--- /dev/null
+;;; viper-cmd.el --- Vi command support for Viper
+;; Copyright (C) 1997 Free Software Foundation, Inc.
+
+
+;; Code
+
+(provide 'viper-cmd)
+
+;; Compiler pacifier
+(defvar vip-minibuffer-current-face)
+(defvar vip-minibuffer-insert-face)
+(defvar vip-minibuffer-vi-face)
+(defvar vip-minibuffer-emacs-face)
+(defvar vip-mode-string )
+(defvar iso-accents-mode)
+(defvar zmacs-region-stays)
+(defvar mark-even-if-inactive)
+
+(eval-when-compile
+ (let ((load-path (cons (expand-file-name ".") load-path)))
+ (or (featurep 'viper-util)
+ (load "viper-util.el" nil nil 'nosuffix))
+ (or (featurep 'viper-keym)
+ (load "viper-keym.el" nil nil 'nosuffix))
+ (or (featurep 'viper-mous)
+ (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-util)
+(require 'viper-keym)
+(require 'viper-mous)
+(require 'viper-macs)
+(require 'viper-ex)
+
+
+\f
+;; Generic predicates
+
+;; These test functions are shamelessly lifted from vip 4.4.2 by Aamod Sane
+
+;; generate test functions
+;; given symbol foo, foo-p is the test function, foos is the set of
+;; Viper command keys
+;; (macroexpand '(vip-test-com-defun foo))
+;; (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)
+
+\f
+;;; 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)))
+
+
+
+
+\f
+;; 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 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
+ (setq vip-inhibit-startup-message t)
+ (delete-other-windows)
+ (switch-to-buffer "Viper Startup Message")
+ (erase-buffer)
+ (insert
+ (substitute-command-keys
+ "Viper Is a Package for Emacs Rebels.
+It is also a VI Plan for Emacs Rescue and a venomous VI PERil.
+
+Technically speaking, Viper is a Vi emulation package for GNU Emacs 19 and
+XEmacs 19. It supports virtually all of Vi and Ex functionality, extending
+and improving upon much of it.
+
+ 1. Viper supports Vi at several levels. Level 1 is the closest to Vi,
+ level 5 provides the most flexibility to depart from many Vi conventions.
+
+ You will be asked to specify your user level in a following screen.
+
+ If you select user level 1 then the keys ^X, ^C, ^Z, and ^G will behave
+ as in VI, to smooth transition to Viper for the beginners. However, to
+ use Emacs productively, you are advised to reach user level 3 or higher.
+
+ If your user level is 2 or higher, ^X and ^C will invoke Emacs
+ functions,as usual in Emacs; ^Z will toggle vi/emacs modes, and
+ ^G will be the usual Emacs's keyboard-quit (something like ^C in VI).
+
+ 2. Vi exit functions (e.g., :wq, ZZ) work on INDIVIDUAL files -- they
+ do not cause Emacs to quit, except at user level 1 (a novice).
+ 3. ^X^C EXITS EMACS.
+ 4. Viper supports multiple undo: `u' will undo. Typing `.' will repeat
+ undo. Another `u' changes direction.
+
+ 6. Emacs Meta functions are invoked by typing `C-\\' or `\\ ESC'.
+ On a window system, the best way is to use the Meta-key.
+ 7. Try \\[keyboard-quit] and \\[abort-recursive-edit] repeatedly,if
+ something funny happens. This would abort the current editing command.
+
+You can get more information on Viper by:
+
+ a. Typing `:help' in Vi state
+ b. Printing Viper manual, found in ./etc/viper.dvi
+ c. Printing ViperCard, the Quick Reference, found in ./etc/viperCard.dvi
+
+This startup message appears whenever you load Viper, unless you type `y' now."
+ ))
+ (goto-char (point-min))
+ (if (y-or-n-p "Inhibit Viper startup message? ")
+ (vip-save-setting
+ 'vip-inhibit-startup-message
+ "Viper startup message inhibited"
+ vip-custom-file-name t))
+ ;;(kill-buffer (current-buffer))
+ (message
+ "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)))
+
+\f
+;; 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)))
+
+
+
+\f
+;; 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)))
+
+\f
+;; 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))))
+
+\f
+;; 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))
+
+\f
+;; 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))
+ ))
+
+
+\f
+;;; 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))))
+
+\f
+;;; 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))
+ ))
+
+
+\f
+;; 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)
+ )))
+
+\f
+;; 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))))
+
+\f
+;; 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)))
+
+\f
+;; 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)))
+
+
+\f
+;;; 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))))
+
+
+\f
+;; 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)))
+
+\f
+;;; 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)))))
+
+\f
+;; 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)))
+ ))
+
+\f
+;; 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 ")))
+ )
+
+\f
+;; 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))))
+
+\f
+;; 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))
+
+\f
+;; 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)))
+
+\f
+;; 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))
+
+
+\f
+;; 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))))
+
+
+\f
+;; 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)))))))
+
+\f
+;; 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)))))
+
+\f
+;; 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
+ ))))))
+
+\f
+;; 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)))))
+
+
+\f
+;; 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 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))))
+
+
+\f
+;;; 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))
+
+
+
+;;; viper-cmd.el ends here
;; 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 2, 1997"
"The current version of Viper")
;; This file is part of GNU Emacs.
(require 'cl)
(require 'ring)
-(provide 'viper)
-
-;; 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
- (let ((load-path (cons (expand-file-name ".") load-path)))
- (or (featurep 'viper-util)
- (load "viper-util.el" nil nil 'nosuffix))
- (or (featurep 'viper-keym)
- (load "viper-keym.el" nil nil 'nosuffix))
- (or (featurep 'viper-mous)
- (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-util)
-(require 'viper-keym)
-(require 'viper-mous)
-(require 'viper-macs)
-(require 'viper-ex)
-
-
-\f
-;; Generic predicates
-
-;; These test functions are shamelessly lifted from vip 4.4.2 by Aamod Sane
-
-;; generate test functions
-;; given symbol foo, foo-p is the test function, foos is the set of
-;; Viper command keys
-;; (macroexpand '(vip-test-com-defun foo))
-;; (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)
-
-\f
-;;; 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)))
-
-
-
-
-\f
-;; 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 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
- (setq vip-inhibit-startup-message t)
- (delete-other-windows)
- (switch-to-buffer "Viper Startup Message")
- (erase-buffer)
- (insert
- (substitute-command-keys
- "Viper Is a Package for Emacs Rebels.
-It is also a VI Plan for Emacs Rescue and a venomous VI PERil.
-
-Technically speaking, Viper is a Vi emulation package for GNU Emacs 19 and
-XEmacs 19. It supports virtually all of Vi and Ex functionality, extending
-and improving upon much of it.
-
- 1. Viper supports Vi at several levels. Level 1 is the closest to Vi,
- level 5 provides the most flexibility to depart from many Vi conventions.
-
- You will be asked to specify your user level in a following screen.
-
- If you select user level 1 then the keys ^X, ^C, ^Z, and ^G will behave
- as in VI, to smooth transition to Viper for the beginners. However, to
- use Emacs productively, you are advised to reach user level 3 or higher.
-
- If your user level is 2 or higher, ^X and ^C will invoke Emacs
- functions,as usual in Emacs; ^Z will toggle vi/emacs modes, and
- ^G will be the usual Emacs's keyboard-quit (something like ^C in VI).
-
- 2. Vi exit functions (e.g., :wq, ZZ) work on INDIVIDUAL files -- they
- do not cause Emacs to quit, except at user level 1 (a novice).
- 3. ^X^C EXITS EMACS.
- 4. Viper supports multiple undo: `u' will undo. Typing `.' will repeat
- undo. Another `u' changes direction.
-
- 6. Emacs Meta functions are invoked by typing `C-\\' or `\\ ESC'.
- On a window system, the best way is to use the Meta-key.
- 7. Try \\[keyboard-quit] and \\[abort-recursive-edit] repeatedly,if
- something funny happens. This would abort the current editing command.
-
-You can get more information on Viper by:
-
- a. Typing `:help' in Vi state
- b. Printing Viper manual, found in ./etc/viper.dvi
- c. Printing ViperCard, the Quick Reference, found in ./etc/viperCard.dvi
-
-This startup message appears whenever you load Viper, unless you type `y' now."
- ))
- (goto-char (point-min))
- (if (y-or-n-p "Inhibit Viper startup message? ")
- (vip-save-setting
- 'vip-inhibit-startup-message
- "Viper startup message inhibited"
- vip-custom-file-name t))
- ;;(kill-buffer (current-buffer))
- (message
- "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)))
-
-\f
-;; 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)))
-
-
-
-\f
-;; 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)))
-
-\f
-;; 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))))
-
-\f
-;; 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))
-
-\f
-;; 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))
- ))
-
-
-\f
-;;; 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))))
-
-\f
-;;; 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))
- ))
-
-
-\f
-;; 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)
- )))
-
-\f
-;; 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))))
-
-\f
-;; 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)))
-
-\f
-;; 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)))
-
-
-\f
-;;; 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))))
-
-
-\f
-;; 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)))
-
-\f
-;;; 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)))))
-
-\f
-;; 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)))
- ))
-
-\f
-;; 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 ")))
- )
-
-\f
-;; 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))))
-
-\f
-;; 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))
-
-\f
-;; 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)))
-
-\f
-;; 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))
-
-
-\f
-;; 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))))
-
-
-\f
-;; 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)))))))
-
-\f
-;; 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)))))
-
-\f
-;; 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
- ))))))
-
-\f
-;; 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))
- ))
+(eval-when-compile
+ (let ((load-path (cons (expand-file-name ".") load-path)))
+ (or (featurep 'viper-cmd)
+ (load "viper-cmd.el" nil nil 'nosuffix))
))
-
-;; 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)))))
-
-
-\f
-;; 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 "")
- )))
-
+(require 'viper-cmd)
+;; Viper version
(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))))
-
-
-\f
-;;; 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))
-
-
-\f
;; 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)
+\f
+;; Viper changes the default mode-line-buffer-identification
+(setq-default mode-line-buffer-identification '(" %b"))
+
+;; 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))))
+
\f
-;;; Load .vip and set up hooks
+;;; Load set up hooks then load .vip
;; This hook designed to enable Vi-style editing in comint-based modes."
(defun vip-comint-mode-hook ()
(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)
) ; vip-set-hooks
;; Set some useful macros
-;; These must be before we load .vip, so the user can unrecord them.
+;; These must be before we load .vip, so the user could unrecord them.
;; repeat the 2nd previous command without rotating the command history
(vip-record-kbd-macro
(vip-buffer-search-enable))
(vip-update-alphanumeric-class)
+\f
;;; Familiarize Viper with some minor modes that have their own keymaps
(vip-harness-minor-mode "compile")
(vip-harness-minor-mode "outline")
))
+
(run-hooks 'vip-load-hook) ; the last chance to change something
-(provide 'vip19)
(provide 'vip)
+(provide 'viper)
;;; viper.el ends here
projects / emacs.git / commitdiff