Just discovered this also. I’m out. What a disappointment.

Into shape

Don’t forget that Vim also keeps every tree of undo history. Wrote someone one way, wanted to try another way, and changed your mind? Switch to the other undo future! Change your mind again? Go back!

And there’s persistent undo, where your undo history is written a file. Quit Vim, power off your machine for 5 years, power it back on, and you can still undo!

Or just: u