From: <tomas@tuxteam.de>
To: help-gnu-emacs@gnu.org
Subject: Re: Ctrl-[ ?
Date: Thu, 6 Jun 2019 15:42:05 +0200 [thread overview]
Message-ID: <20190606134205.GB14057@tuxteam.de> (raw)
In-Reply-To: <08AC8151-5911-40FA-8B20-818B839D00AB@traduction-libre.org>
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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.
>
> Hitting Ctrl-[ in C-h k also gives Esc.
>
> Why is that ?
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.
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.
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.
If you go down that two parallel columns, you'll see that ESC is
paired with CTRL-[
It's in your computer's reptile brain, not always visible, but
lurking :-)
Cheers
-- t
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next prev parent reply other threads:[~2019-06-06 13:42 UTC|newest]
Thread overview: 107+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-06 4:49 Ctrl-[ ? Jean-Christophe Helary
2019-06-06 7:26 ` Jean-Christophe Helary
2019-06-06 8:13 ` Andreas Schwab
2019-06-06 10:12 ` Eli Zaretskii
2019-06-06 12:37 ` Jean-Christophe Helary
2019-06-06 13:02 ` Eli Zaretskii
2019-06-06 13:28 ` Jean-Christophe Helary
2019-06-06 12:44 ` Mattias Engdegård
2019-06-06 13:01 ` Eli Zaretskii
2019-06-06 13:25 ` Jean-Christophe Helary
2019-06-06 14:35 ` Eli Zaretskii
2019-06-07 6:21 ` Marcin Borkowski
2019-06-07 8:34 ` joakim
2019-06-06 13:26 ` Clément Pit-Claudel
2019-06-06 13:32 ` Juanma Barranquero
2019-06-06 14:37 ` Eli Zaretskii
2019-06-06 15:01 ` Jean-Christophe Helary
2019-06-06 15:33 ` Clément Pit-Claudel
2019-06-06 17:28 ` Eli Zaretskii
2019-06-06 17:33 ` Clément Pit-Claudel
2019-06-06 17:48 ` Eli Zaretskii
2019-06-06 18:34 ` Eli Zaretskii
2019-06-06 18:48 ` Clément Pit-Claudel
2019-06-06 19:18 ` Eli Zaretskii
2019-06-07 15:02 ` Clément Pit-Claudel
2019-06-07 19:44 ` Eli Zaretskii
2019-06-07 21:01 ` Clément Pit-Claudel
2019-06-07 23:48 ` Jean-Christophe Helary
2019-06-08 6:23 ` Eli Zaretskii
2019-06-12 8:08 ` Søren Pilgård
2019-06-12 8:56 ` Ergus
2019-06-06 18:55 ` Noam Postavsky
2019-06-10 0:23 ` Stefan Kangas
2019-06-10 0:42 ` Jean-Christophe Helary
2019-06-10 16:42 ` Eli Zaretskii
2019-06-11 15:36 ` Michael Welsh Duggan
2019-06-11 15:55 ` Eli Zaretskii
2019-06-11 16:31 ` Yuri Khan
2019-06-12 12:22 ` Stefan Kangas
2019-06-12 12:14 ` Stefan Kangas
2019-06-12 13:12 ` Alan Mackenzie
2019-06-12 13:38 ` Óscar Fuentes
2019-06-06 13:28 ` Óscar Fuentes
2019-06-06 14:00 ` Drew Adams
2019-06-06 12:58 ` Stefan Monnier
2019-06-06 12:58 ` Ralph Seichter
2019-06-06 13:42 ` tomas [this message]
2019-06-06 14:08 ` Jean-Christophe Helary
2019-06-06 14:25 ` Stefan Monnier
2019-06-06 15:27 ` Jean-Christophe Helary
2019-06-06 18:29 ` Noam Postavsky
2019-06-06 23:08 ` Jean-Christophe Helary
2019-06-06 23:26 ` Noam Postavsky
2019-06-06 23:35 ` Jean-Christophe Helary
2019-06-07 6:24 ` Eli Zaretskii
2019-06-07 11:43 ` Noam Postavsky
2019-06-07 13:16 ` Jean-Christophe Helary
2019-06-07 22:04 ` Stefan Monnier
2019-06-08 6:22 ` Eli Zaretskii
2019-06-08 14:14 ` Stefan Monnier
2019-06-07 3:36 ` Emanuel Berg via help-gnu-emacs
2019-06-07 4:30 ` Jean-Christophe Helary
2019-06-07 4:43 ` Emanuel Berg via help-gnu-emacs
2019-06-07 5:04 ` Jean-Christophe Helary
2019-06-07 6:15 ` Eli Zaretskii
2019-06-07 8:04 ` Óscar Fuentes
2019-06-07 8:44 ` Eli Zaretskii
2019-06-07 13:19 ` Jean-Christophe Helary
2019-06-07 13:54 ` Noam Postavsky
2019-06-07 14:23 ` Jean-Christophe Helary
2019-06-07 15:17 ` Noam Postavsky
2019-06-07 13:45 ` Óscar Fuentes
2019-06-07 14:20 ` Eli Zaretskii
2019-06-07 18:20 ` Óscar Fuentes
2019-06-07 20:16 ` Eli Zaretskii
2019-06-07 16:30 ` tomas
2019-06-08 0:05 ` Francis Belliveau
2019-06-08 0:31 ` Óscar Fuentes
2019-06-08 8:44 ` tomas
2019-06-08 11:48 ` 조성빈 via help-gnu-emacs
2019-06-08 11:56 ` tomas
2019-06-08 13:06 ` Óscar Fuentes
2019-06-08 13:30 ` Eli Zaretskii
2019-06-08 13:54 ` Jean-Christophe Helary
2019-06-08 14:03 ` tomas
2019-06-08 14:22 ` Jean-Christophe Helary
2019-06-08 15:42 ` Eli Zaretskii
2019-06-09 0:52 ` Jean-Christophe Helary
2019-06-09 6:19 ` Eli Zaretskii
2019-06-09 6:51 ` Jean-Christophe Helary
2019-06-08 13:58 ` tomas
2019-06-08 19:40 ` Óscar Fuentes
2019-06-08 20:09 ` Eli Zaretskii
2019-06-08 20:28 ` tomas
2019-06-08 21:03 ` Francis Belliveau
2019-06-08 21:38 ` Óscar Fuentes
2019-06-09 0:25 ` Stefan Monnier
2019-06-09 1:24 ` Óscar Fuentes
2019-06-18 22:25 ` Stefan Monnier
2019-06-11 23:05 ` Francis Belliveau
2019-06-14 6:51 ` Stefan Monnier
2019-06-14 12:06 ` [offtopic] " Van L
2019-06-14 12:24 ` tomas
2019-06-15 9:12 ` Van L
2019-06-15 9:44 ` tomas
2019-06-15 12:38 ` Van L
2019-06-09 6:37 ` Eli Zaretskii
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