title: Can you put a <c:cout> tag inside the `value` attribute of a <c:set> tag?
body: <p>I want to output the value of the xzy variable into the value of the abc variable.</p>
  
  <pre><code>&lt;c:set var="abc" value="&lt;c:out value="${xyz}"/&gt;"/&gt;
  </code></pre>
  
  <p>I'm getting an error (<code>unterminated &lt;c:set&gt; tag</code>) when I do this.</p>
  
  <p>How do you do this?</p>