1 files changed, 16 insertions, 1 deletions
diff --git a/diff-lib.c b/diff-lib.c
index a41e1ec07c..a310fb2ad0 100644
--- a/diff-lib.c
+++ b/diff-lib.c
@@ -31,7 +31,7 @@ static int check_removed(const struct cache_entry *ce, struct stat *st)
 			return -1;
 		return 1;
 	}
-	if (has_symlink_leading_path(ce_namelen(ce), ce->name))
+	if (has_symlink_leading_path(ce->name, ce_namelen(ce)))
 		return 1;
 	if (S_ISDIR(st->st_mode)) {
 		unsigned char sub[20];
@@ -513,3 +513,18 @@ int do_diff_cache(const unsigned char *tree_sha1, struct diff_options *opt)
 		exit(128);
 	return 0;
 }
+
+int index_differs_from(const char *def, int diff_flags)
+{
+	struct rev_info rev;
+
+	init_revisions(&rev, NULL);
+	setup_revisions(0, NULL, &rev, def);
+	DIFF_OPT_SET(&rev.diffopt, QUIET);
+	DIFF_OPT_SET(&rev.diffopt, EXIT_WITH_STATUS);
+	rev.diffopt.flags |= diff_flags;
+	run_diff_index(&rev, 1);
+	if (rev.pending.alloc)
+		free(rev.pending.objects);
+	return (DIFF_OPT_TST(&rev.diffopt, HAS_CHANGES) != 0);
+}