Add an ivy module

ivy is a modern alternative to ido and is superior to ido in many ways
(especially when you're dealing with a lot of candidates).

modules/prelude-ivy.el

@@ -0,0 +1,74 @@
+;;; prelude-ivy.el --- Ivy setup
+;;
+;; Copyright © 2011-2017 Bozhidar Batsov
+;;
+;; Author: Bozhidar Batsov <bozhidar@batsov.com>
+;; URL: https://github.com/bbatsov/prelude
+;; Version: 1.0.0
+;; Keywords: convenience
+
+;; This file is not part of GNU Emacs.
+
+;;; Commentary:
+
+;; Ivy-related config.
+
+;;; License:
+
+;; This program is free software; you can redistribute it and/or
+;; modify it under the terms of the GNU General Public License
+;; as published by the Free Software Foundation; either version 3
+;; of the License, or (at your option) any later version.
+;;
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs; see the file COPYING.  If not, write to the
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
+
+;;; Code:
+(prelude-require-packages '(ivy swiper counsel))
+
+;; ivy is a powerful alternative to the popular ido-mode
+
+(require 'ivy)
+
+(ivy-mode 1)
+(setq ivy-use-virtual-buffers t)
+(setq enable-recursive-minibuffers t)
+(global-set-key (kbd "C-c C-r") 'ivy-resume)
+(global-set-key (kbd "<f6>") 'ivy-resume)
+
+(setq projectile-completion-system 'ivy)
+
+;; swiper provides enhanced buffer search
+
+(require 'swiper)
+
+(global-set-key "\C-s" 'swiper)
+
+
+;; counsel supercharges a lot of commands with some ivy magic
+
+(require 'counsel)
+
+(global-set-key (kbd "M-x") 'counsel-M-x)
+(global-set-key (kbd "C-x C-f") 'counsel-find-file)
+(global-set-key (kbd "<f1> f") 'counsel-describe-function)
+(global-set-key (kbd "<f1> v") 'counsel-describe-variable)
+(global-set-key (kbd "<f1> l") 'counsel-find-library)
+(global-set-key (kbd "<f2> i") 'counsel-info-lookup-symbol)
+(global-set-key (kbd "<f2> u") 'counsel-unicode-char)
+(global-set-key (kbd "C-c g") 'counsel-git)
+(global-set-key (kbd "C-c j") 'counsel-git-grep)
+(global-set-key (kbd "C-c k") 'counsel-ag)
+(global-set-key (kbd "C-x l") 'counsel-locate)
+(define-key minibuffer-local-map (kbd "C-r") 'counsel-minibuffer-history)
+
+
+(provide 'prelude-ivy)
+;;; prelude-ivy.el ends here

sample/prelude-modules.el

@@ -2,7 +2,8 @@
 
 ;; Emacs IRC client
 (require 'prelude-erc)
-(require 'prelude-ido) ;; Super charges Emacs completion for C-x C-f and more
+;; (require 'prelude-ido) ;; Super charges Emacs completion for C-x C-f and more
+(require 'prelude-ivy) ;; A mighty modern alternative to ido
 ;; (require 'prelude-helm) ;; Interface for narrowing and search
 ;; (require 'prelude-helm-everywhere) ;; Enable Helm everywhere
 (require 'prelude-company)