format-patch: improve head calculation for cover-letter

diff --git a/sequencer.h b/sequencer.h
index 9d57d57524d411c54d55346a5ecff67bc256595c..1fc22dcabe132cd437e7b0d3c56588c8cd7e63f2 100644 (file)
--- a/sequencer.h
+++ b/sequencer.h
@@ -6,6 +6,8 @@
 #define SEQ_TODO_FILE  "sequencer/todo"
 #define SEQ_OPTS_FILE  "sequencer/opts"
 
+#define APPEND_SIGNOFF_DEDUP (1u << 0)
+
 enum replay_action {
        REPLAY_REVERT,
        REPLAY_PICK
@@ -48,6 +50,6 @@ int sequencer_pick_revisions(struct replay_opts *opts);
 
 extern const char sign_off_header[];
 
-void append_signoff(struct strbuf *msgbuf, int ignore_footer);
+void append_signoff(struct strbuf *msgbuf, int ignore_footer, unsigned flag);
 
 #endif