From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Deniz Dogan Newsgroups: gmane.emacs.help Subject: Re: Emacs insert empty string Date: Thu, 24 Mar 2011 11:38:52 +0100 Message-ID: References: <5908567d-3d1a-4f09-a4cb-e2c3ee9557be@k7g2000yqj.googlegroups.com> <3AD1412A-B555-48B2-9F41-B2C593E956A1@Web.DE> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Trace: dough.gmane.org 1300963932 18858 80.91.229.12 (24 Mar 2011 10:52:12 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Thu, 24 Mar 2011 10:52:12 +0000 (UTC) Cc: Kenneth Brun Nielsen , help-gnu-emacs@gnu.org To: Peter Dyballa Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Thu Mar 24 11:52:06 2011 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Q2i96-0006HO-JE for geh-help-gnu-emacs@m.gmane.org; Thu, 24 Mar 2011 11:52:04 +0100 Original-Received: from localhost ([127.0.0.1]:45835 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Q2hxe-0002rL-7S for geh-help-gnu-emacs@m.gmane.org; Thu, 24 Mar 2011 06:40:14 -0400 Original-Received: from [140.186.70.92] (port=46044 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Q2hwh-0002p3-PZ for help-gnu-emacs@gnu.org; Thu, 24 Mar 2011 06:39:17 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Q2hwg-0003OK-90 for help-gnu-emacs@gnu.org; Thu, 24 Mar 2011 06:39:15 -0400 Original-Received: from mail-iy0-f169.google.com ([209.85.210.169]:51223) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Q2hwg-0003O8-5I for help-gnu-emacs@gnu.org; Thu, 24 Mar 2011 06:39:14 -0400 Original-Received: by iyf13 with SMTP id 13so12412873iyf.0 for ; Thu, 24 Mar 2011 03:39:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc:content-type:content-transfer-encoding; bh=GOoDBAdiubFwjnkkoAf0IG4n0I2d9iC8kl3n39iYgUM=; b=CReFRsjtACnQmAe/I+ewmpJDH/+L5xIbEx5k4fWgUTP5uVygPzhIRPu2QOMC7Q8fWa hAqD8z8Mwo8u1llMvN5KcyeL7XWOVcdlXCeg5XTEwOLTCmEDmyiXGgj3QcaWcZU4tI5+ UDxbPbl1a5FTGNpjslGw2JRqJfuqBQKyjMpzI= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc:content-type:content-transfer-encoding; b=Vuf9gNcuRvZLmU6oYwSoaYpBVDy0RJ3RmQAtLWZx76DVNweM2ut9LEv29jPfXGl4c7 dXjLQb163ZFRorI8nS3zHOB/VSonUVM5c/9vIDhmGcSeyma9NLyHJFUWyaJyseEW9DjI PL918egnJGREEf377DKq77Sd/9EMiZroW/idE= Original-Received: by 10.231.141.20 with SMTP id k20mr7848038ibu.132.1300963153130; Thu, 24 Mar 2011 03:39:13 -0700 (PDT) Original-Received: by 10.231.199.200 with HTTP; Thu, 24 Mar 2011 03:38:52 -0700 (PDT) In-Reply-To: <3AD1412A-B555-48B2-9F41-B2C593E956A1@Web.DE> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 2) X-Received-From: 209.85.210.169 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:80384 Archived-At: 2011/3/24 Peter Dyballa : > > Am 24.03.2011 um 02:46 schrieb Kenneth Brun Nielsen: > >> How can I insert an empty string? > > > What is "an empty string?" Can you exactly and comprehensively describe > this? Is it defined in Wikipedia? And give us a few examples? > http://en.wikipedia.org/wiki/Empty_string Cited: "In computer science and formal language theory, the empty string (or null string)[1] is the unique string of length zero. It is denoted with =CE=BB or sometimes =CE=9B or =CE=B5. The empty string is distinct from a null reference in that in an object-oriented programming language a null reference to a string type doesn't point to a string object and will cause an error were one to try to perform any operation on it. The empty string is still a string upon which string operations may be attempted. A related concept is the empty language =E2=88=85, a formal language that contains no strings." --=20 Deniz Dogan