allow Ctrl+Break in the shell. Works on Windows too.

src-3.0/GF/System/NoSignal.hs

@@ -0,0 +1,29 @@
+----------------------------------------------------------------------
+-- |
+-- Module      : GF.System.NoSignal
+-- Maintainer  : Bjorn Bringert
+-- Stability   : (stability)
+-- Portability : (portability)
+--
+-- > CVS $Date: 2005/11/11 11:12:50 $ 
+-- > CVS $Author: bringert $
+-- > CVS $Revision: 1.1 $
+--
+-- Dummy implementation of signal handling.
+-----------------------------------------------------------------------------
+
+module GF.System.NoSignal where
+
+import Control.Exception (Exception,catch)
+import Prelude hiding (catch)
+
+{-# NOINLINE runInterruptibly #-}
+runInterruptibly :: IO a -> IO (Either Exception a)
+--runInterruptibly = fmap Right
+runInterruptibly a = 
+    p `catch` h
+  where p = a >>= \x -> return $! Right $! x
+        h e = return $ Left e
+
+blockInterrupt :: IO a -> IO a
+blockInterrupt = id