;; 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.