Path: csiph.com!optima2.xanadu-bbs.net!xanadu-bbs.net!news.glorb.com!usenet.stanford.edu!not-for-mail
From: Greg Wooledge <wooledg@eeg.ccf.org>
Newsgroups: gnu.bash.bug
Subject: Re: redirecting a file descriptor to an array variable? Possible? How? RFE?
Date: Wed, 18 Nov 2015 15:38:16 -0500
Lines: 21
Approved: bug-bash@gnu.org
Message-ID: <mailman.183.1447879104.31583.bug-bash@gnu.org>
References: <564532BD.60801@tlinx.org> <CAJnmqwbeSXYrNF6zEJ9nEx2Zyi23X9fxLvkkc1HFOh7JkqZUsw@mail.gmail.com> <564CC7A1.9090004@tlinx.org> <20151118185629.GJ27325@eeg.ccf.org> <564CDF9B.6050401@tlinx.org>
NNTP-Posting-Host: lists.gnu.org
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
X-Trace: usenet.stanford.edu 1447879104 26083 208.118.235.17 (18 Nov 2015 20:38:24 GMT)
X-Complaints-To: action@cs.stanford.edu
Cc: bug-bash <bug-bash@gnu.org>
To: Linda Walsh <bash@tlinx.org>
Envelope-to: bug-bash@gnu.org
Content-Disposition: inline
In-Reply-To: <564CDF9B.6050401@tlinx.org>
User-Agent: Mutt/1.4.2.3i
X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic]
X-Received-From: 139.137.100.1
X-BeenThere: bug-bash@gnu.org
X-Mailman-Version: 2.1.14
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: <http://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>
Xref: csiph.com gnu.bash.bug:11911

On Wed, Nov 18, 2015 at 12:29:15PM -0800, Linda Walsh wrote:
> Greg Wooledge wrote:
> >An argument cannot contain a NUL byte.  So it's moot.
> ---
> 	As in:
> >printf '"%c"\n'  $'\x00'|hexdump -C
> 00000000  22 00 22 0a                                       |".".|

imadev:~$ printf '"%c"\n' '' | od -t x1
0000000   22   0  22   a
0000004

$'\x00' and $'\0' and '' and "" are all empty strings.

Still don't believe me?

imadev:~$ x=$'\x00'; echo "${#x}"
0

It has length 0.