test_cmp expect actual
'
+test_expect_success 'Tag name filtering allows slashes in tag names' '
+ git tag -m tag-with-slash X/1 &&
+ git cat-file tag X/1 | sed -e s,X/1,X/2, > expect &&
+ git filter-branch -f --tag-name-filter "echo X/2" &&
+ git cat-file tag X/2 > actual &&
+ test_cmp expect actual
+'
+
test_done