use Mojo::Util;
my $str = '<foo>bar<baz>&"';
my $res1 = Mojo::Util::html_unescape($str);

my %ENTITIES = (lt => '<<<', gt => '>>>');

Mojo::Util::monkey_patch 'Mojo::Util', _entity => \&_entity2;

my $res2 = Mojo::Util::html_unescape($str);

print "res1: $res1\n";
print "res2: $res2\n";


sub _entity2 {
  my ($point, $name, $attr) = @_;

  print "_entity2 called...\n";

  # Code point
  return chr($point !~ /^x/ ? $point : hex $point) unless defined $name;
  # Named character reference
  my $rest = my $last = '';
  while (length $name) {
    return $ENTITIES{$name} . reverse $rest
      if exists $ENTITIES{$name} && (!$attr || $name =~ /;$/ || $last !~ /[A-Za-z0-9=]/);
    $rest .= $last = chop $name;
  }
  return '&' . reverse $rest;
}