This question doesn't lend itself well to plain text, so I LaTeX'd and screenshotted it. I'll do my best with the alt text.


#math #maths #mathstodon #AskFedi

Edit: It turns out that Friendica has a MathJax addon. Who knew?

Also, it seems like there are a number of options. The one I like best is:
$$\sum_{\begin{matrix}1 \le n \le m\\n \ne a\end{matrix}} f(n)$$

Edit 2: It looks like this doesn't render properly when federated to a server without MathJax support. I suppose I should've seen that coming.

Okay, I need to do a hacky #elisp thing. Yes, I know it's terrible.

Basically, I have an existing defun. Let's call it foo. I need to replace it with a new function that calls the old one and transforms its output before returning it.

I naïvely assumed I could do it like this:

(let ((oldfunc (function foo)))
  (defun foo ()
    (my-transform (funcall oldfunc))))

I'm sure there's a way to do this.
#AskFedi

Edit: Got it. It's:

(let ((oldfunc (symbol-function 'foo)))
  (defun foo ()
    (my-transform (funcall oldfunc))))

Also, there's still something Gmail isn't liking. Looking at the differences in the headers between emacs and my other clients (whose mail does get through), the next most obvious difference is that the Content-Type header doesn't specify an encoding. Whether this is the actual problem or not, I should probably fix that. I'm just working on how.

Carlo Zancanaro

2026-04-12 02:26:37

The usual way to do this would be to "advise" the function with an "around" advice. gnu.org/software/emacs/manual/…

gnu.org

Advising Functions (GNU Emacs Lisp Reference Manual)

^www.gnu.org

Hey all,

I have a friend who's been trying to get on Mastodon but tells me that it doesn't seem to play well with screen readers. I know there are plenty of people on the fedi who do use screen readers, but I have no experience with them myself, so I can't really direct him.

Can someone who does use a #ScreenReader point me in the direction of some resources that might be useful?
#AskFedi #a11y

It has come to my attention that my favourite jacket is falling apart. I would like to repair it for two reasons:

1. I love this jacket.
2. I can't afford a new one right now.

I have no opposition to #VisibleMending.

Suggestions?