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Maniphest T417420

MathJax and native MathMl rendering of \not operator not working
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Description

I'm using Ubuntu 24.04, Chrome and Wikimedia 1.46.0-alpha (83df57f) 08:35, 13. Feb. 2026 mit MathJax rendering.

The code
<math>\not=</math>, <math>\not<</math> or <math>\not></math>
will not be rendered correctly mit MathJax and native MathMl rendering.

image.png (682×318 px, 35 KB)

This bug is connected to T402082.

Details

Related Changes in Gerrit:
SubjectAuthorRepoBranchLines +/-
Improve `\not` overlay for MathML operatorsPhysikerweltmediawiki/extensions/Mathmaster+110 -9
Customize query in gerrit

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Event Timeline

Christian1985 created this task.Feb 13 2026, 3:48 PM
Restricted Application added a subscriber: Aklapper. · View Herald TranscriptFeb 13 2026, 3:48 PM
Christian1985 added parent tasks: T375238: Client-side MathJax rendering problems, T375318: Native MathML mode formatting bugs.Feb 13 2026, 3:52 PM
Christian1985 updated the task description. (Show Details)
Physikerwelt claimed this task.Feb 19 2026, 8:07 PM
Physikerwelt triaged this task as High priority.

Screenshot 2026-02-19 at 21.06.50.png (1,184×372 px, 52 KB)

Physikerwelt moved this task from Inbox to Ready to implement on the Math board.Feb 21 2026, 1:16 AM
Physikerwelt lowered the priority of this task from High to Medium.Feb 21 2026, 11:12 AM
gerritbot added a comment.Feb 21 2026, 11:46 AM

Change #1241102 had a related patch set uploaded (by Physikerwelt; author: Physikerwelt):

[mediawiki/extensions/Math@master] Improve `\not` overlay for MathML operators

https://gerrit.wikimedia.org/r/1241102

gerritbot added a project: Patch-For-Review.Feb 21 2026, 11:46 AM
Physikerwelt moved this task from Ready to implement to Code Review on the Math board.Feb 21 2026, 11:46 AM

Screenshot 2026-02-21 at 12.34.17.png (1,174×326 px, 50 KB)

gerritbot added a comment.Feb 28 2026, 6:15 PM

Change #1241102 merged by jenkins-bot:

[mediawiki/extensions/Math@master] Improve `\not` overlay for MathML operators

https://gerrit.wikimedia.org/r/1241102

Maintenance_bot removed a project: Patch-For-Review.Feb 28 2026, 6:30 PM
ReleaseTaggerBot added a project: MW-1.46-notes (1.46.0-wmf.18; 2026-03-03).Feb 28 2026, 7:00 PM
Physikerwelt closed this task as Resolved.Mar 1 2026, 5:49 AM

The spacing is still not optimal with MathJax but good with Firefox. However the not symbol is visible.

Krinkle merged a task: T402082: \not= ignored in MathML.Mar 31 2026, 12:03 AM
Krinkle added a parent task: T402029: Rendering of operators in MathML mode.
Krinkle added a subscriber: Dexxor.
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