STEPS TO REPRODUCE 1. Open /var/log/pacman.log with kate 2. run a update 3. click view differences 4. a window appears stating the files are identical OBSERVED RESULT a window appears stating the files are identical EXPECTED RESULT a .diff file appears Operating System: Arch Linux KDE Plasma Version: 5.23.5 KDE Frameworks Version: 5.90.0 Qt Version: 5.15.2 Kernel Version: 5.16.3-arch1-1 (64-bit) Graphics Platform: X11 Processors: 4 × Intel® Celeron® CPU N3450 @ 1.10GHz Memory: 5.6 GiB of RAM Graphics Processor: Mesa Intel® HD Graphics 500
Hmm, works for me with current Kate master branch.