--- loncom/homework/inputtags.pm	2002/04/01 21:26:57	1.56
+++ loncom/homework/inputtags.pm	2002/07/25 20:55:13	1.58
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # input  definitons
 #
-# $Id: inputtags.pm,v 1.56 2002/04/01 21:26:57 albertel Exp $
+# $Id: inputtags.pm,v 1.58 2002/07/25 20:55:13 ng Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -78,6 +78,7 @@ sub start_textfield {
   my $id = &start_input($parstack,$safeeval);
   my $resid=$Apache::inputtags::response[-1];
   if ($target eq 'web') {
+    $Apache::lonxml::evaluate--;
     my $partid=$Apache::inputtags::part;
     my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$resid.submission"});
     my $cols = &Apache::lonxml::get_param('cols',$parstack,$safeeval);
@@ -108,6 +109,7 @@ sub start_textfield {
 sub end_textfield {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   if ($target eq 'web') {
+    $Apache::lonxml::evaluate++;
     if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
       return "</textarea>";
     }
@@ -120,6 +122,7 @@ sub start_textline {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   my $result = "";
   if ($target eq 'web') {
+    $Apache::lonxml::evaluate--;
     my $size = &Apache::lonxml::get_param('size',$parstack,$safeeval);
     if ($size eq '') { $size=20; }
     my $partid=$Apache::inputtags::part;
@@ -144,7 +147,8 @@ sub start_textline {
 
 sub end_textline {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
-  if ($target eq 'edit') { return ('','no'); }
+  if    ($target eq 'web') { $Apache::lonxml::evaluate++; }
+  elsif ($target eq 'edit') { return ('','no'); }
   return "";
 }
 
@@ -342,9 +346,10 @@ sub setgradedata {
       delete($Apache::lonhomework::results{"resource.$id.tries"});
       $Apache::lonhomework::results{"resource.$id.previous"} = '1';
     } elsif ( $previously_used eq 'PREVIOUSLY_LAST') {
-      #delete all data as they student didn't do anything
+      #delete all data as they student didn't do anything, but save
+      #the list of collaborators.
       foreach my $key (keys(%Apache::lonhomework::results)) {
-	if ($key =~ /^resource\.$id\./) {
+	if (($key =~ /^resource\.$id\./) && ($key !~ /\.collaborators$/)) {
 	  &Apache::lonxml::debug("Removing $key");
 	  delete($Apache::lonhomework::results{$key});
 	}