--- loncom/homework/inputtags.pm	2004/03/13 00:36:11	1.136
+++ loncom/homework/inputtags.pm	2004/03/31 05:23:59	1.138
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # input  definitons
 #
-# $Id: inputtags.pm,v 1.136 2004/03/13 00:36:11 albertel Exp $
+# $Id: inputtags.pm,v 1.138 2004/03/31 05:23:59 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -118,7 +118,7 @@ sub start_textfield {
 	$Apache::lonxml::evaluate--;
 	if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
 	    my $partid=$Apache::inputtags::part;
-	    my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$resid.submission"});
+	    my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$resid.submission"},'<>&"');
 	    my $cols = &Apache::lonxml::get_param('cols',$parstack,$safeeval);
 	    if ( $cols eq '') { $cols = 80; }
 	    my $rows = &Apache::lonxml::get_param('rows',$parstack,$safeeval);
@@ -210,7 +210,7 @@ sub start_textline {
 	    if ($size eq '') { $size=20; } else {
 		if ($size < 20) { $maxlength=$size; }
 	    }
-	    my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$id.submission"});
+	    my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$id.submission"},'<>&"');
 	    if ($Apache::lonhomework::type ne 'exam') {
 		my $addchars=&Apache::lonxml::get_param('addchars',$parstack,$safeeval);
 		$result='';
@@ -257,7 +257,7 @@ sub start_hiddenline {
 	if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
 	    my $partid=$Apache::inputtags::part;
 	    my $id=$Apache::inputtags::response[-1];
-	    my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$id.submission"});
+	    my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$id.submission"},'<>&"');
 	    if ($Apache::lonhomework::type ne 'exam') {
 		$result= '<input type="hidden" name="HWVAL_'.$id.'" value="'.
 		    $oldresponse.'" />';
@@ -305,7 +305,9 @@ sub finalizeawards {
     }
     if (defined($result)) { return ($result,$msg); }
     foreach my $possibleaward ('MISSING_ANSWER', 'ERROR', 'NO_RESPONSE',
-			       'TOO_LONG', 'UNIT_FAIL', 'NO_UNIT',
+			       'TOO_LONG', 'UNIT_INVALID_INSTRUCTOR',
+			       'UNIT_INVALID_STUDENT', 'UNIT_IRRECONCIBLE',
+			       'UNIT_FAIL', 'NO_UNIT',
 			       'UNIT_NOTNEEDED', 'WANTED_NUMERIC',
 			       'BAD_FORMULA', 'SIG_FAIL', 'INCORRECT', 
 			       'MISORDERED_RANK', 'INVALID_FILETYPE',
@@ -413,7 +415,18 @@ sub decideoutput {
 	$message = &mt("Significant figures are incorrect, you provided [_1] significant figures while [_2] to [_3] were expected. Submission not graded.",(split(/:/,$awardmsg)));
 	$bgcolor=$possiblecolors{'not_charged_try'};
 	$button=1;
-    } elsif ($award eq 'UNIT_FAIL') {
+    } elsif ($award eq 'UNIT_INVALID_INSTRUCTOR') {
+	$message = &mt('Error in instructor specifed unit. This error has been reported to the instructor.', $awardmsg);
+	if ($target ne 'tex') {$message.=&Apache::loncommon::help_open_topic('Physical_Units');} 
+	$bgcolor=$possiblecolors{'not_charged_try'};
+	$button=1;
+    } elsif ($award eq 'UNIT_INVALID_STUDENT') {
+	$message = &mt('Unable to interpret units. Computer reads units as "[_1]"',
+		       $awardmsg);
+	if ($target ne 'tex') {$message.=&Apache::loncommon::help_open_topic('Physical_Units');} 
+	$bgcolor=$possiblecolors{'not_charged_try'};
+	$button=1;
+    } elsif ($award eq 'UNIT_FAIL' || $award eq 'UNIT_IRRECONCIBLE') {
 	$message = &mt('Units incorrect. Computer reads units as "[_1]"',
 		       $awardmsg);
 	if ($target ne 'tex') {$message.=&Apache::loncommon::help_open_topic('Physical_Units');}