Sometimes Kompare matches the beginning or the end of a difference to the wrong line.
WinMerge and many other tools for file/folder comparison have the ability to manually match 2 lines and redo the diff from there.
Kompare would greatly benefit from this functionality.

Reproducible: Always

Steps to Reproduce:
1. Compare 2 files.
2. Select a line in left view
3. Select a line in right view
4. Click a button, that tells Kompare that these 2 lines are the same, and the diff should be redone from there on.