diff-parseopt: convert --ext-diff

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 bd152693463e575c0d94cd31091466bbf9aaa8a6..b460fa010ba8bf2c6bad01d233fd541e5ed4c0d0 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -5301,6 +5301,8 @@ static void prep_parse_options(struct diff_options *options)
                         N_("exit with 1 if there were differences, 0 otherwise")),
                OPT_BOOL(0, "quiet", &options->flags.quick,
                         N_("disable all output of the program")),
+               OPT_BOOL(0, "ext-diff", &options->flags.allow_external,
+                        N_("allow an external diff helper to be executed")),
                { OPTION_CALLBACK, 0, "output", options, N_("<file>"),
                  N_("Output to a specific file"),
                  PARSE_OPT_NONEG, NULL, 0, diff_opt_output },
@@ -5350,11 +5352,7 @@ int diff_opt_parse(struct diff_options *options,
                if (cm & COLOR_MOVED_WS_ERROR)
                        return -1;
                options->color_moved_ws_handling = cm;
-       } else if (!strcmp(arg, "--ext-diff"))
-               options->flags.allow_external = 1;
-       else if (!strcmp(arg, "--no-ext-diff"))
-               options->flags.allow_external = 0;
-       else if (!strcmp(arg, "--textconv")) {
+       } else if (!strcmp(arg, "--textconv")) {
                options->flags.allow_textconv = 1;
                options->flags.textconv_set_via_cmdline = 1;
        } else if (!strcmp(arg, "--no-textconv"))