[Webkit-unassigned] [Bug 179682] Incorrect bounds inside <mover>/<munder> when a stretchy operator is present

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=179682

--- Comment #37 from Minsheng Liu <lambda at liu.ms> ---
To handle the latest edge case I provided, I think we really could benefit a lot from a logicalWidthWithoutStretchyOperators() virtual method. With that, we could have something like:

for (child : children)
  layout child if needed

this->m_logicalWidthWithoutStretchyOperator = max(children’s)

for (child : children that are embellished operators)
  let operator = ...
  stretch operator
  fixLayout(parent node = child, bad node = operator)

layout children
set logical width
et cetera 

This way we can combine the method we are working on with layoutBlock.

Also I suspect our existing fixLayout (setNeedsLayout() then layout()) is problematic for cases like an operator embellished with multiple subscript/superscript.

— Sent from my iPhone.

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