GNU bug report logs - #18051
24.3.92; ls-lisp: Sorting; make ls-lisp-string-lessp a normal function?

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From: Eli Zaretskii <eliz <at> gnu.org>
To: michael.albinus <at> gmx.de
Cc: michael_heerdegen <at> web.de, 18051 <at> debbugs.gnu.org
Subject: bug#18051: 24.3.92; ls-lisp: Sorting; make ls-lisp-string-lessp a normal function?
Date: Sun, 17 Aug 2014 20:55:09 +0300

> Date: Sun, 17 Aug 2014 19:38:36 +0300
> From: Eli Zaretskii <eliz <at> gnu.org>
> Cc: michael_heerdegen <at> web.de, 18051 <at> debbugs.gnu.org
> 
> > From: Michael Albinus <michael.albinus <at> gmx.de>
> > Cc: michael_heerdegen <at> web.de,  18051 <at> debbugs.gnu.org
> > Date: Sat, 16 Aug 2014 23:52:16 +0200
> > 
> > Just being curious, I've taken g_utf8_collate from the glib for a
> > test. It doesn't work bad.
> 
> Are you sure this is implemented in Glib, not in the underlying libc
> (glibc in your case, I presume)?

Answering myself here: by reading the source of g_utf8_collate, it is
clear that the implementation is elsewhere.  In particular, in any
environment that defines __STDC_ISO_10646__ (as does glibc),
g_utf8_collate simply calls wcscoll, after converting the UTF-8
strings to wide-character strings.

So I think a better alternative would be to base the implementation of
this feature on the system libraries directly.  I think most modern
platforms have the necessary facilities.

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