((output
  (((f.ml (1 0) (1 6)) (paragraph (((f.ml (1 0) (1 6)) (link foo ())))))))
 (warnings
  ( "File \"f.ml\", line 1, characters 6-6:\
   \nEnd of text is not allowed in '{{:...} ...}' (external link)."
    "File \"f.ml\", line 1, characters 6-6:\
   \nEnd of text is not allowed in '{{:...} ...}' (external link).")))
