Re: "Elvis" operator (?:) as a reverse infix form of "fromMaybe"

Yes, I understand |> :: Alternative f => f a -> a -> a as what you are asking for, for an Alternative that can default to something. Back to your suggestion, I personally find a written-out `fromMaybe` nicer syntax, especially because it fits well into the naming of the other `from...` functions, and the fact that the value comes from a maybe suggests to me that I have to give a defaul there.