#11451: Inconsistent warnings for unused binders -------------------------------------+------------------------------------- Reporter: simonpj | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by ekmett): It is worth noting that we've developed a sort of culture of signaling intent with the names of those variables, when a Haskell programmer sees 'a' or 'b' they usually expect something of kind *, f as something of kind * -> *, etc. Is it right? Arguably not, but it is useful. If we're forced to replace all of those with _'s a lot of signal will be lost. There is also a concern that a warning here is something users won't be able to act on if they want to work at all on older compilers that didn't allow _s there. I don't have a concrete counter-proposal, but I do feel ill at ease. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11451#comment:8 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler