Spaced em dash?
I know all the technical rules about dashs, and that Bringhurst recomends spaced en dashes over closed set em dashes. (http://www.amazon.com/Elements-Typographic-Style-Robert-Bringhurst/dp/0881791326)
However the copy editor is asking me to do spaced em dash to set off a phrase. I have seen this done before.
What are your thoughts?
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