nostr:npub12tyk735v52ju032qahe3k2r520jlsujaem6xr8n0ex6u7eqj0anq59vnqc

I think this thread by nostr:npub16lp6rehcy09dql5hjas02mr8tnlgm0cccuuklxj3thxeq02efnqq5mw94r is one of the posts (about hash-tag positioning) I was thinking about:

https://masto.ai/@teacherbuknoy/110705432742603628

But I kind of remember someone working on Mastodon saying they were going to add it, too.