title: Pandoc: Converting markdown to HTML, syntax highlighter
body: <p>I'm converting markdown to HTML, and I want to include syntax-highlighted code.</p>
  
  <p>I'm working from some markdown that contains syntax like:</p>
  
  <pre><code>  ~~~ {.c}
    long factorial (int n)
    {
      long result = 1;
      while (n &gt; 1)
        result *= n--;
      return result;
    }
    ~~~
  </code></pre>
  
  <p>but I don't know which syntax highlighting extension was used to process this syntax. What's a good extension?</p>