Have you ever tried to do essentially the same as you would in bash do
to this:

  parentapp <( app 2>&1  )

And found massive road works getting in the way.

Sure, you can always do this style syntax:

  open my $fh, 'someapp --args foo 2>&1 |';

But that's not very nice, because

1. you're relying on a sub-shell to do that for you
2. you have to manually escape everything
3. you can't use list context.

And none of this is very Modern or Nice


This is a Perl module distribution. It should be installed with whichever
tool you use to manage your installation of Perl, e.g. any of

  cpanm .
  cpan  .
  cpanp -i .

Consult http://www.cpan.org/modules/INSTALL.html for further instruction.
Should you wish to install this module manually, the procedure is

  perl Makefile.PL
  make test
  make install


This software is copyright (c) 2017 by Kent Fredric

This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.