#8581: Add support for explicitly-bidirectional pattern synonyms -------------------------------------+------------------------------------ Reporter: cactus | Owner: cactus Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler | Version: Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: 5144 Blocking: | Related Tickets: -------------------------------------+------------------------------------ Comment (by ntc2): I've often wished that `_` in expressions was a shorthand for `undefined`. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8581#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler