In JCR XPath, element names and attribute names that contain spaces or other invalid characters must have such characters escaped using the hexadecimal form "xHHHH" (where "HHHH" is the 4-digit hexadecimal UCS-2 code for the character in the most significant bit first order. (See section 6.6.4.9 of the JCR 1.0 specification.)

However, such encoded characters are not being properly decoded, resulting in the encodings being used literally.