Undefined behavior for keep-with-previous/next-sheets

[joeha480]

The behavior for keep-with-previous-sheets and keep-with-next-sheets is undefined when it comes to the block boundaries. In Dotify, the block boundary is not respected and the property "bleeds" into surrounding blocks if the value is too high (or the block is too small). In other words, sheets not containing the block at all may be kept in the same volume as the block.

This could be wrong, but the specification doesn't say.

[joeha480]

After looking at a resent case (see brailleapps/dotify.formatter.impl#40) and not understanding the results, I think the behavior is wrong, the property should only affect contents within the boundary of the block.

I expect @bertfrees to disagree, right?