range-diff: combine all options in a single data structure

This will make it easier to implement the `--left-only` and
`--right-only` options.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 10 insertions, 6 deletions

diff --git a/range-diff.h b/range-diff.h
index 583ced2e8e..0bae6b0cb1 100644
--- a/range-diff.h
+++ b/range-diff.h
@@ -6,14 +6,18 @@
 
 #define RANGE_DIFF_CREATION_FACTOR_DEFAULT 60
 
+struct range_diff_options {
+	int creation_factor;
+	unsigned dual_color:1;
+	const struct diff_options *diffopt; /* may be NULL */
+	const struct strvec *other_arg; /* may be NULL */
+};
+
 /*
- * Compare series of commits in RANGE1 and RANGE2, and emit to the
- * standard output.  NULL can be passed to DIFFOPT to use the built-in
- * default.
+ * Compare series of commits in `range1` and `range2`, and emit to the
+ * standard output.
  */
 int show_range_diff(const char *range1, const char *range2,
-		    int creation_factor, int dual_color,
-		    const struct diff_options *diffopt,
-		    const struct strvec *other_arg);
+		    struct range_diff_options *opts);
 
 #endif