Force writing ref if it doesn't exist.

Normally we try to skip writing a ref if its value hasn't changed
but in the special case that the ref doesn't exist but the new
value is going to be 0{40} then force writing the ref anyway.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/refs.h b/refs.h
index 2c854de3f..6c946eabc 100644
--- a/refs.h
+++ b/refs.h
@@ -7,6 +7,7 @@ struct ref_lock {
 	char *log_file;
 	unsigned char old_sha1[20];
 	int lock_fd;
+	int force_write;
 };
 
 /*