>> It's easy to un-dirty that hack, but before I'd like to see your
>> comments about thoughts above.
>
> Yeah, please revert that hack.
Done. Also, I changed void *extra_data to Pointer extra_data and corresponding
**extra_data and ***extra_data to simplify understanding.
--
Teodor Sigaev E-mail: teodor@sigaev.ru
WWW: http://www.sigaev.ru/