title: sharepoint 2013 : use variables such as $SPUrl:~SiteCollection/ for cssregistration?
body: <p>how do you use variable in the html (not master) ?</p>
  
  <pre><code>&lt;!--MS:&lt;SharePoint:CssRegistration Name="&lt;% $SPUrl:~SiteCollection/Style%20Library/fr-fr/Themable/foo.css %&gt;" runat="server"/&gt;--&gt;
  </code></pre>
  
  <p>does not work : no master is generated (Microsoft.SharePoint.Publishing.Design.ConversionErrorMasterPage). While it works if I use the full path instead of a variable</p>