sequencer: fix cleanup with --signoff and -x

Before commit 356ee4659b ("sequencer: try to commit without forking 'git
commit'", 2017-11-24) when --signoff or -x were given on the command
line the commit message was cleaned up with --cleanup=space or
commit.cleanup if it was set. Unfortunately this behavior was lost when
I implemented committing without forking. Fix this and add some tests to
catch future regressions.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/sequencer.h b/sequencer.h
index 4d505b3..82bc7a4 100644
--- a/sequencer.h
+++ b/sequencer.h
@@ -47,6 +47,7 @@ struct replay_opts {
 
 	char *gpg_sign;
 	enum commit_msg_cleanup_mode default_msg_cleanup;
+	int explicit_cleanup;
 
 	/* Merge strategy */
 	char *strategy;