A better `:browse` command (GHCi)

Question

I'd like to write a GHCi macro that augments :browse by filtering the list of results (basically, a simple grep for :browse: output). For example, to see all output that includes the word Monad:

 Prelude> :mybrowse Prelude Monad
 (=<<) :: Monad m => (a -> m b) -> m a -> m b
 class Monad m where
 mapM :: Monad m => (a -> m b) -> [a] -> m [b]
 mapM_ :: Monad m => (a -> m b) -> [a] -> m ()
 sequence :: Monad m => [m a] -> m [a]
 sequence_ :: Monad m => [m a] -> m ()
 Prelude> 

I can't see a way to implement this using :def. Is there a way?

Answer 1

Did something like this (and a bit more) a few years ago and wrote it up as a tutorial. No idea whether it'll still work, but have a look

http://www.haskell.org/haskellwiki/Ghci#Using_.ghci.2C_a_mini-tutorial