Am 06.07.2013 21:15, schrieb Eli Zaretskii:
>> Date: Sat, 06 Jul 2013 22:12:44 +0300
>> From: Eli Zaretskii <eliz@gnu.org>
>> Cc: 14805@debbugs.gnu.org
>>
>>> Date: Sat, 06 Jul 2013 20:58:53 +0200
>>> From: Andreas Röhler <andreas.roehler@easy-emacs.de>
>>> CC: 14805@debbugs.gnu.org
>>>
>>> Am 06.07.2013 14:50, schrieb Eli Zaretskii:
>>>>> Date: Sat, 06 Jul 2013 14:25:28 +0200
>>>>> From: Andreas Röhler <andreas.roehler@easy-emacs.de>
>>>>>
>>>>> Am 06.07.2013 14:02, schrieb Andreas Röhler:
>>>>>> Emacs -Q
>>>>>>
>>>>>> Opened a buffer with ending ".htm". German umlauts are mangled.
>>>>>>
>>>>>>     Börse, which should read Börse
>>>>>>
>>>>>
>>>>> File contains
>>>>>
>>>>> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
>>>>
>>>> So the file says it's in latin-1, but the actual contents are in
>>>> UTF-8, is that right?
>>>>
>>>> Anyway, can you try with the latest trunk?  June 12 is almost a month
>>>> ago.
>>>>
>>>
>>> Same with Emacs built from trunk today.
>>
>> Then please post the minimal file that exhibits the problem.
>
> Actually, never mind, I see this myself.
>
> So what would you expect Emacs to do with a file that claims to be in
> Latin-1, but isn't?
>

Hmm, seems not a bug on Emacs side.
A part of the file attached anyway.