GNU bug report logs - #24975
Matching issues with characters whose encoding ends in some other character

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From: Norihiro Tanaka <noritnk <at> kcn.ne.jp>
To: jim <at> meyering.net
Cc: 24975 <at> debbugs.gnu.org, stephane.chazelas <at> gmail.com
Subject: bug#24975: Matching issues with characters whose encoding ends in some other character
Date: Mon, 28 Nov 2016 22:49:27 +0900

[Message part 1 (text/plain, inline)]

Jim Meyering <jim <at> meyering.net> wrote:

> I suspect this won't be the last word in this area, because it feels
> like we should be able to adjust DFA's tables so that people using
> such locales can retain DFA's efficiency without the bug in the
> current implementation.

Hi Jim,

It is a bug in dfa for period expression in non-UTF8 locales.  dfa
calculates transition for single byte characters and a multibyte
character separately and merge both results.  However, if backs to
an initial state in transition for single byte characters, we should
stop matching single byte characters.

Thanks,
Norihiro

[0001-dfa-avoid-match-middle-in-multibyte-character.patch (text/plain, attachment)]

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