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,T_SCC_BODY_TEXT_LINE, UNPARSEABLE_RELAY autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 20484 invoked from network); 13 Mar 2022 20:58:18 -0000 Received: from zero.zsh.org (2a02:898:31:0:48:4558:7a:7368) by inbox.vuxu.org with ESMTPUTF8; 13 Mar 2022 20:58:18 -0000 ARC-Seal: i=1; cv=none; a=rsa-sha256; d=zsh.org; s=rsa-20210803; t=1647205098; b=aE1zUgWgh7YtuRoWznSuLinGD3nZPJZVWGe0/V3+QKUkfs6tSjsfO45lDEfBZYCrw5UJUuWhVP cL8dCg2fXtrw+y0W+U7J71Z9GctZpAiAYM2rUNHd9Uf05XSJhusrdWG1S9y3brHx9fPmx6Ho/x I3B8R3ABToLBwQUy8CEZdF0Vdmw1z6SDLK2CAuWfnH+iJ7PSFvbNawoaVweNedwKReRVxYAiIs MGo7+biN19RIS1kTA4BAhkszt2gZifY2jklQfrLUqytItwzLkrieX7rDMp0DfdC82vDM00CE7L yqYe4KxjAob1h7jZaVZH8rh1nt7jJUeOm8Grxa8hI4qRJw==; ARC-Authentication-Results: i=1; zsh.org; iprev=pass (mail-yb1-f180.google.com) smtp.remote-ip=209.85.219.180; dkim=pass header.d=brasslantern-com.20210112.gappssmtp.com header.s=20210112 header.a=rsa-sha256; dmarc=none header.from=brasslantern.com; arc=none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed; d=zsh.org; s=rsa-20210803; t=1647205098; bh=BpIc0uz0wLr7g+ZjZfI74MHa9gDQSShDy/dDM8owzkE=; h=List-Archive:List-Owner:List-Post:List-Unsubscribe:List-Subscribe:List-Help: List-Id:Sender:Content-Type:Cc:To:Subject:Message-ID:Date:From:In-Reply-To: References:MIME-Version:DKIM-Signature:DKIM-Signature; b=hURtcvgs4PUkVgNr3yOiqMP7AaxQhc1f5k6XBsxF6/yKSnfrIiqTOeva9lfLCRY0hY+lbkfdnR qw7I/sDdARa6t2j9GllRh4nXpDxTikn3BXdpLGYzWicM61EQKEc+N2yALFhYe82tstfCT5jx4P NaaW1yoTAd5Os9k7uaEl+bWvSvOlJ1snKk+J4g7x2a+WZM4hVvHGV11KHbg1pJQ7F5+xzB//73 ZKMuEn7910XSsZicdJAPsfIkE/A2AIRgetFDET4Kkf7Q3ZR91ceCFXIS6HCZJxdEKW8lCP7YEx QUX+useTdj/FrWYVHvZJlIbUmhj4m4wSTKhduHdLWX1P2A==; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=zsh.org; s=rsa-20210803; h=List-Archive:List-Owner:List-Post:List-Unsubscribe: List-Subscribe:List-Help:List-Id:Sender:Content-Type:Cc:To:Subject:Message-ID :Date:From:In-Reply-To:References:MIME-Version:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID; bh=G23kktqgJh6p6cq3QyAFAHuG/OUrHAEThx3QrL8bdfw=; b=ND7VIUJaeOiydk5KtLFO/5N5Jg EziQ2kxhy/vQyPOlbe2TKwv6ujmoEqsVmn7AK0yy9P+IOzDS08dxi1WoPQ3MywXgHZpAbr0QJtdO8 Hak7k8ydZKH8eNGssNdleru+AT/AnT1ZDNZEQUV4GbPJccBry32as0Xix9tGZJSwXOddDMJABt6gl e/FcEDKS1Hxd22AHhMoNGNtGjpEB8Viqtr2Cv0P6WPSQJaNDPCoz6JUCcZRtvrR9VqroH5T/2/x1H 853oHbbXN3OifZNX47M9XqV5ERCYdQ6PG1ne9hA3eFSdDhwotQ3HF4D2cqa6obcno+tO7G5gX+Edy 20iShb2A==; Received: from authenticated user by zero.zsh.org with local id 1nTVI9-000Dtn-CN; Sun, 13 Mar 2022 20:58:17 +0000 Authentication-Results: zsh.org; iprev=pass (mail-yb1-f180.google.com) smtp.remote-ip=209.85.219.180; dkim=pass header.d=brasslantern-com.20210112.gappssmtp.com header.s=20210112 header.a=rsa-sha256; dmarc=none header.from=brasslantern.com; arc=none Received: from mail-yb1-f180.google.com ([209.85.219.180]:37434) by zero.zsh.org with esmtps (TLS1.3:TLS_AES_128_GCM_SHA256:128) id 1nTVHs-000DZ7-78; Sun, 13 Mar 2022 20:58:00 +0000 Received: by mail-yb1-f180.google.com with SMTP id g1so27161551ybe.4 for ; Sun, 13 Mar 2022 13:57:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=brasslantern-com.20210112.gappssmtp.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=G23kktqgJh6p6cq3QyAFAHuG/OUrHAEThx3QrL8bdfw=; b=VaB1fVP3+eLranrR4l1iKSYp/bNp7Hi5Go5rZqnTKIt2KnuJKd6+pq+y4MPzGfO87F 96FsUmmjbY8nJ3HX5nCWaJ3kF29t7Id08KQrEG9f1cNY92z4tsZMsNgd5fA7T1jp6LKi D6eswoV0dnznj1/shDv9z5azO0ktTbFFn004Z3/QKUgR3Go7x/vyTdTaWoNNFHI+d3Wy R6Di0NZVKjr4XLTMD8wHcoa63y/2av2dPIuGDRdqPpegroq5NWbDJ1SMEHYWh3xSyswd H6kKPeE43dYFH7AoI6mCz717zNIR53rN6i4iY5lOOst0Rw7mJjsWu7vJWwRDKbbej/ah pjKg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=G23kktqgJh6p6cq3QyAFAHuG/OUrHAEThx3QrL8bdfw=; b=crkvqkEx9gfF7JJan+BPcuysy1HF/c2y94XfZx1/Q82v/KZu7Z3AWv+nsOuYw+OJpQ vDJ+4PpmRiK4gD3iCXNve2ThdRjwvUQKCLoqAXJwtoVcPbWZxXPzZ1CBxyPZhVKI9Ymn 1G/o+UytoW7F8g8dWWOWvQL0wd9GFrdXbXSDKTSMM27sNio4dj0xHhMyvlc9qosbLeRa J9smZqP5uyWelGlHGb/+Gqjc86Oz2RYm0g2PsJVqv0HY9K5hH7cH57wEG9K5UvB2Ij+R 0ls1Z37ac5Ypu57ksi9b09B0IckrIU1yBf46/T1xThYtJVW7R/ryqHwfbLH3PlImGLtn 4DlA== X-Gm-Message-State: AOAM531DKtGZOtbQM6ta0fsnqK4syJURZE7zxOBm85G74gxt1Mb5Addk PDNVq92FOG2mC2W3D1+vAE3qryZbVdVhHVb0I/eIpQ== X-Google-Smtp-Source: ABdhPJzsbK0qq4iK/7B3/OFRyu4BASLx10xM5ZFQPjcY8FI5SFWB0NLn1DhTDlzgWpb2FttI6U5ZQJg0OLnEIToVT40= X-Received: by 2002:a25:be8b:0:b0:61a:6cf9:7ea6 with SMTP id i11-20020a25be8b000000b0061a6cf97ea6mr15977649ybk.309.1647205078823; Sun, 13 Mar 2022 13:57:58 -0700 (PDT) MIME-Version: 1.0 References: <20220310075026.ovwlhxq24cmda5s3@chazelas.org> <7694652.296620.1646922350773@mail2.virginmedia.com> In-Reply-To: From: Bart Schaefer Date: Sun, 13 Mar 2022 13:57:47 -0700 Message-ID: Subject: Re: "${*:offset:length}" and ksh93/bash compatibility To: Mikael Magnusson Cc: Peter Stephenson , Zsh hackers list Content-Type: text/plain; charset="UTF-8" X-Seq: 49840 Archived-At: X-Loop: zsh-workers@zsh.org Errors-To: zsh-workers-owner@zsh.org Precedence: list Precedence: bulk Sender: zsh-workers-request@zsh.org X-no-archive: yes List-Id: List-Help: List-Subscribe: List-Unsubscribe: List-Post: List-Owner: List-Archive: On Sun, Mar 13, 2022 at 12:23 PM Mikael Magnusson wrote: > > The way it works in bash is it does become a scalar, but the subscript > works on the array elements before joining (just like [1,3] does in > zsh in the same context). Ah, OK. You're thinking of "${a[*][1,3]}" and I'm thinking of "${${a[*]}[1,3]}". Empirically, :off:len is (currently) implemented as the latter rather than as the former. > I also just took a look > at getindex() and don't want to replicate the appropriate parts of > that logic (which would require understanding what any of the parts > do). Indeed.