scope(exit) and Ctrl-C

[Wanderer]

I wonder why `scope(exit)` code is not executed when the program 
is terminated with Ctrl-C.

For example:

```
import std.stdio;
import core.thread;

void main()
{
     scope (exit)
     {
         writeln("Cleanup");
     }
     writeln("Waiting...");
     Thread.sleep(10.seconds);
     writeln("Done waiting...");
}
```

If I wait 10 seconds, I get "Cleanup" output.
But if I use Ctrl-C to terminate the program before 10 seconds 
elapse, there's no "Cleanup" output.

Is it intentional?
Is there any method to cleanup on Ctrl-C?