- strictly: in particular, it must not contain overlong sequences,
- noncharacters such as U+FFFE, or codepoints above U+10FFFF.
+ strictly: in particular, it must not contain overlong sequences
+ or codepoints above U+10FFFF.
+ </para>
+
+ <para>
+ Since D-Bus Specification version 0.21, in accordance with Unicode
+ Corrigendum #9, the "noncharacters" U+FDD0..U+FDEF, U+nFFFE and
+ U+nFFFF are allowed in UTF-8 strings (but note that older versions of
+ D-Bus rejected these noncharacters).