I am excited to announce that I have finally implemented badge support in GNUStep! This feature, originally introduced by Apple in MacOS 10.5, was not available in GNUstep until now. Previously, GNUMail had to manage three different code paths in order to support different versions of MacOS. However, I was able to update the code to work with GNUstep by using NSCustomImageRep instead of ImageReps. In addition to adding badge support, I also made the colors themable, allowing users to customize the appearance. Check out the screenshot of the Sonne theme showing off the new badge feature!
http://multixden.blogspot.com/2023/08/gnustep-now-has-badges.html