mdArrApp arrow arg _ HsHigherOrderApp False)
  = hsep [ppr_lexpr arg, arrowtt, ppr_lexpr arrow]

ppr_cmd (H
ppr_cmd (HsCmdArrApp arrow arg _ HsHigherOrderApp False)
  = hsep [ppr_lexpr arg, arrowtt, ppr_lexpr arrow]
ppr_cmd (HsCmdArrApp arrow arg _ HsHigherOrderApp False)
  = hsep [ppr_lexpr arg, arrowtt, ppr_lexpr arrow]