Unfortunately Tie::STDERR won't do what's needed.   There's this note in the POD:
However, if you run external command (system, ``), stderr output from that process won't be caught.   It is because we tie Perl's STDERR fileglob, not the external filehandle.
(grumble - sounded wonderful tho)

In reply to Re: Re: Best Way to Redirect STDERR to a Scalar by shenme
in thread Best Way to Redirect STDERR to a Scalar by Mr. Muskrat

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