Untested: 
my %allowed = ( u => 1, i => 1, b => 1);
my $text = "";
while ( my $token = $p->get_token ) {
    if($token->is_text) {
        $text .= $token->as_is;
    } elsif($token->is_tag && $allowed{$token->get_tag}) {
        $text .= $token->as_is;
    }
}

[download]
Now you can filter your text in $text, for example like: 
my @match = grep /$lookup/, split /\n/, $text;
print "$_\n" foreach @match;

[download]
There is, of course, the chance that you'll match on the tags now.

In reply to Re: Get HTML::TokeParser::Simple to interpret some tags as text by bart
in thread Get HTML::TokeParser::Simple to interpret some tags as text by jonnyfolk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
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