Path: csiph.com!goblin2!goblin1!goblin.stu.neva.ru!usenet.stanford.edu!not-for-mail
From: Greg Wooledge <wooledg@eeg.ccf.org>
Newsgroups: gnu.bash.bug
Subject: Re: %q with truncating size loses safeness of %q
Date: Fri, 17 Apr 2020 11:16:42 -0400
Lines: 7
Approved: bug-bash@gnu.org
Message-ID: <mailman.509.1587136635.3066.bug-bash@gnu.org>
References: <CAOj-5WCqxqh=Gcda9k6y4orQaQYXPgsOgNEOVN1AdZQrkCVbtg@mail.gmail.com> <20200417151642.GQ845@eeg.ccf.org>
NNTP-Posting-Host: lists.gnu.org
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
X-Trace: usenet.stanford.edu 1587136635 4625 209.51.188.17 (17 Apr 2020 15:17:15 GMT)
X-Complaints-To: action@cs.stanford.edu
To: bug-bash@gnu.org
Envelope-to: bug-bash@gnu.org
Mail-Followup-To: bug-bash@gnu.org
Content-Disposition: inline
In-Reply-To: <CAOj-5WCqxqh=Gcda9k6y4orQaQYXPgsOgNEOVN1AdZQrkCVbtg@mail.gmail.com>
User-Agent: Mutt/1.10.1 (2018-07-13)
X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy]
X-Received-From: 139.137.100.1
X-BeenThere: bug-bash@gnu.org
X-Mailman-Version: 2.1.23
Precedence: list
List-Id: Bug reports for the GNU Bourne Again SHell <bug-bash.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/bug-bash>, <mailto:bug-bash-request@gnu.org?subject=unsubscribe>
List-Archive: <https://lists.gnu.org/archive/html/bug-bash>
List-Post: <mailto:bug-bash@gnu.org>
List-Help: <mailto:bug-bash-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/bug-bash>, <mailto:bug-bash-request@gnu.org?subject=subscribe>
X-Mailman-Original-Message-ID: <20200417151642.GQ845@eeg.ccf.org>
X-Mailman-Original-References: <CAOj-5WCqxqh=Gcda9k6y4orQaQYXPgsOgNEOVN1AdZQrkCVbtg@mail.gmail.com>
Xref: csiph.com gnu.bash.bug:16150

On Fri, Apr 17, 2020 at 03:22:16PM +0100, Sam Liddicott wrote:
> printf %q with a truncating size will emit partially escaped
> sequence thus losing the safety and composability that %q
> is intended to provide.

So... don't do that.