GNU bug report logs - #6971
24.0.50.1: non-ascii chars appear as numbers

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Message #11 received at 6971-done <at> debbugs.gnu.org (full text, mbox):

From: Andreas Röhler <andreas.roehler <at> easy-emacs.de>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 6971-done <at> debbugs.gnu.org
Subject: Re: bug#6974: Emacs doesn't like Swedish ä (on w32)
Date: Sat, 04 Sep 2010 10:29:09 +0200

Am 04.09.2010 10:16, schrieb Eli Zaretskii:
>> Date: Sat, 04 Sep 2010 09:30:55 +0200
>> From: Andreas Röhler<andreas.roehler <at> easy-emacs.de>
>> CC: bug-gnu-emacs <at> gnu.org
>>
>>> Please post the file as an attachment.
>>>
>>
>> Attached.
>
> Thanks.  Here's your culprit:
>
>>> \240 (autoload 'muse-mode "muse-mode" "" t)
>
> You have literal \240 characters in the file, which are invalid UTF-8
> sequences.
>

Thanks a lot for your efforts.
Question remains how that might happen.

Why Emacs could not prevent that.

See too possible causes

- chars from a auto-saved-file
- something pasted from the net, which had some MS- encoding etc.

If thats real so far, both cases are not that uncommon, think Emacs 
should find a way to deal with.


> This file has also other similar problems, like this one:
>
>    Du kannst es nat\365\202\211\205\365\200\210\246\357\275\357\275\274rlich auch unter Linux ausprobieren, z.B.:
>
> I believe the 4th word should have been "natűrlich", and the invalid
> long byte sequence instead of ű (which Emacs decodes into some
> Japanese Kanji character that cannot be encoded by UTF-8) is the
> result of multiple saving of this file with incorrect encoding.
>
> To fix all this corruption, I suggest the following steps:
>
>    1) C-x RET c utf-8 RET C-x C-f befehle.txt RET
>
>    2) M-: (unencodable-char-position (point) (point-max) 'utf-8) RET
>
>    3) Go to the position shown by the previous command, and edit the
>       file to replace invalid bytes with valid characters.
>
>    4) Move point past the corrected portion.
>
>    5) Go back to 2.  When unencodable-char-position returns nil, you
>       are done; save the file.
>
> I'm closing bug #6971 with this message, since there's no Emacs bug
> here.
>

Hm,

as I didn't see that error for a long time, still suspect Emacs 24 doing 
something not that clever 23 does.

Andreas

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