builtin/show-ref: treat directory as non-existing in --exists
9080a7f178 (builtin/show-ref: add new mode to check for reference
existence, 2023-10-31) added the option --exists to git-show-ref(1).
When you use this option against a ref that doesn't exist, but it is
a parent directory of an existing ref, you get the following error:
$ git show-ref --exists refs/heads
error: failed to look up reference: Is a directory
when the ref-files backend is in use. To be more clear to user,
hide the error about having found a directory. What matters to the
user is that the named ref does not exist. Instead, print the same
error as when the ref was not found:
error: reference does not exist
Signed-off-by: Toon Claes <toon@iotcl.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/builtin/show-ref.c b/builtin/show-ref.c
index 7aac525..6025ce2 100644
--- a/builtin/show-ref.c
+++ b/builtin/show-ref.c
@@ -239,7 +239,7 @@ static int cmd_show_ref__exists(const char **refs)
if (refs_read_raw_ref(get_main_ref_store(the_repository), ref,
&unused_oid, &unused_referent, &unused_type,
&failure_errno)) {
- if (failure_errno == ENOENT) {
+ if (failure_errno == ENOENT || failure_errno == EISDIR) {
error(_("reference does not exist"));
ret = 2;
} else {
