From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Kevin Rodgers Newsgroups: gmane.emacs.help Subject: Re: how to use parsing expressing grammar Date: Wed, 17 Dec 2008 20:43:28 -0700 Message-ID: References: <72bde6b1-ee08-4053-8d42-2a16ccd59900@v5g2000prm.googlegroups.com> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1229571857 13906 80.91.229.12 (18 Dec 2008 03:44:17 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 18 Dec 2008 03:44:17 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Thu Dec 18 04:45:22 2008 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 4.50) id 1LD9pA-0007od-NH for geh-help-gnu-emacs@m.gmane.org; Thu, 18 Dec 2008 04:45:20 +0100 Original-Received: from localhost ([127.0.0.1]:40354 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1LD9ny-0006ok-GQ for geh-help-gnu-emacs@m.gmane.org; Wed, 17 Dec 2008 22:44:06 -0500 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1LD9ne-0006mh-5C for help-gnu-emacs@gnu.org; Wed, 17 Dec 2008 22:43:46 -0500 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1LD9nc-0006mD-Ro for help-gnu-emacs@gnu.org; Wed, 17 Dec 2008 22:43:45 -0500 Original-Received: from [199.232.76.173] (port=53422 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1LD9nc-0006m9-KR for help-gnu-emacs@gnu.org; Wed, 17 Dec 2008 22:43:44 -0500 Original-Received: from main.gmane.org ([80.91.229.2]:56450 helo=ciao.gmane.org) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1LD9nc-0004C0-5f for help-gnu-emacs@gnu.org; Wed, 17 Dec 2008 22:43:44 -0500 Original-Received: from list by ciao.gmane.org with local (Exim 4.43) id 1LD9nW-00063M-Jw for help-gnu-emacs@gnu.org; Thu, 18 Dec 2008 03:43:38 +0000 Original-Received: from c-67-161-145-183.hsd1.co.comcast.net ([67.161.145.183]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 18 Dec 2008 03:43:38 +0000 Original-Received: from kevin.d.rodgers by c-67-161-145-183.hsd1.co.comcast.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 18 Dec 2008 03:43:38 +0000 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 48 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: c-67-161-145-183.hsd1.co.comcast.net User-Agent: Thunderbird 2.0.0.18 (Macintosh/20081105) In-Reply-To: <72bde6b1-ee08-4053-8d42-2a16ccd59900@v5g2000prm.googlegroups.com> X-detected-operating-system: by monty-python.gnu.org: GNU/Linux 2.6, seldom 2.4 (older, 4) 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:60767 Archived-At: Xah Lee wrote: > There are 2 parsing expression grammars in elisp. > > * http://www.emacswiki.org/cgi-bin/wiki/ParserCompiler, (2008) by > Mike Mattie. > * http://www.emacswiki.org/emacs/ParsingExpressionGrammars (2008) > by Helmut Eller. > > The second one seems simpler, and i'm trying to learn it as a regex > replacement, but don't know how to use it. > > Could anyone give concrete example in the following scenario? > > For example, on my website i have things like: > >
>

Related essays:

> > > Suppose i want to change them to: > >
>

See also:

>

> SomeTitleString1 someSring1
> SomeTitleString2 someSring2
> ... >

> > How do i do it? Choose the right tool for the job: sed -e 's|^

Related essays:

$|

See also:

|' -e '/^
    $/,/^<\/ul>/{s|^<\(/*\)ul>$|<\1p>|;s|^
  • ||;s|
    • $|
    |;}' And since this is help-gnu-emacs@gnu.org: C-x h C-u M-| sed -e ... -- Kevin Rodgers Denver, Colorado, USA