private boolean isAstralPrivateUse(int c) {
        return ((c >= 0xF0000) && (c <= 0xFFFFD))
                || ((c >= 0x100000) && (c <= 0x10FFFD));
    }
Filter carriage returns in the read buffer. CRLF becomes LF; CR becomes
LF.

@param moreData
           true iff more data might come from the same source
@see #readDataChunk
@see #readBuffer
@see #readBufferOverflow
src/nu/validator/gnu/xml/aelfred2/XmlParser.java