The object-set-name-string function of eieio has changed to eieio-object-set-name-string, at one point my code (ergoemacs-mode) depended on that function, so I had to use a macro to pick the right version for different versions of emacs. 

 

You may keep it or change it as you wish.  Today ergoemacs-mode no longer uses this function.

 

Just an FYI, prompted by Stefan.

 

Matt