--- loncom/homework/optionresponse.pm	2002/11/13 16:53:11	1.63
+++ loncom/homework/optionresponse.pm	2003/01/19 08:10:22	1.67
@@ -1,7 +1,7 @@
 # LearningOnline Network with CAPA
 # option list style responses
 #
-# $Id: optionresponse.pm,v 1.63 2002/11/13 16:53:11 sakharuk Exp $
+# $Id: optionresponse.pm,v 1.67 2003/01/19 08:10:22 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -248,6 +248,7 @@ sub whichfoils {
   my ($max,$randomize)=@_;
   $max = &getfoilcounts($max);
   &Apache::lonxml::debug("randomize $randomize");
+  if (!defined(@{ $Apache::response::foilgroup{'names'} })) {return;}
   my @names = @{ $Apache::response::foilgroup{'names'} };
   my @whichopt =();
   my (%top,@toplist,%bottom,@bottomlist);
@@ -294,6 +295,7 @@ sub whichfoils {
 
 sub displayanswers {
   my ($max,$randomize,@opt)=@_;
+  if (!defined(@{ $Apache::response::foilgroup{'names'} })) {return;}
   my @names = @{ $Apache::response::foilgroup{'names'} };
   my @whichopt = &whichfoils($max,$randomize);
   my $result=&Apache::response::answer_header('optionresponse');
@@ -307,6 +309,7 @@ sub displayanswers {
 
 sub displayfoils {
   my ($target,$max,$randomize,@opt)=@_;
+  if (!defined(@{ $Apache::response::foilgroup{'names'} })) {return;}
   my @names = @{ $Apache::response::foilgroup{'names'} };
   my @truelist;
   my @falselist;
@@ -319,8 +322,11 @@ sub displayfoils {
   my $part=$Apache::inputtags::part;
   my $id=$Apache::inputtags::response[-1];
   my $break;
-  if (($Apache::lonhomework::history{"resource.$part.solved"} =~ /^correct/)  || ($Apache::inputtags::status[-1] eq  'SHOW_ANSWER')) {    
-    my $temp=1; ####
+  my $solved=$Apache::lonhomework::history{"resource.$part.solved"};
+  my $status=$Apache::inputtags::status[-1];
+  if (
+      ($target ne 'tex') &&
+      (($solved =~ /^correct/) || ($status eq 'SHOW_ANSWER')) ) {
     foreach $name (@whichopt) {
 	my $text=$Apache::response::foilgroup{$name.'.text'};
 	if ($text!~/^\s*$/) {
@@ -353,7 +359,6 @@ sub displayfoils {
 	  $result.=&bubbles(\@alphabet,\@opt);
         }
       }
-    $temp++;
     }
   } else {
     my $temp=1;
@@ -401,7 +406,7 @@ sub displayfoils {
 	        if ($Apache::response::foilgroup{$name.'.text'}=~/<drawoptionlist\s*\/>/) {
 	          $Apache::response::foilgroup{$name.'.text'}=~s|<drawoptionlist\s*/>| \\makebox\[0\.3in\]\[b\]\{\\hrulefill\} |;
 	        }
-	          $result.= $texoptionlist.$Apache::response::foilgroup{$name.'.text'};
+		$result.= $texoptionlist.$Apache::response::foilgroup{$name.'.text'};
 	      } else {
 		  if ($Apache::lonhomework::type eq 'exam') {
 		      $result.= $texoptionlist.'\vspace*{-2 mm}\item[\textbf{'.$Apache::lonxml::counter.'}.]'.$Apache::response::foilgroup{$name.'.text'};
@@ -411,6 +416,7 @@ sub displayfoils {
 	      }
 	      if ($Apache::lonhomework::type eq 'exam') {
 		  $result.=&bubbles(\@alphabet,\@opt);
+		  $result.='\vskip 2 mm ';
 	      }
 	      $displayoptionintex=1;
 	  } else {
@@ -431,6 +437,7 @@ sub displayfoils {
 	      }
 	      if ($Apache::lonhomework::type eq 'exam') {
 		  $result.=&bubbles(\@alphabet,\@opt);
+		  $result.='\vskip 2 mm ';
 	      }
 	  }
       }
@@ -455,6 +462,7 @@ sub optionlist_correction {
     $texoptionlist =~ s/>/\$>\$/g;
     $texoptionlist =~ s/</\$<\$/g;
     $texoptionlist =~ s/=/\$=\$/g;
+    $texoptionlist =~ s/\^(\d+)/<m>\$$1\$<\/m>/g;
     return $texoptionlist;
 }