[PATCH v2 1/3] format-patch: fix dashdash usage

[Felipe Contreras <felipe.contreras@gmail.com>]

$ git format-patch <committish> -- <path-not-in-working-dir>

Doesn't work otherwise. The current code would complain that the path is
not in the working tree and that "--" must be specified, even if the
user _did_ specify it. This happens because "--" is removed from the
arguments, so we need to pass PARSE_OPT_KEEP_DASHDASH to parse_options
to avoid that.

Comments by Junio C Hamano.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
---
 builtin-log.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/builtin-log.c b/builtin-log.c
index 33fa6ea..1766349 100644
--- a/builtin-log.c
+++ b/builtin-log.c
@@ -976,7 +976,8 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
 	 */
 	argc = parse_options(argc, argv, prefix, builtin_format_patch_options,
 			     builtin_format_patch_usage,
-			     PARSE_OPT_KEEP_ARGV0 | PARSE_OPT_KEEP_UNKNOWN);
+			     PARSE_OPT_KEEP_ARGV0 | PARSE_OPT_KEEP_UNKNOWN |
+			     PARSE_OPT_KEEP_DASHDASH);
 
 	if (do_signoff) {
 		const char *committer;
-- 
1.6.6.rc0.59.g5117f7.dirty