GNU bug report logs - #1935
describe-char does not show raw bytes as such

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From: Juanma Barranquero <lekktu <at> gmail.com>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: Emacs developers <emacs-devel <at> gnu.org>,
        Emacs Bug Tracker <submit <at> debbugs.gnu.org>
Subject: bug#1935: No coding system in the modeline for unibyte buffers.
Date: Sat, 17 Jan 2009 03:24:41 +0100

On Sat, Jan 17, 2009 at 03:11, Stefan Monnier <monnier <at> iro.umontreal.ca> wrote:

> Actually the raw-text part of a multibyte buffer only affects operation
> when it is saved and loaded, so it can contain characters that are
> not bytes.

Yes, I understand that.

>> But I confess I'm puzzled why
>
>>  M-x find-file-binary test.txt <RET>
>>  M-: enable-multibyte-characters <RET>  => nil
>>  C-u C-x =    ; over ñ
>
>>         character:   (241, #o361, #xf1)
>> preferred charset: iso-8859-1 (Latin-1 (ISO/IEC 8859-1))
>>        code point: 0xF1
>>            syntax: w  which means: word
>>          category: j:Japanese l:Latin
>>       buffer code: #xC3 #xB1
>>         file code: #xC3 #xB1 (encoded by coding system no-conversion)
>
>> If I'm hopelessly wrong, I'm quite ready to be enlightened (and
>> perhaps the docs will need work).
>
> Indeed that's a bug in C-u C-x =.  It should pay attention to the
> buffer's enable-multibyte-characters and then present #xf1 not as
> a latin-1 char but as a raw-byte.

Well, that makes sense. I'm filing the bug report.

    Juanma

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