Re: [PATCH] treesit.el: New function to describe font-lock rules

[Yuan Fu]

Hi Huan,

> On Oct 3, 2023, at 6:32 AM, Huan Thieu Nguyen <nguyenthieuhuan@gmail.com> 
> wrote:
> 
> Hello emacs maintainers,
> 
> I think most major modes don't need to use multiple tree-sitter grammars, so 
> I made a function called `treesit-font-lock-simple-rules' which saves the 
> user from typing `:language` for every query-spec.
> 
> I have not added an announcement in the news file yet.


Sorry for the late response. I agree it’s somewhat tedious. I didn’t came up 
with a clean solution for it at the time and left it be.

Instead of finding :feature keywords and appending :language keywords after 
them, maybe we could introduce a secret keyword (say, :default-language or 
:global-language) to treesit-font-lock-rules, and make 
treesit-font-lock-simple-rules use that.

We could also just add the :default-language or :global-language keyword to 
treesit-font-lock-rules. If we do that, we can also add :default-override, too. 
But adding global keywords doesn’t look super clean to me (and it might be a 
bit confusing), that’s why I didn’t implement it in the first place.

Yuan