replace: remove signature when using --graft

It could be misleading to keep a signature in a
replacement commit, so let's remove it.

Note that there should probably be a way to sign
the replacement commit created when using --graft,
but this can be dealt with in another commit or
patch series.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/commit.h b/commit.h
index b695aa4..c81ba85 100644
--- a/commit.h
+++ b/commit.h
@@ -332,6 +332,8 @@ struct commit *get_merge_parent(const char *name);
 
 extern int parse_signed_commit(const struct commit *commit,
 			       struct strbuf *message, struct strbuf *signature);
+extern int remove_signature(struct strbuf *buf);
+
 extern void print_commit_list(struct commit_list *list,
 			      const char *format_cur,
 			      const char *format_last);