RTEditor/src/main/java/com/onegravity/rteditor/converter/tagsoup/Parser.java
@Override
    public void adup(char[] buff, int offset, int length) throws SAXException {
        if (theNewElement != null && theAttributeName != null) {
            theNewElement.setAttribute(theAttributeName, null, theAttributeName);
            theAttributeName = null;
        }
    }
@Override
    public void adup(char[] buff, int offset, int length) throws SAXException {
        if (theNewElement != null && theAttributeName != null) {
            theNewElement.setAttribute(theAttributeName, null, theAttributeName);
            theAttributeName = null;
        }
    }
needs to support chars past U+FFFF