From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Emanuel Berg via Users list for the GNU Emacs text editor Newsgroups: gmane.emacs.help Subject: Re: replace-regexp Date: Sun, 09 May 2021 01:16:33 +0200 Message-ID: <87y2covmsu.fsf@zoho.eu> References: <87tunf1mz5.fsf@zoho.eu> <87v97v6mxg.fsf@gnu.org> <87wnsaz9df.fsf@zoho.eu> <877dkaytwu.fsf@zoho.eu> <87czu1xdw6.fsf@zoho.eu> <878s4oyjr8.fsf@zoho.eu> Reply-To: Emanuel Berg Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="15842"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:Xu61JwddqfLMeJLYXogHmVCk6fo= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Sun May 09 01:20:35 2021 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lfWFN-0003tv-Cm for geh-help-gnu-emacs@m.gmane-mx.org; Sun, 09 May 2021 01:20:33 +0200 Original-Received: from localhost ([::1]:41282 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lfWFM-0005pu-43 for geh-help-gnu-emacs@m.gmane-mx.org; Sat, 08 May 2021 19:20:32 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:34654) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lfWEw-0005pU-1f for help-gnu-emacs@gnu.org; Sat, 08 May 2021 19:20:07 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]:49110) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lfWEu-0007xp-BB for help-gnu-emacs@gnu.org; Sat, 08 May 2021 19:20:05 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1lfWEs-0003IB-95 for help-gnu-emacs@gnu.org; Sun, 09 May 2021 01:20:02 +0200 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: help-gnu-emacs@gnu.org Mail-Copies-To: never Received-SPF: pass client-ip=116.202.254.214; envelope-from=geh-help-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:129591 Archived-At: Stefan Monnier via Users list for the GNU Emacs text editor wrote: >>> My comment wasn't just for regexp-replacement but more >>> generally for operating on a region. So better or not will >>> depend on the specific case. In many cases either way is >>> about as good. >> >> In general I don't like to use `setq' and in this case it >> also > > You can use (let ((end (copy-marker end t))) ...), of > course. I don't find it cryptic at all, but I'm probably not > well placed to judge. Let's say to a person who knows programming and Lisp to some extent but isn't an expert on Emacs internals. > In any case, my main point was that using narrowing can have > undesirable side effects because narrowing has > a far-reaching impact on operations in the buffer, so > depending on what you need to do within your loop you might > prefer to stay away from it (unless this far-reaching impact > is exactly what you're looking for, obviously). Yeah, that I'll not use. -- underground experts united https://dataswamp.org/~incal