From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 16011 invoked by alias); 5 Nov 2016 21:57:59 -0000 Mailing-List: contact zsh-workers-help@zsh.org; run by ezmlm Precedence: bulk X-No-Archive: yes List-Id: Zsh Workers List List-Post: List-Help: X-Seq: 39842 Received: (qmail 17349 invoked from network); 5 Nov 2016 21:57:59 -0000 X-Qmail-Scanner-Diagnostics: from mail-vk0-f42.google.com by f.primenet.com.au (envelope-from , uid 7791) with qmail-scanner-2.11 (clamdscan: 0.99.2/21882. spamassassin: 3.4.1. Clear:RC:0(209.85.213.42):SA:0(0.0/5.0):. Processed in 0.580406 secs); 05 Nov 2016 21:57:59 -0000 X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on f.primenet.com.au X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=SPF_PASS,T_DKIM_INVALID autolearn=unavailable autolearn_force=no version=3.4.1 X-Envelope-From: schaefer@brasslantern.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 209.85.213.42 as permitted sender) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=brasslantern-com.20150623.gappssmtp.com; s=20150623; h=from:message-id:date:in-reply-to:comments:references:to:subject :mime-version; bh=TG1/ApZSt72k0CQUyhJtva0ABh1ZMKY96XuqHKZRwmo=; b=VS3rWkC8/Q9DtvVa/E6fNbo0Wb7yPFWrkZYEKGWIjMX+sY1bB4oxvI4za5/yXPL5Gz NItHuopK9tUFXFrV1yhYPL5QCduOLGaGQCit80GmqusROL+whmdaZqhIfxrG3E2YrNyI Gb3sboUC5zsWD/jaDYs5k2dJGWP9Pil26ah8uUF/hb1wZySzbwgxvWdXPTti+FzNBlQS 5/PttMqqm5SZ7iBB5CgpKyMHaVkYZ7AtbV9xVogro9r1ulyrO91IUP9smGhkA4lO61Cr ZOzl7yc3uy7EIqiLmGPOYZvjvfmpLecrS0VTI8mDKZRq6Vhv2s+/U9M2AKqTGTOkU7FS ClgA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:message-id:date:in-reply-to:comments :references:to:subject:mime-version; bh=TG1/ApZSt72k0CQUyhJtva0ABh1ZMKY96XuqHKZRwmo=; b=hrhIgu8BMusFhNKEsmtscjA0PbVcG8neVri/bNlwzON37dQZ5wqoq/ONbC71VZt2yo cHcmE7rfql+1yUrd77u7/XYvUAktjqs96TRch7q2UOKHfaG9FIiMnFFPz1LkYS+Qrcr7 QylGk3qNwU3H1MSvoB+uZfr48d7DkKxD89jbb60/jXzK56N9hzn8rV8HjQzJE5rLT5tE 009hyf5H3pecSWtAxlpsyf/zMgoNGvAIQChoKdUxhOn/O2oXpg0DJGCOR0MAf8LXK5/m 2l2Iw+k92Huq1ogt5yV8nLSTLZjb+JjPBtsTKz0fPBWRD64NZfKGjDPSxp0j3RcTBh8/ AaXQ== X-Gm-Message-State: ABUngvciEamR4+yGoIwqm8TvzHjfPvGOioSR7rxJpK4bmIQ7/XfvGypVxjeSmfwDRfYO7Q== X-Received: by 10.31.96.202 with SMTP id u193mr15761657vkb.53.1478382692668; Sat, 05 Nov 2016 14:51:32 -0700 (PDT) From: Bart Schaefer Message-Id: <161105145204.ZM17422@torch.brasslantern.com> Date: Sat, 5 Nov 2016 14:52:04 -0700 In-Reply-To: <20161105203946.GB11681@fujitsu.shahaf.local2> Comments: In reply to Daniel Shahaf "Re: "invalid arguments" in cpio completion" (Nov 5, 8:39pm) References: <20161103203256.GA13691@lorien.comfychair.org> <20161105203946.GB11681@fujitsu.shahaf.local2> X-Mailer: OpenZMail Classic (0.9.2 24April2005) To: zsh-workers@zsh.org Subject: Re: "invalid arguments" in cpio completion MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii On Nov 5, 8:39pm, Daniel Shahaf wrote: } } Danek Duvall wrote on Thu, Nov 03, 2016 at 13:32:56 -0700: } > } > $ local args } > $ args+=(a b c) } > $ print -l -- "$args[@]" } > } > a } > b } > c } > } } This behaviour is the same in HEAD. That's not new behavior; using array-append on a scalar converts the scalar into a 1-element array before appending to it. The question is whether an empty scalar should be converted into a 1-element array or an empty array. This goes back to the fact that in zsh without posixbuiltins, a declared variable is implicitly set, and therefore its value is the empty string. BTW, in the current HEAD zsh *with* posixbuiltins, attempting to assign an array to an exported scalar will result in an error message *but also* causes the scalar to become set (to empty). I'm not sure what if anything posix compatibility would say about this.