function Internal_RebuildSmileys() {
$regex = Array("/(?<![\\w])(");
$first = true;
foreach ($this->smileys as $code => $filename) {
if (!$first) $regex[] = "|";
$regex[] = preg_quote("$code", '/');
$first = false;
}
$regex[] = ")(?![\\w])/";
$this->smiley_regex = implode("", $regex);
}