Preserves line format when user deletes the line's line-break character effectively merging it with the next line.
This rule makes sure to apply all style attributes of deleted line-break to the next available line-break, which may reset any style attributes already present there.
Delta document, int index, int length ) → Delta
Applies heuristic rule to a delete operation on a
documentand returns resulting Delta.override
Invocation invocation ) → dynamic
Invoked when a non-existent method or property is accessed. [...]
) → String
Returns a string representation of this object.