"That ship has sailed" i.e. POSIX forbidding argc==0 when standardizing. I agree it's worth considering it now. I think argc>0 is close enough to a convention

"That ship has sailed" i.e. POSIX forbidding argc==0 when standardizing. I agree it's worth considering it now. I think argc>0 is close enough to a convention that things ought to mostly work, but it kind of irks me that it's necessary. But it should reduce ambiguity.