On Fri, Mar 8, 2024 at 11:56 PM 'Dan Clark' via blink-dev < blink-dev@chromium.org> wrote:
> Am I correct in understanding that Gecko already mostly matches the > behavior in the spec? I see that Firefox also fails most of the WPTs at > https://wpt.fyi/results/css/cssom/getComputedStyle-pseudo-with-argument.html?label=master&label=experimental&aligned, > but I guess that's because they haven't shipped ::highlight() pseudos. Correct, it's because of ::highlight. It passes most of the tests in https://wpt.fyi/results/css/cssom/getComputedStyle-pseudo.html?label=master&label=experimental&aligned . > How are you thinking about the compatibility risk? If we're making the > parsing stricter in certain ways, presumably sites depending on that > behavior could break. Omitting the ":" seems like it could be a > particularly easy mistake to make. On the other hand the fact that WebKit > (and I guess Gecko) already did it is an encouraging signal. > Correct. Also, intending to keep current behavior for old pseudos that support single-colon in regular CSS (before, after, first-line, first-letter). If there are other exceptions with a lot of existing code we can consider adding them here. The way I'm thinking about this from a compat perspective is that if we keep supporting single-colon/no-colon for all pseudos, there would be more non-spec-compliant code written with those, that would seem to work in chrome while developing and then not work in other browsers. So aligning with the spec now is hopefully cleaner. However, if there are reasons to keep some of the parsing more lenient here I'm happy to hear and find the best solution for the web platform. -- You received this message because you are subscribed to the Google Groups "blink-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to blink-dev+unsubscr...@chromium.org. To view this discussion on the web visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAJn%3DMYbLLqWEjSNYnt6Pw%2BcV75%3DryQ%3DbsDM%3DAXtktKW6C__kkQ%40mail.gmail.com.
