tree 050ff75bc770f991d008fbb55abd8cf5a6901fd7
parent a9b2d42486ee0b461220bf3895114926d9ddf9be
author René Scharfe <rene.scharfe@lsrfire.ath.cx> 1244045941 +0200
committer Junio C Hamano <gitster@pobox.com> 1244053949 -0700

grep: fix empty word-regexp matches

The command "git grep -w ''" dies as soon as it encounters an empty line,
reporting (wrongly) that "regexp returned nonsense".  The first hunk of
this patch relaxes the sanity check that is responsible for that,
allowing matches to start at the end.

The second hunk complements it by making sure that empty matches are
rejected if -w was specified, as they are not really words.

GNU grep does the same:

	$ echo foo | grep -c ''
	1
	$ echo foo | grep -c -w ''
	0

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>