PPI::Normal has the intention, in the long run, of normalizing Perl in such a way that functionally equivalent code will present the same DOM tree.

Okay...maybe I'm missing something, but isn't that nigh impossible? Consider these two very simple functions:

sub alpha
{
   foreach(1..10) {
      print;
   }
}
sub beta
{
   for(my $i=10; $i>=1; $i--) {
      print 11 - $i;
   }
}
[download]

Both do the exact same thing, albeit in different ways. I'd be interested to see some sort of automated solution that reduces both to the same thing at any level.