convert: treat an empty string for clean/smudge filters as "cat"

diff --git a/t/t5700-clone-reference.sh b/t/t5700-clone-reference.sh
index 2250ef4fe245bda17328d46844a4caf49fbde8d9..dfa1bf79c5690289baeddd4498cb4c84dbd19bbe 100755 (executable)
--- a/t/t5700-clone-reference.sh
+++ b/t/t5700-clone-reference.sh
@@ -210,4 +210,15 @@ test_expect_success 'clone, dissociate from partial reference and repack' '
        test_line_count = 1 packs.txt
 '
 
+test_expect_success 'clone, dissociate from alternates' '
+       rm -fr A B C &&
+       test_create_repo A &&
+       commit_in A file1 &&
+       git clone --reference=A A B &&
+       test_line_count = 1 B/.git/objects/info/alternates &&
+       git clone --local --dissociate B C &&
+       ! test -f C/.git/objects/info/alternates &&
+       ( cd C && git fsck )
+'
+
 test_done