[buntsai]

You don't really need to only break on punctuation. There is no convention to do so and so long as you so not break any logograms in half, the resulting text reads perfectly fine. In fact, the convention is to have left and right justified text with equal numbers of monospaced logograms, including punctuation, on each line (on the equivalent for vertical text). Classical Chinese before the 20 th century was seldom punctuated.

[babuskov]

I wasn't aware of this. Thanks.