title: How can I insert an HTML comment with an interpolated expression?
body: <p>I'd like to add an HTML comment with an interpolated expression within an ng-repeat block.  However, when I try to do this, the expression is not interpolated.  For example:</p>
  
  <pre><code>&lt;tr ng-repeat="item in items"
      &lt;!-- ID that I don't want the user to see, but want for debugging = {{item.id}} --&gt;
      &lt;td&gt;{{item.prettyName}}&lt;/td&gt;
      &lt;td&gt;{{item.someProperty}}&lt;/td&gt;
      &lt;td&gt;{{item.someOtherProperty}}&lt;/td&gt;
  &lt;/tr&gt;
  </code></pre>
  
  <p>When I view the DOM (i.e. the Elements tab in Chrom DevTools), I just see the uninterpolated string ("{{item.id}}") instead of the interpolated value.</p>
  
  <p>What's the correct syntax here?</p>