I use the command "pacman -Sup" to get the updates for a computer without internet. But it doesn't deal with replaces. I heard --noconfirm is implied when you use the "--print". So in my opinion it would make sense that "pacman -Sup" would print out _all_ the packages that would have been downloaded with "pacman -Syu --noconfirm" (assuming the database files are up-to-date). That would mean it would print out replaces and new dependencies of those as well.