From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Marcin Borkowski Newsgroups: gmane.emacs.help Subject: How to do write-region, but modify Date: Sat, 25 Oct 2014 16:58:22 +0200 Message-ID: <877fzo5h81.fsf@wmi.amu.edu.pl> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1414249184 29771 80.91.229.3 (25 Oct 2014 14:59:44 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 25 Oct 2014 14:59:44 +0000 (UTC) To: help-gnu-emacs Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Sat Oct 25 16:59:39 2014 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 1Xi2oc-0003V2-Q6 for geh-help-gnu-emacs@m.gmane.org; Sat, 25 Oct 2014 16:59:38 +0200 Original-Received: from localhost ([::1]:53710 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Xi2oc-00023b-FV for geh-help-gnu-emacs@m.gmane.org; Sat, 25 Oct 2014 10:59:38 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:51417) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Xi2ng-00014E-KX for help-gnu-emacs@gnu.org; Sat, 25 Oct 2014 10:58:46 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Xi2na-0007rw-VV for help-gnu-emacs@gnu.org; Sat, 25 Oct 2014 10:58:40 -0400 Original-Received: from msg.wmi.amu.edu.pl ([2001:808:114:2::50]:50198) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Xi2na-0007rs-Oy for help-gnu-emacs@gnu.org; Sat, 25 Oct 2014 10:58:34 -0400 Original-Received: from localhost (localhost [127.0.0.1]) by msg.wmi.amu.edu.pl (Postfix) with ESMTP id 0664A42265 for ; Sat, 25 Oct 2014 16:58:32 +0200 (CEST) Original-Received: from msg.wmi.amu.edu.pl ([127.0.0.1]) by localhost (msg.wmi.amu.edu.pl [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 0JJNWSYHoyi6 for ; Sat, 25 Oct 2014 16:58:31 +0200 (CEST) Original-Received: from localhost (99-229.echostar.pl [213.156.99.229]) by msg.wmi.amu.edu.pl (Postfix) with ESMTPSA id B1AB442264 for ; Sat, 25 Oct 2014 16:58:31 +0200 (CEST) X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-Received-From: 2001:808:114:2::50 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:100607 Archived-At: Hi all, I'd like to have a variant of write-region, which (instead of saving to a file) "saves" the region to a temporary buffer and lets me change it somehow there. What I'm doing now is something like this: --8<---------------cut here---------------start------------->8--- (let ((text (buffer-substring beg end))) (with-temp-buffer (insert text) (do-some manipulation) (write-region (point-min) (point-max) filename))) --8<---------------cut here---------------end--------------->8--- This feels not optimal, since the text is copied twice (once to the variable `text' and then to the temporary buffer). Any suggestions on how to improve this code? TIA, -- Marcin Borkowski http://octd.wmi.amu.edu.pl/en/Marcin_Borkowski Adam Mickiewicz University