Re: [PATCH v2 2/2] completion: add a GIT_COMPLETION_SHOW_ALL_COMMANDS

> Superficial testing shows that it appears to work in common cases, but
> we'll have to think it through when and how to clear these variables.
> E.g.:
>
>   $ git d<TAB><TAB>
>   describe   diff   difftool
>   # Oh, but I wanted to disable the pager
>   $ git --no-p<TAB>
>   # this completes the option uniquely
>   $ git --no-pager d<TAB><TAB>
>   daemon     diff         diff-index   diff-tree
>   describe   diff-files   difftool
>
> I think here it should list only porcelains, but because both those
> last_cur variables still contain 'd', it lists plumbing as well.