((comment) @injection.content
 (#set! injection.language "comment"))
;; asm_statement if asm ever highlighted :)

;; #include <...>
((hash_statement) @injection.content
 (#set! injection.language "c"))

;; regex for the methods defined in `re` module
((call_expression
    name: (selector_expression
      field: (reference_expression (identifier) @_re))
    arguments: (argument_list
  (argument (literal (raw_string_literal) @injection.content 
  (#offset! @injection.content 0 2 0 -1)))))
  (#any-of? @_re "regex_base" "regex_opt" "compile_opt")
  (#set! injection.language "regex"))