http://www.perlmonks.org?node_id=1048937


in reply to Re^2: Is there a problem with IPC::Open on Windows 7?
in thread Is there a problem with IPC::Open on Windows 7?

The design isn't broken either. It's perfectly simple and makes sense. 

open(\*IN, \*OUT, \*ERR, ...)  # Get three pipes back
open(\*IN, \*OUT, undef, ...)  # Get two pipes back,
                               #   one catches both STDOUT and STDERR

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It's using lexicals that causes problems. This module predates lexicals.

In Section Seekers of Perl Wisdom