title: Put all opened org mode files in a list to be used eventually with helm lists
body: <p>I am trying to put all (opened) org files in a list so I could add them to helm-projectile-switch-to-file lists.</p>
  
  <p>I was able to get to this code:</p>
  
  <pre><code>  (-&gt;&gt; (buffer-list)
         (--select (with-current-buffer it
                     (derived-mode-p 'org-mode)))
         (mapc #'kill-buffer))
  </code></pre>
  
  <p>but this kills the buffers instead of putting them in an aggregated list.</p>