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dmarc=pass header.from=ntlworld.com; arc=none Received: from smtpq1.tb.ukmail.iss.as9143.net ([212.54.57.96]:59692) by zero.zsh.org with esmtps (TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256) id 1nSgLQ-00048M-PT; Fri, 11 Mar 2022 14:34:17 +0000 Received: from [212.54.57.82] (helo=smtp3.tb.ukmail.iss.as9143.net) by smtpq1.tb.ukmail.iss.as9143.net with esmtp (Exim 4.90_1) (envelope-from ) id 1nSgLQ-0002Nj-1m for zsh-users@zsh.org; Fri, 11 Mar 2022 15:34:16 +0100 Received: from oxbe3.tb.ukmail.iss.as9143.net ([172.25.160.134]) by smtp3.tb.ukmail.iss.as9143.net with ESMTP id SgLPnc67yl7D1SgLQnxdOJ; Fri, 11 Mar 2022 15:34:16 +0100 X-Env-Mailfrom: p.w.stephenson@ntlworld.com X-Env-Rcptto: zsh-users@zsh.org X-SourceIP: 172.25.160.134 X-CNFS-Analysis: v=2.4 cv=Xo7phHJ9 c=1 sm=1 tr=0 ts=622b5de8 cx=a_exe a=rX2mKgs1IZJU9lF6pltyEQ==:117 a=I_Av47A-8eYA:10 a=IkcTkHD0fZMA:10 a=vinPr5In5y8A:10 a=22Ro6XbQAAAA:8 a=A9XP-AoG9lH_LA4Q6mUA:9 a=QEXdDO2ut3YA:10 a=p1RiBf0vZFgkX3Jmbd9N:22 X-Authenticated-Sender: p.w.stephenson@ntlworld.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ntlworld.com; s=meg.feb2017; t=1647009256; bh=4CQuTDEL1wTkk7dw9urW0zjEBrCUWWkijp9fhfp7svs=; h=Date:From:To:In-Reply-To:References:Subject; b=GfPpnuZov5970L/DhrCZIt05nSXZOjIYMNxCxZ2JpKIsO8RZX669MIfWEP3gBb14T 9XxHqRQsyl0pTvyUfyUkrEf5rEcfW/2tIH0k0YF3zwISxrhir1XPuSMHMNFNxblvr2 0e3wP74o1W/r6ZYFHwHJvOyKT6ssyAUwZiUapT33CdnCtE6GO3Abzg6zHb2la0jPoE 7b+nCYLT/eYBwMnGBgVXwPVa4xb76t5KXJ7q3a7aY/c4vI4l8TIE4KF60Qmn6LPcSe BCldNEn4FUez6a2u+3PTF2AB8uwNrgsAOqqMwyTIw1SQ/nniOgTjhUtDanPZeYbggx vRCDAUPwS3fCg== Date: Fri, 11 Mar 2022 14:34:15 +0000 (GMT) From: Peter Stephenson To: zzapper , Mikael Magnusson , Zsh-Users List Message-ID: <107417053.1338591.1647009255775@mail2.virginmedia.com> In-Reply-To: <2218de7b-c1e6-031d-369e-0725d6f605d5@rayninfo.co.uk> References: <5b876163-b54c-871a-5cd6-0d8aa840c65f@rayninfo.co.uk> <2218de7b-c1e6-031d-369e-0725d6f605d5@rayninfo.co.uk> Subject: Re: Glob Qualifier Yn enables short-circuit mode behaves oddly MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Priority: 3 Importance: Medium X-Mailer: Open-Xchange Mailer v7.8.4-Rev72 X-Originating-IP: 165.225.17.146 X-Originating-Client: open-xchange-appsuite X-CMAE-Envelope: MS4xfBJaU0vWF92Lal9T8Pd36ON8OTQHu+5iGHL7xQYb+0PEiO1lkPS1QGgL33nzDtwhK8XMQ0VQQS7VhY7lDtNUeIGgye8PEtLhDW2KMUoP4UBZ+NGaghkf pVx8F97yn3gtqJ0E4JGQpiKI032VKwaPhT7zef35Zcrf2HN2jhELhpWnm/T38BmXRs4ukuoyqkcDFdFUaM/HbsL4helVVfzte5ppmjcXW8wBuPO2V3RDzJOE UEgTp1e/i/L1TIr7NniQ3d5nL+JwcndRMIMpL5jz5qA= X-Seq: 27546 Archived-At: X-Loop: zsh-users@zsh.org Errors-To: zsh-users-owner@zsh.org Precedence: list Precedence: bulk Sender: zsh-users-request@zsh.org X-no-archive: yes List-Id: List-Help: List-Subscribe: List-Unsubscribe: List-Post: List-Owner: List-Archive: > On 11 March 2022 at 14:12 zzapper wrote: > On 11/03/2022 13:50, Mikael Magnusson wrote: > > On 3/11/22, zzapper wrote: > >> Hi > >> > >> > print *(.omY3) > >> > >> notebash.txt note132.txt note020.txt > >> > >> I don't know why it's selected those 3 files but it always does > >> > >> > >> Yn > >> > >> enables short-circuit mode: the pattern will expand to at most n > >> filenames. If more than n matches exist, only the first n matches in > >> directory traversal order will be considered. > >> > >> Implies oN when no oc qualifier is used. > > You've included the answer in your mail, Y3 will stop looking at files > > after finding 3 in directory traversal order, those 3 files are then > > sorted according to their modification timestamp. If you want to > > consider all files in the directory, use [3] instead of Y3. > > So what then is traversal order? It's totally arbitrary -- whatever the OS throws up. That's the point of this optimisation --- you've told the shell you don't care what's there, you're just interested in there being something. I think the technical answer is likely to be "inode order". Typical usage of this feature is with a 1 to grab one file that might be the only one (but if it isn't you don't care). pws