From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Le Wang Newsgroups: gmane.emacs.help Subject: Re: will we ever have zero width assertions in regexps? Date: Thu, 27 Jan 2011 09:45:25 +0800 Message-ID: References: NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: multipart/alternative; boundary=0016e65b40f67c2a5f049aca1a64 X-Trace: dough.gmane.org 1296092757 9235 80.91.229.12 (27 Jan 2011 01:45:57 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Thu, 27 Jan 2011 01:45:57 +0000 (UTC) Cc: help-gnu-emacs@gnu.org To: Stefan Monnier Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Thu Jan 27 02:45:52 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 1PiGvn-0006ym-GN for geh-help-gnu-emacs@m.gmane.org; Thu, 27 Jan 2011 02:45:51 +0100 Original-Received: from localhost ([127.0.0.1]:42915 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PiGvm-0000zS-UL for geh-help-gnu-emacs@m.gmane.org; Wed, 26 Jan 2011 20:45:51 -0500 Original-Received: from [140.186.70.92] (port=58890 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PiGvQ-0000zN-9e for help-gnu-emacs@gnu.org; Wed, 26 Jan 2011 20:45:29 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1PiGvO-0007Vg-To for help-gnu-emacs@gnu.org; Wed, 26 Jan 2011 20:45:28 -0500 Original-Received: from mail-ew0-f41.google.com ([209.85.215.41]:38006) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1PiGvO-0007Va-Ha for help-gnu-emacs@gnu.org; Wed, 26 Jan 2011 20:45:26 -0500 Original-Received: by ewy27 with SMTP id 27so567016ewy.0 for ; Wed, 26 Jan 2011 17:45:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc:content-type; bh=wJgKDwsKuc9cGKVfUdTu4Frrg7aTKJ6/8pftOmqsh6w=; b=Zu8/kxFMXlNw/T9GvDWasHLHVak9V/nR8f+qexqPh+1JwLP1JP9zMYUYlCDiVcdgFh 2UB1Vpcij7CkAnDNkjWxFffeE6/pCz+Qsng7bU3zkNHbR3pTAI0jJlcDnGLhIRjO+CSA Qukrp6j/1Vt/WeoPKi1HKtgo48J5WqHB5UuhQ= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=kEkrO+vAlrK/WBRv9PshhkKHzsJvpMhwhKnNoeLPTMgKduf13L4dLXzBsX4RhlU4n4 hIAGkBTsX6ta/lNGAFlTHbNUMhcZH3VA/mkED3ipPuB8MBLG5Or4YGvEkoam05a0K6HU BYt3jgLt6Uv2tPq9P6ZefgeQIQYm5fxweujgY= Original-Received: by 10.14.17.193 with SMTP id j41mr1402426eej.38.1296092725258; Wed, 26 Jan 2011 17:45:25 -0800 (PST) Original-Received: by 10.14.119.11 with HTTP; Wed, 26 Jan 2011 17:45:25 -0800 (PST) In-Reply-To: X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 2) 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:78773 Archived-At: --0016e65b40f67c2a5f049aca1a64 Content-Type: text/plain; charset=ISO-8859-1 Indeed. I'm using Emacs 23.2.1, so I don't know whether this is already in the latest CVS version. But assuming it's not, is this feature on the radar of the developers? Google turned up no discussion of it. On Wed, Jan 26, 2011 at 11:58 PM, Stefan Monnier wrote: > > I mean positive/negative look-ahead/look-behind similar to what is > available > > in Perl. http://perldoc.perl.org/perlreref.html > > The future is full of mysteries. > > > Stefan > -- Le --0016e65b40f67c2a5f049aca1a64 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Indeed. =A0I'm using Emacs 23.2.1, so I don't know whether this is = already in the latest CVS version. But assuming it's not, is this featu= re on the radar of the developers? =A0Google turned up no discussion of it.=

On Wed, Jan 26, 2011 at 11:58 PM, Stefan Mon= nier <monn= ier@iro.umontreal.ca> wrote:
> I mean positive/negative look-ahead/look-behind simi= lar to what is available
> in Perl. =A0http://perldoc.perl.org/perlreref.html

The future is full of mysteries.


=A0 =A0 =A0 =A0Stefan



--
Le
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