1 files changed, 1 insertions, 0 deletions
diff --git a/diff.h b/diff.h
index a268d16ff7..0cebec113f 100644
--- a/diff.h
+++ b/diff.h
@@ -102,6 +102,7 @@ extern int diff_setup_done(struct diff_options *);
 #define DIFF_DETECT_COPY	2
 
 #define DIFF_PICKAXE_ALL	1
+#define DIFF_PICKAXE_REGEX	2
 
 extern void diffcore_std(struct diff_options *);