diff --no-index: use parse_options() instead of diff_opt_parse()

While at there, move exit() back to the caller. It's easier to see the
flow that way than burying it in diff-no-index.c

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

1 files changed, 3 insertions, 18 deletions

diff --git a/builtin/diff.c b/builtin/diff.c
index f0393bba23..52dc3e136f 100644
--- a/builtin/diff.c
+++ b/builtin/diff.c
@@ -320,26 +320,11 @@ int cmd_diff(int argc, const char **argv, const char *prefix)
 
 	repo_init_revisions(the_repository, &rev, prefix);
 
-	if (no_index && argc != i + 2) {
-		if (no_index == DIFF_NO_INDEX_IMPLICIT) {
-			/*
-			 * There was no --no-index and there were not two
-			 * paths. It is possible that the user intended
-			 * to do an inside-repository operation.
-			 */
-			fprintf(stderr, "Not a git repository\n");
-			fprintf(stderr,
-				"To compare two paths outside a working tree:\n");
-		}
-		/* Give the usage message for non-repository usage and exit. */
-		usagef("git diff %s <path> <path>",
-		       no_index == DIFF_NO_INDEX_EXPLICIT ?
-		       "--no-index" : "[--no-index]");
-
-	}
 	if (no_index)
 		/* If this is a no-index diff, just run it and exit there. */
-		diff_no_index(the_repository, &rev, argc, argv);
+		exit(diff_no_index(the_repository, &rev,
+				   no_index == DIFF_NO_INDEX_IMPLICIT,
+				   argc, argv));
 
 	/* Otherwise, we are doing the usual "git" diff */
 	rev.diffopt.skip_stat_unmatch = !!diff_auto_refresh_index;