In some scenarios, v2.20 did not work sufficiently with biblatex v3.19. As recommended, switch back to v2.19. Therefore, partial revert of the commit 59b78e28ea9fda5ca133ff448b82146191fbf91f. Retained from the previous commit: - Textual corrections to the port - Pet portlint by rearranging Makefile entries - Keeping the customizations for test environment Reported by: Clemens Heitzinger (via private mail) MFH: 2024Q4