1 ;;; viper-cmd.el --- Vi command support for Viper
3 ;; Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
4 ;; 2005 Free Software Foundation, Inc.
6 ;; Author: Michael Kifer <kifer@cs.stonybrook.edu>
8 ;; This file is part of GNU Emacs.
10 ;; GNU Emacs is free software; you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation; either version 2, or (at your option)
15 ;; GNU Emacs is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs; see the file COPYING. If not, write to the
22 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
23 ;; Boston, MA 02110-1301, USA.
33 (defvar viper-minibuffer-current-face)
34 (defvar viper-minibuffer-insert-face)
35 (defvar viper-minibuffer-vi-face)
36 (defvar viper-minibuffer-emacs-face)
38 (defvar viper-mode-string)
39 (defvar viper-custom-file-name)
40 (defvar viper--key-maps)
41 (defvar viper--intercept-key-maps)
42 (defvar iso-accents-mode)
44 (defvar quail-current-str)
45 (defvar zmacs-region-stays)
46 (defvar mark-even-if-inactive)
50 ;; loading happens only in non-interactive compilation
51 ;; in order to spare non-viperized emacs from being viperized
54 (let ((load-path (cons (expand-file-name ".") load-path)))
55 (or (featurep 'viper-util)
56 (load "viper-util.el" nil nil 'nosuffix))
57 (or (featurep 'viper-keym)
58 (load "viper-keym.el" nil nil 'nosuffix))
59 (or (featurep 'viper-mous)
60 (load "viper-mous.el" nil nil 'nosuffix))
61 (or (featurep 'viper-macs)
62 (load "viper-macs.el" nil nil 'nosuffix))
63 (or (featurep 'viper-ex)
64 (load "viper-ex.el" nil nil 'nosuffix))
79 ;; These test functions are shamelessly lifted from vip 4.4.2 by Aamod Sane
81 ;; generate test functions
82 ;; given symbol foo, foo-p is the test function, foos is the set of
84 ;; (macroexpand '(viper-test-com-defun foo))
85 ;; (defun foo-p (com) (consp (memq com foos)))
87 (defmacro viper-test-com-defun (name)
88 (let* ((snm (symbol-name name))
89 (nm-p (intern (concat snm "-p")))
90 (nms (intern (concat snm "s"))))
92 (consp (viper-memq-char com ,nms)
95 ;; Variables for defining VI commands
97 ;; Modifying commands that can be prefixes to movement commands
98 (defvar viper-prefix-commands '(?c ?d ?y ?! ?= ?# ?< ?> ?\"))
99 ;; define viper-prefix-command-p
100 (viper-test-com-defun viper-prefix-command)
102 ;; Commands that are pairs eg. dd. r and R here are a hack
103 (defconst viper-charpair-commands '(?c ?d ?y ?! ?= ?< ?> ?r ?R))
104 ;; define viper-charpair-command-p
105 (viper-test-com-defun viper-charpair-command)
107 (defconst viper-movement-commands '(?b ?B ?e ?E ?f ?F ?G ?h ?H ?j ?k ?l
108 ?H ?M ?L ?n ?t ?T ?w ?W ?$ ?%
109 ?^ ?( ?) ?- ?+ ?| ?{ ?} ?[ ?] ?' ?`
110 ?\; ?, ?0 ?? ?/ ?\ ?\C-m
115 ;; define viper-movement-command-p
116 (viper-test-com-defun viper-movement-command)
119 (defconst viper-digit-commands '(?1 ?2 ?3 ?4 ?5 ?6 ?7 ?8 ?9))
121 ;; define viper-digit-command-p
122 (viper-test-com-defun viper-digit-command)
124 ;; Commands that can be repeated by . (dotted)
125 (defconst viper-dotable-commands '(?c ?d ?C ?s ?S ?D ?> ?<))
126 ;; define viper-dotable-command-p
127 (viper-test-com-defun viper-dotable-command)
129 ;; Commands that can follow a #
130 (defconst viper-hash-commands '(?c ?C ?g ?q ?s))
131 ;; define viper-hash-command-p
132 (viper-test-com-defun viper-hash-command)
134 ;; Commands that may have registers as prefix
135 (defconst viper-regsuffix-commands '(?d ?y ?Y ?D ?p ?P ?x ?X))
136 ;; define viper-regsuffix-command-p
137 (viper-test-com-defun viper-regsuffix-command)
139 (defconst viper-vi-commands (append viper-movement-commands
141 viper-dotable-commands
142 viper-charpair-commands
144 viper-prefix-commands
145 viper-regsuffix-commands)
146 "The list of all commands in Vi-state.")
147 ;; define viper-vi-command-p
148 (viper-test-com-defun viper-vi-command)
150 ;; Where viper saves mark. This mark is resurrected by m^
151 (defvar viper-saved-mark nil)
153 ;; Contains user settings for vars affected by viper-set-expert-level function.
154 ;; Not a user option.
155 (defvar viper-saved-user-settings nil)
163 ;; Runs viper-after-change-functions inside after-change-functions
164 (defun viper-after-change-sentinel (beg end len)
165 (run-hook-with-args 'viper-after-change-functions beg end len))
167 ;; Runs viper-before-change-functions inside before-change-functions
168 (defun viper-before-change-sentinel (beg end)
169 (run-hook-with-args 'viper-before-change-functions beg end))
171 (defsubst viper-post-command-sentinel ()
172 (run-hooks 'viper-post-command-hooks)
173 (if (eq viper-current-state 'vi-state)
174 (viper-restore-cursor-color 'after-insert-mode)))
176 (defsubst viper-pre-command-sentinel ()
177 (run-hooks 'viper-pre-command-hooks))
179 ;; Needed so that Viper will be able to figure the last inserted
180 ;; chunk of text with reasonable accuracy.
181 (defsubst viper-insert-state-post-command-sentinel ()
182 (if (and (memq viper-current-state '(insert-state replace-state))
184 (>= (point) viper-insert-point))
185 (setq viper-last-posn-while-in-insert-state (point-marker)))
186 (or (viper-overlay-p viper-replace-overlay)
188 (viper-set-replace-overlay (point-min) (point-min))
189 (viper-hide-replace-overlay)))
190 (if (eq viper-current-state 'insert-state)
191 (let ((has-saved-cursor-color-in-insert-mode
192 (stringp (viper-get-saved-cursor-color-in-insert-mode))))
193 (or has-saved-cursor-color-in-insert-mode
194 (string= (viper-get-cursor-color) viper-insert-state-cursor-color)
195 ;; save current color, if not already saved
196 (viper-save-cursor-color 'before-insert-mode))
197 ;; set insert mode cursor color
198 (viper-change-cursor-color viper-insert-state-cursor-color)))
200 (if (and (memq this-command '(dabbrev-expand hippie-expand))
201 (integerp viper-pre-command-point)
202 (markerp viper-insert-point)
203 (marker-position viper-insert-point)
204 (> viper-insert-point viper-pre-command-point))
205 (viper-move-marker-locally viper-insert-point viper-pre-command-point))
208 (defsubst viper-preserve-cursor-color ()
209 (or (memq this-command '(self-insert-command
210 viper-del-backward-char-in-insert
211 viper-del-backward-char-in-replace
212 viper-delete-backward-char
215 (memq (viper-event-key last-command-event)
216 '(up down left right (meta f) (meta b)
217 (control n) (control p) (control f) (control b)))))
219 (defsubst viper-insert-state-pre-command-sentinel ()
220 (or (viper-preserve-cursor-color)
221 (viper-restore-cursor-color 'after-insert-mode))
222 (if (and (memq this-command '(dabbrev-expand hippie-expand))
223 (markerp viper-insert-point)
224 (marker-position viper-insert-point))
225 (setq viper-pre-command-point (marker-position viper-insert-point))))
227 (defsubst viper-R-state-post-command-sentinel ()
228 ;; Restoring cursor color is needed despite
229 ;; viper-replace-state-pre-command-sentinel: When you jump to another buffer
230 ;; in another frame, the pre-command hook won't change cursor color to
231 ;; default in that other frame. So, if the second frame cursor was red and
232 ;; we set the point outside the replacement region, then the cursor color
233 ;; will remain red. Restoring the default, below, prevents this.
234 (if (and (<= (viper-replace-start) (point))
235 (<= (point) (viper-replace-end)))
236 (viper-change-cursor-color viper-replace-overlay-cursor-color)
237 (viper-restore-cursor-color 'after-replace-mode)
240 ;; to speed up, don't change cursor color before self-insert
241 ;; and common move commands
242 (defsubst viper-replace-state-pre-command-sentinel ()
243 (or (viper-preserve-cursor-color)
244 (viper-restore-cursor-color 'after-replace-mode)))
247 ;; Make sure we don't delete more than needed.
248 ;; This is executed at viper-last-posn-in-replace-region
249 (defsubst viper-trim-replace-chars-to-delete-if-necessary ()
250 (setq viper-replace-chars-to-delete
252 (min viper-replace-chars-to-delete
253 ;; Don't delete more than to the end of repl overlay
254 (viper-chars-in-region
255 (viper-replace-end) viper-last-posn-in-replace-region)
256 ;; point is viper-last-posn-in-replace-region now
257 ;; So, this limits deletion to the end of line
258 (viper-chars-in-region (point) (viper-line-pos 'end))
262 (defun viper-replace-state-post-command-sentinel ()
263 ;; Restoring cursor color is needed despite
264 ;; viper-replace-state-pre-command-sentinel: When one jumps to another buffer
265 ;; in another frame, the pre-command hook won't change cursor color to
266 ;; default in that other frame. So, if the second frame cursor was red and
267 ;; we set the point outside the replacement region, then the cursor color
268 ;; will remain red. Restoring the default, below, fixes this problem.
270 ;; We optimize for some commands, like self-insert-command,
271 ;; viper-delete-backward-char, etc., since they either don't change
272 ;; cursor color or, if they terminate replace mode, the color will be changed
273 ;; in viper-finish-change
274 (or (viper-preserve-cursor-color)
275 (viper-restore-cursor-color 'after-replace-mode))
277 ((eq viper-current-state 'replace-state)
278 ;; delete characters to compensate for inserted chars.
279 (let ((replace-boundary (viper-replace-end)))
281 (goto-char viper-last-posn-in-replace-region)
282 (viper-trim-replace-chars-to-delete-if-necessary)
283 (delete-char viper-replace-chars-to-delete)
284 (setq viper-replace-chars-to-delete 0)
285 ;; terminate replace mode if reached replace limit
286 (if (= viper-last-posn-in-replace-region (viper-replace-end))
287 (viper-finish-change)))
289 (if (viper-pos-within-region
290 (point) (viper-replace-start) replace-boundary)
292 ;; the state may have changed in viper-finish-change above
293 (if (eq viper-current-state 'replace-state)
294 (viper-change-cursor-color viper-replace-overlay-cursor-color))
295 (setq viper-last-posn-in-replace-region (point-marker))))
297 ;; terminate replace mode if changed Viper states.
298 (t (viper-finish-change))))
303 ;; Change state to NEW-STATE---either emacs-state, vi-state, or insert-state.
304 (defun viper-change-state (new-state)
305 ;; Keep viper-post/pre-command-hooks fresh.
306 ;; We remove then add viper-post/pre-command-sentinel since it is very
307 ;; desirable that viper-pre-command-sentinel is the last hook and
308 ;; viper-post-command-sentinel is the first hook.
310 (viper-cond-compile-for-xemacs-or-emacs
313 (make-local-hook 'viper-after-change-functions)
314 (make-local-hook 'viper-before-change-functions)
315 (make-local-hook 'viper-post-command-hooks)
316 (make-local-hook 'viper-pre-command-hooks))
320 (remove-hook 'post-command-hook 'viper-post-command-sentinel)
321 (add-hook 'post-command-hook 'viper-post-command-sentinel)
322 (remove-hook 'pre-command-hook 'viper-pre-command-sentinel)
323 (add-hook 'pre-command-hook 'viper-pre-command-sentinel t)
324 ;; These hooks will be added back if switching to insert/replace mode
325 (remove-hook 'viper-post-command-hooks
326 'viper-insert-state-post-command-sentinel 'local)
327 (remove-hook 'viper-pre-command-hooks
328 'viper-insert-state-pre-command-sentinel 'local)
329 (setq viper-intermediate-command nil)
330 (cond ((eq new-state 'vi-state)
331 (cond ((member viper-current-state '(insert-state replace-state))
333 ;; move viper-last-posn-while-in-insert-state
334 ;; This is a normal hook that is executed in insert/replace
335 ;; states after each command. In Vi/Emacs state, it does
336 ;; nothing. We need to execute it here to make sure that
337 ;; the last posn was recorded when we hit ESC.
338 ;; It may be left unrecorded if the last thing done in
339 ;; insert/repl state was dabbrev-expansion or abbrev
340 ;; expansion caused by hitting ESC
341 (viper-insert-state-post-command-sentinel)
343 (condition-case conds
345 (viper-save-last-insertion
347 viper-last-posn-while-in-insert-state)
348 (if viper-began-as-replace
349 (setq viper-began-as-replace nil)
350 ;; repeat insert commands if numerical arg > 1
352 (viper-repeat-insert-command))))
354 (viper-message-conditions conds)))
356 (if (> (length viper-last-insertion) 0)
357 (viper-push-onto-ring viper-last-insertion
358 'viper-insertion-ring))
360 (if viper-ESC-moves-cursor-back
361 (or (bolp) (backward-char 1))))
365 ((memq new-state '(insert-state replace-state))
366 (if (memq viper-current-state '(emacs-state vi-state))
367 (viper-move-marker-locally 'viper-insert-point (point)))
368 (viper-move-marker-locally
369 'viper-last-posn-while-in-insert-state (point))
370 (add-hook 'viper-post-command-hooks
371 'viper-insert-state-post-command-sentinel t 'local)
372 (add-hook 'viper-pre-command-hooks
373 'viper-insert-state-pre-command-sentinel t 'local))
376 ;; Nothing needs to be done to switch to emacs mode! Just set some
377 ;; variables, which is already done in viper-change-state-to-emacs!
380 ;; always turn off iso-accents-mode in vi-state, or else we won't be able to
381 ;; use the keys `,',^ , as they will do accents instead of Vi actions.
382 (cond ((eq new-state 'vi-state) (viper-set-iso-accents-mode nil));accents off
383 (viper-automatic-iso-accents (viper-set-iso-accents-mode t));accents on
384 (t (viper-set-iso-accents-mode nil)))
385 ;; Always turn off quail mode in vi state
386 (cond ((eq new-state 'vi-state) (viper-set-input-method nil)) ;intl input off
387 (viper-special-input-method (viper-set-input-method t)) ;intl input on
388 (t (viper-set-input-method nil)))
390 (setq viper-current-state new-state)
392 (viper-update-syntax-classes)
393 (viper-normalize-minor-mode-map-alist)
394 (viper-adjust-keys-for new-state)
395 (viper-set-mode-vars-for new-state)
396 (viper-refresh-mode-line)
401 (defun viper-adjust-keys-for (state)
402 "Make necessary adjustments to keymaps before entering STATE."
403 (cond ((memq state '(insert-state replace-state))
404 (if viper-auto-indent
406 (define-key viper-insert-basic-map "\C-m" 'viper-autoindent)
407 (if viper-want-emacs-keys-in-insert
409 (define-key viper-insert-basic-map "\C-j" nil)
411 (define-key viper-insert-basic-map "\C-j" 'viper-autoindent)))
412 (define-key viper-insert-basic-map "\C-m" nil)
413 (define-key viper-insert-basic-map "\C-j" nil))
415 (setq viper-insert-diehard-minor-mode
416 (not viper-want-emacs-keys-in-insert))
418 (if viper-want-ctl-h-help
420 (define-key viper-insert-basic-map "\C-h" 'help-command)
421 (define-key viper-replace-map "\C-h" 'help-command))
422 (define-key viper-insert-basic-map
423 "\C-h" 'viper-del-backward-char-in-insert)
424 (define-key viper-replace-map
425 "\C-h" 'viper-del-backward-char-in-replace))
426 ;; In XEmacs, C-h overrides backspace, so we make sure it doesn't.
427 (define-key viper-insert-basic-map
428 [backspace] 'viper-del-backward-char-in-insert)
429 (define-key viper-replace-map
430 [backspace] 'viper-del-backward-char-in-replace)
431 ) ; end insert/replace case
433 (setq viper-vi-diehard-minor-mode (not viper-want-emacs-keys-in-vi))
434 (if viper-want-ctl-h-help
435 (define-key viper-vi-basic-map "\C-h" 'help-command)
436 (define-key viper-vi-basic-map "\C-h" 'viper-backward-char))
437 ;; In XEmacs, C-h overrides backspace, so we make sure it doesn't.
438 (define-key viper-vi-basic-map [backspace] 'viper-backward-char))
442 ;; Normalizes minor-mode-map-alist by putting Viper keymaps first.
443 ;; This ensures that Viper bindings are in effect, regardless of which minor
444 ;; modes were turned on by the user or by other packages.
445 (defun viper-normalize-minor-mode-map-alist ()
446 (setq viper--intercept-key-maps
448 (cons 'viper-vi-intercept-minor-mode viper-vi-intercept-map)
449 (cons 'viper-insert-intercept-minor-mode viper-insert-intercept-map)
450 (cons 'viper-emacs-intercept-minor-mode viper-emacs-intercept-map)
452 (setq viper--key-maps
453 (list (cons 'viper-vi-minibuffer-minor-mode viper-minibuffer-map)
454 (cons 'viper-vi-local-user-minor-mode viper-vi-local-user-map)
455 (cons 'viper-vi-kbd-minor-mode viper-vi-kbd-map)
456 (cons 'viper-vi-global-user-minor-mode viper-vi-global-user-map)
457 (cons 'viper-vi-state-modifier-minor-mode
459 (cdr (assoc major-mode viper-vi-state-modifier-alist)))
460 (cdr (assoc major-mode viper-vi-state-modifier-alist))
462 (cons 'viper-vi-diehard-minor-mode viper-vi-diehard-map)
463 (cons 'viper-vi-basic-minor-mode viper-vi-basic-map)
464 (cons 'viper-replace-minor-mode viper-replace-map)
465 ;; viper-insert-minibuffer-minor-mode must come after
466 ;; viper-replace-minor-mode
467 (cons 'viper-insert-minibuffer-minor-mode
468 viper-minibuffer-map)
469 (cons 'viper-insert-local-user-minor-mode
470 viper-insert-local-user-map)
471 (cons 'viper-insert-kbd-minor-mode viper-insert-kbd-map)
472 (cons 'viper-insert-global-user-minor-mode
473 viper-insert-global-user-map)
474 (cons 'viper-insert-state-modifier-minor-mode
476 (cdr (assoc major-mode
477 viper-insert-state-modifier-alist)))
478 (cdr (assoc major-mode
479 viper-insert-state-modifier-alist))
481 (cons 'viper-insert-diehard-minor-mode viper-insert-diehard-map)
482 (cons 'viper-insert-basic-minor-mode viper-insert-basic-map)
483 (cons 'viper-emacs-local-user-minor-mode
484 viper-emacs-local-user-map)
485 (cons 'viper-emacs-kbd-minor-mode viper-emacs-kbd-map)
486 (cons 'viper-emacs-global-user-minor-mode
487 viper-emacs-global-user-map)
488 (cons 'viper-emacs-state-modifier-minor-mode
491 (assoc major-mode viper-emacs-state-modifier-alist)))
493 (assoc major-mode viper-emacs-state-modifier-alist))
497 ;; in emacs with emulation-mode-map-alists, nothing needs to be done
499 (and (fboundp 'add-to-ordered-list) (boundp 'emulation-mode-map-alists))
500 (setq minor-mode-map-alist
501 (viper-append-filter-alist
502 (append viper--intercept-key-maps viper--key-maps)
503 minor-mode-map-alist)))
508 ;; Viper mode-changing commands and utilities
510 ;; Modifies mode-line-buffer-identification.
511 (defun viper-refresh-mode-line ()
512 (setq viper-mode-string
513 (cond ((eq viper-current-state 'emacs-state) viper-emacs-state-id)
514 ((eq viper-current-state 'vi-state) viper-vi-state-id)
515 ((eq viper-current-state 'replace-state) viper-replace-state-id)
516 ((eq viper-current-state 'insert-state) viper-insert-state-id)))
518 ;; Sets Viper mode string in global-mode-string
519 (force-mode-line-update))
522 ;; Switch from Insert state to Vi state.
523 (defun viper-exit-insert-state ()
525 (viper-change-state-to-vi))
527 (defun viper-set-mode-vars-for (state)
528 "Sets Viper minor mode variables to put Viper's state STATE in effect."
531 (setq viper-vi-minibuffer-minor-mode nil
532 viper-insert-minibuffer-minor-mode nil
533 viper-vi-intercept-minor-mode nil
534 viper-insert-intercept-minor-mode nil
536 viper-vi-local-user-minor-mode nil
537 viper-vi-kbd-minor-mode nil
538 viper-vi-global-user-minor-mode nil
539 viper-vi-state-modifier-minor-mode nil
540 viper-vi-diehard-minor-mode nil
541 viper-vi-basic-minor-mode nil
543 viper-replace-minor-mode nil
545 viper-insert-local-user-minor-mode nil
546 viper-insert-kbd-minor-mode nil
547 viper-insert-global-user-minor-mode nil
548 viper-insert-state-modifier-minor-mode nil
549 viper-insert-diehard-minor-mode nil
550 viper-insert-basic-minor-mode nil
551 viper-emacs-intercept-minor-mode t
552 viper-emacs-local-user-minor-mode t
553 viper-emacs-kbd-minor-mode (not (viper-is-in-minibuffer))
554 viper-emacs-global-user-minor-mode t
555 viper-emacs-state-modifier-minor-mode t
559 (if (eq state 'vi-state) ; adjust for vi-state
561 viper-vi-intercept-minor-mode t
562 viper-vi-minibuffer-minor-mode (viper-is-in-minibuffer)
563 viper-vi-local-user-minor-mode t
564 viper-vi-kbd-minor-mode (not (viper-is-in-minibuffer))
565 viper-vi-global-user-minor-mode t
566 viper-vi-state-modifier-minor-mode t
567 ;; don't let the diehard keymap block command completion
568 ;; and other things in the minibuffer
569 viper-vi-diehard-minor-mode (not
570 (or viper-want-emacs-keys-in-vi
571 (viper-is-in-minibuffer)))
572 viper-vi-basic-minor-mode t
573 viper-emacs-intercept-minor-mode nil
574 viper-emacs-local-user-minor-mode nil
575 viper-emacs-kbd-minor-mode nil
576 viper-emacs-global-user-minor-mode nil
577 viper-emacs-state-modifier-minor-mode nil
580 ;; Insert and Replace states
581 (if (member state '(insert-state replace-state))
583 viper-insert-intercept-minor-mode t
584 viper-replace-minor-mode (eq state 'replace-state)
585 viper-insert-minibuffer-minor-mode (viper-is-in-minibuffer)
586 viper-insert-local-user-minor-mode t
587 viper-insert-kbd-minor-mode (not (viper-is-in-minibuffer))
588 viper-insert-global-user-minor-mode t
589 viper-insert-state-modifier-minor-mode t
590 ;; don't let the diehard keymap block command completion
591 ;; and other things in the minibuffer
592 viper-insert-diehard-minor-mode (not
594 viper-want-emacs-keys-in-insert
595 (viper-is-in-minibuffer)))
596 viper-insert-basic-minor-mode t
597 viper-emacs-intercept-minor-mode nil
598 viper-emacs-local-user-minor-mode nil
599 viper-emacs-kbd-minor-mode nil
600 viper-emacs-global-user-minor-mode nil
601 viper-emacs-state-modifier-minor-mode nil
605 (if (viper-has-face-support-p)
606 (setq viper-minibuffer-current-face
607 (cond ((eq state 'emacs-state) viper-minibuffer-emacs-face)
608 ((eq state 'vi-state) viper-minibuffer-vi-face)
609 ((memq state '(insert-state replace-state))
610 viper-minibuffer-insert-face))))
612 (if (viper-is-in-minibuffer)
613 (viper-set-minibuffer-overlay))
616 ;; This also takes care of the annoying incomplete lines in files.
617 ;; Also, this fixes `undo' to work vi-style for complex commands.
618 (defun viper-change-state-to-vi ()
619 "Change Viper state to Vi."
621 (if (and viper-first-time (not (viper-is-in-minibuffer)))
623 (if overwrite-mode (overwrite-mode -1))
624 (or (viper-overlay-p viper-replace-overlay)
625 (viper-set-replace-overlay (point-min) (point-min)))
626 (viper-hide-replace-overlay)
627 (if abbrev-mode (expand-abbrev))
628 (if (and auto-fill-function (> (current-column) fill-column))
629 (funcall auto-fill-function))
630 ;; don't leave whitespace lines around
631 (if (and (memq last-command
633 viper-open-line viper-Open-line
634 viper-replace-state-exit-cmd))
635 (viper-over-whitespace-line))
636 (indent-to-left-margin))
637 (viper-add-newline-at-eob-if-necessary)
639 (viper-change-state 'vi-state)
641 (viper-restore-cursor-color 'after-insert-mode)
643 ;; Protect against user errors in hooks
644 (condition-case conds
645 (run-hooks 'viper-vi-state-hook)
647 (viper-message-conditions conds)))))
649 (defun viper-change-state-to-insert ()
650 "Change Viper state to Insert."
652 (viper-change-state 'insert-state)
654 (or (viper-overlay-p viper-replace-overlay)
655 (viper-set-replace-overlay (point-min) (point-min)))
656 (viper-hide-replace-overlay)
658 (let ((has-saved-cursor-color-in-insert-mode
659 (stringp (viper-get-saved-cursor-color-in-insert-mode))))
660 (or has-saved-cursor-color-in-insert-mode
661 (string= (viper-get-cursor-color) viper-insert-state-cursor-color)
662 (viper-save-cursor-color 'before-insert-mode))
663 (viper-change-cursor-color viper-insert-state-cursor-color))
665 ;; Protect against user errors in hooks
666 (condition-case conds
667 (run-hooks 'viper-insert-state-hook)
669 (viper-message-conditions conds))))
671 (defsubst viper-downgrade-to-insert ()
672 ;; Protect against user errors in hooks
673 (condition-case conds
674 (run-hooks 'viper-insert-state-hook)
676 (viper-message-conditions conds)))
677 (setq viper-current-state 'insert-state
678 viper-replace-minor-mode nil))
682 ;; Change to replace state. When the end of replacement region is reached,
683 ;; replace state changes to insert state.
684 (defun viper-change-state-to-replace (&optional non-R-cmd)
685 (viper-change-state 'replace-state)
686 ;; Run insert-state-hook
687 (condition-case conds
688 (run-hooks 'viper-insert-state-hook 'viper-replace-state-hook)
690 (viper-message-conditions conds)))
693 (viper-start-replace)
694 ;; 'R' is implemented using Emacs's overwrite-mode
695 (viper-start-R-mode))
699 (defun viper-change-state-to-emacs ()
700 "Change Viper state to Emacs."
702 (or (viper-overlay-p viper-replace-overlay)
703 (viper-set-replace-overlay (point-min) (point-min)))
704 (viper-hide-replace-overlay)
705 (viper-change-state 'emacs-state)
707 ;; Protect agains user errors in hooks
708 (condition-case conds
709 (run-hooks 'viper-emacs-state-hook)
711 (viper-message-conditions conds))))
713 ;; escape to emacs mode termporarily
714 (defun viper-escape-to-emacs (arg &optional events)
715 "Escape to Emacs state from Vi state for one Emacs command.
716 ARG is used as the prefix value for the executed command. If
717 EVENTS is a list of events, which become the beginning of the command."
719 (if (viper= last-command-char ?\\)
720 (message "Switched to EMACS state for the next command..."))
721 (viper-escape-to-state arg events 'emacs-state))
723 ;; escape to Vi mode termporarily
724 (defun viper-escape-to-vi (arg)
725 "Escape from Emacs state to Vi state for one Vi 1-character command.
726 If the Vi command that the user types has a prefix argument, e.g., `d2w', then
727 Vi's prefix argument will be used. Otherwise, the prefix argument passed to
728 `viper-escape-to-vi' is used."
730 (message "Switched to VI state for the next command...")
731 (viper-escape-to-state arg nil 'vi-state))
733 ;; Escape to STATE mode for one Emacs command.
734 (defun viper-escape-to-state (arg events state)
735 ;;(let (com key prefix-arg)
737 ;; this temporarily turns off Viper's minor mode keymaps
738 (viper-set-mode-vars-for state)
739 (viper-normalize-minor-mode-map-alist)
740 (if events (viper-set-unread-command-events events))
742 ;; protect against keyboard quit and other errors
744 (let (viper-vi-kbd-minor-mode
745 viper-insert-kbd-minor-mode
746 viper-emacs-kbd-minor-mode)
750 (key-binding (setq key (viper-read-key-sequence nil))))
751 ;; In case of binding indirection--chase definitions.
752 ;; Have to do it here because we execute this command under
753 ;; different keymaps, so command-execute may not do the
755 (while (vectorp com) (setq com (key-binding com))))
757 ;; Execute command com in the original Viper state, not in state
758 ;; `state'. Otherwise, if we switch buffers while executing the
759 ;; escaped to command, Viper's mode vars will remain those of
760 ;; `state'. When we return to the orig buffer, the bindings will be
762 (viper-set-mode-vars-for viper-current-state)
764 ;; this-command, last-command-char, last-command-event
765 (setq this-command com)
766 (viper-cond-compile-for-xemacs-or-emacs
767 ;; XEmacs represents key sequences as vectors
768 (setq last-command-event
769 (viper-copy-event (viper-seq-last-elt key))
770 last-command-char (event-to-character last-command-event))
771 ;; Emacs represents them as sequences (str or vec)
772 (setq last-command-event
773 (viper-copy-event (viper-seq-last-elt key))
774 last-command-char last-command-event)
778 ;; pretend that current state is the state we excaped to
779 (let ((viper-current-state state))
780 (setq prefix-arg (or prefix-arg arg))
781 (command-execute com)))
785 ;; set state in the new buffer
786 (viper-set-mode-vars-for viper-current-state))
788 ;; This is used in order to allow reading characters according to the input
789 ;; method. The character is read in emacs and inserted into the buffer.
790 ;; If an input method is in effect, this might
791 ;; cause several characters to be combined into one.
792 ;; Also takes care of the iso-accents mode
793 (defun viper-special-read-and-insert-char ()
794 (viper-set-mode-vars-for 'emacs-state)
795 (viper-normalize-minor-mode-map-alist)
796 (if viper-special-input-method
797 (viper-set-input-method t))
798 (if viper-automatic-iso-accents
799 (viper-set-iso-accents-mode t))
801 (let (viper-vi-kbd-minor-mode
802 viper-insert-kbd-minor-mode
803 viper-emacs-kbd-minor-mode
805 (cond ((and viper-special-input-method
807 (fboundp 'quail-input-method))
808 ;; (let ...) is used to restore unread-command-events to the
809 ;; original state. We don't want anything left in there after
810 ;; key translation. (Such left-overs are possible if the user
811 ;; types a regular key.)
812 (let (unread-command-events)
813 ;; The next cmd and viper-set-unread-command-events
814 ;; are intended to prevent the input method
815 ;; from swallowing ^M, ^Q and other special characters
816 (setq ch (read-char))
817 ;; replace ^M with the newline
818 (if (eq ch ?\C-m) (setq ch ?\n))
819 ;; Make sure ^V and ^Q work as quotation chars
820 (if (memq ch '(?\C-v ?\C-q))
821 (setq ch (read-char)))
822 (viper-set-unread-command-events ch)
823 (quail-input-method nil)
825 (if (and ch (string= quail-current-str ""))
827 (insert quail-current-str))
829 (aref quail-current-str
830 (1- (length quail-current-str)))))
832 ((and viper-special-input-method
834 (fboundp 'quail-start-translation))
835 ;; same as above but for XEmacs, which doesn't have
836 ;; quail-input-method
837 (let (unread-command-events)
838 (setq ch (read-char))
839 ;; replace ^M with the newline
840 (if (eq ch ?\C-m) (setq ch ?\n))
841 ;; Make sure ^V and ^Q work as quotation chars
842 (if (memq ch '(?\C-v ?\C-q))
843 (setq ch (read-char)))
844 (viper-set-unread-command-events ch)
845 (quail-start-translation nil)
847 (if (and ch (string= quail-current-str ""))
849 (insert quail-current-str))
851 (aref quail-current-str
852 (1- (length quail-current-str)))))
854 ((and (boundp 'iso-accents-mode) iso-accents-mode)
855 (setq ch (aref (read-key-sequence nil) 0))
856 ;; replace ^M with the newline
857 (if (eq ch ?\C-m) (setq ch ?\n))
858 ;; Make sure ^V and ^Q work as quotation chars
859 (if (memq ch '(?\C-v ?\C-q))
860 (setq ch (aref (read-key-sequence nil) 0)))
863 (setq ch (read-char))
864 ;; replace ^M with the newline
865 (if (eq ch ?\C-m) (setq ch ?\n))
866 ;; Make sure ^V and ^Q work as quotation chars
867 (if (memq ch '(?\C-v ?\C-q))
868 (setq ch (read-char)))
871 (setq last-command-event
872 (viper-copy-event (if viper-xemacs-p
873 (character-to-event ch) ch)))
878 (viper-set-input-method nil)
879 (viper-set-iso-accents-mode nil)
880 (viper-set-mode-vars-for viper-current-state)
884 (defun viper-exec-form-in-vi (form)
885 "Execute FORM in Vi state, regardless of the Ccurrent Vi state."
886 (let ((buff (current-buffer))
888 (viper-set-mode-vars-for 'vi-state)
891 (let (viper-vi-kbd-minor-mode) ; execute without kbd macros
892 (setq result (eval form))
897 (if (not (equal buff (current-buffer))) ; cmd switched buffer
900 (viper-set-mode-vars-for viper-current-state)))
901 (viper-set-mode-vars-for viper-current-state)
904 (defun viper-exec-form-in-emacs (form)
905 "Execute FORM in Emacs, temporarily disabling Viper's minor modes.
906 Similar to viper-escape-to-emacs, but accepts forms rather than keystrokes."
907 (let ((buff (current-buffer))
909 (viper-set-mode-vars-for 'emacs-state)
910 (setq result (eval form))
911 (if (not (equal buff (current-buffer))) ; cmd switched buffer
914 (viper-set-mode-vars-for viper-current-state)))
915 (viper-set-mode-vars-for viper-current-state)
918 ;; This executes the last kbd event in emacs mode. Is used when we want to
919 ;; interpret certain keys directly in emacs (as, for example, in comint mode).
920 (defun viper-exec-key-in-emacs (arg)
922 (viper-escape-to-emacs arg last-command-event))
925 ;; This is needed because minor modes sometimes override essential Viper
926 ;; bindings. By letting Viper know which files these modes are in, it will
927 ;; arrange to reorganize minor-mode-map-alist so that things will work right.
928 (defun viper-harness-minor-mode (load-file)
929 "Familiarize Viper with a minor mode defined in LOAD_FILE.
930 Minor modes that have their own keymaps may overshadow Viper keymaps.
931 This function is designed to make Viper aware of the packages that define
934 (viper-harness-minor-mode load-file)
936 LOAD-FILE is a name of the file where the specific minor mode is defined.
937 Suffixes such as .el or .elc should be stripped."
939 (interactive "sEnter name of the load file: ")
941 (eval-after-load load-file '(viper-normalize-minor-mode-map-alist))
943 ;; Change the default for minor-mode-map-alist each time a harnessed minor
944 ;; mode adds its own keymap to the a-list.
946 (and (fboundp 'add-to-ordered-list) (boundp 'emulation-mode-map-alists))
948 load-file '(setq-default minor-mode-map-alist minor-mode-map-alist)))
952 (defun viper-ESC (arg)
953 "Emulate ESC key in Emacs.
954 Prevents multiple escape keystrokes if viper-no-multiple-ESC is true.
955 If viper-no-multiple-ESC is 'twice double ESC would ding in vi-state.
956 Other ESC sequences are emulated via the current Emacs's major mode
957 keymap. This is more convenient on TTYs, since this won't block
958 function keys such as up,down, etc. ESC will also will also work as
959 a Meta key in this case. When viper-no-multiple-ESC is nil, ESC functions
960 as a Meta key and any number of multiple escapes is allowed."
963 (cond ((and (not viper-no-multiple-ESC) (eq viper-current-state 'vi-state))
964 (setq char (viper-read-char-exclusive))
965 (viper-escape-to-emacs arg (list ?\e char) ))
966 ((and (eq viper-no-multiple-ESC 'twice)
967 (eq viper-current-state 'vi-state))
968 (setq char (viper-read-char-exclusive))
969 (if (= char (string-to-char viper-ESC-key))
971 (viper-escape-to-emacs arg (list ?\e char) )))
975 (defun viper-alternate-Meta-key (arg)
976 "Simulate Emacs Meta key."
978 (sit-for 1) (message "ESC-")
979 (viper-escape-to-emacs arg '(?\e)))
981 (defun viper-toggle-key-action ()
982 "Action bound to `viper-toggle-key'."
984 (if (and (< viper-expert-level 2) (equal viper-toggle-key "\C-z"))
985 (if (viper-window-display-p)
988 (viper-change-state-to-emacs)))
991 ;; Intercept ESC sequences on dumb terminals.
992 ;; Based on the idea contributed by Marcelino Veiga Tuimil <mveiga@dit.upm.es>
994 ;; Check if last key was ESC and if so try to reread it as a function key.
995 ;; But only if there are characters to read during a very short time.
996 ;; Returns the last event, if any.
997 (defun viper-envelop-ESC-key ()
998 (let ((event last-input-event)
1001 (if (viper-ESC-event-p event)
1003 ;; Emacs 22.50.8 introduced a bug, which makes even a single ESC into
1004 ;; a fast keyseq. To guard against this, we added a check if there
1005 ;; are other events as well
1006 (if (and (viper-fast-keysequence-p) unread-command-events)
1008 (let (minor-mode-map-alist emulation-mode-map-alists)
1009 (viper-set-unread-command-events event)
1010 (setq keyseq (read-key-sequence nil 'continue-echo))
1012 ;; If keyseq translates into something that still has ESC
1013 ;; at the beginning, separate ESC from the rest of the seq.
1014 ;; In XEmacs we check for events that are keypress meta-key
1015 ;; and convert them into [escape key]
1017 ;; This is needed for the following reason:
1018 ;; If ESC is the first symbol, we interpret it as if the
1019 ;; user typed ESC and then quickly some other symbols.
1020 ;; If ESC is not the first one, then the key sequence
1021 ;; entered was apparently translated into a function key or
1022 ;; something (e.g., one may have
1023 ;; (define-key function-key-map "\e[192z" [f11])
1024 ;; which would translate the escape-sequence generated by
1025 ;; f11 in an xterm window into the symbolic key f11.
1027 ;; If `first-key' is not an ESC event, we make it into the
1028 ;; last-command-event in order to pretend that this key was
1029 ;; pressed. This is needed to allow arrow keys to be bound to
1030 ;; macros. Otherwise, viper-exec-mapped-kbd-macro will think
1031 ;; that the last event was ESC and so it'll execute whatever is
1032 ;; bound to ESC. (Viper macros can't be bound to
1034 (let* ((first-key (elt keyseq 0))
1035 (key-mod (event-modifiers first-key)))
1036 (cond ((and (viper-ESC-event-p first-key)
1037 (not viper-translate-all-ESC-keysequences))
1038 ;; put keys following ESC on the unread list
1039 ;; and return ESC as the key-sequence
1040 (viper-set-unread-command-events (viper-subseq keyseq 1))
1041 (setq last-input-event event
1042 keyseq (if viper-emacs-p
1044 (vector (character-to-event ?\e)))))
1045 ((and viper-xemacs-p
1046 (key-press-event-p first-key)
1047 (equal '(meta) key-mod))
1048 (viper-set-unread-command-events
1050 (character-to-event (event-key first-key)))
1051 (viper-subseq keyseq 1)))
1052 (setq last-input-event event
1053 keyseq (vector (character-to-event ?\e))))
1055 (setq last-command-event
1056 (viper-copy-event first-key)))
1060 ;; this is escape event with nothing after it
1061 ;; put in unread-command-event and then re-read
1062 (viper-set-unread-command-events event)
1063 (setq keyseq (read-key-sequence nil))
1065 ;; not an escape event
1066 (setq keyseq (vector event)))
1071 ;; Listen to ESC key.
1072 ;; If a sequence of keys starting with ESC is issued with very short delays,
1073 ;; interpret these keys in Emacs mode, so ESC won't be interpreted as a Vi key.
1074 (defun viper-intercept-ESC-key ()
1075 "Function that implements ESC key in Viper emulation of Vi."
1077 (let ((cmd (or (key-binding (viper-envelop-ESC-key))
1078 '(lambda () (interactive) (error "")))))
1080 ;; call the actual function to execute ESC (if no other symbols followed)
1081 ;; or the key bound to the ESC sequence (if the sequence was issued
1082 ;; with very short delay between characters).
1083 (if (eq cmd 'viper-intercept-ESC-key)
1085 (cond ((eq viper-current-state 'vi-state)
1087 ((eq viper-current-state 'insert-state)
1088 'viper-exit-insert-state)
1089 ((eq viper-current-state 'replace-state)
1090 'viper-replace-state-exit-cmd)
1091 (t 'viper-change-state-to-vi)
1093 (call-interactively cmd)))
1098 ;; prefix argument for Vi mode
1100 ;; In Vi mode, prefix argument is a dotted pair (NUM . COM) where NUM
1101 ;; represents the numeric value of the prefix argument and COM represents
1102 ;; command prefix such as "c", "d", "m" and "y".
1104 ;; Get value part of prefix-argument ARG.
1105 (defsubst viper-p-val (arg)
1106 (cond ((null arg) 1)
1108 (if (or (null (car arg)) (equal (car arg) '(nil)))
1112 ;; Get raw value part of prefix-argument ARG.
1113 (defsubst viper-P-val (arg)
1114 (cond ((consp arg) (car arg))
1117 ;; Get com part of prefix-argument ARG.
1118 (defsubst viper-getcom (arg)
1119 (cond ((null arg) nil)
1120 ((consp arg) (cdr arg))
1123 ;; Get com part of prefix-argument ARG and modify it.
1124 (defun viper-getCom (arg)
1125 (let ((com (viper-getcom arg)))
1126 (cond ((viper= com ?c) ?c)
1127 ;; Previously, ?c was being converted to ?C, but this prevented
1128 ;; multiline replace regions.
1129 ;;((viper= com ?c) ?C)
1130 ((viper= com ?d) ?D)
1131 ((viper= com ?y) ?Y)
1135 ;; Compute numeric prefix arg value.
1136 ;; Invoked by EVENT-CHAR. COM is the command part obtained so far.
1137 (defun viper-prefix-arg-value (event-char com)
1138 (let ((viper-intermediate-command 'viper-digit-argument)
1140 ;; read while number
1141 (while (and (viper-characterp event-char)
1142 (>= event-char ?0) (<= event-char ?9))
1143 (setq value (+ (* (if (integerp value) value 0) 10) (- event-char ?0)))
1144 (setq event-char (viper-read-event-convert-to-char)))
1146 (setq prefix-arg value)
1147 (if com (setq prefix-arg (cons prefix-arg com)))
1148 (while (eq event-char ?U)
1149 (viper-describe-arg prefix-arg)
1150 (setq event-char (viper-read-event-convert-to-char)))
1152 (if (or com (and (not (eq viper-current-state 'vi-state))
1153 ;; make sure it is a Vi command
1154 (viper-characterp event-char)
1155 (viper-vi-command-p event-char)
1157 ;; If appears to be one of the vi commands,
1158 ;; then execute it with funcall and clear prefix-arg in order to not
1159 ;; confuse subsequent commands
1161 ;; last-command-char is the char we want emacs to think was typed
1162 ;; last. If com is not nil, the viper-digit-argument command was
1163 ;; called from within viper-prefix-arg command, such as `d', `w',
1164 ;; etc., i.e., the user typed, say, d2. In this case, `com' would be
1165 ;; `d', `w', etc. If viper-digit-argument was invoked by
1166 ;; viper-escape-to-vi (which is indicated by the fact that the
1167 ;; current state is not vi-state), then `event-char' represents the
1168 ;; vi command to be executed (e.g., `d', `w', etc). Again,
1169 ;; last-command-char must make emacs believe that this is the command
1171 (cond ((eq event-char 'return) (setq event-char ?\C-m))
1172 ((eq event-char 'delete) (setq event-char ?\C-?))
1173 ((eq event-char 'backspace) (setq event-char ?\C-h))
1174 ((eq event-char 'space) (setq event-char ?\ )))
1175 (setq last-command-char (or com event-char))
1176 (setq func (viper-exec-form-in-vi
1177 `(key-binding (char-to-string ,event-char))))
1178 (funcall func prefix-arg)
1179 (setq prefix-arg nil))
1180 ;; some other command -- let emacs do it in its own way
1181 (viper-set-unread-command-events event-char))
1185 ;; Vi operator as prefix argument."
1186 (defun viper-prefix-arg-com (char value com)
1191 (viper-memq-char char
1192 (list ?c ?d ?y ?! ?< ?> ?= ?# ?r ?R ?\"
1193 viper-buffer-search-char)))
1195 ;; this means that we already have a command character, so we
1196 ;; construct a com list and exit while. however, if char is "
1199 ;; new com is (CHAR . OLDCOM)
1200 (if (viper-memq-char char '(?# ?\")) (error ""))
1201 (setq com (cons char com))
1203 ;; If com is nil we set com as char, and read more. Again, if char is
1204 ;; ", we read the name of register and store it in viper-use-register.
1205 ;; if char is !, =, or #, a complete com is formed so we exit the while
1207 (cond ((viper-memq-char char '(?! ?=))
1209 (setq char (read-char))
1212 ;; read a char and encode it as com
1213 (setq com (+ 128 (read-char)))
1214 (setq char (read-char)))
1216 (let ((reg (read-char)))
1217 (if (viper-valid-register reg)
1218 (setq viper-use-register reg)
1220 (setq char (read-char))))
1223 (setq char (read-char))))))
1226 ;; `com' is a single char, so we construct the command argument
1227 ;; and if `char' is `?', we describe the arg; otherwise
1228 ;; we prepare the command that will be executed at the end.
1230 (setq cmd-info (cons value com))
1231 (while (viper= char ?U)
1232 (viper-describe-arg cmd-info)
1233 (setq char (read-char)))
1234 ;; `char' is a movement cmd, a digit arg cmd, or a register cmd---so we
1235 ;; execute it at the very end
1236 (or (viper-movement-command-p char)
1237 (viper-digit-command-p char)
1238 (viper-regsuffix-command-p char)
1239 (viper= char ?!) ; bang command
1241 (setq cmd-to-exec-at-end
1242 (viper-exec-form-in-vi
1243 `(key-binding (char-to-string ,char)))))
1245 ;; as com is non-nil, this means that we have a command to execute
1246 (if (viper-memq-char (car com) '(?r ?R))
1247 ;; execute apropriate region command.
1248 (let ((char (car com)) (com (cdr com)))
1249 (setq prefix-arg (cons value com))
1250 (if (viper= char ?r)
1251 (viper-region prefix-arg)
1252 (viper-Region prefix-arg))
1254 (setq prefix-arg nil))
1255 ;; otherwise, reset prefix arg and call appropriate command
1256 (setq value (if (null value) 1 value))
1257 (setq prefix-arg nil)
1259 ;; If we change ?C to ?c here, then cc will enter replacement mode
1260 ;; rather than deleting lines. However, it will affect 1 less line than
1261 ;; normal. We decided to not use replacement mode here and follow Vi,
1262 ;; since replacement mode on n full lines can be achieved with nC.
1263 ((equal com '(?c . ?c)) (viper-line (cons value ?C)))
1264 ((equal com '(?d . ?d)) (viper-line (cons value ?D)))
1265 ((equal com '(?d . ?y)) (viper-yank-defun))
1266 ((equal com '(?y . ?y)) (viper-line (cons value ?Y)))
1267 ((equal com '(?< . ?<)) (viper-line (cons value ?<)))
1268 ((equal com '(?> . ?>)) (viper-line (cons value ?>)))
1269 ((equal com '(?! . ?!)) (viper-line (cons value ?!)))
1270 ((equal com '(?= . ?=)) (viper-line (cons value ?=)))
1273 (if cmd-to-exec-at-end
1275 (setq last-command-char char)
1276 (setq last-command-event
1278 (if viper-xemacs-p (character-to-event char) char)))
1280 (funcall cmd-to-exec-at-end cmd-info)
1285 (defun viper-describe-arg (arg)
1287 (setq val (viper-P-val arg)
1288 com (viper-getcom arg))
1291 (message "Value is nil, and command is nil")
1292 (message "Value is nil, and command is `%c'" com))
1294 (message "Value is `%d', and command is nil" val)
1295 (message "Value is `%d', and command is `%c'" val com)))))
1297 (defun viper-digit-argument (arg)
1298 "Begin numeric argument for the next command."
1300 (viper-leave-region-active)
1301 (viper-prefix-arg-value
1302 last-command-char (if (consp arg) (cdr arg) nil)))
1304 (defun viper-command-argument (arg)
1305 "Accept a motion command as an argument."
1307 (let ((viper-intermediate-command 'viper-command-argument))
1309 (viper-prefix-arg-com
1311 (cond ((null arg) nil)
1312 ((consp arg) (car arg))
1313 ((integerp arg) arg)
1314 (t (error viper-InvalidCommandArgument)))
1315 (cond ((null arg) nil)
1316 ((consp arg) (cdr arg))
1317 ((integerp arg) nil)
1318 (t (error viper-InvalidCommandArgument))))
1319 (quit (setq viper-use-register nil)
1320 (signal 'quit nil)))
1321 (viper-deactivate-mark)))
1324 ;; repeat last destructive command
1326 ;; Append region to text in register REG.
1327 ;; START and END are buffer positions indicating what to append.
1328 (defsubst viper-append-to-register (reg start end)
1329 (set-register reg (concat (if (stringp (get-register reg))
1330 (get-register reg) "")
1331 (buffer-substring start end))))
1333 ;; Saves last inserted text for possible use by viper-repeat command.
1334 (defun viper-save-last-insertion (beg end)
1336 (setq viper-last-insertion (buffer-substring beg end))
1338 ;; beg or end marker are somehow screwed up
1339 (setq viper-last-insertion nil)))
1340 (setq viper-last-insertion (buffer-substring beg end))
1341 (or (< (length viper-d-com) 5)
1342 (setcar (nthcdr 4 viper-d-com) viper-last-insertion))
1343 (or (null viper-command-ring)
1344 (ring-empty-p viper-command-ring)
1346 (setcar (nthcdr 4 (viper-current-ring-item viper-command-ring))
1347 viper-last-insertion)
1348 ;; del most recent elt, if identical to the second most-recent
1349 (viper-cleanup-ring viper-command-ring)))
1352 (defsubst viper-yank-last-insertion ()
1353 "Inserts the text saved by the previous viper-save-last-insertion command."
1355 (insert viper-last-insertion)
1359 ;; define functions to be executed
1361 ;; invoked by the `C' command
1362 (defun viper-exec-change (m-com com)
1363 (or (and (markerp viper-com-point) (marker-position viper-com-point))
1364 (set-marker viper-com-point (point) (current-buffer)))
1365 ;; handle C cmd at the eol and at eob.
1366 (if (or (and (eolp) (= viper-com-point (point)))
1367 (= viper-com-point (point-max)))
1369 (insert " ")(backward-char 1)))
1370 (if (= viper-com-point (point))
1371 (viper-forward-char-carefully))
1372 (set-mark viper-com-point)
1373 (if (eq m-com 'viper-next-line-at-bol)
1374 (viper-enlarge-region (mark t) (point)))
1375 (if (< (point) (mark t))
1376 (exchange-point-and-mark))
1377 (if (eq (preceding-char) ?\n)
1378 (viper-backward-char-carefully)) ; give back the newline
1379 (if (eq viper-intermediate-command 'viper-repeat)
1380 (viper-change-subr (mark t) (point))
1381 (viper-change (mark t) (point))
1384 ;; this is invoked by viper-substitute-line
1385 (defun viper-exec-Change (m-com com)
1387 (set-mark viper-com-point)
1388 (viper-enlarge-region (mark t) (point))
1389 (if viper-use-register
1391 (cond ((viper-valid-register viper-use-register '(letter digit))
1393 viper-use-register (mark t) (point) nil))
1394 ((viper-valid-register viper-use-register '(Letter))
1395 (viper-append-to-register
1396 (downcase viper-use-register) (mark t) (point)))
1397 (t (setq viper-use-register nil)
1398 (error viper-InvalidRegister viper-use-register)))
1399 (setq viper-use-register nil)))
1400 (delete-region (mark t) (point)))
1402 (if (eq viper-intermediate-command 'viper-repeat)
1403 (viper-yank-last-insertion)
1404 (viper-change-state-to-insert)
1407 (defun viper-exec-delete (m-com com)
1408 (or (and (markerp viper-com-point) (marker-position viper-com-point))
1409 (set-marker viper-com-point (point) (current-buffer)))
1410 (let (chars-deleted)
1411 (if viper-use-register
1413 (cond ((viper-valid-register viper-use-register '(letter digit))
1415 viper-use-register viper-com-point (point) nil))
1416 ((viper-valid-register viper-use-register '(Letter))
1417 (viper-append-to-register
1418 (downcase viper-use-register) viper-com-point (point)))
1419 (t (setq viper-use-register nil)
1420 (error viper-InvalidRegister viper-use-register)))
1421 (setq viper-use-register nil)))
1423 (if (eq last-command 'd-command) 'kill-region nil))
1424 (setq chars-deleted (abs (- (point) viper-com-point)))
1425 (if (> chars-deleted viper-change-notification-threshold)
1426 (unless (viper-is-in-minibuffer)
1427 (message "Deleted %d characters" chars-deleted)))
1428 (kill-region viper-com-point (point))
1429 (setq this-command 'd-command)
1430 (if viper-ex-style-motion
1431 (if (and (eolp) (not (bolp))) (backward-char 1)))))
1433 (defun viper-exec-Delete (m-com com)
1435 (set-mark viper-com-point)
1436 (viper-enlarge-region (mark t) (point))
1437 (let (lines-deleted)
1438 (if viper-use-register
1440 (cond ((viper-valid-register viper-use-register '(letter digit))
1442 viper-use-register (mark t) (point) nil))
1443 ((viper-valid-register viper-use-register '(Letter))
1444 (viper-append-to-register
1445 (downcase viper-use-register) (mark t) (point)))
1446 (t (setq viper-use-register nil)
1447 (error viper-InvalidRegister viper-use-register)))
1448 (setq viper-use-register nil)))
1450 (if (eq last-command 'D-command) 'kill-region nil))
1451 (setq lines-deleted (count-lines (point) viper-com-point))
1452 (if (> lines-deleted viper-change-notification-threshold)
1453 (unless (viper-is-in-minibuffer)
1454 (message "Deleted %d lines" lines-deleted)))
1455 (kill-region (mark t) (point))
1456 (if (eq m-com 'viper-line) (setq this-command 'D-command)))
1457 (back-to-indentation)))
1460 (defun viper-exec-yank (m-com com)
1461 (or (and (markerp viper-com-point) (marker-position viper-com-point))
1462 (set-marker viper-com-point (point) (current-buffer)))
1464 (if viper-use-register
1466 (cond ((viper-valid-register viper-use-register '(letter digit))
1468 viper-use-register viper-com-point (point) nil))
1469 ((viper-valid-register viper-use-register '(Letter))
1470 (viper-append-to-register
1471 (downcase viper-use-register) viper-com-point (point)))
1472 (t (setq viper-use-register nil)
1473 (error viper-InvalidRegister viper-use-register)))
1474 (setq viper-use-register nil)))
1475 (setq last-command nil)
1476 (copy-region-as-kill viper-com-point (point))
1477 (setq chars-saved (abs (- (point) viper-com-point)))
1478 (if (> chars-saved viper-change-notification-threshold)
1479 (unless (viper-is-in-minibuffer)
1480 (message "Saved %d characters" chars-saved)))
1481 (goto-char viper-com-point)))
1484 (defun viper-exec-Yank (m-com com)
1486 (set-mark viper-com-point)
1487 (viper-enlarge-region (mark t) (point))
1489 (if viper-use-register
1491 (cond ((viper-valid-register viper-use-register '(letter digit))
1493 viper-use-register (mark t) (point) nil))
1494 ((viper-valid-register viper-use-register '(Letter))
1495 (viper-append-to-register
1496 (downcase viper-use-register) (mark t) (point)))
1497 (t (setq viper-use-register nil)
1498 (error viper-InvalidRegister viper-use-register)))
1499 (setq viper-use-register nil)))
1500 (setq last-command nil)
1501 (copy-region-as-kill (mark t) (point))
1502 (setq lines-saved (count-lines (mark t) (point)))
1503 (if (> lines-saved viper-change-notification-threshold)
1504 (unless (viper-is-in-minibuffer)
1505 (message "Saved %d lines" lines-saved)))))
1506 (viper-deactivate-mark)
1507 (goto-char viper-com-point))
1509 (defun viper-exec-bang (m-com com)
1511 (set-mark viper-com-point)
1512 (viper-enlarge-region (mark t) (point))
1513 (exchange-point-and-mark)
1514 (shell-command-on-region
1517 (setq viper-last-shell-com
1518 (viper-read-string-with-history
1521 'viper-shell-history
1522 (car viper-shell-history)
1524 viper-last-shell-com)
1527 (defun viper-exec-equals (m-com com)
1529 (set-mark viper-com-point)
1530 (viper-enlarge-region (mark t) (point))
1531 (if (> (mark t) (point)) (exchange-point-and-mark))
1532 (indent-region (mark t) (point) nil)))
1534 (defun viper-exec-shift (m-com com)
1536 (set-mark viper-com-point)
1537 (viper-enlarge-region (mark t) (point))
1538 (if (> (mark t) (point)) (exchange-point-and-mark))
1539 (indent-rigidly (mark t) (point)
1542 (- viper-shift-width))))
1543 ;; return point to where it was before shift
1544 (goto-char viper-com-point))
1546 ;; this is needed because some commands fake com by setting it to ?r, which
1547 ;; denotes repeated insert command.
1548 (defsubst viper-exec-dummy (m-com com)
1551 (defun viper-exec-buffer-search (m-com com)
1552 (setq viper-s-string
1553 (regexp-quote (buffer-substring (point) viper-com-point)))
1554 (setq viper-s-forward t)
1555 (setq viper-search-history (cons viper-s-string viper-search-history))
1556 (setq viper-intermediate-command 'viper-exec-buffer-search)
1557 (viper-search viper-s-string viper-s-forward 1))
1559 (defvar viper-exec-array (make-vector 128 nil))
1561 ;; Using a dispatch array allows adding functions like buffer search
1562 ;; without affecting other functions. Buffer search can now be bound
1563 ;; to any character.
1565 (aset viper-exec-array ?c 'viper-exec-change)
1566 (aset viper-exec-array ?C 'viper-exec-Change)
1567 (aset viper-exec-array ?d 'viper-exec-delete)
1568 (aset viper-exec-array ?D 'viper-exec-Delete)
1569 (aset viper-exec-array ?y 'viper-exec-yank)
1570 (aset viper-exec-array ?Y 'viper-exec-Yank)
1571 (aset viper-exec-array ?r 'viper-exec-dummy)
1572 (aset viper-exec-array ?! 'viper-exec-bang)
1573 (aset viper-exec-array ?< 'viper-exec-shift)
1574 (aset viper-exec-array ?> 'viper-exec-shift)
1575 (aset viper-exec-array ?= 'viper-exec-equals)
1579 ;; This function is called by various movement commands to execute a
1580 ;; destructive command on the region specified by the movement command. For
1581 ;; instance, if the user types cw, then the command viper-forward-word will
1582 ;; call viper-execute-com to execute viper-exec-change, which eventually will
1583 ;; call viper-change to invoke the replace mode on the region.
1585 ;; The var viper-d-com is set to (M-COM VAL COM REG INSETED-TEXT COMMAND-KEYS)
1586 ;; via a call to viper-set-destructive-command, for later use by viper-repeat.
1587 (defun viper-execute-com (m-com val com)
1588 (let ((reg viper-use-register))
1589 ;; this is the special command `#'
1591 (viper-special-prefix-com (- com 128))
1592 (let ((fn (aref viper-exec-array com)))
1594 (error "%c: %s" com viper-InvalidViCommand)
1595 (funcall fn m-com com))))
1596 (if (viper-dotable-command-p com)
1597 (viper-set-destructive-command
1598 (list m-com val com reg nil nil)))
1602 (defun viper-repeat (arg)
1603 "Re-execute last destructive command.
1604 Use the info in viper-d-com, which has the form
1605 \(com val ch reg inserted-text command-keys\),
1606 where `com' is the command to be re-executed, `val' is the
1607 argument to `com', `ch' is a flag for repeat, and `reg' is optional;
1608 if it exists, it is the name of the register for `com'.
1609 If the prefix argument, ARG, is non-nil, it is used instead of `val'."
1611 (let ((save-point (point)) ; save point before repeating prev cmd
1612 ;; Pass along that we are repeating a destructive command
1613 ;; This tells viper-set-destructive-command not to update
1614 ;; viper-command-ring
1615 (viper-intermediate-command 'viper-repeat))
1616 (if (eq last-command 'viper-undo)
1617 ;; if the last command was viper-undo, then undo-more
1619 ;; otherwise execute the command stored in viper-d-com. if arg is
1620 ;; non-nil its prefix value is used as new prefix value for the command.
1621 (let ((m-com (car viper-d-com))
1622 (val (viper-P-val arg))
1623 (com (nth 2 viper-d-com))
1624 (reg (nth 3 viper-d-com)))
1625 (if (null val) (setq val (nth 1 viper-d-com)))
1626 (if (null m-com) (error "No previous command to repeat"))
1627 (setq viper-use-register reg)
1628 (if (nth 4 viper-d-com) ; text inserted by command
1629 (setq viper-last-insertion (nth 4 viper-d-com)
1630 viper-d-char (nth 4 viper-d-com)))
1631 (funcall m-com (cons val com))
1632 (cond ((and (< save-point (point)) viper-keep-point-on-repeat)
1633 (goto-char save-point)) ; go back to before repeat.
1634 ((and (< save-point (point)) viper-ex-style-editing)
1635 (or (bolp) (backward-char 1))))
1636 (if (and (eolp) (not (bolp)))
1639 (viper-adjust-undo) ; take care of undo
1640 ;; If the prev cmd was rotating the command ring, this means that `.' has
1641 ;; just executed a command from that ring. So, push it on the ring again.
1642 ;; If we are just executing previous command , then don't push viper-d-com
1643 ;; because viper-d-com is not fully constructed in this case (its keys and
1644 ;; the inserted text may be nil). Besides, in this case, the command
1645 ;; executed by `.' is already on the ring.
1646 (if (eq last-command 'viper-display-current-destructive-command)
1647 (viper-push-onto-ring viper-d-com 'viper-command-ring))
1648 (viper-deactivate-mark)
1651 (defun viper-repeat-from-history ()
1652 "Repeat a destructive command from history.
1653 Doesn't change viper-command-ring in any way, so `.' will work as before
1654 executing this command.
1655 This command is supposed to be bound to a two-character Vi macro where
1656 the second character is a digit 0 to 9. The digit indicates which
1657 history command to execute. `<char>0' is equivalent to `.', `<char>1'
1658 invokes the command before that, etc."
1660 (let* ((viper-intermediate-command 'repeating-display-destructive-command)
1661 (idx (cond (viper-this-kbd-macro
1663 (symbol-name (elt viper-this-kbd-macro 1))))
1666 (viper-d-com viper-d-com))
1668 (or (and (numberp num) (<= 0 num) (<= num 9))
1673 "`viper-repeat-from-history' must be invoked as a Vi macro bound to `<key><digit>'")))
1675 (setq viper-d-com (viper-special-ring-rotate1 viper-command-ring -1))
1676 (setq num (1- num)))
1679 (viper-special-ring-rotate1 viper-command-ring 1)
1680 (setq num (1+ num)))
1684 ;; The hash-command. It is invoked interactively by the key sequence #<char>.
1685 ;; The chars that can follow `#' are determined by viper-hash-command-p
1686 (defun viper-special-prefix-com (char)
1687 (cond ((viper= char ?c)
1688 (downcase-region (min viper-com-point (point))
1689 (max viper-com-point (point))))
1691 (upcase-region (min viper-com-point (point))
1692 (max viper-com-point (point))))
1694 (push-mark viper-com-point t)
1695 (viper-global-execute))
1697 (push-mark viper-com-point t)
1698 (viper-quote-region))
1700 (funcall viper-spell-function viper-com-point (point)))
1701 (t (error "#%c: %s" char viper-InvalidViCommand))))
1706 (defun viper-undo ()
1707 "Undo previous change."
1710 (let ((modified (buffer-modified-p))
1711 (before-undo-pt (point-marker))
1712 (after-change-functions after-change-functions)
1713 undo-beg-posn undo-end-posn)
1715 ;; no need to remove this hook, since this var has scope inside a let.
1716 (add-hook 'after-change-functions
1717 '(lambda (beg end len)
1718 (setq undo-beg-posn beg
1719 undo-end-posn (or end beg))))
1723 (setq undo-beg-posn (or undo-beg-posn before-undo-pt)
1724 undo-end-posn (or undo-end-posn undo-beg-posn))
1726 (goto-char undo-beg-posn)
1728 (if (and viper-keep-point-on-undo
1729 (pos-visible-in-window-p before-undo-pt))
1731 (push-mark (point-marker) t)
1732 (viper-sit-for-short 300)
1733 (goto-char undo-end-posn)
1734 (viper-sit-for-short 300)
1735 (if (and (> (viper-chars-in-region undo-beg-posn before-undo-pt) 1)
1736 (> (viper-chars-in-region undo-end-posn before-undo-pt) 1))
1737 (goto-char before-undo-pt)
1738 (goto-char undo-beg-posn)))
1739 (push-mark before-undo-pt t))
1740 (if (and (eolp) (not (bolp))) (backward-char 1))
1741 (if (not modified) (set-buffer-modified-p t)))
1742 (setq this-command 'viper-undo))
1744 ;; Continue undoing previous changes.
1745 (defun viper-undo-more ()
1746 (message "undo more!")
1750 (message "No further undo information in this buffer")))
1751 (if (and (eolp) (not (bolp))) (backward-char 1))
1752 (setq this-command 'viper-undo))
1754 ;; The following two functions are used to set up undo properly.
1755 ;; In VI, unlike Emacs, if you open a line, say, and add a bunch of lines,
1756 ;; they are undone all at once.
1757 (defun viper-adjust-undo ()
1758 (if viper-undo-needs-adjustment
1759 (let ((inhibit-quit t)
1761 (setq viper-undo-needs-adjustment nil)
1762 (if (listp buffer-undo-list)
1763 (if (setq tmp (memq viper-buffer-undo-list-mark buffer-undo-list))
1765 (setq tmp2 (cdr tmp)) ; the part after mark
1767 ;; cut tail from buffer-undo-list temporarily by direct
1768 ;; manipulation with pointers in buffer-undo-list
1771 (setq buffer-undo-list (delq nil buffer-undo-list))
1772 (setq buffer-undo-list
1773 (delq viper-buffer-undo-list-mark buffer-undo-list))
1774 ;; restore tail of buffer-undo-list
1775 (setq buffer-undo-list (nconc buffer-undo-list tmp2)))
1776 (setq buffer-undo-list (delq nil buffer-undo-list)))))
1780 (defun viper-set-complex-command-for-undo ()
1781 (if (listp buffer-undo-list)
1782 (if (not viper-undo-needs-adjustment)
1783 (let ((inhibit-quit t))
1784 (setq buffer-undo-list
1785 (cons viper-buffer-undo-list-mark buffer-undo-list))
1786 (setq viper-undo-needs-adjustment t)))))
1791 (defun viper-display-current-destructive-command ()
1792 (let ((text (nth 4 viper-d-com))
1793 (keys (nth 5 viper-d-com))
1796 (setq this-command 'viper-display-current-destructive-command)
1798 (message " `.' runs %s%s"
1799 (concat "`" (viper-array-to-string keys) "'")
1800 (viper-abbreviate-string
1801 (viper-cond-compile-for-xemacs-or-emacs
1802 (replace-in-string ; xemacs
1803 (cond ((characterp text) (char-to-string text))
1804 ((stringp text) text)
1810 " inserting `" "'" " ......."))
1814 ;; don't change viper-d-com if it was viper-repeat command invoked with `.'
1815 ;; or in some other way (non-interactively).
1816 (defun viper-set-destructive-command (list)
1817 (or (eq viper-intermediate-command 'viper-repeat)
1819 (setq viper-d-com list)
1820 (setcar (nthcdr 5 viper-d-com)
1821 (viper-array-to-string (if (arrayp viper-this-command-keys)
1822 viper-this-command-keys
1823 (this-command-keys))))
1824 (viper-push-onto-ring viper-d-com 'viper-command-ring)))
1825 (setq viper-this-command-keys nil))
1828 (defun viper-prev-destructive-command (next)
1829 "Find previous destructive command in the history of destructive commands.
1830 With prefix argument, find next destructive command."
1832 (let (cmd viper-intermediate-command)
1833 (if (eq last-command 'viper-display-current-destructive-command)
1834 ;; repeated search through command history
1835 (setq viper-intermediate-command
1836 'repeating-display-destructive-command)
1837 ;; first search through command history--set temp ring
1838 (setq viper-temp-command-ring (copy-list viper-command-ring)))
1840 (viper-special-ring-rotate1 viper-temp-command-ring 1)
1841 (viper-special-ring-rotate1 viper-temp-command-ring -1)))
1844 (setq viper-d-com cmd))
1845 (viper-display-current-destructive-command)))
1848 (defun viper-next-destructive-command ()
1849 "Find next destructive command in the history of destructive commands."
1851 (viper-prev-destructive-command 'next))
1854 (defun viper-insert-prev-from-insertion-ring (arg)
1855 "Cycle through insertion ring in the direction of older insertions.
1856 Undoes previous insertion and inserts new.
1857 With prefix argument, cycles in the direction of newer elements.
1858 In minibuffer, this command executes whatever the invocation key is bound
1859 to in the global map, instead of cycling through the insertion ring."
1861 (let (viper-intermediate-command)
1862 (if (eq last-command 'viper-insert-from-insertion-ring)
1863 (progn ; repeated search through insertion history
1864 (setq viper-intermediate-command 'repeating-insertion-from-ring)
1865 (if (eq viper-current-state 'replace-state)
1867 (if viper-last-inserted-string-from-insertion-ring
1868 (backward-delete-char
1869 (length viper-last-inserted-string-from-insertion-ring))))
1871 ;;first search through insertion history
1872 (setq viper-temp-insertion-ring (copy-list viper-insertion-ring)))
1873 (setq this-command 'viper-insert-from-insertion-ring)
1874 ;; so that things will be undone properly
1875 (setq buffer-undo-list (cons nil buffer-undo-list))
1876 (setq viper-last-inserted-string-from-insertion-ring
1877 (viper-special-ring-rotate1 viper-temp-insertion-ring (if arg 1 -1)))
1879 ;; this change of viper-intermediate-command must come after
1880 ;; viper-special-ring-rotate1, so that the ring will rotate, but before the
1882 (setq viper-intermediate-command nil)
1883 (if viper-last-inserted-string-from-insertion-ring
1884 (insert viper-last-inserted-string-from-insertion-ring))
1887 (defun viper-insert-next-from-insertion-ring ()
1888 "Cycle through insertion ring in the direction of older insertions.
1889 Undo previous insertion and inserts new."
1891 (viper-insert-prev-from-insertion-ring 'next))
1895 ;; some region utilities
1897 ;; If at the last line of buffer, add \\n before eob, if newline is missing.
1898 (defun viper-add-newline-at-eob-if-necessary ()
1901 ;; make sure all lines end with newline, unless in the minibuffer or
1902 ;; when requested otherwise (require-final-newline is nil)
1905 require-final-newline
1906 (not (viper-is-in-minibuffer))
1907 (not buffer-read-only))
1910 (defun viper-yank-defun ()
1912 (copy-region-as-kill (point) (mark t)))
1914 ;; Enlarge region between BEG and END.
1915 (defun viper-enlarge-region (beg end)
1916 (or beg (setq beg end)) ; if beg is nil, set to end
1917 (or end (setq end beg)) ; if end is nil, set to beg
1920 (progn (goto-char beg) (set-mark end))
1924 (exchange-point-and-mark)
1925 (if (or (not (eobp)) (not (bolp))) (forward-line 1))
1926 (if (not (eobp)) (beginning-of-line))
1927 (if (> beg end) (exchange-point-and-mark)))
1930 ;; Quote region by each line with a user supplied string.
1931 (defun viper-quote-region ()
1932 (let ((quote-str viper-quote-string)
1933 (donot-change-dafault t))
1935 (viper-read-string-with-history
1938 'viper-quote-region-history
1939 (cond ((string-match "tex.*-mode" (symbol-name major-mode)) "%%")
1940 ((string-match "java.*-mode" (symbol-name major-mode)) "//")
1941 ((string-match "perl.*-mode" (symbol-name major-mode)) "#")
1942 ((string-match "lisp.*-mode" (symbol-name major-mode)) ";;")
1943 ((memq major-mode '(c-mode cc-mode c++-mode)) "//")
1944 ((memq major-mode '(sh-mode shell-mode)) "#")
1945 (t (setq donot-change-dafault nil)
1947 (or donot-change-dafault
1948 (setq viper-quote-string quote-str))
1949 (viper-enlarge-region (point) (mark t))
1950 (if (> (point) (mark t)) (exchange-point-and-mark))
1954 (while (and (< (point) (mark t)) (bolp))
1959 ;; Tells whether BEG is on the same line as END.
1960 ;; If one of the args is nil, it'll return nil.
1961 (defun viper-same-line (beg end)
1962 (let ((selective-display nil)
1965 (if (and beg end (> beg end))
1970 (cond ((or (> beg (point-max)) (> end (point-max))) ; out of range
1973 ;; This 'if' is needed because Emacs treats the next empty line
1974 ;; as part of the previous line.
1975 (if (= (viper-line-pos 'start) end)
1977 (<= (+ incr (count-lines beg end)) 1))))
1981 ;; Check if the string ends with a newline.
1982 (defun viper-end-with-a-newline-p (string)
1983 (or (string= string "")
1984 (= (viper-seq-last-elt string) ?\n)))
1986 (defun viper-tmp-insert-at-eob (msg)
1987 (let ((savemax (point-max)))
1991 (goto-char savemax) (delete-region (point) (point-max))
1996 ;;; Minibuffer business
1998 (defsubst viper-set-minibuffer-style ()
1999 (add-hook 'minibuffer-setup-hook 'viper-minibuffer-setup-sentinel))
2002 (defun viper-minibuffer-setup-sentinel ()
2003 (let ((hook (if viper-vi-style-in-minibuffer
2004 'viper-change-state-to-insert
2005 'viper-change-state-to-emacs)))
2006 ;; making buffer-local variables so that normal buffers won't affect the
2007 ;; minibuffer and vice versa. Otherwise, command arguments will affect
2008 ;; minibuffer ops and insertions from the minibuffer will change those in
2009 ;; the normal buffers
2010 (make-local-variable 'viper-d-com)
2011 (make-local-variable 'viper-last-insertion)
2012 (make-local-variable 'viper-command-ring)
2013 (setq viper-d-com nil
2014 viper-last-insertion nil
2015 viper-command-ring nil)
2019 ;; Thie is a temp hook that uses free variables init-message and initial.
2020 ;; A dirty feature, but it is the simplest way to have it do the right thing.
2021 ;; The INIT-MESSAGE and INITIAL vars come from the scope set by
2022 ;; viper-read-string-with-history
2023 (defun viper-minibuffer-standard-hook ()
2024 (if (stringp init-message)
2025 (viper-tmp-insert-at-eob init-message))
2026 (if (stringp initial)
2028 ;; don't wait if we have unread events or in kbd macro
2029 (or unread-command-events
2032 (if (fboundp 'minibuffer-prompt-end)
2033 (delete-region (minibuffer-prompt-end) (point-max))
2037 (defsubst viper-minibuffer-real-start ()
2038 (if (fboundp 'minibuffer-prompt-end)
2039 (minibuffer-prompt-end)
2043 ;; Interpret last event in the local map first; if fails, use exit-minibuffer.
2044 ;; Run viper-minibuffer-exit-hook before exiting.
2045 (defun viper-exit-minibuffer ()
2046 "Exit minibuffer Viper way."
2049 (setq command (local-key-binding (char-to-string last-command-char)))
2050 (run-hooks 'viper-minibuffer-exit-hook)
2052 (command-execute command)
2053 (exit-minibuffer))))
2056 (defcustom viper-smart-suffix-list
2057 '("" "tex" "c" "cc" "C" "java" "el" "html" "htm" "xml"
2058 "pl" "flr" "P" "p" "h" "H")
2059 "*List of suffixes that Viper tries to append to filenames ending with a `.'.
2060 This is useful when the current directory contains files with the same
2061 prefix and many different suffixes. Usually, only one of the suffixes
2062 represents an editable file. However, file completion will stop at the `.'
2063 The smart suffix feature lets you hit RET in such a case, and Viper will
2064 select the appropriate suffix.
2066 Suffixes are tried in the order given and the first suffix for which a
2067 corresponding file exists is selected. If no file exists for any of the
2068 suffixes, the user is asked to confirm.
2070 To turn this feature off, set this variable to nil."
2071 :type '(repeat string)
2075 ;; Try to add a suitable suffix to files whose name ends with a `.'
2076 ;; Useful when the user hits RET on a non-completed file name.
2077 ;; Used as a minibuffer exit hook in read-file-name
2078 (defun viper-file-add-suffix ()
2080 (len (length viper-smart-suffix-list))
2081 (file (buffer-substring-no-properties
2082 (viper-minibuffer-real-start) (point-max)))
2084 (goto-char (point-max))
2085 (if (and viper-smart-suffix-list (string-match "\\.$" file))
2087 (while (and (not found) (< count len))
2088 (setq suff (nth count viper-smart-suffix-list)
2091 (format "%s%s" (substitute-in-file-name file) suff))
2098 (viper-tmp-insert-at-eob " [Please complete file name]")
2100 (while (not (memq cmd
2101 '(exit-minibuffer viper-exit-minibuffer)))
2103 (key-binding (setq key (read-key-sequence nil))))
2104 (cond ((eq cmd 'self-insert-command)
2105 (viper-cond-compile-for-xemacs-or-emacs
2106 (insert (events-to-keys key)) ; xemacs
2107 (insert key) ; emacs
2109 ((memq cmd '(exit-minibuffer viper-exit-minibuffer))
2111 (t (command-execute cmd)))
2116 (defun viper-minibuffer-trim-tail ()
2117 "Delete junk at the end of the first line of the minibuffer input.
2118 Remove this function from `viper-minibuffer-exit-hook', if this causes
2120 (if (viper-is-in-minibuffer)
2122 (goto-char (viper-minibuffer-real-start))
2124 (delete-region (point) (point-max)))))
2127 ;;; Reading string with history
2129 (defun viper-read-string-with-history (prompt &optional initial
2130 history-var default keymap
2132 ;; Read string, prompting with PROMPT and inserting the INITIAL
2133 ;; value. Uses HISTORY-VAR. DEFAULT is the default value to accept if the
2134 ;; input is an empty string.
2135 ;; Default value is displayed until the user types something in the
2137 ;; KEYMAP is used, if given, instead of minibuffer-local-map.
2138 ;; INIT-MESSAGE is the message temporarily displayed after entering the
2140 (let ((minibuffer-setup-hook
2141 ;; stolen from add-hook
2143 (if (boundp 'minibuffer-setup-hook)
2144 minibuffer-setup-hook
2147 'viper-minibuffer-standard-hook
2148 (if (or (not (listp old)) (eq (car old) 'lambda))
2154 (setq keymap (or keymap minibuffer-local-map)
2155 initial (or initial "")
2156 temp-msg (if default
2157 (format "(default: %s) " default)
2160 (setq viper-incomplete-ex-cmd nil)
2161 (setq val (read-from-minibuffer prompt
2162 (concat temp-msg initial val padding)
2163 keymap nil history-var))
2164 (setq minibuffer-setup-hook nil
2165 padding (viper-array-to-string (this-command-keys))
2167 ;; the following tries to be smart about what to put in history
2168 (if (not (string= val (car (eval history-var))))
2169 (set history-var (cons val (eval history-var))))
2170 (if (or (string= (nth 0 (eval history-var)) (nth 1 (eval history-var)))
2171 (string= (nth 0 (eval history-var)) ""))
2172 (set history-var (cdr (eval history-var))))
2173 ;; If the user enters nothing but the prev cmd wasn't viper-ex,
2174 ;; viper-command-argument, or `! shell-command', this probably means
2175 ;; that the user typed something then erased. Return "" in this case, not
2176 ;; the default---the default is too confusing in this case.
2177 (cond ((and (string= val "")
2178 (not (string= prompt "!")) ; was a `! shell-command'
2179 (not (memq last-command
2181 viper-command-argument
2185 ((string= val "") (or default ""))
2191 ;; insertion commands
2193 ;; Called when state changes from Insert Vi command mode.
2194 ;; Repeats the insertion command if Insert state was entered with prefix
2196 (defun viper-repeat-insert-command ()
2197 (let ((i-com (car viper-d-com))
2198 (val (nth 1 viper-d-com))
2199 (char (nth 2 viper-d-com)))
2200 (if (and val (> val 1)) ; first check that val is non-nil
2202 (setq viper-d-com (list i-com (1- val) ?r nil nil nil))
2204 (setq viper-d-com (list i-com val char nil nil nil))
2207 (defun viper-insert (arg)
2208 "Insert before point."
2210 (viper-set-complex-command-for-undo)
2211 (let ((val (viper-p-val arg))
2212 ;;(com (viper-getcom arg))
2214 (viper-set-destructive-command (list 'viper-insert val ?r nil nil nil))
2215 (if (eq viper-intermediate-command 'viper-repeat)
2216 (viper-loop val (viper-yank-last-insertion))
2217 (viper-change-state-to-insert))))
2219 (defun viper-append (arg)
2220 "Append after point."
2222 (viper-set-complex-command-for-undo)
2223 (let ((val (viper-p-val arg))
2224 ;;(com (viper-getcom arg))
2226 (viper-set-destructive-command (list 'viper-append val ?r nil nil nil))
2227 (if (not (eolp)) (forward-char))
2228 (if (eq viper-intermediate-command 'viper-repeat)
2229 (viper-loop val (viper-yank-last-insertion))
2230 (viper-change-state-to-insert))))
2232 (defun viper-Append (arg)
2233 "Append at end of line."
2235 (viper-set-complex-command-for-undo)
2236 (let ((val (viper-p-val arg))
2237 ;;(com (viper-getcom arg))
2239 (viper-set-destructive-command (list 'viper-Append val ?r nil nil nil))
2241 (if (eq viper-intermediate-command 'viper-repeat)
2242 (viper-loop val (viper-yank-last-insertion))
2243 (viper-change-state-to-insert))))
2245 (defun viper-Insert (arg)
2246 "Insert before first non-white."
2248 (viper-set-complex-command-for-undo)
2249 (let ((val (viper-p-val arg))
2250 ;;(com (viper-getcom arg))
2252 (viper-set-destructive-command (list 'viper-Insert val ?r nil nil nil))
2253 (back-to-indentation)
2254 (if (eq viper-intermediate-command 'viper-repeat)
2255 (viper-loop val (viper-yank-last-insertion))
2256 (viper-change-state-to-insert))))
2258 (defun viper-open-line (arg)
2261 (viper-set-complex-command-for-undo)
2262 (let ((val (viper-p-val arg))
2263 ;;(com (viper-getcom arg))
2265 (viper-set-destructive-command (list 'viper-open-line val ?r nil nil nil))
2266 (let ((col (current-indentation)))
2267 (if (eq viper-intermediate-command 'viper-repeat)
2271 (viper-indent-line col)
2272 (viper-yank-last-insertion))
2275 (viper-indent-line col)
2276 (viper-change-state-to-insert)))))
2278 (defun viper-Open-line (arg)
2281 (viper-set-complex-command-for-undo)
2282 (let ((val (viper-p-val arg))
2283 ;;(com (viper-getcom arg))
2285 (viper-set-destructive-command (list 'viper-Open-line val ?r nil nil nil))
2286 (let ((col (current-indentation)))
2287 (if (eq viper-intermediate-command 'viper-repeat)
2291 (viper-indent-line col)
2292 (viper-yank-last-insertion))
2295 (viper-indent-line col)
2296 (viper-change-state-to-insert)))))
2298 (defun viper-open-line-at-point (arg)
2299 "Open line at point."
2301 (viper-set-complex-command-for-undo)
2302 (let ((val (viper-p-val arg))
2303 ;;(com (viper-getcom arg))
2305 (viper-set-destructive-command
2306 (list 'viper-open-line-at-point val ?r nil nil nil))
2307 (if (eq viper-intermediate-command 'viper-repeat)
2310 (viper-yank-last-insertion))
2312 (viper-change-state-to-insert))))
2315 (defun viper-substitute (arg)
2316 "Substitute characters."
2318 (let ((val (viper-p-val arg))
2319 ;;(com (viper-getcom arg))
2323 (if (eq viper-intermediate-command 'viper-repeat)
2324 (viper-change-subr (mark t) (point))
2325 (viper-change (mark t) (point)))
2326 ;; com is set to ?r when we repeat this comand with dot
2327 (viper-set-destructive-command (list 'viper-substitute val ?r nil nil nil))
2330 ;; Command bound to S
2331 (defun viper-substitute-line (arg)
2334 (viper-set-complex-command-for-undo)
2335 (viper-line (cons arg ?C)))
2337 ;; Prepare for replace
2338 (defun viper-start-replace ()
2339 (setq viper-began-as-replace t
2340 viper-sitting-in-replace t
2341 viper-replace-chars-to-delete 0)
2343 'viper-after-change-functions 'viper-replace-mode-spy-after t 'local)
2345 'viper-before-change-functions 'viper-replace-mode-spy-before t 'local)
2346 ;; this will get added repeatedly, but no harm
2347 (add-hook 'after-change-functions 'viper-after-change-sentinel t)
2348 (add-hook 'before-change-functions 'viper-before-change-sentinel t)
2349 (viper-move-marker-locally
2350 'viper-last-posn-in-replace-region (viper-replace-start))
2352 'viper-post-command-hooks 'viper-replace-state-post-command-sentinel
2355 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel t 'local)
2356 ;; guard against a smartie who switched from R-replace to normal replace
2358 'viper-post-command-hooks 'viper-R-state-post-command-sentinel 'local)
2359 (if overwrite-mode (overwrite-mode -1))
2363 (defun viper-replace-mode-spy-before (beg end)
2364 (setq viper-replace-region-chars-deleted (viper-chars-in-region beg end))
2367 ;; Invoked as an after-change-function to calculate how many chars have to be
2368 ;; deleted. This function may be called several times within a single command,
2369 ;; if this command performs several separate buffer changes. Therefore, if
2370 ;; adds up the number of chars inserted and subtracts the number of chars
2372 (defun viper-replace-mode-spy-after (beg end length)
2373 (if (memq viper-intermediate-command
2374 '(dabbrev-expand hippie-expand repeating-insertion-from-ring))
2375 ;; Take special care of text insertion from insertion ring inside
2376 ;; replacement overlays.
2378 (setq viper-replace-chars-to-delete 0)
2379 (viper-move-marker-locally
2380 'viper-last-posn-in-replace-region (point)))
2382 (let* ((real-end (min end (viper-replace-end)))
2383 (column-shift (- (save-excursion (goto-char real-end)
2385 (save-excursion (goto-char beg)
2390 (setq chars-deleted viper-replace-region-chars-deleted))
2391 (setq viper-replace-region-chars-deleted 0)
2392 (setq viper-replace-chars-to-delete
2393 (+ viper-replace-chars-to-delete
2395 ;; if column shift is bigger, due to a TAB insertion, take
2396 ;; column-shift instead of the number of inserted chars
2397 (max (viper-chars-in-region beg real-end)
2398 ;; This test accounts for Chinese/Japanese/... chars,
2399 ;; which occupy 2 columns instead of one. If we use
2400 ;; column-shift here, we may delete two chars instead of
2401 ;; one when the user types one Chinese character.
2402 ;; Deleting two would be OK, if they were European chars,
2403 ;; but it is not OK if they are Chinese chars.
2404 ;; Since it is hard to
2405 ;; figure out which characters are being deleted in any
2406 ;; given region, we decided to treat Eastern and European
2407 ;; characters equally, even though Eastern chars may
2408 ;; occupy more columns.
2409 (if (memq this-command '(self-insert-command
2410 quoted-insert viper-insert-tab))
2413 ;; the number of deleted chars
2416 (viper-move-marker-locally
2417 'viper-last-posn-in-replace-region
2418 (max (if (> end (viper-replace-end)) (viper-replace-end) end)
2419 (or (marker-position viper-last-posn-in-replace-region)
2420 (viper-replace-start))
2426 ;; Delete stuff between viper-last-posn-in-replace-region and the end of
2427 ;; viper-replace-overlay-marker, if viper-last-posn-in-replace-region is within
2428 ;; the overlay and current point is before the end of the overlay.
2429 ;; Don't delete anything if current point is past the end of the overlay.
2430 (defun viper-finish-change ()
2432 'viper-after-change-functions 'viper-replace-mode-spy-after 'local)
2434 'viper-before-change-functions 'viper-replace-mode-spy-before 'local)
2436 'viper-post-command-hooks 'viper-replace-state-post-command-sentinel 'local)
2438 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel 'local)
2439 (viper-restore-cursor-color 'after-replace-mode)
2440 (setq viper-sitting-in-replace nil) ; just in case we'll need to know it
2442 (if (and viper-replace-overlay
2443 (viper-pos-within-region viper-last-posn-in-replace-region
2444 (viper-replace-start)
2445 (viper-replace-end))
2446 (< (point) (viper-replace-end)))
2448 viper-last-posn-in-replace-region (viper-replace-end))))
2450 (if (eq viper-current-state 'replace-state)
2451 (viper-downgrade-to-insert))
2452 ;; replace mode ended => nullify viper-last-posn-in-replace-region
2453 (viper-move-marker-locally 'viper-last-posn-in-replace-region nil)
2454 (viper-hide-replace-overlay)
2455 (viper-refresh-mode-line)
2456 (viper-put-string-on-kill-ring viper-last-replace-region)
2459 ;; Make STRING be the first element of the kill ring.
2460 (defun viper-put-string-on-kill-ring (string)
2461 (setq kill-ring (cons string kill-ring))
2462 (if (> (length kill-ring) kill-ring-max)
2463 (setcdr (nthcdr (1- kill-ring-max) kill-ring) nil))
2464 (setq kill-ring-yank-pointer kill-ring))
2466 (defun viper-finish-R-mode ()
2468 'viper-post-command-hooks 'viper-R-state-post-command-sentinel 'local)
2470 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel 'local)
2471 (viper-downgrade-to-insert))
2473 (defun viper-start-R-mode ()
2474 ;; Leave arg as 1, not t: XEmacs insists that it must be a pos number
2477 'viper-post-command-hooks 'viper-R-state-post-command-sentinel t 'local)
2479 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel t 'local)
2480 ;; guard against a smartie who switched from R-replace to normal replace
2482 'viper-post-command-hooks 'viper-replace-state-post-command-sentinel 'local)
2487 (defun viper-replace-state-exit-cmd ()
2488 "Binding for keys that cause Replace state to switch to Vi or to Insert.
2489 These keys are ESC, RET, and LineFeed"
2491 (if overwrite-mode ; if in replace mode invoked via 'R'
2492 (viper-finish-R-mode)
2493 (viper-finish-change))
2495 (if (eq this-command 'viper-intercept-ESC-key)
2496 (setq com 'viper-exit-insert-state)
2497 (viper-set-unread-command-events last-input-char)
2498 (setq com (key-binding (viper-read-key-sequence nil))))
2500 (condition-case conds
2501 (command-execute com)
2503 (viper-message-conditions conds)))
2505 (viper-hide-replace-overlay))
2508 (defun viper-replace-state-carriage-return ()
2509 "Carriage return in Viper replace state."
2511 ;; If Emacs start supporting overlay maps, as it currently supports
2512 ;; text-property maps, we could do away with viper-replace-minor-mode and
2513 ;; just have keymap attached to replace overlay. Then the "if part" of this
2514 ;; statement can be deleted.
2515 (if (or (< (point) (viper-replace-start))
2516 (> (point) (viper-replace-end)))
2517 (let (viper-replace-minor-mode com)
2518 (viper-set-unread-command-events last-input-char)
2519 (setq com (key-binding (read-key-sequence nil)))
2520 (condition-case conds
2521 (command-execute com)
2523 (viper-message-conditions conds))))
2524 (if (not viper-allow-multiline-replace-regions)
2525 (viper-replace-state-exit-cmd)
2526 (if (viper-same-line (point) (viper-replace-end))
2527 (viper-replace-state-exit-cmd)
2528 ;; delete the rest of line
2529 (delete-region (point) (viper-line-pos 'end))
2532 (if (eobp) (error "Last line in buffer")))
2533 ;; skip to the next line
2535 (back-to-indentation)
2539 ;; This is the function bound to 'R'---unlimited replace.
2540 ;; Similar to Emacs's own overwrite-mode.
2541 (defun viper-overwrite (arg)
2542 "Begin overwrite mode."
2544 (let ((val (viper-p-val arg))
2545 ;;(com (viper-getcom arg))
2547 (viper-set-destructive-command (list 'viper-overwrite val ?r nil nil nil))
2548 (if (eq viper-intermediate-command 'viper-repeat)
2550 ;; Viper saves inserted text in viper-last-insertion
2551 (setq len (length viper-last-insertion))
2552 (delete-char (min len (- (point-max) (point) 1)))
2553 (viper-loop val (viper-yank-last-insertion)))
2554 (setq last-command 'viper-overwrite)
2555 (viper-set-complex-command-for-undo)
2556 (viper-set-replace-overlay (point) (viper-line-pos 'end))
2557 (viper-change-state-to-replace)
2563 (defun viper-line (arg)
2564 (let ((val (car arg))
2566 (viper-move-marker-locally 'viper-com-point (point))
2568 (viper-next-line-carefully (1- val)))
2569 ;; the following ensures that dd, cc, D, yy will do the right thing on the
2570 ;; last line of buffer when this line has no \n.
2571 (viper-add-newline-at-eob-if-necessary)
2572 (viper-execute-com 'viper-line val com))
2573 (if (and (eobp) (not (bobp))) (forward-line -1))
2576 (defun viper-yank-line (arg)
2577 "Yank ARG lines (in Vi's sense)."
2579 (let ((val (viper-p-val arg)))
2580 (viper-line (cons val ?Y))))
2585 (defun viper-region (arg)
2586 "Execute command on a region."
2588 (let ((val (viper-P-val arg))
2589 (com (viper-getcom arg)))
2590 (viper-move-marker-locally 'viper-com-point (point))
2591 (exchange-point-and-mark)
2592 (viper-execute-com 'viper-region val com)))
2594 (defun viper-Region (arg)
2595 "Execute command on a Region."
2597 (let ((val (viper-P-val arg))
2598 (com (viper-getCom arg)))
2599 (viper-move-marker-locally 'viper-com-point (point))
2600 (exchange-point-and-mark)
2601 (viper-execute-com 'viper-Region val com)))
2603 (defun viper-replace-char (arg)
2604 "Replace the following ARG chars by the character read."
2606 (if (and (eolp) (bolp)) (error "No character to replace here"))
2607 (let ((val (viper-p-val arg))
2608 (com (viper-getcom arg)))
2609 (viper-replace-char-subr com val)
2610 (if (and (eolp) (not (bolp))) (forward-char 1))
2611 (setq viper-this-command-keys
2612 (format "%sr" (if (integerp arg) arg "")))
2613 (viper-set-destructive-command
2614 (list 'viper-replace-char val ?r nil viper-d-char nil))
2617 (defun viper-replace-char-subr (com arg)
2618 (let ((inhibit-quit t)
2620 (viper-set-complex-command-for-undo)
2621 (or (eq viper-intermediate-command 'viper-repeat)
2622 (viper-special-read-and-insert-char))
2625 (setq char (if com viper-d-char (viper-char-at-pos 'backward)))
2627 (if com (insert char))
2629 (setq viper-d-char char)
2631 (viper-loop (1- (if (> arg 0) arg (- arg)))
2640 ;; basic cursor movement. j, k, l, h commands.
2642 (defun viper-forward-char (arg)
2643 "Move point right ARG characters (left if ARG negative).
2644 On reaching end of line, stop and signal error."
2646 (viper-leave-region-active)
2647 (let ((val (viper-p-val arg))
2648 (com (viper-getcom arg)))
2649 (if com (viper-move-marker-locally 'viper-com-point (point)))
2650 (if viper-ex-style-motion
2652 ;; the boundary condition check gets weird here because
2653 ;; forward-char may be the parameter of a delete, and 'dl' works
2654 ;; just like 'x' for the last char on a line, so we have to allow
2655 ;; the forward motion before the 'viper-execute-com', but, of
2656 ;; course, 'dl' doesn't work on an empty line, so we have to
2657 ;; catch that condition before 'viper-execute-com'
2658 (if (and (eolp) (bolp)) (error "") (forward-char val))
2659 (if com (viper-execute-com 'viper-forward-char val com))
2660 (if (eolp) (progn (backward-char 1) (error ""))))
2662 (if com (viper-execute-com 'viper-forward-char val com)))))
2665 (defun viper-backward-char (arg)
2666 "Move point left ARG characters (right if ARG negative).
2667 On reaching beginning of line, stop and signal error."
2669 (viper-leave-region-active)
2670 (let ((val (viper-p-val arg))
2671 (com (viper-getcom arg)))
2672 (if com (viper-move-marker-locally 'viper-com-point (point)))
2673 (if viper-ex-style-motion
2675 (if (bolp) (error "") (backward-char val))
2676 (if com (viper-execute-com 'viper-backward-char val com)))
2678 (if com (viper-execute-com 'viper-backward-char val com)))))
2681 ;; Like forward-char, but doesn't move at end of buffer.
2682 ;; Returns distance traveled
2683 ;; (positive or 0, if arg positive; negative if arg negative).
2684 (defun viper-forward-char-carefully (&optional arg)
2685 (setq arg (or arg 1))
2690 (if (< (point) pt) ; arg was negative
2691 (- (viper-chars-in-region pt (point)))
2692 (viper-chars-in-region pt (point)))))
2695 ;; Like backward-char, but doesn't move at beg of buffer.
2696 ;; Returns distance traveled
2697 ;; (negative or 0, if arg positive; positive if arg negative).
2698 (defun viper-backward-char-carefully (&optional arg)
2699 (setq arg (or arg 1))
2704 (if (> (point) pt) ; arg was negative
2705 (viper-chars-in-region pt (point))
2706 (- (viper-chars-in-region pt (point))))))
2708 (defun viper-next-line-carefully (arg)
2717 ;; Words are formed from alpha's and nonalphas - <sp>,\t\n are separators for
2718 ;; word movement. When executed with a destructive command, \n is usually left
2719 ;; untouched for the last word. Viper uses syntax table to determine what is a
2720 ;; word and what is a separator. However, \n is always a separator. Also, if
2721 ;; viper-syntax-preference is 'vi, then `_' is part of the word.
2724 (defun viper-skip-separators (forward)
2727 (viper-skip-all-separators-forward 'within-line)
2728 (if (looking-at "\n")
2731 (viper-skip-all-separators-forward 'within-line))))
2732 ;; check for eob and white space before it. move off of eob
2733 (if (and (eobp) (save-excursion
2734 (viper-backward-char-carefully)
2735 (viper-looking-at-separator)))
2736 (viper-backward-char-carefully))
2737 (viper-skip-all-separators-backward 'within-line)
2738 (viper-backward-char-carefully)
2739 (if (looking-at "\n")
2740 (viper-skip-all-separators-backward 'within-line)
2741 (or (viper-looking-at-separator) (forward-char)))))
2744 (defun viper-forward-word-kernel (val)
2746 (cond ((viper-looking-at-alpha)
2747 (viper-skip-alpha-forward "_")
2748 (viper-skip-separators t))
2749 ((viper-looking-at-separator)
2750 (viper-skip-separators t))
2751 ((not (viper-looking-at-alphasep))
2752 (viper-skip-nonalphasep-forward)
2753 (viper-skip-separators t)))
2754 (setq val (1- val))))
2756 ;; first skip non-newline separators backward, then skip \n. Then, if TWICE is
2757 ;; non-nil, skip non-\n back again, but don't overshoot the limit LIM.
2758 (defun viper-separator-skipback-special (twice lim)
2759 (let ((prev-char (viper-char-at-pos 'backward))
2760 (saved-point (point)))
2761 ;; skip non-newline separators backward
2762 (while (and (not (viper-memq-char prev-char '(nil \n)))
2764 ;; must be non-newline separator
2765 (if (eq viper-syntax-preference 'strict-vi)
2766 (viper-memq-char prev-char '(?\ ?\t))
2767 (viper-memq-char (char-syntax prev-char) '(?\ ?-))))
2768 (viper-backward-char-carefully)
2769 (setq prev-char (viper-char-at-pos 'backward)))
2771 (if (and (< lim (point)) (eq prev-char ?\n))
2773 ;; If we skipped to the next word and the prefix of this line doesn't
2774 ;; consist of separators preceded by a newline, then don't skip backwards
2776 (goto-char saved-point))
2777 (setq prev-char (viper-char-at-pos 'backward))
2779 ;; skip again, but make sure we don't overshoot the limit
2781 (while (and (not (viper-memq-char prev-char '(nil \n)))
2783 ;; must be non-newline separator
2784 (if (eq viper-syntax-preference 'strict-vi)
2785 (viper-memq-char prev-char '(?\ ?\t))
2786 (viper-memq-char (char-syntax prev-char) '(?\ ?-))))
2787 (viper-backward-char-carefully)
2788 (setq prev-char (viper-char-at-pos 'backward))))
2791 (viper-forward-char-carefully))
2795 (defun viper-forward-word (arg)
2798 (viper-leave-region-active)
2799 (let ((val (viper-p-val arg))
2800 (com (viper-getcom arg)))
2801 (if com (viper-move-marker-locally 'viper-com-point (point)))
2802 (viper-forward-word-kernel val)
2805 (cond ((viper-char-equal com ?c)
2806 (viper-separator-skipback-special 'twice viper-com-point))
2807 ;; Yank words including the whitespace, but not newline
2808 ((viper-char-equal com ?y)
2809 (viper-separator-skipback-special nil viper-com-point))
2810 ((viper-dotable-command-p com)
2811 (viper-separator-skipback-special nil viper-com-point)))
2812 (viper-execute-com 'viper-forward-word val com)))
2816 (defun viper-forward-Word (arg)
2817 "Forward word delimited by white characters."
2819 (viper-leave-region-active)
2820 (let ((val (viper-p-val arg))
2821 (com (viper-getcom arg)))
2822 (if com (viper-move-marker-locally 'viper-com-point (point)))
2824 (viper-skip-nonseparators 'forward)
2825 (viper-skip-separators t))
2827 (cond ((viper-char-equal com ?c)
2828 (viper-separator-skipback-special 'twice viper-com-point))
2829 ;; Yank words including the whitespace, but not newline
2830 ((viper-char-equal com ?y)
2831 (viper-separator-skipback-special nil viper-com-point))
2832 ((viper-dotable-command-p com)
2833 (viper-separator-skipback-special nil viper-com-point)))
2834 (viper-execute-com 'viper-forward-Word val com)))))
2837 ;; this is a bit different from Vi, but Vi's end of word
2838 ;; makes no sense whatsoever
2839 (defun viper-end-of-word-kernel ()
2840 (if (viper-end-of-word-p) (forward-char))
2841 (if (viper-looking-at-separator)
2842 (viper-skip-all-separators-forward))
2844 (cond ((viper-looking-at-alpha) (viper-skip-alpha-forward "_"))
2845 ((not (viper-looking-at-alphasep)) (viper-skip-nonalphasep-forward)))
2846 (viper-backward-char-carefully))
2848 (defun viper-end-of-word-p ()
2851 (cond ((viper-looking-at-alpha)
2853 (not (viper-looking-at-alpha)))
2854 ((not (viper-looking-at-alphasep))
2856 (viper-looking-at-alphasep))))))
2859 (defun viper-end-of-word (arg &optional careful)
2860 "Move point to end of current word."
2862 (viper-leave-region-active)
2863 (let ((val (viper-p-val arg))
2864 (com (viper-getcom arg)))
2865 (if com (viper-move-marker-locally 'viper-com-point (point)))
2866 (viper-loop val (viper-end-of-word-kernel))
2870 (viper-execute-com 'viper-end-of-word val com)))))
2872 (defun viper-end-of-Word (arg)
2873 "Forward to end of word delimited by white character."
2875 (viper-leave-region-active)
2876 (let ((val (viper-p-val arg))
2877 (com (viper-getcom arg)))
2878 (if com (viper-move-marker-locally 'viper-com-point (point)))
2880 (viper-end-of-word-kernel)
2881 (viper-skip-nonseparators 'forward)
2886 (viper-execute-com 'viper-end-of-Word val com)))))
2888 (defun viper-backward-word-kernel (val)
2890 (viper-backward-char-carefully)
2891 (cond ((viper-looking-at-alpha)
2892 (viper-skip-alpha-backward "_"))
2893 ((viper-looking-at-separator)
2895 (viper-skip-separators nil)
2896 (viper-backward-char-carefully)
2897 (cond ((viper-looking-at-alpha)
2898 (viper-skip-alpha-backward "_"))
2899 ((not (viper-looking-at-alphasep))
2900 (viper-skip-nonalphasep-backward))
2901 ((bobp)) ; could still be at separator, but at beg of buffer
2902 (t (forward-char))))
2903 ((not (viper-looking-at-alphasep))
2904 (viper-skip-nonalphasep-backward)))
2905 (setq val (1- val))))
2907 (defun viper-backward-word (arg)
2910 (viper-leave-region-active)
2911 (let ((val (viper-p-val arg))
2912 (com (viper-getcom arg)))
2915 (if (setq i (save-excursion (backward-char) (looking-at "\n")))
2917 (viper-move-marker-locally 'viper-com-point (point))
2918 (if i (forward-char))))
2919 (viper-backward-word-kernel val)
2920 (if com (viper-execute-com 'viper-backward-word val com))))
2922 (defun viper-backward-Word (arg)
2923 "Backward word delimited by white character."
2925 (viper-leave-region-active)
2926 (let ((val (viper-p-val arg))
2927 (com (viper-getcom arg)))
2930 (if (setq i (save-excursion (backward-char) (looking-at "\n")))
2932 (viper-move-marker-locally 'viper-com-point (point))
2933 (if i (forward-char))))
2935 (viper-skip-separators nil) ; nil means backward here
2936 (viper-skip-nonseparators 'backward))
2937 (if com (viper-execute-com 'viper-backward-Word val com))))
2943 (defun viper-beginning-of-line (arg)
2944 "Go to beginning of line."
2946 (viper-leave-region-active)
2947 (let ((val (viper-p-val arg))
2948 (com (viper-getcom arg)))
2949 (if com (viper-move-marker-locally 'viper-com-point (point)))
2950 (beginning-of-line val)
2951 (if com (viper-execute-com 'viper-beginning-of-line val com))))
2953 (defun viper-bol-and-skip-white (arg)
2954 "Beginning of line at first non-white character."
2956 (viper-leave-region-active)
2957 (let ((val (viper-p-val arg))
2958 (com (viper-getcom arg)))
2959 (if com (viper-move-marker-locally 'viper-com-point (point)))
2960 (forward-to-indentation (1- val))
2961 (if com (viper-execute-com 'viper-bol-and-skip-white val com))))
2963 (defun viper-goto-eol (arg)
2964 "Go to end of line."
2966 (viper-leave-region-active)
2967 (let ((val (viper-p-val arg))
2968 (com (viper-getcom arg)))
2969 (if com (viper-move-marker-locally 'viper-com-point (point)))
2971 (if com (viper-execute-com 'viper-goto-eol val com))
2972 (if viper-ex-style-motion
2973 (if (and (eolp) (not (bolp))
2974 ;; a fix for viper-change-to-eol
2975 (not (equal viper-current-state 'insert-state)))
2980 (defun viper-goto-col (arg)
2981 "Go to ARG's column."
2983 (viper-leave-region-active)
2984 (let ((val (viper-p-val arg))
2985 (com (viper-getcom arg))
2988 (viper-chars-in-region
2989 (viper-line-pos 'start) (viper-line-pos 'end)))
2990 (if com (viper-move-marker-locally 'viper-com-point (point)))
2992 (forward-char (1- (min line-len val)))
2993 (while (> (current-column) (1- val))
2995 (if com (viper-execute-com 'viper-goto-col val com))
2998 (if (> val (current-column)) (error "")))
3002 (defun viper-next-line (arg)
3005 (viper-leave-region-active)
3006 (let ((val (viper-p-val arg))
3007 (com (viper-getCom arg)))
3008 (if com (viper-move-marker-locally 'viper-com-point (point)))
3010 (if viper-ex-style-motion
3011 (if (and (eolp) (not (bolp))) (backward-char 1)))
3012 (setq this-command 'next-line)
3013 (if com (viper-execute-com 'viper-next-line val com))))
3015 (defun viper-next-line-at-bol (arg)
3016 "Next line at beginning of line."
3018 (viper-leave-region-active)
3021 (if (eobp) (error "Last line in buffer")))
3022 (let ((val (viper-p-val arg))
3023 (com (viper-getCom arg)))
3024 (if com (viper-move-marker-locally 'viper-com-point (point)))
3026 (back-to-indentation)
3027 (if com (viper-execute-com 'viper-next-line-at-bol val com))))
3030 (defun viper-previous-line (arg)
3031 "Go to previous line."
3033 (viper-leave-region-active)
3034 (let ((val (viper-p-val arg))
3035 (com (viper-getCom arg)))
3036 (if com (viper-move-marker-locally 'viper-com-point (point)))
3038 (if viper-ex-style-motion
3039 (if (and (eolp) (not (bolp))) (backward-char 1)))
3040 (setq this-command 'previous-line)
3041 (if com (viper-execute-com 'viper-previous-line val com))))
3044 (defun viper-previous-line-at-bol (arg)
3045 "Previous line at beginning of line."
3047 (viper-leave-region-active)
3050 (if (bobp) (error "First line in buffer")))
3051 (let ((val (viper-p-val arg))
3052 (com (viper-getCom arg)))
3053 (if com (viper-move-marker-locally 'viper-com-point (point)))
3054 (forward-line (- val))
3055 (back-to-indentation)
3056 (if com (viper-execute-com 'viper-previous-line val com))))
3058 (defun viper-change-to-eol (arg)
3059 "Change to end of line."
3061 (viper-goto-eol (cons arg ?c)))
3063 (defun viper-kill-line (arg)
3066 (viper-goto-eol (cons arg ?d)))
3068 (defun viper-erase-line (arg)
3071 (viper-beginning-of-line (cons arg ?d)))
3076 (defun viper-goto-line (arg)
3077 "Go to ARG's line. Without ARG go to end of buffer."
3079 (let ((val (viper-P-val arg))
3080 (com (viper-getCom arg)))
3081 (viper-move-marker-locally 'viper-com-point (point))
3082 (viper-deactivate-mark)
3085 (goto-char (point-max))
3086 (goto-char (point-min))
3087 (forward-line (1- val)))
3089 ;; positioning is done twice: before and after command execution
3090 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3091 (back-to-indentation)
3093 (if com (viper-execute-com 'viper-goto-line val com))
3095 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3096 (back-to-indentation)
3099 ;; Find ARG's occurrence of CHAR on the current line.
3100 ;; If FORWARD then search is forward, otherwise backward. OFFSET is used to
3101 ;; adjust point after search.
3102 (defun viper-find-char (arg char forward offset)
3103 (or (char-or-string-p char) (error ""))
3104 (let ((arg (if forward arg (- arg)))
3105 (cmd (if (eq viper-intermediate-command 'viper-repeat)
3107 (viper-array-to-string (this-command-keys))))
3108 point region-beg region-end)
3111 (if (> arg 0) ; forward
3113 (setq region-beg (point))
3114 (if viper-allow-multiline-replace-regions
3115 (viper-forward-paragraph 1)
3117 (setq region-end (point)))
3118 (setq region-end (point))
3119 (if viper-allow-multiline-replace-regions
3120 (viper-backward-paragraph 1)
3121 (beginning-of-line))
3122 (setq region-beg (point)))
3123 (if (or (and (< arg 0)
3124 (< (- region-end region-beg)
3125 (if viper-allow-multiline-replace-regions
3129 (< (- region-end region-beg)
3130 (if viper-allow-multiline-replace-regions
3133 (error "Command `%s': At %s of %s"
3135 (if (> arg 0) "end" "beginning")
3136 (if viper-allow-multiline-replace-regions
3137 "paragraph" "line")))
3138 (narrow-to-region region-beg region-end)
3139 ;; if arg > 0, point is forwarded before search.
3140 (if (> arg 0) (goto-char (1+ (point-min)))
3141 (goto-char (point-max)))
3142 (if (let ((case-fold-search nil))
3143 (search-forward (char-to-string char) nil 0 arg))
3144 (setq point (point))
3145 (error "Command `%s': `%c' not found" cmd char))))
3148 (backward-char (if offset 2 1))
3149 (forward-char (if offset 1 0)))))
3151 (defun viper-find-char-forward (arg)
3152 "Find char on the line.
3153 If called interactively read the char to find from the terminal, and if
3154 called from viper-repeat, the char last used is used. This behavior is
3155 controlled by the sign of prefix numeric value."
3157 (let ((val (viper-p-val arg))
3158 (com (viper-getcom arg))
3159 (cmd-representation (nth 5 viper-d-com)))
3161 ;; this means that the function was called interactively
3162 (setq viper-f-char (read-char)
3165 ;; viper-repeat --- set viper-F-char from command-keys
3166 (setq viper-F-char (if (stringp cmd-representation)
3167 (viper-seq-last-elt cmd-representation)
3169 viper-f-char viper-F-char)
3171 (if com (viper-move-marker-locally 'viper-com-point (point)))
3173 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) t nil)
3177 (setq viper-F-char viper-f-char) ; set new viper-F-char
3179 (viper-execute-com 'viper-find-char-forward val com)))))
3181 (defun viper-goto-char-forward (arg)
3182 "Go up to char ARG forward on line."
3184 (let ((val (viper-p-val arg))
3185 (com (viper-getcom arg))
3186 (cmd-representation (nth 5 viper-d-com)))
3188 ;; this means that the function was called interactively
3189 (setq viper-f-char (read-char)
3192 ;; viper-repeat --- set viper-F-char from command-keys
3193 (setq viper-F-char (if (stringp cmd-representation)
3194 (viper-seq-last-elt cmd-representation)
3196 viper-f-char viper-F-char)
3198 (if com (viper-move-marker-locally 'viper-com-point (point)))
3200 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) t t)
3204 (setq viper-F-char viper-f-char) ; set new viper-F-char
3206 (viper-execute-com 'viper-goto-char-forward val com)))))
3208 (defun viper-find-char-backward (arg)
3209 "Find char ARG on line backward."
3211 (let ((val (viper-p-val arg))
3212 (com (viper-getcom arg))
3213 (cmd-representation (nth 5 viper-d-com)))
3215 ;; this means that the function was called interactively
3216 (setq viper-f-char (read-char)
3219 ;; viper-repeat --- set viper-F-char from command-keys
3220 (setq viper-F-char (if (stringp cmd-representation)
3221 (viper-seq-last-elt cmd-representation)
3223 viper-f-char viper-F-char)
3225 (if com (viper-move-marker-locally 'viper-com-point (point)))
3227 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) nil nil)
3231 (setq viper-F-char viper-f-char) ; set new viper-F-char
3232 (viper-execute-com 'viper-find-char-backward val com)))))
3234 (defun viper-goto-char-backward (arg)
3235 "Go up to char ARG backward on line."
3237 (let ((val (viper-p-val arg))
3238 (com (viper-getcom arg))
3239 (cmd-representation (nth 5 viper-d-com)))
3241 ;; this means that the function was called interactively
3242 (setq viper-f-char (read-char)
3245 ;; viper-repeat --- set viper-F-char from command-keys
3246 (setq viper-F-char (if (stringp cmd-representation)
3247 (viper-seq-last-elt cmd-representation)
3249 viper-f-char viper-F-char)
3251 (if com (viper-move-marker-locally 'viper-com-point (point)))
3253 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) nil t)
3257 (setq viper-F-char viper-f-char) ; set new viper-F-char
3258 (viper-execute-com 'viper-goto-char-backward val com)))))
3260 (defun viper-repeat-find (arg)
3261 "Repeat previous find command."
3263 (let ((val (viper-p-val arg))
3264 (com (viper-getcom arg)))
3265 (viper-deactivate-mark)
3266 (if com (viper-move-marker-locally 'viper-com-point (point)))
3267 (viper-find-char val viper-f-char viper-f-forward viper-f-offset)
3270 (if viper-f-forward (forward-char))
3271 (viper-execute-com 'viper-repeat-find val com)))))
3273 (defun viper-repeat-find-opposite (arg)
3274 "Repeat previous find command in the opposite direction."
3276 (let ((val (viper-p-val arg))
3277 (com (viper-getcom arg)))
3278 (viper-deactivate-mark)
3279 (if com (viper-move-marker-locally 'viper-com-point (point)))
3280 (viper-find-char val viper-f-char (not viper-f-forward) viper-f-offset)
3283 (if viper-f-forward (forward-char))
3284 (viper-execute-com 'viper-repeat-find-opposite val com)))))
3287 ;; window scrolling etc.
3289 (defun viper-window-top (arg)
3290 "Go to home window line."
3292 (let ((val (viper-p-val arg))
3293 (com (viper-getCom arg)))
3294 (viper-leave-region-active)
3295 (if com (viper-move-marker-locally 'viper-com-point (point)))
3297 (move-to-window-line (1- val))
3299 ;; positioning is done twice: before and after command execution
3300 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3301 (back-to-indentation)
3303 (if com (viper-execute-com 'viper-window-top val com))
3305 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3306 (back-to-indentation)
3309 (defun viper-window-middle (arg)
3310 "Go to middle window line."
3312 (let ((val (viper-p-val arg))
3313 (com (viper-getCom arg)))
3314 (viper-leave-region-active)
3315 (if com (viper-move-marker-locally 'viper-com-point (point)))
3317 (move-to-window-line (+ (/ (1- (window-height)) 2) (1- val)))
3319 ;; positioning is done twice: before and after command execution
3320 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3321 (back-to-indentation)
3323 (if com (viper-execute-com 'viper-window-middle val com))
3325 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3326 (back-to-indentation)
3329 (defun viper-window-bottom (arg)
3330 "Go to last window line."
3332 (let ((val (viper-p-val arg))
3333 (com (viper-getCom arg)))
3334 (viper-leave-region-active)
3335 (if com (viper-move-marker-locally 'viper-com-point (point)))
3337 (move-to-window-line (- val))
3339 ;; positioning is done twice: before and after command execution
3340 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3341 (back-to-indentation)
3343 (if com (viper-execute-com 'viper-window-bottom val com))
3345 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3346 (back-to-indentation)
3349 (defun viper-line-to-top (arg)
3350 "Put current line on the home line."
3352 (recenter (1- arg)))
3354 (defun viper-line-to-middle (arg)
3355 "Put current line on the middle line."
3357 (recenter (+ (1- arg) (/ (1- (window-height)) 2))))
3359 (defun viper-line-to-bottom (arg)
3360 "Put current line on the last line."
3362 (recenter (- (window-height) (1+ arg))))
3364 ;; If point is within viper-search-scroll-threshold of window top or bottom,
3365 ;; scroll up or down 1/7 of window height, depending on whether we are at the
3366 ;; bottom or at the top of the window. This function is called by viper-search
3367 ;; (which is called from viper-search-forward/backward/next). If the value of
3368 ;; viper-search-scroll-threshold is negative - don't scroll.
3369 (defun viper-adjust-window ()
3370 (let ((win-height (viper-cond-compile-for-xemacs-or-emacs
3371 (window-displayed-height) ; xemacs
3373 (1- (window-height)) ; adjust for modeline
3376 at-top-p at-bottom-p
3377 min-scroll direction)
3379 (move-to-window-line 0) ; top
3381 (<= (count-lines pt (point))
3382 viper-search-scroll-threshold))
3383 (move-to-window-line -1) ; bottom
3385 (<= (count-lines pt (point)) viper-search-scroll-threshold))
3387 (cond (at-top-p (setq min-scroll (1- viper-search-scroll-threshold)
3389 (at-bottom-p (setq min-scroll (1+ viper-search-scroll-threshold)
3393 (* (max min-scroll (/ win-height 7)) direction)))
3398 ;; must correct this to only match ( to ) etc. On the other hand
3399 ;; it is good that paren match gets confused, because that way you
3400 ;; catch _all_ imbalances.
3402 (defun viper-paren-match (arg)
3403 "Go to the matching parenthesis."
3405 (viper-leave-region-active)
3406 (let ((com (viper-getcom arg))
3407 (parse-sexp-ignore-comments viper-parse-sexp-ignore-comments)
3410 (if (or (> arg 99) (< arg 1))
3411 (error "Prefix must be between 1 and 99")
3413 (if (> (point-max) 80000)
3414 (* (/ (point-max) 100) arg)
3415 (/ (* (point-max) arg) 100)))
3416 (back-to-indentation))
3417 (let (beg-lim end-lim)
3418 (if (and (eolp) (not (bolp))) (forward-char -1))
3419 (if (not (looking-at "[][(){}]"))
3420 (setq anchor-point (point)))
3423 (setq beg-lim (point))
3425 (setq end-lim (point)))
3426 (cond ((re-search-forward "[][(){}]" end-lim t)
3428 ((re-search-backward "[][(){}]" beg-lim t))
3430 (error "No matching character on line"))))
3431 (cond ((looking-at "[\(\[{]")
3432 (if com (viper-move-marker-locally 'viper-com-point (point)))
3435 (viper-execute-com 'viper-paren-match nil com)
3440 (viper-move-marker-locally 'viper-com-point anchor-point)
3442 (viper-execute-com 'viper-paren-match nil com)
3444 ((looking-at "[])}]")
3446 (if com (viper-move-marker-locally 'viper-com-point (point)))
3448 (if com (viper-execute-com 'viper-paren-match nil com)))
3451 (defun viper-toggle-parse-sexp-ignore-comments ()
3453 (setq viper-parse-sexp-ignore-comments
3454 (not viper-parse-sexp-ignore-comments))
3456 "From now on, `%%' will %signore parentheses inside comment fields"
3457 (if viper-parse-sexp-ignore-comments "" "NOT "))))
3460 ;; sentence, paragraph and heading
3462 (defun viper-forward-sentence (arg)
3465 (or (eq last-command this-command)
3467 (let ((val (viper-p-val arg))
3468 (com (viper-getcom arg)))
3469 (if com (viper-move-marker-locally 'viper-com-point (point)))
3470 (forward-sentence val)
3471 (if com (viper-execute-com 'viper-forward-sentence nil com))))
3473 (defun viper-backward-sentence (arg)
3474 "Backward sentence."
3476 (or (eq last-command this-command)
3478 (let ((val (viper-p-val arg))
3479 (com (viper-getcom arg)))
3480 (if com (viper-move-marker-locally 'viper-com-point (point)))
3481 (backward-sentence val)
3482 (if com (viper-execute-com 'viper-backward-sentence nil com))))
3484 (defun viper-forward-paragraph (arg)
3485 "Forward paragraph."
3487 (or (eq last-command this-command)
3489 (let ((val (viper-p-val arg))
3490 ;; if you want d} operate on whole lines, change viper-getcom to
3491 ;; viper-getCom below
3492 (com (viper-getcom arg)))
3493 (if com (viper-move-marker-locally 'viper-com-point (point)))
3494 (forward-paragraph val)
3498 (viper-execute-com 'viper-forward-paragraph nil com)))))
3500 (defun viper-backward-paragraph (arg)
3501 "Backward paragraph."
3503 (or (eq last-command this-command)
3505 (let ((val (viper-p-val arg))
3506 ;; if you want d{ operate on whole lines, change viper-getcom to
3507 ;; viper-getCom below
3508 (com (viper-getcom arg)))
3509 (if com (viper-move-marker-locally 'viper-com-point (point)))
3510 (backward-paragraph val)
3514 (viper-execute-com 'viper-backward-paragraph nil com)
3515 (backward-char 1)))))
3517 ;; should be mode-specific
3518 (defun viper-prev-heading (arg)
3520 (let ((val (viper-p-val arg))
3521 (com (viper-getCom arg)))
3522 (if com (viper-move-marker-locally 'viper-com-point (point)))
3523 (re-search-backward viper-heading-start nil t val)
3524 (goto-char (match-beginning 0))
3525 (if com (viper-execute-com 'viper-prev-heading nil com))))
3527 (defun viper-heading-end (arg)
3529 (let ((val (viper-p-val arg))
3530 (com (viper-getCom arg)))
3531 (if com (viper-move-marker-locally 'viper-com-point (point)))
3532 (re-search-forward viper-heading-end nil t val)
3533 (goto-char (match-beginning 0))
3534 (if com (viper-execute-com 'viper-heading-end nil com))))
3536 (defun viper-next-heading (arg)
3538 (let ((val (viper-p-val arg))
3539 (com (viper-getCom arg)))
3540 (if com (viper-move-marker-locally 'viper-com-point (point)))
3542 (re-search-forward viper-heading-start nil t val)
3543 (goto-char (match-beginning 0))
3544 (if com (viper-execute-com 'viper-next-heading nil com))))
3549 (defun viper-scroll-screen (arg)
3550 "Scroll to next screen."
3556 (setq arg (1- arg)))
3559 (setq arg (1+ arg))))
3563 (message "End of buffer")
3564 (goto-char (point-max)))
3565 (message "Beginning of buffer")
3566 (goto-char (point-min))))
3569 (defun viper-scroll-screen-back (arg)
3570 "Scroll to previous screen."
3572 (viper-scroll-screen (- arg)))
3574 (defun viper-scroll-down (arg)
3575 "Pull down half screen."
3579 (scroll-down (/ (window-height) 2))
3582 (message "Beginning of buffer")
3583 (goto-char (point-min)))))
3585 (defun viper-scroll-down-one (arg)
3586 "Scroll up one line."
3590 (defun viper-scroll-up (arg)
3591 "Pull up half screen."
3595 (scroll-up (/ (window-height) 2))
3598 (message "End of buffer")
3599 (goto-char (point-max)))))
3601 (defun viper-scroll-up-one (arg)
3602 "Scroll down one line."
3609 (defun viper-if-string (prompt)
3610 (if (memq viper-intermediate-command
3611 '(viper-command-argument viper-digit-argument viper-repeat))
3612 (setq viper-this-command-keys (this-command-keys)))
3613 (let ((s (viper-read-string-with-history
3616 'viper-search-history
3617 (car viper-search-history))))
3618 (if (not (string= s ""))
3619 (setq viper-s-string s))))
3622 (defun viper-toggle-search-style (arg)
3623 "Toggle the value of viper-case-fold-search/viper-re-search.
3624 Without prefix argument, will ask which search style to toggle. With prefix
3625 arg 1,toggles viper-case-fold-search; with arg 2 toggles viper-re-search.
3627 Although this function is bound to \\[viper-toggle-search-style], the most
3628 convenient way to use it is to bind `//' to the macro
3629 `1 M-x viper-toggle-search-style' and `///' to
3630 `2 M-x viper-toggle-search-style'. In this way, hitting `//' quickly will
3631 toggle case-fold-search and hitting `/' three times witth toggle regexp
3632 search. Macros are more convenient in this case because they don't affect
3633 the Emacs binding of `/'."
3636 (cond ((or (eq arg 1)
3638 (y-or-n-p (format "Search style: '%s'. Want '%s'? "
3639 (if viper-case-fold-search
3640 "case-insensitive" "case-sensitive")
3641 (if viper-case-fold-search
3643 "case-insensitive")))))
3644 (setq viper-case-fold-search (null viper-case-fold-search))
3645 (if viper-case-fold-search
3646 (setq msg "Search becomes case-insensitive")
3647 (setq msg "Search becomes case-sensitive")))
3650 (y-or-n-p (format "Search style: '%s'. Want '%s'? "
3652 "regexp-search" "vanilla-search")
3655 "regexp-search")))))
3656 (setq viper-re-search (null viper-re-search))
3658 (setq msg "Search becomes regexp-style")
3659 (setq msg "Search becomes vanilla-style")))
3661 (setq msg "Search style remains unchanged")))
3664 (defun viper-set-searchstyle-toggling-macros (unset &optional major-mode)
3665 "Set the macros for toggling the search style in Viper's vi-state.
3666 The macro that toggles case sensitivity is bound to `//', and the one that
3667 toggles regexp search is bound to `///'.
3668 With a prefix argument, this function unsets the macros.
3669 If MAJOR-MODE is set, set the macros only in that major mode."
3672 (if (and major-mode (symbolp major-mode))
3673 (setq scope major-mode)
3678 ;; toggle case sensitivity in search
3679 (viper-record-kbd-macro
3681 [1 (meta x) v i p e r - t o g g l e - s e a r c h - s t y l e return]
3683 ;; toggle regexp/vanila search
3684 (viper-record-kbd-macro
3686 [2 (meta x) v i p e r - t o g g l e - s e a r c h - s t y l e return]
3690 "// and /// now toggle case-sensitivity and regexp search")))
3691 (viper-unrecord-kbd-macro "//" 'vi-state)
3693 (viper-unrecord-kbd-macro "///" 'vi-state)))
3697 (defun viper-set-parsing-style-toggling-macro (unset)
3698 "Set `%%%' to be a macro that toggles whether comment fields should be parsed for matching parentheses.
3699 This is used in conjunction with the `%' command.
3701 With a prefix argument, unsets the macro."
3706 ;; Make %%% toggle parsing comments for matching parentheses
3707 (viper-record-kbd-macro
3709 [(meta x) v i p e r - t o g g l e - p a r s e - s e x p - i g n o r e - c o m m e n t s return]
3713 "%%%%%% now toggles whether comments should be parsed for matching parentheses")))
3714 (viper-unrecord-kbd-macro "%%%" 'vi-state))))
3717 (defun viper-set-emacs-state-searchstyle-macros (unset &optional arg-majormode)
3718 "Set the macros for toggling the search style in Viper's emacs-state.
3719 The macro that toggles case sensitivity is bound to `//', and the one that
3720 toggles regexp search is bound to `///'.
3721 With a prefix argument, this function unsets the macros.
3722 If the optional prefix argument is non-nil and specifies a valid major mode,
3723 this sets the macros only in the macros in that major mode. Otherwise,
3724 the macros are set in the current major mode.
3725 \(When unsetting the macros, the second argument has no effect.\)"
3730 ;; toggle case sensitivity in search
3731 (viper-record-kbd-macro
3733 [1 (meta x) v i p e r - t o g g l e - s e a r c h - s t y l e return]
3734 (or arg-majormode major-mode))
3735 ;; toggle regexp/vanila search
3736 (viper-record-kbd-macro
3738 [2 (meta x) v i p e r - t o g g l e - s e a r c h - s t y l e return]
3739 (or arg-majormode major-mode))
3742 "// and /// now toggle case-sensitivity and regexp search.")))
3743 (viper-unrecord-kbd-macro "//" 'emacs-state)
3745 (viper-unrecord-kbd-macro "///" 'emacs-state))))
3748 (defun viper-search-forward (arg)
3749 "Search a string forward.
3750 ARG is used to find the ARG's occurrence of the string.
3751 Null string will repeat previous search."
3753 (let ((val (viper-P-val arg))
3754 (com (viper-getcom arg))
3755 (old-str viper-s-string)
3757 (setq viper-s-forward t)
3758 (viper-if-string "/")
3759 ;; this is not used at present, but may be used later
3760 (if (or (not (equal old-str viper-s-string))
3761 (not (markerp viper-local-search-start-marker))
3762 (not (marker-buffer viper-local-search-start-marker)))
3763 (setq viper-local-search-start-marker (point-marker)))
3764 (viper-search viper-s-string t val)
3767 (viper-move-marker-locally 'viper-com-point (mark t))
3768 (viper-execute-com 'viper-search-next val com)))
3771 (defun viper-search-backward (arg)
3772 "Search a string backward.
3773 ARG is used to find the ARG's occurrence of the string.
3774 Null string will repeat previous search."
3776 (let ((val (viper-P-val arg))
3777 (com (viper-getcom arg))
3778 (old-str viper-s-string)
3780 (setq viper-s-forward nil)
3781 (viper-if-string "?")
3782 ;; this is not used at present, but may be used later
3783 (if (or (not (equal old-str viper-s-string))
3784 (not (markerp viper-local-search-start-marker))
3785 (not (marker-buffer viper-local-search-start-marker)))
3786 (setq viper-local-search-start-marker (point-marker)))
3787 (viper-search viper-s-string nil val)
3790 (viper-move-marker-locally 'viper-com-point (mark t))
3791 (viper-execute-com 'viper-search-next val com)))))
3794 ;; Search for COUNT's occurrence of STRING.
3795 ;; Search is forward if FORWARD is non-nil, otherwise backward.
3796 ;; INIT-POINT is the position where search is to start.
3798 ;; (STRING FORW COUNT &optional NO-OFFSET INIT-POINT LIMIT FAIL-IF-NOT-FOUND)
3799 (defun viper-search (string forward arg
3800 &optional no-offset init-point fail-if-not-found)
3801 (if (not (equal string ""))
3802 (let ((val (viper-p-val arg))
3803 (com (viper-getcom arg))
3804 (offset (not no-offset))
3805 (case-fold-search viper-case-fold-search)
3806 (start-point (or init-point (point))))
3807 (viper-deactivate-mark)
3811 (if offset (viper-forward-char-carefully))
3814 (re-search-forward string nil nil val)
3815 (re-search-backward string))
3816 (search-forward string nil nil val)
3817 (search-backward string))
3818 (if (not (equal start-point (point)))
3819 (push-mark start-point t)))
3821 (if (and (not fail-if-not-found) viper-search-wrap-around-t)
3823 (message "Search wrapped around BOTTOM of buffer")
3824 (goto-char (point-min))
3825 (viper-search string forward (cons 1 com) t start-point 'fail)
3826 ;; don't wait in macros
3827 (or executing-kbd-macro
3828 (memq viper-intermediate-command
3830 viper-digit-argument
3831 viper-command-argument))
3833 ;; delete the wrap-around message
3836 (goto-char start-point)
3837 (error "`%s': %s not found"
3839 (if viper-re-search "Pattern" "String"))
3845 (re-search-backward string nil nil val)
3846 (search-backward string nil nil val))
3847 (if (not (equal start-point (point)))
3848 (push-mark start-point t)))
3850 (if (and (not fail-if-not-found) viper-search-wrap-around-t)
3852 (message "Search wrapped around TOP of buffer")
3853 (goto-char (point-max))
3854 (viper-search string forward (cons 1 com) t start-point 'fail)
3855 ;; don't wait in macros
3856 (or executing-kbd-macro
3857 (memq viper-intermediate-command
3859 viper-digit-argument
3860 viper-command-argument))
3862 ;; delete the wrap-around message
3865 (goto-char start-point)
3866 (error "`%s': %s not found"
3868 (if viper-re-search "Pattern" "String"))
3870 ;; pull up or down if at top/bottom of window
3871 (viper-adjust-window)
3872 ;; highlight the result of search
3873 ;; don't wait and don't highlight in macros
3874 (or executing-kbd-macro
3875 (memq viper-intermediate-command
3876 '(viper-repeat viper-digit-argument viper-command-argument))
3877 (viper-flash-search-pattern))
3880 (defun viper-search-next (arg)
3881 "Repeat previous search."
3883 (let ((val (viper-p-val arg))
3884 (com (viper-getcom arg))
3886 (if (null viper-s-string) (error viper-NoPrevSearch))
3887 (viper-search viper-s-string viper-s-forward arg)
3890 (viper-move-marker-locally 'viper-com-point (mark t))
3891 (viper-execute-com 'viper-search-next val com)))))
3893 (defun viper-search-Next (arg)
3894 "Repeat previous search in the reverse direction."
3896 (let ((val (viper-p-val arg))
3897 (com (viper-getcom arg))
3899 (if (null viper-s-string) (error viper-NoPrevSearch))
3900 (viper-search viper-s-string (not viper-s-forward) arg)
3903 (viper-move-marker-locally 'viper-com-point (mark t))
3904 (viper-execute-com 'viper-search-Next val com)))))
3907 ;; Search contents of buffer defined by one of Viper's motion commands.
3908 ;; Repeatable via `n' and `N'.
3909 (defun viper-buffer-search-enable (&optional c)
3910 (cond (c (setq viper-buffer-search-char c))
3911 ((null viper-buffer-search-char)
3912 (setq viper-buffer-search-char ?g)))
3913 (define-key viper-vi-basic-map
3914 (cond ((viper-characterp viper-buffer-search-char)
3915 (char-to-string viper-buffer-search-char))
3916 (t (error "viper-buffer-search-char: wrong value type, %S"
3917 viper-buffer-search-char)))
3918 'viper-command-argument)
3919 (aset viper-exec-array viper-buffer-search-char 'viper-exec-buffer-search)
3920 (setq viper-prefix-commands
3921 (cons viper-buffer-search-char viper-prefix-commands)))
3923 ;; This is a Viper wraper for isearch-forward.
3924 (defun viper-isearch-forward (arg)
3925 "Do incremental search forward."
3927 ;; emacs bug workaround
3928 (if (listp arg) (setq arg (car arg)))
3929 (viper-exec-form-in-emacs (list 'isearch-forward arg)))
3931 ;; This is a Viper wraper for isearch-backward."
3932 (defun viper-isearch-backward (arg)
3933 "Do incremental search backward."
3935 ;; emacs bug workaround
3936 (if (listp arg) (setq arg (car arg)))
3937 (viper-exec-form-in-emacs (list 'isearch-backward arg)))
3940 ;; visiting and killing files, buffers
3942 (defun viper-switch-to-buffer ()
3943 "Switch to buffer in the current window."
3945 (let ((other-buffer (other-buffer (current-buffer)))
3948 (funcall viper-read-buffer-function
3949 "Switch to buffer in this window: " other-buffer))
3950 (switch-to-buffer buffer)))
3952 (defun viper-switch-to-buffer-other-window ()
3953 "Switch to buffer in another window."
3955 (let ((other-buffer (other-buffer (current-buffer)))
3958 (funcall viper-read-buffer-function
3959 "Switch to buffer in another window: " other-buffer))
3960 (switch-to-buffer-other-window buffer)))
3962 (defun viper-kill-buffer ()
3965 (let (buffer buffer-name)
3967 (funcall viper-read-buffer-function
3968 (format "Kill buffer \(%s\): "
3969 (buffer-name (current-buffer)))))
3971 (if (null buffer-name)
3973 (get-buffer buffer-name)))
3974 (if (null buffer) (error "`%s': No such buffer" buffer-name))
3975 (if (or (not (buffer-modified-p buffer))
3978 "Buffer `%s' is modified, are you sure you want to kill it? "
3980 (kill-buffer buffer)
3981 (error "Buffer not killed"))))
3987 (defsubst viper-yank (text)
3988 "Yank TEXT silently. This works correctly with Emacs's yank-pop command."
3990 (setq this-command 'yank))
3992 (defun viper-put-back (arg)
3993 "Put back after point/below line."
3995 (let ((val (viper-p-val arg))
3996 (text (if viper-use-register
3997 (cond ((viper-valid-register viper-use-register '(digit))
3999 (- viper-use-register ?1) 'do-not-rotate))
4000 ((viper-valid-register viper-use-register)
4001 (get-register (downcase viper-use-register)))
4002 (t (error viper-InvalidRegister viper-use-register)))
4004 sv-point chars-inserted lines-inserted)
4006 (if viper-use-register
4007 (let ((reg viper-use-register))
4008 (setq viper-use-register nil)
4009 (error viper-EmptyRegister reg))
4011 (setq viper-use-register nil)
4012 (if (viper-end-with-a-newline-p text)
4018 (beginning-of-line))
4019 (if (not (eolp)) (viper-forward-char-carefully)))
4020 (set-marker (viper-mark-marker) (point) (current-buffer))
4021 (viper-set-destructive-command
4022 (list 'viper-put-back val nil viper-use-register nil nil))
4023 (setq sv-point (point))
4024 (viper-loop val (viper-yank text))
4025 (setq chars-inserted (abs (- (point) sv-point))
4026 lines-inserted (abs (count-lines (point) sv-point)))
4027 (if (or (> chars-inserted viper-change-notification-threshold)
4028 (> lines-inserted viper-change-notification-threshold))
4029 (unless (viper-is-in-minibuffer)
4030 (message "Inserted %d character(s), %d line(s)"
4031 chars-inserted lines-inserted))))
4032 ;; Vi puts cursor on the last char when the yanked text doesn't contain a
4033 ;; newline; it leaves the cursor at the beginning when the text contains
4035 (if (viper-same-line (point) (mark))
4036 (or (= (point) (mark)) (viper-backward-char-carefully))
4037 (exchange-point-and-mark)
4039 (back-to-indentation)))
4040 (viper-deactivate-mark))
4042 (defun viper-Put-back (arg)
4043 "Put back at point/above line."
4045 (let ((val (viper-p-val arg))
4046 (text (if viper-use-register
4047 (cond ((viper-valid-register viper-use-register '(digit))
4049 (- viper-use-register ?1) 'do-not-rotate))
4050 ((viper-valid-register viper-use-register)
4051 (get-register (downcase viper-use-register)))
4052 (t (error viper-InvalidRegister viper-use-register)))
4054 sv-point chars-inserted lines-inserted)
4056 (if viper-use-register
4057 (let ((reg viper-use-register))
4058 (setq viper-use-register nil)
4059 (error viper-EmptyRegister reg))
4061 (setq viper-use-register nil)
4062 (if (viper-end-with-a-newline-p text) (beginning-of-line))
4063 (viper-set-destructive-command
4064 (list 'viper-Put-back val nil viper-use-register nil nil))
4065 (set-marker (viper-mark-marker) (point) (current-buffer))
4066 (setq sv-point (point))
4067 (viper-loop val (viper-yank text))
4068 (setq chars-inserted (abs (- (point) sv-point))
4069 lines-inserted (abs (count-lines (point) sv-point)))
4070 (if (or (> chars-inserted viper-change-notification-threshold)
4071 (> lines-inserted viper-change-notification-threshold))
4072 (unless (viper-is-in-minibuffer)
4073 (message "Inserted %d character(s), %d line(s)"
4074 chars-inserted lines-inserted))))
4075 ;; Vi puts cursor on the last char when the yanked text doesn't contain a
4076 ;; newline; it leaves the cursor at the beginning when the text contains
4078 (if (viper-same-line (point) (mark))
4079 (or (= (point) (mark)) (viper-backward-char-carefully))
4080 (exchange-point-and-mark)
4082 (back-to-indentation)))
4083 (viper-deactivate-mark))
4086 ;; Copy region to kill-ring.
4087 ;; If BEG and END do not belong to the same buffer, copy empty region.
4088 (defun viper-copy-region-as-kill (beg end)
4090 (copy-region-as-kill beg end)
4091 (error (copy-region-as-kill beg beg))))
4094 (defun viper-delete-char (arg)
4095 "Delete next character."
4097 (let ((val (viper-p-val arg))
4099 (viper-set-destructive-command
4100 (list 'viper-delete-char val nil nil nil nil))
4101 (if (and viper-ex-style-editing
4102 (> val (viper-chars-in-region (point) (viper-line-pos 'end))))
4103 (setq val (viper-chars-in-region (point) (viper-line-pos 'end))))
4104 (if (and viper-ex-style-motion (eolp))
4105 (if (bolp) (error "") (setq val 0))) ; not bol---simply back 1 ch
4107 (viper-forward-char-carefully val)
4108 (setq end-del-pos (point)))
4109 (if viper-use-register
4111 (cond ((viper-valid-register viper-use-register '((Letter)))
4112 (viper-append-to-register
4113 (downcase viper-use-register) (point) end-del-pos))
4114 ((viper-valid-register viper-use-register)
4116 viper-use-register (point) end-del-pos nil))
4117 (t (error viper-InvalidRegister viper-use-register)))
4118 (setq viper-use-register nil)))
4121 (if viper-ex-style-motion
4122 (if (and (eolp) (not (bolp))) (backward-char 1)))
4125 (defun viper-delete-backward-char (arg)
4126 "Delete previous character. On reaching beginning of line, stop and beep."
4128 (let ((val (viper-p-val arg))
4130 (viper-set-destructive-command
4131 (list 'viper-delete-backward-char val nil nil nil nil))
4133 viper-ex-style-editing
4134 (> val (viper-chars-in-region (viper-line-pos 'start) (point))))
4135 (setq val (viper-chars-in-region (viper-line-pos 'start) (point))))
4137 (viper-backward-char-carefully val)
4138 (setq end-del-pos (point)))
4139 (if viper-use-register
4141 (cond ((viper-valid-register viper-use-register '(Letter))
4142 (viper-append-to-register
4143 (downcase viper-use-register) end-del-pos (point)))
4144 ((viper-valid-register viper-use-register)
4146 viper-use-register end-del-pos (point) nil))
4147 (t (error viper-InvalidRegister viper-use-register)))
4148 (setq viper-use-register nil)))
4149 (if (and (bolp) viper-ex-style-editing)
4151 (delete-backward-char val t)))
4154 (defun viper-del-backward-char-in-insert ()
4155 "Delete 1 char backwards while in insert mode."
4157 (if (and viper-ex-style-editing (bolp))
4159 ;; don't put on kill ring
4160 (delete-backward-char 1 nil)))
4163 (defun viper-del-backward-char-in-replace ()
4164 "Delete one character in replace mode.
4165 If `viper-delete-backwards-in-replace' is t, then DEL key actually deletes
4166 charecters. If it is nil, then the cursor just moves backwards, similarly
4167 to Vi. The variable `viper-ex-style-editing', if t, doesn't let the
4168 cursor move past the beginning of line."
4170 (cond (viper-delete-backwards-in-replace
4172 ;; don't put on kill ring
4173 (delete-backward-char 1 nil))
4174 (viper-ex-style-editing
4179 ;; don't put on kill ring
4180 (delete-backward-char 1 nil))))
4181 (viper-ex-style-editing
4186 (backward-char 1))))
4192 (defun viper-join-lines (arg)
4193 "Join this line to next, if ARG is nil. Otherwise, join ARG lines."
4195 (let ((val (viper-P-val arg)))
4196 (viper-set-destructive-command
4197 (list 'viper-join-lines val nil nil nil nil))
4198 (viper-loop (if (null val) 1 (1- val))
4203 (delete-region (point) (1- (point)))
4205 ;; fixup-whitespace sometimes does not leave space
4206 ;; between objects, so we insert it as in Vi
4207 (or (looking-at " ")
4215 (defun viper-change (beg end)
4216 (if (markerp beg) (setq beg (marker-position beg)))
4217 (if (markerp end) (setq end (marker-position end)))
4218 ;; beg is sometimes (mark t), which may be nil
4219 (or beg (setq beg end))
4221 (viper-set-complex-command-for-undo)
4222 (if viper-use-register
4224 (copy-to-register viper-use-register beg end nil)
4225 (setq viper-use-register nil)))
4226 (viper-set-replace-overlay beg end)
4227 (setq last-command nil) ; separate repl text from prev kills
4229 (if (= (viper-replace-start) (point-max))
4230 (error "End of buffer"))
4232 (setq viper-last-replace-region
4233 (buffer-substring (viper-replace-start)
4234 (viper-replace-end)))
4236 ;; protect against error while inserting "@" and other disasters
4237 ;; (e.g., read-only buff)
4238 (condition-case conds
4239 (if (or viper-allow-multiline-replace-regions
4240 (viper-same-line (viper-replace-start)
4241 (viper-replace-end)))
4243 ;; tabs cause problems in replace, so untabify
4244 (goto-char (viper-replace-end))
4245 (insert-before-markers "@") ; put placeholder after the TAB
4246 (untabify (viper-replace-start) (point))
4247 ;; del @, don't put on kill ring
4248 (delete-backward-char 1)
4250 (viper-set-replace-overlay-glyphs
4251 viper-replace-region-start-delimiter
4252 viper-replace-region-end-delimiter)
4253 ;; this move takes care of the last posn in the overlay, which
4254 ;; has to be shifted because of insert. We can't simply insert
4255 ;; "$" before-markers because then overlay-start will shift the
4256 ;; beginning of the overlay in case we are replacing a single
4257 ;; character. This fixes the bug with `s' and `cl' commands.
4258 (viper-move-replace-overlay (viper-replace-start) (point))
4259 (goto-char (viper-replace-start))
4260 (viper-change-state-to-replace t))
4261 (kill-region (viper-replace-start)
4262 (viper-replace-end))
4263 (viper-hide-replace-overlay)
4264 (viper-change-state-to-insert))
4265 (error ;; make sure that the overlay doesn't stay.
4266 ;; go back to the original point
4267 (goto-char (viper-replace-start))
4268 (viper-hide-replace-overlay)
4269 (viper-message-conditions conds))))
4272 (defun viper-change-subr (beg end)
4273 ;; beg is sometimes (mark t), which may be nil
4274 (or beg (setq beg end))
4275 (if viper-use-register
4277 (copy-to-register viper-use-register beg end nil)
4278 (setq viper-use-register nil)))
4279 (kill-region beg end)
4280 (setq this-command 'viper-change)
4281 (viper-yank-last-insertion))
4283 (defun viper-toggle-case (arg)
4284 "Toggle character case."
4286 (let ((val (viper-p-val arg)) (c))
4287 (viper-set-destructive-command
4288 (list 'viper-toggle-case val nil nil nil nil))
4290 (setq c (following-char))
4292 (if (eq c (upcase c))
4293 (insert-char (downcase c) 1)
4294 (insert-char (upcase c) 1))
4295 (if (eolp) (backward-char 1))
4296 (setq val (1- val)))))
4301 (defun viper-query-replace ()
4303 If a null string is suplied as the string to be replaced,
4304 the query replace mode will toggle between string replace
4305 and regexp replace."
4308 (setq str (viper-read-string-with-history
4309 (if viper-re-query-replace "Query replace regexp: "
4312 'viper-replace1-history
4313 (car viper-replace1-history) ; default
4315 (if (string= str "")
4317 (setq viper-re-query-replace (not viper-re-query-replace))
4318 (message "Query replace mode changed to %s"
4319 (if viper-re-query-replace "regexp replace"
4321 (if viper-re-query-replace
4322 (query-replace-regexp
4324 (viper-read-string-with-history
4325 (format "Query replace regexp `%s' with: " str)
4327 'viper-replace1-history
4328 (car viper-replace1-history) ; default
4332 (viper-read-string-with-history
4333 (format "Query replace `%s' with: " str)
4335 'viper-replace1-history
4336 (car viper-replace1-history) ; default
4342 (defun viper-mark-beginning-of-buffer ()
4343 "Mark beginning of buffer."
4346 (goto-char (point-min))
4347 (exchange-point-and-mark)
4348 (message "Mark set at the beginning of buffer"))
4350 (defun viper-mark-end-of-buffer ()
4351 "Mark end of buffer."
4354 (goto-char (point-max))
4355 (exchange-point-and-mark)
4356 (message "Mark set at the end of buffer"))
4358 (defun viper-mark-point ()
4359 "Set mark at point of buffer."
4361 (let ((char (read-char)))
4362 (cond ((and (<= ?a char) (<= char ?z))
4363 (point-to-register (viper-int-to-char (1+ (- char ?a)))))
4364 ((viper= char ?<) (viper-mark-beginning-of-buffer))
4365 ((viper= char ?>) (viper-mark-end-of-buffer))
4366 ((viper= char ?.) (viper-set-mark-if-necessary))
4367 ((viper= char ?,) (viper-cycle-through-mark-ring))
4368 ((viper= char ?^) (push-mark viper-saved-mark t t))
4369 ((viper= char ?D) (mark-defun))
4373 ;; Algorithm: If first invocation of this command save mark on ring, goto
4374 ;; mark, M0, and pop the most recent elt from the mark ring into mark,
4375 ;; making it into the new mark, M1.
4376 ;; Push this mark back and set mark to the original point position, p1.
4377 ;; So, if you hit '' or `` then you can return to p1.
4379 ;; If repeated command, pop top elt from the ring into mark and
4380 ;; jump there. This forgets the position, p1, and puts M1 back into mark.
4381 ;; Then we save the current pos, which is M0, jump to M1 and pop M2 from
4382 ;; the ring into mark. Push M2 back on the ring and set mark to M0.
4384 (defun viper-cycle-through-mark-ring ()
4385 "Visit previous locations on the mark ring.
4386 One can use `` and '' to temporarily jump 1 step back."
4387 (let* ((sv-pt (point)))
4388 ;; if repeated `m,' command, pop the previously saved mark.
4389 ;; Prev saved mark is actually prev saved point. It is used if the
4390 ;; user types `` or '' and is discarded
4391 ;; from the mark ring by the next `m,' command.
4392 ;; In any case, go to the previous or previously saved mark.
4393 ;; Then push the current mark (popped off the ring) and set current
4394 ;; point to be the mark. Current pt as mark is discarded by the next
4396 (if (eq last-command 'viper-cycle-through-mark-ring)
4398 ;; save current mark if the first iteration
4399 (setq mark-ring (delete (viper-mark-marker) mark-ring))
4401 (push-mark (mark t) t)) )
4403 (set-mark-command 1)
4404 ;; don't duplicate mark on the ring
4405 (setq mark-ring (delete (viper-mark-marker) mark-ring))
4407 (viper-deactivate-mark)
4408 (setq this-command 'viper-cycle-through-mark-ring)
4412 (defun viper-goto-mark (arg)
4415 (let ((char (read-char))
4416 (com (viper-getcom arg)))
4417 (viper-goto-mark-subr char com nil)))
4419 (defun viper-goto-mark-and-skip-white (arg)
4420 "Go to mark and skip to first non-white character on line."
4422 (let ((char (read-char))
4423 (com (viper-getCom arg)))
4424 (viper-goto-mark-subr char com t)))
4426 (defun viper-goto-mark-subr (char com skip-white)
4429 (error "Empty buffer")
4431 (cond ((viper-valid-register char '(letter))
4432 (let* ((buff (current-buffer))
4433 (reg (viper-int-to-char (1+ (- char ?a))))
4434 (text-marker (get-register reg)))
4435 ;; If marker points to file that had markers set (and those markers
4436 ;; were saved (as e.g., in session.el), then restore those markers
4437 (if (and (consp text-marker)
4438 (eq (car text-marker) 'file-query)
4439 (or (find-buffer-visiting (nth 1 text-marker))
4440 (y-or-n-p (format "Visit file %s again? "
4441 (nth 1 text-marker)))))
4443 (find-file (nth 1 text-marker))
4444 (when (and (<= (nth 2 text-marker) (point-max))
4445 (<= (point-min) (nth 2 text-marker)))
4446 (setq text-marker (copy-marker (nth 2 text-marker)))
4447 (set-register reg text-marker))))
4448 (if com (viper-move-marker-locally 'viper-com-point (point)))
4449 (if (not (viper-valid-marker text-marker))
4450 (error viper-EmptyTextmarker char))
4451 (if (and (viper-same-line (point) viper-last-jump)
4452 (= (point) viper-last-jump-ignore))
4453 (push-mark viper-last-jump t)
4454 (push-mark nil t)) ; no msg
4455 (viper-register-to-point reg)
4456 (setq viper-last-jump (point-marker))
4458 (back-to-indentation)
4459 (setq viper-last-jump-ignore (point))))
4461 (if (equal buff (current-buffer))
4462 (viper-execute-com (if skip-white
4463 'viper-goto-mark-and-skip-white
4466 (switch-to-buffer buff)
4467 (goto-char viper-com-point)
4468 (viper-change-state-to-vi)
4470 ((and (not skip-white) (viper= char ?`))
4471 (if com (viper-move-marker-locally 'viper-com-point (point)))
4472 (if (and (viper-same-line (point) viper-last-jump)
4473 (= (point) viper-last-jump-ignore))
4474 (goto-char viper-last-jump))
4475 (if (null (mark t)) (error "Mark is not set in this buffer"))
4476 (if (= (point) (mark t)) (pop-mark))
4477 (exchange-point-and-mark)
4478 (setq viper-last-jump (point-marker)
4479 viper-last-jump-ignore 0)
4480 (if com (viper-execute-com 'viper-goto-mark nil com)))
4481 ((and skip-white (viper= char ?'))
4482 (if com (viper-move-marker-locally 'viper-com-point (point)))
4483 (if (and (viper-same-line (point) viper-last-jump)
4484 (= (point) viper-last-jump-ignore))
4485 (goto-char viper-last-jump))
4486 (if (= (point) (mark t)) (pop-mark))
4487 (exchange-point-and-mark)
4488 (setq viper-last-jump (point))
4489 (back-to-indentation)
4490 (setq viper-last-jump-ignore (point))
4491 (if com (viper-execute-com 'viper-goto-mark-and-skip-white nil com)))
4492 (t (error viper-InvalidTextmarker char))))
4494 (defun viper-insert-tab ()
4498 (defun viper-exchange-point-and-mark ()
4500 (exchange-point-and-mark)
4501 (back-to-indentation))
4503 ;; Input Mode Indentation
4505 ;; Returns t, if the string before point matches the regexp STR.
4506 (defsubst viper-looking-back (str)
4507 (and (save-excursion (re-search-backward str nil t))
4508 (= (point) (match-end 0))))
4511 (defun viper-forward-indent ()
4512 "Indent forward -- `C-t' in Vi."
4515 (indent-to (+ (current-column) viper-shift-width)))
4517 (defun viper-backward-indent ()
4518 "Backtab, C-d in VI"
4521 (let ((p (point)) (c (current-column)) bol (indent t))
4522 (if (viper-looking-back "[0^]")
4524 (if (eq ?^ (preceding-char))
4525 (setq viper-preserve-indent t))
4526 (delete-backward-char 1)
4532 (if (re-search-backward "[^ \t]" bol 1) (forward-char))
4533 (delete-region (point) p)
4535 (indent-to (- c viper-shift-width)))
4536 (if (or (bolp) (viper-looking-back "[^ \t]"))
4537 (setq viper-cted nil)))))
4540 (defun viper-indent-line (col)
4541 (if viper-auto-indent
4544 (if (and viper-electric-mode
4545 (not (memq major-mode '(fundamental-mode
4547 paragraph-indent-text-mode))))
4548 (indent-according-to-mode)
4552 (defun viper-autoindent ()
4553 "Auto Indentation, Vi-style."
4555 (let ((col (current-indentation)))
4556 (if abbrev-mode (expand-abbrev))
4557 (if viper-preserve-indent
4558 (setq viper-preserve-indent nil)
4559 (setq viper-current-indent col))
4560 ;; don't leave whitespace lines around
4561 (if (memq last-command
4563 viper-open-line viper-Open-line
4564 viper-replace-state-exit-cmd))
4565 (indent-to-left-margin))
4566 ;; use \n instead of newline, or else <Return> will move the insert point
4569 (viper-indent-line viper-current-indent)
4573 ;; Viewing registers
4575 (defun viper-ket-function (arg)
4576 "Function called by \], the ket. View registers and call \]\]."
4578 (let ((reg (read-char)))
4579 (cond ((viper-valid-register reg '(letter Letter))
4580 (view-register (downcase reg)))
4581 ((viper-valid-register reg '(digit))
4582 (let ((text (current-kill (- reg ?1) 'do-not-rotate)))
4583 (with-output-to-temp-buffer " *viper-info*"
4584 (princ (format "Register %c contains the string:\n" reg))
4588 (viper-next-heading arg))
4590 viper-InvalidRegister reg)))))
4592 (defun viper-brac-function (arg)
4593 "Function called by \[, the brac. View textmarkers and call \[\["
4595 (let ((reg (read-char)))
4596 (cond ((viper= ?\[ reg)
4597 (viper-prev-heading arg))
4599 (viper-heading-end arg))
4600 ((viper-valid-register reg '(letter))
4601 (let* ((val (get-register (viper-int-to-char (1+ (- reg ?a)))))
4602 (buf (if (not (markerp val))
4603 (error viper-EmptyTextmarker reg)
4604 (marker-buffer val)))
4605 (pos (marker-position val))
4606 line-no text (s pos) (e pos))
4607 (with-output-to-temp-buffer " *viper-info*"
4612 (setq line-no (1+ (count-lines (point-min) val)))
4615 (if (re-search-backward "[^ \t]" nil t)
4621 (if (re-search-forward "[^ \t]" nil t)
4625 (setq text (buffer-substring s e))
4626 (setq text (format "%s<%c>%s"
4627 (substring text 0 (- pos s))
4628 reg (substring text (- pos s)))))
4631 "Textmarker `%c' is in buffer `%s' at line %d.\n"
4632 reg (buffer-name buf) line-no))
4633 (princ (format "Here is some text around %c:\n\n %s"
4635 (princ (format viper-EmptyTextmarker reg))))
4637 (t (error viper-InvalidTextmarker reg)))))
4641 (defun viper-delete-backward-word (arg)
4642 "Delete previous word."
4647 (delete-region (point) (mark t))
4652 ;; Get viper standard value of SYMBOL. If symbol is customized, get its
4653 ;; standard value. Otherwise, get the value saved in the alist STORAGE. If
4654 ;; STORAGE is nil, use viper-saved-user-settings.
4655 (defun viper-standard-value (symbol &optional storage)
4656 (or (eval (car (get symbol 'customized-value)))
4657 (eval (car (get symbol 'saved-value)))
4658 (nth 1 (assoc symbol (or storage viper-saved-user-settings)))))
4662 (defun viper-set-expert-level (&optional dont-change-unless)
4663 "Sets the expert level for a Viper user.
4664 Can be called interactively to change (temporarily or permanently) the
4665 current expert level.
4667 The optional argument DONT-CHANGE-UNLESS, if not nil, says that
4668 the level should not be changed, unless its current value is
4669 meaningless (i.e., not one of 1,2,3,4,5).
4671 User level determines the setting of Viper variables that are most
4672 sensitive for VI-style look-and-feel."
4676 (if (not (natnump viper-expert-level)) (setq viper-expert-level 0))
4678 (save-window-excursion
4679 (delete-other-windows)
4680 ;; if 0 < viper-expert-level < viper-max-expert-level
4681 ;; & dont-change-unless = t -- use it; else ask
4682 (viper-ask-level dont-change-unless))
4684 (setq viper-always t
4685 viper-ex-style-motion t
4686 viper-ex-style-editing t
4687 viper-want-ctl-h-help nil)
4689 (cond ((eq viper-expert-level 1) ; novice or beginner
4690 (global-set-key ; in emacs-state
4692 (if (viper-window-display-p) 'viper-iconify 'suspend-emacs))
4693 (setq viper-no-multiple-ESC t
4695 viper-vi-style-in-minibuffer t
4696 viper-search-wrap-around-t t
4697 viper-electric-mode nil
4698 viper-want-emacs-keys-in-vi nil
4699 viper-want-emacs-keys-in-insert nil))
4701 ((and (> viper-expert-level 1) (< viper-expert-level 5))
4702 ;; intermediate to guru
4703 (setq viper-no-multiple-ESC (if (viper-window-display-p)
4705 viper-electric-mode t
4706 viper-want-emacs-keys-in-vi t
4707 viper-want-emacs-keys-in-insert (> viper-expert-level 2))
4709 (if (eq viper-expert-level 4) ; respect user's ex-style motion
4710 ; and viper-no-multiple-ESC
4713 viper-ex-style-editing
4714 (viper-standard-value 'viper-ex-style-editing)
4715 viper-ex-style-motion
4716 (viper-standard-value 'viper-ex-style-motion))
4717 (setq viper-ex-style-motion
4718 (viper-standard-value 'viper-ex-style-motion)
4719 viper-ex-style-editing
4720 (viper-standard-value 'viper-ex-style-editing)
4722 (viper-standard-value 'viper-re-search)
4723 viper-no-multiple-ESC
4724 (viper-standard-value 'viper-no-multiple-ESC)))))
4727 ;; Ideally, if 5 is selected, a buffer should pop up to let the
4728 ;; user toggle the values of variables.
4729 (t (setq-default viper-ex-style-editing
4730 (viper-standard-value 'viper-ex-style-editing)
4731 viper-ex-style-motion
4732 (viper-standard-value 'viper-ex-style-motion))
4733 (setq viper-want-ctl-h-help
4734 (viper-standard-value 'viper-want-ctl-h-help)
4736 (viper-standard-value 'viper-always)
4737 viper-no-multiple-ESC
4738 (viper-standard-value 'viper-no-multiple-ESC)
4739 viper-ex-style-motion
4740 (viper-standard-value 'viper-ex-style-motion)
4741 viper-ex-style-editing
4742 (viper-standard-value 'viper-ex-style-editing)
4744 (viper-standard-value 'viper-re-search)
4746 (viper-standard-value 'viper-electric-mode)
4747 viper-want-emacs-keys-in-vi
4748 (viper-standard-value 'viper-want-emacs-keys-in-vi)
4749 viper-want-emacs-keys-in-insert
4750 (viper-standard-value 'viper-want-emacs-keys-in-insert))))
4752 (viper-set-mode-vars-for viper-current-state)
4753 (if (or viper-always
4754 (and (> viper-expert-level 0) (> 5 viper-expert-level)))
4758 ;; Ask user expert level.
4759 (defun viper-ask-level (dont-change-unless)
4760 (let ((ask-buffer " *viper-ask-level*")
4761 level-changed repeated)
4762 (save-window-excursion
4763 (switch-to-buffer ask-buffer)
4765 (while (or (> viper-expert-level viper-max-expert-level)
4766 (< viper-expert-level 1)
4767 (null dont-change-unless))
4771 (message "Invalid user level")
4774 (setq dont-change-unless t
4777 Please specify your level of familiarity with the venomous VI PERil
4778 (and the VI Plan for Emacs Rescue).
4779 You can change it at any time by typing `M-x viper-set-expert-level RET'
4781 1 -- BEGINNER: Almost all Emacs features are suppressed.
4782 Feels almost like straight Vi. File name completion and
4783 command history in the minibuffer are thrown in as a bonus.
4784 To use Emacs productively, you must reach level 3 or higher.
4785 2 -- MASTER: C-c now has its standard Emacs meaning in Vi command state,
4786 so most Emacs commands can be used when Viper is in Vi state.
4787 Good progress---you are well on the way to level 3!
4788 3 -- GRAND MASTER: Like 2, but most Emacs commands are available also
4789 in Viper's insert state.
4790 4 -- GURU: Like 3, but user settings are respected for viper-no-multiple-ESC,
4791 viper-ex-style-motion, viper-ex-style-editing, and
4792 viper-re-search variables. Adjust these settings to your taste.
4793 5 -- WIZARD: Like 4, but user settings are also respected for viper-always,
4794 viper-electric-mode, viper-want-ctl-h-help, viper-want-emacs-keys-in-vi,
4795 and viper-want-emacs-keys-in-insert. Adjust these to your taste.
4797 Please, specify your level now: ")
4799 (setq viper-expert-level (- (viper-read-char-exclusive) ?0))
4802 ;; tell the user if level was changed
4806 (format "\n\n\n\n\n\t\tYou have selected user level %d"
4807 viper-expert-level))
4808 (if (y-or-n-p "Do you wish to make this change permanent? ")
4809 ;; save the setting for viper-expert-level
4812 (format "Saving user level %d ..." viper-expert-level)
4813 viper-custom-file-name))
4815 (bury-buffer) ; remove ask-buffer from screen
4825 ;; if ENFORCE-BUFFER is not nil, error if CHAR is a marker in another buffer
4826 (defun viper-register-to-point (char &optional enforce-buffer)
4827 "Like jump-to-register, but switches to another buffer in another window."
4828 (interactive "cViper register to point: ")
4829 (let ((val (get-register char)))
4831 ((and (fboundp 'frame-configuration-p)
4832 (frame-configuration-p val))
4833 (set-frame-configuration val))
4834 ((window-configuration-p val)
4835 (set-window-configuration val))
4836 ((viper-valid-marker val)
4837 (if (and enforce-buffer
4838 (not (equal (current-buffer) (marker-buffer val))))
4839 (error (concat viper-EmptyTextmarker " in this buffer")
4840 (viper-int-to-char (1- (+ char ?a)))))
4841 (pop-to-buffer (marker-buffer val))
4843 ((and (consp val) (eq (car val) 'file))
4844 (find-file (cdr val)))
4846 (error viper-EmptyTextmarker (viper-int-to-char (1- (+ char ?a))))))))
4849 (defun viper-save-kill-buffer ()
4850 "Save then kill current buffer."
4852 (if (< viper-expert-level 2)
4853 (save-buffers-kill-emacs)
4855 (kill-buffer (current-buffer))))
4861 (defun viper-submit-report ()
4862 "Submit bug report on Viper."
4864 (let ((reporter-prompt-for-summary-p t)
4865 (viper-device-type (viper-device-type))
4866 color-display-p frame-parameters
4867 minibuffer-emacs-face minibuffer-vi-face minibuffer-insert-face
4868 varlist salutation window-config)
4870 ;; If mode info is needed, add variable to `let' and then set it below,
4871 ;; like we did with color-display-p.
4872 (setq color-display-p (if (viper-window-display-p)
4873 (viper-color-display-p)
4875 minibuffer-vi-face (if (viper-has-face-support-p)
4876 (viper-get-face viper-minibuffer-vi-face)
4878 minibuffer-insert-face (if (viper-has-face-support-p)
4880 viper-minibuffer-insert-face)
4882 minibuffer-emacs-face (if (viper-has-face-support-p)
4884 viper-minibuffer-emacs-face)
4886 frame-parameters (if (fboundp 'frame-parameters)
4887 (frame-parameters (selected-frame))))
4889 (setq varlist (list 'viper-vi-minibuffer-minor-mode
4890 'viper-insert-minibuffer-minor-mode
4891 'viper-vi-intercept-minor-mode
4892 'viper-vi-local-user-minor-mode
4893 'viper-vi-kbd-minor-mode
4894 'viper-vi-global-user-minor-mode
4895 'viper-vi-state-modifier-minor-mode
4896 'viper-vi-diehard-minor-mode
4897 'viper-vi-basic-minor-mode
4898 'viper-replace-minor-mode
4899 'viper-insert-intercept-minor-mode
4900 'viper-insert-local-user-minor-mode
4901 'viper-insert-kbd-minor-mode
4902 'viper-insert-global-user-minor-mode
4903 'viper-insert-state-modifier-minor-mode
4904 'viper-insert-diehard-minor-mode
4905 'viper-insert-basic-minor-mode
4906 'viper-emacs-intercept-minor-mode
4907 'viper-emacs-local-user-minor-mode
4908 'viper-emacs-kbd-minor-mode
4909 'viper-emacs-global-user-minor-mode
4910 'viper-emacs-state-modifier-minor-mode
4911 'viper-automatic-iso-accents
4912 'viper-special-input-method
4913 'viper-want-emacs-keys-in-insert
4914 'viper-want-emacs-keys-in-vi
4915 'viper-keep-point-on-undo
4916 'viper-no-multiple-ESC
4917 'viper-electric-mode
4919 'viper-want-ctl-h-help
4920 'viper-ex-style-editing
4921 'viper-delete-backwards-in-replace
4922 'viper-vi-style-in-minibuffer
4923 'viper-vi-state-hook
4924 'viper-insert-state-hook
4925 'viper-replace-state-hook
4926 'viper-emacs-state-hook
4927 'ex-cycle-other-window
4928 'ex-cycle-through-non-files
4935 'minibuffer-insert-face
4936 'minibuffer-emacs-face
4939 Congratulations! You may have unearthed a bug in Viper!
4940 Please mail a concise, accurate summary of the problem to the address above.
4942 -------------------------------------------------------------------")
4943 (setq window-config (current-window-configuration))
4944 (with-output-to-temp-buffer " *viper-info*"
4945 (switch-to-buffer " *viper-info*")
4946 (delete-other-windows)
4948 PLEASE FOLLOW THESE PROCEDURES
4949 ------------------------------
4951 Before reporting a bug, please verify that it is related to Viper, and is
4952 not cause by other packages you are using.
4954 Don't report compilation warnings, unless you are certain that there is a
4955 problem. These warnings are normal and unavoidable.
4957 Please note that users should not modify variables and keymaps other than
4958 those advertised in the manual. Such `customization' is likely to crash
4959 Viper, as it would any other improperly customized Emacs package.
4961 If you are reporting an error message received while executing one of the
4962 Viper commands, type:
4964 M-x set-variable <Return> debug-on-error <Return> t <Return>
4966 Then reproduce the error. The above command will cause Emacs to produce a
4967 back trace of the execution that leads to the error. Please include this
4968 trace in your bug report.
4970 If you believe that one of Viper's commands goes into an infinite loop
4971 \(e.g., Emacs freezes\), type:
4973 M-x set-variable <Return> debug-on-quit <Return> t <Return>
4975 Then reproduce the problem. Wait for a few seconds, then type C-g to abort
4976 the current command. Include the resulting back trace in the bug report.
4978 Mail anyway (y or n)? ")
4979 (if (y-or-n-p "Mail anyway? ")
4981 (set-window-configuration window-config)
4982 (error "Bug report aborted")))
4985 (set-window-configuration window-config)
4987 (reporter-submit-bug-report "kifer@cs.stonybrook.edu"
4990 nil 'delete-other-windows
4997 ;;; arch-tag: 739a6450-5fda-44d0-88b0-325053d888c2
4998 ;;; viper-cmd.el ends here