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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Always add 1px space around fractions"
   href="https://bugs.webkit.org/show_bug.cgi?id=158937">158937</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Always add 1px space around fractions
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>WebKit
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>WebKit Nightly Build
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>Normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P2
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>MathML
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>webkit-unassigned&#64;lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>fred.wang&#64;free.fr
          </td>
        </tr>

        <tr>
          <th>Depends on</th>
          <td>153917
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=281645&amp;action=diff" name="attach_281645" title="Patch">attachment 281645</a> <a href="attachment.cgi?id=281645&amp;action=edit" title="Patch">[details]</a></span>
Patch

After <a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - Refactor RenderMathMLFraction layout to avoid using flexbox"
   href="show_bug.cgi?id=153917">bug 153917</a>, we aligned on the MathML specification and adds no spacing around fraction. This may be confusing when we have consecutive fractions, as shown in the attached testcase. I just commit a change in the MathML in HTML5 implementation note to solve that and this follows Gecko's behavior:

<a href="https://github.com/MathML/MathMLinHTML5/commit/9edd6b7a8487d3b22e46ddd0fc184d11c9a6d73a">https://github.com/MathML/MathMLinHTML5/commit/9edd6b7a8487d3b22e46ddd0fc184d11c9a6d73a</a></pre>
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      </p>
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