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Support the @supports CSS at-rule #730

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MurakamiShinyu opened this issue Jun 11, 2021 · 1 comment · Fixed by #762
Closed

Support the @supports CSS at-rule #730

MurakamiShinyu opened this issue Jun 11, 2021 · 1 comment · Fixed by #762
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feature request P1 Priority 1: Required for MVP (Minimum Viable Product) spec conformance

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MurakamiShinyu commented Jun 11, 2021 •
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Support the Feature queries: the @supports rule.
@MurakamiShinyu MurakamiShinyu self-assigned this Aug 28, 2021
@MurakamiShinyu MurakamiShinyu added the P1 Priority 1: Required for MVP (Minimum Viable Product) label Aug 30, 2021
MurakamiShinyu added a commit that referenced this issue Aug 31, 2021
@MurakamiShinyu
feat: support @supports
cd9c3a3 
WIP #730
MurakamiShinyu added a commit that referenced this issue Sep 3, 2021
@MurakamiShinyu
feat: Support the @supports CSS at-rule
08efaef 
Spec: CSS Conditional Rules Module Level 3 https://www.w3.org/TR/css-conditional-3/

Tests: https://github.com/web-platform-tests/wpt/tree/master/css/css-conditional

Now it passes all non-javascript tests in the https://github.com/web-platform-tests/wpt/tree/master/css/css-conditional
except "at-supports-040.html" that is for the Level 4 `selector(...)` not supported yet
and "css-supports-042.xht" that is an edge case that Chromium also fails.

resolves #730
@MurakamiShinyu MurakamiShinyu mentioned this issue Sep 3, 2021
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MurakamiShinyu commented Sep 3, 2021 •
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Spec: CSS Conditional Rules Module Level 3 https://www.w3.org/TR/css-conditional-3/

Tests: https://github.com/web-platform-tests/wpt/tree/master/css/css-conditional

Now Vivliostyle passes all non-javascript tests in https://github.com/web-platform-tests/wpt/tree/master/css/css-conditional
except "at-supports-040.html" that is for the Level 4 selector(...) not supported yet
and "css-supports-042.xht" that is an edge case that Chromium also fails.

See examples of the tests:

and the failed (not supported) examples:

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Support the @supports CSS at-rule vivliostyle/vivliostyle.js
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