Remove ido, replace with ivy and counsel

emacs/.emacs.d/init.el

@@ -189,43 +189,29 @@ This is currently the data directory under the
              (concat user-emacs-directory "vendor-lisp/eternal-theme"))
 (load-theme 'eternal :no-confirm)
 
-;;;; Ido:
+;;;; Ivy:
 
-;; Enable ido.
+;;; Ivy is a completing read implementation that offers choises
+;;; vertically.
 
-(require 'ido)
+(ensure-library ivy)
+(require 'ivy)
 
-(ido-mode)
-(ido-everywhere)
+;; Use fuzzy matching in Ivy.
+(with-eval-after-load 'ivy
+  (setq ivy-re-builders-alist '((t . ivy--regex-fuzzy))
+        ivy-initial-inputs-alist nil))
 
-;; Add smex, an ido-like M-x alternative.
+(ivy-mode)
 
-(ensure-library smex)
+;;;; Counsel:
 
-(with-eval-after-load 'smex
-  (setq smex-save-file (oni:data-location "smex-items")))
+;;; Counsel is a group of functions that use Ivy to specialize on
+;;; certain built-in commands, such as M-x.
 
-(global-set-key (kbd "M-x") 'smex)
-(global-set-key (kbd "M-X") 'smex-major-mode-commands)
-
-;; Add ido-ubiquitous, use ido (almost) everywhere.
-
-(ensure-library ido-ubiquitous)
-(require 'ido-ubiquitous)
-(ido-ubiquitous-mode)
-
-;; Add ido-flx for flex matching in ido.
-
-(ensure-library flx-ido)
-(require 'flx-ido)
-
-;; Enable flex matching and disable faces so `flx-ido-mode' can do its
-;; thing.
-(with-eval-after-load 'ido
-  (setq ido-enable-flex-matching t
-        ido-use-faces nil))
-
-(flx-ido-mode)
+(ensure-library counsel)
+(require 'counsel)
+(counsel-mode)
 
 ;;;; Minor modes: