#11706: Increase precedence of lexps (if-then-else, case-of, do, lambda and let-in) -------------------------------------+------------------------------------- Reporter: YoYoYonnY | Owner: Type: feature request | Status: infoneeded Priority: lowest | Milestone: ⊥ Component: Compiler | Version: (Parser) | Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by YoYoYonnY): Thanks for linking that ticket, I skimmed over the list of feature requests, but could not find any other requests asking for increased {{{lexp}}} precedence or similair. I suppose I underestimated the priority of this feature request. The typos in the ticket should now be fixed. The ticket is also simplified, the old code examples have been moved to Pastebin [http://pastebin.com/6kLQvKs9 here] (As a permament paste) for readability, and the cheesy intro has been moved to a separate Pastebin too, [http://pastebin.com/8Fsh7pAE here], to save a few clicks. I'll work on making more clean and general examples. I have to say that I agree; the proposal is mostly useless, one or two characters saved won't make a big difference. However, with other similair pragmas already implemented (UnicodeSyntax, RecordWildCards and TupleSections to name a few) I think it is reasonable to implement this feature somewhere in the future, be it with low priority. I think it is fair to refer to {{{if-then-else}}}, {{{case-of}}}, {{{do}}}, {{{lambda}}} and {{{let-in}}} as {{{lexp}}}, following https://www.haskell.org/onlinereport/haskell2010/haskellch10.html#x17-17800010.3|layout, unless of course someone can think of a better term. The set of {{{lexp}}}s could of course also easily be extended with {{{lambda-case}}} and {{{mdo}}} (If this is not already the case). I have added {{{lambda}}} and {{{let-in}}} to the title, as these are part of the proposal. I've also added {{{lambda}}} to the examples, aswell as {{{lambda-case}}}, {{{mdo}}} and infix ones. I will leave the creation of a Wiki up to someone with more experience with the GHC Parser, although I might look into it myself sometime soon. As to if this ticket is diferentiatable from [https://ghc.haskell.org/trac/ghc/ticket/10843 #10843], I would say yes, this ticket is more general, however I would strongly recommend merging this ticket with [https://ghc.haskell.org/trac/ghc/ticket/10843 #10843], if that is in any way possible. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11706#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler