#2530: deriving Show adds extra parens for constructor with record syntax -------------------------------------+------------------------------------- Reporter: spl | Owner: bgamari Type: bug | Status: patch Priority: highest | 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: | Phab:D2027 -------------------------------------+------------------------------------- Comment (by Ben Gamari ): In [changeset:"1448f8ab2379452312f1f74f6d5ba4de8ad3d47e/ghc" 1448f8ab/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="1448f8ab2379452312f1f74f6d5ba4de8ad3d47e" Show: Restore redundant parentheses around records As discussed in #2530 we are going to continue to produce parentheses here in order to preserve compatibility with previous GHC releases. It was found that dropped parentheses would break some testsuites which compared against output from Show. This has been documented in the users guide. This reverts commit 5692643c9d17e746327588cd6157a923642b7975. Test Plan: Validate Reviewers: hvr, austin Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D2027 GHC Trac Issues: #2350 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/2530#comment:39 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler