#12429: Pattern synonym parse error should recommend enabling extension -------------------------------------+------------------------------------- Reporter: agibiansky | Owner: Type: bug | Status: new Priority: low | Milestone: Component: Compiler | Version: 7.10.3 Resolution: | Keywords: | PatternSynonyms Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): That sounds very sensible and do-able. Would anyone like to offer a patch? We have precedents; e.g. a sensible error when people use `forall` without `RankNTypes`. Simon -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12429#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler