[XeTeX] Correct LaTeX-logo – how?

[Jonathan Kew]

Dear Joanna,

>>
>> If you find that a particular package is redefining \TeX, etc., and
>> you want to preserve the original definition that doesn't mess with
>> the typeface, you might be able to do something like this in your
>> preamble:
>>
>> 	\let\originalTeX = \TeX
>> 	\usepackage{some-package-that-redefines-TeX}
>> 	\let\TeX = \originalTeX
>
> It doesn't work for me, I'm getting this error:
>
> ! LaTeX Error: Missing \begin{document}.

Sure enough, this doesn't work with the babel package. I can put  
other \usepackage statements in there without problems, but babel  
must be doing something tricker. Sorry!

I guess this is a question for the LaTeX experts.... what's the best  
way to overcome Babel's redefinition of the logos? It's probably  
happening because Babel tries to ensure that the logos are set with a  
certain font encoding (in case you're using Russian or something for  
your main text), but this means that it defeats fontspec's use of the  
"U" encoding for Unicode fonts.

What we really need is a package that handles hyphenation-language  
switching, generated text ("Chapter", "Figure", etc), but doesn't try  
to mess with input and font encodings, leaving XeTeX free to deal  
with Unicode everywhere. Anyone care to work on such a "mini-Babel"  
package designed to work more smoothly with XeTeX? :)

JK