SOURCE_FILE@0..14
  FN@0..7
    FN_KW@0..2 "fn"
    WHITESPACE@2..3 " "
    NAME@3..6
      IDENT@3..6 "foo"
    PARAM_LIST@6..7
      L_PAREN@6..7 "("
  ERROR@7..8
    R_CURLY@7..8 "}"
  ERROR@8..9
    R_PAREN@8..9 ")"
  WHITESPACE@9..10 " "
  ERROR@10..13
    L_CURLY@10..11 "{"
    WHITESPACE@11..12 "\n"
    R_CURLY@12..13 "}"
  WHITESPACE@13..14 "\n"
error 7..7: expected value parameter
error 7..7: expected R_PAREN
error 7..7: expected a block
error 7..7: unmatched `}`
error 8..8: expected an item
error 10..10: expected an item
