Ahh, yes, your point is that the entirety of the command-line parameters may be under copyright, not just the alias. The FSF would be against this view as it w

Ahh, yes, your point is that the entirety of the command-line parameters may be under copyright, not just the alias. The FSF would be against this view as it would imply that a GNU system needs permission from POSIX to implement "ls -l" or "cc -c", or if not something that simple, then a sufficiently complex/"creative" command-line API. Therefore even if the court are undecided, the FSF is not going to make a copyright claim for linking the command 'gcc' to clang.