4 * Theme override for empty spans with RDF attributes.
6 * The XHTML+RDFa doctype allows either <span></span> or <span /> syntax to
7 * be used, but for maximum browser compatibility, W3C recommends the
8 * former when serving pages using the text/html media type, see
9 * http://www.w3.org/TR/xhtml1/#C_3.
11 * Available variables:
12 * - metadata: Each item within corresponds to its own set of attributes,
13 * and therefore, needs its own 'attributes' element.
15 * @see template_preprocess_rdf_metadata()
18 {% for attributes in metadata %}
19 <span{{ attributes.addClass('hidden') }}></span>