From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Jean Louis Newsgroups: gmane.emacs.help Subject: Re: [External] : How to get all paragraphs in list? Date: Fri, 16 Sep 2022 22:04:36 +0300 Message-ID: References: <877d2ehhfe.fsf@dataswamp.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="3824"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mutt/+ () (2022-06-11) Cc: help-gnu-emacs@gnu.org To: Yuri Khan Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Fri Sep 16 21:18:51 2022 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 1oZGrT-0000lO-5K for geh-help-gnu-emacs@m.gmane-mx.org; Fri, 16 Sep 2022 21:18:51 +0200 Original-Received: from localhost ([::1]:51568 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oZGrS-00053g-5n for geh-help-gnu-emacs@m.gmane-mx.org; Fri, 16 Sep 2022 15:18:50 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:59268) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oZGpF-0004zv-2y for help-gnu-emacs@gnu.org; Fri, 16 Sep 2022 15:16:33 -0400 Original-Received: from stw1.rcdrun.com ([217.170.207.13]:47497) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oZGpD-0001oy-Ew for help-gnu-emacs@gnu.org; Fri, 16 Sep 2022 15:16:32 -0400 Original-Received: from localhost ([::ffff:197.239.4.153]) (AUTH: PLAIN admin, TLS: TLS1.3,256bits,ECDHE_RSA_AES_256_GCM_SHA384) by stw1.rcdrun.com with ESMTPSA id 00000000000B5AC8.000000006324CB8D.000034A3; Fri, 16 Sep 2022 12:16:28 -0700 Mail-Followup-To: Yuri Khan , help-gnu-emacs@gnu.org Content-Disposition: inline In-Reply-To: Received-SPF: pass client-ip=217.170.207.13; envelope-from=bugs@gnu.support; helo=stw1.rcdrun.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_SBL=0.141, SPF_HELO_PASS=-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: 2.1.29 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:139540 Archived-At: * Yuri Khan [2022-09-16 19:26]: > On Fri, 16 Sept 2022 at 20:29, Emanuel Berg wrote: > > > > More to the point[sic], you calculate and cache the END > > > position as an integer. So if your FUNCTION reduces the > > > length of the buffer text, you may never reach END. > > > Should probably place a marker there > > > > Marker, do we have that? :O > > > > How does that look/work? > > Will you forgive me if I say “(elisp) Markers”? Basically it’s a way > to refer to a position in the buffer in a way that remains valid and > somewhat sane under buffer text modification. That was alright, and I have changed (point-max) to (point-max-marker) now and it seem to work. I have to test it many times until I become sure. This is important because I have many documents which I often quote, and copy into other programs, where broken lines are making incorrect representation. (defun rcd-paragraphs-iterate (function) "Iterate FUNCTION over paragraphs. FUNCTION must accept string as single argument." (let ((start (if (use-region-p) (region-beginning) (point-min))) (end (if (use-region-p) (region-end) (point-max-marker)))) (save-excursion (goto-char start) (while (<= (point) end) (funcall function) (forward-paragraph))))) (defun join-lines () "Joins lines of a paragraph." (interactive) (let ((fill-column (point-max))) (fill-paragraph))) (defun join-lines-buffer-or-region () "Join lines on all buffer." (interactive) (rcd-paragraphs-iterate 'join-lines)) (defun join-lines-string (text) "Join lines within TEXT." (with-temp-buffer (insert text) (rcd-paragraphs-iterate 'join-lines) (buffer-string))) (defun join-lines-1 (text) (with-temp-buffer (let ((fill-column 100000)) (insert text) (goto-char 0) (fill-paragraph) (buffer-string)))) (defun kill-region-join-lines (start end) "Kill region with lines joined" (interactive "r") (when (region-active-p) (let* ((text (buffer-substring-no-properties start end)) (joined (join-lines-1 text))) (deactivate-mark) (kill-new joined)))) -- Jean Take action in Free Software Foundation campaigns: https://www.fsf.org/campaigns In support of Richard M. Stallman https://stallmansupport.org/