Brainfuck interpreter in clojure!

brainfuck.clj

(ns brain.fuck
  (:gen-class))

(def ptr (atom 0)) ; Initialize the pointer to 0
(def cells (atom (vec (repeat 30000 0)))) ; Plenty of room!

(defn start [place commands]
  (loop [brackets 1]
   (when-not (== brackets 0)
     (swap! place inc)
     (case (nth commands @place)
       \] (recur (dec brackets))
       \[ (recur (inc brackets))
       (recur brackets)))))

(defn end [place commands]
  (loop [brackets 1]
   (when-not (== brackets 0)
     (swap! place dec)
     (case (nth commands @place)
       \] (recur (inc brackets))
       \[ (recur (dec brackets))
       (recur brackets)))))

(defn exec-command [commands place]
  (case (nth commands @place)
    \> (swap! ptr inc) ; Apply inc to ptr
    \< (swap! ptr dec) ; Apply dec to ptr
    \+ (reset! cells (assoc @cells @ptr (inc (get @cells @ptr)))) ; assoc makes new array with inc
    \- (reset! cells (assoc @cells @ptr (dec (get @cells @ptr)))) ; assoc makes new array with dec
    \. (print (char (get @cells @ptr))) ; Get the cell, turn it into a char, and print
    \, (reset! cells (assoc @cells @ptr (int (char (. System/in read)))))
    \[ (if (== (get @cells @ptr) 0)
         (start place commands))
    \] (if-not (== (get @cells @ptr) 0)
         (end place commands))
    ()))

(defn interpret [commands]
  (loop [place (atom 0)]
    (exec-command commands place)
    (swap! place inc)
    (if-not (= @place (count commands))
      (recur place))))

(defn -main [& args]
  (if (nth args 0)
      (interpret (slurp (nth args 0)))
    (println "Please specify a file"))
  (flush))

When I run this through clojurescript it complains about recur inside the case statements, would this be something missing in clojurescript?

I've never tried to run it in clojurescript, I'll check it out and see if I can find a solution.