<!--IssueSummary start--> <details> <summary> Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards. </summary> - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=30051) </details> <!--IssueSummary end--> ### Problem to solve If large portions of code are removed from one file and added to another one, this is difficult to review. ### Intended users Developer ### Further details See for example https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/14644/diffs:   ### Proposal Display these changes side-by-side, so they are easier to review by line. The scope of this issue is explicitly only to handle identical chunks **not** similar ones.