Its getting worse:
http://impredicative.com/ur/demo/Demo/Tree/main
Insert this into the w3c validator:
(14 errors).
The dtd says:
<!ELEMENT ul (li)+>
which means an ul must contain one ore more li elements. However the ur
code of the demo looks like this:
fun recurse (root : option key) =
queryX' (SELECT * FROM tab WHERE {eqNullable' (SQL
tab.{parent}) root})
(fn r =>
children <- recurse (Some r.Tab.id);
return <xml>
<li> {f r.Tab}</li>
<ul>
{children}
</ul>
</xml>)
which results in HTML code like this:
<ul>
<li>...</li>
<ul> <- only <li> tags allowed here.
</ul>
So in that case ur doesn't even validate nesting order of tags (which
WASH showed that its possible easily)
So what's happening here?
Marc Weber
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