[webkit-dev] The SrcN responsive images proposal

Benjamin Poulain benjamin at webkit.org
Thu Nov 7 16:34:30 PST 2013

On 11/7/13, 4:27 PM, Tab Atkins Jr. wrote:
> On Thu, Nov 7, 2013 at 3:39 PM, Timothy Hatcher <timothy at apple.com> wrote:
>> On Nov 7, 2013, at 2:22 PM, Tab Atkins Jr. <jackalmage at gmail.com> wrote:
>>> srcset's parsing algorithm *cannot* be extended in the future.  I gave
>>> an example of how it would fail over on blink-dev; I can reproduce it
>>> here if necessary.
>> I don't subscribe to blink-dev. The WebKit community are the ones you need to convince.
> A simple "Yes" would have sufficed.  I was just asking if I needed to
> demonstrate it.  Take this markup:
> <img srcset="foo 1x, bar 2x || baz 1x, qux 2x">
> You expect this to break into two lists, "foo 1x, bar 2x" and "baz 1x,
> qux 2x", which are then each split as currently proposed.
> However, by the current parsing algorithm, || is read as an
> unsupported descriptor, so it just breaks them into "foo 1x", "bar 2x
> || baz 1x", and "qux 2x".  The middle one is thrown away, because of
> the duplicate x descriptor, and so the whole thing is just parsed to
> the same value as "foo 1x, qux 2x", which is completely wrong.

This just sounds like a bad excuse. As far as I know, no browser has 
shipped srcset.


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