From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Jean-Christophe Helary Newsgroups: gmane.emacs.help Subject: Re: Ctrl-[ ? Date: Thu, 6 Jun 2019 23:08:10 +0900 Message-ID: References: <08AC8151-5911-40FA-8B20-818B839D00AB@traduction-libre.org> <20190606134205.GB14057@tuxteam.de> Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.11\)) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="182566"; mail-complaints-to="usenet@blaine.gmane.org" To: help-gnu-emacs Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Thu Jun 06 16:08:45 2019 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1hYt4M-000lL9-QE for geh-help-gnu-emacs@m.gmane.org; Thu, 06 Jun 2019 16:08:42 +0200 Original-Received: from localhost ([127.0.0.1]:32982 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hYt4L-0001VT-Kj for geh-help-gnu-emacs@m.gmane.org; Thu, 06 Jun 2019 10:08:41 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:50193) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hYt44-0001TP-Ux for help-gnu-emacs@gnu.org; Thu, 06 Jun 2019 10:08:25 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hYt43-0002GD-NW for help-gnu-emacs@gnu.org; Thu, 06 Jun 2019 10:08:24 -0400 Original-Received: from relay10.mail.gandi.net ([217.70.178.230]:60315) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hYt43-000226-G9 for help-gnu-emacs@gnu.org; Thu, 06 Jun 2019 10:08:23 -0400 Original-Received: from [192.168.1.3] (pl32040.ag0304.nttpc.ne.jp [111.89.228.40]) (Authenticated sender: jean.christophe.helary@traduction-libre.org) by relay10.mail.gandi.net (Postfix) with ESMTPSA id B071F240016 for ; Thu, 6 Jun 2019 14:08:17 +0000 (UTC) In-Reply-To: <20190606134205.GB14057@tuxteam.de> X-Mailer: Apple Mail (2.3445.104.11) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 217.70.178.230 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.21 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" Xref: news.gmane.org gmane.emacs.help:120775 Archived-At: > On Jun 6, 2019, at 22:42, tomas@tuxteam.de wrote: >=20 > On Thu, Jun 06, 2019 at 01:49:19PM +0900, Jean-Christophe Helary = wrote: >> I'm finding that Ctrl-[ is associated to Esc but I have nothing like = this in my init file. >>=20 >> Hitting Ctrl-[ in C-h k also gives Esc. >>=20 >> Why is that ? >=20 > If you have a decent computer (and OS): go open a terminal and type > in "man ascii". You'll see two colums: those less than 64 (i.e. > characters with the second bit set to zero) and those 64 and beyond. >=20 > CTRL traditionally makes those "characters" normally non accessible > (because they aren't real characters) accessible by suppressing that > second bit: look to the right column. >=20 > Thus, CTRL-@ -> NULL, CTRL-A -> SOH, etc. (notably, CTRL-G is a bell, > CTRL-C is ETX (end of text), CTRL-D EOT (end of transmission). You > might recognize some conventions coming from that. >=20 > If you go down that two parallel columns, you'll see that ESC is > paired with CTRL-[ >=20 > It's in your computer's reptile brain, not always visible, but > lurking :-) That explains something (thank you) but not why emacs needs to stick to = that. Jean-Christophe Helary ----------------------------------------------- http://mac4translators.blogspot.com @brandelune