From: Eli Zaretskii <eliz@gnu.org>
To: Zhang Haijun <ccsmile2008@outlook.com>
Cc: emacs-devel@gnu.org
Subject: Re: 26.1.50; Emacs can't decode the text file on opening the file, but can decode it on revert-buffer
Date: Sun, 04 Nov 2018 16:49:40 +0200 [thread overview]
Message-ID: <83efc0ew3f.fsf@gnu.org> (raw)
In-Reply-To: <16B3CA28-C893-4854-AD64-1C224C1EDDB2@outlook.com> (message from Zhang Haijun on Sun, 4 Nov 2018 12:28:52 +0000)
> From: Zhang Haijun <ccsmile2008@outlook.com>
> CC: "emacs-devel@gnu.org" <emacs-devel@gnu.org>
> Date: Sun, 4 Nov 2018 12:28:52 +0000
>
> > This file includes null bytes, which by default cause Emacs to disable all decoding, because such files are deemed to be binary files.
> > If you don't like this, set inhibit-null-byte-detection to a non-nil value.
> >
> > This is not a bug, but the intended behavior.
>
> Then why the encoding of the buffer changed after revert-buffer?
It's a subtle bug: revert-buffer reads and decodes the file in small
chunks, so by the time it gets to the furst null byte, it already
decided that the encoding is UTF-8. By contrast, find-file decodes
the entire file at once, so it sees the null bytes when it detects the
encoding.
We had this behavior since Emacs 23.1; Emacs 22 doesn't change the
encoding when this buffer is reverted.
next prev parent reply other threads:[~2018-11-04 14:49 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-04 8:44 26.1.50; Emacs can't decode the text file on opening the file, but can decode it on revert-buffer Zhang Haijun
2018-11-04 9:18 ` Eli Zaretskii
[not found] ` <16B3CA28-C893-4854-AD64-1C224C1EDDB2@outlook.com>
2018-11-04 14:49 ` Eli Zaretskii [this message]
[not found] ` <B213388B-58E6-4F5B-8CE8-79AC5AD3062B@outlook.com>
2018-11-04 17:13 ` Eli Zaretskii
2018-11-05 8:59 ` Zhang Haijun
2018-11-05 9:00 ` Zhang Haijun
2018-11-05 9:00 ` Zhang Haijun
2018-11-05 9:39 ` Phil Sainty
2018-11-05 10:10 ` Stephen Berman
2018-11-05 14:08 ` Zhang Haijun
2018-11-05 15:02 ` Stephen Berman
2018-11-05 16:00 ` Eli Zaretskii
2018-11-06 1:39 ` Zhang Haijun
2018-11-06 3:31 ` Eli Zaretskii
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