Quote:
Originally Posted by davidfor
- em dash - old 1 word, ICU 2 words
That makes it look like both methods have a problem. The em dash should be a word delimiter and the non-breaking hyphen probably shouldn't (I assume it is a hyphen designed to make sure a hyphenated word is not split over two lines). I think the en dash should be word delimiter, but I could understand if it wasn't.
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For the em-dash, the ICU method is correct. It should be two words. An em-dash is similar to an ellipse.