gistfile1.js

if (typeof tinyMCE !== 'undefined') {
  // see http://www.tinymce.com/forum/viewtopic.php?id=25977
  var ed = tinyMCE.activeEditor;
  ed.onNodeChange.add(function(ed, cm, n, co, o) {
    n = ed.dom.getParent(n, 'span.media-element');
    tinymce.each(ed.dom.select('span.media-element', o.node), function(n) {
      // The criterias for choosing the span tags, that insert a br on pressing
      // enter when the span.xml_include tag was the last one in a paragraph

      if(!n.hasChildNodes() || (n.hasChildNodes() && n.firstChild.nodeName.toLowerCase() == "br" )) {
         //the current workaround for chrome
        if (tinymce.isWebKit) {
            ed.selection.select(n);
            var nParent = n.parentNode;
            ed.dom.remove(n); //faulty n (span tag) is removed
            nParent.innerHTML = " "; //nParent is now empty, so i have to do this to make next step possible, otherwise cursor jumps to start of textarea in upper left area
            ed.selection.select(nParent); //selecting the parent element
            ed.selection.collapse(); //and setting cursor to start of selection
        }
        //all other browsers (even IE) work fine
        else {
          ed.dom.remove(n.parentNode);
        }
      }
    });
  });
}