Re: Using incremental parsing in Emacs

[Dmitry Gutov]

On 03.01.2020 12:05, Eli Zaretskii wrote:
> Would someone like to try to figure out how we could use the
> incremental parsing technology in Emacs for making our
> programming-language support more accurate and efficient?  One package
> that implements this technology is tree-sitter:
>
>    https://tree-sitter.github.io/tree-sitter/
>
> AFAIU, these capabilities could be used as an alternative to
> regexp- and syntax-pps-based font-lock, better code folding,
> completion, refactoring, and other similar features; in general, any
> feature which would benefit from having a parse tree for the source
> code in a buffer.

Quite some time ago we talked with Stefan about supporting certain 
complex language features, and kind of agreed that we could use a new 
way to specify syntax, something to supersede syntax-propertize-function 
(and maybe font-lock).

Tree-Sitter could be an example of how such new grammars could be 
structured, but I think we'd need that implemented in Lisp. Not in a 
foreign library that we import through modules mechanism.