PHP highlighting stops if ?> is used in code

Sample from ganon library (ganon.php):


function parse_php() {
$start = $this->pos;
if ($this->next_pos('?>', false) !== self::TOK_UNKNOWN) {
$this->pos -= 2;
}
$len = $this->pos - 1 - $start;
$this->status['text'] = (($len > 0) ? substr($this->doc, $start + 1, $len) : '');
$this->status['last_pos'] = ++$this->pos;
return true;
}


Highlighting stops at line 3 ...

The multihighlighter uses regular expressions to detect start and end of included scripting. Nobody send me regular expression what can solve all situations and possibilities with PHP end of the script. If you can send me it, I will fix it.