bug#43464: 28.0.50; vc: Error calling vc-revert for repo root

[Lars Ingebrigtsen]

Dmitry Gutov <dgutov@yandex.ru> writes:

> On 17.09.2020 10:29, Andrii Kolomoiets wrote:
>> Debugger entered--Lisp error: (file-missing "Cannot open load file"
>> "No such file or directory" "vc-nil")
>>    require(vc-nil)
>>    vc-find-backend-function(nil make-version-backups-p)
>>    vc-call-backend(nil make-version-backups-p "/private/tmp/gittest/")
>>    vc-version-backup-file("/private/tmp/gittest/")
>>    vc-revert-file("/private/tmp/gittest/")
>>    vc-revert()
>>    funcall-interactively(vc-revert)
>>    call-interactively(vc-revert nil nil)
>>    command-execute(vc-revert)
>> At least for `hg` and `git` backends.  Maybe because `vc-registered`
>> for
>> repo root is nil.
>
> I don't think we support vc-revrt on directories, repo root or not.

Ah,  we basically get this error message whenever we type `C-x v u' in a
vc-dir buffer when not on a file (or there are no marked files)?

That seems like a suboptimal error message in this case, though.

-- 
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   bloggy blog: http://lars.ingebrigtsen.no