test_expect_success 'double dash "git checkout"' '
test_completion "git checkout --" <<-\EOF
--quiet Z
+ --detach Z
+ --track Z
+ --orphan=Z
--ours Z
--theirs Z
- --track Z
- --no-track Z
--merge Z
- --conflict=
- --orphan Z
+ --conflict=Z
--patch Z
- --detach Z
--ignore-skip-worktree-bits Z
+ --ignore-other-worktrees Z
--recurse-submodules Z
+ --progress Z
+ --no-track Z
--no-recurse-submodules Z
EOF
'