escape("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789")
ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789
escape("@*_+-./")
%40%2A%5F%2B%2D%2E%2F
escape(" ")
%20
escape("Āあ")
%C4%80%E3%81%82
escape("\n")
%0A
escape("abc\0defg")
abc
escape()
undefined
