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Date: Thu, 21 Jan 2010 17:03:09 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: Japanese/Chinese language question
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On Jan 21 16:41, Corinna Vinschen wrote:
> On Jan 21 10:04, Mark J. Reed wrote:
[Intersting stuff]
> 
> Thanks for the info.  However...
> 
> 
>   linux$ cat jp.c
>   #include <stdio.h>
>   #include <locale.h>
>   #include <wchar.h>
> 
>   int
>   main (int argc, char **argv)
>   {
>     setlocale (LC_ALL, "ja_JP.UTF-8");
>     /* U+3042 = Hiragana letter A
>        U+30a2 = Katakana letter A
>        U+ff71 = Halfwidth Katakana letter A */
>     printf ("%d\n", wcscoll (L"\x3042", L"\x30a2"));
>     printf ("%d\n", wcscoll (L"\xff71", L"\x30a2"));
>     return 0;
>   }
>   linux$ gcc jp.c -o jp
>   linux$ ./jp
>   -83
>   -340
> 
> I expected that at least one of the comparisons returns 0.
> Am I doing something wrong?

Uh, I think I understand now.  I wasn't actually doing something wrong,
rather my expectations were wrong.  The idea of the coll/xfrm functions
is to generate sorting orders.  The order as such is locale-dependent,
but different strings shouldn't actually being treated as equal.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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