Why are null char disallowed even in CDATA sections?

Question

XML, Why are null char disallowed even in CDATA sections?

It seems to terminate the file right there.

Any solution? Base64?

Answer 1

Because it's no valid XML character, ie it should produce a parse error. This is likely because of historical reasons (null terminated strings) and because of XML's plain-text nature: Anything on which a Unicode-capable editor might choke is discouraged...