type: re_lex
patterns:
- pattern: "[_a-zA-Z][._a-zA-Z0-9]*"
  keep: true
  attr: a_identifier
- pattern: "\\("
  keep: true
  attr: a_open
- pattern: "\\)"
  keep: true
  attr: a_close
- pattern: ","
  keep: true
- pattern: "[ 	]+"
  keep: false
child:
  &term
  id: term
  type: or
  children:
  - type: seq
    id: function
    children:
    - type: any
      id: function_name
      attr: a_identifier
    - type: any
      attr: a_open
    - type: option
      id: term_list
      child:
        type: seq
        children:
        - *term
        - type: many
          child:
            type: seq
            children:
            - type: str
              string: ","
            - *term
    - type: any
      attr: a_close