From: Jean-Christophe Helary <jean.christophe.helary@traduction-libre.org>
To: Emacs developers <emacs-devel@gnu.org>
Subject: Re: evaluating numbers
Date: Fri, 15 Nov 2019 19:36:21 +0900 [thread overview]
Message-ID: <BD1194BA-DBC9-48BB-9EE8-80DDAD6DCA59@traduction-libre.org> (raw)
In-Reply-To: <83eeya5yl6.fsf@gnu.org>
> On Nov 14, 2019, at 23:20, Eli Zaretskii <eliz@gnu.org> wrote:
>
>> From: Jean-Christophe Helary <jean.christophe.helary@traduction-libre.org>
>> Date: Thu, 14 Nov 2019 20:35:17 +0900
>>
>>> It's neither, because characters are integers in Emacs, and a
>>> character is identical to its codepoint.
>>
>> How can I understand that ?
>
> By reading the documentation, of course.
I wish.
>> I mean, what part of the documentation, or the code, or anything, is there to help people grasp this notion ?
>
> ELisp section "String and Character Basics":
>
> A character is a Lisp object which represents a single character of
> text. In Emacs Lisp, characters are simply integers; whether an integer
> is a character or not is determined only by how it is used. *Note
> Character Codes::, for details about character representation in Emacs.
>
> And the cross-reference leads you to a much more detailed description
> of these issues.
"In Emacs Lisp, characters are simply integers; whether an integer is a character or not is determined only by how it is used."
([Character Codes] has seemingly nothing relevant)
[Character Type]
"A character in Emacs Lisp is nothing more than an integer."
"In other words, characters are represented by their character codes."
"Since characters are really integers, the printed representation of a character is a decimal number."
(btw: "Emacs provides several types of escape syntax that you can use to specify non-ASCII text characters." is not true since *any* character can use those escape syntaxes.)
Whatever I read about characters starts with the statement "Characters are integers" or a differently worded equivalent.
There is nothing that says why or how.
Jean-Christophe Helary
-----------------------------------------------
http://mac4translators.blogspot.com @brandelune
next prev parent reply other threads:[~2019-11-15 10:36 UTC|newest]
Thread overview: 95+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-07 9:43 evaluating numbers Jean-Christophe Helary
2019-11-07 9:57 ` Stephen Berman
2019-11-07 10:20 ` Jean-Christophe Helary
2019-11-07 10:30 ` Stephen Berman
2019-11-07 10:40 ` Jean-Christophe Helary
2019-11-07 14:39 ` Eli Zaretskii
2019-11-08 0:36 ` Jean-Christophe Helary
2019-11-08 10:03 ` Eli Zaretskii
2019-11-08 12:23 ` Jean-Christophe Helary
2019-11-08 13:22 ` Stefan Monnier
2019-11-09 0:20 ` Jean-Christophe Helary
2019-11-09 7:24 ` Eli Zaretskii
2019-11-08 13:49 ` Eli Zaretskii
2019-11-09 0:15 ` Jean-Christophe Helary
2019-11-09 7:22 ` Eli Zaretskii
2019-11-09 11:18 ` Jean-Christophe Helary
2019-11-09 11:48 ` Eli Zaretskii
2019-11-10 0:59 ` Jean-Christophe Helary
2019-11-10 8:06 ` Andreas Schwab
2019-11-10 20:52 ` Juri Linkov
2019-11-12 20:28 ` Juri Linkov
2019-11-12 22:05 ` Drew Adams
2019-11-12 22:21 ` Eli Zaretskii
2019-11-12 23:30 ` Drew Adams
2019-11-13 8:10 ` Eli Zaretskii
2019-11-13 14:47 ` Drew Adams
2019-11-14 12:45 ` Eli Zaretskii
2019-11-14 22:50 ` Juri Linkov
2019-11-14 23:40 ` Noam Postavsky
2019-11-15 8:14 ` Eli Zaretskii
2019-11-14 9:22 ` Eli Zaretskii
2019-11-14 9:46 ` Yuri Khan
2019-11-14 11:36 ` Jean-Christophe Helary
2019-11-14 13:55 ` Stefan Monnier
2019-11-14 13:59 ` Noam Postavsky
2019-11-14 14:17 ` Stefan Monnier
2019-11-14 21:44 ` Juanma Barranquero
2019-11-14 14:03 ` Andreas Schwab
2019-11-14 14:10 ` Eli Zaretskii
2019-11-14 17:10 ` Paul Eggert
2019-11-14 18:32 ` Eli Zaretskii
2019-11-14 18:39 ` Eli Zaretskii
2019-11-15 8:32 ` Štěpán Němec
2019-11-15 14:54 ` Robert Pluim
2019-11-15 15:16 ` Eli Zaretskii
2019-11-15 15:32 ` Eli Zaretskii
2019-11-15 15:55 ` Robert Pluim
2019-11-15 16:00 ` Robert Pluim
2019-11-15 16:11 ` Lars Ingebrigtsen
2019-11-15 16:33 ` Robert Pluim
2019-11-15 16:13 ` Eli Zaretskii
2019-11-17 2:15 ` Richard Stallman
2019-11-17 20:02 ` Robert Pluim
2019-11-18 16:25 ` Eli Zaretskii
2019-11-18 16:54 ` Robert Pluim
2019-11-18 17:05 ` Eli Zaretskii
2019-11-20 13:00 ` Robert Pluim
2019-11-20 16:40 ` Eli Zaretskii
2019-11-20 17:09 ` Robert Pluim
2019-11-20 17:45 ` Eli Zaretskii
2019-11-19 6:08 ` Richard Stallman
2019-11-19 9:50 ` Robert Pluim
2019-11-15 15:53 ` Robert Pluim
2019-11-15 16:13 ` Eli Zaretskii
2019-11-15 16:43 ` Robert Pluim
2019-11-15 16:59 ` Eli Zaretskii
2019-11-16 20:40 ` Juri Linkov
2019-11-17 17:34 ` Eli Zaretskii
2019-11-17 21:16 ` Juri Linkov
2019-11-14 22:56 ` Juri Linkov
2019-11-09 16:03 ` Stefan Monnier
2019-11-10 0:22 ` Jean-Christophe Helary
2019-11-10 4:47 ` Stefan Monnier
2019-11-13 23:02 ` Jean-Christophe Helary
2019-11-14 13:52 ` Stefan Monnier
2019-11-14 9:20 ` Eli Zaretskii
2019-11-14 11:35 ` Jean-Christophe Helary
2019-11-14 13:37 ` Noam Postavsky
2019-11-14 14:20 ` Eli Zaretskii
2019-11-15 10:36 ` Jean-Christophe Helary [this message]
2019-11-15 13:03 ` Eli Zaretskii
2020-04-28 14:52 ` Jean-Christophe Helary
2020-04-28 15:05 ` Eli Zaretskii
2020-04-28 17:28 ` Paul Eggert
2020-04-28 23:16 ` Jean-Christophe Helary
2020-04-29 0:08 ` Paul Eggert
2020-04-29 0:21 ` Jean-Christophe Helary
2020-04-29 7:08 ` Eli Zaretskii
2020-04-29 8:00 ` Jean-Christophe Helary
2020-04-29 3:23 ` Richard Stallman
2020-04-29 3:49 ` Jean-Christophe Helary
2020-04-29 3:51 ` Stefan Monnier
2020-04-29 10:09 ` Po Lu
2020-04-30 2:34 ` Richard Stallman
2020-04-30 3:04 ` Stefan Monnier
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