w3c / w3c/mathml-core

U+002D HYPHEN-MINUS in <mo> operators

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#70 24 comments 0 reactions 1 assignee View on GitHub

@bkardell is already working on this.

Since Aug 11, 2025.

Agenda need specification update needs-tests
Dominant language
HTML
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Description

U+002D HYPHEN-MINUS is too short, so MathML browser implementations render it as U+2212 MINUS SIGN.

Do we want to standardize this workaround?

I'd prefer not, but I guess the proper way to do it would be via a new text-transform value for mo.

If not, tools should generate the proper code point instead and we can write a polyfill for that.

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