From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Emanuel Berg Newsgroups: gmane.emacs.help Subject: Re: How to delete the parens around a sexp? Date: Wed, 23 Sep 2015 02:49:40 +0200 Message-ID: <87r3lqc63f.fsf@debian.uxu> References: <87vbb23nrn.fsf@mbork.pl> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1442968893 6493 80.91.229.3 (23 Sep 2015 00:41:33 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 23 Sep 2015 00:41:33 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Wed Sep 23 02:41:21 2015 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1ZeY7d-0000NN-3v for geh-help-gnu-emacs@m.gmane.org; Wed, 23 Sep 2015 02:41:21 +0200 Original-Received: from localhost ([::1]:44007 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZeY7c-0001T2-FS for geh-help-gnu-emacs@m.gmane.org; Tue, 22 Sep 2015 20:41:20 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:56338) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZeY7S-0001ST-R5 for help-gnu-emacs@gnu.org; Tue, 22 Sep 2015 20:41:12 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZeY7P-0007ru-Ke for help-gnu-emacs@gnu.org; Tue, 22 Sep 2015 20:41:10 -0400 Original-Received: from plane.gmane.org ([80.91.229.3]:42786) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZeY7P-0007rG-Eq for help-gnu-emacs@gnu.org; Tue, 22 Sep 2015 20:41:07 -0400 Original-Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1ZeY7N-0008Vp-Dk for help-gnu-emacs@gnu.org; Wed, 23 Sep 2015 02:41:05 +0200 Original-Received: from nl106-137-244.student.uu.se ([130.243.137.244]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 23 Sep 2015 02:41:05 +0200 Original-Received: from embe8573 by nl106-137-244.student.uu.se with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 23 Sep 2015 02:41:05 +0200 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: help-gnu-emacs@gnu.org Original-Lines: 53 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: nl106-137-244.student.uu.se Mail-Copies-To: never User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4 (gnu/linux) Cancel-Lock: sha1:ozWDMoJ/K+JK6I4qrDm8n9dh/YM= X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 80.91.229.3 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.14 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.org@gnu.org Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:107298 Archived-At: Marcin Borkowski writes: > I'd like to transform this: > > -!-(some gibberish) > > into this: > > -!-some gibberish > > I assume there's no function in Elisp for that, and > it's trivial to write one You say "sexp" when you want to delete the parens around (some gibberish) but place point within the parens and do for example `forward-sexp' and see that "some" and "gibberish" are not a unit. If you want do just delete right and left parens in natural languages, something like the below would work. If you want do delete *matching* pairs in programming, you would have to do the same, only with `matching-paren' or so to find out what should be deleted. (defun remove-parens () (interactive) (let ((start (point)) (right) (left) (done) ) (setq right (re-search-forward ")" nil t) ) (when right (goto-char start) (setq left (re-search-backward "(" nil t)) (when (and right left) (goto-char right) (delete-char -1) (goto-char left) (delete-char 1) (goto-char (1- start)) (setq done t) )) (unless done (message "No parenthesis pair around point.") ))) -- underground experts united http://user.it.uu.se/~embe8573