1 files changed, 2 insertions, 0 deletions
diff --git a/diff.h b/diff.h
index 40a6757dc8..a07ee9f367 100644
--- a/diff.h
+++ b/diff.h
@@ -29,6 +29,8 @@ extern void diff_unmerge(const char *path);
 extern int diff_scoreopt_parse(const char *opt);
 
 #define DIFF_SETUP_REVERSE      	1
+#define DIFF_SETUP_USE_CACHE		2
+#define DIFF_SETUP_USE_SIZE_CACHE	4
 extern void diff_setup(int flags);
 
 #define DIFF_DETECT_RENAME	1