--- loncom/homework/matchresponse.pm	2004/12/04 00:41:26	1.48
+++ loncom/homework/matchresponse.pm	2005/01/10 19:21:57	1.49
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Full matching style response
 #
-# $Id: matchresponse.pm,v 1.48 2004/12/04 00:41:26 albertel Exp $
+# $Id: matchresponse.pm,v 1.49 2005/01/10 19:21:57 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -646,7 +646,10 @@ sub end_foil {
 	if ($value ne 'unused') {
 	    my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
 	    &Apache::lonxml::debug("Got a name of :$name:");
-	    if (!$name) { $name=$Apache::lonxml::curdepth; }
+	    if (!$name) {
+		&Apache::lonxml::error("Foils without names exist. This can cause problems to malfunction.");
+		$name=$Apache::lonxml::curdepth;
+	    }
 	    &Apache::lonxml::debug("Using a name of :$name:");
 	    if (defined($Apache::response::foilnames{$name})) {
 		&Apache::lonxml::error(&mt("Foil name <b><tt>[_1]</tt></b> appears more than once. Foil names need to be unique.",$name));