[PATCH] git-grep: allow patterns starting with -

Signed-off-by: Matthias Lederhofer <redacted>
---
I did not find another way to use patterns starting with -, if it is
possible without the patch please tell me and ignore the patch :)
example:
% git grep -- --bla HEAD HEAD~1 -- --foo
HEAD:--foo/bla:test --bla foo

 builtin-grep.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/builtin-grep.c b/builtin-grep.c
index 2e7986c..d0677cc 100644
--- a/builtin-grep.c
+++ b/builtin-grep.c

@@ -817,8 +817,13 @@ int cmd_grep(int argc, const char **argv
 			}
 			usage(builtin_grep_usage);
 		}
-		if (!strcmp("--", arg))
+		if (!strcmp("--", arg)) {
+			if (!opt.pattern_list && argc > 0) {
+				argc--; argv++;
+				add_pattern(&opt, *argv, "command line", 0);
+			}
 			break;
+		}
 		if (*arg == '-')
 			usage(builtin_grep_usage);
 

-- 
1.4.1.rc1.g29f4a-dirty