GNU bug report logs - #22655
grep-2.21 (and git master): --null-data and ranges work in an odd way (-P works fine)

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Package: grep;

Reported by: Sergei Trofimovich <slyfox <at> gentoo.org>

Date: Sat, 13 Feb 2016 23:24:01 UTC

Severity: normal

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

Bug is archived. No further changes may be made.

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From: Stephane Chazelas <stephane.chazelas <at> gmail.com>
To: Paul Eggert <eggert <at> cs.ucla.edu>
Cc: 22655 <at> debbugs.gnu.org
Subject: bug#22655: grep -Pz '^' now fails!
Date: Fri, 18 Nov 2016 16:24:02 +0000

2016-11-18 07:54:29 -0800, Paul Eggert:
> Stephane Chazelas wrote:
> >Can that bug please be reopened so it can be addressed
> >differenly (PCRE_MULTILINE removed, PCRE_DOLLAR_ENDONLY added)?
> 
> Removing PCRE_MULTILINE will make 'grep' waaaay slower. Can you
> think of a way of fixing the bug that doesn't involve removing
> PCRE_MULTILINE?

Why would it make it slower. AFAICT, PCRE_MULTILINE *adds*
some overhead. It is really meant to be only about changing the
behaviour of ^ and $.

Not-PCRE_MULTILINE is the default about everywhere else
(including less, pcregrep, ssed -R).

Do you have any particular test-case in mind?

-- 
Stephane
This bug report was last modified 8 years and 190 days ago.

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