#15510: Qualified Holes -------------------------------------+------------------------------------- Reporter: andrewthad | Owner: (none) Type: feature | Status: new request | Priority: low | Milestone: 8.6.1 Component: Compiler | Version: 8.4.3 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- Let us consider the following example code: {{{ import qualified Data.Map as M main :: IO () main = print (M._ (\k v acc -> k + v + acc) 0 myMap) myMap :: Map Int Int myMap = ... }}} This errors with `Not in scope: M._`. It would cool if GHC instead treated `M._` as a hole but only gave suggestions from the module `Data.Map`. So, in this case, it would suggest things like `Data.Map.foldrWithKey` and `Data.Map.foldlWithKey`. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15510 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler