--- loncom/homework/lonmaxima.pm	2007/08/13 10:21:46	1.20
+++ loncom/homework/lonmaxima.pm	2008/06/10 13:31:38	1.22
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Interface routines to MAXIMA CAS
 #
-# $Id: lonmaxima.pm,v 1.20 2007/08/13 10:21:46 riegler Exp $
+# $Id: lonmaxima.pm,v 1.22 2008/06/10 13:31:38 www Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -63,7 +63,8 @@ sub blacklisted {
     foreach my $forbidden ('save','load','plot','lisp','includ','compil',
 			   'file','batch','stringout','translat','stout',
 			   'stin','block','system','concat','read','inchar',
-			   'outchar','ttyoff','with_stdout','writefile') {
+			   'outchar','ttyoff','with_stdout','writefile',
+			   'reset') {
 	if ($cmd=~/$forbidden/s) { return 1; }
     } 
     return 0;
@@ -138,6 +139,8 @@ sub maxima_check {
     # integer to string mappings come from capaParser.h
     # 1 maps to 'EXACT_ANS'
     if ($reply eq 'true') { return 1; }
+    # 11 maps to 'BAD_FORMULA'
+    if ($reply=~/^Error\:/) { return 11; }
     # 7 maps to 'INCORRECT'
     return 7;
 }