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Re: Brand new clojure support in Emacs ;-)

From: Bozhidar Batsov
Subject: Re: Brand new clojure support in Emacs ;-)
Date: Sun, 03 Sep 2023 17:04:32 +0200
User-agent: Cyrus-JMAP/3.9.0-alpha0-701-g9b2f44d3ee-fm-20230823.001-g9b2f44d3

I would guess that anyone who is seriously interested in working with
Clojure, would install the proper major mode and the proper package

That's one of the things that bother me the most in the conversations so far - lots of people tell us what the Clojure users need, but other than me and Danny, no one here has any real interest in Clojure. :-) Without an understanding of Clojure and its tooling ecosystem (and it's history) it's hard to make good suggestions about what makes sense and what doesn't.

I already wrote we tried the "thin layer on top of lisp-mode" and this didn't worked out great in the past. Of course, people are welcome to try and learn from experience themselves if they thing they can do things better/differently.

On Wed, Aug 30, 2023, at 9:17 AM, Philip Kaludercic wrote:
João Távora <joaotavora@gmail.com> writes:

> On Fri, Aug 25, 2023 at 8:26 AM Philip Kaludercic <philipk@posteo.net> wrote:
>> Richard Stallman <rms@gnu.org> writes:
>> > [[[ To any NSA and FBI agents reading my email: please consider    ]]]
>> > [[[ whether defending the US Constitution against all enemies,     ]]]
>> > [[[ foreign or domestic, requires you to follow Snowden's example. ]]]
>> >
>> > It appears that there is no clojure-mode command in core Emacs.
>> > There is a Clojure mode package, but it is in NonGNU ELPA.
>> >
>> > I think that language is important enough that, notwithstanding not
>> > really being similar to Lisp, we ought to have a major mode to support it.
>> > Would someone please work on that?
>> I had brought this up in the recent clojure-ts-mode thread, that I
>> assume you are referring to.  Sadly, I have no experience with the
>> language, but one idea might be to extend lisp-data-mode by whatever the
> I don't know if this counts as "work on that" but here's two interesting lines
> Elisp:
>   (define-derived-mode clojure-mode lisp-data-mode "Clojure"
> "Barebones Clojure")
>   (add-to-list 'auto-mode-alist '("\\.clj" . clojure-mode))

I suggested something along these lines up the thread, but didn't try it
out myself.  Nice to see that the idea works.  To avoid confusion, I
think it might be a good idea to not call this `clojure-mode' as well,
but something like "clojure-proto-mode" or "primitive-clojure-mode".

> Since it is a lisp dialect many things works here, like indentation,
> symbol recognition, parenthesis balancing, C-M navigation, and thing-at-point.
> And then there's LSP, right?
> So I installed clojure-lsp from here:
> I created a hello world project with the "lein" tool, git init, found the
> src/helloworld/core.clj inside it, pressed M-x eglot and suddenly I had
> at-point-documentation, diagnostics, lots of refactorings, completion, etc.
> The thing that's a bit minimal is the syntax highlighting, but it's
> not that bad either IMHO. Eglot doesn't yet support LSP-mandated syntax
> highlighting.  I have no idea what it takes to add TreeSitter support
> to such a bare-bones mode (but shouldn't it be really easy like mapping
> syntactic symbols to faces?)
> No idea if this works with the CIDER or SLIME backends for clojure.
> Don't ask me to test any more cause I've just uninstalled it all
> but any clojurians rading can have a go.

I would guess that anyone who is seriously interested in working with
Clojure, would install the proper major mode and the proper packages.

> João

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