From: Eli Zaretskii <eliz@gnu.org>
To: "Zhu Zihao" <all_but_last@163.com>
Cc: emacs-devel@gnu.org
Subject: Re: Is copy_string_contents in emacs-module.h give us a proper UTF-8 string?
Date: Thu, 08 Oct 2020 10:38:13 +0300 [thread overview]
Message-ID: <83blhd88wq.fsf@gnu.org> (raw)
In-Reply-To: <79bc0bc2.1982.17506d48b4d.Coremail.all_but_last@163.com>
> Date: Thu, 8 Oct 2020 14:09:53 +0800 (CST)
> From: "Zhu Zihao" <all_but_last@163.com>
>
> To support this multitude of characters and scripts, Emacs closely
> follows the “Unicode Standard”. The Unicode Standard assigns a unique
> number, called a “codepoint”, to each and every character. The range of
> codepoints defined by Unicode, or the Unicode “codespace”, is
> ‘0..#x10FFFF’ (in hexadecimal notation), inclusive. Emacs extends this
> range with codepoints in the range ‘#x110000..#x3FFFFF’, which it uses
> for representing characters that are not unified with Unicode and “raw
> 8-bit bytes” that cannot be interpreted as characters. Thus, a
> character codepoint in Emacs is a 22-bit integer.
>
> Will "copy_string_contents" always give us a proper UTF-8 string. Or it will give us a mix of bytevector and
> UTF8?
If the original string includes raw bytes, copy_string_contents will
signal an error.
next prev parent reply other threads:[~2020-10-08 7:38 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-08 6:09 Is copy_string_contents in emacs-module.h give us a proper UTF-8 string? Zhu Zihao
2020-10-08 7:38 ` Eli Zaretskii [this message]
2020-10-08 7:40 ` Robert Pluim
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