\operatorname is not being serialized correctly to MathML

[corlick98]

Description

When serializing an expression including \operatorname to Mathml we are losing information.
For example:
latex: \operatorname{cm}
mathml: <mo>&#x2061;</mo>

Actual Behavior

Instead of serializing the \operatorname to a mathml element we instead only get a Function Application character.

Expected Behavior

Based on

mathlive/src/addons/math-ml.ts

Line 339 in a1d66b5

? '<mi class="MathML-Unit"' +

I would expect to get something similar to <mi>cm</mi>.

Environment

MathLive version 0.81.0

Operating System [macOS, Windows, iOS. Include the version]
Ubuntu 22.04.1 LTS and Firefox 105.0.1 (64-bit)
also tested on
Windows 10 and Firefox 104.0.2

[MatousAc]

Can I we see a Fiddle or CodePen?
I'm interested in this behaviour too.

[corlick98]

Sure, here this is a fairly generic fiddle but if you enter \operatorname{anything} you will see the issue in MathML.
https://jsfiddle.net/kopaka9726/L3ca9ogx/

[MatousAc]

Ahh, I see, okay. Looks like this isn't that important to me as I don't think I will be using MathML representation in my app. Though it is interesting to see that all these different formats are available.
Is this explained in the docs somewhere? It may be useful to get a user's selection as is shown in the fiddle above.
Thanks.

[arnog]

Fixed in 069c1b1