--- loncom/xml/lonxml.pm	2004/10/05 18:51:50	1.339
+++ loncom/xml/lonxml.pm	2004/10/05 20:18:29	1.341
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # XML Parser Module 
 #
-# $Id: lonxml.pm,v 1.339 2004/10/05 18:51:50 albertel Exp $
+# $Id: lonxml.pm,v 1.341 2004/10/05 20:18:29 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -824,9 +824,12 @@ sub increasedepth {
   if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
     $Apache::lonxml::olddepth=$Apache::lonxml::depth;
   }
-  push(@timers,[&gettimeofday()]);
-  my $time=&tv_interval($lasttime);
-  $lasttime=[&gettimeofday()];
+  my $time;
+  if ($Apache::lonxml::debug eq "1") {
+      push(@timers,[&gettimeofday()]);
+      $time=&tv_interval($lasttime);
+      $lasttime=[&gettimeofday()];
+  }
   my $spacing='  'x($Apache::lonxml::depth-1);
   my $curdepth=join('_',@Apache::lonxml::depthcounter);
   &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : \n");
@@ -844,9 +847,12 @@ sub decreasedepth {
     &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
     $Apache::lonxml::depth='-1';
   }
-  my $timer=pop(@timers);
-  my $time=&tv_interval($lasttime);
-  $lasttime=[&gettimeofday()];
+  my ($timer,$time);
+  if ($Apache::lonxml::debug eq "1") {
+      $timer=pop(@timers);
+      $time=&tv_interval($lasttime);
+      $lasttime=[&gettimeofday()];
+  }
   my $spacing='  'x$Apache::lonxml::depth;
   my $curdepth=join('_',@Apache::lonxml::depthcounter);
   &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : ".&tv_interval($timer)."\n");
@@ -1022,6 +1028,7 @@ sub parstring {
     unless ($_=~/\W/) {
       my $val=$token->[2]->{$_};
       $val =~ s/([\%\@\\\"\'])/\\$1/g;
+      $val =~ s/^(\$\d)/\\$1/;
       #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
       $temp .= "my \$$_=\"$val\";";
     }
@@ -1471,7 +1478,7 @@ sub get_param_var {
   } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; }
   my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
   &Apache::lonxml::debug("first run is $value");
-  if ($value =~ /^[\$\@\%]\w+$/) {
+  if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
       &Apache::lonxml::debug("doing second");
       my @result=&Apache::run::run("return $value",$safeeval,1);
       if (!defined($result[0])) {