I think that some basic math formatting that used to work no longer is on my site. For example, Greek characters \\alpha, \\Alpha, \\beta, \\Beta, \\delta, \\Delta, \\epsilon. I tried enabling asciimath and using percent signs rather than dollar signs, but that just produces something differently wrong. Is the plugin broken, or is there something else I should be doing?

You can change the Default composition mode site setting to markdown. And then if you are not using the starter plan, you can use the CSS from the post I linked in a theme component to hide the toggle in the composer. (Customizing themes without an Edit code button) [image]How can i set disable Markdown & Default to Rich Text Then, add a little CSS snippet to the code for that component that looks like so: .composer-toggle-switch { display: none;

These work: For example, Greek characters $\alpha, \beta, \delta, \Delta, \epsilon$. For example, Greek characters \alpha, \beta, \delta, \Delta, \epsilon. Looks like there are not upper case Alpha or Beta, though.

[image] pfaffman: Looks like there are not upper case Alpha or Beta, though. https://www.mathworks.com/matlabcentral/discussions/tips/847926-greek-alphabet-and-latex-commands-not-a-question [17549330434871964285135457428550]

Thanks but even the lower-case ones are not currently working for me, though they used to. I’m including a screenshot of my math plugin settings below, along with a screenshot of what I put in a post and how it appears when posted… FWIW I’ve tried some other settings for the plugin, but nothing has fixed it. Am I doing something obviously wrong, or do you have any other suggestions? [Screenshot 2025-08-11 at 1.20.23 PM] [Screenshot 2025-08-11 at 1.24.02 PM]

Does it work when you use the markdown editor instead of the rich text editor? I think @mcmcclur mentioned that #math and the new rich text editor currently don’t work well together. [image]How can i set disable Markdown & Default to Rich Text used this to enforce the default Markdown editor, since the rich editor does not (yet) work well with the Discourse Math plugin.

Not sure what I did wrong before (oh, they don’t have upper case for \Alpha or \Beta since “A” and “B” work), but these all seem to be working here, copied from your link with a bit of keyboard macro magic. ALPHA: A, \alpha BETA: B, \beta GAMMA: \Gamma, \gamma DELTA: \Delta, \delta EPSILON: E, {\epsilon,\varepsilon} ZETA: Z, \zeta ETA: H, \eta THETA: \Theta, {\theta,\vartheta} IOTA: I, \iota KAPPA: K, \kappa LAMBDA: \Lambda, \lambda MU: M, \mu NU: N, \nu XI: \Xi, \xi OMICRON: O, o PI: \Pi, {\pi,\varpi} RHO: P, {\rho,\varrho} SIGMA: \Sigma, {\sigma,\varsigma} TAU: T, \tau UPSILON: \Upsilon, \upsilon PHI: \Phi, {\phi,\varphi} CHI: X, \chi PSI: \Psi, \psi OMEGA: \Omega, \omega - ALPHA: $ A, \alpha $ - BETA: $ B, \beta $ - GAMMA: $ \Gamma, \gamma $ - DELTA: $ \Delta, \delta $ - EPSILON: $ E, {\epsilon,\varepsilon} $ - ZETA: $ Z, \zeta $ - ETA: $ H, \eta $ - THETA: $ \Theta, {\theta,\vartheta} $ - IOTA: $ I, \iota $ - KAPPA: $ K, \kappa $ - LAMBDA: $ \Lambda, \lambda $ - MU: $ M, \mu $ - NU: $ N, \nu $ - XI: $ \Xi, \xi $ - OMICRON: $ O, o $ - PI: $ \Pi, {\pi,\varpi} $ - RHO: $ P, {\rho,\varrho} $ - SIGMA: $ \Sigma, {\sigma,\varsigma} $ - TAU: $ T, \tau $ - UPSILON: $ \Upsilon, \upsilon $ - PHI: $ \Phi, {\phi,\varphi} $ - CHI: $ X, \chi $ - PSI: $ \Psi, \psi $ - OMEGA: $ \Omega, \omega $ But if the above doesn’t work on your site, then you have something wrong. As you see, it’s working here. In your first example, you had double backslashes and in your second example, you’re using the visual editor (as someone else pointed out)

Thanks so much everyone. It seems like the default editor was changed, which had the side effect of breaking mathjax. I no longer get the preview pane, I guess because the main pane is now supposed to be WYSIWYG, which is not something I actually want. Sadly, I don’t understand how to make this new editor go away. I see stuff at one of the links y’all provided about CSS but I don’t even know where I would put it, even if I understood it. My site is managed by discourse.org, and I don’t think I have anything local… or is there some place I can access via settings that I can put it? I’d like to banish the visual editor, get the preview pane back, and most importantly, get math formatting to work again. Is there a straightforward way for me to do this?

[image] lspector: Is there a straightforward way for me to do this? @moin linked to it in the post before mine.

I’m trying to do this but it’s not working. I created a new component with the code: .composer-toggle-switch { display: none; } I don’t know if I need to do something else to make it active, but after doing this I still get the WYSIWYG editor, I don’t see anything to toggle that off (what would that look like, and where would I find it?), and the math in all of my previous posts is still broken. I have to admit that I don’t actually know what a component is, I never do anything with CSS, etc. So I’m pretty clueless, sadly. But I would really like to get the math working on my site again. Suggestions?

[image] lspector: I created a new component with the code: .composer-toggle-switch { display: none; } Assuming that you put that in the correct place and enabled the component, that should hide the switch that allows you to change back and forth from the rich editor to the Markdown editor. In particular, the switch that I’ve circled that in this image of the left side of the editor should be gone: [Screenshot 2025-08-11 at 3.20.26 PM] You still need to change the Default Composition Mode in the site preferences. You should just be able to search for it.

Math mode hard to use with rich text editor

Product Support

Jagster (Jakke Flemming) August 11, 2025, 5:35pm 5

It worked for me, but RTE doesn’t show as WYSIWYG, until that post is sended. Markdown shows right in preview.

Topic		Replies	Views
Discourse Math Plugin official , math , included-in-core	9	38739	July 11, 2026
:cn: Discourse Math 插件 Users chinese-translation	1	1471	May 17, 2023
Discourse Math Editor Plugin	14	4793	June 17, 2025
Upgrading to New Math Plugin Product Support math	11	797	May 18, 2022
How can i set disable Markdown & Default to Rich Text Feature	18	1107	May 13, 2026

Math mode hard to use with rich text editor

Related topics