--- loncom/homework/default_homework.lcpm	2008/03/06 14:04:09	1.132
+++ loncom/homework/default_homework.lcpm	2008/03/06 14:27:43	1.133
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA 
 # used by lonxml::xmlparse() as input variable $safeinit to Apache::run::run()
 #
-# $Id: default_homework.lcpm,v 1.132 2008/03/06 14:04:09 www Exp $
+# $Id: default_homework.lcpm,v 1.133 2008/03/06 14:27:43 www Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -260,13 +260,10 @@ sub caparesponse_check {
 
 sub caparesponse_check_list {
     my $responses=$LONCAPA::CAPAresponse_args{'response'};
-#    &LONCAPA_INTERNAL_DEBUG(" answer is ".
-#			    &LONCAPA_INTERNAL_Dumper($LONCAPA::CAPAresponse_answer).":\n");
-#    &LONCAPA_INTERNAL_DEBUG(" respons is ".
-#			    &LONCAPA_INTERNAL_Dumper($responses).":\n");
     &LONCAPA_INTERNAL_DEBUG("args ".join(':',%LONCAPA::CAPAresponse_args));
     my $type = $LONCAPA::CAPAresponse_args{'type'};
-    &LONCAPA_INTERNAL_DEBUG("Got type :$type:\n");
+    my $answerunit=$LONCAPA::CAPAresponse_args{'unit'};
+    &LONCAPA_INTERNAL_DEBUG("Got type :$type: answer unit :$answerunit:\n");
     
     my $num_input_lines =
 	scalar(@{$LONCAPA::CAPAresponse_answer->{'answers'}});
@@ -291,8 +288,6 @@ sub caparesponse_check_list {
 	    $responses->[$which]=[$responses->[$which]];
 	}
     }
-#    &LONCAPA_INTERNAL_DEBUG(" parsed response is ".
-#			    &LONCAPA_INTERNAL_Dumper($responses).":\n");
     foreach my $which (0..($num_input_lines-1)) {
 	my $answer_size = 
 	    scalar(@{$LONCAPA::CAPAresponse_answer->{'answers'}[$which]});
@@ -319,19 +314,20 @@ sub caparesponse_check_list {
     }
     &LONCAPA_INTERNAL_DEBUG("Final final response :$responses->[0][-1]:$unit:");
     $unit=~s/\s//;
-    if ($unit ne '') {
-	foreach my $response (@$responses) {
-	    foreach my $element (@$response) {	
-                $element =~ s/\s//g;
-                my $appendunit=$unit;
-                if ($unit=~/\%/) {
-                   $element=$element/100;
-                   $appendunit=~s/\%//;
-                }    
-		$element .= " $appendunit";
-                &LONCAPA_INTERNAL_DEBUG("Made response element :$element:");
-	    }
-	}
+    foreach my $response (@$responses) {
+       foreach my $element (@$response) {	
+          $element =~ s/\s//g;
+          my $appendunit=$unit;
+          if ($unit=~/\%/) {
+             $element=$element/100;
+             $appendunit=~s/\%//;
+          }    
+          if (($element==0) && ($unit!~/\w/) && ($answerunit=~/\w/)) {
+             $appendunit=$answerunit;
+          }
+          $element .= " $appendunit";
+          &LONCAPA_INTERNAL_DEBUG("Made response element :$element:");
+       }
     }
     
     foreach my $thisanswer (@{ $LONCAPA::CAPAresponse_answer->{'answers'} }) {