Add initial support for janet-lang

[pnelson]

Resolves #4617 #4574

[the-mikedavis]

This key can be omitted since #8803

[mikkelfj]

Great to see this, but as far as I can tell, clojure-lsp listed in the PR requires openjdk installed on macos, which completely defeats the point of using janet in the first place.

[the-mikedavis]

This PR doesn't configure a language server, it's just re-using the highlighting from clojure. If there's a language server for janet, that could be added in a follow-up PR

[mikkelfj]

Yes, I just realized. Sorry for the noise.

[sogaiu]

FWIW, I have a branch based on a helix from 2023-10 or so that uses tree-sitter-janet-simple. The branch also includes a highlighting query file that works with the grammar.

I was waiting for lsp support to improve, but perhaps that can be added later?

Please let me know if there is any interest.

[pnelson]

Please let me know if there is any interest.

Absolutely! 🚀

[sogaiu]

Ok, I've created a new branch that's based on 7e389b6.

Before I make a PR, I have a few questions:

• I'd chosen janet-simple for name before [1] and I see that this PR used janet. My choice was influenced by the grammar name. Is this ok or should it be changed to use janet?
• I see Add initial support for janet-lang #9081 has something for injection-regex -- is this seen as important?

Hmm...perhaps better to make a PR and ask there?

Update: made #9247.

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[1] There is more than one tree-sitter grammar for Janet -- though the other one I know of is not in use in Emacs or Neovim or elsewhere -- it took a different approach and possibly some folks might want to use it for certain situations. They were started around the same time but I changed the name of mine to avoid name collisions.

[rokf]

I've tried https://github.com/CFiggers/janet-lsp today and it's working. I've tested this on macOS with Janet installed through brew. It doesn't have many features yet though, but it could be a start 🙂

First I had to make sure that the location where binaries that are installed through jpm are placed was in my path, i.e.:

export PATH=/opt/homebrew/Cellar/janet/HEAD-2f0c789/bin:$PATH

I've (somewhat) followed the installation instructions from the README:

git clone https://github.com/CFiggers/janet-lsp
cd janet-lsp
jpm -l deps
jpm install

This is what I've put into languages.toml in my ~/.config/helix folder:

[language-server.janet-lsp]
command = "janet-lsp"

[[language]]
name= "janet"
language-servers = [ { name = "janet-lsp" } ]