[tex-live] xelatex + files with non-ascii chars

[Ulrike Fischer]

When I try to compile a "büro.tex" with xelatex I get a quite
curious error (miktex on win xp) 

I:\Z-Test>xelatex büro
This is XeTeX, Version 3.1415926-2.3-0.9997.5 (MiKTeX 2.9)
entering extended mode
! Undefined control sequence.
<*> b^^?^^³
           ro
? x
No pages of output.

I get a similar error with miktex 2.8 on a win7 (only the umlaut is
encoded differently on the terminal). 


I'm not sure if this a problem of the miktex binary I suspect more a
problem in the format files. Could please someone try what happens
in TeXLive?


-- 
Ulrike Fischer