mathjax
`\coloneq` is not displaying as expected
Issue Summary
coloneq is not displaying as expected. It's definition by mathtools was updated in 2022.
Steps to Reproduce:
In the Mathjax demo, type the following:
$\require{mathtools}$
$A\coloneq B$
Expected output is that it is equivalent to \coloneqq i.e. it looks like :=
This can be seen in the equivalent LaTeX minimal example, for example shown here on Overleaf
Context
It seems that the mathtools package previously defined \coloneq as :-. But this was changed in 2022 due to clashing with another package See https://github.com/latex3/unicode-math/issues/142#issue-323364 and the documentation in section 3.7.3 on CTAN for more details.
Technical details:
- MathJax Version: 3.2.3
- Client OS: Mac OS 14.3
- Browser: Chrome 133.0.6943.142 (Official Build) (arm64)
Our current mathtools package predates the 2022 and 2024 changes to the actual TeX package, so don't have this updates, as you have discovered. This is corrected in mathjax/MathJax-src#1213 which will be part of the beta.8 release of v4.0 coming soon. It will include an option to select which of the two sets of names to use.
