--- loncom/homework/caparesponse/caparesponse.pm	2001/07/20 21:19:03	1.36
+++ loncom/homework/caparesponse/caparesponse.pm	2001/07/23 22:40:59	1.37
@@ -143,7 +143,7 @@ sub end_numericalresponse {
 	} else {
 	  $format=$formats[0];
 	}
-	if (defined($format)) {
+	if ((defined($format)) && ($format ne '')) {
 	  &Apache::lonxml::debug("formatting with :$format: answer :$answer:");
 	  $result.=sprintf('%.'.$format,$answer).',';
 	} else {