XML::Twig can prune out all elements which have no text content: 
use warnings;
use strict;
use XML::Twig;

my $str = <<EOF;
<note>
  <to>
    <person>Satan</person>
  </to>
  <from via="postcard" russia="with love">moneypenny</from>
  <heading></heading>
  <body></body>
</note> 
EOF

my $t = XML::Twig->new(
    pretty_print  => 'indented',
    twig_handlers => { _all_ => sub { $_->delete() unless $_->text() }
+ }
);
$t->parse($str);
$t->print();

__END__

<note>
  <to>
    <person>Satan</person>
  </to>
  <from russia="with love" via="postcard">moneypenny</from>
</note>

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In reply to Re: prune xml of empty elements by toolic
in thread prune xml of empty elements by metaperl

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