Closed Bug 122253 (maligngroup) Opened 22 years ago Closed 1 year ago

maligngroup not available in MathML support

Categories

(Core :: MathML, defect)

x86
Windows 2000
defect

Tracking

()

RESOLVED WONTFIX

People

(Reporter: steve.swanson, Unassigned)

References

(Blocks 2 open bugs, )

Details

(Keywords: dev-doc-needed)

(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>
setting bug status to New. 
Status: UNCONFIRMED → NEW
Ever confirmed: true
QA Contact: ian → mathml
Blocks: mathml-2
Assignee: rbs → nobody
Alias: maligngroup
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
Severity: normal → S3

The severity field for this bug is relatively low, S3. However, the bug has 14 votes.
:emilio, could you consider increasing the bug severity?

For more information, please visit auto_nag documentation.

Flags: needinfo?(emilio)

<maligngroup> is not part of MathML Core and it's even considered for deprecation in MathML 4: https://github.com/w3c/mathml/issues/181

So I guess this should be WONTFIX.

Status: NEW → RESOLVED
Closed: 1 year ago
Flags: needinfo?(emilio)
Resolution: --- → WONTFIX
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