GNU bug report logs - #40634
Massive pattern list handling with -E format seems very slow since 2.28.

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Package: grep;

Reported by: fryasu <at> yahoo.co.jp

Date: Wed, 15 Apr 2020 02:21:01 UTC

Severity: normal

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

Bug is archived. No further changes may be made.

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Message #11 received at 40634 <at> debbugs.gnu.org (full text, mbox):

From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Norihiro Tanaka <noritnk <at> kcn.ne.jp>, 40634 <at> debbugs.gnu.org
Cc: fryasu <at> yahoo.co.jp
Subject: Re: bug#40634: Massive pattern list handling with -E format seems
 very slow since 2.28.
Date: Thu, 16 Apr 2020 09:31:32 -0700

On 4/15/20 11:56 PM, Norihiro Tanaka wrote:

> It seems to a lot of time is spent in dfa.c:replace().
> It was added at d6df3873c7abc243683d0e8fccbfde4e76f23e53 in gnulib.

It would be pretty drastic to revert that patch. Is there some better way to 
move forward?
This bug report was last modified 4 years and 329 days ago.

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