[Webkit-unassigned] [Bug 155542] New: Add support for movablelimits

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=155542

            Bug ID: 155542
           Summary: Add support for movablelimits
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: MathML
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: fred.wang at free.fr
                CC: alex at igalia.com, mrobinson at webkit.org
        Depends on: 133845
            Blocks: 118737

Created attachment 274190
  --> https://bugs.webkit.org/attachment.cgi?id=274190&action=review
Patch (WIP)

When the base of an munderover/munder/mover element is an operator with the movablelimits=true property in displaystyle=false ; it should render the same as the equivalent msubsup/msub/sup. After the MathML refactoring, it is easy: we essentially need to make RenderMathMLUnderOver inherits from RenderMathMLScripts. This actually allows to share more code between the two classes.

I'm attaching a WIP patch. I plan to add new tests and to test it on mac too tomorrow.

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