title: vim path auto completion, how do I enter a directory?
body: <p>When I want to open a file in vim, I enter :e  to see directories on my disk (set wildmenu). Vim shows me list of directories I have, then I press tab several times to choose directory I need, and when I select that directory (vim highlights it) what should I do to stop completion on current level and enter that directory?</p>
  
  <p>I know that in insert mode completion it's ctrl-y, from vim help file:</p>
  
  <pre><code>                        *complete_CTRL-Y*
  When the popup menu is displayed you can use CTRL-Y to stop completion and
  accept the currently selected entry.  The CTRL-Y is not inserted.  Typing a
  space, Enter, or some other unprintable character will leave completion mode
  and insert that typed character."
  </code></pre>
  
  <p>how to do that in command mode?</p>