diff: add an internal option to dual-color diffs of diffs

diff --git a/diff.h b/diff.h
index d88ceb3570fda33edc626aa3e2e738870af3346b..cca4f9d6c92cc79bf123dae8e80fa9a06a9584e6 100644 (file)
--- a/diff.h
+++ b/diff.h
@@ -95,6 +95,7 @@ struct diff_flags {
        unsigned default_follow_renames:1;
        unsigned stat_with_summary:1;
        unsigned suppress_diff_headers:1;
+       unsigned dual_color_diffed_diffs:1;
 };
 
 static inline void diff_flags_or(struct diff_flags *a,