The latest released Emacs version is 22.3 (September 5, 2008). If you’re building Emacs 23 from CVS on a Mac, you may have noticed that non-ASCII keys stopped working correctly. It turns out that ages ago I added the following to my .emacs file:
(set-keyboard-coding-system 'mac-roman)
I guess I added it for CarbonEmacsPackage back in the days.
#Emacs