diff-parseopt: convert --anchored

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 8d08795f9c51925e7e3d23e2b668de74b4b78490..5195526db9631b8f8f37b52da0ce2e4ab5790001 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -4839,6 +4839,19 @@ static int parse_objfind_opt(struct diff_options *opt, const char *arg)
        return 1;
 }
 
+static int diff_opt_anchored(const struct option *opt,
+                            const char *arg, int unset)
+{
+       struct diff_options *options = opt->value;
+
+       BUG_ON_OPT_NEG(unset);
+       options->xdl_opts = DIFF_WITH_ALG(options, PATIENCE_DIFF);
+       ALLOC_GROW(options->anchors, options->anchors_nr + 1,
+                  options->anchors_alloc);
+       options->anchors[options->anchors_nr++] = xstrdup(arg);
+       return 0;
+}
+
 static int diff_opt_break_rewrites(const struct option *opt,
                                   const char *arg, int unset)
 {
@@ -5175,6 +5188,9 @@ static void prep_parse_options(struct diff_options *options)
                OPT_CALLBACK_F(0, "diff-algorithm", options, N_("<algorithm>"),
                               N_("choose a diff algorithm"),
                               PARSE_OPT_NONEG, diff_opt_diff_algorithm),
+               OPT_CALLBACK_F(0, "anchored", options, N_("<text>"),
+                              N_("generate diff using the \"anchored diff\" algorithm"),
+                              PARSE_OPT_NONEG, diff_opt_anchored),
 
                OPT_GROUP(N_("Diff other options")),
                OPT_CALLBACK_F(0, "relative", options, N_("<prefix>"),
@@ -5212,16 +5228,8 @@ int diff_opt_parse(struct diff_options *options,
        if (ac)
                return ac;
 
-       /* xdiff options */
-       if (skip_prefix(arg, "--anchored=", &arg)) {
-               options->xdl_opts = DIFF_WITH_ALG(options, PATIENCE_DIFF);
-               ALLOC_GROW(options->anchors, options->anchors_nr + 1,
-                          options->anchors_alloc);
-               options->anchors[options->anchors_nr++] = xstrdup(arg);
-       }
-
        /* flags options */
-       else if (!strcmp(arg, "--binary")) {
+       if (!strcmp(arg, "--binary")) {
                enable_patch_output(&options->output_format);
                options->flags.binary = 1;
        }