> That's a pity, I guess, but seeing that you're manually putting a > mid-bar break, it makes sense to manually mark the needed accidental > as well.
For my use case I really would like to have automatic behaviour. The example sent to the list was just for demonstration purposes; in reality I'm using only \bar "" and let LilyPond decide whether there is a break. And if there is no break, '!' doesn't do the right thing. Werner