我的.emacs

;;================================

;; this is .emacs

;;================================

 

  (setq load-path (cons (expand-file-name "~/.emacs.d/") load-path))
  (require 'etheme)
  (global-set-key "/M-g" 'goto-line)
  (global-set-key "/M-s" 'find-tag)
   

(setq frame-title-format "%S: %f")

(custom-set-variables
  ;; custom-set-variables was added by Custom -- don't edit or cut/paste it!
  ;; Your init file should contain only one such instance.
 '(c-basic-offset 4)
 '(case-fold-search t)
 '(current-language-environment "UTF-8")
 '(default-input-method "rfc1345")
 '(tool-bar-mode)
 '(column-number-mode)
 '(global-font-lock-mode t nil (font-lock)))
(custom-set-faces
  ;; custom-set-faces was added by Custom -- don't edit or cut/paste it!
  ;; Your init file should contain only one such instance.
 
)

 

 

;;============================

;; this is .emacs.d/etheme.el

;;============================

 

;;; etheme.el --- Theme support in emacs

;;;
;;; Copyright (C) 2005  Seong-Kook Shin <[e-mail]>
;;;

;;; This program is free software; you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 2 of the License, or
;;; (at your option) any later version.
;;;
;;; This program is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with this program; if not, write to the Free Software
;;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
;;;

;;;
;;; $Id: etheme.el,v 1.5 2005/06/24 23:59:40 cinsk Exp $
;;;

(eval-when-compile
  (require 'cl))

(defgroup etheme nil
  "Provide alternative theme-style face color configuration"
  :version "22.0"
  :group 'Faces)

(defvar etheme-current-theme
  nil
  "Current theme name")

(defvar etheme-set-theme-hook
  nil
  "Hook function called before applying any theme.")

(defvar etheme-alist
  '(("cinsk" 1)
    ("vim" 2)
    ("elflord" 3)
    ("morning" 4)
    ("canyon" 5)
    ("blue" 6)
    ("darkblue" 7)
    ("desert" 8)
    )
  "Installed etheme name alist")

;;;
;;; Default values of White on Black
;;;
;;; modeline black on grey75
;;; modeline-inactive grey80 on grey30
;;; isearch brown4 on palevioletred2
;;; font-lock-comment-face chocolate1 on unspecified
;;; font-lock-constant-face Aquamarine on unspecified
;;; font-lock-type-face PaleGreen on unspecified
;;; font-lock-variable-name-face LightGoldenrod on unspecified
;;; font-lock-function-name-face LightSkyBlue on unspecified
;;; font-lock-preprocessor-face unspecified on unspecified
;;; font-lock-string-face LightSalmon on unspecified
;;; font-lock-keyword-face Cyan1 on unspecified
;;;

;;;
;;; Default values of Black on White
;;;
;;; modeline black on grey75
;;; modeline-inactive grey20 on grey90
;;; isearch lightskyblue1 on magenta2
;;; font-lock-comment-face firebrick on unspecified
;;; font-lock-constant-face CadetBlue on unspecified
;;; font-lock-type-face ForestGreen on unspecified
;;; font-lock-variable-name-face DarkGoldenrod on unspecified
;;; font-lock-function-name-face Blue1 on unspecified
;;; font-lock-preprocessor-face unspecified on unspecified
;;; font-lock-string-face RosyBrown on unspecified
;;; font-lock-keyword-face Purple on unspecified
;;;

;;;
;;; DO NOT SET ANY ATTRIBUTE ON THESE FACES.
;;;
;;;  font-lock-comment-delimiter-face unspecified on unspecified
;;;  font-lock-doc-face unspecified on unspecified
;;;  font-lock-negation-char-face unspecified on unspecified
;;;  font-lock-regexp-backslash unspecified on unspecified
;;;  font-lock-regexp-backslash-construct unspecified on unspecified
;;;  font-lock-warning-face Red1 on unspecified

(defvar etheme-saved-face-list
  '(modeline
    modeline-inactive
    isearch
    font-lock-builtin-face
    font-lock-comment-face
    font-lock-constant-face
    font-lock-type-face
    font-lock-variable-name-face
    font-lock-function-name-face
    font-lock-preprocessor-face
    font-lock-string-face
    font-lock-keyword-face)
  "List of face names which will be stored between theme change."
  )

        
(defvar etheme-cinsk-faces
  '((default :foreground "powder blue" :background "black")
    (modeline :foreground "white" :background "IndianRed4")
    (modeline-inactive :foreground "grey80" :background "gray30")
    (isearch :foreground "brown4" :background "palevioletred2")
    ;; (font-lock-builtin-face :foreground "DarkGoldenrod4")
    (font-lock-comment-face :foreground "chocolate1")
    (font-lock-constant-face :foreground "Aquamarine")
    (font-lock-type-face :foreground "PaleGreen")
    (font-lock-variable-name-face :foreground "LightGoldenrod")
    (font-lock-function-name-face :foreground "LightSkyBlue")
    (font-lock-preprocessor-face :foreground unspecified)
    (font-lock-string-face :foreground "LightSalmon")
    (font-lock-keyword-face :foreground "Cyan1"))
  "cinsk style face attribute set")

(defvar etheme-cinsk-hook
  nil
  "Hook for cinsk theme")

(defvar etheme-canyon-faces
  '((default :foreground "grey30" :background "NavajoWhite2")
    (modeline :foreground "grey90" :background "chocolate2")
    (modeline-inactive :foreground "grey80" :background "chocolate4")
    (isearch :foreground "brown4" :background "palevioletred2")
    (font-lock-builtin-face :foreground "DarkGoldenrod4")
    (font-lock-comment-face :foreground "Firebrick")
    (font-lock-constant-face :foreground "purple4")
    (font-lock-type-face :foreground "aquamarine4")
    (font-lock-variable-name-face :foreground "cyan4")
    (font-lock-function-name-face :foreground "green4")
    (font-lock-preprocessor-face :foreground "IndianRed3")
    (font-lock-string-face :foreground "HotPink4")
    (font-lock-keyword-face :foreground "DarkOrange4")))

(defvar etheme-canyon-hook
  nil
  "Hook for canyon theme")

(defvar etheme-vim-faces
  '((default :foreground "gray" :background "black")
    (modeline :foreground "black" :background "gray75")
    (modeline-inactive :foreground "grey80" :background "gray30")
    (isearch :foreground "brown4" :background "palevioletred2")
    ;; (font-lock-builtin-face :foreground "DarkGoldenrod4")
    (font-lock-comment-face :foreground "RoyalBlue")
    (font-lock-constant-face :foreground "Aquamarine")
    (font-lock-type-face :foreground "green")
    (font-lock-variable-name-face :foreground "LightGoldenrod")
    (font-lock-function-name-face :foreground "LightSkyBlue")
    (font-lock-preprocessor-face :foreground "magenta")
    (font-lock-string-face :foreground "red")
    (font-lock-keyword-face :foreground "DarkOrange2"))
  "graphical version of vim style face attribute set")

(defvar etheme-vim-hook
  nil
  "Hook for vim theme")

(defvar etheme-elflord-faces
  '((default :foreground "cyan" :background "black")
    (modeline :foreground "black" :background "gray75")
    (modeline-inactive :foreground "grey80" :background "gray30")
    (isearch :foreground "brown4" :background "palevioletred2")
    ;; (font-lock-builtin-face :foreground "DarkGoldenrod4")
    (font-lock-comment-face :foreground "#80a0ff")
    (font-lock-constant-face :foreground "magenta")
    (font-lock-type-face :foreground "#60ff60")
    (font-lock-variable-name-face :foreground "#40ffff")
    (font-lock-function-name-face :foreground "white")
    (font-lock-preprocessor-face :foreground "#ff80ff")
    (font-lock-string-face :foreground "magenta")
    (font-lock-keyword-face :foreground "#aa4444"))
  "vim elflord-like face attribute set")

(defvar etheme-elflord-hook
  nil
  "Hook for elflord theme")

(defvar etheme-morning-faces
  '((default :foreground "black" :background "grey90")
    (modeline :foreground unspecified :background "LightBlue1")
    (modeline-inactive :foreground unspecified :background "LightBlue3")
    (isearch :foreground unspecified :background "yellow")
    ;; (font-lock-builtin-face :foreground "DarkGoldenrod4")
    (font-lock-comment-face :foreground "blue")
    (font-lock-constant-face :foreground "magenta")
    (font-lock-type-face :foreground "forest green")
    (font-lock-variable-name-face :foreground "blue4")
    (font-lock-function-name-face :foreground "sienna4")
    (font-lock-preprocessor-face :foreground "DarkViolet")
    (font-lock-string-face :foreground "magenta")
    (font-lock-keyword-face :foreground "SlateBlue"))
  "vim morning-like face attribute set")

(defvar etheme-morning-hook
  nil
  "Hook for morning theme")

(defvar etheme-blue-faces
  '((default :foreground "white" :background "navy")
    (modeline :foreground "black" :background "deep sky blue")
    (modeline-inactive :foreground "grey60" :background "navy")
    (isearch :foreground unspecified :background "yellow")
    (font-lock-builtin-face :foreground "yellow")
    (font-lock-comment-face :foreground "LightGrey")
    (font-lock-constant-face :foreground "cyan")
    (font-lock-type-face :foreground "yellow")
    (font-lock-variable-name-face :foreground "burlywood")
    (font-lock-function-name-face :foreground "beige")
    (font-lock-preprocessor-face :foreground "green")
    (font-lock-string-face :foreground "cyan")
    (font-lock-keyword-face :foreground "tomato"))
  "vim morning-like face attribute set")

(defvar etheme-blue-hook
  nil
  "Hook for blue theme")

(defvar etheme-darkblue-faces
  '((default :foreground "LightGrey" :background "#000040")
    (modeline :foreground "black" :background "deep sky blue")
    (modeline-inactive :foreground "grey60" :background "navy")
    (isearch :foreground unspecified :background "yellow")
    (font-lock-builtin-face :foreground "yellow")
    (font-lock-comment-face :foreground "#80a0ff")
    (font-lock-constant-face :foreground "cyan")
    (font-lock-type-face :foreground "#60ff60")
    (font-lock-variable-name-face :foreground "#40ffff")
    (font-lock-function-name-face :foreground "beige")
    (font-lock-preprocessor-face :foreground "#ff80ff")
    (font-lock-string-face :foreground "#ffa0a0")
    (font-lock-keyword-face :foreground "green"))
  "vim morning-like face attribute set")

(defvar etheme-darkblue-hook
  nil
  "Hook for darkblue theme")

(defvar etheme-desert-faces
  '((default :foreground "white" :background "grey20")
    (modeline :foreground "black" :background "deep sky blue")
    (modeline-inactive :foreground "grey20" :background "#c2bfa5")
    (isearch :foreground "slategrey" :background "khaki")
    (font-lock-builtin-face :foreground "yellow")
    (font-lock-comment-face :foreground "SkyBlue")
    (font-lock-constant-face :foreground "#ffa0a0")
    (font-lock-type-face :foreground "darkkhaki")
    (font-lock-variable-name-face :foreground "palegreen")
    (font-lock-function-name-face :foreground "beige")
    (font-lock-preprocessor-face :foreground "indianred")
    (font-lock-string-face :foreground "#ffa0a0")
    (font-lock-keyword-face :foreground "navajowhite"))
  "vim morning-like face attribute set")

(defvar etheme-desert-hook
  nil
  "Hook for darkblue theme")


(defun etheme-set-faces (theme)
  "Set the given face attribute set THEME"
  (mapcar #'(lambda (arg)
        (apply #'set-face-attribute
           (append (list (car arg) nil) (cdr arg))))
    theme))

(defun etheme-run-hook (theme-name)
  "Run THEME-NAME hook"
  (let ((hook-name (intern (concat "etheme-" theme-name "-hook"))))
    (run-hooks hook-name)))

(defun etheme-add-hook (theme-name function &optional append)
  "Add FUNCTION to the THEME-NAME hook"
  (let ((hook-name (intern (concat "etheme-" theme-name "-hook"))))
    (add-hook hook-name function append)))

(defun etheme-apply-theme (theme-name)
  "Set the current theme to THEME-NAME"
  (if (stringp theme-name)
      (let ((faces (eval (intern (concat "etheme-" theme-name "-faces")))))
    (setq etheme-current-theme theme-name)
    (etheme-run-hook theme-name)
    (etheme-set-faces faces)
    )))

(defun etheme-set-theme (theme-name)
  "Set the current theme to THEME-NAME"
  (interactive "P")
  (global-font-lock-mode 1)
  (let ((name theme-name))
    (if (stringp name)
    (etheme-apply-theme name)
      (progn (etheme-apply-theme
          (setq name (completing-read "theme name: "
                      etheme-alist nil t "")))
         (message "etheme: %s selected" name)))))

(etheme-add-hook "vim" 'menu-bar-right-scroll-bar)
(etheme-add-hook "vim" '(lambda () (tool-bar-mode 1)))
(etheme-add-hook "vim" '(lambda () (set-cursor-color "white")))
(etheme-add-hook "vim" '(lambda () (set-mouse-color "white")))

(etheme-add-hook "morning" 'menu-bar-right-scroll-bar)
(etheme-add-hook "morning" '(lambda () (tool-bar-mode 1)))
(etheme-add-hook "morning" '(lambda () (set-cursor-color "plum4")))
(etheme-add-hook "morning" '(lambda () (set-mouse-color "blue4")))

(etheme-add-hook "elflord" 'menu-bar-right-scroll-bar)
(etheme-add-hook "elflord" '(lambda () (tool-bar-mode 1)))
(etheme-add-hook "elflord" '(lambda () (set-cursor-color "white")))
(etheme-add-hook "elflord" '(lambda () (set-mouse-color "white")))

(etheme-add-hook "cinsk" 'menu-bar-left-scroll-bar)
(etheme-add-hook "cinsk" '(lambda () (tool-bar-mode -1)))
(etheme-add-hook "cinsk" '(lambda () (set-cursor-color "white")))
(etheme-add-hook "cinsk" '(lambda () (set-mouse-color "white")))

(etheme-add-hook "canyon" 'menu-bar-left-scroll-bar)
(etheme-add-hook "canyon" '(lambda () (tool-bar-mode 1)))
(etheme-add-hook "canyon" '(lambda () (set-cursor-color "plum4")))
(etheme-add-hook "canyon" '(lambda () (set-mouse-color "blue4")))

(etheme-add-hook "blue" 'menu-bar-right-scroll-bar)
(etheme-add-hook "blue" '(lambda () (tool-bar-mode -1)))
(etheme-add-hook "blue" '(lambda () (set-cursor-color "SkyBlue")))
(etheme-add-hook "blue" '(lambda () (set-mouse-color "DimGray")))

(etheme-add-hook "darkblue" 'menu-bar-right-scroll-bar)
(etheme-add-hook "darkblue" '(lambda () (tool-bar-mode -1)))
(etheme-add-hook "darkblue" '(lambda () (set-cursor-color "white")))
(etheme-add-hook "darkblue" '(lambda () (set-mouse-color "yellow")))

(etheme-add-hook "desert" 'menu-bar-right-scroll-bar)
(etheme-add-hook "desert" '(lambda () (tool-bar-mode -1)))
(etheme-add-hook "desert" '(lambda () (set-cursor-color "khaki")))
(etheme-add-hook "desert" '(lambda () (set-mouse-color "yellow")))

(provide 'etheme)

 

;;==========================

;; this is .emacs.d/setnu.el

;;==========================

;;; vi-style line number mode for Emacs
;;; (requires Emacs 19.29 or later, or XEmacs 19.14 or later)
;;; Copyright (C) 1994, 1995, 1997 Kyle E. Jones
;;;
;;; This program is free software; you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 2, 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.
;;;
;;; A copy of the GNU General Public License can be obtained from this
;;; program's author (send electronic mail to [e-mail]) or from
;;; the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA
;;; 02139, USA.
;;;
;;; Send bug reports to [e-mail]
;;
;; M-x setnu-mode toggles the line number mode on and off.
;;
;; turn-on-setnu-mode is useful for adding to a major-mode hook
;; variable.
;; Example:
;;     (add-hook 'text-mode-hook 'turn-on-setnu-mode)
;; to automatically turn on line numbering when enterting text-mode."

(provide 'setnu)

(defconst setnu-running-under-xemacs
  (or (string-match "XEmacs" emacs-version)
      (string-match "Lucid" emacs-version)))

(defconst setnu-mode-version "1.06"
  "Version number for this release of setnu-mode.")

(defvar setnu-mode nil
  "Non-nil if setnu-mode is active in the current buffer.")
(make-variable-buffer-local 'setnu-mode)

(defvar setnu-start-extent nil
  "First extent of a chain of extents used by setnu-mode.
Each line has its own extent.  Each line extent has a
`setnu-next-extent' property that points to the next extent in
the chain, which is the extent for the next line in the buffer.
There is also a `setnu-prev-extent' that points at the previous
extent in the chain.  To distinguish them from other extents the
setnu-mode extents all have a non-nil `setnu' property.")
(make-variable-buffer-local 'setnu-start-extent)

(defvar setnu-glyph-obarray (make-vector 401 0)
  "Obarray of symbols whose values are line number glyphs.
Each symbol name is the string represnetation of a number, perhaps
passed with spaces.  The value of the symbol is a glyph that can
be made the begin glyph of an extent to display as a line number.")

(defvar setnu-begin-glyph-property (if (fboundp 'extent-property)
                       'begin-glyph
                     'before-string)
  "Property name to use to set the begin glyph of an extent.")

(defvar setnu-line-number-format (if setnu-running-under-xemacs "%4d" "%6d  ")
  "String suitable for `format' that will generate a line number string.
`format' will be called with this string and one other argument
which will be an integer, the line number.")

(defvar setnu-line-number-face 'bold
  "*Face used to display the line numbers.
Currently this works for XEmacs 19.12 and later versions only.")

(defun setnu-mode (&optional arg)
  "Toggle setnu-mode.
With prefix argument, turn setnu-mode on if argument is positive.
When setnu-mode is enabled, a line number will appear at the left
margin of each line."
  (interactive "P")
  (let ((oldmode (not (not setnu-mode)))
    (inhibit-quit t))
    (setq setnu-mode (or (and arg (> (prefix-numeric-value arg) 0))
             (and (null arg) (null setnu-mode))))
    (if (not (eq oldmode setnu-mode))
    (if setnu-mode
        (setnu-mode-on)
      (setnu-mode-off)))))

(defun turn-on-setnu-mode ()
  "Turn on setnu-mode.
Useful for adding to a major-mode hook variable.
Example:
    (add-hook 'text-mode-hook 'turn-on-setnu-mode)
to automatically turn on line numbering when enterting text-mode."
  (setnu-mode 1))

;;; Internal functions

;;; The program is written using XEmacs terminology,
;;; e.g. extents, glyphs, etc.  Functions are defined to twist
;;; the FSF Emacs overlay API into the XEmacs model.

(defconst setnu-running-under-xemacs
  (or (string-match "XEmacs" emacs-version)
      (string-match "Lucid" emacs-version)))

(if setnu-running-under-xemacs
    (fset 'setnu-make-extent 'make-extent)
  (fset 'setnu-make-extent 'make-overlay))

(if setnu-running-under-xemacs
    (fset 'setnu-delete-extent 'delete-extent)
  (fset 'setnu-delete-extent 'delete-overlay))

(if setnu-running-under-xemacs
    (fset 'setnu-extent-property 'extent-property)
  (fset 'setnu-extent-property 'overlay-get))

(if setnu-running-under-xemacs
    (fset 'setnu-set-extent-property 'set-extent-property)
  (fset 'setnu-set-extent-property 'overlay-put))

(if setnu-running-under-xemacs
    (fset 'setnu-set-extent-endpoints 'set-extent-endpoints)
  (fset 'setnu-set-extent-endpoints 'move-overlay))

(if setnu-running-under-xemacs
    (fset 'setnu-extent-end-position 'extent-end-position)
  (fset 'setnu-extent-end-position 'overlay-end))

(if setnu-running-under-xemacs
    (fset 'setnu-extent-start-position 'extent-start-position)
  (fset 'setnu-extent-start-position 'overlay-start))

(if setnu-running-under-xemacs
    (defun setnu-set-extent-begin-glyph (e g)
      (set-extent-begin-glyph e g 'outside-margin))
  (defun setnu-set-extent-begin-glyph (e g)
    (overlay-put e setnu-begin-glyph-property g)))
   
(fset 'setnu-make-glyph (if setnu-running-under-xemacs 'make-glyph 'identity))

(cond ((and setnu-running-under-xemacs (fboundp 'set-glyph-face))
       (fset 'setnu-set-glyph-face 'set-glyph-face))
      (setnu-running-under-xemacs
       (fset 'setnu-set-glyph-face 'ignore))
      (t                ; FSF Emacs
       (defun setnu-set-glyph-face (g face)
     (put-text-property 0 (length g) 'face face g))))

(defun setnu-mode-off ()
  "Internal shutdown of setnu-mode.
Deletes the extents associated with setnu-mode."
  (if (and setnu-running-under-xemacs
       (fboundp 'remove-specifier))
      (remove-specifier left-margin-width (current-buffer)))
  (if setnu-start-extent
      (let (e ee)
    (setq e setnu-start-extent)
    (while e
      (setq ee e)
      (setq e (setnu-extent-property e 'setnu-next-extent))
      (setnu-delete-extent ee))
    (setq setnu-start-extent nil))))

(defun setnu-mode-on ()
  "Internal startup of setnu-mode.
Sets up the extents associated with setnu-mode."
  (if (and setnu-running-under-xemacs
       (fboundp 'set-specifier))
      (set-specifier left-margin-width 6 (current-buffer)))
  (let ((done nil)
    (curr-e nil)
    (n 1)
    (match-data (match-data))
    e start numstr)
    (unwind-protect
    (save-excursion
      (save-restriction
        (widen)
        (goto-char (point-min))
        (setq start (point))
        (while (not done)
          (setq done (null (search-forward "/n" nil 0)))
          (setq e (setnu-make-setnu-extent start (point)))
          (if (null setnu-start-extent)
          (setq setnu-start-extent e
            curr-e e)
        (setnu-set-extent-property curr-e 'setnu-next-extent e)
        (setnu-set-extent-property e 'setnu-prev-extent curr-e)
        (setq curr-e e))
          (setq numstr (format setnu-line-number-format n))
          (setnu-set-extent-property e 'line-number numstr)
          (setnu-set-extent-begin-glyph e (setnu-number-glyph numstr))
          (setq n (1+ n)
            start (point)))))
      (store-match-data match-data))))

(defun setnu-before-change-function (start end)
  "Before change function for setnu-mode.
Notices when a delete is about to delete some lines and adjusts
the line number extents accordingly."
  (if (or (not setnu-mode) (= start end))
      () ;; not in setnu-mode or this is an insertion
    (let ((inhibit-quit t)
      (start-e nil)
      (match-data (match-data))
      end-e saved-next e ee)
      (unwind-protect
      (save-excursion
        (save-restriction
          (widen)
          (goto-char start)
          (if (search-forward "/n" end t)
          (progn
            (setq start-e (setnu-extent-at-create start nil)
              saved-next (setnu-extent-property
                      start-e
                      'setnu-next-extent))
            (setq end-e (setnu-extent-at-create end nil))
            (setnu-set-extent-endpoints
             start-e
             (setnu-extent-start-position start-e)
             (setnu-extent-end-position end-e))
            (setnu-set-extent-property
             start-e 'setnu-next-extent
             (setnu-extent-property end-e 'setnu-next-extent))))
          (if start-e
          (progn
            (setq e (setnu-extent-property start-e 'setnu-next-extent)
              ee saved-next)
            (while (and e (setnu-extent-property e 'setnu-next-extent))
              (setq e (setnu-extent-property e 'setnu-next-extent)
                ee (setnu-extent-property ee 'setnu-next-extent)))
            (while (and e (not (eq ee start-e)))
              (setnu-set-extent-begin-glyph
               e (setnu-extent-property ee setnu-begin-glyph-property))
              (setnu-set-extent-property
               e 'line-number (setnu-extent-property ee 'line-number))
              (setq e (setnu-extent-property e 'setnu-prev-extent)
                ee (setnu-extent-property ee 'setnu-prev-extent)))
            (setq end-e (setnu-extent-property start-e
                               'setnu-next-extent))
            (and end-e
             (setnu-set-extent-property end-e
                            'setnu-prev-extent
                            start-e))
            (setq e saved-next)
            (while (not (eq e end-e))
              (setq ee e
                e (setnu-extent-property e 'setnu-next-extent))
              (setnu-delete-extent ee))))))
    (store-match-data match-data)))))

(defun setnu-after-change-function (start end length)
  "After change function for setnu-mode.
Notices when an insert has added some lines and adjusts
the line number extents accordingly."
  (if (or (not setnu-mode) (= start end))
      () ; not in setnu-mode or this is a deletion
    (let ((inhibit-quit t)
      (ee nil)
      (match-data (match-data))
      (new-lines 0)
      start-e e saved-end saved-next n numstr)
      (unwind-protect
      (save-excursion
        (save-restriction
          (widen)
          (setq start-e (setnu-extent-at-create start nil))
          (if (< (setnu-extent-end-position start-e) (point))
          ;; bogus!  insertion didn't put the text into
          ;; the extent because,
          ;; a. the extent was zero length or
          ;; b. this is FSF Emacs which means chars
          ;;    inserted at the end position of an extent
          ;;    are not inserted into the extent.
          (setnu-set-extent-endpoints
           start-e
           (setnu-extent-start-position start-e)
           end))
          (setq saved-next (setnu-extent-property start-e
                              'setnu-next-extent)
            saved-end (setnu-extent-end-position start-e)
            e start-e)
          (goto-char start)
          (while (search-forward "/n" end 0)
        (setnu-set-extent-endpoints e
                        (setnu-extent-start-position e)
                        (point))
        (setq ee (setnu-make-setnu-extent (point) (point)))
        (setnu-set-extent-property e 'setnu-next-extent ee)
        (setnu-set-extent-property ee 'setnu-prev-extent e)
        (setq e ee new-lines (1+ new-lines)))
          (if ee
          (progn
            (setnu-set-extent-endpoints
             e (setnu-extent-start-position e) saved-end)
            (setnu-set-extent-property e 'setnu-next-extent saved-next)
            (and saved-next
             (setnu-set-extent-property
              saved-next 'setnu-prev-extent e))
            (setq e (setnu-extent-property start-e 'setnu-next-extent)
              ee saved-next)
            (while ee
              (setnu-set-extent-begin-glyph
               e (setnu-extent-property ee setnu-begin-glyph-property))
              (setnu-set-extent-property
               e 'line-number (setnu-extent-property ee 'line-number))
              (setq e (setnu-extent-property e 'setnu-next-extent)
                ee (setnu-extent-property ee 'setnu-next-extent)))
            (setq n (1+ (string-to-int
                 (setnu-extent-property
                  (setnu-extent-property e 'setnu-prev-extent)
                  'line-number))))
            (while e
              (setq numstr (format setnu-line-number-format n))
              (setnu-set-extent-property e 'line-number numstr)
              (setnu-set-extent-begin-glyph
               e (setnu-number-glyph numstr))
              (setq e (setnu-extent-property e 'setnu-next-extent)
                n (1+ n)))))))
    (store-match-data match-data)))))

(defun setnu-number-glyph (number-string)
  (let ((sym (intern number-string setnu-glyph-obarray)))
    (if (boundp sym)
    (symbol-value sym)
      (let ((g (setnu-make-glyph number-string)))
    (set sym g)
    (setnu-set-glyph-face g setnu-line-number-face)
    g ))))

(defun setnu-make-setnu-extent (beg end)
  "Create an extent and set some properties that all setnu extents have."
  (let ((e (setnu-make-extent beg end)))
    (setnu-set-extent-property e 'setnu t)
;;    (setnu-set-extent-property e 'begin-glyph-layout 'outside-margin)
    (setnu-set-extent-property e 'detachable nil)
    (setnu-set-extent-property e 'evaporate nil)
    e ))

(cond ((fboundp 'overlays-in) ;; expect to see this in 19.30
       (defun setnu-extent-at (pos buf)
     "Finds the setnu extent at the position POS in the buffer BUF."
     (catch 'done
       (save-excursion
         (and buf (set-buffer buf))
         (let ((o-list (overlays-in pos (1+ pos))))
           (while o-list
         (if (overlay-get (car o-list) 'setnu)
             (throw 'done (car o-list)))
         (setq o-list (cdr o-list)))
           nil )))))
      ((fboundp 'overlays-at)
       (defun setnu-extent-at (pos buf)
     "Finds the setnu extent at the position POS in the buffer BUF."
     (catch 'done
       (save-excursion
         (and buf (set-buffer buf))
         (let ((o-list (overlays-at pos)) o-lists)
           ;; search what overlays-at returns first.  for all
           ;; but zero length extents this will return the
           ;; extent we want.
           (while o-list
         (if (overlay-get (car o-list) 'setnu)
             (throw 'done (car o-list)))
         (setq o-list (cdr o-list)))
           ;; No luck.  Search the lists returned by
           ;; overlay-lists.  Use overlays-recenter so we only
           ;; have to search the `before' lobe of the return
           ;; value.
           (overlay-recenter (1- pos))
           (setq o-lists (overlay-lists))
           (setq o-list (cdr o-lists))
           (while o-list
         (if (and (overlay-get (car o-list) 'setnu)
              (or (and (= pos (overlay-start (car o-list)))
                   (= pos (overlay-end (car o-list))))
                  (and (>= pos (overlay-start (car o-list)))
                   (< pos (overlay-end (car o-list))))))
             (throw 'done (car o-list)))
         (setq o-list (cdr o-list)))
           nil )))))
       ((fboundp 'map-extents)
    (defun setnu-extent-at (pos buf)
      "Finds the setnu extent at the position POS in the buffer BUF."
      (map-extents (function (lambda (e maparg)
                   (if (setnu-extent-property e 'setnu)
                       e
                     nil)))
               buf pos pos)))
       (t (error "can't find overlays-in, overlays-at, or map-extents!")))

(defun setnu-extent-at-create (pos buf)
  "Like `setnu-extent-at' except if an extent isn't found, then
it is created based on where the extent failed to be found."
  (let ((e (setnu-extent-at pos buf)) ee beg numstr)
    (if e
    e
      ;; no extent found so one must be created.
      (save-excursion
    (goto-char pos)
    (beginning-of-line)
    (setq e (setnu-extent-at (point) buf))
    (cond (e
           ;; found one.  extend it to cover this whole line.
           ;; this takes care of zero length extents that
           ;; might exist at bob or eob that can't be
           ;; inserted into.
           (setq beg (point))
           (forward-line 1)
           (setnu-set-extent-endpoints e beg (point))
           e )
          ((bobp)
           ;; we are at bob and there's no extent.
           ;;
           ;; this is because the extent that was there got
           ;; detached because all the text in the buffer was
           ;; deleted.  so we create a new extent and make it
           ;; contain the whole buffer, since there can be no
           ;; other attached extents.
           (setq e (setnu-make-setnu-extent (point-min) (point-max))
             numstr (format setnu-line-number-format 1))
           (setnu-set-extent-property e 'line-number numstr)
           (setnu-set-extent-begin-glyph e (setnu-number-glyph numstr))
           (setq setnu-start-extent e)
           e )
          (t
           ;; we must be at eob and there's no extent.
           ;;
           ;; this is because the extent that was there
           ;; shrank to zero length and was detached.  create
           ;; a new extent that contains all text from point
           ;; to pos.
           (setq e (setnu-make-setnu-extent (point) pos))
           (setq ee (setnu-extent-at (1- (point)) buf))
           (setnu-set-extent-property e 'setnu-prev-extent ee)
           (setnu-set-extent-property ee 'setnu-next-extent e)
           (setq numstr
             (format setnu-line-number-format
                 (1+ (string-to-int
                  (setnu-extent-property ee 'line-number)))))
           (setnu-set-extent-property e 'line-number numstr)
           (setnu-set-extent-begin-glyph e (setnu-number-glyph numstr))
           e ))))))

(add-hook 'before-change-functions 'setnu-before-change-function)
(add-hook 'after-change-functions 'setnu-after-change-function)