gnu/116363: isspace broken for UTF-8 locales

[Andrey Chernov]

On Mon, Sep 17, 2007 at 01:22:14AM +0900, Hye-Shik Chang wrote:
> In fact, UTF-8.src defines values for not UTF-8 but Unicode codepoints.
> Using the Unicode codepoint as wchar_t's internal representation gives
> much benefit.  I think we would be better to make isspace() and
> other ctypes functions aware of "encoding".  IIRC, tjr@ provided the
> workaround as in the URL mentioned above and said that it would get
> a chance to be fixed in 6 or 7 on 2004.

Currently wchar_t represents given encoding in all places including 
wc<->mbr conversions. To make it UCS-4-only instead we need to rewrite the 
whole locale system from scratch and I see no benefits from that way. 
There is no simple workaround exists.

In any case there is no excuse to make really-UCS-4.src to mimic 
UTF-8.src. Providing proper UTF-8.src is much less painful way than whole 
locale rewritting and I almost half way on converting UCS-4 source to it.

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