[PATCH 71/76] diff.c: convert --color-moved

[Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>]

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
 diff.c | 38 +++++++++++++++++++++++++-------------
 1 file changed, 25 insertions(+), 13 deletions(-)

diff --git a/diff.c b/diff.c
index cc10b27df0..5403351466 100644
--- a/diff.c
+++ b/diff.c
@@ -4905,6 +4905,27 @@ static int diff_opt_char(const struct option *opt,
 	return 0;
 }
 
+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_words(const struct option *opt,
 				const char *arg, int unset)
 {
@@ -5403,6 +5424,9 @@ static void prep_parse_options(struct diff_options *options)
 		OPT_CALLBACK_F(0, "color-words", options, N_("<regex>"),
 			       N_("equivalent to --word-diff=color --word-diff-regex=<regex>"),
 			       PARSE_OPT_NONEG | PARSE_OPT_OPTARG, diff_opt_color_words),
+		OPT_CALLBACK_F(0, "color-moved", options, N_("<mode>"),
+			       N_("move lines of code are colored differently"),
+			       PARSE_OPT_OPTARG, diff_opt_color_moved),
 
 		OPT_GROUP(N_("Diff other options")),
 		OPT_CALLBACK_F(0, "relative", options, N_("<prefix>"),
@@ -5486,19 +5510,7 @@ int diff_opt_parse(struct diff_options *options,
 		return ac;
 
 	/* flags options */
-	if (!strcmp(arg, "--color-moved")) {
-		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 if (!strcmp(arg, "--no-color-moved"))
-		options->color_moved = COLOR_MOVED_NO;
-	else if (skip_prefix(arg, "--color-moved=", &arg)) {
-		int cm = parse_color_moved(arg);
-		if (cm < 0)
-			return error("bad --color-moved argument: %s", arg);
-		options->color_moved = cm;
-	} else if (skip_prefix(arg, "--color-moved-ws=", &arg)) {
+	if (skip_prefix(arg, "--color-moved-ws=", &arg)) {
 		unsigned cm = parse_color_moved_ws(arg);
 		if (cm & COLOR_MOVED_WS_ERROR)
 			return -1;
-- 
2.20.0.482.g66447595a7