Re: prefer-coding-system, utf-8, iso-8859-2

[Eli Zaretskii]

> Date: Wed, 17 Sep 2003 12:51:41 +0300
> From: Emil Perhinschi <emilper@home.ro>
> 
> prefer-coding-system utf-8
> 
> C-x C-f filename

After these two lines, what does Emacs print if you say

  M-: buffer-file-coding-system RET

?

> set-input-method latin-2-postfix

I think this is your problem: this input method produces iso-8859-2
characters, not Unicode characters (Emacs 21.x doesn't know that they
are the same).  You need to use a Unicode input method, like TeX.  Or
install some add-on package such as ucs-tables, and turn on
unification on encoding.