use strict;
use warnings;
use Data::Dump qw/pp dd/;

my $data= join "", <DATA>;

use XML::Twig;

$\="\n";

print "=== HANDLER:\n";

my $twig=XML::Twig->new(
  twig_handlers => 
      {
          'field[@name="doctext"]' => sub {
              print $_->gi,"Post: ",$_->child_text(0)
          },
          'author' => sub {
              print "ID: ",   $_->att("id");
              print "Name: ", $_->child_trimmed_text(0);
          },
      },
);  

$twig->parse($data);


print "=== SIMPLIFIED:\n";
$twig=XML::Twig->new();
print pp $twig->parse( $data)->simplify(); 


__DATA__
<?xml version="1.0" encoding="Windows-1252"?>
<node id="11100665" title="Re^5: What does $_ = qq~&quot;$_&quot;~ do?" created="2019-05-28 16:28:57" updated="2019-05-28 16:28:57">
<type id="11">
note</type>
<author id="830549">
haukex</author>
<data>
<field name="doctext">
&lt;p&gt;More fun facts! I once wrote a script to search a word list for words that make valid regexen which convert one valid word into another.&lt;/p&gt;
&lt;c&gt;
$ perl -le 'print bangs =~s engender'
bands
$ perl -le 'print halved =~s avatar'
halted
$ perl -le 'print stove =~s evener'
stone
&lt;/c&gt;
</field>
<field name="root_node">
11100593</field>
<field name="parent_node">
11100640</field>
<field name="reputation">
21</field>
</data>
</node>