c-[ is Escape (displayed as ^[ in vim). Also, it isn't obvious for beginners where c-[ is located on non-English keyboards. And it's two keys to press. I'd stil

c-[ is Escape (displayed as ^[ in vim). Also, it isn't obvious for beginners where c-[ is located on non-English keyboards. And it's two keys to press. I'd still prefer Esc. The fact that the key is usally located outside of the main typing area reflect its meaning. Get me out of here.