bug#12492: Acknowledgement (24.2.50; Open vc-dir buffer easier and faster)

[Juri Linkov]

>>> Also it makes more sense to introduce a root prefix map for the whole set
>>> of project related commands (not necessarily restricted to VCS):
>>>
>>> C-x / d - project dir
>>> C-x / f - project find file
>>> C-x / r - project find regexp
>>> C-x / t - project tag search
>>> C-x / s - project search/grep
>>> C-x / % - project query-replace
>>> C-x / l - project log
>>> C-x / = - project diff
>>
>> I like it.  How would one define "project root" outside of a VCS, though?
>
> 'project root' is defined in project.el.
>
> I don't know how we would define 'project log' or 'project diff', though.

When a project is not under VCS then 'project log' could rely on
ChangeLog files, and 'project diff' to use backup files.