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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Ensure that RenderMathMLOperator::stretchTo functions are called with stretchy operators that have the correct direction"
href="https://bugs.webkit.org/show_bug.cgi?id=156542">156542</a>
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<th>Summary</th>
<td>Ensure that RenderMathMLOperator::stretchTo functions are called with stretchy operators that have the correct direction
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr>
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<th>Product</th>
<td>WebKit
</td>
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<th>Version</th>
<td>WebKit Nightly Build
</td>
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<th>Hardware</th>
<td>All
</td>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>Normal
</td>
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<th>Priority</th>
<td>P2
</td>
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<th>Component</th>
<td>MathML
</td>
</tr>
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
</td>
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<th>Reporter</th>
<td>fred.wang@free.fr
</td>
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<th>Blocks</th>
<td>152244
</td>
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<div>
<pre>I'm extracting this change from <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - Add separate module for selection/measuring/drawing of stretchy operators"
href="show_bug.cgi?id=152244">bug 152244</a>.
This has already been done for horizontal stretchy operators in the RenderMathMLUnderOver refactoring (<a href="http://trac.webkit.org/changeset/199293">http://trac.webkit.org/changeset/199293</a>)
Let's do that for RenderMathMLRow and vertical stretchy operators too.
We can then add appropriate ASSERT in the RenderMathMLOperator::stretchTo functions.
Note that this change causes test failures for the following dynamic DOM/style tests, probably because some relayout that used to be forced by useless stretchTo called is not done anymore.
mathml/presentation/mo-lspace-rspace-dynamic.html
mathml/presentation/style-changed.html
So the solution from <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - Add separate module for selection/measuring/drawing of stretchy operators"
href="show_bug.cgi?id=152244">bug 152244</a> was to be a bit more aggressive with updates, until we better manage such things in the MathML code (<a class="bz_bug_link
bz_status_NEW "
title="NEW - [meta] Move MathML attribute parsing from the renderer classes to the element classes"
href="show_bug.cgi?id=156536">bug 156536</a>).</pre>
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