Textual CSS Tree-sitter grammar/parser

[b4shful]

I've seen there is a Textual CSS VSCode Extension based on the TCSS TextMate Grammar.

It would be great if a Tree-sitter grammar was also made available. I am unfamiliar with this so I'm not sure how difficult it would be to create a Tree-sitter grammar from the existing TextMate grammar. It probably wouldn't be as easy as a simple conversion as Tree-sitter creates a full syntax tree, but the documentation is apparently very good.

What I do know is that having a Tree-sitter parser would enable a wide range of editor support, for example getting TCSS in the nvim-treesitter project would allow for syntax highlighting, incremental selection, indentation and folding without having to develop a specific plugin for Neovim (and even then, a lot might be able to be derived from the preexisting CSS and/or SCSS parsers. It also wouldn't require any working with LSP etc. but you still get some of the functionality expected from LSPs.

Tree-sitter is becoming quite popular too, apparently used by Atom (RIP), Emacs, Neovim, Lapce, Zed and Helix. So, while personally I'm interested in Neovim support/integrations, Tree-sitter support benefits a lot of different editors :)

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[darrenburns]

This would be cool. Textual's TextArea widget itself uses tree-sitter too for syntax highlighting :)