New hook for clock selection

* lisp/org-clock.el (org-clock-before-select-task-hook): New hook.
(org-clock-select-task): Run new hook.

Hi Org-moders,

I am often frustrated because I clock a lot of things and some of them
are repeated (i.e, coffee, read mails, etc.).  So when I want to clock
time I spend drinking coffee, the best I found was to search for a
headline matching "Coffee".  Or to tag frequent clocks and do some
agenda research on this tag.  Too long.  :-)

So here is a solution for this need : to add a shortcut property to
entries I would like to "bookmark" and insert matching entries in the
org-clock-select-task menu.  This can be done with :

* TODO Pause and drink coffee
  :PROPERTIES:
  :SHORTCUT: p
  :END:

then C-u C-c C-x C-i p.  And voil�, "Pause and drink coffee" is clocked!

Here is a patch that adds a hook into org-clock-select-task and a module
that adds the shortcut feature.  I tried to be the least intrusive
possible, if this proves to be useful, the hook trick might not be
needed.

Benj

TINYCHANGE

lisp/org-clock.el

@@ -388,6 +388,9 @@ of a different task.")
   "Return t when clocking a task."
   (not (equal (org-clocking-buffer) nil)))
 
+(defvar org-clock-before-select-task-hook nil
+  "Hook called in task selection just before prompting the user.")
+
 (defun org-clock-select-task (&optional prompt)
   "Select a task that recently was associated with clocking."
   (interactive)
@@ -420,6 +423,7 @@ of a different task.")
 	   (if (fboundp 'int-to-char) (setf (car s) (int-to-char (car s))))
 	   (push s sel-list)))
        org-clock-history)
+      (run-hooks 'org-clock-before-select-task-hook)
       (org-fit-window-to-buffer)
       (message (or prompt "Select task for clocking:"))
       (setq rpl (read-char-exclusive))