It’s a hot topic among copy editors — in the US more than the UK.
https://www.nytimes.com/2019/08/14/style/em-dash-punctuation.html
To my ear, it has more of a dramatic beat to it than an en dash. Its slightly longer diving board lends a pause somewhere between a regular dash (en) and an ellipsis.
All this in an article which places spaces either side of the Em dashes ... :)
I think Em dashes are typographically much preferable. No spaces, please.
@Oliver Schick started
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It’s a hot topic among copy editors — in the US more than the UK.
https://www.nytimes.com/2019/08/14/style/em-dash-punctuation.html
To my ear, it has more of a dramatic beat to it than an en dash. Its slightly longer diving board lends a pause somewhere between a regular dash (en) and an ellipsis.