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Mon, 18 Jan 2021 09:40:15 -0800 (PST) MIME-Version: 1.0 References: <0102017716203d60-ea3cd78f-867c-4f6e-b37b-583ccdb44c13-000000@eu-west-1.amazonses.com> <1219668732.3070481.1610987664058@mail2.virginmedia.com> In-Reply-To: <1219668732.3070481.1610987664058@mail2.virginmedia.com> From: Bart Schaefer Date: Mon, 18 Jan 2021 09:40:04 -0800 Message-ID: Subject: Re: Bug with assignments in some commands To: Peter Stephenson Cc: Patrick Reader , "zsh-workers@zsh.org" Content-Type: text/plain; charset="UTF-8" X-Seq: 47846 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: To expand on what PWS wrote: echo "$((x++)), x is $x" | cat echo "${x::=2}, x is $x" | cat Those are both obvious subshells, forked to the left. POSIX actually says that ALL commands in a pipeline are to be subshells, but allows exceptions. cat <<<"$((x++))" cat <