This is not a complete answer, but Xcode has code formatting options under the key XCCodeSenseFormattingOptions.
You can set parameters via the command line or edit plist:
defaults write com.apple.Xcode XCCodeSenseFormattingOptions -dict PreExpressionsSpacing "" PreCommaSpacing " "
Unfortunately, I cannot find any settings for a single indent in the comment blocks, and that makes me crazy!
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