[PATCH] grep: lookahead optimization can be used with -L option

[Junio C Hamano <gitster@pobox.com>]

This is not an "inverted logic" option ("-v") that shows lines
that do not match given pattern as hits, and skipping lines that
cannot possibly match wouldn't change its outcome.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---

 * Should be squashed in to the "lookahead" patch.

 grep.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/grep.c b/grep.c
index 048b982..03ffcd4 100644
--- a/grep.c
+++ b/grep.c
@@ -614,7 +614,7 @@ static int should_lookahead(struct grep_opt *opt)
 
 	if (opt->extended)
 		return 0; /* punt for too complex stuff */
-	if (opt->invert || opt->unmatch_name_only)
+	if (opt->invert)
 		return 0;
 	for (p = opt->pattern_list; p; p = p->next) {
 		if (p->token != GREP_PATTERN)
-- 
1.6.6.280.ge295b7.dirty