Re: Add cl-defgeneric project-name; first use case eglot

[Eli Zaretskii]

> From: Stephen Leake <stephen_leake@stephe-leake.org>
> Cc: João Távora <joaotavora@gmail.com>
> Date: Sun, 20 Nov 2022 14:09:49 -0800
> 
> eglot builds a name for a server using the root directory of the
> project - in effect:
> 
> (file-name-base (directory-file-name (project-root (project-current))))
> 
> That name shows up in the elgot mode line, to tell the user which server
> the buffer is connected to, in progress report messages, and in the name
> of the EGLOT log buffer, which is useful for debugging things.
> 
> If the project root directory happens to have a meaningful name, that's
> fine. In my use cases, it's usually not meaningful.

So Eglot should allow customization of what is shown on the mode line.

> So I'd like to add a new cl-defgeneric to project.el:
> 
> (cl-defgeneric project-name (project)
>   "A human-readable name for the project."
>   (file-name-base (directory-file-name (project-root project))))
> 
> Then I can override that in my projects, and eglot will use my desired
> name.

I don't see why the needs of Eglot usage justify another generic in
project.el, or should be solved in project.el to begin with.  If Dmitry
wants to add such a generic for his own reasons, with some future
development of project.el in mind, I won't object, of course.  Otherwise, it
sounds like the wrong way of solving specific problems: by generalizing the
heck out of them.  E.g., tomorrow we decide that Eglot shouldn't use the
project name on the mode line, and puff! your solution evaporates.