nvim-treesitter/queries/ungrammar/highlights.scm

(comment) @comment @spell

(definition) @keyword

(identifier) @variable

(label_name) @label

(token) @string

[
  "="
  "|"
] @operator

[
  "*"
  "?"
] @repeat

[
  ":"
] @punctuation.delimiter

[
  "("
  ")"
] @punctuation.bracket

(ERROR) @error