->write("ob_start();\n")
->subcompile($this->getNode('body'))
->write('$data = explode("\n", ob_get_clean());' . "\n")
+ ->write('$data = array_unique($data);' . "\n")
->write('sort($data);' . "\n")
->write('echo ltrim(implode("\n", $data)) . "\n";' . "\n");
}