From: "Lawrence Velázquez" <vq@larryv.me>
To: zsh-workers@zsh.org
Subject: Re: [PATCH v3 1/1] exec: run final pipeline command in a subshell in sh mode
Date: Sat, 03 Apr 2021 11:49:16 -0400 [thread overview]
Message-ID: <1151a721-b9d5-48ca-9247-7ea5ba6aa206@www.fastmail.com> (raw)
In-Reply-To: <ff2926e2-5756-44e0-b3aa-6055a70020ad@www.fastmail.com>
On Sat, Mar 27, 2021, at 3:34 PM, Lawrence Velázquez wrote:
> On Sun, Jan 3, 2021, at 7:22 PM, brian m. carlson wrote:
> > zsh typically runs the final command in a pipeline in the main shell
> > instead of a subshell. However, POSIX specifies that all commands in a
> > pipeline run in a subshell, but permits zsh's behavior as an extension.
> > The default /bin/sh implementations on various Linux distros and the
> > BSDs always use a subshell for all components of a pipeline.
> >
> > Since zsh may be used as /bin/sh in some cases (such as macOS Catalina),
> > it makes sense to have the common sh behavior when emulating sh, so do
> > that by checking for being the final item of a multi-item pipeline and
> > creating a subshell in that case.
>
> ping for review
Ping: 2.0 You Can (Not) Review
vq
next prev parent reply other threads:[~2021-04-03 15:50 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-04 0:22 [PATCH v3 0/1] Run pipeline command in " brian m. carlson
2021-01-04 0:22 ` [PATCH v3 1/1] exec: run final pipeline command in a " brian m. carlson
2021-03-27 19:34 ` Lawrence Velázquez
2021-04-03 15:49 ` Lawrence Velázquez [this message]
2021-04-10 20:05 ` Lawrence Velázquez
2021-04-10 23:02 ` dana
2021-04-10 23:59 ` brian m. carlson
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