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Re: Unexpected behaviour when using process substitution with stdout and
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From: |
Andreas Schwab |
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Subject: |
Re: Unexpected behaviour when using process substitution with stdout and stderr |
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Date: |
Sun, 11 Jul 2021 15:26:04 +0200 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) |
On Jul 11 2021, Greg Wooledge wrote:
> You're sending the stderr of generate to a subshell where the stderr()
> function is executed. But the stderr() function writes to stdout.
> Therefore, all of the output from generate is ultimately ending up going
> to the script's stdout, with potentially weird interleaving depending
> on the timing of the two background subshells.
There is no interleaving. The output of stderr is connected to the
current disposition of fd 1 which is redirected to the >(stdout) pipe.
You can either switch the order of redirections, or save the previous
disposition of fd 1 in another fd and redirect the output of stderr
there.
Andreas.
--
Andreas Schwab, schwab@linux-m68k.org
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