Hi all,
I want to output <foo/> if and only if element <a> has child <b>, with
optional children <c> and <d>.
So for example
<a>
<b/>
</a>
should output <foo/>
<a>
<b/>
<c/>
<d/>
</a>
(or any combination of)
should output <foo/>
<a>
<b/>
<e/>
</a>
should not.
I think this is more difficult than it looks, the optional children
really mess things up... but I may be wrong :)
cheers
andrew
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