bug#58447: [PATCH] In project-find-file, add absolute file name to history

[Augusto Stoffel <arstoffel@gmail.com>]

On Thu, 27 Oct 2022 at 18:36, Dmitry Gutov wrote:

> On 27.10.2022 17:26, Augusto Stoffel wrote:
>> One thing to consider here is compatibility with savehist-mode and the
>> like.  I guess the only simple way to achieve this is with one global
>> variable per project.
>
> I suppose interning a symbol with the project root directory in its
> name could work.

The project root directory or the project name?  I'd say the latter.

If you have two copies of the same project in two different places
(which I often have -- a local copy and one in a remote compute
machine), then the shell and compilation buffers are shared.  One can
argue whether this is good or bad (I find it okay, with some caveats),
but for the sake of consistency the history variable should also be
shared among copies of the same project.

> Passing it to completing-read will unavoidably result in relative
> names still, though. But it won't be so much of a problem anymore.

If we settle for one history variable per project, then I'd say yes, the
entries should be relative file names.

>> And then there would be the issue of when to
>> garbage-collect the saved save pertaining to old projects.
>
> Inside project--remove-from-project-list? Either one specific project,
> or doing a full scan of obarray.

Okay, if "garbage collection" of projects is already a thing, then we
just have to extend it to contemplate the history variable.