#14421: LambdaCase should be suggested if it is used but not enabled -------------------------------------+------------------------------------- Reporter: tomjaguarpaw | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.2.1 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- If I try to make a multiparameter typeclass GHC (well, GHCi here) advises me to turn on {{{MultiParamTypeClasses}}} {{{ Prelude> class C a b where ... (Use MultiParamTypeClasses to allow multi-parameter classes) }}} But if I try to use {{{\case}}} it doesn't give me a helpful suggestion {{{ Prelude> :t \case (_,_) -> () <interactive>:1:2: error: parse error on input ‘case’ }}} Could it? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14421 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler