With 500 characters, I can post useful snippets from #Emacs Wiki to Mastodon!

(defun unfill-region (beg end)
"Unfill the region, joining text paragraphs into a single
logical line. This is useful, e.g., for use with
`visual-line-mode'."
(interactive "*r")
(let ((fill-column (point-max)))
(fill-region beg end)))

Now all we need is a bot that scours the fediverse for definitions and publishes them to MELPA automatically! :grinning:

.@ttuegel I've seen posts in my timeline with 1500 characters from independent instances. so it doesn't look like the protocol cares about that. not sure if there's a hard limit somewhere.
@jb55 PuSH was designed to distribute anything from status updates to blog posts, so no, there is no hard limit anywhere. I suppose a particular server may reject your update if it is too large, though.
@ttuegel oh I didn't know it was using PuSH...