This reminds of how I discovered that the ed substitute command works in Discord. My brother @philipbrewer teases me for making typos, so in Signal, when I make a typo, I'll send a followup message "s/typo/fixed" to prevent him from teasing me. But when I did that in Discord IT JUST WORKED!
@stevendbrewer @bram In the interests of full disclosure: I tease him anyway.