title: Can't map <Leader>z to <C-W>|<C-W>_ in vim
body: <p>I tried to add the following line in my <code>vimrc</code></p>
  
  <pre><code>nnoremap &lt;Leader&gt;z &lt;C-w&gt;|&lt;C-w&gt;_
  </code></pre>
  
  <p>But when vim starts up, it gives me an error:</p>
  
  <blockquote>
    <p>E488: Trailing characters: _</p>
  </blockquote>
  
  <p>Then I tried to change the sequence of my commands, so I changed the mapping to:</p>
  
  <pre><code>nnoremap &lt;Leader&gt;z &lt;C-W&gt;_&lt;C-W&gt;|
  </code></pre>
  
  <p>There are no errors after this change, but it did not behave as I want to. What I want is to hit <code>&lt;Leader&gt;z</code> then other split windows would be minimized.</p>