:type 'boolean

  :group 'workgroups)

;;; vars

(defvar wg-workgroups-mode-minor-mode-map-entry nil

  "Workgroups' minor-mode-map entry.")

(defvar wg-wconfig-kill-ring nil

  "Ring of killed or kill-ring-saved wconfigs.")

(defvar wg-last-message nil

  "Holds the last message Workgroups sent to the echo area.")

(defvar wg-buffer-uid nil

  "Symbol for the current buffer's wg-buf's uid.

Every Workgroups buffer object (wg-buf) has a uid.  When

Workgroups creates or encounters an Emacs buffer object

corresponding to a wg-buf, it tags it with the wg-buf's uid to

unambiguously pair the two.")

(make-variable-buffer-local 'wg-buffer-uid)

;; file and modified flag vars

(defvar wg-flag-modified t

  "Dynamically bound to nil around destructive operations to

temporarily disable flagging `modified'.")

;; undo vars

(defvar wg-window-configuration-changed nil

  "Flag set by `window-configuration-change-hook'.")

(defvar wg-already-updated-working-wconfig nil

  "Flag set by `wg-update-working-wconfig-hook'.")

(defvar wg-undoify-window-configuration-change t

  "Flag unset when changes to the window config shouldn't cause

workgroups' undo info to be updated.")

(defvar wg-current-workgroup nil "Bound to the current workgroup.")

;; wconfig restoration

(defvar wg-window-min-width 2

(defvar wg-window-min-height 1

  "Bound to `window-min-height' when restoring wtrees.")

(defvar wg-window-min-pad 2

  "Added to `wg-window-min-foo' to produce the actual minimum window size.")

(defvar wg-actual-min-width (+ wg-window-min-width wg-window-min-pad)

  "Actual minimum window width when creating windows.")

(defvar wg-actual-min-height (+ wg-window-min-height wg-window-min-pad)

  "Actual minimum window height when creating windows.")

(defvar wg-min-edges `(0 0 ,wg-actual-min-width ,wg-actual-min-height)

  "Smallest allowable edge list of windows created by Workgroups.")

(defvar wg-null-edges '(0 0 0 0) "Null edge list.")

(defvar wg-window-tree-selected-window nil

  "Used during wconfig restoration to hold the selected window.")

(defvar wg-update-current-workgroup-working-wconfig-on-select-frame t

  "Non-nil means update `selected-frame's current workgroup's

working wconfig before `select-frame' selects a new frame.

let-bind this to nil around forms in which you don't want this to

happen.")

;; Remove after some time

(defalias 'wg-switch-to-buffer 'switch-to-buffer)

;;

;; Crazy stuff...

;;

(defcustom wg-associate-blacklist (list "*helm mini*" "*Messages*" "*scratch*"

                                        "*helm action*")

  "Do not autoassociate these buffers."

  :type 'list

  :group 'workgroups)

(defconst wg-buffer-list-original (symbol-function 'buffer-list))

(defun buffer-list (&optional frame)

  "Redefinition of `buffer-list'.

Pass FRAME to it.

Remove file and dired buffers that are not associated with workgroup."

  (let ((lst (list))

        (res (wg-buffer-list-emacs frame))