Holy cow, I wrote a book!
News Flash: Spaces are legal characters in both filenames and passwords,
I was reminded of my own little experiment with passwords and spaces.
Over a decade ago, I tried using spaces in my password,
and they were accepted, but I ran into a different problem:
Brand name bias.
The password system accepted "Coke adds life" as my password,
but it rejected
"Pepsi the choice of a new generation".
Why did the password system accept a Coke slogan but not a Pepsi one?