xemacs-beta: lisp/viper/viper.el comparison

comparison lisp/viper/viper.el @ 163:0132846995bd r20-3b8

Import from CVS: tag r20-3b8

author	cvs
date	Mon, 13 Aug 2007 09:43:35 +0200
parents	43dd3413c7c7
children	2d532a89d707

comparison

equal deleted inserted replaced

-:4de2936b4e77
+:0132846995bd
 ;;  Keywords: emulations
 ;;  Author: Michael Kifer <kifer@cs.sunysb.edu>
 ;; Copyright (C) 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
-(defconst viper-version "2.93 of May 20, 1997"
+(defconst viper-version "2.94 of June 12, 1997"
 "The current version of Viper")
 ;; This file is part of GNU Emacs.
 ;; GNU Emacs is free software; you can redistribute it and/or modify
 (require 'advice)
 (require 'cl)
 (require 'ring)
-(provide 'viper)
+;; compiler pacifier
-;; Compiler pacifier
-(defvar vip-minibuffer-current-face)
-(defvar vip-minibuffer-insert-face)
-(defvar vip-minibuffer-vi-face)
-(defvar vip-minibuffer-emacs-face)
-(defvar iso-accents-mode)
-(defvar zmacs-region-stays)
 (defvar mark-even-if-inactive)
-(eval-when-compile
+;; loading happens only in non-interactive compilation
-(let ((load-path (cons (expand-file-name ".") load-path)))
+;; in order to spare non-viperized emacs from being viperized
-(or (featurep 'viper-util)
+(if noninteractive
-	(load "viper-util.el" nil nil 'nosuffix))
+(eval-when-compile
-(or (featurep 'viper-keym)
+(let ((load-path (cons (expand-file-name ".") load-path)))
-	(load "viper-keym.el" nil nil 'nosuffix))
+	(or (featurep 'viper-cmd)
-(or (featurep 'viper-mous)
+	    (load "viper-cmd.el" nil nil 'nosuffix))
-	(load "viper-mous.el" nil nil 'nosuffix))
+	)))
-(or (featurep 'viper-macs)
-	(load "viper-macs.el" nil nil 'nosuffix))
-(or (featurep 'viper-ex)
-	(load "viper-ex.el" nil nil 'nosuffix))
-))
 ;; end pacifier
+(require 'viper-cmd)
-(require 'viper-util)
-(require 'viper-keym)
+(defvar vip-always t
-(require 'viper-mous)
+"See `viper-always'. This variable is for compatibility with older Vipers.")
-(require 'viper-macs)
+(defvar viper-always vip-always
-(require 'viper-ex)
+"Non-nil means, arrange for vi-state to be a default when appropriate.
+This is different from `viper-mode' variable in that `viper-mode' determines
+whether to use Viper in the first place, while `viper-always', if nil, lets
+user decide when to invoke Viper in a major mode.")
+(defvar viper-mode (cond (noninteractive nil)
+			 (t 'ask))
+"Viperize or not Viperize.
+If t, viperize emacs. If nil -- don't. If `ask', ask the user.
+This variable is used primatily when Viper is being loaded.
+Must be set in `~/.emacs' before Viper is loaded.
+DO NOT set this variable interactively.")
-;; Generic predicates
+;; The following are provided for compatibility with older VIP's
-;; These test functions are shamelessly lifted from vip 4.4.2 by Aamod Sane
+;;;###autoload
+(defalias 'vip-mode 'viper-mode)
-;; generate test functions
-;; given symbol foo, foo-p is the test function, foos is the set of
+(defalias 'vip-change-mode-to-vi 'vip-change-state-to-vi)
-;; Viper command keys
+(defalias 'vip-change-mode-to-insert 'vip-change-state-to-insert)
-;; (macroexpand '(vip-test-com-defun foo))
+(defalias 'vip-change-mode-to-emacs 'vip-change-state-to-emacs)
-;; (defun foo-p (com) (consp (memq (if (< com 0) (- com) com) foos)))
-(defmacro vip-test-com-defun (name)
-(let* ((snm (symbol-name name))
-	 (nm-p (intern (concat snm "-p")))
-	 (nms (intern (concat snm "s"))))
-(` (defun (, nm-p) (com)
-	 (consp (memq (if (< com 0) (- com) com) (, nms)))))))
-;; Variables for defining VI commands
-;; Modifying commands that can be prefixes to movement commands
-(defconst vip-prefix-commands '(?c ?d ?y ?! ?= ?# ?< ?> ?\"))
-;; define vip-prefix-command-p
-(vip-test-com-defun vip-prefix-command)
-;; Commands that are pairs eg. dd. r and R here are a hack
-(defconst vip-charpair-commands '(?c ?d ?y ?! ?= ?< ?> ?r ?R))
-;; define vip-charpair-command-p
-(vip-test-com-defun vip-charpair-command)
-(defconst vip-movement-commands '(?b ?B ?e ?E ?f ?F ?G ?h ?H ?j ?k ?l
-				     ?H ?M ?L ?n ?t ?T ?w ?W ?$ ?%
-				     ?^ ?( ?) ?- ?+ ?| ?{ ?} ?[ ?] ?' ?`
-				     ?; ?, ?0 ?? ?/
-				     )
-				     "Movement commands")
-;; define vip-movement-command-p
-(vip-test-com-defun vip-movement-command)
-(defconst vip-digit-commands '(?1 ?2 ?3 ?4 ?5 ?6 ?7 ?8 ?9)
-"Digit commands")
-;; define vip-digit-command-p
-(vip-test-com-defun vip-digit-command)
-;; Commands that can be repeated by . (dotted)
-(defconst vip-dotable-commands '(?c ?d ?C ?s ?S ?D ?> ?<))
-;; define vip-dotable-command-p
-(vip-test-com-defun vip-dotable-command)
-;; Commands that can follow a #
-(defconst vip-hash-commands '(?c ?C ?g ?q ?s))
-;; define vip-hash-command-p
-(vip-test-com-defun vip-hash-command)
-;; Commands that may have registers as prefix
-(defconst vip-regsuffix-commands '(?d ?y ?Y ?D ?p ?P ?x ?X))
-;; define vip-regsuffix-command-p
-(vip-test-com-defun vip-regsuffix-command)
-(defconst vip-vi-commands (append vip-movement-commands
-				  vip-digit-commands
-				  vip-dotable-commands
-				  vip-charpair-commands
-				  vip-hash-commands
-				  vip-prefix-commands
-				  vip-regsuffix-commands)
-"The list of all commands in Vi-state.")
-;; define vip-vi-command-p
-(vip-test-com-defun vip-vi-command)
-;;; CODE
-;; sentinels
-;; Runs vip-after-change-functions inside after-change-functions
-(defun vip-after-change-sentinel (beg end len)
-(let ((list vip-after-change-functions))
-(while list
-(funcall (car list) beg end len)
-(setq list (cdr list)))))
-;; Runs vip-before-change-functions inside before-change-functions
-(defun vip-before-change-sentinel (beg end)
-(let ((list vip-before-change-functions))
-(while list
-(funcall (car list) beg end)
-(setq list (cdr list)))))
-(defsubst vip-post-command-sentinel ()
-(run-hooks 'vip-post-command-hooks))
-(defsubst vip-pre-command-sentinel ()
-(run-hooks 'vip-pre-command-hooks))
-;; Needed so that Viper will be able to figure the last inserted
-;; chunk of text with reasonable accuracy.
-(defsubst vip-insert-state-post-command-sentinel ()
-(if (and (memq vip-current-state '(insert-state replace-state))
-	   vip-insert-point
-	   (>= (point) vip-insert-point))
-(setq vip-last-posn-while-in-insert-state (point-marker)))
-(if (eq vip-current-state 'insert-state)
-(progn
-	(or (stringp vip-saved-cursor-color)
-	    (string= (vip-get-cursor-color) vip-insert-state-cursor-color)
-	    (setq vip-saved-cursor-color (vip-get-cursor-color)))
-	(if (stringp vip-saved-cursor-color)
-	    (vip-change-cursor-color vip-insert-state-cursor-color))
-	))
-(if (and (eq this-command 'dabbrev-expand)
-	   (integerp vip-pre-command-point)
-	   (> vip-insert-point vip-pre-command-point))
-(move-marker vip-insert-point vip-pre-command-point))
-)
-(defsubst vip-insert-state-pre-command-sentinel ()
-(or (memq this-command '(self-insert-command))
-(memq (vip-event-key last-command-event)
-	    '(up down left right (meta f) (meta b)
-		 (control n) (control p) (control f) (control b)))
-(vip-restore-cursor-color-after-insert))
-(if (and (eq this-command 'dabbrev-expand)
-	   (markerp vip-insert-point)
-	   (marker-position vip-insert-point))
-(setq vip-pre-command-point (marker-position vip-insert-point))))
-(defsubst vip-R-state-post-command-sentinel ()
-;; Restoring cursor color is needed despite
-;; vip-replace-state-pre-command-sentinel: When you jump to another buffer in
-;; another frame, the pre-command hook won't change cursor color to default
-;; in that other frame.  So, if the second frame cursor was red and we set
-;; the point outside the replacement region, then the cursor color will
-;; remain red. Restoring the default, below, prevents this.
-(if (and (<= (vip-replace-start) (point))
-	   (<=  (point) (vip-replace-end)))
-(vip-change-cursor-color vip-replace-overlay-cursor-color)
-(vip-restore-cursor-color-after-replace)
-))
-;; to speed up, don't change cursor color before self-insert
-;; and common move commands
-(defsubst vip-replace-state-pre-command-sentinel ()
-(or (memq this-command '(self-insert-command))
-(memq (vip-event-key last-command-event)
-	    '(up down left right (meta f) (meta b)
-		 (control n) (control p) (control f) (control b)))
-(vip-restore-cursor-color-after-replace)))
-(defun vip-replace-state-post-command-sentinel ()
-;; Restoring cursor color is needed despite
-;; vip-replace-state-pre-command-sentinel: When one jumps to another buffer
-;; in another frame, the pre-command hook won't change cursor color to
-;; default in that other frame.  So, if the second frame cursor was red and
-;; we set the point outside the replacement region, then the cursor color
-;; will remain red. Restoring the default, below, fixes this problem.
-;;
-;; We optimize for self-insert-command's here, since they either don't change
-;; cursor color or, if they terminate replace mode, the color will be changed
-;; in vip-finish-change
-(or (memq this-command '(self-insert-command))
-(vip-restore-cursor-color-after-replace))
-(cond
-((eq vip-current-state 'replace-state)
-;; delete characters to compensate for inserted chars.
-(let ((replace-boundary (vip-replace-end)))
-(save-excursion
-	(goto-char vip-last-posn-in-replace-region)
-	(delete-char vip-replace-chars-to-delete)
-	(setq vip-replace-chars-to-delete 0
-	      vip-replace-chars-deleted 0)
-	;; terminate replace mode if reached replace limit
-	(if (= vip-last-posn-in-replace-region
-	       (vip-replace-end))
-	    (vip-finish-change vip-last-posn-in-replace-region)))
-(if (and (<= (vip-replace-start) (point))
-	       (<=  (point) replace-boundary))
-	  (progn
-	    ;; the state may have changed in vip-finish-change above
-	    (if (eq vip-current-state 'replace-state)
-		(vip-change-cursor-color vip-replace-overlay-cursor-color))
-	    (setq vip-last-posn-in-replace-region (point-marker))))
-))
-(t ;; terminate replace mode if changed Viper states.
-(vip-finish-change vip-last-posn-in-replace-region))))
-;; changing mode
-;; Change state to NEW-STATE---either emacs-state, vi-state, or insert-state.
-(defun vip-change-state (new-state)
-;; Keep vip-post/pre-command-hooks fresh.
-;; We remove then add vip-post/pre-command-sentinel since it is very
-;; desirable that vip-pre-command-sentinel is the last hook and
-;; vip-post-command-sentinel is the first hook.
-(remove-hook 'post-command-hook 'vip-post-command-sentinel)
-(add-hook 'post-command-hook 'vip-post-command-sentinel)
-(remove-hook 'pre-command-hook 'vip-pre-command-sentinel)
-(add-hook 'pre-command-hook 'vip-pre-command-sentinel t)
-;; These hooks will be added back if switching to insert/replace mode
-(vip-remove-hook 'vip-post-command-hooks
-		   'vip-insert-state-post-command-sentinel)
-(vip-remove-hook 'vip-pre-command-hooks
-		   'vip-insert-state-pre-command-sentinel)
-(cond ((eq new-state 'vi-state)
-	 (cond ((member vip-current-state '(insert-state replace-state))
-		;; move vip-last-posn-while-in-insert-state
-		;; This is a normal hook that is executed in insert/replace
-		;; states after each command. In Vi/Emacs state, it does
-		;; nothing. We need to execute it here to make sure that
-		;; the last posn was recorded when we hit ESC.
-		;; It may be left unrecorded if the last thing done in
-		;; insert/repl state was dabbrev-expansion or abbrev
-		;; expansion caused by hitting ESC
-		(vip-insert-state-post-command-sentinel)
-		(condition-case conds
-		    (progn
-		      (vip-save-last-insertion
-		       vip-insert-point
-		       vip-last-posn-while-in-insert-state)
-		      (if vip-began-as-replace
-			  (setq vip-began-as-replace nil)
-			;; repeat insert commands if numerical arg > 1
-			(save-excursion
-			  (vip-repeat-insert-command))))
-		  (error
-		   (vip-message-conditions conds)))
-		(if (> (length vip-last-insertion) 0)
-		    (vip-push-onto-ring vip-last-insertion
-					'vip-insertion-ring))
-		(if vip-ex-style-editing-in-insert
-		    (or (bolp) (backward-char 1))))
-	       ))
-	;; insert or replace
-	((memq new-state '(insert-state replace-state))
-	 (if (memq vip-current-state '(emacs-state vi-state))
-	     (vip-move-marker-locally 'vip-insert-point (point)))
-	 (vip-move-marker-locally 'vip-last-posn-while-in-insert-state (point))
-	 (vip-add-hook 'vip-post-command-hooks
-		       'vip-insert-state-post-command-sentinel t)
-	 (vip-add-hook 'vip-pre-command-hooks
-		       'vip-insert-state-pre-command-sentinel t))
-	) ; outermost cond
-;; Nothing needs to be done to switch to emacs mode! Just set some
-;; variables, which is already done in vip-change-state-to-emacs!
-(setq vip-current-state new-state)
-(vip-normalize-minor-mode-map-alist)
-(vip-adjust-keys-for new-state)
-(vip-set-mode-vars-for new-state)
-(vip-refresh-mode-line)
-)
-(defun vip-adjust-keys-for (state)
-"Make necessary adjustments to keymaps before entering STATE."
-(cond ((memq state '(insert-state replace-state))
-	 (if vip-auto-indent
-	     (progn
-	       (define-key vip-insert-basic-map "\C-m" 'vip-autoindent)
-	       (if vip-want-emacs-keys-in-insert
-		   ;; expert
-		   (define-key vip-insert-basic-map "\C-j" nil)
-		 ;; novice
-		 (define-key vip-insert-basic-map "\C-j" 'vip-autoindent)))
-	   (define-key vip-insert-basic-map "\C-m" nil)
-	   (define-key vip-insert-basic-map "\C-j" nil))
-	 (setq vip-insert-diehard-minor-mode
-	       (not vip-want-emacs-keys-in-insert))
-	 (if vip-want-ctl-h-help
-	     (progn
-	       (define-key vip-insert-basic-map [(control h)] 'help-command)
-	       (define-key vip-replace-map [(control h)] 'help-command))
-	   (define-key vip-insert-basic-map
-	     [(control h)] 'vip-del-backward-char-in-insert)
-	   (define-key vip-replace-map
-	     [(control h)] 'vip-del-backward-char-in-replace)))
-	(t ; Vi state
-	 (setq vip-vi-diehard-minor-mode (not vip-want-emacs-keys-in-vi))
-	 (if vip-want-ctl-h-help
-	     (define-key vip-vi-basic-map [(control h)] 'help-command)
-	   (define-key vip-vi-basic-map [(control h)] 'vip-backward-char)))
-	))
-;; Normalizes minor-mode-map-alist by putting Viper keymaps first.
-;; This ensures that Viper bindings are in effect, regardless of which minor
-;; modes were turned on by the user or by other packages.
-(defun vip-normalize-minor-mode-map-alist ()
-(setq minor-mode-map-alist
-	(vip-append-filter-alist
-	 (list
-	       (cons 'vip-vi-intercept-minor-mode vip-vi-intercept-map)
-	       (cons 'vip-vi-minibuffer-minor-mode vip-minibuffer-map)
-	       (cons 'vip-vi-local-user-minor-mode vip-vi-local-user-map)
-	       (cons 'vip-vi-kbd-minor-mode vip-vi-kbd-map)
-	       (cons 'vip-vi-global-user-minor-mode vip-vi-global-user-map)
-	       (cons 'vip-vi-state-modifier-minor-mode
-		     (if (keymapp
-			  (cdr (assoc major-mode vip-vi-state-modifier-alist)))
-			 (cdr (assoc major-mode vip-vi-state-modifier-alist))
-		       vip-empty-keymap))
-	       (cons 'vip-vi-diehard-minor-mode  vip-vi-diehard-map)
-	       (cons 'vip-vi-basic-minor-mode     vip-vi-basic-map)
-	       (cons 'vip-insert-intercept-minor-mode vip-insert-intercept-map)
-	       (cons 'vip-replace-minor-mode  vip-replace-map)
-	       ;; vip-insert-minibuffer-minor-mode must come after
-	       ;; vip-replace-minor-mode
-	       (cons 'vip-insert-minibuffer-minor-mode
-		     vip-minibuffer-map)
-	       (cons 'vip-insert-local-user-minor-mode
-		     vip-insert-local-user-map)
-	       (cons 'vip-insert-kbd-minor-mode vip-insert-kbd-map)
-	       (cons 'vip-insert-global-user-minor-mode
-		     vip-insert-global-user-map)
-	       (cons 'vip-insert-state-modifier-minor-mode
-		     (if (keymapp
-			  (cdr
-			   (assoc major-mode vip-insert-state-modifier-alist)))
-			 (cdr
-			  (assoc major-mode vip-insert-state-modifier-alist))
-		       vip-empty-keymap))
-	       (cons 'vip-insert-diehard-minor-mode vip-insert-diehard-map)
-	       (cons 'vip-insert-basic-minor-mode vip-insert-basic-map)
-	       (cons 'vip-emacs-intercept-minor-mode
-		     vip-emacs-intercept-map)
-	       (cons 'vip-emacs-local-user-minor-mode
-		     vip-emacs-local-user-map)
-	       (cons 'vip-emacs-kbd-minor-mode vip-emacs-kbd-map)
-	       (cons 'vip-emacs-global-user-minor-mode
-		     vip-emacs-global-user-map)
-	       (cons 'vip-emacs-state-modifier-minor-mode
-		     (if (keymapp
-			  (cdr
-			   (assoc major-mode vip-emacs-state-modifier-alist)))
-			 (cdr
-			  (assoc major-mode vip-emacs-state-modifier-alist))
-		       vip-empty-keymap))
-	       )
-	 minor-mode-map-alist)))
-;; Viper mode-changing commands and utilities
-;; Modifies mode-line-buffer-identification.
-(defun vip-refresh-mode-line ()
-(setq vip-mode-string
-	(cond ((eq vip-current-state 'emacs-state) vip-emacs-state-id)
-	      ((eq vip-current-state 'vi-state) vip-vi-state-id)
-	      ((eq vip-current-state 'replace-state) vip-replace-state-id)
-	      ((eq vip-current-state 'insert-state) vip-insert-state-id)))
-;; Sets Viper mode string in global-mode-string
-(force-mode-line-update))
 ;;;###autoload
 (defun viper-mode ()
 "Turn on Viper emulation of Vi."
 (interactive)
 (if (not noninteractive)
 (progn
+	;; if the user requested viper-mode explicitly
+	(if viper-mode
+	    ()
+	  (setq viper-mode 1)
+	  (load-library "viper"))
 	(if vip-first-time ; This check is important. Without it, startup and
 	    (progn	   ; expert-level msgs mix up when viper-mode recurses
 	      (setq vip-first-time nil)
 	      (if (not vip-inhibit-startup-message)
 		  (save-window-excursion
 		     "The last message is in buffer `Viper Startup Message'")
 		    (sit-for 4)
 		    ))
 	      (vip-set-expert-level 'dont-change-unless)))
 	(vip-change-state-to-vi))))
-;;;###autoload
-(defalias 'vip-mode 'viper-mode)
-;; Switch from Insert state to Vi state.
-(defun vip-exit-insert-state ()
-(interactive)
-(vip-change-state-to-vi))
-(defun vip-set-mode-vars-for (state)
-"Sets Viper minor mode variables to put Viper's state STATE in effect."
-;; Emacs state
-(setq vip-vi-minibuffer-minor-mode	   nil
-vip-insert-minibuffer-minor-mode   nil
-	vip-vi-intercept-minor-mode	   nil
-	vip-insert-intercept-minor-mode	   nil
-	vip-vi-local-user-minor-mode       nil
-	vip-vi-kbd-minor-mode        	   nil
-	vip-vi-global-user-minor-mode      nil
-	vip-vi-state-modifier-minor-mode   nil
-	vip-vi-diehard-minor-mode     	   nil
-vip-vi-basic-minor-mode       	   nil
-	vip-replace-minor-mode 	      	   nil
-	vip-insert-local-user-minor-mode     nil
-	vip-insert-kbd-minor-mode     	     nil
-	vip-insert-global-user-minor-mode    nil
-	vip-insert-state-modifier-minor-mode nil
-	vip-insert-diehard-minor-mode 	     nil
-	vip-insert-basic-minor-mode   	     nil
-	vip-emacs-intercept-minor-mode       t
-	vip-emacs-local-user-minor-mode      t
-	vip-emacs-kbd-minor-mode             (not (vip-is-in-minibuffer))
-	vip-emacs-global-user-minor-mode     t
-	vip-emacs-state-modifier-minor-mode  t
-	)
-;; Vi state
-(if (eq state 'vi-state) ; adjust for vi-state
-(setq
-vip-vi-intercept-minor-mode	   t
-vip-vi-minibuffer-minor-mode	   (vip-is-in-minibuffer)
-vip-vi-local-user-minor-mode	   t
-vip-vi-kbd-minor-mode        	   (not (vip-is-in-minibuffer))
-vip-vi-global-user-minor-mode	   t
-vip-vi-state-modifier-minor-mode    t
-;; don't let the diehard keymap block command completion
-;; and other things in the minibuffer
-vip-vi-diehard-minor-mode    	   (not
-					    (or vip-want-emacs-keys-in-vi
-						(vip-is-in-minibuffer)))
-vip-vi-basic-minor-mode      	    t
-vip-emacs-intercept-minor-mode       nil
-vip-emacs-local-user-minor-mode      nil
-vip-emacs-kbd-minor-mode     	    nil
-vip-emacs-global-user-minor-mode     nil
-vip-emacs-state-modifier-minor-mode  nil
-))
-;; Insert and Replace states
-(if (member state '(insert-state replace-state))
-(setq
-vip-insert-intercept-minor-mode	    t
-vip-replace-minor-mode	     	    (eq state 'replace-state)
-vip-insert-minibuffer-minor-mode	    (vip-is-in-minibuffer)
-vip-insert-local-user-minor-mode     t
-vip-insert-kbd-minor-mode     	    (not (vip-is-in-minibuffer))
-vip-insert-global-user-minor-mode    t
-vip-insert-state-modifier-minor-mode  t
-;; don't let the diehard keymap block command completion
-;; and other things in the minibuffer
-vip-insert-diehard-minor-mode 	    (not
-					     (or vip-want-emacs-keys-in-insert
-						 (vip-is-in-minibuffer)))
-vip-insert-basic-minor-mode   	    t
-vip-emacs-intercept-minor-mode       nil
-vip-emacs-local-user-minor-mode      nil
-vip-emacs-kbd-minor-mode     	    nil
-vip-emacs-global-user-minor-mode     nil
-vip-emacs-state-modifier-minor-mode  nil
-))
-;; minibuffer faces
-(if (vip-has-face-support-p)
-(setq vip-minibuffer-current-face
-	    (cond ((eq state 'emacs-state) vip-minibuffer-emacs-face)
-		  ((eq state 'vi-state) vip-minibuffer-vi-face)
-		  ((memq state '(insert-state replace-state))
-		   vip-minibuffer-insert-face))))
-(if (vip-is-in-minibuffer)
-(vip-set-minibuffer-overlay))
-)
-;; This also takes care of the annoying incomplete lines in files.
-;; Also, this fixes `undo' to work vi-style for complex commands.
-(defun vip-change-state-to-vi ()
-"Change Viper state to Vi."
-(interactive)
-(if (and vip-first-time (not (vip-is-in-minibuffer)))
-(viper-mode)
-(if overwrite-mode (overwrite-mode nil))
-(if abbrev-mode (expand-abbrev))
-(if (and auto-fill-function (> (current-column) fill-column))
-	(funcall auto-fill-function))
-;; don't leave whitespace lines around
-(if (and (memq last-command
-		   '(vip-autoindent
-		     vip-open-line vip-Open-line
-		     vip-replace-state-exit-cmd))
-	     (vip-over-whitespace-line))
-	(indent-to-left-margin))
-(vip-add-newline-at-eob-if-necessary)
-(if vip-undo-needs-adjustment  (vip-adjust-undo))
-(vip-change-state 'vi-state)
-;; always turn off iso-accents-mode, or else we won't be able to use the
-;; keys `,',^ in Vi state, as they will do accents instead of Vi actions.
-(if (and (boundp 'iso-accents-mode) iso-accents-mode)
-	(iso-accents-mode -1))
-(vip-restore-cursor-color-after-insert)
-;; Protection against user errors in hooks
-(condition-case conds
-	(run-hooks 'vip-vi-state-hook)
-(error
-(vip-message-conditions conds)))))
-(defun vip-change-state-to-insert ()
-"Change Viper state to Insert."
-(interactive)
-(vip-change-state 'insert-state)
-(if (and vip-automatic-iso-accents (fboundp 'iso-accents-mode))
-(iso-accents-mode 1)) ; turn iso accents on
-(or (stringp vip-saved-cursor-color)
-(string= (vip-get-cursor-color) vip-insert-state-cursor-color)
-(setq vip-saved-cursor-color (vip-get-cursor-color)))
-;; Commented out, because if vip-change-state-to-insert is executed
-;; non-interactively then the old cursor color may get lost. Same old Emacs
-;; bug related to local variables?
-;;;(if (stringp vip-saved-cursor-color)
-;;;      (vip-change-cursor-color vip-insert-state-cursor-color))
-;; Protection against user errors in hooks
-(condition-case conds
-(run-hooks 'vip-insert-state-hook)
-(error
-(vip-message-conditions conds))))
-(defsubst vip-downgrade-to-insert ()
-(setq vip-current-state 'insert-state
-vip-replace-minor-mode nil)
-)
-;; Change to replace state. When the end of replacement region is reached,
-;; replace state changes to insert state.
-(defun vip-change-state-to-replace (&optional non-R-cmd)
-(vip-change-state 'replace-state)
-(if (and vip-automatic-iso-accents (fboundp 'iso-accents-mode))
-(iso-accents-mode 1)) ; turn iso accents on
-;; Run insert-state-hook
-(condition-case conds
-(run-hooks 'vip-insert-state-hook 'vip-replace-state-hook)
-(error
-(vip-message-conditions conds)))
-(if non-R-cmd
-(vip-start-replace)
-;; 'R' is implemented using Emacs's overwrite-mode
-(vip-start-R-mode))
-)
-(defun vip-change-state-to-emacs ()
-"Change Viper state to Emacs."
-(interactive)
-(vip-change-state 'emacs-state)
-(if (and vip-automatic-iso-accents (fboundp 'iso-accents-mode))
-(iso-accents-mode 1)) ; turn iso accents on
-;; Protection agains user errors in hooks
-(condition-case conds
-(run-hooks 'vip-emacs-state-hook)
-(error
-(vip-message-conditions conds))))
-;; escape to emacs mode termporarily
-(defun vip-escape-to-emacs (arg &optional events)
-"Escape to Emacs state from Vi state for one Emacs command.
-ARG is used as the prefix value for the executed command.  If
-EVENTS is a list of events, which become the beginning of the command."
-(interactive "P")
-(if (= last-command-char ?\\)
-(message "Switched to EMACS state for the next command..."))
-(vip-escape-to-state arg events 'emacs-state))
-;; escape to Vi mode termporarily
-(defun vip-escape-to-vi (arg)
-"Escape from Emacs state to Vi state for one Vi 1-character command.
-If the Vi command that the user types has a prefix argument, e.g., `d2w', then
-Vi's prefix argument will be used. Otherwise, the prefix argument passed to
-`vip-escape-to-vi' is used."
-(interactive "P")
-(message "Switched to VI state for the next command...")
-(vip-escape-to-state arg nil 'vi-state))
-;; Escape to STATE mode for one Emacs command.
-(defun vip-escape-to-state (arg events state)
-;;(let (com key prefix-arg)
-(let (com key)
-;; this temporarily turns off Viper's minor mode keymaps
-(vip-set-mode-vars-for state)
-(vip-normalize-minor-mode-map-alist)
-(if events (vip-set-unread-command-events events))
-;; protect against keyboard quit and other errors
-(condition-case nil
-	(let (vip-vi-kbd-minor-mode
-	      vip-insert-kbd-minor-mode
-	      vip-emacs-kbd-minor-mode)
-	  (unwind-protect
-	      (progn
-		(setq com (key-binding (setq key
-					     (if vip-xemacs-p
-						 (read-key-sequence nil)
-					       (read-key-sequence nil t)))))
-		;; In case of binding indirection--chase definitions.
-		;; Have to do it here because we execute this command under
-		;; different keymaps, so command-execute may not do the
-		;; right thing there
-		(while (vectorp com) (setq com (key-binding com))))
-	    nil)
-	  ;; Execute command com in the original Viper state, not in state
-	  ;; `state'. Otherwise, if we switch buffers while executing the
-	  ;; escaped to command, Viper's mode vars will remain those of
-	  ;; `state'. When we return to the orig buffer, the bindings will be
-	  ;; screwed up.
-	  (vip-set-mode-vars-for vip-current-state)
-	  ;; this-command, last-command-char, last-command-event
-	  (setq this-command com)
-	  (if vip-xemacs-p ; XEmacs represents key sequences as vectors
-	      (setq last-command-event (vip-copy-event (vip-seq-last-elt key))
-		    last-command-char (event-to-character last-command-event))
-	    ;; Emacs represents them as sequences (str or vec)
-	    (setq last-command-event (vip-copy-event (vip-seq-last-elt key))
-		  last-command-char last-command-event))
-	  (if (commandp com)
-	      (progn
-		(setq prefix-arg (or prefix-arg arg))
-		(command-execute com)))
-	  )
-(quit (ding))
-(error (beep 1))))
-;; set state in the new buffer
-(vip-set-mode-vars-for vip-current-state))
-(defun vip-exec-form-in-vi  (form)
-"Execute FORM in Vi state, regardless of the Ccurrent Vi state."
-(let ((buff (current-buffer))
-	result)
-(vip-set-mode-vars-for 'vi-state)
-(condition-case nil
-	(setq result (eval form))
-(error
-(signal 'quit nil)))
-(if (not (equal buff (current-buffer))) ; cmd switched buffer
-	(save-excursion
-	  (set-buffer buff)
-	  (vip-set-mode-vars-for vip-current-state)))
-(vip-set-mode-vars-for vip-current-state)
-result))
-(defun vip-exec-form-in-emacs  (form)
-"Execute FORM in Emacs, temporarily disabling Viper's minor modes.
-Similar to vip-escape-to-emacs, but accepts forms rather than keystrokes."
-(let ((buff (current-buffer))
-	result)
-(vip-set-mode-vars-for 'emacs-state)
-(setq result (eval form))
-(if (not (equal buff (current-buffer))) ; cmd switched buffer
-	(save-excursion
-	  (set-buffer buff)
-	  (vip-set-mode-vars-for vip-current-state)))
-(vip-set-mode-vars-for vip-current-state)
-result))
-;; This is needed because minor modes sometimes override essential Viper
-;; bindings. By letting Viper know which files these modes are in, it will
-;; arrange to reorganize minor-mode-map-alist so that things will work right.
-(defun vip-harness-minor-mode (load-file)
-"Familiarize Viper with a minor mode defined in LOAD_FILE.
-Minor modes that have their own keymaps may overshadow Viper keymaps.
-This function is designed to make Viper aware of the packages that define
-such minor modes.
-Usage:
-(vip-harness-minor-mode load-file)
-LOAD-FILE is a name of the file where the specific minor mode is defined.
-Suffixes such as .el or .elc should be stripped."
-(interactive "sEnter name of the load file: ")
-(vip-eval-after-load load-file '(vip-normalize-minor-mode-map-alist))
-;; Change the default for minor-mode-map-alist each time a harnessed minor
-;; mode adds its own keymap to the a-list.
-(vip-eval-after-load
-load-file '(setq-default minor-mode-map-alist minor-mode-map-alist))
-)
-(defun vip-ESC (arg)
-"Emulate ESC key in Emacs.
-Prevents multiple escape keystrokes if vip-no-multiple-ESC is true.
-If vip-no-multiple-ESC is 'twice double ESC would ding in vi-state.
-Other ESC sequences are emulated via the current Emacs's major mode
-keymap. This is more convenient on TTYs, since this won't block
-function keys such as up,down, etc. ESC will also will also work as
-a Meta key in this case. When vip-no-multiple-ESC is nil, ESC functions
-as a Meta key and any number of multiple escapes is allowed."
-(interactive "P")
-(let (char)
-(cond ((and (not vip-no-multiple-ESC) (eq vip-current-state 'vi-state))
-	   (setq char (vip-read-char-exclusive))
-	   (vip-escape-to-emacs arg (list ?\e char) ))
-	  ((and (eq vip-no-multiple-ESC 'twice)
-		(eq vip-current-state 'vi-state))
-	   (setq char (vip-read-char-exclusive))
-	   (if (= char (string-to-char vip-ESC-key))
-	       (ding)
-	     (vip-escape-to-emacs arg (list ?\e char) )))
-	  (t (ding)))
-))
-(defun vip-alternate-Meta-key (arg)
-"Simulate Emacs Meta key."
-(interactive "P")
-(sit-for 1) (message "ESC-")
-(vip-escape-to-emacs arg '(?\e)))
-(defun vip-toggle-key-action ()
-"Action bound to `vip-toggle-key'."
-(interactive)
-(if (and (< vip-expert-level 2) (equal vip-toggle-key "\C-z"))
-(if (vip-window-display-p)
-	  (vip-iconify)
-	(suspend-emacs))
-(vip-change-state-to-emacs)))
-;; Intercept ESC sequences on dumb terminals.
-;; Based on the idea contributed by Marcelino Veiga Tuimil <mveiga@dit.upm.es>
-;; Check if last key was ESC and if so try to reread it as a function key.
-;; But only if there are characters to read during a very short time.
-;; Returns the last event, if any.
-(defun vip-envelop-ESC-key ()
-(let ((event last-input-event)
-	(keyseq [nil])
-	inhibit-quit)
-(if (vip-ESC-event-p event)
-	(progn
-	  (if (vip-fast-keysequence-p)
-	      (progn
-		(let (minor-mode-map-alist)
-		  (vip-set-unread-command-events event)
-		  (setq keyseq
-			(funcall
-			 (ad-get-orig-definition 'read-key-sequence) nil))
-		  ) ; let
-		;; If keyseq translates into something that still has ESC
-		;; at the beginning, separate ESC from the rest of the seq.
-		;; In XEmacs we check for events that are keypress meta-key
-		;; and convert them into [escape key]
-		;;
-		;; This is needed for the following reason:
-		;; If ESC is the first symbol, we interpret it as if the
-		;; user typed ESC and then quickly some other symbols.
-		;; If ESC is not the first one, then the key sequence
-		;; entered was apparently translated into a function key or
-		;; something (e.g., one may have
-		;; (define-key function-key-map "\e[192z" [f11])
-		;; which would translate the escape-sequence generated by
-		;; f11 in an xterm window into the symbolic key f11.
-		;;
-		;; If `first-key' is not an ESC event, we make it into the
-		;; last-command-event in order to pretend that this key was
-		;; pressed. This is needed to allow arrow keys to be bound to
-		;; macros. Otherwise, vip-exec-mapped-kbd-macro will think that
-		;; the last event was ESC and so it'll execute whatever is
-		;; bound to ESC. (Viper macros can't be bound to
-		;; ESC-sequences).
-		(let* ((first-key (elt keyseq 0))
-		       (key-mod (event-modifiers first-key)))
-		  (cond ((vip-ESC-event-p first-key)
-			 ;; put keys following ESC on the unread list
-			 ;; and return ESC as the key-sequence
-			 (vip-set-unread-command-events (subseq keyseq 1))
-			 (setq last-input-event event
-			       keyseq (if vip-emacs-p
-					  "\e"
-					(vector (character-to-event ?\e)))))
-			((and vip-xemacs-p
-			      (key-press-event-p first-key)
-			      (equal '(meta) key-mod))
-			 (vip-set-unread-command-events
-			  (vconcat (vector
-				    (character-to-event (event-key first-key)))
-				   (subseq keyseq 1)))
-			 (setq last-input-event event
-			       keyseq (vector (character-to-event ?\e))))
-			((eventp first-key)
-			 (setq last-command-event (vip-copy-event first-key)))
-			))
-		) ; end progn
-	    ;; this is escape event with nothing after it
-	    ;; put in unread-command-event and then re-read
-	    (vip-set-unread-command-events event)
-	    (setq keyseq
-		  (funcall (ad-get-orig-definition 'read-key-sequence) nil))
-	    ))
-;; not an escape event
-(setq keyseq (vector event)))
-keyseq))
-(defadvice read-key-sequence (around vip-read-keyseq-ad activate)
-"Harness to work for Viper. This advice is harmless---don't worry!"
-(let (inhibit-quit event keyseq)
-(setq keyseq ad-do-it)
-(setq event (if vip-xemacs-p
-		    (elt keyseq 0) ; XEmacs returns vector of events
-		  (elt (listify-key-sequence keyseq) 0)))
-(if (vip-ESC-event-p event)
-	(let (unread-command-events)
-	  (vip-set-unread-command-events keyseq)
-	  (if (vip-fast-keysequence-p)
-	      (let ((vip-vi-global-user-minor-mode  nil)
-		    (vip-vi-local-user-minor-mode  nil)
-		    (vip-replace-minor-mode nil) ; actually unnecessary
-		    (vip-insert-global-user-minor-mode  nil)
-		    (vip-insert-local-user-minor-mode  nil))
-		(setq keyseq ad-do-it))
-	    (setq keyseq ad-do-it))))
-keyseq))
-(defadvice describe-key (before vip-read-keyseq-ad protect activate)
-"Force to read key via `read-key-sequence'."
-(interactive (list (vip-events-to-keys
-		      (read-key-sequence "Describe key: ")))))
-(defadvice describe-key-briefly (before vip-read-keyseq-ad protect activate)
-"Force to read key via `read-key-sequence'."
-(interactive (list (vip-events-to-keys
-		      (read-key-sequence "Describe key briefly: ")))))
-;; Listen to ESC key.
-;; If a sequence of keys starting with ESC is issued with very short delays,
-;; interpret these keys in Emacs mode, so ESC won't be interpreted as a Vi key.
-(defun vip-intercept-ESC-key ()
-"Function that implements ESC key in Viper emulation of Vi."
-(interactive)
-(let ((cmd (or (key-binding (vip-envelop-ESC-key))
-		 '(lambda () (interactive) (error "")))))
-;; call the actual function to execute ESC (if no other symbols followed)
-;; or the key bound to the ESC sequence (if the sequence was issued
-;; with very short delay between characters.
-(if (eq cmd 'vip-intercept-ESC-key)
-	(setq cmd
-	      (cond ((eq vip-current-state 'vi-state)
-		     'vip-ESC)
-		    ((eq vip-current-state 'insert-state)
-		     'vip-exit-insert-state)
-		    ((eq vip-current-state 'replace-state)
-		     'vip-replace-state-exit-cmd)
-		    (t 'vip-change-state-to-vi)
-		    )))
-(call-interactively cmd)))
-;; prefix argument for Vi mode
-;; In Vi mode, prefix argument is a dotted pair (NUM . COM) where NUM
-;; represents the numeric value of the prefix argument and COM represents
-;; command prefix such as "c", "d", "m" and "y".
-;; Get value part of prefix-argument ARG.
-(defsubst vip-p-val (arg)
-(cond ((null arg) 1)
-	((consp arg)
-	 (if (or (null (car arg)) (equal (car arg) '(nil)))
-	     1 (car arg)))
-	(t arg)))
-;; Get raw value part of prefix-argument ARG.
-(defsubst vip-P-val (arg)
-(cond ((consp arg) (car arg))
-	(t arg)))
-;; Get com part of prefix-argument ARG.
-(defsubst vip-getcom (arg)
-(cond ((null arg) nil)
-	((consp arg) (cdr arg))
-	(t nil)))
-;; Get com part of prefix-argument ARG and modify it.
-(defun vip-getCom (arg)
-(let ((com (vip-getcom arg)))
-(cond ((equal com ?c) ?C)
-	  ((equal com ?d) ?D)
-	  ((equal com ?y) ?Y)
-	  (t com))))
-;; Compute numeric prefix arg value.
-;; Invoked by EVENT. COM is the command part obtained so far.
-(defun vip-prefix-arg-value (event com)
-(let (value func)
-;; read while number
-(while (and (vip-characterp event) (>= event ?0) (<= event ?9))
-(setq value (+ (* (if (integerp value) value 0) 10) (- event ?0)))
-(setq event (vip-read-event-convert-to-char)))
-(setq prefix-arg value)
-(if com (setq prefix-arg (cons prefix-arg com)))
-(while (eq event ?U)
-(vip-describe-arg prefix-arg)
-(setq event (vip-read-event-convert-to-char)))
-(if (or com (and (not (eq vip-current-state 'vi-state))
-		     ;; make sure it is a Vi command
-		     (vip-characterp event) (vip-vi-command-p event)
-		     ))
-	;; If appears to be one of the vi commands,
-	;; then execute it with funcall and clear prefix-arg in order to not
-	;; confuse subsequent commands
-	(progn
-	  ;; last-command-char is the char we want emacs to think was typed
-	  ;; last. If com is not nil, the vip-digit-argument command was called
-	  ;; from within vip-prefix-arg command, such as `d', `w', etc., i.e.,
-	  ;; the user typed, say, d2. In this case, `com' would be `d', `w',
-	  ;; etc.
-	  ;; If vip-digit-argument was invoked by vip-escape-to-vi (which is
-	  ;; indicated by the fact that the current state is not vi-state),
-	  ;; then `event' represents the vi command to be executed (e.g., `d',
-	  ;; `w', etc). Again, last-command-char must make emacs believe that
-	  ;; this is the command we typed.
-	  (setq last-command-char (or com event))
-	  (setq func (vip-exec-form-in-vi
-		      (` (key-binding (char-to-string (, event))))))
-	  (funcall func prefix-arg)
-	  (setq prefix-arg nil))
-;; some other command -- let emacs do it in its own way
-(vip-set-unread-command-events event))
-))
-;; Vi operator as prefix argument."
-(defun vip-prefix-arg-com (char value com)
-(let ((cont t)
-	cmd-info mv-or-digit-cmd)
-(while (and cont
-		(memq char
-		      (list ?c ?d ?y ?! ?< ?> ?= ?# ?r ?R ?\"
-			    vip-buffer-search-char)))
-(if com
-	  ;; this means that we already have a command character, so we
-	  ;; construct a com list and exit while.  however, if char is "
-	  ;; it is an error.
-	  (progn
-	    ;; new com is (CHAR . OLDCOM)
-	    (if (memq char '(?# ?\")) (error ""))
-	    (setq com (cons char com))
-	    (setq cont nil))
-	;; If com is nil we set com as char, and read more.  Again, if char
-	;; is ", we read the name of register and store it in vip-use-register.
-	;; if char is !, =, or #, a complete com is formed so we exit the
-	;; while loop.
-	(cond ((memq char '(?! ?=))
-	       (setq com char)
-	       (setq char (read-char))
-	       (setq cont nil))
-	      ((= char ?#)
-	       ;; read a char and encode it as com
-	       (setq com (+ 128 (read-char)))
-	       (setq char (read-char)))
-	      ((= char ?\")
-	       (let ((reg (read-char)))
-		 (if (vip-valid-register reg)
-		     (setq vip-use-register reg)
-		   (error ""))
-		 (setq char (read-char))))
-	      (t
-	       (setq com char)
-	       (setq char (read-char))))))
-(if (atom com)
-;; `com' is a single char, so we construct the command argument
-;; and if `char' is `?', we describe the arg; otherwise
-;; we prepare the command that will be executed at the end.
-(progn
-	(setq cmd-info (cons value com))
-	(while (= char ?U)
-	  (vip-describe-arg cmd-info)
-	  (setq char (read-char)))
-	;; `char' is a movement cmd, a digit arg cmd, or a register cmd---so we
-	;; execute it at the very end
-	(or (vip-movement-command-p char)
-	    (vip-digit-command-p char)
-	    (vip-regsuffix-command-p char)
-	    (error ""))
-	(setq mv-or-digit-cmd
-	      (vip-exec-form-in-vi
-	       (` (key-binding (char-to-string (, char)))))))
-;; as com is non-nil, this means that we have a command to execute
-(if (memq (car com) '(?r ?R))
-	;; execute apropriate region command.
-	(let ((char (car com)) (com (cdr com)))
-	  (setq prefix-arg (cons value com))
-	  (if (= char ?r) (vip-region prefix-arg)
-	    (vip-Region prefix-arg))
-	  ;; reset prefix-arg
-	  (setq prefix-arg nil))
-;; otherwise, reset prefix arg and call appropriate command
-(setq value (if (null value) 1 value))
-(setq prefix-arg nil)
-(cond ((equal com '(?c . ?c)) (vip-line (cons value ?C)))
-	    ((equal com '(?d . ?d)) (vip-line (cons value ?D)))
-	    ((equal com '(?d . ?y)) (vip-yank-defun))
-	    ((equal com '(?y . ?y)) (vip-line (cons value ?Y)))
-	    ((equal com '(?< . ?<)) (vip-line (cons value ?<)))
-	    ((equal com '(?> . ?>)) (vip-line (cons value ?>)))
-	    ((equal com '(?! . ?!)) (vip-line (cons value ?!)))
-	    ((equal com '(?= . ?=)) (vip-line (cons value ?=)))
-	    (t (error "")))))
-(if mv-or-digit-cmd
-(progn
-	(setq last-command-char char)
-	(setq last-command-event
-	      (vip-copy-event
-	       (if vip-xemacs-p (character-to-event char) char)))
-	(condition-case nil
-	    (funcall mv-or-digit-cmd cmd-info)
-	  (error
-	   (error "")))))
-))
-(defun vip-describe-arg (arg)
-(let (val com)
-(setq val (vip-P-val arg)
-	  com (vip-getcom arg))
-(if (null val)
-	(if (null com)
-	    (message "Value is nil, and command is nil")
-	  (message "Value is nil, and command is `%c'" com))
-(if (null com)
-	  (message "Value is `%d', and command is nil" val)
-	(message "Value is `%d', and command is `%c'" val com)))))
-(defun vip-digit-argument (arg)
-"Begin numeric argument for the next command."
-(interactive "P")
-(vip-leave-region-active)
-(vip-prefix-arg-value
-last-command-char (if (consp arg) (cdr arg) nil)))
-(defun vip-command-argument (arg)
-"Accept a motion command as an argument."
-(interactive "P")
-(let ((vip-inside-command-argument-action t))
-(condition-case nil
-	(vip-prefix-arg-com
-	 last-command-char
-	 (cond ((null arg) nil)
-	       ((consp arg) (car arg))
-	       ((integerp arg) arg)
-	       (t (error vip-InvalidCommandArgument)))
-	 (cond ((null arg) nil)
-	       ((consp arg) (cdr arg))
-	       ((integerp arg) nil)
-	       (t (error vip-InvalidCommandArgument))))
-(quit (setq vip-use-register nil)
-	    (signal 'quit nil)))
-(vip-deactivate-mark)))
-;; repeat last destructive command
-;; Append region to text in register REG.
-;; START and END are buffer positions indicating what to append.
-(defsubst vip-append-to-register (reg start end)
-(set-register reg (concat (if (stringp (get-register reg))
-				(get-register reg) "")
-			    (buffer-substring start end))))
-;; Saves last inserted text for possible use by vip-repeat command.
-(defun vip-save-last-insertion (beg end)
-(setq vip-last-insertion (buffer-substring beg end))
-(or (< (length vip-d-com) 5)
-(setcar (nthcdr 4 vip-d-com) vip-last-insertion))
-(or (null vip-command-ring)
-(ring-empty-p vip-command-ring)
-(progn
-	(setcar (nthcdr 4 (vip-current-ring-item vip-command-ring))
-		vip-last-insertion)
-	;; del most recent elt, if identical to the second most-recent
-	(vip-cleanup-ring vip-command-ring)))
-)
-(defsubst vip-yank-last-insertion ()
-"Inserts the text saved by the previous vip-save-last-insertion command."
-(condition-case nil
-(insert vip-last-insertion)
-(error nil)))
-;; define functions to be executed
-;; invoked by the `C' command
-(defun vip-exec-change (m-com com)
-(or (and (markerp vip-com-point) (marker-position vip-com-point))
-(set-marker vip-com-point (point) (current-buffer)))
-;; handle C cmd at the eol and at eob.
-(if (or (and (eolp) (= vip-com-point (point)))
-	  (= vip-com-point (point-max)))
-(progn
-	(insert " ")(backward-char 1)))
-(if (= vip-com-point (point))
-(vip-forward-char-carefully))
-(if (= com ?c)
-(vip-change vip-com-point (point))
-(vip-change-subr vip-com-point (point))))
-;; this is invoked by vip-substitute-line
-(defun vip-exec-Change (m-com com)
-(save-excursion
-(set-mark vip-com-point)
-(vip-enlarge-region (mark t) (point))
-(if vip-use-register
-	(progn
-	  (cond ((vip-valid-register vip-use-register '(letter digit))
-		 ;;(vip-valid-register vip-use-register '(letter)
-		 (copy-to-register
-		  vip-use-register (mark t) (point) nil))
-		((vip-valid-register vip-use-register '(Letter))
-		 (vip-append-to-register
-		  (downcase vip-use-register) (mark t) (point)))
-		(t (setq vip-use-register nil)
-		   (error vip-InvalidRegister vip-use-register)))
-	  (setq vip-use-register nil)))
-(delete-region (mark t) (point)))
-(open-line 1)
-(if (= com ?C) (vip-change-mode-to-insert) (vip-yank-last-insertion)))
-(defun vip-exec-delete (m-com com)
-(or (and (markerp vip-com-point) (marker-position vip-com-point))
-(set-marker vip-com-point (point) (current-buffer)))
-(if vip-use-register
-(progn
-	(cond ((vip-valid-register vip-use-register '(letter digit))
-	       ;;(vip-valid-register vip-use-register '(letter))
-	       (copy-to-register
-		vip-use-register vip-com-point (point) nil))
-	      ((vip-valid-register vip-use-register '(Letter))
-	       (vip-append-to-register
-		(downcase vip-use-register) vip-com-point (point)))
-	      (t (setq vip-use-register nil)
-		 (error vip-InvalidRegister vip-use-register)))
-	(setq vip-use-register nil)))
-(setq last-command
-	(if (eq last-command 'd-command) 'kill-region nil))
-(kill-region vip-com-point (point))
-(setq this-command 'd-command)
-(if vip-ex-style-motion
-(if (and (eolp) (not (bolp))) (backward-char 1))))
-(defun vip-exec-Delete (m-com com)
-(save-excursion
-(set-mark vip-com-point)
-(vip-enlarge-region (mark t) (point))
-(if vip-use-register
-	(progn
-	  (cond ((vip-valid-register vip-use-register '(letter digit))
-		 ;;(vip-valid-register vip-use-register '(letter))
-		 (copy-to-register
-		  vip-use-register (mark t) (point) nil))
-		((vip-valid-register vip-use-register '(Letter))
-		 (vip-append-to-register
-		  (downcase vip-use-register) (mark t) (point)))
-		(t (setq vip-use-register nil)
-		   (error vip-InvalidRegister vip-use-register)))
-	  (setq vip-use-register nil)))
-(setq last-command
-	  (if (eq last-command 'D-command) 'kill-region nil))
-(kill-region (mark t) (point))
-(if (eq m-com 'vip-line) (setq this-command 'D-command)))
-(back-to-indentation))
-(defun vip-exec-yank (m-com com)
-(or (and (markerp vip-com-point) (marker-position vip-com-point))
-(set-marker vip-com-point (point) (current-buffer)))
-(if vip-use-register
-(progn
-	(cond ((vip-valid-register vip-use-register '(letter digit))
-	       ;; (vip-valid-register vip-use-register '(letter))
-	       (copy-to-register
-		vip-use-register vip-com-point (point) nil))
-	      ((vip-valid-register vip-use-register '(Letter))
-	       (vip-append-to-register
-		(downcase vip-use-register) vip-com-point (point)))
-	      (t (setq vip-use-register nil)
-		 (error vip-InvalidRegister vip-use-register)))
-	(setq vip-use-register nil)))
-(setq last-command nil)
-(copy-region-as-kill vip-com-point (point))
-(goto-char vip-com-point))
-(defun vip-exec-Yank (m-com com)
-(save-excursion
-(set-mark vip-com-point)
-(vip-enlarge-region (mark t) (point))
-(if vip-use-register
-	(progn
-	  (cond ((vip-valid-register vip-use-register '(letter digit))
-		 (copy-to-register
-		  vip-use-register (mark t) (point) nil))
-		((vip-valid-register vip-use-register '(Letter))
-		 (vip-append-to-register
-		  (downcase vip-use-register) (mark t) (point)))
-		(t (setq vip-use-register nil)
-		   (error vip-InvalidRegister  vip-use-register)))
-	  (setq vip-use-register nil)))
-(setq last-command nil)
-(copy-region-as-kill (mark t) (point)))
-(vip-deactivate-mark)
-(goto-char vip-com-point))
-(defun vip-exec-bang (m-com com)
-(save-excursion
-(set-mark vip-com-point)
-(vip-enlarge-region (mark t) (point))
-(shell-command-on-region
-(mark t) (point)
-(if (= com ?!)
-	 (setq vip-last-shell-com
-	       (vip-read-string-with-history
-		"!"
-		nil
-		'vip-shell-history
-		(car vip-shell-history)
-		))
-vip-last-shell-com)
-t)))
-(defun vip-exec-equals (m-com com)
-(save-excursion
-(set-mark vip-com-point)
-(vip-enlarge-region (mark t) (point))
-(if (> (mark t) (point)) (exchange-point-and-mark))
-(indent-region (mark t) (point) nil)))
-(defun vip-exec-shift (m-com com)
-(save-excursion
-(set-mark vip-com-point)
-(vip-enlarge-region (mark t) (point))
-(if (> (mark t) (point)) (exchange-point-and-mark))
-(indent-rigidly (mark t) (point)
-		    (if (= com ?>)
-			vip-shift-width
-		      (- vip-shift-width))))
-;; return point to where it was before shift
-(goto-char vip-com-point))
-;; this is needed because some commands fake com by setting it to ?r, which
-;; denotes repeated insert command.
-(defsubst vip-exec-dummy (m-com com)
-nil)
-(defun vip-exec-buffer-search (m-com com)
-(setq vip-s-string (buffer-substring (point) vip-com-point))
-(setq vip-s-forward t)
-(setq vip-search-history (cons vip-s-string vip-search-history))
-(vip-search vip-s-string vip-s-forward 1))
-(defvar vip-exec-array (make-vector 128 nil))
-;; Using a dispatch array allows adding functions like buffer search
-;; without affecting other functions. Buffer search can now be bound
-;; to any character.
-(aset vip-exec-array ?c 'vip-exec-change)
-(aset vip-exec-array ?C 'vip-exec-Change)
-(aset vip-exec-array ?d 'vip-exec-delete)
-(aset vip-exec-array ?D 'vip-exec-Delete)
-(aset vip-exec-array ?y 'vip-exec-yank)
-(aset vip-exec-array ?Y 'vip-exec-Yank)
-(aset vip-exec-array ?r 'vip-exec-dummy)
-(aset vip-exec-array ?! 'vip-exec-bang)
-(aset vip-exec-array ?< 'vip-exec-shift)
-(aset vip-exec-array ?> 'vip-exec-shift)
-(aset vip-exec-array ?= 'vip-exec-equals)
-;; This function is called by various movement commands to execute a
-;; destructive command on the region specified by the movement command. For
-;; instance, if the user types cw, then the command vip-forward-word will
-;; call vip-execute-com to execute vip-exec-change, which eventually will
-;; call vip-change to invoke the replace mode on the region.
-;;
-;; The list (M-COM VAL COM REG INSETED-TEXT COMMAND-KEYS) is set to
-;; vip-d-com for later use by vip-repeat.
-(defun vip-execute-com (m-com val com)
-(let ((reg vip-use-register))
-;; this is the special command `#'
-(if (> com 128)
-	(vip-special-prefix-com (- com 128))
-(let ((fn (aref vip-exec-array (if (< com 0) (- com) com))))
-	(if (null fn)
-	    (error "%c: %s" com vip-InvalidViCommand)
-	  (funcall fn m-com com))))
-(if (vip-dotable-command-p com)
-	(vip-set-destructive-command
-	 (list m-com val
-	       (if (memq com (list ?c ?C ?!)) (- com) com)
-	       reg nil nil)))
-))
-(defun vip-repeat (arg)
-"Re-execute last destructive command.
-Use the info in vip-d-com, which has the form
-\(com val ch reg inserted-text command-keys\),
-where `com' is the command to be re-executed, `val' is the
-argument to `com', `ch' is a flag for repeat, and `reg' is optional;
-if it exists, it is the name of the register for `com'.
-If the prefix argument, ARG, is non-nil, it is used instead of `val'."
-(interactive "P")
-(let ((save-point (point)) ; save point before repeating prev cmd
-	;; Pass along that we are repeating a destructive command
-	;; This tells vip-set-destructive-command not to update
-	;; vip-command-ring
-	(vip-intermediate-command 'vip-repeat))
-(if (eq last-command 'vip-undo)
-	;; if the last command was vip-undo, then undo-more
-	(vip-undo-more)
-;; otherwise execute the command stored in vip-d-com.  if arg is non-nil
-;; its prefix value is used as new prefix value for the command.
-(let ((m-com (car vip-d-com))
-	    (val (vip-P-val arg))
-	    (com (nth 2 vip-d-com))
-	    (reg (nth 3 vip-d-com)))
-(if (null val) (setq val (nth 1 vip-d-com)))
-(if (null m-com) (error "No previous command to repeat."))
-(setq vip-use-register reg)
-	(if (nth 4 vip-d-com) ; text inserted by command
-	    (setq vip-last-insertion (nth 4 vip-d-com)
-		  vip-d-char (nth 4 vip-d-com)))
-(funcall m-com (cons val com))
-(if (and vip-keep-point-on-repeat (< save-point (point)))
-	    (goto-char save-point)) ; go back to before repeat.
-	(if (and (eolp) (not (bolp)))
-	    (backward-char 1))
-))
-(if vip-undo-needs-adjustment (vip-adjust-undo)) ; take care of undo
-;; If the prev cmd was rotating the command ring, this means that `.' has
-;; just executed a command from that ring. So, push it on the ring again.
-;; If we are just executing previous command , then don't push vip-d-com
-;; because vip-d-com is not fully constructed in this case (its keys and
-;; the inserted text may be nil). Besides, in this case, the command
-;; executed by `.' is already on the ring.
-(if (eq last-command 'vip-display-current-destructive-command)
-(vip-push-onto-ring vip-d-com 'vip-command-ring))
-(vip-deactivate-mark)
-))
-(defun vip-repeat-from-history ()
-"Repeat a destructive command from history.
-Doesn't change vip-command-ring in any way, so `.' will work as before
-executing this command.
-This command is supposed to be bound to a two-character Vi macro where
-the second character is a digit 0 to 9. The digit indicates which
-history command to execute. `<char>0' is equivalent to `.', `<char>1'
-invokes the command before that, etc."
-(interactive)
-(let* ((vip-intermediate-command 'repeating-display-destructive-command)
-	 (idx (cond (vip-this-kbd-macro
-		      (string-to-number
-		       (symbol-name (elt vip-this-kbd-macro 1))))
-		    (t 0)))
-	 (num idx)
-	 (vip-d-com vip-d-com))
-(or (and (numberp num) (<= 0 num) (<= num 9))
-	(progn
-	  (setq idx 0
-		num 0)
-	  (message
-	   "`vip-repeat-from-history' must be invoked as a Vi macro bound to `<key><digit>'")))
-(while (< 0 num)
-(setq vip-d-com (vip-special-ring-rotate1 vip-command-ring -1))
-(setq num (1- num)))
-(vip-repeat nil)
-(while (> idx num)
-(vip-special-ring-rotate1 vip-command-ring 1)
-(setq num (1+ num)))
-))
-;; The hash-command. It is invoked interactively by the key sequence #<char>.
-;; The chars that can follow `#' are determined by vip-hash-command-p
-(defun vip-special-prefix-com (char)
-(cond ((= char ?c)
-	 (downcase-region (min vip-com-point (point))
-			  (max vip-com-point (point))))
-	((= char ?C)
-	 (upcase-region (min vip-com-point (point))
-			(max vip-com-point (point))))
-	((= char ?g)
-	 (push-mark vip-com-point t)
-	 (vip-global-execute))
-	((= char ?q)
-	 (push-mark vip-com-point t)
-	 (vip-quote-region))
-	((= char ?s) (funcall vip-spell-function vip-com-point (point)))
-	(t (error "#%c: %s" char vip-InvalidViCommand))))
-;; undoing
-(defun vip-undo ()
-"Undo previous change."
-(interactive)
-(message "undo!")
-(let ((modified (buffer-modified-p))
-(before-undo-pt (point-marker))
-	(after-change-functions after-change-functions)
-	undo-beg-posn undo-end-posn)
-;; no need to remove this hook, since this var has scope inside a let.
-(add-hook 'after-change-functions
-	      '(lambda (beg end len)
-		 (setq undo-beg-posn beg
-		       undo-end-posn (or end beg))))
-(undo-start)
-(undo-more 2)
-(setq undo-beg-posn (or undo-beg-posn before-undo-pt)
-	  undo-end-posn (or undo-end-posn undo-beg-posn))
-(goto-char undo-beg-posn)
-(sit-for 0)
-(if (and vip-keep-point-on-undo
-	     (pos-visible-in-window-p before-undo-pt))
-	(progn
-	  (push-mark (point-marker) t)
-	  (vip-sit-for-short 300)
-	  (goto-char undo-end-posn)
-	  (vip-sit-for-short 300)
-	  (if (and (> (abs (- undo-beg-posn before-undo-pt)) 1)
-		  (> (abs (- undo-end-posn before-undo-pt)) 1))
-	      (goto-char before-undo-pt)
-	    (goto-char undo-beg-posn)))
-(push-mark before-undo-pt t))
-(if (and (eolp) (not (bolp))) (backward-char 1))
-(if (not modified) (set-buffer-modified-p t)))
-(setq this-command 'vip-undo))
-;; Continue undoing previous changes.
-(defun vip-undo-more ()
-(message "undo more!")
-(condition-case nil
-(undo-more 1)
-(error (beep)
-	   (message "No further undo information in this buffer")))
-(if (and (eolp) (not (bolp))) (backward-char 1))
-(setq this-command 'vip-undo))
-;; The following two functions are used to set up undo properly.
-;; In VI, unlike Emacs, if you open a line, say, and add a bunch of lines,
-;; they are undone all at once.
-(defun vip-adjust-undo ()
-(let ((inhibit-quit t)
-	tmp tmp2)
-(setq vip-undo-needs-adjustment nil)
-(if (listp buffer-undo-list)
-	(if (setq tmp (memq vip-buffer-undo-list-mark buffer-undo-list))
-	    (progn
-	      (setq tmp2 (cdr tmp)) ; the part after mark
-	      ;; cut tail from buffer-undo-list temporarily by direct
-	      ;; manipulation with pointers in buffer-undo-list
-	      (setcdr tmp nil)
-	      (setq buffer-undo-list (delq nil buffer-undo-list))
-	      (setq buffer-undo-list
-		    (delq vip-buffer-undo-list-mark buffer-undo-list))
-	      ;; restore tail of buffer-undo-list
-	      (setq buffer-undo-list (nconc buffer-undo-list tmp2)))
-	  (setq buffer-undo-list (delq nil buffer-undo-list))))))
-(defun vip-set-complex-command-for-undo ()
-(if (listp buffer-undo-list)
-(if (not vip-undo-needs-adjustment)
-	  (let ((inhibit-quit t))
-	    (setq buffer-undo-list
-		  (cons vip-buffer-undo-list-mark buffer-undo-list))
-	    (setq vip-undo-needs-adjustment t)))))
-(defun vip-display-current-destructive-command ()
-(let ((text (nth 4 vip-d-com))
-	(keys (nth 5 vip-d-com))
-	(max-text-len 30))
-(setq this-command 'vip-display-current-destructive-command)
-(message " `.' runs  %s%s"
-	     (concat "`" (vip-array-to-string keys) "'")
-	     (vip-abbreviate-string text max-text-len
-				    "  inserting  `" "'" "    ......."))
-))
-;; don't change vip-d-com if it was vip-repeat command invoked with `.'
-;; or in some other way (non-interactively).
-(defun vip-set-destructive-command (list)
-(or (eq vip-intermediate-command 'vip-repeat)
-(progn
-	(setq vip-d-com list)
-	(setcar (nthcdr 5 vip-d-com)
-		(vip-array-to-string (this-command-keys)))
-	(vip-push-onto-ring vip-d-com 'vip-command-ring))))
-(defun vip-prev-destructive-command (next)
-"Find previous destructive command in the history of destructive commands.
-With prefix argument, find next destructive command."
-(interactive "P")
-(let (cmd vip-intermediate-command)
-(if (eq last-command 'vip-display-current-destructive-command)
-	;; repeated search through command history
-	(setq vip-intermediate-command 'repeating-display-destructive-command)
-;; first search through command history--set temp ring
-(setq vip-temp-command-ring (copy-list vip-command-ring)))
-(setq cmd (if next
-		  (vip-special-ring-rotate1 vip-temp-command-ring 1)
-		(vip-special-ring-rotate1 vip-temp-command-ring -1)))
-(if (null cmd)
-	()
-(setq vip-d-com cmd))
-(vip-display-current-destructive-command)))
-(defun vip-next-destructive-command ()
-"Find next destructive command in the history of destructive commands."
-(interactive)
-(vip-prev-destructive-command 'next))
-(defun vip-insert-prev-from-insertion-ring (arg)
-"Cycle through insertion ring in the direction of older insertions.
-Undoes previous insertion and inserts new.
-With prefix argument, cycles in the direction of newer elements.
-In minibuffer, this command executes whatever the invocation key is bound
-to in the global map, instead of cycling through the insertion ring."
-(interactive "P")
-(let (vip-intermediate-command)
-(if (eq last-command 'vip-insert-from-insertion-ring)
-	(progn  ; repeated search through insertion history
-	  (setq vip-intermediate-command 'repeating-insertion-from-ring)
-	  (if (eq vip-current-state 'replace-state)
-	      (undo 1)
-	    (if vip-last-inserted-string-from-insertion-ring
-		(backward-delete-char
-		 (length vip-last-inserted-string-from-insertion-ring))))
-	  )
-;;first search through insertion history
-(setq vip-temp-insertion-ring (copy-list vip-insertion-ring)))
-(setq this-command 'vip-insert-from-insertion-ring)
-;; so that things will be undone properly
-(setq buffer-undo-list (cons nil buffer-undo-list))
-(setq vip-last-inserted-string-from-insertion-ring
-	  (vip-special-ring-rotate1 vip-temp-insertion-ring (if arg 1 -1)))
-;; this change of vip-intermediate-command must come after
-;; vip-special-ring-rotate1, so that the ring will rotate, but before the
-;; insertion.
-(setq vip-intermediate-command nil)
-(if vip-last-inserted-string-from-insertion-ring
-	(insert vip-last-inserted-string-from-insertion-ring))
-))
-(defun vip-insert-next-from-insertion-ring ()
-"Cycle through insertion ring in the direction of older insertions.
-Undo previous insertion and inserts new."
-(interactive)
-(vip-insert-prev-from-insertion-ring 'next))
-;; some region utilities
-;; If at the last line of buffer, add \\n before eob, if newline is missing.
-(defun vip-add-newline-at-eob-if-necessary ()
-(save-excursion
-(end-of-line)
-;; make sure all lines end with newline, unless in the minibuffer or
-;; when requested otherwise (require-final-newline is nil)
-(if (and (eobp)
-	       (not (bolp))
-	       require-final-newline
-	       (not (vip-is-in-minibuffer))
-	       (not buffer-read-only))
-	  (insert "\n"))))
-(defun vip-yank-defun ()
-(mark-defun)
-(copy-region-as-kill (point) (mark t)))
-;; Enlarge region between BEG and END.
-(defun vip-enlarge-region (beg end)
-(or beg (setq beg end)) ; if beg is nil, set to end
-(or end (setq end beg)) ; if end is nil, set to beg
-(if (< beg end)
-(progn (goto-char beg) (set-mark end))
-(goto-char end)
-(set-mark beg))
-(beginning-of-line)
-(exchange-point-and-mark)
-(if (or (not (eobp)) (not (bolp))) (forward-line 1))
-(if (not (eobp)) (beginning-of-line))
-(if (> beg end) (exchange-point-and-mark)))
-;; Quote region by each line with a user supplied string.
-(defun vip-quote-region ()
-(setq vip-quote-string
-	(vip-read-string-with-history
-	 "Quote string: "
-	 nil
-	 'vip-quote-region-history
-	 vip-quote-string))
-(vip-enlarge-region (point) (mark t))
-(if (> (point) (mark t)) (exchange-point-and-mark))
-(insert vip-quote-string)
-(beginning-of-line)
-(forward-line 1)
-(while (and (< (point) (mark t)) (bolp))
-(insert vip-quote-string)
-(beginning-of-line)
-(forward-line 1)))
-;;  Tells whether BEG is on the same line as END.
-;;  If one of the args is nil, it'll return nil.
-(defun vip-same-line (beg end)
-(let ((selective-display nil)
-	 (incr 0)
-	 temp)
-(if (and beg end (> beg end))
-	 (setq temp beg
-	       beg end
-	       end temp))
-(if (and beg end)
-	 (cond ((or (> beg (point-max)) (> end (point-max))) ; out of range
-		nil)
-	       (t
-		;; This 'if' is needed because Emacs treats the next empty line
-		;; as part of the previous line.
-		(if (= (vip-line-pos 'start) end)
-		    (setq incr 1))
-		(<= (+ incr (count-lines beg end)) 1))))
-))
-;; Check if the string ends with a newline.
-(defun vip-end-with-a-newline-p (string)
-(or (string= string "")
-(= (vip-seq-last-elt string) ?\n)))
-(defun vip-tmp-insert-at-eob (msg)
-(let ((savemax (point-max)))
-(goto-char savemax)
-(insert msg)
-(sit-for 2)
-(goto-char savemax) (delete-region (point) (point-max))
-))
-;;; Minibuffer business
-(defsubst vip-set-minibuffer-style ()
-(add-hook 'minibuffer-setup-hook 'vip-minibuffer-setup-sentinel))
-(defun vip-minibuffer-setup-sentinel ()
-(let ((hook (if vip-vi-style-in-minibuffer
-		  'vip-change-state-to-insert
-		'vip-change-state-to-emacs)))
-(funcall hook)
-))
-;; Interpret last event in the local map
-(defun vip-exit-minibuffer ()
-(interactive)
-(let (command)
-(setq command (local-key-binding (char-to-string last-command-char)))
-(if command
-	(command-execute command)
-(exit-minibuffer))))
-;;; Reading string with history
-(defun vip-read-string-with-history (prompt &optional initial
-					    history-var default keymap)
-;; Read string, prompting with PROMPT and inserting the INITIAL
-;; value. Uses HISTORY-VAR. DEFAULT is the default value to accept if the
-;; input is an empty string. Use KEYMAP, if given, or the
-;; minibuffer-local-map.
-;; Default value is displayed until the user types something in the
-;; minibuffer.
-(let ((minibuffer-setup-hook
-	 '(lambda ()
-	    (if (stringp initial)
-		(progn
-		  ;; don't wait if we have unread events or in kbd macro
-		  (or unread-command-events
-		      executing-kbd-macro
-		      (sit-for 840))
-		  (erase-buffer)
-		  (insert initial)))
-	    (vip-minibuffer-setup-sentinel)))
-	(val "")
-	(padding "")
-	temp-msg)
-(setq keymap (or keymap minibuffer-local-map)
-	  initial (or initial "")
-	  temp-msg (if default
-		       (format "(default: %s) " default)
-		     ""))
-(setq vip-incomplete-ex-cmd nil)
-(setq val (read-from-minibuffer prompt
-				    (concat temp-msg initial val padding)
-				    keymap nil history-var))
-(setq minibuffer-setup-hook nil
-	  padding (vip-array-to-string (this-command-keys))
-	  temp-msg "")
-;; the following tries to be smart about what to put in history
-(if (not (string= val (car (eval history-var))))
-	(set history-var (cons val (eval history-var))))
-(if (or (string= (nth 0 (eval history-var)) (nth 1 (eval history-var)))
-	    (string= (nth 0 (eval history-var)) ""))
-	(set history-var (cdr (eval history-var))))
-;; If the user enters nothing but the prev cmd wasn't vip-ex,
-;; vip-command-argument, or `! shell-command', this probably means
-;; that the user typed something then erased. Return "" in this case, not
-;; the default---the default is too confusing in this case.
-(cond ((and (string= val "")
-		(not (string= prompt "!")) ; was a `! shell-command'
-		(not (memq last-command
-			   '(vip-ex
-			     vip-command-argument
-			     t)
-			   )))
-	   "")
-	  ((string= val "") (or default ""))
-	  (t val))
-))
-;; insertion commands
-;; Called when state changes from Insert Vi command mode.
-;; Repeats the insertion command if Insert state was entered with prefix
-;; argument > 1.
-(defun vip-repeat-insert-command ()
-(let ((i-com (car vip-d-com))
-	(val   (nth 1 vip-d-com))
-	(char  (nth 2 vip-d-com)))
-(if (and val (> val 1)) ; first check that val is non-nil
-	(progn
-	  (setq vip-d-com (list i-com (1- val) ?r nil nil nil))
-	  (vip-repeat nil)
-	  (setq vip-d-com (list i-com val char nil nil nil))
-	  ))))
-(defun vip-insert (arg)
-"Insert before point."
-(interactive "P")
-(vip-set-complex-command-for-undo)
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)))
-(vip-set-destructive-command (list 'vip-insert val ?r nil nil nil))
-(if com
-	(vip-loop val (vip-yank-last-insertion))
-(vip-change-state-to-insert))))
-(defun vip-append (arg)
-"Append after point."
-(interactive "P")
-(vip-set-complex-command-for-undo)
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)))
-(vip-set-destructive-command (list 'vip-append val ?r nil nil nil))
-(if (not (eolp)) (forward-char))
-(if (equal com ?r)
-	(vip-loop val (vip-yank-last-insertion))
-(vip-change-state-to-insert))))
-(defun vip-Append (arg)
-"Append at end of line."
-(interactive "P")
-(vip-set-complex-command-for-undo)
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)))
-(vip-set-destructive-command (list 'vip-Append val ?r nil nil nil))
-(end-of-line)
-(if (equal com ?r)
-	(vip-loop val (vip-yank-last-insertion))
-(vip-change-state-to-insert))))
-(defun vip-Insert (arg)
-"Insert before first non-white."
-(interactive "P")
-(vip-set-complex-command-for-undo)
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)))
-(vip-set-destructive-command (list 'vip-Insert val ?r nil nil nil))
-(back-to-indentation)
-(if (equal com ?r)
-	(vip-loop val (vip-yank-last-insertion))
-(vip-change-state-to-insert))))
-(defun vip-open-line (arg)
-"Open line below."
-(interactive "P")
-(vip-set-complex-command-for-undo)
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)))
-(vip-set-destructive-command (list 'vip-open-line val ?r nil nil nil))
-(let ((col (current-indentation)))
-(if (equal com ?r)
-	  (vip-loop val
-		    (progn
-		      (end-of-line)
-		      (newline 1)
-		      (if vip-auto-indent
-			  (progn
-			    (setq vip-cted t)
-			    (if vip-electric-mode
-				(indent-according-to-mode)
-			      (indent-to col))
-			    ))
-		      (vip-yank-last-insertion)))
-	(end-of-line)
-	(newline 1)
-	(if vip-auto-indent
-	    (progn
-	      (setq vip-cted t)
-	      (if vip-electric-mode
-		  (indent-according-to-mode)
-		(indent-to col))))
-	(vip-change-state-to-insert)))))
-(defun vip-Open-line (arg)
-"Open line above."
-(interactive "P")
-(vip-set-complex-command-for-undo)
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)))
-(vip-set-destructive-command (list 'vip-Open-line val ?r nil nil nil))
-(let ((col (current-indentation)))
-(if (equal com ?r)
-	  (vip-loop val
-		    (progn
-		      (beginning-of-line)
-		      (open-line 1)
-		      (if vip-auto-indent
-			  (progn
-			    (setq vip-cted t)
-			    (if vip-electric-mode
-				(indent-according-to-mode)
-			      (indent-to col))
-			    ))
-		      (vip-yank-last-insertion)))
-	(beginning-of-line)
-	(open-line 1)
-	(if vip-auto-indent
-	    (progn
-	      (setq vip-cted t)
-	      (if vip-electric-mode
-		  (indent-according-to-mode)
-		(indent-to col))
-	      ))
-	(vip-change-state-to-insert)))))
-(defun vip-open-line-at-point (arg)
-"Open line at point."
-(interactive "P")
-(vip-set-complex-command-for-undo)
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)))
-(vip-set-destructive-command
-(list 'vip-open-line-at-point val ?r nil nil nil))
-(if (equal com ?r)
-	(vip-loop val
-		  (progn
-		    (open-line 1)
-		    (vip-yank-last-insertion)))
-(open-line 1)
-(vip-change-state-to-insert))))
-(defun vip-substitute (arg)
-"Substitute characters."
-(interactive "P")
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)))
-(push-mark nil t)
-(forward-char val)
-(if (equal com ?r)
-	(vip-change-subr (mark t) (point))
-(vip-change (mark t) (point)))
-(vip-set-destructive-command (list 'vip-substitute val ?r nil nil nil))
-))
-(defun vip-substitute-line (arg)
-"Substitute lines."
-(interactive "p")
-(vip-set-complex-command-for-undo)
-(vip-line (cons arg ?C)))
-;; Prepare for replace
-(defun vip-start-replace ()
-(setq vip-began-as-replace t
-	vip-sitting-in-replace t
-	vip-replace-chars-to-delete 0
-	vip-replace-chars-deleted 0)
-(vip-add-hook 'vip-after-change-functions 'vip-replace-mode-spy-after t)
-(vip-add-hook 'vip-before-change-functions 'vip-replace-mode-spy-before t)
-;; this will get added repeatedly, but no harm
-(add-hook 'after-change-functions 'vip-after-change-sentinel t)
-(add-hook 'before-change-functions 'vip-before-change-sentinel t)
-(vip-move-marker-locally 'vip-last-posn-in-replace-region
-			   (vip-replace-start))
-(vip-add-hook
-'vip-post-command-hooks 'vip-replace-state-post-command-sentinel t)
-(vip-add-hook
-'vip-pre-command-hooks 'vip-replace-state-pre-command-sentinel t)
-;; guard against a smartie who switched from R-replace to normal replace
-(vip-remove-hook
-'vip-post-command-hooks 'vip-R-state-post-command-sentinel)
-(if overwrite-mode (overwrite-mode nil))
-)
-;; checks how many chars were deleted by the last change
-(defun vip-replace-mode-spy-before (beg end)
-(setq vip-replace-chars-deleted
-	(- end beg
-	   (max 0 (- end (vip-replace-end)))
-	   (max 0 (- (vip-replace-start) beg))
-	   )))
-;; Invoked as an after-change-function to set up parameters of the last change
-(defun vip-replace-mode-spy-after (beg end length)
-(if (memq vip-intermediate-command '(repeating-insertion-from-ring))
-(progn
-	(setq vip-replace-chars-to-delete 0)
-	(vip-move-marker-locally
-	 'vip-last-posn-in-replace-region (point)))
-(let (beg-col end-col real-end chars-to-delete)
-(setq real-end (min end (vip-replace-end)))
-(save-excursion
-	(goto-char beg)
-	(setq beg-col (current-column))
-	(goto-char real-end)
-	(setq end-col (current-column)))
-;; If beg of change is outside the replacement region, then don't
-;; delete anything in the repl region (set chars-to-delete to 0).
-;;
-;; This works fine except that we have to take special care of
-;; dabbrev-expand.  The problem stems from new-dabbrev.el, which
-;; sometimes simply shifts the repl region rightwards, without
-;; deleting an equal amount of characters.
-;;
-;; The reason why new-dabbrev.el causes this are this:
-;; if one dinamically completes a partial word that starts before the
-;; replacement region (but ends inside) then new-dabbrev.el first
-;; moves cursor backwards, to the beginning of the word to be
-;; completed (say, pt A). Then it inserts the
-;; completed word and then deletes the old, incomplete part.
-;; Since the complete word is inserted at position before the repl
-;; region, the next If-statement would have set chars-to-delete to 0
-;; unless we check for the current command, which must be
-;; dabbrev-expand.
-;;
-;; In fact, it might be also useful to have overlays for insert
-;; regions as well, since this will let us capture the situation when
-;; dabbrev-expand goes back past the insertion point to find the
-;; beginning of the word to be expanded.
-(if (or (and (<= (vip-replace-start) beg)
-		   (<= beg (vip-replace-end)))
-	      (and (= length 0) (eq this-command 'dabbrev-expand)))
-	  (setq chars-to-delete
-		(max (- end-col beg-col) (- real-end beg) 0))
-	(setq chars-to-delete 0))
-;; if beg = last change position, it means that we are within the
-;; same command that does multiple changes. Moreover, it means
-;; that we have two subsequent changes (insert/delete) that
-;; complement each other.
-(if (= beg (marker-position vip-last-posn-in-replace-region))
-	  (setq vip-replace-chars-to-delete
-		(- (+ chars-to-delete vip-replace-chars-to-delete)
-		   vip-replace-chars-deleted))
-	(setq vip-replace-chars-to-delete chars-to-delete))
-(vip-move-marker-locally
-'vip-last-posn-in-replace-region
-(max (if (> end (vip-replace-end)) (vip-replace-start) end)
-	    (or (marker-position vip-last-posn-in-replace-region)
-		(vip-replace-start))
-	    ))
-(setq vip-replace-chars-to-delete
-	    (max 0
-		 (min vip-replace-chars-to-delete
-		      (- (vip-replace-end) vip-last-posn-in-replace-region)
-		      (- (vip-line-pos 'end) vip-last-posn-in-replace-region)
-		      )))
-)))
-;; Delete stuff between posn and the end of vip-replace-overlay-marker, if
-;; posn is within the overlay.
-(defun vip-finish-change (posn)
-(vip-remove-hook 'vip-after-change-functions 'vip-replace-mode-spy-after)
-(vip-remove-hook 'vip-before-change-functions 'vip-replace-mode-spy-before)
-(vip-remove-hook 'vip-post-command-hooks
-		   'vip-replace-state-post-command-sentinel)
-(vip-remove-hook
-'vip-pre-command-hooks 'vip-replace-state-pre-command-sentinel)
-(vip-restore-cursor-color-after-replace)
-(setq vip-sitting-in-replace nil) ; just in case we'll need to know it
-(save-excursion
-(if (and
-	 vip-replace-overlay
-	 (>= posn (vip-replace-start))
-	 (<  posn (vip-replace-end)))
-	   (delete-region posn (vip-replace-end)))
-)
-(if (eq vip-current-state 'replace-state)
-(vip-downgrade-to-insert))
-;; replace mode ended => nullify vip-last-posn-in-replace-region
-(vip-move-marker-locally 'vip-last-posn-in-replace-region nil)
-(vip-hide-replace-overlay)
-(vip-refresh-mode-line)
-(vip-put-string-on-kill-ring vip-last-replace-region)
-)
-;; Make STRING be the first element of the kill ring.
-(defun vip-put-string-on-kill-ring (string)
-(setq kill-ring (cons string kill-ring))
-(if (> (length kill-ring) kill-ring-max)
-(setcdr (nthcdr (1- kill-ring-max) kill-ring) nil))
-(setq kill-ring-yank-pointer kill-ring))
-(defun vip-finish-R-mode ()
-(vip-remove-hook 'vip-post-command-hooks 'vip-R-state-post-command-sentinel)
-(vip-remove-hook
-'vip-pre-command-hooks 'vip-replace-state-pre-command-sentinel)
-(vip-downgrade-to-insert))
-(defun vip-start-R-mode ()
-;; Leave arg as 1, not t: XEmacs insists that it must be a pos number
-(overwrite-mode 1)
-(vip-add-hook
-'vip-post-command-hooks 'vip-R-state-post-command-sentinel t)
-(vip-add-hook
-'vip-pre-command-hooks 'vip-replace-state-pre-command-sentinel t)
-;; guard against a smartie who switched from R-replace to normal replace
-(vip-remove-hook
-'vip-post-command-hooks 'vip-replace-state-post-command-sentinel)
-)
-(defun vip-replace-state-exit-cmd ()
-"Binding for keys that cause Replace state to switch to Vi or to Insert.
-These keys are ESC, RET, and LineFeed"
-(interactive)
-(if overwrite-mode  ;; If you are in replace mode invoked via 'R'
-(vip-finish-R-mode)
-(vip-finish-change vip-last-posn-in-replace-region))
-(let (com)
-(if (eq this-command 'vip-intercept-ESC-key)
-	(setq com 'vip-exit-insert-state)
-(vip-set-unread-command-events last-input-char)
-(setq com (key-binding (read-key-sequence nil))))
-(condition-case conds
-	(command-execute com)
-(error
-(vip-message-conditions conds)))
-)
-(vip-hide-replace-overlay))
-(defun vip-replace-state-carriage-return ()
-"Implements carriage return in Viper replace state."
-(interactive)
-;; If Emacs start supporting overlay maps, as it currently supports
-;; text-property maps, we could do away with vip-replace-minor-mode and
-;; just have keymap attached to replace overlay. Then the "if part" of this
-;; statement can be deleted.
-(if (or (< (point) (vip-replace-start))
-	  (> (point) (vip-replace-end)))
-(let (vip-replace-minor-mode com)
-	(vip-set-unread-command-events last-input-char)
-	(setq com (key-binding (read-key-sequence nil)))
-	(condition-case conds
-	    (command-execute com)
-	  (error
-	   (vip-message-conditions conds))))
-(if (not vip-allow-multiline-replace-regions)
-	(vip-replace-state-exit-cmd)
-(if (vip-same-line (point) (vip-replace-end))
-	  (vip-replace-state-exit-cmd)
-	(vip-kill-line nil)
-	(vip-next-line-at-bol nil)))))
-;; This is the function bound to 'R'---unlimited replace.
-;; Similar to Emacs's own overwrite-mode.
-(defun vip-overwrite (arg)
-"Begin overwrite mode."
-(interactive "P")
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)) (len))
-(vip-set-destructive-command (list 'vip-overwrite val ?r nil nil nil))
-(if com
-	(progn
-	  ;; Viper saves inserted text in vip-last-insertion
-	  (setq len (length vip-last-insertion))
-	  (delete-char len)
-	  (vip-loop val (vip-yank-last-insertion)))
-(setq last-command 'vip-overwrite)
-(vip-set-complex-command-for-undo)
-(vip-set-replace-overlay (point) (vip-line-pos 'end))
-(vip-change-state-to-replace)
-)))
-;; line commands
-(defun vip-line (arg)
-(let ((val (car arg))
-	(com (cdr arg)))
-(vip-move-marker-locally 'vip-com-point (point))
-(if (not (eobp))
-	(vip-next-line-carefully (1- val)))
-;; this ensures that dd, cc, D, yy will do the right thing on the last
-;; line of buffer when this line has no \n.
-(vip-add-newline-at-eob-if-necessary)
-(vip-execute-com 'vip-line val com))
-(if (and (eobp) (not (bobp))) (forward-line -1))
-)
-(defun vip-yank-line (arg)
-"Yank ARG lines (in Vi's sense)."
-(interactive "P")
-(let ((val (vip-p-val arg)))
-(vip-line (cons val ?Y))))
-;; region commands
-(defun vip-region (arg)
-"Execute command on a region."
-(interactive "P")
-(let ((val (vip-P-val arg))
-	(com (vip-getcom arg)))
-(vip-move-marker-locally 'vip-com-point (point))
-(exchange-point-and-mark)
-(vip-execute-com 'vip-region val com)))
-(defun vip-Region (arg)
-"Execute command on a Region."
-(interactive "P")
-(let ((val (vip-P-val arg))
-	(com (vip-getCom arg)))
-(vip-move-marker-locally 'vip-com-point (point))
-(exchange-point-and-mark)
-(vip-execute-com 'vip-Region val com)))
-(defun vip-replace-char (arg)
-"Replace the following ARG chars by the character read."
-(interactive "P")
-(if (and (eolp) (bolp)) (error "No character to replace here"))
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)))
-(vip-replace-char-subr com val)
-(if (and (eolp) (not (bolp))) (forward-char 1))
-(vip-set-destructive-command
-(list 'vip-replace-char val ?r nil vip-d-char nil))
-))
-(defun vip-replace-char-subr (com arg)
-(let ((take-care-of-iso-accents
-	 (and (boundp 'iso-accents-mode) vip-automatic-iso-accents))
-	char)
-(setq char (if (equal com ?r)
-		   vip-d-char
-		 (read-char)))
-(if (and  take-care-of-iso-accents (memq char '(?' ?\" ?^ ?~)))
-	;; get European characters
-	(progn
-	  (iso-accents-mode 1)
-	  (vip-set-unread-command-events char)
-	  (setq char (aref (read-key-sequence nil) 0))
-	  (iso-accents-mode -1)))
-(delete-char arg t)
-(setq vip-d-char char)
-(vip-loop (if (> arg 0) arg (- arg))
-	    (if (eq char ?\C-m) (insert "\n") (insert char)))
-(backward-char arg)))
-;; basic cursor movement.  j, k, l, h commands.
-(defun vip-forward-char (arg)
-"Move point right ARG characters (left if ARG negative).
-On reaching end of line, stop and signal error."
-(interactive "P")
-(vip-leave-region-active)
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(if vip-ex-style-motion
-	(progn
-	  ;; the boundary condition check gets weird here because
-	  ;; forward-char may be the parameter of a delete, and 'dl' works
-	  ;; just like 'x' for the last char on a line, so we have to allow
-	  ;; the forward motion before the 'vip-execute-com', but, of
-	  ;; course, 'dl' doesn't work on an empty line, so we have to
-	  ;; catch that condition before 'vip-execute-com'
-	  (if (and (eolp) (bolp)) (error "") (forward-char val))
-	  (if com (vip-execute-com 'vip-forward-char val com))
-	  (if (eolp) (progn (backward-char 1) (error ""))))
-(forward-char val)
-(if com (vip-execute-com 'vip-forward-char val com)))))
-(defun vip-backward-char (arg)
-"Move point left ARG characters (right if ARG negative).
-On reaching beginning of line, stop and signal error."
-(interactive "P")
-(vip-leave-region-active)
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(if vip-ex-style-motion
-	(progn
-	  (if (bolp) (error "") (backward-char val))
-	  (if com (vip-execute-com 'vip-backward-char val com)))
-(backward-char val)
-(if com (vip-execute-com 'vip-backward-char val com)))))
-;; Like forward-char, but doesn't move at end of buffer.
-(defun vip-forward-char-carefully (&optional arg)
-(setq arg (or arg 1))
-(if (>= (point-max) (+ (point) arg))
-(forward-char arg)
-(goto-char (point-max))))
-;; Like backward-char, but doesn't move at end of buffer.
-(defun vip-backward-char-carefully (&optional arg)
-(setq arg (or arg 1))
-(if (<= (point-min) (- (point) arg))
-(backward-char arg)
-(goto-char (point-min))))
-(defun vip-next-line-carefully (arg)
-(condition-case nil
-(next-line arg)
-(error nil)))
-;;; Word command
-;; Words are formed from alpha's and nonalphas - <sp>,\t\n are separators
-;; for word movement. When executed with a destructive command, \n is
-;; usually left untouched for the last word.
-;; Viper uses syntax table to determine what is a word and what is a
-;; separator. However, \n is always a separator. Also, if vip-syntax-preference
-;; is 'vi, then `_' is part of the word.
-;; skip only one \n
-(defun vip-skip-separators (forward)
-(if forward
-(progn
-	(vip-skip-all-separators-forward 'within-line)
-	(if (looking-at "\n")
-	    (progn
-	      (forward-char)
-	      (vip-skip-all-separators-forward  'within-line))))
-(vip-skip-all-separators-backward 'within-line)
-(backward-char)
-(if (looking-at "\n")
-	(vip-skip-all-separators-backward 'within-line)
-(forward-char))))
-(defun vip-forward-word-kernel (val)
-(while (> val 0)
-(cond ((vip-looking-at-alpha)
-	   (vip-skip-alpha-forward "_")
-	   (vip-skip-separators t))
-	  ((vip-looking-at-separator)
-	   (vip-skip-separators t))
-	  ((not (vip-looking-at-alphasep))
-	   (vip-skip-nonalphasep-forward)
-	   (vip-skip-separators t)))
-(setq val (1- val))))
-;; first search backward for pat. Then skip chars backwards using aux-pat
-(defun vip-fwd-skip (pat aux-pat lim)
-(if (and (save-excursion
-	     (re-search-backward pat lim t))
-	   (= (point) (match-end 0)))
-(goto-char (match-beginning 0)))
-(skip-chars-backward aux-pat lim)
-(if (= (point) lim)
-(vip-forward-char-carefully))
-)
-(defun vip-forward-word (arg)
-"Forward word."
-(interactive "P")
-(vip-leave-region-active)
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(vip-forward-word-kernel val)
-(if com (progn
-	      (cond ((memq com (list ?c (- ?c)))
-		     (vip-fwd-skip "\n[ \t]*" " \t" vip-com-point))
-		    ;; Yank words including the whitespace, but not newline
-		    ((memq com (list ?y (- ?y)))
-		     (vip-fwd-skip "\n[ \t]*" "" vip-com-point))
-		    ((vip-dotable-command-p com)
-		     (vip-fwd-skip "\n[ \t]*" "" vip-com-point)))
-	      (vip-execute-com 'vip-forward-word val com)))))
-(defun vip-forward-Word (arg)
-"Forward word delimited by white characters."
-(interactive "P")
-(vip-leave-region-active)
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(vip-loop val
-	      (progn
-		(vip-skip-nonseparators 'forward)
-		(vip-skip-separators t)))
-(if com (progn
-	      (cond ((memq com (list ?c (- ?c)))
-		     (vip-fwd-skip "\n[ \t]*" " \t" vip-com-point))
-		    ;; Yank words including the whitespace, but not newline
-		    ((memq com (list ?y (- ?y)))
-		     (vip-fwd-skip "\n[ \t]*" "" vip-com-point))
-		    ((vip-dotable-command-p com)
-		     (vip-fwd-skip "\n[ \t]*" "" vip-com-point)))
-	      (vip-execute-com 'vip-forward-Word val com)))))
-;; this is a bit different from Vi, but Vi's end of word
-;; makes no sense whatsoever
-(defun vip-end-of-word-kernel ()
-(if (vip-end-of-word-p) (forward-char))
-(if (vip-looking-at-separator)
-(vip-skip-all-separators-forward))
-(cond ((vip-looking-at-alpha) (vip-skip-alpha-forward "_"))
-	((not (vip-looking-at-alphasep)) (vip-skip-nonalphasep-forward)))
-(vip-backward-char-carefully))
-(defun vip-end-of-word-p ()
-(or (eobp)
-(save-excursion
-	(cond ((vip-looking-at-alpha)
-	       (forward-char)
-	       (not (vip-looking-at-alpha)))
-	      ((not (vip-looking-at-alphasep))
-	       (forward-char)
-	       (vip-looking-at-alphasep))))))
-(defun vip-end-of-word (arg &optional careful)
-"Move point to end of current word."
-(interactive "P")
-(vip-leave-region-active)
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(vip-loop val (vip-end-of-word-kernel))
-(if com
-	(progn
-	  (forward-char)
-	  (vip-execute-com 'vip-end-of-word val com)))))
-(defun vip-end-of-Word (arg)
-"Forward to end of word delimited by white character."
-(interactive "P")
-(vip-leave-region-active)
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(vip-loop val
-	      (progn
-		(vip-end-of-word-kernel)
-		(vip-skip-nonseparators 'forward)
-		(backward-char)))
-(if com
-	(progn
-	  (forward-char)
-	  (vip-execute-com 'vip-end-of-Word val com)))))
-(defun vip-backward-word-kernel (val)
-(while (> val 0)
-(backward-char)
-(cond ((vip-looking-at-alpha)
-	   (vip-skip-alpha-backward "_"))
-	  ((vip-looking-at-separator)
-	   (forward-char)
-	   (vip-skip-separators nil)
-	   (backward-char)
-	   (cond ((vip-looking-at-alpha)
-		  (vip-skip-alpha-backward "_"))
-		 ((not (vip-looking-at-alphasep))
-		  (vip-skip-nonalphasep-backward))
-		 (t (forward-char))))
-	  ((not (vip-looking-at-alphasep))
-	   (vip-skip-nonalphasep-backward)))
-(setq val (1- val))))
-(defun vip-backward-word (arg)
-"Backward word."
-(interactive "P")
-(vip-leave-region-active)
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)))
-(if com
-	(let (i)
-	  (if (setq i (save-excursion (backward-char) (looking-at "\n")))
-	      (backward-char))
-	  (vip-move-marker-locally 'vip-com-point (point))
-	  (if i (forward-char))))
-(vip-backward-word-kernel val)
-(if com (vip-execute-com 'vip-backward-word val com))))
-(defun vip-backward-Word (arg)
-"Backward word delimited by white character."
-(interactive "P")
-(vip-leave-region-active)
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)))
-(if com
-	(let (i)
-	  (if (setq i (save-excursion (backward-char) (looking-at "\n")))
-	      (backward-char))
-	  (vip-move-marker-locally 'vip-com-point (point))
-	  (if i (forward-char))))
-(vip-loop val
-	      (progn
-		(vip-skip-separators nil)
-		(vip-skip-nonseparators 'backward)))
-(if com (vip-execute-com 'vip-backward-Word val com))))
-;; line commands
-(defun vip-beginning-of-line (arg)
-"Go to beginning of line."
-(interactive "P")
-(vip-leave-region-active)
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(beginning-of-line val)
-(if com (vip-execute-com 'vip-beginning-of-line val com))))
-(defun vip-bol-and-skip-white (arg)
-"Beginning of line at first non-white character."
-(interactive "P")
-(vip-leave-region-active)
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(forward-to-indentation (1- val))
-(if com (vip-execute-com 'vip-bol-and-skip-white val com))))
-(defun vip-goto-eol (arg)
-"Go to end of line."
-(interactive "P")
-(vip-leave-region-active)
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(end-of-line val)
-(if com (vip-execute-com 'vip-goto-eol val com))
-(if vip-ex-style-motion
-	(if (and (eolp) (not (bolp))
-		 ;; a fix for vip-change-to-eol
-		 (not (equal vip-current-state 'insert-state)))
-	    (backward-char 1)
-))))
-(defun vip-goto-col (arg)
-"Go to ARG's column."
-(interactive "P")
-(vip-leave-region-active)
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg))
-	line-len)
-(setq line-len (- (vip-line-pos 'end) (vip-line-pos 'start)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(beginning-of-line)
-(forward-char (1- (min line-len val)))
-(while (> (current-column) (1- val))
-(backward-char 1))
-(if com (vip-execute-com 'vip-goto-col val com))
-(save-excursion
-(end-of-line)
-(if (> val (current-column)) (error "")))
-))
-(defun vip-next-line (arg)
-"Go to next line."
-(interactive "P")
-(vip-leave-region-active)
-(let ((val (vip-p-val arg))
-	(com (vip-getCom arg)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(next-line val)
-(if vip-ex-style-motion
-	(if (and (eolp) (not (bolp))) (backward-char 1)))
-(setq this-command 'next-line)
-(if com (vip-execute-com 'vip-next-line val com))))
-(defun vip-next-line-at-bol (arg)
-"Next line at beginning of line."
-(interactive "P")
-(vip-leave-region-active)
-(save-excursion
-(end-of-line)
-(if (eobp) (error "Last line in buffer")))
-(let ((val (vip-p-val arg))
-	(com (vip-getCom arg)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(forward-line val)
-(back-to-indentation)
-(if com (vip-execute-com 'vip-next-line-at-bol val com))))
-(defun vip-previous-line (arg)
-"Go to previous line."
-(interactive "P")
-(vip-leave-region-active)
-(let ((val (vip-p-val arg))
-	(com (vip-getCom arg)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(previous-line val)
-(if vip-ex-style-motion
-	(if (and (eolp) (not (bolp))) (backward-char 1)))
-(setq this-command 'previous-line)
-(if com (vip-execute-com 'vip-previous-line val com))))
-(defun vip-previous-line-at-bol (arg)
-"Previous line at beginning of line."
-(interactive "P")
-(vip-leave-region-active)
-(save-excursion
-(beginning-of-line)
-(if (bobp) (error "First line in buffer")))
-(let ((val (vip-p-val arg))
-	(com (vip-getCom arg)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(forward-line (- val))
-(back-to-indentation)
-(if com (vip-execute-com 'vip-previous-line val com))))
-(defun vip-change-to-eol (arg)
-"Change to end of line."
-(interactive "P")
-(vip-goto-eol (cons arg ?c)))
-(defun vip-kill-line (arg)
-"Delete line."
-(interactive "P")
-(vip-goto-eol (cons arg ?d)))
-(defun vip-erase-line (arg)
-"Erase line."
-(interactive "P")
-(vip-beginning-of-line (cons arg ?d)))
-;;; Moving around
-(defun vip-goto-line (arg)
-"Go to ARG's line.  Without ARG go to end of buffer."
-(interactive "P")
-(let ((val (vip-P-val arg))
-	(com (vip-getCom arg)))
-(vip-move-marker-locally 'vip-com-point (point))
-(vip-deactivate-mark)
-(push-mark nil t)
-(if (null val)
-	(goto-char (point-max))
-(goto-char (point-min))
-(forward-line (1- val)))
-;; positioning is done twice: before and after command execution
-(if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
-(back-to-indentation)
-(if com (vip-execute-com 'vip-goto-line val com))
-(if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
-(back-to-indentation)
-))
-;; Find ARG's occurrence of CHAR on the current line.
-;; If FORWARD then search is forward, otherwise backward.  OFFSET is used to
-;; adjust point after search.
-(defun vip-find-char (arg char forward offset)
-(or (char-or-string-p char) (error ""))
-(let ((arg (if forward arg (- arg)))
-	(cmd (if (eq vip-intermediate-command 'vip-repeat)
-		 (nth 5 vip-d-com)
-	       (vip-array-to-string (this-command-keys))))
-	point)
-(save-excursion
-(save-restriction
-	(if (> arg 0)
-	    (narrow-to-region
-	     ;; forward search begins here
-	     (if (eolp) (error "Command `%s':  At end of line" cmd) (point))
-	     ;; forward search ends here
-	     (progn (end-of-line) (point)))
-	  (narrow-to-region
-	   ;; backward search begins from here
-	   (if (bolp)
-	       (error "Command `%s':  At beginning of line" cmd) (point))
-	   ;; backward search ends here
-	   (progn (beginning-of-line) (point))))
-	;; if arg > 0, point is forwarded before search.
-	(if (> arg 0) (goto-char (1+ (point-min)))
-	  (goto-char (point-max)))
-	(if (let ((case-fold-search nil))
-	      (search-forward (char-to-string char) nil 0 arg))
-	    (setq point (point))
-	  (error "Command `%s':  `%c' not found" cmd char))))
-(goto-char (+ point (if (> arg 0) (if offset -2 -1) (if offset 1 0))))))
-(defun vip-find-char-forward (arg)
-"Find char on the line.
-If called interactively read the char to find from the terminal, and if
-called from vip-repeat, the char last used is used.  This behaviour is
-controlled by the sign of prefix numeric value."
-(interactive "P")
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg))
-	(cmd-representation (nth 5 vip-d-com)))
-(if (> val 0)
-	;; this means that the function was called interactively
-	(setq vip-f-char (read-char)
-	      vip-f-forward t
-	      vip-f-offset nil)
-;; vip-repeat --- set vip-F-char from command-keys
-(setq vip-F-char (if (stringp cmd-representation)
-			   (vip-seq-last-elt cmd-representation)
-			 vip-F-char)
-	    vip-f-char vip-F-char)
-(setq val (- val)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(vip-find-char val (if (> (vip-p-val arg) 0) vip-f-char vip-F-char) t nil)
-(setq val (- val))
-(if com
-	(progn
-	  (setq vip-F-char vip-f-char) ; set new vip-F-char
-	  (forward-char)
-	  (vip-execute-com 'vip-find-char-forward val com)))))
-(defun vip-goto-char-forward (arg)
-"Go up to char ARG forward on line."
-(interactive "P")
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg))
-	(cmd-representation (nth 5 vip-d-com)))
-(if (> val 0)
-	;; this means that the function was called interactively
-	(setq vip-f-char (read-char)
-	      vip-f-forward t
-	      vip-f-offset t)
-;; vip-repeat --- set vip-F-char from command-keys
-(setq vip-F-char (if (stringp cmd-representation)
-			   (vip-seq-last-elt cmd-representation)
-			 vip-F-char)
-	    vip-f-char vip-F-char)
-(setq val (- val)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(vip-find-char val (if (> (vip-p-val arg) 0) vip-f-char vip-F-char) t t)
-(setq val (- val))
-(if com
-	(progn
-	  (setq vip-F-char vip-f-char) ; set new vip-F-char
-	  (forward-char)
-	  (vip-execute-com 'vip-goto-char-forward val com)))))
-(defun vip-find-char-backward (arg)
-"Find char ARG on line backward."
-(interactive "P")
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg))
-	(cmd-representation (nth 5 vip-d-com)))
-(if (> val 0)
-	;; this means that the function was called interactively
-	(setq vip-f-char (read-char)
-	      vip-f-forward nil
-	      vip-f-offset nil)
-;; vip-repeat --- set vip-F-char from command-keys
-(setq vip-F-char (if (stringp cmd-representation)
-			   (vip-seq-last-elt cmd-representation)
-			 vip-F-char)
-	    vip-f-char vip-F-char)
-(setq val (- val)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(vip-find-char
-val (if (> (vip-p-val arg) 0) vip-f-char vip-F-char) nil nil)
-(setq val (- val))
-(if com
-	(progn
-	  (setq vip-F-char vip-f-char) ; set new vip-F-char
-	  (vip-execute-com 'vip-find-char-backward val com)))))
-(defun vip-goto-char-backward (arg)
-"Go up to char ARG backward on line."
-(interactive "P")
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg))
-	(cmd-representation (nth 5 vip-d-com)))
-(if (> val 0)
-	;; this means that the function was called interactively
-	(setq vip-f-char (read-char)
-	      vip-f-forward nil
-	      vip-f-offset t)
-;; vip-repeat --- set vip-F-char from command-keys
-(setq vip-F-char (if (stringp cmd-representation)
-			   (vip-seq-last-elt cmd-representation)
-			 vip-F-char)
-	    vip-f-char vip-F-char)
-(setq val (- val)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(vip-find-char val (if (> (vip-p-val arg) 0) vip-f-char vip-F-char) nil t)
-(setq val (- val))
-(if com
-	(progn
-	  (setq vip-F-char vip-f-char) ; set new vip-F-char
-	  (vip-execute-com 'vip-goto-char-backward val com)))))
-(defun vip-repeat-find (arg)
-"Repeat previous find command."
-(interactive "P")
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)))
-(vip-deactivate-mark)
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(vip-find-char val vip-f-char vip-f-forward vip-f-offset)
-(if com
-	(progn
-	  (if vip-f-forward (forward-char))
-	  (vip-execute-com 'vip-repeat-find val com)))))
-(defun vip-repeat-find-opposite (arg)
-"Repeat previous find command in the opposite direction."
-(interactive "P")
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)))
-(vip-deactivate-mark)
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(vip-find-char val vip-f-char (not vip-f-forward) vip-f-offset)
-(if com
-	(progn
-	  (if vip-f-forward (forward-char))
-	  (vip-execute-com 'vip-repeat-find-opposite val com)))))
-;; window scrolling etc.
-(defun vip-other-window (arg)
-"Switch to other window."
-(interactive "p")
-(other-window arg)
-(or (not (eq vip-current-state 'emacs-state))
-(string= (buffer-name (current-buffer)) " *Minibuf-1*")
-(vip-change-state-to-vi)))
-(defun vip-window-top (arg)
-"Go to home window line."
-(interactive "P")
-(let ((val (vip-p-val arg))
-	(com (vip-getCom arg)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(push-mark nil t)
-(move-to-window-line (1- val))
-;; positioning is done twice: before and after command execution
-(if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
-(back-to-indentation)
-(if com (vip-execute-com 'vip-window-top val com))
-(if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
-(back-to-indentation)
-))
-(defun vip-window-middle (arg)
-"Go to middle window line."
-(interactive "P")
-(let ((val (vip-p-val arg))
-	(com (vip-getCom arg))
-	lines)
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(push-mark nil t)
-(if (not (pos-visible-in-window-p (point-max)))
-	(move-to-window-line (+ (/ (1- (window-height)) 2) (1- val)))
-(setq lines (count-lines (window-start) (point-max)))
-(move-to-window-line (+ (/ lines 2) (1- val))))
-;; positioning is done twice: before and after command execution
-(if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
-(back-to-indentation)
-(if com (vip-execute-com 'vip-window-middle val com))
-(if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
-(back-to-indentation)
-))
-(defun vip-window-bottom (arg)
-"Go to last window line."
-(interactive "P")
-(let ((val (vip-p-val arg))
-	(com (vip-getCom arg)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(push-mark nil t)
-(move-to-window-line (- val))
-;; positioning is done twice: before and after command execution
-(if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
-(back-to-indentation)
-(if com (vip-execute-com 'vip-window-bottom val com))
-(if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
-(back-to-indentation)
-))
-(defun vip-line-to-top (arg)
-"Put current line on the home line."
-(interactive "p")
-(recenter (1- arg)))
-(defun vip-line-to-middle (arg)
-"Put current line on the middle line."
-(interactive "p")
-(recenter (+ (1- arg) (/ (1- (window-height)) 2))))
-(defun vip-line-to-bottom (arg)
-"Put current line on the last line."
-(interactive "p")
-(recenter (- (window-height) (1+ arg))))
-;; If point is within vip-search-scroll-threshold of window top or bottom,
-;; scroll up or down 1/7 of window height, depending on whether we are at the
-;; bottom or at the top of the  window. This function is called by vip-search
-;; (which is called from vip-search-forward/backward/next). If the value of
-;; vip-search-scroll-threshold is negative - don't scroll.
-(defun vip-adjust-window ()
-(let ((win-height (if vip-emacs-p
-			(1- (window-height)) ; adjust for modeline
-		      (window-displayed-height)))
-	(pt (point))
-	at-top-p at-bottom-p
-	min-scroll direction)
-(save-excursion
-(move-to-window-line 0) ; top
-(setq at-top-p
-	    (<= (count-lines pt (point))
-		vip-search-scroll-threshold))
-(move-to-window-line -1) ; bottom
-(setq at-bottom-p
-	    (<= (count-lines pt (point)) vip-search-scroll-threshold))
-)
-(cond (at-top-p (setq min-scroll (1- vip-search-scroll-threshold)
-			  direction  1))
-	  (at-bottom-p (setq min-scroll (1+ vip-search-scroll-threshold)
-			     direction -1)))
-(if min-scroll
-	(recenter
-	 (* (max min-scroll (/ win-height 7)) direction)))
-))
-;; paren match
-;; must correct this to only match ( to ) etc. On the other hand
-;; it is good that paren match gets confused, because that way you
-;; catch _all_ imbalances.
-(defun vip-paren-match (arg)
-"Go to the matching parenthesis."
-(interactive "P")
-(vip-leave-region-active)
-(let ((com (vip-getcom arg))
-	(parse-sexp-ignore-comments vip-parse-sexp-ignore-comments)
-	anchor-point)
-(if (integerp arg)
-	(if (or (> arg 99) (< arg 1))
-	    (error "Prefix must be between 1 and 99")
-	  (goto-char
-	   (if (> (point-max) 80000)
-	       (* (/ (point-max) 100) arg)
-	     (/ (* (point-max) arg) 100)))
-	  (back-to-indentation))
-(let (beg-lim end-lim)
-	(if (and (eolp) (not (bolp))) (forward-char -1))
-	(if (not (looking-at "[][(){}]"))
-	    (setq anchor-point (point)))
-	(save-excursion
-	  (beginning-of-line)
-	  (setq beg-lim (point))
-	  (end-of-line)
-	  (setq end-lim (point)))
-	(cond ((re-search-forward "[][(){}]" end-lim t)
-	       (backward-char) )
-	      ((re-search-backward "[][(){}]" beg-lim t))
-	      (t
-	       (error "No matching character on line"))))
-(cond ((looking-at "[\(\[{]")
-	     (if com (vip-move-marker-locally 'vip-com-point (point)))
-	     (forward-sexp 1)
-	     (if com
-		 (vip-execute-com 'vip-paren-match nil com)
-	       (backward-char)))
-	    (anchor-point
-	     (if com
-		 (progn
-		   (vip-move-marker-locally 'vip-com-point anchor-point)
-		   (forward-char 1)
-		   (vip-execute-com 'vip-paren-match nil com)
-		   )))
-	    ((looking-at "[])}]")
-	     (forward-char)
-	     (if com (vip-move-marker-locally 'vip-com-point (point)))
-	     (backward-sexp 1)
-	     (if com (vip-execute-com 'vip-paren-match nil com)))
-	    (t (error ""))))))
-(defun vip-toggle-parse-sexp-ignore-comments ()
-(interactive)
-(setq vip-parse-sexp-ignore-comments (not vip-parse-sexp-ignore-comments))
-(prin1 (format "`%%' will %signore parentheses inside the comments"
-	   (if vip-parse-sexp-ignore-comments "" "NOT ")))
-)
-;; sentence ,paragraph and heading
-(defun vip-forward-sentence (arg)
-"Forward sentence."
-(interactive "P")
-(push-mark nil t)
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(forward-sentence val)
-(if com (vip-execute-com 'vip-forward-sentence nil com))))
-(defun vip-backward-sentence (arg)
-"Backward sentence."
-(interactive "P")
-(push-mark nil t)
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(backward-sentence val)
-(if com (vip-execute-com 'vip-backward-sentence nil com))))
-(defun vip-forward-paragraph (arg)
-"Forward paragraph."
-(interactive "P")
-(push-mark nil t)
-(let ((val (vip-p-val arg))
-	(com (vip-getCom arg)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(forward-paragraph val)
-(if com
-	(progn
-	  (backward-char 1)
-	  (vip-execute-com 'vip-forward-paragraph nil com)))))
-(defun vip-backward-paragraph (arg)
-"Backward paragraph."
-(interactive "P")
-(push-mark nil t)
-(let ((val (vip-p-val arg))
-	(com (vip-getCom arg)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(backward-paragraph val)
-(if com
-	(progn
-	  (forward-char 1)
-	  (vip-execute-com 'vip-backward-paragraph nil com)
-	  (backward-char 1)))))
-;; should be mode-specific etc.
-(defun vip-prev-heading (arg)
-(interactive "P")
-(let ((val (vip-p-val arg))
-	(com (vip-getCom arg)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(re-search-backward vip-heading-start nil t val)
-(goto-char (match-beginning 0))
-(if com (vip-execute-com 'vip-prev-heading nil com))))
-(defun vip-heading-end (arg)
-(interactive "P")
-(let ((val (vip-p-val arg))
-	(com (vip-getCom arg)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(re-search-forward vip-heading-end nil t val)
-(goto-char (match-beginning 0))
-(if com (vip-execute-com 'vip-heading-end nil com))))
-(defun vip-next-heading (arg)
-(interactive "P")
-(let ((val (vip-p-val arg))
-	(com (vip-getCom arg)))
-(if com (vip-move-marker-locally 'vip-com-point (point)))
-(end-of-line)
-(re-search-forward vip-heading-start nil t val)
-(goto-char (match-beginning 0))
-(if com (vip-execute-com 'vip-next-heading nil com))))
-;; scrolling
-(setq scroll-step 1)
-(defun vip-scroll-screen (arg)
-"Scroll to next screen."
-(interactive "p")
-(condition-case nil
-(if (> arg 0)
-	  (while (> arg 0)
-	    (scroll-up)
-	    (setq arg (1- arg)))
-	(while (> 0 arg)
-	  (scroll-down)
-	  (setq arg (1+ arg))))
-(error (beep 1)
-	   (if (> arg 0)
-	       (progn
-		 (message "End of buffer")
-		 (goto-char (point-max)))
-	     (message "Beginning of buffer")
-	     (goto-char (point-min))))
-))
-(defun vip-scroll-screen-back (arg)
-"Scroll to previous screen."
-(interactive "p")
-(vip-scroll-screen (- arg)))
-(defun vip-scroll-down (arg)
-"Pull down half screen."
-(interactive "P")
-(condition-case nil
-(if (null arg)
-	  (scroll-down (/ (window-height) 2))
-	(scroll-down arg))
-(error (beep 1)
-	   (message "Beginning of buffer")
-	   (goto-char (point-min)))))
-(defun vip-scroll-down-one (arg)
-"Scroll up one line."
-(interactive "p")
-(scroll-down arg))
-(defun vip-scroll-up (arg)
-"Pull up half screen."
-(interactive "P")
-(condition-case nil
-(if (null arg)
-	  (scroll-up (/ (window-height) 2))
-	(scroll-up arg))
-(error (beep 1)
-	   (message "End of buffer")
-	   (goto-char (point-max)))))
-(defun vip-scroll-up-one (arg)
-"Scroll down one line."
-(interactive "p")
-(scroll-up arg))
-;; searching
-(defun vip-if-string (prompt)
-(let ((s (vip-read-string-with-history
-	    prompt
-	    nil ; no initial
-	    'vip-search-history
-	    (car vip-search-history))))
-(if (not (string= s ""))
-	(setq vip-s-string s))))
-(defun vip-toggle-search-style (arg)
-"Toggle the value of vip-case-fold-search/vip-re-search.
-Without prefix argument, will ask which search style to toggle. With prefix
-arg 1,toggles vip-case-fold-search; with arg 2 toggles vip-re-search.
-Although this function is bound to \\[vip-toggle-search-style], the most
-convenient way to use it is to bind `//' to the macro
-`1 M-x vip-toggle-search-style' and `///' to
-`2 M-x vip-toggle-search-style'. In this way, hitting `//' quickly will
-toggle case-fold-search and hitting `/' three times witth toggle regexp
-search. Macros are more convenient in this case because they don't affect
-the Emacs binding of `/'."
-(interactive "P")
-(let (msg)
-(cond ((or (eq arg 1)
-	       (and (null arg)
-		    (y-or-n-p (format "Search style: '%s'. Want '%s'? "
-				      (if vip-case-fold-search
-					  "case-insensitive" "case-sensitive")
-				      (if vip-case-fold-search
-					  "case-sensitive"
-					"case-insensitive")))))
-	   (setq vip-case-fold-search (null vip-case-fold-search))
-	   (if vip-case-fold-search
-	       (setq msg "Search becomes case-insensitive")
-	     (setq msg "Search becomes case-sensitive")))
-	  ((or (eq arg 2)
-	       (and (null arg)
-		    (y-or-n-p (format "Search style: '%s'. Want '%s'? "
-				      (if vip-re-search
-					  "regexp-search" "vanilla-search")
-				      (if vip-re-search
-					  "vanilla-search"
-					"regexp-search")))))
-	   (setq vip-re-search (null vip-re-search))
-	   (if vip-re-search
-	       (setq msg "Search becomes regexp-style")
-	     (setq msg "Search becomes vanilla-style")))
-	  (t
-	   (setq msg "Search style remains unchanged")))
-(prin1 msg t)))
-(defun vip-set-vi-search-style-macros (unset)
-"Set the macros for toggling the search style in Viper's vi-state.
-The macro that toggles case sensitivity is bound to `//', and the one that
-toggles regexp search is bound to `///'.
-With a prefix argument, this function unsets the macros. "
-(interactive "P")
-(or noninteractive
-(if (not unset)
-	  (progn
-	    ;; toggle case sensitivity in search
-	    (vip-record-kbd-macro
-	     "//" 'vi-state
-	     [1 (meta x) v i p - t o g g l e - s e a r c h - s t y l e return]
-	     't)
-	    ;; toggle regexp/vanila search
-	    (vip-record-kbd-macro
-	     "///" 'vi-state
-	     [2 (meta x) v i p - t o g g l e - s e a r c h - s t y l e return]
-	     't)
-	    (if (interactive-p)
-		(message
-		 "// and /// now toggle case-sensitivity and regexp search.")))
-	(vip-unrecord-kbd-macro "//" 'vi-state)
-	(sit-for 2)
-	(vip-unrecord-kbd-macro "///" 'vi-state))))
-(defun vip-set-emacs-search-style-macros (unset &optional arg-majormode)
-"Set the macros for toggling the search style in Viper's emacs-state.
-The macro that toggles case sensitivity is bound to `//', and the one that
-toggles regexp search is bound to `///'.
-With a prefix argument, this function unsets the macros.
-If the optional prefix argument is non-nil and specifies a valid major mode,
-this sets the macros only in the macros in that major mode. Otherwise,
-the macros are set in the current major mode.
-\(When unsetting the macros, the second argument has no effect.\)"
-(interactive "P")
-(or noninteractive
-(if (not unset)
-	  (progn
-	    ;; toggle case sensitivity in search
-	    (vip-record-kbd-macro
-	     "//" 'emacs-state
-	     [1 (meta x) v i p - t o g g l e - s e a r c h - s t y l e return]
-	     (or arg-majormode major-mode))
-	    ;; toggle regexp/vanila search
-	    (vip-record-kbd-macro
-	     "///" 'emacs-state
-	     [2 (meta x) v i p - t o g g l e - s e a r c h - s t y l e return]
-	     (or arg-majormode major-mode))
-	    (if (interactive-p)
-		(message
-		 "// and /// now toggle case-sensitivity and regexp search.")))
-	(vip-unrecord-kbd-macro "//" 'emacs-state)
-	(sit-for 2)
-	(vip-unrecord-kbd-macro "///" 'emacs-state))))
-(defun vip-search-forward (arg)
-"Search a string forward.
-ARG is used to find the ARG's occurrence of the string.
-Null string will repeat previous search."
-(interactive "P")
-(let ((val (vip-P-val arg))
-	(com (vip-getcom arg))
-	(old-str vip-s-string))
-(setq vip-s-forward t)
-(vip-if-string "/")
-;; this is not used at present, but may be used later
-(if (or (not (equal old-str vip-s-string))
-	    (not (markerp vip-local-search-start-marker))
-	    (not (marker-buffer vip-local-search-start-marker)))
-	(setq vip-local-search-start-marker (point-marker)))
-(vip-search vip-s-string t val)
-(if com
-	(progn
-	  (vip-move-marker-locally 'vip-com-point (mark t))
-	  (vip-execute-com 'vip-search-next val com)))))
-(defun vip-search-backward (arg)
-"Search a string backward.
-ARG is used to find the ARG's occurrence of the string.
-Null string will repeat previous search."
-(interactive "P")
-(let ((val (vip-P-val arg))
-	(com (vip-getcom arg))
-	(old-str vip-s-string))
-(setq vip-s-forward nil)
-(vip-if-string "?")
-;; this is not used at present, but may be used later
-(if (or (not (equal old-str vip-s-string))
-	    (not (markerp vip-local-search-start-marker))
-	    (not (marker-buffer vip-local-search-start-marker)))
-	(setq vip-local-search-start-marker (point-marker)))
-(vip-search vip-s-string nil val)
-(if com
-	(progn
-	  (vip-move-marker-locally 'vip-com-point (mark t))
-	  (vip-execute-com 'vip-search-next val com)))))
-;; Search for COUNT's occurrence of STRING.
-;; Search is forward if FORWARD is non-nil, otherwise backward.
-;; INIT-POINT is the position where search is to start.
-;; Arguments:
-;;   (STRING FORW COUNT &optional NO-OFFSET INIT-POINT LIMIT FAIL-IF-NOT-FOUND)
-(defun vip-search (string forward arg
-			  &optional no-offset init-point fail-if-not-found)
-(if (not (equal string ""))
-(let ((val (vip-p-val arg))
-	  (com (vip-getcom arg))
-	  (offset (not no-offset))
-	  (case-fold-search vip-case-fold-search)
-	  (start-point (or init-point (point))))
-(vip-deactivate-mark)
-(if forward
-	  (condition-case nil
-	      (progn
-	        (if offset (vip-forward-char-carefully))
-	        (if vip-re-search
-		    (progn
-		      (re-search-forward string nil nil val)
-		      (re-search-backward string))
-		  (search-forward string nil nil val)
-		  (search-backward string))
-		(if (not (equal start-point (point)))
-		    (push-mark start-point t)))
-	    (search-failed
-	     (if (and (not fail-if-not-found) vip-search-wrap-around-t)
-	         (progn
-		   (message "Search wrapped around BOTTOM of buffer")
-		   (goto-char (point-min))
-		   (vip-search string forward (cons 1 com) t start-point 'fail)
-		   ;; don't wait in macros
-		   (or executing-kbd-macro (sit-for 2))
-		   ;; delete the wrap-around message
-		   (message "")
-		   )
-	       (goto-char start-point)
-	       (error "`%s': %s not found"
-		      string
-		      (if vip-re-search "Pattern" "String"))
-	       )))
-	;; backward
-(condition-case nil
-	    (progn
-	      (if vip-re-search
-		  (re-search-backward string nil nil val)
-	        (search-backward string nil nil val))
-	      (if (not (equal start-point (point)))
-		  (push-mark start-point t)))
-	  (search-failed
-	   (if (and (not fail-if-not-found) vip-search-wrap-around-t)
-	       (progn
-		 (message "Search wrapped around TOP of buffer")
-	         (goto-char (point-max))
-	         (vip-search string forward (cons 1 com) t start-point 'fail)
-		 ;; don't wait in macros
-		 (or executing-kbd-macro (sit-for 2))
-		 ;; delete the wrap-around message
-		 (message "")
-		 )
-	     (goto-char start-point)
-	     (error "`%s': %s not found"
-		    string
-		    (if vip-re-search "Pattern" "String"))
-	     ))))
-;; pull up or down if at top/bottom of window
-(vip-adjust-window)
-;; highlight the result of search
-;; don't wait and don't highlight in macros
-(or executing-kbd-macro
-	  vip-inside-command-argument-action
-	  (vip-flash-search-pattern))
-)))
-(defun vip-search-next (arg)
-"Repeat previous search."
-(interactive "P")
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)))
-(if (null vip-s-string) (error vip-NoPrevSearch))
-(vip-search vip-s-string vip-s-forward arg)
-(if com
-	(progn
-	  (vip-move-marker-locally 'vip-com-point (mark t))
-	  (vip-execute-com 'vip-search-next val com)))))
-(defun vip-search-Next (arg)
-"Repeat previous search in the reverse direction."
-(interactive "P")
-(let ((val (vip-p-val arg))
-	(com (vip-getcom arg)))
-(if (null vip-s-string) (error vip-NoPrevSearch))
-(vip-search vip-s-string (not vip-s-forward) arg)
-(if com
-	(progn
-	  (vip-move-marker-locally 'vip-com-point (mark t))
-	  (vip-execute-com 'vip-search-Next val com)))))
-;; Search contents of buffer defined by one of Viper's motion commands.
-;; Repeatable via `n' and `N'.
-(defun vip-buffer-search-enable (&optional c)
-(cond (c (setq vip-buffer-search-char c))
-	((null vip-buffer-search-char)
-	 (setq vip-buffer-search-char ?g)))
-(define-key vip-vi-basic-map
-(char-to-string vip-buffer-search-char) 'vip-command-argument)
-(aset vip-exec-array vip-buffer-search-char 'vip-exec-buffer-search)
-(setq vip-prefix-commands (cons vip-buffer-search-char vip-prefix-commands)))
-;; This is a Viper wraper for isearch-forward.
-(defun vip-isearch-forward (arg)
-"Do incremental search forward."
-(interactive "P")
-;; emacs bug workaround
-(if (listp arg) (setq arg (car arg)))
-(vip-exec-form-in-emacs (list 'isearch-forward arg)))
-;; This is a Viper wraper for isearch-backward."
-(defun vip-isearch-backward (arg)
-"Do incremental search backward."
-(interactive "P")
-;; emacs bug workaround
-(if (listp arg) (setq arg (car arg)))
-(vip-exec-form-in-emacs (list 'isearch-backward arg)))
-;; visiting and killing files, buffers
-(defun vip-switch-to-buffer ()
-"Switch to buffer in the current window."
-(interactive)
-(let (buffer)
-(setq buffer
-	  (read-buffer
-	   (format "Switch to buffer in this window \(%s\): "
-		   (buffer-name (other-buffer (current-buffer))))))
-(switch-to-buffer buffer)
-))
-(defun vip-switch-to-buffer-other-window ()
-"Switch to buffer in another window."
-(interactive)
-(let (buffer)
-(setq buffer
-	  (read-buffer
-	   (format "Switch to buffer in another window \(%s\): "
-		   (buffer-name (other-buffer (current-buffer))))))
-(switch-to-buffer-other-window buffer)
-))
-(defun vip-kill-buffer ()
-"Kill a buffer."
-(interactive)
-(let (buffer buffer-name)
-(setq buffer-name
-	  (read-buffer
-	   (format "Kill buffer \(%s\): "
-		   (buffer-name (current-buffer)))))
-(setq buffer
-	  (if (null buffer-name)
-	      (current-buffer)
-	    (get-buffer buffer-name)))
-(if (null buffer) (error "`%s': No such buffer" buffer-name))
-(if (or (not (buffer-modified-p buffer))
-	    (y-or-n-p
-	     (format
-	      "Buffer `%s' is modified, are you sure you want to kill it? "
-	      buffer-name)))
-	(kill-buffer buffer)
-(error "Buffer not killed"))))
-(defvar vip-smart-suffix-list
-'("" "tex" "c" "cc" "C" "el" "java" "html" "htm" "pl" "P" "p")
-"*List of suffixes that Viper automatically tries to append to filenames ending with a `.'.
-This is useful when you the current directory contains files with the same
-prefix and many different suffixes. Usually, only one of the suffixes
-represents an editable file. However, file completion will stop at the `.'
-The smart suffix feature lets you hit RET in such a case, and Viper will
-select the appropriate suffix.
-Suffixes are tried in the order given and the first suffix for which a
-corresponding file exists is selected. If no file exists for any of the
-suffixes, the user is asked to confirm.
-To turn this feature off, set this variable to nil.")
-;; Try to add suffix to files ending with a `.'
-;; Useful when the user hits RET on a non-completed file name.
-(defun vip-file-add-suffix ()
-(let ((count 0)
-	(len (length vip-smart-suffix-list))
-	(file (buffer-string))
-	found key cmd suff)
-(goto-char (point-max))
-(if (and vip-smart-suffix-list (string-match "\\.$" file))
-	(progn
-	  (while (and (not found) (< count len))
-	    (setq suff (nth count vip-smart-suffix-list)
-		  count (1+ count))
-	    (if (file-exists-p (format "%s%s" file suff))
-		(progn
-		  (setq found t)
-		  (insert suff))))
-	  (if found
-	      ()
-	    (vip-tmp-insert-at-eob " [Please complete file name]")
-	    (unwind-protect
-		(while (not (memq cmd '(exit-minibuffer vip-exit-minibuffer)))
-		  (setq cmd
-			(key-binding (setq key (read-key-sequence nil))))
-		  (cond ((eq cmd 'self-insert-command)
-			 (if vip-xemacs-p
-			     (insert (events-to-keys key))
-			   (insert key)))
-			((memq cmd '(exit-minibuffer vip-exit-minibuffer))
-			 nil)
-			(t (command-execute cmd)))
-		  )))
-	      ))
-))
-;; Advice for use in find-file and read-file-name commands.
-(defadvice exit-minibuffer (before vip-exit-minibuffer-advice activate)
-"Run `vip-minibuffer-exit-hook' just before exiting the minibuffer."
-(run-hooks 'vip-minibuffer-exit-hook))
-(defadvice find-file (before vip-add-suffix-advice activate)
-"Use `read-file-name' for reading arguments."
-(interactive (cons (read-file-name "Find file: " nil default-directory)
-		     ;; if Mule and prefix argument, ask for coding system
-		     (if (or (boundp 'MULE)    ; mule integrated Emacs 19
-			     (featurep 'mule)) ; mule integrated XEmacs 20
-			 (list
-			  (and current-prefix-arg
-			       (read-coding-system "Coding-system: "))))
-		     )))
-(defadvice find-file-other-window (before vip-add-suffix-advice activate)
-"Use `read-file-name' for reading arguments."
-(interactive (cons (read-file-name "Find file in other window: "
-				     nil default-directory)
-		     ;; if Mule and prefix argument, ask for coding system
-		     (if (or (boundp 'MULE)    ; mule integrated Emacs 19
-			     (featurep 'mule)) ; mule integrated XEmacs 20
-			 (list
-			  (and current-prefix-arg
-			       (read-coding-system "Coding-system: "))))
-		     )))
-(defadvice find-file-other-frame (before vip-add-suffix-advice activate)
-"Use `read-file-name' for reading arguments."
-(interactive (cons (read-file-name "Find file in other frame: "
-				     nil default-directory)
-		     ;; if Mule and prefix argument, ask for coding system
-		     (if (or (boundp 'MULE)    ; mule integrated Emacs 19
-			     (featurep 'mule)) ; mule integrated XEmacs 20
-			 (list
-			  (and current-prefix-arg
-			       (read-coding-system "Coding-system: "))))
-		     )))
-(defadvice read-file-name (around vip-suffix-advice activate)
-"Tell `exit-minibuffer' to run `vip-file-add-suffix' as a hook."
-(let ((vip-minibuffer-exit-hook 'vip-file-add-suffix))
-ad-do-it))
-;; yank and pop
-(defsubst vip-yank (text)
-"Yank TEXT silently. This works correctly with Emacs's yank-pop command."
-(insert text)
-(setq this-command 'yank))
-(defun vip-put-back (arg)
-"Put back after point/below line."
-(interactive "P")
-(let ((val (vip-p-val arg))
-	(text (if vip-use-register
-		  (cond ((vip-valid-register vip-use-register '(digit))
-			 (current-kill (- vip-use-register ?1) 'do-not-rotate))
-			((vip-valid-register vip-use-register)
-			 (get-register (downcase vip-use-register)))
-			(t (error vip-InvalidRegister vip-use-register)))
-		(current-kill 0))))
-(if (null text)
-	(if vip-use-register
-	    (let ((reg vip-use-register))
-	      (setq vip-use-register nil)
-	      (error vip-EmptyRegister reg))
-	  (error "")))
-(setq vip-use-register nil)
-(if (vip-end-with-a-newline-p text)
-	(progn
-	  (end-of-line)
-	  (if (eobp)
-	      (insert "\n")
-	    (forward-line 1))
-	  (beginning-of-line))
-(if (not (eolp)) (vip-forward-char-carefully)))
-(set-marker (vip-mark-marker) (point) (current-buffer))
-(vip-set-destructive-command
-(list 'vip-put-back val nil vip-use-register nil nil))
-(vip-loop val (vip-yank text)))
-;; Vi puts cursor on the last char when the yanked text doesn't contain a
-;; newline; it leaves the cursor at the beginning when the text contains
-;; a newline
-(if (vip-same-line (point) (mark))
-(or (= (point) (mark)) (vip-backward-char-carefully))
-(exchange-point-and-mark)
-(if (bolp)
-	(back-to-indentation)))
-(vip-deactivate-mark))
-(defun vip-Put-back (arg)
-"Put back at point/above line."
-(interactive "P")
-(let ((val (vip-p-val arg))
-	(text (if vip-use-register
-		  (cond ((vip-valid-register vip-use-register '(digit))
-			 (current-kill (- vip-use-register ?1) 'do-not-rotate))
-			((vip-valid-register vip-use-register)
-			 (get-register (downcase vip-use-register)))
-			(t (error vip-InvalidRegister vip-use-register)))
-		(current-kill 0))))
-(if (null text)
-	(if vip-use-register
-	    (let ((reg vip-use-register))
-	      (setq vip-use-register nil)
-	      (error vip-EmptyRegister reg))
-	  (error "")))
-(setq vip-use-register nil)
-(if (vip-end-with-a-newline-p text) (beginning-of-line))
-(vip-set-destructive-command
-(list 'vip-Put-back val nil vip-use-register nil nil))
-(set-marker (vip-mark-marker) (point) (current-buffer))
-(vip-loop val (vip-yank text)))
-;; Vi puts cursor on the last char when the yanked text doesn't contain a
-;; newline; it leaves the cursor at the beginning when the text contains
-;; a newline
-(if (vip-same-line (point) (mark))
-(or (= (point) (mark)) (vip-backward-char-carefully))
-(exchange-point-and-mark)
-(if (bolp)
-	(back-to-indentation)))
-(vip-deactivate-mark))
-;; Copy region to kill-ring.
-;; If BEG and END do not belong to the same buffer, copy empty region.
-(defun vip-copy-region-as-kill (beg end)
-(condition-case nil
-(copy-region-as-kill beg end)
-(error (copy-region-as-kill beg beg))))
-(defun vip-delete-char (arg)
-"Delete character."
-(interactive "P")
-(let ((val (vip-p-val arg)))
-(vip-set-destructive-command (list 'vip-delete-char val nil nil nil nil))
-(if (> val 1)
-	(save-excursion
-	  (let ((here (point)))
-	    (end-of-line)
-	    (if (> val (- (point) here))
-		(setq val (- (point) here))))))
-(if (and (eq val 0) (not vip-ex-style-motion)) (setq val 1))
-(if (and vip-ex-style-motion (eolp))
-	(if (bolp) (error "") (setq val 0))) ; not bol---simply back 1 ch
-(if vip-use-register
-	(progn
-	  (cond ((vip-valid-register vip-use-register '((Letter)))
-		 (vip-append-to-register
-		  (downcase vip-use-register) (point) (- (point) val)))
-		((vip-valid-register vip-use-register)
-		 (copy-to-register
-		  vip-use-register (point) (- (point) val) nil))
-		(t (error vip-InvalidRegister vip-use-register)))
-	  (setq vip-use-register nil)))
-(if vip-ex-style-motion
-	(progn
-	  (delete-char val t)
-	  (if (and (eolp) (not (bolp))) (backward-char 1)))
-(if (eolp)
-(delete-backward-char val t)
-(delete-char val t)))))
-(defun vip-delete-backward-char (arg)
-"Delete previous character. On reaching beginning of line, stop and beep."
-(interactive "P")
-(let ((val (vip-p-val arg)))
-(vip-set-destructive-command
-(list 'vip-delete-backward-char val nil nil nil nil))
-(if (> val 1)
-	(save-excursion
-	  (let ((here (point)))
-	    (beginning-of-line)
-	    (if (> val (- here (point)))
-		(setq val (- here (point)))))))
-(if vip-use-register
-	(progn
-	  (cond ((vip-valid-register vip-use-register '(Letter))
-		 (vip-append-to-register
-		  (downcase vip-use-register) (point) (+ (point) val)))
-		((vip-valid-register vip-use-register)
-		 (copy-to-register
-		  vip-use-register (point) (+ (point) val) nil))
-		(t (error vip-InvalidRegister vip-use-register)))
-	  (setq vip-use-register nil)))
-(if (bolp) (ding)
-(delete-backward-char val t))))
-(defun vip-del-backward-char-in-insert ()
-"Delete 1 char backwards while in insert mode."
-(interactive)
-(if (and vip-ex-style-editing-in-insert (bolp))
-(beep 1)
-(delete-backward-char 1 t)))
-(defun vip-del-backward-char-in-replace ()
-"Delete one character in replace mode.
-If `vip-delete-backwards-in-replace' is t, then DEL key actually deletes
-charecters. If it is nil, then the cursor just moves backwards, similarly
-to Vi. The variable `vip-ex-style-editing-in-insert', if t, doesn't let the
-cursor move past the beginning of line."
-(interactive)
-(cond (vip-delete-backwards-in-replace
-	 (cond ((not (bolp))
-		(delete-backward-char 1 t))
-	       (vip-ex-style-editing-in-insert
-		(beep 1))
-	       ((bobp)
-		(beep 1))
-	       (t
-		(delete-backward-char 1 t))))
-	(vip-ex-style-editing-in-insert
-	 (if (bolp)
-	     (beep 1)
-	   (backward-char 1)))
-	(t
-	 (backward-char 1))))
-;; join lines.
-(defun vip-join-lines (arg)
-"Join this line to next, if ARG is nil.  Otherwise, join ARG lines."
-(interactive "*P")
-(let ((val (vip-P-val arg)))
-(vip-set-destructive-command (list 'vip-join-lines val nil nil nil nil))
-(vip-loop (if (null val) 1 (1- val))
-	      (progn
-		(end-of-line)
-		(if (not (eobp))
-		    (progn
-		      (forward-line 1)
-		      (delete-region (point) (1- (point)))
-		      (fixup-whitespace)))))))
-;; Replace state
-(defun vip-change (beg end)
-(if (markerp beg) (setq beg (marker-position beg)))
-(if (markerp end) (setq end (marker-position end)))
-;; beg is sometimes (mark t), which may be nil
-(or beg (setq beg end))
-(vip-set-complex-command-for-undo)
-(if vip-use-register
-(progn
-	(copy-to-register vip-use-register beg end nil)
-	(setq vip-use-register nil)))
-(vip-set-replace-overlay beg end)
-(setq last-command nil) ; separate repl text from prev kills
-(if (= (vip-replace-start) (point-max))
-(error "End of buffer"))
-(setq vip-last-replace-region
-	(buffer-substring (vip-replace-start)
-			  (vip-replace-end)))
-;; protect against error while inserting "@" and other disasters
-;; (e.g., read-only buff)
-(condition-case conds
-(if (or vip-allow-multiline-replace-regions
-	      (vip-same-line (vip-replace-start)
-			     (vip-replace-end)))
-	  (progn
-	    ;; tabs cause problems in replace, so untabify
-	    (goto-char (vip-replace-end))
-	    (insert-before-markers "@") ; put placeholder after the TAB
-	    (untabify (vip-replace-start) (point))
-	    ;; del @, don't put on kill ring
-	    (delete-backward-char 1)
-	    (vip-set-replace-overlay-glyphs
-	     vip-replace-region-start-delimiter
-	     vip-replace-region-end-delimiter)
-	    ;; this move takes care of the last posn in the overlay, which
-	    ;; has to be shifted because of insert. We can't simply insert
-	    ;; "$" before-markers because then overlay-start will shift the
-	    ;; beginning of the overlay in case we are replacing a single
-	    ;; character. This fixes the bug with `s' and `cl' commands.
-	    (vip-move-replace-overlay (vip-replace-start) (point))
-	    (goto-char (vip-replace-start))
-	    (vip-change-state-to-replace t))
-	(kill-region (vip-replace-start)
-		     (vip-replace-end))
-	(vip-hide-replace-overlay)
-	(vip-change-state-to-insert))
-(error ;; make sure that the overlay doesn't stay.
-;; go back to the original point
-(goto-char (vip-replace-start))
-(vip-hide-replace-overlay)
-(vip-message-conditions conds))))
-(defun vip-change-subr (beg end)
-;; beg is sometimes (mark t), which may be nil
-(or beg (setq beg end))
-(if vip-use-register
-(progn
-	(copy-to-register vip-use-register beg end nil)
-	(setq vip-use-register nil)))
-(kill-region beg end)
-(setq this-command 'vip-change)
-(vip-yank-last-insertion))
-(defun vip-toggle-case (arg)
-"Toggle character case."
-(interactive "P")
-(let ((val (vip-p-val arg)) (c))
-(vip-set-destructive-command (list 'vip-toggle-case val nil nil nil nil))
-(while (> val 0)
-(setq c (following-char))
-(delete-char 1 nil)
-(if (eq c (upcase c))
-	  (insert-char (downcase c) 1)
-	(insert-char (upcase c) 1))
-(if (eolp) (backward-char 1))
-(setq val (1- val)))))
-;; query replace
-(defun vip-query-replace ()
-"Query replace.
-If a null string is suplied as the string to be replaced,
-the query replace mode will toggle between string replace
-and regexp replace."
-(interactive)
-(let (str)
-(setq str (vip-read-string-with-history
-	       (if vip-re-query-replace "Query replace regexp: "
-		 "Query replace: ")
-	       nil  ; no initial
-	       'vip-replace1-history
-	       (car vip-replace1-history) ; default
-	       ))
-(if (string= str "")
-	(progn
-	  (setq vip-re-query-replace (not vip-re-query-replace))
-	  (message "Query replace mode changed to %s"
-		   (if vip-re-query-replace "regexp replace"
-		     "string replace")))
-(if vip-re-query-replace
-	  (query-replace-regexp
-	   str
-	   (vip-read-string-with-history
-	    (format "Query replace regexp `%s' with: " str)
-	    nil  ; no initial
-	    'vip-replace1-history
-	    (car vip-replace1-history) ; default
-	    ))
-	(query-replace
-	 str
-	 (vip-read-string-with-history
-	  (format "Query replace `%s' with: " str)
-	  nil  ; no initial
-	  'vip-replace1-history
-	  (car vip-replace1-history) ; default
-	  ))))))
-;; marking
-(defun vip-mark-beginning-of-buffer ()
-"Mark beginning of buffer."
-(interactive)
-(push-mark (point))
-(goto-char (point-min))
-(exchange-point-and-mark)
-(message "Mark set at the beginning of buffer"))
-(defun vip-mark-end-of-buffer ()
-"Mark end of buffer."
-(interactive)
-(push-mark (point))
-(goto-char (point-max))
-(exchange-point-and-mark)
-(message "Mark set at the end of buffer"))
-(defun vip-mark-point ()
-"Set mark at point of buffer."
-(interactive)
-(let ((char (read-char)))
-(cond ((and (<= ?a char) (<= char ?z))
-	   (point-to-register (1+ (- char ?a))))
-	  ((= char ?<) (vip-mark-beginning-of-buffer))
-	  ((= char ?>) (vip-mark-end-of-buffer))
-	  ((= char ?.) (vip-set-mark-if-necessary))
-	  ((= char ?,) (vip-cycle-through-mark-ring))
-	  ((= char ?D) (mark-defun))
-	  (t (error ""))
-	  )))
-;; Algorithm: If first invocation of this command save mark on ring, goto
-;; mark, M0, and pop the most recent elt from the mark ring into mark,
-;; making it into the new mark, M1.
-;; Push this mark back and set mark to the original point position, p1.
-;; So, if you hit '' or `` then you can return to p1.
-;;
-;; If repeated command, pop top elt from the ring into mark and
-;; jump there. This forgets the position, p1, and puts M1 back into mark.
-;; Then we save the current pos, which is M0, jump to M1 and pop M2 from
-;; the ring into mark.  Push M2 back on the ring and set mark to M0.
-;; etc.
-(defun vip-cycle-through-mark-ring ()
-"Visit previous locations on the mark ring.
-One can use `` and '' to temporarily jump 1 step back."
-(let* ((sv-pt (point)))
-;; if repeated `m,' command, pop the previously saved mark.
-;; Prev saved mark is actually prev saved point. It is used if the
-;; user types `` or '' and is discarded
-;; from the mark ring by the next `m,' command.
-;; In any case, go to the previous or previously saved mark.
-;; Then push the current mark (popped off the ring) and set current
-;; point to be the mark. Current pt as mark is discarded by the next
-;; m, command.
-(if (eq last-command 'vip-cycle-through-mark-ring)
-	   ()
-	 ;; save current mark if the first iteration
-	 (setq mark-ring (delete (vip-mark-marker) mark-ring))
-	 (if (mark t)
-	     (push-mark (mark t) t)) )
-(pop-mark)
-(set-mark-command 1)
-;; don't duplicate mark on the ring
-(setq mark-ring (delete (vip-mark-marker) mark-ring))
-(push-mark sv-pt t)
-(vip-deactivate-mark)
-(setq this-command 'vip-cycle-through-mark-ring)
-))
-(defun vip-goto-mark (arg)
-"Go to mark."
-(interactive "P")
-(let ((char (read-char))
-	(com (vip-getcom arg)))
-(vip-goto-mark-subr char com nil)))
-(defun vip-goto-mark-and-skip-white (arg)
-"Go to mark and skip to first non-white character on line."
-(interactive "P")
-(let ((char (read-char))
-	(com (vip-getCom arg)))
-(vip-goto-mark-subr char com t)))
-(defun vip-goto-mark-subr (char com skip-white)
-(if (eobp)
-(if (bobp)
-	  (error "Empty buffer")
-	(backward-char 1)))
-(cond ((vip-valid-register char '(letter))
-	 (let* ((buff (current-buffer))
-	        (reg (1+ (- char ?a)))
-	        (text-marker (get-register reg)))
-	   (if com (vip-move-marker-locally 'vip-com-point (point)))
-	   (if (not (vip-valid-marker text-marker))
-	       (error vip-EmptyTextmarker char))
-	   (if (and (vip-same-line (point) vip-last-jump)
-		    (= (point) vip-last-jump-ignore))
-	       (push-mark vip-last-jump t)
-	     (push-mark nil t)) ; no msg
-	   (vip-register-to-point reg)
-	   (setq vip-last-jump (point-marker))
-	   (cond (skip-white
-		  (back-to-indentation)
-		  (setq vip-last-jump-ignore (point))))
-	   (if com
-	       (if (equal buff (current-buffer))
-		   (vip-execute-com (if skip-white
-					'vip-goto-mark-and-skip-white
-				      'vip-goto-mark)
-				    nil com)
-		 (switch-to-buffer buff)
-		 (goto-char vip-com-point)
-		 (vip-change-state-to-vi)
-		 (error "")))))
-	((and (not skip-white) (= char ?`))
-	 (if com (vip-move-marker-locally 'vip-com-point (point)))
-	 (if (and (vip-same-line (point) vip-last-jump)
-		  (= (point) vip-last-jump-ignore))
-	     (goto-char vip-last-jump))
-	 (if (null (mark t)) (error "Mark is not set in this buffer"))
-	 (if (= (point) (mark t)) (pop-mark))
-	 (exchange-point-and-mark)
-	 (setq vip-last-jump (point-marker)
-	       vip-last-jump-ignore 0)
-	 (if com (vip-execute-com 'vip-goto-mark nil com)))
-	((and skip-white (= char ?'))
-	 (if com (vip-move-marker-locally 'vip-com-point (point)))
-	 (if (and (vip-same-line (point) vip-last-jump)
-		  (= (point) vip-last-jump-ignore))
-	     (goto-char vip-last-jump))
-	 (if (= (point) (mark t)) (pop-mark))
-	 (exchange-point-and-mark)
-	 (setq vip-last-jump (point))
-	 (back-to-indentation)
-	 (setq vip-last-jump-ignore (point))
-	 (if com (vip-execute-com 'vip-goto-mark-and-skip-white nil com)))
-	(t (error vip-InvalidTextmarker char))))
-(defun vip-insert-tab ()
-(interactive)
-(insert-tab))
-(defun vip-exchange-point-and-mark ()
-(interactive)
-(exchange-point-and-mark)
-(back-to-indentation))
-;; Input Mode Indentation
-;; Returns t, if the string before point matches the regexp STR.
-(defsubst vip-looking-back (str)
-(and (save-excursion (re-search-backward str nil t))
-(= (point) (match-end 0))))
-(defun vip-forward-indent ()
-"Indent forward -- `C-t' in Vi."
-(interactive)
-(setq vip-cted t)
-(indent-to (+ (current-column) vip-shift-width)))
-(defun vip-backward-indent ()
-"Backtab, C-d in VI"
-(interactive)
-(if vip-cted
-(let ((p (point)) (c (current-column)) bol (indent t))
-	(if (vip-looking-back "[0^]")
-	    (progn
-	      (if (eq ?^ (preceding-char))
-		  (setq vip-preserve-indent t))
-	      (delete-backward-char 1)
-	      (setq p (point))
-	      (setq indent nil)))
-	(save-excursion
-	  (beginning-of-line)
-	  (setq bol (point)))
-	(if (re-search-backward "[^ \t]" bol 1) (forward-char))
-	(delete-region (point) p)
-	(if indent
-	    (indent-to (- c vip-shift-width)))
-	(if (or (bolp) (vip-looking-back "[^ \t]"))
-	    (setq vip-cted nil)))))
-(defun vip-autoindent ()
-"Auto Indentation, Vi-style."
-(interactive)
-(let ((col (current-indentation)))
-(if abbrev-mode (expand-abbrev))
-(if vip-preserve-indent
-	(setq vip-preserve-indent nil)
-(setq vip-current-indent col))
-;; don't leave whitespace lines around
-(if (memq last-command
-	      '(vip-autoindent
-		vip-open-line vip-Open-line
-		vip-replace-state-exit-cmd))
-	(indent-to-left-margin))
-;; use \n instead of newline, or else <Return> will move the insert point
-;;(newline 1)
-(insert "\n")
-(if vip-auto-indent
-	(progn
-	  (setq vip-cted t)
-	  (if vip-electric-mode
-	      (indent-according-to-mode)
-	    (indent-to vip-current-indent))
-	  ))
-))
-;; Viewing registers
-(defun vip-ket-function (arg)
-"Function called by \], the ket. View registers and call \]\]."
-(interactive "P")
-(let ((reg (read-char)))
-(cond ((vip-valid-register reg '(letter Letter))
-	   (view-register (downcase reg)))
-	  ((vip-valid-register reg '(digit))
-	   (let ((text (current-kill (- reg ?1) 'do-not-rotate)))
-	     (save-excursion
-	       (set-buffer (get-buffer-create "*Output*"))
-	       (delete-region (point-min) (point-max))
-	       (insert (format "Register %c contains the string:\n" reg))
-	       (insert text)
-	       (goto-char (point-min)))
-	     (display-buffer "*Output*")))
-	  ((= ?\] reg)
-	   (vip-next-heading arg))
-	  (t (error
-	      vip-InvalidRegister reg)))))
-(defun vip-brac-function (arg)
-"Function called by \[, the brac. View textmarkers and call \[\["
-(interactive "P")
-(let ((reg (read-char)))
-(cond ((= ?\[ reg)
-	   (vip-prev-heading arg))
-	  ((= ?\] reg)
-	   (vip-heading-end arg))
-	  ((vip-valid-register reg '(letter))
-	   (let* ((val (get-register (1+ (- reg ?a))))
-		  (buf (if (not val)
-			   (error vip-EmptyTextmarker reg)
-			 (marker-buffer val)))
-		  (pos (marker-position val))
-		  line-no text (s pos) (e pos))
-	     (save-excursion
-	       (set-buffer (get-buffer-create "*Output*"))
-	       (delete-region (point-min) (point-max))
-	       (if (and buf pos)
-		   (progn
-		     (save-excursion
-		       (set-buffer buf)
-		       (setq line-no (1+ (count-lines (point-min) val)))
-		       (goto-char pos)
-		       (beginning-of-line)
-		       (if (re-search-backward "[^ \t]" nil t)
-			   (progn
-			     (beginning-of-line)
-			     (setq s (point))))
-		       (goto-char pos)
-		       (forward-line 1)
-		       (if (re-search-forward "[^ \t]" nil t)
-			   (progn
-			     (end-of-line)
-			     (setq e (point))))
-		       (setq text (buffer-substring s e))
-		       (setq text (format "%s<%c>%s"
-					  (substring text 0 (- pos s))
-					  reg (substring text (- pos s)))))
-		     (insert
-		      (format
-		       "Textmarker `%c' is in buffer `%s' at line %d.\n"
-				     reg (buffer-name buf) line-no))
-		     (insert (format "Here is some text around %c:\n\n %s"
-				     reg text)))
-		 (insert (format vip-EmptyTextmarker reg)))
-	       (goto-char (point-min)))
-	     (display-buffer "*Output*")))
-	  (t (error vip-InvalidTextmarker reg)))))
-;; commands in insertion mode
-(defun vip-delete-backward-word (arg)
-"Delete previous word."
-(interactive "p")
-(save-excursion
-(push-mark nil t)
-(backward-word arg)
-(delete-region (point) (mark t))
-(pop-mark)))
-(defun vip-set-expert-level (&optional dont-change-unless)
-"Sets the expert level for a Viper user.
-Can be called interactively to change (temporarily or permanently) the
-current expert level.
-The optional argument DONT-CHANGE-UNLESS if not nil, says that
-the level should not be changed, unless its current value is
-meaningless (i.e., not one of 1,2,3,4,5).
-User level determines the setting of Viper variables that are most
-sensitive for VI-style look-and-feel."
-(interactive)
-(if (not (natnump vip-expert-level)) (setq vip-expert-level 0))
-(save-window-excursion
-(delete-other-windows)
-;; if 0 < vip-expert-level < vip-max-expert-level
-;;    & dont-change-unless = t -- use it; else ask
-(vip-ask-level dont-change-unless))
-(setq vip-always          	    	t
-	vip-ex-style-motion 	    	t
-	vip-ex-style-editing-in-insert  t
-	vip-want-ctl-h-help nil)
-(cond ((eq vip-expert-level 1) ; novice or beginner
-	 (global-set-key   ; in emacs-state
-	  vip-toggle-key
-	  (if (vip-window-display-p) 'vip-iconify 'suspend-emacs))
-	 (setq vip-no-multiple-ESC	     t
-	       vip-re-search	    	     t
-	       vip-vi-style-in-minibuffer    t
-	       vip-search-wrap-around-t	     t
-	       vip-want-emacs-keys-in-vi     nil
-	       vip-want-emacs-keys-in-insert nil))
-	((and (> vip-expert-level 1) (< vip-expert-level 5))
-	 ;; intermediate to guru
-	 (setq vip-no-multiple-ESC     (if (vip-window-display-p) t 'twice)
-	       vip-want-emacs-keys-in-vi     t
-	       vip-want-emacs-keys-in-insert (> vip-expert-level 2))
-	 (if (eq vip-expert-level 4) ; respect user's ex-style motions
-	     	    	    	     ; and vip-no-multiple-ESC
-	     (progn
-	       (setq-default vip-ex-style-editing-in-insert
-			     (cdr (assoc 'vip-ex-style-editing-in-insert
-					 vip-saved-user-settings))
-			     vip-ex-style-motion
-			     (cdr (assoc 'vip-ex-style-motion
-					 vip-saved-user-settings)))
-	       (setq vip-ex-style-motion
-		     (cdr (assoc 'vip-ex-style-motion vip-saved-user-settings))
-		     vip-ex-style-editing-in-insert
-		     (cdr (assoc 'vip-ex-style-editing-in-insert
-				 vip-saved-user-settings))
-		     vip-re-search
-		     (cdr (assoc 'vip-re-search vip-saved-user-settings))
-		     vip-no-multiple-ESC
-		     (cdr (assoc 'vip-no-multiple-ESC
-				 vip-saved-user-settings))))))
-	;; A wizard!!
-	;; Ideally, if 5 is selected, a buffer should pop up to let the
-	;; user toggle the values of variables.
-	(t (setq-default vip-ex-style-editing-in-insert
-			 (cdr (assoc 'vip-ex-style-editing-in-insert
-				     vip-saved-user-settings))
-			 vip-ex-style-motion
-			 (cdr (assoc 'vip-ex-style-motion
-				     vip-saved-user-settings)))
-	   (setq  vip-want-ctl-h-help
-		  (cdr (assoc 'vip-want-ctl-h-help vip-saved-user-settings))
-		  vip-always
-		  (cdr (assoc 'vip-always vip-saved-user-settings))
-		  vip-no-multiple-ESC
-		  (cdr (assoc 'vip-no-multiple-ESC vip-saved-user-settings))
-		  vip-ex-style-motion
-		  (cdr (assoc 'vip-ex-style-motion vip-saved-user-settings))
-		  vip-ex-style-editing-in-insert
-		  (cdr (assoc 'vip-ex-style-editing-in-insert
-			      vip-saved-user-settings))
-		  vip-re-search
-		  (cdr (assoc 'vip-re-search vip-saved-user-settings))
-		  vip-want-emacs-keys-in-vi
-		  (cdr (assoc 'vip-want-emacs-keys-in-vi
-			      vip-saved-user-settings))
-		  vip-want-emacs-keys-in-insert
-		  (cdr (assoc 'vip-want-emacs-keys-in-insert
-			      vip-saved-user-settings)))))
-(vip-set-mode-vars-for vip-current-state)
-(if (or vip-always
-	  (and (> vip-expert-level 0) (> 5 vip-expert-level)))
-(vip-set-hooks)))
-;; Ask user expert level.
-(defun vip-ask-level (dont-change-unless)
-(let ((ask-buffer " *vip-ask-level*")
-	level-changed repeated)
-(save-window-excursion
-(switch-to-buffer ask-buffer)
-(or (eq this-command 'vip-set-expert-level)
-	  (and
-	   (<= vip-expert-level vip-max-expert-level)
-	   (>= vip-expert-level 1))
-	  (progn
-	    (insert "
-	      *** Important Notice for VIP users***
-			  This is VIPER
-@joke
-Viper Is a Package for Emacs Rebels,
-a VI Plan for Emacs Rescue,
-and a venomous VI PERil.
-@end joke
-Technically speaking, Viper is a new Vi emulator that replaces
-the old VIP package.
-Viper emulates Vi much better than VIP.  It also significantly
-extends and improves upon Vi in many useful ways.
-Although many VIP settings in your ~/.vip are compatible with Viper,
-you may have to change some of them. Please refer to the documentation,
-which can be obtained by executing
-:help
-when Viper is in Vi state.
-If you will be so lucky as to find a bug, report it via the command
-:submitReport
-Type any key to continue... ")
-	    (read-char)
-	    (erase-buffer)))
-(while (or (> vip-expert-level vip-max-expert-level)
-		 (< vip-expert-level 1)
-		 (null dont-change-unless))
-	(erase-buffer)
-	(if repeated
-	    (progn
-	      (message "Invalid user level")
-	      (beep 1))
-	  (setq repeated t))
-	(setq dont-change-unless t
-	      level-changed t)
-	(insert "
-Please specify your level of familiarity with the venomous VI PERil
-(and the VI Plan for Emacs Rescue).
-You can change it at any time by typing `M-x vip-set-expert-level RET'
-1 -- BEGINNER: Almost all Emacs features are suppressed.
-Feels almost like straight Vi. File name completion and
-command history in the minibuffer are thrown in as a bonus.
-To use Emacs productively, you must reach level 3 or higher.
-2 -- MASTER: C-c now has its standard Emacs meaning in Vi command state,
-	  so most Emacs commands can be used when Viper is in Vi state.
-	  Good progress---you are well on the way to level 3!
-3 -- GRAND MASTER: Like 3, but most Emacs commands are available also
-in Viper's insert state.
-4 -- GURU: Like 3, but user settings are respected for vip-no-multiple-ESC,
-	  vip-re-search, vip-ex-style-motion, & vip-ex-style-editing-in-insert
-	  variables. Adjust these settings to your taste.
-5 -- WIZARD: Like 4, but user settings are also respected for vip-always,
-	  vip-want-ctl-h-help, vip-want-emacs-keys-in-vi, and
-	  vip-want-emacs-keys-in-insert. Adjust these to your taste.
-Please, specify your level now: ")
-	(setq vip-expert-level (- (vip-read-char-exclusive) ?0))
-	) ; end while
-;; tell the user if level was changed
-(and level-changed
-	   (progn
-	     (insert
-	      (format "\n\n\n\n\n\t\tYou have selected user level %d"
-		      vip-expert-level))
-	     (if (y-or-n-p "Do you wish to make this change permanent? ")
-		 ;; save the setting for vip-expert-level
-		 (vip-save-setting
-		  'vip-expert-level
-		  (format "Saving user level %d ..." vip-expert-level)
-		  vip-custom-file-name))
-	     ))
-(bury-buffer) ; remove ask-buffer from screen
-(message "")
-)))
-(defun viper-version ()
-(interactive)
-(message "Viper version is %s" viper-version))
-(defalias 'vip-version 'viper-version)
-(defun vip-nil ()
-(interactive)
-(beep 1))
-;; if ENFORCE-BUFFER is not nil, error if CHAR is a marker in another buffer
-(defun vip-register-to-point (char &optional enforce-buffer)
-"Like jump-to-register, but switches to another buffer in another window."
-(interactive "cViper register to point: ")
-(let ((val (get-register char)))
-(cond
-((and (fboundp 'frame-configuration-p)
-	   (frame-configuration-p val))
-(set-frame-configuration val))
-((window-configuration-p val)
-(set-window-configuration val))
-((vip-valid-marker val)
-(if (and enforce-buffer
-	       (not (equal (current-buffer) (marker-buffer val))))
-	  (error (concat vip-EmptyTextmarker " in this buffer")
-		 (1- (+ char ?a))))
-(pop-to-buffer  (marker-buffer val))
-(goto-char val))
-((and (consp val) (eq (car val) 'file))
-(find-file (cdr val)))
-(t
-(error vip-EmptyTextmarker (1- (+ char ?a)))))))
-(defun vip-save-kill-buffer ()
-"Save then kill current buffer. "
-(interactive)
-(if (< vip-expert-level 2)
-(save-buffers-kill-emacs)
-(save-buffer)
-(kill-buffer (current-buffer))))
-;;; Bug Report
-(defun vip-submit-report ()
-"Submit bug report on Viper."
-(interactive)
-(let ((reporter-prompt-for-summary-p t)
-	(vip-device-type (vip-device-type))
-	color-display-p frame-parameters
-	minibuffer-emacs-face minibuffer-vi-face minibuffer-insert-face
-	varlist salutation window-config)
-;; If mode info is needed, add variable to `let' and then set it below,
-;; like we did with color-display-p.
-(setq color-display-p (if (vip-window-display-p)
-			      (vip-color-display-p)
-			    'non-x)
-	  minibuffer-vi-face (if (vip-has-face-support-p)
-				 (vip-get-face vip-minibuffer-vi-face)
-			       'non-x)
-	  minibuffer-insert-face (if (vip-has-face-support-p)
-				     (vip-get-face vip-minibuffer-insert-face)
-				   'non-x)
-	  minibuffer-emacs-face (if (vip-has-face-support-p)
-				    (vip-get-face vip-minibuffer-emacs-face)
-				  'non-x)
-	  frame-parameters (if (fboundp 'frame-parameters)
-			       (frame-parameters (selected-frame))))
-(setq varlist (list 'vip-vi-minibuffer-minor-mode
-		        'vip-insert-minibuffer-minor-mode
-		        'vip-vi-intercept-minor-mode
-		        'vip-vi-local-user-minor-mode
-		        'vip-vi-kbd-minor-mode
-		        'vip-vi-global-user-minor-mode
-		        'vip-vi-state-modifier-minor-mode
-		        'vip-vi-diehard-minor-mode
-		        'vip-vi-basic-minor-mode
-		        'vip-replace-minor-mode
-		        'vip-insert-intercept-minor-mode
-		        'vip-insert-local-user-minor-mode
-		        'vip-insert-kbd-minor-mode
-		        'vip-insert-global-user-minor-mode
-		        'vip-insert-state-modifier-minor-mode
-		        'vip-insert-diehard-minor-mode
-		        'vip-insert-basic-minor-mode
-		        'vip-emacs-intercept-minor-mode
-		        'vip-emacs-local-user-minor-mode
-		        'vip-emacs-kbd-minor-mode
-		        'vip-emacs-global-user-minor-mode
-		        'vip-emacs-state-modifier-minor-mode
-		        'vip-automatic-iso-accents
-		        'vip-want-emacs-keys-in-insert
-		        'vip-want-emacs-keys-in-vi
-		        'vip-keep-point-on-undo
-		        'vip-no-multiple-ESC
-		        'vip-ESC-key
-		        'vip-want-ctl-h-help
-		        'vip-ex-style-editing-in-insert
-		        'vip-delete-backwards-in-replace
-		        'vip-vi-style-in-minibuffer
-		        'vip-vi-state-hook
-		        'vip-insert-state-hook
-		        'vip-replace-state-hook
-		        'vip-emacs-state-hook
-		        'ex-cycle-other-window
-		        'ex-cycle-through-non-files
-		        'vip-expert-level
-		        'major-mode
-		        'vip-device-type
-			'color-display-p
-			'frame-parameters
-			'minibuffer-vi-face
-			'minibuffer-insert-face
-			'minibuffer-emacs-face
-			))
-	  (setq salutation "
-Congratulations! You may have unearthed a bug in Viper!
-Please mail a concise, accurate summary of the problem to the address above.
--------------------------------------------------------------------")
-	  (setq window-config (current-window-configuration))
-	  (with-output-to-temp-buffer " *vip-info*"
-	    (switch-to-buffer " *vip-info*")
-	    (delete-other-windows)
-	    (princ "
-PLEASE FOLLOW THESE PROCEDURES
-------------------------------
-Before reporting a bug, please verify that it is related to Viper, and is
-not cause by other packages you are using.
-Don't report compilation warnings, unless you are certain that there is a
-problem. These warnings are normal and unavoidable.
-Please note that users should not modify variables and keymaps other than
-those advertised in the manual. Such `customization' is likely to crash
-Viper, as it would any other improperly customized Emacs package.
-If you are reporting an error message received while executing one of the
-Viper commands, type:
-M-x set-variable <Return> debug-on-error <Return> t <Return>
-Then reproduce the error. The above command will cause Emacs to produce a
-back trace of the execution that leads to the error. Please include this
-trace in your bug report.
-If you believe that one of Viper's commands goes into an infinite loop
-\(e.g., Emacs freezes\), type:
-M-x set-variable <Return> debug-on-quit <Return> t <Return>
-Then reproduce the problem. Wait for a few seconds, then type C-g to abort
-the current command. Include the resulting back trace in the bug report.
-Mail anyway (y or n)? ")
-	    (if (y-or-n-p "Mail anyway? ")
-		()
-	      (set-window-configuration window-config)
-	      (error "Bug report aborted")))
-	  (require 'reporter)
-	  (set-window-configuration window-config)
-	  (reporter-submit-bug-report "kifer@cs.sunysb.edu"
-				      (vip-version)
-				      varlist
-				      nil 'delete-other-windows
-				      salutation)
-	  ))
-;; Smoothes out the difference between Emacs' unread-command-events
-;; and XEmacs unread-command-event. Arg is a character, an event, a list of
-;; events or a sequence of keys.
-;;
-;; Due to the way unread-command-events in Emacs (not XEmacs), a non-event
-;; symbol in unread-command-events list may cause Emacs to turn this symbol
-;; into an event. Below, we delete nil from event lists, since nil is the most
-;; common symbol that might appear in this wrong context.
-(defun vip-set-unread-command-events (arg)
-(if vip-emacs-p
-(setq
-unread-command-events
-(let ((new-events
-	      (cond ((eventp arg) (list arg))
-		    ((listp arg) arg)
-		    ((sequencep arg)
-		     (listify-key-sequence arg))
-		    (t (error
-			"vip-set-unread-command-events: Invalid argument, %S"
-			arg)))))
-	 (if (not (eventp nil))
-	     (setq new-events (delq nil new-events)))
-	 (append new-events unread-command-events)))
-;; XEmacs
-(setq
-unread-command-events
-(append
-(cond ((vip-characterp arg) (list (character-to-event arg)))
-	    ((eventp arg)  (list arg))
-	    ((stringp arg) (mapcar 'character-to-event arg))
-	    ((vectorp arg) (append arg nil)) ; turn into list
-	    ((listp arg) (vip-eventify-list-xemacs arg))
-	    (t (error
-		"vip-set-unread-command-events: Invalid argument, %S" arg)))
-unread-command-events))))
-;; list is assumed to be a list of events of characters
-(defun vip-eventify-list-xemacs (lis)
-(mapcar
-(function (lambda (elt)
-	       (cond ((vip-characterp elt) (character-to-event elt))
-		     ((eventp elt)  elt)
-		     (t (error
-			 "vip-eventify-list-xemacs: can't convert to event, %S"
-			 elt)))))
-lis))
-;; The following is provided for compatibility with older VIP's
-(defalias 'vip-change-mode-to-vi 'vip-change-state-to-vi)
-(defalias 'vip-change-mode-to-insert 'vip-change-state-to-insert)
-(defalias 'vip-change-mode-to-emacs 'vip-change-state-to-emacs)
-;;; Load .vip and set up hooks
 ;; This hook designed to enable Vi-style editing in comint-based modes."
 (defun vip-comint-mode-hook ()
 (setq require-final-newline nil
 	vip-ex-style-editing-in-insert nil
 	vip-ex-style-motion nil)
 (defvar html-mode-hook)
 (add-hook 'html-mode-hook 'viper-mode)
 (defvar html-helper-mode-hook)
 (add-hook 'html-helper-mode-hook 'viper-mode)
 (defvar java-mode-hook)
 (add-hook 'java-mode-hook 'viper-mode)
 (defvar emacs-lisp-mode-hook)
 (add-hook 'emacs-lisp-mode-hook 'viper-mode)
 (defvar lisp-mode-hook)
 (add-hook 'lisp-mode-hook 'viper-mode)
+(defvar lisp-interaction-mode-hook)
+(add-hook 'lisp-interaction-mode-hook 'viper-mode)
 (defvar bibtex-mode-hook)
 (add-hook 'bibtex-mode-hook 'viper-mode)
 (defvar cc-mode-hook)
 (defvar c-mode-hook)
 (add-hook 'c-mode-hook 'viper-mode)
 (defvar c++-mode-hook)
 (add-hook 'c++-mode-hook 'viper-mode)
-(defvar lisp-interaction-mode-hook)
-(add-hook 'lisp-interaction-mode-hook 'viper-mode)
 (defvar fortran-mode-hook)
-(add-hook 'fortran-mode-hook 'vip-mode)
+(add-hook 'fortran-mode-hook 'viper-mode)
+(defvar f90-mode-hook)
+(add-hook 'f90-mode-hook 'viper-mode)
 (defvar basic-mode-hook)
-(add-hook 'basic-mode-hook 'vip-mode)
+(add-hook 'basic-mode-hook 'viper-mode)
 (defvar bat-mode-hook)
-(add-hook 'bat-mode-hook 'vip-mode)
+(add-hook 'bat-mode-hook 'viper-mode)
+(defvar asm-mode-hook)
+(add-hook 'asm-mode-hook 'viper-mode)
+(defvar prolog-mode-hook)
+(add-hook 'prolog-mode-hook 'viper-mode)
 (defvar text-mode-hook)
 (add-hook 'text-mode-hook 'viper-mode)
 (add-hook 'completion-list-mode-hook 'viper-mode)
 (add-hook 'compilation-mode-hook     'viper-mode)
-(add-hook 'perl-mode-hook     'viper-mode)
+(add-hook 'perl-mode-hook    'viper-mode)
 (add-hook 'tcl-mode-hook     'viper-mode)
 (defvar emerge-startup-hook)
 (add-hook 'emerge-startup-hook 'vip-change-state-to-emacs)
 ;; In case Emerge was loaded before Viper.
 (defadvice emerge-quit (after vip-emerge-advice activate)
 "Run `vip-change-state-to-vi' after quitting emerge."
 (vip-change-state-to-vi))
-(vip-eval-after-load
-"asm-mode"
-'(defadvice asm-mode (after vip-asm-mode-ad activate)
-"Run `vip-change-state-to-vi' on entry."
-(vip-change-state-to-vi)))
 ;; passwd.el sets up its own buffer, which turns up in Vi mode,
 ;; thus overriding the local map. We don't need Vi mode here.
 (vip-eval-after-load
 "passwd"
 '(defadvice read-passwd-1 (before vip-passwd-ad activate)
 "Switch to emacs state while reading password."
 (vip-change-state-to-emacs)))
-(vip-eval-after-load
-"prolog"
-'(defadvice prolog-mode (after vip-prolog-ad activate)
-"Switch to Vi state in Prolog mode."
-(vip-change-state-to-vi)))
 ;; Emacs shell, ange-ftp, and comint-based modes
 (defvar comint-mode-hook)
 (vip-modify-major-mode
 'comint-mode 'insert-state vip-comint-mode-modifier-map)
 (defadvice Buffer-menu-mode (after vip-Buffer-menu-ad activate)
 "Switch to emacs mode."
 (vip-change-state-to-emacs))
 ;; View mode
-(if vip-emacs-p
+(defvar view-mode-hook)
-(progn
+(defvar view-hook)
-	(defvar view-mode-hook)
+(add-hook 'view-hook 'vip-change-state-to-emacs)
-	(add-hook 'view-mode-hook 'vip-change-state-to-emacs))
+(add-hook 'view-mode-hook 'vip-change-state-to-emacs)
-(defadvice view-minor-mode (after vip-view-ad activate)
-"Switch to Emacs state in View mode."
-(vip-change-state-to-emacs))
-(defvar view-hook)
-(add-hook 'view-hook 'vip-change-state-to-emacs))
 ;; For VM users.
 ;; Put summary and other VM buffers in Emacs state.
 (defvar vm-mode-hooks)
 (defvar vm-summary-mode-hooks)
 ;; In case RMAIL was loaded before Viper.
 (defadvice rmail-cease-edit (after vip-rmail-advice activate)
 "Switch to emacs state when done editing message."
 (vip-change-state-to-emacs))
 ) ; vip-set-hooks
-;; Set some useful macros
-;; These must be before we load .vip, so the user can unrecord them.
+;; these are primarily advices and Vi-ish variable settings
+(defun vip-non-hook-settings ()
-;; repeat the 2nd previous command without rotating the command history
-(vip-record-kbd-macro
+;; This var is not local in Emacs, so we make it local.
-(vector vip-repeat-from-history-key '\1) 'vi-state
+;; It must be local because although the stack of minor modes can be the same
-[(meta x) v i p - r e p e a t - f r o m - h i s t o r y return] 't)
+;; for all buffers, the associated *keymaps* can be different. In Viper,
-;; repeat the 3d previous command without rotating the command history
+;; vip-vi-local-user-map, vip-insert-local-user-map, and others can have
-(vip-record-kbd-macro
+;; different keymaps for different buffers.
-(vector vip-repeat-from-history-key '\2) 'vi-state
+;; Also, the keymaps associated with vip-vi/insert-state-modifier-minor-mode
-[(meta x) v i p - r e p e a t - f r o m - h i s t o r y return] 't)
+;; can be different.
+(make-variable-buffer-local 'minor-mode-map-alist)
-;; set the toggle case sensitivity and regexp search macros
-(vip-set-vi-search-style-macros nil)
+;; Viper changes the default mode-line-buffer-identification
+(setq-default mode-line-buffer-identification '(" %b"))
-;; Make %%% toggle parsing comments for matching parentheses
-(vip-record-kbd-macro
+;; setup emacs-supported vi-style feel
-"%%%" 'vi-state
+(setq next-line-add-newlines nil
-[(meta x) v i p - t o g g l e - p a r s e - s e x p - i g n o r e - c o m m e n t s return]
+	require-final-newline t)
-'t)
+(make-variable-buffer-local 'require-final-newline)
+;; don't bark when mark is inactive
+(setq mark-even-if-inactive t)
+(setq scroll-step 1)
+;; Variable displaying the current Viper state in the mode line.
+(vip-deflocalvar vip-mode-string vip-emacs-state-id)
+(or (memq 'vip-mode-string global-mode-string)
+(setq global-mode-string
+	    (append '("" vip-mode-string) (cdr global-mode-string))))
+(defadvice read-key-sequence (around vip-read-keyseq-ad activate)
+"Harness to work for Viper. This advice is harmless---don't worry!"
+(let (inhibit-quit event keyseq)
+(setq keyseq ad-do-it)
+(setq event (if vip-xemacs-p
+		      (elt keyseq 0) ; XEmacs returns vector of events
+		    (elt (listify-key-sequence keyseq) 0)))
+(if (vip-ESC-event-p event)
+	  (let (unread-command-events)
+	    (vip-set-unread-command-events keyseq)
+	    (if (vip-fast-keysequence-p)
+		(let ((vip-vi-global-user-minor-mode  nil)
+		      (vip-vi-local-user-minor-mode  nil)
+		      (vip-replace-minor-mode nil) ; actually unnecessary
+		      (vip-insert-global-user-minor-mode  nil)
+		      (vip-insert-local-user-minor-mode  nil))
+		  (setq keyseq ad-do-it))
+	      (setq keyseq ad-do-it))))
+keyseq))
+(defadvice describe-key (before vip-read-keyseq-ad protect activate)
+"Force to read key via `read-key-sequence'."
+(interactive (list (vip-events-to-keys
+			(read-key-sequence "Describe key: ")))))
+(defadvice describe-key-briefly (before vip-read-keyseq-ad protect activate)
+"Force to read key via `read-key-sequence'."
+(interactive (list (vip-events-to-keys
+			(read-key-sequence "Describe key briefly: ")))))
+;; Advice for use in find-file and read-file-name commands.
+(defadvice exit-minibuffer (before vip-exit-minibuffer-advice activate)
+"Run `vip-minibuffer-exit-hook' just before exiting the minibuffer."
+(run-hooks 'vip-minibuffer-exit-hook))
+(defadvice find-file (before vip-add-suffix-advice activate)
+"Use `read-file-name' for reading arguments."
+(interactive (cons (read-file-name "Find file: " nil default-directory)
+		       ;; if Mule and prefix argument, ask for coding system
+		       (if (or (boundp 'MULE)    ; mule integrated Emacs 19
+			       (featurep 'mule)) ; mule integrated XEmacs 20
+			   (list
+			    (and current-prefix-arg
+				 (read-coding-system "Coding-system: "))))
+		       )))
+(defadvice find-file-other-window (before vip-add-suffix-advice activate)
+"Use `read-file-name' for reading arguments."
+(interactive (cons (read-file-name "Find file in other window: "
+				       nil default-directory)
+		       ;; if Mule and prefix argument, ask for coding system
+		       (if (or (boundp 'MULE)    ; mule integrated Emacs 19
+			       (featurep 'mule)) ; mule integrated XEmacs 20
+			   (list
+			    (and current-prefix-arg
+				 (read-coding-system "Coding-system: "))))
+		       )))
+(defadvice find-file-other-frame (before vip-add-suffix-advice activate)
+"Use `read-file-name' for reading arguments."
+(interactive (cons (read-file-name "Find file in other frame: "
+				       nil default-directory)
+		       ;; if Mule and prefix argument, ask for coding system
+		       (if (or (boundp 'MULE)    ; mule integrated Emacs 19
+			       (featurep 'mule)) ; mule integrated XEmacs 20
+			   (list
+			    (and current-prefix-arg
+				 (read-coding-system "Coding-system: "))))
+		       )))
+(defadvice read-file-name (around vip-suffix-advice activate)
+"Tell `exit-minibuffer' to run `vip-file-add-suffix' as a hook."
+(let ((vip-minibuffer-exit-hook 'vip-file-add-suffix))
+ad-do-it))
+(defadvice start-kbd-macro (after vip-kbd-advice activate)
+"Remove Viper's intercepting bindings for C-x ).
+This may be needed if the previous `:map' command terminated abnormally."
+(define-key vip-vi-intercept-map "\C-x)" nil)
+(define-key vip-insert-intercept-map "\C-x)" nil)
+(define-key vip-emacs-intercept-map "\C-x)" nil))
+(cond ((vip-window-display-p)
+	 (let* ((search-key (if vip-xemacs-p
+				[(meta shift button1up)] [M-S-mouse-1]))
+		(search-key-catch
+		 (if vip-xemacs-p [(meta shift button1)] [M-S-down-mouse-1]))
+		(insert-key (if vip-xemacs-p
+				[(meta shift button2up)] [M-S-mouse-2]))
+		(insert-key-catch
+		 (if vip-xemacs-p [(meta shift button2)] [M-S-down-mouse-2]))
+		(search-key-unbound (and (not (key-binding search-key))
+					 (not (key-binding search-key-catch))))
+		(insert-key-unbound (and (not (key-binding insert-key))
+					 (not (key-binding insert-key-catch))))
+		)
+	   (if search-key-unbound
+	       (global-set-key search-key 'vip-mouse-click-search-word))
+	   (if insert-key-unbound
+	       (global-set-key insert-key 'vip-mouse-click-insert-word))
+	   ;; The following would be needed if you want to use the above two
+	   ;; while clicking in another frame. If you only want to use them
+	   ;; by clicking in another window, not frame, the bindings below
+	   ;; aren't necessary.
+	   ;; These must be bound to mouse-down event for the same mouse
+	   ;; buttons as 'vip-mouse-click-search-word and
+	   ;; 'vip-mouse-click-insert-word
+	   (if search-key-unbound
+	       (global-set-key search-key-catch 'vip-mouse-catch-frame-switch))
+	   (if insert-key-unbound
+	       (global-set-key insert-key-catch 'vip-mouse-catch-frame-switch))
+	   (if vip-xemacs-p
+	       (add-hook 'mouse-leave-frame-hook
+			 'vip-remember-current-frame)
+	     (defadvice handle-switch-frame (before vip-frame-advice activate)
+	       "Remember the selected frame before the switch-frame event."
+	       (vip-remember-current-frame (selected-frame))))
+	   )))
+) ; end vip-non-hook-settings
+(if (eq viper-mode 'ask)
+(progn
+(save-window-excursion
+	(with-output-to-temp-buffer " *vip-info*"
+	  (princ "
+You have loaded Viper, and are about to Viperize your emacs!
+Viper is a Package for Emacs Rebels
+and a venomous VI PERil,
+It's time to decide: to Viperize or not to Viperize...
+If you wish to Viperize AND make this your way of life, please put
+	(setq viper-mode t)
+	(require 'viper)
+in your .emacs file (preferably, close to the top).
+These two lines must come in the order given.
+Also, the startup file name has changed from .vip to .viper"))
+	(if (y-or-n-p "Viperize? ")
+	    (setq viper-mode t)
+	  (setq viper-mode nil))
+	(message "")
+	(kill-buffer " *vip-info*"))))
+;; Set some useful macros, advices
+;; These must be BEFORE we ~/.vip is loaded,
+;; so the user can unrecord them in ~/.vip.
+(if viper-mode
+(progn
+;; set advices and some variables that give emacs Vi look.
+(vip-non-hook-settings)
+;; repeat the 2nd previous command without rotating the command history
+(vip-record-kbd-macro
+(vector vip-repeat-from-history-key '\1) 'vi-state
+[(meta x) v i p - r e p e a t - f r o m - h i s t o r y return] 't)
+;; repeat the 3d previous command without rotating the command history
+(vip-record-kbd-macro
+(vector vip-repeat-from-history-key '\2) 'vi-state
+[(meta x) v i p - r e p e a t - f r o m - h i s t o r y return] 't)
+;; set the toggle case sensitivity and regexp search macros
+(vip-set-vi-search-style-macros nil)
+;; Make %%% toggle parsing comments for matching parentheses
+(vip-record-kbd-macro
+"%%%" 'vi-state
+[(meta x) v i p - t o g g l e - p a r s e - s e x p - i g n o r e - c o m m e n t s return]
+'t)
+))
 ;; ~/.vip is loaded if it exists
 (if (and (file-exists-p vip-custom-file-name)
+	 viper-mode
 	 (not noninteractive))
 (load vip-custom-file-name))
 ;; VIP compatibility: merge whatever the user has in vip-mode-map into
 ;; Viper's basic map.
 ;; Applying Viper customization -- runs after (load .vip)
 ;; Save user settings or Viper defaults for vars controled by vip-expert-level
 (setq vip-saved-user-settings
 (list (cons 'vip-want-ctl-h-help vip-want-ctl-h-help)
-	    (cons 'vip-always vip-always)
+	    (cons 'viper-always viper-always)
 	    (cons 'vip-no-multiple-ESC vip-no-multiple-ESC)
 	    (cons 'vip-ex-style-motion vip-ex-style-motion)
 	    (cons 'vip-ex-style-editing-in-insert
 		    	    	    	    vip-ex-style-editing-in-insert)
 	    (cons 'vip-want-emacs-keys-in-vi vip-want-emacs-keys-in-vi)
+	    (cons 'vip-electric-mode vip-electric-mode)
 	    (cons 'vip-want-emacs-keys-in-insert vip-want-emacs-keys-in-insert)
 	    (cons 'vip-re-search vip-re-search)))
-(vip-set-minibuffer-style)
+(if viper-mode
-(if vip-buffer-search-char
+(progn
-(vip-buffer-search-enable))
+(vip-set-minibuffer-style)
-(vip-update-alphanumeric-class)
+(if vip-buffer-search-char
+	  (vip-buffer-search-enable))
+(vip-update-alphanumeric-class)
+))
 ;;; Familiarize Viper with some minor modes that have their own keymaps
-(vip-harness-minor-mode "compile")
+(if viper-mode
-(vip-harness-minor-mode "outline")
+(progn
-(vip-harness-minor-mode "allout")
+(vip-harness-minor-mode "compile")
-(vip-harness-minor-mode "xref")
+(vip-harness-minor-mode "outline")
-(vip-harness-minor-mode "lmenu")
+(vip-harness-minor-mode "allout")
-(vip-harness-minor-mode "vc")
+(vip-harness-minor-mode "xref")
-(vip-harness-minor-mode "ltx-math") ; LaTeX-math-mode in AUC-TeX
+(vip-harness-minor-mode "lmenu")
-(vip-harness-minor-mode "latex")    ; which is in one of these two files
+(vip-harness-minor-mode "vc")
-(vip-harness-minor-mode "cyrillic")
+(vip-harness-minor-mode "ltx-math") ; LaTeX-math-mode in AUC-TeX
-(vip-harness-minor-mode "russian")
+(vip-harness-minor-mode "latex")    ; which is in one of these two files
-(vip-harness-minor-mode "view-less")
+(vip-harness-minor-mode "cyrillic")
-(vip-harness-minor-mode "view")
+(vip-harness-minor-mode "russian")
+(vip-harness-minor-mode "view-less")
+(vip-harness-minor-mode "view")
+))
 ;; Intercept maps could go in viper-keym.el
 ;; We keep them here in case someone redefines them in ~/.vip
 ;; iconifies Emacs
 (define-key vip-vi-intercept-map vip-toggle-key 'vip-toggle-key-action)
 (define-key vip-emacs-intercept-map vip-toggle-key 'vip-change-state-to-vi)
-(if (or vip-always
+(if (and viper-mode
-	(and (< vip-expert-level 5) (> vip-expert-level 0)))
+	 (or viper-always
+	     (and (< vip-expert-level 5) (> vip-expert-level 0))))
 (vip-set-hooks))
 ;; Let all minor modes take effect after loading
 ;; this may not be enough, so we also set default minor-mode-alist.
 ;; Without setting the default, new buffers that come up in emacs mode have
 (vip-change-state-to-emacs)
 (setq-default minor-mode-map-alist minor-mode-map-alist)
 ))
 (run-hooks 'vip-load-hook) ; the last chance to change something
-(provide 'vip19)
 (provide 'vip)
+(provide 'viper)
 ;;;  viper.el ends here

Mercurial > hg > xemacs-beta

comparison lisp/viper/viper.el @ 163:0132846995bd r20-3b8