#13835: ghci with ":set +t" should print type before starting evaluation -------------------------------------+------------------------------------- Reporter: j.waldmann | Owner: (none) Type: feature request | Status: new Priority: normal | Milestone: Component: GHCi | Version: 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 vanto): Hello,\\ If you write this, you have\\ {{{ Prelude> :set + t Prelude> let y = reverse [True] y :: [Bool] Prelude> y [True] it :: [Bool] Prelude> let z = True && undefined z :: Bool Prelude> z *** Exception: Prelude.undefined CallStack (from HasCallStack): error, called at libraries\base\GHC\Err.hs:79:14 in base:GHC.Err undefined, called at <interactive>:8:17 in interactive:Ghci6 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13835#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler