Hehe I was very conflicted about it when I wrote it, and then again when I reviewed it to submit :)

I'll make the change, but just so you understand my reasoning: splitting with a semicolon is of course not necessary for nicknames (since they may not contain spaces), and I want to allow spaces in between to make the settings clearer (like WILL_ADMINS="Foo; Bar; Baz" instead of "WILL_ADMIN=Foo;Bar;Baz"). This makes the list comprehension more complex. So I ended up deciding on space-separated. But fair enough, I'll push the change in a moment.