should code Mandarin, Cantonese, and Taiwanese
if I want the best chance of being compatible with the preferred tagging
to be determined by this committee at a later date. I thought this business
scenario might help the discussion, if this issue is not resolved yet.
I looked through the archive and it doesn't look like this issue is closed.
To me, the &quot;zh&quot; in these tags (especially written language categories)
seems helpful.</font>
<br>
<br><font size=2 face="sans-serif">Regards,</font>
<br>
<br><font size=2 face="sans-serif">Karen Broome<br>
Metadata Systems Designer<br>
Sony Pictures Entertainment<br>
310.244.4384</font>
<br>
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From ltru-bounces@ietf.org Sat Aug 04 12:29:11 2007
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From: "Doug Ewell" <dewell@roadrunner.com>
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<Karen underscore Broome at spe dot sony dot com> wrote:

> I'm not sure if we closed the discussion on whether "zh-cmn" or "cmn" 
> will be preferred in RFC 4646bis. Of these tags, which are most likely 
> to be deprecated in the new regime? It's unclear to me how I should 
> code Mandarin, Cantonese, and Taiwanese if I want the best chance of 
> being compatible with the preferred tagging to be determined by this 
> committee at a later date. I thought this business scenario might help 
> the discussion, if this issue is not resolved yet. I looked through 
> the archive and it doesn't look like this issue is closed.

The issue is not closed.  I'm hoping to see a resolution in the near 
future so that I can write draft-4645bis-02 against the agreed-upon 
model (extlang, Macrolanguage, or both).  Probably there will not be a 
quick resolution, and I will have to "fall back" to the model used by 
Addison in draft-4646bis-07 (i.e. "both").

For reference:

Extlang model:
    Type: extlang
    Subtag: cmn
    Description: Mandarin Chinese
    Description: Chinese, Mandarin
    Added: 2029-09-09
    Prefix: zh

Macrolanguage model:
    Type: language
    Subtag: cmn
    Description: Mandarin Chinese
    Description: Chinese, Mandarin
    Added: 2029-09-09
    Macrolanguage: zh

"Both" model:
    Type: extlang
    Subtag: cmn
    Description: Mandarin Chinese
    Description: Chinese, Mandarin
    Added: 2029-09-09
    Macrolanguage: zh
    Prefix: zh

Note that in the "both" model, the Macrolanguage and Prefix fields are 
identical except in the few cases where the encompassed language already 
existed in ISO 639-2, and thus in the Registry.

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages 



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From ltru-bounces@ietf.org Mon Aug 06 02:52:20 2007
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From: "Doug Ewell" <dewell@roadrunner.com>
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Subject: [Ltru] Apostrophes
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This is a proposal for RFC 4645bis and ultimately for the registration 
process performed on the ietf-languages list, although I have not copied 
this message to that list.  I expect it to be controversial, and I am 
willing to be talked out of it, but I believe it has merit.

In arguing for the conversion of the Registry from hex NCRs to UTF-8, 
the issue of readability of both formats came up repeatedly.  There were 
several calls, mostly from one participant, to supply an ASCII-only 
"compatibility" Registry, similar to the Latin-1-only code lists 
supplied by the ISO 639-2 and -3 maintenance agencies.  There have also 
been proposals to add additional Description or Comments fields which 
simply duplicate the existing fields in plain ASCII.

I don't support either of these approaches because non-ASCII characters 
are often an integral part of the description or comment, and will 
become even more so in the RFC 4646bis era, as we add pairs of languages 
whose names differ only by an accented vs. unaccented letter (such as 
Arua and Aruá; the latter is spelled A, r, u, a-with-acute).  We need to 
maintain these distinctions to preserve the identity of the language or 
other entity represented by each subtag, which is what descriptions are 
for.

However, there is one place where we could simplify, or regularize, the 
characters used in certain Description fields without sacrificing 
legibility, uniqueness, or identity.  These are the various apostrophes 
and apostrophe-like modifier letters.

Right now, the following apostrophes and modifier letters appear in 
Description fields in the Registry:

U+0027 APOSTROPHE
    Description: Mi'kmaq
    Description: Ethiopic (Ge'ez)
    Description: Ol Chiki (Ol Cemet', Ol, Santali)
    Description: C&#xF4;te d'Ivoire
    Description: Korea, Democratic People's Republic of
    Description: Lao People's Democratic Republic

U+00B4 ACUTE ACCENT
    Description: Gwich&#xB4;in

U+02BB MODIFIER LETTER TURNED COMMA
    Description: Ethiopic (Ge&#x2BB;ez)

U+2019 RIGHT SINGLE QUOTATION MARK
    Description: N&#x2019;Ko  (both language and script)

Most people seem to agree that the acute accent used in Gwich'in was a 
mistake, but we used it in the Registry anyway to be perfectly faithful 
to the source standard.  RFC 4646, however, does not require this type 
of perfect fidelity, while draft-4646bis-07 adds only the following of 
relevance:

    "For fields of type 'language' or 'extlang', the first 'Description'
    field appearing in the Registry corresponds to the Reference Name
    assigned by ISO 639-3."

"Corresponds to" is not the same as "is character-for-character 
equivalent to."

The ISO 639-3 data includes 117 names containing U+0027, and none 
containing any other form of apostrophe.  This introduces a kind of 
inconsistency in which we have chosen certain types of apostrophes or 
apostrophe-like modifier letters in isolated cases, in a noble attempt 
to use "the right character," but also want to maintain fidelity with 
source standards that may not have this as a goal.  We frankly don't 
know which of the names in ISO 639-3 really "should" use some other type 
of apostrophe; indeed, ISO 639-3 spells "N'Ko" with U+0027.

In reality, even where U+0027 is not "the right character" for a given 
name, most users will expect to see it and to be able to search on it 
any time they see an apostrophe-like character.  Unlike the various 
accented letters, the apostrophes all look pretty much the same in small 
type sizes.  No Description fields in the Registry are now, or will be 
in the 4646bis era, distinguished only by the type of apostrophe used; 
this will not be true for other types of non-ASCII letters, as mentioned 
above.

Likewise, it seems quite unlikely that any user will perform lexical 
analysis on Description or Comments fields, such that strings containing 
the "wrong" apostrophe will be processed incorrectly in some way.

I propose the following:

1.  In RFC 4645bis, all apostrophes and apostrophe-like modifier letters 
that appear either in the current Registry or in one of the source 
standards be transformed to the plain ASCII apostrophe, U+0027.

2.  Existing pairs of Description fields that differ only in the type of 
apostrophe (e.g. "Ethiopic (Ge'ez)") be reduced to a single field.

3.  Future registrations use only U+0027 in place of other 
apostrophe-like characters.

I believe items 1 and 2 affect only RFC 4645bis, but I invite the 
editors and others to check whether 4646bis is affected as well.

Again, cogent arguments against this proposal are likely to be more 
productive than flames.

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages



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Why are you asking me, Doug? You know what my view is.
-- 
Michael Everson * http://www.evertype.com


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Doug Ewell wrote:
> 
> "Corresponds to" is not the same as "is character-for-character 
> equivalent to."
> 

You're right, although I tend to think that "corresponds to" usually 
means "equals" rather than "is similar to".

Addison

-- 
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Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
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From ltru-bounces@ietf.org Mon Aug 06 12:53:59 2007
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Doug Ewell wrote:
> 
> I propose the following:
> 
> 1.  In RFC 4645bis, all apostrophes and apostrophe-like modifier letters 
> that appear either in the current Registry or in one of the source 
> standards be transformed to the plain ASCII apostrophe, U+0027.
> 
> 2.  Existing pairs of Description fields that differ only in the type of 
> apostrophe (e.g. "Ethiopic (Ge'ez)") be reduced to a single field.

Yes, please.

> 
> 3.  Future registrations use only U+0027 in place of other 
> apostrophe-like characters.
> 
> I believe items 1 and 2 affect only RFC 4645bis, but I invite the 
> editors and others to check whether 4646bis is affected as well.

RFC 4646bis would be affected if and only if we feel the need to 
prescribe this. I note that the sentence you quoted elsewhere in this 
message occurs in this paragraph:

--
For records taken from a source standard (such as ISO 639 or ISO 3166), 
the 'Description' value(s) SHOULD also be taken from the source 
standard. Multiple descriptions in the source standard MUST be split 
into separate 'Description' fields. The source standard's descriptions 
MAY be edited, either prior to insertion or via the registration 
process. For fields of type 'language' or 'extlang', the first 
'Description' field appearing in the Registry corresponds to the 
Reference Name assigned by ISO 639-3. This helps facilitate 
cross-referencing between ISO 639 and the registry.
--

This suggests to me that we can safely ignore this issue in 4646bis, 
trusting to the Language Subtag Reviewer and/or the reviewer's trusty 
deputy to make these sorts of edits as a matter of policy.

At that same time, I tend to think the the first 'Description' field in 
a language subtag should be character-for-character equivalent to ISO 
639-3, regardless of whether we like it or not. The stated purpose is 
cross-referencing and my browser's search function does 
character-by-character identity. You can always have a second, edited, 
version.

Addison

-- 
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.


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Doug Ewell scripsit:

> I propose the following:

+1 to all

-- 
You're a brave man! Go and break through the            John Cowan
lines, and remember while you're out there              cowan@ccil.org
risking life and limb through shot and shell,           http://ccil.org/~cowan
we'll be in here thinking what a sucker you are!
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Subject: [Ltru] Serbo-Croatian Deprecations and Variants
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Another practical question to consider in the new era.... I know Peter and 
I discussed this in the past, but I'm not sure if we raised the question 
to the rest of the group and it hasn't come up since 639-3 was published.

What should I do with films that have been categorized as Serbo-Croatian 
in the past? The language isn't suddenly different because the political 
climate changed since the films were first made. The distinction between 
Serbian and Croatian is not particularly significant in audio works, so we 
may not find it useful (from a business perspective) to do the research to 
make guesses as to whether any given film is more Serbian or Croatian. I 
am not talking about textual forms of the language -- only audio uses.

If I wish to maintain classifications previously made against this 
deprecated language that is now back in business in 639-3, would I extend 
the deprecated 639-1 prefix and include the 639-3 code; use one of the 
deprecated 639-2 codes; or just use the new 639-3 code alone? Which of 
these options is most "wise"?

I'm only considering this question in terms of spoken content and I 
realize we don't have the answer for this yet. But I figure answers start 
with questions (despite my studio's affiliation with "Jeopardy").

Regards,

Karen Broome





Karen_Broome@spe.sony.com 
08/03/2007 01:40 PM

To
LTRU Working Group <ltru@ietf.org>
cc

Subject
[Ltru] Question on variants







All, 

I need to update some tagging in a language list here at Sony Pictures. My 
current language requirement for Chinese languages is: 

Audio Languages: Used for dubbing and original language content. 

* Chinese (No other variant information known) = zh 
* Chinese (Mandarin, PRC) = zh-cmn-CN 
* Chinese (Mandarin, Taiwanese variant) = zh-cmn-TW 
* Chinese (Cantonese) = zh-yue 
* Chinese (Taiwanese) = zh-min-nan 

Text Languages: Used for localization of language other than the original 
language as well as captions and subtitles. Subtitles may also occur in an 
original version that features more than one language. 

* Chinese (No other variant information known) = zh 
* Chinese (Mandarin, Traditional) = zh-cmn-Hant 
* Chinese (Mandarin, Simplified) = zh-cmn-Hans 
* Chinese (Cantonese) = zh-yue 
* Chinese (Taiwanese) = zh-min-nan 

I'm not sure if we closed the discussion on whether "zh-cmn" or "cmn" will 
be preferred in RFC 4646bis. Of these tags, which are most likely to be 
deprecated in the new regime? It's unclear to me how I should code 
Mandarin, Cantonese, and Taiwanese if I want the best chance of being 
compatible with the preferred tagging to be determined by this committee 
at a later date. I thought this business scenario might help the 
discussion, if this issue is not resolved yet. I looked through the 
archive and it doesn't look like this issue is closed. To me, the "zh" in 
these tags (especially written language categories) seems helpful. 

Regards, 

Karen Broome
Metadata Systems Designer
Sony Pictures Entertainment
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<br><font size=2 face="sans-serif">Another practical question to consider
in the new era.... I know Peter and I discussed this in the past, but I'm
not sure if we raised the question to the rest of the group and it hasn't
come up since 639-3 was published.</font>
<br>
<br><font size=2 face="sans-serif">What should I do with films that have
been categorized as Serbo-Croatian in the past? The language isn't suddenly
different because the political climate changed since the films were first
made. The distinction between Serbian and Croatian is not particularly
significant in audio works, so we may not find it useful (from a business
perspective) to do the research to make guesses as to whether any given
film is more Serbian or Croatian. I am not talking about textual forms
of the language -- only audio uses.</font>
<br>
<br><font size=2 face="sans-serif">If I wish to maintain classifications
previously made against this deprecated language that is now back in business
in 639-3, would I extend the deprecated 639-1 prefix and include the 639-3
code; use one of the deprecated 639-2 codes; or just use the new 639-3
code alone? Which of these options is most &quot;wise&quot;?</font>
<br>
<br><font size=2 face="sans-serif">I'm only considering this question in
terms of spoken content and I realize we don't have the answer for this
yet. But I figure answers start with questions (despite my studio's affiliation
with &quot;Jeopardy&quot;).</font>
<br>
<br><font size=2 face="sans-serif">Regards,</font>
<br>
<br><font size=2 face="sans-serif">Karen Broome</font>
<br>
<br>
<br>
<br>
<br>
<table width=100%>
<tr valign=top>
<td width=40%><font size=1 face="sans-serif"><b>Karen_Broome@spe.sony.com</b>
</font>
<p><font size=1 face="sans-serif">08/03/2007 01:40 PM</font>
<td width=59%>
<table width=100%>
<tr valign=top>
<td>
<div align=right><font size=1 face="sans-serif">To</font></div>
<td><font size=1 face="sans-serif">LTRU Working Group &lt;ltru@ietf.org&gt;</font>
<tr valign=top>
<td>
<div align=right><font size=1 face="sans-serif">cc</font></div>
<td>
<tr valign=top>
<td>
<div align=right><font size=1 face="sans-serif">Subject</font></div>
<td><font size=1 face="sans-serif">[Ltru] Question on variants</font></table>
<br>
<table>
<tr valign=top>
<td>
<td></table>
<br></table>
<br>
<br>
<br><font size=2 face="sans-serif"><br>
All,</font><font size=3> <br>
</font><font size=2 face="sans-serif"><br>
I need to update some tagging in a language list here at Sony Pictures.
My current language requirement for Chinese languages is:</font><font size=3>
<br>
</font><font size=2 face="sans-serif"><br>
Audio Languages: Used for dubbing and original language content.</font><font size=3>
<br>
</font><font size=2 face="sans-serif"><br>
* Chinese (No other variant information known) = zh</font><font size=3>
</font><font size=2 face="sans-serif"><br>
* Chinese (Mandarin, PRC) = zh-cmn-CN</font><font size=3> </font><font size=2 face="sans-serif"><br>
* Chinese (Mandarin, Taiwanese variant) = zh-cmn-TW</font><font size=3>
</font><font size=2 face="sans-serif"><br>
* Chinese (Cantonese) = zh-yue</font><font size=3> </font><font size=2 face="sans-serif"><br>
* Chinese (Taiwanese) = zh-min-nan</font><font size=3> <br>
</font><font size=2 face="sans-serif"><br>
Text Languages: Used for localization of language other than the original
language as well as captions and subtitles. Subtitles may also occur in
an original version that features more than one language.</font><font size=3>
<br>
</font><font size=2 face="sans-serif"><br>
* Chinese (No other variant information known) = zh</font><font size=3>
</font><font size=2 face="sans-serif"><br>
* Chinese (Mandarin, Traditional) = zh-cmn-Hant</font><font size=3> </font><font size=2 face="sans-serif"><br>
* Chinese (Mandarin, Simplified) = zh-cmn-Hans</font><font size=3> </font><font size=2 face="sans-serif"><br>
* Chinese (Cantonese) = zh-yue</font><font size=3> </font><font size=2 face="sans-serif"><br>
* Chinese (Taiwanese) = zh-min-nan</font><font size=3> <br>
</font><font size=2 face="sans-serif"><br>
I'm not sure if we closed the discussion on whether &quot;zh-cmn&quot;
or &quot;cmn&quot; will be preferred in RFC 4646bis. Of these tags, which
are most likely to be deprecated in the new regime? It's unclear to me
how I should code Mandarin, Cantonese, and Taiwanese if I want the best
chance of being compatible with the preferred tagging to be determined
by this committee at a later date. I thought this business scenario might
help the discussion, if this issue is not resolved yet. I looked through
the archive and it doesn't look like this issue is closed. To me, the &quot;zh&quot;
in these tags (especially written language categories) seems helpful.</font><font size=3>
<br>
</font><font size=2 face="sans-serif"><br>
Regards,</font><font size=3> <br>
</font><font size=2 face="sans-serif"><br>
Karen Broome<br>
Metadata Systems Designer<br>
Sony Pictures Entertainment<br>
310.244.4384</font><font size=3> </font><tt><font size=2>_______________________________________________<br>
Ltru mailing list<br>
Ltru@ietf.org<br>
https://www1.ietf.org/mailman/listinfo/ltru<br>
</font></tt>
<br>
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From ltru-bounces@ietf.org Mon Aug 06 15:31:49 2007
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From: "Randy Presuhn" <randy_presuhn@mindspring.com>
To: "LTRU Working Group" <ltru@ietf.org>
References: <006401c7d7f6$4cad7030$6401a8c0@DGBP7M81>
Subject: Re: [Ltru] Apostrophes
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Hi -

> From: "Doug Ewell" <dewell@roadrunner.com>
> To: "LTRU Working Group" <ltru@ietf.org>
> Cc: "Michael Everson" <everson@evertype.com>
> Sent: Sunday, August 05, 2007 11:52 PM
> Subject: [Ltru] Apostrophes
...
> 1.  In RFC 4645bis, all apostrophes and apostrophe-like modifier letters 
> that appear either in the current Registry or in one of the source 
> standards be transformed to the plain ASCII apostrophe, U+0027.
>
> 2.  Existing pairs of Description fields that differ only in the type of 
> apostrophe (e.g. "Ethiopic (Ge'ez)") be reduced to a single field.
>
> 3.  Future registrations use only U+0027 in place of other 
> apostrophe-like characters.
...

As a co-chair, I'm concerned that (1) and (2) so would be exceding this
WG's proper role.  Such a decision belongs to the ietf-languages@iana.org
list and the subtag reviewer, rather than this WG, in my opinion.

As a technical contributor, though I understand the motivation for (3),
I think that hard-coding this kind of a policy detail is something we might
eventually regret.  The whole point of having a reviewer and discussion list
is that we know that specifying a purely mechanical process for handling all
aspects of a registration request is impractical.  We should spend time
spelling out policy where we think the odds are good that submitters, the
reviewer, or the discussion list would otherwise be likely to err.  I'm also
concerned that (3) is just the tip of the look-alike iceberg, and that before
too long we might find ourselves specifying a stringprep profile for registry
requests.  This really feels like over-engineering to me.

Randy



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From ltru-bounces@ietf.org Mon Aug 06 16:11:30 2007
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Randy Presuhn wrote:
>> 1.  In RFC 4645bis, all apostrophes and apostrophe-like modifier letters 
>> that appear either in the current Registry or in one of the source 
>> standards be transformed to the plain ASCII apostrophe, U+0027.
>>
>> 2.  Existing pairs of Description fields that differ only in the type of 
>> apostrophe (e.g. "Ethiopic (Ge'ez)") be reduced to a single field.
>>
>> 3.  Future registrations use only U+0027 in place of other 
>> apostrophe-like characters.
> ...
> 
> As a co-chair, I'm concerned that (1) and (2) so would be exceding this
> WG's proper role.  Such a decision belongs to the ietf-languages@iana.org
> list and the subtag reviewer, rather than this WG, in my opinion.

Wouldn't #1 and #2 be within scope, since it affects a work item for 
this WG? It might be a simple policy decision or a bit of editorial 
discretion (we've been satisfied with those previously). The 
registration process can always be used to alter or amend any resulting 
crud.

> 
> As a technical contributor, though I understand the motivation for (3),
> I think that hard-coding this kind of a policy detail is something we might
> eventually regret.  The whole point of having a reviewer and discussion list
> is that we know that specifying a purely mechanical process for handling all
> aspects of a registration request is impractical.  We should spend time
> spelling out policy where we think the odds are good that submitters, the
> reviewer, or the discussion list would otherwise be likely to err.  I'm also
> concerned that (3) is just the tip of the look-alike iceberg, and that before
> too long we might find ourselves specifying a stringprep profile for registry
> requests.  This really feels like over-engineering to me.

+1

Addison

-- 
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.


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From ltru-bounces@ietf.org Mon Aug 06 16:23:20 2007
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Karen_Broome@spe.sony.com wrote:
> 
> What should I do with films that have been categorized as Serbo-Croatian 
> in the past? 

Nothing? Presumably these were also associated with the defunct region 
'YU' (also deprecated, but legal).

> The language isn't suddenly different because the political 
> climate changed since the films were first made. The distinction between 
> Serbian and Croatian is not particularly significant in audio works, so we 
> may not find it useful (from a business perspective) to do the research to 
> make guesses as to whether any given film is more Serbian or Croatian. I 
> am not talking about textual forms of the language -- only audio uses.

Whether you change it for cultural, political, or otherwise-motivated 
reasons is up to you. The original tags remain (and have always 
remained) valid. Here's the record in the registry:

%%
Type: language
Subtag: sh
Description: Serbo-Croatian
Added: 2005-10-16
Deprecated: 2000-02-18
%%

> 
> If I wish to maintain classifications previously made against this 
> deprecated language that is now back in business in 639-3, would I extend 
> the deprecated 639-1 prefix and include the 639-3 code; use one of the 
> deprecated 639-2 codes; or just use the new 639-3 code alone? Which of 
> these options is most "wise"?

Actually, Serbo-Croatian has never been "out of business". It is 
deprecated, but not illegal.

The proposal is that Serbian, Croatian, Bosnian, and Serbo-Croatian are 
all on the "same level" (as primary language subtags). The fact that 
there is a macrolangauge mapping from the three former to the latter is 
not important in language *tagging*, although it might be useful in your 
applications (for the reasons you give). None of the proposals for 
extlang would alter this situation (for stability reasons).

Addison

-- 
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.


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Hi -

> From: "Addison Phillips" <addison@yahoo-inc.com>
> To: "Randy Presuhn" <randy_presuhn@mindspring.com>
> Cc: "LTRU Working Group" <ltru@ietf.org>
> Sent: Monday, August 06, 2007 1:10 PM
> Subject: Re: [Ltru] Apostrophes
>
> Randy Presuhn wrote:
> >> 1.  In RFC 4645bis, all apostrophes and apostrophe-like modifier letters 
> >> that appear either in the current Registry or in one of the source 
> >> standards be transformed to the plain ASCII apostrophe, U+0027.
> >>
> >> 2.  Existing pairs of Description fields that differ only in the type of 
> >> apostrophe (e.g. "Ethiopic (Ge'ez)") be reduced to a single field.
> >>
> >> 3.  Future registrations use only U+0027 in place of other 
> >> apostrophe-like characters.
> > ...
> > 
> > As a co-chair, I'm concerned that (1) and (2) so would be exceding this
> > WG's proper role.  Such a decision belongs to the ietf-languages@iana.org
> > list and the subtag reviewer, rather than this WG, in my opinion.
> 
> Wouldn't #1 and #2 be within scope, since it affects a work item for 
> this WG? It might be a simple policy decision or a bit of editorial 
> discretion (we've been satisfied with those previously). The 
> registration process can always be used to alter or amend any resulting 
> crud.
...

Here's how I look at it:  the WG's job is to define policy/process, 
structure and semantics.

The reviewer & list are responsible for content.

There's a bit of an intersection for bulk generation of entries derived
from other standards.  The question here is when do "automatic" transformations
of the data provided by other standards cross the line and become decisions
about content, that should properly be discussed by the language experts?

I can see how this particular case arguably falls into a grey area,
but since Doug has already done the work to identify the specific cases, my own
preference would be for those cases to be handled on the ietf-languages@iana.org
list as change requests, rather than for us here to try to anticipate the
outcome of the discussions in that forum.

Randy



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From ltru-bounces@ietf.org Mon Aug 06 16:38:04 2007
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So... I think we're saying the same thing, which is that Doug should: 
take the existing registry as an *exact* source; modify those things 
that *require* modification; add the new records (copying the source 
standards exactly); and leave any additional changes (such as making the 
apostrophes "nicer") up to ietf-langauges?

Addison

Randy Presuhn wrote:
> Hi -
> 
>> From: "Addison Phillips" <addison@yahoo-inc.com>
>> To: "Randy Presuhn" <randy_presuhn@mindspring.com>
>> Cc: "LTRU Working Group" <ltru@ietf.org>
>> Sent: Monday, August 06, 2007 1:10 PM
>> Subject: Re: [Ltru] Apostrophes
>>
>> Randy Presuhn wrote:
>>>> 1.  In RFC 4645bis, all apostrophes and apostrophe-like modifier letters 
>>>> that appear either in the current Registry or in one of the source 
>>>> standards be transformed to the plain ASCII apostrophe, U+0027.
>>>>
>>>> 2.  Existing pairs of Description fields that differ only in the type of 
>>>> apostrophe (e.g. "Ethiopic (Ge'ez)") be reduced to a single field.
>>>>
>>>> 3.  Future registrations use only U+0027 in place of other 
>>>> apostrophe-like characters.
>>> ...
>>>
>>> As a co-chair, I'm concerned that (1) and (2) so would be exceding this
>>> WG's proper role.  Such a decision belongs to the ietf-languages@iana.org
>>> list and the subtag reviewer, rather than this WG, in my opinion.
>> Wouldn't #1 and #2 be within scope, since it affects a work item for 
>> this WG? It might be a simple policy decision or a bit of editorial 
>> discretion (we've been satisfied with those previously). The 
>> registration process can always be used to alter or amend any resulting 
>> crud.
> ...
> 
> Here's how I look at it:  the WG's job is to define policy/process, 
> structure and semantics.
> 
> The reviewer & list are responsible for content.
> 
> There's a bit of an intersection for bulk generation of entries derived
> from other standards.  The question here is when do "automatic" transformations
> of the data provided by other standards cross the line and become decisions
> about content, that should properly be discussed by the language experts?
> 
> I can see how this particular case arguably falls into a grey area,
> but since Doug has already done the work to identify the specific cases, my own
> preference would be for those cases to be handled on the ietf-languages@iana.org
> list as change requests, rather than for us here to try to anticipate the
> outcome of the discussions in that forum.
> 
> Randy
> 
> 
> 
> _______________________________________________
> Ltru mailing list
> Ltru@ietf.org
> https://www1.ietf.org/mailman/listinfo/ltru

-- 
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.


_______________________________________________
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Addison writes:

> At that same time, I tend to think the the first 'Description' field in 
> a language subtag should be character-for-character equivalent to ISO 
> 639-3, regardless of whether we like it or not. The stated purpose is 
> cross-referencing and my browser's search function does 
> character-by-character identity. You can always have a second, edited, 
> version.


I agree with Doug's apostrophe proposal to the extent that it supports 
Addison's words above. If there is an incorrectly used apostrophe and 
someone would like to make issue of it, I would suggest making that change 
through a change request to the source ISO standard. Any changes that have 
been made within the registry to date, should likely change back to 
whatever is specified in the source standard.

Two cents,

Karen Broome

--=_alternative 0071441F8825732F_=
Content-Type: text/html; charset="US-ASCII"


<br><font size=2 face="sans-serif">Addison writes:</font>
<br><tt><font size=2><br>
&gt; At that same time, I tend to think the the first 'Description' field
in <br>
&gt; a language subtag should be character-for-character equivalent to
ISO <br>
&gt; 639-3, regardless of whether we like it or not. The stated purpose
is <br>
&gt; cross-referencing and my browser's search function does <br>
&gt; character-by-character identity. You can always have a second, edited,
<br>
&gt; version.<br>
</font></tt>
<br>
<br><tt><font size=2>I agree with Doug's apostrophe proposal to the extent
that it supports Addison's words above. If there is an incorrectly used
apostrophe and someone would like to make issue of it, I would suggest
making that change through a change request to the source ISO standard.
Any changes that have been made within the registry to date, should likely
change back to whatever is specified in the source standard.</font></tt>
<br>
<br><tt><font size=2>Two cents,</font></tt>
<br>
<br><tt><font size=2>Karen Broome<br>
</font></tt>
--=_alternative 0071441F8825732F_=--




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From ltru-bounces@ietf.org Mon Aug 06 16:41:57 2007
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PS> Please note that I personally approve of fixing the various 
apostrophes. It's just that it does seem unnecessary to modify 4646bis 
to do it.

Addison

Addison Phillips wrote:
> So... I think we're saying the same thing, which is that Doug should: 
> take the existing registry as an *exact* source; modify those things 
> that *require* modification; add the new records (copying the source 
> standards exactly); and leave any additional changes (such as making the 
> apostrophes "nicer") up to ietf-langauges?
> 
> Addison
> 
> Randy Presuhn wrote:
>> Hi -
>>
>>> From: "Addison Phillips" <addison@yahoo-inc.com>
>>> To: "Randy Presuhn" <randy_presuhn@mindspring.com>
>>> Cc: "LTRU Working Group" <ltru@ietf.org>
>>> Sent: Monday, August 06, 2007 1:10 PM
>>> Subject: Re: [Ltru] Apostrophes
>>>
>>> Randy Presuhn wrote:
>>>>> 1.  In RFC 4645bis, all apostrophes and apostrophe-like modifier 
>>>>> letters that appear either in the current Registry or in one of the 
>>>>> source standards be transformed to the plain ASCII apostrophe, U+0027.
>>>>>
>>>>> 2.  Existing pairs of Description fields that differ only in the 
>>>>> type of apostrophe (e.g. "Ethiopic (Ge'ez)") be reduced to a single 
>>>>> field.
>>>>>
>>>>> 3.  Future registrations use only U+0027 in place of other 
>>>>> apostrophe-like characters.
>>>> ...
>>>>
>>>> As a co-chair, I'm concerned that (1) and (2) so would be exceding this
>>>> WG's proper role.  Such a decision belongs to the 
>>>> ietf-languages@iana.org
>>>> list and the subtag reviewer, rather than this WG, in my opinion.
>>> Wouldn't #1 and #2 be within scope, since it affects a work item for 
>>> this WG? It might be a simple policy decision or a bit of editorial 
>>> discretion (we've been satisfied with those previously). The 
>>> registration process can always be used to alter or amend any 
>>> resulting crud.
>> ...
>>
>> Here's how I look at it:  the WG's job is to define policy/process, 
>> structure and semantics.
>>
>> The reviewer & list are responsible for content.
>>
>> There's a bit of an intersection for bulk generation of entries derived
>> from other standards.  The question here is when do "automatic" 
>> transformations
>> of the data provided by other standards cross the line and become 
>> decisions
>> about content, that should properly be discussed by the language experts?
>>
>> I can see how this particular case arguably falls into a grey area,
>> but since Doug has already done the work to identify the specific 
>> cases, my own
>> preference would be for those cases to be handled on the 
>> ietf-languages@iana.org
>> list as change requests, rather than for us here to try to anticipate the
>> outcome of the discussions in that forum.
>>
>> Randy
>>
>>
>>
>> _______________________________________________
>> Ltru mailing list
>> Ltru@ietf.org
>> https://www1.ietf.org/mailman/listinfo/ltru
> 

-- 
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.


_______________________________________________
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Subject: Re: [Ltru] Apostrophes
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Hi -

> From: "Addison Phillips" <addison@yahoo-inc.com>
> To: "Randy Presuhn" <randy_presuhn@mindspring.com>
> Cc: "LTRU Working Group" <ltru@ietf.org>
> Sent: Monday, August 06, 2007 1:36 PM
> Subject: Re: [Ltru] Apostrophes
>
> So... I think we're saying the same thing, which is that Doug should: 
> take the existing registry as an *exact* source; modify those things 
> that *require* modification; add the new records (copying the source 
> standards exactly); and leave any additional changes (such as making the 
> apostrophes "nicer") up to ietf-langauges?
...

That would be my preference, both as a co-chair and as a technical
contributor.

Randy



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Hi -

> From: "Addison Phillips" <addison@yahoo-inc.com>
> To: "Addison Phillips" <addison@yahoo-inc.com>
> Cc: "Randy Presuhn" <randy_presuhn@mindspring.com>; "LTRU Working Group" <ltru@ietf.org>
> Sent: Monday, August 06, 2007 1:40 PM
> Subject: Re: [Ltru] Apostrophes
>

> PS> Please note that I personally approve of fixing the various 
> apostrophes. It's just that it does seem unnecessary to modify 4646bis 
> to do it.
...

Ditto.

Randy



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From ltru-bounces@ietf.org Mon Aug 06 23:06:07 2007
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<Karen underscore Broome at spe dot sony dot com> wrote:

> What should I do with films that have been categorized as 
> Serbo-Croatian in the past? The language isn't suddenly different 
> because the political climate changed since the films were first made.

As Addison said, you don't actually have to change anything; that's why 
we made sure that "deprecated" subtags were still valid, and not removed 
from the Registry.

> If I wish to maintain classifications previously made against this 
> deprecated language that is now back in business in 639-3, would I 
> extend the deprecated 639-1 prefix and include the 639-3 code;

You don't mean "sh-sr" or "sr-hr", right?  That's not well-formed.

> use one of the deprecated 639-2 codes;

Which are those?

> or just use the new 639-3 code alone? Which of these options is most 
> "wise"?

You can leave everything alone, or you can (more or less arbitrarily) 
choose "sr" or "hr", both of which are valid 639-1 code elements.

> I'm only considering this question in terms of spoken content and I 
> realize we don't have the answer for this yet. But I figure answers 
> start with questions (despite my studio's affiliation with 
> "Jeopardy").

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
("Jeopardy!" wannabe)
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
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Subject: Re: [Ltru] Apostrophes
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Addison Phillips <addison at yahoo dash inc dot com> wrote:

> At that same time, I tend to think the the first 'Description' field 
> in a language subtag should be character-for-character equivalent to 
> ISO 639-3, regardless of whether we like it or not. The stated purpose 
> is cross-referencing and my browser's search function does 
> character-by-character identity.

If the intent is for the first Description field to be identical to the 
639-3 reference name -- and this is just what I have been doing in RFC 
4645bis, *except* that I proposed to ASCII-slam the apostrophes -- then 
I think the text should emphasize this a bit more.  There is lots of 
text about how Description fields are not normative.

> You can always have a second, edited, version.

No, please, no.  Let's not proliferate this kind of thing:

    Description: Ethiopic (Ge&#x2BB;ez)
    Description: Ethiopic (Ge'ez)

Frankly, I would much rather see just the "official" line with U+02BB 
than both lines.  It's back to what I said about "transcribing" accented 
Latin letters into ASCII: it proves nothing except that we created a 
character-encoding problem and had to hack our way out of it.  With 
UTF-8 this will be worse than it is today, because the two lines will 
look virtually identical:

    Description: Ethiopic (Geʻez)
    Description: Ethiopic (Ge'ez)

Randy Presuhn <randy underscore presuhn at mindspring dot com> wrote:

> As a co-chair, I'm concerned that (1) and (2) so would be exceding 
> this WG's proper role.  Such a decision belongs to the 
> ietf-languages@iana.org list and the subtag reviewer, rather than this 
> WG, in my opinion.

Addison answered this adequately: (1) and (2) are questions about what 
we should do in RFC 4645bis.

> As a technical contributor, though I understand the motivation for 
> (3), I think that hard-coding this kind of a policy detail is 
> something we might eventually regret.  The whole point of having a 
> reviewer and discussion list is that we know that specifying a purely 
> mechanical process for handling all aspects of a registration request 
> is impractical.  We should spend time spelling out policy where we 
> think the odds are good that submitters, the reviewer, or the 
> discussion list would otherwise be likely to err.

One of the main reasons I bring this up here is that ietf-languages has 
been unable to establish a consistent pattern for apostrophes and 
meta-apostrophes, despite much discussion.

> I'm also concerned that (3) is just the tip of the look-alike iceberg, 
> and that before too long we might find ourselves specifying a 
> stringprep profile for registry requests.  This really feels like 
> over-engineering to me.

I have no desire to extend this beyond apostrophe-like characters.  Of 
course, others might pick up this particular ball and run with it.

Later:

> I can see how this particular case arguably falls into a grey area, 
> but since Doug has already done the work to identify the specific 
> cases, my own preference would be for those cases to be handled on the 
> ietf-languages at iana.org list as change requests, rather than for us 
> here to try to anticipate the outcome of the discussions in that 
> forum.

I can promise that if this is brought up on the ietf-languages list, the 
net result will be to convert the U+0027 apostrophes to more "correct" 
characters, to de-regularize them, which is exactly the opposite of what 
I had in mind.  I've already gotten one private reply to this effect.

Addison replied:

> So... I think we're saying the same thing, which is that Doug should: 
> take the existing registry as an *exact* source; modify those things 
> that *require* modification; add the new records (copying the source 
> standards exactly); and leave any additional changes (such as making 
> the apostrophes "nicer") up to ietf-langauges?

and Karen and Randy agreed.

Oh well, I tried.  Thanks to John for his summary "+1", but it looks 
like this isn't going to happen.

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages



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From ltru-bounces@ietf.org Tue Aug 07 01:54:26 2007
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From: "Doug Ewell" <dewell@roadrunner.com>
To: "LTRU Working Group" <ltru@ietf.org>
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I've contacted Michelle Cotton of IANA about how to manage updates to a 
UTF-8 Language Subtag Registry, and hope to hear from IANA in the next 
week or so.

I have a question about "reloading" the Registry in RFC 4645bis, if we 
are planning to switch to UTF-8.  An Internet-Draft must be in pure 
ASCII, so I'm told.  I assume that if we devise a process to manage 
updates that involves us sending hex NCRs (or some other ASCII 
representation) to IANA, and IANA converting the text to UTF-8 before 
inserting it into the Registry, then it would make sense to use the same 
process when converting the RFC 4645bis contents.  The problem is this:

1.  RFC 4645bis allows physical lines in the Registry to be up to 72 
UTF-8 bytes long.

2.  Whatever ASCII representation I use in the I-D will take more bytes 
than UTF-8.

3.  Lines in I-Ds are limited to 72 characters (xml2rfc will see to 
that).

How can I convey the correct line-breaking points to IANA so that the 
lines will come out right in the reloaded Registry?  This would be a 
particular problem for the Comments field for variant 'baku1926', which 
contains a relatively large number of non-ASCII characters.

One possibility might be to mark the line breaks with a backslash, but I 
don't want to introduce more meta-syntax than necessary.  Suggestions 
are welcome.

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages



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From: "Randy Presuhn" <randy_presuhn@mindspring.com>
To: "LTRU Working Group" <ltru@ietf.org>
References: <003701c7d8b3$5b1273b0$6401a8c0@DGBP7M81>
Subject: Re: [Ltru] Line lengths in RFC 4645bis
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Hi -

As a technical contributor...

> From: "Doug Ewell" <dewell@roadrunner.com>
> To: "LTRU Working Group" <ltru@ietf.org>
> Sent: Monday, August 06, 2007 10:25 PM
> Subject: [Ltru] Line lengths in RFC 4645bis
...
> 1.  RFC 4645bis allows physical lines in the Registry to be up to 72 
> UTF-8 bytes long.
> 
> 2.  Whatever ASCII representation I use in the I-D will take more bytes 
> than UTF-8.
> 
> 3.  Lines in I-Ds are limited to 72 characters (xml2rfc will see to 
> that).

I don't see the problem.  Nothing says that we have to make our lines
that long.  They can be shorter.

> How can I convey the correct line-breaking points to IANA so that the 
> lines will come out right in the reloaded Registry?  This would be a 
> particular problem for the Comments field for variant 'baku1926', which 
> contains a relatively large number of non-ASCII characters.

So it might have a few more lines than might theoretically be possible.
This doesn't seem to me to be a real problem.
 
> One possibility might be to mark the line breaks with a backslash, but I 
> don't want to introduce more meta-syntax than necessary.  Suggestions 
> are welcome.

Agreed.  My suggestion is to not worry about it.

Randy



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Randy Presuhn wrote:
>>
>> 3.  Lines in I-Ds are limited to 72 characters (xml2rfc will see to 
>> that).
> 
> I don't see the problem.  Nothing says that we have to make our lines
> that long.  They can be shorter.

Yes, although it might look funny in the finished product.

> 
>> This would be a 
>> particular problem for the Comments field for variant 'baku1926', which 
>> contains a relatively large number of non-ASCII characters.
> 
> So it might have a few more lines than might theoretically be possible.
> This doesn't seem to me to be a real problem.

There is no limit to the number of lines that a field may take.

>  
>> One possibility might be to mark the line breaks with a backslash, but I 
>> don't want to introduce more meta-syntax than necessary.  Suggestions 
>> are welcome.
> 
> Agreed.  My suggestion is to not worry about it.
> 

We might also give IANA a record-jar parser (I have one handy) for that 
task. A proper record-jar parser would read the I-D version creating 
logical records and then reserialize as UTF-8. The fields in the logical 
records consist of single (unlimited length) lines. The wrapping/folding 
process is part of the serialization scheme.

This doesn't affect the I-D (i.e. Randy's "don't worry about it"), but 
if we give them a tool to help with the job, it should be tested on the 
file ahead of time.

Addison

-- 
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.


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To: "Doug Ewell" <dewell@roadrunner.com>
Subject: Re: [Ltru] Re: Serbo-Croatian Deprecations and Variants
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Doug,

I understand that deprecated tags are still valid. I wouldn't use hr or sr 
because that's a more narrow semantic than Serbo-Croatian. I guess my 
question is this: Is it "wiser" to use the deprecated ISO 639-1 tag, or 
the ISO 639-3 tag, which is not deprecated and is a macrolanguage. Assume 
a clean slate and that any tagging applied to date can be changed with a 
SQL update, but individual language classifications cannot be reassigned.

Should the draft offer guidance on this? I don't know which tag is 
preferred -- sh or hbs. (I initially thought that perhaps the sh tag might 
be combined with the hbs tag, but now I realize that's silly -- I was 
thinking of the Chinese variant examples from the day before.)  I'm not 
really using it in a macrolanguage sense, but I'd rather not use any 
deprecated tagging, whether it's valid or not. Note: This language tag 
will not be attached to a region.

Regards,

Karen Broome
Metadata Systems Designer
Sony Pictures Entertainment
310.244.4384



"Doug Ewell" <dewell@roadrunner.com> 
08/06/2007 08:05 PM

To
"LTRU Working Group" <ltru@ietf.org>
cc
Karen_Broome@spe.sony.com
Subject
[Ltru] Re: Serbo-Croatian Deprecations and Variants






<Karen underscore Broome at spe dot sony dot com> wrote:

> What should I do with films that have been categorized as 
> Serbo-Croatian in the past? The language isn't suddenly different 
> because the political climate changed since the films were first made.

As Addison said, you don't actually have to change anything; that's why 
we made sure that "deprecated" subtags were still valid, and not removed 
from the Registry.

> If I wish to maintain classifications previously made against this 
> deprecated language that is now back in business in 639-3, would I 
> extend the deprecated 639-1 prefix and include the 639-3 code;

You don't mean "sh-sr" or "sr-hr", right?  That's not well-formed.

> use one of the deprecated 639-2 codes;

Which are those?

> or just use the new 639-3 code alone? Which of these options is most 
> "wise"?

You can leave everything alone, or you can (more or less arbitrarily) 
choose "sr" or "hr", both of which are valid 639-1 code elements.

> I'm only considering this question in terms of spoken content and I 
> realize we don't have the answer for this yet. But I figure answers 
> start with questions (despite my studio's affiliation with 
> "Jeopardy").

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
("Jeopardy!" wannabe)
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages



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<br><font size=2 face="sans-serif">Doug,</font>
<br>
<br><font size=2 face="sans-serif">I understand that deprecated tags are
still valid. I wouldn't use hr or sr because that's a more narrow semantic
than Serbo-Croatian. I guess my question is this: Is it &quot;wiser&quot;
to use the deprecated ISO 639-1 tag, or the ISO 639-3 tag, which is not
deprecated and is a macrolanguage. Assume a clean slate and that any tagging
applied to date can be changed with a SQL update, but individual language
classifications cannot be reassigned.</font>
<br>
<br><font size=2 face="sans-serif">Should the draft offer guidance on this?
I don't know which tag is preferred -- sh or hbs. (I initially thought
that perhaps the sh tag might be combined with the hbs tag, but now I realize
that's silly -- I was thinking of the Chinese variant examples from the
day before.) &nbsp;I'm not really using it in a macrolanguage sense, but
I'd rather not use any deprecated tagging, whether it's valid or not. Note:
This language tag will not be attached to a region.</font>
<br>
<br><font size=2 face="sans-serif">Regards,</font>
<br>
<br><font size=2 face="sans-serif">Karen Broome<br>
Metadata Systems Designer<br>
Sony Pictures Entertainment<br>
310.244.4384</font>
<br>
<br>
<br>
<table width=100%>
<tr valign=top>
<td width=40%><font size=1 face="sans-serif"><b>&quot;Doug Ewell&quot;
&lt;dewell@roadrunner.com&gt;</b> </font>
<p><font size=1 face="sans-serif">08/06/2007 08:05 PM</font>
<td width=59%>
<table width=100%>
<tr valign=top>
<td>
<div align=right><font size=1 face="sans-serif">To</font></div>
<td><font size=1 face="sans-serif">&quot;LTRU Working Group&quot; &lt;ltru@ietf.org&gt;</font>
<tr valign=top>
<td>
<div align=right><font size=1 face="sans-serif">cc</font></div>
<td><font size=1 face="sans-serif">Karen_Broome@spe.sony.com</font>
<tr valign=top>
<td>
<div align=right><font size=1 face="sans-serif">Subject</font></div>
<td><font size=1 face="sans-serif">[Ltru] Re: Serbo-Croatian Deprecations
and Variants</font></table>
<br>
<table>
<tr valign=top>
<td>
<td></table>
<br></table>
<br>
<br>
<br><tt><font size=2>&lt;Karen underscore Broome at spe dot sony dot com&gt;
wrote:<br>
<br>
&gt; What should I do with films that have been categorized as <br>
&gt; Serbo-Croatian in the past? The language isn't suddenly different
<br>
&gt; because the political climate changed since the films were first made.<br>
<br>
As Addison said, you don't actually have to change anything; that's why
<br>
we made sure that &quot;deprecated&quot; subtags were still valid, and
not removed <br>
from the Registry.<br>
<br>
&gt; If I wish to maintain classifications previously made against this
<br>
&gt; deprecated language that is now back in business in 639-3, would I
<br>
&gt; extend the deprecated 639-1 prefix and include the 639-3 code;<br>
<br>
You don't mean &quot;sh-sr&quot; or &quot;sr-hr&quot;, right? &nbsp;That's
not well-formed.<br>
<br>
&gt; use one of the deprecated 639-2 codes;<br>
<br>
Which are those?<br>
<br>
&gt; or just use the new 639-3 code alone? Which of these options is most
<br>
&gt; &quot;wise&quot;?<br>
<br>
You can leave everything alone, or you can (more or less arbitrarily) <br>
choose &quot;sr&quot; or &quot;hr&quot;, both of which are valid 639-1
code elements.<br>
<br>
&gt; I'm only considering this question in terms of spoken content and
I <br>
&gt; realize we don't have the answer for this yet. But I figure answers
<br>
&gt; start with questions (despite my studio's affiliation with <br>
&gt; &quot;Jeopardy&quot;).<br>
<br>
--<br>
Doug Ewell &nbsp;* &nbsp;Fullerton, California, USA &nbsp;* &nbsp;RFC 4645
&nbsp;* &nbsp;UTN #14<br>
(&quot;Jeopardy!&quot; wannabe)<br>
http://users.adelphia.net/~dewell/<br>
http://www1.ietf.org/html.charters/ltru-charter.html<br>
http://www.alvestrand.no/mailman/listinfo/ietf-languages<br>
<br>
<br>
<br>
_______________________________________________<br>
Ltru mailing list<br>
Ltru@ietf.org<br>
https://www1.ietf.org/mailman/listinfo/ltru<br>
<br>
</font></tt>
<br>
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Karen_Broome@spe.sony.com scripsit:
> Doug,
> 
> I understand that deprecated tags are still valid. I wouldn't use hr or sr 
> because that's a more narrow semantic than Serbo-Croatian. I guess my 
> question is this: Is it "wiser" to use the deprecated ISO 639-1 tag, or 
> the ISO 639-3 tag, which is not deprecated and is a macrolanguage.  

No 639-1 or -2 tag will ever be replaced by a 639-3 tag.

-- 
Here lies the Christian,                        John Cowan
        judge, and poet Peter,                  http://www.ccil.org/~cowan
Who broke the laws of God                       cowan@ccil.org
        and man and metre.


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From: "Doug Ewell" <dewell@roadrunner.com>
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Subject: Re: [Ltru] Re: Serbo-Croatian Deprecations and Variants
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<Karen underscore Broome at spe dot sony dot com> wrote:

> I understand that deprecated tags are still valid. I wouldn't use hr 
> or sr because that's a more narrow semantic than Serbo-Croatian. I 
> guess my question is this: Is it "wiser" to use the deprecated ISO 
> 639-1 tag, or the ISO 639-3 tag, which is not deprecated and is a 
> macrolanguage. Assume a clean slate and that any tagging applied to 
> date can be changed with a SQL update, but individual language 
> classifications cannot be reassigned.

You can't use 'hbs' in any case, because it is defined in ISO 639-3 as 
equivalent to 'sh' (see 
http://www.sil.org/iso639-3/documentation.asp?id=hbs).  Whenever an 
alpha-2 and an alpha-3 code element exist for the same language, only 
the alpha-2 can be used in a language tag.  That has been the rule since 
RFC 3066 first allowed alpha-3 subtags, and in the 4646 era we implement 
it by not putting the alpha-3 in the Registry.

What makes Serbo-Croatian unusual in this regard is that there was a 
code element for it in ISO 639-1 (sh) and there is now one in 639-3 
(hbs), but apparently never in ISO 639-2.  Furthermore, and strangely, 
the deletion of 'sh' from ISO 639-1 is no longer listed on the ISO 
639-2/RA Change Notice page, even though we know it was once there 
because we gave 'sh' a Deprecated date of 2000-02-18 in the Registry 
(the same day Bosnian and many others were added).

The resurrection of Serbo-Croatian as an ISO 639-3 macrolanguage poses 
an interesting challenge, because deprecation is supposed to be forever 
in the Registry.  (Section 3.4, item 1: "Values in the fields 'Type', 
'Subtag', 'Tag', 'Added', 'Deprecated' and 'Preferred-Value' MUST NOT be 
changed and are guaranteed to be stable over time.")  My assumption is 
that 'sh' has to remain deprecated, and 'hbs' has to remain on the 
outside looking in.

Back to your question:  If you know the content is Serbian, use 'sr'; if 
Croatian, use 'hr'; if Bosnian, use 'bs'.  If all you know is that it's 
some type of Serbo-Croatian, and you don't feel comfortable picking one 
of the other three arbitrarily, your best bet might be to use 'sh' even 
though Section 3.1.5 says you SHOULD NOT do so, and even though it feels 
wrong.

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages



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Subject: Re: [Ltru] Re: Serbo-Croatian Deprecations and Variants
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Doug Ewell wrote:
> 
> The resurrection of Serbo-Croatian as an ISO 639-3 macrolanguage poses 
> an interesting challenge, because deprecation is supposed to be forever 
> in the Registry.  (Section 3.4, item 1: "Values in the fields 'Type', 
> 'Subtag', 'Tag', 'Added', 'Deprecated' and 'Preferred-Value' MUST NOT be 
> changed and are guaranteed to be stable over time.")  My assumption is 
> that 'sh' has to remain deprecated, and 'hbs' has to remain on the 
> outside looking in.

Well... yeah. That's what stability really means.

> 
> Back to your question:  If you know the content is Serbian, use 'sr'; if 
> Croatian, use 'hr'; if Bosnian, use 'bs'.  If all you know is that it's 
> some type of Serbo-Croatian, and you don't feel comfortable picking one 
> of the other three arbitrarily, your best bet might be to use 'sh' even 
> though Section 3.1.5 says you SHOULD NOT do so, and even though it feels 
> wrong.
> 

SHOULD NOT is not the same as MUST NOT. You should not use 'sh' unless 
you have a (pretty good) reason to do so. The fact that you have (audio) 
data that cannot otherwise be distinguished or is already labeled as 
'sh' seems like a "good reason".

Addison

-- 
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.


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Subject: Re: [Ltru] Re: Serbo-Croatian Deprecations and Variants
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OK, "sh" it is.

Just confirming that the deprecated tag is preferred.  (Seems a little 
counterintuitive?)

Regards,

Karen 




Addison Phillips <addison@yahoo-inc.com> 
08/08/2007 01:03 AM

To
Doug Ewell <dewell@roadrunner.com>
cc
Karen_Broome@spe.sony.com, LTRU Working Group <ltru@ietf.org>
Subject
Re: [Ltru] Re: Serbo-Croatian Deprecations and Variants






Doug Ewell wrote:
> 
> The resurrection of Serbo-Croatian as an ISO 639-3 macrolanguage poses 
> an interesting challenge, because deprecation is supposed to be forever 
> in the Registry.  (Section 3.4, item 1: "Values in the fields 'Type', 
> 'Subtag', 'Tag', 'Added', 'Deprecated' and 'Preferred-Value' MUST NOT be 

> changed and are guaranteed to be stable over time.")  My assumption is 
> that 'sh' has to remain deprecated, and 'hbs' has to remain on the 
> outside looking in.

Well... yeah. That's what stability really means.

> 
> Back to your question:  If you know the content is Serbian, use 'sr'; if 

> Croatian, use 'hr'; if Bosnian, use 'bs'.  If all you know is that it's 
> some type of Serbo-Croatian, and you don't feel comfortable picking one 
> of the other three arbitrarily, your best bet might be to use 'sh' even 
> though Section 3.1.5 says you SHOULD NOT do so, and even though it feels 

> wrong.
> 

SHOULD NOT is not the same as MUST NOT. You should not use 'sh' unless 
you have a (pretty good) reason to do so. The fact that you have (audio) 
data that cannot otherwise be distinguished or is already labeled as 
'sh' seems like a "good reason".

Addison

-- 
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.


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<br><font size=2 face="sans-serif">OK, &quot;sh&quot; it is.</font>
<br>
<br><font size=2 face="sans-serif">Just confirming that the deprecated
tag is preferred. &nbsp;(Seems a little counterintuitive?)</font>
<br>
<br><font size=2 face="sans-serif">Regards,</font>
<br>
<br><font size=2 face="sans-serif">Karen </font>
<br>
<br>
<br>
<br>
<table width=100%>
<tr valign=top>
<td width=40%><font size=1 face="sans-serif"><b>Addison Phillips &lt;addison@yahoo-inc.com&gt;</b>
</font>
<p><font size=1 face="sans-serif">08/08/2007 01:03 AM</font>
<td width=59%>
<table width=100%>
<tr valign=top>
<td>
<div align=right><font size=1 face="sans-serif">To</font></div>
<td><font size=1 face="sans-serif">Doug Ewell &lt;dewell@roadrunner.com&gt;</font>
<tr valign=top>
<td>
<div align=right><font size=1 face="sans-serif">cc</font></div>
<td><font size=1 face="sans-serif">Karen_Broome@spe.sony.com, LTRU Working
Group &lt;ltru@ietf.org&gt;</font>
<tr valign=top>
<td>
<div align=right><font size=1 face="sans-serif">Subject</font></div>
<td><font size=1 face="sans-serif">Re: [Ltru] Re: Serbo-Croatian Deprecations
and Variants</font></table>
<br>
<table>
<tr valign=top>
<td>
<td></table>
<br></table>
<br>
<br>
<br><tt><font size=2>Doug Ewell wrote:<br>
&gt; <br>
&gt; The resurrection of Serbo-Croatian as an ISO 639-3 macrolanguage poses
<br>
&gt; an interesting challenge, because deprecation is supposed to be forever
<br>
&gt; in the Registry. &nbsp;(Section 3.4, item 1: &quot;Values in the fields
'Type', <br>
&gt; 'Subtag', 'Tag', 'Added', 'Deprecated' and 'Preferred-Value' MUST
NOT be <br>
&gt; changed and are guaranteed to be stable over time.&quot;) &nbsp;My
assumption is <br>
&gt; that 'sh' has to remain deprecated, and 'hbs' has to remain on the
<br>
&gt; outside looking in.<br>
<br>
Well... yeah. That's what stability really means.<br>
<br>
&gt; <br>
&gt; Back to your question: &nbsp;If you know the content is Serbian, use
'sr'; if <br>
&gt; Croatian, use 'hr'; if Bosnian, use 'bs'. &nbsp;If all you know is
that it's <br>
&gt; some type of Serbo-Croatian, and you don't feel comfortable picking
one <br>
&gt; of the other three arbitrarily, your best bet might be to use 'sh'
even <br>
&gt; though Section 3.1.5 says you SHOULD NOT do so, and even though it
feels <br>
&gt; wrong.<br>
&gt; <br>
<br>
SHOULD NOT is not the same as MUST NOT. You should not use 'sh' unless
<br>
you have a (pretty good) reason to do so. The fact that you have (audio)
<br>
data that cannot otherwise be distinguished or is already labeled as <br>
'sh' seems like a &quot;good reason&quot;.<br>
<br>
Addison<br>
<br>
-- <br>
Addison Phillips<br>
Globalization Architect -- Yahoo! Inc.<br>
Chair -- W3C Internationalization Core WG<br>
<br>
Internationalization is an architecture.<br>
It is not a feature.<br>
<br>
<br>
_______________________________________________<br>
Ltru mailing list<br>
Ltru@ietf.org<br>
https://www1.ietf.org/mailman/listinfo/ltru<br>
<br>
</font></tt>
<br>
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From: "Doug Ewell" <dewell@roadrunner.com>
To: "LTRU Working Group" <ltru@ietf.org>
References: <OF48DD596E.FC8C34B2-ON88257331.00784893-88257331.0078F900@spe.sony.com>
Subject: Re: [Ltru] Re: Serbo-Croatian Deprecations and Variants
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<Karen underscore Broome at spe dot sony dot com> wrote:

> Just confirming that the deprecated tag is preferred.  (Seems a little 
> counterintuitive?)

It won't be the last time.  The ISO 639-3 folks have made it known that 
A might be withdrawn and replaced by B and C, or vice versa, on an 
annual-review basis as supported by linguistic research.  We might have 
a lot more cases like Serbo-Croatian in the future.

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages



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From ltru-bounces@ietf.org Thu Aug 09 02:59:41 2007
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From: "Doug Ewell" <dewell@roadrunner.com>
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Subject: [Ltru] Re: Line lengths in RFC 4645bis
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Randy Presuhn <randy underscore presuhn at mindspring dot com> wrote:

>> How can I convey the correct line-breaking points to IANA so that the 
>> lines will come out right in the reloaded Registry?  This would be a 
>> particular problem for the Comments field for variant 'baku1926', 
>> which contains a relatively large number of non-ASCII characters.
>
> So it might have a few more lines than might theoretically be 
> possible.  This doesn't seem to me to be a real problem.

OK, I was just trying to
make sure the lines didn't
come out looking like this,
which might look a bit
ridiculous, but you're
right that it's not a
technical problem.  I'll
stop worrying about it.

Addison Phillips <addison at yahoo dash inc dot com> replied:

> We might also give IANA a record-jar parser (I have one handy) for 
> that task. A proper record-jar parser would read the I-D version 
> creating logical records and then reserialize as UTF-8. The fields in 
> the logical records consist of single (unlimited length) lines. The 
> wrapping/folding process is part of the serialization scheme.

I really like that idea.  Can you provide them (and me) with that tool? 
I'll send you the necessary IANA contacts.

> This doesn't affect the I-D (i.e. Randy's "don't worry about it"), but 
> if we give them a tool to help with the job, it should be tested on 
> the file ahead of time.

Absolutely.

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages



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From ltru-bounces@ietf.org Thu Aug 09 14:51:28 2007
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From: Peter Constable <petercon@microsoft.com>
To: LTRU Working Group <ltru@ietf.org>
Date: Thu, 9 Aug 2007 11:51:12 -0700
Subject: RE: [Ltru] Re: Serbo-Croatian Deprecations and Variants
Thread-Topic: [Ltru] Re: Serbo-Croatian Deprecations and Variants
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Clarification on "withdrawn": nothing that gets coded will later be un-code=
d: if language Foo is assign an ID "foo", then Foo will always be coded as =
"foo". But "foo" can be retired/deprecated.

Peter

-----Original Message-----
From: Doug Ewell [mailto:dewell@roadrunner.com]
Sent: Wednesday, August 08, 2007 11:45 PM
To: LTRU Working Group
Cc: Karen_Broome@spe.sony.com
Subject: Re: [Ltru] Re: Serbo-Croatian Deprecations and Variants

<Karen underscore Broome at spe dot sony dot com> wrote:

> Just confirming that the deprecated tag is preferred.  (Seems a little
> counterintuitive?)

It won't be the last time.  The ISO 639-3 folks have made it known that
A might be withdrawn and replaced by B and C, or vice versa, on an
annual-review basis as supported by linguistic research.  We might have
a lot more cases like Serbo-Croatian in the future.

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages



_______________________________________________
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From ltru-bounces@ietf.org Thu Aug 09 16:13:52 2007
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Subject: Re: [Ltru] Re: Serbo-Croatian Deprecations and Variants
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Does "retired" mean that the code would be formally withdrawn? Assuming 
it means this, does that mean that the code would never be reused for 
some other language?

Addison

Peter Constable wrote:
> Clarification on "withdrawn": nothing that gets coded will later be un-coded: if language Foo is assign an ID "foo", then Foo will always be coded as "foo". But "foo" can be retired/deprecated.
> 
> Peter
> 
> -----Original Message-----
> From: Doug Ewell [mailto:dewell@roadrunner.com]
> Sent: Wednesday, August 08, 2007 11:45 PM
> To: LTRU Working Group
> Cc: Karen_Broome@spe.sony.com
> Subject: Re: [Ltru] Re: Serbo-Croatian Deprecations and Variants
> 
> <Karen underscore Broome at spe dot sony dot com> wrote:
> 
>> Just confirming that the deprecated tag is preferred.  (Seems a little
>> counterintuitive?)
> 
> It won't be the last time.  The ISO 639-3 folks have made it known that
> A might be withdrawn and replaced by B and C, or vice versa, on an
> annual-review basis as supported by linguistic research.  We might have
> a lot more cases like Serbo-Croatian in the future.
> 
> --
> Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
> http://users.adelphia.net/~dewell/
> http://www1.ietf.org/html.charters/ltru-charter.html
> http://www.alvestrand.no/mailman/listinfo/ietf-languages
> 
> 
> 
> _______________________________________________
> Ltru mailing list
> Ltru@ietf.org
> https://www1.ietf.org/mailman/listinfo/ltru
> 
> 
> _______________________________________________
> Ltru mailing list
> Ltru@ietf.org
> https://www1.ietf.org/mailman/listinfo/ltru

-- 
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.


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From ltru-bounces@ietf.org Fri Aug 10 02:19:30 2007
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From: Peter Constable <petercon@microsoft.com>
To: LTRU Working Group <ltru@ietf.org>
Date: Thu, 9 Aug 2007 23:19:14 -0700
Subject: RE: [Ltru] Re: Serbo-Croatian Deprecations and Variants
Thread-Topic: [Ltru] Re: Serbo-Croatian Deprecations and Variants
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I thought my statement made that clear: once encoded, always encoded. "Reti=
red" means it's no longer recommended -- basically the same as deprecated. =
But I think I've made clear for a long time: ISO 639-3 will be stable in th=
e sense that an identifier will always retain its semantic and will never g=
et re-defined.


Peter

-----Original Message-----
From: Addison Phillips [mailto:addison@yahoo-inc.com]
Sent: Thursday, August 09, 2007 1:14 PM
To: Peter Constable
Cc: LTRU Working Group
Subject: Re: [Ltru] Re: Serbo-Croatian Deprecations and Variants

Does "retired" mean that the code would be formally withdrawn? Assuming
it means this, does that mean that the code would never be reused for
some other language?

Addison

Peter Constable wrote:
> Clarification on "withdrawn": nothing that gets coded will later be un-co=
ded: if language Foo is assign an ID "foo", then Foo will always be coded a=
s "foo". But "foo" can be retired/deprecated.
>
> Peter
>
> -----Original Message-----
> From: Doug Ewell [mailto:dewell@roadrunner.com]
> Sent: Wednesday, August 08, 2007 11:45 PM
> To: LTRU Working Group
> Cc: Karen_Broome@spe.sony.com
> Subject: Re: [Ltru] Re: Serbo-Croatian Deprecations and Variants
>
> <Karen underscore Broome at spe dot sony dot com> wrote:
>
>> Just confirming that the deprecated tag is preferred.  (Seems a little
>> counterintuitive?)
>
> It won't be the last time.  The ISO 639-3 folks have made it known that
> A might be withdrawn and replaced by B and C, or vice versa, on an
> annual-review basis as supported by linguistic research.  We might have
> a lot more cases like Serbo-Croatian in the future.
>
> --
> Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
> http://users.adelphia.net/~dewell/
> http://www1.ietf.org/html.charters/ltru-charter.html
> http://www.alvestrand.no/mailman/listinfo/ietf-languages
>
>
>
> _______________________________________________
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From: Martin Duerst <duerst@it.aoyama.ac.jp>
Subject: Re: [Ltru] Re: Serbo-Croatian Deprecations and Variants
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At 15:21 07/08/08, Doug Ewell wrote:
><Karen underscore Broome at spe dot sony dot com> wrote:

>You can't use 'hbs' in any case, because it is defined in ISO 639-3 as equivalent to 'sh' (see http://www.sil.org/iso639-3/documentation.asp?id=hbs).  Whenever an alpha-2 and an alpha-3 code element exist for the same language, only the alpha-2 can be used in a language tag.  

Yes, very much so.

>That has been the rule since RFC 3066 first allowed alpha-3 subtags, and in the 4646 era we implement it by not putting the alpha-3 in the Registry.

Just cross-checking to be sure (and offline, so not able to look at
the document directly): Is this rule worded so that it clearly includes
all kinds of different sources?

Regards,   Martin.

>What makes Serbo-Croatian unusual in this regard is that there was a code element for it in ISO 639-1 (sh) and there is now one in 639-3 (hbs), but apparently never in ISO 639-2.  Furthermore, and strangely, the deletion of 'sh' from ISO 639-1 is no longer listed on the ISO 639-2/RA Change Notice page, even though we know it was once there because we gave 'sh' a Deprecated date of 2000-02-18 in the Registry (the same day Bosnian and many others were added).
>
>The resurrection of Serbo-Croatian as an ISO 639-3 macrolanguage poses an interesting challenge, because deprecation is supposed to be forever in the Registry.  (Section 3.4, item 1: "Values in the fields 'Type', 'Subtag', 'Tag', 'Added', 'Deprecated' and 'Preferred-Value' MUST NOT be changed and are guaranteed to be stable over time.")  My assumption is that 'sh' has to remain deprecated, and 'hbs' has to remain on the outside looking in.

Is there any way in the registry to find that instead of 'hbs', one
has to use 'sh'? Or is 'hbs' just simply totally absent from the
registry, even from comments?

>Back to your question:  If you know the content is Serbian, use 'sr'; if Croatian, use 'hr'; if Bosnian, use 'bs'.  If all you know is that it's some type of Serbo-Croatian, and you don't feel comfortable picking one of the other three arbitrarily, your best bet might be to use 'sh' even though Section 3.1.5 says you SHOULD NOT do so, and even though it feels wrong.

I think the resurrection of 'hbs' in iso-639-3 shows that the depreciaton
of 'sh' was somehow less serious than maybe other depreciations. On a
simple level, it didn't make sense to keep in 'sh' if subdivisions
were added, especially from a political viewpoint.

Regards,    Martin.



#-#-#  Martin J. Du"rst, Assoc. Professor, Aoyama Gakuin University
#-#-#  http://www.sw.it.aoyama.ac.jp       mailto:duerst@it.aoyama.ac.jp     



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From ltru-bounces@ietf.org Fri Aug 10 10:50:57 2007
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Martin Duerst <duerst at it dot aoyama dot ac dot jp> wrote:

>> That has been the rule since RFC 3066 first allowed alpha-3 subtags, 
>> and in the 4646 era we implement it by not putting the alpha-3 in the 
>> Registry.
>
> Just cross-checking to be sure (and offline, so not able to look at 
> the document directly): Is this rule worded so that it clearly 
> includes all kinds of different sources?

Section 2.2.1:  "Note: For languages that have both an ISO 639-1 
two-character code and an ISO 639-2 three-character code, only the ISO 
639-1 two-character code is defined in the IANA registry."

To be very strict, this should probably be "... only one subtag, 
corresponding to the ISO 639-1 two-character code, is defined..."  We 
don't define ISO codes, we define subtags based on them.

> Is there any way in the registry to find that instead of 'hbs', one 
> has to use 'sh'? Or is 'hbs' just simply totally absent from the 
> registry, even from comments?

'hbs' is totally absent from the Registry, just like 'eng' and 'fra' and 
'deu'.

> I think the resurrection of 'hbs' in iso-639-3 shows that the 
> depreciaton of 'sh' was somehow less serious than maybe other 
> depreciations. On a simple level, it didn't make sense to keep in 'sh' 
> if subdivisions were added, especially from a political viewpoint.

I don't know if it was a less-serious deprecation.  ISO 639-3 brought it 
back as a macrolanguage, a concept which didn't formally exist in -1 
and -2.

The whole business of splitting the concept of "Serbo-Croatian" on 
political grounds troubles me.  I know there are linguistic differences 
as well, but mutual non-intelligibility?  And in any case, 'no' was not 
withdrawn when 'nb' and nn' were added.

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages



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From ltru-bounces@ietf.org Fri Aug 10 11:03:20 2007
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Martin Duerst <duerst at it dot aoyama dot ac dot jp> wrote:

> Just cross-checking to be sure (and offline, so not able to look at 
> the document directly): Is this rule worded so that it clearly 
> includes all kinds of different sources?

and I quoted RFC 4646:

> Section 2.2.1:  "Note: For languages that have both an ISO 639-1 
> two-character code and an ISO 639-2 three-character code, only the ISO 
> 639-1 two-character code is defined in the IANA registry."

I missed the intent of Martin's question.  Draft-4646bis-08 does also 
include ISO 639-3 in this wording:

"Note: For languages that have both an ISO 639-1 two-character code and 
a three character code assigned by either ISO 639-2 or ISO 639-3, only 
the ISO 639-1 two-character code is defined in the IANA registry."

Language subtags are the only types of subtags for which this issue 
applies.  ISO 3166 defines three-letter and numeric country codes, and 
ISO 15924 defines numeric script codes, but these are not our concern 
since they cannot be valid LSR subtags.

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages



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From: Peter Constable <petercon@microsoft.com>
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Subject: RE: [Ltru] Re: Serbo-Croatian Deprecations and Variants
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From: Doug Ewell [mailto:dewell@roadrunner.com]

> To be very strict, this should probably be "... only one subtag,
> corresponding to the ISO 639-1 two-character code, is defined..."  We
> don't define ISO codes, we define subtags based on them.

I'd be inclined to say we don't define subtags; we register them.


Peter


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Peter Constable <petercon at microsoft dot com> wrote:

>> To be very strict, this should probably be "... only one subtag, 
>> corresponding to the ISO 639-1 two-character code, is defined..."  We 
>> don't define ISO codes, we define subtags based on them.
>
> I'd be inclined to say we don't define subtags; we register them.

Fair enough.

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages



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From ltru-bounces@ietf.org Fri Aug 17 01:46:17 2007
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From: "Doug Ewell" <dewell@roadrunner.com>
To: "LTRU Working Group" <ltru@ietf.org>
Date: Thu, 16 Aug 2007 22:46:07 -0700
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Subject: [Ltru] Notes before draft-4645bis-02
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I'm getting ready to put together draft-ietf-ltru-4645bis-02, and I have 
a few random comments for the list before I do.

I'm going to go ahead and be consistent with the model set in 
draft-4646bis-07, which has both extlang subtags and the Macrolanguage 
field, though I continue to believe only one of these features should 
ultimately be offered, to avoid needless confusion and duplication. 
Only seven primary language subtags will have a Macrolanguage field; for 
all the non-sign language extlangs -- 330 of them -- the Macrolanguage 
and Prefix fields will contain the exact same information.

One result of using extlangs is that the new ISO 639-3 code elements for 
sign languages will continue to be implemented as extlangs.  British 
Sign Language will be coded as "sgn-bfi" and not "bfi".  There are 152 
of these.

The reloaded Registry provided in draft-4645bis will continue to use hex 
NCRs instead of UTF-8, because Internet-Drafts must be all ASCII.  IANA 
will be responsible for converting the hex NCRs into UTF-8.  They have 
indicated that they can handle this, and I am willing to help with the 
process if needed.

We need to agree on what to do with almost-identical Description fields 
that will be created by adopting the exact ISO 639-3 reference names, 
which is an important point for some.  Without some other arrangement, 
we will have to add:

    Gwichʼin   to the existing   Gwich´in
    N'Ko   to the existing   N’Ko
    Macedo Romanian   to the existing   Macedo-Romanian

and keep the following pairs of descriptions which will be separated 
into their own fields:

    Geʻez   and   Ge'ez
    Hangul   and   Hangŭl   (plus Hangeul)
    Hanunoo   and   Hanunóo

(Whether your e-mail system shows or does not show the correct UTF-8 
characters above, the problem should be apparent.)

At this point, exactly 7,223 new language and extlang subtags will be 
added to the existing 490 language subtags.

As in previous drafts, the capitalization of the grandfathered tag 
"yi-latn" will be canonicalized to "yi-Latn", and the language subtags 
"anp" and "frr" will be moved out of the range of 2-letter subtags and 
into alphabetical order within the 3-letter range.  Draft-4645bis-02 
will add script subtag "Avst" to this list, which was inserted ahead of 
"Arab" and "Armn" in the existing Registry.  RFC 4646 says it is not an 
error for IANA to insert new subtags out of alphabetical order, but I 
think it would be more consistent to reload the Registry with them in 
order, and others have not objected in the past.

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages



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From ltru-bounces@ietf.org Fri Aug 17 18:18:47 2007
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Date: Fri, 17 Aug 2007 18:18:39 -0400
To: Doug Ewell <dewell@roadrunner.com>
Subject: Re: [Ltru] Notes before draft-4645bis-02
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Doug Ewell scripsit:

> I'm going to go ahead and be consistent with the model set in 
> draft-4646bis-07, which has both extlang subtags and the Macrolanguage 
> field, though I continue to believe only one of these features should 
> ultimately be offered, to avoid needless confusion and duplication. 

I've been trying to think how to formulate my perception that both
extlangs and the Macrolanguage: header have their place for some weeks
now, but am not entirely satisfied with any of it.  However, I'm going
to go ahead rather than continue in silence.

I think that extlang subtags and the Macrolanguage: header serve separate
purposes.  Extlang subtags are normative, and provide a shim between the
639-2 world we are in and the 639-3 world we are going to.  I would be
quite happy if, after the initial load, no more extlang subtags were
created *ever*.  It just allows people to tag their Algerian Arabic
content unambiguously without breaking the link to the existing tag "ar".

The Macrolanguage: header, however, is informative, not normative, and
it's subject to change as SIL adds and removes languages.  If a language
is split, the old tag may become a macrolanguage rather than being retired
by SIL (though this has not happened so far); if two languages are merged,
a new macrolanguage level may be created above them.  A language may be
moved into or out of an existing macrolanguage cluster.  All of this
change we can adapt to in order to provide additional assistance to
"RFC 4647 plus" matchers.  Authoritatively recording the relationship
between no, nb, and nn can't be anything but useful to those who care,
and at worst an excrescence (but a small one) to those who don't.

Comments?

> We need to agree on what to do with almost-identical Description fields 
> that will be created by adopting the exact ISO 639-3 reference names, 
> which is an important point for some.  

Let's blow off the 639-2 names; they are much less well checked and
maintained, and the field is only informative anyhow.

> As in previous drafts,  [...]

+1 to all.

-- 
We do, doodley do, doodley do, doodley do,        John Cowan <cowan@ccil.org>
What we must, muddily must, muddily must, muddily must; 
Muddily do, muddily do, muddily do, muddily do,    http://www.ccil.org/~cowan
Until we bust, bodily bust, bodily bust, bodily bust.  --Bokonon


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From ltru-bounces@ietf.org Sat Aug 18 01:17:51 2007
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From: "Doug Ewell" <dewell@roadrunner.com>
To: "LTRU Working Group" <ltru@ietf.org>
Date: Fri, 17 Aug 2007 22:17:43 -0700
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An editor's copy of draft-ietf-ltru-4645bis-02 has been posted to my Web 
site:

http://users.adelphia.net/~dewell/draft-ietf-ltru-4645bis-02.html
http://users.adelphia.net/~dewell/draft-ietf-ltru-4645bis-02.txt

Please review and offer comments.

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages



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From ltru-bounces@ietf.org Sat Aug 18 11:42:45 2007
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From: "Randy Presuhn" <randy_presuhn@mindspring.com>
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Hi -

As co-chair -

> From: "Doug Ewell" <dewell@roadrunner.com>
> To: "LTRU Working Group" <ltru@ietf.org>
> Sent: Friday, August 17, 2007 10:17 PM
> Subject: [Ltru] New draft posted to Web
>
> An editor's copy of draft-ietf-ltru-4645bis-02 has been posted to my Web 
> site:
...

Please, if you want the working group to comment, submit the draft to
internet-drafts@ietf.org  Working from "editor's copies" gives the
impression that internet-drafts have more weight than they do.

Randy



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From ltru-bounces@ietf.org Sat Aug 18 13:28:03 2007
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From: "Doug Ewell" <dewell@roadrunner.com>
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Randy Presuhn <randy underscore presuhn at mindspring dot com> wrote:

> Please, if you want the working group to comment, submit the draft to 
> internet-drafts at ietf.org

Done.

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages 



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From ltru-bounces@ietf.org Sat Aug 18 14:01:31 2007
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John Cowan <cowan at ccil dot org> wrote:

> I think that extlang subtags and the Macrolanguage: header serve 
> separate purposes...

The draft I just submitted supports both, and I fixed my program that 
converts the ISO 639-3 files to subtags so it will handle all three 
models: extlang only (as in previous drafts), Macrolanguage field only, 
or both (as in this draft), so future drafts can follow whichever model 
the group prefers.

> Let's blow off the 639-2 names; they are much less well checked and 
> maintained, and the field is only informative anyhow.

I thought we actively decided to change "N'Ko" (the language) to use the 
U+2019 curly apostrophe, to match the script name which came from ISO 
15924.  "Gwich´in" is a known abomination which was fixed within 639-2. 
"Macedo Romanian" is probably just a matter of inconsistent style.

But the three latter examples all come from 15924, whose Registration 
Authority can probably be assumed to know about character choices. :-) 
I don't mind Hangul and Hangŭl, and Hanunoo and Hanunóo so much -- at 
least they're visually distinguishable -- but I really don't like Geʻez 
and Ge'ez.  If it were up to me I'd pick one of those two and discard 
the other.

Anyway, the draft has been submitted to the RFC Editor with both fields, 
and with all names, so I hope the group provides thoughtful and timely 
feedback on what it really wants so we can finish this project.

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages



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From ltru-bounces@ietf.org Sun Aug 19 21:39:54 2007
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Subject: [Ltru] Talking about UTF-8 in 4645bis
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Draft-4645bis-02 doesn't make any mention of UTF-8, or of the fact that 
IANA must convert the "meat" of the document to UTF-8 in the process of 
reloading the Registry.  I'm guessing that it should, but where would be 
a suitable place?

Draft-4646bis-08 already talks about the Reviewer's and IANA's 
responsibilities in converting data to UTF-8, and I don't think it would 
be appropriate for draft-4645bis to supersede or contradict that.

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages



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From ltru-bounces@ietf.org Mon Aug 20 00:05:49 2007
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I'd suggest: In either section 2.5, as part of the introductory bits of 
section 3, or in section 5, add the text:

--
The final registry format uses the UTF-8 character encoding. Non-ASCII 
characters represented in this document by XML hex entities (such as 
&#xB4;) were converted by IANA to Unicode characters in the UTF-8 
encoding when the updated registry was instantiated.
--

We don't say (or need to say) how.

Addison

Doug Ewell wrote:
> Draft-4645bis-02 doesn't make any mention of UTF-8, or of the fact that 
> IANA must convert the "meat" of the document to UTF-8 in the process of 
> reloading the Registry.  I'm guessing that it should, but where would be 
> a suitable place?
> 
> Draft-4646bis-08 already talks about the Reviewer's and IANA's 
> responsibilities in converting data to UTF-8, and I don't think it would 
> be appropriate for draft-4645bis to supersede or contradict that.
> 
> -- 
> Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
> http://users.adelphia.net/~dewell/
> http://www1.ietf.org/html.charters/ltru-charter.html
> http://www.alvestrand.no/mailman/listinfo/ietf-languages
> 
> 
> 
> _______________________________________________
> Ltru mailing list
> Ltru@ietf.org
> https://www1.ietf.org/mailman/listinfo/ltru

-- 
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.


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From ltru-bounces@ietf.org Mon Aug 20 02:59:58 2007
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Subject: Re: [Ltru] Talking about UTF-8 in 4645bis
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Addison Phillips <addison at yahoo dash inc dot com> wrote:

> I'd suggest: In either section 2.5, as part of the introductory bits 
> of section 3, or in section 5, add the text:
>
> --
> The final registry format uses the UTF-8 character encoding. Non-ASCII 
> characters represented in this document by XML hex entities (such as 
> &#xB4;) were converted by IANA to Unicode characters in the UTF-8 
> encoding when the updated registry was instantiated.

I've added this to Section 3, after the RFC Editor Note.  As such, it's 
now an instruction to IANA about reloading the Registry, so I've 
converted it to the present tense.

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages



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From ltru-bounces@ietf.org Mon Aug 20 11:44:15 2007
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Actually, I was thinking of adding the present tense version and some 
MUSTard in Section 3.8 (Update of the Language Subtag Registry) of 
4646bis. In reading the current draft of your document, I didn't see any 
specific IANA instructions, and so guessed that it should use the past 
tense (as a matter of historical record).

Not that it makes much difference. What matters is that IANA knows what 
to do.

Doug Ewell wrote:
> Addison Phillips <addison at yahoo dash inc dot com> wrote:
> 
>> I'd suggest: In either section 2.5, as part of the introductory bits 
>> of section 3, or in section 5, add the text:
>>
>> -- 
>> The final registry format uses the UTF-8 character encoding. Non-ASCII 
>> characters represented in this document by XML hex entities (such as 
>> &#xB4;) were converted by IANA to Unicode characters in the UTF-8 
>> encoding when the updated registry was instantiated.
> 
> I've added this to Section 3, after the RFC Editor Note.  As such, it's 
> now an instruction to IANA about reloading the Registry, so I've 
> converted it to the present tense.
> 
> -- 
> Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
> http://users.adelphia.net/~dewell/
> http://www1.ietf.org/html.charters/ltru-charter.html
> http://www.alvestrand.no/mailman/listinfo/ietf-languages
> 

-- 
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.


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From ltru-bounces@ietf.org Tue Aug 21 10:22:11 2007
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Subject: Re: [Ltru] Talking about UTF-8 in 4645bis
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Addison Phillips <addison at yahoo dash inc dot com> wrote:

> Actually, I was thinking of adding the present tense version and some 
> MUSTard in Section 3.8 (Update of the Language Subtag Registry) of 
> 4646bis. In reading the current draft of your document, I didn't see 
> any specific IANA instructions, and so guessed that it should use the 
> past tense (as a matter of historical record).

Here's what I actually added to draft-03 (which still lives only on my 
jump drive, given that no comments on draft-02 have emerged yet).  This 
paragraph appears right after "must not be deleted" and right before the 
File-Date record.

"The Language Subtag Registry uses the UTF-8 character encoding. 
Non-ASCII characters represented in this document by XML hex entities 
(such as &amp;#xB4;) MUST be converted by IANA to Unicode characters in 
the UTF-8 encoding when the updated Registry is instantiated."

How is that?  Anyone?

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages



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From: Marion Gunn <mgunn@egt.ie>
Subject: Re: [Ltru] Talking about UTF-8 in 4645bis
Date: Tue, 21 Aug 2007 15:32:00 +0000
To: LTRU Working Group <ltru@ietf.org>
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"Instantiated" just means "represented by an instance" (check your =20
Concise Oxford). Please make it less hard on users, perhaps by using =20
"instated" (or something even simpler again).
mg
On 21 Aug 2007, at 14:22, scr=EDobh Doug Ewell:


> Addison Phillips <addison at yahoo dash inc dot com> wrote:
>
>
>
>> Actually, I was thinking of adding the present tense version and =20
>> some MUSTard in Section 3.8 (Update of the Language Subtag =20
>> Registry) of 4646bis. In reading the current draft of your =20
>> document, I didn't see any specific IANA instructions, and so =20
>> guessed that it should use the past tense (as a matter of =20
>> historical record).
>>
>>
>
> Here's what I actually added to draft-03 (which still lives only on =20=

> my jump drive, given that no comments on draft-02 have emerged =20
> yet).  This paragraph appears right after "must not be deleted" and =20=

> right before the File-Date record.
>
> "The Language Subtag Registry uses the UTF-8 character encoding. =20
> Non-ASCII characters represented in this document by XML hex =20
> entities (such as &amp;#xB4;) MUST be converted by IANA to Unicode =20
> characters in the UTF-8 encoding when the updated Registry is =20
> instantiated."
>
> How is that?  Anyone?
>
> --
> Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
> http://users.adelphia.net/~dewell/
> http://www1.ietf.org/html.charters/ltru-charter.html
> http://www.alvestrand.no/mailman/listinfo/ietf-languages
>
>
>
> _______________________________________________
> Ltru mailing list
> Ltru@ietf.org
> https://www1.ietf.org/mailman/listinfo/ltru
>
>

--
Marion Gunn
mgunn@ucd.ie



- -
Marion Gunn * EGTeo (Estab.1991)
27 P=E1irc an Fh=E9ithlinn, Baile an
Bh=F3thair, Co. =C1tha Cliath, =C9ire.
* mgunn@egt.ie * eamonn@egt.ie *



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From ltru-bounces@ietf.org Tue Aug 21 12:44:06 2007
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From: Addison Phillips <addison@yahoo-inc.com>
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To: Marion Gunn <mgunn@egt.ie>
Subject: Re: [Ltru] Talking about UTF-8 in 4645bis
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(laughing) 'Instantiated' is a bit of programming jargon. It will be=20
well-understood by that portion of the reader community. I didn't mean=20
to send anyone to their Oxford dictionary (concise or otherwise).

The important connotation of the word "instantiated" here is that the=20
act of instantiation is the creation of the registry. If we were to=20
replace the word (unnecessary, I think), it would be with the word=20
"created".

Best Regards,

Addison

--=20
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.


Marion Gunn wrote:
> "Instantiated" just means "represented by an instance" (check your=20
> Concise Oxford). Please make it less hard on users, perhaps by using=20
> "instated" (or something even simpler again).
> mg
> On 21 Aug 2007, at 14:22, scr=C3=ADobh Doug Ewell:
>=20
>=20
>> Addison Phillips <addison at yahoo dash inc dot com> wrote:
>>
>>
>>
>>> Actually, I was thinking of adding the present tense version and some=
=20
>>> MUSTard in Section 3.8 (Update of the Language Subtag Registry) of=20
>>> 4646bis. In reading the current draft of your document, I didn't see=20
>>> any specific IANA instructions, and so guessed that it should use the=
=20
>>> past tense (as a matter of historical record).
>>>
>>>
>>
>> Here's what I actually added to draft-03 (which still lives only on my=
=20
>> jump drive, given that no comments on draft-02 have emerged yet). =20
>> This paragraph appears right after "must not be deleted" and right=20
>> before the File-Date record.
>>
>> "The Language Subtag Registry uses the UTF-8 character encoding.=20
>> Non-ASCII characters represented in this document by XML hex entities=20
>> (such as &amp;#xB4;) MUST be converted by IANA to Unicode characters=20
>> in the UTF-8 encoding when the updated Registry is instantiated."
>>
>> How is that?  Anyone?
>>
>> --=20
>> Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
>> http://users.adelphia.net/~dewell/
>> http://www1.ietf.org/html.charters/ltru-charter.html
>> http://www.alvestrand.no/mailman/listinfo/ietf-languages
>>
>>
>>
>> _______________________________________________
>> Ltru mailing list
>> Ltru@ietf.org
>> https://www1.ietf.org/mailman/listinfo/ltru
>>
>>
>=20
> --=20
> Marion Gunn
> mgunn@ucd.ie
>=20
>=20
>=20
> - -
> Marion Gunn * EGTeo (Estab.1991)
> 27 P=C3=A1irc an Fh=C3=A9ithlinn, Baile an
> Bh=C3=B3thair, Co. =C3=81tha Cliath, =C3=89ire.
> * mgunn@egt.ie * eamonn@egt.ie *
>=20
>=20
>=20
> _______________________________________________
> Ltru mailing list
> Ltru@ietf.org
> https://www1.ietf.org/mailman/listinfo/ltru



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From: Marion Gunn <mgunn@egt.ie>
Subject: Re: [Ltru] Talking about UTF-8 in 4645bis
Date: Tue, 21 Aug 2007 18:17:28 +0000
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I happen to know that particular piece of programming jargon, =20
Addison, too, but do _not_ believe that all the target community can =20
be expected to do so. I do believe that it it would be easier for =20
such users if you used another word simply indicating the "creation =20
of the registry", as you put it. So much of my life is dedicated to =20
collecting and compiling dictionaries and standardizing new =20
terminology that I tend now to believe the simpler approach tends to =20
foster better comprehension. Not fighting the jargon at all - if you =20
like it, leave it in.
mg
On 21 Aug 2007, at 16:43, scr=EDobh Addison Phillips:

> (laughing) 'Instantiated' is a bit of programming jargon. It will =20
> be well-understood by that portion of the reader community. I =20
> didn't mean to send anyone to their Oxford dictionary (concise or =20
> otherwise).
>
> The important connotation of the word "instantiated" here is that =20
> the act of instantiation is the creation of the registry. If we =20
> were to replace the word (unnecessary, I think), it would be with =20
> the word "created".
>
> Best Regards,
>
> Addison

- -
Marion Gunn * EGTeo (Estab.1991)
27 P=E1irc an Fh=E9ithlinn, Baile an
Bh=F3thair, Co. =C1tha Cliath, =C9ire.
* mgunn@egt.ie * eamonn@egt.ie *



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In this case, you have to convince Doug: he's the editor of 4645bis :-).

Addison

Marion Gunn wrote:
> I happen to know that particular piece of programming jargon, Addison,=20
> too, but do _not_ believe that all the target community can be expected=
=20
> to do so. I do believe that it it would be easier for such users if you=
=20
> used another word simply indicating the "creation of the registry", as=20
> you put it. So much of my life is dedicated to collecting and compiling=
=20
> dictionaries and standardizing new terminology that I tend now to=20
> believe the simpler approach tends to foster better comprehension. Not=20
> fighting the jargon at all - if you like it, leave it in.
> mg
> On 21 Aug 2007, at 16:43, scr=C3=ADobh Addison Phillips:
>=20
>> (laughing) 'Instantiated' is a bit of programming jargon. It will be=20
>> well-understood by that portion of the reader community. I didn't mean=
=20
>> to send anyone to their Oxford dictionary (concise or otherwise).
>>
>> The important connotation of the word "instantiated" here is that the=20
>> act of instantiation is the creation of the registry. If we were to=20
>> replace the word (unnecessary, I think), it would be with the word=20
>> "created".
>>
>> Best Regards,
>>
>> Addison
>=20
> - -
> Marion Gunn * EGTeo (Estab.1991)
> 27 P=C3=A1irc an Fh=C3=A9ithlinn, Baile an
> Bh=C3=B3thair, Co. =C3=81tha Cliath, =C3=89ire.
> * mgunn@egt.ie * eamonn@egt.ie *
>=20
>=20
>=20
> _______________________________________________
> Ltru mailing list
> Ltru@ietf.org
> https://www1.ietf.org/mailman/listinfo/ltru

--=20
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.


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From: Marion Gunn <mgunn@egt.ie>
Subject: Re: [Ltru] Talking about UTF-8 in 4645bis
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Mostly, I get paid for de-jargonizing things for clients who afraid =20
their in-house covens are scaring away more   customers than they =20
attract - here, Doug gets my advice for free!:-)
mg
On 21 Aug 2007, at 17:29, scr=EDobh Addison Phillips:

> In this case, you have to convince Doug: he's the editor of =20
> 4645bis :-).
>
> Addison

- -
Marion Gunn * EGTeo (Estab.1991)
27 P=E1irc an Fh=E9ithlinn, Baile an
Bh=F3thair, Co. =C1tha Cliath, =C9ire.
* mgunn@egt.ie * eamonn@egt.ie *



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Subject: RE: [Ltru] Talking about UTF-8 in 4645bis
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There is definitely scope for a plain english campaign here :-)

Best

Debbie

> -----Original Message-----
> From: Marion Gunn [mailto:mgunn@egt.ie]
> Sent: 21 August 2007 19:39
> To: LTRU Working Group
> Subject: Re: [Ltru] Talking about UTF-8 in 4645bis
>
> Mostly, I get paid for de-jargonizing things for clients who afraid
> their in-house covens are scaring away more   customers than they
> attract - here, Doug gets my advice for free!:-) mg On 21 Aug
> 2007, at 17:29, scríobh Addison Phillips:
>
> > In this case, you have to convince Doug: he's the editor of 4645bis
> > :-).
> >
> > Addison
>
> - -
> Marion Gunn * EGTeo (Estab.1991)
> 27 Páirc an Fhéithlinn, Baile an
> Bhóthair, Co. Átha Cliath, Éire.
> * mgunn@egt.ie * eamonn@egt.ie *
>
>
>
> _______________________________________________
> Ltru mailing list
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> https://www1.ietf.org/mailman/listinfo/ltru
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>






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From: Marion Gunn <mgunn@egt.ie>
Subject: Re: [Ltru] Talking about UTF-8 in 4645bis
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Recte "are afraid". Actually, I first wrote "coveys", but replaced it =20=

with "covens", in case that would send too many members of this list =20
fumbling for the nearest dictionary to hand.
mg

On 21 Aug 2007, at 18:39, Marion Gunn:

> Mostly, I get paid for de-jargonizing things for clients who afraid =20=

> their in-house covens are scaring away more customers than they =20
> attract - here, Doug gets my advice for free!:-)
> mg
> On 21 Aug 2007, at 17:29, scr=EDobh Addison Phillips:
>
>
>> In this case, you have to convince Doug: he's the editor of =20
>> 4645bis :-).
>>
>> Addison
>>
>

- -
Marion Gunn * EGTeo (Estab.1991)
27 P=E1irc an Fh=E9ithlinn, Baile an
Bh=F3thair, Co. =C1tha Cliath, =C9ire.
* mgunn@egt.ie * eamonn@egt.ie *



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Cc: IETF Languages Discussion <ietf-languages@iana.org>, ltru@ietf.org
Subject: [Ltru] Re: Scottish English (was: LANGUAGE SUBTAG REGISTRATION FORM)
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Caoimhin,

I don't think what I'm seeing referred to as Standard Scottish English is=20
what you're referencing below. I don't see it mentioned as a "business=20
dialect". Do you have a link where this is described?

All,

Keep in mind: This is not abstract. I have a specific business need and=20
that semantic is best represented by a region. As previously noted, I'll=20
accept a classification of Standard Scottish English, but I don't think=20
this will be as accurate for what I'm trying to classify as "Scottish=20
English." A region tag would cover any Scottish dialect of English found=20
in the film and that's the reality of this situation.=20

Films flagged with the Scottish English tag would be more likely=20
candidates for subtitles or redubbing than other English variants, and the =

audience for these films would be different. I need a tag so users will=20
pull the right product from an online retailer, distributors will send the =

right product, the right language track is played on a DVD containing=20
multiple audio tracks, video-on-demand will push the right film based on=20
user preferences, we can accurately identify these items in a large=20
archive used to create derivative works and additional versions -- and=20
existing XML formats can effortlessly express all these variations.

To be honest, with so much documentation on the Web, a real-life use case, =

and a set of ears, I can't believe there is so much controversy over the=20
legitimacy of my request.  I would think the controversy would be over the =

best way to represent this linguistic entity as there's no way other than=20
a variant tag in RFC 4646 and it seems like there should be. I will need=20
to employ a private use tag if this request is not granted and whatever=20
the resulting tag is, I will need to encourage this use throughout the=20
entertainment industry. If spelling matters in written contexts, surely=20
accents matter in spoken contexts -- even if no differences in word choice =

existed.=20

English is a language and Scotland is a well-defined region. There is no=20
controversy about these two statements -- why is there so much controversy =

over putting the two together? Isn't this what the variant tag is for?

Regards,

Karen Broome
Metadata Systems Designer
Sony Pictures Entertainment




Caoimhin O Donnaile <caoimhin@smo.uhi.ac.uk>=20
Sent by: ietf-languages-bounces@alvestrand.no
08/21/2007 05:39 PM

To
Michael Everson <everson@evertype.com>
cc
IETF Languages Discussion <ietf-languages@iana.org>
Subject
Re: Scottish English (was: LANGUAGE SUBTAG REGISTRATION FORM)






> >But Scottish English is clear and well-defined enough as a variety=20
> >to be worth registering.
>=20
> Where and how is it defined?

I don't know.  Since everything is a continuum between "English",
"Scottish English" and "Scots", not to mention the regional
variations, any definition would have to be somewhat arbitrary.

I am sure, though, that if you did a cluster analysis of English speech
throughout Great Britain (having first eliminated anything which you
wished to classify as "Scots"), English speech in Scotland would
form a distinctive enough cluster to be worth giving a name to.
And indeed if you search with Google for "Scottish-English Scots"
you get 220,000 hits, showing that "Scottish English" is very
often used as a linguistic term.  I expect the same kind of problem
would arise with most variant tags which people wish to register, apart=20
from those relating to orthographic standards and suchlike.

If we wanted to attempt to pin down some kind of demarcation lines
at this stage, Derrick McLure at Aberdeen University would be a
good contact.

> Does "Scottish English" include Glasgow, Edinburgh, Aberdeen, and=20
> Inverness equally?

It would certainly include Glasgow, Edinburgh and Inverness.  I have
never been to Aberdeen, but I expect that a fair bit of the speech
on the streets o Aiberdeen would be classed as Scots - more so than
in the other Scottish cities.

After thinking about it, I share Michael's view that "en-scottish"
would be better than an obscure M.49 code, even if one were possible.

There was some talk of defining "en-scottish" to be "Standard
Scottish English" rather than "Scottish English".  I think that
would be a bad idea.  If I understand things, the archetype of
Standard Scottish English would be the English which educated
Scottish businessmen would aspire to use among themselves, which
would probably exclude a lot of the language in the Glasgow films
which Karen needs to catalogue.

Contrast:
  http://www.youtube.com/watch?v=3DwRXfF2sH0aU

with:
  http://www.youtube.com/watch?v=3D6wPf6xR4RTA

There is a fair difference between the language in each, I think.
Part of it may be that when confronted with a reporter from
BBC Scotland speaking something like Scottish Standard English,
John Smeaton attempts to match his language to hers.

Caoimh=EDn
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F
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<br><font size=3D2 face=3D"sans-serif">Caoimhin,</font>
<br>
<br><font size=3D2 face=3D"sans-serif">I don't think what I'm seeing referr=
ed
to as Standard Scottish English is what you're referencing below. I don't
see it mentioned as a &quot;business dialect&quot;. Do you have a link
where this is described?</font>
<br>
<br><font size=3D2 face=3D"sans-serif">All,</font>
<br>
<br><font size=3D2 face=3D"sans-serif">Keep in mind: This is not abstract.
I have a specific business need and that semantic is best represented by
a region. As previously noted, I'll accept a classification of Standard
Scottish English, but I don't think this will be as accurate for what I'm
trying to classify as &quot;Scottish English.&quot; A region tag would
cover any Scottish dialect of English found in the film and that's the
reality of this situation. &nbsp; </font>
<br>
<br><font size=3D2 face=3D"sans-serif">Films flagged with the Scottish Engl=
ish
tag would be more likely candidates for subtitles or redubbing than other
English variants, and the audience for these films would be different.
I need a tag so users will pull the right product from an online retailer,
distributors will send the right product, the right language track is played
on a DVD containing multiple audio tracks, video-on-demand will push the
right film based on user preferences, we can accurately identify these
items in a large archive used to create derivative works and additional
versions -- and existing XML formats can effortlessly express all these
variations.</font>
<br>
<br><font size=3D2 face=3D"sans-serif">To be honest, with so much documenta=
tion
on the Web, a real-life use case, and a set of ears, I can't believe there
is so much controversy over the legitimacy of my request. &nbsp;I would
think the controversy would be over the best way to represent this linguist=
ic
entity as there's no way other than a variant tag in RFC 4646 and it seems
like there should be. I will need to employ a private use tag if this reque=
st
is not granted and whatever the resulting tag is, I will need to encourage
this use throughout the entertainment industry. If spelling matters in
written contexts, surely accents matter in spoken contexts -- even if no
differences in word choice existed. </font>
<br>
<br><font size=3D2 face=3D"sans-serif">English is a language and Scotland is
a well-defined region. There is no controversy about these two statements
-- why is there so much controversy over putting the two together? Isn't
this what the variant tag is for?</font>
<br>
<br><font size=3D2 face=3D"sans-serif">Regards,</font>
<br>
<br><font size=3D2 face=3D"sans-serif">Karen Broome<br>
Metadata Systems Designer<br>
Sony Pictures Entertainment<br>
</font>
<br>
<br>
<br>
<table width=3D100%>
<tr valign=3Dtop>
<td width=3D40%><font size=3D1 face=3D"sans-serif"><b>Caoimhin O Donnaile &=
lt;caoimhin@smo.uhi.ac.uk&gt;</b>
</font>
<br><font size=3D1 face=3D"sans-serif">Sent by: ietf-languages-bounces@alve=
strand.no</font>
<p><font size=3D1 face=3D"sans-serif">08/21/2007 05:39 PM</font>
<td width=3D59%>
<table width=3D100%>
<tr valign=3Dtop>
<td>
<div align=3Dright><font size=3D1 face=3D"sans-serif">To</font></div>
<td><font size=3D1 face=3D"sans-serif">Michael Everson &lt;everson@evertype=
.com&gt;</font>
<tr valign=3Dtop>
<td>
<div align=3Dright><font size=3D1 face=3D"sans-serif">cc</font></div>
<td><font size=3D1 face=3D"sans-serif">IETF Languages Discussion &lt;ietf-l=
anguages@iana.org&gt;</font>
<tr valign=3Dtop>
<td>
<div align=3Dright><font size=3D1 face=3D"sans-serif">Subject</font></div>
<td><font size=3D1 face=3D"sans-serif">Re: Scottish English (was: LANGUAGE
SUBTAG REGISTRATION FORM)</font></table>
<br>
<table>
<tr valign=3Dtop>
<td>
<td></table>
<br></table>
<br>
<br>
<br><tt><font size=3D2>&gt; &gt;But Scottish English is clear and well-defi=
ned
enough as a variety <br>
&gt; &gt;to be worth registering.<br>
&gt; <br>
&gt; Where and how is it defined?<br>
<br>
I don't know. &nbsp;Since everything is a continuum between &quot;English&q=
uot;,<br>
&quot;Scottish English&quot; and &quot;Scots&quot;, not to mention the
regional<br>
variations, any definition would have to be somewhat arbitrary.<br>
<br>
I am sure, though, that if you did a cluster analysis of English speech<br>
throughout Great Britain (having first eliminated anything which you<br>
wished to classify as &quot;Scots&quot;), English speech in Scotland would<=
br>
form a distinctive enough cluster to be worth giving a name to.<br>
And indeed if you search with Google for &quot;Scottish-English Scots&quot;=
<br>
you get 220,000 hits, showing that &quot;Scottish English&quot; is very<br>
often used as a linguistic term. &nbsp;I expect the same kind of problem<br>
would arise with most variant tags which people wish to register, apart
<br>
from those relating to orthographic standards and suchlike.<br>
<br>
If we wanted to attempt to pin down some kind of demarcation lines<br>
at this stage, Derrick McLure at Aberdeen University would be a<br>
good contact.<br>
<br>
&gt; Does &quot;Scottish English&quot; include Glasgow, Edinburgh, Aberdeen,
and <br>
&gt; Inverness equally?<br>
<br>
It would certainly include Glasgow, Edinburgh and Inverness. &nbsp;I have<b=
r>
never been to Aberdeen, but I expect that a fair bit of the speech<br>
on the streets o Aiberdeen would be classed as Scots - more so than<br>
in the other Scottish cities.<br>
<br>
After thinking about it, I share Michael's view that &quot;en-scottish&quot=
;<br>
would be better than an obscure M.49 code, even if one were possible.<br>
<br>
There was some talk of defining &quot;en-scottish&quot; to be &quot;Standar=
d<br>
Scottish English&quot; rather than &quot;Scottish English&quot;. &nbsp;I
think that<br>
would be a bad idea. &nbsp;If I understand things, the archetype of<br>
Standard Scottish English would be the English which educated<br>
Scottish businessmen would aspire to use among themselves, which<br>
would probably exclude a lot of the language in the Glasgow films<br>
which Karen needs to catalogue.<br>
<br>
Contrast:<br>
 &nbsp;http://www.youtube.com/watch?v=3DwRXfF2sH0aU<br>
<br>
with:<br>
 &nbsp;http://www.youtube.com/watch?v=3D6wPf6xR4RTA<br>
<br>
There is a fair difference between the language in each, I think.<br>
Part of it may be that when confronted with a reporter from<br>
BBC Scotland speaking something like Scottish Standard English,<br>
John Smeaton attempts to match his language to hers.<br>
<br>
Caoimh=EDn<br>
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F<br>
Ietf-languages mailing list<br>
Ietf-languages@alvestrand.no<br>
http://www.alvestrand.no/mailman/listinfo/ietf-languages<br>
<br>
</font></tt>
<br>
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From: "Doug Ewell" <dewell@roadrunner.com>
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Addison Phillips <addison at yahoo dash inc dot com> wrote:

> In this case, you have to convince Doug: he's the editor of 4645bis 
> :-).

I have no problem with changing this to "created."

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages



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From ltru-bounces@ietf.org Thu Aug 23 05:17:33 2007
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From: "Doug Ewell" <dewell@roadrunner.com>
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On Tue, 3 Jul 2007 08:07:18 -0700, Peter Constable <petercon at 
microsoft dot com> wrote:

> +1 to specifying NFC (whether we use UTF-8 or NCRs).

I don't see this yet in draft-4646bis-08, so I propose the following New 
Wording™ for Section 3.1.1:

OLD:
Each field can be considered a single, logical line of Unicode [Unicode] 
characters, comprising a field-name and a field-body separated by a 
COLON character (%x3A).

NEW:
Each field can be considered a single, logical line of Unicode [Unicode] 
characters, comprising a field-name and a field-body separated by a 
COLON character (%x3A).  Each Unicode character MUST be represented in 
Normalization Form C (NFC), as specified in Unicode Standard Annex #15 
[UAX15].

[Note: This will require a new normative reference to UAX #15.  I don't 
know whether it will also require the existing informative reference to 
the Unicode Standard to be made normative.]

OLD:
Folding is always done on Unicode code point boundaries (never in the 
middle of a multibyte UTF-8 sequence).

NEW:
Folding is always done on Unicode code point boundaries (never in the 
middle of a multibyte UTF-8 sequence), and SHOULD NOT be done 
immediately before a combining character as defined by Unicode 
[Unicode].

[Note: Again, the SHOULD NOT may require the Unicode reference to be 
normative.]

Are there any other places where NFC needs to be mentioned, in either 
4646bis or 4645bis?

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
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From ltru-bounces@ietf.org Thu Aug 23 08:22:33 2007
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To: Doug Ewell <dewell@roadrunner.com>
Subject: Re: [Ltru] NFC
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Doug Ewell scripsit:

> NEW:
> Each field can be considered a single, logical line of Unicode [Unicode] 
> characters, comprising a field-name and a field-body separated by a 
> COLON character (%x3A).  Each Unicode character MUST be represented in 
> Normalization Form C (NFC), as specified in Unicode Standard Annex #15 
> [UAX15].

Being in NFC is a property of the field as a whole, not of each character.
For example, a + COMBINING ACUTE is not NFC, but q + COMBINING ACUTE is.
So:

s/Each Unicode character/The field

> [Note: This will require a new normative reference to UAX #15.  I don't 
> know whether it will also require the existing informative reference to 
> the Unicode Standard to be made normative.]

A normative reference to Unicode is a normative reference to UAX #15,
because UAXes are logically part of Unicode, and are kept separate only
for maintenance reasons.  (They are physically included in TUS 5.0
and later.)

> NEW:
> Folding is always done on Unicode code point boundaries (never in the 
> middle of a multibyte UTF-8 sequence), and SHOULD NOT be done 
> immediately before a combining character as defined by Unicode 
> [Unicode].

Make that MUST NOT.  A combining character applies to the immediatelly
preceding base character, and if that happens to be whitespace, that
means something different.

-- 
John Cowan    http://ccil.org/~cowan  cowan@ccil.org
'Tis the Linux rebellion / Let coders take their place,
The Linux-nationale / Shall Microsoft outpace,
We can write better programs / Our CPUs won't stall,
So raise the penguin banner of / The Linux-nationale.  --Greg Baker


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From ltru-bounces@ietf.org Fri Aug 24 02:04:58 2007
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Subject: Re: [Ltru] NFC
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John Cowan <cowan at ccil dot org> wrote:

> Being in NFC is a property of the field as a whole, not of each 
> character.  For example, a + COMBINING ACUTE is not NFC, but q + 
> COMBINING ACUTE is.  So:
>
> s/Each Unicode character/The field

Of course it is.  I knew that.

> A normative reference to Unicode is a normative reference to UAX #15, 
> because UAXes are logically part of Unicode, and are kept separate 
> only for maintenance reasons.  (They are physically included in TUS 
> 5.0 and later.)

<covers face>

I'm starting to think I should claim this was really just a Unicode pop 
quiz in disguise, and John passed.

> Make that MUST NOT.  A combining character applies to the immediatelly 
> preceding base character, and if that happens to be whitespace, that 
> means something different.

I almost had a defense here, that line folding would be collapsed to 
nothing, but of course that's not true either; lines are only folded 
where whitespace would occur anyway.

Any NFC-related edits to 4646bis should follow John's corrections.  And 
Doug needs to go back to Unicode school.

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages




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From ltru-bounces@ietf.org Fri Aug 24 11:47:45 2007
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Doug Ewell wrote:
>> Make that MUST NOT.  A combining character applies to the immediatelly 
>> preceding base character, and if that happens to be whitespace, that 
>> means something different.
> 
> I almost had a defense here, that line folding would be collapsed to 
> nothing, but of course that's not true either; lines are only folded 
> where whitespace would occur anyway.
> 
> Any NFC-related edits to 4646bis should follow John's corrections.  And 
> Doug needs to go back to Unicode school.
> 

Actually, this is a flaw in our version of record-jar. What we should 
have is the line-continuation character at the end of the previous line. 
Otherwise languages that use spaces to separate words are at a 
disadvantage... or languages that don't use spaces will have spurious 
ones introduced (pick your poison).

That is, consider this text:

Field: This is a wrapped
    line of text.

The unwrapping would make that field-body into this string:

"This is a wrappedline of text."

If a space were introduced by the unwrapping, any text that does not use 
spaces (Japanese, Chinese, Korean, Thai, etc. etc.) would have spurious 
spaces added at each line wrap.

If we added line continuation, we would have:

Field: The one space is followed by \
    &#x301; which is a combining mark.

John's objection that the U+0301 combines with the leading whitespace on 
the second line wouldn't hold if unwrapping were considered a 
higher-order file formatting rule. That is, the whitespace at the start 
of the second line isn't considered to be part of the text. This, 
actually, is how I considered it to work in my own implementations and 
the reason I only specified code point separation previously.

However, since we don't supply a very full description of record-jar, I 
have made the edits, including the MUST NOT edit, to prevent others from 
falling into the trap of interpreting the file as text and then 
performing the unwrapping.

Addison

-- 
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.


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Date: Fri, 24 Aug 2007 11:22:14 -0700
From: "Mark Davis" <mark.davis@icu-project.org>
To: "Addison Phillips" <addison@yahoo-inc.com>
Subject: Re: [Ltru] NFC
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My real preference would be no broken lines at all. Then we don't have to
jimmy around with it. Parsing is simpler and straightforward, and If someone
wants to see wrapped lines, then they just turn that on in their viewer (or
copy the contents to one that does wrap).

Mark

On 8/24/07, Addison Phillips <addison@yahoo-inc.com> wrote:
>
> Doug Ewell wrote:
> >> Make that MUST NOT.  A combining character applies to the immediatelly
> >> preceding base character, and if that happens to be whitespace, that
> >> means something different.
> >
> > I almost had a defense here, that line folding would be collapsed to
> > nothing, but of course that's not true either; lines are only folded
> > where whitespace would occur anyway.
> >
> > Any NFC-related edits to 4646bis should follow John's corrections.  And
> > Doug needs to go back to Unicode school.
> >
>
> Actually, this is a flaw in our version of record-jar. What we should
> have is the line-continuation character at the end of the previous line.
> Otherwise languages that use spaces to separate words are at a
> disadvantage... or languages that don't use spaces will have spurious
> ones introduced (pick your poison).
>
> That is, consider this text:
>
> Field: This is a wrapped
>     line of text.
>
> The unwrapping would make that field-body into this string:
>
> "This is a wrappedline of text."
>
> If a space were introduced by the unwrapping, any text that does not use
> spaces (Japanese, Chinese, Korean, Thai, etc. etc.) would have spurious
> spaces added at each line wrap.
>
> If we added line continuation, we would have:
>
> Field: The one space is followed by \
>     &#x301; which is a combining mark.
>
> John's objection that the U+0301 combines with the leading whitespace on
> the second line wouldn't hold if unwrapping were considered a
> higher-order file formatting rule. That is, the whitespace at the start
> of the second line isn't considered to be part of the text. This,
> actually, is how I considered it to work in my own implementations and
> the reason I only specified code point separation previously.
>
> However, since we don't supply a very full description of record-jar, I
> have made the edits, including the MUST NOT edit, to prevent others from
> falling into the trap of interpreting the file as text and then
> performing the unwrapping.
>
> Addison
>
> --
> Addison Phillips
> Globalization Architect -- Yahoo! Inc.
> Chair -- W3C Internationalization Core WG
>
> Internationalization is an architecture.
> It is not a feature.
>
>
> _______________________________________________
> Ltru mailing list
> Ltru@ietf.org
> https://www1.ietf.org/mailman/listinfo/ltru
>



-- 
Mark

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My real preference would be no broken lines at all. Then we don&#39;t have to jimmy around with it. Parsing is simpler and straightforward, and If someone wants to see wrapped lines, then they just turn that on in their viewer (or copy the contents to one that does wrap).
<br><br>Mark<br><br><div><span class="gmail_quote">On 8/24/07, <b class="gmail_sendername">Addison Phillips</b> &lt;<a href="mailto:addison@yahoo-inc.com">addison@yahoo-inc.com</a>&gt; wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Doug Ewell wrote:<br>&gt;&gt; Make that MUST NOT.&nbsp;&nbsp;A combining character applies to the immediatelly<br>&gt;&gt; preceding base character, and if that happens to be whitespace, that<br>&gt;&gt; means something different.<br>
&gt;<br>&gt; I almost had a defense here, that line folding would be collapsed to<br>&gt; nothing, but of course that&#39;s not true either; lines are only folded<br>&gt; where whitespace would occur anyway.<br>&gt;<br>&gt; Any NFC-related edits to 4646bis should follow John&#39;s corrections.&nbsp;&nbsp;And
<br>&gt; Doug needs to go back to Unicode school.<br>&gt;<br><br>Actually, this is a flaw in our version of record-jar. What we should<br>have is the line-continuation character at the end of the previous line.<br>Otherwise languages that use spaces to separate words are at a
<br>disadvantage... or languages that don&#39;t use spaces will have spurious<br>ones introduced (pick your poison).<br><br>That is, consider this text:<br><br>Field: This is a wrapped<br>&nbsp;&nbsp;&nbsp;&nbsp;line of text.<br><br>The unwrapping would make that field-body into this string:
<br><br>&quot;This is a wrappedline of text.&quot;<br><br>If a space were introduced by the unwrapping, any text that does not use<br>spaces (Japanese, Chinese, Korean, Thai, etc. etc.) would have spurious<br>spaces added at each line wrap.
<br><br>If we added line continuation, we would have:<br><br>Field: The one space is followed by \<br>&nbsp;&nbsp;&nbsp;&nbsp;&amp;#x301; which is a combining mark.<br><br>John&#39;s objection that the U+0301 combines with the leading whitespace on
<br>the second line wouldn&#39;t hold if unwrapping were considered a<br>higher-order file formatting rule. That is, the whitespace at the start<br>of the second line isn&#39;t considered to be part of the text. This,<br>
actually, is how I considered it to work in my own implementations and<br>the reason I only specified code point separation previously.<br><br>However, since we don&#39;t supply a very full description of record-jar, I<br>
have made the edits, including the MUST NOT edit, to prevent others from<br>falling into the trap of interpreting the file as text and then<br>performing the unwrapping.<br><br>Addison<br><br>--<br>Addison Phillips<br>Globalization Architect -- Yahoo! Inc.
<br>Chair -- W3C Internationalization Core WG<br><br>Internationalization is an architecture.<br>It is not a feature.<br><br><br>_______________________________________________<br>Ltru mailing list<br><a href="mailto:Ltru@ietf.org">
Ltru@ietf.org</a><br><a href="https://www1.ietf.org/mailman/listinfo/ltru">https://www1.ietf.org/mailman/listinfo/ltru</a><br></blockquote></div><br><br clear="all"><br>-- <br>Mark

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Yes, I agree completely.

However, we made 72-byte line length limits a part of RFC 4646. For 
compatibility's sake, we're probably stuck with wrapping. Note that this 
also means no line continuation character :-).

Addison

Mark Davis wrote:
> My real preference would be no broken lines at all. Then we don't have 
> to jimmy around with it. Parsing is simpler and straightforward, and If 
> someone wants to see wrapped lines, then they just turn that on in their 
> viewer (or copy the contents to one that does wrap).
> 
> Mark
> 
> On 8/24/07, *Addison Phillips* <addison@yahoo-inc.com 
> <mailto:addison@yahoo-inc.com>> wrote:
> 
>     Doug Ewell wrote:
>      >> Make that MUST NOT.  A combining character applies to the
>     immediatelly
>      >> preceding base character, and if that happens to be whitespace, that
>      >> means something different.
>      >
>      > I almost had a defense here, that line folding would be collapsed to
>      > nothing, but of course that's not true either; lines are only folded
>      > where whitespace would occur anyway.
>      >
>      > Any NFC-related edits to 4646bis should follow John's
>     corrections.  And
>      > Doug needs to go back to Unicode school.
>      >
> 
>     Actually, this is a flaw in our version of record-jar. What we should
>     have is the line-continuation character at the end of the previous line.
>     Otherwise languages that use spaces to separate words are at a
>     disadvantage... or languages that don't use spaces will have spurious
>     ones introduced (pick your poison).
> 
>     That is, consider this text:
> 
>     Field: This is a wrapped
>         line of text.
> 
>     The unwrapping would make that field-body into this string:
> 
>     "This is a wrappedline of text."
> 
>     If a space were introduced by the unwrapping, any text that does not use
>     spaces (Japanese, Chinese, Korean, Thai, etc. etc.) would have spurious
>     spaces added at each line wrap.
> 
>     If we added line continuation, we would have:
> 
>     Field: The one space is followed by \
>         &#x301; which is a combining mark.
> 
>     John's objection that the U+0301 combines with the leading
>     whitespace on
>     the second line wouldn't hold if unwrapping were considered a
>     higher-order file formatting rule. That is, the whitespace at the start
>     of the second line isn't considered to be part of the text. This,
>     actually, is how I considered it to work in my own implementations and
>     the reason I only specified code point separation previously.
> 
>     However, since we don't supply a very full description of record-jar, I
>     have made the edits, including the MUST NOT edit, to prevent others from
>     falling into the trap of interpreting the file as text and then
>     performing the unwrapping.
> 
>     Addison
> 
>     --
>     Addison Phillips
>     Globalization Architect -- Yahoo! Inc.
>     Chair -- W3C Internationalization Core WG
> 
>     Internationalization is an architecture.
>     It is not a feature.
> 
> 
>     _______________________________________________
>     Ltru mailing list
>     Ltru@ietf.org <mailto:Ltru@ietf.org>
>     https://www1.ietf.org/mailman/listinfo/ltru
> 
> 
> 
> 
> -- 
> Mark

-- 
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.


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Date: Fri, 24 Aug 2007 14:59:32 -0700
From: Addison Phillips <addison@yahoo-inc.com>
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Subject: [Ltru] draft-ietf-ltru-rfc4646bis-08
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Dear Editors,

Please find attached in the usual text format draft-08 of 
draft-ietf-ltru-rfc4646bis.

Best Regards,

Addison (for the editors)

-- 
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.

--------------040309020300080408060809
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From ltru-bounces@ietf.org Fri Aug 24 22:34:09 2007
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Addison Phillips <addison at yahoo dash inc dot com> wrote:

> Actually, this is a flaw in our version of record-jar. What we should 
> have is the line-continuation character at the end of the previous 
> line. Otherwise languages that use spaces to separate words are at a 
> disadvantage... or languages that don't use spaces will have spurious 
> ones introduced (pick your poison).

Yeah, but I don't think we've got room right now for another change in 
the registry format, considering that 4646bis was widely portrayed as 
"ISO 639-3 plus a few minor tweaks."

I'd like to see both drafts go to WG Last Call by the end of September 
2007.  Can we manage that?

> John's objection that the U+0301 combines with the leading whitespace 
> on the second line wouldn't hold if unwrapping were considered a 
> higher-order file formatting rule. That is, the whitespace at the 
> start of the second line isn't considered to be part of the text. 
> This, actually, is how I considered it to work in my own 
> implementations and the reason I only specified code point separation 
> previously.

Actually, the way I view wrapping is that the whitespace at the start of 
the second line ISN'T part of the text.  Rather, the CRLF at the end of 
the first line and the two spaces at the start of the second line are 
removed, and then a single space is inserted.  I don't know if that's 
confusing to anyone else, but it makes sense to me.

Since we already reference Unicode, I suppose we could add a rule that a 
space should or should not be inserted at the line-wrap point depending 
on the Script category of the surrounding text.  That would be 
compatible with what we say now about the matter (viz. nothing).  But 
since this is only likely to affect Comments fields, you can imagine how 
low a priority I think it should be.

--
Doug Ewell · Fullerton, California, USA · RFC 4645 · UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages



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> I'd like to see both drafts go to WG Last Call by the end of September
> 2007.  Can we manage that?



It really depends on whether we can resolve the extlang question -- I think
that is the only major outstanding issue.

Mark

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<br><div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">I&#39;d like to see both drafts go to WG Last Call by the end of September<br>2007.&nbsp;&nbsp;Can we manage that?
</blockquote><div><br><br>It really depends on whether we can resolve the extlang question -- I think that is the only major outstanding issue. <br><br>Mark<br></div></div>

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From ltru-bounces@ietf.org Tue Aug 28 08:55:45 2007
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From: Marion Gunn <mgunn@egt.ie>
Subject: Re: [Ltru] draft-ietf-ltru-rfc4646bis-08
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For starters, suggest losing the entire first sentence of paragraph 1 =20=

below, inserting the word "human" before "language" in its second =20
sentence and inserting the following comma-plus-clause text ", such =20
reasons as are set out below" before its closing full stop.
mg


On 24 Aug 2007, at 21:59, scr=EDobh Addison Phillips:


> Phillips & Davis        Expires February 25, 2008               =20
> [Page 3]
> Internet-Draft              langtags-registry                August =20=

> 2007
>
>
> 1.  Introduction
>
>    Human beings on our planet have, past and present, used a number of
>    languages.  There are many reasons why one would want to =20
> identify the
>    language used when presenting or requesting information.
>
>

--
Marion Gunn
mgunn@ucd.ie=


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Marion,

This text has existed for a long time. In fact, it is taken verbatim=20
from RFC 3066 (RFC 1766 had a similar, but different, sentence). This=20
isn't a substantive edit and doesn't address the real open issue in our=20
draft, which is how to handle extlangs.

Regards,

Addison

Marion Gunn wrote:
> For starters, suggest losing the entire first sentence of paragraph 1=20
> below, inserting the word "human" before "language" in its second=20
> sentence and inserting the following comma-plus-clause text ", such=20
> reasons as are set out below" before its closing full stop.
> mg
>=20
>=20
> On 24 Aug 2007, at 21:59, scr=C3=ADobh Addison Phillips:
>=20
>=20
>> Phillips & Davis        Expires February 25, 2008               [Page =
3]
>> Internet-Draft              langtags-registry                August 20=
07
>>
>>
>> 1.  Introduction
>>
>>    Human beings on our planet have, past and present, used a number of
>>    languages.  There are many reasons why one would want to identify t=
he
>>    language used when presenting or requesting information.
>>
>>
>=20
> --=20
> Marion Gunn
> mgunn@ucd.ie
>=20
> _______________________________________________
> Ltru mailing list
> Ltru@ietf.org
> https://www1.ietf.org/mailman/listinfo/ltru

--=20
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.


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Date: Tue, 28 Aug 2007 07:07:47 -0700
From: "Mark Davis" <mark.davis@icu-project.org>
To: "Addison Phillips" <addison@yahoo-inc.com>
Subject: Re: [Ltru] draft-ietf-ltru-rfc4646bis-08
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Just to open up the discussion, the biggest problem with this version is
that it uses a substantial new mechanism (extlang) which was not used in RFC
4646, and for which there is no consensus in this group to use in RFC
4646bis. We haven't removed extlang from the draft yet, but the people that
want this new mechanism need to provide justification, that:

   1. it is substantially better to have languages like 'cmn' be put in a
   secondary position (eg zh-cmn-Hant-CN), rather than being primary subtags on
   their own (eg cmn-Hant-CN).
   2. it is sufficiently better to warrant making the language tags more
   complicated by the addition of this mechanism.

Mark

On 8/24/07, Addison Phillips <addison@yahoo-inc.com> wrote:
>
> Dear Editors,
>
> Please find attached in the usual text format draft-08 of
> draft-ietf-ltru-rfc4646bis.
>
> Best Regards,
>
> Addison (for the editors)
>
> --
> Addison Phillips
> Globalization Architect -- Yahoo! Inc.
> Chair -- W3C Internationalization Core WG
>
> Internationalization is an architecture.
> It is not a feature.
>
>
>
>
> Network Working Group                                   A. Phillips, Ed.
> Internet-Draft                                               Yahoo! Inc.
> Obsoletes: 4646 (if approved)                              M. Davis, Ed.
> Intended status: Best Current                                     Google
> Practice                                                 August 24, 2007
> Expires: February 25, 2008
>
>
>                      Tags for Identifying Languages
>                        draft-ietf-ltru-4646bis-08
>
> Status of this Memo
>
>    By submitting this Internet-Draft, each author represents that any
>    applicable patent or other IPR claims of which he or she is aware
>    have been or will be disclosed, and any of which he or she becomes
>    aware will be disclosed, in accordance with Section 6 of BCP 79.
>
>    Internet-Drafts are working documents of the Internet Engineering
>    Task Force (IETF), its areas, and its working groups.  Note that
>    other groups may also distribute working documents as Internet-
>    Drafts.
>
>    Internet-Drafts are draft documents valid for a maximum of six months
>    and may be updated, replaced, or obsoleted by other documents at any
>    time.  It is inappropriate to use Internet-Drafts as reference
>    material or to cite them other than as "work in progress."
>
>    The list of current Internet-Drafts can be accessed at
>    http://www.ietf.org/ietf/1id-abstracts.txt.
>
>    The list of Internet-Draft Shadow Directories can be accessed at
>    http://www.ietf.org/shadow.html.
>
>    This Internet-Draft will expire on February 25, 2008.
>
> Copyright Notice
>
>    Copyright (C) The IETF Trust (2007).
>
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> Phillips & Davis        Expires February 25, 2008               [Page 1]
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> Internet-Draft              langtags-registry                August 2007
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> Abstract
>
>    This document describes the structure, content, construction, and
>    semantics of language tags for use in cases where it is desirable to
>    indicate the language used in an information object.  It also
>    describes how to register values for use in language tags and the
>    creation of user-defined extensions for private interchange.
>
>
> Table of Contents
>
>    1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4
>    2.  The Language Tag . . . . . . . . . . . . . . . . . . . . . . .  5
>      2.1.  Syntax . . . . . . . . . . . . . . . . . . . . . . . . . .  5
>      2.2.  Language Subtag Sources and Interpretation . . . . . . . .  8
>        2.2.1.  Primary Language Subtag  . . . . . . . . . . . . . . .  9
>        2.2.2.  Extended Language Subtags  . . . . . . . . . . . . . . 11
>        2.2.3.  Script Subtag  . . . . . . . . . . . . . . . . . . . . 12
>        2.2.4.  Region Subtag  . . . . . . . . . . . . . . . . . . . . 13
>        2.2.5.  Variant Subtags  . . . . . . . . . . . . . . . . . . . 15
>        2.2.6.  Extension Subtags  . . . . . . . . . . . . . . . . . . 16
>        2.2.7.  Private Use Subtags  . . . . . . . . . . . . . . . . . 17
>        2.2.8.  Grandfathered Registrations  . . . . . . . . . . . . . 18
>        2.2.9.  Classes of Conformance . . . . . . . . . . . . . . . . 18
>    3.  Registry Format and Maintenance  . . . . . . . . . . . . . . . 20
>      3.1.  Format of the IANA Language Subtag Registry  . . . . . . . 20
>        3.1.1.  File Format  . . . . . . . . . . . . . . . . . . . . . 20
>        3.1.2.  Record Definitions . . . . . . . . . . . . . . . . . . 21
>        3.1.3.  Subtag and Tag Fields  . . . . . . . . . . . . . . . . 24
>        3.1.4.  Description Field  . . . . . . . . . . . . . . . . . . 24
>        3.1.5.  Deprecated Field . . . . . . . . . . . . . . . . . . . 25
>        3.1.6.  Preferred-Value Field  . . . . . . . . . . . . . . . . 25
>        3.1.7.  Prefix Field . . . . . . . . . . . . . . . . . . . . . 26
>        3.1.8.  Suppress-Script Field  . . . . . . . . . . . . . . . . 27
>        3.1.9.  Macrolanguage Field  . . . . . . . . . . . . . . . . . 27
>        3.1.10. Comments Field . . . . . . . . . . . . . . . . . . . . 28
>      3.2.  Language Subtag Reviewer . . . . . . . . . . . . . . . . . 28
>      3.3.  Maintenance of the Registry  . . . . . . . . . . . . . . . 29
>      3.4.  Stability of IANA Registry Entries . . . . . . . . . . . . 29
>      3.5.  Registration Procedure for Subtags . . . . . . . . . . . . 34
>      3.6.  Possibilities for Registration . . . . . . . . . . . . . . 38
>      3.7.  Extensions and Extensions Registry . . . . . . . . . . . . 40
>      3.8.  Update of the Language Subtag Registry . . . . . . . . . . 43
>    4.  Formation and Processing of Language Tags  . . . . . . . . . . 44
>      4.1.  Choice of Language Tag . . . . . . . . . . . . . . . . . . 44
>      4.2.  Meaning of the Language Tag  . . . . . . . . . . . . . . . 48
>      4.3.  Length Considerations  . . . . . . . . . . . . . . . . . . 50
>        4.3.1.  Working with Limited Buffer Sizes  . . . . . . . . . . 50
>
>
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> Phillips & Davis        Expires February 25, 2008               [Page 2]
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> Internet-Draft              langtags-registry                August 2007
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>        4.3.2.  Truncation of Language Tags  . . . . . . . . . . . . . 52
>      4.4.  Canonicalization of Language Tags  . . . . . . . . . . . . 52
>      4.5.  Considerations for Private Use Subtags . . . . . . . . . . 54
>    5.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 56
>      5.1.  Language Subtag Registry . . . . . . . . . . . . . . . . . 56
>      5.2.  Extensions Registry  . . . . . . . . . . . . . . . . . . . 57
>    6.  Security Considerations  . . . . . . . . . . . . . . . . . . . 58
>    7.  Character Set Considerations . . . . . . . . . . . . . . . . . 59
>    8.  Changes from RFC 4646  . . . . . . . . . . . . . . . . . . . . 60
>    9.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 64
>      9.1.  Normative References . . . . . . . . . . . . . . . . . . . 64
>      9.2.  Informative References . . . . . . . . . . . . . . . . . . 65
>    Appendix A.  Acknowledgements  . . . . . . . . . . . . . . . . . . 67
>    Appendix B.  Examples of Language Tags (Informative) . . . . . . . 68
>    Appendix C.  Examples of Registration Forms  . . . . . . . . . . . 71
>    Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 73
>    Intellectual Property and Copyright Statements . . . . . . . . . . 74
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> Phillips & Davis        Expires February 25, 2008               [Page 3]
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> Internet-Draft              langtags-registry                August 2007
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>
> 1.  Introduction
>
>    Human beings on our planet have, past and present, used a number of
>    languages.  There are many reasons why one would want to identify the
>    language used when presenting or requesting information.
>
>    A user's language preferences often need to be identified so that
>    appropriate processing can be applied.  For example, the user's
>    language preferences in a Web browser can be used to select Web pages
>    appropriately.  Language preferences can also be used to select among
>    tools (such as dictionaries) to assist in the processing or
>    understanding of content in different languages.
>
>    In addition, knowledge about the particular language used by some
>    piece of information content might be useful or even required by some
>    types of processing; for example, spell-checking, computer-
>    synthesized speech, Braille transcription, or high-quality print
>    renderings.
>
>    One means of indicating the language used is by labeling the
>    information content with an identifier or "tag".  These tags can be
>    used to specify user preferences when selecting information content,
>    or for labeling additional attributes of content and associated
>    resources.
>
>    Tags can also be used to indicate additional language attributes of
>    content.  For example, indicating specific information about the
>    dialect, writing system, or orthography used in a document or
>    resource may enable the user to obtain information in a form that
>    they can understand, or it can be important in processing or
>    rendering the given content into an appropriate form or style.
>
>    This document specifies a particular identifier mechanism (the
>    language tag) and a registration function for values to be used to
>    form tags.  It also defines a mechanism for private use values and
>    future extension.
>
>    This document replaces [RFC4646], which replaced [RFC3066] and its
>    predecessor [RFC1766].  For a list of changes in this document, see
>    Section 8.
>
>    The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
>    "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
>    document are to be interpreted as described in [RFC2119].
>
>
>
>
>
>
>
> Phillips & Davis        Expires February 25, 2008               [Page 4]
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> Internet-Draft              langtags-registry                August 2007
>
>
> 2.  The Language Tag
>
>    Language tags are used to help identify languages, whether spoken,
>    written, signed, or otherwise signaled, for the purpose of
>    communication.  This includes constructed and artificial languages,
>    but excludes languages not intended primarily for human
>    communication, such as programming languages.
>
> 2.1.  Syntax
>
>    The language tag is composed of one or more parts, known as
>    "subtags".  Each subtag consists of a sequence of alphanumeric
>    characters.  Subtags are distinguished and separated from one another
>    by a hyphen ("-", ABNF [RFC4234] %x2D).  A language tag consists of a
>    "primary language" subtag and a (possibly empty) series of subsequent
>    subtags, each of which refines or narrows the range of languages
>    identified by the overall tag.
>
>    Usually, each type of subtag is distinguished by length, position in
>    the tag, and content: subtags can be recognized solely by these
>    features.  The only exception to this is a fixed list of
>    grandfathered tags registered under RFC 3066 [RFC3066].  This makes
>    it possible to construct a parser that can extract and assign some
>    semantic information to the subtags, even if the specific subtag
>    values are not recognized.  Thus, a parser need not have an up-to-
>    date copy (or any copy at all) of the subtag registry to perform most
>    searching and matching operations.
>
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>    The syntax of the language tag in ABNF [RFC4234] is:
>
>    Language-Tag  = langtag
>                  / privateuse             ; private use tag
>                  / irregular              ; tags grandfathered by rule
>
>    langtag       = (language
>                     ["-" script]
>                     ["-" region]
>                     *("-" variant)
>                     *("-" extension)
>                     ["-" privateuse])
>
>    language      = (2*3ALPHA [ extlang ]) ; shortest ISO 639 code
>                  / 4ALPHA                 ; reserved for future use
>                  / 5*8ALPHA               ; registered language subtag
>
>    extlang       = *3("-" 3ALPHA)         ; specific ISO 639-3 codes
>
>    script        = 4ALPHA                 ; ISO 15924 code
>
>    region        = 2ALPHA                 ; ISO 3166 code
>                  / 3DIGIT                 ; UN M.49 code
>
>    variant       = 5*8alphanum            ; registered variants
>                  / (DIGIT 3alphanum)
>
>    extension     = singleton 1*("-" (2*8alphanum))
>
>    singleton     = %x41-57 / %x59-5A / %x61-77 / %x79-7A / DIGIT
>                  ; "a"-"w" / "y"-"z" / "A"-"W" / "Y"-"Z" / "0"-"9"
>                  ; Single alphanumerics
>                  ; "x" is reserved for private use
>
>    privateuse    = "x" 1*("-" (1*8alphanum))
>
>    irregular     = "en-GB-oed" / "i-ami" / "i-bnn" / "i-default"
>                  / "i-enochian" / "i-hak" / "i-klingon" / "i-lux"
>                  / "i-mingo" / "i-navajo" / "i-pwn" / "i-tao"
>                  / "i-tay" / "i-tsu" / "sgn-BE-fr" / "sgn-BE-nl"
>                  / "sgn-CH-de"
>
>    alphanum      = (ALPHA / DIGIT)       ; letters and numbers
>
>                         Figure 1: Language Tag ABNF
>
>    All subtags have a maximum length of eight characters and whitespace
>    is not permitted in a language tag.  There is a subtlety in the ABNF
>
>
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> Phillips & Davis        Expires February 25, 2008               [Page 6]
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>
>    production 'variant': variants starting with a digit MAY be four
>    characters long, while those starting with a letter MUST be at least
>    five characters long.  For examples of language tags, see Appendix B.
>
>    Note Well: the ABNF syntax does not distinguish between upper and
>    lowercase.  The appearance of upper and lowercase letters in the
>    varous ABNF productions above do not affect how implementations
>    interpret tags.  That is, the tag "I-AMI" matches the item "i-ami" in
>    the 'irregular' production.  At all times, the tags and their
>    subtags, including private use and extensions, are to be treated as
>    case insensitive: there exist conventions for the capitalization of
>    some of the subtags, but these MUST NOT be taken to carry meaning.
>
>    For example:
>
>    o  [ISO639-1] recommends that language codes be written in lowercase
>       ('mn' Mongolian).
>
>    o  [ISO3166-1] recommends that country codes be capitalized ('MN'
>       Mongolia).
>
>    o  [ISO15924] recommends that script codes use lowercase with the
>       initial letter capitalized ('Cyrl' Cyrillic).
>
>    However, in the tags defined by this document, the uppercase US-ASCII
>    letters in the range 'A' through 'Z' are considered equivalent and
>    mapped directly to their US-ASCII lowercase equivalents in the range
>    'a' through 'z'.  Thus, the tag "mn-Cyrl-MN" is not distinct from
>    "MN-cYRL-mn" or "mN-cYrL-Mn" (or any other combination), and each of
>    these variations conveys the same meaning: Mongolian written in the
>    Cyrillic script as used in Mongolia.
>
>    Although case distinctions do not carry meaning in language tags,
>    consistent formatting and presentation of the tags will aid users.
>    The format of the tags and subtags in the registry is RECOMMENDED.
>    In this format, all non-initial two-letter subtags are uppercase, all
>    non-initial four-letter subtags are titlecase, and all other subtags
>    are lowercase.
>
>    Note that although [RFC4234] refers to octets, the language tags
>    described in this document are sequences of characters from the US-
>    ASCII [ISO646] repertoire.  Language tags MAY be used in documents
>    and applications that use other encodings, so long as these encompass
>    the US-ASCII repertoire.  An example of this would be an XML document
>    that uses the UTF-16LE [RFC2781] encoding of [Unicode].
>
>
>
>
>
>
> Phillips & Davis        Expires February 25, 2008               [Page 7]
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> 2.2.  Language Subtag Sources and Interpretation
>
>    The namespace of language tags and their subtags is administered by
>    the Internet Assigned Numbers Authority (IANA) [RFC2860] according to
>    the rules in Section 5 of this document.  The Language Subtag
>    Registry maintained by IANA is the source for valid subtags: other
>    standards referenced in this section provide the source material for
>    that registry.
>
>    Terminology used in this document:
>
>    o  Tag or tags refers to a complete language tag, such as
>       "sr-Latn-RS" or "az-Arab-IR".  Examples of tags in this document
>       are enclosed in double-quotes ("en-US").
>
>    o  Subtag refers to a specific section of a tag, delimited by hyphen,
>       such as the subtag 'Hant' in "zh-Hant-CN".  Examples of subtags in
>       this document are enclosed in single quotes ('Hant').
>
>    o  Code or codes refers to values defined in external standards (and
>       which are used as subtags in this document).  For example, 'Hant'
>       is an [ISO15924] script code that was used to define the 'Hant'
>       script subtag for use in a language tag.  Examples of codes in
>       this document are enclosed in single quotes ('en', 'Hant').
>
>    The definitions in this section apply to the various subtags within
>    the language tags defined by this document, excepting those
>    "grandfathered" tags defined in Section 2.2.8.
>
>    Language tags are designed so that each subtag type has unique length
>    and content restrictions.  These make identification of the subtag's
>    type possible, even if the content of the subtag itself is
>    unrecognized.  This allows tags to be parsed and processed without
>    reference to the latest version of the underlying standards or the
>    IANA registry and makes the associated exception handling when
>    parsing tags simpler.
>
>    Subtags in the IANA registry that do not come from an underlying
>    standard can only appear in specific positions in a tag.
>    Specifically, they can only occur as primary language subtags or as
>    variant subtags.
>
>    Note that sequences of private use and extension subtags MUST occur
>    at the end of the sequence of subtags and MUST NOT be interspersed
>    with subtags defined elsewhere in this document.
>
>    Single-letter and single-digit subtags are reserved for current or
>    future use.  These include the following current uses:
>
>
>
> Phillips & Davis        Expires February 25, 2008               [Page 8]
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>    o  The single-letter subtag 'x' is reserved to introduce a sequence
>       of private use subtags.  The interpretation of any private use
>       subtags is defined solely by private agreement and is not defined
>       by the rules in this section or in any standard or registry
>       defined in this document.
>
>    o  All other single-letter subtags are reserved to introduce
>       standardized extension subtag sequences as described in
>       Section 3.7.
>
>    The single-letter subtag 'i' is used by some grandfathered tags, such
>    as "i-default", where it always appears in the first position and
>    cannot be confused with an extension.
>
> 2.2.1.  Primary Language Subtag
>
>    The primary language subtag is the first subtag in a language tag
>    (with the exception of private use and certain grandfathered tags)
>    and cannot be omitted.  The following rules apply to the primary
>    language subtag:
>
>    1.  All two-character primary language subtags were defined in the
>        IANA registry according to the assignments found in the standard
>        ISO 639 Part 1, "ISO 639-1:2002, Codes for the representation of
>        names of languages -- Part 1: Alpha-2 code" [ISO639-1], or using
>        assignments subsequently made by the ISO 639-1 registration
>        authority (RA) or governing standardization bodies.
>
>    2.  All three-character primary language subtags were defined in the
>        IANA registry according to the assignments found in either ISO
>        639 Part 2, "ISO 639-2:1998 - Codes for the representation of
>        names of languages -- Part 2: Alpha-3 code - edition 1"
>        [ISO639-2], ISO 639 Part 3, "Codes for the representation of
>        names of languages -- Part 3: Alpha-3 code for comprehensive
>        coverage of languages" [ISO639-3], or assignments subsequently
>        made by the relevant ISO 639 registration authorities or
>        governing standardization bodies.
>
>    3.  The subtags in the range 'qaa' through 'qtz' are reserved for
>        private use in language tags.  These subtags correspond to codes
>        reserved by ISO 639-2 for private use.  These codes MAY be used
>        for non-registered primary language subtags (instead of using
>        private use subtags following 'x-').  Please refer to Section 4.5
>        for more information on private use subtags.
>
>    4.  All four-character language subtags are reserved for possible
>        future standardization.
>
>
>
>
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>    5.  All language subtags of 5 to 8 characters in length in the IANA
>        registry were defined via the registration process in Section 3.5
>        and MAY be used to form the primary language subtag.  At the time
>        this document was created, there were no examples of this kind of
>        subtag and future registrations of this type will be discouraged:
>        primary languages are strongly RECOMMENDED for registration with
>        ISO 639, and proposals rejected by ISO 639/RA-JAC will be closely
>        scrutinized before they are registered with IANA.
>
>    6.  The single-character subtag 'x' as the primary subtag indicates
>        that the language tag consists solely of subtags whose meaning is
>        defined by private agreement.  For example, in the tag "x-fr-CH",
>        the subtags 'fr' and 'CH' SHOULD NOT be taken to represent the
>        French language or the country of Switzerland (or any other value
>        in the IANA registry) unless there is a private agreement in
>        place to do so.  See Section 4.5.
>
>    7.  The single-character subtag 'i' is used by some grandfathered
>        tags (see Section 2.2.8) such as "i-klingon" and "i-bnn".  (Other
>        grandfathered tags have a primary language subtag in their first
>        position.)
>
>    8.  Other values MUST NOT be assigned to the primary subtag except by
>        revision or update of this document.
>
>    Note: For languages that have both an ISO 639-1 two-character code
>    and a three character code assigned by either ISO 639-2 or ISO 639-3,
>    only the ISO 639-1 two-character code is defined in the IANA
>    registry.
>
>    Note: For languages that have no ISO 639-1 two-character code and for
>    which the ISO 639-2/T (Terminology) code and the ISO 639-2/B
>    (Bibliographic) codes differ, only the Terminology code is defined in
>    the IANA registry.  At the time this document was created, all
>    languages that had both kinds of three-character code were also
>    assigned a two-character code; it is expected that future assignments
>    of this nature will not occur.
>
>    Note: To avoid problems with versioning and subtag choice as
>    experienced during the transition between RFC 1766 and RFC 3066, as
>    well as the canonical nature of subtags defined by this document, the
>    ISO 639 Registration Authority Joint Advisory Committee (ISO 639/
>    RA-JAC) has included the following statement in [iso639.prin]:
>
>       "A language code already in ISO 639-2 at the point of freezing ISO
>       639-1 shall not later be added to ISO 639-1.  This is to ensure
>       consistency in usage over time, since users are directed in
>       Internet applications to employ the alpha-3 code when an alpha-2
>
>
>
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>       code for that language is not available."
>
>    In order to avoid instability in the canonical form of tags, if a
>    two-character code is added to ISO 639-1 for a language for which a
>    three-character code was already included in either ISO 639-2 or ISO
>    639-3, the two-character code MUST NOT be registered.  See
>    Section 3.4.
>
>    For example, if some content were tagged with 'haw' (Hawaiian), which
>    currently has no two-character code, the tag would not be invalidated
>    if ISO 639-1 were to assign a two-character code to the Hawaiian
>    language at a later date.
>
>    Note: An example of independent primary language subtag registration
>    might include: one of the grandfathered IANA registrations is
>    "i-enochian".  The subtag 'enochian' could be registered in the IANA
>    registry as a primary language subtag (assuming that ISO 639 does not
>    register this language first), making tags such as "enochian-AQ" and
>    "enochian-Latn" valid.
>
> 2.2.2.  Extended Language Subtags
>
>    Extended language subtags are used to identify languages that are
>    encompassed by a "macrolanguage".  ISO 639-3 defines certain
>    languages to be "macrolanguages"; that is, they are groups of very
>    closely related languages which are treated as a single language in
>    certain contexts.  In order to improve matching behavior and tagging
>    consistency, each language encompassed by a ISO 639-3 macrolanguage
>    is represented in the IANA registry using an extended language
>    subtag, provided that it is not already represented using a language
>    subtag.  The following rules apply to the extended language subtags:
>
>    1.  These subtags were defined in the IANA registry according to
>        assignments found in ISO 639 Part 3.
>
>    2.  A sequence of up to three extended language subtags MAY appear in
>        a language tag.  This sequence MUST follow the primary language
>        subtag and precede any other subtags.
>
>    3.  Each extended language subtag MUST only appear in a tag
>        immediately following the exact sequence of subtags that appears
>        in the 'Prefix' field in its registry record.
>
>    4.  Other values MUST NOT be assigned to the extended language subtag
>        except by revision or update of this document.
>
>    Extended language subtag records MUST include exactly one 'Prefix'
>    field indicating an appropriate subtag or sequence of subtags for
>
>
>
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>    that extended language subtag.
>
>    For example, the 'gan' and 'cmn' subtags represent the languages Gan
>    Chinese and Mandarin Chinese.  Each is encompassed by the
>    macrolanguage 'zh' (Chinese).  Therefore, they both have the prefix
>    "zh" in their registry records.  Consequently, Gan Chinese is
>    represented as "zh-gan" and Mandarin Chinese as "zh-cmn".  The
>    language subtag 'zh' can still be used without an extended language
>    subtag to label a resource as some unspecified variety of Chinese
>    (which in practice will usually be Mandarin, the dominant variety of
>    Chinese, but might also be some other variety).
>
>    Now suppose that, in the future, the ISO 639-3 Registration Authority
>    were to decide that Gan Chinese is actually two different closely
>    related languages: it might reclassify 'gan' as a macrolanguage and
>    introduce two new code elements.  In that case, these code elements
>    would be added to the IANA registry as extended language subtags with
>    prefixes of "zh-gan".  No change would be made to the registry record
>    for 'gan'.
>
> 2.2.3.  Script Subtag
>
>    Script subtags are used to indicate the script or writing system
>    variations that distinguish the written forms of a language or its
>    dialects.  The following rules apply to the script subtags:
>
>    1.  All four-character subtags were defined according to
>        [ISO15924]--"Codes for the representation of the names of
>        scripts": alpha-4 script codes, or subsequently assigned by the
>        ISO 15924 maintenance agency or governing standardization bodies,
>        denoting the script or writing system used in conjunction with
>        this language.
>
>    2.  Script subtags MUST immediately follow the primary language
>        subtag and all extended language subtags and MUST occur before
>        any other type of subtag described below.
>
>    3.  The script subtags 'Qaaa' through 'Qabx' are reserved for private
>        use in language tags.  These subtags correspond to codes reserved
>        by ISO 15924 for private use.  These codes MAY be used for non-
>        registered script values.  Please refer to Section 4.5 for more
>        information on private use subtags.
>
>    4.  Script subtags MUST NOT be registered using the process in
>        Section 3.5 of this document.  Variant subtags MAY be considered
>        for registration for that purpose.
>
>
>
>
>
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>    5.  There MUST be at most one script subtag in a language tag, and
>        the script subtag SHOULD be omitted when it adds no
>        distinguishing value to the tag or when the primary language
>        subtag's record includes a Suppress-Script field listing the
>        applicable script subtag.
>
>    Example: "sr-Latn" represents Serbian written using the Latin script.
>
> 2.2.4.  Region Subtag
>
>    Region subtags are used to indicate linguistic variations associated
>    with or appropriate to a specific country, territory, or region.
>    Typically, a region subtag is used to indicate regional dialects or
>    usage, or region-specific spelling conventions.  A region subtag can
>    also be used to indicate that content is expressed in a way that is
>    appropriate for use throughout a region, for instance, Spanish
>    content tailored to be useful throughout Latin America.
>
>    The following rules apply to the region subtags:
>
>    1.  Region subtags MUST follow any language, extended language, or
>        script subtags and MUST precede all other subtags.
>
>    2.  All two-character subtags following the primary subtag were
>        defined in the IANA registry according to the assignments found
>        in [ISO3166-1] ("Codes for the representation of names of
>        countries and their subdivisions -- Part 1: Country codes") using
>        the list of alpha-2 country codes, or using assignments
>        subsequently made by the ISO 3166 maintenance agency or governing
>        standardization bodies.
>
>    3.  All three-character subtags consisting of digit (numeric)
>        characters following the primary subtag were defined in the IANA
>        registry according to the assignments found in UN Standard
>        Country or Area Codes for Statistical Use [UN_M.49] or
>        assignments subsequently made by the governing standards body.
>        Note that not all of the UN M.49 codes are defined in the IANA
>        registry.  The following rules define which codes are entered
>        into the registry as valid subtags:
>
>        A.  UN numeric codes assigned to 'macro-geographical
>            (continental)' or sub-regions MUST be registered in the
>            registry.  These codes are not associated with an assigned
>            ISO 3166 alpha-2 code and represent supra-national areas,
>            usually covering more than one nation, state, province, or
>            territory.
>
>
>
>
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>        B.  UN numeric codes for 'economic groupings' or 'other
>            groupings' MUST NOT be registered in the IANA registry and
>            MUST NOT be used to form language tags.
>
>        C.  UN numeric codes for countries or areas with ambiguous ISO
>            3166 alpha-2 codes, when entered into the registry, MUST be
>            defined according to the rules in Section 3.4 and MUST be
>            used to form language tags that represent the country or
>            region for which they are defined.
>
>        D.  UN numeric codes for countries or areas for which there is an
>            associated ISO 3166 alpha-2 code in the registry MUST NOT be
>            entered into the registry and MUST NOT be used to form
>            language tags.  Note that the ISO 3166-based subtag in the
>            registry MUST actually be associated with the UN M.49 code in
>            question.
>
>        E.  UN numeric codes and ISO 3166 alpha-2 codes for countries or
>            areas listed as eligible for registration in [RFC4645] but
>            not presently registered MAY be entered into the IANA
>            registry via the process described in Section 3.5.  Once
>            registered, these codes MAY be used to form language tags.
>
>        F.  All other UN numeric codes for countries or areas that do not
>            have an associated ISO 3166 alpha-2 code MUST NOT be entered
>            into the registry and MUST NOT be used to form language tags.
>            For more information about these codes, see Section 3.4.
>
>    4.  Note: The alphanumeric codes in Appendix X of the UN document
>        MUST NOT be entered into the registry and MUST NOT be used to
>        form language tags.  (At the time this document was created,
>        these values matched the ISO 3166 alpha-2 codes.)
>
>    5.  There MUST be at most one region subtag in a language tag and the
>        region subtag MAY be omitted, as when it adds no distinguishing
>        value to the tag.
>
>    6.  The region subtags 'AA', 'QM'-'QZ', 'XA'-'XZ', and 'ZZ' are
>        reserved for private use in language tags.  These subtags
>        correspond to codes reserved by ISO 3166 for private use.  These
>        codes MAY be used for private use region subtags (instead of
>        using a private use subtag sequence).  Please refer to
>        Section 4.5 for more information on private use subtags.
>
>    "de-CH" represents German ('de') as used in Switzerland ('CH').
>
>    "sr-Latn-RS" represents Serbian ('sr') written using Latin script
>    ('Latn') as used in Serbia ('RS').
>
>
>
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>    "es-419" represents Spanish ('es') appropriate to the UN-defined
>    Latin America and Caribbean region ('419').
>
> 2.2.5.  Variant Subtags
>
>    Variant subtags are used to indicate additional, well-recognized
>    variations that define a language or its dialects that are not
>    covered by other available subtags.  The following rules apply to the
>    variant subtags:
>
>    1.  Variant subtags are not associated with any external standard.
>        Variant subtags and their meanings are defined by the
>        registration process defined in Section 3.5.
>
>    2.  Variant subtags MUST follow all of the other defined subtags, but
>        precede any extension or private use subtag sequences.
>
>    3.  More than one variant MAY be used to form the language tag.
>
>    4.  Variant subtags MUST be registered with IANA according to the
>        rules in Section 3.5 of this document before being used to form
>        language tags.  In order to distinguish variants from other types
>        of subtags, registrations MUST meet the following length and
>        content restrictions:
>
>        1.  Variant subtags that begin with a letter (a-z, A-Z) MUST be
>            at least five characters long.
>
>        2.  Variant subtags that begin with a digit (0-9) MUST be at
>            least four characters long.
>
>    Variant subtag records in the language subtag registry MAY include
>    one or more 'Prefix' fields.  The 'Prefix' indicates the language tag
>    or tags that would make a suitable prefix (with other subtags, as
>    appropriate) in forming a language tag with the variant.  That is,
>    each of the subtags in the prefix SHOULD appear before the variant.
>    For example, the subtag 'nedis' has a Prefix of "sl", making it
>    suitable to form language tags such as "sl-nedis" and "sl-IT-nedis",
>    but not suitable for use in a tag such as "zh-nedis" or "it-IT-
>    nedis".
>
>    "sl-nedis" represents the Natisone or Nadiza dialect of Slovenian.
>
>    "de-CH-1996" represents German as used in Switzerland and as written
>    using the spelling reform beginning in the year 1996 C.E.
>
>    Most variants that share a prefix are mutually exclusive.  For
>    example, the German orthographic variations '1996' and '1901' SHOULD
>
>
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>    NOT be used in the same tag, as they represent the dates of different
>    spelling reforms.  A variant that can meaningfully be used in
>    combination with another variant SHOULD include a 'Prefix' field in
>    its registry record that lists that other variant.  For example, if
>    another German variant 'example' were created that made sense to use
>    with '1996', then 'example' should include two Prefix fields: "de"
>    and "de-1996".
>
> 2.2.6.  Extension Subtags
>
>    Extensions provide a mechanism for extending language tags for use in
>    various applications.  See Section 3.7.  The following rules apply to
>    extensions:
>
>    1.   Extension subtags are separated from the other subtags defined
>         in this document by a single-character subtag ("singleton").
>         The singleton MUST be one allocated to a registration authority
>         via the mechanism described in Section 3.7 and MUST NOT be the
>         letter 'x', which is reserved for private use subtag sequences.
>
>    2.   Note: Private use subtag sequences starting with the singleton
>         subtag 'x' are described in Section 2.2.7 below.
>
>    3.   An extension MUST follow at least a primary language subtag.
>         That is, a language tag cannot begin with an extension.
>         Extensions extend language tags, they do not override or replace
>         them.  For example, "a-value" is not a well-formed language tag,
>         while "de-a-value" is.
>
>    4.   Each singleton subtag MUST appear at most one time in each tag
>         (other than as a private use subtag).  That is, singleton
>         subtags MUST NOT be repeated.  For example, the tag "en-a-bbb-a-
>         ccc" is invalid because the subtag 'a' appears twice.  Note that
>         the tag "en-a-bbb-x-a-ccc" is valid because the second
>         appearance of the singleton 'a' is in a private use sequence.
>
>    5.   Extension subtags MUST meet all of the requirements for the
>         content and format of subtags defined in this document.
>
>    6.   Extension subtags MUST meet whatever requirements are set by the
>         document that defines their singleton prefix and whatever
>         requirements are provided by the maintaining authority.
>
>    7.   Each extension subtag MUST be from two to eight characters long
>         and consist solely of letters or digits, with each subtag
>         separated by a single '-'.
>
>
>
>
>
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>    8.   Each singleton MUST be followed by at least one extension
>         subtag.  For example, the tag "tlh-a-b-foo" is invalid because
>         the first singleton 'a' is followed immediately by another
>         singleton 'b'.
>
>    9.   Extension subtags MUST follow all language, extended language,
>         script, region, and variant subtags in a tag.
>
>    10.  All subtags following the singleton and before another singleton
>         are part of the extension.  Example: In the tag "fr-a-Latn", the
>         subtag 'Latn' does not represent the script subtag 'Latn'
>         defined in the IANA Language Subtag Registry.  Its meaning is
>         defined by the extension 'a'.
>
>    11.  In the event that more than one extension appears in a single
>         tag, the tag SHOULD be canonicalized as described in
>         Section 4.4.
>
>    For example, if the prefix singleton 'r' and the shown subtags were
>    defined, then the following tag would be a valid example: "en-Latn-
>    GB-boont-r-extended-sequence-x-private"
>
> 2.2.7.  Private Use Subtags
>
>    Private use subtags are used to indicate distinctions in language
>    important in a given context by private agreement.  The following
>    rules apply to private use subtags:
>
>    1.  Private use subtags are separated from the other subtags defined
>        in this document by the reserved single-character subtag 'x'.
>
>    2.  Private use subtags MUST conform to the format and content
>        constraints defined in the ABNF for all subtags.
>
>    3.  Private use subtags MUST follow all language, extended language,
>        script, region, variant, and extension subtags in the tag.
>        Another way of saying this is that all subtags following the
>        singleton 'x' MUST be considered private use.  Example: The
>        subtag 'US' in the tag "en-x-US" is a private use subtag.
>
>    4.  A tag MAY consist entirely of private use subtags.
>
>    5.  No source is defined for private use subtags.  Use of private use
>        subtags is by private agreement only.
>
>    6.  Private use subtags are NOT RECOMMENDED where alternatives exist
>        or for general interchange.  See Section 4.5 for more information
>        on private use subtag choice.
>
>
>
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>    For example: Users who wished to utilize codes from the Ethnologue
>    publication of SIL International for language identification might
>    agree to exchange tags such as "az-Arab-x-AZE-derbend".  This example
>    contains two private use subtags.  The first is 'AZE' and the second
>    is 'derbend'.
>
> 2.2.8.  Grandfathered Registrations
>
>    Prior to RFC 4646, whole language tags were registered according to
>    the rules in RFC 1766 and/or RFC 3066.  These registered tags
>    maintain their validity.  Of those tags, those that were made
>    obsolete or redundant by the advent of RFC 4646, by this document, or
>    by subsequent registration of subtags are maintained in the registry
>    in records as "redundant" records.  Those tags that do not match the
>    'langtag' production in the ABNF in this document or that contain
>    subtags that do not individually appear in the registry are
>    maintained in the registry in records of the "grandfathered" type.
>
>    Grandfathered tags contain one or more subtags that are not defined
>    in the Language Subtag Registry (see Section 3).  Redundant tags
>    consist entirely of subtags defined above and whose independent
>    registration was superseded by [RFC4646].  For more information see
>    Section 3.8.
>
>    Some grandfathered tags are "regular" in that they match the
>    'langtag' production in Figure 1.  In some cases, these tags could
>    become redundant if their (current unregistered) subtags were to be
>    registered (as variants, for example).  In other cases, although the
>    subtags match the language tag pattern, the meaning assigned to the
>    various subtags is prohibited by rules elsewhere in this document.
>    Those tags can never become redundant.
>
>    The remaining grandfathered tags are "irregular" and do not match the
>    'langtag' production.  These are listed in the 'irregular' production
>    in Figure 1.  These grandfathered tags can never become redundant.
>    Many of these tags have been superseded by other registrations: their
>    record contains a Preferred-Value field that really ought to be used
>    to form language tags representing that value.
>
> 2.2.9.  Classes of Conformance
>
>    Implementations sometimes need to describe their capabilities with
>    regard to the rules and practices described in this document.  Tags
>    can be checked or verified in a number of ways, but two particular
>    classes of tag conformance are formally defined here.
>
>    A tag is considered "well-formed" if it conforms to the ABNF
>    (Section 2.1).  Note that irregular grandfathered tags are now listed
>
>
>
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>    in the 'irregular' production.
>
>    A tag is considered "valid" if it well-formed and it also satisfies
>    these conditions:
>
>    o  The tag is either a grandfathered tag, or all of its language,
>       extended language, script, region, and variant subtags appear in
>       the IANA language subtag registry as of the particular registry
>       date.
>
>    o  There are no duplicate singleton (extension) subtags and no
>       duplicate variant subtags.
>
>    o  For each subtag that has a 'Prefix' field in the registry, the
>       Prefix matches the language tag using Extended Filtering
>       [RFC4647].  That is, each subtag in the Prefix is present in the
>       tag and in the same order.  Furthermore, all of the Prefix's
>       subtags MUST appear before the subtag.  For example, the Prefix
>       "zh-TW" matches the tag "zh-Hant-TW".
>
>    Note that a tag's validity depends on the date of the registry used
>    to validate the tag.  A more-recent copy of the registry might
>    contain a subtag that an older version does not.
>
>    A tag is considered "valid" for a given extension (Section 3.7) (as
>    of a particular version, revision, and date) if it meets the criteria
>    for "valid" above and also satisfies this condition:
>
>       Each subtag used in the extension part of the tag is valid
>       according to the extension.
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
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> 3.  Registry Format and Maintenance
>
>    This section defines the Language Subtag Registry and the maintenance
>    and update procedures associated with it, as well as a registry for
>    extensions to language tags (Section 3.7).
>
>    The Language Subtag Registry contains a comprehensive list of all of
>    the subtags valid in language tags.  This allows implementers a
>    straightforward and reliable way to validate language tags.  The
>    Language Subtag Registry will be maintained so that, except for
>    extension subtags, it is possible to validate all of the subtags that
>    appear in a language tag under the provisions of this document or its
>    revisions or successors.  In addition, the meaning of the various
>    subtags will be unambiguous and stable over time.  (The meaning of
>    private use subtags, of course, is not defined by the IANA registry.)
>
> 3.1.  Format of the IANA Language Subtag Registry
>
>    The IANA Language Subtag Registry ("the registry") is a machine-
>    readable file in the format described in this section, plus copies of
>    the registration forms approved in accordance with the process
>    described in Section 3.5.  The existing registration forms for
>    grandfathered and redundant tags taken from RFC 3066 will be
>    maintained as part of the obsolete RFC 3066 registry.  The remaining
>    set of subtags created by either [RFC4645] or [registry-update] will
>    not have registration forms created for them.
>
> 3.1.1.  File Format
>
>    The registry consists of a series of records stored in the record-jar
>    format (described in [record-jar]).  Each record, in turn, consists
>    of a series of fields that describe the various subtags and tags.
>    The registry is a Unicode [Unicode] text file, using the UTF-8
>    [RFC3629] character encoding.
>
>    Each field can be considered a single, logical line of Unicode
>    [Unicode] characters, comprising a field-name and a field-body
>    separated by a COLON character (%x3A).  Each field is terminated by
>    the newline sequence CRLF.  The text in each field MUST be in Unicode
>    Normalization Form C (NFC).
>
>    A collection of fields forms a 'record'.  Records are separated by
>    lines containing only the sequence "%%" (%x25.25).
>
>    Although fields are logically a single line of text, each line of
>    text in the file format is limited to 72 bytes in length.  To
>    accommodate this, the field-body can be split into a multiple-line
>    representation; this is called "folding".  Folding is always done on
>
>
>
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>
>    Unicode code point boundaries (never in the middle of a multibyte
>    UTF-8 sequence) and MUST NOT occur just prior to a combining mark.
>
>    Although the file format uses the UTF-8 encoding, unless otherwise
>    indicated, fields are restricted to the printable characters from the
>    US-ASCII [ISO646] repertoire.
>
>    The format of the registry is described by the following ABNF (per
>    [RFC4234]):
>
>    registry   = record *("%%" CRLF record)
>    record     = 1*( field-name *SP ":" *SP field-body CRLF )
>    field-name = (ALPHA / DIGIT) [*(ALPHA / DIGIT / "-") (ALPHA / DIGIT)]
>    field-body = *([[*SP CRLF] 1*SP] 1*CHARS)
>    CHARS      = (%x21-10FFFF)      ; Unicode code points
>
>                       Figure 2: Registry Format ABNF
>
>    The sequence '..' (%x2E.2E) in a field-body denotes a range of
>    values.  Such a range represents all subtags of the same length that
>    are in alphabetic or numeric order within that range, including the
>    values explicitly mentioned.  For example 'a..c' denotes the values
>    'a', 'b', and 'c' and '11..13' denotes the values '11', '12', and
>    '13'.
>
>    All fields whose field-body contains a date value use the "full-date"
>    format specified in [RFC3339].  For example: "2004-06-28" represents
>    June 28, 2004, in the Gregorian calendar.
>
> 3.1.2.  Record Definitions
>
>    There are three types of records in the registry: "File-Date",
>    "Subtag", and "Tag" records.
>
>    The first record in the registry is a "File-Date" record.  This
>    record contains the single field whose field-name is "File-Date" (see
>    Figure 2).  The field-body of this record contains the last
>    modification date of this copy of the registry, making it possible to
>    compare different versions of the registry.  The registry on the IANA
>    website is the most current.  Versions with an older date than that
>    one are not up-to-date.
>
>    File-Date: 2004-06-28
>    %%
>
>                  Figure 3: Example of the File-Date Record
>
>    Subsequent records represent either subtags or tags in the registry.
>
>
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>
>    "Subtag" records contain a field with a field-name of "Subtag",
>    while, unsurprisingly, "Tag" records contain a field with a field-
>    name of "Tag".  Each of the fields in each record MUST occur no more
>    than once, unless otherwise noted below.  Each record MUST contain
>    the following fields:
>
>    o  'Type'
>
>       *  Type's field-body MUST consist of one of the following strings:
>          "language", "extlang", "script", "region", "variant",
>          "grandfathered", and "redundant" and denotes the type of tag or
>          subtag.
>
>    o  Either 'Subtag' or 'Tag'
>
>       *  Subtag's field-body contains the subtag being defined.  This
>          field MUST only appear in records of whose 'Type' has one of
>          these values: "language", "extlang", "script", "region", or
>          "variant".
>
>       *  Tag's field-body contains a complete language tag.  This field
>          MUST only appear in records whose 'Type' has one of these
>          values: "grandfathered" or "redundant".  Note that the field-
>          body will always follow the 'grandfathered' production in the
>          ABNF in Section 2.1
>
>    o  Description
>
>       *  Description's field-body contains a non-normative description
>          of the subtag or tag.
>
>    o  Added
>
>       *  Added's field-body contains the date the record was added to
>          the registry.
>
>    Each record MAY also contain the following fields:
>
>    o  Preferred-Value
>
>       *  For fields of type 'script', 'region', and 'variant',
>          'Preferred-Value' contains the subtag of the same 'Type' that
>          is preferred for forming the language tag.
>
>       *  For fields of type 'language' and 'extlang', 'Preferred-Value'
>          contains the language production (see Figure 1) that is
>          preferred when forming the language tag.  This can be simply a
>          'language' subtag, or it can be a 'language' subtag followed by
>
>
>
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>          an extended language sequence.
>
>       *  For fields of type 'grandfathered' and 'redundant', a canonical
>          mapping to a complete language tag.
>
>    o  Deprecated
>
>       *  Deprecated's field-body contains the date the record was
>          deprecated.
>
>    o  Prefix
>
>       *  Prefix's field-body contains a language tag with which this
>          subtag MAY be used to form a new language tag, perhaps with
>          other subtags as well.  The Prefix's subtags appear before the
>          subtag.  This field MUST only appear in records whose 'Type'
>          field-body is 'variant' or 'extlang'.  For example, the
>          'Prefix' for the variant 'nedis' is 'sl', meaning that the tags
>          "sl-nedis" and "sl-IT-nedis" might be appropriate while the tag
>          "is-nedis" is not.
>
>    o  Comments
>
>       *  Comments contains additional information about the subtag, as
>          deemed appropriate for understanding the registry and
>          implementing language tags using the subtag or tag.
>
>    o  Suppress-Script
>
>       *  Suppress-Script contains a script subtag that SHOULD NOT be
>          used to form language tags with the associated primary language
>          subtag.  This field MUST only appear in records whose 'Type'
>          field-body is 'language'.  See Section 4.1.
>
>    o  Macrolanguage
>
>       *  Macrolanguage contains a primary or extended language subtag
>          defined by ISO 639 as a "macrolanguage" that encompasses this
>          language subtag.  This field MUST only appear in records whose
>          'Type' field-body is 'language' or 'extlang'.
>
>    Future versions of this document might add additional fields to the
>    registry, so implementations SHOULD ignore fields found in the
>    registry that are not defined in this document.
>
>
>
>
>
>
>
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> 3.1.3.  Subtag and Tag Fields
>
>    The 'Subtag' field MUST use lowercase letters to form the subtag,
>    with two exceptions.  Subtags whose 'Type' field is 'script' (in
>    other words, subtags defined by ISO 15924) MUST use titlecase.
>    Subtags whose 'Type' field is 'region' (in other words, the non-
>    numeric region subtags defined by ISO 3166) MUST use uppercase.
>    These exceptions mirror the use of case in the underlying standards.
>
>    Each subtag in the tags contained in a 'Tag' field MUST be formatted
>    using the rules in the preceeding paragraph.  That is, all subtags
>    are lowercase except for subtags that represent script or region
>    codes.
>
> 3.1.4.  Description Field
>
>    The field 'Description' contains a description of the tag or subtag
>    in the record.  The 'Description' field MAY appear more than once per
>    record, that is, there can be multiple descriptions for a given
>    record.  The 'Description' field MAY include the full range of
>    Unicode characters.  At least one of the 'Description' fields MUST be
>    written or transcribed into the Latin script; additional
>    'Description' fields MAY also include a description in a non-Latin
>    script.  Each 'Description' field MUST be unique, both within the
>    record in which it appears and for the collection of records of the
>    same type.  Moreover, formatting variations of the same description
>    MUST NOT occur in that specific record or in any other record of the
>    same type.  For example, while the ISO 639-1 code 'fy' contains both
>    the descriptions "Western Frisian" and "Frisian, Western", only one
>    of these descriptions appears in the registry.
>
>    The 'Description' field is used for identification purposes and
>    SHOULD NOT be taken to represent the actual native name of the
>    language or variation or to be in any particular language.
>
>    For records taken from a source standard (such as ISO 639 or ISO
>    3166), the 'Description' value(s) SHOULD also be taken from the
>    source standard.  Multiple descriptions in the source standard MUST
>    be split into separate 'Description' fields.  The source standard's
>    descriptions MAY be edited, either prior to insertion or via the
>    registration process.  For fields of type 'language' or 'extlang',
>    the first 'Description' field appearing in the Registry corresponds
>    to the Reference Name assigned by ISO 639-3.  This helps facilitate
>    cross-referencing between ISO 639 and the registry.
>
>    When creating or updating a record due to the action of one of the
>    source standards, the Language Subtag Reviewer SHOULD remove
>    duplicate or redundant descriptions and MAY edit descriptions to
>
>
>
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>    correct irregularities in formatting (such as misspellings,
>    inappropriate apostrophes or other punctuation, or excessive or
>    missing spaces) prior to submitting the proposed record to the ietf-
>    languages list.
>
>    Note: Descriptions in registry entries that correspond to ISO 639,
>    ISO 15924, ISO 3166, or UN M.49 codes are intended only to indicate
>    the meaning of that identifier as defined in the source standard at
>    the time it was added to the registry.  The description does not
>    replace the content of the source standard itself.  The descriptions
>    are not intended to be the English localized names for the subtags.
>    Localization or translation of language tag and subtag descriptions
>    is out of scope of this document.
>
> 3.1.5.  Deprecated Field
>
>    The field 'Deprecated' MAY be added to any record via the maintenance
>    process described in Section 3.3 or via the registration process
>    described in Section 3.5.  Usually, the addition of a 'Deprecated'
>    field is due to the action of one of the standards bodies, such as
>    ISO 3166, withdrawing a code.  In some historical cases, it might not
>    have been possible to reconstruct the original deprecation date.  For
>    these cases, an approximate date appears in the registry.  Although
>    valid in language tags, subtags and tags with a 'Deprecated' field
>    are deprecated and validating processors SHOULD NOT generate these
>    subtags.  Note that a record that contains a 'Deprecated' field and
>    no corresponding 'Preferred-Value' field has no replacement mapping.
>
> 3.1.6.  Preferred-Value Field
>
>    The field 'Preferred-Value' contains a mapping between the record in
>    which it appears and another tag or subtag.  The value in this field
>    is strongly RECOMMENDED as the best choice to represent the value of
>    this record when selecting a language tag.  These values form three
>    groups:
>
>    1.  ISO 639 language codes that were later withdrawn in favor of
>        other codes.  These values are mostly a historical curiosity.
>
>    2.  ISO 3166 region codes that have been withdrawn in favor of a new
>        code.  This sometimes happens when a country changes its name or
>        administration in such a way that warrants a new region code.
>
>    3.  Grandfathered or redundant tags from RFC 3066.  In many cases,
>        these tags have become obsolete because the values they represent
>        were later encoded by ISO 639.
>
>    Records that contain a 'Preferred-Value' field MUST also have a
>
>
>
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>    'Deprecated' field.  This field contains a date of deprecation.
>    Thus, a language tag processor can use the registry to construct the
>    valid, non-deprecated set of subtags for a given date.  In addition,
>    for any given tag, a processor can construct the set of valid
>    language tags that correspond to that tag for all dates up to the
>    date of the registry.  The ability to do these mappings MAY be
>    beneficial to applications that are matching, selecting, for
>    filtering content based on its language tags.
>
>    Note that 'Preferred-Value' mappings in records of type 'region'
>    sometimes do not represent exactly the same meaning as the original
>    value.  There are many reasons for a country code to be changed, and
>    the effect this has on the formation of language tags will depend on
>    the nature of the change in question.
>
>    In particular, the 'Preferred-Value' field does not imply retagging
>    content that uses the affected subtag.
>
>    The field 'Preferred-Value' MUST NOT be modified once created in the
>    registry.  The field MAY be added to records according to the rules
>    in Section 3.3.
>
>    The 'Preferred-Value' field in records of type "grandfathered" and
>    "redundant" contains whole language tags that are strongly
>    RECOMMENDED for use in place of the record's value.  In many cases,
>    the mappings were created by deprecation of the tags during the
>    period before this document was adopted.  For example, the tag "no-
>    nyn" was deprecated in favor of the ISO 639-1-defined language code
>    'nn'.
>
> 3.1.7.  Prefix Field
>
>    The 'Prefix' field contains an extended language range whose subtags
>    are appropriate to use with this subtag: each of the subtags in one
>    of the subtag's Prefix fields MUST appear before the variant in a
>    valid tag.  For example, the variant subtag '1996' has a 'Prefix'
>    field of "de".  This means that tags starting with the sequence "de-"
>    are appropriate with this subtag, so "de-Latg-1996" and "de-CH-1996"
>    are both acceptable, while the tag "fr-1996" is an inappropriate
>    choice.
>
>    The field of type 'Prefix' MUST NOT be removed from any record.  The
>    field-body for this type of field MAY be modified, but only if the
>    modification broadens the meaning of the subtag.  That is, the field-
>    body can be replaced only by a prefix a prefix of itself.  For
>    example, the Prefix "be-Latn" (Belarusian, Latin script) could be
>    replaced by the Prefix "be" (Belarusian) but not by the Prefix "ru-
>    Latn" (Russian, Latin script).
>
>
>
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>    Records of type 'variant' MAY have more than one field of type
>    'Prefix'.  Additional fields of this type MAY be added to a 'variant'
>    record via the registration process.
>
>    The field-body of the 'Prefix' field MUST NOT conflict with any
>    'Prefix' already registered for a given record.  Such a conflict
>    would occur when when no valid tag could be constructed that would
>    contain the prefix, such as when when two subtags each have a
>    'Prefix' that contains the other subtag.  For example, suppose that
>    the subtag 'avariant' has the prefix "es-bvariant".  Then the subtag
>    'bvariant' cannot given the prefix 'avariant', for that would require
>    a tag of the form "es-avariant-bvariant-avariant", which would not be
>    valid.
>
>    Records of type 'extlang' MUST have _exactly_ one 'Prefix' field.
>
> 3.1.8.  Suppress-Script Field
>
>    The field 'Suppress-Script' contains a script subtag (whose record
>    appears in the registry).  The field 'Suppress-Script' MUST only
>    appear in records whose 'Type' field-body is 'language'.  This field
>    MUST NOT appear more than one time in a record.  This field indicates
>    a script used to write the overwhelming majority of documents for the
>    given language.  This script code therefore adds no distinguishing
>    information to a language tag.  This helps ensure greater
>    compatibility between the language tags generated according to the
>    rules in this document and language tags and tag processors or
>    consumers based on RFC 3066 by indicating that the script subtag
>    SHOULD NOT be used for most documents in that language.  For example,
>    virtually all Icelandic documents are written in the Latin script,
>    making the subtag 'Latn' redundant in the tag "is-Latn".
>
>    Many language subtag records do not have a Suppress-Script field.
>    The lack of a Suppress-Script might indicate that the language is
>    customarily written in more than one script or that the language is
>    not customarily written at all.  It might also mean that sufficient
>    information was not available when the record was created and thus
>    remains a candidate for future registration.
>
> 3.1.9.  Macrolanguage Field
>
>    The Macrolanguage field contains a primary or extended language
>    subtag that encompasses this subtag's language.  That is, the
>    language subtag whose record this field appears in is sometimes
>    considered to be a sub-language of the Macrolanguage.  Macrolanguage
>    values are defined by ISO 639-3 and the exact nature of the
>    relationship between the encompassed and encompassing languages
>    varies on a case-by-case basis.
>
>
>
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>    This field can be useful to applications or users when selecting
>    language tags or as additional metadata useful in matching.  The
>    Macrolanguage field can only occur in records of type 'language' or
>    'extlang'.  Only values assigned by ISO 639-3 will be considered for
>    inclusion.  Macrolanguage fields MAY be added or removed via the
>    normal registration process whenever ISO 639-3 defines new values.
>    Macrolanguages are informational, and MAY be removed or changed if
>    ISO 639-3 changes the values.
>
>    For example, the language subtags 'nb' (Norwegian Bokmal) and 'nn'
>    (Norwegian Nynorsk) each have a Macrolanguage entry of 'no'
>    (Norwegian).  For more information see Section 4.1.
>
> 3.1.10.  Comments Field
>
>    The field 'Comments' conveys additional information about the record
>    and MAY appear more than once per record.  The field-body MAY include
>    the full range of Unicode characters and is not restricted to any
>    particular script.  This field MAY be inserted or changed via the
>    registration process and no guarantee of stability is provided.  The
>    content of this field is not restricted, except by the need to
>    register the information, the suitability of the request, and by
>    reasonable practical size limitations.
>
> 3.2.  Language Subtag Reviewer
>
>    The Language Subtag Reviewer moderates the ietf-languages mailing
>    list, responds to requests for registration, and performs the other
>    registry maintenance duties described in Section 3.3.  Only the
>    Language Subtag Reviewer is permitted to request IANA to change,
>    update, or add records to the Language Subtag Registry.  The Language
>    Subtag Reviewer MAY delegate list moderation and other clerical
>    duties as needed.
>
>    The Language Subtag Reviewer is appointed by the IESG for an
>    indefinite term, subject to removal or replacement at the IESG's
>    discretion.  The IESG will solicit nominees for the position (upon
>    adoption of this document or upon a vacancy) and then solicit
>    feedback on the nominees' qualifications.  Qualified candidates
>    should be familiar with BCP 47 and its requirements; be willing to
>    fairly, responsively, and judiciously administer the registration
>    process; and be suitably informed about the issues of language
>    identification so that they can draw upon and assess the claim and
>    contributions of language experts and subtag requesters.
>
>    The subsequent performance or decisions of the Language Subtag
>    Reviewer MAY be appealed to the IESG under the same rules as other
>    IETF decisions (see [RFC2026]).  The IESG can reverse or overturn the
>
>
>
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>    decision of the Language Subtag Reviewer, provide guidance, or take
>    other appropriate actions.
>
> 3.3.  Maintenance of the Registry
>
>    Maintenance of the registry requires that as codes are assigned or
>    withdrawn by ISO 639, ISO 15924, ISO 3166, and UN M.49, the Language
>    Subtag Reviewer MUST evaluate each change and determine the
>    appropriate course of action according to the rules in this document.
>    Such updates follow the registration process described in
>    Section 3.5.  Usually the Language Subtag Reviewer will start the
>    process for the new or updated record by filling in the registration
>    form and submitting it.  If a change to one of these standards takes
>    place and the Language Subtag Reviewer does not do this in a timely
>    manner, then any interested party MAY submit the form.  Thereafter
>    the registration process continues normally.
>
>    The Language Subtag Reviewer MUST ensure that new subtags meet the
>    requirements elsewhere in this document (and most especially in
>    Section 3.4) or submit an appropriate registration form for an
>    alternate subtag as described in that section.  Each individual
>    subtag affected by a change MUST be sent to the ietf-languages list
>    with its own registration form and in a separate message.
>
> 3.4.  Stability of IANA Registry Entries
>
>    The stability of entries and their meaning in the registry is
>    critical to the long-term stability of language tags.  The rules in
>    this section guarantee that a specific language tag's meaning is
>    stable over time and will not change.
>
>    These rules specifically deal with how changes to codes (including
>    withdrawal and deprecation of codes) maintained by ISO 639, ISO
>    15924, ISO 3166, and UN M.49 are reflected in the IANA Language
>    Subtag Registry.  Assignments to the IANA Language Subtag Registry
>    MUST follow the following stability rules:
>
>    1.   Values in the fields 'Type', 'Subtag', 'Tag', 'Added',
>         'Deprecated' and 'Preferred-Value' MUST NOT be changed and are
>         guaranteed to be stable over time.
>
>    2.   Values in the 'Description' field MUST NOT be changed in a way
>         that would invalidate previously-existing tags.  They MAY be
>         broadened somewhat in scope, changed to add information, or
>         adapted to the most common modern usage.  For example, countries
>         occasionally change their official names; a historical example
>         of this would be "Upper Volta" changing to "Burkina Faso".
>
>
>
>
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>    3.   Values in the field 'Prefix' MAY be added to records of type
>         'variant' via the registration process.  If a prefix is added to
>         a variant record, 'Comment' fields SHOULD be used to explain
>         different usages with the various prefixes.
>
>    4.   Values in the field 'Prefix' in records of type 'variant' MAY be
>         modified, so long as the modifications broaden the set of
>         prefixes.  That is, a prefix MAY be replaced by one of its own
>         prefixes.  For example, the prefix "en-US" could be replaced by
>         "en", but not by the prefixes "en-Latn", "fr", or "en-US-boont".
>         If one of those prefixes were needed, a new Prefix SHOULD be
>         registered.
>
>    5.   Values in the field 'Prefix' in records of type 'extlang' MUST
>         NOT be modified.
>
>    6.   Values in the field 'Prefix' MUST NOT be removed.
>
>    7.   The field 'Comments' MAY be added, changed, modified, or removed
>         via the registration process or any of the processes or
>         considerations described in this section.
>
>    8.   The field 'Suppress-Script' MAY be added or removed via the
>         registration process.
>
>    9.   The field 'Macrolanguage' MAY be added or removed via the
>         registration process, but only in response to changes made by
>         ISO 639.  The Macrolanguage field appears whenever a language
>         has a corresponding Macrolanguage in ISO 639.  That is, the
>         macrolanguage fields in the registry exactly match those of ISO
>         639.  No other macrolanguage mappings will be considered for
>         registration.
>
>    10.  Codes assigned by ISO 639-1 that do not conflict with existing
>         two-letter primary language subtags and which have no
>         corresponding three-letter primary or extended language subtags
>         defined in the registry are entered into the IANA registry as
>         new records of type 'language'.
>
>    11.  Codes assigned by ISO 639-2 that do not conflict with existing
>         three-letter primary or extended language subtags are entered
>         into the IANA registry as new records of type 'language'.
>
>    12.  Codes assigned by ISO 639-3 that do not conflict with existing
>         three-letter primary or extended language subtags are entered
>         into the IANA registry as new records.
>
>
>
>
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>         1.  Codes that have a defined "macrolanguage" mapping at the
>             time of their registration MUST be entered into the registry
>             as records of type 'extlang' with a 'Prefix' field
>             containing the appropriate prefix tag.  They MUST also
>             include a "Macrolanguage" field in their record.
>
>         2.  Codes that represent sign languages MUST be entered into the
>             registry as record of type 'extlang' with a 'Prefix' field
>             that matches the Basic Language Range "sgn" (see Section
>             3.3.1 "Basic Filtering" in [RFC4647]).
>
>         3.  All other codes MUST be entered into the registry as records
>             of type 'language'.
>
>    13.  A record of type 'language' or 'extlang' MUST NOT be registered
>         if there exists a record of either type with the same subtag
>         value.  For example, if an 'extlang' subtag 'foo' exists in the
>         registry, all attempts to register a 'language' subtag 'foo'
>         will be rejected.
>
>    14.  Codes assigned by ISO 15924 and ISO 3166 that do not conflict
>         with existing subtags of the associated type and whose meaning
>         is not the same as an existing subtag of the same type are
>         entered into the IANA registry as new records.
>
>    15.  Codes assigned by ISO 639, ISO 15924, or ISO 3166 that are
>         withdrawn by their respective maintenance or registration
>         authority remain valid in language tags.  A 'Deprecated' field
>         containing the date of withdrawal MUST be added to the record.
>         If a new record of the same type is added that represents a
>         replacement value, then a 'Preferred-Value' field MAY also be
>         added.  The registration process MAY be used to add comments
>         about the withdrawal of the code by the respective standard.
>
>         Example  The region code 'TL' was assigned to the country
>            'Timor-Leste', replacing the code 'TP' (which was assigned to
>            'East Timor' when it was under administration by Portugal).
>            The subtag 'TP' remains valid in language tags, but its
>            record contains the a 'Preferred-Value' of 'TL' and its field
>            'Deprecated' contains the date the new code was assigned
>            ('2004-07-06').
>
>    16.  Codes assigned by ISO 639, ISO 15924, or ISO 3166 that conflict
>         with existing subtags of the associated type, including subtags
>         that are deprecated, MUST NOT be entered into the registry.  The
>         following additional considerations apply to subtag values that
>         are reassigned:
>
>
>
>
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>         A.  For ISO 639 codes, if the newly assigned code's meaning is
>             not represented by a subtag in the IANA registry, the
>             Language Subtag Reviewer, as described in Section 3.5, SHALL
>             prepare a proposal for entering in the IANA registry as soon
>             as practical a registered language subtag as an alternate
>             value for the new code.  The form of the registered language
>             subtag will be at the discretion of the Language Subtag
>             Reviewer and MUST conform to other restrictions on language
>             subtags in this document.
>
>         B.  For all subtags whose meaning is derived from an external
>             standard (that is, by ISO 639, ISO 15924, ISO 3166, or UN
>             M.49), if a new meaning is assigned to an existing code and
>             the new meaning broadens the meaning of that code, then the
>             meaning for the associated subtag MAY be changed to match.
>             The meaning of a subtag MUST NOT be narrowed, however, as
>             this can result in an unknown proportion of the existing
>             uses of a subtag becoming invalid.  Note: ISO 639
>             maintenance agency/registration authority (MA/RA) has
>             adopted a similar stability policy.
>
>         C.  For ISO 15924 codes, if the newly assigned code's meaning is
>             not represented by a subtag in the IANA registry, the
>             Language Subtag Reviewer, as described in Section 3.5, SHALL
>             prepare a proposal for entering in the IANA registry as soon
>             as practical a registered variant subtag as an alternate
>             value for the new code.  The form of the registered variant
>             subtag will be at the discretion of the Language Subtag
>             Reviewer and MUST conform to other restrictions on variant
>             subtags in this document.
>
>         D.  For ISO 3166 codes, if the newly assigned code's meaning is
>             associated with the same UN M.49 code as another 'region'
>             subtag, then the existing region subtag remains as the
>             preferred value for that region and no new entry is created.
>             A comment MAY be added to the existing region subtag
>             indicating the relationship to the new ISO 3166 code.
>
>         E.  For ISO 3166 codes, if the newly assigned code's meaning is
>             associated with a UN M.49 code that is not represented by an
>             existing region subtag, then the Language Subtag Reviewer,
>             as described in Section 3.5, SHALL prepare a proposal for
>             entering the appropriate UN M.49 country code as an entry in
>             the IANA registry.
>
>         F.  For ISO 3166 codes, if there is no associated UN numeric
>             code, then the Language Subtag Reviewer SHALL petition the
>             UN to create one.  If there is no response from the UN
>
>
>
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>             within ninety days of the request being sent, the Language
>             Subtag Reviewer SHALL prepare a proposal for entering in the
>             IANA registry as soon as practical a registered variant
>             subtag as an alternate value for the new code.  The form of
>             the registered variant subtag will be at the discretion of
>             the Language Subtag Reviewer and MUST conform to other
>             restrictions on variant subtags in this document.  This
>             situation is very unlikely to ever occur.
>
>    17.  UN M.49 has codes for both countries and areas (such as '276'
>         for Germany) and geographical regions and sub-regions (such as
>         '150' for Europe).  UN M.49 country or area codes for which
>         there is no corresponding ISO 3166 code SHOULD NOT be
>         registered, except as a surrogate for an ISO 3166 code that is
>         blocked from registration by an existing subtag.  If such a code
>         becomes necessary, then the registration authority for ISO 3166
>         SHOULD first be petitioned to assign a code to the region.  If
>         the petition for a code assignment by ISO 3166 is refused or not
>         acted on in a timely manner, the registration process described
>         in Section 3.5 MAY then be used to register the corresponding UN
>         M.49 code.  This way, UN M.49 codes remain available as the
>         value of last resort in cases where ISO 3166 reassigns a
>         deprecated value in the registry.
>
>    18.  Stability provisions apply to grandfathered tags with this
>         exception: should it be possible to compose one of the
>         grandfathered tags from registered subtags, then the field
>         'Type' in that record is changed from 'grandfathered' to
>         'redundant'.  Note that this will not affect language tags that
>         match the grandfathered tag, since these tags will now match
>         valid generative subtag sequences.  For example, this document
>         caused the ISO 639-3 code 'gan', used in the redundant tag "zh-
>         gan", to be registered as an extended language subtag.  The
>         formerly-grandfathered tag "zh-gan" became a redundant tag as a
>         result (but existing content or implementations that use "zh-
>         gan" remain valid).
>
>    Note: The redundant and grandfathered entries together are the
>    complete list of tags registered under [RFC3066].  The redundant tags
>    are those that can now be formed using the subtags defined in the
>    registry together with the rules of Section 2.2.  The grandfathered
>    entries include those that can never be legal under those same
>    provisions plus those tags that contain subtags not yet registered
>    or, perhaps, inappropriate for registration.
>
>    The set of redundant and grandfathered tags is permanent and stable:
>    new entries in this section MUST NOT be added and existing entries
>    MUST NOT be removed.  Records of type 'grandfathered' MAY have their
>
>
>
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>
>    type converted to 'redundant'; see item 12 in Section 3.6 for more
>    information.  The decision-making process about which tags were
>    initially grandfathered and which were made redundant is described in
>    [RFC4645].
>
>    RFC 3066 tags that were deprecated prior to the adoption of [RFC4646]
>    are part of the list of grandfathered tags, and their component
>    subtags were not included as registered variants (although they
>    remain eligible for registration).  For example, the tag "art-lojban"
>    was deprecated in favor of the language subtag 'jbo'.
>
> 3.5.  Registration Procedure for Subtags
>
>    The procedure given here MUST be used by anyone who wants to use a
>    subtag not currently in the IANA Language Subtag Registry.
>
>    Only subtags of type 'language' and 'variant' will be considered for
>    independent registration of new subtags.  Subtags needed for
>    stability and subtags necessary to keep the registry synchronized
>    with ISO 639, ISO 15924, ISO 3166, and UN M.49 within the limits
>    defined by this document also use this process, as described in
>    Section 3.3.  Stability provisions are described in Section 3.4.
>
>    This procedure MAY also be used to register or alter the information
>    for the 'Description', 'Comments', 'Deprecated', 'Prefix', or
>    'Suppress-Script' fields in a subtag's record as described in
>    Section 3.4.  Changes to all other fields in the IANA registry are
>    NOT permitted.
>
>    Registering a new subtag or requesting modifications to an existing
>    tag or subtag starts with the requester filling out the registration
>    form reproduced below.  Note that each response is not limited in
>    size so that the request can adequately describe the registration.
>    The fields in the "Record Requested" section SHOULD follow the
>    requirements in Section 3.1.
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
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>
>    LANGUAGE SUBTAG REGISTRATION FORM
>    1. Name of requester:
>    2. E-mail address of requester:
>    3. Record Requested:
>
>       Type:
>       Subtag:
>       Description:
>       Prefix:
>       Preferred-Value:
>       Deprecated:
>       Suppress-Script:
>       Macrolanguage:
>       Comments:
>
>    4. Intended meaning of the subtag:
>    5. Reference to published description
>       of the language (book or article):
>    6. Any other relevant information:
>
>               Figure 4: The Language Subtag Registration Form
>
>    Examples of completed registration forms can be found in Appendix C
>    or online at http://www.iana.org/assignments/lang-subtags-templates/.
>
>    The subtag registration form MUST be sent to
>    <ietf-languages@iana.org> for a two-week review period before it can
>    be submitted to IANA.  If modifications are made to the request
>    during the course of the registration process (such as corrections to
>    meet the requirements in Section 3.1) the modified form MUST also be
>    sent to <ietf-languages@iana.org> at least one week prior to
>    submission to IANA.
>
>    Whenever an entry is created or modified in the registry, the 'File-
>    Date' record at the start of the registry is updated to reflect the
>    most recent modification date in the [RFC3339] "full-date" format.
>
>    Before forwarding a new registration to IANA, the Language Subtag
>    Reviewer MUST ensure that values in the 'Subtag' field match case
>    according to the description in Section 3.1.
>
>    The ietf-languages list is an open list and can be joined by sending
>    a request to <ietf-languages-request@iana.org>.  The list can be
>    hosted by IANA or by any third party at the request of IESG.
>
>    Some fields in both the registration form as well as the registry
>    record itself permit the use of non-ASCII characters.  Registration
>    requests SHOULD use the UTF-8 encoding for consistency and clarity.
>
>
>
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>
>
>    However, since some mail clients do not support this encoding, other
>    encodings MAY be used for the registration request.  The Language
>    Subtag Reviewer is responsible for ensuring that the proper Unicode
>    characters appear in both the archived request form and the registry
>    record.  In the case of a transcription or encoding error by IANA,
>    the Language Subtag Reviewer will request that the registry be
>    repaired, providing any necessary information to assist IANA.
>
>    Variant subtags are usually registered for use with a particular
>    range of language tags.  For example, the subtag 'rozaj' is intended
>    for use with language tags that start with the primary language
>    subtag "sl", since Resian is a dialect of Slovenian.  Thus, the
>    subtag 'rozaj' would be appropriate in tags such as "sl-Latn-rozaj"
>    or "sl-IT-rozaj".  This information is stored in the 'Prefix' field
>    in the registry.  Variant registration requests SHOULD include at
>    least one 'Prefix' field in the registration form.
>
>    Extended language subtags MUST include exactly one 'Prefix' field.
>
>    The 'Prefix' field for a given registered subtag exists in the IANA
>    registry as a guide to usage.  Additional prefixes MAY be added by
>    filing an additional registration form.  In that form, the "Any other
>    relevant information:" field MUST indicate that it is the addition of
>    a prefix.
>
>    Requests to add a prefix to a variant subtag that imply a different
>    semantic meaning will probably be rejected.  For example, a request
>    to add the prefix "de" to the subtag 'nedis' so that the tag "de-
>    nedis" represented some German dialect would be rejected.  The
>    'nedis' subtag represents a particular Slovenian dialect and the
>    additional registration would change the semantic meaning assigned to
>    the subtag.  A separate subtag SHOULD be proposed instead.
>
>    The 'Description' field MUST contain a description of the tag being
>    registered written or transcribed into the Latin script; it MAY also
>    include a description in a non-Latin script.  The 'Description' field
>    is used for identification purposes and doesn't necessarily represent
>    the actual native name of the language or variation or to be in any
>    particular language.
>
>    While the 'Description' field itself is not guaranteed to be stable
>    and errata corrections MAY be undertaken from time to time, attempts
>    to provide translations or transcriptions of entries in the registry
>    itself will probably be frowned upon by the community or rejected
>    outright, as changes of this nature have an impact on the provisions
>    in Section 3.4.
>
>    When the two-week period has passed, the Language Subtag Reviewer
>
>
>
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>
>    MUST take one of the following actions:
>
>    o  Explicitly accept the request and forward the form containing the
>       record to be inserted or modified to iana@iana.org according to
>       the procedure described in Section 3.3.
>
>    o  Explicitly reject the request because of significant objections
>       raised on the list or due to problems with constraints in this
>       document (which MUST be explicitly cited).
>
>    o  Extend the review period by granting an additional two-week
>       increment to permit further discussion.  After each two-week
>       increment, the Language Subtag Reviewer MUST indicate on the list
>       whether the registration has been accepted, rejected, or extended.
>
>    Note that the Language Subtag Reviewer MAY raise objections on the
>    list if he or she so desires.  The important thing is that the
>    objection MUST be made publicly.
>
>    Sometimes the request needs to be modified as a result of discussion
>    during the review period or due to requirements in this document.
>    The applicant, Language Subtag Reviewer, or others are free to submit
>    a modified version of the completed registration form, which will be
>    considered in lieu of the original request with the explicit approval
>    of the applicant.  Such changes do not restart the two-week
>    discussion period, although an application containing the final
>    record submitted to IANA MUST appear on the list at least one week
>    prior to the Language Subtag Reviewer forwarding the record to IANA.
>    The applicant is also free to modify a rejected application with
>    additional information and submit it again; this starts a new two-
>    week comment period.
>
>    Registrations initiated due to the provisions of Section 3.3 or
>    Section 3.4 SHALL NOT be rejected altogether (since they have to
>    ultimately appear in the registry) and SHOULD be completed as quickly
>    as possible.  The review process allows list members to comment on
>    the specific information in the form and the record it contains and
>    thus help ensure that it is correct and consistent.  The Language
>    Subtag Reviewer MAY reject a specific version of the form, but MUST
>    include in the rejection a suitable replacement, extending the review
>    period as described above, until the form is in a format worthy of
>    reviewer's approval.
>
>    Decisions made by the Language Subtag Reviewer MAY be appealed to the
>    IESG [RFC2028] under the same rules as other IETF decisions
>    [RFC2026].  This includes a decision to extend the review period or
>    the failure to announce a decision in a clear and timely manner.
>
>
>
>
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>
>    The approved records appear in the Language Subtag Registry.  The
>    approved registration forms are available online under
>    http://www.iana.org/assignments/lang-subtags-templates/.
>
>    Updates or changes to existing records follow the same procedure as
>    new registrations.  The Language Subtag Reviewer decides whether
>    there is consensus to update the registration following the two week
>    review period; normally, objections by the original registrant will
>    carry extra weight in forming such a consensus.
>
>    Registrations are permanent and stable.  Once registered, subtags
>    will not be removed from the registry and will remain a valid way in
>    which to specify a specific language or variant.
>
>    Note: The purpose of the "Reference to published description" section
>    in the registration form is to aid in verifying whether a language is
>    registered or what language or language variation a particular subtag
>    refers to.  In most cases, reference to an authoritative grammar or
>    dictionary of that language will be useful; in cases where no such
>    work exists, other well-known works describing that language or in
>    that language MAY be appropriate.  The Language Subtag Reviewer
>    decides what constitutes "good enough" reference material.  This
>    requirement is not intended to exclude particular languages or
>    dialects due to the size of the speaker population or lack of a
>    standardized orthography.  Minority languages will be considered
>    equally on their own merits.
>
> 3.6.  Possibilities for Registration
>
>    Possibilities for registration of subtags or information about
>    subtags include:
>
>    o  Primary language subtags for languages not listed in ISO 639 that
>       are not variants of any listed or registered language MAY be
>       registered.  At the time this document was created, there were no
>       examples of this form of subtag.  Before attempting to register a
>       language subtag, there MUST be an attempt to register the language
>       with ISO 639.  Subtags MUST NOT be registered for languages
>       defined by codes that exist in ISO 639-1, ISO 639-2, or ISO 639-3,
>       or that are under consideration by the ISO 639 registration
>       authorities, or that have never been attempted for registration
>       with those authorities.  If ISO 639 has previously rejected a
>       language for registration, it is reasonable to assume that there
>       must be additional, very compelling evidence of need before it
>       will be registered as a primary language subtag in the IANA
>       registry (to the extent that it is very unlikely that any subtags
>       will be registered of this type).
>
>
>
>
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>
>
>    o  Dialect or other divisions or variations within a language, its
>       orthography, writing system, regional or historical usage,
>       transliteration or other transformation, or distinguishing
>       variation MAY be registered as variant subtags.  An example is the
>       'rozaj' subtag (the Resian dialect of Slovenian).
>
>    o  The addition or maintenance of fields (generally of an
>       informational nature) in Tag or Subtag records as described in
>       Section 3.1 and subject to the stability provisions in
>       Section 3.4.  This includes descriptions, comments, deprecation
>       and preferred values for obsolete or withdrawn codes, or the
>       addition of script or extlang information to primary language
>       subtags.
>
>    o  The addition of records and related field value changes necessary
>       to reflect assignments made by ISO 639, ISO 15924, ISO 3166, and
>       UN M.49 as described in Section 3.4.
>
>    Subtags proposed for registration that would cause all or part of a
>    grandfathered tag to become redundant but whose meaning conflicts
>    with or alters the meaning of the grandfathered tag MUST be rejected.
>
>    This document leaves the decision on what subtags or changes to
>    subtags are appropriate (or not) to the registration process
>    described in Section 3.5.
>
>    Note: four-character primary language subtags are reserved to allow
>    for the possibility of alpha4 codes in some future addition to the
>    ISO 639 family of standards.
>
>    ISO 639 defines a maintenance agency for additions to and changes in
>    the list of languages in ISO 639.  This agency is:
>
>    International Information Centre for Terminology (Infoterm)
>    Aichholzgasse 6/12, AT-1120
>    Wien, Austria
>    Phone: +43 1 26 75 35 Ext. 312 Fax: +43 1 216 32 72
>
>    ISO 639-2 defines a maintenance agency for additions to and changes
>    in the list of languages in ISO 639-2.  This agency is:
>
>    Library of Congress
>    Network Development and MARC Standards Office
>    Washington, D.C. 20540 USA
>    Phone: +1 202 707 6237 Fax: +1 202 707 0115
>    URL: http://www.loc.gov/standards/iso639-2
>
>    ISO 639-3 defines a maintenance agency for additions to and changes
>
>
>
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>
>
>    in the list of languages in ISO 639-3.  This agency is:
>
>    SIL International
>    ISO 639-3 Registrar
>    7500 W. Camp Wisdom Rd.
>    Dallas, TX 75236 USA
>    Phone: +1 972 708 7400, ext. 2293 Fax: +1 972 708 7546
>    Email: iso639-3@sil.org
>    URL: http://www.sil.org/iso639-3
>
>    The maintenance agency for ISO 3166 (country codes) is:
>
>    ISO 3166 Maintenance Agency
>    c/o International Organization for Standardization
>    Case postale 56
>    CH-1211 Geneva 20 Switzerland
>    Phone: +41 22 749 72 33 Fax: +41 22 749 73 49
>    URL: http://www.iso.org/iso/en/prods-services/iso3166ma/index.html
>
>    The registration authority for ISO 15924 (script codes) is:
>
>    Unicode Consortium Box 391476
>    Mountain View, CA 94039-1476, USA
>    URL: http://www.unicode.org/iso15924
>
>    The Statistics Division of the United Nations Secretariat maintains
>    the Standard Country or Area Codes for Statistical Use and can be
>    reached at:
>
>    Statistical Services Branch
>    Statistics Division
>    United Nations, Room DC2-1620
>    New York, NY 10017, USA
>
>    Fax: +1-212-963-0623
>    E-mail: statistics@un.org
>    URL: http://unstats.un.org/unsd/methods/m49/m49alpha.htm
>
> 3.7.  Extensions and Extensions Registry
>
>    Extension subtags are those introduced by single-character subtags
>    ("singletons") other than 'x'.  They are reserved for the generation
>    of identifiers that contain a language component and are compatible
>    with applications that understand language tags.
>
>    The structure and form of extensions are defined by this document so
>    that implementations can be created that are forward compatible with
>    applications that might be created using singletons in the future.
>
>
>
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>
>
>    In addition, defining a mechanism for maintaining singletons will
>    lend stability to this document by reducing the likely need for
>    future revisions or updates.
>
>    Single-character subtags are assigned by IANA using the "IETF
>    Consensus" policy defined by [RFC2434].  This policy requires the
>    development of an RFC, which SHALL define the name, purpose,
>    processes, and procedures for maintaining the subtags.  The
>    maintaining or registering authority, including name, contact email,
>    discussion list email, and URL location of the registry, MUST be
>    indicated clearly in the RFC.  The RFC MUST specify or include each
>    of the following:
>
>    o  The specification MUST reference the specific version or revision
>       of this document that governs its creation and MUST reference this
>       section of this document.
>
>    o  The specification and all subtags defined by the specification
>       MUST follow the ABNF and other rules for the formation of tags and
>       subtags as defined in this document.  In particular, it MUST
>       specify that case is not significant and that subtags MUST NOT
>       exceed eight characters in length.
>
>    o  The specification MUST specify a canonical representation.
>
>    o  The specification of valid subtags MUST be available over the
>       Internet and at no cost.
>
>    o  The specification MUST be in the public domain or available via a
>       royalty-free license acceptable to the IETF and specified in the
>       RFC.
>
>    o  The specification MUST be versioned, and each version of the
>       specification MUST be numbered, dated, and stable.
>
>    o  The specification MUST be stable.  That is, extension subtags,
>       once defined by a specification, MUST NOT be retracted or change
>       in meaning in any substantial way.
>
>    o  The specification MUST include in a separate section the
>       registration form reproduced in this section (below) to be used in
>       registering the extension upon publication as an RFC.
>
>    o  IANA MUST be informed of changes to the contact information and
>       URL for the specification.
>
>    IANA will maintain a registry of allocated single-character
>    (singleton) subtags.  This registry MUST use the record-jar format
>
>
>
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>
>    described by the ABNF in Section 3.1.  Upon publication of an
>    extension as an RFC, the maintaining authority defined in the RFC
>    MUST forward this registration form to iesg@ietf.org, who MUS
> _______________________________________________
> Ltru mailing list
> Ltru@ietf.org
> https://www1.ietf.org/mailman/listinfo/ltru
>
>


-- 
Mark

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Just to open up the discussion, the biggest problem with this version is that it uses a substantial new mechanism (extlang) which was not used in RFC 4646, and for which there is no consensus in this group to use in RFC 4646bis. We haven&#39;t removed extlang from the draft yet, but the people that want this new mechanism need to provide justification, that:
<br><ol><li>it is substantially better to have languages like &#39;cmn&#39; be put in a secondary position (eg zh-cmn-Hant-CN), rather than being primary subtags on their own (eg cmn-Hant-CN).</li><li>it is sufficiently better to warrant making the language tags more complicated by the addition of this mechanism.
<br></li></ol>Mark<br><br><div><span class="gmail_quote">On 8/24/07, <b class="gmail_sendername">Addison Phillips</b> &lt;<a href="mailto:addison@yahoo-inc.com">addison@yahoo-inc.com</a>&gt; wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Dear Editors,<br><br>Please find attached in the usual text format draft-08 of<br>draft-ietf-ltru-rfc4646bis.<br><br>Best Regards,<br><br>Addison (for the editors)<br><br>--<br>Addison Phillips<br>Globalization Architect -- Yahoo! Inc.
<br>Chair -- W3C Internationalization Core WG<br><br>Internationalization is an architecture.<br>It is not a feature.<br><br><br><br><br>Network Working Group&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A. Phillips, Ed.<br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Yahoo! Inc.
<br>Obsoletes: 4646 (if approved)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;M. Davis, Ed.<br>Intended status: Best Current&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Google<br>Practice&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; August 24, 2007
<br>Expires: February 25, 2008<br><br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Tags for Identifying Languages<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; draft-ietf-ltru-4646bis-08<br><br>Status of this Memo<br><br>&nbsp;&nbsp; By submitting this Internet-Draft, each author represents that any
<br>&nbsp;&nbsp; applicable patent or other IPR claims of which he or she is aware<br>&nbsp;&nbsp; have been or will be disclosed, and any of which he or she becomes<br>&nbsp;&nbsp; aware will be disclosed, in accordance with Section 6 of BCP 79.<br><br>
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<br><br>Copyright Notice<br><br>&nbsp;&nbsp; Copyright (C) The IETF Trust (2007).<br><br><br><br><br><br><br><br><br><br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Page 1]<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007
<br><br><br>Abstract<br><br>&nbsp;&nbsp; This document describes the structure, content, construction, and<br>&nbsp;&nbsp; semantics of language tags for use in cases where it is desirable to<br>&nbsp;&nbsp; indicate the language used in an information object.&nbsp;&nbsp;It also
<br>&nbsp;&nbsp; describes how to register values for use in language tags and the<br>&nbsp;&nbsp; creation of user-defined extensions for private interchange.<br><br><br>Table of Contents<br><br>&nbsp;&nbsp; 1.&nbsp;&nbsp;Introduction . . . . . . . . . . . . . . . . . . . . . . . . .&nbsp;&nbsp;4
<br>&nbsp;&nbsp; 2.&nbsp;&nbsp;The Language Tag . . . . . . . . . . . . . . . . . . . . . . .&nbsp;&nbsp;5<br>&nbsp;&nbsp;&nbsp;&nbsp; 2.1.&nbsp;&nbsp;Syntax . . . . . . . . . . . . . . . . . . . . . . . . . .&nbsp;&nbsp;5<br>&nbsp;&nbsp;&nbsp;&nbsp; 2.2.&nbsp;&nbsp;Language Subtag Sources and Interpretation . . . . . . . .&nbsp;&nbsp;8
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2.2.1.&nbsp;&nbsp;Primary Language Subtag&nbsp;&nbsp;. . . . . . . . . . . . . . .&nbsp;&nbsp;9<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2.2.2.&nbsp;&nbsp;Extended Language Subtags&nbsp;&nbsp;. . . . . . . . . . . . . . 11<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2.2.3.&nbsp;&nbsp;Script Subtag&nbsp;&nbsp;. . . . . . . . . . . . . . . . . . . . 12
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2.2.4.&nbsp;&nbsp;Region Subtag&nbsp;&nbsp;. . . . . . . . . . . . . . . . . . . . 13<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2.2.5.&nbsp;&nbsp;Variant Subtags&nbsp;&nbsp;. . . . . . . . . . . . . . . . . . . 15<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2.2.6.&nbsp;&nbsp;Extension Subtags&nbsp;&nbsp;. . . . . . . . . . . . . . . . . . 16
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2.2.7.&nbsp;&nbsp;Private Use Subtags&nbsp;&nbsp;. . . . . . . . . . . . . . . . . 17<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2.2.8.&nbsp;&nbsp;Grandfathered Registrations&nbsp;&nbsp;. . . . . . . . . . . . . 18<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2.2.9.&nbsp;&nbsp;Classes of Conformance . . . . . . . . . . . . . . . . 18
<br>&nbsp;&nbsp; 3.&nbsp;&nbsp;Registry Format and Maintenance&nbsp;&nbsp;. . . . . . . . . . . . . . . 20<br>&nbsp;&nbsp;&nbsp;&nbsp; 3.1.&nbsp;&nbsp;Format of the IANA Language Subtag Registry&nbsp;&nbsp;. . . . . . . 20<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3.1.1.&nbsp;&nbsp;File Format&nbsp;&nbsp;. . . . . . . . . . . . . . . . . . . . . 20
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3.1.2.&nbsp;&nbsp;Record Definitions . . . . . . . . . . . . . . . . . . 21<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3.1.3.&nbsp;&nbsp;Subtag and Tag Fields&nbsp;&nbsp;. . . . . . . . . . . . . . . . 24<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3.1.4.&nbsp;&nbsp;Description Field&nbsp;&nbsp;. . . . . . . . . . . . . . . . . . 24
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3.1.5.&nbsp;&nbsp;Deprecated Field . . . . . . . . . . . . . . . . . . . 25<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3.1.6.&nbsp;&nbsp;Preferred-Value Field&nbsp;&nbsp;. . . . . . . . . . . . . . . . 25<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3.1.7.&nbsp;&nbsp;Prefix Field . . . . . . . . . . . . . . . . . . . . . 26
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3.1.8.&nbsp;&nbsp;Suppress-Script Field&nbsp;&nbsp;. . . . . . . . . . . . . . . . 27<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3.1.9.&nbsp;&nbsp;Macrolanguage Field&nbsp;&nbsp;. . . . . . . . . . . . . . . . . 27<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3.1.10. Comments Field . . . . . . . . . . . . . . . . . . . . 28
<br>&nbsp;&nbsp;&nbsp;&nbsp; 3.2.&nbsp;&nbsp;Language Subtag Reviewer . . . . . . . . . . . . . . . . . 28<br>&nbsp;&nbsp;&nbsp;&nbsp; 3.3.&nbsp;&nbsp;Maintenance of the Registry&nbsp;&nbsp;. . . . . . . . . . . . . . . 29<br>&nbsp;&nbsp;&nbsp;&nbsp; 3.4.&nbsp;&nbsp;Stability of IANA Registry Entries . . . . . . . . . . . . 29
<br>&nbsp;&nbsp;&nbsp;&nbsp; 3.5.&nbsp;&nbsp;Registration Procedure for Subtags . . . . . . . . . . . . 34<br>&nbsp;&nbsp;&nbsp;&nbsp; 3.6.&nbsp;&nbsp;Possibilities for Registration . . . . . . . . . . . . . . 38<br>&nbsp;&nbsp;&nbsp;&nbsp; 3.7.&nbsp;&nbsp;Extensions and Extensions Registry . . . . . . . . . . . . 40
<br>&nbsp;&nbsp;&nbsp;&nbsp; 3.8.&nbsp;&nbsp;Update of the Language Subtag Registry . . . . . . . . . . 43<br>&nbsp;&nbsp; 4.&nbsp;&nbsp;Formation and Processing of Language Tags&nbsp;&nbsp;. . . . . . . . . . 44<br>&nbsp;&nbsp;&nbsp;&nbsp; 4.1.&nbsp;&nbsp;Choice of Language Tag . . . . . . . . . . . . . . . . . . 44
<br>&nbsp;&nbsp;&nbsp;&nbsp; 4.2.&nbsp;&nbsp;Meaning of the Language Tag&nbsp;&nbsp;. . . . . . . . . . . . . . . 48<br>&nbsp;&nbsp;&nbsp;&nbsp; 4.3.&nbsp;&nbsp;Length Considerations&nbsp;&nbsp;. . . . . . . . . . . . . . . . . . 50<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 4.3.1.&nbsp;&nbsp;Working with Limited Buffer Sizes&nbsp;&nbsp;. . . . . . . . . . 50
<br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Page 2]<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 4.3.2.&nbsp;&nbsp;Truncation of Language Tags&nbsp;&nbsp;. . . . . . . . . . . . . 52
<br>&nbsp;&nbsp;&nbsp;&nbsp; 4.4.&nbsp;&nbsp;Canonicalization of Language Tags&nbsp;&nbsp;. . . . . . . . . . . . 52<br>&nbsp;&nbsp;&nbsp;&nbsp; 4.5.&nbsp;&nbsp;Considerations for Private Use Subtags . . . . . . . . . . 54<br>&nbsp;&nbsp; 5.&nbsp;&nbsp;IANA Considerations&nbsp;&nbsp;. . . . . . . . . . . . . . . . . . . . . 56
<br>&nbsp;&nbsp;&nbsp;&nbsp; 5.1.&nbsp;&nbsp;Language Subtag Registry . . . . . . . . . . . . . . . . . 56<br>&nbsp;&nbsp;&nbsp;&nbsp; 5.2.&nbsp;&nbsp;Extensions Registry&nbsp;&nbsp;. . . . . . . . . . . . . . . . . . . 57<br>&nbsp;&nbsp; 6.&nbsp;&nbsp;Security Considerations&nbsp;&nbsp;. . . . . . . . . . . . . . . . . . . 58
<br>&nbsp;&nbsp; 7.&nbsp;&nbsp;Character Set Considerations . . . . . . . . . . . . . . . . . 59<br>&nbsp;&nbsp; 8.&nbsp;&nbsp;Changes from RFC 4646&nbsp;&nbsp;. . . . . . . . . . . . . . . . . . . . 60<br>&nbsp;&nbsp; 9.&nbsp;&nbsp;References . . . . . . . . . . . . . . . . . . . . . . . . . . 64
<br>&nbsp;&nbsp;&nbsp;&nbsp; 9.1.&nbsp;&nbsp;Normative References . . . . . . . . . . . . . . . . . . . 64<br>&nbsp;&nbsp;&nbsp;&nbsp; 9.2.&nbsp;&nbsp;Informative References . . . . . . . . . . . . . . . . . . 65<br>&nbsp;&nbsp; Appendix A.&nbsp;&nbsp;Acknowledgements&nbsp;&nbsp;. . . . . . . . . . . . . . . . . . 67
<br>&nbsp;&nbsp; Appendix B.&nbsp;&nbsp;Examples of Language Tags (Informative) . . . . . . . 68<br>&nbsp;&nbsp; Appendix C.&nbsp;&nbsp;Examples of Registration Forms&nbsp;&nbsp;. . . . . . . . . . . 71<br>&nbsp;&nbsp; Authors&#39; Addresses . . . . . . . . . . . . . . . . . . . . . . . . 73
<br>&nbsp;&nbsp; Intellectual Property and Copyright Statements . . . . . . . . . . 74<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Page 3]
<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>1.&nbsp;&nbsp;Introduction<br><br>&nbsp;&nbsp; Human beings on our planet have, past and present, used a number of<br>&nbsp;&nbsp; languages.&nbsp;&nbsp;There are many reasons why one would want to identify the
<br>&nbsp;&nbsp; language used when presenting or requesting information.<br><br>&nbsp;&nbsp; A user&#39;s language preferences often need to be identified so that<br>&nbsp;&nbsp; appropriate processing can be applied.&nbsp;&nbsp;For example, the user&#39;s<br>
&nbsp;&nbsp; language preferences in a Web browser can be used to select Web pages<br>&nbsp;&nbsp; appropriately.&nbsp;&nbsp;Language preferences can also be used to select among<br>&nbsp;&nbsp; tools (such as dictionaries) to assist in the processing or<br>&nbsp;&nbsp; understanding of content in different languages.
<br><br>&nbsp;&nbsp; In addition, knowledge about the particular language used by some<br>&nbsp;&nbsp; piece of information content might be useful or even required by some<br>&nbsp;&nbsp; types of processing; for example, spell-checking, computer-<br>
&nbsp;&nbsp; synthesized speech, Braille transcription, or high-quality print<br>&nbsp;&nbsp; renderings.<br><br>&nbsp;&nbsp; One means of indicating the language used is by labeling the<br>&nbsp;&nbsp; information content with an identifier or &quot;tag&quot;.&nbsp;&nbsp;These tags can be
<br>&nbsp;&nbsp; used to specify user preferences when selecting information content,<br>&nbsp;&nbsp; or for labeling additional attributes of content and associated<br>&nbsp;&nbsp; resources.<br><br>&nbsp;&nbsp; Tags can also be used to indicate additional language attributes of
<br>&nbsp;&nbsp; content.&nbsp;&nbsp;For example, indicating specific information about the<br>&nbsp;&nbsp; dialect, writing system, or orthography used in a document or<br>&nbsp;&nbsp; resource may enable the user to obtain information in a form that<br>&nbsp;&nbsp; they can understand, or it can be important in processing or
<br>&nbsp;&nbsp; rendering the given content into an appropriate form or style.<br><br>&nbsp;&nbsp; This document specifies a particular identifier mechanism (the<br>&nbsp;&nbsp; language tag) and a registration function for values to be used to<br>&nbsp;&nbsp; form tags.&nbsp;&nbsp;It also defines a mechanism for private use values and
<br>&nbsp;&nbsp; future extension.<br><br>&nbsp;&nbsp; This document replaces [RFC4646], which replaced [RFC3066] and its<br>&nbsp;&nbsp; predecessor [RFC1766].&nbsp;&nbsp;For a list of changes in this document, see<br>&nbsp;&nbsp; Section 8.<br><br>&nbsp;&nbsp; The key words &quot;MUST&quot;, &quot;MUST NOT&quot;, &quot;REQUIRED&quot;, &quot;SHALL&quot;, &quot;SHALL NOT&quot;,
<br>&nbsp;&nbsp; &quot;SHOULD&quot;, &quot;SHOULD NOT&quot;, &quot;RECOMMENDED&quot;, &quot;MAY&quot;, and &quot;OPTIONAL&quot; in this<br>&nbsp;&nbsp; document are to be interpreted as described in [RFC2119].<br><br><br><br><br><br><br><br>
Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Page 4]<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>2.&nbsp;&nbsp;The Language Tag<br><br>&nbsp;&nbsp; Language tags are used to help identify languages, whether spoken,
<br>&nbsp;&nbsp; written, signed, or otherwise signaled, for the purpose of<br>&nbsp;&nbsp; communication.&nbsp;&nbsp;This includes constructed and artificial languages,<br>&nbsp;&nbsp; but excludes languages not intended primarily for human<br>&nbsp;&nbsp; communication, such as programming languages.
<br><br>2.1.&nbsp;&nbsp;Syntax<br><br>&nbsp;&nbsp; The language tag is composed of one or more parts, known as<br>&nbsp;&nbsp; &quot;subtags&quot;.&nbsp;&nbsp;Each subtag consists of a sequence of alphanumeric<br>&nbsp;&nbsp; characters.&nbsp;&nbsp;Subtags are distinguished and separated from one another
<br>&nbsp;&nbsp; by a hyphen (&quot;-&quot;, ABNF [RFC4234] %x2D).&nbsp;&nbsp;A language tag consists of a<br>&nbsp;&nbsp; &quot;primary language&quot; subtag and a (possibly empty) series of subsequent<br>&nbsp;&nbsp; subtags, each of which refines or narrows the range of languages
<br>&nbsp;&nbsp; identified by the overall tag.<br><br>&nbsp;&nbsp; Usually, each type of subtag is distinguished by length, position in<br>&nbsp;&nbsp; the tag, and content: subtags can be recognized solely by these<br>&nbsp;&nbsp; features.&nbsp;&nbsp;The only exception to this is a fixed list of
<br>&nbsp;&nbsp; grandfathered tags registered under RFC 3066 [RFC3066].&nbsp;&nbsp;This makes<br>&nbsp;&nbsp; it possible to construct a parser that can extract and assign some<br>&nbsp;&nbsp; semantic information to the subtags, even if the specific subtag<br>
&nbsp;&nbsp; values are not recognized.&nbsp;&nbsp;Thus, a parser need not have an up-to-<br>&nbsp;&nbsp; date copy (or any copy at all) of the subtag registry to perform most<br>&nbsp;&nbsp; searching and matching operations.<br><br><br><br><br><br><br><br><br>
<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Page 5]<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br>
<br><br>&nbsp;&nbsp; The syntax of the language tag in ABNF [RFC4234] is:<br><br>&nbsp;&nbsp; Language-Tag&nbsp;&nbsp;= langtag<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; / privateuse&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ; private use tag<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; / irregular&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;; tags grandfathered by rule
<br><br>&nbsp;&nbsp; langtag&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; = (language<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&quot;-&quot; script]<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&quot;-&quot; region]<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*(&quot;-&quot; variant)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*(&quot;-&quot; extension)
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&quot;-&quot; privateuse])<br><br>&nbsp;&nbsp; language&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;= (2*3ALPHA [ extlang ]) ; shortest ISO 639 code<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; / 4ALPHA&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ; reserved for future use<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; / 5*8ALPHA&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ; registered language subtag
<br><br>&nbsp;&nbsp; extlang&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; = *3(&quot;-&quot; 3ALPHA)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ; specific ISO 639-3 codes<br><br>&nbsp;&nbsp; script&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;= 4ALPHA&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ; ISO 15924 code<br><br>&nbsp;&nbsp; region&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;= 2ALPHA&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ; ISO 3166 code<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; / 3DIGIT&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ; UN M.49 code<br><br>&nbsp;&nbsp; variant&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; = 5*8alphanum&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;; registered variants<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; / (DIGIT 3alphanum)<br><br>&nbsp;&nbsp; extension&nbsp;&nbsp;&nbsp;&nbsp; = singleton 1*(&quot;-&quot; (2*8alphanum))
<br><br>&nbsp;&nbsp; singleton&nbsp;&nbsp;&nbsp;&nbsp; = %x41-57 / %x59-5A / %x61-77 / %x79-7A / DIGIT<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ; &quot;a&quot;-&quot;w&quot; / &quot;y&quot;-&quot;z&quot; / &quot;A&quot;-&quot;W&quot; / &quot;Y&quot;-&quot;Z&quot; / &quot;0&quot;-&quot;9&quot;
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ; Single alphanumerics<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ; &quot;x&quot; is reserved for private use<br><br>&nbsp;&nbsp; privateuse&nbsp;&nbsp;&nbsp;&nbsp;= &quot;x&quot; 1*(&quot;-&quot; (1*8alphanum))<br><br>&nbsp;&nbsp; irregular&nbsp;&nbsp;&nbsp;&nbsp; = &quot;en-GB-oed&quot; / &quot;i-ami&quot; / &quot;i-bnn&quot; / &quot;i-default&quot;
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; / &quot;i-enochian&quot; / &quot;i-hak&quot; / &quot;i-klingon&quot; / &quot;i-lux&quot;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; / &quot;i-mingo&quot; / &quot;i-navajo&quot; / &quot;i-pwn&quot; / &quot;i-tao&quot;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; / &quot;i-tay&quot; / &quot;i-tsu&quot; / &quot;sgn-BE-fr&quot; / &quot;sgn-BE-nl&quot;
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; / &quot;sgn-CH-de&quot;<br><br>&nbsp;&nbsp; alphanum&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;= (ALPHA / DIGIT)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ; letters and numbers<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Figure 1: Language Tag ABNF<br><br>&nbsp;&nbsp; All subtags have a maximum length of eight characters and whitespace
<br>&nbsp;&nbsp; is not permitted in a language tag.&nbsp;&nbsp;There is a subtlety in the ABNF<br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Page 6]<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007
<br><br><br>&nbsp;&nbsp; production &#39;variant&#39;: variants starting with a digit MAY be four<br>&nbsp;&nbsp; characters long, while those starting with a letter MUST be at least<br>&nbsp;&nbsp; five characters long.&nbsp;&nbsp;For examples of language tags, see Appendix B.
<br><br>&nbsp;&nbsp; Note Well: the ABNF syntax does not distinguish between upper and<br>&nbsp;&nbsp; lowercase.&nbsp;&nbsp;The appearance of upper and lowercase letters in the<br>&nbsp;&nbsp; varous ABNF productions above do not affect how implementations<br>
&nbsp;&nbsp; interpret tags.&nbsp;&nbsp;That is, the tag &quot;I-AMI&quot; matches the item &quot;i-ami&quot; in<br>&nbsp;&nbsp; the &#39;irregular&#39; production.&nbsp;&nbsp;At all times, the tags and their<br>&nbsp;&nbsp; subtags, including private use and extensions, are to be treated as
<br>&nbsp;&nbsp; case insensitive: there exist conventions for the capitalization of<br>&nbsp;&nbsp; some of the subtags, but these MUST NOT be taken to carry meaning.<br><br>&nbsp;&nbsp; For example:<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;[ISO639-1] recommends that language codes be written in lowercase
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(&#39;mn&#39; Mongolian).<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;[ISO3166-1] recommends that country codes be capitalized (&#39;MN&#39;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Mongolia).<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;[ISO15924] recommends that script codes use lowercase with the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;initial letter capitalized (&#39;Cyrl&#39; Cyrillic).
<br><br>&nbsp;&nbsp; However, in the tags defined by this document, the uppercase US-ASCII<br>&nbsp;&nbsp; letters in the range &#39;A&#39; through &#39;Z&#39; are considered equivalent and<br>&nbsp;&nbsp; mapped directly to their US-ASCII lowercase equivalents in the range
<br>&nbsp;&nbsp; &#39;a&#39; through &#39;z&#39;.&nbsp;&nbsp;Thus, the tag &quot;mn-Cyrl-MN&quot; is not distinct from<br>&nbsp;&nbsp; &quot;MN-cYRL-mn&quot; or &quot;mN-cYrL-Mn&quot; (or any other combination), and each of<br>&nbsp;&nbsp; these variations conveys the same meaning: Mongolian written in the
<br>&nbsp;&nbsp; Cyrillic script as used in Mongolia.<br><br>&nbsp;&nbsp; Although case distinctions do not carry meaning in language tags,<br>&nbsp;&nbsp; consistent formatting and presentation of the tags will aid users.<br>&nbsp;&nbsp; The format of the tags and subtags in the registry is RECOMMENDED.
<br>&nbsp;&nbsp; In this format, all non-initial two-letter subtags are uppercase, all<br>&nbsp;&nbsp; non-initial four-letter subtags are titlecase, and all other subtags<br>&nbsp;&nbsp; are lowercase.<br><br>&nbsp;&nbsp; Note that although [RFC4234] refers to octets, the language tags
<br>&nbsp;&nbsp; described in this document are sequences of characters from the US-<br>&nbsp;&nbsp; ASCII [ISO646] repertoire.&nbsp;&nbsp;Language tags MAY be used in documents<br>&nbsp;&nbsp; and applications that use other encodings, so long as these encompass
<br>&nbsp;&nbsp; the US-ASCII repertoire.&nbsp;&nbsp;An example of this would be an XML document<br>&nbsp;&nbsp; that uses the UTF-16LE [RFC2781] encoding of [Unicode].<br><br><br><br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Page 7]
<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>2.2.&nbsp;&nbsp;Language Subtag Sources and Interpretation<br><br>&nbsp;&nbsp; The namespace of language tags and their subtags is administered by<br>
&nbsp;&nbsp; the Internet Assigned Numbers Authority (IANA) [RFC2860] according to<br>&nbsp;&nbsp; the rules in Section 5 of this document.&nbsp;&nbsp;The Language Subtag<br>&nbsp;&nbsp; Registry maintained by IANA is the source for valid subtags: other<br>&nbsp;&nbsp; standards referenced in this section provide the source material for
<br>&nbsp;&nbsp; that registry.<br><br>&nbsp;&nbsp; Terminology used in this document:<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;Tag or tags refers to a complete language tag, such as<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&quot;sr-Latn-RS&quot; or &quot;az-Arab-IR&quot;.&nbsp;&nbsp;Examples of tags in this document
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;are enclosed in double-quotes (&quot;en-US&quot;).<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;Subtag refers to a specific section of a tag, delimited by hyphen,<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;such as the subtag &#39;Hant&#39; in &quot;zh-Hant-CN&quot;.&nbsp;&nbsp;Examples of subtags in
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;this document are enclosed in single quotes (&#39;Hant&#39;).<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;Code or codes refers to values defined in external standards (and<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;which are used as subtags in this document).&nbsp;&nbsp;For example, &#39;Hant&#39;
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;is an [ISO15924] script code that was used to define the &#39;Hant&#39;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;script subtag for use in a language tag.&nbsp;&nbsp;Examples of codes in<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;this document are enclosed in single quotes (&#39;en&#39;, &#39;Hant&#39;).
<br><br>&nbsp;&nbsp; The definitions in this section apply to the various subtags within<br>&nbsp;&nbsp; the language tags defined by this document, excepting those<br>&nbsp;&nbsp; &quot;grandfathered&quot; tags defined in Section 2.2.8.<br><br>&nbsp;&nbsp; Language tags are designed so that each subtag type has unique length
<br>&nbsp;&nbsp; and content restrictions.&nbsp;&nbsp;These make identification of the subtag&#39;s<br>&nbsp;&nbsp; type possible, even if the content of the subtag itself is<br>&nbsp;&nbsp; unrecognized.&nbsp;&nbsp;This allows tags to be parsed and processed without<br>
&nbsp;&nbsp; reference to the latest version of the underlying standards or the<br>&nbsp;&nbsp; IANA registry and makes the associated exception handling when<br>&nbsp;&nbsp; parsing tags simpler.<br><br>&nbsp;&nbsp; Subtags in the IANA registry that do not come from an underlying
<br>&nbsp;&nbsp; standard can only appear in specific positions in a tag.<br>&nbsp;&nbsp; Specifically, they can only occur as primary language subtags or as<br>&nbsp;&nbsp; variant subtags.<br><br>&nbsp;&nbsp; Note that sequences of private use and extension subtags MUST occur
<br>&nbsp;&nbsp; at the end of the sequence of subtags and MUST NOT be interspersed<br>&nbsp;&nbsp; with subtags defined elsewhere in this document.<br><br>&nbsp;&nbsp; Single-letter and single-digit subtags are reserved for current or<br>&nbsp;&nbsp; future use.&nbsp;&nbsp;These include the following current uses:
<br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Page 8]<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>&nbsp;&nbsp; o&nbsp;&nbsp;The single-letter subtag &#39;x&#39; is reserved to introduce a sequence
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;of private use subtags.&nbsp;&nbsp;The interpretation of any private use<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;subtags is defined solely by private agreement and is not defined<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;by the rules in this section or in any standard or registry<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;defined in this document.
<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;All other single-letter subtags are reserved to introduce<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;standardized extension subtag sequences as described in<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section 3.7.<br><br>&nbsp;&nbsp; The single-letter subtag &#39;i&#39; is used by some grandfathered tags, such
<br>&nbsp;&nbsp; as &quot;i-default&quot;, where it always appears in the first position and<br>&nbsp;&nbsp; cannot be confused with an extension.<br><br>2.2.1.&nbsp;&nbsp;Primary Language Subtag<br><br>&nbsp;&nbsp; The primary language subtag is the first subtag in a language tag
<br>&nbsp;&nbsp; (with the exception of private use and certain grandfathered tags)<br>&nbsp;&nbsp; and cannot be omitted.&nbsp;&nbsp;The following rules apply to the primary<br>&nbsp;&nbsp; language subtag:<br><br>&nbsp;&nbsp; 1.&nbsp;&nbsp;All two-character primary language subtags were defined in the
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; IANA registry according to the assignments found in the standard<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ISO 639 Part 1, &quot;ISO 639-1:2002, Codes for the representation of<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; names of languages -- Part 1: Alpha-2 code&quot; [ISO639-1], or using
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; assignments subsequently made by the ISO 639-1 registration<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; authority (RA) or governing standardization bodies.<br><br>&nbsp;&nbsp; 2.&nbsp;&nbsp;All three-character primary language subtags were defined in the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; IANA registry according to the assignments found in either ISO
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 639 Part 2, &quot;ISO 639-2:1998 - Codes for the representation of<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; names of languages -- Part 2: Alpha-3 code - edition 1&quot;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [ISO639-2], ISO 639 Part 3, &quot;Codes for the representation of
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; names of languages -- Part 3: Alpha-3 code for comprehensive<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; coverage of languages&quot; [ISO639-3], or assignments subsequently<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; made by the relevant ISO 639 registration authorities or<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; governing standardization bodies.
<br><br>&nbsp;&nbsp; 3.&nbsp;&nbsp;The subtags in the range &#39;qaa&#39; through &#39;qtz&#39; are reserved for<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; private use in language tags.&nbsp;&nbsp;These subtags correspond to codes<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; reserved by ISO 639-2 for private use.&nbsp;&nbsp;These codes MAY be used
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; for non-registered primary language subtags (instead of using<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; private use subtags following &#39;x-&#39;).&nbsp;&nbsp;Please refer to Section 4.5<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; for more information on private use subtags.<br><br>&nbsp;&nbsp; 4.&nbsp;&nbsp;All four-character language subtags are reserved for possible
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; future standardization.<br><br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Page 9]<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>
&nbsp;&nbsp; 5.&nbsp;&nbsp;All language subtags of 5 to 8 characters in length in the IANA<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; registry were defined via the registration process in Section 3.5<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; and MAY be used to form the primary language subtag.&nbsp;&nbsp;At the time
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; this document was created, there were no examples of this kind of<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; subtag and future registrations of this type will be discouraged:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; primary languages are strongly RECOMMENDED for registration with
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ISO 639, and proposals rejected by ISO 639/RA-JAC will be closely<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; scrutinized before they are registered with IANA.<br><br>&nbsp;&nbsp; 6.&nbsp;&nbsp;The single-character subtag &#39;x&#39; as the primary subtag indicates
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; that the language tag consists solely of subtags whose meaning is<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; defined by private agreement.&nbsp;&nbsp;For example, in the tag &quot;x-fr-CH&quot;,<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; the subtags &#39;fr&#39; and &#39;CH&#39; SHOULD NOT be taken to represent the
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; French language or the country of Switzerland (or any other value<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; in the IANA registry) unless there is a private agreement in<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; place to do so.&nbsp;&nbsp;See Section 4.5.<br><br>&nbsp;&nbsp; 7.&nbsp;&nbsp;The single-character subtag &#39;i&#39; is used by some grandfathered
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; tags (see Section 2.2.8) such as &quot;i-klingon&quot; and &quot;i-bnn&quot;.&nbsp;&nbsp;(Other<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; grandfathered tags have a primary language subtag in their first<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; position.)<br><br>&nbsp;&nbsp; 8.&nbsp;&nbsp;Other values MUST NOT be assigned to the primary subtag except by
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; revision or update of this document.<br><br>&nbsp;&nbsp; Note: For languages that have both an ISO 639-1 two-character code<br>&nbsp;&nbsp; and a three character code assigned by either ISO 639-2 or ISO 639-3,<br>&nbsp;&nbsp; only the ISO 639-1 two-character code is defined in the IANA
<br>&nbsp;&nbsp; registry.<br><br>&nbsp;&nbsp; Note: For languages that have no ISO 639-1 two-character code and for<br>&nbsp;&nbsp; which the ISO 639-2/T (Terminology) code and the ISO 639-2/B<br>&nbsp;&nbsp; (Bibliographic) codes differ, only the Terminology code is defined in
<br>&nbsp;&nbsp; the IANA registry.&nbsp;&nbsp;At the time this document was created, all<br>&nbsp;&nbsp; languages that had both kinds of three-character code were also<br>&nbsp;&nbsp; assigned a two-character code; it is expected that future assignments<br>&nbsp;&nbsp; of this nature will not occur.
<br><br>&nbsp;&nbsp; Note: To avoid problems with versioning and subtag choice as<br>&nbsp;&nbsp; experienced during the transition between RFC 1766 and RFC 3066, as<br>&nbsp;&nbsp; well as the canonical nature of subtags defined by this document, the
<br>&nbsp;&nbsp; ISO 639 Registration Authority Joint Advisory Committee (ISO 639/<br>&nbsp;&nbsp; RA-JAC) has included the following statement in [iso639.prin]:<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&quot;A language code already in ISO 639-2 at the point of freezing ISO
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;639-1 shall not later be added to ISO 639-1.&nbsp;&nbsp;This is to ensure<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;consistency in usage over time, since users are directed in<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Internet applications to employ the alpha-3 code when an alpha-2<br><br>
<br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 10]<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;code for that language is not available.&quot;
<br><br>&nbsp;&nbsp; In order to avoid instability in the canonical form of tags, if a<br>&nbsp;&nbsp; two-character code is added to ISO 639-1 for a language for which a<br>&nbsp;&nbsp; three-character code was already included in either ISO 639-2 or ISO
<br>&nbsp;&nbsp; 639-3, the two-character code MUST NOT be registered.&nbsp;&nbsp;See<br>&nbsp;&nbsp; Section 3.4.<br><br>&nbsp;&nbsp; For example, if some content were tagged with &#39;haw&#39; (Hawaiian), which<br>&nbsp;&nbsp; currently has no two-character code, the tag would not be invalidated
<br>&nbsp;&nbsp; if ISO 639-1 were to assign a two-character code to the Hawaiian<br>&nbsp;&nbsp; language at a later date.<br><br>&nbsp;&nbsp; Note: An example of independent primary language subtag registration<br>&nbsp;&nbsp; might include: one of the grandfathered IANA registrations is
<br>&nbsp;&nbsp; &quot;i-enochian&quot;.&nbsp;&nbsp;The subtag &#39;enochian&#39; could be registered in the IANA<br>&nbsp;&nbsp; registry as a primary language subtag (assuming that ISO 639 does not<br>&nbsp;&nbsp; register this language first), making tags such as &quot;enochian-AQ&quot; and
<br>&nbsp;&nbsp; &quot;enochian-Latn&quot; valid.<br><br>2.2.2.&nbsp;&nbsp;Extended Language Subtags<br><br>&nbsp;&nbsp; Extended language subtags are used to identify languages that are<br>&nbsp;&nbsp; encompassed by a &quot;macrolanguage&quot;.&nbsp;&nbsp;ISO 639-3 defines certain
<br>&nbsp;&nbsp; languages to be &quot;macrolanguages&quot;; that is, they are groups of very<br>&nbsp;&nbsp; closely related languages which are treated as a single language in<br>&nbsp;&nbsp; certain contexts.&nbsp;&nbsp;In order to improve matching behavior and tagging
<br>&nbsp;&nbsp; consistency, each language encompassed by a ISO 639-3 macrolanguage<br>&nbsp;&nbsp; is represented in the IANA registry using an extended language<br>&nbsp;&nbsp; subtag, provided that it is not already represented using a language<br>
&nbsp;&nbsp; subtag.&nbsp;&nbsp;The following rules apply to the extended language subtags:<br><br>&nbsp;&nbsp; 1.&nbsp;&nbsp;These subtags were defined in the IANA registry according to<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; assignments found in ISO 639 Part 3.<br><br>&nbsp;&nbsp; 2.&nbsp;&nbsp;A sequence of up to three extended language subtags MAY appear in
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; a language tag.&nbsp;&nbsp;This sequence MUST follow the primary language<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; subtag and precede any other subtags.<br><br>&nbsp;&nbsp; 3.&nbsp;&nbsp;Each extended language subtag MUST only appear in a tag<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; immediately following the exact sequence of subtags that appears
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; in the &#39;Prefix&#39; field in its registry record.<br><br>&nbsp;&nbsp; 4.&nbsp;&nbsp;Other values MUST NOT be assigned to the extended language subtag<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; except by revision or update of this document.<br><br>&nbsp;&nbsp; Extended language subtag records MUST include exactly one &#39;Prefix&#39;
<br>&nbsp;&nbsp; field indicating an appropriate subtag or sequence of subtags for<br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 11]<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007
<br><br><br>&nbsp;&nbsp; that extended language subtag.<br><br>&nbsp;&nbsp; For example, the &#39;gan&#39; and &#39;cmn&#39; subtags represent the languages Gan<br>&nbsp;&nbsp; Chinese and Mandarin Chinese.&nbsp;&nbsp;Each is encompassed by the<br>&nbsp;&nbsp; macrolanguage &#39;zh&#39; (Chinese).&nbsp;&nbsp;Therefore, they both have the prefix
<br>&nbsp;&nbsp; &quot;zh&quot; in their registry records.&nbsp;&nbsp;Consequently, Gan Chinese is<br>&nbsp;&nbsp; represented as &quot;zh-gan&quot; and Mandarin Chinese as &quot;zh-cmn&quot;.&nbsp;&nbsp;The<br>&nbsp;&nbsp; language subtag &#39;zh&#39; can still be used without an extended language
<br>&nbsp;&nbsp; subtag to label a resource as some unspecified variety of Chinese<br>&nbsp;&nbsp; (which in practice will usually be Mandarin, the dominant variety of<br>&nbsp;&nbsp; Chinese, but might also be some other variety).<br><br>&nbsp;&nbsp; Now suppose that, in the future, the ISO 639-3 Registration Authority
<br>&nbsp;&nbsp; were to decide that Gan Chinese is actually two different closely<br>&nbsp;&nbsp; related languages: it might reclassify &#39;gan&#39; as a macrolanguage and<br>&nbsp;&nbsp; introduce two new code elements.&nbsp;&nbsp;In that case, these code elements
<br>&nbsp;&nbsp; would be added to the IANA registry as extended language subtags with<br>&nbsp;&nbsp; prefixes of &quot;zh-gan&quot;.&nbsp;&nbsp;No change would be made to the registry record<br>&nbsp;&nbsp; for &#39;gan&#39;.<br><br>2.2.3.&nbsp;&nbsp;Script Subtag<br><br>
&nbsp;&nbsp; Script subtags are used to indicate the script or writing system<br>&nbsp;&nbsp; variations that distinguish the written forms of a language or its<br>&nbsp;&nbsp; dialects.&nbsp;&nbsp;The following rules apply to the script subtags:<br><br>&nbsp;&nbsp; 1.&nbsp;&nbsp;All four-character subtags were defined according to
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [ISO15924]--&quot;Codes for the representation of the names of<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; scripts&quot;: alpha-4 script codes, or subsequently assigned by the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ISO 15924 maintenance agency or governing standardization bodies,
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; denoting the script or writing system used in conjunction with<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; this language.<br><br>&nbsp;&nbsp; 2.&nbsp;&nbsp;Script subtags MUST immediately follow the primary language<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; subtag and all extended language subtags and MUST occur before
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; any other type of subtag described below.<br><br>&nbsp;&nbsp; 3.&nbsp;&nbsp;The script subtags &#39;Qaaa&#39; through &#39;Qabx&#39; are reserved for private<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; use in language tags.&nbsp;&nbsp;These subtags correspond to codes reserved
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; by ISO 15924 for private use.&nbsp;&nbsp;These codes MAY be used for non-<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; registered script values.&nbsp;&nbsp;Please refer to Section 4.5 for more<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; information on private use subtags.<br><br>&nbsp;&nbsp; 4.&nbsp;&nbsp;Script subtags MUST NOT be registered using the process in
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Section 3.5 of this document.&nbsp;&nbsp;Variant subtags MAY be considered<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; for registration for that purpose.<br><br><br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 12]<br>
<br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>&nbsp;&nbsp; 5.&nbsp;&nbsp;There MUST be at most one script subtag in a language tag, and<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; the script subtag SHOULD be omitted when it adds no<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; distinguishing value to the tag or when the primary language<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; subtag&#39;s record includes a Suppress-Script field listing the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; applicable script subtag.<br><br>&nbsp;&nbsp; Example: &quot;sr-Latn&quot; represents Serbian written using the Latin script.
<br><br>2.2.4.&nbsp;&nbsp;Region Subtag<br><br>&nbsp;&nbsp; Region subtags are used to indicate linguistic variations associated<br>&nbsp;&nbsp; with or appropriate to a specific country, territory, or region.<br>&nbsp;&nbsp; Typically, a region subtag is used to indicate regional dialects or
<br>&nbsp;&nbsp; usage, or region-specific spelling conventions.&nbsp;&nbsp;A region subtag can<br>&nbsp;&nbsp; also be used to indicate that content is expressed in a way that is<br>&nbsp;&nbsp; appropriate for use throughout a region, for instance, Spanish<br>
&nbsp;&nbsp; content tailored to be useful throughout Latin America.<br><br>&nbsp;&nbsp; The following rules apply to the region subtags:<br><br>&nbsp;&nbsp; 1.&nbsp;&nbsp;Region subtags MUST follow any language, extended language, or<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; script subtags and MUST precede all other subtags.
<br><br>&nbsp;&nbsp; 2.&nbsp;&nbsp;All two-character subtags following the primary subtag were<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; defined in the IANA registry according to the assignments found<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; in [ISO3166-1] (&quot;Codes for the representation of names of
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; countries and their subdivisions -- Part 1: Country codes&quot;) using<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; the list of alpha-2 country codes, or using assignments<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; subsequently made by the ISO 3166 maintenance agency or governing
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; standardization bodies.<br><br>&nbsp;&nbsp; 3.&nbsp;&nbsp;All three-character subtags consisting of digit (numeric)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; characters following the primary subtag were defined in the IANA<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; registry according to the assignments found in UN Standard
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Country or Area Codes for Statistical Use [UN_M.49] or<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; assignments subsequently made by the governing standards body.<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Note that not all of the UN M.49 codes are defined in the IANA<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; registry.&nbsp;&nbsp;The following rules define which codes are entered
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; into the registry as valid subtags:<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A.&nbsp;&nbsp;UN numeric codes assigned to &#39;macro-geographical<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (continental)&#39; or sub-regions MUST be registered in the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; registry.&nbsp;&nbsp;These codes are not associated with an assigned
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ISO 3166 alpha-2 code and represent supra-national areas,<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; usually covering more than one nation, state, province, or<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; territory.<br><br><br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 13]
<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; B.&nbsp;&nbsp;UN numeric codes for &#39;economic groupings&#39; or &#39;other<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; groupings&#39; MUST NOT be registered in the IANA registry and
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; MUST NOT be used to form language tags.<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; C.&nbsp;&nbsp;UN numeric codes for countries or areas with ambiguous ISO<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3166 alpha-2 codes, when entered into the registry, MUST be<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; defined according to the rules in Section 
3.4 and MUST be<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; used to form language tags that represent the country or<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; region for which they are defined.<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D.&nbsp;&nbsp;UN numeric codes for countries or areas for which there is an<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; associated ISO 3166 alpha-2 code in the registry MUST NOT be
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; entered into the registry and MUST NOT be used to form<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; language tags.&nbsp;&nbsp;Note that the ISO 3166-based subtag in the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; registry MUST actually be associated with the UN M.49 code in<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; question.<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; E.&nbsp;&nbsp;UN numeric codes and ISO 3166 alpha-2 codes for countries or<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; areas listed as eligible for registration in [RFC4645] but<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; not presently registered MAY be entered into the IANA
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; registry via the process described in Section 3.5.&nbsp;&nbsp;Once<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; registered, these codes MAY be used to form language tags.<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; F.&nbsp;&nbsp;All other UN numeric codes for countries or areas that do not
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; have an associated ISO 3166 alpha-2 code MUST NOT be entered<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; into the registry and MUST NOT be used to form language tags.<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; For more information about these codes, see Section 3.4
.<br><br>&nbsp;&nbsp; 4.&nbsp;&nbsp;Note: The alphanumeric codes in Appendix X of the UN document<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; MUST NOT be entered into the registry and MUST NOT be used to<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; form language tags.&nbsp;&nbsp;(At the time this document was created,<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; these values matched the ISO 3166 alpha-2 codes.)<br><br>&nbsp;&nbsp; 5.&nbsp;&nbsp;There MUST be at most one region subtag in a language tag and the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; region subtag MAY be omitted, as when it adds no distinguishing<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; value to the tag.
<br><br>&nbsp;&nbsp; 6.&nbsp;&nbsp;The region subtags &#39;AA&#39;, &#39;QM&#39;-&#39;QZ&#39;, &#39;XA&#39;-&#39;XZ&#39;, and &#39;ZZ&#39; are<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; reserved for private use in language tags.&nbsp;&nbsp;These subtags<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; correspond to codes reserved by ISO 3166 for private use.&nbsp;&nbsp;These
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; codes MAY be used for private use region subtags (instead of<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; using a private use subtag sequence).&nbsp;&nbsp;Please refer to<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Section 4.5 for more information on private use subtags.<br><br>&nbsp;&nbsp; &quot;de-CH&quot; represents German (&#39;de&#39;) as used in Switzerland (&#39;CH&#39;).
<br><br>&nbsp;&nbsp; &quot;sr-Latn-RS&quot; represents Serbian (&#39;sr&#39;) written using Latin script<br>&nbsp;&nbsp; (&#39;Latn&#39;) as used in Serbia (&#39;RS&#39;).<br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 14]
<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>&nbsp;&nbsp; &quot;es-419&quot; represents Spanish (&#39;es&#39;) appropriate to the UN-defined<br>&nbsp;&nbsp; Latin America and Caribbean region (&#39;419&#39;).
<br><br>2.2.5.&nbsp;&nbsp;Variant Subtags<br><br>&nbsp;&nbsp; Variant subtags are used to indicate additional, well-recognized<br>&nbsp;&nbsp; variations that define a language or its dialects that are not<br>&nbsp;&nbsp; covered by other available subtags.&nbsp;&nbsp;The following rules apply to the
<br>&nbsp;&nbsp; variant subtags:<br><br>&nbsp;&nbsp; 1.&nbsp;&nbsp;Variant subtags are not associated with any external standard.<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Variant subtags and their meanings are defined by the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; registration process defined in Section 3.5.<br>
<br>&nbsp;&nbsp; 2.&nbsp;&nbsp;Variant subtags MUST follow all of the other defined subtags, but<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; precede any extension or private use subtag sequences.<br><br>&nbsp;&nbsp; 3.&nbsp;&nbsp;More than one variant MAY be used to form the language tag.<br><br>
&nbsp;&nbsp; 4.&nbsp;&nbsp;Variant subtags MUST be registered with IANA according to the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; rules in Section 3.5 of this document before being used to form<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; language tags.&nbsp;&nbsp;In order to distinguish variants from other types<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; of subtags, registrations MUST meet the following length and<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; content restrictions:<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1.&nbsp;&nbsp;Variant subtags that begin with a letter (a-z, A-Z) MUST be<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at least five characters long.
<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2.&nbsp;&nbsp;Variant subtags that begin with a digit (0-9) MUST be at<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; least four characters long.<br><br>&nbsp;&nbsp; Variant subtag records in the language subtag registry MAY include<br>&nbsp;&nbsp; one or more &#39;Prefix&#39; fields.&nbsp;&nbsp;The &#39;Prefix&#39; indicates the language tag
<br>&nbsp;&nbsp; or tags that would make a suitable prefix (with other subtags, as<br>&nbsp;&nbsp; appropriate) in forming a language tag with the variant.&nbsp;&nbsp;That is,<br>&nbsp;&nbsp; each of the subtags in the prefix SHOULD appear before the variant.<br>
&nbsp;&nbsp; For example, the subtag &#39;nedis&#39; has a Prefix of &quot;sl&quot;, making it<br>&nbsp;&nbsp; suitable to form language tags such as &quot;sl-nedis&quot; and &quot;sl-IT-nedis&quot;,<br>&nbsp;&nbsp; but not suitable for use in a tag such as &quot;zh-nedis&quot; or &quot;it-IT-
<br>&nbsp;&nbsp; nedis&quot;.<br><br>&nbsp;&nbsp; &quot;sl-nedis&quot; represents the Natisone or Nadiza dialect of Slovenian.<br><br>&nbsp;&nbsp; &quot;de-CH-1996&quot; represents German as used in Switzerland and as written<br>&nbsp;&nbsp; using the spelling reform beginning in the year 1996 
C.E.<br><br>&nbsp;&nbsp; Most variants that share a prefix are mutually exclusive.&nbsp;&nbsp;For<br>&nbsp;&nbsp; example, the German orthographic variations &#39;1996&#39; and &#39;1901&#39; SHOULD<br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 15]
<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>&nbsp;&nbsp; NOT be used in the same tag, as they represent the dates of different<br>&nbsp;&nbsp; spelling reforms.&nbsp;&nbsp;A variant that can meaningfully be used in
<br>&nbsp;&nbsp; combination with another variant SHOULD include a &#39;Prefix&#39; field in<br>&nbsp;&nbsp; its registry record that lists that other variant.&nbsp;&nbsp;For example, if<br>&nbsp;&nbsp; another German variant &#39;example&#39; were created that made sense to use
<br>&nbsp;&nbsp; with &#39;1996&#39;, then &#39;example&#39; should include two Prefix fields: &quot;de&quot;<br>&nbsp;&nbsp; and &quot;de-1996&quot;.<br><br>2.2.6.&nbsp;&nbsp;Extension Subtags<br><br>&nbsp;&nbsp; Extensions provide a mechanism for extending language tags for use in
<br>&nbsp;&nbsp; various applications.&nbsp;&nbsp;See Section 3.7.&nbsp;&nbsp;The following rules apply to<br>&nbsp;&nbsp; extensions:<br><br>&nbsp;&nbsp; 1.&nbsp;&nbsp; Extension subtags are separated from the other subtags defined<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;in this document by a single-character subtag (&quot;singleton&quot;).
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The singleton MUST be one allocated to a registration authority<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;via the mechanism described in Section 3.7 and MUST NOT be the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;letter &#39;x&#39;, which is reserved for private use subtag sequences.
<br><br>&nbsp;&nbsp; 2.&nbsp;&nbsp; Note: Private use subtag sequences starting with the singleton<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;subtag &#39;x&#39; are described in Section 2.2.7 below.<br><br>&nbsp;&nbsp; 3.&nbsp;&nbsp; An extension MUST follow at least a primary language subtag.
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;That is, a language tag cannot begin with an extension.<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Extensions extend language tags, they do not override or replace<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;them.&nbsp;&nbsp;For example, &quot;a-value&quot; is not a well-formed language tag,
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;while &quot;de-a-value&quot; is.<br><br>&nbsp;&nbsp; 4.&nbsp;&nbsp; Each singleton subtag MUST appear at most one time in each tag<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(other than as a private use subtag).&nbsp;&nbsp;That is, singleton<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;subtags MUST NOT be repeated.&nbsp;&nbsp;For example, the tag &quot;en-a-bbb-a-
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ccc&quot; is invalid because the subtag &#39;a&#39; appears twice.&nbsp;&nbsp;Note that<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;the tag &quot;en-a-bbb-x-a-ccc&quot; is valid because the second<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;appearance of the singleton &#39;a&#39; is in a private use sequence.
<br><br>&nbsp;&nbsp; 5.&nbsp;&nbsp; Extension subtags MUST meet all of the requirements for the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;content and format of subtags defined in this document.<br><br>&nbsp;&nbsp; 6.&nbsp;&nbsp; Extension subtags MUST meet whatever requirements are set by the
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;document that defines their singleton prefix and whatever<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;requirements are provided by the maintaining authority.<br><br>&nbsp;&nbsp; 7.&nbsp;&nbsp; Each extension subtag MUST be from two to eight characters long<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;and consist solely of letters or digits, with each subtag
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;separated by a single &#39;-&#39;.<br><br><br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 16]<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007
<br><br><br>&nbsp;&nbsp; 8.&nbsp;&nbsp; Each singleton MUST be followed by at least one extension<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;subtag.&nbsp;&nbsp;For example, the tag &quot;tlh-a-b-foo&quot; is invalid because<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;the first singleton &#39;a&#39; is followed immediately by another
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;singleton &#39;b&#39;.<br><br>&nbsp;&nbsp; 9.&nbsp;&nbsp; Extension subtags MUST follow all language, extended language,<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;script, region, and variant subtags in a tag.<br><br>&nbsp;&nbsp; 10.&nbsp;&nbsp;All subtags following the singleton and before another singleton
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;are part of the extension.&nbsp;&nbsp;Example: In the tag &quot;fr-a-Latn&quot;, the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;subtag &#39;Latn&#39; does not represent the script subtag &#39;Latn&#39;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;defined in the IANA Language Subtag Registry.&nbsp;&nbsp;Its meaning is
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;defined by the extension &#39;a&#39;.<br><br>&nbsp;&nbsp; 11.&nbsp;&nbsp;In the event that more than one extension appears in a single<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;tag, the tag SHOULD be canonicalized as described in<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section 4.4.<br><br>
&nbsp;&nbsp; For example, if the prefix singleton &#39;r&#39; and the shown subtags were<br>&nbsp;&nbsp; defined, then the following tag would be a valid example: &quot;en-Latn-<br>&nbsp;&nbsp; GB-boont-r-extended-sequence-x-private&quot;<br><br>2.2.7
.&nbsp;&nbsp;Private Use Subtags<br><br>&nbsp;&nbsp; Private use subtags are used to indicate distinctions in language<br>&nbsp;&nbsp; important in a given context by private agreement.&nbsp;&nbsp;The following<br>&nbsp;&nbsp; rules apply to private use subtags:<br><br>&nbsp;&nbsp; 1.&nbsp;&nbsp;Private use subtags are separated from the other subtags defined
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; in this document by the reserved single-character subtag &#39;x&#39;.<br><br>&nbsp;&nbsp; 2.&nbsp;&nbsp;Private use subtags MUST conform to the format and content<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; constraints defined in the ABNF for all subtags.<br><br>&nbsp;&nbsp; 3.&nbsp;&nbsp;Private use subtags MUST follow all language, extended language,
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; script, region, variant, and extension subtags in the tag.<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Another way of saying this is that all subtags following the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; singleton &#39;x&#39; MUST be considered private use.&nbsp;&nbsp;Example: The<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; subtag &#39;US&#39; in the tag &quot;en-x-US&quot; is a private use subtag.<br><br>&nbsp;&nbsp; 4.&nbsp;&nbsp;A tag MAY consist entirely of private use subtags.<br><br>&nbsp;&nbsp; 5.&nbsp;&nbsp;No source is defined for private use subtags.&nbsp;&nbsp;Use of private use
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; subtags is by private agreement only.<br><br>&nbsp;&nbsp; 6.&nbsp;&nbsp;Private use subtags are NOT RECOMMENDED where alternatives exist<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; or for general interchange.&nbsp;&nbsp;See Section 4.5 for more information<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; on private use subtag choice.
<br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 17]<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>&nbsp;&nbsp; For example: Users who wished to utilize codes from the Ethnologue
<br>&nbsp;&nbsp; publication of SIL International for language identification might<br>&nbsp;&nbsp; agree to exchange tags such as &quot;az-Arab-x-AZE-derbend&quot;.&nbsp;&nbsp;This example<br>&nbsp;&nbsp; contains two private use subtags.&nbsp;&nbsp;The first is &#39;AZE&#39; and the second
<br>&nbsp;&nbsp; is &#39;derbend&#39;.<br><br>2.2.8.&nbsp;&nbsp;Grandfathered Registrations<br><br>&nbsp;&nbsp; Prior to RFC 4646, whole language tags were registered according to<br>&nbsp;&nbsp; the rules in RFC 1766 and/or RFC 3066.&nbsp;&nbsp;These registered tags<br>
&nbsp;&nbsp; maintain their validity.&nbsp;&nbsp;Of those tags, those that were made<br>&nbsp;&nbsp; obsolete or redundant by the advent of RFC 4646, by this document, or<br>&nbsp;&nbsp; by subsequent registration of subtags are maintained in the registry<br>&nbsp;&nbsp; in records as &quot;redundant&quot; records.&nbsp;&nbsp;Those tags that do not match the
<br>&nbsp;&nbsp; &#39;langtag&#39; production in the ABNF in this document or that contain<br>&nbsp;&nbsp; subtags that do not individually appear in the registry are<br>&nbsp;&nbsp; maintained in the registry in records of the &quot;grandfathered&quot; type.
<br><br>&nbsp;&nbsp; Grandfathered tags contain one or more subtags that are not defined<br>&nbsp;&nbsp; in the Language Subtag Registry (see Section 3).&nbsp;&nbsp;Redundant tags<br>&nbsp;&nbsp; consist entirely of subtags defined above and whose independent<br>
&nbsp;&nbsp; registration was superseded by [RFC4646].&nbsp;&nbsp;For more information see<br>&nbsp;&nbsp; Section 3.8.<br><br>&nbsp;&nbsp; Some grandfathered tags are &quot;regular&quot; in that they match the<br>&nbsp;&nbsp; &#39;langtag&#39; production in Figure 1.&nbsp;&nbsp;In some cases, these tags could
<br>&nbsp;&nbsp; become redundant if their (current unregistered) subtags were to be<br>&nbsp;&nbsp; registered (as variants, for example).&nbsp;&nbsp;In other cases, although the<br>&nbsp;&nbsp; subtags match the language tag pattern, the meaning assigned to the
<br>&nbsp;&nbsp; various subtags is prohibited by rules elsewhere in this document.<br>&nbsp;&nbsp; Those tags can never become redundant.<br><br>&nbsp;&nbsp; The remaining grandfathered tags are &quot;irregular&quot; and do not match the<br>&nbsp;&nbsp; &#39;langtag&#39; production.&nbsp;&nbsp;These are listed in the &#39;irregular&#39; production
<br>&nbsp;&nbsp; in Figure 1.&nbsp;&nbsp;These grandfathered tags can never become redundant.<br>&nbsp;&nbsp; Many of these tags have been superseded by other registrations: their<br>&nbsp;&nbsp; record contains a Preferred-Value field that really ought to be used
<br>&nbsp;&nbsp; to form language tags representing that value.<br><br>2.2.9.&nbsp;&nbsp;Classes of Conformance<br><br>&nbsp;&nbsp; Implementations sometimes need to describe their capabilities with<br>&nbsp;&nbsp; regard to the rules and practices described in this document.&nbsp;&nbsp;Tags
<br>&nbsp;&nbsp; can be checked or verified in a number of ways, but two particular<br>&nbsp;&nbsp; classes of tag conformance are formally defined here.<br><br>&nbsp;&nbsp; A tag is considered &quot;well-formed&quot; if it conforms to the ABNF<br>&nbsp;&nbsp; (Section 
2.1).&nbsp;&nbsp;Note that irregular grandfathered tags are now listed<br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 18]<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007
<br><br><br>&nbsp;&nbsp; in the &#39;irregular&#39; production.<br><br>&nbsp;&nbsp; A tag is considered &quot;valid&quot; if it well-formed and it also satisfies<br>&nbsp;&nbsp; these conditions:<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;The tag is either a grandfathered tag, or all of its language,
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;extended language, script, region, and variant subtags appear in<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;the IANA language subtag registry as of the particular registry<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;date.<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;There are no duplicate singleton (extension) subtags and no
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;duplicate variant subtags.<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;For each subtag that has a &#39;Prefix&#39; field in the registry, the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Prefix matches the language tag using Extended Filtering<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[RFC4647].&nbsp;&nbsp;That is, each subtag in the Prefix is present in the
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;tag and in the same order.&nbsp;&nbsp;Furthermore, all of the Prefix&#39;s<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;subtags MUST appear before the subtag.&nbsp;&nbsp;For example, the Prefix<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&quot;zh-TW&quot; matches the tag &quot;zh-Hant-TW&quot;.<br><br>
&nbsp;&nbsp; Note that a tag&#39;s validity depends on the date of the registry used<br>&nbsp;&nbsp; to validate the tag.&nbsp;&nbsp;A more-recent copy of the registry might<br>&nbsp;&nbsp; contain a subtag that an older version does not.<br><br>&nbsp;&nbsp; A tag is considered &quot;valid&quot; for a given extension (Section 
3.7) (as<br>&nbsp;&nbsp; of a particular version, revision, and date) if it meets the criteria<br>&nbsp;&nbsp; for &quot;valid&quot; above and also satisfies this condition:<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Each subtag used in the extension part of the tag is valid
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;according to the extension.<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 19]<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007
<br><br><br>3.&nbsp;&nbsp;Registry Format and Maintenance<br><br>&nbsp;&nbsp; This section defines the Language Subtag Registry and the maintenance<br>&nbsp;&nbsp; and update procedures associated with it, as well as a registry for<br>&nbsp;&nbsp; extensions to language tags (Section 
3.7).<br><br>&nbsp;&nbsp; The Language Subtag Registry contains a comprehensive list of all of<br>&nbsp;&nbsp; the subtags valid in language tags.&nbsp;&nbsp;This allows implementers a<br>&nbsp;&nbsp; straightforward and reliable way to validate language tags.&nbsp;&nbsp;The
<br>&nbsp;&nbsp; Language Subtag Registry will be maintained so that, except for<br>&nbsp;&nbsp; extension subtags, it is possible to validate all of the subtags that<br>&nbsp;&nbsp; appear in a language tag under the provisions of this document or its
<br>&nbsp;&nbsp; revisions or successors.&nbsp;&nbsp;In addition, the meaning of the various<br>&nbsp;&nbsp; subtags will be unambiguous and stable over time.&nbsp;&nbsp;(The meaning of<br>&nbsp;&nbsp; private use subtags, of course, is not defined by the IANA registry.)
<br><br>3.1.&nbsp;&nbsp;Format of the IANA Language Subtag Registry<br><br>&nbsp;&nbsp; The IANA Language Subtag Registry (&quot;the registry&quot;) is a machine-<br>&nbsp;&nbsp; readable file in the format described in this section, plus copies of<br>
&nbsp;&nbsp; the registration forms approved in accordance with the process<br>&nbsp;&nbsp; described in Section 3.5.&nbsp;&nbsp;The existing registration forms for<br>&nbsp;&nbsp; grandfathered and redundant tags taken from RFC 3066 will be<br>&nbsp;&nbsp; maintained as part of the obsolete RFC 3066 registry.&nbsp;&nbsp;The remaining
<br>&nbsp;&nbsp; set of subtags created by either [RFC4645] or [registry-update] will<br>&nbsp;&nbsp; not have registration forms created for them.<br><br>3.1.1.&nbsp;&nbsp;File Format<br><br>&nbsp;&nbsp; The registry consists of a series of records stored in the record-jar
<br>&nbsp;&nbsp; format (described in [record-jar]).&nbsp;&nbsp;Each record, in turn, consists<br>&nbsp;&nbsp; of a series of fields that describe the various subtags and tags.<br>&nbsp;&nbsp; The registry is a Unicode [Unicode] text file, using the UTF-8<br>&nbsp;&nbsp; [RFC3629] character encoding.
<br><br>&nbsp;&nbsp; Each field can be considered a single, logical line of Unicode<br>&nbsp;&nbsp; [Unicode] characters, comprising a field-name and a field-body<br>&nbsp;&nbsp; separated by a COLON character (%x3A).&nbsp;&nbsp;Each field is terminated by<br>&nbsp;&nbsp; the newline sequence CRLF.&nbsp;&nbsp;The text in each field MUST be in Unicode
<br>&nbsp;&nbsp; Normalization Form C (NFC).<br><br>&nbsp;&nbsp; A collection of fields forms a &#39;record&#39;.&nbsp;&nbsp;Records are separated by<br>&nbsp;&nbsp; lines containing only the sequence &quot;%%&quot; (%x25.25).<br><br>&nbsp;&nbsp; Although fields are logically a single line of text, each line of
<br>&nbsp;&nbsp; text in the file format is limited to 72 bytes in length.&nbsp;&nbsp;To<br>&nbsp;&nbsp; accommodate this, the field-body can be split into a multiple-line<br>&nbsp;&nbsp; representation; this is called &quot;folding&quot;.&nbsp;&nbsp;Folding is always done on
<br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 20]<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>&nbsp;&nbsp; Unicode code point boundaries (never in the middle of a multibyte
<br>&nbsp;&nbsp; UTF-8 sequence) and MUST NOT occur just prior to a combining mark.<br><br>&nbsp;&nbsp; Although the file format uses the UTF-8 encoding, unless otherwise<br>&nbsp;&nbsp; indicated, fields are restricted to the printable characters from the
<br>&nbsp;&nbsp; US-ASCII [ISO646] repertoire.<br><br>&nbsp;&nbsp; The format of the registry is described by the following ABNF (per<br>&nbsp;&nbsp; [RFC4234]):<br><br>&nbsp;&nbsp; registry&nbsp;&nbsp; = record *(&quot;%%&quot; CRLF record)<br>&nbsp;&nbsp; record&nbsp;&nbsp;&nbsp;&nbsp; = 1*( field-name *SP &quot;:&quot; *SP field-body CRLF )
<br>&nbsp;&nbsp; field-name = (ALPHA / DIGIT) [*(ALPHA / DIGIT / &quot;-&quot;) (ALPHA / DIGIT)]<br>&nbsp;&nbsp; field-body = *([[*SP CRLF] 1*SP] 1*CHARS)<br>&nbsp;&nbsp; CHARS&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;= (%x21-10FFFF)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;; Unicode code points<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Figure 2: Registry Format ABNF
<br><br>&nbsp;&nbsp; The sequence &#39;..&#39; (%x2E.2E) in a field-body denotes a range of<br>&nbsp;&nbsp; values.&nbsp;&nbsp;Such a range represents all subtags of the same length that<br>&nbsp;&nbsp; are in alphabetic or numeric order within that range, including the
<br>&nbsp;&nbsp; values explicitly mentioned.&nbsp;&nbsp;For example &#39;a..c&#39; denotes the values<br>&nbsp;&nbsp; &#39;a&#39;, &#39;b&#39;, and &#39;c&#39; and &#39;11..13&#39; denotes the values &#39;11&#39;, &#39;12&#39;, and<br>&nbsp;&nbsp; &#39;13&#39;.
<br><br>&nbsp;&nbsp; All fields whose field-body contains a date value use the &quot;full-date&quot;<br>&nbsp;&nbsp; format specified in [RFC3339].&nbsp;&nbsp;For example: &quot;2004-06-28&quot; represents<br>&nbsp;&nbsp; June 28, 2004, in the Gregorian calendar.
<br><br>3.1.2.&nbsp;&nbsp;Record Definitions<br><br>&nbsp;&nbsp; There are three types of records in the registry: &quot;File-Date&quot;,<br>&nbsp;&nbsp; &quot;Subtag&quot;, and &quot;Tag&quot; records.<br><br>&nbsp;&nbsp; The first record in the registry is a &quot;File-Date&quot; record.&nbsp;&nbsp;This
<br>&nbsp;&nbsp; record contains the single field whose field-name is &quot;File-Date&quot; (see<br>&nbsp;&nbsp; Figure 2).&nbsp;&nbsp;The field-body of this record contains the last<br>&nbsp;&nbsp; modification date of this copy of the registry, making it possible to
<br>&nbsp;&nbsp; compare different versions of the registry.&nbsp;&nbsp;The registry on the IANA<br>&nbsp;&nbsp; website is the most current.&nbsp;&nbsp;Versions with an older date than that<br>&nbsp;&nbsp; one are not up-to-date.<br><br>&nbsp;&nbsp; File-Date: 2004-06-28<br>&nbsp;&nbsp; %%
<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Figure 3: Example of the File-Date Record<br><br>&nbsp;&nbsp; Subsequent records represent either subtags or tags in the registry.<br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 21]
<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>&nbsp;&nbsp; &quot;Subtag&quot; records contain a field with a field-name of &quot;Subtag&quot;,<br>&nbsp;&nbsp; while, unsurprisingly, &quot;Tag&quot; records contain a field with a field-
<br>&nbsp;&nbsp; name of &quot;Tag&quot;.&nbsp;&nbsp;Each of the fields in each record MUST occur no more<br>&nbsp;&nbsp; than once, unless otherwise noted below.&nbsp;&nbsp;Each record MUST contain<br>&nbsp;&nbsp; the following fields:<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;&#39;Type&#39;<br><br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;&nbsp;Type&#39;s field-body MUST consist of one of the following strings:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &quot;language&quot;, &quot;extlang&quot;, &quot;script&quot;, &quot;region&quot;, &quot;variant&quot;,<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &quot;grandfathered&quot;, and &quot;redundant&quot; and denotes the type of tag or
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; subtag.<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;Either &#39;Subtag&#39; or &#39;Tag&#39;<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;&nbsp;Subtag&#39;s field-body contains the subtag being defined.&nbsp;&nbsp;This<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; field MUST only appear in records of whose &#39;Type&#39; has one of
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; these values: &quot;language&quot;, &quot;extlang&quot;, &quot;script&quot;, &quot;region&quot;, or<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &quot;variant&quot;.<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;&nbsp;Tag&#39;s field-body contains a complete language tag.&nbsp;&nbsp;This field
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; MUST only appear in records whose &#39;Type&#39; has one of these<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; values: &quot;grandfathered&quot; or &quot;redundant&quot;.&nbsp;&nbsp;Note that the field-<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; body will always follow the &#39;grandfathered&#39; production in the
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ABNF in Section 2.1<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;Description<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;&nbsp;Description&#39;s field-body contains a non-normative description<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; of the subtag or tag.<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;Added<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;&nbsp;Added&#39;s field-body contains the date the record was added to
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; the registry.<br><br>&nbsp;&nbsp; Each record MAY also contain the following fields:<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;Preferred-Value<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;&nbsp;For fields of type &#39;script&#39;, &#39;region&#39;, and &#39;variant&#39;,<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#39;Preferred-Value&#39; contains the subtag of the same &#39;Type&#39; that
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; is preferred for forming the language tag.<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;&nbsp;For fields of type &#39;language&#39; and &#39;extlang&#39;, &#39;Preferred-Value&#39;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; contains the language production (see Figure 1) that is
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; preferred when forming the language tag.&nbsp;&nbsp;This can be simply a<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#39;language&#39; subtag, or it can be a &#39;language&#39; subtag followed by<br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 22]
<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; an extended language sequence.<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;&nbsp;For fields of type &#39;grandfathered&#39; and &#39;redundant&#39;, a canonical
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; mapping to a complete language tag.<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;Deprecated<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;&nbsp;Deprecated&#39;s field-body contains the date the record was<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; deprecated.<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;Prefix<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;&nbsp;Prefix&#39;s field-body contains a language tag with which this
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; subtag MAY be used to form a new language tag, perhaps with<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; other subtags as well.&nbsp;&nbsp;The Prefix&#39;s subtags appear before the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; subtag.&nbsp;&nbsp;This field MUST only appear in records whose &#39;Type&#39;
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; field-body is &#39;variant&#39; or &#39;extlang&#39;.&nbsp;&nbsp;For example, the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#39;Prefix&#39; for the variant &#39;nedis&#39; is &#39;sl&#39;, meaning that the tags<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &quot;sl-nedis&quot; and &quot;sl-IT-nedis&quot; might be appropriate while the tag
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &quot;is-nedis&quot; is not.<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;Comments<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;&nbsp;Comments contains additional information about the subtag, as<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; deemed appropriate for understanding the registry and<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; implementing language tags using the subtag or tag.
<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;Suppress-Script<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;&nbsp;Suppress-Script contains a script subtag that SHOULD NOT be<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; used to form language tags with the associated primary language<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; subtag.&nbsp;&nbsp;This field MUST only appear in records whose &#39;Type&#39;
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; field-body is &#39;language&#39;.&nbsp;&nbsp;See Section 4.1.<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;Macrolanguage<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;&nbsp;Macrolanguage contains a primary or extended language subtag<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; defined by ISO 639 as a &quot;macrolanguage&quot; that encompasses this
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; language subtag.&nbsp;&nbsp;This field MUST only appear in records whose<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#39;Type&#39; field-body is &#39;language&#39; or &#39;extlang&#39;.<br><br>&nbsp;&nbsp; Future versions of this document might add additional fields to the
<br>&nbsp;&nbsp; registry, so implementations SHOULD ignore fields found in the<br>&nbsp;&nbsp; registry that are not defined in this document.<br><br><br><br><br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 23]
<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>3.1.3.&nbsp;&nbsp;Subtag and Tag Fields<br><br>&nbsp;&nbsp; The &#39;Subtag&#39; field MUST use lowercase letters to form the subtag,<br>&nbsp;&nbsp; with two exceptions.&nbsp;&nbsp;Subtags whose &#39;Type&#39; field is &#39;script&#39; (in
<br>&nbsp;&nbsp; other words, subtags defined by ISO 15924) MUST use titlecase.<br>&nbsp;&nbsp; Subtags whose &#39;Type&#39; field is &#39;region&#39; (in other words, the non-<br>&nbsp;&nbsp; numeric region subtags defined by ISO 3166) MUST use uppercase.
<br>&nbsp;&nbsp; These exceptions mirror the use of case in the underlying standards.<br><br>&nbsp;&nbsp; Each subtag in the tags contained in a &#39;Tag&#39; field MUST be formatted<br>&nbsp;&nbsp; using the rules in the preceeding paragraph.&nbsp;&nbsp;That is, all subtags
<br>&nbsp;&nbsp; are lowercase except for subtags that represent script or region<br>&nbsp;&nbsp; codes.<br><br>3.1.4.&nbsp;&nbsp;Description Field<br><br>&nbsp;&nbsp; The field &#39;Description&#39; contains a description of the tag or subtag<br>&nbsp;&nbsp; in the record.&nbsp;&nbsp;The &#39;Description&#39; field MAY appear more than once per
<br>&nbsp;&nbsp; record, that is, there can be multiple descriptions for a given<br>&nbsp;&nbsp; record.&nbsp;&nbsp;The &#39;Description&#39; field MAY include the full range of<br>&nbsp;&nbsp; Unicode characters.&nbsp;&nbsp;At least one of the &#39;Description&#39; fields MUST be
<br>&nbsp;&nbsp; written or transcribed into the Latin script; additional<br>&nbsp;&nbsp; &#39;Description&#39; fields MAY also include a description in a non-Latin<br>&nbsp;&nbsp; script.&nbsp;&nbsp;Each &#39;Description&#39; field MUST be unique, both within the
<br>&nbsp;&nbsp; record in which it appears and for the collection of records of the<br>&nbsp;&nbsp; same type.&nbsp;&nbsp;Moreover, formatting variations of the same description<br>&nbsp;&nbsp; MUST NOT occur in that specific record or in any other record of the
<br>&nbsp;&nbsp; same type.&nbsp;&nbsp;For example, while the ISO 639-1 code &#39;fy&#39; contains both<br>&nbsp;&nbsp; the descriptions &quot;Western Frisian&quot; and &quot;Frisian, Western&quot;, only one<br>&nbsp;&nbsp; of these descriptions appears in the registry.
<br><br>&nbsp;&nbsp; The &#39;Description&#39; field is used for identification purposes and<br>&nbsp;&nbsp; SHOULD NOT be taken to represent the actual native name of the<br>&nbsp;&nbsp; language or variation or to be in any particular language.<br><br>
&nbsp;&nbsp; For records taken from a source standard (such as ISO 639 or ISO<br>&nbsp;&nbsp; 3166), the &#39;Description&#39; value(s) SHOULD also be taken from the<br>&nbsp;&nbsp; source standard.&nbsp;&nbsp;Multiple descriptions in the source standard MUST<br>
&nbsp;&nbsp; be split into separate &#39;Description&#39; fields.&nbsp;&nbsp;The source standard&#39;s<br>&nbsp;&nbsp; descriptions MAY be edited, either prior to insertion or via the<br>&nbsp;&nbsp; registration process.&nbsp;&nbsp;For fields of type &#39;language&#39; or &#39;extlang&#39;,
<br>&nbsp;&nbsp; the first &#39;Description&#39; field appearing in the Registry corresponds<br>&nbsp;&nbsp; to the Reference Name assigned by ISO 639-3.&nbsp;&nbsp;This helps facilitate<br>&nbsp;&nbsp; cross-referencing between ISO 639 and the registry.<br><br>
&nbsp;&nbsp; When creating or updating a record due to the action of one of the<br>&nbsp;&nbsp; source standards, the Language Subtag Reviewer SHOULD remove<br>&nbsp;&nbsp; duplicate or redundant descriptions and MAY edit descriptions to<br><br><br><br>
Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 24]<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>&nbsp;&nbsp; correct irregularities in formatting (such as misspellings,
<br>&nbsp;&nbsp; inappropriate apostrophes or other punctuation, or excessive or<br>&nbsp;&nbsp; missing spaces) prior to submitting the proposed record to the ietf-<br>&nbsp;&nbsp; languages list.<br><br>&nbsp;&nbsp; Note: Descriptions in registry entries that correspond to ISO 639,
<br>&nbsp;&nbsp; ISO 15924, ISO 3166, or UN M.49 codes are intended only to indicate<br>&nbsp;&nbsp; the meaning of that identifier as defined in the source standard at<br>&nbsp;&nbsp; the time it was added to the registry.&nbsp;&nbsp;The description does not<br>
&nbsp;&nbsp; replace the content of the source standard itself.&nbsp;&nbsp;The descriptions<br>&nbsp;&nbsp; are not intended to be the English localized names for the subtags.<br>&nbsp;&nbsp; Localization or translation of language tag and subtag descriptions<br>
&nbsp;&nbsp; is out of scope of this document.<br><br>3.1.5.&nbsp;&nbsp;Deprecated Field<br><br>&nbsp;&nbsp; The field &#39;Deprecated&#39; MAY be added to any record via the maintenance<br>&nbsp;&nbsp; process described in Section 3.3 or via the registration process
<br>&nbsp;&nbsp; described in Section 3.5.&nbsp;&nbsp;Usually, the addition of a &#39;Deprecated&#39;<br>&nbsp;&nbsp; field is due to the action of one of the standards bodies, such as<br>&nbsp;&nbsp; ISO 3166, withdrawing a code.&nbsp;&nbsp;In some historical cases, it might not
<br>&nbsp;&nbsp; have been possible to reconstruct the original deprecation date.&nbsp;&nbsp;For<br>&nbsp;&nbsp; these cases, an approximate date appears in the registry.&nbsp;&nbsp;Although<br>&nbsp;&nbsp; valid in language tags, subtags and tags with a &#39;Deprecated&#39; field
<br>&nbsp;&nbsp; are deprecated and validating processors SHOULD NOT generate these<br>&nbsp;&nbsp; subtags.&nbsp;&nbsp;Note that a record that contains a &#39;Deprecated&#39; field and<br>&nbsp;&nbsp; no corresponding &#39;Preferred-Value&#39; field has no replacement mapping.
<br><br>3.1.6.&nbsp;&nbsp;Preferred-Value Field<br><br>&nbsp;&nbsp; The field &#39;Preferred-Value&#39; contains a mapping between the record in<br>&nbsp;&nbsp; which it appears and another tag or subtag.&nbsp;&nbsp;The value in this field<br>&nbsp;&nbsp; is strongly RECOMMENDED as the best choice to represent the value of
<br>&nbsp;&nbsp; this record when selecting a language tag.&nbsp;&nbsp;These values form three<br>&nbsp;&nbsp; groups:<br><br>&nbsp;&nbsp; 1.&nbsp;&nbsp;ISO 639 language codes that were later withdrawn in favor of<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; other codes.&nbsp;&nbsp;These values are mostly a historical curiosity.
<br><br>&nbsp;&nbsp; 2.&nbsp;&nbsp;ISO 3166 region codes that have been withdrawn in favor of a new<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; code.&nbsp;&nbsp;This sometimes happens when a country changes its name or<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; administration in such a way that warrants a new region code.
<br><br>&nbsp;&nbsp; 3.&nbsp;&nbsp;Grandfathered or redundant tags from RFC 3066.&nbsp;&nbsp;In many cases,<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; these tags have become obsolete because the values they represent<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; were later encoded by ISO 639.<br><br>&nbsp;&nbsp; Records that contain a &#39;Preferred-Value&#39; field MUST also have a
<br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 25]<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>&nbsp;&nbsp; &#39;Deprecated&#39; field.&nbsp;&nbsp;This field contains a date of deprecation.
<br>&nbsp;&nbsp; Thus, a language tag processor can use the registry to construct the<br>&nbsp;&nbsp; valid, non-deprecated set of subtags for a given date.&nbsp;&nbsp;In addition,<br>&nbsp;&nbsp; for any given tag, a processor can construct the set of valid<br>
&nbsp;&nbsp; language tags that correspond to that tag for all dates up to the<br>&nbsp;&nbsp; date of the registry.&nbsp;&nbsp;The ability to do these mappings MAY be<br>&nbsp;&nbsp; beneficial to applications that are matching, selecting, for<br>&nbsp;&nbsp; filtering content based on its language tags.
<br><br>&nbsp;&nbsp; Note that &#39;Preferred-Value&#39; mappings in records of type &#39;region&#39;<br>&nbsp;&nbsp; sometimes do not represent exactly the same meaning as the original<br>&nbsp;&nbsp; value.&nbsp;&nbsp;There are many reasons for a country code to be changed, and
<br>&nbsp;&nbsp; the effect this has on the formation of language tags will depend on<br>&nbsp;&nbsp; the nature of the change in question.<br><br>&nbsp;&nbsp; In particular, the &#39;Preferred-Value&#39; field does not imply retagging<br>&nbsp;&nbsp; content that uses the affected subtag.
<br><br>&nbsp;&nbsp; The field &#39;Preferred-Value&#39; MUST NOT be modified once created in the<br>&nbsp;&nbsp; registry.&nbsp;&nbsp;The field MAY be added to records according to the rules<br>&nbsp;&nbsp; in Section 3.3.<br><br>&nbsp;&nbsp; The &#39;Preferred-Value&#39; field in records of type &quot;grandfathered&quot; and
<br>&nbsp;&nbsp; &quot;redundant&quot; contains whole language tags that are strongly<br>&nbsp;&nbsp; RECOMMENDED for use in place of the record&#39;s value.&nbsp;&nbsp;In many cases,<br>&nbsp;&nbsp; the mappings were created by deprecation of the tags during the
<br>&nbsp;&nbsp; period before this document was adopted.&nbsp;&nbsp;For example, the tag &quot;no-<br>&nbsp;&nbsp; nyn&quot; was deprecated in favor of the ISO 639-1-defined language code<br>&nbsp;&nbsp; &#39;nn&#39;.<br><br>3.1.7.&nbsp;&nbsp;Prefix Field<br><br>&nbsp;&nbsp; The &#39;Prefix&#39; field contains an extended language range whose subtags
<br>&nbsp;&nbsp; are appropriate to use with this subtag: each of the subtags in one<br>&nbsp;&nbsp; of the subtag&#39;s Prefix fields MUST appear before the variant in a<br>&nbsp;&nbsp; valid tag.&nbsp;&nbsp;For example, the variant subtag &#39;1996&#39; has a &#39;Prefix&#39;
<br>&nbsp;&nbsp; field of &quot;de&quot;.&nbsp;&nbsp;This means that tags starting with the sequence &quot;de-&quot;<br>&nbsp;&nbsp; are appropriate with this subtag, so &quot;de-Latg-1996&quot; and &quot;de-CH-1996&quot;<br>&nbsp;&nbsp; are both acceptable, while the tag &quot;fr-1996&quot; is an inappropriate
<br>&nbsp;&nbsp; choice.<br><br>&nbsp;&nbsp; The field of type &#39;Prefix&#39; MUST NOT be removed from any record.&nbsp;&nbsp;The<br>&nbsp;&nbsp; field-body for this type of field MAY be modified, but only if the<br>&nbsp;&nbsp; modification broadens the meaning of the subtag.&nbsp;&nbsp;That is, the field-
<br>&nbsp;&nbsp; body can be replaced only by a prefix a prefix of itself.&nbsp;&nbsp;For<br>&nbsp;&nbsp; example, the Prefix &quot;be-Latn&quot; (Belarusian, Latin script) could be<br>&nbsp;&nbsp; replaced by the Prefix &quot;be&quot; (Belarusian) but not by the Prefix &quot;ru-
<br>&nbsp;&nbsp; Latn&quot; (Russian, Latin script).<br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 26]<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br>
<br>&nbsp;&nbsp; Records of type &#39;variant&#39; MAY have more than one field of type<br>&nbsp;&nbsp; &#39;Prefix&#39;.&nbsp;&nbsp;Additional fields of this type MAY be added to a &#39;variant&#39;<br>&nbsp;&nbsp; record via the registration process.<br><br>&nbsp;&nbsp; The field-body of the &#39;Prefix&#39; field MUST NOT conflict with any
<br>&nbsp;&nbsp; &#39;Prefix&#39; already registered for a given record.&nbsp;&nbsp;Such a conflict<br>&nbsp;&nbsp; would occur when when no valid tag could be constructed that would<br>&nbsp;&nbsp; contain the prefix, such as when when two subtags each have a<br>
&nbsp;&nbsp; &#39;Prefix&#39; that contains the other subtag.&nbsp;&nbsp;For example, suppose that<br>&nbsp;&nbsp; the subtag &#39;avariant&#39; has the prefix &quot;es-bvariant&quot;.&nbsp;&nbsp;Then the subtag<br>&nbsp;&nbsp; &#39;bvariant&#39; cannot given the prefix &#39;avariant&#39;, for that would require
<br>&nbsp;&nbsp; a tag of the form &quot;es-avariant-bvariant-avariant&quot;, which would not be<br>&nbsp;&nbsp; valid.<br><br>&nbsp;&nbsp; Records of type &#39;extlang&#39; MUST have _exactly_ one &#39;Prefix&#39; field.<br><br>3.1.8.&nbsp;&nbsp;Suppress-Script Field
<br><br>&nbsp;&nbsp; The field &#39;Suppress-Script&#39; contains a script subtag (whose record<br>&nbsp;&nbsp; appears in the registry).&nbsp;&nbsp;The field &#39;Suppress-Script&#39; MUST only<br>&nbsp;&nbsp; appear in records whose &#39;Type&#39; field-body is &#39;language&#39;.&nbsp;&nbsp;This field
<br>&nbsp;&nbsp; MUST NOT appear more than one time in a record.&nbsp;&nbsp;This field indicates<br>&nbsp;&nbsp; a script used to write the overwhelming majority of documents for the<br>&nbsp;&nbsp; given language.&nbsp;&nbsp;This script code therefore adds no distinguishing
<br>&nbsp;&nbsp; information to a language tag.&nbsp;&nbsp;This helps ensure greater<br>&nbsp;&nbsp; compatibility between the language tags generated according to the<br>&nbsp;&nbsp; rules in this document and language tags and tag processors or<br>&nbsp;&nbsp; consumers based on RFC 3066 by indicating that the script subtag
<br>&nbsp;&nbsp; SHOULD NOT be used for most documents in that language.&nbsp;&nbsp;For example,<br>&nbsp;&nbsp; virtually all Icelandic documents are written in the Latin script,<br>&nbsp;&nbsp; making the subtag &#39;Latn&#39; redundant in the tag &quot;is-Latn&quot;.
<br><br>&nbsp;&nbsp; Many language subtag records do not have a Suppress-Script field.<br>&nbsp;&nbsp; The lack of a Suppress-Script might indicate that the language is<br>&nbsp;&nbsp; customarily written in more than one script or that the language is
<br>&nbsp;&nbsp; not customarily written at all.&nbsp;&nbsp;It might also mean that sufficient<br>&nbsp;&nbsp; information was not available when the record was created and thus<br>&nbsp;&nbsp; remains a candidate for future registration.<br><br>3.1.9.&nbsp;&nbsp;Macrolanguage Field
<br><br>&nbsp;&nbsp; The Macrolanguage field contains a primary or extended language<br>&nbsp;&nbsp; subtag that encompasses this subtag&#39;s language.&nbsp;&nbsp;That is, the<br>&nbsp;&nbsp; language subtag whose record this field appears in is sometimes<br>&nbsp;&nbsp; considered to be a sub-language of the Macrolanguage.&nbsp;&nbsp;Macrolanguage
<br>&nbsp;&nbsp; values are defined by ISO 639-3 and the exact nature of the<br>&nbsp;&nbsp; relationship between the encompassed and encompassing languages<br>&nbsp;&nbsp; varies on a case-by-case basis.<br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 27]
<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>&nbsp;&nbsp; This field can be useful to applications or users when selecting<br>&nbsp;&nbsp; language tags or as additional metadata useful in matching.&nbsp;&nbsp;The
<br>&nbsp;&nbsp; Macrolanguage field can only occur in records of type &#39;language&#39; or<br>&nbsp;&nbsp; &#39;extlang&#39;.&nbsp;&nbsp;Only values assigned by ISO 639-3 will be considered for<br>&nbsp;&nbsp; inclusion.&nbsp;&nbsp;Macrolanguage fields MAY be added or removed via the
<br>&nbsp;&nbsp; normal registration process whenever ISO 639-3 defines new values.<br>&nbsp;&nbsp; Macrolanguages are informational, and MAY be removed or changed if<br>&nbsp;&nbsp; ISO 639-3 changes the values.<br><br>&nbsp;&nbsp; For example, the language subtags &#39;nb&#39; (Norwegian Bokmal) and &#39;nn&#39;
<br>&nbsp;&nbsp; (Norwegian Nynorsk) each have a Macrolanguage entry of &#39;no&#39;<br>&nbsp;&nbsp; (Norwegian).&nbsp;&nbsp;For more information see Section 4.1.<br><br>3.1.10.&nbsp;&nbsp;Comments Field<br><br>&nbsp;&nbsp; The field &#39;Comments&#39; conveys additional information about the record
<br>&nbsp;&nbsp; and MAY appear more than once per record.&nbsp;&nbsp;The field-body MAY include<br>&nbsp;&nbsp; the full range of Unicode characters and is not restricted to any<br>&nbsp;&nbsp; particular script.&nbsp;&nbsp;This field MAY be inserted or changed via the<br>
&nbsp;&nbsp; registration process and no guarantee of stability is provided.&nbsp;&nbsp;The<br>&nbsp;&nbsp; content of this field is not restricted, except by the need to<br>&nbsp;&nbsp; register the information, the suitability of the request, and by<br>&nbsp;&nbsp; reasonable practical size limitations.
<br><br>3.2.&nbsp;&nbsp;Language Subtag Reviewer<br><br>&nbsp;&nbsp; The Language Subtag Reviewer moderates the ietf-languages mailing<br>&nbsp;&nbsp; list, responds to requests for registration, and performs the other<br>&nbsp;&nbsp; registry maintenance duties described in Section 
3.3.&nbsp;&nbsp;Only the<br>&nbsp;&nbsp; Language Subtag Reviewer is permitted to request IANA to change,<br>&nbsp;&nbsp; update, or add records to the Language Subtag Registry.&nbsp;&nbsp;The Language<br>&nbsp;&nbsp; Subtag Reviewer MAY delegate list moderation and other clerical
<br>&nbsp;&nbsp; duties as needed.<br><br>&nbsp;&nbsp; The Language Subtag Reviewer is appointed by the IESG for an<br>&nbsp;&nbsp; indefinite term, subject to removal or replacement at the IESG&#39;s<br>&nbsp;&nbsp; discretion.&nbsp;&nbsp;The IESG will solicit nominees for the position (upon
<br>&nbsp;&nbsp; adoption of this document or upon a vacancy) and then solicit<br>&nbsp;&nbsp; feedback on the nominees&#39; qualifications.&nbsp;&nbsp;Qualified candidates<br>&nbsp;&nbsp; should be familiar with BCP 47 and its requirements; be willing to<br>&nbsp;&nbsp; fairly, responsively, and judiciously administer the registration
<br>&nbsp;&nbsp; process; and be suitably informed about the issues of language<br>&nbsp;&nbsp; identification so that they can draw upon and assess the claim and<br>&nbsp;&nbsp; contributions of language experts and subtag requesters.<br><br>&nbsp;&nbsp; The subsequent performance or decisions of the Language Subtag
<br>&nbsp;&nbsp; Reviewer MAY be appealed to the IESG under the same rules as other<br>&nbsp;&nbsp; IETF decisions (see [RFC2026]).&nbsp;&nbsp;The IESG can reverse or overturn the<br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 28]
<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>&nbsp;&nbsp; decision of the Language Subtag Reviewer, provide guidance, or take<br>&nbsp;&nbsp; other appropriate actions.<br><br>3.3.&nbsp;&nbsp;Maintenance of the Registry
<br><br>&nbsp;&nbsp; Maintenance of the registry requires that as codes are assigned or<br>&nbsp;&nbsp; withdrawn by ISO 639, ISO 15924, ISO 3166, and UN M.49, the Language<br>&nbsp;&nbsp; Subtag Reviewer MUST evaluate each change and determine the<br>
&nbsp;&nbsp; appropriate course of action according to the rules in this document.<br>&nbsp;&nbsp; Such updates follow the registration process described in<br>&nbsp;&nbsp; Section 3.5.&nbsp;&nbsp;Usually the Language Subtag Reviewer will start the<br>&nbsp;&nbsp; process for the new or updated record by filling in the registration
<br>&nbsp;&nbsp; form and submitting it.&nbsp;&nbsp;If a change to one of these standards takes<br>&nbsp;&nbsp; place and the Language Subtag Reviewer does not do this in a timely<br>&nbsp;&nbsp; manner, then any interested party MAY submit the form.&nbsp;&nbsp;Thereafter
<br>&nbsp;&nbsp; the registration process continues normally.<br><br>&nbsp;&nbsp; The Language Subtag Reviewer MUST ensure that new subtags meet the<br>&nbsp;&nbsp; requirements elsewhere in this document (and most especially in<br>&nbsp;&nbsp; Section 3.4) or submit an appropriate registration form for an
<br>&nbsp;&nbsp; alternate subtag as described in that section.&nbsp;&nbsp;Each individual<br>&nbsp;&nbsp; subtag affected by a change MUST be sent to the ietf-languages list<br>&nbsp;&nbsp; with its own registration form and in a separate message.<br><br>3.4.&nbsp;&nbsp;Stability of IANA Registry Entries
<br><br>&nbsp;&nbsp; The stability of entries and their meaning in the registry is<br>&nbsp;&nbsp; critical to the long-term stability of language tags.&nbsp;&nbsp;The rules in<br>&nbsp;&nbsp; this section guarantee that a specific language tag&#39;s meaning is
<br>&nbsp;&nbsp; stable over time and will not change.<br><br>&nbsp;&nbsp; These rules specifically deal with how changes to codes (including<br>&nbsp;&nbsp; withdrawal and deprecation of codes) maintained by ISO 639, ISO<br>&nbsp;&nbsp; 15924, ISO 3166, and UN 
M.49 are reflected in the IANA Language<br>&nbsp;&nbsp; Subtag Registry.&nbsp;&nbsp;Assignments to the IANA Language Subtag Registry<br>&nbsp;&nbsp; MUST follow the following stability rules:<br><br>&nbsp;&nbsp; 1.&nbsp;&nbsp; Values in the fields &#39;Type&#39;, &#39;Subtag&#39;, &#39;Tag&#39;, &#39;Added&#39;,
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&#39;Deprecated&#39; and &#39;Preferred-Value&#39; MUST NOT be changed and are<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;guaranteed to be stable over time.<br><br>&nbsp;&nbsp; 2.&nbsp;&nbsp; Values in the &#39;Description&#39; field MUST NOT be changed in a way
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;that would invalidate previously-existing tags.&nbsp;&nbsp;They MAY be<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;broadened somewhat in scope, changed to add information, or<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;adapted to the most common modern usage.&nbsp;&nbsp;For example, countries<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;occasionally change their official names; a historical example<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;of this would be &quot;Upper Volta&quot; changing to &quot;Burkina Faso&quot;.<br><br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 29]
<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>&nbsp;&nbsp; 3.&nbsp;&nbsp; Values in the field &#39;Prefix&#39; MAY be added to records of type<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&#39;variant&#39; via the registration process.&nbsp;&nbsp;If a prefix is added to
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a variant record, &#39;Comment&#39; fields SHOULD be used to explain<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;different usages with the various prefixes.<br><br>&nbsp;&nbsp; 4.&nbsp;&nbsp; Values in the field &#39;Prefix&#39; in records of type &#39;variant&#39; MAY be
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;modified, so long as the modifications broaden the set of<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;prefixes.&nbsp;&nbsp;That is, a prefix MAY be replaced by one of its own<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;prefixes.&nbsp;&nbsp;For example, the prefix &quot;en-US&quot; could be replaced by
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&quot;en&quot;, but not by the prefixes &quot;en-Latn&quot;, &quot;fr&quot;, or &quot;en-US-boont&quot;.<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If one of those prefixes were needed, a new Prefix SHOULD be<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;registered.<br><br>&nbsp;&nbsp; 5.&nbsp;&nbsp; Values in the field &#39;Prefix&#39; in records of type &#39;extlang&#39; MUST
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NOT be modified.<br><br>&nbsp;&nbsp; 6.&nbsp;&nbsp; Values in the field &#39;Prefix&#39; MUST NOT be removed.<br><br>&nbsp;&nbsp; 7.&nbsp;&nbsp; The field &#39;Comments&#39; MAY be added, changed, modified, or removed<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;via the registration process or any of the processes or
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;considerations described in this section.<br><br>&nbsp;&nbsp; 8.&nbsp;&nbsp; The field &#39;Suppress-Script&#39; MAY be added or removed via the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;registration process.<br><br>&nbsp;&nbsp; 9.&nbsp;&nbsp; The field &#39;Macrolanguage&#39; MAY be added or removed via the
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;registration process, but only in response to changes made by<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ISO 639.&nbsp;&nbsp;The Macrolanguage field appears whenever a language<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;has a corresponding Macrolanguage in ISO 639.&nbsp;&nbsp;That is, the<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;macrolanguage fields in the registry exactly match those of ISO<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;639.&nbsp;&nbsp;No other macrolanguage mappings will be considered for<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;registration.<br><br>&nbsp;&nbsp; 10.&nbsp;&nbsp;Codes assigned by ISO 639-1 that do not conflict with existing
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;two-letter primary language subtags and which have no<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;corresponding three-letter primary or extended language subtags<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;defined in the registry are entered into the IANA registry as<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;new records of type &#39;language&#39;.
<br><br>&nbsp;&nbsp; 11.&nbsp;&nbsp;Codes assigned by ISO 639-2 that do not conflict with existing<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;three-letter primary or extended language subtags are entered<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;into the IANA registry as new records of type &#39;language&#39;.
<br><br>&nbsp;&nbsp; 12.&nbsp;&nbsp;Codes assigned by ISO 639-3 that do not conflict with existing<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;three-letter primary or extended language subtags are entered<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;into the IANA registry as new records.<br><br><br><br><br>
<br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 30]<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.&nbsp;&nbsp;Codes that have a defined &quot;macrolanguage&quot; mapping at the
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;time of their registration MUST be entered into the registry<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;as records of type &#39;extlang&#39; with a &#39;Prefix&#39; field<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;containing the appropriate prefix tag.&nbsp;&nbsp;They MUST also
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;include a &quot;Macrolanguage&quot; field in their record.<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.&nbsp;&nbsp;Codes that represent sign languages MUST be entered into the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;registry as record of type &#39;extlang&#39; with a &#39;Prefix&#39; field
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;that matches the Basic Language Range &quot;sgn&quot; (see Section<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.3.1 &quot;Basic Filtering&quot; in [RFC4647]).<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.&nbsp;&nbsp;All other codes MUST be entered into the registry as records
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;of type &#39;language&#39;.<br><br>&nbsp;&nbsp; 13.&nbsp;&nbsp;A record of type &#39;language&#39; or &#39;extlang&#39; MUST NOT be registered<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if there exists a record of either type with the same subtag<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;value.&nbsp;&nbsp;For example, if an &#39;extlang&#39; subtag &#39;foo&#39; exists in the
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;registry, all attempts to register a &#39;language&#39; subtag &#39;foo&#39;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;will be rejected.<br><br>&nbsp;&nbsp; 14.&nbsp;&nbsp;Codes assigned by ISO 15924 and ISO 3166 that do not conflict<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;with existing subtags of the associated type and whose meaning
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;is not the same as an existing subtag of the same type are<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;entered into the IANA registry as new records.<br><br>&nbsp;&nbsp; 15.&nbsp;&nbsp;Codes assigned by ISO 639, ISO 15924, or ISO 3166 that are<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;withdrawn by their respective maintenance or registration
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;authority remain valid in language tags.&nbsp;&nbsp;A &#39;Deprecated&#39; field<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;containing the date of withdrawal MUST be added to the record.<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If a new record of the same type is added that represents a
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;replacement value, then a &#39;Preferred-Value&#39; field MAY also be<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;added.&nbsp;&nbsp;The registration process MAY be used to add comments<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;about the withdrawal of the code by the respective standard.
<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Example&nbsp;&nbsp;The region code &#39;TL&#39; was assigned to the country<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#39;Timor-Leste&#39;, replacing the code &#39;TP&#39; (which was assigned to<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#39;East Timor&#39; when it was under administration by Portugal).
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; The subtag &#39;TP&#39; remains valid in language tags, but its<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; record contains the a &#39;Preferred-Value&#39; of &#39;TL&#39; and its field<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#39;Deprecated&#39; contains the date the new code was assigned
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (&#39;2004-07-06&#39;).<br><br>&nbsp;&nbsp; 16.&nbsp;&nbsp;Codes assigned by ISO 639, ISO 15924, or ISO 3166 that conflict<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;with existing subtags of the associated type, including subtags<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;that are deprecated, MUST NOT be entered into the registry.&nbsp;&nbsp;The
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;following additional considerations apply to subtag values that<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;are reassigned:<br><br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 31]<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007
<br><br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A.&nbsp;&nbsp;For ISO 639 codes, if the newly assigned code&#39;s meaning is<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;not represented by a subtag in the IANA registry, the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Language Subtag Reviewer, as described in Section 
3.5, SHALL<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;prepare a proposal for entering in the IANA registry as soon<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;as practical a registered language subtag as an alternate<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;value for the new code.&nbsp;&nbsp;The form of the registered language
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;subtag will be at the discretion of the Language Subtag<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Reviewer and MUST conform to other restrictions on language<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;subtags in this document.<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.&nbsp;&nbsp;For all subtags whose meaning is derived from an external
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;standard (that is, by ISO 639, ISO 15924, ISO 3166, or UN<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;M.49), if a new meaning is assigned to an existing code and<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;the new meaning broadens the meaning of that code, then the
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;meaning for the associated subtag MAY be changed to match.<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The meaning of a subtag MUST NOT be narrowed, however, as<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;this can result in an unknown proportion of the existing<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;uses of a subtag becoming invalid.&nbsp;&nbsp;Note: ISO 639<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;maintenance agency/registration authority (MA/RA) has<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;adopted a similar stability policy.<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.&nbsp;&nbsp;For ISO 15924 codes, if the newly assigned code&#39;s meaning is
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;not represented by a subtag in the IANA registry, the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Language Subtag Reviewer, as described in Section 3.5, SHALL<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;prepare a proposal for entering in the IANA registry as soon
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;as practical a registered variant subtag as an alternate<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;value for the new code.&nbsp;&nbsp;The form of the registered variant<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;subtag will be at the discretion of the Language Subtag<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Reviewer and MUST conform to other restrictions on variant<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;subtags in this document.<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.&nbsp;&nbsp;For ISO 3166 codes, if the newly assigned code&#39;s meaning is<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;associated with the same UN 
M.49 code as another &#39;region&#39;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;subtag, then the existing region subtag remains as the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;preferred value for that region and no new entry is created.<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A comment MAY be added to the existing region subtag
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;indicating the relationship to the new ISO 3166 code.<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;E.&nbsp;&nbsp;For ISO 3166 codes, if the newly assigned code&#39;s meaning is<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;associated with a UN M.49 code that is not represented by an
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;existing region subtag, then the Language Subtag Reviewer,<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;as described in Section 3.5, SHALL prepare a proposal for<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;entering the appropriate UN M.49 country code as an entry in
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;the IANA registry.<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;F.&nbsp;&nbsp;For ISO 3166 codes, if there is no associated UN numeric<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;code, then the Language Subtag Reviewer SHALL petition the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;UN to create one.&nbsp;&nbsp;If there is no response from the UN
<br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 32]<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;within ninety days of the request being sent, the Language
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Subtag Reviewer SHALL prepare a proposal for entering in the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;IANA registry as soon as practical a registered variant<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;subtag as an alternate value for the new code.&nbsp;&nbsp;The form of
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;the registered variant subtag will be at the discretion of<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;the Language Subtag Reviewer and MUST conform to other<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;restrictions on variant subtags in this document.&nbsp;&nbsp;This<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;situation is very unlikely to ever occur.
<br><br>&nbsp;&nbsp; 17.&nbsp;&nbsp;UN M.49 has codes for both countries and areas (such as &#39;276&#39;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for Germany) and geographical regions and sub-regions (such as<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&#39;150&#39; for Europe).&nbsp;&nbsp;UN M.49 country or area codes for which
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;there is no corresponding ISO 3166 code SHOULD NOT be<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;registered, except as a surrogate for an ISO 3166 code that is<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;blocked from registration by an existing subtag.&nbsp;&nbsp;If such a code<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;becomes necessary, then the registration authority for ISO 3166
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;SHOULD first be petitioned to assign a code to the region.&nbsp;&nbsp;If<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;the petition for a code assignment by ISO 3166 is refused or not<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;acted on in a timely manner, the registration process described
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;in Section 3.5 MAY then be used to register the corresponding UN<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;M.49 code.&nbsp;&nbsp;This way, UN M.49 codes remain available as the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;value of last resort in cases where ISO 3166 reassigns a<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;deprecated value in the registry.
<br><br>&nbsp;&nbsp; 18.&nbsp;&nbsp;Stability provisions apply to grandfathered tags with this<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;exception: should it be possible to compose one of the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;grandfathered tags from registered subtags, then the field<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&#39;Type&#39; in that record is changed from &#39;grandfathered&#39; to
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&#39;redundant&#39;.&nbsp;&nbsp;Note that this will not affect language tags that<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;match the grandfathered tag, since these tags will now match<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;valid generative subtag sequences.&nbsp;&nbsp;For example, this document
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;caused the ISO 639-3 code &#39;gan&#39;, used in the redundant tag &quot;zh-<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;gan&quot;, to be registered as an extended language subtag.&nbsp;&nbsp;The<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;formerly-grandfathered tag &quot;zh-gan&quot; became a redundant tag as a
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;result (but existing content or implementations that use &quot;zh-<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;gan&quot; remain valid).<br><br>&nbsp;&nbsp; Note: The redundant and grandfathered entries together are the<br>&nbsp;&nbsp; complete list of tags registered under [RFC3066].&nbsp;&nbsp;The redundant tags
<br>&nbsp;&nbsp; are those that can now be formed using the subtags defined in the<br>&nbsp;&nbsp; registry together with the rules of Section 2.2.&nbsp;&nbsp;The grandfathered<br>&nbsp;&nbsp; entries include those that can never be legal under those same<br>&nbsp;&nbsp; provisions plus those tags that contain subtags not yet registered
<br>&nbsp;&nbsp; or, perhaps, inappropriate for registration.<br><br>&nbsp;&nbsp; The set of redundant and grandfathered tags is permanent and stable:<br>&nbsp;&nbsp; new entries in this section MUST NOT be added and existing entries<br>&nbsp;&nbsp; MUST NOT be removed.&nbsp;&nbsp;Records of type &#39;grandfathered&#39; MAY have their
<br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 33]<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>&nbsp;&nbsp; type converted to &#39;redundant&#39;; see item 12 in Section 
3.6 for more<br>&nbsp;&nbsp; information.&nbsp;&nbsp;The decision-making process about which tags were<br>&nbsp;&nbsp; initially grandfathered and which were made redundant is described in<br>&nbsp;&nbsp; [RFC4645].<br><br>&nbsp;&nbsp; RFC 3066 tags that were deprecated prior to the adoption of [RFC4646]
<br>&nbsp;&nbsp; are part of the list of grandfathered tags, and their component<br>&nbsp;&nbsp; subtags were not included as registered variants (although they<br>&nbsp;&nbsp; remain eligible for registration).&nbsp;&nbsp;For example, the tag &quot;art-lojban&quot;
<br>&nbsp;&nbsp; was deprecated in favor of the language subtag &#39;jbo&#39;.<br><br>3.5.&nbsp;&nbsp;Registration Procedure for Subtags<br><br>&nbsp;&nbsp; The procedure given here MUST be used by anyone who wants to use a<br>&nbsp;&nbsp; subtag not currently in the IANA Language Subtag Registry.
<br><br>&nbsp;&nbsp; Only subtags of type &#39;language&#39; and &#39;variant&#39; will be considered for<br>&nbsp;&nbsp; independent registration of new subtags.&nbsp;&nbsp;Subtags needed for<br>&nbsp;&nbsp; stability and subtags necessary to keep the registry synchronized
<br>&nbsp;&nbsp; with ISO 639, ISO 15924, ISO 3166, and UN M.49 within the limits<br>&nbsp;&nbsp; defined by this document also use this process, as described in<br>&nbsp;&nbsp; Section 3.3.&nbsp;&nbsp;Stability provisions are described in Section 3.4.<br><br>&nbsp;&nbsp; This procedure MAY also be used to register or alter the information
<br>&nbsp;&nbsp; for the &#39;Description&#39;, &#39;Comments&#39;, &#39;Deprecated&#39;, &#39;Prefix&#39;, or<br>&nbsp;&nbsp; &#39;Suppress-Script&#39; fields in a subtag&#39;s record as described in<br>&nbsp;&nbsp; Section 3.4.&nbsp;&nbsp;Changes to all other fields in the IANA registry are
<br>&nbsp;&nbsp; NOT permitted.<br><br>&nbsp;&nbsp; Registering a new subtag or requesting modifications to an existing<br>&nbsp;&nbsp; tag or subtag starts with the requester filling out the registration<br>&nbsp;&nbsp; form reproduced below.&nbsp;&nbsp;Note that each response is not limited in
<br>&nbsp;&nbsp; size so that the request can adequately describe the registration.<br>&nbsp;&nbsp; The fields in the &quot;Record Requested&quot; section SHOULD follow the<br>&nbsp;&nbsp; requirements in Section 3.1.<br><br><br><br><br><br><br><br><br>
<br><br><br><br><br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 34]<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>&nbsp;&nbsp; LANGUAGE SUBTAG REGISTRATION FORM
<br>&nbsp;&nbsp; 1. Name of requester:<br>&nbsp;&nbsp; 2. E-mail address of requester:<br>&nbsp;&nbsp; 3. Record Requested:<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Type:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Subtag:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Description:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Prefix:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Preferred-Value:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deprecated:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Suppress-Script:
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Macrolanguage:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Comments:<br><br>&nbsp;&nbsp; 4. Intended meaning of the subtag:<br>&nbsp;&nbsp; 5. Reference to published description<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;of the language (book or article):<br>&nbsp;&nbsp; 6. Any other relevant information:<br>
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Figure 4: The Language Subtag Registration Form<br><br>&nbsp;&nbsp; Examples of completed registration forms can be found in Appendix C<br>&nbsp;&nbsp; or online at <a href="http://www.iana.org/assignments/lang-subtags-templates/">
http://www.iana.org/assignments/lang-subtags-templates/</a>.<br><br>&nbsp;&nbsp; The subtag registration form MUST be sent to<br>&nbsp;&nbsp; &lt;<a href="mailto:ietf-languages@iana.org">ietf-languages@iana.org</a>&gt; for a two-week review period before it can
<br>&nbsp;&nbsp; be submitted to IANA.&nbsp;&nbsp;If modifications are made to the request<br>&nbsp;&nbsp; during the course of the registration process (such as corrections to<br>&nbsp;&nbsp; meet the requirements in Section 3.1) the modified form MUST also be
<br>&nbsp;&nbsp; sent to &lt;<a href="mailto:ietf-languages@iana.org">ietf-languages@iana.org</a>&gt; at least one week prior to<br>&nbsp;&nbsp; submission to IANA.<br><br>&nbsp;&nbsp; Whenever an entry is created or modified in the registry, the &#39;File-
<br>&nbsp;&nbsp; Date&#39; record at the start of the registry is updated to reflect the<br>&nbsp;&nbsp; most recent modification date in the [RFC3339] &quot;full-date&quot; format.<br><br>&nbsp;&nbsp; Before forwarding a new registration to IANA, the Language Subtag
<br>&nbsp;&nbsp; Reviewer MUST ensure that values in the &#39;Subtag&#39; field match case<br>&nbsp;&nbsp; according to the description in Section 3.1.<br><br>&nbsp;&nbsp; The ietf-languages list is an open list and can be joined by sending<br>&nbsp;&nbsp; a request to &lt;
<a href="mailto:ietf-languages-request@iana.org">ietf-languages-request@iana.org</a>&gt;.&nbsp;&nbsp;The list can be<br>&nbsp;&nbsp; hosted by IANA or by any third party at the request of IESG.<br><br>&nbsp;&nbsp; Some fields in both the registration form as well as the registry
<br>&nbsp;&nbsp; record itself permit the use of non-ASCII characters.&nbsp;&nbsp;Registration<br>&nbsp;&nbsp; requests SHOULD use the UTF-8 encoding for consistency and clarity.<br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 35]
<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>&nbsp;&nbsp; However, since some mail clients do not support this encoding, other<br>&nbsp;&nbsp; encodings MAY be used for the registration request.&nbsp;&nbsp;The Language
<br>&nbsp;&nbsp; Subtag Reviewer is responsible for ensuring that the proper Unicode<br>&nbsp;&nbsp; characters appear in both the archived request form and the registry<br>&nbsp;&nbsp; record.&nbsp;&nbsp;In the case of a transcription or encoding error by IANA,
<br>&nbsp;&nbsp; the Language Subtag Reviewer will request that the registry be<br>&nbsp;&nbsp; repaired, providing any necessary information to assist IANA.<br><br>&nbsp;&nbsp; Variant subtags are usually registered for use with a particular<br>&nbsp;&nbsp; range of language tags.&nbsp;&nbsp;For example, the subtag &#39;rozaj&#39; is intended
<br>&nbsp;&nbsp; for use with language tags that start with the primary language<br>&nbsp;&nbsp; subtag &quot;sl&quot;, since Resian is a dialect of Slovenian.&nbsp;&nbsp;Thus, the<br>&nbsp;&nbsp; subtag &#39;rozaj&#39; would be appropriate in tags such as &quot;sl-Latn-rozaj&quot;
<br>&nbsp;&nbsp; or &quot;sl-IT-rozaj&quot;.&nbsp;&nbsp;This information is stored in the &#39;Prefix&#39; field<br>&nbsp;&nbsp; in the registry.&nbsp;&nbsp;Variant registration requests SHOULD include at<br>&nbsp;&nbsp; least one &#39;Prefix&#39; field in the registration form.
<br><br>&nbsp;&nbsp; Extended language subtags MUST include exactly one &#39;Prefix&#39; field.<br><br>&nbsp;&nbsp; The &#39;Prefix&#39; field for a given registered subtag exists in the IANA<br>&nbsp;&nbsp; registry as a guide to usage.&nbsp;&nbsp;Additional prefixes MAY be added by
<br>&nbsp;&nbsp; filing an additional registration form.&nbsp;&nbsp;In that form, the &quot;Any other<br>&nbsp;&nbsp; relevant information:&quot; field MUST indicate that it is the addition of<br>&nbsp;&nbsp; a prefix.<br><br>&nbsp;&nbsp; Requests to add a prefix to a variant subtag that imply a different
<br>&nbsp;&nbsp; semantic meaning will probably be rejected.&nbsp;&nbsp;For example, a request<br>&nbsp;&nbsp; to add the prefix &quot;de&quot; to the subtag &#39;nedis&#39; so that the tag &quot;de-<br>&nbsp;&nbsp; nedis&quot; represented some German dialect would be rejected.&nbsp;&nbsp;The
<br>&nbsp;&nbsp; &#39;nedis&#39; subtag represents a particular Slovenian dialect and the<br>&nbsp;&nbsp; additional registration would change the semantic meaning assigned to<br>&nbsp;&nbsp; the subtag.&nbsp;&nbsp;A separate subtag SHOULD be proposed instead.<br>
<br>&nbsp;&nbsp; The &#39;Description&#39; field MUST contain a description of the tag being<br>&nbsp;&nbsp; registered written or transcribed into the Latin script; it MAY also<br>&nbsp;&nbsp; include a description in a non-Latin script.&nbsp;&nbsp;The &#39;Description&#39; field
<br>&nbsp;&nbsp; is used for identification purposes and doesn&#39;t necessarily represent<br>&nbsp;&nbsp; the actual native name of the language or variation or to be in any<br>&nbsp;&nbsp; particular language.<br><br>&nbsp;&nbsp; While the &#39;Description&#39; field itself is not guaranteed to be stable
<br>&nbsp;&nbsp; and errata corrections MAY be undertaken from time to time, attempts<br>&nbsp;&nbsp; to provide translations or transcriptions of entries in the registry<br>&nbsp;&nbsp; itself will probably be frowned upon by the community or rejected
<br>&nbsp;&nbsp; outright, as changes of this nature have an impact on the provisions<br>&nbsp;&nbsp; in Section 3.4.<br><br>&nbsp;&nbsp; When the two-week period has passed, the Language Subtag Reviewer<br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 36]
<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>&nbsp;&nbsp; MUST take one of the following actions:<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;Explicitly accept the request and forward the form containing the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;record to be inserted or modified to 
<a href="mailto:iana@iana.org">iana@iana.org</a> according to<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;the procedure described in Section 3.3.<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;Explicitly reject the request because of significant objections<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;raised on the list or due to problems with constraints in this
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;document (which MUST be explicitly cited).<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;Extend the review period by granting an additional two-week<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;increment to permit further discussion.&nbsp;&nbsp;After each two-week<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;increment, the Language Subtag Reviewer MUST indicate on the list
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;whether the registration has been accepted, rejected, or extended.<br><br>&nbsp;&nbsp; Note that the Language Subtag Reviewer MAY raise objections on the<br>&nbsp;&nbsp; list if he or she so desires.&nbsp;&nbsp;The important thing is that the
<br>&nbsp;&nbsp; objection MUST be made publicly.<br><br>&nbsp;&nbsp; Sometimes the request needs to be modified as a result of discussion<br>&nbsp;&nbsp; during the review period or due to requirements in this document.<br>&nbsp;&nbsp; The applicant, Language Subtag Reviewer, or others are free to submit
<br>&nbsp;&nbsp; a modified version of the completed registration form, which will be<br>&nbsp;&nbsp; considered in lieu of the original request with the explicit approval<br>&nbsp;&nbsp; of the applicant.&nbsp;&nbsp;Such changes do not restart the two-week<br>
&nbsp;&nbsp; discussion period, although an application containing the final<br>&nbsp;&nbsp; record submitted to IANA MUST appear on the list at least one week<br>&nbsp;&nbsp; prior to the Language Subtag Reviewer forwarding the record to IANA.<br>&nbsp;&nbsp; The applicant is also free to modify a rejected application with
<br>&nbsp;&nbsp; additional information and submit it again; this starts a new two-<br>&nbsp;&nbsp; week comment period.<br><br>&nbsp;&nbsp; Registrations initiated due to the provisions of Section 3.3 or<br>&nbsp;&nbsp; Section 3.4 SHALL NOT be rejected altogether (since they have to
<br>&nbsp;&nbsp; ultimately appear in the registry) and SHOULD be completed as quickly<br>&nbsp;&nbsp; as possible.&nbsp;&nbsp;The review process allows list members to comment on<br>&nbsp;&nbsp; the specific information in the form and the record it contains and
<br>&nbsp;&nbsp; thus help ensure that it is correct and consistent.&nbsp;&nbsp;The Language<br>&nbsp;&nbsp; Subtag Reviewer MAY reject a specific version of the form, but MUST<br>&nbsp;&nbsp; include in the rejection a suitable replacement, extending the review
<br>&nbsp;&nbsp; period as described above, until the form is in a format worthy of<br>&nbsp;&nbsp; reviewer&#39;s approval.<br><br>&nbsp;&nbsp; Decisions made by the Language Subtag Reviewer MAY be appealed to the<br>&nbsp;&nbsp; IESG [RFC2028] under the same rules as other IETF decisions
<br>&nbsp;&nbsp; [RFC2026].&nbsp;&nbsp;This includes a decision to extend the review period or<br>&nbsp;&nbsp; the failure to announce a decision in a clear and timely manner.<br><br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 37]
<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>&nbsp;&nbsp; The approved records appear in the Language Subtag Registry.&nbsp;&nbsp;The<br>&nbsp;&nbsp; approved registration forms are available online under
<br>&nbsp;&nbsp; <a href="http://www.iana.org/assignments/lang-subtags-templates/">http://www.iana.org/assignments/lang-subtags-templates/</a>.<br><br>&nbsp;&nbsp; Updates or changes to existing records follow the same procedure as<br>&nbsp;&nbsp; new registrations.&nbsp;&nbsp;The Language Subtag Reviewer decides whether
<br>&nbsp;&nbsp; there is consensus to update the registration following the two week<br>&nbsp;&nbsp; review period; normally, objections by the original registrant will<br>&nbsp;&nbsp; carry extra weight in forming such a consensus.<br><br>&nbsp;&nbsp; Registrations are permanent and stable.&nbsp;&nbsp;Once registered, subtags
<br>&nbsp;&nbsp; will not be removed from the registry and will remain a valid way in<br>&nbsp;&nbsp; which to specify a specific language or variant.<br><br>&nbsp;&nbsp; Note: The purpose of the &quot;Reference to published description&quot; section<br>
&nbsp;&nbsp; in the registration form is to aid in verifying whether a language is<br>&nbsp;&nbsp; registered or what language or language variation a particular subtag<br>&nbsp;&nbsp; refers to.&nbsp;&nbsp;In most cases, reference to an authoritative grammar or
<br>&nbsp;&nbsp; dictionary of that language will be useful; in cases where no such<br>&nbsp;&nbsp; work exists, other well-known works describing that language or in<br>&nbsp;&nbsp; that language MAY be appropriate.&nbsp;&nbsp;The Language Subtag Reviewer<br>&nbsp;&nbsp; decides what constitutes &quot;good enough&quot; reference material.&nbsp;&nbsp;This
<br>&nbsp;&nbsp; requirement is not intended to exclude particular languages or<br>&nbsp;&nbsp; dialects due to the size of the speaker population or lack of a<br>&nbsp;&nbsp; standardized orthography.&nbsp;&nbsp;Minority languages will be considered<br>&nbsp;&nbsp; equally on their own merits.
<br><br>3.6.&nbsp;&nbsp;Possibilities for Registration<br><br>&nbsp;&nbsp; Possibilities for registration of subtags or information about<br>&nbsp;&nbsp; subtags include:<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;Primary language subtags for languages not listed in ISO 639 that<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;are not variants of any listed or registered language MAY be<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;registered.&nbsp;&nbsp;At the time this document was created, there were no<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;examples of this form of subtag.&nbsp;&nbsp;Before attempting to register a<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;language subtag, there MUST be an attempt to register the language
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;with ISO 639.&nbsp;&nbsp;Subtags MUST NOT be registered for languages<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;defined by codes that exist in ISO 639-1, ISO 639-2, or ISO 639-3,<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;or that are under consideration by the ISO 639 registration<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;authorities, or that have never been attempted for registration
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;with those authorities.&nbsp;&nbsp;If ISO 639 has previously rejected a<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;language for registration, it is reasonable to assume that there<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;must be additional, very compelling evidence of need before it<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;will be registered as a primary language subtag in the IANA<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;registry (to the extent that it is very unlikely that any subtags<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;will be registered of this type).<br><br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 38]
<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>&nbsp;&nbsp; o&nbsp;&nbsp;Dialect or other divisions or variations within a language, its<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;orthography, writing system, regional or historical usage,
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;transliteration or other transformation, or distinguishing<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;variation MAY be registered as variant subtags.&nbsp;&nbsp;An example is the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&#39;rozaj&#39; subtag (the Resian dialect of Slovenian).<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;The addition or maintenance of fields (generally of an
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;informational nature) in Tag or Subtag records as described in<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section 3.1 and subject to the stability provisions in<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section 3.4.&nbsp;&nbsp;This includes descriptions, comments, deprecation<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;and preferred values for obsolete or withdrawn codes, or the
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;addition of script or extlang information to primary language<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;subtags.<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;The addition of records and related field value changes necessary<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;to reflect assignments made by ISO 639, ISO 15924, ISO 3166, and
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;UN M.49 as described in Section 3.4.<br><br>&nbsp;&nbsp; Subtags proposed for registration that would cause all or part of a<br>&nbsp;&nbsp; grandfathered tag to become redundant but whose meaning conflicts<br>&nbsp;&nbsp; with or alters the meaning of the grandfathered tag MUST be rejected.
<br><br>&nbsp;&nbsp; This document leaves the decision on what subtags or changes to<br>&nbsp;&nbsp; subtags are appropriate (or not) to the registration process<br>&nbsp;&nbsp; described in Section 3.5.<br><br>&nbsp;&nbsp; Note: four-character primary language subtags are reserved to allow
<br>&nbsp;&nbsp; for the possibility of alpha4 codes in some future addition to the<br>&nbsp;&nbsp; ISO 639 family of standards.<br><br>&nbsp;&nbsp; ISO 639 defines a maintenance agency for additions to and changes in<br>&nbsp;&nbsp; the list of languages in ISO 639.&nbsp;&nbsp;This agency is:
<br><br>&nbsp;&nbsp; International Information Centre for Terminology (Infoterm)<br>&nbsp;&nbsp; Aichholzgasse 6/12, AT-1120<br>&nbsp;&nbsp; Wien, Austria<br>&nbsp;&nbsp; Phone: +43 1 26 75 35 Ext. 312 Fax: +43 1 216 32 72<br><br>&nbsp;&nbsp; ISO 639-2 defines a maintenance agency for additions to and changes
<br>&nbsp;&nbsp; in the list of languages in ISO 639-2.&nbsp;&nbsp;This agency is:<br><br>&nbsp;&nbsp; Library of Congress<br>&nbsp;&nbsp; Network Development and MARC Standards Office<br>&nbsp;&nbsp; Washington, D.C. 20540 USA<br>&nbsp;&nbsp; Phone: +1 202 707 6237 Fax: +1 202 707 0115
<br>&nbsp;&nbsp; URL: <a href="http://www.loc.gov/standards/iso639-2">http://www.loc.gov/standards/iso639-2</a><br><br>&nbsp;&nbsp; ISO 639-3 defines a maintenance agency for additions to and changes<br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 39]
<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007<br><br><br>&nbsp;&nbsp; in the list of languages in ISO 639-3.&nbsp;&nbsp;This agency is:<br><br>&nbsp;&nbsp; SIL International<br>&nbsp;&nbsp; ISO 639-3 Registrar<br>&nbsp;&nbsp; 7500 W. Camp Wisdom Rd.
<br>&nbsp;&nbsp; Dallas, TX 75236 USA<br>&nbsp;&nbsp; Phone: +1 972 708 7400, ext. 2293 Fax: +1 972 708 7546<br>&nbsp;&nbsp; Email: <a href="mailto:iso639-3@sil.org">iso639-3@sil.org</a><br>&nbsp;&nbsp; URL: <a href="http://www.sil.org/iso639-3">http://www.sil.org/iso639-3
</a><br><br>&nbsp;&nbsp; The maintenance agency for ISO 3166 (country codes) is:<br><br>&nbsp;&nbsp; ISO 3166 Maintenance Agency<br>&nbsp;&nbsp; c/o International Organization for Standardization<br>&nbsp;&nbsp; Case postale 56<br>&nbsp;&nbsp; CH-1211 Geneva 20 Switzerland
<br>&nbsp;&nbsp; Phone: +41 22 749 72 33 Fax: +41 22 749 73 49<br>&nbsp;&nbsp; URL: <a href="http://www.iso.org/iso/en/prods-services/iso3166ma/index.html">http://www.iso.org/iso/en/prods-services/iso3166ma/index.html</a><br><br>&nbsp;&nbsp; The registration authority for ISO 15924 (script codes) is:
<br><br>&nbsp;&nbsp; Unicode Consortium Box 391476<br>&nbsp;&nbsp; Mountain View, CA 94039-1476, USA<br>&nbsp;&nbsp; URL: <a href="http://www.unicode.org/iso15924">http://www.unicode.org/iso15924</a><br><br>&nbsp;&nbsp; The Statistics Division of the United Nations Secretariat maintains
<br>&nbsp;&nbsp; the Standard Country or Area Codes for Statistical Use and can be<br>&nbsp;&nbsp; reached at:<br><br>&nbsp;&nbsp; Statistical Services Branch<br>&nbsp;&nbsp; Statistics Division<br>&nbsp;&nbsp; United Nations, Room DC2-1620<br>&nbsp;&nbsp; New York, NY 10017, USA<br>
<br>&nbsp;&nbsp; Fax: +1-212-963-0623<br>&nbsp;&nbsp; E-mail: <a href="mailto:statistics@un.org">statistics@un.org</a><br>&nbsp;&nbsp; URL: <a href="http://unstats.un.org/unsd/methods/m49/m49alpha.htm">http://unstats.un.org/unsd/methods/m49/m49alpha.htm
</a><br><br>3.7.&nbsp;&nbsp;Extensions and Extensions Registry<br><br>&nbsp;&nbsp; Extension subtags are those introduced by single-character subtags<br>&nbsp;&nbsp; (&quot;singletons&quot;) other than &#39;x&#39;.&nbsp;&nbsp;They are reserved for the generation
<br>&nbsp;&nbsp; of identifiers that contain a language component and are compatible<br>&nbsp;&nbsp; with applications that understand language tags.<br><br>&nbsp;&nbsp; The structure and form of extensions are defined by this document so<br>&nbsp;&nbsp; that implementations can be created that are forward compatible with
<br>&nbsp;&nbsp; applications that might be created using singletons in the future.<br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 40]<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007
<br><br><br>&nbsp;&nbsp; In addition, defining a mechanism for maintaining singletons will<br>&nbsp;&nbsp; lend stability to this document by reducing the likely need for<br>&nbsp;&nbsp; future revisions or updates.<br><br>&nbsp;&nbsp; Single-character subtags are assigned by IANA using the &quot;IETF
<br>&nbsp;&nbsp; Consensus&quot; policy defined by [RFC2434].&nbsp;&nbsp;This policy requires the<br>&nbsp;&nbsp; development of an RFC, which SHALL define the name, purpose,<br>&nbsp;&nbsp; processes, and procedures for maintaining the subtags.&nbsp;&nbsp;The<br>&nbsp;&nbsp; maintaining or registering authority, including name, contact email,
<br>&nbsp;&nbsp; discussion list email, and URL location of the registry, MUST be<br>&nbsp;&nbsp; indicated clearly in the RFC.&nbsp;&nbsp;The RFC MUST specify or include each<br>&nbsp;&nbsp; of the following:<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;The specification MUST reference the specific version or revision
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;of this document that governs its creation and MUST reference this<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;section of this document.<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;The specification and all subtags defined by the specification<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MUST follow the ABNF and other rules for the formation of tags and
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;subtags as defined in this document.&nbsp;&nbsp;In particular, it MUST<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;specify that case is not significant and that subtags MUST NOT<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;exceed eight characters in length.<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;The specification MUST specify a canonical representation.
<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;The specification of valid subtags MUST be available over the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Internet and at no cost.<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;The specification MUST be in the public domain or available via a<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;royalty-free license acceptable to the IETF and specified in the
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;RFC.<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;The specification MUST be versioned, and each version of the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;specification MUST be numbered, dated, and stable.<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;The specification MUST be stable.&nbsp;&nbsp;That is, extension subtags,
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;once defined by a specification, MUST NOT be retracted or change<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;in meaning in any substantial way.<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;The specification MUST include in a separate section the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;registration form reproduced in this section (below) to be used in
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;registering the extension upon publication as an RFC.<br><br>&nbsp;&nbsp; o&nbsp;&nbsp;IANA MUST be informed of changes to the contact information and<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;URL for the specification.<br><br>&nbsp;&nbsp; IANA will maintain a registry of allocated single-character
<br>&nbsp;&nbsp; (singleton) subtags.&nbsp;&nbsp;This registry MUST use the record-jar format<br><br><br><br>Phillips &amp; Davis&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expires February 25, 2008&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Page 41]<br><br>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;langtags-registry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;August 2007
<br><br><br>&nbsp;&nbsp; described by the ABNF in Section 3.1.&nbsp;&nbsp;Upon publication of an<br>&nbsp;&nbsp; extension as an RFC, the maintaining authority defined in the RFC<br>&nbsp;&nbsp; MUST forward this registration form to <a href="mailto:iesg@ietf.org">
iesg@ietf.org</a>, who MUS<br>_______________________________________________<br>Ltru mailing list<br><a href="mailto:Ltru@ietf.org">Ltru@ietf.org</a><br><a href="https://www1.ietf.org/mailman/listinfo/ltru">https://www1.ietf.org/mailman/listinfo/ltru
</a><br><br></blockquote></div><br><br clear="all"><br>-- <br>Mark

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From: "Mark Davis" <mark.davis@icu-project.org>
To: "Addison Phillips" <addison@yahoo-inc.com>
Subject: Re: [Ltru] draft-ietf-ltru-rfc4646bis-08
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Sorry, didn't mean to quote the whole document!

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Sorry, didn&#39;t mean to quote the whole document!<br><br>Mark<br>

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From ltru-bounces@ietf.org Tue Aug 28 12:35:10 2007
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From: "Randy Presuhn" <randy_presuhn@mindspring.com>
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Hi -

Everyone:

When you raise an issue, PLEASE use a new (and hopefully
descriptive) Subject: line.

Things like "Re: [Ltru] draft-ietf-ltru-rfc4646bis-08" are
rarely helpful.

Randy
as ltru co-chair



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From ltru-bounces@ietf.org Tue Aug 28 12:50:32 2007
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Hi -

As co-chair...

We work by rough consensus.  The assessment whether a proposed
edit needs to be made is up to the WG.  If a change is agreed
(and I'm not saying this particular one has been) the editors
need to implement it, whether they personally agree with it or not.
So while as a technical contributor you're certainly expected to
give your views, to avoid confusion please make it clear whether
you're commenting as a technical contributor or as an editor.

As a technical contributor:

While I'm not fond of the existing
text, I also haven't seen a convincing rationale that removing
it would help (or hurt) anything.  As for the proposed change,
I think tacking on the addtional text with a comma would result
in an awkward run-on sentence.  If we were to make a change,
I'd want the added text to be sentence in its own right.  My
net position: leave it alone.  It's not sufficiently broken.

Randy

----- Original Message ----- 
From: "Addison Phillips" <addison@yahoo-inc.com>
To: "Marion Gunn" <mgunn@egt.ie>
Cc: "LTRU Working Group" <ltru@ietf.org>
Sent: Tuesday, August 28, 2007 6:53 AM
Subject: Re: [Ltru] draft-ietf-ltru-rfc4646bis-08


Marion,

This text has existed for a long time. In fact, it is taken verbatim
from RFC 3066 (RFC 1766 had a similar, but different, sentence). This
isn't a substantive edit and doesn't address the real open issue in our
draft, which is how to handle extlangs.

Regards,

Addison

Marion Gunn wrote:
> For starters, suggest losing the entire first sentence of paragraph 1
> below, inserting the word "human" before "language" in its second
> sentence and inserting the following comma-plus-clause text ", such
> reasons as are set out below" before its closing full stop.
> mg
>
>
> On 24 Aug 2007, at 21:59, scríobh Addison Phillips:
>
>
>> Phillips & Davis        Expires February 25, 2008               [Page 3]
>> Internet-Draft              langtags-registry                August 2007
>>
>>
>> 1.  Introduction
>>
>>    Human beings on our planet have, past and present, used a number of
>>    languages.  There are many reasons why one would want to identify the
>>    language used when presenting or requesting information.
>>
>>
>
> -- 
> Marion Gunn
> mgunn@ucd.ie
>
> _______________________________________________
> Ltru mailing list
> Ltru@ietf.org
> https://www1.ietf.org/mailman/listinfo/ltru

-- 
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.


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From: "Randy Presuhn" <randy_presuhn@mindspring.com>
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Hi -


> From: "Mark Davis" <mark.davis@icu-project.org>
> To: "Addison Phillips" <addison@yahoo-inc.com>
> Cc: "LTRU Working Group" <ltru@ietf.org>
> Sent: Tuesday, August 28, 2007 7:07 AM
> Subject: Re: [Ltru] draft-ietf-ltru-rfc4646bis-08
>
> Just to open up the discussion, the biggest problem with this version is
> that it uses a substantial new mechanism (extlang) which was not used in RFC
> 4646, and for which there is no consensus in this group to use in RFC
> 4646bis. We haven't removed extlang from the draft yet, but the people that
> want this new mechanism need to provide justification, that:
> 
>    1. it is substantially better to have languages like 'cmn' be put in a
>    secondary position (eg zh-cmn-Hant-CN), rather than being primary subtags on
>    their own (eg cmn-Hant-CN).
>    2. it is sufficiently better to warrant making the language tags more
>    complicated by the addition of this mechanism.
> 
> Mark

As a co-chair trying to help the discussion, I've extracted
the passages I could find where "extlang" appears.  I think
it is helpful to read through these, even with the limited context.

> >    language      = (2*3ALPHA [ extlang ]) ; shortest ISO 639 code
> >                  / 4ALPHA                 ; reserved for future use
> >                  / 5*8ALPHA               ; registered language subtag
> >
> >    extlang       = *3("-" 3ALPHA)         ; specific ISO 639-3 codes

> >    o  'Type'
> >
> >       *  Type's field-body MUST consist of one of the following strings:
> >          "language", "extlang", "script", "region", "variant",
> >          "grandfathered", and "redundant" and denotes the type of tag or
> >          subtag.
> >
> >    o  Either 'Subtag' or 'Tag'
> >
> >       *  Subtag's field-body contains the subtag being defined.  This
> >          field MUST only appear in records of whose 'Type' has one of
> >          these values: "language", "extlang", "script", "region", or
> >          "variant".

> >    o  Preferred-Value
> >
> >       *  For fields of type 'script', 'region', and 'variant',
> >          'Preferred-Value' contains the subtag of the same 'Type' that
> >          is preferred for forming the language tag.
> >
> >       *  For fields of type 'language' and 'extlang', 'Preferred-Value'
> >          contains the language production (see Figure 1) that is
> >          preferred when forming the language tag.  This can be simply a
> >          'language' subtag, or it can be a 'language' subtag followed by
> >          an extended language sequence.

> >    For records taken from a source standard (such as ISO 639 or ISO
> >    3166), the 'Description' value(s) SHOULD also be taken from the
> >    source standard.  Multiple descriptions in the source standard MUST
> >    be split into separate 'Description' fields.  The source standard's
> >    descriptions MAY be edited, either prior to insertion or via the
> >    registration process.  For fields of type 'language' or 'extlang',
> >    the first 'Description' field appearing in the Registry corresponds
> >    to the Reference Name assigned by ISO 639-3.  This helps facilitate
> >    cross-referencing between ISO 639 and the registry.

> >    Records of type 'extlang' MUST have _exactly_ one 'Prefix' field.

> >    This field can be useful to applications or users when selecting
> >    language tags or as additional metadata useful in matching.  The
> >    Macrolanguage field can only occur in records of type 'language' or
> >    'extlang'.  Only values assigned by ISO 639-3 will be considered for
> >    inclusion.  Macrolanguage fields MAY be added or removed via the
> >    normal registration process whenever ISO 639-3 defines new values.
> >    Macrolanguages are informational, and MAY be removed or changed if
> >    ISO 639-3 changes the values.

> >    5.   Values in the field 'Prefix' in records of type 'extlang' MUST
> >         NOT be modified.

> >         1.  Codes that have a defined "macrolanguage" mapping at the
> >             time of their registration MUST be entered into the registry
> >             as records of type 'extlang' with a 'Prefix' field
> >             containing the appropriate prefix tag.  They MUST also
> >             include a "Macrolanguage" field in their record.

> >
> >         2.  Codes that represent sign languages MUST be entered into the
> >             registry as record of type 'extlang' with a 'Prefix' field
> >             that matches the Basic Language Range "sgn" (see Section
> >             3.3.1 "Basic Filtering" in [RFC4647]).

> >    13.  A record of type 'language' or 'extlang' MUST NOT be registered
> >         if there exists a record of either type with the same subtag
> >         value.  For example, if an 'extlang' subtag 'foo' exists in the
> >         registry, all attempts to register a 'language' subtag 'foo'
> >         will be rejected.

> >    o  The addition or maintenance of fields (generally of an
> >       informational nature) in Tag or Subtag records as described in
> >       Section 3.1 and subject to the stability provisions in
> >       Section 3.4.  This includes descriptions, comments, deprecation
> >       and preferred values for obsolete or withdrawn codes, or the
> >       addition of script or extlang information to primary language
> >       subtags.


Randy 



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From ltru-bounces@ietf.org Tue Aug 28 14:02:50 2007
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From: Marion Gunn <mgunn@egt.ie>
Subject: Re: [Ltru] draft-ietf-ltru-rfc4646bis-08
Date: Tue, 28 Aug 2007 19:02:49 +0000
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First impressions are important, so - however long that particular =20
expression has been in there - it is common knowledge that texts =20
starting "on our planet" tend not to be taken seriously and that such =20=

expressions tend only detract/distract somewhat, from the substance =20
of a document without adding anything of substance to it. By all =20
means leave it in, if you disagree with the above.

For ease of reference and for the sake of new readers, I'd also like =20
to see "Definitions" fronted in the document, pace the ISO practice =20
of fronting "Scope" and "Definitions", and to see "extlang" defined =20
under "Definitions", as one of the many relevant terms (defined as a =20
group of concepts) to be grasped, before describing how all those =20
bits are meant to work together. If this means cutting and pasting in =20=

definitions straight out of other documents, that is fine and good =20
for consistency checks across documents.

I didn't address the question of handling extlangs simply because I =20
am currently not at all sure how to do so.
mg

On 28 Aug 2007, at 13:53, scr=EDobh Addison Phillips:

> Marion,
>
> This text has existed for a long time. In fact, it is taken =20
> verbatim from RFC 3066 (RFC 1766 had a similar, but different, =20
> sentence). This isn't a substantive edit and doesn't address the =20
> real open issue in our draft, which is how to handle extlangs.
>
> Regards,
>
> Addison

- -
Marion Gunn * EGTeo (Estab.1991)
27 P=E1irc an Fh=E9ithlinn, Baile an
Bh=F3thair, Co. =C1tha Cliath, =C9ire.
* mgunn@egt.ie * eamonn@egt.ie *



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From: Marion Gunn <mgunn@egt.ie>
Subject: Re: [Ltru] extlang
Date: Tue, 28 Aug 2007 19:15:50 +0000
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On 28 Aug 2007, at 17:10, scr=EDobh Randy Presuhn:
>
> As a co-chair trying to help the discussion, I've extracted
> the passages I could find where "extlang" appears.

Good work.

> I think
> it is helpful to read through these, even with the limited context.

Sorry, I still cannot glean enough from that to offer a useful =20
opinion on handling extlangs, so I leave that to others (it is the =20
end of day here in Ireland).
mg

- -
Marion Gunn * EGTeo (Estab.1991)
27 P=E1irc an Fh=E9ithlinn, Baile an
Bh=F3thair, Co. =C1tha Cliath, =C9ire.
* mgunn@egt.ie * eamonn@egt.ie *



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From: Marion Gunn <mgunn@egt.ie>
Subject: Re: [Ltru] first paragraph of draft-ietf-ltru-rfc4646bis-08
Date: Tue, 28 Aug 2007 19:20:16 +0000
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First impressions are important, so - however long that particular =20
expression has been in there - it is common knowledge that texts =20
starting "on our planet" tend not to be taken seriously and that such =20=

expressions tend more to detract/distract somewhat, from the =20
substance of a document than add substance to it. By all means leave =20
it in, if you disagree with the above.

For ease of reference and for the sake of new readers, I'd also like =20
to see "Definitions" fronted in the document, pace the ISO practice =20
of fronting "Scope" and "Definitions", and to see "extlang" defined =20
under "Definitions", as one of the many relevant terms (defined as a =20
group of concepts) to be grasped, before describing how all those =20
bits are meant to work together. If this means cutting and pasting in =20=

definitions straight out of other documents, that is fine and good =20
for consistency checks across documents.

I didn't address the question of handling extlangs simply because I =20
am currently not at all sure how to do so.
mg

On 28 Aug 2007, at 13:53, scr=EDobh Addison Phillips:



> Marion,
>
> This text has existed for a long time. In fact, it is taken =20
> verbatim from RFC 3066 (RFC 1766 had a similar, but different, =20
> sentence). This isn't a substantive edit and doesn't address the =20
> real open issue in our draft, which is how to handle extlangs.
>
> Regards,
>
> Addison
>

- -
Marion Gunn * EGTeo (Estab.1991)
27 P=E1irc an Fh=E9ithlinn, Baile an
Bh=F3thair, Co. =C1tha Cliath, =C9ire.
* mgunn@egt.ie * eamonn@egt.ie *



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Hi -

As co-chair: PLEASE remember to use a new subject line
when you raise a new issue.

Randy

> From: "Marion Gunn" <mgunn@egt.ie>
> To: "LTRU Working Group" <ltru@ietf.org>
> Sent: Tuesday, August 28, 2007 12:20 PM
> Subject: Re: [Ltru] first paragraph of draft-ietf-ltru-rfc4646bis-08
...
> For ease of reference and for the sake of new readers, I'd also like  
> to see "Definitions" fronted in the document, pace the ISO practice  
> of fronting "Scope" and "Definitions", and to see "extlang" defined  
> under "Definitions", as one of the many relevant terms (defined as a  
> group of concepts) to be grasped, before describing how all those  
> bits are meant to work together. If this means cutting and pasting in  
> definitions straight out of other documents, that is fine and good  
> for consistency checks across documents.
...



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Mark Davis scripsit:

> Just to open up the discussion, the biggest problem with this version is
> that it uses a substantial new mechanism (extlang) which was not used in RFC
> 4646, and for which there is no consensus in this group to use in RFC
> 4646bis.

As far as the record appears, there is no consensus because you are
single-handedly blocking it.

> We haven't removed extlang from the draft yet,

"We haven't yet" implicatures "We will", as you well know.  Its use here
is quite inappropriate.

> but the people that want this new mechanism need to provide
> justification,

This mechanism has long been planned, but was held up pending the
publication and stabilization of ISO 639-3.  It is you who wish to change
the plan, and therefore you who bear the burden of persuasion.

>    1. it is substantially better to have languages like 'cmn' be put in a
>    secondary position (eg zh-cmn-Hant-CN), rather than being primary subtags on
>    their own (eg cmn-Hant-CN).

It is better because all documents in Sinitic languages have been
historically tagged "zh", most of them are in Mandarin, and allowing "cmn"
as a primary language tag will break people who expect "zh" to Just Work.
Furthermore, people who have been using "zh-yue" for Cantonese should
not have to switch to "yue" to allow flexibilities such as adding script,
region, or variant tags.  (Currently "zh-yue" is grandfathered and cannot
be used generatively.)

>    2. it is sufficiently better to warrant making the language tags more
>    complicated by the addition of this mechanism.

Language tags become more complicated *if* it is desired to make them
so.  Those who find "zh" sufficient may continue to use it while still
interoperating with "zh-cmn", "zh-yue", and so on.  Existing deployed
matchers will continue to work, as will existing deployed software
that understands specific tags; they will not need to become more
complicated to understand the out-of-band relationship between "zh",
"cmn", "yue", etc.

-- 
A mosquito cried out in his pain,               John Cowan
"A chemist has poisoned my brain!"              http://www.ccil.org/~cowan
        The cause of his sorrow                 cowan@ccil.org
        Was para-dichloro-
Diphenyltrichloroethane.                                (aka DDT)


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--NextPart

A New Internet-Draft is available from the on-line Internet-Drafts 
directories.
This draft is a work item of the Language Tag Registry Update Working Group of the IETF.

	Title		: Tags for Identifying Languages
	Author(s)	: A. Phillips, M. Davis
	Filename	: draft-ietf-ltru-4646bis-08.txt
	Pages		: 74
	Date		: 2007-8-28
	
This document describes the structure, content, construction, and
   semantics of language tags for use in cases where it is desirable to
   indicate the language used in an information object.  It also
   describes how to register values for use in language tags and the
   creation of user-defined extensions for private interchange.

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On 8/28/07, John Cowan <cowan@ccil.org> wrote:
>
> Mark Davis scripsit:
>
> > Just to open up the discussion, the biggest problem with this version is
> > that it uses a substantial new mechanism (extlang) which was not used in
> RFC
> > 4646, and for which there is no consensus in this group to use in RFC
> > 4646bis.
>
> As far as the record appears, there is no consensus because you are
> single-handedly blocking it.


Not single-handedly: Addison has also commented on it. And on the other
side, I've heard 3 strong proponents. So not exactly overwhelming either
way.

> We haven't removed extlang from the draft yet,
>
> "We haven't yet" implicatures "We will", as you well know.  Its use here
> is quite inappropriate.


I think you are being overly sensitive here. I clearly don't want extlang
in, but the "yet" is only indicating that it is still in the draft. And
leaving it in until we come to a conclusion is reasonable, since it is less
work if we decide we want it.

> but the people that want this new mechanism need to provide
> > justification,
>
> This mechanism has long been planned, but was held up pending the
> publication and stabilization of ISO 639-3.  It is you who wish to change
> the plan, and therefore you who bear the burden of persuasion.


I've said before, and will say again: it was never a foregone conclusion. I
as one of the authors would never have agreed to add a major structure that
was not fully fleshed out, in advance of having a completed standard AND
having had a chance to test that structure in practice. Because we were
locking down the syntax, we wanted to ENABLE the addition of extlang should
the group decide that it was worth adding. Do I really have to repeat this
over and over????

>    1. it is substantially better to have languages like 'cmn' be put in a
> >    secondary position (eg zh-cmn-Hant-CN), rather than being primary
> subtags on
> >    their own (eg cmn-Hant-CN).
>
> It is better because all documents in Sinitic languages have been
> historically tagged "zh", most of them are in Mandarin, and allowing "cmn"
> as a primary language tag will break people who expect "zh" to Just Work.
> Furthermore, people who have been using "zh-yue" for Cantonese should
> not have to switch to "yue" to allow flexibilities such as adding script,
> region, or variant tags.  (Currently "zh-yue" is grandfathered and cannot
> be used generatively.)


You are not revealing some important hidden assumptions in your statements.

   1. The macrolanguage is always a better fallback for every encompassed
   language than other alternatives. Out of the many encompassed languages, you
   implying that a speaker of every encompassed language will be able to
   understand the macrolanguage, or at least better than the alteratives.
   2. People don't lose anything by having the fallback. I dispute this
   as well. As previously noted:
   1. Truncation fallback from zh-cmn-Hant-SG to "zh" loses the Hant and
      the SG; falling back from ar-arb-SA to 'ar' loses the "SA".
      2. It introduces ambiguous language names. Right now, in the
      overwhelming majority of practice, standard Arabic is "ar"; after the
      change, standard Arabic is "ar-arb".
   3. People can't get along without this.
   1. Anyone who has to deal with language issues on all but a trivial
      level must already have a mechanism to deal with sh, sr, hr; with no, nb,
      nn. Those are macrolanguages and encompassed languages. They
exist right now
      WITHOUT an extlang mechanism, and people deal with them. The proposed
      mechanism won't handle these, and anyone who can handle these
doesn't need
      extlang.
      2. With the Macrolanguage field, there is sufficient information
      for *anyone* who wants to to implement extlang-like fallback
(including for
      sh or no), *without* encumbering the IDs with superfluous information.


>    2. it is sufficiently better to warrant making the language tags more
> >    complicated by the addition of this mechanism.
>
> Language tags become more complicated *if* it is desired to make them
> so.  Those who find "zh" sufficient may continue to use it while still
> interoperating with "zh-cmn", "zh-yue", and so on.  Existing deployed
> matchers will continue to work, as will existing deployed software
> that understands specific tags; they will not need to become more
> complicated to understand the out-of-band relationship between "zh",
> "cmn", "yue", etc.


This is untrue. As soon as we implemented extlang in prototype, we ran into
the problems listed above. It *didn't* work out of the box.

--
> A mosquito cried out in his pain,               John Cowan
> "A chemist has poisoned my brain!"              http://www.ccil.org/~cowan
>         The cause of his sorrow                 cowan@ccil.org
>         Was para-dichloro-
> Diphenyltrichloroethane.                                (aka DDT)
>



-- 
Mark

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<br><br><div><span class="gmail_quote">On 8/28/07, <b class="gmail_sendername">John Cowan</b> &lt;<a href="mailto:cowan@ccil.org">cowan@ccil.org</a>&gt; wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Mark Davis scripsit:<br><br>&gt; Just to open up the discussion, the biggest problem with this version is<br>&gt; that it uses a substantial new mechanism (extlang) which was not used in RFC<br>&gt; 4646, and for which there is no consensus in this group to use in RFC
<br>&gt; 4646bis.<br><br>As far as the record appears, there is no consensus because you are<br>single-handedly blocking it.</blockquote><div><br>Not single-handedly: Addison has also commented on it. And on the other side, I&#39;ve heard 3 strong proponents. So not exactly overwhelming either way.
<br></div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">&gt; We haven&#39;t removed extlang from the draft yet,<br><br>&quot;We haven&#39;t yet&quot; implicatures &quot;We will&quot;, as you well know.&nbsp;&nbsp;Its use here
<br>is quite inappropriate.</blockquote><div><br>I think you are being overly sensitive here. I clearly don&#39;t want extlang in, but the &quot;yet&quot; is only indicating that it is still in the draft. And leaving it in until we come to a conclusion is reasonable, since it is less work if we decide we want it.
<br></div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">&gt; but the people that want this new mechanism need to provide<br>&gt; justification,
<br><br>This mechanism has long been planned, but was held up pending the<br>publication and stabilization of ISO 639-3.&nbsp;&nbsp;It is you who wish to change<br>the plan, and therefore you who bear the burden of persuasion.</blockquote>
<div><br>I&#39;ve said before, and will say again: it was never a foregone conclusion. I as one of the authors would never have agreed to add a major structure that was not fully fleshed out, in advance of having a completed standard AND having had a chance to test that structure in practice. Because we were locking down the syntax, we wanted to ENABLE the addition of extlang should the group decide that it was worth adding. Do I really have to repeat this over and over????
<br></div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">&gt;&nbsp;&nbsp;&nbsp;&nbsp;1. it is substantially better to have languages like &#39;cmn&#39; be put in a
<br>&gt;&nbsp;&nbsp;&nbsp;&nbsp;secondary position (eg zh-cmn-Hant-CN), rather than being primary subtags on<br>&gt;&nbsp;&nbsp;&nbsp;&nbsp;their own (eg cmn-Hant-CN).<br><br>It is better because all documents in Sinitic languages have been<br>historically tagged &quot;zh&quot;, most of them are in Mandarin, and allowing &quot;cmn&quot;
<br>as a primary language tag will break people who expect &quot;zh&quot; to Just Work.<br>Furthermore, people who have been using &quot;zh-yue&quot; for Cantonese should<br>not have to switch to &quot;yue&quot; to allow flexibilities such as adding script,
<br>region, or variant tags.&nbsp;&nbsp;(Currently &quot;zh-yue&quot; is grandfathered and cannot<br>be used generatively.)</blockquote><div><br>You are not revealing some important hidden assumptions in your statements.<br><ol><li>
The macrolanguage is always a better fallback for every encompassed language than other alternatives. Out of the many encompassed languages, you implying that a speaker of every encompassed language will be able to understand the macrolanguage, or at least better than the alteratives.
</li><li>People don&#39;t lose anything by having the fallback. I dispute this as well. As previously noted:<br></li><ol><li>Truncation fallback from zh-cmn-Hant-SG to &quot;zh&quot; loses the Hant and the SG; falling back from ar-arb-SA to &#39;ar&#39; loses the &quot;SA&quot;.
</li><li>It introduces ambiguous language names. Right now, in the overwhelming majority of practice, standard Arabic is &quot;ar&quot;; after the change, standard Arabic is &quot;ar-arb&quot;.</li></ol><li>People can&#39;t get along without this. 
<br></li><ol><li>Anyone who has to deal with language issues on all but a trivial level must already have a
mechanism to deal with sh, sr, hr; with no, nb, nn. Those are
macrolanguages and encompassed languages. They exist right now WITHOUT
an extlang mechanism, and people deal with them. The proposed mechanism won&#39;t handle these, and anyone who can handle these doesn&#39;t need extlang.</li><li>With the Macrolanguage field, there is sufficient information for *anyone* who wants to to implement extlang-like fallback (including for sh or no), *without* encumbering the IDs with superfluous information.
<br></li></ol></ol></div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">&gt;&nbsp;&nbsp;&nbsp;&nbsp;2. it is sufficiently better to warrant making the language tags more
<br>&gt;&nbsp;&nbsp;&nbsp;&nbsp;complicated by the addition of this mechanism.<br><br>Language tags become more complicated *if* it is desired to make them<br>so.&nbsp;&nbsp;Those who find &quot;zh&quot; sufficient may continue to use it while still<br>
interoperating with &quot;zh-cmn&quot;, &quot;zh-yue&quot;, and so on.&nbsp;&nbsp;Existing deployed<br>matchers will continue to work, as will existing deployed software<br>that understands specific tags; they will not need to become more
<br>complicated to understand the out-of-band relationship between &quot;zh&quot;,<br>&quot;cmn&quot;, &quot;yue&quot;, etc.</blockquote><div><br>This is untrue. As soon as we implemented extlang in prototype, we ran into the problems listed above. It *didn&#39;t* work out of the box.
<br></div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">--<br>A mosquito cried out in his pain,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; John Cowan<br>&quot;A chemist has poisoned my brain!&quot;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<a href="http://www.ccil.org/~cowan">http://www.ccil.org/~cowan</a><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The cause of his sorrow&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href="mailto:cowan@ccil.org">cowan@ccil.org</a><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Was para-dichloro-<br>Diphenyltrichloroethane.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(aka DDT)
<br></blockquote></div><br><br clear="all"><br>-- <br>Mark

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From: "Mark Davis" <mark.davis@icu-project.org>
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As a straw poll, where do people stand on extlang? That is, vis-a-vis the
question of using extlang in RFC4646bis to contain 639-3 macrolanguages, do
you:

   1. Strongly favor having extlang
   2. Favor having extlang, but don't mind too much if it were not in
   3. Don't care much either way
   4. Favor not having extlang, but don't mind too much if it were in
   5. Strongly favor not having extlang

Mark

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As a straw poll, where do people stand on extlang? That is, vis-a-vis the question of using extlang in RFC4646bis to contain 639-3 macrolanguages, do you:<br><ol><li>Strongly favor having extlang</li><li>Favor having extlang, but don&#39;t mind too much if it were not in
</li><li>Don&#39;t care much either way</li><li>Favor not having extlang, but don&#39;t mind too much if it were in</li><li>Strongly favor not having extlang</li></ol>Mark<br>

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I'm not sure the question is clear. Extlang would contain the 
"microlanguages" from 639-3, such as "cmn",  right?

Karen




"Mark Davis" <mark.davis@icu-project.org> 
08/28/2007 03:04 PM

To
"LTRU Working Group" <ltru@ietf.org>
cc

Subject
[Ltru] extlang straw poll






As a straw poll, where do people stand on extlang? That is, vis-a-vis the 
question of using extlang in RFC4646bis to contain 639-3 macrolanguages, 
do you:
1.      Strongly favor having extlang
2.      Favor having extlang, but don't mind too much if it were not in 
3.      Don't care much either way
4.      Favor not having extlang, but don't mind too much if it were in
5.      Strongly favor not having extlang
Mark_______________________________________________
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<br><font size=2 face="sans-serif">I'm not sure the question is clear.
Extlang would contain the &quot;microlanguages&quot; from 639-3, such as
&quot;cmn&quot;, &nbsp;right?</font>
<br>
<br><font size=2 face="sans-serif">Karen</font>
<br>
<br>
<br>
<br>
<table width=100%>
<tr valign=top>
<td width=40%><font size=1 face="sans-serif"><b>&quot;Mark Davis&quot;
&lt;mark.davis@icu-project.org&gt;</b> </font>
<p><font size=1 face="sans-serif">08/28/2007 03:04 PM</font>
<td width=59%>
<table width=100%>
<tr valign=top>
<td>
<div align=right><font size=1 face="sans-serif">To</font></div>
<td><font size=1 face="sans-serif">&quot;LTRU Working Group&quot; &lt;ltru@ietf.org&gt;</font>
<tr valign=top>
<td>
<div align=right><font size=1 face="sans-serif">cc</font></div>
<td>
<tr valign=top>
<td>
<div align=right><font size=1 face="sans-serif">Subject</font></div>
<td><font size=1 face="sans-serif">[Ltru] extlang straw poll</font></table>
<br>
<table>
<tr valign=top>
<td>
<td></table>
<br></table>
<br>
<br>
<br><font size=3>As a straw poll, where do people stand on extlang? That
is, vis-a-vis the question of using extlang in RFC4646bis to contain 639-3
macrolanguages, do you:</font>
<br><font size=2 face="sans-serif">1. &nbsp; &nbsp; &nbsp; &nbsp;</font><font size=3>Strongly
favor having extlang</font>
<br><font size=2 face="sans-serif">2. &nbsp; &nbsp; &nbsp; &nbsp;</font><font size=3>Favor
having extlang, but don't mind too much if it were not in </font>
<br><font size=2 face="sans-serif">3. &nbsp; &nbsp; &nbsp; &nbsp;</font><font size=3>Don't
care much either way</font>
<br><font size=2 face="sans-serif">4. &nbsp; &nbsp; &nbsp; &nbsp;</font><font size=3>Favor
not having extlang, but don't mind too much if it were in</font>
<br><font size=2 face="sans-serif">5. &nbsp; &nbsp; &nbsp; &nbsp;</font><font size=3>Strongly
favor not having extlang</font>
<br><font size=3>Mark</font><tt><font size=2>_______________________________________________<br>
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</font></tt>
<br>
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Hi -

As a technical contributor...

> From: "Mark Davis" <mark.davis@icu-project.org>
> To: "John Cowan" <cowan@ccil.org>
> Cc: "LTRU Working Group" <ltru@ietf.org>
> Sent: Tuesday, August 28, 2007 2:59 PM
> Subject: [Ltru] extlang
...
> You are not revealing some important hidden assumptions in your statements.
> 
>    1. The macrolanguage is always a better fallback for every encompassed
>    language than other alternatives. Out of the many encompassed languages, you
>    implying that a speaker of every encompassed language will be able to
>    understand the macrolanguage, or at least better than the alteratives.

I don't see how the use of extlang would require this as an assumption.
Making such an assumption seems a bit like assuming that all languages whose
tags begin in "a" are somehow related.

>    2. People don't lose anything by having the fallback. I dispute this
>    as well. As previously noted:
>    1. Truncation fallback from zh-cmn-Hant-SG to "zh" loses the Hant and
>       the SG; falling back from ar-arb-SA to 'ar' loses the "SA".

It is the nature of truncation fallback to lose information.  No matter
what order the subtags are trimmed off, someone will be able to argue
that for some particular case, a different order might have been better.
This isn't an argument against extlang; it's an argument against unrealistically
high expectations for truncation fallback.

>       2. It introduces ambiguous language names. Right now, in the
>       overwhelming majority of practice, standard Arabic is "ar"; after the
>       change, standard Arabic is "ar-arb".

This would not be desirable.  However, I wonder whether the semantic associated
by most taggers and users of tags with "ar" is "standard Arabic" or merely "Arabic".

>    3. People can't get along without this.
>    1. Anyone who has to deal with language issues on all but a trivial
>       level must already have a mechanism to deal with sh, sr, hr; with no, nb,
>       nn. Those are macrolanguages and encompassed languages. They
> exist right now
>       WITHOUT an extlang mechanism, and people deal with them. The proposed
>       mechanism won't handle these, and anyone who can handle these
> doesn't need
>       extlang.

I think this argument is flawed in that it neglects the cost of supporting
such constellations of languages.  There are already some messes that we're
stuck with, and that have to be handled in an ad hoc manner.  This doesn't
justify requiring ad hoc handling for every other such constellation of
languages.

>       2. With the Macrolanguage field, there is sufficient information
>       for *anyone* who wants to to implement extlang-like fallback
> (including for
>       sh or no), *without* encumbering the IDs with superfluous information.

This would be a compelling argument, if fallback were the sole reason for extlang.
However, fallback is not the sole motivation for extlangs; they are also
of use to taggers with incomplete knowledge of the languages used in the
materials they are tagging.  The library staff in my home town would be
doing well if they correctly recognized material as "zh" or "ar".  It would
be quite unrealistic to expect them to be any more precise.

Of course we'd all like everyone who has to tag material to have perfect
knowledge of the languages involved so that tags with sufficient precision
and accuracy would be used.  But we also know that in reality people work
with incomplete knowledge.  Consequently, I think we should allow people to
who by necessity tag with low precision to nonetheless do so accurately.

> > >    2. it is sufficiently better to warrant making the language tags more
> > >    complicated by the addition of this mechanism.
> >
> > Language tags become more complicated *if* it is desired to make them
> > so.  Those who find "zh" sufficient may continue to use it while still
> > interoperating with "zh-cmn", "zh-yue", and so on.  Existing deployed
> > matchers will continue to work, as will existing deployed software
> > that understands specific tags; they will not need to become more
> > complicated to understand the out-of-band relationship between "zh",
> > "cmn", "yue", etc.
> 
> 
> This is untrue. As soon as we implemented extlang in prototype, we ran into
> the problems listed above. It *didn't* work out of the box.

I'm missing something.  Precisely what scenario was it that was expected to
work that did not?

Randy



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Mark Davis scripsit:

> Not single-handedly: Addison has also commented on it. 

AFAIK he has acquiesced in, but not defended, your position.
(I may be wrong.)

> And on the other side, I've heard 3 strong proponents. So not exactly
> overwhelming either way.

FWIW, I have heard privately from several normally active listmembers
supporting my position.  I assume that you know I wouldn't lie about this.

> I've said before, and will say again: it was never a foregone conclusion. 

I have never said so.  I do say that it is the status quo, and it's
a change to the status quo that requires defending.

> Do I really have to repeat this over and over????

Alas, we do seem to be looping.  I wish I saw the way ahead.

>    1. The macrolanguage is always a better fallback for every encompassed
>    language than other alternatives. Out of the many encompassed languages, you
>    implying that a speaker of every encompassed language will be able to
>    understand the macrolanguage, or at least better than the alteratives.

RFC 1766 already said that fallback doesn't always work, and sometimes
produces something unintelligible to the requester.

But I believe you are misusing the term "macrolanguage".  A macrolanguage
is not to be equated with a "main" or standardized variety.  Some
macrolanguages like Chinese and Arabic have such varieties, others like
Quechua and Nahuatl do not.

Rather, a macrolanguage is a group of languages that *in some domain*
is recognized as a single language.  By definition, if you speak
Sudan Arabic, you are speaking something that is part of the Arabic
macrolanguage, even if you cannot speak modern standard Arabic at all.
Thus it may be empirically sound to assume that anything (or at least
any text) tagged "ar" is in MSA, it is not certain.

>    1. Truncation fallback from zh-cmn-Hant-SG to "zh" loses the Hant and
>       the SG; falling back from ar-arb-SA to 'ar' loses the "SA".

So it does.

>       2. It introduces ambiguous language names. Right now, in the
>       overwhelming majority of practice, standard Arabic is "ar"; after the
>       change, standard Arabic is "ar-arb".

You propose in the alternative that "ar" and "arb" both be understood
as modern standard Arabic.  I submit that that is worse.

>    1. Anyone who has to deal with language issues on all but a trivial
>       level must already have a mechanism to deal with sh, sr, hr;
>       with no, nb, nn. Those are macrolanguages and encompassed
>       languages. They exist right now WITHOUT an extlang mechanism,
>       and people deal with them. The proposed mechanism won't handle
>       these, and anyone who can handle these doesn't need extlang.

True, but not everyone does.  As I have said before, the majority of
language-sensitive applications, I believe, deal only with recognizing a
short list of languages that they know what to do with, and all others
have the semantics of "unknown language".  It's perfectly compliant
just to look at the first subtag, decide if it is 'en', 'fr', or 'ar',
and throw away all other information; furthermore, I believe this to
be typical.  Most applications just don't involve processing almost
every document known to man.  I want this sort of application to continue
to work without having to be modified to add "arb" as a fourth alternative.

>       2. With the Macrolanguage field, there is sufficient information
>       for *anyone* who wants to to implement extlang-like fallback
>       (including for sh or no), *without* encumbering the IDs with
>       superfluous information.

I support the Macrolanguage: field for the uses which you mention.
Furthermore, I support extlangs *only* in the context of using newly
introduced 639-3 identifiers that are encompassed by a macrolanguage
registered in 639-2.  Thus, I do *not* support changes to language
tags based on shifting macrolanguage information as SIL learns more,
just the 350+ specific code elements of 639-3, and no more.

> This is untrue. As soon as we implemented extlang in prototype, we ran into
> the problems listed above. It *didn't* work out of the box.

I can well understand that in certain applications having an unusual
breadth of scope, both in the matter of documents and in the matter
of languages, that it might well not.

-- 
Dream projects long deferred             John Cowan <cowan@ccil.org>
usually bite the wax tadpole.            http://www.ccil.org/~cowan
        --James Lileks


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Mark Davis scripsit:

>    1. Strongly favor having extlang

I fall in this camp, of course, but with the caveat noted in my
previous posting:  once and only once, no further changes after
RFC 4646bis adoption.


-- 
John Cowan              cowan@ccil.org          http://www.ccil.org/~cowan
Historians aren't constantly confronted with people who carry on
self-confidently about the rule against adultery in the sixth amendment to
the Declamation of Independence, as written by Benjamin Hamilton. Computer
scientists aren't always having to correct people who make bold assertions
about the value of Objectivist Programming, as examplified in the HCNL
entities stored in Relaxational Databases.  --Mark Liberman


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From: "Randy Presuhn" <randy_presuhn@mindspring.com>
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Hi -

As co-chair...

>From a process perspective, while I like getting a sense of whether we have
any contributors in the "can't live with" or "can't live without" camps,
I'm afraid that "having extlang" needs to be teased apart a little more
carefully first.  The devils are generally in the details, and at this
point it's still not clear to me whether objections are to the concept
itself or to details of the current proposal.  For example, some might
have lingering worries about having more than one way to tag a language, or
what the consequences for sgn- might be if extlang is removed.  Consequently,
we need to be sure we understand what the current proposal for extlang really
means, and work through any suggestions for modifying it, before we can address
the question of whether to eliminate it altogether.

Randy

> From: "Mark Davis" <mark.davis@icu-project.org>
> To: "LTRU Working Group" <ltru@ietf.org>
> Sent: Tuesday, August 28, 2007 3:04 PM
> Subject: [Ltru] extlang straw poll
>
> As a straw poll, where do people stand on extlang? That is, vis-a-vis the
> question of using extlang in RFC4646bis to contain 639-3 macrolanguages, do
> you:
> 
>    1. Strongly favor having extlang
>    2. Favor having extlang, but don't mind too much if it were not in
>    3. Don't care much either way
>    4. Favor not having extlang, but don't mind too much if it were in
>    5. Strongly favor not having extlang
> 
> Mark
> 


--------------------------------------------------------------------------------


> _______________________________________________
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If you don't want to have a straw poll at this point that's fine. But then
John needs to stop saying I'm the only one standing in the way of the train
;-)

Mark

On 8/28/07, Randy Presuhn <randy_presuhn@mindspring.com> wrote:
>
> Hi -
>
> As co-chair...
>
> >From a process perspective, while I like getting a sense of whether we
> have
> any contributors in the "can't live with" or "can't live without" camps,
> I'm afraid that "having extlang" needs to be teased apart a little more
> carefully first.  The devils are generally in the details, and at this
> point it's still not clear to me whether objections are to the concept
> itself or to details of the current proposal.  For example, some might
> have lingering worries about having more than one way to tag a language,
> or
> what the consequences for sgn- might be if extlang is
> removed.  Consequently,
> we need to be sure we understand what the current proposal for extlang
> really
> means, and work through any suggestions for modifying it, before we can
> address
> the question of whether to eliminate it altogether.
>
> Randy
>
> > From: "Mark Davis" <mark.davis@icu-project.org>
> > To: "LTRU Working Group" <ltru@ietf.org>
> > Sent: Tuesday, August 28, 2007 3:04 PM
> > Subject: [Ltru] extlang straw poll
> >
> > As a straw poll, where do people stand on extlang? That is, vis-a-vis
> the
> > question of using extlang in RFC4646bis to contain 639-3 macrolanguages,
> do
> > you:
> >
> >    1. Strongly favor having extlang
> >    2. Favor having extlang, but don't mind too much if it were not in
> >    3. Don't care much either way
> >    4. Favor not having extlang, but don't mind too much if it were in
> >    5. Strongly favor not having extlang
> >
> > Mark
> >
>
>
>
> --------------------------------------------------------------------------------
>
>
> > _______________________________________________
> > Ltru mailing list
> > Ltru@ietf.org
> > https://www1.ietf.org/mailman/listinfo/ltru
> >
>
>
>
> _______________________________________________
> Ltru mailing list
> Ltru@ietf.org
> https://www1.ietf.org/mailman/listinfo/ltru
>



-- 
Mark

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If you don&#39;t want to have a straw poll at this point that&#39;s fine. But then John needs to stop saying I&#39;m the only one standing in the way of the train ;-)<br><br>Mark<br><br><div><span class="gmail_quote">On 8/28/07, 
<b class="gmail_sendername">Randy Presuhn</b> &lt;<a href="mailto:randy_presuhn@mindspring.com">randy_presuhn@mindspring.com</a>&gt; wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hi -<br><br>As co-chair...<br><br>&gt;From a process perspective, while I like getting a sense of whether we have<br>any contributors in the &quot;can&#39;t live with&quot; or &quot;can&#39;t live without&quot; camps,<br>
I&#39;m afraid that &quot;having extlang&quot; needs to be teased apart a little more<br>carefully first.&nbsp;&nbsp;The devils are generally in the details, and at this<br>point it&#39;s still not clear to me whether objections are to the concept
<br>itself or to details of the current proposal.&nbsp;&nbsp;For example, some might<br>have lingering worries about having more than one way to tag a language, or<br>what the consequences for sgn- might be if extlang is removed.&nbsp;&nbsp;Consequently,
<br>we need to be sure we understand what the current proposal for extlang really<br>means, and work through any suggestions for modifying it, before we can address<br>the question of whether to eliminate it altogether.<br>
<br>Randy<br><br>&gt; From: &quot;Mark Davis&quot; &lt;<a href="mailto:mark.davis@icu-project.org">mark.davis@icu-project.org</a>&gt;<br>&gt; To: &quot;LTRU Working Group&quot; &lt;<a href="mailto:ltru@ietf.org">ltru@ietf.org
</a>&gt;<br>&gt; Sent: Tuesday, August 28, 2007 3:04 PM<br>&gt; Subject: [Ltru] extlang straw poll<br>&gt;<br>&gt; As a straw poll, where do people stand on extlang? That is, vis-a-vis the<br>&gt; question of using extlang in RFC4646bis to contain 639-3 macrolanguages, do
<br>&gt; you:<br>&gt;<br>&gt;&nbsp;&nbsp;&nbsp;&nbsp;1. Strongly favor having extlang<br>&gt;&nbsp;&nbsp;&nbsp;&nbsp;2. Favor having extlang, but don&#39;t mind too much if it were not in<br>&gt;&nbsp;&nbsp;&nbsp;&nbsp;3. Don&#39;t care much either way<br>&gt;&nbsp;&nbsp;&nbsp;&nbsp;4. Favor not having extlang, but don&#39;t mind too much if it were in
<br>&gt;&nbsp;&nbsp;&nbsp;&nbsp;5. Strongly favor not having extlang<br>&gt;<br>&gt; Mark<br>&gt;<br><br><br>--------------------------------------------------------------------------------<br><br><br>&gt; _______________________________________________
<br>&gt; Ltru mailing list<br>&gt; <a href="mailto:Ltru@ietf.org">Ltru@ietf.org</a><br>&gt; <a href="https://www1.ietf.org/mailman/listinfo/ltru">https://www1.ietf.org/mailman/listinfo/ltru</a><br>&gt;<br><br><br><br>_______________________________________________
<br>Ltru mailing list<br><a href="mailto:Ltru@ietf.org">Ltru@ietf.org</a><br><a href="https://www1.ietf.org/mailman/listinfo/ltru">https://www1.ietf.org/mailman/listinfo/ltru</a><br></blockquote></div><br><br clear="all">
<br>-- <br>Mark

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Hi -

> From: "Mark Davis" <mark.davis@icu-project.org>
> To: "Randy Presuhn" <randy_presuhn@mindspring.com>
> Cc: "LTRU Working Group" <ltru@ietf.org>
> Sent: Tuesday, August 28, 2007 3:51 PM
> Subject: Re: [Ltru] extlang straw poll
>
> If you don't want to have a straw poll at this point that's fine. 
...

As Co-chair:

Everyone has a homework item: look at the *current* extlang text.
If you have specific suggestions for changes to it, post them to
this mailing list *THIS WEEK*.  By this weekend (September 1) we
should have the "this is as good as it gets" text (at least in
email) for extlang.  About September 5 we should be able to do
the straw poll, if a rough consensus hasn't already emerged from
the discussion.

Randy



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> RFC 1766 already said that fallback doesn't always work, and sometimes
> produces something unintelligible to the requester.
>
> But I believe you are misusing the term "macrolanguage".  A macrolanguage
> is not to be equated with a "main" or standardized variety.  Some
> macrolanguages like Chinese and Arabic have such varieties, others like
> Quechua and Nahuatl do not.


I'm not misusing it -- nothing I said had anything to do with the
definition, it has to do with the functional implications. If a language yyy
has the macrolanguage xx, we are talking about two possible representations

a) extlang: xx-yyy
b) lang: yyy

The main reason I've heard from you for doing (a) instead of (b) is that (a)
it has better fallback behavior. For that to be true, xx has to be a good
fallback for users of yyy, in the majority of cases. And the value has to be
worth having the extra structure. So, a natural question to ask is: are you
sure that of ALL the languages on
http://www.sil.org/iso639-3/macrolanguages.asp, the ones that we are talking
about this mechanism for, that the fallback is indeed good.

I really want some reasonable attention paid to the implications of this
whole apparatus before we ship this, because once we do, it is irrevocable!

There are (at least) two cases to consider here.


   1. There is a predominent choice in the industry for the macro
   language. For example, the content for zh is typically always Mandarin; the
   content for ar is typically always standard Arabic. Look at the concrete
   implications. It means that whenever Joe looks for a web page in Hakka
   Chinese, he will typically fall back to Mandarin. Whenever Sarah looks for a
   page in Tunisian Arabic, it will fall back to standard Mandarin.

   If you are saying however, that zh is not necessarily Mandarin, that
   Arabic is not necessarily Standard Arabic, then we fall through to case 2.

   2. There is not a predominant choice in the industry, let's say for
   Hmong. In this case, the situation is different. I could choose any of the
   Hmong for the content for hmn. We then have an even dicer case for the value
   of extlang. I localize my hmn locale with contents appropriate for
   Northeastern Dian Hmong; is that a good default for someone speaking Eastern
   Xiangxi Hmong? for Luopohe Hmong? For all the other Hmongs?


For extlang to be a good apparatus, these always have to be good choices,
since we are baking the structure into the tag.

If Peter Constable came out and said the following, then I would admit to my
sins, give in gracefully, and go along with extlang.

   - "Yes, each of the Hmongs (encompassed by hmn) are mutually
   intelligible, and are better for each one than another fallback like
   Chinese"
      - and the same is true for all the other cases with no
      predominant variant.
   - "Yes, standard Arabic is intelligible for all the encompassed
   languages from Algerian Saharan Arabic to Shihhi Arabic, and are better for
   each one than another fallback like French"
      - and the same is true for all the other cases with a
      predominant variant.

Mark

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<br><div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">RFC 1766 already said that fallback doesn&#39;t always work, and sometimes<br>produces something unintelligible to the requester.
<br><br>But I believe you are misusing the term &quot;macrolanguage&quot;.&nbsp;&nbsp;A macrolanguage<br>is not to be equated with a &quot;main&quot; or standardized variety.&nbsp;&nbsp;Some<br>macrolanguages like Chinese and Arabic have such varieties, others like
<br>Quechua and Nahuatl do not.</blockquote><div><br>I&#39;m not misusing it -- nothing I said had anything to do with the definition, it has to do with the functional implications. If a language yyy has the macrolanguage xx, we are talking about two possible representations
<br><br><div style="margin-left: 40px;">a) extlang: xx-yyy<br>b) lang: yyy<br></div><br>The main reason I&#39;ve heard from you for doing (a) instead of (b) is that (a) it has better fallback behavior. For that to be true, xx has to be a good fallback for users of yyy, in the majority of cases. And the value has to be worth having the extra structure. So, a natural question to ask is: 
<span style="font-weight: bold;">are you sure that of <span style="font-style: italic;">ALL </span>the languages on <a href="http://www.sil.org/iso639-3/macrolanguages.asp">http://www.sil.org/iso639-3/macrolanguages.asp</a>
, the ones that we are talking about this mechanism for, that the fallback is indeed good.</span><br><br>I really want some reasonable attention paid to the implications of this whole apparatus before we ship this, because once we do, it is irrevocable!
<br><br>There are (at least) two cases to consider here.<br><br><ol><li>There is a predominent choice in the industry for the macro language. For example, the content for zh is typically always Mandarin; the content for ar is typically always standard Arabic. Look at the concrete implications. It means that whenever Joe looks for a web page in Hakka Chinese, he will typically fall back to Mandarin. Whenever Sarah looks for a page in Tunisian Arabic, it will fall back to standard Mandarin.
<br><br>If you are saying however, that zh is not necessarily Mandarin, that Arabic is not necessarily Standard Arabic, then we fall through to case 2.<br>&nbsp;<br></li><li>There is not a predominant choice in the industry, let&#39;s say for Hmong. In this case, the situation is different. I could choose any of the Hmong for the content for hmn. We then have an even dicer case for the value of extlang. I localize my hmn locale with contents appropriate for Northeastern Dian Hmong; is that a good default for someone speaking Eastern Xiangxi Hmong? for Luopohe Hmong? For all the other Hmongs?
</li></ol><br> For extlang to be a good apparatus, these always have to be good choices, since we are baking the structure into the tag.<br><br>If Peter Constable came out and said the following, then I would admit to my sins, give in gracefully, and go along with extlang.
<br><ul><li>&quot;Yes, each of the Hmongs (encompassed by hmn) are mutually intelligible, and are better for each one than another fallback like Chinese&quot;</li><ul><li>and the same is true for all the other cases with no predominant variant.
</li></ul><li>&quot;Yes, standard Arabic is intelligible for all the encompassed languages from Algerian Saharan Arabic to Shihhi Arabic, and are better for each one than another fallback like French&quot;</li><ul><li>and the same is true for all the other cases with a predominant variant.
</li></ul></ul></div>Mark<br></div>

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As a technical contributor:

In addition to my previous statement (leave things alone),
I have to agree with Marion that "on our planet" can go.

<tongue-in-cheek>We even had English spoken on the Moon,
and nobody would want to claim that our work can't be used
to tag utterances made on the Moon, or maybe in the distant
future on Mars.</tongue-in-cheek>

Regards,   Martin.

At 04:02 07/08/29, Marion Gunn wrote:
>First impressions are important, so - however long that particular =20
>expression has been in there - it is common knowledge that texts =20
>starting "on our planet" tend not to be taken seriously and that such =20
>expressions tend only detract/distract somewhat, from the substance =20
>of a document without adding anything of substance to it. By all =20
>means leave it in, if you disagree with the above.
>
>For ease of reference and for the sake of new readers, I'd also like =20
>to see "Definitions" fronted in the document, pace the ISO practice =20
>of fronting "Scope" and "Definitions", and to see "extlang" defined =20
>under "Definitions", as one of the many relevant terms (defined as a =20
>group of concepts) to be grasped, before describing how all those =20
>bits are meant to work together. If this means cutting and pasting in =20
>definitions straight out of other documents, that is fine and good =20
>for consistency checks across documents.
>
>I didn't address the question of handling extlangs simply because I =20
>am currently not at all sure how to do so.
>mg
>
>On 28 Aug 2007, at 13:53, scr=1B$ByP=1B(Bbh Addison Phillips:
>
>> Marion,
>>
>> This text has existed for a long time. In fact, it is taken =20
>> verbatim from RFC 3066 (RFC 1766 had a similar, but different, =20
>> sentence). This isn't a substantive edit and doesn't address the =20
>> real open issue in our draft, which is how to handle extlangs.
>>
>> Regards,
>>
>> Addison
>
>- -
>Marion Gunn * EGTeo (Estab.1991)
>27 P=1B$BaJ=1B(Brc an Fh=1B$BqJ=1B(Bthlinn, Baile an
>Bh=1B$B=85U=1B(Bhair, Co. =1B$B%A=1B(Btha Cliath, =1B$B%N=1B(Bire.
>* mgunn@egt.ie * eamonn@egt.ie *
>
>
>
>_______________________________________________
>Ltru mailing list
>Ltru@ietf.org
>https://www1.ietf.org/mailman/listinfo/ltru


#-#-#  Martin J. Du"rst, Assoc. Professor, Aoyama Gakuin University
#-#-#  http://www.sw.it.aoyama.ac.jp       mailto:duerst@it.aoyama.ac.jp =
   =20



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	"LTRU Working Group" <ltru@ietf.org>
From: Martin Duerst <duerst@it.aoyama.ac.jp>
Subject: Re: [Ltru] first paragraph of draft-ietf-ltru-rfc4646bis-08
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As a technical contributor, I agree with Randy.
The proposal makes the text more precise, but this is at the
start of the Introduction, where being more and more precise
ultimately leads to writing the spec again. So my opinion is:
leave it as is, details will follow, and everybody who has a
bit of understanding of how documents are written (in particular,
that the intro is general, and details will follow) will
know that.

Regards,    Martin.

At 01:52 07/08/29, Randy Presuhn wrote:
>Hi -
>
>As co-chair...
>
>We work by rough consensus.  The assessment whether a proposed
>edit needs to be made is up to the WG.  If a change is agreed
>(and I'm not saying this particular one has been) the editors
>need to implement it, whether they personally agree with it or not.
>So while as a technical contributor you're certainly expected to
>give your views, to avoid confusion please make it clear whether
>you're commenting as a technical contributor or as an editor.
>
>As a technical contributor:
>
>While I'm not fond of the existing
>text, I also haven't seen a convincing rationale that removing
>it would help (or hurt) anything.  As for the proposed change,
>I think tacking on the addtional text with a comma would result
>in an awkward run-on sentence.  If we were to make a change,
>I'd want the added text to be sentence in its own right.  My
>net position: leave it alone.  It's not sufficiently broken.
>
>Randy
>
>----- Original Message ----- 
>From: "Addison Phillips" <addison@yahoo-inc.com>
>To: "Marion Gunn" <mgunn@egt.ie>
>Cc: "LTRU Working Group" <ltru@ietf.org>
>Sent: Tuesday, August 28, 2007 6:53 AM
>Subject: Re: [Ltru] draft-ietf-ltru-rfc4646bis-08
>
>
>Marion,
>
>This text has existed for a long time. In fact, it is taken verbatim
>from RFC 3066 (RFC 1766 had a similar, but different, sentence). This
>isn't a substantive edit and doesn't address the real open issue in our
>draft, which is how to handle extlangs.
>
>Regards,
>
>Addison
>
>Marion Gunn wrote:
>> For starters, suggest losing the entire first sentence of paragraph 1
>> below, inserting the word "human" before "language" in its second
>> sentence and inserting the following comma-plus-clause text ", such
>> reasons as are set out below" before its closing full stop.
>> mg
>>
>>
>> On 24 Aug 2007, at 21:59, scr$B%F%e(Bobh Addison Phillips:
>>
>>
>>> Phillips & Davis        Expires February 25, 2008               [Page 3]
>>> Internet-Draft              langtags-registry                August 2007
>>>
>>>
>>> 1.  Introduction
>>>
>>>    Human beings on our planet have, past and present, used a number of
>>>    languages.  There are many reasons why one would want to identify the
>>>    language used when presenting or requesting information.
>>>
>>>
>>
>> -- 
>> Marion Gunn
>> mgunn@ucd.ie
>>
>> _______________________________________________
>> Ltru mailing list
>> Ltru@ietf.org
>> https://www1.ietf.org/mailman/listinfo/ltru
>
>-- 
>Addison Phillips
>Globalization Architect -- Yahoo! Inc.
>Chair -- W3C Internationalization Core WG
>
>Internationalization is an architecture.
>It is not a feature.
>
>
>_______________________________________________
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>
>
>
>
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#-#-#  Martin J. Du"rst, Assoc. Professor, Aoyama Gakuin University
#-#-#  http://www.sw.it.aoyama.ac.jp       mailto:duerst@it.aoyama.ac.jp     



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To: Marion Gunn <mgunn@egt.ie>, LTRU Working Group <ltru@ietf.org>
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Subject: Definitions (was: Re: [Ltru] draft-ietf-ltru-rfc4646bis-08)
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as a technical contributor:

If we got a lot of requests from new readers for a definition
section, I would be all for it. But as this creates more work
for our editors, I'll leave it to them.

I think our draft in general is easy to use: if you want to know
about a particular topic such as extlangs, go to the relevant
subsection. My experience with ISO-style definitions is that
they are often circular, and it's often only after reading
the rest of the document that you actually start to really
understand them. Putting them at the front is mostly just a
convention, they could be at the end, to. One benefit is that
it helps spec writers to try things through, but the IETF has
other ways of trying to make sure that the specs really work.

Regards,    Martin.


At 04:02 07/08/29, Marion Gunn wrote:

>For ease of reference and for the sake of new readers, I'd also like =20
>to see "Definitions" fronted in the document, pace the ISO practice =20
>of fronting "Scope" and "Definitions", and to see "extlang" defined =20
>under "Definitions", as one of the many relevant terms (defined as a =20
>group of concepts) to be grasped, before describing how all those =20
>bits are meant to work together. If this means cutting and pasting in =20
>definitions straight out of other documents, that is fine and good =20
>for consistency checks across documents.
>
>I didn't address the question of handling extlangs simply because I =20
>am currently not at all sure how to do so.
>mg
>
>On 28 Aug 2007, at 13:53, scr=1B$ByP=1B(Bbh Addison Phillips:
>
>> Marion,
>>
>> This text has existed for a long time. In fact, it is taken =20
>> verbatim from RFC 3066 (RFC 1766 had a similar, but different, =20
>> sentence). This isn't a substantive edit and doesn't address the =20
>> real open issue in our draft, which is how to handle extlangs.
>>
>> Regards,
>>
>> Addison
>
>- -
>Marion Gunn * EGTeo (Estab.1991)
>27 P=1B$BaJ=1B(Brc an Fh=1B$BqJ=1B(Bthlinn, Baile an
>Bh=1B$B=85U=1B(Bhair, Co. =1B$B%A=1B(Btha Cliath, =1B$B%N=1B(Bire.
>* mgunn@egt.ie * eamonn@egt.ie *
>
>
>
>_______________________________________________
>Ltru mailing list
>Ltru@ietf.org
>https://www1.ietf.org/mailman/listinfo/ltru


#-#-#  Martin J. Du"rst, Assoc. Professor, Aoyama Gakuin University
#-#-#  http://www.sw.it.aoyama.ac.jp       mailto:duerst@it.aoyama.ac.jp =
   =20



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At 07:35 07/08/29, John Cowan wrote:
>Mark Davis scripsit:

>> I've said before, and will say again: it was never a foregone conclusion. 
>
>I have never said so.  I do say that it is the status quo, and it's
>a change to the status quo that requires defending.

chair hat on:

Given the importance and controversy over the subject,
any assumtion either way of a 'default' would be bad process.
What we need to do is to try to find the technically best solution,
for a wide variety of applications.

Regards,   Martin.



#-#-#  Martin J. Du"rst, Assoc. Professor, Aoyama Gakuin University
#-#-#  http://www.sw.it.aoyama.ac.jp       mailto:duerst@it.aoyama.ac.jp     



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Subject: Re: [Ltru] extlang straw poll
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I fully agree with Randy on this and his follow-up mail.

For all WG members, please leave assessments of consensus
(starting with statements such as "only one person is in favor
of XYZ") as well as conducting straw polls to the co-chairs.

If you think that that an assessment of consensus is possible
and necessary, or a straw poll is in order, please ask the
co-chairs to do it. If you don't get any response after
a reminder, please feel free to ping the AD (you don't need
to make this an appeal!).

Regards,    Martin.

At 07:45 07/08/29, Randy Presuhn wrote:
>Hi -
>
>As co-chair...
>
>>From a process perspective, while I like getting a sense of whether we have
>any contributors in the "can't live with" or "can't live without" camps,
>I'm afraid that "having extlang" needs to be teased apart a little more
>carefully first.  The devils are generally in the details, and at this
>point it's still not clear to me whether objections are to the concept
>itself or to details of the current proposal.  For example, some might
>have lingering worries about having more than one way to tag a language, or
>what the consequences for sgn- might be if extlang is removed.  Consequently,
>we need to be sure we understand what the current proposal for extlang really
>means, and work through any suggestions for modifying it, before we can address
>the question of whether to eliminate it altogether.
>
>Randy
>
>> From: "Mark Davis" <mark.davis@icu-project.org>
>> To: "LTRU Working Group" <ltru@ietf.org>
>> Sent: Tuesday, August 28, 2007 3:04 PM
>> Subject: [Ltru] extlang straw poll
>>
>> As a straw poll, where do people stand on extlang? That is, vis-a-vis the
>> question of using extlang in RFC4646bis to contain 639-3 macrolanguages, do
>> you:
>> 
>>    1. Strongly favor having extlang
>>    2. Favor having extlang, but don't mind too much if it were not in
>>    3. Don't care much either way
>>    4. Favor not having extlang, but don't mind too much if it were in
>>    5. Strongly favor not having extlang
>> 
>> Mark
>> 
>
>
>--------------------------------------------------------------------------------
>
>
>> _______________________________________________
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>> 
>
>
>
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#-#-#  Martin J. Du"rst, Assoc. Professor, Aoyama Gakuin University
#-#-#  http://www.sw.it.aoyama.ac.jp       mailto:duerst@it.aoyama.ac.jp     



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At 07:04 07/08/29, Mark Davis wrote:
>As a straw poll, where do people stand on extlang? That is, vis-a-vis the question of using extlang in RFC4646bis to contain 639-3 macrolanguages, do you: 
>    * Strongly favor having extlang 
>    * Favor having extlang, but don't mind too much if it were not in 
>    * Don't care much either way 
>    * Favor not having extlang, but don't mind too much if it were in 
>    * Strongly favor not having extlang
To give my technical opinion, at the moment, my understanding
would be: it depends. For some languages/language families
(in particular ar, zh, and probably sng), extlangs seem
preferable. For others, probably not.

But we'll have an official straw poll anyway after having
hashed out the details.

Regards,    Martin.



#-#-#  Martin J. Du"rst, Assoc. Professor, Aoyama Gakuin University
#-#-#  http://www.sw.it.aoyama.ac.jp       mailto:duerst@it.aoyama.ac.jp     



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As a technical contributor, I quite agree with Randy.
See below for more details.

At 07:33 07/08/29, Randy Presuhn wrote:
>Hi -
>
>As a technical contributor...
>
>> From: "Mark Davis" <mark.davis@icu-project.org>
>> To: "John Cowan" <cowan@ccil.org>
>> Cc: "LTRU Working Group" <ltru@ietf.org>
>> Sent: Tuesday, August 28, 2007 2:59 PM
>> Subject: [Ltru] extlang
>...
>> You are not revealing some important hidden assumptions in your statements.
>> 
>>    1. The macrolanguage is always a better fallback for every encompassed
>>    language than other alternatives. Out of the many encompassed languages, you
>>    implying that a speaker of every encompassed language will be able to
>>    understand the macrolanguage, or at least better than the alteratives.
>
>I don't see how the use of extlang would require this as an assumption.
>Making such an assumption seems a bit like assuming that all languages whose
>tags begin in "a" are somehow related.
>
>>    2. People don't lose anything by having the fallback. I dispute this
>>    as well. As previously noted:
>>    1. Truncation fallback from zh-cmn-Hant-SG to "zh" loses the Hant and
>>       the SG; falling back from ar-arb-SA to 'ar' loses the "SA".
>
>It is the nature of truncation fallback to lose information.  No matter
>what order the subtags are trimmed off, someone will be able to argue
>that for some particular case, a different order might have been better.
>This isn't an argument against extlang; it's an argument against unrealistically
>high expectations for truncation fallback.
>
>>       2. It introduces ambiguous language names. Right now, in the
>>       overwhelming majority of practice, standard Arabic is "ar"; after the
>>       change, standard Arabic is "ar-arb".
>
>This would not be desirable.  However, I wonder whether the semantic associated
>by most taggers and users of tags with "ar" is "standard Arabic" or merely 
>"Arabic".

Well, probably both ways. Most written Arabic is standard Arabic,
I guess, so even if you assume "ar" just means "whatever Arabic it
means", most stuff tagged "ar" will be Standard Arabic.

The question is whether we can make that assumption stronger,
or whether we can live with such an uncertainity.

I think to some extent, we have always done this.
As an example, "ja" means Japanese, but it also, by suppress-script,
means Japanese written in Kanji-Kana-mixture, and it also, by
"tag wisely", means Japanese as used in Japan.

In general, "tag wisely" seems to include "tag special cases
very precisely, general cases can be tagged more shortly".

So in practice using ar rather than ar-arb for Standard Arabic
seems to be extremely feasible. The question may be how we
can say that in our draft without contradicting ourselves,
and/or how we can help practice moving that way even if we
don't say so in the spec.

>>    3. People can't get along without this.
>>    1. Anyone who has to deal with language issues on all but a trivial
>>       level must already have a mechanism to deal with sh, sr, hr; with no, nb,
>>       nn. Those are macrolanguages and encompassed languages. They
>> exist right now
>>       WITHOUT an extlang mechanism, and people deal with them. The proposed
>>       mechanism won't handle these, and anyone who can handle these
>> doesn't need
>>       extlang.
>
>I think this argument is flawed in that it neglects the cost of supporting
>such constellations of languages.  There are already some messes that we're
>stuck with, and that have to be handled in an ad hoc manner.  This doesn't
>justify requiring ad hoc handling for every other such constellation of
>languages.

Thinking about what problems Mark actually has, it may be that
what he is saying is: I know I have to deal with some things as
special cases, but I'd like to limit these to single-tag cases
and not to have to combine fallback code and special-case code.

Mark, if this is what you are after, please confirm, and maybe
give some details. Others, if that doesn't look like it would
work, please give some counterexamples.

Regards,    Martin.

>>       2. With the Macrolanguage field, there is sufficient information
>>       for *anyone* who wants to to implement extlang-like fallback
>> (including for
>>       sh or no), *without* encumbering the IDs with superfluous information.
>
>This would be a compelling argument, if fallback were the sole reason for 
>extlang.
>However, fallback is not the sole motivation for extlangs; they are also
>of use to taggers with incomplete knowledge of the languages used in the
>materials they are tagging.  The library staff in my home town would be
>doing well if they correctly recognized material as "zh" or "ar".  It would
>be quite unrealistic to expect them to be any more precise.
>
>Of course we'd all like everyone who has to tag material to have perfect
>knowledge of the languages involved so that tags with sufficient precision
>and accuracy would be used.  But we also know that in reality people work
>with incomplete knowledge.  Consequently, I think we should allow people to
>who by necessity tag with low precision to nonetheless do so accurately.
>
>> > >    2. it is sufficiently better to warrant making the language tags more
>> > >    complicated by the addition of this mechanism.
>> >
>> > Language tags become more complicated *if* it is desired to make them
>> > so.  Those who find "zh" sufficient may continue to use it while still
>> > interoperating with "zh-cmn", "zh-yue", and so on.  Existing deployed
>> > matchers will continue to work, as will existing deployed software
>> > that understands specific tags; they will not need to become more
>> > complicated to understand the out-of-band relationship between "zh",
>> > "cmn", "yue", etc.
>> 
>> 
>> This is untrue. As soon as we implemented extlang in prototype, we ran into
>> the problems listed above. It *didn't* work out of the box.
>
>I'm missing something.  Precisely what scenario was it that was expected to
>work that did not?
>
>Randy
>
>
>
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#-#-#  Martin J. Du"rst, Assoc. Professor, Aoyama Gakuin University
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Subject: Re: [Ltru] Re: extlang
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At 07:35 07/08/29, John Cowan wrote:
>Mark Davis scripsit:

>>       2. With the Macrolanguage field, there is sufficient information
>>       for *anyone* who wants to to implement extlang-like fallback
>>       (including for sh or no), *without* encumbering the IDs with
>>       superfluous information.
>
>I support the Macrolanguage: field for the uses which you mention.
>Furthermore, I support extlangs *only* in the context of using newly
>introduced 639-3 identifiers that are encompassed by a macrolanguage
>registered in 639-2.  Thus, I do *not* support changes to language
>tags based on shifting macrolanguage information as SIL learns more,
>just the 350+ specific code elements of 639-3, and no more.

Hello John,

I'm sure you have done so somewhere already, but for everybody
to see, could you (pointer is okay) provide a list of the
macrolanguages that would be handled by extlangs?
(and maybe also those that wouldn't).
Also, is your proposal above the same thing as what's in the
current draft, or would the draft need tweaking?
(My reading of Randy's collection of snippets seems to indicate
that our draft would need some work.)
If that's the case, can you provide some proposed text?

Regards,    Martin.


#-#-#  Martin J. Du"rst, Assoc. Professor, Aoyama Gakuin University
#-#-#  http://www.sw.it.aoyama.ac.jp       mailto:duerst@it.aoyama.ac.jp     



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From: "Doug Ewell" <dewell@roadrunner.com>
To: "LTRU Working Group" <ltru@ietf.org>
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Subject: Re: Introduction (was: Re: [Ltru] draft-ietf-ltru-rfc4646bis-08)
Date: Tue, 28 Aug 2007 22:27:50 -0700
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I am in fairly weak agreement with Marion over the introductory text. 
The wording about human beings on our planet, past and present, has 
certainly been around since RFC 3066, but RFCs have become more formal 
in their wording (and in other ways) since then.  RFC 4646 is over four 
times as long as 3066 and might call for a different approach.  The 
current wording has also been parodied more than once in other 
documents.

I'm not so sure about putting a Definitions section near the front. 
Like Martin, I've also had trouble with ISO documents that start me off 
with pages of definitions of terms I've never seen before, and no 
context in which to place them.  Usually I look for such reference 
material near the end of a document, not the beginning.  What is 
important is that all such material be in an easy-to-find place.

However, at this stage it is much more important to me that we resolve 
the real technical debate over extlangs, and get the drafts to WG Last 
Call, than to engage in fine-tuning and wordsmithing at this level.  The 
current wording doesn't cause any confusion or misinterpretation.  If we 
weren't already half a year behind schedule, I would probably care more 
about this.

--
Doug Ewell · Fullerton, California, USA · RFC 4645 · UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
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From ltru-bounces@ietf.org Wed Aug 29 02:00:58 2007
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From: "Doug Ewell" <dewell@roadrunner.com>
To: "LTRU Working Group" <ltru@ietf.org>
References: <E1IQC6R-0003Yq-FO@megatron.ietf.org>
Subject: Re: [Ltru] extlang straw poll
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Randy Presuhn <randy underscore presuhn at mindspring dot com> wrote:

> Everyone has a homework item: look at the *current* extlang text.
> If you have specific suggestions for changes to it, post them to
> this mailing list *THIS WEEK*.  By this weekend (September 1) we
> should have the "this is as good as it gets" text (at least in
> email) for extlang.  About September 5 we should be able to do
> the straw poll, if a rough consensus hasn't already emerged from
> the discussion.

I'll have a much better chance of addressing this properly over the 
weekend than during the week, especially given that it's a three-day 
weekend in the U.S.

My gut feeling, though, is that the specific suggestion I will make is 
to revert the extlang/macrolanguage text to what it was in 
draft-ietf-ltru-4646bis-06.

--
Doug Ewell · Fullerton, California, USA · RFC 4645 · UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
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From: "Randy Presuhn" <randy_presuhn@mindspring.com>
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Subject: Re: [Ltru] Re: extlang
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Hi -

Forgive the extended context.  My comments are inline.
As a technical contributor...

> From: "Mark Davis" <mark.davis@icu-project.org>
> To: "John Cowan" <cowan@ccil.org>
> Cc: "LTRU Working Group" <ltru@ietf.org>
> Sent: Tuesday, August 28, 2007 6:12 PM
> Subject: [Ltru] Re: extlang
>
> > RFC 1766 already said that fallback doesn't always work, and sometimes
> > produces something unintelligible to the requester.
> >
> > But I believe you are misusing the term "macrolanguage".  A macrolanguage
> > is not to be equated with a "main" or standardized variety.  Some
> > macrolanguages like Chinese and Arabic have such varieties, others like
> > Quechua and Nahuatl do not.
> 
> 
> I'm not misusing it -- nothing I said had anything to do with the
> definition, it has to do with the functional implications. If a language yyy
> has the macrolanguage xx, we are talking about two possible representations
> 
> a) extlang: xx-yyy
> b) lang: yyy
> 
> The main reason I've heard from you for doing (a) instead of (b) is that (a)
> it has better fallback behavior. For that to be true, xx has to be a good
> fallback for users of yyy, in the majority of cases.

As I see it, the qualification "in the majority of cases" is far too strong.
As I see it, if there are *any* significant cases where (a) would work better,
there is reason to consider that approach worth investigating.

> And the value has to be
> worth having the extra structure.

What is the cost of the "extra structure"?

> So, a natural question to ask is: are you
> sure that of ALL the languages on
> http://www.sil.org/iso639-3/macrolanguages.asp, the ones that we are talking
> about this mechanism for, that the fallback is indeed good.

I think this is a mis-statement of the argument.  I think the question is whether
there are any cases for which the fallback would be useful, or for which there
would be other reasons (which I'd like to see spelled out somewhere) to prefer
the (a) format over the (b) format.
 
> I really want some reasonable attention paid to the implications of this
> whole apparatus before we ship this, because once we do, it is irrevocable!

Full agreement.
 
> There are (at least) two cases to consider here.
> 
> 
>    1. There is a predominent choice in the industry for the macro
>    language. For example, the content for zh is typically always Mandarin; the
>    content for ar is typically always standard Arabic. Look at the concrete
>    implications. It means that whenever Joe looks for a web page in Hakka
>    Chinese, he will typically fall back to Mandarin. Whenever Sarah looks for a
>    page in Tunisian Arabic, it will fall back to standard Mandarin.

I assume the last Mandarin was Arabic.

> 
>    If you are saying however, that zh is not necessarily Mandarin, that
>    Arabic is not necessarily Standard Arabic, then we fall through to case 2.

This is the case of what I would call "accurately but imprecisely" tagged material,
 
>    2. There is not a predominant choice in the industry, let's say for
>    Hmong. In this case, the situation is different. I could choose any of the
>    Hmong for the content for hmn. We then have an even dicer case for the value
>    of extlang. I localize my hmn locale with contents appropriate for
>    Northeastern Dian Hmong; is that a good default for someone speaking Eastern
>    Xiangxi Hmong? for Luopohe Hmong? For all the other Hmongs?

The use of extlang per se has no effect on how this scenario plays out.
What you're assuming here is that the extlang element would always correspond
to some identifiable single language variety, and that there might be content
which would be fully identified by it.  In my opinion, this should happen
solely for those cases where we already have a specific string that is 
already used for a particular language.  The only other case where I could
see it making sense to tag content solely with the extlang is in cases
where a more accurate identification of the language hasn't happened.

> For extlang to be a good apparatus, these always have to be good choices,
> since we are baking the structure into the tag.
> 
> If Peter Constable came out and said the following, then I would admit to my
> sins, give in gracefully, and go along with extlang.
> 
>    - "Yes, each of the Hmongs (encompassed by hmn) are mutually
>    intelligible, and are better for each one than another fallback like
>    Chinese"
>       - and the same is true for all the other cases with no
>       predominant variant.
>    - "Yes, standard Arabic is intelligible for all the encompassed
>    languages from Algerian Saharan Arabic to Shihhi Arabic, and are better for
>    each one than another fallback like French"
>       - and the same is true for all the other cases with a
>       predominant variant.

It's pretty easy to come up with scenarios in which just about any
fallback scheme will produce results other than the desired ones.
That's the problem with heuristics.  They don't predict things like
the fact that 'de' is easier for me than 'en-scottish' even though
my preferred language might be 'en-US'.

Fallback has probably been over-sold.  But I think the real question is
whether using extlang would provide value at all, and what (if any)
cost there would be to supporting it.  THAT's the equation that needs
to be solved.

Randy



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Subject: Re: [Ltru] extlang straw poll
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Hi -

> From: "Doug Ewell" <dewell@roadrunner.com>
> To: "LTRU Working Group" <ltru@ietf.org>
> Sent: Tuesday, August 28, 2007 11:00 PM
> Subject: Re: [Ltru] extlang straw poll
...
> I'll have a much better chance of addressing this properly over the 
> weekend than during the week, especially given that it's a three-day 
> weekend in the U.S.
...

OK, if it will help let's move the period for comment out to September 5.
But please, folks, let's try to get some closure on this!

Randy



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From: Marion Gunn <mgunn@egt.ie>
Subject: Re: Introduction (was: Re: [Ltru] draft-ietf-ltru-rfc4646bis-08)
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On 29 Aug 2007, at 05:27, scr=EDobh Doug Ewell:

> I am in fairly weak agreement with Marion over the introductory text.

:-)

> The wording about human beings on our planet, past and present, has =20=

> certainly been around since RFC 3066, but RFCs have become more =20
> formal in their wording (and in other ways) since then.

Exactly. There is nothing so out of date as last year's fashion, and =20
nothing so likely to irritate professional readers as informal =20
language where we feel it is out of place.

> RFC 4646 is over four times as long as 3066 and might call for a =20
> different approach.  The current wording has also been parodied =20
> more than once in other documents.
>
> I'm not so sure about putting a Definitions section near the front. =20=

> Like Martin, I've also had trouble with ISO documents that start me =20=

> off with pages of definitions of terms I've never seen before, and =20
> no context in which to place them.

As a terminologist, that's _exactly_ were I expect to find them (like =20=

the key we expect to be fronted in most dictionaries).

> Usually I look for such reference material near the end of a =20
> document, not the beginning.  What is important is that all such =20
> material be in an easy-to-find place.

I find myself in strong agreement with Doug on that (first or last =20
placement is less important than _inclusion_ of keys/definitions).

>
> However, at this stage it is much more important to me that we =20
> resolve the real technical debate over extlangs, and get the drafts =20=

> to WG Last Call, than to engage in fine-tuning and wordsmithing at =20
> this level.  The current wording doesn't cause any confusion or =20
> misinterpretation.  If we weren't already half a year behind =20
> schedule, I would probably care more about this.

I haven't been minding any schedule to do with this. Part of the =20
problem in maintaining continuous transatlantic dialogue is that US =20
citizens are only coming to life as workers in the rest of the "West" =20=

are winding down for the day (we French, Irish, German workers are =20
finding our mailboxes suddenly filling up with US mail as we are =20
clearing our desks for the day - unless one stays on to give it a =20
quick once-over, it is hard to come cold to the debate next morning).

Then again, I suppose we could - as so many US ex-pats do over here - =20=

sleep until noon, breakfast at lunchtime and only schedule business =20
mtgs for after 4 pm and real hard work from then until 3am, but we'd =20
have to be unemployed or self-employed to make that system work, and =20
our neighbours might shun us vampires!:-)

Long way of saying sorry to raise such points as affect the structure =20=

so late in the work schedule, but I'd rather raise such points while =20
the doc. is still in draft form than not at all. To me, "fine-tuning =20
and wordsmithing" are non-structural matters, changing the structure =20
something definitely to do at drafting stage.

In any case, I would not in any way wish my comments to delay =20
progress to final draft, so feel free not to mind what I have =20
suggested at this stage. Now, signing off for mid-day break (12:10 =20
here).

mg

- -
Marion Gunn * EGTeo (Estab.1991)
27 P=E1irc an Fh=E9ithlinn, Baile an
Bh=F3thair, Co. =C1tha Cliath, =C9ire.
* mgunn@egt.ie * eamonn@egt.ie *



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From ltru-bounces@ietf.org Wed Aug 29 07:22:04 2007
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From: Marion Gunn <mgunn@egt.ie>
Subject: Re: Definitions (was: Re: [Ltru] draft-ietf-ltru-rfc4646bis-08)
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While agreeing with the thrust of what I think you are saying below, =20
JFC, I see Debbie as rather having introduced greater clarity with =20
her NWIP by forcing discussion to clear some confusion on important =20
points (so placing drafters and potential users alike in her debt).
Best,
mg
On 29 Aug 2007, at 06:59, scr=EDobh JFC Morfin:

> At 04:38 29/08/2007, Martin Duerst wrote:
>
>> One benefit is that it helps spec writers to try things through, =20
>> but the IETF has other ways of trying to make sure that the specs =20
>> really work.
>>
>
> ...
> I am impressed by your interest in thesauri and ontologies. =20
> Nevertheless would there be, at the beginning or at the end I do =20
> not care, a definition of what you consider a "language" is, that =20
> could help many people understanding what BCP 47 speaks about. Look =20=

> at the confusion that Debbie has introduced with her NWIP, not =20
> understanding the difference of what is a language for ISO 639 and =20
> 3166...

- -
Marion Gunn * EGTeo (Estab.1991)
27 P=E1irc an Fh=E9ithlinn, Baile an
Bh=F3thair, Co. =C1tha Cliath, =C9ire.
* mgunn@egt.ie * eamonn@egt.ie *



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From: Marion Gunn <mgunn@egt.ie>
Subject: Re: [Ltru] extlang straw poll
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I strongly agree with what Randy _and_ Mark say below, respectively, =20
only to stress that it would be wiser to have the question decided in =20=

draft, rather than at any "fine-tuning' stage.
mg

On 28 Aug 2007, at 22:45, scr=EDobh Randy Presuhn:


> Hi -
>
> As co-chair...
>
>
>
>> =46rom a process perspective, while I like getting a sense of =20
>> whether we have
>>
>>
> any contributors in the "can't live with" or "can't live without" =20
> camps,
> I'm afraid that "having extlang" needs to be teased apart a little =20
> more
> carefully first.  The devils are generally in the details, and at this
> point it's still not clear to me whether objections are to the concept
> itself or to details of the current proposal.  For example, some might
> have lingering worries about having more than one way to tag a =20
> language, or
> what the consequences for sgn- might be if extlang is removed.  =20
> Consequently,
> we need to be sure we understand what the current proposal for =20
> extlang really
> means, and work through any suggestions for modifying it, before we =20=

> can address
> the question of whether to eliminate it altogether.
>

On 28 Aug 2007, at 22:51, Mark Davis wrote:

> If you don't want to have a straw poll at this point that's fine. =20
> But then John needs to stop saying I'm the only one standing in the =20=

> way of the train ;-)
>
> Mark
>




- -
Marion Gunn * EGTeo (Estab.1991)
27 P=E1irc an Fh=E9ithlinn, Baile an
Bh=F3thair, Co. =C1tha Cliath, =C9ire.
* mgunn@egt.ie * eamonn@egt.ie *



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From ltru-bounces@ietf.org Wed Aug 29 09:14:07 2007
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Martin Duerst scripsit:

> I'm sure you have done so somewhere already, but for everybody
> to see, could you (pointer is okay) provide a list of the
> macrolanguages that would be handled by extlangs?

Note that it's the "microlanguages" (not an official term), the languages
encompassed by macrolanguages, that are handled by extlang subtags.

http://www.sil.org/iso639-3/macrolanguages.asp is the core list of
macrolanguage mappings.  For our purposes, the macrolanguages Akan
(Fat, Twi), Norwegian (Bokmal, Nynorsk), and Serbo-Croatian (Serbian,
Croatian, Bosnian) are out of the case, because the "microlanguages"
already have primary language subtags.  (Mark has mentioned the Norwegian
and Serbo-Croatian cases as ones that one needs to handle specially even
under an extlang regime.)

In addition to these, "sgn" is treated as a macrolanguage
encompassing all sign languages.  A list of these can be found at
http://www.ethnologue.com/show_family.asp?subid=90008 (the Deaf ones)
and http://www.ethnologue.com/show_family.asp?subid=90503 (the others).

> (and maybe also those that wouldn't).

That would be all the existing languages of 639-2, plus all
the languages of 639-3 that do *not* appear on the right
side of the above-referenced table.

> Also, is your proposal above the same thing as what's in the
> current draft, or would the draft need tweaking?

I understand it to be the same.

-- 
There are three kinds of people in the world:   John Cowan
those who can count,                            cowan@ccil.org
and those who can't.


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Hi -

As co-chair....

My experience in the IETF is that the time to do "word-smithing" is
*BEFORE* a working group last call.  The later we are in the process,
the greater the reluctance to change *anything* will become, due
to concerns about inadvertantly breaking something.  Though not yet
at the WG last call stage, we are quite late, and the reluctance to make
changes is starting to show.

This is quite different from how things may work in some other
organizations that people on this list may be accustomed to,
particularly ones with official "editing meetings".  But when in Rome...
Remember: after completion of a WG last call and production of an update
succefully addressing last call comments, only changes resulting
from the IESG and the IETF last call comments are considered, and
generally only "show stoppers" are required to be addressed.

Consequently, if you would like to see an editorial change, I ask
that you please propose specific  text for discussion sooner rather
than later.

Randy



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From ltru-bounces@ietf.org Thu Aug 30 11:22:50 2007
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Subject: RE: Introduction (was: Re: [Ltru] draft-ietf-ltru-rfc4646bis-08)
Date: Thu, 30 Aug 2007 16:17:47 +0100
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Doug wrote:

> I'm not so sure about putting a Definitions section near the front.
> Like Martin, I've also had trouble with ISO documents that
> start me off with pages of definitions of terms I've never
> seen before, and no context in which to place them.  Usually
> I look for such reference material near the end of a
> document, not the beginning.  What is important is that all
> such material be in an easy-to-find place.

In general, I have found that I cannot understand an ISO document unless I
refer to the Terms and Definitions section.  I am in agreement with Doug,
whether it be placed front or back matters not but I think to devise a Terms
and Definitions section would be very useful to newbies.  It would also
cement the terminology for ease of use in other documents wishing to
reference the RFC.

Best

Debbie



> -----Original Message-----
> From: Doug Ewell [mailto:dewell@roadrunner.com]
> Sent: 29 August 2007 06:28
> To: LTRU Working Group
> Subject: Re: Introduction (was: Re: [Ltru]
> draft-ietf-ltru-rfc4646bis-08)
>
> I am in fairly weak agreement with Marion over the introductory text.
> The wording about human beings on our planet, past and
> present, has certainly been around since RFC 3066, but RFCs
> have become more formal in their wording (and in other ways)
> since then.  RFC 4646 is over four times as long as 3066 and
> might call for a different approach.  The current wording has
> also been parodied more than once in other documents.
>
> I'm not so sure about putting a Definitions section near the front.
> Like Martin, I've also had trouble with ISO documents that
> start me off with pages of definitions of terms I've never
> seen before, and no context in which to place them.  Usually
> I look for such reference material near the end of a
> document, not the beginning.  What is important is that all
> such material be in an easy-to-find place.
>
> However, at this stage it is much more important to me that
> we resolve the real technical debate over extlangs, and get
> the drafts to WG Last Call, than to engage in fine-tuning and
> wordsmithing at this level.  The current wording doesn't
> cause any confusion or misinterpretation.  If we weren't
> already half a year behind schedule, I would probably care
> more about this.
>
> --
> Doug Ewell . Fullerton, California, USA . RFC 4645 . UTN #14
> http://users.adelphia.net/~dewell/
> http://www1.ietf.org/html.charters/ltru-charter.html
> http://www.alvestrand.no/mailman/listinfo/ietf-languages
>
>
>
> _______________________________________________
> Ltru mailing list
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>
>
>






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From ltru-bounces@ietf.org Thu Aug 30 12:04:17 2007
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From: Marion Gunn <mgunn@egt.ie>
Subject: Re: Introduction (was: Re: [Ltru] draft-ietf-ltru-rfc4646bis-08)
Date: Thu, 30 Aug 2007 17:04:12 +0000
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I am in total agreement with DG on this matter (as set out below in =20
her msg of today - as cited below - which msg of hers echoes the =20
substance of one of mine of yesterday, I believe).
mg

On 30 Aug 2007, at 15:17, scr=EDobh Debbie Garside:

> ... I think to devise a Terms
> and Definitions section would be very useful to newbies.  It would =20
> also
> cement the terminology for ease of use in other documents wishing to
> reference the RFC.

- -
Marion Gunn * EGTeo (Estab.1991)
27 P=E1irc an Fh=E9ithlinn, Baile an
Bh=F3thair, Co. =C1tha Cliath, =C9ire.
* mgunn@egt.ie * eamonn@egt.ie *



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From ltru-bounces@ietf.org Thu Aug 30 12:39:10 2007
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From: Marion Gunn <mgunn@egt.ie>
Subject: Re: Introduction (was: Re: [Ltru] draft-ietf-ltru-rfc4646bis-08)
Date: Thu, 30 Aug 2007 17:38:58 +0000
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On 30 Aug 2007, at 16:26, scr=EDobh Mark Davis:

> I find the typical Terms and Definitions sections at the start of =20
> many ISO documents actually counter-productive. The items are =20
> presented before you have any background for what the definitions =20
> really mean, and are in no cohesive order.

Alphabetical order is cohesive enough for most professional users. =20
Added to that, even for newbies, it is predictable, logical, =20
consistent with ISO documents in general, with which one would expect =20=

most users of this list to be familiar.

>
> As you read the document, each technical term should be defined in =20
> the paragraph where it is first used. If that is not the case, then =20=

> please make specific suggestions for additions to the text.

Is that the case with regard to this particular document, Mark? Or - =20
rather than asking that question -  let us assume that it is, then =20
have its editors simply cut and past each "first use mention" into a =20
"Terms and Definitions" section, so that it can be used by those used =20=

to using dictionaries and ISO documents with the same ease as it can =20
be ignored by those who are not.

>
> I'm not, in theory, against having a glossary of collected terms at =20=

> the end of the document for reference.

Good. It would be a worry if you were against including in the =20
document a glossary of collected terms (I say this because I =20
generally find myself in agreement with much of the content of many =20
of your msgs, and would not like this to be different).

> But I don't think it is worth the time and effort compared to =20
> getting the "first usage" instances correct. And it might better go =20=

> in a "Language Tag Tutorial".

If you are proposing to compose a "Language Tag Tutorial", that would =20=

probably be useful, as well  (but much more work for you to compile =20
than the usual "Terms and Definitions" component users of ISO =20
standards find so handy for ref.).
mg

>
>
> Mark
>
> On 8/30/07, Marion Gunn <mgunn@egt.ie> wrote:
> I am in total agreement with DG on this matter (as set out below in
> her msg of today - as cited below - which msg of hers echoes the
> substance of one of mine of yesterday, I believe).
> mg
>
> On 30 Aug 2007, at 15:17, scr=EDobh Debbie Garside:
>
> > ... I think to devise a Terms
> > and Definitions section would be very useful to newbies.  It would
> > also
> > cement the terminology for ease of use in other documents wishing to
> > reference the RFC.

- -
Marion Gunn * EGTeo (Estab.1991)
27 P=E1irc an Fh=E9ithlinn, Baile an
Bh=F3thair, Co. =C1tha Cliath, =C9ire.
* mgunn@egt.ie * eamonn@egt.ie *


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<HTML><BODY style=3D"word-wrap: break-word; -khtml-nbsp-mode: space; =
-khtml-line-break: after-white-space; "><BR><DIV><DIV>On 30 Aug 2007, at =
16:26, scr=EDobh Mark Davis:</DIV><BR =
class=3D"Apple-interchange-newline"><BLOCKQUOTE type=3D"cite">I find the =
typical Terms and Definitions sections at the start of many ISO =
documents actually counter-productive. The items are presented before =
you have any background for what the definitions really mean, and are in =
no cohesive order. <BR></BLOCKQUOTE><DIV><BR =
class=3D"khtml-block-placeholder"></DIV>Alphabetical order is cohesive =
enough for most professional users. Added to that, even for newbies, it =
is predictable, logical, consistent with ISO documents in general, with =
which one would expect most users of this list to be =
familiar.</DIV><DIV><BR><BLOCKQUOTE type=3D"cite"><BR>As you read the =
document, each technical term should be defined in the paragraph where =
it is first used. If that is not the case, then please make specific =
suggestions for additions to the text.<BR></BLOCKQUOTE><DIV><BR =
class=3D"khtml-block-placeholder"></DIV>Is that the case with regard to =
this particular document, Mark? Or - rather than asking that question -=A0=
 let us assume that it is, then have its editors simply cut and past =
each "first use mention" into a "Terms and Definitions" section, so that =
it can be used by those used to using dictionaries and ISO documents =
with the same ease as it can be ignored by those who are =
not.</DIV><DIV><BR><BLOCKQUOTE type=3D"cite"><BR>I'm not, in theory, =
against having a glossary of collected terms at the end of the document =
for reference. <BR></BLOCKQUOTE><DIV><BR =
class=3D"khtml-block-placeholder"></DIV>Good. It would be a worry if you =
were against including in the document a glossary of collected terms (I =
say this because I generally find myself in agreement with much of the =
content of many of your msgs, and would not like this to be =
different).</DIV><DIV><BR><BLOCKQUOTE type=3D"cite">But I don't think it =
is worth the time and effort compared to getting the "first usage" =
instances correct. And it might better go in a "Language Tag =
Tutorial".<BR></BLOCKQUOTE><DIV><BR =
class=3D"khtml-block-placeholder"></DIV>If=A0you are proposing to =
compose a "Language Tag Tutorial", that would probably be useful, as =
well=A0 (but much more work for you to compile than the usual "Terms and =
Definitions" component users of ISO standards find so handy for =
ref.).</DIV><DIV>mg</DIV><DIV><BR><BLOCKQUOTE type=3D"cite"> =
<BR><BR>Mark<BR><BR><DIV><SPAN class=3D"gmail_quote">On 8/30/07, <B =
class=3D"gmail_sendername">Marion Gunn</B> &lt;<A =
href=3D"mailto:mgunn@egt.ie">mgunn@egt.ie</A>&gt; =
wrote:</SPAN><BLOCKQUOTE class=3D"gmail_quote" style=3D"border-left: 1px =
solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: =
1ex;"> I am in total agreement with DG on this matter (as set out below =
in<BR>her msg of today - as cited below - which msg of hers echoes =
the<BR>substance of one of mine of yesterday, I =
believe).<BR>mg<BR><BR>On 30 Aug 2007, at 15:17, scr=EDobh Debbie =
Garside: <BR><BR>&gt; ... I think to devise a Terms<BR>&gt; and =
Definitions section would be very useful to newbies.=A0=A0It =
would<BR>&gt; also<BR>&gt; cement the terminology for ease of use in =
other documents wishing to<BR>&gt; reference the =
RFC.=A0</BLOCKQUOTE></DIV></BLOCKQUOTE></DIV><BR><DIV> <DIV>- =
-=A0</DIV><DIV>Marion Gunn * EGTeo (Estab.1991)</DIV><DIV>27 P=E1irc an =
Fh=E9ithlinn, Baile an </DIV><DIV>Bh=F3thair, Co. =C1tha Cliath, =
=C9ire.</DIV><DIV>* <A href=3D"mailto:mgunn@egt.ie">mgunn@egt.ie</A> * =
<A href=3D"mailto:eamonn@egt.ie">eamonn@egt.ie</A> *</DIV>  =
</DIV><BR></BODY></HTML>=

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Subject: Re: Introduction (was: Re: [Ltru] draft-ietf-ltru-rfc4646bis-08)
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From: Marion Gunn <mgunn@egt.ie>
Subject: Re: [Ltru] Re: extlang
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On 29 Aug 2007, at 13:13, scr=EDobh John Cowan:

> Note that it's the "microlanguages" (not an official term), the =20
> languages
> encompassed by macrolanguages, that are handled by extlang subtags...
>

I strongly object to the use of the above unofficial term, which John =20=

Cowan is now using this list to promote (as evidenced in a recent msg =20=

from him, as cited below) and I believe that, if the administrators =20
of this list _fail_ to deprecate his use of such an objectionable =20
term, that this may be an appropriate time for representatives of the =20=

National Bodies of governments of the countries whose indigenous =20
languages he has so denigrated (by his deliberate use of said =20
unofficial term) to withdraw any provisional support they may have =20
given until now to the use of the term "macrolanguages" (because that =20=

provisional support for treating that term as "official" would seem =20
to be providing the opportunity to use an objectionable word to =20
denigrate languages without even naming them).
mg




- -
Marion Gunn * EGTeo (Estab.1991)
27 P=E1irc an Fh=E9ithlinn, Baile an
Bh=F3thair, Co. =C1tha Cliath, =C9ire.
* mgunn@egt.ie * eamonn@egt.ie *



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Peter Constable wrote:
>  These are the cases that relate to the
> way language-range works.
> 

Not exactly. Language-ranges are the expression of the preference. While 
HTTP 1.1 and others didn't put a lot of structure around language 
negotiation, we spent some time doing so in RFC 4647.

HTTP 1.1 and other, similar, items defined what we now call "basic 
filtering". That's what Peter means by the above. There is also 
"lookup", which is widely implemented (not well that I do not say "more 
widely").

In fact, we have different mechanisms for working with language tagged 
materials and these mechanisms each have their own uses and practical 
usage scenarios.

As for extlangs... I'm not sure we can solve this by arguing either 
case. Both the pro- and anti-extlang parties have valid points and in 
some cases the extlang tags *are* more useful and in some cases they 
*are* more harmful.

For a long time I supported extlangs because they were the direction we 
had laid down, in particular for Chinese languages. However, some things 
bother me about this approach:

1. If the languages in question really are distinct languages, why does 
subordinating the language make sense? Yes, you couldn't tag this or 
that language yesterday via the less distinct macrolanguage tag. Is that 
appropriate?

Thus, if I were to support extlang, it would be based solely on John 
Cowan's argument that we need extlang to prevent a "retagging crisis" 
for languages formerly enclosed by a macrolanguage.

2. Randy suggested (a long while ago now) that cherry-picking from the 
macrolanguage list would be a bad idea. Yet tag stability provisions 
prevent us from taking the list wholesale. And I have some concern that 
the macrolanguage "collections" (if you'll pardon this inaccurate term) 
have yet to be thoroughly tested. They may not be stable or suitable in 
the short-to-medium term. This is not a critique of ISO 639-3's work 
here. It is merely a note of caution.

If I were to support doing extlangs, it would consider each 
macrolanguage separately, as a one-time-event, and, again, solely as a 
compatibility item.

Note that we also face our own exception--I assume future sign languages 
would be treated as extlangs for compatibility reasons. Note that sign 
languages are NOT macrolanguages in the first place--they are already 
exceptional. I would favor eliminating this use of extlang too.

3. Mark's arguments about "better matching choices" really don't fit 
with matching as described in RFC 4647. Applications really do need to 
do more than the trivial matching in BCP 47 in many cases, but these 
depend on application specific needs. "Pure" BCP 47 matching has its 
place and cannot do many of the things that Mark suggests (as with 
Breton -> French fallback).

Mark's arguments about losing subsidiary subtags when matching extlangs 
*do* concern me. I had to modify my implementation of filtering to make 
it work in an extlang world. The modifications were not difficult and 
were reasonably successful. I *could* support a very limited application 
of extlang...

... but I feel that we're doing a disservice to the various languages 
involved by making them extlangs. Shouldn't Cantonese, Wu, or Hakka be 
treated fully as languages? Yes, it saves some retagging in the short 
term, but it is cleaner and clearer to tag languages directly. Users can 
still use the macrolanguage tag instead (I doubt we'll see much 'cmn-*' 
when 'zh-*' is available). It eliminates a complexity in tagging and 
language negotiation/selection who's purpose is served by compatibility 
alone. And content will need to be retagged in either case to take 
advantage of the distinction. Content that is not retagged won't be 
distinct.

Addison

-- 
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.


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From ltru-bounces@ietf.org Thu Aug 30 13:37:23 2007
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I have several comments on this thread, submitted as a technical 
contributor unless otherwise noted:

1. I objected to making extensive editorial changes to the introduction 
and elsewhere because this work, RFC 4646bis, follows hard on the heels 
of a quite extensive revision of the document. I have been editing this 
document for 4 1/2 years now. I don't love every word of it. Like many 
documents written by a committee, it is not truly beautiful. However, 
having recently achieved consensus on this document (since it was 
published as an RFC)---a consensus that must have included on some level 
the commenters, since their names appear in the acknowledgments--I am 
loathe to go back and make an extensive series of revisions. This effort 
was chartered as a fairly minor one focused on extlangs. As an editor, I 
do occasionally restructure or rewrite text as a result of the changes 
we are currently working on. However, I don't feel we should proceed, 
paragraph by paragraph, to alter the document at length.

2. Terms and definitions sections are all very well. This document even 
has such a section, although it is not called that. Section 2.2 contains 
a terminology section, where we define the critical terms for 
understanding the document.

3. I note that the original comment was about the term 'extlang'. 
However, 'extlang' is NOT a term (although we use it as one on this 
list). It has two uses in the document:

   i. It is the name of a production in the ABNF grammar.
   ii. It is a subtag 'type' string. It is references very carefully 
this way in all cases.

The proper term is "extended language subtag" and it is defined in 
Section 2.2.2. Note that this is the same part of the document where the 
other terminology is defined.

4. I suspect that a Terms and Definitions appendix will serve to make 
the document longer, but will little avail readers. I invite someone to 
suggest the terminology list with definitions. However, me tendency is 
to think that it will be somewhat redundant with the body of the document.

Regards,

Addison

-- 
Addison Phillips
Globalization Architect -- Yahoo! Inc.
Chair -- W3C Internationalization Core WG

Internationalization is an architecture.
It is not a feature.


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From: Marion Gunn <mgunn@egt.ie>
Subject: Re: [Ltru] Re: extlang
Date: Thu, 30 Aug 2007 18:46:59 +0000
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	Addison Phillips <addison@yahoo-inc.com>
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On 30 Aug 2007, at 17:13, scr=EDobh Addison Phillips:

> ...
> As for extlangs... I'm not sure we can solve this by arguing either =20=

> case. Both the pro- and anti-extlang parties have valid points and =20
> in some cases the extlang tags *are* more useful and in some cases =20
> they *are* more harmful...

The most harmful aspect of extlangs, Addison, is John Cowan's =20
reckless use of an objectionable unofficial term (in his msg below), =20
which I am still waiting for a list administrator to challenge/=20
deprecate via the list, because that unofficial term denigrates the =20
indigenous languages of certain countries.
mg


On 29 Aug 2007, at 13:13, scr=EDobh John Cowan:


> Note that it's the "microlanguages" (not an official term), the =20
> languages
> encompassed by macrolanguages, that are handled by extlang subtags...
>


- -
Marion Gunn * EGTeo (Estab.1991)
27 P=E1irc an Fh=E9ithlinn, Baile an
Bh=F3thair, Co. =C1tha Cliath, =C9ire.
* mgunn@egt.ie * eamonn@egt.ie *



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hi -

As a co-chair...

> From: "Debbie Garside" <debbie@ictmarketing.co.uk>
> To: <dewell@roadrunner.com>; "'LTRU Working Group'" <ltru@ietf.org>
> Sent: Thursday, August 30, 2007 8:17 AM
> Subject: RE: Introduction (was: Re: [Ltru] draft-ietf-ltru-rfc4646bis-08)
...
> In general, I have found that I cannot understand an ISO document unless I
> refer to the Terms and Definitions section.

This is a direct consequence of their custom of putting most definitions in
this section.  Another approach, more typical of IETF documents, is for terms
and conventions to be defined on first use.  Some documents will collect
this information into a section on conventions or definitions, but there is
no requirement to do it in any particular manner.

> I am in agreement with Doug,
> whether it be placed front or back matters not but I think to devise a Terms
> and Definitions section would be very useful to newbies.  It would also
> cement the terminology for ease of use in other documents wishing to
> reference the RFC.

For this proposal to get any traction, you should propose specific text,
or at least provide specific examples of terms which have caused problems
for readers of the document.

Randy



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From: "Randy Presuhn" <randy_presuhn@mindspring.com>
To: "LTRU Working Group" <ltru@ietf.org>
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Hi -

As co-chair...

> From: "Marion Gunn" <mgunn@egt.ie>
> To: "LTRU Working Group" <ltru@ietf.org>
> Sent: Thursday, August 30, 2007 11:05 AM
> Subject: Re: [Ltru] Re: extlang
>
> On 29 Aug 2007, at 13:13, scríobh John Cowan:
>
> > Note that it's the "microlanguages" (not an official term), the
> > languages
> > encompassed by macrolanguages, that are handled by extlang subtags...
> >
>
> I strongly object to the use of the above unofficial term, which John

On what grounds?  If the string '"microlanguages" (not an official term)' is
objectionable to you as a shorthand for "language tag which are constructed
by joining an extlang representing an macrolanguage and an additional subtag
to identify the specific language" (or something like that), please suggest a concise
alternative suitable for use in our discussion.

> Cowan is now using this list to promote (as evidenced in a recent msg
> from him, as cited below) and I believe that, if the administrators
> of this list _fail_ to deprecate his use of such an objectionable
> term, that this may be an appropriate time for representatives of the
> National Bodies of governments of the countries whose indigenous
> languages he has so denigrated (by his deliberate use of said
> unofficial term) to withdraw any provisional support they may have
> given until now to the use of the term "macrolanguages" (because that
> provisional support for treating that term as "official" would seem
> to be providing the opportunity to use an objectionable word to
> denigrate languages without even naming them).
...

Participation in the IETF is by individuals, not National Body representatives.
Calls such as this are meaningless.  We use "unofficial terms" all the time.
Honestly, I completely fail to see how "microlanguage" (formed by obvious
analogy from "macrolanguage") to describe language tags formed in a
particular way could be though to "denigrate" a language.

Randy




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For the record, I suspect John used this term -- in quotes indicating that =

this wasn't formal language -- because I had just used this term in an=20
offline e-mail to him trying to clarify the straw poll question. I=20
certainly meant nothing by it -- I was making sure that we were talking=20
about the languages encapsulated by the macrolanguage, not the=20
macrolanguage itself as was implied by the text. If this term has offended =

you, I'm sorry for my part in it. I'm quite sure John did not use this in=20
the spirit you are suggesting.=20

If m*crolanguage is an offensive term, perhaps macrolanguage is as well?

Regards,

Karen Broome





Marion Gunn <mgunn@egt.ie>=20
08/30/2007 11:46 AM

To
LTRU Working Group <ltru@ietf.org>, Addison Phillips=20
<addison@yahoo-inc.com>
cc

Subject
Re: [Ltru] Re: extlang






On 30 Aug 2007, at 17:13, scr=EDobh Addison Phillips:

> ...
> As for extlangs... I'm not sure we can solve this by arguing either=20
> case. Both the pro- and anti-extlang parties have valid points and=20
> in some cases the extlang tags *are* more useful and in some cases=20
> they *are* more harmful...

The most harmful aspect of extlangs, Addison, is John Cowan's=20
reckless use of an objectionable unofficial term (in his msg below),=20
which I am still waiting for a list administrator to challenge/=20
deprecate via the list, because that unofficial term denigrates the=20
indigenous languages of certain countries.
mg


On 29 Aug 2007, at 13:13, scr=EDobh John Cowan:


> Note that it's the "microlanguages" (not an official term), the=20
> languages
> encompassed by macrolanguages, that are handled by extlang subtags...
>


- -
Marion Gunn * EGTeo (Estab.1991)
27 P=E1irc an Fh=E9ithlinn, Baile an
Bh=F3thair, Co. =C1tha Cliath, =C9ire.
* mgunn@egt.ie * eamonn@egt.ie *



=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F
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<br><font size=3D2 face=3D"sans-serif">For the record, I suspect John used
this term -- in quotes indicating that this wasn't formal language -- becau=
se
I had just used this term in an offline e-mail to him trying to clarify
the straw poll question. I certainly meant nothing by it -- I was making
sure that we were talking about the languages encapsulated by the macrolang=
uage,
not the macrolanguage itself as was implied by the text. If this term has
offended you, I'm sorry for my part in it. I'm quite sure John did not
use this in the spirit you are suggesting. </font>
<br>
<br><font size=3D2 face=3D"sans-serif">If m*crolanguage is an offensive ter=
m,
perhaps macrolanguage is as well?</font>
<br>
<br><font size=3D2 face=3D"sans-serif">Regards,</font>
<br>
<br><font size=3D2 face=3D"sans-serif">Karen Broome</font>
<br>
<br>
<br>
<br>
<br>
<table width=3D100%>
<tr valign=3Dtop>
<td width=3D40%><font size=3D1 face=3D"sans-serif"><b>Marion Gunn &lt;mgunn=
@egt.ie&gt;</b>
</font>
<p><font size=3D1 face=3D"sans-serif">08/30/2007 11:46 AM</font>
<td width=3D59%>
<table width=3D100%>
<tr valign=3Dtop>
<td>
<div align=3Dright><font size=3D1 face=3D"sans-serif">To</font></div>
<td><font size=3D1 face=3D"sans-serif">LTRU Working Group &lt;ltru@ietf.org=
&gt;,
Addison Phillips &lt;addison@yahoo-inc.com&gt;</font>
<tr valign=3Dtop>
<td>
<div align=3Dright><font size=3D1 face=3D"sans-serif">cc</font></div>
<td>
<tr valign=3Dtop>
<td>
<div align=3Dright><font size=3D1 face=3D"sans-serif">Subject</font></div>
<td><font size=3D1 face=3D"sans-serif">Re: [Ltru] Re: extlang</font></table>
<br>
<table>
<tr valign=3Dtop>
<td>
<td></table>
<br></table>
<br>
<br>
<br><tt><font size=3D2>On 30 Aug 2007, at 17:13, scr=EDobh Addison Phillips=
:<br>
<br>
&gt; ...<br>
&gt; As for extlangs... I'm not sure we can solve this by arguing either
&nbsp;<br>
&gt; case. Both the pro- and anti-extlang parties have valid points and
&nbsp;<br>
&gt; in some cases the extlang tags *are* more useful and in some cases
&nbsp;<br>
&gt; they *are* more harmful...<br>
<br>
The most harmful aspect of extlangs, Addison, is John Cowan's &nbsp;<br>
reckless use of an objectionable unofficial term (in his msg below), &nbsp;=
<br>
which I am still waiting for a list administrator to challenge/ <br>
deprecate via the list, because that unofficial term denigrates the &nbsp;<=
br>
indigenous languages of certain countries.<br>
mg<br>
<br>
<br>
On 29 Aug 2007, at 13:13, scr=EDobh John Cowan:<br>
<br>
<br>
&gt; Note that it's the &quot;microlanguages&quot; (not an official term),
the &nbsp;<br>
&gt; languages<br>
&gt; encompassed by macrolanguages, that are handled by extlang subtags...<=
br>
&gt;<br>
<br>
<br>
- -<br>
Marion Gunn * EGTeo (Estab.1991)<br>
27 P=E1irc an Fh=E9ithlinn, Baile an<br>
Bh=F3thair, Co. =C1tha Cliath, =C9ire.<br>
* mgunn@egt.ie * eamonn@egt.ie *<br>
<br>
<br>
<br>
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F<br>
Ltru mailing list<br>
Ltru@ietf.org<br>
https://www1.ietf.org/mailman/listinfo/ltru<br>
<br>
</font></tt>
<br>
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To: Marion Gunn <mgunn@egt.ie>
Subject: Re: [Ltru] Re: extlang
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Marion Gunn scripsit:

> I strongly object to the use of the above unofficial term, which John
> Cowan is now using this list to promote

Promote?  Rubbish.

> if the administrators of this list _fail_ to deprecate his use of such
> an objectionable term

As Randy told you, this is the IETF, where we speak only for ourselves.
In particular, I don't at any time speak for any group.

> that this may be an appropriate time for representatives of the National
> Bodies of governments of the countries whose indigenous languages
> he has so denigrated (by his deliberate use of said unofficial term)
> to withdraw any provisional support they may have given until now to
> the use of the term "macrolanguages" (because that provisional support
> for treating that term as "official" would seem to be providing the
> opportunity to use an objectionable word to denigrate languages without
> even naming them).

However, you ought to know by now that threats against me don't get
you very far.  I'm sure the 639-3/RA and the 639/RA-JAC can take care of
themselves; the notion that one word in one email can put ISO funding
at risk is preposterous.

I'm sorry to take up the list members' time with this, but baseless charges
have to be nailed to the wall.  Dixi.


That said, the term is indeed a poor one, and I do acknowledge the
unconscious influence of Karen's email to me.  "Encompassed languages"
is what I meant and should have said.

-- 
Business before pleasure, if not too bloomering long before.
        --Nicholas van Rijn
                John Cowan <cowan@ccil.org>
                    http://www.ccil.org/~cowan


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From: Peter Constable <petercon@microsoft.com>
To: Marion Gunn <mgunn@egt.ie>, LTRU Working Group <ltru@ietf.org>
Date: Thu, 30 Aug 2007 14:25:43 -0700
Subject: RE: [Ltru] Re: extlang
Thread-Topic: [Ltru] Re: extlang
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I think it's fairly obvious that John was using the term as a convenience f=
or our discussions with purely technical meaning that does not in any way i=
mply a value judgment on any language variety.

For that matter, "macrolanguage" as defined in ISO 639-3 also does not conn=
ote any value judgment on language varieties so designated, or even on thei=
r sociolinguistic status. It has a technical meaning given in ISO 639-3 tha=
t, I think, is clear in this regard.



Peter


> -----Original Message-----
> From: Marion Gunn [mailto:mgunn@egt.ie]
> Sent: Thursday, August 30, 2007 11:05 AM
> To: LTRU Working Group
> Subject: Re: [Ltru] Re: extlang
>
> On 29 Aug 2007, at 13:13, scr=EDobh John Cowan:
>
> > Note that it's the "microlanguages" (not an official term), the
> > languages
> > encompassed by macrolanguages, that are handled by extlang subtags...
> >
>
> I strongly object to the use of the above unofficial term, which John
> Cowan is now using this list to promote (as evidenced in a recent msg
> from him, as cited below) and I believe that, if the administrators
> of this list _fail_ to deprecate his use of such an objectionable
> term, that this may be an appropriate time for representatives of the
> National Bodies of governments of the countries whose indigenous
> languages he has so denigrated (by his deliberate use of said
> unofficial term) to withdraw any provisional support they may have
> given until now to the use of the term "macrolanguages" (because that
> provisional support for treating that term as "official" would seem
> to be providing the opportunity to use an objectionable word to
> denigrate languages without even naming them).
> mg
>
>
>
>
> - -
> Marion Gunn * EGTeo (Estab.1991)
> 27 P=E1irc an Fh=E9ithlinn, Baile an
> Bh=F3thair, Co. =C1tha Cliath, =C9ire.
> * mgunn@egt.ie * eamonn@egt.ie *
>
>
>
> _______________________________________________
> Ltru mailing list
> Ltru@ietf.org
> https://www1.ietf.org/mailman/listinfo/ltru


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To: "Peter Constable" <petercon@microsoft.com>
Subject: Re: [Ltru] Re: extlang
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From: "Debbie Garside" <debbie@ictmarketing.co.uk>
To: <mark.davis@icu-project.org>,
	"'Marion Gunn'" <mgunn@egt.ie>
References: <E1IQEij-0004g7-6m@megatron.ietf.org><000f01c7e9fd$57f96bb0$6401a8c0@DGBP7M81><072f01c7eb18$ed434620$0b00a8c0@CPQ86763045110><D979A70B-FDFD-4EAB-97F1-8DF96F670004@egt.ie><30b660a20708300926v71aeb83eu33c8ccaa0d986a01@mail.gmail.com><D3B4F8D9-527B-4DB4-B846-572704FC8404@egt.ie>
	<30b660a20708300946t2295b031vba4b3d2af8f1165@mail.gmail.com>
Subject: RE: Introduction (was: Re: [Ltru] draft-ietf-ltru-rfc4646bis-08)
Date: Fri, 31 Aug 2007 01:38:42 +0100
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Mark wrote:
=20
>I disagree. I've hit many instances where the definition of an ISO term
makes no sense until you've read enough of the way through the document =
to
understand it. Alphabetical is fine for reference *after* you've read =
the
document, but it is a nice to have, and not a requirement.=20

I agree, somewhat.  However, I find it useful to read the Terms first =
then
read the document whilst trying to remember the terms that are defined -
looking them up as I come across them to remind myself as to their =
meaning;
which by that time makes sense.  It means a bit of going backwards and
forwards sometimes but essentially it works in that there can be no
misunderstanding as to the authors intended meaning.  As Terminology is
really coming to the fore within industry this is now becoming quite
important.=20
=20
Reading and understanding ISO standards is an art in itself :-)
=20
Best
=20
Debbie
PS When I first started out in Standardization it took me ages to fathom =
out
the meaning of Data Categories - I hadn't read the Ts and Ds ;-)  I =
thought
it was something really obscure.
=20
  =20
=20
=20


  _____ =20

From: Mark Davis [mailto:mark.davis@icu-project.org]=20
Sent: 30 August 2007 17:47
To: Marion Gunn
Cc: LTRU Working Group
Subject: Re: Introduction (was: Re: [Ltru] =
draft-ietf-ltru-rfc4646bis-08)



On 8/30/07, Marion Gunn <mgunn@egt.ie> wrote:=20


On 30 Aug 2007, at 16:26, scr=EDobh Mark Davis:



I find the typical Terms and Definitions sections at the start of many =
ISO
documents actually counter-productive. The items are presented before =
you
have any background for what the definitions really mean, and are in no
cohesive order.=20



Alphabetical order is cohesive enough for most professional users. Added =
to
that, even for newbies, it is predictable, logical, consistent with ISO
documents in general, with which one would expect most users of this =
list to
be familiar.=20


I disagree. I've hit many instances where the definition of an ISO term
makes no sense until you've read enough of the way through the document =
to
understand it. Alphabetical is fine for reference *after* you've read =
the
document, but it is a nice to have, and not a requirement.=20

We are not writing an ISO document, and there is no requirement to =
follow
its format.





As you read the document, each technical term should be defined in the
paragraph where it is first used. If that is not the case, then please =
make
specific suggestions for additions to the text.=20



Is that the case with regard to this particular document, Mark? Or - =
rather
than asking that question -  let us assume that it is, then have its =
editors
simply cut and past each "first use mention" into a "Terms and =
Definitions"
section, so that it can be used by those used to using dictionaries and =
ISO
documents with the same ease as it can be ignored by those who are not.=20


No. I'm saying that if you personally, or anyone else on this list, =
finds a
case where a term is not clear on first usage, then you should point it =
out
and suggest additional text at that point.=20





I'm not, in theory, against having a glossary of collected terms at the =
end
of the document for reference.=20



Good. It would be a worry if you were against including in the document =
a
glossary of collected terms (I say this because I generally find myself =
in
agreement with much of the content of many of your msgs, and would not =
like
this to be different).=20



But I don't think it is worth the time and effort compared to getting =
the
"first usage" instances correct. And it might better go in a "Language =
Tag
Tutorial".=20



If you are proposing to compose a "Language Tag Tutorial", that would
probably be useful, as well  (but much more work for you to compile than =
the
usual "Terms and Definitions" component users of ISO standards find so =
handy
for ref.).=20


No. I'm saying that if someone wants to write a tutorial, and collect =
terms,
that's fine. Go ahead.




mg





Mark


On 8/30/07, Marion Gunn < mgunn@egt.ie <mailto:mgunn@egt.ie> > wrote:=20

I am in total agreement with DG on this matter (as set out below in=20
her msg of today - as cited below - which msg of hers echoes the
substance of one of mine of yesterday, I believe).
mg

On 30 Aug 2007, at 15:17, scr=EDobh Debbie Garside:=20

> ... I think to devise a Terms=20
> and Definitions section would be very useful to newbies.  It would
> also
> cement the terminology for ease of use in other documents wishing to
> reference the RFC.=20


- -=20
Marion Gunn * EGTeo (Estab.1991)
27 P=E1irc an Fh=E9ithlinn, Baile an=20
Bh=F3thair, Co. =C1tha Cliath, =C9ire.
* mgunn@egt.ie * eamonn@egt.ie *


_______________________________________________=20
Ltru mailing list
Ltru@ietf.org
https://www1.ietf.org/mailman/listinfo/ltru






--=20
Mark=20


------=_NextPart_000_07E7_01C7EB6F.AA0833F0
Content-Type: text/html;
	charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<META content=3D"MSHTML 6.00.2900.2180" name=3DGENERATOR></HEAD>
<BODY>
<DIV dir=3Dltr align=3Dleft><FONT face=3DArial color=3D#0000ff =
size=3D2><SPAN=20
class=3D619343000-31082007>Mark wrote:</SPAN></FONT></DIV>
<DIV dir=3Dltr align=3Dleft><FONT face=3DArial color=3D#0000ff =
size=3D2><SPAN=20
class=3D619343000-31082007></SPAN></FONT>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><FONT face=3DArial color=3D#0000ff =
size=3D2><SPAN=20
class=3D619343000-31082007>&gt;<FONT face=3D"Times New Roman" =
color=3D#000000 size=3D3>I=20
disagree. I've hit many instances where the definition of an ISO term =
makes no=20
sense until you've read enough of the way through the document to =
understand it.=20
Alphabetical is fine for reference *after* you've read the document, but =
it is a=20
nice to have, and not a requirement. </FONT><BR></SPAN></FONT></DIV>
<DIV dir=3Dltr align=3Dleft><FONT face=3DArial color=3D#0000ff =
size=3D2><SPAN=20
class=3D619343000-31082007>I agree, somewhat.&nbsp; However, I find it =
useful to=20
read the Terms first&nbsp;then read the document whilst&nbsp;trying to =
remember=20
the terms that are defined - looking them up as I come across them to =
remind=20
myself as to their meaning; which by that time makes sense.&nbsp; It =
means a bit=20
of going backwards and forwards sometimes but essentially it works in =
that there=20
can be no misunderstanding as to&nbsp;the authors intended =
meaning.&nbsp; As=20
Terminology is really coming to the fore within industry this is now =
becoming=20
quite important.&nbsp;</SPAN></FONT></DIV>
<DIV dir=3Dltr align=3Dleft><FONT face=3DArial color=3D#0000ff =
size=3D2><SPAN=20
class=3D619343000-31082007></SPAN></FONT>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><FONT face=3DArial color=3D#0000ff =
size=3D2><SPAN=20
class=3D619343000-31082007>Reading and understanding&nbsp;ISO standards =
is an art=20
in itself :-)</SPAN></FONT></DIV>
<DIV dir=3Dltr align=3Dleft><FONT face=3DArial color=3D#0000ff =
size=3D2><SPAN=20
class=3D619343000-31082007></SPAN></FONT>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><FONT face=3DArial color=3D#0000ff =
size=3D2><SPAN=20
class=3D619343000-31082007>Best</SPAN></FONT></DIV>
<DIV dir=3Dltr align=3Dleft><FONT face=3DArial color=3D#0000ff =
size=3D2><SPAN=20
class=3D619343000-31082007></SPAN></FONT>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><FONT face=3DArial color=3D#0000ff =
size=3D2><SPAN=20
class=3D619343000-31082007>Debbie</SPAN></FONT></DIV>
<DIV dir=3Dltr align=3Dleft><FONT face=3DArial color=3D#0000ff =
size=3D2><SPAN=20
class=3D619343000-31082007>PS When I first started out in =
Standardization it took=20
me ages to fathom out the meaning of Data Categories - I hadn't read the =
Ts and=20
Ds ;-)&nbsp; I thought it was something really =
obscure.</SPAN></FONT></DIV>
<DIV dir=3Dltr align=3Dleft><FONT face=3DArial color=3D#0000ff =
size=3D2><SPAN=20
class=3D619343000-31082007></SPAN></FONT>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><FONT face=3DArial color=3D#0000ff =
size=3D2><SPAN=20
class=3D619343000-31082007>&nbsp;</SPAN></FONT><FONT face=3DArial =
color=3D#0000ff=20
size=3D2><SPAN =
class=3D619343000-31082007>&nbsp;&nbsp;</SPAN></FONT></DIV>
<DIV dir=3Dltr align=3Dleft><FONT face=3DArial color=3D#0000ff =
size=3D2><SPAN=20
class=3D619343000-31082007></SPAN></FONT>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><FONT face=3DArial color=3D#0000ff =
size=3D2><SPAN=20
class=3D619343000-31082007>&nbsp;</DIV></SPAN></FONT><BR>
<BLOCKQUOTE=20
style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px =
solid; MARGIN-RIGHT: 0px">
  <DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr align=3Dleft>
  <HR tabIndex=3D-1>
  <FONT face=3DTahoma size=3D2><B>From:</B> Mark Davis=20
  [mailto:mark.davis@icu-project.org] <BR><B>Sent:</B> 30 August 2007=20
  17:47<BR><B>To:</B> Marion Gunn<BR><B>Cc:</B> LTRU Working=20
  Group<BR><B>Subject:</B> Re: Introduction (was: Re: [Ltru]=20
  draft-ietf-ltru-rfc4646bis-08)<BR></FONT><BR></DIV>
  <DIV></DIV><BR>
  <DIV><SPAN class=3Dgmail_quote>On 8/30/07, <B =
class=3Dgmail_sendername>Marion=20
  Gunn</B> &lt;<A href=3D"mailto:mgunn@egt.ie">mgunn@egt.ie</A>&gt; =
wrote:</SPAN>
  <BLOCKQUOTE class=3Dgmail_quote=20
  style=3D"PADDING-LEFT: 1ex; MARGIN: 0pt 0pt 0pt 0.8ex; BORDER-LEFT: =
rgb(204,204,204) 1px solid">
    <DIV><BR>
    <DIV>
    <DIV>On 30 Aug 2007, at 16:26, scr=EDobh Mark Davis:</DIV><SPAN =
class=3Dq><BR>
    <BLOCKQUOTE type=3D"cite">I find the typical Terms and Definitions =
sections=20
      at the start of many ISO documents actually counter-productive. =
The items=20
      are presented before you have any background for what the =
definitions=20
      really mean, and are in no cohesive order. <BR></BLOCKQUOTE>
    <DIV><BR></DIV></SPAN>Alphabetical order is cohesive enough for most =

    professional users. Added to that, even for newbies, it is =
predictable,=20
    logical, consistent with ISO documents in general, with which one =
would=20
    expect most users of this list to be familiar. =
</DIV></DIV></BLOCKQUOTE>
  <DIV><BR>I disagree. I've hit many instances where the definition of =
an ISO=20
  term makes no sense until you've read enough of the way through the =
document=20
  to understand it. Alphabetical is fine for reference *after* you've =
read the=20
  document, but it is a nice to have, and not a requirement. <BR><BR>We =
are not=20
  writing an ISO document, and there is no requirement to follow its=20
  format.<BR></DIV><BR>
  <BLOCKQUOTE class=3Dgmail_quote=20
  style=3D"PADDING-LEFT: 1ex; MARGIN: 0pt 0pt 0pt 0.8ex; BORDER-LEFT: =
rgb(204,204,204) 1px solid">
    <DIV>
    <DIV><SPAN class=3Dq>
    <BLOCKQUOTE type=3D"cite">As you read the document, each technical =
term=20
      should be defined in the paragraph where it is first used. If that =
is not=20
      the case, then please make specific suggestions for additions to =
the text.=20
      <BR></BLOCKQUOTE>
    <DIV><BR></DIV></SPAN>Is that the case with regard to this =
particular=20
    document, Mark? Or - rather than asking that question -&nbsp; let us =
assume=20
    that it is, then have its editors simply cut and past each "first =
use=20
    mention" into a "Terms and Definitions" section, so that it can be =
used by=20
    those used to using dictionaries and ISO documents with the same =
ease as it=20
    can be ignored by those who are not. </DIV></DIV></BLOCKQUOTE>
  <DIV><BR>No. I'm saying that if you personally, or anyone else on this =
list,=20
  finds a case where a term is not clear on first usage, then you should =
point=20
  it out and suggest additional text at that point. <BR></DIV><BR>
  <BLOCKQUOTE class=3Dgmail_quote=20
  style=3D"PADDING-LEFT: 1ex; MARGIN: 0pt 0pt 0pt 0.8ex; BORDER-LEFT: =
rgb(204,204,204) 1px solid">
    <DIV>
    <DIV><SPAN class=3Dq>
    <BLOCKQUOTE type=3D"cite">I'm not, in theory, against having a =
glossary of=20
      collected terms at the end of the document for reference. =
<BR></BLOCKQUOTE>
    <DIV><BR></DIV></SPAN>Good. It would be a worry if you were against=20
    including in the document a glossary of collected terms (I say this =
because=20
    I generally find myself in agreement with much of the content of =
many of=20
    your msgs, and would not like this to be different). </DIV>
    <DIV><SPAN class=3Dq><BR>
    <BLOCKQUOTE type=3D"cite">But I don't think it is worth the time and =
effort=20
      compared to getting the "first usage" instances correct. And it =
might=20
      better go in a "Language Tag Tutorial". <BR></BLOCKQUOTE>
    <DIV><BR></DIV></SPAN>If&nbsp;you are proposing to compose a =
"Language Tag=20
    Tutorial", that would probably be useful, as well&nbsp; (but much =
more work=20
    for you to compile than the usual "Terms and Definitions" component =
users of=20
    ISO standards find so handy for ref.). </DIV></DIV></BLOCKQUOTE>
  <DIV><BR>No. I'm saying that if someone wants to write a tutorial, and =
collect=20
  terms, that's fine. Go ahead.<BR></DIV><BR>
  <BLOCKQUOTE class=3Dgmail_quote=20
  style=3D"PADDING-LEFT: 1ex; MARGIN: 0pt 0pt 0pt 0.8ex; BORDER-LEFT: =
rgb(204,204,204) 1px solid">
    <DIV><SPAN class=3Dsg>
    <DIV>mg</DIV></SPAN><SPAN class=3Dq>
    <DIV><BR>
    <BLOCKQUOTE type=3D"cite"><BR><BR>Mark<BR><BR>
      <DIV><SPAN class=3Dgmail_quote>On 8/30/07, <B =
class=3Dgmail_sendername>Marion=20
      Gunn</B> &lt;<A onclick=3D"return =
top.js.OpenExtLink(window,event,this)"=20
      href=3D"mailto:mgunn@egt.ie" target=3D_blank> mgunn@egt.ie</A>&gt; =

      wrote:</SPAN>
      <BLOCKQUOTE class=3Dgmail_quote=20
      style=3D"PADDING-LEFT: 1ex; MARGIN: 0pt 0pt 0pt 0.8ex; =
BORDER-LEFT: rgb(204,204,204) 1px solid">I=20
        am in total agreement with DG on this matter (as set out below =
in=20
        <BR>her msg of today - as cited below - which msg of hers echoes =

        the<BR>substance of one of mine of yesterday, I=20
        believe).<BR>mg<BR><BR>On 30 Aug 2007, at 15:17, scr=EDobh =
Debbie Garside:=20
        <BR><BR>&gt; ... I think to devise a Terms <BR>&gt; and =
Definitions=20
        section would be very useful to newbies.&nbsp;&nbsp;It =
would<BR>&gt;=20
        also<BR>&gt; cement the terminology for ease of use in other =
documents=20
        wishing to<BR>&gt; reference the=20
    RFC.&nbsp;</BLOCKQUOTE></DIV></BLOCKQUOTE></DIV><BR>
    <DIV>
    <DIV>- -&nbsp;</DIV>
    <DIV>Marion Gunn * EGTeo (Estab.1991)</DIV>
    <DIV>27 P=E1irc an Fh=E9ithlinn, Baile an </DIV>
    <DIV>Bh=F3thair, Co. =C1tha Cliath, =C9ire.</DIV>
    <DIV>* <A onclick=3D"return top.js.OpenExtLink(window,event,this)"=20
    href=3D"mailto:mgunn@egt.ie" target=3D_blank>mgunn@egt.ie</A> * <A=20
    onclick=3D"return top.js.OpenExtLink(window,event,this)"=20
    href=3D"mailto:eamonn@egt.ie" target=3D_blank>eamonn@egt.ie</A>=20
    =
*</DIV></DIV><BR></SPAN></DIV><BR>_______________________________________=
________=20
    <BR>Ltru mailing list<BR><A=20
    onclick=3D"return top.js.OpenExtLink(window,event,this)"=20
    href=3D"mailto:Ltru@ietf.org">Ltru@ietf.org</A><BR><A=20
    onclick=3D"return top.js.OpenExtLink(window,event,this)"=20
    href=3D"https://www1.ietf.org/mailman/listinfo/ltru"=20
    =
target=3D_blank>https://www1.ietf.org/mailman/listinfo/ltru</A><BR><BR></=
BLOCKQUOTE></DIV><BR><BR=20
  clear=3Dall><BR>-- <BR>Mark </BLOCKQUOTE></BODY></HTML>

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From: Marion Gunn <mgunn@egt.ie>
Subject: Re: [Ltru] Re: extlang
Date: Fri, 31 Aug 2007 10:25:44 +0000
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On 30 Aug 2007, at 18:32, scr=EDobh Karen_Broome@spe.sony.com:

> For the record, I suspect John used this term -- in quotes =20
> indicating that this wasn't formal language -- because I had just =20
> used this term in an offline e-mail to him trying to clarify the =20
> straw poll question.


Thanks, Karen.

> I certainly meant nothing by it -- I was making sure that we were =20
> talking about the languages encapsulated by the macrolanguage, not =20
> the macrolanguage itself as was implied by the text. If this term =20
> has offended you, I'm sorry for my part in it.

For my part, I'm sorry if I seem to sometimes get in with a criticism =20=

too early (but, in this case, I felt we had already waited way too =20
long - days - for the list owners to deprecate that expression).

> I'm quite sure John did not use this in the spirit you are suggesting.

If he abides by what he says below, that will be good.

On 30 Aug 2007, at 19:02, John Cowan:
> ...
>
> That said, the term is indeed a poor one, and I do acknowledge the
> unconscious influence of Karen's email to me.  "Encompassed languages"
> is what I meant and should have said.


On 30 Aug 2007, at 18:32, scr=EDobh Karen_Broome@spe.sony.com:
>
> If m*crolanguage is an offensive term, perhaps macrolanguage is as =20
> well?

This episode most certainly casts some doubt on that term, if its use =20=

can so easily generate a concept we do not want to planted in the =20
mind of an innocent professional (such as yourself).
mg

- -
Marion Gunn * EGTeo (Estab.1991)
27 P=E1irc an Fh=E9ithlinn, Baile an
Bh=F3thair, Co. =C1tha Cliath, =C9ire.
* mgunn@egt.ie * eamonn@egt.ie *


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<HTML><BODY style=3D"word-wrap: break-word; -khtml-nbsp-mode: space; =
-khtml-line-break: after-white-space; "><DIV><DIV>On 30 Aug 2007, at =
18:32, scr=EDobh <A =
href=3D"mailto:Karen_Broome@spe.sony.com">Karen_Broome@spe.sony.com</A>:</=
DIV><BR class=3D"Apple-interchange-newline"><BLOCKQUOTE type=3D"cite"><P =
style=3D"margin: 0.0px 0.0px 0.0px 0.0px"><FONT face=3D"Helvetica" =
size=3D"2" style=3D"font: 10.0px Helvetica">For the record, I suspect =
John used this term -- in quotes indicating that this wasn't formal =
language -- because I had just used this term in an offline e-mail to =
him trying to clarify the straw poll question. =
<BR></FONT></P></BLOCKQUOTE><DIV><BR =
class=3D"khtml-block-placeholder"></DIV><DIV><BR =
class=3D"khtml-block-placeholder"></DIV>Thanks, =
Karen.</DIV><DIV><BR><BLOCKQUOTE type=3D"cite"><P style=3D"margin: 0.0px =
0.0px 0.0px 0.0px"><FONT face=3D"Helvetica" size=3D"2" style=3D"font: =
10.0px Helvetica">I certainly meant nothing by it -- I was making sure =
that we were talking about the languages encapsulated by the =
macrolanguage, not the macrolanguage itself as was implied by the text. =
If this term has offended you, I'm sorry for my part in it. =
<BR></FONT></P></BLOCKQUOTE><DIV><BR =
class=3D"khtml-block-placeholder"></DIV><DIV>For my part, I'm sorry if I =
seem to sometimes get in with a criticism too early (but, in this case, =
I felt we had already waited way too long - days - for the list owners =
to deprecate that expression).=A0</DIV><BR><BLOCKQUOTE type=3D"cite"><P =
style=3D"margin: 0.0px 0.0px 0.0px 0.0px"><FONT face=3D"Helvetica" =
size=3D"2" style=3D"font: 10.0px Helvetica">I'm quite sure John did not =
use this in the spirit you are suggesting.<SPAN =
class=3D"Apple-converted-space">=A0</SPAN></FONT></P></BLOCKQUOTE><BR></DI=
V><DIV>If he abides by what he says below, that will be =
good.</DIV><DIV><FONT class=3D"Apple-style-span" face=3D"Monaco" =
size=3D"2"><SPAN class=3D"Apple-style-span" style=3D"font-size: =
10px;"><BR style=3D""></SPAN></FONT><DIV><DIV style=3D""><FONT =
class=3D"Apple-style-span" face=3D"Monaco" size=3D"2"><SPAN =
class=3D"Apple-style-span" style=3D"font-size: 10px;">On 30 Aug 2007, at =
19:02, John Cowan:</SPAN></FONT></DIV><BLOCKQUOTE type=3D"cite"><DIV =
style=3D""><FONT class=3D"Apple-style-span" face=3D"Monaco" =
size=3D"2"><SPAN class=3D"Apple-style-span" style=3D"font-size: =
10px;">...</SPAN></FONT></DIV><DIV style=3D""><FONT =
class=3D"Apple-style-span" face=3D"Monaco" size=3D"2"><SPAN =
class=3D"Apple-style-span" style=3D"font-size: 10px;"><BR =
style=3D""></SPAN></FONT></DIV><DIV style=3D""><FONT =
class=3D"Apple-style-span" face=3D"Monaco" size=3D"2"><SPAN =
class=3D"Apple-style-span" style=3D"font-size: 10px;">That said, the =
term is indeed a poor one, and I do acknowledge =
the</SPAN></FONT></DIV><DIV style=3D""><FONT class=3D"Apple-style-span" =
face=3D"Monaco" size=3D"2"><SPAN class=3D"Apple-style-span" =
style=3D"font-size: 10px;">unconscious influence of Karen's email to =
me.=A0 "Encompassed languages"</SPAN></FONT></DIV><DIV style=3D""><FONT =
class=3D"Apple-style-span" face=3D"Monaco" size=3D"2"><SPAN =
class=3D"Apple-style-span" style=3D"font-size: 10px;">is what I meant =
and should have said.</SPAN></FONT></DIV></BLOCKQUOTE></DIV><BR =
class=3D"khtml-block-placeholder"></DIV><DIV><BR =
class=3D"khtml-block-placeholder"></DIV><DIV>On 30 Aug 2007, at 18:32, =
scr=EDobh <A =
href=3D"mailto:Karen_Broome@spe.sony.com">Karen_Broome@spe.sony.com</A>:</=
DIV><BLOCKQUOTE type=3D"cite"><BR style=3D""><FONT =
class=3D"Apple-style-span" size=3D"2"><SPAN class=3D"Apple-style-span" =
style=3D"font-size: 10px;">If m*crolanguage is an offensive term, =
perhaps macrolanguage is as well? </SPAN></FONT></BLOCKQUOTE><DIV><BR =
class=3D"khtml-block-placeholder"></DIV>This episode most certainly =
casts some doubt on that term, if its use can so easily generate a =
concept we do not want to planted in the mind of an innocent =
professional (such as yourself).<DIV>mg<BR><BR><DIV> <DIV>- =
-=A0</DIV><DIV>Marion Gunn * EGTeo (Estab.1991)</DIV><DIV>27 P=E1irc an =
Fh=E9ithlinn, Baile an </DIV><DIV>Bh=F3thair, Co. =C1tha Cliath, =
=C9ire.</DIV><DIV>* <A href=3D"mailto:mgunn@egt.ie">mgunn@egt.ie</A> * =
<A href=3D"mailto:eamonn@egt.ie">eamonn@egt.ie</A> *</DIV>  =
</DIV><BR></DIV></BODY></HTML>=

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From ltru-bounces@ietf.org Fri Aug 31 13:26:32 2007
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From: "Doug Ewell" <dewell@roadrunner.com>
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Subject: Re: [Ltru] Re: extlang
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Marion Gunn <mgunn at egt dot ie> wrote:

>> If m*crolanguage is an offensive term, perhaps macrolanguage is as 
>> well?
>
> This episode most certainly casts some doubt on that term, if its use 
> can so easily generate a concept we do not want to planted in the mind 
> of an innocent professional (such as yourself).

Okay, we need to end this line of insinnuendo *right now*.

NOBODY in this Working Group, which is chartered to provide a mechanism 
for tagging content in over 7,600 languages and variants, is interested 
in "denigrating," or insulting, or relegating to second-class status, 
any of those 7,600 languages.  I am certain beyond question that neither 
Karen nor John in particular has that in mind.  We would not be in this 
WG if that were the case.

ISO 639-3 introduced a new word, "macrolanguage," for a concept such as 
"Chinese" which is considered a single language in some contexts and 
multiple languages in others.  It's a useful concept, and the term is 
more or less arbitrary; I doubt I could come up with a better one in 
five minutes.

The word "encompassed" has been used in ISO 639-3 to describe languages 
like Cantonese and Wu that are covered under the "macrolanguage" called 
Chinese.  The term "encompassed language" doesn't flow off the tongue 
nearly as easily as its counterpart "macrolanguage," and might not have 
caught on yet, so Karen apparently used the ad-hoc term "microlanguage" 
in a private message and John repeated it on-list.

"Micro-" is an obvious opposite of "macro-".  This sort of word-forming 
process is common among technical-minded people, including much of the 
LTRU membership (I make up words every day).  There is no negative 
connotation associated with this "micro-" prefix, least of all in the 
minds of people who work every day with "microcomputers" which use 
"microprocessors" that execute "microcode" and run software produced by 
a business giant called "Microsoft."

We had to endure a similar accusation some time ago over the terms 
"primary language subtag" and "extended language subtag."  No, we do not 
consider some languages to be "primary" and other, less fortunate 
languages to be "extended"; those are terms used to describe the short 
alphabetic identifiers that go into a language tag.  The same is true 
for "macrolanguage" and whatever we choose to call the individual 
languages they stand for.

Let's all get back to the business at hand and show some respect for the 
intentions of our fellow list members.  A little less caffeine might be 
a good idea as well.

--
Doug Ewell · Fullerton, California, USA · RFC 4645 · UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages



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Subject: Re: [Ltru] Re: extlang
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I'd also add that I'm far from innocent, but that discussion is outside of =

the scope of the charter so let's get back to business. Thanks, Doug.

Karen Broome




"Doug Ewell" <dewell@roadrunner.com>=20
08/31/2007 10:26 AM

To
"LTRU Working Group" <ltru@ietf.org>
cc

Subject
Re: [Ltru] Re: extlang






Marion Gunn <mgunn at egt dot ie> wrote:

>> If m*crolanguage is an offensive term, perhaps macrolanguage is as=20
>> well?
>
> This episode most certainly casts some doubt on that term, if its use=20
> can so easily generate a concept we do not want to planted in the mind=20
> of an innocent professional (such as yourself).

Okay, we need to end this line of insinnuendo *right now*.

NOBODY in this Working Group, which is chartered to provide a mechanism=20
for tagging content in over 7,600 languages and variants, is interested=20
in "denigrating," or insulting, or relegating to second-class status,=20
any of those 7,600 languages.  I am certain beyond question that neither=20
Karen nor John in particular has that in mind.  We would not be in this=20
WG if that were the case.

ISO 639-3 introduced a new word, "macrolanguage," for a concept such as=20
"Chinese" which is considered a single language in some contexts and=20
multiple languages in others.  It's a useful concept, and the term is=20
more or less arbitrary; I doubt I could come up with a better one in=20
five minutes.

The word "encompassed" has been used in ISO 639-3 to describe languages=20
like Cantonese and Wu that are covered under the "macrolanguage" called=20
Chinese.  The term "encompassed language" doesn't flow off the tongue=20
nearly as easily as its counterpart "macrolanguage," and might not have=20
caught on yet, so Karen apparently used the ad-hoc term "microlanguage"=20
in a private message and John repeated it on-list.

"Micro-" is an obvious opposite of "macro-".  This sort of word-forming=20
process is common among technical-minded people, including much of the=20
LTRU membership (I make up words every day).  There is no negative=20
connotation associated with this "micro-" prefix, least of all in the=20
minds of people who work every day with "microcomputers" which use=20
"microprocessors" that execute "microcode" and run software produced by=20
a business giant called "Microsoft."

We had to endure a similar accusation some time ago over the terms=20
"primary language subtag" and "extended language subtag."  No, we do not=20
consider some languages to be "primary" and other, less fortunate=20
languages to be "extended"; those are terms used to describe the short=20
alphabetic identifiers that go into a language tag.  The same is true=20
for "macrolanguage" and whatever we choose to call the individual=20
languages they stand for.

Let's all get back to the business at hand and show some respect for the=20
intentions of our fellow list members.  A little less caffeine might be=20
a good idea as well.

--
Doug Ewell =B7 Fullerton, California, USA =B7 RFC 4645 =B7 UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
http://www.alvestrand.no/mailman/listinfo/ietf-languages



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From ltru-bounces@ietf.org Fri Aug 31 14:26:36 2007
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Addison Phillips <addison at yahoo dash inc dot com> wrote:

> 1. ... This effort was chartered as a fairly minor one focused on 
> extlangs. As an editor, I do occasionally restructure or rewrite text 
> as a result of the changes we are currently working on. However, I 
> don't feel we should proceed, paragraph by paragraph, to alter the 
> document at length.

i agree.  I also regret the extent to which LTRU 2.0 has expanded in 
scope.  I think it will actually be a bit ironic if we come out of LTRU 
2.0 with a pair of documents to replace 4646 and 4645, and the one thing 
we *didn't* do is add extlangs.  :-)

> 3. I note that the original comment was about the term 'extlang'. 
> However, 'extlang' is NOT a term (although we use it as one on this 
> list). It has two uses in the document:
>
>   i. It is the name of a production in the ABNF grammar.
>   ii. It is a subtag 'type' string. It is references very carefully 
> this way in all cases.
>
> The proper term is "extended language subtag" and it is defined in 
> Section 2.2.2. Note that this is the same part of the document where 
> the other terminology is defined.

For my part, I understand that "extlang" is not the official name for 
this type of subtag, and didn't mean to propose defining it formally if 
you were talking to me.  We use it all the time because it's easier to 
type 7 letters than 24.

> 4. I suspect that a Terms and Definitions appendix will serve to make 
> the document longer, but will little avail readers.

One thing the document does not need is to be longer.  If we do add such 
a section, we should attempt to strip out the now-redundant inline 
definitions that exist throughout the document.

> However, me tendency is to think...

Now hold on, is that en-IE or en-scotland?  Oh wait, that reminds me...

--
Doug Ewell · Fullerton, California, USA · RFC 4645 · UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
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From ltru-bounces@ietf.org Fri Aug 31 19:25:09 2007
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Randy Presuhn <randy underscore presuhn at mindspring dot com> wrote:

> Fallback has probably been over-sold.

I think at least two things have been oversold.  Fallback is definitely 
one of them.  As I've said so many times, after all the effort and delay 
we went through to generate RFC 4647, after everything we've created 
that might require RFC 3066-style matching and validation engines to be 
modified or rewritten, we are still hooked on the idea that 
remove-from-right truncation is of paramount importance, and that a 
mechanism like extlang that might exhibit unwanted results in some 
RFR-truncation scenarios is thereby fatally flawed.

The other thing that has been oversold is the identification of a 
macrolanguage with one of its encompassed languages.  From reading this 
thread, you would think people are making a conscious decision to tag 
Mandarin Chinese, and only Mandarin Chinese, as "zh", and tag other 
flavors of Chinese as "zh-yue" or "zh-hakka" or whatever.  Furthermore, 
you would think people are planning to make the same decision with 
respect to Arabic, explicitly equating "ar" with Standard Arabic and not 
with any other flavor, as soon as RFC 4646bis comes out with its 30-odd 
new Arabic subtags.

I don't think this sort of conscious decision is what drives the current 
tagging scenario.  Instead, consider the following:

1.  Most (not all) of the content that is currently tagged with BCP 47 
language tags tends to be written, not spoken, sung, etc.  This will not 
necessarily be the case forever, but it is likely the case today.

2.  Most written Chinese that is tagged tends to be either Mandarin 
Chinese, or written according to Mandarin conventions.

3.  Almost all written Arabic that is tagged tends to be Standard 
Arabic.

4.  The tags registered under RFC 3066, and grandfathered into RFC 4646 
for individual Chinese languages, including Mandarin, are often 
considered (incorrectly) to be exceptions to the "normal" tagging 
syntax, and are used relatively infrequently.  No such tags exist at all 
yet for individual Arabic variations.

Given this, it is natural that in current practice "zh" tends to 
correspond to Mandarin and "ar" tends to correspond to Standard Arabic. 
That doesn't mean we should "bake" this assumption into our solution. 
People are not saying, "I will use plain 'zh' for Mandarin but 'zh-yue' 
for Cantonese."  That's why "zh-cmn" was registered, to make this 
explicit.  "zh" is *not* explicit.


A lot of attention is being paid to the "fallback" scenario and the 
equation of a macrolanguage X with one specific flavor X1, such that the 
question being asked is whether all speakers of X2 and X3 and X4 can 
also comprehend X1, or each other.  This isn't how I understand 
macrolanguages at all.  There are contexts in which X1 and X2 and so 
forth are considered the same language, and others in which they are 
not.  Tagging the unified language as "X" for the contexts where it 
applies, and tagging the individual languages as "X-X1", "X-X2", and so 
forth, where they apply, reflects this relationship and establishes that 
"X" is sometimes a legitimate way to think of individual language X1. 
An informative "Macrolanguage" field doesn't do this, because it exists 
only in the Registry and not in the tag.

In object-oriented (OO) design, there is a concept called "is a" that I 
think describes the macrolanguage model well.  In OO design, you have a 
class called "vehicle" and then you have other classes such as "car," 
"boat," and "airplane" that are subclasses of "vehicle."  One would say 
that a car, boat, or airplane "is a" vehicle.  That doesn't imply that 
any of the subclasses are completely equivalent to the superclass; you 
would not say that a vehicle "is a" car, and you would certainly not 
presume that a car is always a suitable substitute ("fallback") for any 
other type of vehicle, even if it is the most common, and even if people 
sometimes use the word "vehicle" when they specifically mean "car."

*That* is what extlang "bakes into" the tag: the superclass-subclass 
relationship that Mandarin "is a" Chinese, and the notion that sometimes 
it is appropriate to think of it as "Mandarin" and sometimes as 
"Chinese."


Randy wanted specific wording.  There's too much specific to extlangs 
and macrolanguages to call out explicitly in OLD: and NEW: blocks, but I 
suppose my first choice, as I predicted before, would be to go back to 
what we had in draft-4646bis-06.  That also means not changing the rules 
to prohibit adding new extlangs in the future, which Addison and even 
John don't agree with, so I don't really expect this to happen.

My second choice, if we absolutely must jettison extlangs, would be to 
go all the way and not pretend to recognize the ISO 639-3 macrolanguage 
structure at all.  That means not having a Macrolanguage field, since as 
we are often reminded, it is not sufficient for so-called "fallback" to 
determine what language to serve to an arbitrary requester in case the 
requested language is unavailable.  If we don't expect software tools to 
parse and match tags intelligently instead of using Fred Flintstone RFR 
truncation, why would we expect them to consult a Macrolanguage field to 
see if there's a relationship of unspecified nature between X1 and X?

My third choice would be to get rid of extlangs but keep the 
Macrolanguage field.  I still don't agree with keeping both extlangs 
*and* the Macrolanguage field.  John says that one would be normative 
and govern the structure of the tag, and the other would be informative, 
and he and I understand this and so does probably everyone else on this 
list, but I still think it would cause colossal confusion among ordinary 
users who have not been thinking about this stuff for years.

At the very least, the new paragraph in Section 4.1 beginning "In 
particular" needs to be cleaned up to reflect whatever decision is made 
regarding extlangs.  Right now it refers to "languages such as 'yue'" 
and falling back from "yue-Hans-CN" to "zh-Hans-CN"; these "yue" 
references should be "zh-yue" if we decide to keep extlangs.

I'll go along with whatever decision is made, but I don't think one 
implementation from one of the possible language-tagging perspectives, 
with results characterized as "it just doesn't seem to work well," 
should be sufficient to reverse the tide of the past 3 years.

--
Doug Ewell · Fullerton, California, USA · RFC 4645 · UTN #14
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