t3432: test for --no-ff's interaction with fast-forward

diff --git a/range-diff.h b/range-diff.h
index 190593f0c78151c99cc6e87161137b99c2615c80..08a50b6e98fc768f42e48b33c70ffbf17a7e8e4c 100644 (file)
--- a/range-diff.h
+++ b/range-diff.h
@@ -5,6 +5,11 @@
 
 #define RANGE_DIFF_CREATION_FACTOR_DEFAULT 60
 
+/*
+ * Compare series of commmits in RANGE1 and RANGE2, and emit to the
+ * standard output.  NULL can be passed to DIFFOPT to use the built-in
+ * default.
+ */
 int show_range_diff(const char *range1, const char *range2,
                    int creation_factor, int dual_color,
                    struct diff_options *diffopt);