[whatwg] Augmenting HTML parser to recognize new elements

Dimitri Glazkov dglazkov at chromium.org
Wed Jan 18 10:19:27 PST 2012

'sup, Whatwg!

The new HTML elements in the shadow DOM spec
and the nascent HTML templates spec (see it all explained here:
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>:


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.


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