How to get this grammar working? Grammar doesn't seem to work, but no errors

[bbarker]

I've tried adding:

[[language]]
name = "cobweb"
scope = "source.cobweb" # also tried "source.cob"
file-types = [ "cob", "cobweb" ]
auto-format = true
roots = []
#
[[grammar]]
name = "cobweb"
source = { git = "https://github.com/FabricSoul/tree-sitter-cobweb", rev = "main" }

Also, I've tried a few variants to this, but whenever I open a .cob file, I don't seem to have any evidence that tree-sitter is working:

$ hx --version
helix 25.01.1 (e7ac2fcd)

That seems to be using this version of tree-sitter:
https://github.com/tree-sitter/tree-sitter/tree/v0.22.0

I've also tried opening a file with :log-open, but don't see any cob-related errors. Rust highlighting works, for instance

[the-mikedavis]

See https://docs.helix-editor.com/master/guides/adding_languages.html#queries. You will also need to add a highlights.scm query in the runtime directory

[bbarker]

Ah, great, thanks. Just getting this now, so looks like I'll need to upgrade helix:

2025-06-04T07:24:42.254 helix_core::syntax [ERROR] Could not parse queries for language "cobweb". Are your grammars out of sync? Try running 'hx --grammar fetch' and 'hx --grammar build'. This query could not be parsed: QueryError { row: 0, column: 0, offset: 0, message: "Incompatible language version 15. Expected minimum 13, maximum 14", kind: Language }

I did notice that highlights.scm was already available under:

$HOME/.config/helix/runtime/grammars/sources/cobweb/queries/

But I'm not sure if that is a standard location for installed grammars, or if there is another reason for helix to not check there.

[the-mikedavis]

That path is the clone of the tree-sitter-cobweb repo and it has queries. The queries in each grammar's repo can be useful as a reference but we maintain separate queries under runtime/queries/<lang>/*.scm since we use a custom set of captures https://docs.helix-editor.com/master/themes.html#syntax-highlighting

And for the language version part you'll need to build from source - on master we have updated our dependency on the tree-sitter C library so that it supports grammars version 15+

[bbarker]

Thank you! All is working well now.