diff-parseopt: convert -O

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 699f8605d0933fe127031bce33880526f131600c..849620aea53678bfb9ff6f807cb0683debcce5eb 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -4617,22 +4617,6 @@ static int opt_arg(const char *arg, int arg_short, const char *arg_long, int *va
        return 1;
 }
 
-static inline int short_opt(char opt, const char **argv,
-                           const char **optarg)
-{
-       const char *arg = argv[0];
-       if (arg[0] != '-' || arg[1] != opt)
-               return 0;
-       if (arg[2] != '\0') {
-               *optarg = arg + 2;
-               return 1;
-       }
-       if (!argv[1])
-               die("Option '%c' requires a value", opt);
-       *optarg = argv[1];
-       return 2;
-}
-
 int parse_long_opt(const char *opt, const char **argv,
                   const char **optarg)
 {
@@ -5397,6 +5381,8 @@ static void prep_parse_options(struct diff_options *options)
                OPT_BIT_F(0, "pickaxe-regex", &options->pickaxe_opts,
                          N_("treat <string> in -S as extended POSIX regular expression"),
                          DIFF_PICKAXE_REGEX, PARSE_OPT_NONEG),
+               OPT_FILENAME('O', NULL, &options->orderfile,
+                            N_("control the order in which files appear in the output")),
                { OPTION_CALLBACK, 0, "output", options, N_("<file>"),
                  N_("Output to a specific file"),
                  PARSE_OPT_NONEG, NULL, 0, diff_opt_output },
@@ -5449,10 +5435,7 @@ int diff_opt_parse(struct diff_options *options,
        }
 
        /* misc options */
-       else if ((argcount = short_opt('O', av, &optarg))) {
-               options->orderfile = prefix_filename(prefix, optarg);
-               return argcount;
-       } else if (skip_prefix(arg, "--find-object=", &arg))
+       else if (skip_prefix(arg, "--find-object=", &arg))
                return parse_objfind_opt(options, arg);
        else if ((argcount = parse_long_opt("diff-filter", av, &optarg))) {
                int offending = parse_diff_filter_opt(optarg, options);