I just encountered a surprise attempting to return a function from a
function. In the below case, if the function parameter is named "fn",
then calling the function throws an exception. If the function
parameter is named "f", no problem. (Using svn as of yesterday)

(defn no-problem[f]
  (fn [] (apply f [])))
(no-problem #(prn 99))  ;; returns a function as expected

(defn problem[fn]
  (fn [] (apply fn [])))    ;; same code as above but renamed
function parameter to "fn"

(problem #(prn 99)) ;; prints out "99" and throws an exception :


java.lang.IllegalArgumentException: Wrong number of args passed to:
dispatch$eval--3402$fn (NO_SOURCE_FILE:0)
 [Thrown class clojure.lang.Compiler$CompilerException]

Restarts:
 0: [ABORT] Return to SLIME's top level.
 1: [CAUSE] Throw cause of this exception

Backtrace:
 0: clojure.lang.Compiler.eval(Compiler.java:4179)
 1: clojure.core$eval__3733.invoke(core.clj:1582)
 --more--

Regards,

Hugh

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