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<!DOCTYPE bugzilla SYSTEM "https://bugs.webkit.org/page.cgi?id=bugzilla.dtd">

<bugzilla version="5.0.4.1"
          urlbase="https://bugs.webkit.org/"
          
          maintainer="admin@webkit.org"
>

    <bug>
          <bug_id>276360</bug_id>
          
          <creation_ts>2024-07-09 01:08:30 -0700</creation_ts>
          <short_desc>Remove legacy padding/margin rules from MathML UA stylesheet</short_desc>
          <delta_ts>2024-07-09 11:45:16 -0700</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>MathML</component>
          <version>WebKit Nightly Build</version>
          <rep_platform>Unspecified</rep_platform>
          <op_sys>Unspecified</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>FIXED</resolution>
          
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords>InRadar</keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          <blocked>195797</blocked>
    
    <blocked>276169</blocked>
          <everconfirmed>1</everconfirmed>
          <reporter name="Frédéric Wang Nélar">fred.wang</reporter>
          <assigned_to name="Frédéric Wang Nélar">fred.wang</assigned_to>
          <cc>ahmad.saleem792</cc>
    
    <cc>webkit-bug-importer</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>2045266</commentid>
    <comment_count>0</comment_count>
    <who name="Frédéric Wang Nélar">fred.wang</who>
    <bug_when>2024-07-09 01:08:30 -0700</bug_when>
    <thetext>There are legacy rules that were used in earlier MathML implementations, for fine-tuning rendering or something, but they are arbitrary and not aligned with the MathML Core spec:

mi {
    padding-inline-end: 0.1em;
}
msub &gt; mi:first-child, msubsup &gt; mi:first-child {
    padding-inline-end: 0;
}
msubsup &gt; mi:first-child + * + * {
    margin-inline-start: 0.14em; /* This is larger than 0.1em because the child&apos;s font-size is smaller than the &lt;msubsup&gt;&apos;s. */
}

These are making mi tests for padding-002.html fail.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2045268</commentid>
    <comment_count>1</comment_count>
    <who name="Frédéric Wang Nélar">fred.wang</who>
    <bug_when>2024-07-09 01:25:53 -0700</bug_when>
    <thetext>Pull request: https://github.com/WebKit/WebKit/pull/30599</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2045364</commentid>
    <comment_count>2</comment_count>
    <who name="EWS">ews-feeder</who>
    <bug_when>2024-07-09 11:44:26 -0700</bug_when>
    <thetext>Committed 280785@main (a80eb4d127b1): &lt;https://commits.webkit.org/280785@main&gt;

Reviewed commits have been landed. Closing PR #30599 and removing active labels.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2045365</commentid>
    <comment_count>3</comment_count>
    <who name="Radar WebKit Bug Importer">webkit-bug-importer</who>
    <bug_when>2024-07-09 11:45:16 -0700</bug_when>
    <thetext>&lt;rdar://problem/131399293&gt;</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>