In Mac OSX there are two kind of keyboard resources: classic and  
unicode. XML .keylayout files only provide a unicode resource and  
Emacs currently only uses the classic resource. As a result keys  
pressed with modifiers will result in a completely wrong key (while  
normal text input works correctly).

I've written a short patch for emacs-20.0.50.2 which solved the issue  
for me. It should be rather save to include since most of the code is  
only executed when no classic resource is available anyway. However  
it will only work on OSX >= 10.2. Is that implied by #define MAC_OSX?  
Some of the code I've seen seemed to suggest that. If not, how do I  
check for it?

regards,
Nikolaj Schumacher