From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: converting octal escape sequences to utf-8 and back Date: Mon, 30 May 2011 19:54:20 -0300 Message-ID: References: <19937.37639.583480.682350@gargle.gargle.HOWL> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: dough.gmane.org 1306796074 14484 80.91.229.12 (30 May 2011 22:54:34 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Mon, 30 May 2011 22:54:34 +0000 (UTC) Cc: emacs-devel@gnu.org To: "Roland Winkler" Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue May 31 00:54:30 2011 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([140.186.70.17]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1QRBLu-0005sS-SG for ged-emacs-devel@m.gmane.org; Tue, 31 May 2011 00:54:26 +0200 Original-Received: from localhost ([::1]:58223 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QRBLu-0005Xm-2m for ged-emacs-devel@m.gmane.org; Mon, 30 May 2011 18:54:26 -0400 Original-Received: from eggs.gnu.org ([140.186.70.92]:51098) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QRBLs-0005XW-Ff for emacs-devel@gnu.org; Mon, 30 May 2011 18:54:25 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QRBLr-0005Mt-L6 for emacs-devel@gnu.org; Mon, 30 May 2011 18:54:24 -0400 Original-Received: from fencepost.gnu.org ([140.186.70.10]:36276) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QRBLr-0005Mp-Db for emacs-devel@gnu.org; Mon, 30 May 2011 18:54:23 -0400 Original-Received: from [190.194.233.124] (port=40439 helo=ceviche.home) by fencepost.gnu.org with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1QRBLq-00077C-Tp; Mon, 30 May 2011 18:54:23 -0400 Original-Received: by ceviche.home (Postfix, from userid 20848) id 2E933660D3; Mon, 30 May 2011 19:54:20 -0300 (ART) In-Reply-To: <19937.37639.583480.682350@gargle.gargle.HOWL> (Roland Winkler's message of "Sat, 28 May 2011 19:27:51 -0500") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-Received-From: 140.186.70.10 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:139920 Archived-At: > I am trying to use emacs to interface with a program that treats > utf-8 characters in its input and output as octal escape sequences. > So the program's output contains ascii strings like "\302\247", > which I want to display within Emacs as "=A7". Likewise, I want to > feed text containing utf-8 characters such as "=A7" into this program. > So I need to convert these utf-8 characters back to their respective > octal escape sequences. What is the proper way to achieve this? You can try to convert the \302 and \247 to/from bytes by using `read' and `prin1' (since Emacs also uses such a notation for its own Elisp strings). As for converting those bytes to/from chars, just use (en|de)code-coding-string. Stefan