When I post Markdown code in Lisp it rolls dice.

[Venoflux]

My lisp code below shared in Discord causes it to roll dice and I am not quite sure why, but I thought I should report it to you.

; Exercise 9
(define (in x)
  (cond [(number? x) x]
        [(string? x) (string-length x)]
        [(image? x) (* (image-height x) (image-width x))]))