#2530: deriving Show adds extra parens for constructor with record syntax -------------------------------------+------------------------------------- Reporter: spl | Owner: Type: bug | Status: new Priority: lowest | Milestone: 8.0.1 Component: Compiler | Version: 6.8.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D669 Wiki Page: | -------------------------------------+------------------------------------- Changes (by hvr): * status: closed => new * resolution: fixed => Comment: Btw, this also affects how GHCi displays results: {{{ GHCi, version 8.0.0.20160204: http://www.haskell.org/ghc/ :? for help Loaded GHCi configuration from /home/hvr/.ghci λ:1> data T = C { f1, f2 :: () } deriving Show data T = C {f1 :: (), f2 :: ()} f1 :: T -> () f2 :: T -> () λ:2> Just (C () ()) Just C {f1 = (), f2 = ()} it :: Maybe T λ:3> }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/2530#comment:30 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler