wildcard route demo

<!layout /.includes/layout.htex>
<article>
  <h2>wildcard route demo</h2>
  <form id="form" action="." method="get" onsubmit="return false;">
    <input id="path" type="text" name="path" placeholder="path" value="/demos/wildcard/write_your_path_here">
    <button type="submit" onclick="window.location.href=document.getElementById('path').value;">go to path</button>
  </form>
</article>
<article>
  <code>wildcard/index.htex</code> source file:
  <pre><code class="language-html"><!include-escaped index.htex></code></pre>
</article>
<article>
  <code>wildcard/_.htex</code> source file that receives all other routes in <code>/demos/wildcard/</code>:
  <pre><code class="language-html"><!include-escaped _.htex></code></pre>
</article>

<!layout /.includes/layout.htex>
<article>
  <h2>wildcard route demo (_.htex handler)</h2>
  <p>handling <code><!url></code> path</p>
  <form id="form" action="/demos/wildcard/" method="post">
    <button type="submit">go back</button>
  </form>
</article>
<article>
  <code>wildcard/_.htex</code> source file:
  <pre><code class="language-html"><!include-escaped _.htex></code></pre>
</article>