From: Bart Schaefer <schaefer@brasslantern.com>
To: Zsh Users <zsh-users@zsh.org>
Subject: Re: less with subprocess
Date: Wed, 29 Sep 2021 07:14:23 -0700 [thread overview]
Message-ID: <CAH+w=7an7ATJ51o-67ztFX+ShfEbrf158+Xi7OPtrm0X82vSbg@mail.gmail.com> (raw)
In-Reply-To: <20210929130217.GB25513@cventin.lip.ens-lyon.fr>
On Wed, Sep 29, 2021 at 6:02 AM Vincent Lefevre <vincent@vinc17.net> wrote:
>
> cventin% LF () { () { cat >$1 &! less $1 ; kill $! } =(:) }
> cventin% echo | LF
> (anon):kill: kill 27684 failed: no such process
Yeah, if you use it with a process that produces very little output,
the kill will fail. But there's no point in using it in that case.
Redirect stderr of kill if this bothers you.
> And
>
> cventin% (sleep 1; echo foo) | LF
>
> gives an empty file in "less"
Yes, you have to hit "F" in less to reload / wait for the file
contents. I suppose "less +F" might be preferable. There are still
some signal handling issues with having a subshell on the left side of
the pipe, which might very well indicate that there is still a zsh (or
"less"?) bug with signal propagation.
next prev parent reply other threads:[~2021-09-29 14:15 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-27 20:30 Pier Paolo Grassi
2021-09-27 20:46 ` Roman Perepelitsa
2021-09-27 21:38 ` Bart Schaefer
2021-09-27 21:48 ` Bart Schaefer
2021-09-27 22:57 ` Pier Paolo Grassi
2021-09-27 23:05 ` Bart Schaefer
2021-09-27 23:28 ` Pier Paolo Grassi
2021-09-27 23:31 ` Dominik Vogt
2021-09-28 0:41 ` Bart Schaefer
2021-09-28 0:53 ` Bart Schaefer
2021-09-28 18:52 ` Dominik Vogt
2021-09-28 19:29 ` Bart Schaefer
2021-09-29 13:02 ` Vincent Lefevre
2021-09-29 13:13 ` Pier Paolo Grassi
2021-09-29 13:26 ` Vincent Lefevre
2021-09-29 14:14 ` Bart Schaefer [this message]
2021-09-29 14:47 ` Pier Paolo Grassi
2021-09-29 17:56 ` Bart Schaefer
2021-09-30 19:22 ` Vincent Lefevre
2021-10-01 16:44 ` Bart Schaefer
2021-10-03 1:45 ` Vincent Lefevre
2021-10-03 21:41 ` Bart Schaefer
2021-09-30 19:17 ` Vincent Lefevre
2021-09-30 19:48 ` Dominik Vogt
2021-09-30 20:59 ` Pier Paolo Grassi
2021-09-30 21:03 ` Pier Paolo Grassi
2021-09-30 22:39 ` Bart Schaefer
2021-09-30 22:46 ` Pier Paolo Grassi
2021-09-30 23:46 ` Dominik Vogt
2021-10-01 0:04 ` Pier Paolo Grassi
2021-10-01 0:06 ` Pier Paolo Grassi
2021-10-01 0:31 ` Dominik Vogt
2021-10-01 1:32 ` Pier Paolo Grassi
2021-10-01 0:17 ` Dominik Vogt
2021-10-01 2:47 ` Vincent Lefevre
2021-09-29 12:51 ` Vincent Lefevre
2021-09-28 19:50 ` Pier Paolo Grassi
2021-09-27 21:38 ` Dominik Vogt
2021-09-27 22:35 ` Dominik Vogt
2021-09-27 23:03 ` Bart Schaefer
2021-09-29 12:24 ` Vincent Lefevre
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