[tei-council] Extended language subtags must begin with the letter "s".???

[Martin Holmes]

I'm throwing this out again to everyone, since I got no response last 
time. Does anyone know where this idea came from? I've been looking at 
some of the P5 files on CBETA, which I think is Chris's largest project, 
and I don't find anything more complex than "en", "zh, "pi" and "sa".

Unless anyone can come up with any source for this, I'm going to 
conclude that it's flat-out wrong, and remove it. I'll have to replace 
the two examples which use it, as well:

 > zh-s-nan (the Southern Min language of the macrolanguage Chinese)
 >
 > zh-s-nan-Hans-CN (the Southern Min language of the macrolanguage Chinese
 > as spoken in China written in simplified Characters)

Cheers,
Martin

On 12-06-26 09:32 AM, Martin Holmes wrote:
> CH says:
>
> "Extended language subtags must begin with the letter "s".
>    They must follow the primary subtag and precede subtags that do
>    define other properties of the language.  The order is significant."
>
> I can't find any justification for this in BCP 47 or anywhere else, and
> it's surely untrue -- . Does anyone know where this came from? Basic
> examples from BCP 47 surely counter it, too:
>
> "zh-gan", "zh-yue", "zh-cmn"
>
> I'm copying Syd on this because he knows a lot about this stuff.
>
> Cheers,
> Martin
>