Merge branch 'jk/for-each-ref-icase'

The "--ignore-case" option of "git for-each-ref" (and its friends)
did not work correctly, which has been fixed.

* jk/for-each-ref-icase:
  ref-filter: avoid backend filtering with --ignore-case
  for-each-ref: consistently pass WM_IGNORECASE flag
  t6300: add a test for --ignore-case

ref-filter.c

@@ -1814,7 +1814,7 @@ static int match_name_as_path(const struct ref_filter *filter, const char *refna
 		     refname[plen] == '/' ||
 		     p[plen-1] == '/'))
 			return 1;
-		if (!wildmatch(p, refname, WM_PATHNAME))
+		if (!wildmatch(p, refname, flags))
 			return 1;
 	}
 	return 0;
@@ -1869,6 +1869,15 @@ static int for_each_fullref_in_pattern(struct ref_filter *filter,
 		return for_each_fullref_in("", cb, cb_data, broken);
 	}
 
+	if (filter->ignore_case) {
+		/*
+		 * we can't handle case-insensitive comparisons,
+		 * so just return everything and let the caller
+		 * sort it out.
+		 */
+		return for_each_fullref_in("", cb, cb_data, broken);
+	}
+
 	if (!filter->name_patterns[0]) {
 		/* no patterns; we have to look at everything */
 		return for_each_fullref_in("", cb, cb_data, broken);

t/t6300-for-each-ref.sh

@@ -795,4 +795,15 @@ test_expect_success ':remotename and :remoteref' '
 	)
 '
 
+test_expect_success 'for-each-ref --ignore-case ignores case' '
+	>expect &&
+	git for-each-ref --format="%(refname)" refs/heads/MASTER >actual &&
+	test_cmp expect actual &&
+
+	echo refs/heads/master >expect &&
+	git for-each-ref --format="%(refname)" --ignore-case \
+		refs/heads/MASTER >actual &&
+	test_cmp expect actual
+'
+
 test_done