Error {super,sub}script at the begin of an formula are ignored
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	Wolf.Mueller
	Aug 26 2025, 7:20 AM

Description

The expressions:

<math>^{super}X</math>
<math>_{sub}X</math>

are not formatted correctly in the "native" rendering:

$wgDefaultUserOptions['math'] = 'native'

"^" and "_" at the beginning of the in "<math>"-tags included expressions are ignored wrongly.

In LaTeX and https://mathoid-beta.wmflabs.org it works correctly.

Best Regards, Wolf Müller

Related Changes in Gerrit:

	Subject	Repo	Branch	Lines +/-
	Return empty mrow instead of space for style attributes	mediawiki/extensions/Math	master	+9 -3

I can reproduce that for super, but not for sub.

It's a side effect of a missing \displaystyle implementation. If one uses {}^x works.

Change #1184205 had a related patch set uploaded (by Physikerwelt; author: Physikerwelt):

[mediawiki/extensions/Math@master] Return empty mrow instead of space for style attributes

It's somehow related to the way displaystyle was rendered, but not exactly T382669.

Physikerwelt triaged this task as Medium priority.Sep 3 2025, 7:41 AM

Change #1184205 merged by jenkins-bot:

[mediawiki/extensions/Math@master] Return empty mrow instead of space for style attributes

	F65963645: Screenshot 2025-09-05 at 11.10.47.png
	Sep 5 2025, 9:11 AM

	F65948008: Screenshot 2025-09-02 at 13.20.09.png
	Sep 2 2025, 11:20 AM