<object
        type="application/x-shockwave-flash"
        classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000"
        width="550"
        height="400"
        codebase="http://fpdownload.adobe.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,0,0"
>
    <param name="movie" value="/test_assets/flashvars.swf?a=1&b=3+%253&c&d[]=foo" />
    <param name="quality" value="high" />
    <param name="menu" value="false" />
    <ruffle-embed
            src="/test_assets/flashvars.swf?a=1&b=3+%253&c&d[]=foo"
  