1 files changed, 5 insertions, 0 deletions
diff --git a/diff.h b/diff.h
index f6fdf49e14..57762ee8b1 100644
--- a/diff.h
+++ b/diff.h
@@ -138,6 +138,11 @@ struct diff_options {
 	int dirstat_permille;
 	int setup;
 	int abbrev;
+/* white-space error highlighting */
+#define WSEH_NEW 1
+#define WSEH_CONTEXT 2
+#define WSEH_OLD 4
+	unsigned ws_error_highlight;
 	const char *prefix;
 	int prefix_length;
 	const char *stat_sep;