Running zathura through the static code analytics tool revealed some areas that could be improved to increase the code quality. https://sonarcloud.io/dashboard?id=noppnopp_zathura This might be a good place to start for developers new to zathura. I will try to find the time to work on some of these as well.
There were no vulnerabilities found by the tool, which is a first with the projects I scanned so far. I think this deserves praise. Well done :)