Compare: show long left and right line above each other

Currently, the compare shows a left and a right pane so only up to the half of the screen width is used. Often to less for seeing the full line without scrolling horizontally.

Suggestion: (optionally) show a 2-line view below both, the left and right panes, that show the left focused line above the right focused line. That way you have a longer display and easier can spot differences.