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Wed, 09 Nov 2022 22:18:28 -0800 (PST) MIME-Version: 1.0 From: Bart Schaefer Date: Wed, 9 Nov 2022 22:18:18 -0800 Message-ID: Subject: One more pipeline glitch To: Zsh hackers list Content-Type: text/plain; charset="UTF-8" X-Seq: 50930 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: There had to be, right? Consider: { sleep 5; sleep 6 } | { sleep 12; print $? } If this is ^Z'd, "sleep 12" goes into the background and a new shell is spawned (and immediately stopped) to handle "print $?". Upon fg (after workers/50922), "sleep 12" is resumed and the subshell remains stopped. When the sleep finishes, the subshell is foregrounded ... ... and prints 148 (SIGCONT). This is, I guess, OK, but it means that if we instead write { sleep 12 && print $? } then print is not executed because the status of sleep appears to be nonzero. What should we do here?