#10189: explicit promotions of prefix data constructors can't be parsed naturally -------------------------------------+------------------------------------- Reporter: Kinokkory | Owner: Kinokkory Type: bug | Status: new Priority: normal | Milestone: 7.12.1 Component: Compiler | Version: 7.8.4 (Parser) | Keywords: Resolution: | Architecture: Operating System: Unknown/Multiple | Unknown/Multiple Type of failure: GHC rejects | Test Case: valid program | Blocking: Blocked By: | Differential Revisions: Related Tickets: #10188 | -------------------------------------+------------------------------------- Comment (by goldfire): Yes, that would be a new unexplored ball of wax, and I don't intend to explore it tonight. But, how about this: allow all four forms mentioned above. I have two reasons: * No breakage of existing code. * It's conceivable that the quote-on-the-outside form (that is, the existing, stupid form) will make decent sense some day. But please don't do this if it's hard. I fully agree on not paying now for something that might not happen later. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10189#comment:8 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler