WIP: Bug 1958853 - Render unknown MathML elements as an mrow.
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Authored by emilio on Apr 7 2025, 5:11 PM.

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emilio planned changes to this revision.Apr 7 2025, 5:11 PM

emilio created this revision.

phab-bot changed the visibility from "Custom Policy" to "Public (No Login Required)".Apr 7 2025, 5:12 PM

phab-bot changed the edit policy from "Custom Policy" to "Restricted Project (Project)".

fredw added inline comments.

layout/base/nsCSSFrameConstructor.cpp
4665	This function is currently falling back to display property when nsCSSFrameConstructor::FindMathMLData returns nullptr: https://searchfox.org/mozilla-central/source/layout/base/nsCSSFrameConstructor.cpp#51327 Probably for all known MathML elements in https://w3c.github.io/mathml-core/#mathml-elements-and-attributes that are not listed in sMathMLData yet, we should continue to return nullptr to keep the same behavior. That includes mtable/mtd/mtr at least.