Update: A 64-bit version of Emacs can now be compiled from source. With the release of Snow Leopard, the included Emacs binary was not compiled with Carbon or Cocoa support. So, if a native OS X GUI is desired, compiling your own Emacs.app may be worthwhile. That’s the route I’ve taken. The Emacs developers are making improvements to the Cocoa version while dropping support for Carbon, and a 64-bi