Persistent undo is my favorite new feature. The ability to close vim, reopen a file later, and then have all of the undo history still available is awesome. (Al

Persistent undo is my favorite new feature. The ability to close vim, reopen a file later, and then have all of the undo history still available is awesome. (Alternatively, I used to suspend vim instead of actually quit.) To turn on persistent undo, I created a new directory called ~/.undo to store all of the undo history so that my working directories wouldn't get cluttered. Then in .vimrc, I add: set undofile set undodir=~/.undo