From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=DKIM_ADSP_CUSTOM_MED, FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.2 Received: (qmail 13521 invoked from network); 29 Mar 2020 17:35:07 -0000 Received-SPF: pass (primenet.com.au: domain of zsh.org designates 203.24.36.2 as permitted sender) receiver=inbox.vuxu.org; client-ip=203.24.36.2 envelope-from= Received: from ns1.primenet.com.au (HELO primenet.com.au) (203.24.36.2) by inbox.vuxu.org with UTF8ESMTPZ; 29 Mar 2020 17:35:07 -0000 Received: (qmail 27304 invoked by alias); 29 Mar 2020 17:34:56 -0000 Mailing-List: contact zsh-users-help@zsh.org; run by ezmlm Precedence: bulk X-No-Archive: yes List-Id: Zsh Users List List-Post: List-Help: List-Unsubscribe: X-Seq: 24732 Received: (qmail 24293 invoked by uid 1010); 29 Mar 2020 17:34:56 -0000 X-Qmail-Scanner-Diagnostics: from mail-il1-f177.google.com by f.primenet.com.au (envelope-from , uid 7791) with qmail-scanner-2.11 (clamdscan: 0.102.2/25765. spamassassin: 3.4.2. Clear:RC:0(209.85.166.177):SA:0(-2.0/5.0):. Processed in 1.731234 secs); 29 Mar 2020 17:34:55 -0000 X-Envelope-From: roman.perepelitsa@gmail.com X-Qmail-Scanner-Mime-Attachments: | X-Qmail-Scanner-Zip-Files: | Received-SPF: pass (ns1.primenet.com.au: SPF record at _netblocks.google.com designates 209.85.166.177 as permitted sender) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=7kIJMyF3ufRmrO/4xXEnfp/a3cqdm4aTlY7D/kvUJUE=; b=JZbu0iT4la1VvXLYpshD30DQo33yJIRaz3voRNIs9G9fsSXzTSFEnjWSArgHwEEFAq SdUI0A+e42Yqedz7jLNfEG/PlMJphAJrb0+X2tBNEBvv1Y2xm01+XjjBIDSn/DePNlzO YcsE60sQr+zKSEABgkPVxJtU//aMxnEvYJnyyUnHn1C81TQksKenbPZHMSSIbld4lO9e ukvO2s/hTitBOq7l4YqyOnS4hSLEXxkrUQOdYXkmukFweZWk/XjG9iZUXz0s5RGlrr9u wN7QG4x5DFhHplFjsweL1zH8WkY/U1ZaqQSzZH5ZV7HAGeDo5gqI9GERJ8u0f5Sxran2 IrDw== X-Gm-Message-State: ANhLgQ1/n0Ggv5PXKhi0NWQ8b+4jXrWYBnPxPLCXL0jqF4lFw2khs45i qhRC2q0flbnYGGeTpoyyuWCdTkzCfYkMwjnhqJiNtg== X-Google-Smtp-Source: ADFU+vt1kfB2ud/6AZupINruxSmcWsRGe4R9sTkm0hmpIKdnfkelRB4FdO7pbxInAkmjXsvjlcRM9QRLR+5zfVBaBxM= X-Received: by 2002:a92:c00a:: with SMTP id q10mr7919597ild.151.1585503261108; Sun, 29 Mar 2020 10:34:21 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Roman Perepelitsa Date: Sun, 29 Mar 2020 19:34:08 +0200 Message-ID: Subject: Re: Unexpected behavior with pipe_fail and err_return To: Mikael Magnusson Cc: Zsh Users Content-Type: text/plain; charset="UTF-8" On Sun, Mar 29, 2020 at 7:29 PM Mikael Magnusson wrote: > On 3/28/20, Roman Perepelitsa wrote: > > () { > > emulate -L zsh -o pipe_fail -o err_return > > false | while false; do; done > > echo $? > > } > > > > This prints "1". Is this expected? I was hoping for no output. > > FWIW, you can do this as a workaround > [...] I added `|| return` at the end. Works just as well and doesn't fork. Is this behavior expected? I thought err_return should trigger everywhere except for conditions under `if` and `while` and rhs of `||` and `&&`. Are there additional rules that I'm missing? Roman.