possible bug in zsh - stderr not redirected if unsatisfied wildcard

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From: Ross Boulet <rossb@xxxxxxxxx>

To: "zsh-workers@xxxxxxx" <zsh-workers@xxxxxxx>

Subject: possible bug in zsh - stderr not redirected if unsatisfied wildcard

Date: Mon, 7 Apr 2025 23:03:38 +0000

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Thread-topic: possible bug in zsh - stderr not redirected if unsatisfied wildcard

I believe I have found a bug in zsh. If the command contains an unmatched wildcard, the error message does not get redirected as it should.

Cinsider the following interaction:

cartman2% mkdir mydir

cartman2% cd mydir

cartman2% touch a b

cartman2% ls ? >stdout1 2>stderr1

cartman2% ls -1

stderr1

stdout1

All above is expected behavior

cartman2% ls ?? >stdout2 2>stderr2

zsh: no matches found: ?? ß error not redirected, stdout2 and stderr2 not created

cartman2% ls -1

stderr1

stdout1

cartman2%

Ross Boulet

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