## Issue In this example, we display the standard `Show 20 lines` etc buttons in between the two changed areas.  There are a few problems with that 1. There aren't 20 unchanged lines; there's only one 2. Displaying the unchanged line `18` would take up less room than the expand row ## Proposal - 5 or fewer unchanged lines: just show them. - 6-25 unchanged lines: show this “Expand all” button. - 26 or more unchanged lines: show the “Next 20 lines” and “Previous 20 lines” buttons. ### Additional Implementation Details We should implement this change with a feature flag so that we can be mindful of the impact this may have on performance or other commenting logic within the merge request. We don't need to rush on a roll out here.