Summary

Tree Sitter: Add tree-sitter-less.

Review Request #14527 — Created July 29, 2025 and updated March 31, 2026, 10:15 a.m.

Information

Owner

david

Repository

Review Board

Branch

master

Bugs

Depends On

Reviewers

Groups

reviewboard

People

Description

This change adds tree-sitter-less as an additional dependency, because
we selfishly want to have nice highlighting for LESS files. Most of this
change is infrastructure to add our own layer on top of
tree-sitter-language-pack, letting us extend the list of supported
languages and have our own fallbacks for getting language and parser
objects.

Testing Done


Ran unit tests.
Ran update-language-info and update-queries scripts to generate the

  new data.

Commits

Summary	ID
Tree Sitter: Add tree-sitter-less. This change adds tree-sitter-less as an additional dependency, because we selfishly want to have nice highlighting for LESS files. Most of this change is infrastructure to add our own layer on top of tree-sitter-language-pack, letting us extend the list of supported languages and have our own fallbacks for getting language and parser objects. Testing Done: - Ran unit tests. - Ran update-language-info and update-queries scripts to generate the new data.	73b06706d29849a4aa903d1e8b4985bd3d7564f2

Summary

Tree Sitter: Add tree-sitter-less.

This change adds tree-sitter-less as an additional dependency, because we selfishly want to have nice highlighting for LESS files. Most of this change is infrastructure to add our own layer on top of tree-sitter-language-pack, letting us extend the list of supported languages and have our own fallbacks for getting language and parser objects. Testing Done: - Ran unit tests. - Ran update-language-info and update-queries scripts to generate the new data.

73b06706d29849a4aa903d1e8b4985bd3d7564f2

Issues

Description	From	Last Updated
I feel like we should do this programmatically instead of hardcoding and having to remember to add a new if …	maubin	March 31, 2026, 12:10 p.m.
This should say parser instead of grammar.	maubin	March 31, 2026, 11:59 a.m.

flake8 passed.

JSHint passed.

reviewboard/treesitter/core.py (Diff revision 1)

The issue has been dropped. Show all issues

I feel like we should do this programmatically instead of hardcoding and having to remember to add a new if here anytime we have a new third party grammar. Maybe make THIRD_PARTY_GRAMMARS a dictionary with the python module for the language as the values and then loop through it here?

reviewboard/treesitter/core.py (Diff revision 1)
The issue has been resolved. Show all issues
```
This should say parser instead of grammar.
```