GNU bug report logs - #21232
[PATCH] dfa: remove range, collating element and equivalent class support for multibyte locales

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Norihiro Tanaka <noritnk <at> kcn.ne.jp>
Subject: bug#21232: closed (Re: bug#21232: [PATCH] dfa: remove range,
 collating element and equivalent class support for multibyte locales)
Date: Wed, 12 Aug 2015 14:52:03 +0000

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Your bug report

#21232: [PATCH] dfa: remove range, collating element and equivalent class support for multibyte locales

which was filed against the grep package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 21232 <at> debbugs.gnu.org.

-- 
21232: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=21232
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

[Message part 2 (message/rfc822, inline)]

From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Norihiro Tanaka <noritnk <at> kcn.ne.jp>, 21232-done <at> debbugs.gnu.org
Subject: Re: bug#21232: [PATCH] dfa: remove range,
 collating element and equivalent class support for multibyte locales
Date: Wed, 12 Aug 2015 07:51:55 -0700

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Thanks, I installed that patch.  If you configure with --enable-gcc-warnings 
(which I recommend), the patch causes GCC to complain about an unused variable 
wc2.  I fixed that by installing the attached further patch, which adds a minor 
optimization.

[0001-dfa-optimize-x-x.patch (text/x-diff, attachment)]

[Message part 5 (message/rfc822, inline)]

From: Norihiro Tanaka <noritnk <at> kcn.ne.jp>
To: <bug-grep <at> gnu.org>
Subject: [PATCH] dfa: remove range,
 collating element and equivalent class support for multibyte locales
Date: Tue, 11 Aug 2015 20:18:37 +0900

[Message part 6 (text/plain, inline)]

Now DFA does not support collating element and equivalent class for
multibyte locales at all, as POSIX does not give us any APIs to refer
to locale data to support them.

Even if DFA has supported them, they will be very slow and other codes
will be prevented from optimizing.

This patch removes codes to support them.

[0001-dfa-remove-range-collating-element-and-equivalent-cl.patch (text/plain, attachment)]

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