In that case, of course, the method of finding where the script lives would return something that indicates there is no script. But also in that case, the comma

In that case, of course, the method of finding where the script lives would return something that indicates there is no script. But also in that case, the commands you are piping into the shell probably are not looking for the files they were bundled with, they are probably working on files you've explicitly specified, and so there is no problem with not finding the script's location in that case.