feat: add nu support

[jgollenz]

In case you never heard of it: Nushell

[jgollenz]

@numToStr do you have any criteria for adding languages to this plugin? I see some missing from the list, but you might consider them not popular enough.

[numToStr]

do you have any criteria for adding languages to this plugin?

I generally look for if vim has native syntax highlighting, a famous community plugin for highlights, or a tree-sitter parser. If the filetype has any of those then it's good to go.

I know about nushell though, but being a new shell I don't know if there is any highlighting support as of now.

[jgollenz]

Thanks for clarifying 👍
As far as nushell is concerned, I wouldn't say famous, but a plugin (plus grammar) exists.

[numToStr]

(plus grammar)

That's good to know. Can it be installed via TSInstall? Or does it require some config?

[jgollenz]

Unfortunately it is not yet part of the grammars available through the nvim-treesitter repo. However, the nvim-nu plugin takes care of that in the background. Once the plugin is installed, TSInstall nu will download and setup the nu grammar.

edit:

does it require some config

so yes, additional config (installing the plugin + calling TSInstall nu afterwards) is required.

[numToStr]

Understood. And looking at the parser repo, i believe it's broken for newer nushell version. Well I hope someday it'd get fixed and upstreamed to nvim-treesitter :)

[jgollenz]

it's broken for newer nushell version

Unfortunately, yes :( I understand if you want to wait with this PR until it is up-to-date.

edit: but to be fair, it appears to be "mostly" working for me, even on newer nushell versions