Created attachment 112926 [details] diffiing files in kdiff3, kompare and p4merge At the moment Kompare has a functionality that shows in bold part of the line that was changed. Sometimes it is hard to spot a difference (especially if it is a difference of just a single character changed). The other problematic situation is when there was a change to white space (for example, an extra space was added by the auto-formatter). In such a case spotting the difference between lines is a real challenge. Suggested solution: Implement similar way of showing diffs as it is done in p4merge (or Kdiff3), i.e. background of section that has been changed should be different. Please see attachments.