format-patch --notes: show notes after three-dashes

When inserting the note after the commit log message to format-patch
output, add three dashes before the note.  Record the fact that we
did so in the rev_info and omit showing duplicated three dashes in
the usual codepath that is used when notes are not being shown.

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

1 files changed, 1 insertions, 0 deletions

diff --git a/revision.h b/revision.h
index a95bd0b..059bfff 100644
--- a/revision.h
+++ b/revision.h
@@ -111,6 +111,7 @@ struct rev_info {
 
 	/* Format info */
 	unsigned int	shown_one:1,
+			shown_dashes:1,
 			show_merge:1,
 			show_notes:1,
 			show_notes_given:1,