>> >> +(define-minor-mode project-mode
>> >> +  "Toggle display of project menu in the project-aware buffers."
>> >> +  :lighter " Pro"
>> >> +  :keymap (define-keymap "<menu-bar>" project-mode-menu))
>> >
>> > If this mode is only for showing the menu, then at least the mode's
>> > name should reflect that.
>>
>> It can be used for anything.  For example, to display the project name
>> on the mode-line.  (Then better to cache the project name in a new
>> buffer-local variable.)
>
> I don't see anything but the menu in the patch you suggested.  I
> understand that in principle we could do many things there, but if you
> are proposing a real patch, not just an initial idea, please show all
> of the code you want to include in this mode.

Actually I miss this feature very much.  There is already the mode-line
indication with the VC system name and the VC branch name, but
no indication with a project name, so similar files
in different projects all are showing the same "Git-master".

Now here is the implementation of 'project-mode' based on 'vc-mode',
and 'project-menu-entry' based on 'vc-menu-entry' that shows
a project name alongside of vc info, and the mouse click opens
the project menu using 'menu-bar-project-menu' implemented by Spencer.