title: Git fatal: ambiguous argument unknown revision with two dots rev spec when names contain docs too
body: <pre><code>$ git log v1.10.0..v.11.0
  fatal: ambiguous argument 'v1.10.0..v.11.0': unknown revision or path not in the working tree.
  Use '--' to separate paths from revisions, like this:
  'git &lt;command&gt; [&lt;revision&gt;...] -- [&lt;file&gt;...]'
  
  $ git log v1.10.0..v.11.0 --
  fatal: bad revision 'v1.10.0..v.11.0'
  </code></pre>
  
  <p>On other hand following works:</p>
  
  <pre><code>$ git log master..develop
  </code></pre>
  
  <p>How can I quote dots in revset specs?</p>