Yet another niggling XML syntax question

John Cowan cowan at locke.ccil.org
Tue Mar 2 14:39:40 GMT 1999


David Brownell wrote:

> Right -- this would violate _validity_ constraints (but a nonvalidating
> parser should accept it just fine):
> 
>         <!DOCTYPE Bubba [
>           <!ENTITY % Part1 "<!ELEMENT ">
>           <!ENTITY % Part2 " Bubba ANY>">
>           <!-- next is a validity error in both internal
>                  and external subsets -->
>           %Part1;%Part2;
>         ]>
>         <Bubba></Bubba>
> 

It's not 100% clear to me whether the reference to Part2 violates
the WFC "PEs in Internal Subset", which states (inter alia) that
"parameter-entity references can occur only where markup
declarations can occur".  After "%Part1;" which resolves to
" <!ELEMENT  ", a markup declaration is in fact illegal (since
we are already inside one).

-- 
John Cowan	http://www.ccil.org/~cowan		cowan at ccil.org
	You tollerday donsk?  N.  You tolkatiff scowegian?  Nn.
	You spigotty anglease?  Nnn.  You phonio saxo?  Nnnn.
		Clear all so!  'Tis a Jute.... (Finnegans Wake 16.5)

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