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Re: Making `eglot-server-programs' a custom variable?


From: Eli Zaretskii
Subject: Re: Making `eglot-server-programs' a custom variable?
Date: Wed, 16 Nov 2022 16:51:03 +0200

> From: Philip Kaludercic <philipk@posteo.net>
> Cc: jporterbugs@gmail.com,  arash@gnu.org,  emacs-devel@gnu.org,
>  joaotavora@gmail.com
> Date: Wed, 16 Nov 2022 14:12:39 +0000
> 
> >> >  . a multi-level list
> >> >  . elements that are alists
> >> >  . a "backquote construct" with evaluated parts in 
> >> >
> >> > How much Lisp do we require a user to know?  Imagine a user who just
> >> > wants to add one more server, either for an existing mode or for a new
> >> > mode not in the list.  Do we really expect him or her to understand
> >> > all that?
> >> 
> >> For a simple modification, it appears that 
> >> 
> >>   (add-to-list 'eglot-server-programs '(foo-mode "foo-lsp" "--stdio"))
> >> 
> >> is enough.
> >
> > And we expect a random user to know this how?
> 
> I believe it to be no more or less reasonable to know than how to
> manipulate `auto-mode-alist', and that involves Elisp regular
> expressions.

I think this variable is way harder to grasp that auto-mode-alist.

> > Probably.  Which is why I think my original proposal, not to ask users
> > to customize such variables directly, is much easier to implement.
> 
> I don't think that either or differs too much in difficulty, this is
> more a question of approach.

I think adding infrastructure to Custom widgets is much harder than
writing a :set function which adds an element to the likes of
eglot-server-programs.  But extensions of Custom in this direction
will be most welcome, of course.



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