I never figured out how the old-style xcode completion was supposed to work but I'm totally digging the new-style completion. It is more like the token field where something like "const char * key" is considered essentially one character. This makes replacing it with whatever you were going to put in there much easier. The update comes from the iPhone SDK which also includes some other things like llvm -- I don't remember seeing that as part of the leopard xcode install but it is definitely here now. I did a quick compile using: /Developer/usr/llvm-gcc-4.2/bin/llvm-gcc-4.2
