bug#2497: 23.0.91; Fails to read UTF-8 on Win2k

[Stefan Monnier <monnier@iro.umontreal.ca>]

>> It works with "C-x RET c utf-8 RET" immediately prior to "C-x C-f".
>> > If it does, then the problem is with guessing the encoding, not with
>> > decoding it.
>> That's also my impression.
>> > Also, what is the default value of buffer-file-coding-system, and was
>> > it the same in 23.0.90?
>> iso-latin-1-dos in 23.0.90 and in 23.0.91.
> Then you shouldn't expect Emacs to guess UTF-8 encoding correctly in
> every single instance.  Distinguishing between UTF-8 and Latin-1 is

The guessing shouldn't give priority to buffer-file-coding-system.
Instead we have the set-coding-system-priority instead.
And IIUC utf-8 should always have a pretty high priority since false
positives are fairly rare.  So this still looks like a real bug.


        Stefan