function _nestingTag($match, $state, $pos, $name)
{
switch ($state) {
case DOKU_LEXER_ENTER:
$this->_addCall($name . '_open', array(), $pos);
break;
case DOKU_LEXER_EXIT:
$this->_addCall($name . '_close', array(), $pos);
break;
case DOKU_LEXER_UNMATCHED:
$this->_addCall('cdata', array($match), $pos);
break;
}
}