diff-parseopt: convert --color-words

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/diff.c b/diff.c
index 634981723b87551ef47560d5e67f7ade120d5d84..5180c2f5a96d977ea5250794e4201a252545201d 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -4901,6 +4901,18 @@ static int diff_opt_char(const struct option *opt,
        return 0;
 }
 
+static int diff_opt_color_words(const struct option *opt,
+                               const char *arg, int unset)
+{
+       struct diff_options *options = opt->value;
+
+       BUG_ON_OPT_NEG(unset);
+       options->use_color = 1;
+       options->word_diff = DIFF_WORDS_COLOR;
+       options->word_regex = arg;
+       return 0;
+}
+
 static int diff_opt_compact_summary(const struct option *opt,
                                    const char *arg, int unset)
 {
@@ -5272,6 +5284,9 @@ static void prep_parse_options(struct diff_options *options)
                OPT_CALLBACK_F(0, "word-diff-regex", options, N_("<regex>"),
                               N_("use <regex> to decide what a word is"),
                               PARSE_OPT_NONEG, diff_opt_word_diff_regex),
+               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_GROUP(N_("Diff other options")),
                OPT_CALLBACK_F(0, "relative", options, N_("<prefix>"),
@@ -5331,11 +5346,7 @@ int diff_opt_parse(struct diff_options *options,
                if (cm & COLOR_MOVED_WS_ERROR)
                        return -1;
                options->color_moved_ws_handling = cm;
-       } else if (skip_to_optional_arg_default(arg, "--color-words", &options->word_regex, NULL)) {
-               options->use_color = 1;
-               options->word_diff = DIFF_WORDS_COLOR;
-       }
-       else if (!strcmp(arg, "--exit-code"))
+       } else if (!strcmp(arg, "--exit-code"))
                options->flags.exit_with_status = 1;
        else if (!strcmp(arg, "--quiet"))
                options->flags.quick = 1;