#13584: ghci parse error on operator info -------------------------------------+------------------------------------- Reporter: akegalj | Owner: (none) Type: bug | Status: new Priority: lowest | Milestone: Component: GHCi | Version: 8.0.2 Resolution: | Keywords: parse, info, | operator Operating System: Linux | Architecture: x86_64 Type of failure: Incorrect result | (amd64) at runtime | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by anarchist666): The {{{words}}} operator is used in the {{{:info}}} command. {{{ info :: Bool -> String -> InputT GHCi () info _ "" = throwGhcException (CmdLineError "syntax: ':i <thing-you-want- info-about>'") info allInfo s = handleSourceError GHC.printException $ do unqual <- GHC.getPrintUnqual dflags <- getDynFlags sdocs <- mapM (infoThing allInfo) (words s) mapM_ (liftIO . putStrLn . showSDocForUser dflags unqual) sdocs }}} But you can type {{{:info + -}}} and get this {{{ class Num a where (+) :: a -> a -> a ... -- Defined in ‘GHC.Num’ infixl 6 + class Num a where (-) :: a -> a -> a ... -- Defined in ‘GHC.Num’ infixl 6 - }}} We can filter all brackets in the input line, but I want to know what the others think about it. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13584#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler