git-commit --amend: allow empty commit.

diff --git a/revision.h b/revision.h
index 0043c1694cbc86e78477f038ef6018e71b96983f..31e8f615677634a92992df8404c86a8c2184ff2a 100644 (file)
--- a/revision.h
+++ b/revision.h
@@ -5,6 +5,7 @@
 #define UNINTERESTING   (1u<<1)
 #define TREECHANGE     (1u<<2)
 #define SHOWN          (1u<<3)
+#define TMP_MARK       (1u<<4) /* for isolated cases; clean after use */
 
 struct rev_info {
        /* Starting list */