Re: Garbage display when NULL in file

[Gregory Sharp]

> > In my current debian emacs (22.2.1), emacs seems to be incorrectly
> > detecting the codeset for files with mixed ascii/data.  The problem
> > is that I get a garbage display (squares, kanji, etc.).  How can
> > I tell emacs not to detect the codeset (or revert to ascii/utf8
> > after it autodetects)?
> 
>   C-x RET c us-ascii RET C-x C-x your-file RET
> 
> Does this do what you want? 

Yes!  Thank you for the hint.  The following also works:

  C-x RET c utf-8 RET C-x C-f your-file RET

Why doesn't emacs use utf-8 (my locale codeset) for this file?  
Can I make this behavior the default?
-- 
Greg Sharp
gregsharp@geocities.com