281210 2024-10-10 01:46:09 -0700 Ignore legacy mstyle attributes (background, color, fontsize, fontstyle, fontweight) when CoreMathML is enabled 2025-09-29 17:08:20 -0700 1 1 1 Unclassified WebKit MathML WebKit Nightly Build Unspecified Unspecified RESOLVED CONFIGURATION CHANGED InRadar, WPTImpact P2 Normal --- 281206 1 fred.wang ahmad.saleem792 ahmad.saleem792 eri harpsichen karlcow webkit-bug-importer oldest_to_newest 2066839 0 fred.wang 2024-10-10 01:46:09 -0700 I guess it will be enough to make MathMLElement::hasPresentationalHintsForAttribute return false for these attributes when CoreMathML is enabled here: https://searchfox.org/wubkat/rev/168430191bc069c153b23fdddfc818adea1f2992/Source/WebCore/mathml/MathMLElement.cpp#112 Test: https://wpt.fyi/results/mathml/relations/css-styling/attribute-mapping-001.html 2066861 1 ahmad.saleem792 2024-10-10 04:00:21 -0700 Yes - I tested this yesterday and deleting them make us pass below WPT. 2068709 2 webkit-bug-importer 2024-10-17 01:47:18 -0700 <rdar://problem/138099409> 2068983 3 ahmad.saleem792 2024-10-17 18:57:38 -0700 I am assigning it to myself to do draft PR to get feedback. 2146705 4 eri 2025-09-29 03:03:40 -0700 I think this can be closed since we are already passing the test when CoreMathMLEnabled is on: https://searchfox.org/wubkat/source/LayoutTests/platform/glib/imported/w3c/web-platform-tests/mathml/relations/css-styling/attribute-mapping-001-expected.txt The relevant code that gates this behaviour is here: https://searchfox.org/wubkat/rev/168430191bc069c153b23fdddfc818adea1f2992/Source/WebCore/mathml/MathMLElement.cpp#195 2146995 5 karlcow 2025-09-29 17:08:20 -0700 Thanks Eri.