prettyPreAcc pp alvl wrap (ZipWith f acc1 acc2)
  = wrap 
  $ prettyArrOp "zipWith"
      [parens (prettyPreFun pp alvl f), pp alvl parens acc1, pp alvl parens acc2]
prettyPreAcc pp alvl wrap (ZipWith f acc1 acc2)
  = wrap 
  $ prettyArrOp "zipWith"
      [parens (prettyPreFun pp alvl f), pp alvl parens acc1, pp alvl parens acc2]
prettyPreAcc pp alvl wrap (ZipWith f acc1 acc2)
  = wrap 
  $ prettyArrOp "zipWith"
      [parens (prettyPreFun pp alvl f), pp alvl parens acc1, pp alvl parens acc2]