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=-3.4 required=5.0 tests=DKIM_SIGNED,DKIM_VALID,
DKIM_VALID_AU,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 27226 invoked from network); 11 Mar 2022 14:34:54 -0000
Received: from zero.zsh.org (2a02:898:31:0:48:4558:7a:7368)
by inbox.vuxu.org with ESMTPUTF8; 11 Mar 2022 14:34:54 -0000
ARC-Seal: i=1; cv=none; a=rsa-sha256; d=zsh.org; s=rsa-20210803; t=1647009294;
b=KytZo8JOiOliQjyr8WsBgRja0w9BvDqYifFHRI0HSrm5152q4X9OQh9nGpI6XfoNFTUakdBb6q
UFIWAkT6mjH2P3H5ca6KHxki9ez/YVdIlTgsGi4KwVlutIypHva4X6ucsMjIpvLFd5a7+ncykl
r8e5/q2zefQJg6KqFY0mTREb4uFff7dK2BADrFkKgC3EAG4AfaxakRJIfEzkKKff6DVjWcDL4U
CpgTTcORM8F7vDjeUWu6Sf1nCBOqtnf2KTPtbs7PxEgZ48RNs5d3NF9PfPAwNZTyXZB/Hv1EcV
FSmcJpEw1XsHlTzRUjhhXx91O9aD9DmpsQ7yettpWekXnw==;
ARC-Authentication-Results: i=1; zsh.org;
iprev=pass (smtpq1.tb.ukmail.iss.as9143.net) smtp.remote-ip=212.54.57.96;
dkim=pass header.d=ntlworld.com header.s=meg.feb2017 header.a=rsa-sha256;
dmarc=pass header.from=ntlworld.com;
arc=none
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed; d=zsh.org; s=rsa-20210803; t=1647009294;
bh=4CQuTDEL1wTkk7dw9urW0zjEBrCUWWkijp9fhfp7svs=;
h=List-Archive:List-Owner:List-Post:List-Unsubscribe:List-Subscribe:List-Help:
List-Id:Sender:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:
References:In-Reply-To:Message-ID:To:From:Date:DKIM-Signature:
DKIM-Signature;
b=IgJwFsGqaS5FKfMmTKFlsYzYIyQmKW5EJTakEiAiUd3PQzko8IfeYaGz+BYq8xUnR0fI9ZRqn4
qGKe267rlklvT3e0ho+brKQrOIy+FVrNg85vbwnwEm+X5/tJ21kCviJZV+s55rgGidgr0tKcZr
I0iSwnXkUsTXYDBAxo7wDi9vUc3wqFWOO3OD6HX+iEAv8RKix6Y8khcONuBZu8EfLARu6m47Eu
+qnPPB2sV40OGH3ReiyyJj2ex9YRmBMXAdKmIYNUrCFLnDj5K2UXpn1blqukqL3Wf0ORvvcPRM
l/0Tm/ESaZuih0XJPUe4grx1+Cu93lt4XLKNX7Mnu1L2nA==;
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-Transfer-Encoding:
Content-Type:MIME-Version:Subject:References:In-Reply-To:Message-ID:To:From:
Date:Reply-To:Cc:Content-ID:Content-Description:Resent-Date:Resent-From:
Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID;
bh=a/irD/AsiXBPACwrNhrevZlv5gVgQQrwIibfIgQsUHM=; b=r4R04CrES0nunTF055LJaGucOy
1TxX7eZdIoAfw32OBa3szQsZIdUocJ2zVZWCbvDZz6P1wwbdv9q71U4rVNBblhNEGe/9JwBuvr4Kk
l1H3P2HNWIiaIpnPRjQew4zTqxtAebMb/dk/SHEn7yDitqg//XmSt7wVCY4q8BbQHe6FiszXdLLMd
U58P17hgdD0S6XxSYrouS/bFvAzBM/5L3liCyWOIkHZziU+NB1eFhmJC81yB2ph5g99RTOctzeJm6
1QIvtnnE874KYgVrlmy597RXK35gc2RHm5d8sYUc2xSfnU3BUbOIKPy7KNndFt04U/kYWT6SFIUlP
StOJ49Ng==;
Received: from authenticated user by zero.zsh.org with local
id 1nSgM2-0004pU-8F; Fri, 11 Mar 2022 14:34:54 +0000
Authentication-Results: zsh.org;
iprev=pass (smtpq1.tb.ukmail.iss.as9143.net) smtp.remote-ip=212.54.57.96;
dkim=pass header.d=ntlworld.com header.s=meg.feb2017 header.a=rsa-sha256;
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