#14560: Typo in example on https://ghc.haskell.org/trac/ghc/wiki/PatternSynonyms -------------------------------------+------------------------------------- Reporter: pjljvdlaar | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Documentation | Version: 8.2.1 Keywords: type error | Operating System: Unknown/Multiple Architecture: | Type of failure: Documentation Unknown/Multiple | bug Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- In section Associated pattern synonyms on https://ghc.haskell.org/trac/ghc/wiki/PatternSynonyms is written class ListLike l where pattern Nil :: l a pattern Cons :: a -> l a -> a isNil :: l a -> Bool isNil Nil = True isNil (Cons _ _) = False yet should Cons not have signature pattern Cons :: a -> l a -> l a append :: l a -> l a -> l a -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14560 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler