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>

##</code><code>##

=== HANDLER:

ID: 830549
Name: haukex
fieldPost: 
<p>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.</p>
<c>
$ perl -le 'print bangs =~s engender'
bands
$ perl -le 'print halved =~s avatar'
halted
$ perl -le 'print stove =~s evener'
stone
</c>

=== SIMPLIFIED:

{
  author  => { 830549 => { content => "\nhaukex" } },
  created => "2019-05-28 16:28:57",
  data    => {
               field => {
                 doctext     => {
                                  content => "\n<p>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.</p>\n<c>\n\$ perl -le 'print bangs =~s engender'\nbands\n\$ perl -le 'print halved =~s avatar'\nhalted\n\$ perl -le 'print stove =~s evener'\nstone\n</c>\n",
                                },
                 parent_node => { content => "\n11100640" },
                 reputation  => { content => "\n21" },
                 root_node   => { content => "\n11100593" },
               },
             },
  title   => "Re^5: What does \$_ = qq~\"\$_\"~ do?",
  type    => { 11 => { content => "\nnote" } },
  updated => "2019-05-28 16:28:57",
}