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On Sat, Sep 24, 2016 at 2:33 PM, Costello, Roger L. <costello@m...> wrote: [Definition] An element is empty if and only if the element consists of a text node containing a string of length zero and nothing else (no attribute, comment, processing instruction, child element, or non-string value). In general, there are no text nodes of length zero. <B/> and its equivalent <B></B> contain only an element node. Furthermore, parsers may discard comments, so you can't be sure whether <B><!--foo--></B> will be treated the same as <B/> or not. -- John Cowan http://vrici.lojban.org/~cowan cowan@c... Cash registers don't really add and subtract; they only grind their gears. But then they don't really grind their gears, either; they only obey the laws of physics. --Unknown GMail doesn't have rotating .sigs, but you can see mine at http://www.ccil.org/~cowan/signatures
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