Last Comment Bug 122253 - (maligngroup) maligngroup not available in MathML support
(maligngroup)
: maligngroup not available in MathML support
Status: NEW
: dev-doc-needed
Product: Core
Classification: Components
Component: MathML (show other bugs)
: Trunk
: x86 Windows 2000
: -- normal with 14 votes (vote)
: ---
Assigned To: Nobody; OK to take it and work on it
:
:
Mentors:
http://www.newmexico.mackichan.com/Ma...
Depends on:
Blocks: mathml-2 958947
  Show dependency treegraph
 
Reported: 2002-01-28 10:59 PST by steve.swanson
Modified: 2014-05-09 09:26 PDT (History)
5 users (show)
See Also:
Crash Signature:
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QA Whiteboard:
Iteration: ---
Points: ---
Has Regression Range: ---
Has STR: ---


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Description steve.swanson 2002-01-28 10:59:48 PST
(This is mentioned in the status report 
http://www.mozilla.org/projects/mathml/update.html but deserves mention in 
Bugzilla.)

Mozilla doesn't yet support <maligngroup> in MathML.  This is needed to 
correctly lay out multiline displayed equations as in the follow example (or 
see example in section 3.5.5.8 in the MathML spec).

<?xml version="1.0"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0//EN"
  "http://www.w3.org/TR/MathML2/dtd/xhtml-math11-f.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
  xmlns:mml="http://www.w3.org/1998/Math/MathML">
<head>
</head>
<body>
<p>
   What follows is a displayed multiline equation
</p>
<p>
   <mml:math display="block"><mml:mrow>
  <mml:mstyle displaystyle="true">
    <mml:mtable>
      <mml:mtr>
        <mml:mtd groupalign="right center left">
          <mml:maligngroup />
          <mml:mrow>
            <mml:mn>1</mml:mn>
            <mml:maligngroup />
            <mml:mo form="infix">=</mml:mo>
            <mml:maligngroup />
            <mml:mrow>
              <mml:msup>
                <mml:mi>x</mml:mi>
                <mml:mn>2</mml:mn>
              </mml:msup>
              <mml:mo form="infix">+</mml:mo>
              <mml:msup>
                <mml:mi>y</mml:mi>
                <mml:mn>2</mml:mn>
              </mml:msup>
            </mml:mrow>
          </mml:mrow>
        </mml:mtd>
      </mml:mtr>
      <mml:mtr>
        <mml:mtd groupalign="right center left">
          <mml:maligngroup />
          <mml:maligngroup />
          <mml:mo form="infix">=</mml:mo>
          <mml:maligngroup />
          <mml:msup>
            <mml:mi>r</mml:mi>
            <mml:mn>2</mml:mn>
          </mml:msup>
        </mml:mtd>
      </mml:mtr>
    </mml:mtable>
  </mml:mstyle>
</mml:mrow>
</mml:math>
</p>
</body>
</html>
Comment 1 Asa Dotzler [:asa] 2002-06-19 18:23:30 PDT
setting bug status to New. 
Comment 2 Ghasem Kiani 2012-05-12 23:33:32 PDT
This is a much-needed feature for formatting multiline equations. It's shocking that no activity has occurred in this bug during the last 10 years!
Comment 3 Frédéric Wang (:fredw) 2012-05-12 23:47:38 PDT
(In reply to Ghasem Kiani from comment #2)
> This is a much-needed feature for formatting multiline equations. It's
> shocking that no activity has occurred in this bug during the last 10 years!

Please vote for this bug if you find it important, that's much more efficient that leaving such a comment (rule 1.2 of Bugzilla Etiquette).

If you think that's not something difficult to fix, then your contribution is welcome: https://developer.mozilla.org/en/Introduction

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