refs: add REF_FORCE_CREATE_REFLOG flag

Add a flag to allow forcing the creation of a reflog even if the ref
name and core.logAllRefUpdates setting would not ordinarily cause ref
creation.

In a moment, we will use this to add options to git tag and git
update-ref to force reflog creation.

Signed-off-by: David Turner <dturner@twopensource.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/refs.h b/refs.h
index de68a45..4f1b236 100644
--- a/refs.h
+++ b/refs.h
@@ -187,6 +187,7 @@ extern int peel_ref(const char *refname, unsigned char *sha1);
  * Other flags are reserved for internal use.
  */
 #define REF_NODEREF	0x01
+#define REF_FORCE_CREATE_REFLOG 0x40
 
 /*
  * Setup reflog before using. Fill in err and return -1 on failure.