From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-3.3 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,UNPARSEABLE_RELAY autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 19136 invoked from network); 11 Jun 2021 20:04:29 -0000 Received: from zero.zsh.org (2a02:898:31:0:48:4558:7a:7368) by inbox.vuxu.org with ESMTPUTF8; 11 Jun 2021 20:04:29 -0000 ARC-Seal: i=1; cv=none; a=rsa-sha256; d=zsh.org; s=rsa-20200801; t=1623441869; b=NKgjdPnD2oLoS6USyYN59g//fGdbP1d0WUibQMyOLbB/1AJAn39R0lJSMD9Gm+iCu2RxPHLmW6 OvyroufM4pB1mnhkHo+zMAdZFZjNSGjIvfZGG8KyCrGyU44G9VFXXJ7A9NPZ6TQvH7l6UuXRBS n5Bn0qC23RY3pS/9s9afh97NzZkne+wsgXBcsxKn6CI1ckmxdiZQYtkZtV2w94xHpN6sw2qKPe h7nu3AmUssTFumLUn0ctAi/Dla5BfEi4V0Im31LfVhyiHCP7G4XDg+bPzckXbpHQIEuE1kSzUF pNX7A1iFvwb+O0/UJBj/JP/e+G9vRIKZWa0zxGPRI7+GUg==; ARC-Authentication-Results: i=1; zsh.org; iprev=pass (relay8-d.mail.gandi.net) smtp.remote-ip=217.70.183.201; dmarc=none header.from=chazelas.org; arc=none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed; d=zsh.org; s=rsa-20200801; t=1623441869; bh=Le77T3UsqMbO0iMXth35NYAz0B8Q6ZBufVI8q1N2M9E=; h=List-Archive:List-Owner:List-Post:List-Unsubscribe:List-Subscribe:List-Help: List-Id:Sender:In-Reply-To:Content-Type:MIME-Version:References:Message-ID: Subject:To:From:Date:DKIM-Signature; b=hAgHXqxRtE3MHU9NryVI4AajnVcrub9Qk0d0kewDjTCE93Ds5vbOeXwdjcP+Fn98Y3Kpwe5CTJ nsUvafCswj5MV9a8+icAS5aX4wjZZ+pBiFgHJoK1woa+/iRUAyWgtLthZ4OLZ3MoyfwiwQkRnJ W56YSHX8FvSQJfwlsewOPtk06Zm0Ox1EUh09OC7CIbMXzo84tVm1XcwVrQ39htiGG31W1io+jN al1hqfNzKTQcwfS6gcreWgnh2Xz0g0Kv9CFMHSJLk1QySayCvbj6yVcyf8MHht0ccbYjheN+Sj sejSZj2ofwY/a8dchRy0So4a1lGC/MQvXexniBOWitACbg==; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=zsh.org; s=rsa-20200801; h=List-Archive:List-Owner:List-Post:List-Unsubscribe: List-Subscribe:List-Help:List-Id:Sender:In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:To:From:Date:Reply-To:Cc: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID; bh=JAH0q0KUr33dzLO+qPzer0fm2EFL18bH8jznz4vwjaY=; b=UUCfObGTpdZZ+9pLCR0HN76HjX XrX39sT9yt6TTcIvu+vl+wBpUfpsUPSgIcVBWUcknZGc5HeIKO97li5cSFCbjBsZDx1enys6+Nv9K F+B35gvH3T09lAnP8cwhQ4N6zFsZyoe+Dx+mZmY5KLYVnAo/dTNm84AUfw56cKh0+HmA0G2sBs6uz GmO+W6NA5D2eNO33qgmkOSHBorRRYciCFKH1tj3sZc+ITtWv+g+9noUNOrY1PNcWp5U5lVm4RXQ3o aTU8MFVc7oiDAXSjmZu2iLF6zP8wedKy8HdqWPI/z5RLkTYq47TZv+bkx+fm1hush6wvtb3EKiuXj bHU6ERvQ==; Received: from authenticated user by zero.zsh.org with local id 1lrnOG-000DJI-Ak; Fri, 11 Jun 2021 20:04:28 +0000 Authentication-Results: zsh.org; iprev=pass (relay8-d.mail.gandi.net) smtp.remote-ip=217.70.183.201; dmarc=none header.from=chazelas.org; arc=none Received: from relay8-d.mail.gandi.net ([217.70.183.201]:59613) by zero.zsh.org with esmtps (TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256) id 1lrnO0-000Czw-CY; Fri, 11 Jun 2021 20:04:12 +0000 Received: (Authenticated sender: stephane@chazelas.org) by relay8-d.mail.gandi.net (Postfix) with ESMTPSA id C1FE61BF205; Fri, 11 Jun 2021 20:04:11 +0000 (UTC) Date: Fri, 11 Jun 2021 21:04:11 +0100 From: Stephane Chazelas To: Zach Riggle , zsh-workers@zsh.org Subject: Re: Where is this =(:) construct documented? Message-ID: <20210611200411.bheljlneq6z3ydsf@chazelas.org> Mail-Followup-To: Zach Riggle , zsh-workers@zsh.org References: <20210611195322.4tnhhppbjpddi2tv@chazelas.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210611195322.4tnhhppbjpddi2tv@chazelas.org> X-Seq: 49061 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: 2021-06-11 20:53:22 +0100, Stephane Chazelas: [...] > info zsh "Process Substitution" [...] For information, searching in info (with / or s or Ctrl+S) these days uses extended regexps. So, to search for =(, you need to search for =\( or toggle regexp matching off first with R. See info info / for details. [...] > That's the third form of process substitution. > > ksh introduced the first two <(...) and >(...) in the 80s. zsh > added that third form in the 90s. Already in ksh86. In ksh86 you could actually also use A (B) in place of A <(B) though it looks like it was removed in later versions. rc also had process substitution with a different syntax IIRC. See also: https://unix.stackexchange.com/questions/49918/when-was-process-substitution-first-introduced/49952#49952 and https://unix.stackexchange.com/questions/181937/how-create-a-temporary-file-in-shell-script/181996#181996 -- Stephane