Trackback title format bungs up HTML entities

[offline]

When tracking back to one of my own entries, I noticed the following:

I get a text string as a title that looks like this as the final output:

Offlingblog &raquo; Blog Archive &raquo; <title>

What's happening is the leading ampersand in the raquo; entity is being converted to an &amp; entity before tracking back, which is probably not the desired behaviour.

[MC_incubus]

The same happens for PingBack titles. I've been trying to create a regex that would fix this... we need to look for &amp; followed by X chars and ";"

[MC_incubus]

This fixes it... although it's a bandaid solution:

function clean_amp_chars($text){
$search = "/&amp;([a-zA-Z0-9#]{3,10});/i";
$replace = "&$1;";
$text = preg_replace($search, $replace, $text);
return $text;
}
add_filter('comment_author', 'clean_amp_chars', 100);
add_filter('comment_text', 'clean_amp_chars', 100);