title: How to copy the multiline value of a cell without quotation mark?
body: <p>I have a cell with a multiline value. For example:</p>
  <pre><code>Testing line 1
  Testing line 2
  </code></pre>
  <p>When I copy it and paste it at any text editor, there are quotation mark at the front and at the end of the value. That is</p>
  <pre><code>&quot;Testing line 1
  Testing line 2&quot;
  </code></pre>
  <p>How can I get rid of it?</p>