[PATCH] Add deprecations status of unGetChan and isEmptyChan to Haddock comment

[Simon Hengel]

Hi Ian,

> Hmm, I agree the info should be in the docs, but I think it would be
> better if haddock extracted the info from the pragma, rather than us
> having to repeat ourselves all the time.

I agree,  we even have a ticket for that [1].

I'd still lean toward "repeating ourselves" until that feature is
available (this is done for the other deprecated functions in base
anyway), but I've no strong opinion about that.

Cheers,
Simon

[1] http://trac.haskell.org/haddock/ticket/38