((output
  (((f.ml (1 0) (1 12)) (paragraph (((f.ml (1 0) (1 12)) (code_span "")))))))
 (warnings
  ( "File \"f.ml\", line 1, characters 0-12:\
   \n'{%%%foo%%:': bad raw markup target.\
   \nSuggestion: try '{%html:...%}'.")))
