CRTL-C (interrupt) does not always work on the toplevel

Hi!

Here's a short synopsis of my machine's configuration:

	stefan@schlaubi:~$ gprolog --version
	Prolog top-Level (GNU Prolog) 1.2.16
	...
	stefan@schlaubi:~$ uname -a
	Linux schlaubi 2.2.20-compact #1 Sat Apr 20 12:40:22 EST 2002 i686
	unknown

The configuration/installation process worked out ok.

Session log starts.
	stefan@schlaubi:~$ gprolog 
	GNU Prolog 1.2.16
	By Daniel Diaz
	Copyright (C) 1999-2002 Daniel Diaz
	| ?- repeat, fail.

	Prolog interruption (h for help) ? a
	execution aborted
	| ?- repeat, fail.
Session log ends.

While CTRL-c works fine the first time, it does not the second time.
The process continues to run until it is killed from outside.

Regards,
Stefan

-- 
Stefan Kral            http://www.complang.tuwien.ac.at/skral/