[Haskell-cafe] An interesting monad: "Prompt"

[Brent Yorgey]

> > -- Just for fun, make it work with StateT as well
> > -- (needs -fallow-undecidable-instances)
>
> > instance (Monad (t m), MonadTrans t, MonadPrompt p m) => MonadPrompt p
> (tm) where
> >    prompt = lift . prompt
>

Looks like that should be MonadPrompt p (t m) rather than (tm).  Note the
space.

-Brent
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