Spent last week in Paris for @csswg face-to-face meeting. Full agenda was wiki.csswg.org/planning/pari… . Thread on some interesting bits:
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Additive cascading proposal, to fix a longstanding problem with CSS cascading, was well-received. Need to find the least-bad syntax.
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Additive cascading would allow CSS declarations to add to the next-highest-priority declaration rather than overriding.
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Open question on additive cascade is whether it's just about appending to list-valued properties, or does more interpolation.
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It's good to see progress on CSS Fonts level 4, thanks to @Litherum. Think we sorted spec/implementation inconsistency on CSSFontFaceRule.
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Replying to @davidbaron @csswg @Litherum
Key feature driving Fonts 4 seems to be OpenType variations, which seem to have a lot of momentum, and could lead to a bunch of new things.

Aug 8, 2017 · 3:15 AM UTC

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Replying to @davidbaron @csswg
CSS Shadow Parts tabatkins.github.io/specs/cs… by @tabatkins was well-received, and seems like a good encapsulation balance. Naming questionable.
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Proposal from @grorgwork for standardized browser-defined CSS variables (for things that are like media queries) is also interesting.
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