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Sat, 3 Apr 2021 11:50:27 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface User-Agent: Cyrus-JMAP/3.5.0-alpha0-273-g8500d2492d-fm-20210323.002-g8500d249 Mime-Version: 1.0 Message-Id: <1151a721-b9d5-48ca-9247-7ea5ba6aa206@www.fastmail.com> In-Reply-To: References: <20210104002213.2703305-1-sandals@crustytoothpaste.net> <20210104002213.2703305-2-sandals@crustytoothpaste.net> Date: Sat, 03 Apr 2021 11:49:16 -0400 From: =?UTF-8?Q?Lawrence_Vel=C3=A1zquez?= To: zsh-workers@zsh.org Subject: =?UTF-8?Q?Re:_[PATCH_v3_1/1]_exec:_run_final_pipeline_command_in_a_subsh?= =?UTF-8?Q?ell_in_sh_mode?= Content-Type: text/plain;charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Seq: 48385 Archived-At: X-Loop: zsh-workers@zsh.org Errors-To: zsh-workers-owner@zsh.org Precedence: list Precedence: bulk Sender: zsh-workers-request@zsh.org X-no-archive: yes List-Id: List-Help: List-Subscribe: List-Unsubscribe: List-Post: List-Owner: List-Archive: Archived-At: On Sat, Mar 27, 2021, at 3:34 PM, Lawrence Vel=C3=A1zquez 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 i= n a > > pipeline run in a subshell, but permits zsh's behavior as an extensi= on. > > The default /bin/sh implementations on various Linux distros and the= > > BSDs always use a subshell for all components of a pipeline. > >=20 > > Since zsh may be used as /bin/sh in some cases (such as macOS Catali= na), > > 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 a= nd > > creating a subshell in that case. >=20 > ping for review Ping: 2.0 You Can (Not) Review vq