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How to Use Em Dashes (–), En Dashes (–), and Hyphens (-)

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650 points Stratoscope | 1 comments | 27 Mar 25 20:19 UTC | HN request time: 0.351s | source
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A_D_E_P_T ◴[27 Mar 25 20:41 UTC] No.43497927[source]▶
AFAIK most computer keyboards don't have em dashes. Rather than hit ALT+0151 every time, I've always just strung along two hyphens, like: --

Absolutely proper and correct use of em dashes, en dashes, and hyphens is, to me, the most obvious tell of the LLM writer. In fact, I think that you can use it to date internet writing in general. For it seems to me that real em dashes were uncommon pre-2022.

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maegul ◴[27 Mar 25 21:29 UTC] No.43498405[source]▶
Certain corners of the world have absolutely cared about and employed the proper use of all the “dashes” well before but all the way up to 2022. I’d imagine LLMs have just consumed some of that material.
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1. dragonwriter ◴[27 Mar 25 22:06 UTC] No.43498730[source]▶
Pretty much everything professionally edit and typeset does, and those will generally be retained in Unicode text (obviously, not if it gets converted to ASCII). It’s less common in internet fora because not all users either know the use of dashes or have easy access to them on the devices they are using, and if its not both familiar and easy, people are going to skip it in quick messages.