The en-dash and the em-dash are interchangeable in Finnish. The shorter form has more "inoffensive" look-and-feel and maybe that's why it's used more often here.
Now that I think of it, I don't seem to remember the alt code of the em-dash...
But not in English, where the en-dash is used to denote ranges.
In casual English, both em and en dashes are typically typed as a hyphen because this is what’s available readily on the keyboard. Do you have en dashes on a Finnish keyboard?
Unlikely. But Apple’s operating systems by default change characters to their correct typographic counterparts automatically. Personally, I type them myself: my muscle memory knows exactly which keys to press for — – “” ‘’ and more.
I don’t know if it works on the Finnish keyboard, but when I switch to another Scandinavian language it’s still working fine.
On macOS, option-dash will give you an en-dash, and option-shift-dash will give you an em-dash.
It’s fantastic that just because some people don’t know how to use their keyboards, all of a sudden anyone else who does is considered a fraud.
Follow-up question: Do any mobile phone IMEs (input method editors) auto-magically convert double dashes into em-dashes? If yes, then that might be a non-ChatGPT source of em-dashes.
I'm on Firefox and it doesn't seem to affect me, but I'm pretty sure I've seen it in Safari.
And if you type four dashes? Endash. Have one. ——
“Proper” quotes (also supposedly a hallmark of LLM text) are also a result of typing on an iOS device. It fixes that up too. I wouldn’t be at all surprised if Android phones do this too. These supposed “hallmarks” of generated text are just the results of the typographical prettiness routines lurking in screen keyboards.