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: Fri, 07 May 2021 20:28:28 +0200 Message-ID: <87wnsaz9df.fsf@zoho.eu> References: <87tunf1mz5.fsf@zoho.eu> <87v97v6mxg.fsf@gnu.org> 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="32707"; 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:d5x9Qxjxt2Coo+gQ4gP9MPrcuIM= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Fri May 07 20:34:25 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 1lf5Iv-0008Me-9B for geh-help-gnu-emacs@m.gmane-mx.org; Fri, 07 May 2021 20:34:25 +0200 Original-Received: from localhost ([::1]:49984 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lf5Iu-0003xN-AE for geh-help-gnu-emacs@m.gmane-mx.org; Fri, 07 May 2021 14:34:24 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:34102) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lf5DO-0006cP-Ix for help-gnu-emacs@gnu.org; Fri, 07 May 2021 14:28:44 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]:58190) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lf5DK-0002rS-Lg for help-gnu-emacs@gnu.org; Fri, 07 May 2021 14:28:40 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1lf5DG-00007Q-MS for help-gnu-emacs@gnu.org; Fri, 07 May 2021 20:28:34 +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:129554 Archived-At: Tassilo Horn wrote: >> so I wrote this and it does the job but reports the error >> "while: Invalid search bound (wrong side of point)" >> >> (defun md-latex (beg end) >> (interactive "r") >> (save-excursion >> (goto-char beg) >> (while (re-search-forward "_\\(.*\\)_" end t) >> (replace-match "\\\\textit{\\1}") ))) > > I think you didn't call your command interactively but > through code like (md-latex 170 82) where the BEG was larger > than END. When being called interactively the "r" spec makes > sure that BEG is always the smaller one, no matter if point > is before mark or the other way round. Nope, I called it with M-x. Tried again now, still the same error. It works but I get the error. Maybe it has something to do with the replacement being longer than the original string? >> If it is just a matter of re-writing it the way I did (only >> without the error) I don't see why that cannot be dealt >> with so the user can just call the/a function with a simple >> interface, be it interactively or in Lisp... > > I guess it's because `replace-regexp' does much more than > just `re-search-forward' and `replace-match' in order to > provide a convenient interface for the user. Also it > supports stuff like \? as replacement which will query the > user. You'd normally wouldn't want/need that. So if all you > want is replace some regexp, `re-search-forward' with > `replace-match' is the non-overhead way to go. But why can't there be a function that does this so one doesn't have to write all that Lisp for every use case? Also, how about a general function that branches on "interactiveness"? It gets even more strange since the non-recommended function works just fine... -- underground experts united https://dataswamp.org/~incal