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Re: wadegile and pinyin LANGUAGE SUBTAG REGISTRATION FORMs

John Cowan <cowan@ccil.org> Wed, 03 September 2008 14:52 UTC

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Date: Wed, 03 Sep 2008 10:52:16 -0400
To: Peter Constable <petercon@microsoft.com>
Subject: Re: wadegile and pinyin LANGUAGE SUBTAG REGISTRATION FORMs
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Peter Constable scripsit:

> I think we all agree that Latin is implied. Chinese is also implied. By
> this rationale, a complete tag of "wadegile" would work just as
> well as "zh-wadegile" (BCP47 syntax requirements aside). In terms of
> semantic representation, that is true: "wadegile" contains just as
> much information as does "zh-wadegile".

However, all tags MUST have a language subtag, so this analogy is not on all fours.

> Those are made more complicated if "Latn" is not part of the prefix for
> "wadegile" and "pinyin".

You still need to know that "wadegile" and "pinyin" imply Latin, because
the Prefix for a subtag is only a SHOULD, so people are still free to
send you "zh-wadegile" whether the Prefix says "zh" or "zh-Latn".

-- 
My confusion is rapidly waxing          John Cowan
For XML Schema's too taxing:            cowan@ccil.org
    I'd use DTDs                        http://www.ccil.org/~cowan
    If they had local trees --
I think I best switch to RELAX NG.

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