[whatwg] Augmenting HTML parser to recognize new elements

Dimitri Glazkov dglazkov at chromium.org
Wed Jan 18 13:29:55 PST 2012

On Wed, Jan 18, 2012 at 1:14 PM, Dimitri Glazkov <dglazkov at chromium.org> wrote:
> Ah, that's a good question. This also must be specified. It should
> depend on the parent of the <content> element. If the parent is shadow
> root or <table>, then it should make <tr> the child of <content>.
> Otherwise, it should use foster parenting as usual.

Oops, not "foster parenting", but "ignore" as you mentioned. Still
getting through the details of the parsing spec.

> :DG<
> On Wed, Jan 18, 2012 at 10:58 AM, Ryosuke Niwa <rniwa at webkit.org> wrote:
>> What if content wrapped elements ignored by the parser. e.g.
>> <content><tr>hi</tr></content>
>> What should the content element include in that case?
>> - Ryosuke
>> On Jan 18, 2012 10:19 AM, "Dimitri Glazkov" <dglazkov at chromium.org> wrote:
>>> 'sup, Whatwg!
>>> The new HTML elements in the shadow DOM spec
>>> (http://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html)
>>> and the nascent HTML templates spec (see it all explained here:
>>> http://dvcs.w3.org/hg/webcomponents/raw-file/tip/explainer/index.html)
>>> require tweaking of the HTML parsing behavior -- mostly the tree
>>> construction bits.
>>> A typical example would be specifying an insertion point (that's
>>> <content> element) as child of a <table>:
>>> <table>
>>>    <content>
>>>        <tr>
>>>            ...
>>>        </tr>
>>>    </content>
>>> </table>
>>> Both <shadow> and <template> elements have similar use cases.
>>> What would be the sane way to document such changes to the HTML parser
>>> behavior? A list of modifications to tree construction modes in each
>>> respective spec? Some "generic insertion point element" clause in the
>>> HTML spec? Give me ideas.
>>> Also -- what are the side effects of such a change? Surely, there's
>>> something I am not thinking of.
>>> :DG<

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