NEW 276828
Avoid <mo> invalidation for valid MathMLFractionElement/MathMLScriptsElement 
https://bugs.webkit.org/show_bug.cgi?id=276828
Summary Avoid <mo> invalidation for valid MathMLFractionElement/MathMLScriptsElement
Harry Chen
Reported 2024-07-19 11:41:43 PDT
MathMLFractionElement/MathMLScriptsElement inherit from MathMLRowElement in order to fall back to mrow behaviour when invalid [1]. However, even valid MathMLFractionElement/MathMLScriptsElements call MathMLRowElement::childrenChanged, which invalidates <mo> children. Since valid MathMLFractionElement/MathMLScriptsElements should not be calling this at all it would be good to avoid this invalidation. [1]: https://github.com/WebKit/WebKit/pull/30705
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Radar WebKit Bug Importer
Comment 1 2024-07-26 11:42:11 PDT
<rdar://problem/132586887>
Frédéric Wang (:fredw)
Comment 2 2024-08-09 00:41:03 PDT
Just to clarify here there are two concept of "invalid": - calling setOperatorFormDirty() on mo children to make sure their properties are properly recomputed. - invalid MathML elements i.e. they don't have the expected number of in-flow children (e.g. numerator and denominator for mfrac).
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