title: vim auto inserting inserted text
body: <p>Whenever I press <kbd>Esc</kbd> it inserts previously inserted characters when in Edit mode. What feature is this? How can I disable it?</p>
  
  <p>Also when editing if I haven't typed anything and I press <kbd>Esc</kbd>, I see the following warning:  <code>"E29: No inserted text yet"</code>.</p>