--- loncom/homework/default_homework.lcpm	2004/03/26 20:10:42	1.77
+++ loncom/homework/default_homework.lcpm	2004/05/17 18:26:31	1.78
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA 
 # used by lonxml::xmlparse() as input variable $safeinit to Apache::run::run()
 #
-# $Id: default_homework.lcpm,v 1.77 2004/03/26 20:10:42 albertel Exp $
+# $Id: default_homework.lcpm,v 1.78 2004/05/17 18:26:31 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -513,7 +513,7 @@ sub chemparse {
 	
 	my $molecule = $2;
 	# subscripts
-	$molecule =~ s|(?<=[a-zA-Z\[\s])(\d+)|<sub>$1</sub>|g;
+	$molecule =~ s|(?<=[a-zA-Z\)\]\s])(\d+)|<sub>$1</sub>|g;
 	# superscripts
 	$molecule =~ s|\^(\d*[+\-]*)|<sup>$1</sup>|g;
 	# strip whitespace