[WWcvs] pg: During substitution, remove cached values that could change

[dpvc v. a. <we...@ma...>]

Log Message:
-----------
During substitution, remove cached values that could change

Modified Files:
--------------
    pg/lib:
        Parser.pm

Revision Data
-------------
Index: Parser.pm
===================================================================
RCS file: /webwork/cvs/system/pg/lib/Parser.pm,v
retrieving revision 1.54
retrieving revision 1.55
diff -Llib/Parser.pm -Llib/Parser.pm -u -r1.54 -r1.55
--- lib/Parser.pm
+++ lib/Parser.pm
@@ -662,7 +662,8 @@
   foreach my $x (keys %{$self->{values}}) {delete $self->{variables}{$x}}
   $self->{tree} = $self->{tree}->substitute;
   $self->unsetValues;
-  delete $self->{f};
+  foreach my $id ("test_values","test_adapt","string","f",
+                  "stack","ref","tokens","space","domainMismatch") {delete $self->{$id}}
   return $self;
 }