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+;;; counsel.el --- Various completion functions using Ivy -*- lexical-binding: t -*-
+
+;; Copyright (C) 2015-2018  Free Software Foundation, Inc.
+
+;; Author: Oleh Krehel <ohwoeowho@gmail.com>
+;; URL: https://github.com/abo-abo/swiper
+;; Package-Version: 20180719.1303
+;; Version: 0.10.0
+;; Package-Requires: ((emacs "24.3") (swiper "0.9.0"))
+;; Keywords: convenience, matching, tools
+
+;; This file is part of GNU Emacs.
+
+;; This file 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, 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.
+
+;; For a full copy of the GNU General Public License
+;; see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; Just call one of the interactive functions in this file to complete
+;; the corresponding thing using `ivy'.
+;;
+;; Currently available:
+;; - Symbol completion for Elisp, Common Lisp, Python, Clojure, C, C++.
+;; - Describe fuctions for Elisp: function, variable, library, command,
+;;   bindings, theme.
+;; - Navigation functions: imenu, ace-line, semantic, outline.
+;; - Git utilities: git-files, git-grep, git-log, git-stash, git-checkout.
+;; - Grep utitilies: grep, ag, pt, recoll, ack, rg.
+;; - System utilities: process list, rhythmbox, linux-app.
+;; - Many more.
+
+;;; Code:
+
+(require 'swiper)
+(require 'compile)
+(require 'dired)
+
+;;* Utility
+(defvar counsel-more-chars-alist
+  '((counsel-grep . 2)
+    (t . 3))
+  "Map commands to their minimum required input length.
+That is the number of characters prompted for before fetching
+candidates.  The special key t is used as a fallback.")
+
+(defun counsel-more-chars ()
+  "Return two fake candidates prompting for at least N input.
+N is obtained from `counsel-more-chars-alist'."
+  (let ((diff (- (ivy-alist-setting counsel-more-chars-alist)
+                 (length ivy-text))))
+    (when (> diff 0)
+      (list "" (format "%d chars more" diff)))))
+
+(defun counsel-unquote-regex-parens (str)
+  "Unquote regex parenthesis in STR."
+  (if (consp str)
+      (mapconcat
+       #'car
+       (cl-remove-if-not #'cdr str)
+       ".*")
+    (let ((start 0)
+          ms)
+      (while (setq start (string-match "\\\\)\\|\\\\(\\|\\\\{\\|\\\\}\\|[()]" str start))
+        (setq ms (match-string-no-properties 0 str))
+        (cond ((equal ms "\\(")
+               (setq str (replace-match "(" nil t str))
+               (setq start (+ start 1)))
+              ((equal ms "\\{")
+               (setq str (replace-match "{" nil t str))
+               (setq start (+ start 1)))
+              ((equal ms "\\}")
+               (setq str (replace-match "}" nil t str))
+               (setq start (+ start 1)))
+              ((equal ms "\\)")
+               (setq str (replace-match ")" nil t str))
+               (setq start (+ start 1)))
+              ((equal ms "(")
+               (setq str (replace-match "\\(" nil t str))
+               (setq start (+ start 2)))
+              ((equal ms ")")
+               (setq str (replace-match "\\)" nil t str))
+               (setq start (+ start 2)))
+              (t
+               (error "Unexpected"))))
+      str)))
+
+(defun counsel-directory-name (dir)
+  "Return the name of directory DIR with a slash."
+  (file-name-as-directory
+   (file-name-nondirectory
+    (directory-file-name dir))))
+
+(defun counsel-string-compose (prefix str)
+  "Make PREFIX the display prefix of STR through text properties."
+  (let ((str (copy-sequence str)))
+    (put-text-property
+     0 1 'display
+     (concat prefix (substring str 0 1))
+     str)
+    str))
+
+(defun counsel-require-program (program)
+  "Check system for PROGRAM, printing error if unfound."
+  (or (and (stringp program)
+           (not (string= program ""))
+           (executable-find program))
+      (user-error "Required program \"%s\" not found in your path" program)))
+
+(make-obsolete-variable
+ 'counsel-prompt-function
+ 'ivy-set-prompt
+ "0.8.0 <2016-06-20 Mon>")
+
+(defcustom counsel-prompt-function #'counsel-prompt-function-default
+  "A function to return a full prompt string from a basic prompt string."
+  :group 'ivy
+  :type '(radio
+          (function-item counsel-prompt-function-default)
+          (function-item counsel-prompt-function-dir)
+          (function :tag "Custom")))
+
+(defun counsel-prompt-function-default ()
+  "Return prompt appended with a semicolon."
+  (ivy-add-prompt-count
+   (format "%s: " (ivy-state-prompt ivy-last))))
+
+(declare-function eshell-split-path "esh-util")
+
+(defun counsel-prompt-function-dir ()
+  "Return prompt appended with the parent directory."
+  (require 'esh-util)
+  (ivy-add-prompt-count
+   (let ((directory (ivy-state-directory ivy-last)))
+     (format "%s [%s]: "
+             (ivy-state-prompt ivy-last)
+             (let ((dir-list (eshell-split-path directory)))
+               (if (> (length dir-list) 3)
+                   (apply #'concat
+                          (append '("...")
+                                  (cl-subseq dir-list (- (length dir-list) 3))))
+                 directory))))))
+
+;;* Async Utility
+(defvar counsel--async-time nil
+  "Store the time when a new process was started.
+Or the time of the last minibuffer update.")
+
+(defvar counsel--async-start nil
+  "Store the time when a new process was started.
+Or the time of the last minibuffer update.")
+
+(defvar counsel--async-duration nil
+  "Store the time a process takes to gather all its candidates.
+The time is measured in seconds.")
+
+(defvar counsel--async-exit-code-plist ()
+  "Associate commands with their exit code descriptions.
+This plist maps commands to a plist mapping their exit codes to
+descriptions.")
+
+(defun counsel-set-async-exit-code (cmd number str)
+  "For CMD, associate NUMBER exit code with STR."
+  (let ((plist (plist-get counsel--async-exit-code-plist cmd)))
+    (setq counsel--async-exit-code-plist
+          (plist-put counsel--async-exit-code-plist
+                     cmd
+                     (plist-put plist number str)))))
+
+(defvar counsel-async-split-string-re "\n"
+  "Store the regexp for splitting shell command output.")
+
+(defvar counsel-async-ignore-re nil
+  "Regexp matching candidates to ignore in `counsel--async-filter'.")
+
+(defun counsel--async-command (cmd &optional sentinel filter name)
+  "Start and return new counsel process by calling CMD.
+If the default counsel process or one with NAME already exists,
+kill it and its associated buffer before starting a new one.
+Give the process the functions SENTINEL and FILTER, which default
+to `counsel--async-sentinel' and `counsel--async-filter',
+respectively."
+  (counsel-delete-process name)
+  (let ((name (or name " *counsel*"))
+        proc)
+    (when (get-buffer name)
+      (kill-buffer name))
+    (setq proc (start-file-process-shell-command
+                name (get-buffer-create name) cmd))
+    (setq counsel--async-time (current-time))
+    (setq counsel--async-start counsel--async-time)
+    (set-process-sentinel proc (or sentinel #'counsel--async-sentinel))
+    (set-process-filter proc (or filter #'counsel--async-filter))
+    proc))
+
+(defvar counsel-grep-last-line nil)
+
+(defun counsel--async-sentinel (process _msg)
+  "Sentinel function for an asynchronous counsel PROCESS."
+  (when (eq (process-status process) 'exit)
+    (if (zerop (process-exit-status process))
+        (progn
+          (ivy--set-candidates
+           (ivy--sort-maybe
+            (with-current-buffer (process-buffer process)
+              (split-string (buffer-string) counsel-async-split-string-re t))))
+          (setq counsel-grep-last-line nil)
+          (when counsel--async-start
+            (setq counsel--async-duration
+                  (time-to-seconds (time-since counsel--async-start))))
+          (let ((re (ivy-re-to-str (funcall ivy--regex-function ivy-text))))
+            (if ivy--old-cands
+                (ivy--recompute-index ivy-text re ivy--all-candidates)
+              (unless (ivy-set-index
+                       (ivy--preselect-index
+                        (ivy-state-preselect ivy-last)
+                        ivy--all-candidates))
+                (ivy--recompute-index ivy-text re ivy--all-candidates))))
+          (setq ivy--old-cands ivy--all-candidates)
+          (if ivy--all-candidates
+              (ivy--exhibit)
+            (ivy--insert-minibuffer "")))
+      (setq ivy--all-candidates
+            (let ((status (process-exit-status process))
+                  (plist (plist-get counsel--async-exit-code-plist
+                                    (ivy-state-caller ivy-last))))
+              (list (or (plist-get plist status)
+                        (format "error code %d" status)))))
+      (setq ivy--old-cands ivy--all-candidates)
+      (ivy--exhibit))))
+
+(defcustom counsel-async-filter-update-time 500000
+  "The amount of time in microseconds to wait until updating
+`counsel--async-filter'."
+  :type 'integer
+  :group 'ivy)
+
+(defun counsel--async-filter (process str)
+  "Receive from PROCESS the output STR.
+Update the minibuffer with the amount of lines collected every
+`counsel-async-filter-update-time' microseconds since the last update."
+  (with-current-buffer (process-buffer process)
+    (insert str))
+  (when (time-less-p (list 0 0 counsel-async-filter-update-time)
+                     (time-since counsel--async-time))
+    (let (numlines)
+      (with-current-buffer (process-buffer process)
+        (setq numlines (count-lines (point-min) (point-max)))
+        (ivy--set-candidates
+         (let ((lines (split-string (buffer-string)
+                                    counsel-async-split-string-re
+                                    t)))
+           (if (stringp counsel-async-ignore-re)
+               (cl-remove-if (lambda (line)
+                               (string-match-p counsel-async-ignore-re line))
+                             lines)
+             lines))))
+      (let ((ivy--prompt (format (concat "%d++ " (ivy-state-prompt ivy-last))
+                                 numlines)))
+        (ivy--insert-minibuffer (ivy--format ivy--all-candidates)))
+      (setq counsel--async-time (current-time)))))
+
+(defun counsel-delete-process (&optional name)
+  "Delete current counsel process or that with NAME."
+  (let ((process (get-process (or name " *counsel*"))))
+    (when process
+      (delete-process process))))
+
+;;* Completion at point
+;;** `counsel-el'
+;;;###autoload
+(defun counsel-el ()
+  "Elisp completion at point."
+  (interactive)
+  (let* ((bnd (unless (and (looking-at ")")
+                           (eq (char-before) ?\())
+                (bounds-of-thing-at-point 'symbol)))
+         (str (if bnd
+                  (buffer-substring-no-properties
+                   (car bnd)
+                   (cdr bnd))
+                ""))
+         (pred (and (eq (char-before (car bnd)) ?\()
+                    #'fboundp))
+         symbol-names)
+    (setq ivy-completion-beg (car bnd))
+    (setq ivy-completion-end (cdr bnd))
+    (if (string= str "")
+        (mapatoms
+         (lambda (x)
+           (when (symbolp x)
+             (push (symbol-name x) symbol-names))))
+      (setq symbol-names (all-completions str obarray pred)))
+    (ivy-read "Symbol name: " symbol-names
+              :caller 'counsel-el
+              :predicate pred
+              :initial-input str
+              :action #'ivy-completion-in-region-action)))
+
+(add-to-list 'ivy-height-alist '(counsel-el . 7))
+
+;;** `counsel-cl'
+(declare-function slime-symbol-start-pos "ext:slime")
+(declare-function slime-symbol-end-pos "ext:slime")
+(declare-function slime-contextual-completions "ext:slime-c-p-c")
+
+;;;###autoload
+(defun counsel-cl ()
+  "Common Lisp completion at point."
+  (interactive)
+  (setq ivy-completion-beg (slime-symbol-start-pos))
+  (setq ivy-completion-end (slime-symbol-end-pos))
+  (ivy-read "Symbol name: "
+            (car (slime-contextual-completions
+                  ivy-completion-beg
+                  ivy-completion-end))
+            :action #'ivy-completion-in-region-action))
+
+;;** `counsel-jedi'
+(declare-function deferred:sync! "ext:deferred")
+(declare-function jedi:complete-request "ext:jedi-core")
+(declare-function jedi:ac-direct-matches "ext:jedi")
+
+(defun counsel-jedi ()
+  "Python completion at point."
+  (interactive)
+  (let ((bnd (bounds-of-thing-at-point 'symbol)))
+    (setq ivy-completion-beg (car bnd))
+    (setq ivy-completion-end (cdr bnd)))
+  (deferred:sync!
+      (jedi:complete-request))
+  (ivy-read "Symbol name: " (jedi:ac-direct-matches)
+            :action #'counsel--py-action))
+
+(defun counsel--py-action (symbol-name)
+  "Insert SYMBOL-NAME, erasing the previous one."
+  (when (stringp symbol-name)
+    (with-ivy-window
+      (when ivy-completion-beg
+        (delete-region
+         ivy-completion-beg
+         ivy-completion-end))
+      (setq ivy-completion-beg (point))
+      (insert symbol-name)
+      (setq ivy-completion-end (point))
+      (when (equal (get-text-property 0 'symbol symbol-name) "f")
+        (insert "()")
+        (setq ivy-completion-end (point))
+        (backward-char)))))
+
+;;** `counsel-clj'
+(declare-function cider-sync-request:complete "ext:cider-client")
+(defun counsel--generic (completion-fn)
+  "Complete thing at point with COMPLETION-FN."
+  (let* ((bnd (or (bounds-of-thing-at-point 'symbol)
+                  (cons (point) (point))))
+         (str (buffer-substring-no-properties
+               (car bnd) (cdr bnd)))
+         (candidates (funcall completion-fn str))
+         (res (ivy-read (format "pattern (%s): " str)
+                        candidates
+                        :caller 'counsel--generic)))
+    (when (stringp res)
+      (when bnd
+        (delete-region (car bnd) (cdr bnd)))
+      (insert res))))
+
+(add-to-list 'ivy-height-alist '(counsel--generic . 7))
+
+;;;###autoload
+(defun counsel-clj ()
+  "Clojure completion at point."
+  (interactive)
+  (counsel--generic
+   (lambda (str)
+     (mapcar
+      #'cl-caddr
+      (cider-sync-request:complete str ":same")))))
+
+;;** `counsel-company'
+(defvar company-candidates)
+(defvar company-point)
+(defvar company-common)
+(declare-function company-complete "ext:company")
+(declare-function company-mode "ext:company")
+(declare-function company-complete-common "ext:company")
+
+;;;###autoload
+(defun counsel-company ()
+  "Complete using `company-candidates'."
+  (interactive)
+  (company-mode 1)
+  (unless company-candidates
+    (company-complete))
+  (when company-point
+    (when (looking-back company-common (line-beginning-position))
+      (setq ivy-completion-beg (match-beginning 0))
+      (setq ivy-completion-end (match-end 0)))
+    (ivy-read "company cand: " company-candidates
+              :action #'ivy-completion-in-region-action)))
+
+;;** `counsel-irony'
+;;;###autoload
+(defun counsel-irony ()
+  "Inline C/C++ completion using Irony."
+  (interactive)
+  (irony-completion-candidates-async 'counsel-irony-callback))
+
+(defun counsel-irony-callback (candidates)
+  "Callback function for Irony to search among CANDIDATES."
+  (interactive)
+  (let* ((symbol-bounds (irony-completion-symbol-bounds))
+         (beg (car symbol-bounds))
+         (end (cdr symbol-bounds))
+         (prefix (buffer-substring-no-properties beg end)))
+    (setq ivy-completion-beg beg
+          ivy-completion-end end)
+    (ivy-read "code: " (mapcar #'counsel-irony-annotate candidates)
+              :predicate (lambda (candidate)
+                           (string-prefix-p prefix (car candidate)))
+              :caller 'counsel-irony
+              :action 'ivy-completion-in-region-action)))
+
+(defun counsel-irony-annotate (x)
+  "Make Ivy candidate from Irony candidate X."
+  (cons (concat (car x) (irony-completion-annotation x))
+        (car x)))
+
+(add-to-list 'ivy-display-functions-alist '(counsel-irony . ivy-display-function-overlay))
+
+(declare-function irony-completion-candidates-async "ext:irony-completion")
+(declare-function irony-completion-symbol-bounds "ext:irony-completion")
+(declare-function irony-completion-annotation "ext:irony-completion")
+
+;;* Elisp symbols
+;;** `counsel-describe-variable'
+(defvar counsel-describe-map
+  (let ((map (make-sparse-keymap)))
+    (define-key map (kbd "C-.") #'counsel-find-symbol)
+    (define-key map (kbd "C-,") #'counsel--info-lookup-symbol)
+    map))
+
+(ivy-set-actions
+ 'counsel-describe-variable
+ '(("I" counsel-info-lookup-symbol "info")
+   ("d" counsel--find-symbol "definition")))
+
+(defvar counsel-describe-symbol-history nil
+  "History for `counsel-describe-variable' and `counsel-describe-function'.")
+
+(defun counsel-find-symbol ()
+  "Jump to the definition of the current symbol."
+  (interactive)
+  (ivy-exit-with-action #'counsel--find-symbol))
+
+(defun counsel--info-lookup-symbol ()
+  "Lookup the current symbol in the info docs."
+  (interactive)
+  (ivy-exit-with-action #'counsel-info-lookup-symbol))
+
+(defvar find-tag-marker-ring)
+(declare-function xref-push-marker-stack "xref")
+
+(defalias 'counsel--push-xref-marker
+    (if (require 'xref nil t)
+        #'xref-push-marker-stack
+      (require 'etags)
+      (lambda (&optional m)
+        (ring-insert (with-no-warnings find-tag-marker-ring) (or m (point-marker)))))
+  "Compatibility shim for `xref-push-marker-stack'.")
+
+(defun counsel--find-symbol (x)
+  "Find symbol definition that corresponds to string X."
+  (with-ivy-window
+    (counsel--push-xref-marker)
+    (let ((full-name (get-text-property 0 'full-name x)))
+      (if full-name
+          (find-library full-name)
+        (let ((sym (read x)))
+          (cond ((and (eq (ivy-state-caller ivy-last)
+                          'counsel-describe-variable)
+                      (boundp sym))
+                 (find-variable sym))
+                ((fboundp sym)
+                 (find-function sym))
+                ((boundp sym)
+                 (find-variable sym))
+                ((or (featurep sym)
+                     (locate-library
+                      (prin1-to-string sym)))
+                 (find-library
+                  (prin1-to-string sym)))
+                (t
+                 (error "Couldn't find definition of %s"
+                        sym))))))))
+
+(define-obsolete-function-alias 'counsel-symbol-at-point
+    'ivy-thing-at-point "0.7.0")
+
+(defun counsel-variable-list ()
+  "Return the list of all currently bound variables."
+  (let (cands)
+    (mapatoms
+     (lambda (vv)
+       (when (or (get vv 'variable-documentation)
+                 (and (boundp vv) (not (keywordp vv))))
+         (push (symbol-name vv) cands))))
+    (delete "" cands)))
+
+(defcustom counsel-describe-variable-function #'describe-variable
+  "Function to call to describe a variable passed as parameter."
+  :type 'function
+  :group 'ivy)
+
+(defun counsel-describe-variable-transformer (var)
+  "Propertize VAR if it's a custom variable."
+  (if (custom-variable-p (intern var))
+      (ivy-append-face var 'ivy-highlight-face)
+    var))
+
+(ivy-set-display-transformer
+ 'counsel-describe-variable 'counsel-describe-variable-transformer)
+
+;;;###autoload
+(defun counsel-describe-variable ()
+  "Forward to `describe-variable'.
+
+Variables declared using `defcustom' are highlighted according to
+`ivy-highlight-face'."
+  (interactive)
+  (let ((enable-recursive-minibuffers t))
+    (ivy-read
+     "Describe variable: "
+     (counsel-variable-list)
+     :keymap counsel-describe-map
+     :preselect (ivy-thing-at-point)
+     :history 'counsel-describe-symbol-history
+     :require-match t
+     :sort t
+     :action (lambda (x)
+               (funcall counsel-describe-variable-function (intern x)))
+     :caller 'counsel-describe-variable)))
+
+;;** `counsel-describe-function'
+(ivy-set-actions
+ 'counsel-describe-function
+ '(("I" counsel-info-lookup-symbol "info")
+   ("d" counsel--find-symbol "definition")))
+
+(defcustom counsel-describe-function-function #'describe-function
+  "Function to call to describe a function passed as parameter."
+  :type 'function
+  :group 'ivy)
+
+(defun counsel-describe-function-transformer (function-name)
+  "Propertize FUNCTION-NAME if it's an interactive function."
+  (if (commandp (intern function-name))
+      (ivy-append-face function-name 'ivy-highlight-face)
+    function-name))
+
+(ivy-set-display-transformer
+ 'counsel-describe-function 'counsel-describe-function-transformer)
+
+(defun ivy-function-called-at-point ()
+  (let ((f (function-called-at-point)))
+    (and f (symbol-name f))))
+
+(defcustom counsel-describe-function-preselect #'ivy-thing-at-point
+  "Determine what `counsel-describe-function' should preselect."
+  :group 'ivy
+  :type '(radio
+          (function-item ivy-thing-at-point)
+          (function-item ivy-function-called-at-point)))
+
+;;;###autoload
+(defun counsel-describe-function ()
+  "Forward to `describe-function'.
+
+Interactive functions \(i.e., commands) are highlighted according
+to `ivy-highlight-face'."
+  (interactive)
+  (let ((enable-recursive-minibuffers t))
+    (ivy-read "Describe function: "
+              (let (cands)
+                (mapatoms
+                 (lambda (x)
+                   (when (fboundp x)
+                     (push (symbol-name x) cands))))
+                cands)
+              :keymap counsel-describe-map
+              :preselect (funcall counsel-describe-function-preselect)
+              :history 'counsel-describe-symbol-history
+              :require-match t
+              :sort t
+              :action (lambda (x)
+                        (funcall counsel-describe-function-function (intern x)))
+              :caller 'counsel-describe-function)))
+
+;;** `counsel-set-variable'
+(defvar counsel-set-variable-history nil
+  "Store history for `counsel-set-variable'.")
+
+(defun counsel-read-setq-expression (sym)
+  "Read and eval a setq expression for SYM."
+  (setq this-command 'eval-expression)
+  (let* ((minibuffer-completing-symbol t)
+         (sym-value (symbol-value sym))
+         (expr (minibuffer-with-setup-hook
+                   (lambda ()
+                     (add-function :before-until (local 'eldoc-documentation-function)
+                                   #'elisp-eldoc-documentation-function)
+                     (add-hook 'completion-at-point-functions #'elisp-completion-at-point nil t)
+                     (run-hooks 'eval-expression-minibuffer-setup-hook)
+                     (goto-char (minibuffer-prompt-end))
+                     (forward-char 6)
+                     (insert (format "%S " sym)))
+                 (read-from-minibuffer "Eval: "
+                                       (format
+                                        (if (and sym-value (consp sym-value))
+                                            "(setq '%S)"
+                                          "(setq %S)")
+                                        sym-value)
+                                       read-expression-map t
+                                       'read-expression-history))))
+    (eval-expression expr)))
+
+(defun counsel--setq-doconst (x)
+  "Return a cons of description and value for X.
+X is an item of a radio- or choice-type defcustom."
+  (let (y)
+    (when (and (listp x)
+               (consp (setq y (last x))))
+      (unless (equal y '(function))
+        (setq x (car y))
+        (cons (prin1-to-string x)
+              (if (symbolp x)
+                  (list 'quote x)
+                x))))))
+
+(declare-function lv-message "ext:lv")
+(declare-function lv-delete-window "ext:lv")
+(declare-function custom-variable-documentation "cus-edit")
+
+;;;###autoload
+(defun counsel-set-variable (sym)
+  "Set a variable, with completion.
+
+When the selected variable is a `defcustom' with the type boolean
+or radio, offer completion of all possible values.
+
+Otherwise, offer a variant of `eval-expression', with the initial
+input corresponding to the chosen variable.
+
+With a prefix arg, restrict list to variables defined using
+`defcustom'."
+  (interactive (list (intern
+                      (ivy-read "Variable: " (counsel-variable-list)
+                                :predicate (and current-prefix-arg
+                                                (lambda (varname)
+                                                  (get (intern varname) 'custom-type)))
+                                :preselect (ivy-thing-at-point)
+                                :history 'counsel-set-variable-history))))
+  (let ((doc (and (require 'cus-edit)
+                  (require 'lv nil t)
+                  (not (string= "nil" (custom-variable-documentation sym)))
+                  (propertize (custom-variable-documentation sym)
+                              'face 'font-lock-comment-face)))
+        sym-type
+        cands)
+    (unwind-protect
+         (progn
+           (when doc
+             (lv-message doc))
+           (if (and (boundp sym)
+                    (setq sym-type (get sym 'custom-type))
+                    (cond
+                      ((and (consp sym-type)
+                            (memq (car sym-type) '(choice radio)))
+                       (setq cands (delq nil (mapcar #'counsel--setq-doconst (cdr sym-type)))))
+                      ((eq sym-type 'boolean)
+                       (setq cands '(("nil" . nil) ("t" . t))))
+                      (t nil)))
+               (let* ((sym-val (symbol-value sym))
+                      ;; Escape '%' chars if present
+                      (sym-val-str (replace-regexp-in-string "%" "%%" (format "%s" sym-val)))
+                      (res (ivy-read (format "Set (%S <%s>): " sym sym-val-str)
+                                     cands
+                                     :preselect (prin1-to-string sym-val))))
+                 (when res
+                   (setq res
+                         (if (assoc res cands)
+                             (cdr (assoc res cands))
+                           (read res)))
+                   (set sym (if (and (listp res) (eq (car res) 'quote))
+                                (cadr res)
+                              res))))
+             (unless (boundp sym)
+               (set sym nil))
+             (counsel-read-setq-expression sym)))
+      (when doc
+        (lv-delete-window)))))
+
+;;** `counsel-apropos'
+;;;###autoload
+(defun counsel-apropos ()
+  "Show all matching symbols.
+See `apropos' for further information about what is considered
+a symbol and how to search for them."
+  (interactive)
+  (ivy-read "Search for symbol (word list or regexp): "
+            (counsel-symbol-list)
+            :history 'counsel-apropos-history
+            :action (lambda (pattern)
+                      (when (string-equal pattern "")
+                        (user-error "Please specify a pattern"))
+                      ;; If the user selected a candidate form the list, we use
+                      ;; a pattern which matches only the selected symbol.
+                      (if (memq this-command '(ivy-immediate-done ivy-alt-done))
+                          ;; Regexp pattern are passed verbatim, other input is
+                          ;; split into words.
+                          (if (string-equal (regexp-quote pattern) pattern)
+                              (apropos (split-string pattern "[ \t]+" t))
+                            (apropos pattern))
+                        (apropos (concat "^" pattern "$"))))
+            :caller 'counsel-apropos))
+
+(defun counsel-symbol-list ()
+  "Return a list of all symbols."
+  (let (cands)
+    (mapatoms
+     (lambda (symbol)
+       (when (or (boundp symbol) (fboundp symbol))
+         (push (symbol-name symbol) cands))))
+    (delete "" cands)))
+
+;;** `counsel-info-lookup-symbol'
+(defvar info-lookup-mode)
+(declare-function info-lookup-guess-default "info-look")
+(declare-function info-lookup->completions "info-look")
+(declare-function info-lookup->mode-value "info-look")
+(declare-function info-lookup-select-mode "info-look")
+(declare-function info-lookup-change-mode "info-look")
+(declare-function info-lookup "info-look")
+
+;;;###autoload
+(defun counsel-info-lookup-symbol (symbol &optional mode)
+  "Forward to `info-lookup-symbol' with ivy completion."
+  (interactive
+   (progn
+     (require 'info-look)
+     ;; Courtesy of `info-lookup-interactive-arguments'
+     (let* ((topic 'symbol)
+            (mode (cond (current-prefix-arg
+                         (info-lookup-change-mode topic))
+                        ((info-lookup->mode-value
+                          topic (info-lookup-select-mode))
+                         info-lookup-mode)
+                        ((info-lookup-change-mode topic))))
+            (enable-recursive-minibuffers t))
+       (list (ivy-read "Describe symbol: " (info-lookup->completions topic mode)
+                       :history 'info-lookup-history
+                       :preselect (info-lookup-guess-default topic mode)
+                       :sort t
+                       :caller 'counsel-info-lookup-symbol)
+             mode))))
+  (info-lookup-symbol symbol mode))
+
+;;** `counsel-M-x'
+(defface counsel-key-binding
+  '((t :inherit font-lock-keyword-face))
+  "Face used by `counsel-M-x' for key bindings."
+  :group 'ivy-faces)
+
+(defun counsel-M-x-transformer (cmd)
+  "Return CMD annotated with its active key binding, if any."
+  (let ((key (where-is-internal (intern cmd) nil t)))
+    (if (not key)
+        cmd
+      ;; Prefer `<f2>' over `C-x 6' where applicable
+      (let ((i (cl-search [?\C-x ?6] key)))
+        (when i
+          (let ((dup (vconcat (substring key 0 i) [f2] (substring key (+ i 2))))
+                (map (current-global-map)))
+            (when (equal (lookup-key map key)
+                         (lookup-key map dup))
+              (setq key dup)))))
+      (setq key (key-description key))
+      (put-text-property 0 (length key) 'face 'counsel-key-binding key)
+      (format "%s (%s)" cmd key))))
+
+(defvar amx-initialized)
+(defvar amx-cache)
+(declare-function amx-initialize "ext:amx")
+(declare-function amx-detect-new-commands "ext:amx")
+(declare-function amx-update "ext:amx")
+(declare-function amx-rank "ext:amx")
+(defvar smex-initialized-p)
+(defvar smex-ido-cache)
+(declare-function smex-initialize "ext:smex")
+(declare-function smex-detect-new-commands "ext:smex")
+(declare-function smex-update "ext:smex")
+(declare-function smex-rank "ext:smex")
+
+(defun counsel--M-x-externs ()
+  "Return `counsel-M-x' candidates from external packages.
+The currently supported packages are, in order of precedence,
+`amx' and `smex'."
+  (cond ((require 'amx nil t)
+         (unless amx-initialized
+           (amx-initialize))
+         (when (amx-detect-new-commands)
+           (amx-update))
+         (mapcar
+          (lambda (command-item) (symbol-name (car command-item))) amx-cache))
+        ((require 'smex nil t)
+         (unless smex-initialized-p
+           (smex-initialize))
+         (when (smex-detect-new-commands)
+           (smex-update))
+         smex-ido-cache)))
+
+(defun counsel--M-x-prompt ()
+  "String for `M-x' plus the string representation of `current-prefix-arg'."
+  (if (not current-prefix-arg)
+      "M-x "
+    (concat
+     (if (eq current-prefix-arg '-)
+         "- "
+       (if (integerp current-prefix-arg)
+           (format "%d " current-prefix-arg)
+         (if (= (car current-prefix-arg) 4)
+             "C-u "
+           (format "%d " (car current-prefix-arg)))))
+     "M-x ")))
+
+(defvar counsel-M-x-history nil
+  "History for `counsel-M-x'.")
+
+;;;###autoload
+(defun counsel-M-x (&optional initial-input)
+  "Ivy version of `execute-extended-command'.
+Optional INITIAL-INPUT is the initial input in the minibuffer.
+This function integrates with either the `amx' or `smex' package
+when available, in that order of precedence."
+  (interactive)
+  ;; When `counsel-M-x' returns, `last-command' would be set to
+  ;; `counsel-M-x' because :action hasn't been invoked yet.
+  ;; Instead, preserve the old value of `this-command'.
+  (setq this-command last-command)
+  (setq real-this-command real-last-command)
+  (let ((externs (counsel--M-x-externs)))
+    (ivy-read (counsel--M-x-prompt) (or externs obarray)
+              :predicate (and (not externs) #'commandp)
+              :require-match t
+              :history 'counsel-M-x-history
+              :action (lambda (cmd)
+                        (setq cmd (intern cmd))
+                        (cond ((bound-and-true-p amx-initialized)
+                               (amx-rank cmd))
+                              ((bound-and-true-p smex-initialized-p)
+                               (smex-rank cmd)))
+                        (setq prefix-arg current-prefix-arg)
+                        (setq this-command cmd)
+                        (setq real-this-command cmd)
+                        (command-execute cmd 'record))
+              :sort (not externs)
+              :keymap counsel-describe-map
+              :initial-input initial-input
+              :caller 'counsel-M-x)))
+
+(ivy-set-actions
+ 'counsel-M-x
+ `(("d" counsel--find-symbol "definition")
+   ("h" ,(lambda (x) (describe-function (intern x))) "help")))
+
+(ivy-set-display-transformer
+ 'counsel-M-x
+ 'counsel-M-x-transformer)
+
+;;** `counsel-command-history'
+(defun counsel-command-history-action-eval (cmd)
+  "Eval the command CMD."
+  (eval (read cmd)))
+
+(defun counsel-command-history-action-edit-and-eval (cmd)
+  "Edit and eval the command CMD."
+  (edit-and-eval-command "Eval: " (read cmd)))
+
+(ivy-set-actions
+ 'counsel-command-history
+ '(("r" counsel-command-history-action-eval           "eval command")
+   ("e" counsel-command-history-action-edit-and-eval  "edit and eval command")))
+
+(defun counsel-command-history ()
+  "Show the history of commands."
+  (interactive)
+  (ivy-read "%d Command: " (mapcar #'prin1-to-string command-history)
+            :require-match t
+            :action #'counsel-command-history-action-eval
+            :caller 'counsel-command-history))
+
+;;** `counsel-load-library'
+(defun counsel-library-candidates ()
+  "Return a list of completion candidates for `counsel-load-library'."
+  (interactive)
+  (let ((dirs load-path)
+        (suffix (concat (regexp-opt '(".el" ".el.gz") t) "\\'"))
+        (cands (make-hash-table :test #'equal))
+        short-name
+        old-val
+        dir-parent
+        res)
+    (dolist (dir dirs)
+      (when (file-directory-p dir)
+        (dolist (file (file-name-all-completions "" dir))
+          (when (string-match suffix file)
+            (unless (string-match "pkg.elc?$" file)
+              (setq short-name (substring file 0 (match-beginning 0)))
+              (if (setq old-val (gethash short-name cands))
+                  (progn
+                    ;; assume going up directory once will resolve name clash
+                    (setq dir-parent (counsel-directory-name (cdr old-val)))
+                    (puthash short-name
+                             (cons
+                              (counsel-string-compose dir-parent (car old-val))
+                              (cdr old-val))
+                             cands)
+                    (setq dir-parent (counsel-directory-name dir))
+                    (puthash (concat dir-parent short-name)
+                             (cons
+                              (propertize
+                               (counsel-string-compose
+                                dir-parent short-name)
+                               'full-name (expand-file-name file dir))
+                              dir)
+                             cands))
+                (puthash short-name
+                         (cons (propertize
+                                short-name
+                                'full-name (expand-file-name file dir))
+                               dir) cands)))))))
+    (maphash (lambda (_k v) (push (car v) res)) cands)
+    (nreverse res)))
+
+;;;###autoload
+(defun counsel-load-library ()
+  "Load a selected the Emacs Lisp library.
+The libraries are offered from `load-path'."
+  (interactive)
+  (let ((cands (counsel-library-candidates)))
+    (ivy-read "Load library: " cands
+              :action (lambda (x)
+                        (load-library
+                         (get-text-property 0 'full-name x)))
+              :keymap counsel-describe-map)))
+
+(ivy-set-actions
+ 'counsel-load-library
+ '(("d" counsel--find-symbol "definition")))
+
+;;** `counsel-find-library'
+(declare-function find-library-name "find-func")
+(defun counsel-find-library-other-window (library)
+  (let ((buf (find-file-noselect (find-library-name library))))
+    (pop-to-buffer buf 'other-window)))
+
+(defun counsel-find-library-other-frame (library)
+  (let ((buf (find-file-noselect (find-library-name library))))
+    (condition-case nil
+        (switch-to-buffer-other-frame buf)
+      (error (pop-to-buffer buf)))))
+
+(ivy-set-actions
+ 'counsel-find-library
+ '(("j" counsel-find-library-other-window "other window")
+   ("f" counsel-find-library-other-frame "other frame")))
+
+;;;###autoload
+(defun counsel-find-library ()
+  "Visit a selected the Emacs Lisp library.
+The libraries are offered from `load-path'."
+  (interactive)
+  (let ((cands (counsel-library-candidates)))
+    (ivy-read "Find library: " cands
+              :action #'counsel--find-symbol
+              :keymap counsel-describe-map
+              :caller 'counsel-find-library)))
+
+;;** `counsel-load-theme'
+(declare-function powerline-reset "ext:powerline")
+
+(defun counsel-load-theme-action (x)
+  "Disable current themes and load theme X."
+  (condition-case nil
+      (progn
+        (mapc #'disable-theme custom-enabled-themes)
+        (load-theme (intern x) t)
+        (when (fboundp 'powerline-reset)
+          (powerline-reset)))
+    (error "Problem loading theme %s" x)))
+
+;;;###autoload
+(defun counsel-load-theme ()
+  "Forward to `load-theme'.
+Usable with `ivy-resume', `ivy-next-line-and-call' and
+`ivy-previous-line-and-call'."
+  (interactive)
+  (ivy-read "Load custom theme: "
+            (mapcar 'symbol-name
+                    (custom-available-themes))
+            :action #'counsel-load-theme-action
+            :caller 'counsel-load-theme))
+
+;;** `counsel-descbinds'
+(ivy-set-actions
+ 'counsel-descbinds
+ '(("d" counsel-descbinds-action-find "definition")
+   ("I" counsel-descbinds-action-info "info")))
+
+(defvar counsel-descbinds-history nil
+  "History for `counsel-descbinds'.")
+
+(defun counsel--descbinds-cands (&optional prefix buffer)
+  "Get key bindings starting with PREFIX in BUFFER.
+See `describe-buffer-bindings' for further information."
+  (let ((buffer (or buffer (current-buffer)))
+        (re-exclude (regexp-opt
+                     '("<vertical-line>" "<bottom-divider>" "<right-divider>"
+                       "<mode-line>" "<C-down-mouse-2>" "<left-fringe>"
+                       "<right-fringe>" "<header-line>"
+                       "<vertical-scroll-bar>" "<horizontal-scroll-bar>")))
+        res)
+    (with-temp-buffer
+      (let ((indent-tabs-mode t))
+        (describe-buffer-bindings buffer prefix))
+      (goto-char (point-min))
+      ;; Skip the "Key translations" section
+      (re-search-forward "")
+      (forward-char 1)
+      (while (not (eobp))
+        (when (looking-at "^\\([^\t\n]+\\)[\t ]*\\(.*\\)$")
+          (let ((key (match-string 1))
+                (fun (match-string 2))
+                cmd)
+            (unless (or (member fun '("??" "self-insert-command"))
+                        (string-match re-exclude key)
+                        (not (or (commandp (setq cmd (intern-soft fun)))
+                                 (member fun '("Prefix Command")))))
+              (push
+               (cons (format
+                      "%-15s %s"
+                      (propertize key 'face 'font-lock-builtin-face)
+                      fun)
+                     (cons key cmd))
+               res))))
+        (forward-line 1)))
+    (nreverse res)))
+
+(defun counsel-descbinds-action-describe (x)
+  "Describe function of candidate X.
+See `describe-function' for further information."
+  (let ((cmd (cddr x)))
+    (describe-function cmd)))
+
+(defun counsel-descbinds-action-find (x)
+  "Find symbol definition of candidate X.
+See `counsel--find-symbol' for further information."
+  (let ((cmd (cddr x)))
+    (counsel--find-symbol (symbol-name cmd))))
+
+(defun counsel-descbinds-action-info (x)
+  "Display symbol definition of candidate X, as found in the relevant manual.
+See `info-lookup-symbol' for further information."
+  (let ((cmd (cddr x)))
+    (counsel-info-lookup-symbol (symbol-name cmd))))
+
+;;;###autoload
+(defun counsel-descbinds (&optional prefix buffer)
+  "Show a list of all defined keys and their definitions.
+If non-nil, show only bindings that start with PREFIX.
+BUFFER defaults to the current one."
+  (interactive)
+  (ivy-read "Bindings: " (counsel--descbinds-cands prefix buffer)
+            :action #'counsel-descbinds-action-describe
+            :history 'counsel-descbinds-history
+            :caller 'counsel-descbinds))
+
+;;** `counsel-describe-face'
+(defcustom counsel-describe-face-function #'describe-face
+  "Function to call to describe a face or face name argument."
+  :type 'function
+  :group 'ivy)
+
+(defun counsel--face-at-point ()
+  "Return name of face around point.
+Try detecting a face name in the text around point before falling
+back to the face of the character after point, and finally the
+`default' face."
+  (symbol-name (or (face-at-point t) 'default)))
+
+(defun counsel-describe-face ()
+  "Completion for `describe-face'."
+  (interactive)
+  (ivy-read "Face: " (face-list)
+            :require-match t
+            :history 'face-name-history
+            :preselect (counsel--face-at-point)
+            :sort t
+            :action counsel-describe-face-function
+            :caller 'counsel-describe-face))
+
+(defun counsel-customize-face (name)
+  "Customize face with NAME."
+  (customize-face (intern name)))
+
+(defun counsel-customize-face-other-window (name)
+  "Customize face with NAME in another window."
+  (customize-face-other-window (intern name)))
+
+(ivy-set-actions
+ 'counsel-describe-face
+ '(("c" counsel-customize-face "customize")
+   ("C" counsel-customize-face-other-window "customize other window")))
+
+;;** `counsel-faces'
+(defun counsel--faces-format-function (format)
+  "Return an `ivy-format-function' for `counsel-faces'.
+Each candidate is formatted based on the given FORMAT string."
+  (let ((formatter (lambda (name)
+                     (format format name (propertize list-faces-sample-text
+                                                     'face (intern name))))))
+    (lambda (names)
+      (ivy--format-function-generic
+       (lambda (name)
+         (funcall formatter (ivy--add-face name 'ivy-current-match)))
+       formatter names "\n"))))
+
+;;;###autoload
+(defun counsel-faces ()
+  "Complete faces with preview.
+Actions are provided by default for describing or customizing the
+selected face."
+  (interactive)
+  (let* ((names (mapcar #'symbol-name (face-list)))
+         (ivy-format-function
+          (counsel--faces-format-function
+           (format "%%-%ds %%s"
+                   (apply #'max 0 (mapcar #'string-width names))))))
+    (ivy-read "Face: " names
+              :require-match t
+              :history 'face-name-history
+              :preselect (counsel--face-at-point)
+              :sort t
+              :action counsel-describe-face-function
+              :caller 'counsel-faces)))
+
+(ivy-set-actions
+ 'counsel-faces
+ '(("c" counsel-customize-face "customize")
+   ("C" counsel-customize-face-other-window "customize other window")))
+
+;;* Git
+;;** `counsel-git'
+(defvar counsel-git-cmd "git ls-files --full-name --"
+  "Command for `counsel-git'.")
+
+(ivy-set-actions
+ 'counsel-git
+ '(("j" find-file-other-window "other window")
+   ("x" counsel-find-file-extern "open externally")))
+
+(defun counsel-locate-git-root ()
+  "Locate the root of the git repository containing the current buffer."
+  (or (locate-dominating-file default-directory ".git")
+      (error "Not in a git repository")))
+
+;;;###autoload
+(defun counsel-git (&optional initial-input)
+  "Find file in the current Git repository.
+INITIAL-INPUT can be given as the initial minibuffer input."
+  (interactive)
+  (counsel-require-program (car (split-string counsel-git-cmd)))
+  (ivy-set-prompt 'counsel-git counsel-prompt-function)
+  (let* ((default-directory (expand-file-name (counsel-locate-git-root)))
+         (cands (split-string
+                 (shell-command-to-string counsel-git-cmd)
+                 "\n"
+                 t)))
+    (ivy-read "Find file" cands
+              :initial-input initial-input
+              :action #'counsel-git-action
+              :caller 'counsel-git)))
+
+(defun counsel-git-action (x)
+  "Find file X in current Git repository."
+  (with-ivy-window
+    (let ((default-directory (ivy-state-directory ivy-last)))
+      (find-file x))))
+
+(defun counsel-git-occur ()
+  "Occur function for `counsel-git' using `counsel-cmd-to-dired'."
+  (cd (ivy-state-directory ivy-last))
+  (counsel-cmd-to-dired
+   (counsel--expand-ls
+    (format "%s | grep -i -E '%s' | xargs ls"
+            counsel-git-cmd
+            (counsel-unquote-regex-parens ivy--old-re)))))
+
+(defvar counsel-dired-listing-switches "-alh"
+  "Switches passed to `ls' for `counsel-cmd-to-dired'.")
+
+(defun counsel-cmd-to-dired (full-cmd &optional filter)
+  "Adapted from `find-dired'."
+  (let ((inhibit-read-only t))
+    (erase-buffer)
+    (dired-mode default-directory counsel-dired-listing-switches)
+    (insert "  " default-directory ":\n")
+    (let ((point (point)))
+      (insert "  " full-cmd "\n")
+      (dired-insert-set-properties point (point)))
+    (setq-local dired-sort-inhibit t)
+    (setq-local revert-buffer-function
+                (lambda (_1 _2) (counsel-cmd-to-dired full-cmd)))
+    (setq-local dired-subdir-alist
+                (list (cons default-directory (point-min-marker))))
+    (let ((proc (start-process-shell-command
+                 "counsel-cmd" (current-buffer) full-cmd)))
+      (set-process-filter proc filter)
+      (set-process-sentinel
+       proc
+       (lambda (process _msg)
+         (when (and (eq (process-status process) 'exit)
+                    (zerop (process-exit-status process)))
+           (goto-char (point-min))
+           (forward-line 2)
+           (dired-move-to-filename)))))))
+
+(ivy-set-occur 'counsel-git 'counsel-git-occur)
+
+;;** `counsel-git-grep'
+(defvar counsel-git-grep-map
+  (let ((map (make-sparse-keymap)))
+    (define-key map (kbd "C-l") 'ivy-call-and-recenter)
+    (define-key map (kbd "M-q") 'counsel-git-grep-query-replace)
+    (define-key map (kbd "C-c C-m") 'counsel-git-grep-switch-cmd)
+    map))
+
+(ivy-set-occur 'counsel-git-grep 'counsel-git-grep-occur)
+(ivy-set-display-transformer 'counsel-git-grep 'counsel-git-grep-transformer)
+
+(defvar counsel-git-grep-cmd-default "git --no-pager grep --full-name -n --no-color -i -I -e \"%s\""
+  "Initial command for `counsel-git-grep'.")
+
+(defvar counsel-git-grep-cmd nil
+  "Store the command for `counsel-git-grep'.")
+
+(defvar counsel--git-grep-count nil
+  "Store the line count in current repository.")
+
+(defvar counsel--git-grep-count-threshold 20000
+  "The maximum threshold beyond which repositories are considered large.")
+
+(defvar counsel-git-grep-history nil
+  "History for `counsel-git-grep'.")
+
+(defvar counsel-git-grep-cmd-history
+  (list counsel-git-grep-cmd-default)
+  "History for `counsel-git-grep' shell commands.")
+
+(defcustom counsel-grep-post-action-hook nil
+  "Hook that runs after the point moves to the next candidate.
+Typical value: '(recenter)."
+  :type 'hook
+  :group 'ivy)
+
+(defun counsel-git-grep-function (str &optional _pred &rest _unused)
+  "Grep in the current git repository for STRING."
+  (or
+   (and (> counsel--git-grep-count counsel--git-grep-count-threshold)
+        (counsel-more-chars))
+   (let* ((default-directory (ivy-state-directory ivy-last))
+          (cmd (format counsel-git-grep-cmd
+                       (setq ivy--old-re (ivy--regex str t)))))
+     (if (<= counsel--git-grep-count counsel--git-grep-count-threshold)
+         (split-string (shell-command-to-string cmd) "\n" t)
+       (counsel--gg-candidates (ivy--regex str))
+       nil))))
+
+(defun counsel-git-grep-action (x)
+  "Go to occurrence X in current Git repository."
+  (when (string-match "\\`\\(.*?\\):\\([0-9]+\\):\\(.*\\)\\'" x)
+    (let ((file-name (match-string-no-properties 1 x))
+          (line-number (match-string-no-properties 2 x)))
+      (find-file (expand-file-name
+                  file-name
+                  (ivy-state-directory ivy-last)))
+      (goto-char (point-min))
+      (forward-line (1- (string-to-number line-number)))
+      (re-search-forward (ivy--regex ivy-text t) (line-end-position) t)
+      (swiper--ensure-visible)
+      (run-hooks 'counsel-grep-post-action-hook)
+      (unless (eq ivy-exit 'done)
+        (swiper--cleanup)
+        (swiper--add-overlays (ivy--regex ivy-text))))))
+
+(defun counsel-git-grep-matcher (regexp candidates)
+  "Return REGEXP matching CANDIDATES for `counsel-git-grep'."
+  (or (and (equal regexp ivy--old-re)
+           ivy--old-cands)
+      (prog1
+          (setq ivy--old-cands
+                (cl-remove-if-not
+                 (lambda (x)
+                   (ignore-errors
+                     (when (string-match "^[^:]+:[^:]+:" x)
+                       (setq x (substring x (match-end 0)))
+                       (if (stringp regexp)
+                           (string-match regexp x)
+                         (let ((res t))
+                           (dolist (re regexp)
+                             (setq res
+                                   (and res
+                                        (ignore-errors
+                                          (if (cdr re)
+                                              (string-match (car re) x)
+                                            (not (string-match (car re) x)))))))
+                           res)))))
+                 candidates))
+        (setq ivy--old-re regexp))))
+
+(defun counsel-git-grep-transformer (str)
+  "Higlight file and line number in STR."
+  (when (string-match "\\`\\([^:]+\\):\\([^:]+\\):" str)
+    (ivy-add-face-text-property (match-beginning 1) (match-end 1)
+                                'compilation-info
+                                str)
+    (ivy-add-face-text-property (match-beginning 2) (match-end 2)
+                                'compilation-line-number
+                                str))
+  str)
+
+(defvar counsel-git-grep-projects-alist nil
+  "An alist of project directory to \"git-grep\" command.
+Allows to automatically use a custom \"git-grep\" command for all
+files in a project.")
+
+(defun counsel--git-grep-cmd-and-proj (cmd)
+  (let ((dd (expand-file-name default-directory))
+        proj)
+    (cond
+      ((stringp cmd))
+      (cmd
+       (if (setq proj
+                 (cl-find-if
+                  (lambda (x)
+                    (string-match (car x) dd))
+                  counsel-git-grep-projects-alist))
+           (setq cmd (cdr proj))
+         (setq cmd
+               (ivy-read "cmd: " counsel-git-grep-cmd-history
+                         :history 'counsel-git-grep-cmd-history
+                         :re-builder #'ivy--regex))
+         (setq counsel-git-grep-cmd-history
+               (delete-dups counsel-git-grep-cmd-history))))
+      (t
+       (setq cmd counsel-git-grep-cmd-default)))
+    (cons proj cmd)))
+
+(defun counsel--git-grep-count-func-default ()
+  "Default defun to calculate `counsel--git-grep-count'."
+  (if (eq system-type 'windows-nt)
+      0
+    (read (shell-command-to-string "du -s \"$(git rev-parse --git-dir)\" 2>/dev/null"))))
+
+(defvar counsel--git-grep-count-func #'counsel--git-grep-count-func-default
+  "Defun to calculate `counsel--git-grep-count' for `counsel-git-grep'.")
+
+;;;###autoload
+(defun counsel-git-grep (&optional cmd initial-input)
+  "Grep for a string in the current git repository.
+When CMD is a string, use it as a \"git grep\" command.
+When CMD is non-nil, prompt for a specific \"git grep\" command.
+INITIAL-INPUT can be given as the initial minibuffer input."
+  (interactive "P")
+  (ivy-set-prompt 'counsel-git-grep counsel-prompt-function)
+  (let ((proj-and-cmd (counsel--git-grep-cmd-and-proj cmd))
+        proj)
+    (setq proj (car proj-and-cmd))
+    (setq counsel-git-grep-cmd (cdr proj-and-cmd))
+    (counsel-require-program (car (split-string counsel-git-grep-cmd)))
+    (let ((collection-function
+           (if proj
+               #'counsel-git-grep-proj-function
+             #'counsel-git-grep-function))
+          (unwind-function
+           (if proj
+               (lambda ()
+                 (counsel-delete-process)
+                 (swiper--cleanup))
+             (lambda ()
+               (swiper--cleanup))))
+          (default-directory (if proj
+                                 (car proj)
+                               (counsel-locate-git-root))))
+      (setq counsel--git-grep-count (funcall counsel--git-grep-count-func))
+      (ivy-read "git grep" collection-function
+                :initial-input initial-input
+                :matcher #'counsel-git-grep-matcher
+                :dynamic-collection (or proj
+                                        (>
+                                         counsel--git-grep-count
+                                         counsel--git-grep-count-threshold))
+                :keymap counsel-git-grep-map
+                :action #'counsel-git-grep-action
+                :unwind unwind-function
+                :history 'counsel-git-grep-history
+                :caller 'counsel-git-grep))))
+(cl-pushnew 'counsel-git-grep ivy-highlight-grep-commands)
+
+(defun counsel-git-grep-proj-function (str)
+  "Grep for STR in the current git repository."
+  (or
+   (counsel-more-chars)
+   (let ((regex (setq ivy--old-re
+                      (ivy--regex str t))))
+     (counsel--async-command (format counsel-git-grep-cmd regex))
+     nil)))
+
+(defun counsel-git-grep-switch-cmd ()
+  "Set `counsel-git-grep-cmd' to a different value."
+  (interactive)
+  (setq counsel-git-grep-cmd
+        (ivy-read "cmd: " counsel-git-grep-cmd-history
+                  :history 'counsel-git-grep-cmd-history))
+  (setq counsel-git-grep-cmd-history
+        (delete-dups counsel-git-grep-cmd-history))
+  (unless (ivy-state-dynamic-collection ivy-last)
+    (setq ivy--all-candidates
+          (all-completions "" 'counsel-git-grep-function))))
+
+(defvar counsel-gg-state nil
+  "The current state of candidates / count sync.")
+
+(defun counsel--gg-candidates (regex)
+  "Return git grep candidates for REGEX."
+  (setq counsel-gg-state -2)
+  (counsel--gg-count regex)
+  (let ((default-directory (ivy-state-directory ivy-last)))
+    (set-process-filter
+     (counsel--async-command (concat (format counsel-git-grep-cmd regex)
+                                     " | head -n 200")
+                             #'counsel--gg-sentinel)
+     nil)))
+
+(defun counsel--gg-sentinel (process _msg)
+  "Sentinel function for a `counsel-git-grep' PROCESS."
+  (when (eq (process-status process) 'exit)
+    (cl-case (process-exit-status process)
+      ((0 141)
+       (with-current-buffer (process-buffer process)
+         (setq ivy--all-candidates
+               (or (split-string (buffer-string) "\n" t)
+                   '("")))
+         (setq ivy--old-cands ivy--all-candidates))
+       (when (zerop (cl-incf counsel-gg-state))
+         (ivy--exhibit)))
+      (1
+       (setq ivy--all-candidates '("Error"))
+       (setq ivy--old-cands ivy--all-candidates)
+       (ivy--exhibit)))))
+
+(defun counsel--gg-count-sentinel (process _msg)
+  "Sentinel function for a `counsel--gg-count' PROCESS."
+  (when (and (eq (process-status process) 'exit)
+             (zerop (process-exit-status process)))
+    (with-current-buffer (process-buffer process)
+      (setq ivy--full-length (string-to-number (buffer-string))))
+    (when (zerop (cl-incf counsel-gg-state))
+      (ivy--exhibit))))
+
+(defun counsel--gg-count (regex &optional no-async)
+  "Count the number of results matching REGEX in `counsel-git-grep'.
+The command to count the matches is called asynchronously.
+If NO-ASYNC is non-nil, do it synchronously instead."
+  (let ((default-directory (ivy-state-directory ivy-last))
+        (cmd (concat
+              (format (replace-regexp-in-string
+                       "--full-name" "-c"
+                       counsel-git-grep-cmd)
+                      ;; "git grep -i -c '%s'"
+                      (replace-regexp-in-string
+                       "-" "\\\\-"
+                       (replace-regexp-in-string "'" "''" regex)))
+              " | sed 's/.*:\\(.*\\)/\\1/g' | awk '{s+=$1} END {print s}'")))
+    (if no-async
+        (string-to-number (shell-command-to-string cmd))
+      (set-process-filter
+       (counsel--async-command cmd #'counsel--gg-count-sentinel
+                               nil " *counsel-gg-count*")
+       nil))))
+
+(defun counsel-git-grep-occur ()
+  "Generate a custom occur buffer for `counsel-git-grep'.
+When REVERT is non-nil, regenerate the current *ivy-occur* buffer."
+  (unless (eq major-mode 'ivy-occur-grep-mode)
+    (ivy-occur-grep-mode)
+    (setq default-directory (ivy-state-directory ivy-last)))
+  (setq ivy-text
+        (and (string-match "\"\\(.*\\)\"" (buffer-name))
+             (match-string 1 (buffer-name))))
+  (let* ((regex (funcall ivy--regex-function ivy-text))
+         (positive-pattern (replace-regexp-in-string
+                            ;; git-grep can't handle .*?
+                            "\\.\\*\\?" ".*"
+                            (if (stringp regex) regex (caar regex))))
+         (negative-patterns
+          (if (stringp regex) ""
+            (mapconcat (lambda (x)
+                         (and (null (cdr x))
+                              (format "| grep -v %s" (car x))))
+                       regex
+                       " ")))
+         (cmd (concat (format counsel-git-grep-cmd positive-pattern) negative-patterns))
+         cands)
+    (setq cands (split-string
+                 (shell-command-to-string cmd)
+                 "\n"
+                 t))
+    ;; Need precise number of header lines for `wgrep' to work.
+    (insert (format "-*- mode:grep; default-directory: %S -*-\n\n\n"
+                    default-directory))
+    (insert (format "%d candidates:\n" (length cands)))
+    (ivy--occur-insert-lines
+     (mapcar
+      (lambda (cand) (concat "./" cand))
+      cands))))
+
+(defun counsel-git-grep-query-replace ()
+  "Start `query-replace' with string to replace from last search string."
+  (interactive)
+  (unless (window-minibuffer-p)
+    (user-error
+     "Should only be called in the minibuffer through `counsel-git-grep-map'"))
+  (let* ((enable-recursive-minibuffers t)
+         (from (ivy--regex ivy-text))
+         (to (query-replace-read-to from "Query replace" t)))
+    (ivy-exit-with-action
+     (lambda (_)
+       (let (done-buffers)
+         (dolist (cand ivy--old-cands)
+           (when (string-match "\\`\\(.*?\\):\\([0-9]+\\):\\(.*\\)\\'" cand)
+             (with-ivy-window
+               (let ((file-name (match-string-no-properties 1 cand)))
+                 (setq file-name (expand-file-name
+                                  file-name
+                                  (ivy-state-directory ivy-last)))
+                 (unless (member file-name done-buffers)
+                   (push file-name done-buffers)
+                   (find-file file-name)
+                   (goto-char (point-min)))
+                 (perform-replace from to t t nil))))))))))
+
+;;** `counsel-git-stash'
+(defun counsel-git-stash-kill-action (x)
+  "Add git stash command to kill ring.
+The git command applies the stash entry where candidate X was found in."
+  (when (string-match "\\([^:]+\\):" x)
+    (kill-new (message (format "git stash apply %s" (match-string 1 x))))))
+
+;;;###autoload
+(defun counsel-git-stash ()
+  "Search through all available git stashes."
+  (interactive)
+  (let* ((default-directory (counsel-locate-git-root))
+         (cands (split-string (shell-command-to-string
+                               "IFS=$'\n'
+for i in `git stash list --format=\"%gd\"`; do
+    git stash show -p $i | grep -H --label=\"$i\" \"$1\"
+done") "\n" t)))
+    (ivy-read "git stash: " cands
+              :action 'counsel-git-stash-kill-action
+              :caller 'counsel-git-stash)))
+
+;;** `counsel-git-log'
+(defvar counsel-git-log-cmd "GIT_PAGER=cat git log --grep '%s'"
+  "Command used for \"git log\".")
+
+(defvar counsel-git-log-split-string-re "\ncommit "
+  "The `split-string' separates when split output of `counsel-git-log-cmd'.")
+
+(defun counsel-git-log-function (str)
+  "Search for STR in git log."
+  (or
+   (counsel-more-chars)
+   (progn
+     ;; `counsel--yank-pop-format-function' uses this
+     (setq ivy--old-re (funcall ivy--regex-function str))
+     (counsel--async-command
+      ;; "git log --grep" likes to have groups quoted e.g. \(foo\).
+      ;; But it doesn't like the non-greedy ".*?".
+      (format counsel-git-log-cmd
+              (replace-regexp-in-string "\\.\\*\\?" ".*"
+                                        (ivy-re-to-str ivy--old-re))))
+     nil)))
+
+(defun counsel-git-log-action (x)
+  "Add candidate X to kill ring."
+  (message "%S" (kill-new x)))
+
+;;** `counsel-git-change-worktree'
+(defun counsel-git-change-worktree-action (git-root-dir tree)
+  "Find the corresponding file in the worktree located at tree.
+The current buffer is assumed to be in a subdirectory of GIT-ROOT-DIR.
+TREE is the selected candidate."
+  (let* ((new-root-dir (counsel-git-worktree-parse-root tree))
+         (tree-filename (file-relative-name (buffer-file-name) git-root-dir))
+         (file-name (expand-file-name tree-filename new-root-dir)))
+    (find-file file-name)))
+
+(defun counsel-git-worktree-list ()
+  "List worktrees in the git repository containing the current buffer."
+  (let ((default-directory (counsel-locate-git-root)))
+    (split-string (shell-command-to-string "git worktree list") "\n" t)))
+
+(defun counsel-git-worktree-parse-root (tree)
+  "Return worktree from candidate TREE."
+  (substring tree 0 (string-match " " tree)))
+
+(defun counsel-git-close-worktree-files-action (root-dir)
+  "Close all buffers from the worktree located at ROOT-DIR."
+  (setq root-dir (counsel-git-worktree-parse-root root-dir))
+  (save-excursion
+    (dolist (buf (buffer-list))
+      (set-buffer buf)
+      (and buffer-file-name
+           (string= "." (file-relative-name root-dir (counsel-locate-git-root)))
+           (kill-buffer buf)))))
+
+(ivy-set-actions
+ 'counsel-git-change-worktree
+ '(("k" counsel-git-close-worktree-files-action "kill all")))
+
+;;;###autoload
+(defun counsel-git-change-worktree ()
+  "Find the file corresponding to the current buffer on a different worktree."
+  (interactive)
+  (let ((default-directory (counsel-locate-git-root)))
+    (ivy-read "Select worktree: "
+              (or (cl-delete default-directory (counsel-git-worktree-list)
+                             :key #'counsel-git-worktree-parse-root :test #'string=)
+                  (error "No other worktrees!"))
+              :action (lambda (tree)
+                        (counsel-git-change-worktree-action
+                         (ivy-state-directory ivy-last) tree))
+              :require-match t
+              :caller 'counsel-git-change-worktree)))
+
+;;** `counsel-git-checkout'
+(defun counsel-git-checkout-action (branch)
+  "Call the \"git checkout BRANCH\" command.
+
+BRANCH is a string whose first word designates the command argument."
+  (shell-command
+   (format "git checkout %s" (substring branch 0 (string-match " " branch)))))
+
+(defun counsel-git-branch-list ()
+  "Return list of branches in the current git repository.
+Value comprises all local and remote branches bar the one
+currently checked out."
+  (cl-mapcan (lambda (line)
+               (and (string-match "\\`[[:blank:]]+" line)
+                    (list (substring line (match-end 0)))))
+             (let ((default-directory (counsel-locate-git-root)))
+               (split-string (shell-command-to-string "git branch -vv --all")
+                             "\n" t))))
+
+;;;###autoload
+(defun counsel-git-checkout ()
+  "Call the \"git checkout\" command."
+  (interactive)
+  (ivy-read "Checkout branch: " (counsel-git-branch-list)
+            :action #'counsel-git-checkout-action
+            :caller 'counsel-git-checkout))
+
+(defvar counsel-yank-pop-truncate-radius)
+
+;;;###autoload
+(defun counsel-git-log ()
+  "Call the \"git log --grep\" shell command."
+  (interactive)
+  (let ((counsel-async-split-string-re counsel-git-log-split-string-re)
+        (counsel-async-ignore-re "^[ \n]*$")
+        (counsel-yank-pop-truncate-radius 5)
+        (ivy-format-function #'counsel--yank-pop-format-function))
+    (ivy-read "Grep log: " #'counsel-git-log-function
+              :dynamic-collection t
+              :action #'counsel-git-log-action
+              :unwind #'counsel-delete-process
+              :caller 'counsel-git-log)))
+
+(add-to-list 'ivy-height-alist '(counsel-git-log . 4))
+
+;;* File
+;;** `counsel-find-file'
+(defvar counsel-find-file-map
+  (let ((map (make-sparse-keymap)))
+    (define-key map (kbd "C-DEL") 'counsel-up-directory)
+    (define-key map (kbd "C-<backspace>") 'counsel-up-directory)
+    (define-key map (kbd "C-M-y") 'counsel-yank-directory)
+    map))
+
+(defun counsel-yank-directory ()
+  "Yank the current directory into the minibuffer."
+  (interactive)
+  (insert ivy--directory))
+
+(when (executable-find "git")
+  (add-to-list 'ivy-ffap-url-functions 'counsel-github-url-p)
+  (add-to-list 'ivy-ffap-url-functions 'counsel-emacs-url-p))
+(add-to-list 'ivy-ffap-url-functions 'counsel-url-expand)
+(defun counsel-find-file-cd-bookmark-action (_)
+  "Reset `counsel-find-file' from selected directory."
+  (ivy-read "cd: "
+            (progn
+              (ivy--virtual-buffers)
+              (delete-dups
+               (mapcar (lambda (x) (file-name-directory (cdr x)))
+                       ivy--virtual-buffers)))
+            :action (lambda (x)
+                      (let ((default-directory (file-name-directory x)))
+                        (counsel-find-file)))))
+
+(defcustom counsel-root-command "sudo"
+  "Command to gain root privileges."
+  :type 'string
+  :group 'ivy)
+
+(defun counsel-find-file-as-root (x)
+  "Find file X with root privileges."
+  (counsel-require-program counsel-root-command)
+  (let* ((host (file-remote-p x 'host))
+         (file-name (format "/%s:%s:%s"
+                            counsel-root-command
+                            (or host "")
+                            (expand-file-name
+                             (if host
+                                 (file-remote-p x 'localname)
+                               x)))))
+    ;; If the current buffer visits the same file we are about to open,
+    ;; replace the current buffer with the new one.
+    (if (eq (current-buffer) (get-file-buffer x))
+        (find-alternate-file file-name)
+      (find-file file-name))))
+
+(defun counsel-find-file-delete (x)
+  "Delete file X."
+  (dired-delete-file x dired-recursive-deletes delete-by-moving-to-trash))
+
+(defun counsel-find-file-move (x)
+  "Move or rename file X."
+  (ivy-read "Rename file to: " 'read-file-name-internal
+            :matcher #'counsel--find-file-matcher
+            :action (lambda (new-name)
+                      (require 'dired-aux)
+                      (dired-rename-file x new-name 1))
+            :keymap counsel-find-file-map
+            :caller 'counsel-find-file-move))
+
+(defun counsel-find-file-mkdir-action (_x)
+  (make-directory (expand-file-name ivy-text ivy--directory)))
+
+(ivy-set-actions
+ 'counsel-find-file
+ '(("j" find-file-other-window "other window")
+   ("f" find-file-other-frame "other frame")
+   ("b" counsel-find-file-cd-bookmark-action "cd bookmark")
+   ("x" counsel-find-file-extern "open externally")
+   ("r" counsel-find-file-as-root "open as root")
+   ("k" counsel-find-file-delete "delete")
+   ("m" counsel-find-file-move "move or rename")
+   ("d" counsel-find-file-mkdir-action "mkdir")))
+
+(defcustom counsel-find-file-at-point nil
+  "When non-nil, add file-at-point to the list of candidates."
+  :type 'boolean
+  :group 'ivy)
+
+(defcustom counsel-preselect-current-file nil
+  "When non-nil, preselect current file in list of candidates."
+  :type 'boolean
+  :group 'ivy)
+
+(defcustom counsel-find-file-ignore-regexp nil
+  "A regexp of files to ignore while in `counsel-find-file'.
+These files are un-ignored if `ivy-text' matches them.  The
+common way to show all files is to start `ivy-text' with a dot.
+
+Example value: \"\\(?:\\`[#.]\\)\\|\\(?:[#~]\\'\\)\".  This will hide
+temporary and lock files.
+\\<ivy-minibuffer-map>
+Choosing the dotfiles option, \"\\`\\.\", might be convenient,
+since you can still access the dotfiles if your input starts with
+a dot. The generic way to toggle ignored files is \\[ivy-toggle-ignore],
+but the leading dot is a lot faster."
+  :group 'ivy
+  :type `(choice
+          (const :tag "None" nil)
+          (const :tag "Dotfiles" "\\`\\.")
+          (const :tag "Ignored Extensions"
+                 ,(regexp-opt completion-ignored-extensions))
+          (regexp :tag "Regex")))
+
+(defun counsel--find-file-matcher (regexp candidates)
+  "Return REGEXP matching CANDIDATES.
+Skip some dotfiles unless `ivy-text' requires them."
+  (let ((res
+         (ivy--re-filter
+          regexp candidates
+          (lambda (re-str)
+            (lambda (x)
+              (string-match re-str (directory-file-name x)))))))
+    (if (or (null ivy-use-ignore)
+            (null counsel-find-file-ignore-regexp)
+            (string-match "\\`\\." ivy-text))
+        res
+      (or (cl-remove-if
+           (lambda (x)
+             (and
+              (string-match counsel-find-file-ignore-regexp x)
+              (not (member x ivy-extra-directories))))
+           res)
+          res))))
+
+(declare-function ffap-guesser "ffap")
+
+(defvar counsel-find-file-speedup-remote t
+  "Speed up opening remote files by disabling `find-file-hook' for them.")
+
+(defun counsel-find-file-action (x)
+  "Find file X."
+  (with-ivy-window
+    (if (and counsel-find-file-speedup-remote
+             (file-remote-p ivy--directory))
+        (let ((find-file-hook nil))
+          (find-file (expand-file-name x ivy--directory)))
+      (find-file (expand-file-name x ivy--directory)))))
+
+(defun counsel--preselect-file ()
+  "Return candidate to preselect during filename completion.
+The preselect behaviour can be customized via user options
+`counsel-find-file-at-point' and
+`counsel-preselect-current-file', which see."
+  (or
+   (when counsel-find-file-at-point
+     (require 'ffap)
+     (let ((f (ffap-guesser)))
+       (when f (expand-file-name f))))
+   (and counsel-preselect-current-file
+        buffer-file-name
+        (file-name-nondirectory buffer-file-name))))
+
+;;;###autoload
+(defun counsel-find-file (&optional initial-input)
+  "Forward to `find-file'.
+When INITIAL-INPUT is non-nil, use it in the minibuffer during completion."
+  (interactive)
+  (ivy-read "Find file: " 'read-file-name-internal
+            :matcher #'counsel--find-file-matcher
+            :initial-input initial-input
+            :action #'counsel-find-file-action
+            :preselect (counsel--preselect-file)
+            :require-match 'confirm-after-completion
+            :history 'file-name-history
+            :keymap counsel-find-file-map
+            :caller 'counsel-find-file))
+
+(ivy-set-occur 'counsel-find-file 'counsel-find-file-occur)
+
+(defvar counsel-find-file-occur-cmd "ls -a | grep -i -E '%s' | xargs -d '\\n' ls -d --group-directories-first"
+  "Format string for `counsel-find-file-occur'.")
+
+(defvar counsel-find-file-occur-use-find nil
+  "When non-nil, `counsel-find-file-occur' will use \"find\" as the base cmd.")
+
+(defun counsel--expand-ls (cmd)
+  "Expand CMD that ends in \"ls\" with switches."
+  (concat cmd " " counsel-dired-listing-switches " | sed -e \"s/^/  /\""))
+
+(defun counsel--occur-cmd-find ()
+  (let* ((regex (counsel-unquote-regex-parens ivy--old-re))
+         (cmd (format
+               "find . -maxdepth 1 | grep -i -E '%s' | xargs -I {} find {} -maxdepth 0 -ls"
+               regex)))
+    (concat
+     (counsel--cmd-to-dired-by-type "d" cmd)
+     " && "
+     (counsel--cmd-to-dired-by-type "f" cmd))))
+
+(defun counsel--cmd-to-dired-by-type (type cmd)
+  (let ((exclude-dots
+         (if (string-match "^\\." ivy-text)
+             ""
+           " | grep -v '/\\\\.'")))
+    (replace-regexp-in-string
+     " | grep"
+     (concat " -type " type exclude-dots " | grep") cmd)))
+
+(defun counsel-find-file-occur ()
+  (require 'find-dired)
+  (cd ivy--directory)
+  (if counsel-find-file-occur-use-find
+      (counsel-cmd-to-dired
+       (counsel--occur-cmd-find)
+       'find-dired-filter)
+    (counsel-cmd-to-dired
+     (counsel--expand-ls
+      (format counsel-find-file-occur-cmd
+              (counsel-unquote-regex-parens ivy--old-re))))))
+
+(defun counsel-up-directory ()
+  "Go to the parent directory preselecting the current one.
+
+If the current directory is remote and it's not possible to go up any
+further, make the remote prefix editable"
+  (interactive)
+  (let* ((cur-dir (directory-file-name (expand-file-name ivy--directory)))
+         (up-dir (file-name-directory cur-dir)))
+    (if (and (file-remote-p cur-dir) (string-equal cur-dir up-dir))
+        (progn
+          ;; make the remote prefix editable
+          (setq ivy--old-cands nil)
+          (setq ivy--old-re nil)
+          (ivy-set-index 0)
+          (setq ivy--directory "")
+          (setq ivy--all-candidates nil)
+          (setq ivy-text "")
+          (delete-minibuffer-contents)
+          (insert up-dir))
+      (ivy--cd up-dir)
+      (setf (ivy-state-preselect ivy-last)
+            (file-name-as-directory (file-name-nondirectory cur-dir))))))
+
+(defun counsel-at-git-issue-p ()
+  "When point is at an issue in a Git-versioned file, return the issue string."
+  (and (looking-at "#[0-9]+")
+       (or (eq (vc-backend buffer-file-name) 'Git)
+           (eq major-mode 'magit-commit-mode)
+           (bound-and-true-p magit-commit-mode))
+       (match-string-no-properties 0)))
+
+(defun counsel-github-url-p ()
+  "Return a Github issue URL at point."
+  (counsel-require-program "git")
+  (let ((url (counsel-at-git-issue-p)))
+    (when url
+      (let ((origin (shell-command-to-string
+                     "git remote get-url origin"))
+            user repo)
+        (cond ((string-match "\\`git@github.com:\\([^/]+\\)/\\(.*\\)\\.git$"
+                             origin)
+               (setq user (match-string 1 origin))
+               (setq repo (match-string 2 origin)))
+              ((string-match "\\`https://github.com/\\([^/]+\\)/\\(.*\\)$"
+                             origin)
+               (setq user (match-string 1 origin))
+               (setq repo (match-string 2 origin))))
+        (when user
+          (setq url (format "https://github.com/%s/%s/issues/%s"
+                            user repo (substring url 1))))))))
+
+(defun counsel-emacs-url-p ()
+  "Return a Debbugs issue URL at point."
+  (counsel-require-program "git")
+  (let ((url (counsel-at-git-issue-p)))
+    (when url
+      (let ((origin (shell-command-to-string
+                     "git remote get-url origin")))
+        (when (string-match "git.sv.gnu.org:/srv/git/emacs.git" origin)
+          (format "http://debbugs.gnu.org/cgi/bugreport.cgi?bug=%s"
+                  (substring url 1)))))))
+
+(defvar counsel-url-expansions-alist nil
+  "Map of regular expressions to expansions.
+
+This variable should take the form of a list of (REGEXP . FORMAT)
+pairs.
+
+`counsel-url-expand' will expand the word at point according to
+FORMAT for the first matching REGEXP.  FORMAT can be either a
+string or a function.  If it is a string, it will be used as the
+format string for the `format' function, with the word at point
+as the next argument.  If it is a function, it will be called
+with the word at point as the sole argument.
+
+For example, a pair of the form:
+  '(\"\\`BSERV-[[:digit:]]+\\'\" . \"https://jira.atlassian.com/browse/%s\")
+will expand to URL `https://jira.atlassian.com/browse/BSERV-100'
+when the word at point is BSERV-100.
+
+If the format element is a function, more powerful
+transformations are possible.  As an example,
+  '(\"\\`issue\\([[:digit:]]+\\)\\'\" .
+    (lambda (word)
+      (concat \"http://debbugs.gnu.org/cgi/bugreport.cgi?bug=\"
+              (match-string 1 word))))
+trims the \"issue\" prefix from the word at point before creating the URL.")
+
+(defun counsel-url-expand ()
+  "Expand word at point using `counsel-url-expansions-alist'.
+The first pair in the list whose regexp matches the word at point
+will be expanded according to its format.  This function is
+intended to be used in `ivy-ffap-url-functions' to browse the
+result as a URL."
+  (let ((word-at-point (current-word)))
+    (cl-some
+     (lambda (pair)
+       (let ((regexp (car pair))
+             (formatter (cdr pair)))
+         (when (string-match regexp word-at-point)
+           (if (functionp formatter)
+               (funcall formatter word-at-point)
+             (format formatter word-at-point)))))
+     counsel-url-expansions-alist)))
+
+;;** `counsel-recentf'
+(defvar recentf-list)
+(declare-function recentf-mode "recentf")
+
+;;;###autoload
+(defun counsel-recentf ()
+  "Find a file on `recentf-list'."
+  (interactive)
+  (require 'recentf)
+  (recentf-mode)
+  (ivy-read "Recentf: " (mapcar #'substring-no-properties recentf-list)
+            :action (lambda (f)
+                      (with-ivy-window
+                        (find-file f)))
+            :caller 'counsel-recentf))
+(ivy-set-actions
+ 'counsel-recentf
+ '(("j" find-file-other-window "other window")
+   ("f" find-file-other-frame "other frame")
+   ("x" counsel-find-file-extern "open externally")))
+
+;;** `counsel-bookmark'
+(defcustom counsel-bookmark-avoid-dired nil
+  "If non-nil, open directory bookmarks with `counsel-find-file'.
+By default `counsel-bookmark' opens a dired buffer for directories."
+  :type 'boolean
+  :group 'ivy)
+
+(declare-function bookmark-all-names "bookmark")
+(declare-function bookmark-location "bookmark")
+
+;;;###autoload
+(defun counsel-bookmark ()
+  "Forward to `bookmark-jump' or `bookmark-set' if bookmark doesn't exist."
+  (interactive)
+  (require 'bookmark)
+  (ivy-read "Create or jump to bookmark: "
+            (bookmark-all-names)
+            :action (lambda (x)
+                      (cond ((and counsel-bookmark-avoid-dired
+                                  (member x (bookmark-all-names))
+                                  (file-directory-p (bookmark-location x)))
+                             (with-ivy-window
+                               (let ((default-directory (bookmark-location x)))
+                                 (counsel-find-file))))
+                            ((member x (bookmark-all-names))
+                             (with-ivy-window
+                               (bookmark-jump x)))
+                            (t
+                             (bookmark-set x))))
+            :caller 'counsel-bookmark))
+
+(defun counsel--apply-bookmark-fn (fn)
+  "Return a function applyinig FN to a bookmark's location."
+  (lambda (bookmark)
+    (funcall fn (bookmark-location bookmark))))
+
+(ivy-set-actions
+ 'counsel-bookmark
+ `(("d" bookmark-delete "delete")
+   ("e" bookmark-rename "edit")
+   ("x" ,(counsel--apply-bookmark-fn #'counsel-find-file-extern)
+        "open externally")
+   ("r" ,(counsel--apply-bookmark-fn #'counsel-find-file-as-root)
+        "open as root")))
+
+;;** `counsel-file-register'
+;;;###autoload
+(defun counsel-file-register ()
+  "Search file in register.
+
+You cannot use Emacs' normal register commands to create file
+registers.  Instead you must use the `set-register' function like
+so: `(set-register ?i \"/home/eric/.emacs.d/init.el\")'.  Now you
+can use `C-x r j i' to open that file."
+  (interactive)
+  (ivy-read "File Register: "
+            ;; Use the `register-alist' variable to filter out file
+            ;; registers.  Each entry for a file registar will have the
+            ;; following layout:
+            ;;
+            ;;     (NUMBER 'file . "string/path/to/file")
+            ;;
+            ;; So we go through each entry and see if the `cadr' is
+            ;; `eq' to the symbol `file'.  If so then add the filename
+            ;; (`cddr') which `ivy-read' will use for its choices.
+            (mapcar (lambda (register-alist-entry)
+                      (if (eq 'file (cadr register-alist-entry))
+                          (cddr register-alist-entry)))
+                    register-alist)
+            :sort t
+            :require-match t
+            :history 'counsel-file-register
+            :caller 'counsel-file-register
+            :action (lambda (register-file)
+                      (with-ivy-window (find-file register-file)))))
+
+(ivy-set-actions
+ 'counsel-file-register
+ '(("j" find-file-other-window "other window")))
+
+;;** `counsel-locate'
+(defcustom counsel-locate-cmd (cond ((eq system-type 'darwin)
+                                     'counsel-locate-cmd-noregex)
+                                    ((and (eq system-type 'windows-nt)
+                                          (executable-find "es.exe"))
+                                     'counsel-locate-cmd-es)
+                                    (t
+                                     'counsel-locate-cmd-default))
+  "The function for producing a locate command string from the input.
+
+The function takes a string - the current input, and returns a
+string - the full shell command to run."
+  :group 'ivy
+  :type '(choice
+          (const :tag "Default" counsel-locate-cmd-default)
+          (const :tag "No regex" counsel-locate-cmd-noregex)
+          (const :tag "mdfind" counsel-locate-cmd-mdfind)
+          (const :tag "everything" counsel-locate-cmd-es)))
+
+(ivy-set-actions
+ 'counsel-locate
+ '(("x" counsel-locate-action-extern "xdg-open")
+   ("d" counsel-locate-action-dired "dired")))
+
+(counsel-set-async-exit-code 'counsel-locate 1 "Nothing found")
+
+(defvar counsel-locate-history nil
+  "History for `counsel-locate'.")
+
+(defun counsel-locate-action-extern (x)
+  "Pass X to `xdg-open' or equivalent command via the shell."
+  (interactive "FFile: ")
+  (if (and (eq system-type 'windows-nt)
+           (fboundp 'w32-shell-execute))
+      (w32-shell-execute "open" x)
+    (start-process-shell-command shell-file-name nil
+                                 (format "%s %s"
+                                         (cl-case system-type
+                                           (darwin "open")
+                                           (cygwin "cygstart")
+                                           (t "xdg-open"))
+                                         (shell-quote-argument x)))))
+
+(defalias 'counsel-find-file-extern 'counsel-locate-action-extern)
+
+(declare-function dired-jump "dired-x")
+
+(defun counsel-locate-action-dired (x)
+  "Use `dired-jump' on X."
+  (dired-jump nil x))
+
+(defun counsel-locate-cmd-default (input)
+  "Return a shell command based on INPUT."
+  (counsel-require-program "locate")
+  (format "locate -i --regex '%s'"
+          (counsel-unquote-regex-parens
+           (ivy--regex input))))
+
+(defun counsel-locate-cmd-noregex (input)
+  "Return a shell command based on INPUT."
+  (counsel-require-program "locate")
+  (format "locate -i '%s'" input))
+
+(defun counsel-locate-cmd-mdfind (input)
+  "Return a shell command based on INPUT."
+  (counsel-require-program "mdfind")
+  (format "mdfind -name '%s'" input))
+
+(defun counsel-locate-cmd-es (input)
+  "Return a shell command based on INPUT."
+  (counsel-require-program "es.exe")
+  (format "es.exe -i -r -p %s"
+          (counsel-unquote-regex-parens
+           (ivy--regex input t))))
+
+(defun counsel-locate-function (input)
+  "Call the \"locate\" shell command with INPUT."
+  (or
+   (counsel-more-chars)
+   (progn
+     (counsel--async-command
+      (funcall counsel-locate-cmd input))
+     '("" "working..."))))
+
+;;;###autoload
+(defun counsel-locate (&optional initial-input)
+  "Call the \"locate\" shell command.
+INITIAL-INPUT can be given as the initial minibuffer input."
+  (interactive)
+  (ivy-read "Locate: " #'counsel-locate-function
+            :initial-input initial-input
+            :dynamic-collection t
+            :history 'counsel-locate-history
+            :action (lambda (file)
+                      (when file
+                        (with-ivy-window
+                          (find-file file))))
+            :unwind #'counsel-delete-process
+            :caller 'counsel-locate))
+
+;;** `counsel-fzf'
+(defvar counsel-fzf-cmd "fzf -f \"%s\""
+  "Command for `counsel-fzf'.")
+
+(defvar counsel--fzf-dir nil
+  "Store the base fzf directory.")
+
+(defvar counsel-fzf-dir-function 'counsel-fzf-dir-function-projectile
+  "Function that returns a directory for fzf to use.")
+
+(defun counsel-fzf-dir-function-projectile ()
+  (if (and
+       (fboundp 'projectile-project-p)
+       (fboundp 'projectile-project-root)
+       (projectile-project-p))
+      (projectile-project-root)
+    default-directory))
+
+(defun counsel-fzf-function (str)
+  (let ((default-directory counsel--fzf-dir))
+    (counsel--async-command
+     (format counsel-fzf-cmd
+             (if (string-equal str "")
+                 "\"\""
+               (setq ivy--old-re (ivy--regex-fuzzy str))
+               str))))
+  nil)
+
+;;;###autoload
+(defun counsel-fzf (&optional initial-input initial-directory fzf-prompt)
+  "Open a file using the fzf shell command.
+INITIAL-INPUT can be given as the initial minibuffer input.
+INITIAL-DIRECTORY, if non-nil, is used as the root directory for search.
+FZF-PROMPT, if non-nil, is passed as `ivy-read' prompt argument."
+  (interactive
+   (let ((fzf-basename (car (split-string counsel-fzf-cmd))))
+     (list nil
+           (when current-prefix-arg
+             (read-directory-name (concat
+                                   fzf-basename
+                                   " in directory: "))))))
+
+  (let ((fzf-basename (car (split-string counsel-fzf-cmd))))
+    (counsel-require-program fzf-basename)
+    (setq counsel--fzf-dir
+          (or initial-directory
+              (funcall counsel-fzf-dir-function)))
+    (ivy-set-prompt 'counsel-fzf counsel-prompt-function)
+    (ivy-read (or fzf-prompt (concat fzf-basename ": "))
+              #'counsel-fzf-function
+              :initial-input initial-input
+              :re-builder #'ivy--regex-fuzzy
+              :dynamic-collection t
+              :action #'counsel-fzf-action
+              :unwind #'counsel-delete-process
+              :caller 'counsel-fzf)))
+
+(defun counsel-fzf-action (x)
+  "Find file X in current fzf directory."
+  (with-ivy-window
+    (let ((default-directory counsel--fzf-dir))
+      (find-file x))))
+
+(defun counsel-fzf-occur ()
+  "Occur function for `counsel-fzf' using `counsel-cmd-to-dired'."
+  (cd counsel--fzf-dir)
+  (counsel-cmd-to-dired
+   (counsel--expand-ls
+    (format
+     "%s --print0 | xargs -0 ls"
+     (format counsel-fzf-cmd ivy-text)))))
+
+(ivy-set-occur 'counsel-fzf 'counsel-fzf-occur)
+
+(ivy-set-actions
+ 'counsel-fzf
+ '(("x" counsel-locate-action-extern "xdg-open")
+   ("d" counsel-locate-action-dired "dired")))
+
+(counsel-set-async-exit-code 'counsel-fzf 1 "Nothing found")
+
+;;** `counsel-dpkg'
+;;;###autoload
+(defun counsel-dpkg ()
+  "Call the \"dpkg\" shell command."
+  (interactive)
+  (counsel-require-program "dpkg")
+  (let ((cands (mapcar
+                (lambda (x)
+                  (let ((y (split-string x "  +")))
+                    (cons (format "%-40s   %s"
+                                  (ivy--truncate-string
+                                   (nth 1 y) 40)
+                                  (nth 4 y))
+                          (mapconcat #'identity y " "))))
+                (split-string
+                 (shell-command-to-string "dpkg -l | tail -n+6") "\n" t))))
+    (ivy-read "dpkg: " cands
+              :action (lambda (x)
+                        (message (cdr x)))
+              :caller 'counsel-dpkg)))
+
+;;** `counsel-rpm'
+;;;###autoload
+(defun counsel-rpm ()
+  "Call the \"rpm\" shell command."
+  (interactive)
+  (counsel-require-program "rpm")
+  (let ((cands (mapcar
+                (lambda (x)
+                  (let ((y (split-string x "|")))
+                    (cons (format "%-40s   %s"
+                                  (ivy--truncate-string
+                                   (nth 0 y) 40)
+                                  (nth 1 y))
+                          (mapconcat #'identity y " "))))
+                (split-string
+                 (shell-command-to-string "rpm -qa --qf \"%{NAME}|%{SUMMARY}\\n\"") "\n" t))))
+    (ivy-read "rpm: " cands
+              :action (lambda (x)
+                        (message (cdr x)))
+              :caller 'counsel-rpm)))
+
+;;** `counsel-file-jump'
+;;;###autoload
+(defun counsel-file-jump (&optional initial-input initial-directory)
+  "Jump to a file below the current directory.
+List all files within the current directory or any of its subdirectories.
+INITIAL-INPUT can be given as the initial minibuffer input.
+INITIAL-DIRECTORY, if non-nil, is used as the root directory for search."
+  (interactive
+   (list nil
+         (when current-prefix-arg
+           (read-directory-name "From directory: "))))
+  (counsel-require-program "find")
+  (let* ((default-directory (or initial-directory default-directory)))
+    (ivy-read "Find file: "
+              (split-string
+               (shell-command-to-string
+                (concat find-program " * -type f -not -path '*\/.git*'"))
+               "\n" t)
+              :matcher #'counsel--find-file-matcher
+              :initial-input initial-input
+              :action (lambda (x)
+                        (with-ivy-window
+                          (find-file (expand-file-name x ivy--directory))))
+              :preselect (counsel--preselect-file)
+              :require-match 'confirm-after-completion
+              :history 'file-name-history
+              :keymap counsel-find-file-map
+              :caller 'counsel-file-jump)))
+
+;;** `counsel-dired-jump'
+;;;###autoload
+(defun counsel-dired-jump (&optional initial-input initial-directory)
+  "Jump to a directory (in dired) below the current directory.
+List all subdirectories within the current directory.
+INITIAL-INPUT can be given as the initial minibuffer input.
+INITIAL-DIRECTORY, if non-nil, is used as the root directory for search."
+  (interactive
+   (list nil
+         (when current-prefix-arg
+           (read-directory-name "From directory: "))))
+  (counsel-require-program "find")
+  (let* ((default-directory (or initial-directory default-directory)))
+    (ivy-read "Directory: "
+              (split-string
+               (shell-command-to-string
+                (concat find-program " * -type d -not -path '*\/.git*'"))
+               "\n" t)
+              :initial-input initial-input
+              :action (lambda (d) (dired-jump nil (expand-file-name d)))
+              :caller 'counsel-dired-jump)))
+
+;;* Grep
+(defun counsel--grep-mode-occur (git-grep-dir-is-file)
+  "Generate a custom occur buffer for grep like commands.
+If GIT-GREP-DIR-IS-FILE is t, then `ivy-state-directory' is treated as a full
+path to a file rather than a directory (e.g. for `counsel-grep-occur').
+
+This function expects that the candidates have already been filtered.
+It applies no filtering to ivy--all-candidates."
+  (unless (eq major-mode 'ivy-occur-grep-mode)
+    (ivy-occur-grep-mode))
+  (let* ((directory
+          (if git-grep-dir-is-file
+              (file-name-directory (ivy-state-directory ivy-last))
+            (ivy-state-directory ivy-last)))
+         (prepend
+          (if git-grep-dir-is-file
+              (concat (file-name-nondirectory
+                       (ivy-state-directory ivy-last)) ":")
+            "")))
+    (setq default-directory directory)
+    ;; Need precise number of header lines for `wgrep' to work.
+    (insert (format "-*- mode:grep; default-directory: %S -*-\n\n\n" default-directory))
+    (insert (format "%d candidates:\n" (length ivy--all-candidates)))
+    (ivy--occur-insert-lines
+     (mapcar (lambda (cand) (concat "./" prepend cand)) ivy--all-candidates))))
+
+;;** `counsel-ag'
+(defvar counsel-ag-map
+  (let ((map (make-sparse-keymap)))
+    (define-key map (kbd "C-l") 'ivy-call-and-recenter)
+    (define-key map (kbd "M-q") 'counsel-git-grep-query-replace)
+    map))
+
+(defcustom counsel-ag-base-command
+  (if (memq system-type '(ms-dos windows-nt))
+      "ag --vimgrep %s"
+    "ag --nocolor --nogroup %s")
+  "Format string to use in `counsel-ag-function' to construct the command.
+The %s will be replaced by optional extra ag arguments followed by the
+regex string."
+  :type 'string
+  :group 'ivy)
+
+(defvar counsel-ag-command nil)
+
+(counsel-set-async-exit-code 'counsel-ag 1 "No matches found")
+(ivy-set-occur 'counsel-ag 'counsel-ag-occur)
+(ivy-set-display-transformer 'counsel-ag 'counsel-git-grep-transformer)
+
+(defun counsel-ag-function (str)
+  "Grep in the current directory for STRING using BASE-CMD.
+If non-nil, append EXTRA-AG-ARGS to BASE-CMD."
+  (or
+   (counsel-more-chars)
+   (let ((default-directory (ivy-state-directory ivy-last))
+         (regex (counsel-unquote-regex-parens
+                 (setq ivy--old-re
+                       (ivy--regex str)))))
+     (counsel--async-command (format counsel-ag-command
+                                     (shell-quote-argument regex)))
+     nil)))
+
+;;;###autoload
+(defun counsel-ag (&optional initial-input initial-directory extra-ag-args ag-prompt)
+  "Grep for a string in the current directory using ag.
+INITIAL-INPUT can be given as the initial minibuffer input.
+INITIAL-DIRECTORY, if non-nil, is used as the root directory for search.
+EXTRA-AG-ARGS string, if non-nil, is appended to `counsel-ag-base-command'.
+AG-PROMPT, if non-nil, is passed as `ivy-read' prompt argument."
+  (interactive)
+  (setq counsel-ag-command counsel-ag-base-command)
+  (counsel-require-program (car (split-string counsel-ag-command)))
+  (when current-prefix-arg
+    (setq initial-directory
+          (or initial-directory
+              (read-directory-name (concat
+                                    (car (split-string counsel-ag-command))
+                                    " in directory: "))))
+    (setq extra-ag-args
+          (or extra-ag-args
+              (read-from-minibuffer (format
+                                     "%s args: "
+                                     (car (split-string counsel-ag-command)))))))
+  (when (null extra-ag-args)
+    (setq extra-ag-args ""))
+  (let* ((args-end (string-match "-- " extra-ag-args))
+         (file (if args-end
+                   (substring-no-properties extra-ag-args (match-end 0))
+                 ""))
+         (extra-ag-args (if args-end
+                            (substring-no-properties extra-ag-args 0 args-end)
+                          extra-ag-args)))
+    (setq counsel-ag-command (format counsel-ag-command
+                                     (concat extra-ag-args
+                                             " -- %s "
+                                             file))))
+  (ivy-set-prompt 'counsel-ag counsel-prompt-function)
+  (let ((default-directory (or initial-directory
+                               (locate-dominating-file default-directory ".git")
+                               default-directory)))
+    (ivy-read (or ag-prompt (car (split-string counsel-ag-command)))
+              #'counsel-ag-function
+              :initial-input initial-input
+              :dynamic-collection t
+              :keymap counsel-ag-map
+              :history 'counsel-git-grep-history
+              :action #'counsel-git-grep-action
+              :unwind (lambda ()
+                        (counsel-delete-process)
+                        (swiper--cleanup))
+              :caller 'counsel-ag)))
+(cl-pushnew 'counsel-ag ivy-highlight-grep-commands)
+
+(defun counsel-grep-like-occur (cmd-template)
+  (unless (eq major-mode 'ivy-occur-grep-mode)
+    (ivy-occur-grep-mode)
+    (setq default-directory (ivy-state-directory ivy-last)))
+  (setq ivy-text
+        (and (string-match "\"\\(.*\\)\"" (buffer-name))
+             (match-string 1 (buffer-name))))
+  (let* ((cmd (format cmd-template
+                      (shell-quote-argument
+                       (counsel-unquote-regex-parens
+                        (ivy--regex ivy-text)))))
+         (cands (split-string (shell-command-to-string cmd) "\n" t)))
+    ;; Need precise number of header lines for `wgrep' to work.
+    (insert (format "-*- mode:grep; default-directory: %S -*-\n\n\n"
+                    default-directory))
+    (insert (format "%d candidates:\n" (length cands)))
+    (ivy--occur-insert-lines
+     (mapcar
+      (lambda (cand) (concat "./" cand))
+      cands))))
+
+(defun counsel-ag-occur ()
+  "Generate a custom occur buffer for `counsel-ag'."
+  (counsel-grep-like-occur
+   counsel-ag-command))
+
+;;** `counsel-pt'
+(defcustom counsel-pt-base-command "pt --nocolor --nogroup -e %s"
+  "Alternative to `counsel-ag-base-command' using pt."
+  :type 'string
+  :group 'ivy)
+
+;;;###autoload
+(defun counsel-pt (&optional initial-input)
+  "Grep for a string in the current directory using pt.
+INITIAL-INPUT can be given as the initial minibuffer input.
+This uses `counsel-ag' with `counsel-pt-base-command' instead of
+`counsel-ag-base-command'."
+  (interactive)
+  (let ((counsel-ag-base-command counsel-pt-base-command))
+    (counsel-ag initial-input)))
+(cl-pushnew 'counsel-pt ivy-highlight-grep-commands)
+
+;;** `counsel-ack'
+(defcustom counsel-ack-base-command
+  (concat
+   (file-name-nondirectory
+    (or (executable-find "ack-grep") "ack"))
+   " --nocolor --nogroup %s")
+  "Alternative to `counsel-ag-base-command' using ack."
+  :type 'string
+  :group 'ivy)
+
+;;;###autoload
+(defun counsel-ack (&optional initial-input)
+  "Grep for a string in the current directory using ack.
+INITIAL-INPUT can be given as the initial minibuffer input.
+This uses `counsel-ag' with `counsel-ack-base-command' replacing
+`counsel-ag-base-command'."
+  (interactive)
+  (let ((counsel-ag-base-command counsel-ack-base-command))
+    (counsel-ag initial-input)))
+
+
+;;** `counsel-rg'
+(defcustom counsel-rg-base-command "rg -S --no-heading --line-number --color never %s ."
+  "Alternative to `counsel-ag-base-command' using ripgrep.
+
+Note: don't use single quotes for the regex."
+  :type 'string
+  :group 'ivy)
+
+(counsel-set-async-exit-code 'counsel-rg 1 "No matches found")
+(ivy-set-occur 'counsel-rg 'counsel-ag-occur)
+(ivy-set-display-transformer 'counsel-rg 'counsel-git-grep-transformer)
+
+;;;###autoload
+(defun counsel-rg (&optional initial-input initial-directory extra-rg-args rg-prompt)
+  "Grep for a string in the current directory using rg.
+INITIAL-INPUT can be given as the initial minibuffer input.
+INITIAL-DIRECTORY, if non-nil, is used as the root directory for search.
+EXTRA-RG-ARGS string, if non-nil, is appended to `counsel-rg-base-command'.
+RG-PROMPT, if non-nil, is passed as `ivy-read' prompt argument."
+  (interactive)
+  (let ((counsel-ag-base-command counsel-rg-base-command))
+    (counsel-ag initial-input initial-directory extra-rg-args rg-prompt)))
+(cl-pushnew 'counsel-rg ivy-highlight-grep-commands)
+
+;;** `counsel-grep'
+(defcustom counsel-grep-base-command "grep -E -n -e %s %s"
+  "Format string used by `counsel-grep' to build a shell command.
+It should contain two %-sequences (see function `format') to be
+substituted by the search regexp and file, respectively.  Neither
+%-sequence should be contained in single quotes."
+  :type 'string
+  :group 'ivy)
+
+(defvar counsel-grep-command nil)
+
+(defun counsel-grep-function (string)
+  "Grep in the current directory for STRING."
+  (or
+   (counsel-more-chars)
+   (let ((regex (counsel-unquote-regex-parens
+                 (setq ivy--old-re
+                       (ivy--regex string)))))
+     (counsel--async-command
+      (format counsel-grep-command (shell-quote-argument regex)))
+     nil)))
+
+(defun counsel-grep-action (x)
+  "Go to candidate X."
+  (with-ivy-window
+    (swiper--cleanup)
+    (let ((default-directory
+           (file-name-directory
+            (ivy-state-directory ivy-last)))
+          file-name line-number)
+      (when (cond ((string-match "\\`\\([0-9]+\\):\\(.*\\)\\'" x)
+                   (setq file-name (buffer-file-name (ivy-state-buffer ivy-last)))
+                   (setq line-number (match-string-no-properties 1 x)))
+                  ((string-match "\\`\\([^:]+\\):\\([0-9]+\\):\\(.*\\)\\'" x)
+                   (setq file-name (match-string-no-properties 1 x))
+                   (setq line-number (match-string-no-properties 2 x))))
+        ;; If the file buffer is already open, just get it. Prevent doing
+        ;; `find-file', as that file could have already been opened using
+        ;; `find-file-literally'.
+        (with-current-buffer (or (get-file-buffer file-name)
+                                 (find-file file-name))
+          (setq line-number (string-to-number line-number))
+          (if counsel-grep-last-line
+              (forward-line (- line-number counsel-grep-last-line))
+            (goto-char (point-min))
+            (forward-line (1- line-number)))
+          (setq counsel-grep-last-line line-number)
+          (re-search-forward (ivy--regex ivy-text t) (line-end-position) t)
+          (run-hooks 'counsel-grep-post-action-hook)
+          (if (eq ivy-exit 'done)
+              (swiper--ensure-visible)
+            (isearch-range-invisible (line-beginning-position)
+                                     (line-end-position))
+            (swiper--add-overlays (ivy--regex ivy-text))))))))
+
+(defun counsel-grep-occur ()
+  "Generate a custom occur buffer for `counsel-grep'."
+  (counsel-grep-like-occur
+   (format
+    "grep -niE %%s %s /dev/null"
+    (shell-quote-argument
+     (file-name-nondirectory
+      (buffer-file-name
+       (ivy-state-buffer ivy-last)))))))
+
+(ivy-set-occur 'counsel-grep 'counsel-grep-occur)
+(counsel-set-async-exit-code 'counsel-grep 1 "")
+
+;;;###autoload
+(defun counsel-grep (&optional initial-input)
+  "Grep for a string in the file visited by the current buffer.
+When non-nil, INITIAL-INPUT is the initial search pattern."
+  (interactive)
+  (unless buffer-file-name
+    (user-error "Current buffer is not visiting a file"))
+  (counsel-require-program (car (split-string counsel-grep-base-command)))
+  (setq counsel-grep-last-line nil)
+  (setq counsel-grep-command
+        (format counsel-grep-base-command
+                "%s" (shell-quote-argument buffer-file-name)))
+  (let ((init-point (point))
+        res)
+    (unwind-protect
+         (setq res (ivy-read "grep: " 'counsel-grep-function
+                             :initial-input initial-input
+                             :dynamic-collection t
+                             :preselect
+                             (when (< (- (line-end-position) (line-beginning-position)) 300)
+                               (format "%d:%s"
+                                       (line-number-at-pos)
+                                       (regexp-quote
+                                        (buffer-substring-no-properties
+                                         (line-beginning-position)
+                                         (line-end-position)))))
+
+                             :history 'counsel-git-grep-history
+                             :update-fn (lambda ()
+                                          (counsel-grep-action (ivy-state-current ivy-last)))
+                             :re-builder #'ivy--regex
+                             :action #'counsel-grep-action
+                             :unwind (lambda ()
+                                       (counsel-delete-process)
+                                       (swiper--cleanup))
+                             :caller 'counsel-grep))
+      (unless res
+        (goto-char init-point)))))
+
+;;** `counsel-grep-or-swiper'
+(defcustom counsel-grep-swiper-limit 300000
+  "Buffer size threshold for `counsel-grep-or-swiper'.
+When the number of characters in a buffer exceeds this threshold,
+`counsel-grep' will be used instead of `swiper'."
+  :type 'integer
+  :group 'ivy)
+
+;;;###autoload
+(defun counsel-grep-or-swiper (&optional initial-input)
+  "Call `swiper' for small buffers and `counsel-grep' for large ones.
+When non-nil, INITIAL-INPUT is the initial search pattern."
+  (interactive)
+  (if (or (not buffer-file-name)
+          (buffer-narrowed-p)
+          (ignore-errors
+            (file-remote-p buffer-file-name))
+          (jka-compr-get-compression-info buffer-file-name)
+          (<= (buffer-size)
+              (/ counsel-grep-swiper-limit
+                 (if (eq major-mode 'org-mode) 4 1))))
+      (swiper initial-input)
+    (when (file-writable-p buffer-file-name)
+      (save-buffer))
+    (counsel-grep initial-input)))
+
+;;** `counsel-recoll'
+(defun counsel-recoll-function (str)
+  "Run recoll for STR."
+  (or
+   (counsel-more-chars)
+   (progn
+     (counsel--async-command
+      (format "recoll -t -b %s"
+              (shell-quote-argument str)))
+     nil)))
+
+;; This command uses the recollq command line tool that comes together
+;; with the recoll (the document indexing database) source:
+;;     http://www.lesbonscomptes.com/recoll/download.html
+;; You need to build it yourself (together with recoll):
+;;     cd ./query && make && sudo cp recollq /usr/local/bin
+;; You can try the GUI version of recoll with:
+;;     sudo apt-get install recoll
+;; Unfortunately, that does not install recollq.
+(defun counsel-recoll (&optional initial-input)
+  "Search for a string in the recoll database.
+You'll be given a list of files that match.
+Selecting a file will launch `swiper' for that file.
+INITIAL-INPUT can be given as the initial minibuffer input."
+  (interactive)
+  (counsel-require-program "recoll")
+  (ivy-read "recoll: " 'counsel-recoll-function
+            :initial-input initial-input
+            :dynamic-collection t
+            :history 'counsel-git-grep-history
+            :action (lambda (x)
+                      (when (string-match "file://\\(.*\\)\\'" x)
+                        (let ((file-name (match-string 1 x)))
+                          (find-file file-name)
+                          (unless (string-match "pdf$" x)
+                            (swiper ivy-text)))))
+            :unwind #'counsel-delete-process
+            :caller 'counsel-recoll))
+
+;;* Org
+;;** `counsel-org-tag'
+(defvar counsel-org-tags nil
+  "Store the current list of tags.")
+
+(defvar org-outline-regexp)
+(defvar org-indent-mode)
+(defvar org-indent-indentation-per-level)
+(defvar org-tags-column)
+(declare-function org-get-tags-string "org")
+(declare-function org-move-to-column "org-compat")
+
+(defun counsel-org-change-tags (tags)
+  "Change tags of current org headline to TAGS."
+  (let ((current (org-get-tags-string))
+        (col (current-column))
+        level)
+    ;; Insert new tags at the correct column
+    (beginning-of-line 1)
+    (setq level (or (and (looking-at org-outline-regexp)
+                         (- (match-end 0) (point) 1))
+                    1))
+    (cond
+      ((and (equal current "") (equal tags "")))
+      ((re-search-forward
+        (concat "\\([ \t]*" (regexp-quote current) "\\)[ \t]*$")
+        (line-end-position) t)
+       (if (equal tags "")
+           (delete-region
+            (match-beginning 0)
+            (match-end 0))
+         (goto-char (match-beginning 0))
+         (let* ((c0 (current-column))
+                ;; compute offset for the case of org-indent-mode active
+                (di (if (bound-and-true-p org-indent-mode)
+                        (* (1- org-indent-indentation-per-level) (1- level))
+                      0))
+                (p0 (if (equal (char-before) ?*) (1+ (point)) (point)))
+                (tc (+ org-tags-column (if (> org-tags-column 0) (- di) di)))
+                (c1 (max (1+ c0) (if (> tc 0) tc (- (- tc) (string-width tags)))))
+                (rpl (concat (make-string (max 0 (- c1 c0)) ?\ ) tags)))
+           (replace-match rpl t t)
+           (and c0 indent-tabs-mode (tabify p0 (point)))
+           tags)))
+      (t (error "Tags alignment failed")))
+    (org-move-to-column col)))
+
+(defun counsel-org--set-tags ()
+  "Set tags of current org headline to `counsel-org-tags'."
+  (counsel-org-change-tags
+   (if counsel-org-tags
+       (format ":%s:"
+               (mapconcat #'identity counsel-org-tags ":"))
+     "")))
+
+(defvar org-agenda-bulk-marked-entries)
+
+(declare-function org-get-at-bol "org")
+(declare-function org-agenda-error "org-agenda")
+
+(defun counsel-org-tag-action (x)
+  "Add tag X to `counsel-org-tags'.
+If X is already part of the list, remove it instead.  Quit the selection if
+X is selected by either `ivy-done', `ivy-alt-done' or `ivy-immediate-done',
+otherwise continue prompting for tags."
+  (if (member x counsel-org-tags)
+      (progn
+        (setq counsel-org-tags (delete x counsel-org-tags)))
+    (unless (equal x "")
+      (setq counsel-org-tags (append counsel-org-tags (list x)))
+      (unless (member x ivy--all-candidates)
+        (setq ivy--all-candidates (append ivy--all-candidates (list x))))))
+  (let ((prompt (counsel-org-tag-prompt)))
+    (setf (ivy-state-prompt ivy-last) prompt)
+    (setq ivy--prompt (concat "%-4d " prompt)))
+  (cond ((memq this-command '(ivy-done
+                              ivy-alt-done
+                              ivy-immediate-done))
+         (if (eq major-mode 'org-agenda-mode)
+             (if (null org-agenda-bulk-marked-entries)
+                 (let ((hdmarker (or (org-get-at-bol 'org-hd-marker)
+                                     (org-agenda-error))))
+                   (with-current-buffer (marker-buffer hdmarker)
+                     (goto-char hdmarker)
+                     (counsel-org--set-tags)))
+               (let ((add-tags (copy-sequence counsel-org-tags)))
+                 (dolist (m org-agenda-bulk-marked-entries)
+                   (with-current-buffer (marker-buffer m)
+                     (save-excursion
+                       (goto-char m)
+                       (setq counsel-org-tags
+                             (delete-dups
+                              (append (split-string (org-get-tags-string) ":" t)
+                                      add-tags)))
+                       (counsel-org--set-tags))))))
+           (counsel-org--set-tags)))
+        ((eq this-command 'ivy-call)
+         (with-selected-window (active-minibuffer-window)
+           (delete-minibuffer-contents)))))
+
+(defun counsel-org-tag-prompt ()
+  "Return prompt for `counsel-org-tag'."
+  (format "Tags (%s): "
+          (mapconcat #'identity counsel-org-tags ", ")))
+
+(defvar org-setting-tags)
+(defvar org-last-tags-completion-table)
+(defvar org-tag-persistent-alist)
+(defvar org-tag-alist)
+(defvar org-complete-tags-always-offer-all-agenda-tags)
+
+(declare-function org-at-heading-p "org")
+(declare-function org-back-to-heading "org")
+(declare-function org-get-buffer-tags "org")
+(declare-function org-global-tags-completion-table "org")
+(declare-function org-agenda-files "org")
+(declare-function org-agenda-set-tags "org-agenda")
+(declare-function org-tags-completion-function "org")
+
+;;;###autoload
+(defun counsel-org-tag ()
+  "Add or remove tags in `org-mode'."
+  (interactive)
+  (save-excursion
+    (if (eq major-mode 'org-agenda-mode)
+        (if org-agenda-bulk-marked-entries
+            (setq counsel-org-tags nil)
+          (let ((hdmarker (or (org-get-at-bol 'org-hd-marker)
+                              (org-agenda-error))))
+            (with-current-buffer (marker-buffer hdmarker)
+              (goto-char hdmarker)
+              (setq counsel-org-tags
+                    (split-string (org-get-tags-string) ":" t)))))
+      (unless (org-at-heading-p)
+        (org-back-to-heading t))
+      (setq counsel-org-tags (split-string (org-get-tags-string) ":" t)))
+    (let ((org-last-tags-completion-table
+           (append (and (or org-complete-tags-always-offer-all-agenda-tags
+                            (eq major-mode 'org-agenda-mode))
+                        (org-global-tags-completion-table
+                         (org-agenda-files)))
+                   (unless (boundp 'org-current-tag-alist)
+                     org-tag-persistent-alist)
+                   (or (if (boundp 'org-current-tag-alist)
+                           org-current-tag-alist
+                         org-tag-alist)
+                       (org-get-buffer-tags)))))
+      (ivy-read (counsel-org-tag-prompt)
+                (lambda (str _pred _action)
+                  (delete-dups
+                   (all-completions str #'org-tags-completion-function)))
+                :history 'org-tags-history
+                :action #'counsel-org-tag-action
+                :caller 'counsel-org-tag))))
+
+;;;###autoload
+(defun counsel-org-tag-agenda ()
+  "Set tags for the current agenda item."
+  (interactive)
+  (let ((store (symbol-function 'org-set-tags)))
+    (unwind-protect
+         (progn
+           (fset 'org-set-tags
+                 (symbol-function 'counsel-org-tag))
+           (org-agenda-set-tags nil nil))
+      (fset 'org-set-tags store))))
+
+(define-obsolete-variable-alias 'counsel-org-goto-display-style
+    'counsel-org-headline-display-style "0.10.0")
+
+(defcustom counsel-org-headline-display-style 'path
+  "The style used when displaying matched `org-mode'-headlines.
+
+If headline, the title and the leading stars are displayed.
+
+If path, the path hierarchy is displayed.  For each entry the title is shown.
+`counsel-org-headline-path-separator' is used as separator between entries.
+
+If title or any other value, only the title of the headline is displayed.
+
+Use `counsel-org-headline-display-tags' and
+`counsel-org-headline-display-todo' to display tags and todo
+keywords, respectively."
+  :type '(choice
+          (const :tag "Title only" title)
+          (const :tag "Headline" headline)
+          (const :tag "Path" path))
+  :group 'ivy)
+
+(define-obsolete-variable-alias 'counsel-org-goto-separator
+    'counsel-org-headline-path-separator "0.10.0")
+
+(defcustom counsel-org-headline-path-separator "/"
+  "Character(s) to separate path entries in matched `org-mode'-headlines.
+
+This variable has no effect unless `counsel-org-headline-display-style' is
+set to path."
+  :type 'string
+  :group 'ivy)
+
+(define-obsolete-variable-alias 'counsel-org-goto-display-tags
+    'counsel-org-headline-display-tags "0.10.0")
+
+(defcustom counsel-org-headline-display-tags nil
+  "If non-nil, display tags in matched `org-mode' headlines."
+  :type 'boolean
+  :group 'ivy)
+
+(define-obsolete-variable-alias 'counsel-org-goto-display-todo
+    'counsel-org-headline-display-todo "0.10.0")
+
+(defcustom counsel-org-headline-display-todo nil
+  "If non-nil, display todo keywords in matched `org-mode' headlines."
+  :type 'boolean
+  :group 'ivy)
+
+(defcustom counsel-org-headline-display-priority nil
+  "If non-nil, display priorities in matched `org-mode' headlines."
+  :type 'boolean
+  :group 'ivy)
+
+(defcustom counsel-org-goto-face-style nil
+  "The face used for displaying headlines in `counsel-org-goto' functions.
+
+If org, the default faces from `org-mode' are applied, i.e. org-level-1
+through org-level-8.  Note that no cycling is in effect, therefore headlines
+on levels 9 and higher will not be styled.
+
+If verbatim, the face used in the buffer is applied.  For simple headlines
+this is usually the same as org except that it depends on how much of the
+buffer has been completely loaded.  If your buffer exceeds a certain size,
+headlines are styled lazily depending on which parts of the tree are visible.
+Headlines which are not styled yet in the buffer will appear unstyled in the
+minibuffer as well.  If your headlines contain parts which are fontified
+differently than the headline itself (eg. todo keywords, tags, links) and you
+want these parts to be styled properly, verbatim is the way to go, otherwise
+you are probably better off using org instead.
+
+If custom, the faces defined in `counsel-org-goto-custom-faces' are applied.
+Note that no cycling is in effect, therefore if there is no face defined
+for a certain level, headlines on that level will not be styled.
+
+If nil or any other value, no face is applied to the headline.
+
+See `counsel-org-headline-display-tags' and
+`counsel-org-headline-display-todo' if you want to display tags and todo
+keywords in your headlines."
+  :type '(choice
+          (const :tag "Same as org-mode" org)
+          (const :tag "Verbatim" verbatim)
+          (const :tag "Custom" custom))
+  :group 'ivy)
+
+(defcustom counsel-org-goto-custom-faces nil
+  "Custom faces for displaying headlines in `counsel-org-goto' functions.
+
+The n-th entry is used for headlines on level n, starting with n = 1.  If
+a headline is an a level for which there is no entry in the list, it will
+not be styled.
+
+This variable has no effect unless `counsel-org-goto-face-style' is set
+to custom."
+  :type '(repeat face)
+  :group 'ivy)
+
+(declare-function org-get-heading "org")
+(declare-function org-goto-marker-or-bmk "org")
+(declare-function outline-next-heading "outline")
+
+;;;###autoload
+(defun counsel-org-goto ()
+  "Go to a different location in the current file."
+  (interactive)
+  (ivy-read "Goto: " (counsel-org-goto--get-headlines)
+            :history 'counsel-org-goto-history
+            :action 'counsel-org-goto-action
+            :caller 'counsel-org-goto))
+
+;;;###autoload
+(defun counsel-org-goto-all ()
+  "Go to a different location in any org file."
+  (interactive)
+  (let (entries)
+    (dolist (b (buffer-list))
+      (with-current-buffer b
+        (when (derived-mode-p 'org-mode)
+          (setq entries (nconc entries (counsel-org-goto--get-headlines))))))
+    (ivy-read "Goto: " entries
+              :history 'counsel-org-goto-history
+              :action 'counsel-org-goto-action
+              :caller 'counsel-org-goto-all)))
+
+(defun counsel-org-goto-action (x)
+  "Go to headline in candidate X."
+  (org-goto-marker-or-bmk (cdr x)))
+
+(defvar org-version)
+
+(defun counsel--org-get-heading-args ()
+  "Return list of arguments for `org-get-heading'.
+Try to return the right number of arguments for the current Org
+version.  Argument values are based on the
+`counsel-org-headline-display-*' user options."
+  (nbutlast (mapcar #'not (list counsel-org-headline-display-tags
+                                counsel-org-headline-display-todo
+                                counsel-org-headline-display-priority))
+            (if (if (fboundp 'func-arity)
+                    (< (cdr (func-arity #'org-get-heading)) 3)
+                  (version< org-version "9.1.1"))
+                1 0)))
+
+(defun counsel-org-goto--get-headlines ()
+  "Get all headlines from the current org buffer."
+  (save-excursion
+    (let (entries
+          start-pos
+          stack
+          (stack-level 0)
+          (heading-args (counsel--org-get-heading-args)))
+      (goto-char (point-min))
+      (setq start-pos (or (and (org-at-heading-p)
+                               (point))
+                          (outline-next-heading)))
+      (while start-pos
+        (let ((name (or (apply #'org-get-heading heading-args) ""))
+              level)
+          (search-forward " ")
+          (setq level
+                (- (length (buffer-substring-no-properties start-pos (point)))
+                   1))
+          (cond ((eq counsel-org-headline-display-style 'path)
+                 ;; Update stack. The empty entry guards against incorrect
+                 ;; headline hierarchies e.g. a level 3 headline immediately
+                 ;; following a level 1 entry.
+                 (while (<= level stack-level)
+                   (pop stack)
+                   (cl-decf stack-level))
+                 (while (> level stack-level)
+                   (push "" stack)
+                   (cl-incf stack-level))
+                 (setf (car stack) (counsel-org-goto--add-face name level))
+                 (setq name (mapconcat
+                             #'identity
+                             (reverse stack)
+                             counsel-org-headline-path-separator)))
+                (t
+                 (when (eq counsel-org-headline-display-style 'headline)
+                   (setq name (concat (make-string level ?*) " " name)))
+                 (setq name (counsel-org-goto--add-face name level))))
+          (push (cons name (point-marker)) entries))
+        (setq start-pos (outline-next-heading)))
+      (nreverse entries))))
+
+(defun counsel-org-goto--add-face (name level)
+  "Add face to headline NAME on LEVEL.
+The face can be customized through `counsel-org-goto-face-style'."
+  (or (and (eq counsel-org-goto-face-style 'org)
+           (propertize
+            name
+            'face
+            (concat "org-level-" (number-to-string level))))
+      (and (eq counsel-org-goto-face-style 'verbatim)
+           name)
+      (and (eq counsel-org-goto-face-style 'custom)
+           (propertize
+            name
+            'face
+            (nth (1- level) counsel-org-goto-custom-faces)))
+      (propertize name 'face 'minibuffer-prompt)))
+
+;;** `counsel-org-file'
+(declare-function org-attach-dir "org-attach")
+(declare-function org-attach-file-list "org-attach")
+(defvar org-attach-directory)
+
+(defun counsel-org-files ()
+  "Return list of all files under current Org attachment directories.
+Filenames returned are relative to `default-directory'.  For each
+attachment directory associated with the current buffer, all
+contained files are listed, so the return value could conceivably
+include attachments of other Org buffers."
+  (require 'org-attach)
+  (let* ((ids (let (res)
+                (save-excursion
+                  (goto-char (point-min))
+                  (while (re-search-forward "^:ID:[\t ]+\\(.*\\)$" nil t)
+                    (push (match-string-no-properties 1) res))
+                  (nreverse res))))
+         (files
+          (cl-remove-if-not
+           #'file-exists-p
+           (mapcar (lambda (id)
+                     (expand-file-name
+                      (concat (substring id 0 2) "/" (substring id 2))
+                      org-attach-directory))
+                   ids))))
+    (cl-mapcan
+     (lambda (dir)
+       (mapcar (lambda (file)
+                 (file-relative-name (expand-file-name file dir)))
+               (org-attach-file-list dir)))
+     files)))
+
+;;;###autoload
+(defun counsel-org-file ()
+  "Browse all attachments for current Org file."
+  (interactive)
+  (ivy-read "file: " (counsel-org-files)
+            :action 'counsel-locate-action-dired
+            :caller 'counsel-org-file))
+
+;;** `counsel-org-entity'
+(defvar org-entities)
+(defvar org-entities-user)
+
+;;;###autoload
+(defun counsel-org-entity ()
+  "Complete Org entities using Ivy."
+  (interactive)
+  (require 'org)
+  (ivy-read "Entity: " (cl-loop for element in (append org-entities org-entities-user)
+                          unless (stringp element)
+                          collect (cons
+                                   (format "%20s | %20s | %20s | %s"
+                                           (cl-first element)    ; name
+                                           (cl-second element)   ; latex
+                                           (cl-fourth element)   ; html
+                                           (cl-seventh element)) ; utf-8
+                                   element))
+            :require-match t
+            :action '(1
+                      ("u" (lambda (candidate)
+                             (insert (cl-seventh (cdr candidate)))) "utf-8")
+                      ("o" (lambda (candidate)
+                             (insert "\\" (cl-first (cdr candidate)))) "org-entity")
+                      ("l" (lambda (candidate)
+                             (insert (cl-second (cdr candidate)))) "latex")
+                      ("h" (lambda (candidate)
+                             (insert (cl-fourth (cdr candidate)))) "html")
+                      ("a" (lambda (candidate)
+                             (insert (cl-fifth (cdr candidate)))) "ascii")
+                      ("L" (lambda (candidate)
+                             (insert (cl-sixth (cdr candidate))) "Latin-1")))))
+
+;;** `counsel-org-capture'
+(defvar org-capture-templates)
+(defvar org-capture-templates-contexts)
+(declare-function org-contextualize-keys "org")
+(declare-function org-capture-goto-last-stored "org-capture")
+(declare-function org-capture-goto-target "org-capture")
+(declare-function org-capture-upgrade-templates "org-capture")
+
+;;;###autoload
+(defun counsel-org-capture ()
+  "Capture something."
+  (interactive)
+  (require 'org-capture)
+  (ivy-read "Capture template: "
+            (delq nil
+                  (mapcar
+                   (lambda (x)
+                     (when (> (length x) 2)
+                       (format "%-5s %s" (nth 0 x) (nth 1 x))))
+                   ;; We build the list of capture templates as in
+                   ;; `org-capture-select-template':
+                   (or (org-contextualize-keys
+                        (org-capture-upgrade-templates org-capture-templates)
+                        org-capture-templates-contexts)
+                       '(("t" "Task" entry (file+headline "" "Tasks")
+                          "* TODO %?\n  %u\n  %a")))))
+            :require-match t
+            :action (lambda (x)
+                      (org-capture nil (car (split-string x))))
+            :caller 'counsel-org-capture))
+
+(ivy-set-actions
+ 'counsel-org-capture
+ `(("t" ,(lambda (x)
+           (org-capture-goto-target (car (split-string x))))
+        "go to target")
+   ("l" ,(lambda (_x)
+           (org-capture-goto-last-stored))
+        "go to last stored")
+   ("p" ,(lambda (x)
+           (org-capture 0 (car (split-string x))))
+        "insert template at point")
+   ("c" ,(lambda (_x)
+           (customize-variable 'org-capture-templates))
+        "customize org-capture-templates")))
+
+;;** `counsel-org-agenda-headlines'
+(defvar org-odd-levels-only)
+(declare-function org-set-startup-visibility "org")
+(declare-function org-show-entry "org")
+(declare-function org-map-entries "org")
+(declare-function org-heading-components "org")
+
+(defun counsel-org-agenda-headlines-action-goto (headline)
+  "Go to the `org-mode' agenda HEADLINE."
+  (find-file (nth 1 headline))
+  (org-set-startup-visibility)
+  (goto-char (nth 2 headline))
+  (org-show-entry))
+
+(ivy-set-actions
+ 'counsel-org-agenda-headlines
+ '(("g" counsel-org-agenda-headlines-action-goto "goto headline")))
+
+(defvar counsel-org-agenda-headlines-history nil
+  "History for `counsel-org-agenda-headlines'.")
+
+(declare-function org-get-outline-path "org")
+
+(defun counsel-org-agenda-headlines--candidates ()
+  "Return a list of completion candidates for `counsel-org-agenda-headlines'."
+  (org-map-entries
+   (lambda ()
+     (let* ((components (org-heading-components))
+            (level (and (eq counsel-org-headline-display-style 'headline)
+                        (make-string
+                         (if org-odd-levels-only
+                             (nth 1 components)
+                           (nth 0 components))
+                         ?*)))
+            (todo (and counsel-org-headline-display-todo
+                       (nth 2 components)))
+            (path (and (eq counsel-org-headline-display-style 'path)
+                       (org-get-outline-path)))
+            (priority (and counsel-org-headline-display-priority
+                           (nth 3 components)))
+            (text (nth 4 components))
+            (tags (and counsel-org-headline-display-tags
+                       (nth 5 components))))
+       (list
+        (mapconcat
+         'identity
+         (cl-remove-if 'null
+                       (list
+                        level
+                        todo
+                        (and priority (format "[#%c]" priority))
+                        (mapconcat 'identity
+                                   (append path (list text))
+                                   counsel-org-headline-path-separator)
+                        tags))
+         " ")
+        (buffer-file-name) (point))))
+   nil
+   'agenda))
+
+;;;###autoload
+(defun counsel-org-agenda-headlines ()
+  "Choose from headers of `org-mode' files in the agenda."
+  (interactive)
+  (require 'org)
+  (let ((minibuffer-allow-text-properties t))
+    (ivy-read "Org headline: "
+              (counsel-org-agenda-headlines--candidates)
+              :action #'counsel-org-agenda-headlines-action-goto
+              :history 'counsel-org-agenda-headlines-history
+              :caller 'counsel-org-agenda-headlines)))
+
+;;* Misc. Emacs
+;;** `counsel-mark-ring'
+(defun counsel-mark-ring ()
+  "Browse `mark-ring' interactively.
+Obeys `widen-automatically', which see."
+  (interactive)
+  (let ((cands
+         (save-excursion
+           (save-restriction
+             ;; Widen, both to save `line-number-at-pos' the trouble
+             ;; and for `buffer-substring' to work.
+             (widen)
+             (let ((fmt (format "%%%dd %%s"
+                                (length (number-to-string
+                                         (line-number-at-pos (point-max)))))))
+               (mapcar (lambda (mark)
+                         (goto-char (marker-position mark))
+                         (let ((linum (line-number-at-pos))
+                               (line  (buffer-substring
+                                       (line-beginning-position)
+                                       (line-end-position))))
+                           (cons (format fmt linum line) (point))))
+                       (sort (delete-dups (copy-sequence mark-ring)) #'<)))))))
+    (if cands
+        (ivy-read "Mark: " cands
+                  :require-match t
+                  :action (lambda (cand)
+                            (let ((pos (cdr-safe cand)))
+                              (when pos
+                                (unless (<= (point-min) pos (point-max))
+                                  (if widen-automatically
+                                      (widen)
+                                    (error "\
+Position of selected mark outside accessible part of buffer")))
+                                (goto-char pos))))
+                  :caller 'counsel-mark-ring)
+      (message "Mark ring is empty"))))
+
+;;** `counsel-package'
+(defvar package--initialized)
+(defvar package-alist)
+(defvar package-archive-contents)
+(declare-function package-installed-p "package")
+(declare-function package-delete "package")
+
+(defun counsel-package ()
+  "Install or delete packages.
+
+Packages not currently installed have a \"+\" prepended.  Selecting one
+of these will try to install it.  Currently installed packages have a
+\"-\" prepended, and selecting one of these will delete the package.
+
+Additional Actions:
+
+  \\<ivy-minibuffer-map>\\[ivy-dispatching-done] d: describe package"
+  (interactive)
+  (unless package--initialized
+    (package-initialize t))
+  (unless package-archive-contents
+    (package-refresh-contents))
+  (let ((cands (mapcar #'counsel-package-make-package-cell
+                       package-archive-contents)))
+    (ivy-read "Packages (install +pkg or delete -pkg): "
+              (sort cands #'counsel--package-sort)
+              :action #'counsel-package-action
+              :initial-input "^+ "
+              :require-match t
+              :caller 'counsel-package)))
+
+(defun counsel-package-make-package-cell (pkg)
+  "Make candidate for package PKG."
+  (let* ((pkg-sym (car pkg))
+         (pkg-name (symbol-name pkg-sym)))
+    (cons (format "%s%s"
+                  (if (package-installed-p pkg-sym) "-" "+")
+                  pkg-name)
+          pkg)))
+
+(defun counsel-package-action (pkg-cons)
+  "Delete or install package in PKG-CONS."
+  (let ((pkg (cadr pkg-cons)))
+    (if (package-installed-p pkg)
+        (package-delete
+         (cadr (assoc pkg package-alist)))
+      (package-install pkg))))
+
+(defun counsel-package-action-describe (pkg-cons)
+  "Call `describe-package' for package in PKG-CONS."
+  (describe-package (cadr pkg-cons)))
+
+(declare-function package-desc-extras "package")
+
+(defun counsel-package-action-homepage (pkg-cons)
+  "Open homepage for package in PKG-CONS."
+  (let* ((desc-list (cddr pkg-cons))
+         (desc (if (listp desc-list) (car desc-list) desc-list))
+         (url (cdr (assoc :url (package-desc-extras desc)))))
+    (when url
+      (require 'browse-url)
+      (browse-url url))))
+
+(defun counsel--package-sort (a b)
+  "Sort function for `counsel-package'.
+A is the left hand side, B the right hand side."
+  (let* ((a (car a))
+         (b (car b))
+         (a-inst (= (string-to-char a) ?+))
+         (b-inst (= (string-to-char b) ?+)))
+    (or (and a-inst (not b-inst))
+        (and (eq a-inst b-inst) (string-lessp a b)))))
+
+(ivy-set-actions
+ 'counsel-package
+ '(("d" counsel-package-action-describe "describe package")
+   ("h" counsel-package-action-homepage "open package homepage")))
+
+;;** `counsel-tmm'
+(defvar tmm-km-list nil)
+(declare-function tmm-get-keymap "tmm")
+(declare-function tmm--completion-table "tmm")
+(declare-function tmm-get-keybind "tmm")
+
+(defun counsel-tmm-prompt (menu)
+  "Select and call an item from the MENU keymap."
+  (let (out
+        choice
+        chosen-string)
+    (setq tmm-km-list nil)
+    (map-keymap (lambda (k v) (tmm-get-keymap (cons k v))) menu)
+    (setq tmm-km-list (nreverse tmm-km-list))
+    (setq out (ivy-read "Menu bar: " (tmm--completion-table tmm-km-list)
+                        :require-match t
+                        :sort nil))
+    (setq choice (cdr (assoc out tmm-km-list)))
+    (setq chosen-string (car choice))
+    (setq choice (cdr choice))
+    (cond ((keymapp choice)
+           (counsel-tmm-prompt choice))
+          ((and choice chosen-string)
+           (setq last-command-event chosen-string)
+           (call-interactively choice)))))
+
+(defvar tmm-table-undef)
+
+;;;###autoload
+(defun counsel-tmm ()
+  "Text-mode emulation of looking and choosing from a menubar."
+  (interactive)
+  (require 'tmm)
+  (run-hooks 'menu-bar-update-hook)
+  (setq tmm-table-undef nil)
+  (counsel-tmm-prompt (tmm-get-keybind [menu-bar])))
+
+;;** `counsel-yank-pop'
+(defcustom counsel-yank-pop-truncate-radius 2
+  "Number of context lines around `counsel-yank-pop' candidates."
+  :type 'integer
+  :group 'ivy)
+
+(defun counsel--yank-pop-truncate (str)
+  "Truncate STR for use in `counsel-yank-pop'."
+  (condition-case nil
+      (let* ((lines (split-string str "\n" t))
+             (n (length lines))
+             (re (ivy-re-to-str ivy--old-re))
+             (first-match (cl-position-if
+                           (lambda (s) (string-match re s))
+                           lines))
+             (beg (max 0 (- first-match
+                            counsel-yank-pop-truncate-radius)))
+             (end (min n (+ first-match
+                            counsel-yank-pop-truncate-radius
+                            1)))
+             (seq (cl-subseq lines beg end)))
+        (if (null first-match)
+            (error "Could not match %s" str)
+          (when (> beg 0)
+            (setcar seq (concat "[...] " (car seq))))
+          (when (< end n)
+            (setcar (last seq)
+                    (concat (car (last seq)) " [...]")))
+          (mapconcat #'identity seq "\n")))
+    (error str)))
+
+(defcustom counsel-yank-pop-separator "\n"
+  "Separator for the kill ring strings in `counsel-yank-pop'."
+  :group 'ivy
+  :type 'string)
+
+(make-obsolete-variable
+ 'counsel-yank-pop-height
+ 'ivy-height-alist
+ "<2018-04-14 Fri>") ;; TODO: Add version tag
+
+(defcustom counsel-yank-pop-height 5
+  "The `ivy-height' of `counsel-yank-pop'."
+  :group 'ivy
+  :type 'integer)
+
+(defun counsel--yank-pop-format-function (cand-pairs)
+  "Transform CAND-PAIRS into a string for `counsel-yank-pop'."
+  (ivy--format-function-generic
+   (lambda (str)
+     (mapconcat
+      (lambda (s)
+        (ivy--add-face s 'ivy-current-match))
+      (split-string
+       (counsel--yank-pop-truncate str) "\n" t)
+      "\n"))
+   (lambda (str)
+     (counsel--yank-pop-truncate str))
+   cand-pairs
+   counsel-yank-pop-separator))
+
+(defun counsel--yank-pop-position (s)
+  "Return position of S in `kill-ring' relative to last yank."
+  (or (cl-position s kill-ring-yank-pointer :test #'equal-including-properties)
+      (cl-position s kill-ring-yank-pointer :test #'equal)
+      (+ (or (cl-position s kill-ring :test #'equal-including-properties)
+             (cl-position s kill-ring :test #'equal))
+         (- (length kill-ring-yank-pointer)
+            (length kill-ring)))))
+
+(defun counsel-string-non-blank-p (s)
+  "Return non-nil if S includes non-blank characters.
+Newlines and carriage returns are considered blank."
+  (not (string-match-p "\\`[\n\r[:blank:]]*\\'" s)))
+
+(defcustom counsel-yank-pop-filter #'counsel-string-non-blank-p
+  "Unary filter function applied to `counsel-yank-pop' candidates.
+All elements of `kill-ring' for which this function returns nil
+will be destructively removed from `kill-ring' before completion.
+All blank strings are deleted from `kill-ring' by default."
+  :group 'ivy
+  :type '(radio
+          (function-item counsel-string-non-blank-p)
+          (function-item identity)
+          (function :tag "Other")))
+
+(defun counsel--yank-pop-kills ()
+  "Return filtered `kill-ring' for `counsel-yank-pop' completion.
+Both `kill-ring' and `kill-ring-yank-pointer' may be
+destructively modifed to eliminate duplicates under
+`equal-including-properties', satisfy `counsel-yank-pop-filter',
+and incorporate `interprogram-paste-function'."
+  ;; Protect against `kill-ring' and result of
+  ;; `interprogram-paste-function' both being nil
+  (ignore-errors (current-kill 0))
+  ;; Keep things consistent with the rest of Emacs
+  (dolist (sym '(kill-ring kill-ring-yank-pointer))
+    (set sym (cl-delete-duplicates
+              (cl-delete-if-not counsel-yank-pop-filter (symbol-value sym))
+              :test #'equal-including-properties :from-end t)))
+  kill-ring)
+
+(defun counsel-yank-pop-action (s)
+  "Like `yank-pop', but insert the kill corresponding to S.
+Signal a `buffer-read-only' error if called from a read-only
+buffer position."
+  (with-ivy-window
+    (barf-if-buffer-read-only)
+    (setq last-command 'yank)
+    (setq yank-window-start (window-start))
+    ;; Avoid unexpected additions to `kill-ring'
+    (let (interprogram-paste-function)
+      (yank-pop (counsel--yank-pop-position s)))
+    (setq ivy-completion-end (point))))
+
+(defun counsel-yank-pop-action-remove (s)
+  "Remove all occurrences of S from the kill ring."
+  (dolist (sym '(kill-ring kill-ring-yank-pointer))
+    (set sym (cl-delete s (symbol-value sym)
+                        :test #'equal-including-properties)))
+  ;; Update collection and preselect for next `ivy-call'
+  (setf (ivy-state-collection ivy-last) kill-ring)
+  (setf (ivy-state-preselect ivy-last)
+        (nth (min ivy--index (1- (length kill-ring)))
+             kill-ring))
+  (ivy--reset-state ivy-last))
+
+(defun counsel-yank-pop-action-rotate (s)
+  "Rotate the yanking point to S in the kill ring.
+See `current-kill' for how this interacts with the window system
+selection."
+  (let ((i (counsel--yank-pop-position s)))
+    ;; Avoid unexpected additions to `kill-ring'
+    (let (interprogram-paste-function)
+      (setf (ivy-state-preselect ivy-last) (current-kill i)))
+    ;; Manually change window system selection because `current-kill' won't
+    (when (and (zerop i)
+               yank-pop-change-selection
+               interprogram-cut-function)
+      (funcall interprogram-cut-function (car kill-ring-yank-pointer))))
+  (ivy--reset-state ivy-last))
+
+(defcustom counsel-yank-pop-preselect-last nil
+  "Whether `counsel-yank-pop' preselects the last kill by default.
+
+The command `counsel-yank-pop' always preselects the same kill
+that `yank-pop' would have inserted, given the same prefix
+argument.
+
+When `counsel-yank-pop-preselect-last' is nil (the default), the
+prefix argument of `counsel-yank-pop' defaults to 1 (as per
+`yank-pop'), which causes the next-to-last kill to be
+preselected.  Otherwise, the prefix argument defaults to 0, which
+results in the most recent kill being preselected."
+  :group 'ivy
+  :type 'boolean)
+
+;;;###autoload
+(defun counsel-yank-pop (&optional arg)
+  "Ivy replacement for `yank-pop'.
+ARG has the same meaning as in `yank-pop', but its default value
+can be controlled with `counsel-yank-pop-preselect-last', which
+see.  See also `counsel-yank-pop-filter' for how to filter
+candidates.
+Note: Duplicate elements of `kill-ring' are always deleted."
+  ;; Do not specify `*' to allow browsing `kill-ring' in read-only buffers
+  (interactive "P")
+  (let ((ivy-format-function #'counsel--yank-pop-format-function)
+        (kills (counsel--yank-pop-kills)))
+    (unless kills
+      (error "Kill ring is empty or blank"))
+    (unless (eq last-command 'yank)
+      (push-mark))
+    (setq ivy-completion-beg (mark t))
+    (setq ivy-completion-end (point))
+    (ivy-read "kill-ring: " kills
+              :require-match t
+              :preselect (let (interprogram-paste-function)
+                           (current-kill (cond
+                                           (arg (prefix-numeric-value arg))
+                                           (counsel-yank-pop-preselect-last 0)
+                                           (t 1))
+                                         t))
+              :action #'counsel-yank-pop-action
+              :caller 'counsel-yank-pop)))
+
+(add-to-list 'ivy-height-alist '(counsel-yank-pop . 5))
+
+(ivy-set-actions
+ 'counsel-yank-pop
+ '(("d" counsel-yank-pop-action-remove "delete")
+   ("r" counsel-yank-pop-action-rotate "rotate")))
+
+;;** `counsel-evil-registers'
+(make-obsolete-variable
+ 'counsel-evil-registers-height
+ 'ivy-height-alist
+ "<2018-04-14 Fri>") ;; TODO: Add version tag
+
+(defcustom counsel-evil-registers-height 5
+  "The `ivy-height' of `counsel-evil-registers'."
+  :group 'ivy
+  :type 'integer)
+
+(defun counsel-evil-registers ()
+  "Ivy replacement for `evil-show-registers'."
+  (interactive)
+  (if (fboundp 'evil-register-list)
+      (let ((ivy-format-function #'counsel--yank-pop-format-function))
+        (ivy-read "evil-registers: "
+                  (cl-loop for (key . val) in (evil-register-list)
+                     collect (format "[%c]: %s" key (if (stringp val) val "")))
+                  :require-match t
+                  :action #'counsel-evil-registers-action
+                  :caller 'counsel-evil-registers))
+    (user-error "Required feature `evil' not installed.")))
+
+(add-to-list 'ivy-height-alist '(counsel-evil-registers . 5))
+
+(defun counsel-evil-registers-action (s)
+  "Paste contents of S, trimming the register part.
+
+S will be of the form \"[register]: content\"."
+  (with-ivy-window
+    (insert
+     (replace-regexp-in-string "\\`\\[.*?\\]: " "" s))))
+
+;;** `counsel-imenu'
+(defvar imenu-auto-rescan)
+(defvar imenu-auto-rescan-maxout)
+(declare-function imenu--subalist-p "imenu")
+(declare-function imenu--make-index-alist "imenu")
+
+(defun counsel-imenu-get-candidates-from (alist &optional prefix)
+  "Create a list of (key . value) from ALIST.
+PREFIX is used to create the key."
+  (cl-mapcan (lambda (elm)
+               (if (imenu--subalist-p elm)
+                   (counsel-imenu-get-candidates-from
+                    (cl-loop for (e . v) in (cdr elm) collect
+                         (cons e (if (integerp v) (copy-marker v) v)))
+                    ;; pass the prefix to next recursive call
+                    (concat prefix (if prefix ".") (car elm)))
+                 (let ((key (concat
+                             (when prefix
+                               (concat
+                                (propertize prefix 'face 'compilation-info)
+                                ": "))
+                             (car elm))))
+                   (list (cons key
+                               ;; create a imenu candidate here
+                               (cons key (if (overlayp (cdr elm))
+                                             (overlay-start (cdr elm))
+                                           (cdr elm))))))))
+             alist))
+
+(defvar counsel-imenu-map
+  (let ((map (make-sparse-keymap)))
+    (define-key map (kbd "C-l") 'ivy-call-and-recenter)
+    map))
+
+(defun counsel-imenu-categorize-functions (items)
+  "Categorize all the functions of imenu."
+  (let* ((others (cl-remove-if-not (lambda (x) (listp (cdr x))) items))
+         (functions (cl-remove-if (lambda (x) (listp (cdr x))) items)))
+    (if functions
+        (append others `(("Functions" ,@functions)))
+      items)))
+
+;;;###autoload
+(defun counsel-imenu ()
+  "Jump to a buffer position indexed by imenu."
+  (interactive)
+  (unless (featurep 'imenu)
+    (require 'imenu nil t))
+  (let* ((imenu-auto-rescan t)
+         (imenu-auto-rescan-maxout (if current-prefix-arg
+                                       (buffer-size)
+                                     imenu-auto-rescan-maxout))
+         (items (imenu--make-index-alist t))
+         (items (delete (assoc "*Rescan*" items) items))
+         (items (counsel-imenu-categorize-functions items)))
+    (ivy-read "imenu items: " (counsel-imenu-get-candidates-from items)
+              :preselect (thing-at-point 'symbol)
+              :require-match t
+              :action (lambda (candidate)
+                        (with-ivy-window
+                          ;; In org-mode, (imenu candidate) will expand child node
+                          ;; after jump to the candidate position
+                          (imenu (cdr candidate))))
+              :keymap counsel-imenu-map
+              :caller 'counsel-imenu)))
+
+;;** `counsel-list-processes'
+(defun counsel-list-processes-action-delete (x)
+  "Delete process X."
+  (delete-process x)
+  (setf (ivy-state-collection ivy-last)
+        (setq ivy--all-candidates
+              (delete x ivy--all-candidates))))
+
+(defun counsel-list-processes-action-switch (x)
+  "Switch to buffer of process X."
+  (let* ((proc (get-process x))
+         (buf (and proc (process-buffer proc))))
+    (if buf
+        (switch-to-buffer buf)
+      (message "Process %s doesn't have a buffer" x))))
+
+;;;###autoload
+(defun counsel-list-processes ()
+  "Offer completion for `process-list'.
+The default action deletes the selected process.
+An extra action allows to switch to the process buffer."
+  (interactive)
+  (with-temp-buffer
+    (list-processes--refresh))
+  (ivy-read "Process: " (mapcar #'process-name (process-list))
+            :require-match t
+            :action
+            '(1
+              ("o" counsel-list-processes-action-delete "kill")
+              ("s" counsel-list-processes-action-switch "switch"))
+            :caller 'counsel-list-processes))
+
+;;** `counsel-ace-link'
+(defun counsel-ace-link ()
+  "Use Ivy completion for `ace-link'."
+  (interactive)
+  (let (collection action)
+    (cond ((eq major-mode 'Info-mode)
+           (setq collection 'ace-link--info-collect)
+           (setq action 'ace-link--info-action))
+          ((eq major-mode 'help-mode)
+           (setq collection 'ace-link--help-collect)
+           (setq action 'ace-link--help-action))
+          ((eq major-mode 'woman-mode)
+           (setq collection 'ace-link--woman-collect)
+           (setq action 'ace-link--woman-action))
+          ((eq major-mode 'eww-mode)
+           (setq collection 'ace-link--eww-collect)
+           (setq action 'ace-link--eww-action))
+          ((eq major-mode 'compilation-mode)
+           (setq collection 'ace-link--eww-collect)
+           (setq action 'ace-link--compilation-action))
+          ((eq major-mode 'org-mode)
+           (setq collection 'ace-link--org-collect)
+           (setq action 'ace-link--org-action)))
+    (if (null collection)
+        (error "%S is not supported" major-mode)
+      (ivy-read "Ace-Link: " (funcall collection)
+                :action (lambda (x) (funcall action (cdr x)))
+                :require-match t
+                :caller 'counsel-ace-link))))
+
+;;** `counsel-minibuffer-history'
+(make-obsolete
+ 'counsel-expression-history
+ 'counsel-minibuffer-history
+ "0.10.0 <2017-11-13 Mon>")
+
+(make-obsolete
+ 'counsel-shell-command-history
+ 'counsel-minibuffer-history
+ "0.10.0 <2017-11-13 Mon>")
+
+;;;###autoload
+(defun counsel-expression-history ()
+  "Select an element of `read-expression-history'.
+And insert it into the minibuffer.  Useful during `eval-expression'."
+  (interactive)
+  (let ((enable-recursive-minibuffers t))
+    (ivy-read "Expression: "
+              (delete-dups (copy-sequence read-expression-history))
+              :action #'insert
+              :caller 'counsel-expression-history)))
+
+;;;###autoload
+(defun counsel-shell-command-history ()
+  "Browse shell command history."
+  (interactive)
+  (ivy-read "Command: " shell-command-history
+            :action #'insert
+            :caller 'counsel-shell-command-history))
+
+;;;###autoload
+(defun counsel-minibuffer-history ()
+  "Browse minibuffer history."
+  (interactive)
+  (let ((enable-recursive-minibuffers t))
+    (ivy-read "History: "
+              (delete-dups (copy-sequence
+                            (symbol-value minibuffer-history-variable)))
+              :action #'insert
+              :caller 'counsel-minibuffer-history)))
+
+;;** `counsel-esh-history'
+(defun counsel--browse-history (elements)
+  "Use Ivy to navigate through ELEMENTS."
+  (setq ivy-completion-beg (point))
+  (setq ivy-completion-end (point))
+  (ivy-read "Symbol name: "
+            (delete-dups
+             (when (> (ring-size elements) 0)
+               (ring-elements elements)))
+            :action #'ivy-completion-in-region-action))
+
+(defvar eshell-history-ring)
+
+;;;###autoload
+(defun counsel-esh-history ()
+  "Browse Eshell history."
+  (interactive)
+  (require 'em-hist)
+  (counsel--browse-history eshell-history-ring))
+
+(defvar comint-input-ring)
+
+;;;###autoload
+(defun counsel-shell-history ()
+  "Browse shell history."
+  (interactive)
+  (require 'comint)
+  (counsel--browse-history comint-input-ring))
+
+;;** `counsel-hydra-heads'
+(defvar hydra-curr-body-fn)
+(declare-function hydra-keyboard-quit "ext:hydra")
+
+(defun counsel-hydra-heads ()
+  "Call a head of the current/last hydra."
+  (interactive)
+  (let* ((base (substring
+                (prin1-to-string hydra-curr-body-fn)
+                0 -4))
+         (heads (eval (intern (concat base "heads"))))
+         (keymap (eval (intern (concat base "keymap"))))
+         (head-names
+          (mapcar (lambda (x)
+                    (cons
+                     (if (nth 2 x)
+                         (format "[%s] %S (%s)" (nth 0 x) (nth 1 x) (nth 2 x))
+                       (format "[%s] %S" (nth 0 x) (nth 1 x)))
+                     (lookup-key keymap (kbd (nth 0 x)))))
+                  heads)))
+    (ivy-read "head: " head-names
+              :action (lambda (x) (call-interactively (cdr x))))
+    (hydra-keyboard-quit)))
+;;** `counsel-semantic'
+(declare-function semantic-tag-start "semantic/tag")
+(declare-function semantic-tag-class "semantic/tag")
+(declare-function semantic-tag-name "semantic/tag")
+(declare-function semantic-tag-put-attribute "semantic/tag")
+(declare-function semantic-tag-get-attribute "semantic/tag")
+(declare-function semantic-fetch-tags "semantic")
+(declare-function semantic-format-tag-summarize "semantic/format")
+(declare-function semantic-active-p "semantic/fw")
+
+(defun counsel-semantic-action (x)
+  "Got to semantic TAG."
+  (goto-char (semantic-tag-start (cdr x))))
+
+(defvar counsel-semantic-history nil
+  "History for `counsel-semantic'.")
+
+(defun counsel-semantic-format-tag (tag)
+  "Return a pretty string representation of TAG."
+  (let ((depth (or (semantic-tag-get-attribute tag :depth) 0))
+        (parent (semantic-tag-get-attribute tag :parent)))
+    (concat (make-string (* depth 2) ?\ )
+            (if parent
+                (concat "(" parent ") ")
+              "")
+            (semantic-format-tag-summarize tag nil t))))
+
+(defun counsel-flatten-forest (func treep forest)
+  "Use FUNC and TREEP to flatten FOREST.
+FUNC is applied to each node.
+TREEP is used to expand internal nodes."
+  (cl-labels ((reducer (forest out depth)
+                (dolist (tree forest)
+                  (let ((this (cons (funcall func tree depth) out))
+                        (leafs (funcall treep tree)))
+                    (setq out
+                          (if leafs
+                              (reducer leafs this (1+ depth))
+                            this))))
+                out))
+    (nreverse (reducer forest nil 0))))
+
+(defun counsel-semantic-tags ()
+  "Fetch semantic tags."
+  (counsel-flatten-forest
+   (lambda (tree depth)
+     (semantic-tag-put-attribute tree :depth depth))
+   (lambda (tag)
+     (when (eq (semantic-tag-class tag) 'type)
+       (let ((name (semantic-tag-name tag)))
+         (mapcar
+          (lambda (x) (semantic-tag-put-attribute x :parent name))
+          (semantic-tag-get-attribute tag :members)))))
+   (semantic-fetch-tags)))
+
+(defun counsel-semantic ()
+  "Jump to a semantic tag in the current buffer."
+  (interactive)
+  (let ((tags (mapcar
+               (lambda (x)
+                 (cons
+                  (counsel-semantic-format-tag x)
+                  x))
+               (counsel-semantic-tags))))
+    (ivy-read "tag: " tags
+              :action 'counsel-semantic-action
+              :history 'counsel-semantic-history
+              :caller 'counsel-semantic)))
+
+(defun counsel-semantic-or-imenu ()
+  (interactive)
+  (require 'semantic/fw)
+  (if (semantic-active-p)
+      (counsel-semantic)
+    (counsel-imenu)))
+
+;;** `counsel-outline'
+(defun counsel-outline-candidates ()
+  "Return outline candidates."
+  (let (cands)
+    (save-excursion
+      (goto-char (point-min))
+      (while (re-search-forward outline-regexp nil t)
+        (skip-chars-forward " ")
+        (push (cons (buffer-substring-no-properties
+                     (point) (line-end-position))
+                    (line-beginning-position))
+              cands))
+      (nreverse cands))))
+
+(defun counsel-outline-action (x)
+  "Go to outline X."
+  (with-ivy-window
+    (goto-char (cdr x))))
+
+;;;###autoload
+(defun counsel-outline ()
+  "Jump to outline with completion."
+  (interactive)
+  (ivy-read "outline: " (counsel-outline-candidates)
+            :action #'counsel-outline-action))
+
+;;** `counsel-ibuffer'
+(defvar counsel-ibuffer--buffer-name nil
+  "Name of the buffer to use for `counsel-ibuffer'.")
+
+;;;###autoload
+(defun counsel-ibuffer (&optional name)
+  "Use ibuffer to switch to another buffer.
+NAME specifies the name of the buffer (defaults to \"*Ibuffer*\")."
+  (interactive)
+  (setq counsel-ibuffer--buffer-name (or name "*Ibuffer*"))
+  (ivy-read "Switch to buffer: " (counsel-ibuffer--get-buffers)
+            :history 'counsel-ibuffer-history
+            :action #'counsel-ibuffer-visit-buffer
+            :caller 'counsel-ibuffer))
+
+(declare-function ibuffer-update "ibuffer")
+(declare-function ibuffer-current-buffer "ibuffer")
+(declare-function ibuffer-forward-line "ibuffer")
+(defvar ibuffer-movement-cycle)
+
+(defun counsel-ibuffer--get-buffers ()
+  "Return list of buffer-related lines in Ibuffer as strings."
+  (let ((oldbuf (get-buffer counsel-ibuffer--buffer-name)))
+    (unless oldbuf
+      ;; Avoid messing with the user's precious window/frame configuration.
+      (save-window-excursion
+        (let ((display-buffer-overriding-action
+               '(display-buffer-same-window (inhibit-same-window . nil))))
+          (ibuffer nil counsel-ibuffer--buffer-name nil t))))
+    (with-current-buffer counsel-ibuffer--buffer-name
+      (when oldbuf
+        ;; Forcibly update possibly stale existing buffer.
+        (ibuffer-update nil t))
+      (goto-char (point-min))
+      (let ((ibuffer-movement-cycle nil)
+            entries)
+        (while (not (eobp))
+          (ibuffer-forward-line 1 t)
+          (let ((buf (ibuffer-current-buffer)))
+            ;; We are only interested in buffers we can actually visit.
+            ;; This filters out headings and other unusable entries.
+            (when (buffer-live-p buf)
+              (push (cons (buffer-substring-no-properties
+                           (line-beginning-position)
+                           (line-end-position))
+                          buf)
+                    entries))))
+        (nreverse entries)))))
+
+(defun counsel-ibuffer-visit-buffer (x)
+  "Switch to buffer of candidate X."
+  (switch-to-buffer (cdr x)))
+
+(defun counsel-ibuffer-visit-buffer-other-window (x)
+  "Switch to buffer of candidate X in another window."
+  (switch-to-buffer-other-window (cdr x)))
+
+(defun counsel-ibuffer-visit-ibuffer (_)
+  "Switch to Ibuffer buffer."
+  (switch-to-buffer counsel-ibuffer--buffer-name))
+
+(ivy-set-actions
+ 'counsel-ibuffer
+ '(("j" counsel-ibuffer-visit-buffer-other-window "other window")
+   ("v" counsel-ibuffer-visit-ibuffer "switch to Ibuffer")))
+
+;;** `counsel-switch-to-shell-buffer'
+(defun counsel--buffers-with-mode (mode)
+  "Return names of buffers with MODE as their `major-mode'."
+  (let (bufs)
+    (dolist (buf (buffer-list))
+      (when (eq (buffer-local-value 'major-mode buf) mode)
+        (push (buffer-name buf) bufs)))
+    (nreverse bufs)))
+
+(declare-function shell-mode "shell")
+
+;;;###autoload
+(defun counsel-switch-to-shell-buffer ()
+  "Switch to a shell buffer, or create one."
+  (interactive)
+  (ivy-read "Shell buffer: " (counsel--buffers-with-mode #'shell-mode)
+            :action #'counsel--switch-to-shell
+            :caller 'counsel-switch-to-shell-buffer))
+
+(defun counsel--switch-to-shell (name)
+  "Display shell buffer with NAME and select its window.
+Reuse any existing window already displaying the named buffer.
+If there is no such buffer, start a new `shell' with NAME."
+  (if (get-buffer name)
+      (pop-to-buffer name '((display-buffer-reuse-window
+                             display-buffer-same-window)
+                            (inhibit-same-window . nil)
+                            (reusable-frames . visible)))
+    (shell name)))
+
+;;** `counsel-unicode-char'
+(defvar counsel-unicode-char-history nil
+  "History for `counsel-unicode-char'.")
+
+(defun counsel--unicode-names ()
+  "Return formatted and sorted list of `ucs-names'.
+The result of `ucs-names' is mostly, but not completely, sorted,
+so this function ensures lexicographic order."
+  (let* (cands
+         (table (ucs-names))            ; Either hash map or alist
+         (fmt   (lambda (name code)     ; Common format function
+                  (push (propertize (format "%06X %-58s %c" code name code)
+                                    'code code)
+                        cands))))
+    (if (not (hash-table-p table))
+        ;; Support `ucs-names' returning an alist in Emacs < 26.
+        ;; The result of `ucs-names' comes pre-reversed so no need to repeat.
+        (dolist (entry table)
+          (funcall fmt (car entry) (cdr entry)))
+      (maphash fmt table)
+      ;; Reverse to speed up sorting
+      (setq cands (nreverse cands)))
+    (sort cands #'string-lessp)))
+
+(defvar counsel--unicode-table
+  (lazy-completion-table counsel--unicode-table counsel--unicode-names)
+  "Lazy completion table for `counsel-unicode-char'.
+Candidates comprise `counsel--unicode-names', which see.")
+
+;;;###autoload
+(defun counsel-unicode-char (&optional count)
+  "Insert COUNT copies of a Unicode character at point.
+COUNT defaults to 1."
+  (interactive "p")
+  (let ((ivy-sort-max-size (expt 256 6)))
+    (setq ivy-completion-beg (point))
+    (setq ivy-completion-end (point))
+    (ivy-read "Unicode name: " counsel--unicode-table
+              :action (lambda (name)
+                        (with-ivy-window
+                          (delete-region ivy-completion-beg ivy-completion-end)
+                          (setq ivy-completion-beg (point))
+                          (insert-char (get-text-property 0 'code name) count)
+                          (setq ivy-completion-end (point))))
+              :history 'counsel-unicode-char-history
+              :caller 'counsel-unicode-char
+              :sort t)))
+
+;;** `counsel-colors'
+(defun counsel-colors-action-insert-hex (color)
+  "Insert the hexadecimal RGB value of COLOR."
+  (insert (get-text-property 0 'hex color)))
+
+(defun counsel-colors-action-kill-hex (color)
+  "Kill the hexadecimal RGB value of COLOR."
+  (kill-new (get-text-property 0 'hex color)))
+
+;;** `counsel-colors-emacs'
+(defvar counsel-colors-emacs-history ()
+  "History for `counsel-colors-emacs'.")
+
+(defun counsel-colors--name-to-hex (name)
+  "Return hexadecimal RGB value of color with NAME."
+  (apply #'color-rgb-to-hex (color-name-to-rgb name)))
+
+(defvar shr-color-visible-luminance-min)
+(declare-function shr-color-visible "shr-color")
+
+(defun counsel-colors--formatter (formatter)
+  "Turn FORMATTER into format function for `counsel-colors-*'.
+Return closure suitable for `ivy-format-function'."
+  (require 'shr-color)
+  (lambda (colors)
+    (ivy--format-function-generic
+     (lambda (color)
+       (let* ((hex (get-text-property 0 'hex color))
+              (shr-color-visible-luminance-min 100)
+              (fg (cadr (shr-color-visible hex "black" t))))
+         (propertize (funcall formatter color)
+                     'face (list :foreground fg :background hex))))
+     formatter colors "\n")))
+
+;;;###autoload
+(defun counsel-colors-emacs ()
+  "Show a list of all supported colors for a particular frame.
+
+You can insert or kill the name or hexadecimal RGB value of the
+selected color."
+  (interactive)
+  (let* ((colors (mapcar (lambda (cell)
+                           (let ((name (car cell)))
+                             (propertize name
+                                         'hex (counsel-colors--name-to-hex name)
+                                         'dups (cdr cell))))
+                         (list-colors-duplicates)))
+         (fmt (format "%%-%ds %%s %%s%%s"
+                      (apply #'max 0 (mapcar #'string-width colors))))
+         (blank (make-string 10 ?\s))
+         (ivy-format-function
+          (counsel-colors--formatter
+           (lambda (color)
+             (let ((fg (list :foreground color)))
+               (format fmt color
+                       (propertize (get-text-property 0 'hex color) 'face fg)
+                       (propertize blank 'face (list :background color))
+                       (propertize (mapconcat (lambda (dup)
+                                                (concat " " dup))
+                                              (get-text-property 0 'dups color)
+                                              ",")
+                                   'face fg)))))))
+    (ivy-read "Emacs color: " colors
+              :require-match t
+              :history 'counsel-colors-emacs-history
+              :action #'insert
+              :caller 'counsel-colors-emacs)))
+
+(ivy-set-actions
+ 'counsel-colors-emacs
+ '(("h" counsel-colors-action-insert-hex "insert hexadecimal value")
+   ("H" counsel-colors-action-kill-hex "kill hexadecimal value")))
+
+;;** `counsel-colors-web'
+(defvar shr-color-html-colors-alist)
+
+(defun counsel-colors--web-alist ()
+  "Return list of CSS colours for `counsel-colors-web'."
+  (require 'shr-color)
+  (let* ((alist (copy-alist shr-color-html-colors-alist))
+         (mp  (assoc "MediumPurple"  alist))
+         (pvr (assoc "PaleVioletRed" alist))
+         (rp  (assoc "RebeccaPurple" alist)))
+    ;; Backport GNU Emacs bug#30377
+    (when mp (setcdr mp "#9370db"))
+    (when pvr (setcdr pvr "#db7093"))
+    (unless rp (push (cons "rebeccapurple" "#663399") alist))
+    (sort (mapcar (lambda (cell)
+                    (propertize (downcase (car cell))
+                                'hex (downcase (cdr cell))))
+                  alist)
+          #'string-lessp)))
+
+(defvar counsel-colors-web-history ()
+  "History for `counsel-colors-web'.")
+
+;;;###autoload
+(defun counsel-colors-web ()
+  "Show a list of all W3C web colors for use in CSS.
+
+You can insert or kill the name or hexadecimal RGB value of the
+selected color."
+  (interactive)
+  (let* ((colors (counsel-colors--web-alist))
+         (blank (make-string 10 ?\s))
+         (fmt (format "%%-%ds %%s %%s"
+                      (apply #'max 0 (mapcar #'string-width colors))))
+         (ivy-format-function
+          (counsel-colors--formatter
+           (lambda (color)
+             (let ((hex (get-text-property 0 'hex color)))
+               (format fmt color
+                       (propertize hex 'face (list :foreground hex))
+                       (propertize blank 'face (list :background hex))))))))
+    (ivy-read "Web color: " colors
+              :require-match t
+              :history 'counsel-colors-web-history
+              :sort t
+              :action #'insert
+              :caller 'counsel-colors-web)))
+
+(ivy-set-actions
+ 'counsel-colors-web
+ '(("h" counsel-colors-action-insert-hex "insert hexadecimal value")
+   ("H" counsel-colors-action-kill-hex "kill hexadecimal value")))
+
+;;* Misc. OS
+;;** `counsel-rhythmbox'
+(declare-function dbus-call-method "dbus")
+(declare-function dbus-get-property "dbus")
+
+(defun counsel-rhythmbox-play-song (song)
+  "Let Rhythmbox play SONG."
+  (let ((service "org.gnome.Rhythmbox3")
+        (path "/org/mpris/MediaPlayer2")
+        (interface "org.mpris.MediaPlayer2.Player"))
+    (dbus-call-method :session service path interface
+                      "OpenUri" (cdr song))))
+
+(defun counsel-rhythmbox-enqueue-song (song)
+  "Let Rhythmbox enqueue SONG."
+  (let ((service "org.gnome.Rhythmbox3")
+        (path "/org/gnome/Rhythmbox3/PlayQueue")
+        (interface "org.gnome.Rhythmbox3.PlayQueue"))
+    (dbus-call-method :session service path interface
+                      "AddToQueue" (cdr song))))
+
+(defvar counsel-rhythmbox-history nil
+  "History for `counsel-rhythmbox'.")
+
+(defvar counsel-rhythmbox-songs nil)
+
+(defun counsel-rhythmbox-current-song ()
+  "Return the currently playing song title."
+  (ignore-errors
+    (let* ((entry (dbus-get-property
+                   :session
+                   "org.mpris.MediaPlayer2.rhythmbox"
+                   "/org/mpris/MediaPlayer2"
+                   "org.mpris.MediaPlayer2.Player"
+                   "Metadata"))
+           (artist (caar (cadr (assoc "xesam:artist" entry))))
+           (album (cl-caadr (assoc "xesam:album" entry)))
+           (title (cl-caadr (assoc "xesam:title" entry))))
+      (format "%s - %s - %s" artist album title))))
+
+;;;###autoload
+(defun counsel-rhythmbox ()
+  "Choose a song from the Rhythmbox library to play or enqueue."
+  (interactive)
+  (require 'dbus)
+  (unless counsel-rhythmbox-songs
+    (let* ((service "org.gnome.Rhythmbox3")
+           (path "/org/gnome/UPnP/MediaServer2/Library/all")
+           (interface "org.gnome.UPnP.MediaContainer2")
+           (nb-songs (dbus-get-property
+                      :session service path interface "ChildCount")))
+      (if (not nb-songs)
+          (error "Couldn't connect to Rhythmbox")
+        (setq counsel-rhythmbox-songs
+              (mapcar (lambda (x)
+                        (cons
+                         (format
+                          "%s - %s - %s"
+                          (cl-caadr (assoc "Artist" x))
+                          (cl-caadr (assoc "Album" x))
+                          (cl-caadr (assoc "DisplayName" x)))
+                         (cl-caaadr (assoc "URLs" x))))
+                      (dbus-call-method
+                       :session service path interface "ListChildren"
+                       0 nb-songs '("*")))))))
+  (ivy-read "Rhythmbox: " counsel-rhythmbox-songs
+            :history 'counsel-rhythmbox-history
+            :preselect (counsel-rhythmbox-current-song)
+            :action
+            '(1
+              ("p" counsel-rhythmbox-play-song "Play song")
+              ("e" counsel-rhythmbox-enqueue-song "Enqueue song"))
+            :caller 'counsel-rhythmbox))
+
+;;** `counsel-linux-app'
+(defcustom counsel-linux-apps-directories
+  '("~/.local/share/applications/"
+    "~/.guix-profile/share/applications/"
+    "/usr/local/share/applications/"
+    "/usr/share/applications/")
+  "Directories in which to search for applications (.desktop files)."
+  :group 'ivy
+  :type '(repeat directory))
+
+(defcustom counsel-linux-app-format-function #'counsel-linux-app-format-function-default
+  "Function to format Linux application names the `counsel-linux-app' menu.
+The format function will be passed the application's name, comment, and command
+as arguments."
+  :group 'ivy
+  :type '(choice
+          (const :tag "Command : Name - Comment" counsel-linux-app-format-function-default)
+          (const :tag "Name - Comment (Command)" counsel-linux-app-format-function-name-first)
+          (const :tag "Name - Comment" counsel-linux-app-format-function-name-only)
+          (const :tag "Command" counsel-linux-app-format-function-command-only)
+          (function :tag "Custom")))
+
+(defvar counsel-linux-apps-faulty nil
+  "List of faulty desktop files.")
+
+(defvar counsel--linux-apps-cache nil
+  "Cache of desktop files data.")
+
+(defvar counsel--linux-apps-cached-files nil
+  "List of cached desktop files.")
+
+(defvar counsel--linux-apps-cache-timestamp nil
+  "Time when we last updated the cached application list.")
+
+(defvar counsel--linux-apps-cache-format-function nil
+  "The function used to format the cached Linux application menu.")
+
+(defun counsel-linux-app-format-function-default (name comment exec)
+  "Default Linux application name formatter.
+NAME is the name of the application, COMMENT its comment and EXEC
+the command to launch it."
+  (format "% -45s: %s%s"
+          (propertize exec 'face 'font-lock-builtin-face)
+          name
+          (if comment
+              (concat " - " comment)
+            "")))
+
+(defun counsel-linux-app-format-function-name-first (name comment exec)
+  "Format Linux application names with the NAME (and COMMENT) first.
+EXEC is the command to launch the application."
+  (format "%s%s (%s)"
+          name
+          (if comment
+              (concat " - " comment)
+            "")
+          (propertize exec 'face 'font-lock-builtin-face)))
+
+(defun counsel-linux-app-format-function-name-only (name comment _exec)
+  "Format Linux application names with the NAME (and COMMENT) only."
+  (format "%s%s"
+          name
+          (if comment
+              (concat " - " comment)
+            "")))
+
+(defun counsel-linux-app-format-function-command-only (_name _comment exec)
+  "Display only the command EXEC when formatting Linux application names."
+  exec)
+
+(defun counsel-linux-apps-list-desktop-files ()
+  "Return an alist of all Linux applications.
+Each list entry is a pair of (desktop-name . desktop-file).
+This function always returns its elements in a stable order."
+  (let ((hash (make-hash-table :test #'equal))
+        result)
+    (dolist (dir counsel-linux-apps-directories)
+      (when (file-exists-p dir)
+        (let ((dir (file-name-as-directory dir)))
+          (dolist (file (directory-files-recursively dir ".*\\.desktop$"))
+            (let ((id (subst-char-in-string ?/ ?- (file-relative-name file dir))))
+              (unless (gethash id hash)
+                (push (cons id file) result)
+                (puthash id file hash)))))))
+    result))
+
+(defun counsel-linux-apps-parse (desktop-entries-alist)
+  "Parse the given alist of Linux desktop entries.
+Each entry in DESKTOP-ENTRIES-ALIST is a pair of ((id . file-name)).
+Any desktop entries that fail to parse are recorded in
+`counsel-linux-apps-faulty'."
+  (let (result)
+    (setq counsel-linux-apps-faulty nil)
+    (dolist (entry desktop-entries-alist result)
+      (let ((id (car entry))
+            (file (cdr entry)))
+        (with-temp-buffer
+          (insert-file-contents file)
+          (goto-char (point-min))
+          (let ((start (re-search-forward "^\\[Desktop Entry\\] *$" nil t))
+                (end (re-search-forward "^\\[" nil t))
+                name comment exec)
+            (catch 'break
+              (unless start
+                (push file counsel-linux-apps-faulty)
+                (message "Warning: File %s has no [Desktop Entry] group" file)
+                (throw 'break nil))
+
+              (goto-char start)
+              (when (re-search-forward "^\\(Hidden\\|NoDisplay\\) *= *\\(1\\|true\\) *$" end t)
+                (throw 'break nil))
+              (setq name (match-string 1))
+
+              (goto-char start)
+              (unless (re-search-forward "^Type *= *Application *$" end t)
+                (throw 'break nil))
+              (setq name (match-string 1))
+
+              (goto-char start)
+              (unless (re-search-forward "^Name *= *\\(.+\\)$" end t)
+                (push file counsel-linux-apps-faulty)
+                (message "Warning: File %s has no Name" file)
+                (throw 'break nil))
+              (setq name (match-string 1))
+
+              (goto-char start)
+              (when (re-search-forward "^Comment *= *\\(.+\\)$" end t)
+                (setq comment (match-string 1)))
+
+              (goto-char start)
+              (unless (re-search-forward "^Exec *= *\\(.+\\)$" end t)
+                ;; Don't warn because this can technically be a valid desktop file.
+                (throw 'break nil))
+              (setq exec (match-string 1))
+
+              (goto-char start)
+              (when (re-search-forward "^TryExec *= *\\(.+\\)$" end t)
+                (let ((try-exec (match-string 1)))
+                  (unless (locate-file try-exec exec-path nil #'file-executable-p)
+                    (throw 'break nil))))
+
+              (push
+               (cons (funcall counsel-linux-app-format-function name comment exec) id)
+               result))))))))
+
+(defun counsel-linux-apps-list ()
+  "Return list of all Linux desktop applications."
+  (let* ((new-desktop-alist (counsel-linux-apps-list-desktop-files))
+         (new-files (mapcar 'cdr new-desktop-alist)))
+    (unless (and
+             (eq counsel-linux-app-format-function
+                 counsel--linux-apps-cache-format-function)
+             (equal new-files counsel--linux-apps-cached-files)
+             (null (cl-find-if
+                    (lambda (file)
+                      (time-less-p
+                       counsel--linux-apps-cache-timestamp
+                       (nth 5 (file-attributes file))))
+                    new-files)))
+      (setq counsel--linux-apps-cache (counsel-linux-apps-parse new-desktop-alist)
+            counsel--linux-apps-cache-format-function counsel-linux-app-format-function
+            counsel--linux-apps-cache-timestamp (current-time)
+            counsel--linux-apps-cached-files new-files)))
+  counsel--linux-apps-cache)
+
+
+(defun counsel-linux-app-action-default (desktop-shortcut)
+  "Launch DESKTOP-SHORTCUT."
+  (call-process "gtk-launch" nil 0 nil (cdr desktop-shortcut)))
+
+(defun counsel-linux-app-action-file (desktop-shortcut)
+  "Launch DESKTOP-SHORTCUT with a selected file."
+  (call-process "gtk-launch" nil 0 nil
+                (cdr desktop-shortcut)
+                (read-file-name "File: ")))
+
+(defun counsel-linux-app-action-open-desktop (desktop-shortcut)
+  "Open DESKTOP-SHORTCUT."
+  (let* ((app (cdr desktop-shortcut))
+         (file (cdr (assoc app (counsel-linux-apps-list-desktop-files)))))
+    (if file
+        (find-file file)
+      (error "Could not find location of file %s" app))))
+
+(ivy-set-actions
+ 'counsel-linux-app
+ '(("f" counsel-linux-app-action-file "run on a file")
+   ("d" counsel-linux-app-action-open-desktop "open desktop file")))
+
+;;;###autoload
+(defun counsel-linux-app ()
+  "Launch a Linux desktop application, similar to Alt-<F2>."
+  (interactive)
+  (ivy-read "Run a command: " (counsel-linux-apps-list)
+            :action #'counsel-linux-app-action-default
+            :caller 'counsel-linux-app))
+
+;;** `counsel-wmctrl'
+(defun counsel-wmctrl-action (x)
+  "Select the desktop window that corresponds to X."
+  (shell-command
+   (format "wmctrl -i -a \"%s\"" (cdr x))))
+
+(defvar counsel-wmctrl-ignore '("XdndCollectionWindowImp"
+                                "unity-launcher" "unity-panel" "unity-dash"
+                                "Hud" "Desktop")
+  "List of window titles to ignore for `counsel-wmctrl'.")
+
+(defun counsel-wmctrl ()
+  "Select a desktop window using wmctrl."
+  (interactive)
+  (let* ((cands1 (split-string (shell-command-to-string "wmctrl -l") "\n" t))
+         (cands2
+          (mapcar (lambda (s)
+                    (when (string-match
+                           "\\`\\([0-9a-fx]+\\)  \\([0-9]+\\) \\([^ ]+\\) \\(.+\\)\\'"
+                           s)
+                      (let ((title (match-string 4 s))
+                            (id (match-string 1 s)))
+                        (unless (member title counsel-wmctrl-ignore)
+                          (cons title id)))))
+                  cands1)))
+    (ivy-read "window: " cands2
+              :action #'counsel-wmctrl-action
+              :caller 'counsel-wmctrl)))
+
+;;* `counsel-mode'
+(defvar counsel-mode-map
+  (let ((map (make-sparse-keymap)))
+    (dolist (binding
+              '((execute-extended-command . counsel-M-x)
+                (describe-bindings . counsel-descbinds)
+                (describe-function . counsel-describe-function)
+                (describe-variable . counsel-describe-variable)
+                (describe-face . counsel-describe-face)
+                (list-faces-display . counsel-faces)
+                (find-file . counsel-find-file)
+                (find-library . counsel-find-library)
+                (imenu . counsel-imenu)
+                (load-library . counsel-load-library)
+                (load-theme . counsel-load-theme)
+                (yank-pop . counsel-yank-pop)
+                (info-lookup-symbol . counsel-info-lookup-symbol)
+                (pop-to-mark-command . counsel-mark-ring)
+                (bookmark-jump . counsel-bookmark)))
+      (define-key map (vector 'remap (car binding)) (cdr binding)))
+    map)
+  "Map for `counsel-mode'.
+Remaps built-in functions to counsel replacements.")
+
+(defcustom counsel-mode-override-describe-bindings nil
+  "Whether to override `describe-bindings' when `counsel-mode' is active."
+  :group 'ivy
+  :type 'boolean)
+
+;;;###autoload
+(define-minor-mode counsel-mode
+  "Toggle Counsel mode on or off.
+Turn Counsel mode on if ARG is positive, off otherwise. Counsel
+mode remaps built-in emacs functions that have counsel
+replacements. "
+  :group 'ivy
+  :global t
+  :keymap counsel-mode-map
+  :lighter " counsel"
+  (if counsel-mode
+      (progn
+        (when (and (fboundp 'advice-add)
+                   counsel-mode-override-describe-bindings)
+          (advice-add #'describe-bindings :override #'counsel-descbinds))
+        (define-key minibuffer-local-map (kbd "C-r")
+          'counsel-minibuffer-history))
+    (when (fboundp 'advice-remove)
+      (advice-remove #'describe-bindings #'counsel-descbinds))))
+
+(provide 'counsel)
+
+;;; counsel.el ends here