From owner-svn-src-all@FreeBSD.ORG  Fri Nov  7 21:30:17 2014
Return-Path: <owner-svn-src-all@FreeBSD.ORG>
Delivered-To: svn-src-all@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id B4263EDC;
 Fri,  7 Nov 2014 21:30:17 +0000 (UTC)
Received: from svn.freebsd.org (svn.freebsd.org
 [IPv6:2001:1900:2254:2068::e6a:0])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id A05F8E93;
 Fri,  7 Nov 2014 21:30:17 +0000 (UTC)
Received: from svn.freebsd.org ([127.0.1.70])
 by svn.freebsd.org (8.14.9/8.14.9) with ESMTP id sA7LUHTk064015;
 Fri, 7 Nov 2014 21:30:17 GMT (envelope-from jilles@FreeBSD.org)
Received: (from jilles@localhost)
 by svn.freebsd.org (8.14.9/8.14.9/Submit) id sA7LUHJ6064014;
 Fri, 7 Nov 2014 21:30:17 GMT (envelope-from jilles@FreeBSD.org)
Message-Id: <201411072130.sA7LUHJ6064014@svn.freebsd.org>
X-Authentication-Warning: svn.freebsd.org: jilles set sender to
 jilles@FreeBSD.org using -f
From: Jilles Tjoelker <jilles@FreeBSD.org>
Date: Fri, 7 Nov 2014 21:30:17 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-head@freebsd.org
Subject: svn commit: r274254 - head/bin/sh
X-SVN-Group: head
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
X-BeenThere: svn-src-all@freebsd.org
X-Mailman-Version: 2.1.18-1
Precedence: list
List-Id: "SVN commit messages for the entire src tree \(except for &quot;
 user&quot; and &quot; projects&quot; \)" <svn-src-all.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-all/>
List-Post: <mailto:svn-src-all@freebsd.org>
List-Help: <mailto:svn-src-all-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 07 Nov 2014 21:30:17 -0000

Author: jilles
Date: Fri Nov  7 21:30:16 2014
New Revision: 274254
URL: https://svnweb.freebsd.org/changeset/base/274254

Log:
  sh(1): Mention portability issue with shifting zero positional parameters.
  
  Per Austin Group issue #459, shifting zero positional parameters may or may
  not be considered an operand error (which causes the shell to exit in most
  cases).

Modified:
  head/bin/sh/sh.1

Modified: head/bin/sh/sh.1
==============================================================================
--- head/bin/sh/sh.1	Fri Nov  7 20:42:15 2014	(r274253)
+++ head/bin/sh/sh.1	Fri Nov  7 21:30:16 2014	(r274254)
@@ -32,7 +32,7 @@
 .\"	from: @(#)sh.1	8.6 (Berkeley) 5/4/95
 .\" $FreeBSD$
 .\"
-.Dd September 21, 2014
+.Dd November 7, 2014
 .Dt SH 1
 .Os
 .Sh NAME
@@ -2522,7 +2522,8 @@ and so on,
 decreasing the value of
 .Li $#
 by one.
-If there are zero positional parameters, shifting does not do anything.
+For portability, shifting if there are zero positional parameters
+should be avoided, since the shell may abort.
 .It Ic test
 A built-in equivalent of
 .Xr test 1 .