"--" isn't anything special in a typical shell. It's just another argument, one that customarily means "pass the rest of arguments on to a subprocess". Or are you confused about the "#"? It doesn't start a comment in the middle of a token.
> one that customarily means "pass the rest of arguments on to a subprocess".
It's convenient for passing options and args to a subprocess, but it customarily means "don't interpret anything following this as a short or long option, just as a positional argument". For example:
touch -f # error
touch -- -f # creates a file named "-f"
rm * # oh crap we just passed "rm -f" a bunch of files
rm -- * # don't treat that "-f" as an option, just delete the file named "-f"
