untracked-cache: be defensive about missing NULs in index

diff --git a/t/t9902-completion.sh b/t/t9902-completion.sh
index 94157e58793b811cefc0751fa2daeac8d6036421..3a2c6326d83b760194c600e2ccde619438200508 100755 (executable)
--- a/t/t9902-completion.sh
+++ b/t/t9902-completion.sh
@@ -1434,7 +1434,8 @@ test_expect_success 'double dash "git checkout"' '
        --ignore-other-worktrees Z
        --recurse-submodules Z
        --progress Z
-       --no-quiet Z
+       --guess Z
+       --no-guess Z
        --no-... Z
        EOF
 '