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Mon, 07 Nov 2022 16:44:15 -0800 (PST) MIME-Version: 1.0 References: <2FE96386-2D04-434F-AD2F-F08356B1AE04@kba.biglobe.ne.jp> <7BB37CE7-16A2-4079-956B-802E3FB4DC82@kba.biglobe.ne.jp> <0A744179-81FA-4405-857D-6FFBE8F8FA1E@kba.biglobe.ne.jp> In-Reply-To: From: Bart Schaefer Date: Mon, 7 Nov 2022 16:44:03 -0800 Message-ID: Subject: Re: [PATCH] problem with 'ls | less' shell function To: Jun T Cc: zsh-workers@zsh.org Content-Type: text/plain; charset="UTF-8" X-Seq: 50907 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: On Mon, Nov 7, 2022 at 11:33 AM Bart Schaefer wrote: > > > [2] { sleep 10; sleep 11; } | { sleep 20; sleep 21; } [...] > Hmm. If I examine "pstree" I find: > > zsh(43919)---zsh(43978)---sleep(43980) > > 43978 is your "zsh2" and is busy-waiting with 100% CPU at OK, this just gets weirder. There are different results depending on whether you hit ^Z during the first "sleep 10", during the second "sleep 11", or during "sleep 21". There are also different results if you change it to { sleep 5; sleep 6; } | { sleep 20; sleep 21; } and hit ^Z during "sleep 20". So some of what I said in workers/50901 doesn't always apply, though the location of the busy-loop is always the same.