[whatwg] Empty elements
web at timaltman.com
Wed Feb 15 16:00:32 PST 2006
On Thu, 16 Feb 2006 00:49:15 +0100, Lachlan Hunt
<lachlan.hunt at lachy.id.au> wrote:
> Tim Altman wrote:
>> On Wed, 15 Feb 2006 23:48:57 +0100, Ian Hickson <ian at hixie.ch> wrote:
>>> On Wed, 15 Feb 2006, Tim Altman wrote:
>>>> May OBJECT and CANVAS be treated as empty elements, i.e. <canvas />
>>>> <object /> if there is no fallback content?
>>> I don't understand your question.
>> Let me rephrase: Is it valid for the object and canvas elements use
>> the empty element syntax?
> HTML: No, XHTML: Yes.
Gah! Of course. Thank you. :)
>>> If you mean "Can the string '<object/>' be treated as an empty element
>>> tag", the answer is no.
>> You seem to have answered my question here. Why not?
> Because it is XML syntax, not HTML syntax.
> According SGML rules, <foo/> has a different meaning from the same
> syntax in XML. According to the new HTML5 parsing rules (due to
> complete lack of support for SGML), the '/' is an easy parse error and
> is essentially ignored. Backwards compatibility reasons prevent the XML
> meaning from being retrofitted into HTML.
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