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

src-3.0/GF/System/Signal.hs

@@ -0,0 +1,27 @@
+{-# OPTIONS -cpp #-}
+
+----------------------------------------------------------------------
+-- |
+-- Module      : GF.System.Signal
+-- Maintainer  : Bjorn Bringert
+-- Stability   : (stability)
+-- Portability : (portability)
+--
+-- > CVS $Date: 2005/11/11 11:12:50 $ 
+-- > CVS $Author: bringert $
+-- > CVS $Revision: 1.3 $
+--
+-- Import the right singal handling module.
+-----------------------------------------------------------------------------
+
+module GF.System.Signal (runInterruptibly,blockInterrupt) where
+
+#ifdef USE_INTERRUPT
+
+import GF.System.UseSignal (runInterruptibly,blockInterrupt)
+
+#else
+
+import GF.System.NoSignal (runInterruptibly,blockInterrupt)
+
+#endif