--- loncom/homework/edit.pm	2004/01/15 03:24:52	1.78
+++ loncom/homework/edit.pm	2004/02/13 21:12:54	1.79
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA 
 # edit mode helpers
 #
-# $Id: edit.pm,v 1.78 2004/01/15 03:24:52 www Exp $
+# $Id: edit.pm,v 1.79 2004/02/13 21:12:54 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -532,6 +532,9 @@ sub get_new_args {
 		$token->[2]->{$arg}=$newvalue;
 	    }
 	    $rebuild=1;
+	} elsif (!defined($newvalue) && defined($value)) {
+	    delete($token->[2]->{$arg});
+	    $rebuild=1;
 	}
     }
     return $rebuild;