bug#41572: 28.0.50; [PATCH] Support plain project marked with file .emacs-project

[Dmitry Gutov]

On 06.06.2020 11:48, Theodor Thornhill wrote:
> Thanks - Wasn't aware of this. Seems like a better solution over all is to enforce the vc-backend? 
> It seems like we get the "transient" version, or the "vc" version, but defining 
> your own will have several drawbacks?

Unless you make sure it's full-featured, indeed. But the problem might 
become more severe in the future if we add more capabilities to projects.

This particular problem with speed could be alleviated if we export a 
utility function similar to project--vc-list-files, so that other impls 
could use Git's file listing speed.

The primary drawback is the semantics: the current impl always follows 
.gitignore for its ignores (but accepts additional ones), whereas an 
arbitrary project can have a totally different set of ignores. So, at 
the very least, I'm in doubt how to write the docstring.