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=-1.1 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,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 47ed0272 for ; Sat, 9 Nov 2019 08:41:34 +0000 (UTC) Received: (qmail 2845 invoked by alias); 9 Nov 2019 08:41:08 -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: 24415 Received: (qmail 3795 invoked by uid 1010); 9 Nov 2019 08:41:07 -0000 X-Qmail-Scanner-Diagnostics: from mail-ua1-f41.google.com by f.primenet.com.au (envelope-from , uid 7791) with qmail-scanner-2.11 (clamdscan: 0.102.0/25622. spamassassin: 3.4.2. Clear:RC:0(209.85.222.41):SA:0(-2.0/5.0):. Processed in 2.13727 secs); 09 Nov 2019 08:41:07 -0000 X-Envelope-From: sgniazdowski@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 209.85.222.41 as permitted sender) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=9rksqrAZlKCcXngvmSC/K0rOReSWA0lDZSCQrj1JA5w=; b=q/ZrvJQ/bqgmcE3z4qo0HzsnjtuOiHMEnt3O5o3MxTjtZg2OVOlHkhkCYYMR4kc/4r LawBlmtoF02Y0B1G148QSXM1Df1CqnvQURjQN2zxuQNcZkV9J1mKrt6VePS/8ugiABvE +zPpoTnuejvv+3zBizdTUEgY+MyTGMzKXmyqlggRmeSzCxj2Mol7XcbjCH79YqUwqLJQ +OJOTTdyjtJ+XpdnRRn/rfeIwwbYfvmSd3apbm9SnrjKtTjSHlxIi6O3kyRMK9e9wxWY Xuil0sua9WDDNZfSaV+Nw+41JIowIwycbov/AkZ7Uyc5n1QEhqJ5j8enJmK8qn4nVUum Fp6g== 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:content-transfer-encoding; bh=9rksqrAZlKCcXngvmSC/K0rOReSWA0lDZSCQrj1JA5w=; b=RRb6JO5VceYAqEgiW6VIsupcM6p9qcCuqxHMXMN5xpmoM+5N06j4I0bHIAl/M+BlTI MYzBUxlpHj2svVz5BnhsQl3SGWv5GGW6tJARZfv9nRIqwivM6/1t/HbkKg5fkG1q4IHb sLZ/RIIAT8y27eMt7PoeRx/m4HMP/FLu1Te+FSXyydnvj+K/4dBAmTcZZ3gDd1ktKY/Z E1p4SWVKtllvWEhDG5EgVimh+N5iYi3VeCSGflEnP7Q1ze0h70SuJcFQ6nuvF1bj3ZIZ 7+nJ2pUTy8EJcu9me+fS13HP0ydsgtr9ABzvDYqLUKr1IqFdXA3BIbdKYWQZqwMEUwpl 93Qw== X-Gm-Message-State: APjAAAVIRUGvmUI/GtDy7pjiiNuRmkyCloCpxVWz6570SfvrXUVWmmBt 8htsmU02s/8BxNmior2V/fDoaLcEX6MyIoiv7VU= X-Google-Smtp-Source: APXvYqwdwau/lkA7zxPyWxlP5q8GqxtqX+T+4Kez01m8INysKkStj+Nz/ARrII3Cz/Guqy/RQRUzjQT7cEyH6KlSQEw= X-Received: by 2002:ab0:1896:: with SMTP id t22mr9739811uag.82.1573288832842; Sat, 09 Nov 2019 00:40:32 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Sebastian Gniazdowski Date: Sat, 9 Nov 2019 09:40:28 +0100 Message-ID: Subject: Re: What's the reasoning behind z & s returning nular for empty input? To: Roman Perepelitsa Cc: Zsh Users Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Sat, 9 Nov 2019 at 09:22, Roman Perepelitsa wrote: > > On Sat, Nov 9, 2019 at 9:11 AM Sebastian Gniazdowski > wrote: > > Thanks for the analysis. The additional problem is that quoted but > > @-lacking s-flag should still elide the empty elements, as the manual > > states. So this is an intentional exception and I wonder why it has > > been added? > > Here's the passage from zshexpn: Yes, I was also referring to this fragment, however it states that the empty elements should be removed, and even =E2=80=93 that they should be removed more eagerly, so I still wonder why produce a nular for an empty input? --=20 Sebastian Gniazdowski News: https://twitter.com/ZdharmaI IRC: https://kiwiirc.com/client/chat.freenode.net:+6697/#zplugin Blog: http://zdharma.org