#10996: family is treated as keyword in types even without TypeFamilies enabled -------------------------------------+------------------------------------- Reporter: oerjan | Owner: Type: bug | Status: new Priority: low | Milestone: Component: Compiler | Version: 7.10.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: GHC rejects | Test Case: type Test valid program | family = family Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by oerjan): Just as a musing, I think it ''might'' just be possible to treat `family` entirely as a non-keyword like `as` or `hiding`. The only kind of ambiguity I can think of that requires lookahead is with `TypeOperators` enabled and {{{ type family MyTypeFamily a b = ... type family :~: work = ... }}} but even then, it is disambiguated by whether the next token is an identifier or an operator. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10996#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler