bug#66993: [PATCH] project.el: avoid asking user about project-list-file lock

[Eli Zaretskii]

> Date: Thu, 9 Nov 2023 13:05:09 +0200
> Cc: sbaugh@janestreet.com, 66993@debbugs.gnu.org
> From: Dmitry Gutov <dmitry@gutov.dev>
> 
> > Can you tell why the list of projects is saved on a file that is
> > global among all sessions of the same user?  Would it make sense to
> > make the file specific to an Emacs process?
> 
> Specific, meaning in a file name e.g. suffixed with pid?

For example, yes.

> And what happens after the restart? The list needs to be recovered.

Why does it need to be recovered?  Isn't it built on-the-fly anyway?
Is this just some kind of optimization?

I guess I don't understand well enough why this file exists and how it
is used?