static function indent($s, $level = 1, $chars = "\t")
{
if ($level >= 1) {
$s = NString::replace($s, '#<(textarea|pre).*?</\\1#si', callback(create_function('$m', '
return strtr($m[0], " \\t\\r\\n", "\\x1F\\x1E\\x1D\\x1A");
')));
$s = NString::indent($s, $level, $chars);
$s = strtr($s, " ", " \t\r\n");
}
return $s;
}
