Re: [PATCH 20/24] update-index: test the system before enabling untracked cache

Nguyễn Thái Ngọc Duy  [off-list ref] writes:

Helped-by: Eric Sunshine [off-list ref]
Signed-off-by: Nguyễn Thái Ngọc Duy <redacted>
Signed-off-by: Junio C Hamano <redacted>
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It appears that this hijacks a fixed name dir-mtime-test at the root
level of every project managed by Git.  Is that intended?

Shouldn't --use-untracked-cache option require the working tree
(i.e. die in a bare repository)?