> Any thoughts here?
It would be better if they just said somewhere "the namespace PI has the
same syntax as XML element start-tags" and then given the following
pseudo-declaration:
<!ATTLIST #PI xml:namespace
prefix NMTOKEN #REQUIRED
ns CDATA #REQUIRED
src CDATA #IMPLIED >
<!-- NOTES:
prefix is an XML NAME, but cannot contain ":".
ns is a URI.
src is a URI.
-->
The production they probably want is probably more like
[1] <?xml:namespace' S
(NSDef S PrefixDef | PrefixDef S NSDef)
(S (SrcDef S? )? )?
'?>'
This is a case where, to me, the markup declararation syntax
has clear advantages over BNF. And I dread to think what it
would look like in some version of XML-data element syntax.
Rick Jelliffe