checkout-index: simplify "-z" option parsing

Now that we act as a simple bool, there's no need to use a
custom callback.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/checkout-index.c b/builtin/checkout-index.c
index d8d7bd385408a344a6ed4d07132864577b4c7d99..3b913d1b3710f012117f5520755fdbc89c54c82f 100644 (file)
--- a/builtin/checkout-index.c
+++ b/builtin/checkout-index.c
@@ -142,13 +142,6 @@ static int option_parse_u(const struct option *opt,
        return 0;
 }
 
-static int option_parse_z(const struct option *opt,
-                         const char *arg, int unset)
-{
-       nul_term_line = !unset;
-       return 0;
-}
-
 static int option_parse_prefix(const struct option *opt,
                               const char *arg, int unset)
 {
@@ -192,9 +185,8 @@ int cmd_checkout_index(int argc, const char **argv, const char *prefix)
                { OPTION_CALLBACK, 'u', "index", &newfd, NULL,
                        N_("update stat information in the index file"),
                        PARSE_OPT_NOARG, option_parse_u },
-               { OPTION_CALLBACK, 'z', NULL, NULL, NULL,
-                       N_("paths are separated with NUL character"),
-                       PARSE_OPT_NOARG, option_parse_z },
+               OPT_BOOL('z', NULL, &nul_term_line,
+                       N_("paths are separated with NUL character")),
                OPT_BOOL(0, "stdin", &read_from_stdin,
                        N_("read list of paths from the standard input")),
                OPT_BOOL(0, "temp", &to_tempfile,