XML Default namespaces for unqualified attribute names?
问题 I'm trying to understand the correct interpretation of the "Namespaces in XML 1.0 (Third Edition)" definition for unqualified attribute namespaces. "The namespace name for an unprefixed attribute name always has no value." And later in the same section: "The attribute value in a default namespace declaration MAY be empty. This has the same effect, within the scope of the declaration, of there being no default namespace." So if I want to declare a default namespace for an element (and its