Hello, On a Debian testing, I have created a small project with only one adb file. I do not observe any strange behavior with comments. $ gnat-gps --version GPS version Version: 4.3~2008.08.09.Version: 4.3~2008.08.09.Version: 4.3~2008.08.09 (Debian) hosted on x86_64-linux-gnu Olivier Scalbert