--- loncom/homework/grades.pm	2007/10/17 09:40:49	1.460
+++ loncom/homework/grades.pm	2007/10/24 09:51:47	1.462
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # The LON-CAPA Grading handler
 #
-# $Id: grades.pm,v 1.460 2007/10/17 09:40:49 foxr Exp $
+# $Id: grades.pm,v 1.462 2007/10/24 09:51:47 foxr Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -91,7 +91,7 @@ sub get_response_bubbles {
     my $selected = "";
 
     for (my $bline = 0; $bline < $bubble_lines; $bline++) {
-	$selected .= $$parsed_line{"scantron.$bubble_line.answer"};
+	$selected .= $$parsed_line{"scantron.$bubble_line.answer"}.":";
 	$bubble_line++;
     }
     return $selected;
@@ -5312,7 +5312,7 @@ sub scantron_parse_scanline {
 		    if ($bubble =~ /\d/) {
 			$record{"scantron.$ansnum.answer"} = $alphabet[$bubble];
 		    } else {
-			$record{"scantron.$ansnum.answer"}='';
+			$record{"scantron.$ansnum.answer"}=' ';
 		    }
 		    $ansnum++;
 		}
@@ -5383,20 +5383,22 @@ sub scantron_parse_scanline {
 
 		my $first_answer = $ansnum;
 		for (my $ans =0; $ans < $answers_needed; $ans++) {
-		    $record{"scantron.$ansnum.answer"} = '';
-		    $ans++;
+		    my $item = $first_answer+$ans;
+		    $record{"scantron.$item.answer"} = '';
 		}
 
 		my @ans=@array;
-		my $i=length($ans[0]);shift(@ans);
+		my $i=0;
+		my $increment = 0;
 		while ($#ans) {
-		    $i+=length($ans[0])+1;
-		    my $line   = $i/$$scantron_config{'Qlength'} + $first_answer;
+		    $i+=length($ans[0]) + $increment;
+		    my $line   = int($i/$$scantron_config{'Qlength'} + $first_answer);
 		    my $bubble = $i%$$scantron_config{'Qlength'};
-
 		    $record{"scantron.$line.answer"}.=$alphabet[$bubble];
 		    shift(@ans);
+		    $increment = 1;
 		}
+		$ansnum += $answers_needed;
 	    }
 	}
     }
@@ -6432,7 +6434,7 @@ ENDSCRIPT
 	$r->print("<p>Please indicate which bubble should be used for grading</p>");
 	foreach my $question (@{$arg}) {
 	    my $selected  = &get_response_bubbles($scan_record, $question);
-	    my @select_array = split('',$selected);
+	    my @select_array = split(/:/,$selected);
 	    &scantron_bubble_selector($r,$scan_config,$question,
 				      @select_array);
 	}
@@ -6465,17 +6467,18 @@ ENDSCRIPT
     $r           - Apache request object
     $scan_config - hash from &get_scantron_config()
     $quest       - number of the bubble line to make a corrector for
-    $selected    - array of letters of previously selected bubbles
+    $lines       - array of answer lines.
 
 =cut
 
 sub scantron_bubble_selector {
-    my ($r,$scan_config,$quest,@selected)=@_;
+    my ($r,$scan_config,$quest,@lines)=@_;
     my $max=$$scan_config{'Qlength'};
 
+
     my $scmode=$$scan_config{'Qon'};
 
-    my $bubble_length = scalar(@selected);
+    my $bubble_length = scalar(@lines);
 
 
     if ($scmode eq 'number' || $scmode eq 'letter') { $max=10; }	     
@@ -6491,7 +6494,7 @@ sub scantron_bubble_selector {
 	if ($l != 0) {
 	    $r->print('<tr>');
 	}
-
+	my @selected = split(//,$lines[$l]);
 	for (my $i=0;$i<$max;$i++) {
 	    $r->print("\n".'<td align="center">');
 	    if ($selected[0] eq $alphabet[$i]) {