`git tag --points-at` can simply return if the given rev does not have
any tags pointing to it. It's not a failure but it shouldn't return
with 0 value.
---
builtin/tag.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/builtin/tag.c b/builtin/tag.c
index b38329b59..68b84db2a 100644
--- a/builtin/tag.c
+++ b/builtin/tag.c
@@ -58,6 +58,10 @@ static int list_tags(struct ref_filter *filter, struct ref_sorting *sorting,
die(_("unable to parse format string"));
filter->with_commit_tag_algo = 1;
filter_refs(&array, filter, FILTER_REFS_TAGS);
+
+ if (array.nr == 0)
+ return -1;
+
ref_array_sort(sorting, &array);
for (i = 0; i < array.nr; i++)
--
2.11.0
