rem: function clearClass(node) { var newc = node.className.replace(/(^|\s)mso.*?(\s|$)/ig, ' '); if ( newc != node.className ) { node.className = newc; if ( ! ( /\S/.test(node.className) ) ) { node.removeAttribute("className"); ++stats.mso_class; } } } 
add: function clearClass(node){ var newc=node.className.replace(/(^|\s)mso.*?(\s|$)/ig," "); if(newc!=node.className){ node.className=newc; if(!(/\S/.test(node.className))){ node.removeAttribute("className"); } } } 
context:   function clearClass(node)  {    var newc = node.className.replace(/(^|\s)mso.*?(\s|$)/ig, ' ');    if ( newc != node.className )    {      node.className = newc;      if ( ! ( /\S/.test(node.className) ) )      {        node.removeAttribute("className");        ++stats.mso_class;      }    }  }
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