title: Vim: list free keybindings
body: <p>Is there some way to list unused keybinds?
  I guess if the answer is no, it would be a good feature-request (especially for these undecided types like myself).</p>
  
  <p>Edit:
  To make it more precise, I know you can list bindings with:</p>
  
  <pre><code>:map
  :nmap
  :imap
  </code></pre>
  
  <p>FFI see:</p>
  
  <pre><code>:help map-modes
  </code></pre>
  
  <p>and manually check whether given binding is used by typing e.g.:</p>
  
  <pre><code>:help Ctrl-w
  :help ^w
  </code></pre>
  
  <p>FFI see:</p>
  
  <pre><code>:help map
  </code></pre>