I'm somewhat uneasy about having coprocs inaccessible to each other. I can foresee reasonable cases where I'd want a coproc to utilize one or more other coprocs.
In particular, I can see cases where a coproc is written to by one process, and read from by another. Can we at least have the auto-close behaviour be made optional, so that it can be turned off when we want to do something more sophisticated? -Martin
