title: Undo all changes since opening buffer in vim
body: <p>How can I undo all changes since opening a buffer? I imagine there may be some form of <code>:earlier</code> that does this.</p>
  <p><strong>UPDATE</strong>: Many are suggesting solutions for traversing to earlier file writes. This isn't what I asked for. I want to return to the original state the file was in when I originally loaded it into a buffer, no matter how many writes were made since then.</p>