Tree sitter integration

[aciceri]

Hey, after having tried Helix I realized that perhaps Vim/Evil is not the best modal editing we can get, then I found meow (days ago, so I'm still a noob) and it looks great! I liked Helix, it has really good defaults, but it doesn't give you the degree of customization of Emacs.

I'm not an Emacs (lisp) expert and also my Tree sitter knowledge is limited to what I've read in their doc (and for some languages I use syntax highlighting provided by it) so please take my proposal with a grain of salt. Would it be possible to register some tree sitter "nodes" (not sure how to call them, by the way whatever queries return) as Meow things?

If you believe this is possible, would it be easy? And especially, would it make sense or would it be better if this was managed in another package and/or Emacs mode?

[DogLooksGood]

It's easy to support, query the node from tree-sitter is easy. But meow can't integrate it as the default, since meow is designed to be dependency-free. Maybe we can do it in a separated package.

[quarkw]

I think this comment is relevant
https://old.reddit.com/r/emacs/comments/10ufbx4/a_consistent_structural_editing_interface/j7bxx1y/?context=3
I think the idea is there could be a separate package that functions as an interface between the treesitter API and the native emacs things API. Then in meow, you could just add support for the things implemented by treesitter, which I think would be really easy.

[thiskappaisgrey]

what I have so far (link to the repo)

this is what I have so far. I also tried to add support for meow-ts--next-defun to make it kind of work like meow-next-word.
I plan to add more tree-sitter objects if I have time, but so far, meow is pretty expandable to things defined by external packages (except for the fact that meow--select-expandable-p is hardcoded, but that's an easy fix).

[DogLooksGood]

Well, thing selections are not expandable by design.

[thiskappaisgrey]

Is there a reason why they shouldn't be? It would make it easier for other libraries to extend meow's thing s and have them work like they do with words and such (not just tree-sitter objects but maybe also other text objects as well, like org-mode objects as well or something like that), without having to modify meow.

[DogLooksGood]

Well, those things you usually select and expand are all directly supported. Except paragraphs and sentences. With current implementation, you can't do expand on thing selection.

[DogLooksGood]

It's easy to support, query the node from tree-sitter is easy. But meow can't integrate it as the default, since meow is designed to be dependency-free. Maybe we can do it in a separated package.

[skissue]

Hey everyone, this discussion is pretty old, but I was looking for this functionality recently, so I decided to write a package myself. You can find it here. It's still pretty rough around the edges, but I've been using it for a bit and it's working, so I'd love some more feedback 🙂. A lot of the functionality is ported from evil-textobj-tree-sitter.

[aciceri]

Just tried it out (with the Python and Nix grammars) and it seems to work great 💪
I couldn't wait for this! Will give you feedback once I've it.

[eshrh]

Cool! I'll be using this.