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: Scanning parenthesis in string/comment Date: Mon, 23 Jan 2023 11:10:49 +0300 Message-ID: References: <497B6D44-1C2D-4C45-9B6B-6719D49B4A69@gmail.com> 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="5290"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mutt/2.2.9+54 (af2080d) (2022-11-21) Cc: help-gnu-emacs To: Yuan Fu Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Mon Jan 23 10:01:49 2023 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 1pJsi5-0001DG-F7 for geh-help-gnu-emacs@m.gmane-mx.org; Mon, 23 Jan 2023 10:01:49 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pJshS-0007eJ-IO; Mon, 23 Jan 2023 04:01:10 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pJshP-0007e9-5i for help-gnu-emacs@gnu.org; Mon, 23 Jan 2023 04:01:07 -0500 Original-Received: from stw1.rcdrun.com ([217.170.207.13]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pJshM-0002yG-Cb for help-gnu-emacs@gnu.org; Mon, 23 Jan 2023 04:01:06 -0500 Original-Received: from localhost ([::ffff:102.85.237.25]) (AUTH: PLAIN admin, TLS: TLS1.3,256bits,ECDHE_RSA_AES_256_GCM_SHA384) by stw1.rcdrun.com with ESMTPSA id 000000000010B846.0000000063CE4CB2.00003E5B; Mon, 23 Jan 2023 02:00:33 -0700 Mail-Followup-To: Yuan Fu , help-gnu-emacs Content-Disposition: inline In-Reply-To: <497B6D44-1C2D-4C45-9B6B-6719D49B4A69@gmail.com> Received-SPF: pass client-ip=217.170.207.13; envelope-from=bugs@gnu.support; helo=stw1.rcdrun.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham 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-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.help:142511 Archived-At: * Yuan Fu [2023-01-22 20:17]: > I’m writing an expand-region-like function, which expands region by logical entities, like word-at-point, list-at-point, etc. Say I have this string > > "Filter out invalid regions in REGIONS regarding ORIG. > ORIG is the current position. Each region is (BEG . END).” > > And point is at the opening parenthesis, how do I detect this > balanced parenthesis pair and expand the region over it? syntax-pass > and forward-list only works with lists outside of strings and > comments, IIUC. What I understand is that you use thing-at-point similar functions, so why not then define your own think at point in the sense as here below: ;;; Thing at point 'thing-within-quotes (defun rcd-tap-thing-within-quotes-start () "Move point to the beginning of thing within quotes." (re-search-backward (rx (or "\"" "'"))) (forward-char 1)) (defun rcd-tap-thing-within-quotes-end () "Move point to the end of thing within quotes." (re-search-forward (rx (or "\"" "'"))) (backward-char 1)) (put 'thing-within-quotes 'beginning-op 'rcd-tap-thing-within-quotes-start) (put 'thing-within-quotes 'end-op 'rcd-tap-thing-within-quotes-end) Then the above will give you whatever is inside of quotes you define when you apply function: (thing-at-point 'thing-within-quotes) on it, and it will not work well outside of quotes. -- Jean Take action in Free Software Foundation campaigns: https://www.fsf.org/campaigns In support of Richard M. Stallman https://stallmansupport.org/