From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: "Lennart Borgman (gmail)" Newsgroups: gmane.emacs.help Subject: Re: elisp optimization question Date: Fri, 09 May 2008 00:14:49 +0200 Message-ID: <48237B59.40807@gmail.com> References: <86k5i4pt9y.fsf@jobbicycle.corp.yahoo.com> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1210284974 20434 80.91.229.12 (8 May 2008 22:16:14 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 8 May 2008 22:16:14 +0000 (UTC) Cc: help-gnu-emacs@gnu.org To: brad clawsie Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Fri May 09 00:16:48 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 1JuEPA-0008TP-GZ for geh-help-gnu-emacs@m.gmane.org; Fri, 09 May 2008 00:16:00 +0200 Original-Received: from localhost ([127.0.0.1]:41356 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1JuEOS-0001Fe-74 for geh-help-gnu-emacs@m.gmane.org; Thu, 08 May 2008 18:15:16 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1JuEOA-0001FG-Tr for help-gnu-emacs@gnu.org; Thu, 08 May 2008 18:14:58 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1JuEO8-0001Er-Hn for help-gnu-emacs@gnu.org; Thu, 08 May 2008 18:14:57 -0400 Original-Received: from [199.232.76.173] (port=42604 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1JuEO8-0001Eo-CQ for help-gnu-emacs@gnu.org; Thu, 08 May 2008 18:14:56 -0400 Original-Received: from ch-smtp01.sth.basefarm.net ([80.76.149.212]:46225) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1JuEO5-0001Gd-No for help-gnu-emacs@gnu.org; Thu, 08 May 2008 18:14:54 -0400 Original-Received: from c83-254-150-27.bredband.comhem.se ([83.254.150.27]:64901 helo=[127.0.0.1]) by ch-smtp01.sth.basefarm.net with esmtp (Exim 4.68) (envelope-from ) id 1JuEO4-0005lp-4P; Fri, 09 May 2008 00:14:52 +0200 User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.9) Gecko/20071031 Thunderbird/2.0.0.9 Mnenhy/0.7.5.666 In-Reply-To: <86k5i4pt9y.fsf@jobbicycle.corp.yahoo.com> X-Antivirus: avast! (VPS 080508-0, 2008-05-08), Outbound message X-Antivirus-Status: Clean X-Originating-IP: 83.254.150.27 X-Scan-Result: No virus found in message 1JuEO4-0005lp-4P. X-Scan-Signature: ch-smtp01.sth.basefarm.net 1JuEO4-0005lp-4P aa18a0252a48bf23543be2a2ef6fd191 X-detected-kernel: by monty-python.gnu.org: Linux 2.6? (barebone, rare!) 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:53828 Archived-At: brad clawsie wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > hi, i use the following function to translate unicode and other > entities found on the web into ascii that i can view in emacs-w3m. i > am concerned that each search and replace as done in my example is > inefficient, is there a better way to do this? i.e., is there a better > way to group search/replace pairs? thanks in advance! > > (defun w3m-filter-brad (url) > (goto-char (point-min)) > (while (re-search-forward "»" nil t) > (replace-match ">>")) > (goto-char (point-min)) > (while (re-search-forward "’" nil t) > (replace-match "'")) > (goto-char (point-min)) > (while (re-search-forward "“" nil t) > (replace-match "\"")) > (goto-char (point-min)) > (while (re-search-forward "”" nil t) > (replace-match "\"")) > (goto-char (point-min)) > (while (re-search-forward "—" nil t) > (replace-match "-")) > (goto-char (point-min)) > (while (re-search-forward "«" nil t) > (replace-match "<")) > (goto-char (point-min)) > (while (re-search-forward "»" nil t) > (replace-match ">")) > (goto-char (point-min)) > (while (re-search-forward "ö" nil t) > (replace-match "o")) > ) When you write it the way you do you do not need re-search-forward, just search-forward since you search for strings, not regular expressions. Another way to make it faster would perhaps be to make one regular expression with regexp-opt and then check the match.