[whatwg] iframe sandbox, <object tag>

On Mon, Nov 7, 2011 at 2:49 PM, Adam Barth <w3c at adambarth.com> wrote:
>> - there's also a similar question about whether the <object> tag will (should) support
>> @sandbox when using the form <object type="text/html" data="something.html"> (which
>> is in the HTML5 spec) - thoughts and opinions also welcome here.
>
> That's probably a win too.

Do people actually do this enough that it's worth spending time on?

My concern here is that it might be confusing that @sandbox works for
<object> when it contains a HTML page, but not when it contains a
plugin.

/ Jonas