Unified Diff

The unified diff provides a clear presentation of differences by displaying common parts of a file in shared lines and changed parts in different lines. In contrast to the side-by-side difference representation, the unified diff is still reasonable with more than two versions.

The SPLevo tool uses a unified diff to visualize variation points. The screenshot below shows the visualization for one selected variation points. Code variants belonging to the same project variant are colored the same. The selected variation point is visualized with a more satureted color. A column of line numbers presents the line numbers of the file belonging to one product variant.