Here, by the way, is an example of mathematical proofreading via AI in this development version in action:
The user can optionally highlight a specific mathematical expression in the markdown editor and request that it be proofread. It might be nice to have that as an option in the new math editor.
@sam It turns out that KaTeX isn’t working quite right in the new plugin. If you take a look at it, it’s quite clearly a missing font problem and, indeed, the console indicates that there a bunch of font (Woff-v2) files that are not found.
The fonts actually exist in the correct location, which should be in a folder named ‘fonts’ adjacent to the style sheet. Both of these files exist on my development version, for example:
http://localhost:4200/plugins/discourse-math/katex/katex.min.css
and
http://localhost:4200/plugins/discourse-math/katex/fonts/KaTeX_Size2-Regular.woff2
When we take a look at the Network tab of the console, it appears that it’s trying to download something like
http://localhost:4200/t/my-topic/fonts/KaTeX_Size2-Regular.woff2
Thus, the browser is looking in a ‘fonts’ folder adjacent to the topic URL, which is clearly wrong.
I suppose this all has something to do with the loadKaTeX function defined in the katex-bundle, which I guess loads KaTeX in a non-standard way leading to KaTeX not really knowing where the CSS file lives. I don’t know how to fix it, though.
Thanks so much Mark, I went ahead and merged your commits, will have a look at the Katex thing toda
Is this just via a custom prompt for the proofreader persona?
I would not worry about it, Mark and I have this under control.
Awesome on both counts!
That’s exactly right - yes. It’s obviously kinda fortunate that “Proofread” is a close enough description to what I want it to do.
I just pushed a fix for Katex, let me know if it works, I need to run it by @david to confirm it is safe, our pattern for loading CSS is not compatible with relative links inside the CSS file cause we are embedding a stylesheet
Note, I moved this to a new dedicate topic, cause it was getting a bit lost and noisy on the main math topic. Really looking forward to this upgrade, I feel we are very close.
KaTeX appears to be working fine to me with your latest commit!
It looks to me like some tests have not passed but I agree that the functionality is all there.
I’m pumped, too! 
If anyone is just itching to try out this new version or if (like me) they can’t wait since they’ve got classes that will use it starting in a few days, then you can install this standalone version here:
I based it off of this commit, I believe, changed it to draw MathJax from a CDN, rather than internally.
You can see it in action in this post on my Discourse site.
I think it’s worth pointing out that this upgrade will be significantly more than an upgrade of MathJax. It will also