Various sample commands to implement Xcode Source Editor Extension
Xcode Source Editor Extension is strictly restricted in its sandbox. This project introduces the way to jump over the barrier.
Associated presentation: Xcode Source Editor Extensionの世界 (Japanese) https://speakerdeck.com/takasek/20170916-number-iosdc
Swift 4
Using and Extending the Xcode Source Editor - WWDC 2016 - Videos - Apple Developer https://developer.apple.com/videos/play/wwdc2016/414/
Cocoa Interprocess Communication with XPC - WWDC 2012 - Videos - Apple Developer https://developer.apple.com/videos/play/wwdc2012/241/
MIT