From: Michał Kiedrowicz <michal.kiedrowicz@gmail.com>
Date: Sat, 25 Feb 2012 09:24:28 +0000 (+0100)
Subject: grep -P: Fix matching ^ and $
X-Git-Tag: v1.7.8.5~1
X-Git-Url: https://git.lorimer.id.au/gitweb.git/diff_plain/fba4f1259db8e5dc47b1c8e6e344c61f7eb4a9df?ds=sidebyside;hp=fba4f1259db8e5dc47b1c8e6e344c61f7eb4a9df

grep -P: Fix matching ^ and $

When "git grep" is run with -P/--perl-regexp, it doesn't match ^ and $ at
the beginning/end of the line.  This is because PCRE normally matches ^
and $ at the beginning/end of the whole text, not for each line, and "git
grep" passes a large chunk of text (possibly containing many lines) to
pcre_exec() and then splits the text into lines.

This makes "git grep -P" behave differently from "git grep -E" and also
from "grep -P" and "pcregrep":

$ cat file
a
b
$ git grep --no-index -P '^ ' file
$ git grep --no-index -E '^ ' file
file: b
$ grep -c -P '^ ' file
b
$ pcregrep -c '^ ' file
b

Reported-by: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
Signed-off-by: Michał Kiedrowicz <michal.kiedrowicz@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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