--- loncom/homework/optionresponse.pm	2002/10/01 14:39:45	1.49
+++ loncom/homework/optionresponse.pm	2003/10/27 20:04:34	1.94
@@ -1,7 +1,7 @@
 # LearningOnline Network with CAPA
 # option list style responses
 #
-# $Id: optionresponse.pm,v 1.49 2002/10/01 14:39:45 sakharuk Exp $
+# $Id: optionresponse.pm,v 1.94 2003/10/27 20:04:34 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -25,8 +25,6 @@
 #
 # http://www.lon-capa.org/
 #
-# 2/21 Guy
-# 01/18 Alex
 package Apache::optionresponse;
 use strict;
 use Apache::response;
@@ -42,6 +40,7 @@ sub start_optionresponse {
   &Apache::lonxml::register('Apache::optionresponse',('foilgroup','foil','conceptgroup'));
   push (@Apache::lonxml::namespace,'optionresponse');
   my $id = &Apache::response::start_response($parstack,$safeeval);
+  %Apache::hint::option=();
   if ($target eq 'edit') {
     $result.=&Apache::edit::start_table($token).
 	"<tr><td>Multiple Option Response Question</td><td>Delete:".
@@ -62,7 +61,7 @@ sub start_optionresponse {
   } elsif ($target eq 'meta') {
     $result=&Apache::response::meta_package_write('optionresponse');
   } elsif ($target eq 'analyze') {
-    my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
+    my $part_id="$Apache::inputtags::part.$id";
     push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
   }
   return $result;
@@ -140,7 +139,7 @@ ENDTABLE
       $result.=')">';
     } # else nothing changed so just use the default mechanism
   }
-  if ($target eq 'tex') {
+  if ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') {
       $result .= ' \begin{enumerate} ';
   }
   return $result;
@@ -150,10 +149,13 @@ sub end_foilgroup {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   
   my $result;
-  if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' || $target eq 'tex' || $target eq 'analyze') {
+  if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
+      $target eq 'tex' || $target eq 'analyze') {
+    my $tex_option_switch=&Apache::lonxml::get_param('texoptions',$parstack,$safeeval);
     my $name;
     my @opt;
     eval '@opt ='.&Apache::lonxml::get_param('options',$parstack,$safeeval);
+    if ($target eq 'tex' && $tex_option_switch eq 'nochoice') {@opt=();}
     &Apache::lonxml::debug("Options are $#opt");
     my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
     my $randomize = &Apache::lonxml::get_param('randomize',$parstack,
@@ -163,32 +165,34 @@ sub end_foilgroup {
     } elsif ( $target eq 'answer') {
       $result.=&displayanswers($max,$randomize,@opt);
     } elsif ( $target eq 'analyze') {
-      my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
-      foreach my $name (@{ $Apache::response::foilgroup{'names'} }) {
-	if (defined($Apache::lonhomework::analyze{"$part_id.foil.value.$name"})) { next; }
-	push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },$name);
-	$Apache::lonhomework::analyze{"$part_id.foil.value.$name"} =
-	  $Apache::response::foilgroup{"$name.value"};
-	$Apache::lonhomework::analyze{"$part_id.foil.text.$name"} =
-	  $Apache::response::foilgroup{"$name.text"};
-      }
-      push (@{ $Apache::lonhomework::analyze{"$part_id.options"} },@opt);
-      push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} },&whichfoils($max,$randomize));
+	my @shown = &whichfoils($max,$randomize);
+	&Apache::response::analyze_store_foilgroup(\@shown,
+						  ['text','value','location']);
+	my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
+	push (@{ $Apache::lonhomework::analyze{"$part_id.options"} },@opt);
     } elsif ( $target eq 'grade') {
       if ( defined $ENV{'form.submitted'}) {
 	my @whichopt = &whichfoils($max,$randomize);
 	my $temp=1;my $name;
 	my %responsehash;
+	my %grade;
 	my $right=0;
 	my $wrong=0;
 	my $ignored=0;
 	foreach $name (@whichopt) {
-	  my $response = $ENV{'form.HWVAL_'.$Apache::inputtags::response['-1'].":$temp"};
+	  my $response=&Apache::response::getresponse($temp);
+	  if ($ENV{'form.submitted'} eq 'scantron') {
+	      $response = $opt[$response];
+	  }
 	  $responsehash{$name}=$response;
 	  if ( $response =~ /[^\s]/) {
 	    my $value=$Apache::response::foilgroup{$name.'.value'};
 	    &Apache::lonxml::debug("submitted a $response for $value<br />\n");
-	    if ($value eq $response) {$right++;} else {$wrong++;}
+	    if ($value eq $response) {
+		$grade{$name}='1'; $right++;
+	    } else {
+		$grade{$name}='0'; $wrong++;
+	    }
 	  } else {
 	    $ignored++;
 	  }
@@ -197,32 +201,51 @@ sub end_foilgroup {
 	my $part=$Apache::inputtags::part;
 	my $id = $Apache::inputtags::response['-1'];
 	my $responsestr=&Apache::lonnet::hash2str(%responsehash);
+	my $gradestr   =&Apache::lonnet::hash2str(%grade);
 	my %previous=&Apache::response::check_for_previous($responsestr,
 							   $part,$id);
 	&Apache::lonxml::debug("Got $right right and $wrong wrong, and $ignored were ignored");
-	my $ad;
-	if ($wrong==0 && $ignored==0) {
-	  $ad='EXACT_ANS';
-	} elsif ($wrong==0 && $right==0) {
-	  #nothing submitted
+	$Apache::lonhomework::results{"resource.$part.$id.submission"}=
+	    $responsestr;
+	$Apache::lonhomework::results{"resource.$part.$id.submissiongrading"}=$gradestr;
+	
+	if (!$Apache::lonhomework::scantronmode) {
+	    my $ad;
+	    if ($wrong==0 && $ignored==0) {
+		$ad='EXACT_ANS';
+	    } elsif ($wrong==0 && $right==0) {
+		#nothing submitted
+	    } else {
+		if ($ignored==0) {
+		    $ad='INCORRECT';
+		} else {
+		    $ad='MISSING_ANSWER';
+		}
+	    }
+	    $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
+	    &Apache::response::handle_previous(\%previous,$ad);
 	} else {
-	  if ($ignored==0) {
-	    $ad='INCORRECT';
-	  } else {
-	    $ad='MISSING_ANSWER';
-	  }
+	    my $ad;
+	    if ($wrong==0 && $right==0) {
+		#nothing submitted
+	    } else {
+		$ad='ASSIGNED_SCORE';
+	    }
+	    $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
+	    $Apache::lonhomework::results{"resource.$part.$id.awarded"}=
+		$right/(scalar(@whichopt));
+	    $Apache::lonhomework::results{"resource.$part.$id.numfoils"}=
+		scalar(@whichopt);
 	}
-	$Apache::lonhomework::results{"resource.$part.$id.submission"}=
-	  $responsestr;
-	$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
-	  $ad;
-	&Apache::response::handle_previous(\%previous,$ad);
       }
     }
+    &Apache::lonxml::increment_counter(&getfoilcounts($max));
   } elsif ($target eq 'edit') {
     $result.=&Apache::edit::end_table();
-  }  
-  if ($target eq 'tex') {$result .= '\end{enumerate}';}
+  }
+  if ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') {
+      $result .= '\end{enumerate}';
+  }
   return $result;
 }
 
@@ -237,55 +260,15 @@ sub getfoilcounts {
 }
 
 sub whichfoils {
-  my ($max,$randomize)=@_;
-  $max = &getfoilcounts($max);
-  &Apache::lonxml::debug("randomize $randomize");
-  my @names = @{ $Apache::response::foilgroup{'names'} };
-  my @whichopt =();
-  my (%top,@toplist,%bottom,@bottomlist);
-  if (!(&Apache::response::showallfoils() || ($randomize eq 'no'))) {
-      my $current=0;
-      foreach my $name (@names) {
-	  $current++;
-	  if ($Apache::response::foilgroup{$name.'.location'} eq 'top') {
-	      $top{$name}=$current;
-	  } elsif ($Apache::response::foilgroup{$name.'.location'} eq
-		   'bottom') {
-	      $bottom{$name}=$current;
-	  }
-      }
-  }
-  while ((($#whichopt+1) < $max) && ($#names > -1)) {
-    &Apache::lonxml::debug("Have $#whichopt max is $max");
-    my $aopt;
-    if (&Apache::response::showallfoils() || ($randomize eq 'no')) {
-      $aopt=0;
-    } else {
-      $aopt=int(&Math::Random::random_uniform() * ($#names+1));
-    }
-    &Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt");
-    $aopt=splice(@names,$aopt,1);
-    &Apache::lonxml::debug("Picked $aopt");
-    if ($top{$aopt}) {
-	$toplist[$top{$aopt}]=$aopt;
-    } elsif ($bottom{$aopt}) {
-	$bottomlist[$bottom{$aopt}]=$aopt;
-    } else {
-	push (@whichopt,$aopt);
-    }
-  }
-  for (my $i=0;$i<=$#toplist;$i++) {
-      if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) }
-  }
-  for (my $i=0;$i<=$#bottomlist;$i++) {
-      if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
-  }
-
-  return @whichopt;
+    my ($max,$randomize)=@_;
+    return &Apache::response::whichorder($max,$randomize,
+					 &Apache::response::showallfoils(),
+					 \%Apache::response::foilgroup);
 }
 
 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');
@@ -299,36 +282,72 @@ 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;
-  my $result;
+  my $result;  
   my $name;
   my $displayoptionintex=0;
-  my @alphabet = ('A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P',
-		  'Q','R','S','T','U','V','W','X','Y','Z');
+  my @alphabet = ('A'..'Z');
   my @whichopt = &whichfoils($max,$randomize);
   my $part=$Apache::inputtags::part;
   my $id=$Apache::inputtags::response[-1];
-  if (($Apache::lonhomework::history{"resource.$part.solved"} =~ /^correct/)  || ($Apache::inputtags::status[-1] eq  'SHOW_ANSWER')) {
+  my $break;
+  my $solved=$Apache::lonhomework::history{"resource.$part.solved"};
+  if ( ($target ne 'tex') &&
+       &Apache::response::show_answer() ) {
+    my $temp=1;
     foreach $name (@whichopt) {
-      if ($target eq 'web') {
-	  $result.="<br />";
+	my $text=$Apache::response::foilgroup{$name.'.text'};
+	my %lastresponse=&Apache::lonnet::str2hash($Apache::lonhomework::history{"resource.$part.$id.submission"});
+	my $lastopt=$lastresponse{$name};
+	if ($text!~/^\s*$/) {
+	    if ($target eq 'tex') {
+		$break='\vskip 0 mm ';
+	    } elsif ($target eq 'web') {
+		$break='<br />';
+	    }
+	}
+	$result.=$break;
+	if ($target eq 'web') {
+	    my $value=$Apache::response::foilgroup{$name.'.value'};
+	    if (!($text=~s|<drawoptionlist\s*/>|$value|)) {
+		if ($text=~/^\s*$/) {
+		    $text=$value.$text;
+		} else {
+		    $text=$value.': '.$text;
+		}
+	    }
+	    $result.=$text."\n";
       } elsif ($target eq 'tex') {
-	  $result.='\vskip 0 mm ';
-      }
-      if ($target ne 'tex') {
-	  $result .=$Apache::response::foilgroup{$name.'.value'}.
-	      ":".$Apache::response::foilgroup{$name.'.text'}."\n";
-      } else {
- 	  $result .='\item '.$Apache::response::foilgroup{$name.'.value'}.
+	  $Apache::response::foilgroup{$name.'.text'}=~s/\\item//;
+	  if ($max>1) {$result .='\item ';}
+ 	  $result .=' \textit{'.$Apache::response::foilgroup{$name.'.value'}.'}'.
 	      ":".$Apache::response::foilgroup{$name.'.text'}."\n";
       }
+      if ($Apache::lonhomework::type eq 'exam') {
+	if ($target ne 'tex') {
+	  $result.=&webbubbles(\@opt,\@alphabet,$temp,$lastopt);
+        } else {
+	  $result.=&bubbles(\@alphabet,\@opt);
+        }
+      }
+      $temp++;
     }
   } else {
     my $temp=1;
     my %lastresponse=&Apache::lonnet::str2hash($Apache::lonhomework::history{"resource.$part.$id.submission"});
+    my $internal_counter=$Apache::lonxml::counter;
     foreach $name (@whichopt) {
+      my $text=$Apache::response::foilgroup{$name.'.text'};
+      if ($text!~/^\s*$/) {
+	  if ($target eq 'tex') {
+	      $break='\vskip 0 mm ';
+	  } elsif ($target eq 'web') {
+	      $break='<br />';
+	  }
+      }
       my $lastopt=$lastresponse{$name};
       my $optionlist="<option></option>\n";
       my $option;
@@ -340,80 +359,145 @@ sub displayfoils {
 	}
       }
       if ($target ne 'tex') {
-	  $result.="<br /><select name=\"HWVAL_$Apache::inputtags::response['-1']:$temp\">"
-	      .$optionlist
-		  ."</select>\n".$Apache::response::foilgroup{$name.'.text'}."\n";
+	  if ($Apache::lonhomework::type ne 'exam') {
+	    $optionlist='<select name="HWVAL_'.
+	      $Apache::inputtags::response['-1'].':'.$temp.'">'.
+		  $optionlist."</select>\n";
+	  }
+	  my $text=$Apache::response::foilgroup{$name.'.text'};
+	  if (!($text=~s|<drawoptionlist\s*/>|$optionlist|) && $Apache::lonhomework::type ne 'exam') {
+	      $text=$optionlist.$text;
+	  }
+	  $result.=$break.$text."\n";
 	  if ($Apache::lonhomework::type eq 'exam') {
-		  my $number_of_bubbles = $#opt + 1;
-		  $result.= '<table border="1"><tr>';
-		  for (my $ind=0;$ind<$number_of_bubbles;$ind++) {
-		      $result.='<td>'.$alphabet[$ind].': '.$opt[$ind].'</td>';
-		  }
-		  $result.='</tr></table>';
+	    $result.=&webbubbles(\@opt,\@alphabet,$temp,$lastopt);
 	  }
 	  $temp++;
       } else {
+          my $texoptionlist = &optionlist_correction($optionlist);
 	  if ($displayoptionintex == 0) {
-              my $texoptionlist = $optionlist;
-	      $texoptionlist =~ s/<option><\/option>/\\item \[\] The possible answers are:/;
-	      $texoptionlist =~ s/<option>/{\\bf /g;
-	      $texoptionlist =~ s/<option selected="on">/{\\bf /g;
-	      $texoptionlist =~ s/<\/option>/},/g;
-	      $texoptionlist =~ s/,$/\./g;
-	      $texoptionlist =~ s/>/\$>\$/g;
-	      $texoptionlist =~ s/</\$<\$/g;
-	      $texoptionlist =~ s/=/\$=\$/g;
+	      if ($Apache::lonhomework::type eq 'exam') {$texoptionlist='';} #if exam we do not need to show optionlist
 	      if ($Apache::response::foilgroup{$name.'.text'}=~m/\\item /) {
-		  $result.= $texoptionlist.$Apache::response::foilgroup{$name.'.text'};
+		if ($Apache::lonhomework::type eq 'exam') {
+	          $Apache::response::foilgroup{$name.'.text'}=~s/\\item/\\vskip 2 mm/;
+	        }
+	        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'};
 	      } else {
-		  $result.= $texoptionlist.'\item '.$Apache::response::foilgroup{$name.'.text'};
-	      }
 		  if ($Apache::lonhomework::type eq 'exam') {
-		      my $number_of_bubbles = $#opt + 1;
-		      $result.= '\vskip 2 mm \noindent \begin{tabular}{|';
-		      for (my $ind=0;$ind<$number_of_bubbles;$ind++) {
-			  $result.='lr|';
-		      }
-		      $result.='}\hline ';
-		      for (my $ind=0;$ind<$number_of_bubbles;$ind++) {
-			  $result.=' '.$alphabet[$ind].': & '.$opt[$ind].' ';
-			  if ($ind != $number_of_bubbles - 1) {$result.=' & ';}
-		      }
-		      $result.='\\\\\hline\end{tabular}\vskip 0 mm ';
+		      $result.= $texoptionlist.'  '.$Apache::response::foilgroup{$name.'.text'};
+		  } else {
+		      $result.= $texoptionlist.'\vspace*{-2 mm}\item '.$Apache::response::foilgroup{$name.'.text'};
 		  }
+	      }
+	      if ($Apache::lonhomework::type eq 'exam') {
+		  $result.='\vskip -2 mm\parbox{\textwidth}{\begin{enumerate}\item[\textbf{'.$internal_counter.'}.]\parbox{\textwidth - 5 mm}{'.&bubbles(\@alphabet,\@opt).'}\end{enumerate}} \vskip -9 mm \strut ';
+		  $internal_counter++;
+	      }
 	      $displayoptionintex=1;
 	  } else {
 	      if ($Apache::response::foilgroup{$name.'.text'}=~m/\\item /) {
-		  $result.= $Apache::response::foilgroup{$name.'.text'};
+		  if ($Apache::lonhomework::type eq 'exam') {
+		      $Apache::response::foilgroup{$name.'.text'}=~s/\\item//;
+		  }
+	        if ($Apache::response::foilgroup{$name.'.text'}=~/<drawoptionlist\s*\/>/) {
+	          $Apache::response::foilgroup{$name.'.text'}=~s|<drawoptionlist\s*/>| \\makebox\[0\.3in\]\[b\]\{\\hrulefill\} |;
+	        }
+		$result.= $Apache::response::foilgroup{$name.'.text'};
 	      } else {
-		  $result.= '\item '.$Apache::response::foilgroup{$name.'.text'};
-	      }
 		  if ($Apache::lonhomework::type eq 'exam') {
-		      my $number_of_bubbles = $#opt + 1;
-		      $result.= '\vskip 2 mm \noindent \begin{tabular}{|';
-		      for (my $ind=0;$ind<$number_of_bubbles;$ind++) {
-			  $result.='lr|';
-		      }
-		      $result.='}\hline ';
-		      for (my $ind=0;$ind<$number_of_bubbles;$ind++) {
-			  $result.=' '.$alphabet[$ind].': & '.$opt[$ind].' ';
-			  if ($ind != $number_of_bubbles - 1) {$result.=' & ';}
-		      }
-		      $result.='\\\\\hline\end{tabular}\vskip 0 mm ';
+		      $result.= '  '.$Apache::response::foilgroup{$name.'.text'};
+		  } else {
+		      $result.= '\item '.$Apache::response::foilgroup{$name.'.text'};
 		  }
+	      }
+	      if ($Apache::lonhomework::type eq 'exam') {
+		  $result.='\vskip -2 mm \parbox{\textwidth}{\begin{enumerate}\item[\textbf{'.$internal_counter.'}.]\parbox{\textwidth - 5 mm}{'.&bubbles(\@alphabet,\@opt).'}\end{enumerate}} \vskip -9 mm \strut ';
+		  $internal_counter++;
+	      }
 	  }
-      } 
+      }
     }
-  } 
-  if ($target ne 'tex') {
-      return $result."<br />";
   }
-  else {
+  if ($target ne 'tex') {
+      return $result.$break;
+  } else {
       return $result;
   }
 }
 
 
+sub optionlist_correction {
+
+    my $texoptionlist = shift;
+    if ($texoptionlist=~/<option selected/ or $texoptionlist=~/<option>[^<]+<\/option>/) {
+	$texoptionlist =~ s/<option><\/option>/\\item \[\] Choices: /;
+	$texoptionlist =~ s/<option>/\{\\bf /g;
+	$texoptionlist =~ s/<option selected="on">/\{\\bf /g;
+	$texoptionlist =~ s/<\/option>/\},/g;
+	$texoptionlist =~ s/,$/\./g;
+	$texoptionlist =~ s/>/\$>\$/g;
+	$texoptionlist =~ s/</\$<\$/g;
+	$texoptionlist =~ s/=/\$=\$/g;
+	$texoptionlist =~ s/\^(\d+)/<m>\$$1\$<\/m>/g;
+    } else {
+	$texoptionlist =~ s/<option><\/option>/\\item \[\] \\vskip -5 mm/;
+    }
+    return $texoptionlist;
+}
+
+
+sub webbubbles {
+
+    my ($ropt,$ralphabet,$temp,$lastopt)=@_;
+    my @opt=@$ropt; 
+    my @alphabet=@$ralphabet;
+    my $result='';
+    my $number_of_bubbles = $#opt + 1;
+    $result.= '<table border="1"><tr>';
+    for (my $ind=0;$ind<$number_of_bubbles;$ind++) {
+	my $checked='';
+	if ($lastopt eq $opt[$ind]) {
+	    $checked=' checked="on" ';
+	}
+	$result.='<td><input type="radio" name="HWVAL_'.
+	    $Apache::inputtags::response['-1'].':'.$temp.
+	    '" value="'.$opt[$ind].'" '.$checked.' />'.$alphabet[$ind].': '.
+	    $opt[$ind].'</td>';
+    }
+    $result.='</tr></table>';
+    return $result;
+}
+
+
+sub bubbles {
+
+    my ($ralphabit,$ropt) = @_;
+    my @alphabet = @$ralphabit;
+    my @opt = @$ropt;
+    my ($result,$head,$line) =('','','');
+    my $number_of_bubbles = $#opt + 1;
+    my $current_length = 0;
+    for (my $ind=0;$ind<=$number_of_bubbles;$ind++) {
+	$current_length += (length($opt[$ind])+length($alphabet[$ind])+2)*2;
+	if ($current_length<0.9*$ENV{'form.textwidth'} and $ind!=$number_of_bubbles) {
+	    $line.='\hskip -1 mm {\small \textbf{'.$alphabet[$ind].'}}$\bigcirc$\hskip -1 mm & \hskip -3 mm {\small '.$opt[$ind].'} & ';
+	    $head.='lr';
+	} else {
+	    $line=~s/\&\s*$//;
+	    $result.='\vskip -5 mm\begin{tabular}{'.$head.'}\\\\'.$line.'\\\\\end{tabular}';
+	    $line = '\hskip -1 mm {\small \textbf{'.$alphabet[$ind].'}}$\bigcirc$\hskip -1 mm & \hskip -3 mm {\small '.$opt[$ind].'} & ';;
+	    $head ='lr';
+	    $current_length = (length($opt[$ind])+length($alphabet[$ind]))*2;
+	}
+
+    }
+    return $result;
+}
+
+
 sub start_conceptgroup {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   $Apache::optionresponse::conceptgroup=1;
@@ -435,41 +519,13 @@ sub end_conceptgroup {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   $Apache::optionresponse::conceptgroup=0;
   my $result='';
-  if ($target eq 'web' || $target eq 'grade' || $target eq 'answer'
-      || $target eq 'tex' || $target eq 'analyze') {
+  if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
+      $target eq 'tex' || $target eq 'analyze') {
     #if not there aren't any foils to display and thus no question
-    if (defined(@{ $Apache::response::conceptgroup{'names'} })) {
-      my @names = @{ $Apache::response::conceptgroup{'names'} };
-      my $pick=int(&Math::Random::random_uniform() * ($#names+1));
-      my $name=$names[$pick];
-      push @{ $Apache::response::foilgroup{'names'} }, $name;
-      $Apache::response::foilgroup{"$name.value"} =
-	$Apache::response::conceptgroup{"$name.value"};
-      $Apache::response::foilgroup{"$name.text"} =
-	$Apache::response::conceptgroup{"$name.text"};
-      $Apache::response::foilgroup{"$name.location"} =
-	$Apache::response::conceptgroup{"$name.location"};
-      my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
-      $Apache::response::foilgroup{"$name.concept"} = $concept;
-      &Apache::lonxml::debug("Selecting $name in $concept");
-      if ($target eq 'analyze') {
-	my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
-        push (@{ $Apache::lonhomework::analyze{"$part_id.concepts"} },
-	      $concept);
-	$Apache::lonhomework::analyze{"$part_id.concept.$concept"}=
-	  $Apache::response::conceptgroup{'names'};
-	foreach my $name (@{ $Apache::response::conceptgroup{'names'} }) {
-	  push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },
-		$name);
-	  $Apache::lonhomework::analyze{"$part_id.foil.value.$name"} =
-	    $Apache::response::conceptgroup{"$name.value"};
-	  $Apache::lonhomework::analyze{"$part_id.foil.text.$name"} =
-	    $Apache::response::conceptgroup{"$name.text"};
-	  $Apache::lonhomework::analyze{"$part_id.foil.location.$name"} =
-	    $Apache::response::conceptgroup{"$name.location"};
-	}
-      }
-    }
+      &Apache::response::pick_foil_for_concept($target,
+					       ['value','text','location'],
+					       \%Apache::hint::option,
+					       $parstack,$safeeval);
   } elsif ($target eq 'edit') {
     $result=&Apache::edit::end_table();
   }
@@ -514,9 +570,9 @@ sub end_foil {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   my $text ='';
   my $result = '';
-  if ($target eq 'web' || $target eq 'tex') { 
+  if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') { 
       $text=&Apache::lonxml::endredirection;
-      if ($target eq 'tex') { $text = '\item '.$text; }
+      if ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') { $text = '\vspace*{-2 mm}\item '.$text; }
   }
   if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' 
       || $target eq 'tex' || $target eq 'analyze') {
@@ -531,12 +587,20 @@ sub end_foil {
 	   && !&Apache::response::showallfoils() ) {
 	push @{ $Apache::response::conceptgroup{'names'} }, $name;
 	$Apache::response::conceptgroup{"$name.value"} = $value;
-	$Apache::response::conceptgroup{"$name.text"} = $text;
+	if ($target eq 'tex' and $Apache::lonhomework::type eq 'exam') {
+	    $Apache::response::conceptgroup{"$name.text"} = '\vskip 4 mm $\triangleright$ '.$text;
+	} else {
+	    $Apache::response::conceptgroup{"$name.text"} = $text;
+	}
 	$Apache::response::conceptgroup{"$name.location"} = $location;
       } else {
 	push @{ $Apache::response::foilgroup{'names'} }, $name;
 	$Apache::response::foilgroup{"$name.value"} = $value;
-	$Apache::response::foilgroup{"$name.text"} = $text;
+	if ($target eq 'tex' and $Apache::lonhomework::type eq 'exam') {
+	    $Apache::response::foilgroup{"$name.text"} = '\vskip 5 mm $\triangleright$ '.$text;
+	} else {
+	    $Apache::response::foilgroup{"$name.text"} = $text;
+	}
 	$Apache::response::foilgroup{"$name.location"} = $location;
       }
     }