diff-parseopt: convert --check

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

1 files changed, 4 insertions, 3 deletions

diff --git a/diff.c b/diff.c
index 1cdbe8e688..5e16082091 100644
--- a/diff.c
+++ b/diff.c
@@ -4939,6 +4939,9 @@ static void prep_parse_options(struct diff_options *options)
 			       N_("synonym for --dirstat=files,param1,param2..."),
 			       PARSE_OPT_NONEG | PARSE_OPT_OPTARG,
 			       diff_opt_dirstat),
+		OPT_BIT_F(0, "check", &options->output_format,
+			  N_("warn if changes introduce conflict markers or whitespace errors"),
+			  DIFF_FORMAT_CHECKDIFF, PARSE_OPT_NONEG),
 		OPT_END()
 	};
 
@@ -4967,9 +4970,7 @@ int diff_opt_parse(struct diff_options *options,
 		return ac;
 
 	/* Output format options */
-	if (!strcmp(arg, "--check"))
-		options->output_format |= DIFF_FORMAT_CHECKDIFF;
-	else if (!strcmp(arg, "--summary"))
+	if (!strcmp(arg, "--summary"))
 		options->output_format |= DIFF_FORMAT_SUMMARY;
 	else if (!strcmp(arg, "--patch-with-stat")) {
 		enable_patch_output(&options->output_format);