Thanks to @ddribin for the reminder that Xcode user defaults contains some good stuff.
Apple documentation is here.
Here are the settings I just set different from the defaults (yah, I know, I like lots of space):
defaults write com.apple.Xcode XCCodeSenseFormattingOptions -dict InExpressionsSpacing " " InFunctionArgsSpacing " " InMessageSpacing " " PostColonSpacing " " MessageArgSpacing " " BlockSeparator "\n"
Not sure that’s all how I want it yet, but hopefully that’ll fix a few things I dislike (like when I select something in the help text and it’s pasted in all cramped with no white space.
MessageArgSpacing doesn’t seem to be working… in Xcode v3.1.4 anyway… 😦
Reminder that the application shouldn’t be running when you’re editing user defaults.