[Fix #447] Extract ido config into a module

This should make it simpler to disable ido completely if you want to use
an alternative library (like `icomplete` or `icicles` for instance).

core/prelude-editor.el

@@ -211,32 +211,6 @@ The body of the advice is in BODY."
 ;; keep in mind known issues with zsh - see emacs wiki
 (setq tramp-default-method "ssh")
 
-;; ido-mode
-(require 'ido)
-(require 'ido-ubiquitous)
-(require 'flx-ido)
-(setq ido-enable-prefix nil
-      ido-enable-flex-matching t
-      ido-create-new-buffer 'always
-      ido-use-filename-at-point 'guess
-      ido-max-prospects 10
-      ido-save-directory-list-file (expand-file-name "ido.hist" prelude-savefile-dir)
-      ido-default-file-method 'selected-window
-      ido-auto-merge-work-directories-length -1)
-(ido-mode +1)
-(ido-ubiquitous-mode +1)
-;; smarter fuzzy matching for ido
-(flx-ido-mode +1)
-;; disable ido faces to see flx highlights
-(setq ido-use-faces nil)
-
-;; smex, remember recently and most frequently used commands
-(require 'smex)
-(setq smex-save-file (expand-file-name ".smex-items" prelude-savefile-dir))
-(smex-initialize)
-(global-set-key (kbd "M-x") 'smex)
-(global-set-key (kbd "M-X") 'smex-major-mode-commands)
-
 (set-default 'imenu-auto-rescan t)
 
 ;; flyspell-mode does spell-checking on the fly as you type

core/prelude-packages.el

@@ -43,11 +43,11 @@
 
 (defvar prelude-packages
   '(ace-jump-mode ack-and-a-half anzu dash diminish elisp-slime-nav
-    epl expand-region flx-ido flycheck gist
+    epl expand-region flycheck gist
     gitconfig-mode gitignore-mode grizzl
-    guru-mode projectile ido-ubiquitous
+    guru-mode projectile
     magit move-text rainbow-mode
-    smartparens smex undo-tree
+    smartparens undo-tree
     volatile-highlights zenburn-theme)
   "A list of packages to ensure are installed at launch.")