Common Lisp actually lets you use any string for an identifier if you wrap it in pipes, though you have to be a bit careful of casing in that case. Still for so

Common Lisp actually lets you use any string for an identifier if you wrap it in pipes, though you have to be a bit careful of casing in that case. Still for so many characters on the keyboard it's not needed to wrap which is so convenient as you illustrate. (let ((|hello world| 3) (|HELLO world| 4) (|こんにちは (jp)| 5) (|pi\|pe| 'piped) (|newlines work too| 6)) (list |hello world| |HELLO world| |こんにちは (jp)| |pi\|pe| |newlines work too|)) ; --> (3 4 5 PIPED 6)