title: put haml tags inside link_to helper
body: <p>is it possible to add html-content inside a link_to helper in HAML?</p>
  
  <p>i tried this, but all i get is a syntax error:</p>
  
  <pre><code>= link_to "Other page", "path/to/page.html"
      %span.icon Arrow
  </code></pre>
  
  <p>expected output:</p>
  
  <pre><code>&lt;a href="path/to/page.html"&gt;Other Page&lt;span class="icon"&gt;Arrow&lt;/span&gt;&lt;/a&gt;
  </code></pre>