RTEditor/src/main/java/com/onegravity/rteditor/converter/tagsoup/HTMLWriter.java
@Override
    public void ignorableWhitespace(char ch[], int start, int length) throws SAXException {
        writeText4Links();
        writeEscUTF16(new String(ch), start, length, false);
        super.ignorableWhitespace(ch, start, length);
    }
@Override
    public void ignorableWhitespace(char ch[], int start, int length) throws SAXException {
        writeText4Links();
        writeEscUTF16(new String(ch), start, length, false);
        super.ignorableWhitespace(ch, start, length);
    }
Write ignorable whitespace.
<p>
Pass the event on down the filter chain for further processing.

@param ch     The array of characters to write.
@param start  The starting position in the array.
@param length The number of characters to write.
@throws org.xml.sax.SAXException If there is an error writing the whitespace, or if a
handler further down the filter chain raises an exception.
@see org.xml.sax.ContentHandler#ignorableWhitespace