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From: Jon Oster <jon.i.oster@gmail.com>
To: zsh-users@zsh.org
Subject: Bug/regression: tt(RANDOM) seed not updating when $RANDOM is used in a pipe
Date: Wed, 28 Jun 2023 22:10:52 +0200	[thread overview]
Message-ID: <25FF68CF-F93D-4745-84D1-A97A5ECCA348@gmail.com> (raw)

In 5.8.1, $RANDOM seems not to update its state when the command $RANDOM
was used in is piped somewhere. For example:

# echo $RANDOM
18163
# echo $RANDOM
23472
# echo $RANDOM
27685
# echo $RANDOM|cat
10178
# echo $RANDOM|cat
10178
# echo $RANDOM
10178
# echo $RANDOM
17862

This is new behaviour since I upgraded from 5.4.2 to 5.8.1. At first I
thought that it might be somehow related to multios, but the result is
the same with multios on or off. So, I did a bisect, and discovered that
faf0035e532cde45528806e7a05ad28a0ab7c0fb[1] is the commit that introduced
this behaviour.

Is this considered a bug? Or is it intended behaviour? Personally, I'd
argue it's a bug. Unfortunately, my C isn't good enough to try to fix and
submit a patch myself, but I tried to make this bug report as helpful as
possible.

[1] https://sourceforge.net/p/zsh/code/ci/faf0035e532cde45528806e7a05ad28a0ab7c0fb/

             reply	other threads:[~2023-06-28 20:11 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-06-28 20:10 Jon Oster [this message]
2023-06-29  2:46 ` Eric Cook
2023-06-29  5:42   ` Bart Schaefer
2023-06-29 14:41     ` Ray Andrews
2023-06-29 14:56     ` Roman Perepelitsa
2023-06-29 17:53       ` Mikael Magnusson
2023-06-29 18:15         ` Roman Perepelitsa
2023-06-29 23:41           ` Bart Schaefer
2023-07-02  7:17 ` Mikael Magnusson
2023-07-02  7:29   ` Roman Perepelitsa

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