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From: Bart Schaefer <schaefer@brasslantern.com>
Message-id: <120308065332.ZM14313@torch.brasslantern.com>
Date: Thu, 08 Mar 2012 06:53:32 -0800
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 <CADdV=MthDr4RZhO1pUni9qW5S2j1H_xu7iQOBTAs=vP84Gei8Q@mail.gmail.com>
Comments: In reply to Nikolai Weibull <now@bitwi.se>
 "Re: Is it possible to capture stdout and stderr to separate variables in
 Zsh?" (Mar  7, 10:26am)
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To: Zsh Users <zsh-users@zsh.org>
Subject: Re: Is it possible to capture stdout and stderr to separate variables
 in Zsh?
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On Mar 7, 10:26am, Nikolai Weibull wrote:
}
} outs=("${(@0):-"$({ out=$(x) } 2>&1; print $'\0'$out$'\0'$status)"}")

That's nice.  You can solve the problem that Philippe mentioned with
loss of trailing newlines, by embedding one NUL in $out like so:

outs=("${(@0):-"$({ out="$(x; print -n $'\0')" } 2>&1;
                    print $'\0'$out$status)"}")

Then I sort of like the idea of making it into an associative array:

typeset -A outs
outs=(STDERR "${(@0):-"$({ out="$(x; print -n $'\0')" } 2>&1;
                    print $'\0'STDOUT$'\0'${out}STATUS$'\0'$status)"}")
print -r $outs[STDOUT]