#10932: Pattern synonyms and view pattern arguments -------------------------------------+------------------------------------- Reporter: nomeata | Owner: Type: feature | Status: new request | Priority: normal | Milestone: Component: Compiler | Version: 7.10.2 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | -------------------------------------+------------------------------------- In my code, I had a few complicated patterns involving view patterns that depended on local arguments, i.e. {{{ foo env (someView env -> Just x) = ... }}} I was hoping to be able to use PatternSynonyms to abstract and simplify this: {{{ pattern Pat env x <- (someView env -> Just x) foo env (Pat env x) = ... }}} but it says `Not in scope: env`. It would be nice if I could use pattern synonyms here as well. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10932 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler