getLinesViewportData api in verticalObjects is returning range where start line and end line is not visible

[sandy081]

verticalObjects.getLinesViewportData() returns the view lines data those are not visible in the current view port.

• When a line is wrapped and is not visible completely on the top, Some times start line number value is the wrapped line # which is not visible.
• End line number is always one number greater than visible end line

As a result, In Vim:

• H and L commands seem to go to outside the view.