On Thu, Jun 9, 2016 at 5:02 AM, Mike Shaver <mike.sha...@gmail.com> wrote:

> If engines pass parsing through to system libraries, it may be difficult
> for them to fully specify their quirks.
>

True; I wouldn't be surprised to see experiments assessing the impact of
specific proposals turning out to be influential.

Having things that currently fail become valid could also change the
> behaviour of existing programs that do speculative parsing; something to
> keep in mind.
>

The current behavior varies from one browser to another anyway. Assuming
the new grammar only codifies existing practice, won't any such programs
already be behaving inconsistently across browsers?
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