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Sun, 26 Mar 2023 10:23:22 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Roman Perepelitsa Date: Sun, 26 Mar 2023 19:23:10 +0200 Message-ID: Subject: Re: strange interaction between read command and pipe to less from function To: linuxtechguy@gmail.com Cc: zsh Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Seq: 28986 Archived-At: X-Loop: zsh-users@zsh.org Errors-To: zsh-users-owner@zsh.org Precedence: list Precedence: bulk Sender: zsh-users-request@zsh.org X-no-archive: yes List-Id: List-Help: , List-Subscribe: , List-Unsubscribe: , List-Post: List-Owner: List-Archive: On Sun, Mar 26, 2023 at 7:04=E2=80=AFPM Jim wrot= e: > > Now I'm totally confused. A bit by your answer and the word 'simultaneou= sly' > as I thought the function would run first then less. When you run `cvt_256_colors_2_rgb_hex_fmt | less`, two processes run simultaneously. One is executing `cvt_256_colors_2_rgb_hex_fmt`, the other is executing `less`. > I hope you are not as confused as I am. I am not. When two commands simultaneously write and read the same TTY, anything goes. By adding something to the function you've changed the timings, so now the race condition manifests differently. Roman.