((output
  (((f.ml (1 0) (1 7))
    (paragraph (((f.ml (1 0) (1 7)) (code_span "L foo")))))))
 (warnings
  ( "File \"f.ml\", line 1, characters 0-7:\
   \n'{L foo}': bad markup.\
   \nSuggestion: did you mean '{!L foo}' or '[L foo]'?")))
