Make forum posts wider

No, they can take up the whole screen. Here is a shell script one. Try it and let me know if I misunderstood.

Making FreeBSD jails with jail.conf - General Discussion - TrueNAS Community Forums

Here is a small one (I’d like to see how this one expands).

; SCHEME
(define tolerance 0.00001)
(define (fixed-point f first-guess)
  (define (close-enough? v1 v2)
    (< (abs (- v1 v2)) tolerance))
  (define (try guess)
    (let ((next (f guess)))
      (if (close-enough? guess next)
          next
          (try next))))
  (try first-guess))

EDIT: They only expand vertically as far as it can. So if the code block is longer than the screeen it will expand up to 100pct vertically.