They did eventually show some “code”, namely signal.h and a couple of other similar files.
However, thanks to iBCS, it is actually possible to run SCO Unix binaries on Linux, and has been since last millennium. That's why interfaces like signal.h shouldn't be copyrightable: the goal of copyright Law is not to give SCO control over code their customers write.
However, thanks to iBCS, it is actually possible to run SCO Unix binaries on Linux, and has been since last millennium. That's why interfaces like signal.h shouldn't be copyrightable: the goal of copyright Law is not to give SCO control over code their customers write.