[racket] adding other objects to custodian

On Jul  4, Matthew Flatt wrote:
> [...]
> 
>  * A subprocess can create any number of sub-subprocesses itself, and
>    there's no way to kill those, which isn't very custodian-like.

Isn't a process group the way to solve this?

-- 
          ((lambda (x) (x x)) (lambda (x) (x x)))          Eli Barzilay:
                    http://barzilay.org/                   Maze is Life!