#2986: :info printing instances often isn't wanted ---------------------------------+------------------------------------------ Reporter: Remi | Owner: Remi Type: feature request | Status: new Priority: lowest | Milestone: 7.6.2 Component: GHCi | Version: 6.10.1 Keywords: :info instances | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | ---------------------------------+------------------------------------------ Comment(by Remi): This is probably going to be the longest standing feature request ever, but half a year after losing the previous version of my patch I got around to creating a new one. However, before I polish and post it, I'd like to get you guys' opinion on something I hacked^Wadded to it: {{{ *InteractiveUI Control.Monad> :instances Monad Monad GHCi Monad Lexer.P Monad (Either e) Monad m => Monad (InputT m) Monad Maybe Monad m => Monad (GHC.GhcT m) Monad Ghc Monad [] Monad IO Monad ((->) r) *InteractiveUI Control.Monad> *InteractiveUI Control.Monad> :i Monad [] class Monad m where (>>=) :: m a -> (a -> m b) -> m b (>>) :: m a -> m b -> m b return :: a -> m a fail :: String -> m a -- Defined in `GHC.Base' {- (->) r, [], Either e, Ghc, GHCi, GhcT m, InputT m, IO, Maybe, P -} data [] a = [] | a : [a] -- Defined in `GHC.Types' {- Alternative, Applicative, Eq, Functor, Monad, MonadPlus, Ord, Outputable, PrintfArg, PrintfType, Read, Show -} }}} The question being, what do you think about the instance-summary with :info? -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/2986#comment:22 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler