[Haskell-cafe] Re: Some trouble with AttoParsec.

[Jason Dusek]

  Aha. From `Data.ByteString.Lazy` we have:

    null :: ByteString -> Bool
    null Empty = True
    null _     = False

  So either users need to norm ByteStrings before testing
  them for emptiness or it needs to happen within the ByteString
  code...

--
Jason Dusek