title: how to insert $ in lstinline
body: <p>when translate some code in lstinline, I find that</p>
  
  <p><code>
  \passthrough{\lstine!xxx!}
  </code></p>
  
  <p>I want to insert $, I know in latex should be </p>
  
  <p><code>
  lstinline !$\$$!
  </code></p>
  
  <p>however, I used in markdown, I input like</p>
  
  <p><code>
  `$` =&gt; lstinline !$!
  </code></p>
  
  <p><code>
  `$\$$` =&gt; lstinline !$\\$$!
  </code></p>
  
  <p>anyone knows how to insert $ in markdown? Thank you.</p>
  
  <p>ref:<a href="https://github.com/jgm/pandoc/issues/4713" rel="nofollow noreferrer">https://github.com/jgm/pandoc/issues/4713</a></p>