Motivation:
Currently of diff pages, moved paragraphs are considered a deletion and a subsequent addition. This leads to the situation that people always need to read through all moved paragraphs to make sure, that nothing has changed apart from the position.
Task:
Using the currently existing display methods, show changes in moved text chunks. This means, that only the part that changed is highlighted.
Important:
The diff engine used on mediawiki production wikis is wikidiff2. This is a c++ library, so the code needs to be written in C++.
Background:
This is part of fulfilling wish #2 of the 2015 German-speaking community wishlist survey: T139603: Show text changes when moving text chunks (#2)