safe: a!"#$%&'()*+,-./09:;<=>?@AZ[\]^_`az{|}~ !"#$%&'()*+,-./09:;<=>?@AZ[\]^_`az{|}~
safe question mark: ?foo
safe colon: :foo
safe dash: -foo
safe: a!"#$%&'()*+,-./09:;<=>?@AZ[\]^_`az{|}~ !"#$%&'()*+,-./09:;<=>?@AZ[\]^_`az{|}~
safe question mark: ?foo
safe colon: :foo
safe dash: -foo