RTEditor/src/main/java/com/onegravity/rteditor/converter/tagsoup/HTMLWriter.java
@Override
    public void comment(char[] ch, int start, int length) throws SAXException {
        write("<!--");
        for (int i = start; i < start + length; i++) {
            write(ch[i]);
            if (ch[i] == '-' && i + 1 <= start + length && ch[i + 1] == '-')
                write(' ');
        }
        write("-->");
    }
@Override
    public void comment(char[] ch, int start, int length) throws SAXException {
        write("<!--");
        for (int i = start; i < start + length; i++) {
            write(ch[i]);
            if (ch[i] == '-' && i + 1 <= start + length && ch[i + 1] == '-')
                write(' ');
        }
        write("-->");
    }
//////////////////////////////////////////////////////////////////