Would you like me to draft a list of recommendations for how best to use comments?
I didn't even know there was a "three em dash". Bravo.
Huh. It's displayed taking up three cells in my terminal, but laid out as if its width were one cell. Irritating. I wonder if there are any other grapheme clusters that don't properly fit in two cells?
CJK text is typically rendered as 2 columns per character, but in general this is dependent on the terminal emulator