feat(markdown): treat chartjs codeblocks as json

[ribru17]

There are several Chart.js Markdown previewing plugins, and they all (or all I have seen) take JSON data passed to a chart codeblock to generate the graphs. Since the chart info string isn't recognized in any way, it would be nice to alias it to JSON to get nice injections still.

[lucario387]

Can't you just vim.treesitter.language.register("json", {"chart"}) 🤔

[clason]

Yes, going forward, that's the way this should be handled. (But it's Neovim 0.10 only.)

This is a general decision on when we freeze master completely. I am mostly worried about changes that conflict with rebasing main, though, and this is a change to something I've already ripped out completely.

[ribru17]

Thank you both.

[clason]

I am mostly worried about changes that conflict with rebasing main, though, and this is a change to something I've already ripped out completely.

Which means it's not something I'd want to block necessarily, if the argument for a short-term fix is strong enough.

[ribru17]

I see. I will reopen this then, and if anyone has an argument against then they can shut it down.

[clason]

Just be aware that it'll be gone again in 1.0, so this is purely temporary. I think being forward-looking and using vim.treesitter.language.register is the better approach.