+static int diff_opt_color_moved(const struct option *opt,
+ const char *arg, int unset)
+{
+ struct diff_options *options = opt->value;
+
+ if (unset) {
+ options->color_moved = COLOR_MOVED_NO;
+ } else if (!arg) {
+ if (diff_color_moved_default)
+ options->color_moved = diff_color_moved_default;
+ if (options->color_moved == COLOR_MOVED_NO)
+ options->color_moved = COLOR_MOVED_DEFAULT;
+ } else {
+ int cm = parse_color_moved(arg);
+ if (cm < 0)
+ return error(_("bad --color-moved argument: %s"), arg);
+ options->color_moved = cm;
+ }
+ return 0;
+}
+
+static int diff_opt_color_moved_ws(const struct option *opt,
+ const char *arg, int unset)
+{
+ struct diff_options *options = opt->value;
+ unsigned cm;
+
+ if (unset) {
+ options->color_moved_ws_handling = 0;
+ return 0;
+ }
+
+ cm = parse_color_moved_ws(arg);
+ if (cm & COLOR_MOVED_WS_ERROR)
+ return error(_("invalid mode '%s' in --color-moved-ws"), arg);
+ options->color_moved_ws_handling = cm;
+ return 0;
+}
+