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Bug 122253 (maligngroup)

maligngroup not available in MathML support

NEW
Unassigned

Status

()

Core
MathML
15 years ago
3 years ago

People

(Reporter: steve.swanson, Unassigned)

Tracking

(Blocks: 2 bugs, {dev-doc-needed})

Trunk
x86
Windows 2000
dev-doc-needed
Points:
---
Dependency tree / graph

Firefox Tracking Flags

(Not tracked)

Details

(URL)

(Reporter)

Description

15 years ago
(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

15 years ago
setting bug status to New. 
Status: UNCONFIRMED → NEW
Ever confirmed: true
QA Contact: ian → mathml
Blocks: 525772
Assignee: rbs → nobody
Alias: maligngroup
Keywords: dev-doc-needed

Comment 2

5 years ago
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!
(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
Blocks: 958947
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