title: How to disable auto-quotes and auto-brackets in Jupyter 5.0
body: <p>I upgraded Jupyter to the latest vesion, 5.0, and it looks like my front-end configuration stopped working.</p>
  
  <p>I don't understand why Jupyter comes with auto closing quotes and brackets by default, which I find pretty annoying. So, at each version I have to change the settings to disable it.</p>
  
  <p>It used to work by creating a file <code>~/.jupyter/custom/custom.js</code> and adding the next JavaScript code:</p>
  
  <pre><code>require(['notebook/js/codecell'], function (codecell) {
    codecell.CodeCell.options_default.cm_config.autoCloseBrackets = false;
  })
  </code></pre>
  
  <p>I've read that since Jupyter 4 this code could be changed by:</p>
  
  <pre><code>IPython.CodeCell.options_default.cm_config.autoCloseBrackets = false;
  </code></pre>
  
  <p>But it looks like in Jupyter 5, the two previous options stopped working.</p>
  
  <p>The documentation I found regarding the front-end configuration is not helpful (I'll be happy to improve it once I understand it):</p>
  
  <p><a href="http://jupyter-notebook.readthedocs.io/en/latest/frontend_config.html#frontend-config" rel="noreferrer">http://jupyter-notebook.readthedocs.io/en/latest/frontend_config.html#frontend-config</a></p>
  
  <p>Can anyone help me understand how to disable auto-brackets and auto-quotes in Jupyter 5 please?</p>
  
  <p>This is the exact version I'm running:</p>
  
  <p><a href="https://i.stack.imgur.com/M12B4.png" rel="noreferrer"><img src="https://i.stack.imgur.com/M12B4.png" alt="enter image description here"></a></p>