<svg xmlns="http://www.w3.org/2000/svg"
     xmlns:html="http://www.w3.org/1999/xhtml">
  <title>Leading and trailing whitespace is stripped from (local) URL references (&#x3c;use&#x3e; href)</title>
  <html:link rel="help" href="https://svgwg.org/svg2-draft/linking.html#processingURL"/>
  <html:link rel="help" href="https://svgwg.org/svg2-draft/struct.html#UseElementHrefAttribute"/>
  <html:link rel="match" href="reference/green-100x100.svg"/>
  <defs>
    <rect id="green" width="50" height="50" fill="green"/>
    <rect id="red" width="50" height="50" fill="red"/>
  </defs>
  <rect width="100" height="100" fill="red"/>
  <use href=" #green"/>
  <use href="#green " x="50"/>
  <use href=" #green " y="50"/>
  <g transform="translate(50 50)">
    <rect id="green" width="50" height="50" fill="green"/>
    <use href=" # red "/>
  </g>
</svg>