autolink_email mangles URL if it contains 'mail'

[dlangille]

When the URL contains 'email', the mailto isn't seeing that it's already in a tag.

% cat test.php
<?php

include('lib_autolink.php');

$html = "http://this.is.link/[email protected]&[email protected]&x=1";

$html = autolink($html,0);

echo $html . "\n";

$html = autolink_email($html);

echo $html . "\n";

The output is:

% php test.php
<a href="http://this.is.link/[email protected]&amp;[email protected]&amp;x=1">this.is.link/[email protected]&amp;[email protected]&amp;x=1</a>
<a href="http://this.is.link/[email protected]&amp;<a href="mailto:[email protected]&amp">[email protected]&amp</a>;x=1"><a href="mailto:this.is.link/[email protected]&amp">this.is.link/[email protected]&amp</a>;<a href="mailto:[email protected]&amp">[email protected]&amp</a>;x=1</a>

When I expected the second line to be the same as the first.