Re: Problem when run-hook-with-args with closure

[Stefan Monnier]

>   (setq foo
>         (lambda (y)
>           (message "x+y=%d" (+ x y)))))
> (run-hook-with-args 'foo 1)

Hooks should contain *lists* of functions.  The fact that they can also
just contain a function is an old backward compatibility hack: better
not rely on it.

So, if you do it right, you won't hit the bug:

     (setq foo
           (list (lambda (y)
                   (message "x+y=%d" (+ x y))))))
   (run-hook-with-args 'foo 1)

Or better yet:

     (add-hook 'foo
               (lambda (y)
                   (message "x+y=%d" (+ x y))))))
   (run-hook-with-args 'foo 1)


-- Stefan