From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FROM,MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.2 Received: from primenet.com.au (ns1.primenet.com.au [203.24.36.2]) by inbox.vuxu.org (OpenSMTPD) with ESMTP id ca349fdc for ; Wed, 13 Nov 2019 09:53:17 +0000 (UTC) Received: (qmail 567 invoked by alias); 13 Nov 2019 09:53:07 -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: 24420 Received: (qmail 6269 invoked by uid 1010); 13 Nov 2019 09:53:07 -0000 X-Qmail-Scanner-Diagnostics: from mail-qk1-f171.google.com by f.primenet.com.au (envelope-from , uid 7791) with qmail-scanner-2.11 (clamdscan: 0.102.0/25628. spamassassin: 3.4.2. Clear:RC:0(209.85.222.171):SA:0(-2.0/5.0):. Processed in 1.818412 secs); 13 Nov 2019 09:53:07 -0000 X-Envelope-From: oguzismailuysal@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 209.85.222.171 as permitted sender) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=xthRnLnLIHrfi+76h+kv4y3G/z+2RnXUhIIVUmetZUU=; b=IEy7EUaA6iUmALDwq8jumZ0anx9zyJJqXQXurJhbJtyh04xR6boc0Wm72dT9uWNmGm Dyxtn8Ok59RLnI9YO7B/zkBSJLxE8kwDeOSfAAyVNP755CdInXpIlBNTE0iwQQ8gyWrl iHn0hU6y9pc0S8y1yTcoTcWiuUxQPEMCpOkQD7+p11CkabzIUdF9u1cormcAhhxDpXOk hE34CEF3Ex4/3LXw12TjxlRQYpgzXflyjJ5SMu6qIxKG0IZb9T79RnqyhSVKIlp0/5iI I2ct9ve2IB2/TMHRje58+uKYcAZ2Bx4EZDaZfaPfn6moazAdvmR9x4japbiB3pARvPlP g5bQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=xthRnLnLIHrfi+76h+kv4y3G/z+2RnXUhIIVUmetZUU=; b=XiqF2ATREVq9VEb2v+TCNna7u2weJQmAeBovfX7mnTbgZVsb3J+sRqEJ4he+OWjHcb bc/b2KVQiFbM794wXcrXLvEHX7reJc8dg5NLx94/8oh59fTvyPhwoF/QBv7ITZC8LRNt Q873eHzTM5obgfwRIAhSjGdz9SfyWVKtmqW4nSafgoeNEz5b93UWVbJiATCJv0SQ6lPa vwVjFaYMzxey6sO0iGQ0YZJgRv/hSgHsxwAsRb9FtSNN/SVdRyN2rc8MmzaatMq0l2wM 9ZGpQ/Fsf2WgtLU1IfbD8atos1hqb9HqmdzXC8wIRK/i2tqL1mc0vZ+sVGJKwuzlTYEt EuPQ== X-Gm-Message-State: APjAAAWy+B37d061aw0XhOZDFzZpU6ZASYaRj/SFdEzCa3HFd98p9tSJ J7/B76Vlv0yuW3vTfLx7Qq+EjtKnRvzxwRJUkxYT2DTrWLaHaA== X-Google-Smtp-Source: APXvYqysGoX+xZUbEqxyIwIAHRVRww4dkLtpk26CxiFw2X/viX5AdwCx6xAvbkkIpgP0UjRHlURBjco3C+TcLkZs7w4= X-Received: by 2002:a05:620a:13e2:: with SMTP id h2mr1693105qkl.114.1573638751620; Wed, 13 Nov 2019 01:52:31 -0800 (PST) MIME-Version: 1.0 From: =?UTF-8?B?T8SfdXo=?= Date: Wed, 13 Nov 2019 12:52:20 +0300 Message-ID: Subject: substituted command won't inherit stdin in pipeline To: zsh-users@zsh.org Content-Type: multipart/alternative; boundary="000000000000cb9485059737529a" --000000000000cb9485059737529a Content-Type: text/plain; charset="UTF-8" On all sh implementations I have, this command echo foo | echo "$(cat)" prints 'foo', except for zsh, it hangs instead. From that I gather cat doesn't inherit echo's stdin, and it waits for input. This works though echo foo | { echo "$(cat)"; } and it doesn't make any sense, both should work as per the standard if I'm not mistaken. Is this a bug, or documented behavior? --- $ zsh --version zsh 5.4.2 (x86_64-ubuntu-linux-gnu) --000000000000cb9485059737529a--