From: Eli Zaretskii <eliz@gnu.org>
To: help-gnu-emacs@gnu.org
Subject: Re: Ctrl-[ ?
Date: Sun, 09 Jun 2019 09:37:04 +0300 [thread overview]
Message-ID: <834l4zclin.fsf@gnu.org> (raw)
In-Reply-To: <63F9D100-CD25-445B-8184-93A25DB0FC38@comcast.net> (message from Francis Belliveau on Sat, 8 Jun 2019 17:03:06 -0400)
> From: Francis Belliveau <f.belliveau@comcast.net>
> Date: Sat, 8 Jun 2019 17:03:06 -0400
>
> It is my assumption in what I say below that EMACS is trusting the OS to perform the keystroke translations for it.
This is only correct up to a point. Modern GUI environments allow
Emacs to distinguish between, say, Delete the function key and DEL the
ASCII octal 177 code. They also allow it to distinguish between an
ASCII key pressed together with Ctrl and the corresponding lower ASCII
control code. Emacs does the conversion to conflate those, at least
by default, because otherwise most users will be flabbergasted to
learn that, say, C-[ doesn't produce the same effect as ESC.
Documenting these conversion is not easy, because many of them have to
do with deep internals of character and key representation in various
parts of Emacs. For example, Ctrl and Meta modifiers have 2 different
representations, and Emacs by default goes out of its way to hide this
difference.
prev parent reply other threads:[~2019-06-09 6:37 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
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 [this message]
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