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I'm not an emdash hater but this isn't how you use them. It should be a comma.
Replies
droidjj • yesterday at 7:19 PM
Em dashes are commonly used to add emphasis, even where you would ordinarily use a comma. Their flexibility is why many people love them! See https://www.merriam-webster.com/grammar/em-dash-en-dash-how-...
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jesse_dot_id • yesterday at 7:32 PM
I love em dashes because they are kind of a wildcard. When I read this same sentence, I interpret this emdash as an ellipses and not a comma.
Grammatically an emdash is fine in most places a comma is fine. It adds a bit more emphasis to the bit after the dash.
I went to the grocery store, and bought tomatoes.
I went to the grocery store---and bought a Ferrari.
The second one has a bit more of a dramatic pause.
"Eats, Shoots, and Leaves" is a fun book with a great chapter about the dash with many good examples.