Allow multiple treesitter languages?

[flippette]

Currently, the view! macro in leptos makes helix highlighting very weird:

Is it possible to make treesitter use a different grammar inside the view! macro? Or in a more general sense?

[kirawi]

You could modify https://github.com/helix-editor/helix/blob/master/runtime/queries/rust/injections.scm locally to support HTML injections for the view macro, but the caveat is that it Leptos mixes it with Rust syntax so it wouldn't be correct anyway.

[erasin]

#9993 with tree-sitter-rshtml