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From: Pier Paolo Grassi <pierpaolog@gmail.com>
To: Zsh-Users List <zsh-users@zsh.org>
Subject: suspended (tty output)
Date: Sun, 24 Oct 2021 02:53:40 +0200	[thread overview]
Message-ID: <CAP+y1xDdZa1CYvW0LM7hJ8emCQ6ruLxN6qQ9UFi=BqT_Ta-2fw@mail.gmail.com> (raw)

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hello, I have something like this:

function_that_use_ffmpeg | while read line; do ... done

It appears that ffmpeg access the tty directly, for example when asking for
interactive input

in this case, the process got suspended with the message suspended (tty
output)
if I pipe it to cat, it is not suspended
If it convert the second part of the pipe to a subshell:

function_that_use_ffmpeg | (while read line; do ... done)

it is not suspended.
If I disable job control with setopt nomonitor, it is not suspended.
I wonder why the subshell changes the behaviour, and if I can solve this
problem without using this hack and without disabling job control

thanks

Pier Paolo Grassi

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                 reply	other threads:[~2021-10-24  0:55 UTC|newest]

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