Fix Emacs 24 compatibility issue with Emacs 24

* contrib/lisp/org-contacts.el (completion-table-case-fold): Make
completion compatible with Emacs 24Fix org-contacts completion at point (was: org-contacts completion stopped working)

julien Barnier <julien@nozav.org> writes:

Hi Julien,

>> I use a very recent emacs 24 bzr checkout and org master from git.
>> Not sure who's the culprit.
>
> Same problem here. After a quick look it seems that there has been a
> recent change in the arguments taken by the completion-table-case-fold
> function in minibuffer.el :
>
> http://bzr.savannah.gnu.org/lh/emacs/trunk/revision/105991

Thanks for the pointer!

> But I don't think I could be able to find a fix by myself.

But I was able, so good teamwork, mate. :-)

--8<---------------cut here---------------start------------->8---
>From d89ca3ce39cd7436e5205744adcf468d9619180f Mon Sep 17 00:00:00 2001
From: Tassilo Horn <tassilo@member.fsf.org>
Date: Thu, 13 Oct 2011 17:02:07 +0200
Subject: [PATCH 2/2] Fix org-contacts completion at point.

contrib/lisp/org-contacts.el

@@ -169,9 +169,10 @@ If both match values are nil, return all contacts."
 
 (when (not (fboundp 'completion-table-case-fold))
   ;; That function is new in Emacs 24...
-  (defun completion-table-case-fold (table string pred action)
-    (let ((completion-ignore-case t))
-      (complete-with-action action table string pred))))
+  (defun completion-table-case-fold (table &optional dont-fold)
+    (lambda (string pred action)
+      (let ((completion-ignore-case (not dont-fold)))
+	(complete-with-action action table string pred)))))
 
 (defun org-contacts-complete-name (&optional start)
   "Complete text at START with a user name and email."
@@ -226,9 +227,7 @@ If both match values are nil, return all contacts."
                                            ;; If the user has an email address, append USER <EMAIL>.
                                            if email collect (org-contacts-format-email contact-name email))
                                      ", ")))))
-    (list start end (if org-contacts-completion-ignore-case
-			(apply-partially #'completion-table-case-fold completion-list)
-		      completion-list))))
+    (list start end (completion-table-case-fold completion-list (not org-contacts-completion-ignore-case)))))
 
 (defun org-contacts-message-complete-function ()
   "Function used in `completion-at-point-functions' in `message-mode'."