> high-accuracy syntax highlighter (called Tree-sitter)

Just wanted to note that tree-sitter is lower-level and more general: it's an incremental parser that is specialised for gracefully and efficiently parsing partially-correct code snippets or code being edited live.

It's an important building block of the highlighter, but it needs more on top to complete the package. It can be used for anything that requires awareness of code structure in an editor.

If only it were usable for really-correct parsing. In my experience error recovery is so aggressive it will accept broken ASTs without marking any node as an error. Plus, you can't really solve some ambiguities without C-based lexer hacks.

I wonder if targeting the Tree-sitter ABI directly could be a viable way to write more accurate parsers in an actual programming language while piggybacking on the ecosystem. Could tree-sitter's runtime ABI be adapted for GLL parsers instead of GLR? I haven't looked deep into it yet.

Thanks for the correction!