[PATCH 72/76] diff.c: convert --color-moved-ws

[Nguyễn Thái Ngọc Duy]

Signed-off-by: Nguyễn Thái Ngọc Duy <pclo...@gmail.com>
---
 diff.c | 35 ++++++++++++++++++-----------------
 1 file changed, 18 insertions(+), 17 deletions(-)

diff --git a/diff.c b/diff.c
index 5403351466..e79a72cde9 100644
--- a/diff.c
+++ b/diff.c
@@ -4926,6 +4926,20 @@ static int diff_opt_color_moved(const struct option *opt,
        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;
+
+       BUG_ON_OPT_NEG(unset);
+       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;
+}
+
 static int diff_opt_color_words(const struct option *opt,
                                const char *arg, int unset)
 {
@@ -5427,6 +5441,9 @@ static void prep_parse_options(struct diff_options 
*options)
                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_CALLBACK_F(0, "color-moved-ws", options, N_("<mode>"),
+                              N_("how white spaces are ignored in 
--color-moved"),
+                              PARSE_OPT_NONEG, diff_opt_color_moved_ws),
 
                OPT_GROUP(N_("Diff other options")),
                OPT_CALLBACK_F(0, "relative", options, N_("<prefix>"),
@@ -5494,8 +5511,6 @@ static void prep_parse_options(struct diff_options 
*options)
 int diff_opt_parse(struct diff_options *options,
                   const char **av, int ac, const char *prefix)
 {
-       const char *arg = av[0];
-
        if (!prefix)
                prefix = "";
 
@@ -5506,21 +5521,7 @@ int diff_opt_parse(struct diff_options *options,
                           PARSE_OPT_ONE_SHOT |
                           PARSE_OPT_STOP_AT_NON_OPTION);
 
-       if (ac)
-               return ac;
-
-       /* flags options */
-       if (skip_prefix(arg, "--color-moved-ws=", &arg)) {
-               unsigned cm = parse_color_moved_ws(arg);
-               if (cm & COLOR_MOVED_WS_ERROR)
-                       return -1;
-               options->color_moved_ws_handling = cm;
-       }
-
-       /* misc options */
-       else
-               return 0;
-       return 1;
+       return ac;
 }
 
 int parse_rename_score(const char **cp_p)
-- 
2.20.0.482.g66447595a7