You can, if you like, install the 'vundo' package, which gives you a tree-based overview of your undo history, making it easy to switch between branches and go

You can, if you like, install the 'vundo' package, which gives you a tree-based overview of your undo history, making it easy to switch between branches and go backward and forward. It's basically like the undo-tree view for the default undo mechanism.