--- loncom/homework/caparesponse/caparesponse.pm	2007/03/15 02:51:29	1.210
+++ loncom/homework/caparesponse/caparesponse.pm	2007/04/16 23:25:12	1.211
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # caparesponse definition
 #
-# $Id: caparesponse.pm,v 1.210 2007/03/15 02:51:29 albertel Exp $
+# $Id: caparesponse.pm,v 1.211 2007/04/16 23:25:12 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -1025,6 +1025,19 @@ sub get_sigrange {
     return ($sig_ubound,$sig_lbound);
 }
 
+sub setup_prior_tries_hash_string {
+    my $part=$Apache::inputtags::part;
+    my $id=$Apache::inputtags::response[-1];	
+    foreach my $i (1..$Apache::lonhomework::history{'version'}) {
+	my $key = "$i:resource.$part.$id.submission";
+	next if (!exists($Apache::lonhomework::history{"$key"}));
+	$Apache::inputtags::submission_display{$key} =
+	    '<span class="LC_prior_string">'.
+	    &HTML::Entities::encode($Apache::lonhomework::history{$key},
+				    '"<>&').'</span>';
+    }
+}
+
 sub start_stringresponse {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result;
@@ -1202,6 +1215,8 @@ sub end_stringresponse {
 	}
     } elsif ($target eq 'edit') {
 	$result.='</td></tr>'.&Apache::edit::end_table;
+    } elsif ($target eq 'web' || $target eq 'tex') {
+	&setup_prior_tries_hash_string();
     }
     if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' || 
 	$target eq 'tex' || $target eq 'analyze') {