enable persistent undo in emacs

[~bandali/configs] / spacemacs / .spacemacs

;; -*- mode: dotspacemacs -*-
;; This file is loaded by Spacemacs at startup.
;; It must be stored in your home directory.

(defun dotspacemacs/layers ()
  "Configuration Layers declaration."
  (setq-default
   ;; List of additional paths where to look for configuration layers.
   ;; Paths must have a trailing slash (ie. `~/.mycontribs/')
   dotspacemacs-configuration-layer-path '()
   ;; List of configuration layers to load. If it is the symbol `all' instead
   ;; of a list then all discovered layers will be installed.
   dotspacemacs-configuration-layers '(mu4e evil git c-c++ auctex html clojure)
   ;; A list of packages and/or extensions that will not be install and loaded.
   dotspacemacs-excluded-packages '()
   ;; If non-nil spacemacs will delete any orphan packages, i.e. packages that
   ;; are declared in a layer which is not a member of
   ;; the list `dotspacemacs-configuration-layers'
   dotspacemacs-delete-orphan-packages t))

(defun dotspacemacs/init ()
  "Initialization function.
This function is called at the very startup of Spacemacs initialization
before layers configuration."
  ;; This setq-default sexp is an exhaustive list of all the supported
  ;; spacemacs settings.
  (setq-default
   ;; Specify the startup banner. If the value is an integer then the
   ;; banner with the corresponding index is used, if the value is `random'
   ;; then the banner is chosen randomly among the available banners, if
   ;; the value is nil then no banner is displayed.
   dotspacemacs-startup-banner 001
   ;; List of themes, the first of the list is loaded when spacemacs starts.
   ;; Press <SPC> T n to cycle to the next theme in the list (works great
   ;; with 2 themes variants, one dark and one light)
   dotspacemacs-themes '(zenburn)
   ;; If non nil the cursor color matches the state color.
   dotspacemacs-colorize-cursor-according-to-state t
   ;; Default font. `powerline-scale' allows to quickly tweak the mode-line
   ;; size to make separators look not too crappy.
   dotspacemacs-default-font '("Source Code Pro for Powerline"
                               :size 14
                               :weight normal
                               :width normal
                               :powerline-scale 1.1)
   ;; The leader key
   dotspacemacs-leader-key "SPC"
   ;; Major mode leader key is a shortcut key which is the equivalent of
   ;; pressing `<leader> m`
   dotspacemacs-major-mode-leader-key ","
   ;; The command key used for Evil commands (ex-commands) and
   ;; Emacs commands (M-x).
   ;; By default the command key is `:' so ex-commands are executed like in Vim
   ;; with `:' and Emacs commands are executed with `<leader> :'.
   dotspacemacs-command-key ":"
   ;; Guide-key delay in seconds. The Guide-key is the popup buffer listing
   ;; the commands bound to the current keystrokes.
   dotspacemacs-guide-key-delay 0.4
   ;; If non nil a progress bar is displayed when spacemacs is loading. This
   ;; may increase the boot time on some systems and emacs builds, set it to
   ;; nil ;; to boost the loading time.
   dotspacemacs-loading-progress-bar t
   ;; If non nil the frame is fullscreen when Emacs starts up.
   ;; (Emacs 24.4+ only)
   dotspacemacs-fullscreen-at-startup nil
   ;; If non nil `spacemacs/toggle-fullscreen' will not use native fullscreen.
   ;; Use to disable fullscreen animations in OSX."
   dotspacemacs-fullscreen-use-non-native nil
   ;; If non nil the frame is maximized when Emacs starts up.
   ;; Takes effect only if `dotspacemacs-fullscreen-at-startup' is nil.
   ;; (Emacs 24.4+ only)
   dotspacemacs-maximized-at-startup nil
   ;; A value from the range (0..100), in increasing opacity, which describes
   ;; the transparency level of a frame when it's active or selected.
   ;; Transparency can be toggled through `toggle-transparency'.
   dotspacemacs-active-transparency 90
   ;; A value from the range (0..100), in increasing opacity, which describes
   ;; the transparency level of a frame when it's inactive or deselected.
   ;; Transparency can be toggled through `toggle-transparency'.
   dotspacemacs-inactive-transparency 90
   ;; If non nil unicode symbols are displayed in the mode line.
   dotspacemacs-mode-line-unicode-symbols t
   ;; If non nil smooth scrolling (native-scrolling) is enabled. Smooth
   ;; scrolling overrides the default behavior of Emacs which recenters the
   ;; point when it reaches the top or bottom of the screen.
   dotspacemacs-smooth-scrolling t
   ;; If non-nil smartparens-strict-mode will be enabled in programming modes.
   dotspacemacs-smartparens-strict-mode nil
   ;; If non nil advises quit functions to keep server open when quitting.
   dotspacemacs-persistent-server nil
   ;; The default package repository used if no explicit repository has been
   ;; specified with an installed package.
   ;; Not used for now.
   dotspacemacs-default-package-repository nil
   ;; Disable setting the cursor color according to states
   dotspacemacs-colorize-cursor-according-to-state nil)
  ;; User initialization goes here
  )

(defun dotspacemacs/config ()
  "Configuration function.
 This function is called at the very end of Spacemacs initialization after
layers configuration."
  (setq powerline-default-separator nil)
  (setq TeX-PDF-mode t
        Tex-command-default 'TeX)
  (setq undo-tree-auto-save-history t
        undo-tree-history-directory-alist
        `(("." . ,(concat spacemacs-cache-directory "undo"))))
  (unless (file-exists-p (concat spacemacs-cache-directory "undo"))
    (make-directory (concat spacemacs-cache-directory "undo")))

  (setq TeX-view-program-selection
        '(((output-dvi style-pstricks)
          "dvips and gv")
         (output-dvi "xdvi")
         (output-pdf "zathura")
         (output-html "xdg-open")))

  (setq TeX-view-program-list
        '(("zathura"
           ("zathura" (mode-io-correlate "-sync.sh")
            " "
            (mode-io-correlate "%n:1:%t ")
            "%o"))))
)

;; Do not write anything past this comment. This is where Emacs will
;; auto-generate custom variable definitions.


(custom-set-variables
 ;; custom-set-variables was added by Custom.
 ;; If you edit it by hand, you could mess it up, so be careful.
 ;; Your init file should contain only one such instance.
 ;; If there is more than one, they won't work right.
 '(ac-ispell-requires 4)
 '(ahs-case-fold-search nil)
 '(ahs-default-range (quote ahs-range-whole-buffer))
 '(ahs-idle-interval 0.25)
 '(ahs-idle-timer 0 t)
 '(ahs-inhibit-face-list nil)
 '(ring-bell-function (quote ignore) t)
 '(send-mail-function (quote smtpmail-send-it)))
(custom-set-faces
 ;; custom-set-faces was added by Custom.
 ;; If you edit it by hand, you could mess it up, so be careful.
 ;; Your init file should contain only one such instance.
 ;; If there is more than one, they won't work right.
 )