bug#3274: ido-completing-read doesn't work unless ido-mode is executed

[Leo]

I also ran into this bug a while back but didn't stop to fix it.

Could you verify the following patch fixes the bug?

commit 6ca8e9da0d6b61424a4f60073be0d42bd5b23d05
Date:   Sun Nov 28 13:32:44 2010 +0000

    Fix initialization in ido-completing-read

        Modified lisp/ido.el
diff --git a/lisp/ido.el b/lisp/ido.el
index 70d2d98..f1fc323 100644
--- a/lisp/ido.el
+++ b/lisp/ido.el
@@ -4853,6 +4853,9 @@ DEF, if non-nil, is the default value."
        (ido-directory-too-big nil)
        (ido-context-switch-command 'ignore)
        (ido-choice-list choices))
+    ;; Initialize ido before invoking ido-read-internal
+    (unless (keymapp ido-common-completion-map)
+      (let (ido-mode) (ido-mode 1)))
     (ido-read-internal 'list prompt hist def require-match initial-input)))
 
 (defun ido-unload-function ()