REPL doesn't load if JuliaSyntax is used

[edmundmiller]

I'm guessing it has something to do with the use of CSTParser.jl.

I'm wondering if this will break in 1.10 then...

[gcv]

Can you give me some more information? A sample Project.toml file, some sample code?

Also, is CSTParser deprecated? I don't follow it closely; is the VSCode Julia plugin switching to the new Julia parser?

It's well within the realm of possibility that I update Snail to use this other parser for Julia >1.9.

[edmundmiller]

Sure thing! Sorry about that, it was a running around at JuliaCon issue 😆

Using Julia 1.9.1, add JuliaSyntax to the root/default environment.

Then in ~/.julia/config/startup.jl add:

using JuliaSyntax
JuliaSyntax.enable_in_core!()

Fire up a snail REPL, and it'll start and then disappear with no error message, and opening another starts a fresh instance with the same behavior.

[gcv]

I haven't yet had time to investigate too closely, especially the matter of 1.10 compatibility, but I did find this ticket: JuliaLang/JuliaSyntax.jl#128

Could you please try the atreplinit workaround described there and let me know if it helps?

[edmundmiller]

Awesome, it worked!

atreplinit() do repl
    @eval begin
        import JuliaSyntax
        JuliaSyntax.enable_in_core!(true)
    end
end

If you want to close it, go ahead, or we can add it to the docs in this repo as well, or maybe just in the wiki

[gcv]

Added to wiki (https://github.com/gcv/julia-snail/wiki/Tips-and-Tricks#enabling-juliasyntax-in-julia-110). I tried 1.10beta1 with Snail, and everything seems to work. Maybe the problem is the enable_in_core!, which probably isn't used in 1.10?

In any case, this raises questions about the future of CSTParser in Snail. Maybe when the next Julia LTS release comes out, I should replace CSTParser with JuliaSyntax and make the LTS version the minimum required for the latest versions of Snail. Or get rid of Julia-based parsing altogether in favor of the new tree-sitter parser included in Emacs 29. Though making 29 the minimum required Emacs version for Snail bother me. We'll see.