--- loncom/interface/spreadsheet/assesscalc.pm	2005/05/17 18:01:58	1.48
+++ loncom/interface/spreadsheet/assesscalc.pm	2005/10/12 21:29:49	1.51
@@ -1,5 +1,5 @@
 #
-# $Id: assesscalc.pm,v 1.48 2005/05/17 18:01:58 albertel Exp $
+# $Id: assesscalc.pm,v 1.51 2005/10/12 21:29:49 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -703,15 +703,17 @@ sub parameter_part_is_valid {
         return 1;
     }
     #
-    my (undef,$part) = 
-        ($parameter =~ m/^(resource|stores|parameter)_([^_]+)_.*/);
-    if (exists($self->{'Parts'})          && 
-        exists($self->{'Parts'}->{$part}) &&
-        $self->{'Parts'}->{$part} ) {
-        return 1;
-    } else {
-        return 0;
+    my ($start,@pieces)=split('_',$parameter);
+    if ( $start !~ m/^(resource|stores|parameter)$/) { return 0; }
+    while (@pieces) {
+        pop(@pieces);
+        my $testpart=join('_',@pieces);
+	if (exists($self->{'Parts'}->{$testpart}) &&
+	    $self->{'Parts'}->{$testpart} ) {
+	    return 1;
+	}
     }
+    return 0;
 }
 
 sub compute {
@@ -786,9 +788,15 @@ sub compute {
         if ($parm =~ /_submission$/ && $value =~ /(\{|\})/) {
             $value = 'witheld';
         }
-        #$value = 'q{'.$value.'}' if ($value =~/([^\d\.]|\.\.)/);
+        $value = 'q{'.$value.'}' if ($value =~/([^\d\.]|\.\.)/);
         $c{$parm} = $value;
     }
+    foreach my $cell (grep(/^A/,keys(%f))) {
+        # Clean out any bad formulas
+	next if (exists($c{$f{$cell}}));
+	next if ($cell eq 'A0');
+	delete($f{$cell});
+    }
     $self->formulas(\%f);
     $self->constants(\%c);
     $self->calcsheet();
@@ -837,7 +845,7 @@ sub sett {
 		&& $self->{'constants'}->{$formula} ne ''
 		) {
 		$Apache::Spreadsheet::sheet_values{$cell}=
-		    $self->{'constants'}->{$formula};
+		    eval($self->{'constants'}->{$formula});
             }
         } else {
             $t{$cell}=$formula;