monad parsing article....

[David Feuer]

In "Monadic Parser Combinators" (1996)  by Graham Hutton and Erik Meijer,
the authors state that
	"Some prior exposure to functional programming would be helpful in
reading this article, but special features of Gofer (Jones, 1995b) --- our
implementation language --- are explained as they are used.  Any other
lazy functional language that supports (multi-parameter) constructor
classes and the use of monad comprehension notation would do equally well.
...."

I am curious: was there any other language at the time supporting all of
these features, or was this a joke?  Also, why were monad comprehensions
removed from Haskell?  Was it for efficiency?

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