protected function _doAbbreviations_callback($matches)
{
$abbr = $matches[0];
if (isset($this->abbr_desciptions[$abbr])) {
$desc = $this->abbr_desciptions[$abbr];
if (empty($desc)) {
return $this->hashPart("<abbr>{$abbr}</abbr>");
} else {
$desc = $this->encodeAttribute($desc);
return $this->hashPart("<abbr title=\"{$desc}\">{$abbr}</abbr>");
}
} else {
return $matches[0];
}
}