From: Bart Schaefer <schaefer@brasslantern.com>
To: zsh-workers@zsh.org
Subject: Re: Bug: reading from tty inside process substitution
Date: Sun, 12 Nov 2023 13:50:58 -0800 [thread overview]
Message-ID: <CAH+w=7YhKay_8PuWn+JaJAbfVtQb_-HU8=m71Z_w6wOw=rQknw@mail.gmail.com> (raw)
In-Reply-To: <CAH+w=7ZztRXt7R9fDK=yb1=fcvjwjiUGo98j73BgBG7NzWE+iw@mail.gmail.com>
On Sun, Nov 12, 2023 at 10:09 AM Bart Schaefer
<schaefer@brasslantern.com> wrote:
>
> I doubt there's any easy way to change this without breaking something else.
This is even worse:
read foo < <(read bar; echo $bar) </dev/tty
With MULTIOS, that command becomes un-killable, because "read foo"
sees a pipeline consisting of a catenation of both the process
substitution and the tty, but the process substitution is perpetually
TTIN'd and the interactive shell is ignoring interrupts. Without
MULTIOS, the command substitution simply becomes a stopped zombie and
"read foo" sees only /dev/tty. Without the </dev/tty, it gets stuck
but interrupt is possible, leaving behind a zombie.
next prev parent reply other threads:[~2023-11-12 21:51 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-12 15:59 Mark J. Reed
2023-11-12 18:09 ` Bart Schaefer
2023-11-12 21:50 ` Bart Schaefer [this message]
2023-11-15 3:33 ` Bart Schaefer
2023-11-15 4:42 ` Bart Schaefer
2023-11-15 5:00 ` Bart Schaefer
2023-11-16 4:58 ` Bart Schaefer
2023-11-17 1:27 ` [PATCH] reading from large or "infinite" source in multio Bart Schaefer
2023-11-18 23:24 ` Bart Schaefer
2023-11-16 2:35 ` [PATCH] reading from tty inside process substitution Bart Schaefer
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