Well, sort of. Ok, we can parse that. Let's assume a variable x holds
the output of :show modules as a String. We call lines on it, then map
words on it, do a !! 2 on it, and we get ["Util.hs,", "Recorder.hs,",
"Game.hs,", "Monadius.hs,", "Demo.hs,"]. Chuck in a map (filter (\=
',')), and we get a good list. We can turn the list into a string
suitable for hlint with a quick unwords.
So our long sought after command becomes ':def hoogle (\_ -> return $
":! " ++ (unwords $ map (filter (\= ',')) $ (map words $ lines x) !!
2))'. But wait, how do we get 'x'? How do we call :show modules inside
a Haskell expression? I have carefully looked over
http://haskell.org/haskellwiki/GHC/GHCi#Using_GHCi and
http://www.haskell.org/ghc/docs/latest/html/users_guide/ghci-commands.html
and my conclusion is that you can't. You can't do a let x = :show
modules, there is no function which will take ":show modules", and so
on. :functions can accept Haskell output, but it's a one-way barrier.
It's no good writing Haskell functions which need information from the
:functions.
The first url includes a link to a .ghci mini-tutorial (section 4) that,
among other things, implements
:redir <var> <cmd> -- execute <cmd>, redirecting stdout to <var>
Happy Holidays!-)
Claus
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