--- loncom/xml/lonxml.pm	2003/09/27 04:08:56	1.281
+++ loncom/xml/lonxml.pm	2003/10/01 21:13:50	1.282
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # XML Parser Module 
 #
-# $Id: lonxml.pm,v 1.281 2003/09/27 04:08:56 albertel Exp $
+# $Id: lonxml.pm,v 1.282 2003/10/01 21:13:50 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -163,6 +163,9 @@ $Apache::lonxml::style_end_values='';
 #array of ssi calls that need to occur after we are done parsing
 @Apache::lonxml::ssi_info=();
 
+#should we do the postag variable interpolation
+$Apache::lonxml::post_evaluate=1;
+
 sub xmlbegin {
   my $output='';
   if ($ENV{'browser.mathml'}) {
@@ -477,7 +480,7 @@ sub inner_xmlparse {
 	&Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
       }
       #evaluate variable refs in result
-      if ($result ne "") {
+      if ($Apache::lonxml::post_evaluate &&$result ne "") {
 	  my $extras;
 	  if (!$Apache::lonxml::usestyle) {
 	      $extras=$Apache::lonxml::style_values;
@@ -488,6 +491,8 @@ sub inner_xmlparse {
 	  $result= &Apache::run::evaluate($result,$safeeval,$extras);
 	}
       }
+      $Apache::lonxml::post_evaluate=1;
+
       if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
 	  #Style file definitions should be correct
 	  if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
@@ -608,6 +613,7 @@ sub setup_globals {
   @Apache::lonxml::pwd=();
   @Apache::lonxml::extlinks=();
   @Apache::lonxml::ssi_info=();
+  $Apache::lonxml::post_evaluate=1;
   if ($target eq 'meta') {
     $Apache::lonxml::redirection = 0;
     $Apache::lonxml::metamode = 1;