compiled. This would not happen if, say, you had constructed the
anonymous function by quoting it as a list:
+@c Do not unquote this lambda!
@example
@group
(defun double-property (symbol prop)
- (change-property symbol prop (lambda (x) (* 2 x))))
+ (change-property symbol prop '(lambda (x) (* 2 x))))
@end group
@end example