================================================================================
Whitespace and comments
================================================================================

foo
; comment

bar

--------------------------------------------------------------------------------

(source_file
  (symbol)
  (comment)
  (symbol))

================================================================================
Control characters and no-break space are whitespace
================================================================================

ab
cd
e f
(gh)

--------------------------------------------------------------------------------

(source_file
  (symbol)
  (symbol)
  (symbol)
  (symbol)
  (symbol)
  (symbol)
  (list
    (symbol)
    (symbol)))
