SOURCE_FILE
  FN
    ATTR
      POUND "#"
      L_BRACK "["
      META
        PATH
          PATH_SEGMENT
            NAME_REF
              IDENT "foo"
        TOKEN_TREE
          L_PAREN "("
          IDENT "foo"
          COMMA ","
          WHITESPACE " "
          PLUS "+"
          COMMA ","
          WHITESPACE " "
          INT_NUMBER "92"
          R_PAREN ")"
      R_BRACK "]"
    WHITESPACE "\n"
    FN_KW "fn"
    WHITESPACE " "
    NAME
      IDENT "foo"
    PARAM_LIST
      L_PAREN "("
      R_PAREN ")"
    WHITESPACE " "
    BLOCK_EXPR
      STMT_LIST
        L_CURLY "{"
        WHITESPACE "\n"
        R_CURLY "}"
  WHITESPACE "\n\n\n"
  ATTR
    POUND "#"
    L_BRACK "["
    META
      PATH
        PATH_SEGMENT
          NAME_REF
            IDENT "foo"
      TOKEN_TREE
        L_PAREN "("
        WHITESPACE "\n"
        FN_KW "fn"
        WHITESPACE " "
        IDENT "foo"
        TOKEN_TREE
          L_PAREN "("
          R_PAREN ")"
        WHITESPACE " "
        TOKEN_TREE
          L_CURLY "{"
          WHITESPACE "\n"
          R_CURLY "}"
  WHITESPACE "\n"
error 53: expected R_PAREN
error 53: expected `]`
error 53: expected an item