GNU bug report logs - #16966
[PATCH] grep: optimization with the superset of DFA

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Package: grep;

Reported by: Norihiro Tanaka <noritnk <at> kcn.ne.jp>

Date: Sat, 8 Mar 2014 05:43:01 UTC

Severity: normal

Tags: patch

Done: Paul Eggert <eggert <at> cs.ucla.edu>

Bug is archived. No further changes may be made.

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From: Norihiro Tanaka <noritnk <at> kcn.ne.jp>
To: Paolo Bonzini <bonzini <at> gnu.org>
Cc: 16966 <at> debbugs.gnu.org
Subject: bug#16966: [PATCH] grep: optimization with the superset of DFA
Date: Wed, 02 Apr 2014 00:49:19 +0900

Hi Paolo,

> I'm worried that the "STAR" method will match basically everything.

If no normal char and/or CSET is included in the pattern, the superset
won't be used.

> We're using something like CSET{1,mb_cur_max} already for UTF-8, so the size increase for that should not be too bad.

We cannot apply its rule to non-UTF8 locales.

Norihiro
This bug report was last modified 11 years and 107 days ago.

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