Support multiple tree-sitter grammars

Support multiple tree-sitter grammars

[Damien Cassou]

Hi,

some files may consist of several parts requiring different tree-sitter
grammars. For example, a JavaScript file may have its documentation
written with jsdoc: JavaScript and jsdoc have a tree-sitter grammar
each.

Is there a way to use a tree-sitter grammar in parts of the file and
another one in other parts? There could be a main grammar and secondary
grammars would be activated on some kinds of nodes of the main one.

Best

-- 
Damien Cassou

"Success is the ability to go from one failure to another without
losing enthusiasm." --Winston Churchill

Re: Support multiple tree-sitter grammars

[Eli Zaretskii]

> From: Damien Cassou <damien@cassou.me>
> Date: Sun, 07 May 2023 12:46:51 +0200
> 
> Hi,
> 
> some files may consist of several parts requiring different tree-sitter
> grammars. For example, a JavaScript file may have its documentation
> written with jsdoc: JavaScript and jsdoc have a tree-sitter grammar
> each.
> 
> Is there a way to use a tree-sitter grammar in parts of the file and
> another one in other parts? There could be a main grammar and secondary
> grammars would be activated on some kinds of nodes of the main one.

Yes, it should be possible, AFAIU.  See the node "Multiple Languages"
in the ELisp manual, I believe it explains how to do what you want.