Re: [Emacs-diffs] master 55ec674: * lisp/multifile.el: New file, extracted from etags.el

[Dmitry Gutov]

On 30.12.2018 1:02, Juri Linkov wrote:

> So a new command project-switch-to-file could complete on non-directory
> file name components from the project.  And on duplicate file names
> it could add a unique suffix '<sub/dir>' like is used to make buffer names
> unique.  Then completions will show project file names in alphabetical order.

You can already type 'sub/dir' and press TAB to see it completed. 
Especially if it's unique.

> project-occur could operate only on visited project files
> (but I doubt if this is useful).  project-rgrep is much more needed
> to operate like rgrep, but without asking for file names and root directory.

We already have project-find-regexp. Why bother?

> "hulahoop" :)

I don't mind.

> Actually I think the existing names are already good enough: "multifile"
> for the package that supports multifile operations,

It's not the only package that "supports multifile operations". xref 
does it as well (and arguably better), and also occur and grep, as some 
examples.

> and "project"
> for UI that operates on project files.

project is not a UI, it uses one of the other packages for UIs.