Xcode extensions were introduced in Xcode 8, but have seen limited use because there are so many restrictions – you can read some text, modify it, and send some text back, but that’s about it.
Even with those restrictions, Kaunteya Suryawanshi has managed to build something that’s actually quite useful, which is no easy feat. His new extension is called Linex, and comes with a selection of text-editing features to help you do more with your keyboard:
Having better source editor extensions was on my Xcode wish list, but until then give Linex a try.
Paul Hudson is the creator of Hacking with Swift, the most comprehensive series of Swift books in the world. He's also the editor of Swift Developer News, the maintainer of the Swift Knowledge Base, and Mario Kart world champion. OK, so that last part isn't true. If you're curious you can learn more here.