title: Mapping a default key binding in vim
body: <p>I want to remap <code>Ctrl-]</code> which is used for jumping to the tags to another key binding.</p>
  
  <p>These mappings work:</p>
  
  <pre><code>:map &lt;F2&gt; &lt;C-]&gt;
  :map &lt;A-1&gt; &lt;C-]&gt;
  </code></pre>
  
  <p>But this mapping doesn't work:</p>
  
  <pre><code>:map &lt;C-1&gt; &lt;C-]&gt;
  </code></pre>
  
  <p>What might be the reason for this?</p>