--- loncom/homework/inputtags.pm	2002/11/08 20:34:10	1.73
+++ loncom/homework/inputtags.pm	2002/11/27 19:25:56	1.75
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # input  definitons
 #
-# $Id: inputtags.pm,v 1.73 2002/11/08 20:34:10 sakharuk Exp $
+# $Id: inputtags.pm,v 1.75 2002/11/27 19:25:56 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -47,6 +47,8 @@ sub initialize_inputtags {
   @Apache::inputtags::responselist=();
   # list of whether or not a specific response was previously used
   @Apache::inputtags::previous=();
+  # submission it was used in
+  @Apache::inputtags::previous_version=();
   # id of current part, 0 means that no part is current (inside <problem> only
   $Apache::inputtags::part='';
   # list of problem date statuses, the first element is for <problem>
@@ -169,6 +171,8 @@ sub start_textline {
   } elsif ($target eq 'modified') {
     my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'size');
     if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
+  } elsif ($target eq 'tex') {
+      $result='\framebox[1cm][s]{\hfill}';
   }
   return $result;
 }
@@ -386,13 +390,23 @@ sub grade {
     my $finalaward = &finalizeawards(@awards);
     my $previously_used;
     if ( $#Apache::inputtags::previous eq $#awards ) {
-      $previously_used = 'PREVIOUSLY_LAST';
-      foreach my $value (@Apache::inputtags::previous) {
-	if ($value eq 'PREVIOUSLY_USED' ) {
-	  $previously_used = $value;
-	  last;
+	my $match=0;
+	my @matches;
+	foreach my $versionar (@Apache::inputtags::previous_version) {
+	    foreach my $version (@$versionar) {
+		$matches[$version]++;
+	    }
+	}
+	foreach my $elem (@matches) {if ($elem eq ($#awards+1)) {$match=1;}}
+	if ($match) {
+	    $previously_used = 'PREVIOUSLY_LAST';
+	    foreach my $value (@Apache::inputtags::previous) {
+		if ($value eq 'PREVIOUSLY_USED' ) {
+		    $previously_used = $value;
+		    last;
+		}
+	    }
 	}
-      }
     }
     &Apache::lonxml::debug("final award $finalaward, $previously_used");
     &setgradedata($finalaward,$id,$previously_used);