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----- Original Message -----
From: John D. Blair
Date: 6/8/2009 1:40 PM
On Sat, 2009-06-06 at 08:06 -0600, Joshua Jensen wrote:
The process exit code is the return value from the process object's 
wait() function:

exitcode = proc:wait()
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.
I was responding to Steve Donovan's message about lua-ex.  See