((output
  (((f.ml (1 0) (1 5)) (paragraph (((f.ml (1 0) (1 5)) (code_span foo)))))))
 (warnings
  ( "File \"f.ml\", line 1, characters 0-5:\
   \n'{foo}': bad markup.\
   \nSuggestion: did you mean '{!foo}' or '[foo]'?")))
