Re: [PATCH v5 0/2] mv: report missing destination leading directory

> Changes in v5:
>
>  * extracted the shared "will this move rename on disk?" condition into a
>    needs_worktree_rename() helper used by both the new leading-directory
>    check and the actual rename(), so the two cannot drift, per Junio C
>    Hamano
>  * allocate the dirname copy only when the destination has a slash
>  * reworded the opening of the commit message for clarity, per Junio C
>    Hamano
>  * added tests: moving into an existing directory (destination is normalized
>    to a full path), and moving to a bare filename in the cwd (no leading
>    directory to check)