title: Save file in vim before search with FZF
body: <p>I have this mapping:</p>
  
  <pre><code>nnoremap &lt;silent&gt; &lt;leader&gt;&lt;space&gt; :Files&lt;CR&gt;
  </code></pre>
  
  <p>This works fine, but when I have a changed file already open, I get an error when I switch to a new file.</p>
  
  <p>Is it possible to save the file before starting fzf?
  I tried something like this, but this doesn't work if I don't have a file open. (start vi without file and start fzf)</p>
  
  <pre><code>nnoremap &lt;silent&gt; &lt;leader&gt;&lt;space&gt; :w&lt;CR&gt;:Files&lt;CR&gt;
  </code></pre>