range-diff: suppress the diff headers

When showing the diff between corresponding patches of the two branch
versions, we have to make up a fake filename to run the diff machinery.

That filename does not carry any meaningful information, hence tbdiff
suppresses it. So we should, too.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/diff.h b/diff.h
index a14895bb82..d88ceb3570 100644
--- a/diff.h
+++ b/diff.h
@@ -94,6 +94,7 @@ struct diff_flags {
 	unsigned funccontext:1;
 	unsigned default_follow_renames:1;
 	unsigned stat_with_summary:1;
+	unsigned suppress_diff_headers:1;
 };
 
 static inline void diff_flags_or(struct diff_flags *a,