Use [Pathogen]. Don't use pathogen? Start.
hg clone http://bitbucket.org/ sjl/gundo.vim ~/.vim/bundle/gundo
-There's a git mirror if you prefer:
- git clone http://github.com/sjl/gundo.vim.git ~/.vim/bundle/gundo
-Add a mapping to your `~/.vimrc` (change the key to suit your taste):
- nnoremap <F5> :GundoToggle<CR>
-Run `:help gundo` for the full docs. Here's the in-a-nutshell version.
-When you're editing a file you can bring up the undo graph for that file with
-`<F5>` (or whatever key you mapped it to).
-Press `<F5>` again to close the undo graph and return to your file.
-Use `j` and `k` to move up and down the graph. The preview pane will update with
-a diff of the change made by the undo state you're currently on.
-Press return to revert the file's contents to that undo state and return to the
+GPLv2+, just like Mercurial.