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* John D. Blair:

> I'm not sure I understand... popen() doesn't return a process object, it
> returns a file handle.  Also, I don't see wait() or a process object in
> the lua docs anyplace.  Is it part of an add-on module?  I don't think
> there's any concept of process in ANSI-C, which is what the un-adorned
> lua interpreter targets.

popen() is from POSIX, not ISO C.  pclose() does return the exit
status of the child process.