src/main/java/com/bazaarvoice/jackson/rison/RisonGenerator.java
private void _appendCharacterEscape(char esc, char ch)
            throws IOException, JsonGenerationException
    {
        if ((_outputTail + 1) >= _outputEnd) {
            _flushBuffer();
        }
        _outputBuffer[_outputTail++] = esc;
        _outputBuffer[_outputTail++] = ch;
    }
private void _appendCharacterEscape(char esc, char ch)
            throws IOException, JsonGenerationException
    {
        if ((_outputTail + 1) >= _outputEnd) {
            _flushBuffer();
        }
        _outputBuffer[_outputTail++] = esc;
        _outputBuffer[_outputTail++] = ch;
    }
Method called to append escape sequence for given character, at the
end of standard output buffer; or if not possible, write out directly.