Uncaught exception from user code:
        calling depth after parsing is finished at /opt/perl-5.8.6/lib/site_perl/5.8.6/i686-linux/XML/Parser/Expat.pm line 474
 at /opt/perl-5.8.6/lib/site_perl/5.8.6/i686-linux/XML/Parser.pm line 192
        XML::Parser::parse('XML::Twig=HASH(0x81ec750)', '<node id="17"><content>foo bar</content><child file="19.xml" ...') called at 486497.pl line 9

##</code><code>##

sub onChild
{
   my ($t, $child) = @_;
   my $atts = $child->atts;
   XML::Twig->new( twig_handlers => { child => \&onChild } ) 
     ->parsefile($atts->{file});
}