bug#42210: bug#41890: 28.0.50; [PATCH]: Add bindings for project.el

[Juri Linkov]

>> Okay, here's a prototype.  I had to rebase Philip's patch so I thought I
>> might as well attach my version of that too.
>
> The code LGTM, but I still wonder whether we do need the prompt in this
> case. The downsides are that we'll need to keep the list up-to-date, and 
> at some point (maybe) it will grow too big to fit in the prompt. Will we
> need a variable project-other-place-use-entire-map too?
>
> Juri, did you have this particular approach in mind, or something different?

Indeed, this approach.  I think it's a step forward.  Actually two steps 
forward.
Both patches improve this part of project functionality greatly.

Regarding project-other-place-use-entire-map, I don't know, first need
to try using new commands for some time to see what's missing.

Currently to open a new project in a new tab I have to type:
‘C-x t t C-x p p’ then a project dir and some key e.g. ‘v’.
When Sean will turn the prototype into the final patch,
then the key sequence will be much shorter:
‘C-x t p v’.