log warning for duplicate attributes
telic opened this issue · comments
Maxwell Terpstra commented
When an element has two attributes with the same name, all but the last instance are silently dropped (eg. <ACT n="1" n="2">
would appear in the DOM with only one attribute "n" set to "2").
ca.nines.ise.node.TagNode#setAttribute should log a warning if it notices this is about to happen.