Magnus Henoch writes:

>  I just discovered that org-clock-in displays the clocked-in task
>  in the mode line, so that I can click it and go back to the Org
>  file, which I really like.  I changed it to switch to the window
>  in which I click, by prepending "@" to the interactive spec of
>  org-clock-goto.

lisp/org-clock.el

@@ -781,7 +781,7 @@ If there is no running clock, throw an error, unless FAIL-QUIETLY is set."
 (defun org-clock-goto (&optional select)
   "Go to the currently clocked-in entry, or to the most recently clocked one.
 With prefix arg SELECT, offer recently clocked tasks for selection."
-  (interactive "P")
+  (interactive "@P")
   (let* ((recent nil)
 	 (m (cond
 	     (select