[PATCH v2 3/3] sequencer.c: don't die on invalid cleanup_arg

[Denton Liu <liu.denton@gmail.com>]

When get_cleanup_mode was provided with an invalid cleanup_arg, it used
to die. Warn user and fallback to default behaviour if an invalid
cleanup_arg is given.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
---
 sequencer.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/sequencer.c b/sequencer.c
index 5c04bae7ac..f9bdfa90ad 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -502,8 +502,11 @@ enum commit_msg_cleanup_mode get_cleanup_mode(const char *cleanup_arg,
 	else if (!strcmp(cleanup_arg, "scissors"))
 		return use_editor ? COMMIT_MSG_CLEANUP_SCISSORS :
 				    COMMIT_MSG_CLEANUP_SPACE;
-	else
-		die(_("Invalid cleanup mode %s"), cleanup_arg);
+	else {
+		warning(_("Invalid cleanup mode %s, falling back to default"), cleanup_arg);
+		return use_editor ? COMMIT_MSG_CLEANUP_ALL :
+				    COMMIT_MSG_CLEANUP_SPACE;
+	}
 }
 
 void append_conflicts_hint(struct strbuf *msgbuf, enum commit_msg_cleanup_mode cleanup_mode)
-- 
2.21.0.368.gbf248417d7