Fix silly typo in new builtin grep

From: Linus Torvalds <torvalds@osdl.org>
Date: May 16, 2006, 00:54 UTC
Message-ID: <Pine.LNX.4.64.0605151743360.3866@g5.osdl.org>

The "-F" flag apparently got mis-translated due to some over-eager copy-paste work into a duplicate "-H" when using the external grep.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

Me likee the new built-in grep. The ability to say

	git grep __make_request v2.6.13 -- '*.c'

to grep for it in a specific version is well worth the fact that it obviously ends up being slower than grepping in the currently checked-out tree. It's doing a hell of a lot more, but despite that it's not at all that slow.

(In fact, I would say that doing the above command in just 4 seconds is damn impressive - it's a large code-base, and v2.6.13 is several months, and over 20 _thousand_ revisions ago).

And now it doesn't have any performance downsides, so it's all upside.

Good job. Pls merge into mainline, I think the "grep per revision" is a killer feature.

diff --git a/builtin-grep.c b/builtin-grep.c
index 3d6e515..66111de 100644
--- a/builtin-grep.c
+++ b/builtin-grep.c
@@ -455,7 +455,7 @@ static int external_grep(struct grep_opt
 	push_arg("grep");
 	push_arg("-H");
 	if (opt->fixed)
-		push_arg("-H");
+		push_arg("-F");
 	if (opt->linenum)
 		push_arg("-n");
 	if (opt->regflags & REG_EXTENDED)