Earlier quoted context omitted.
I have a Compose key binding in https://github.com/kragen/xcompose which maps Compose Space Minus to "—" with two thin spaces on each side of it, because I prefer the spaces. But HN rewrites the thin spaces to regular spaces, so on HN I just use "—" without the spaces, the way ChatGPT does, which is Compose Minus Minus Minus, and is in the standard Compose key bindings (if you map your keyboard to have a Compose key…
I use space-hyphen-hyphen-space because I'm always switching between systems and keyboards -- it works well enough.
It took centuries for the written word to acquire spaces between words, and then the US decided to jam them back together again.
Curious why folk are using two hyphens "--" instead of en-dash.