1 ;;; viper-cmd.el --- Vi command support for Viper
3 ;; Copyright (C) 1997 Free Software Foundation, Inc.
5 ;; Author: Michael Kifer <kifer@cs.sunysb.edu>
7 ;; This file is part of GNU Emacs.
9 ;; GNU Emacs is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 2, or (at your option)
14 ;; GNU Emacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 ;; Boston, MA 02111-1307, USA.
32 (defvar viper-minibuffer-current-face)
33 (defvar viper-minibuffer-insert-face)
34 (defvar viper-minibuffer-vi-face)
35 (defvar viper-minibuffer-emacs-face)
37 (defvar viper-mode-string)
38 (defvar viper-custom-file-name)
39 (defvar iso-accents-mode)
41 (defvar quail-current-str)
42 (defvar zmacs-region-stays)
43 (defvar mark-even-if-inactive)
45 ;; loading happens only in non-interactive compilation
46 ;; in order to spare non-viperized emacs from being viperized
49 (let ((load-path (cons (expand-file-name ".") load-path)))
50 (or (featurep 'viper-util)
51 (load "viper-util.el" nil nil 'nosuffix))
52 (or (featurep 'viper-keym)
53 (load "viper-keym.el" nil nil 'nosuffix))
54 (or (featurep 'viper-mous)
55 (load "viper-mous.el" nil nil 'nosuffix))
56 (or (featurep 'viper-macs)
57 (load "viper-macs.el" nil nil 'nosuffix))
58 (or (featurep 'viper-ex)
59 (load "viper-ex.el" nil nil 'nosuffix))
74 ;; These test functions are shamelessly lifted from vip 4.4.2 by Aamod Sane
76 ;; generate test functions
77 ;; given symbol foo, foo-p is the test function, foos is the set of
79 ;; (macroexpand '(viper-test-com-defun foo))
80 ;; (defun foo-p (com) (consp (memq com foos)))
82 (defmacro viper-test-com-defun (name)
83 (let* ((snm (symbol-name name))
84 (nm-p (intern (concat snm "-p")))
85 (nms (intern (concat snm "s"))))
87 (consp (viper-memq-char com ,nms)
90 ;; Variables for defining VI commands
92 ;; Modifying commands that can be prefixes to movement commands
93 (defconst viper-prefix-commands '(?c ?d ?y ?! ?= ?# ?< ?> ?\"))
94 ;; define viper-prefix-command-p
95 (viper-test-com-defun viper-prefix-command)
97 ;; Commands that are pairs eg. dd. r and R here are a hack
98 (defconst viper-charpair-commands '(?c ?d ?y ?! ?= ?< ?> ?r ?R))
99 ;; define viper-charpair-command-p
100 (viper-test-com-defun viper-charpair-command)
102 (defconst viper-movement-commands '(?b ?B ?e ?E ?f ?F ?G ?h ?H ?j ?k ?l
103 ?H ?M ?L ?n ?t ?T ?w ?W ?$ ?%
104 ?^ ?( ?) ?- ?+ ?| ?{ ?} ?[ ?] ?' ?`
105 ?\; ?, ?0 ?? ?/ ?\ ?\C-m
110 ;; define viper-movement-command-p
111 (viper-test-com-defun viper-movement-command)
114 (defconst viper-digit-commands '(?1 ?2 ?3 ?4 ?5 ?6 ?7 ?8 ?9))
116 ;; define viper-digit-command-p
117 (viper-test-com-defun viper-digit-command)
119 ;; Commands that can be repeated by . (dotted)
120 (defconst viper-dotable-commands '(?c ?d ?C ?s ?S ?D ?> ?<))
121 ;; define viper-dotable-command-p
122 (viper-test-com-defun viper-dotable-command)
124 ;; Commands that can follow a #
125 (defconst viper-hash-commands '(?c ?C ?g ?q ?s))
126 ;; define viper-hash-command-p
127 (viper-test-com-defun viper-hash-command)
129 ;; Commands that may have registers as prefix
130 (defconst viper-regsuffix-commands '(?d ?y ?Y ?D ?p ?P ?x ?X))
131 ;; define viper-regsuffix-command-p
132 (viper-test-com-defun viper-regsuffix-command)
134 (defconst viper-vi-commands (append viper-movement-commands
136 viper-dotable-commands
137 viper-charpair-commands
139 viper-prefix-commands
140 viper-regsuffix-commands)
141 "The list of all commands in Vi-state.")
142 ;; define viper-vi-command-p
143 (viper-test-com-defun viper-vi-command)
145 ;; Where viper saves mark. This mark is resurrected by m^
146 (defvar viper-saved-mark nil)
154 ;; Runs viper-after-change-functions inside after-change-functions
155 (defun viper-after-change-sentinel (beg end len)
156 (run-hook-with-args 'viper-after-change-functions beg end len))
158 ;; Runs viper-before-change-functions inside before-change-functions
159 (defun viper-before-change-sentinel (beg end)
160 (run-hook-with-args 'viper-before-change-functions beg end))
162 (defsubst viper-post-command-sentinel ()
163 (run-hooks 'viper-post-command-hooks)
164 (if (eq viper-current-state 'vi-state)
165 (viper-restore-cursor-color 'after-insert-mode)))
167 (defsubst viper-pre-command-sentinel ()
168 (run-hooks 'viper-pre-command-hooks))
170 ;; Needed so that Viper will be able to figure the last inserted
171 ;; chunk of text with reasonable accuracy.
172 (defsubst viper-insert-state-post-command-sentinel ()
173 (if (and (memq viper-current-state '(insert-state replace-state))
175 (>= (point) viper-insert-point))
176 (setq viper-last-posn-while-in-insert-state (point-marker)))
177 (or (viper-overlay-p viper-replace-overlay)
179 (viper-set-replace-overlay (point-min) (point-min))
180 (viper-hide-replace-overlay)))
181 (if (eq viper-current-state 'insert-state)
182 (let ((has-saved-cursor-color-in-insert-mode
183 (stringp (viper-get-saved-cursor-color-in-insert-mode))))
184 (or has-saved-cursor-color-in-insert-mode
185 (string= (viper-get-cursor-color) viper-insert-state-cursor-color)
186 ;; save current color, if not already saved
187 (viper-save-cursor-color 'before-insert-mode))
188 ;; set insert mode cursor color
189 (viper-change-cursor-color viper-insert-state-cursor-color)))
191 (if (and (memq this-command '(dabbrev-expand hippie-expand))
192 (integerp viper-pre-command-point)
193 (markerp viper-insert-point)
194 (marker-position viper-insert-point)
195 (> viper-insert-point viper-pre-command-point))
196 (viper-move-marker-locally viper-insert-point viper-pre-command-point))
199 (defsubst viper-preserve-cursor-color ()
200 (or (memq this-command '(self-insert-command
201 viper-del-backward-char-in-insert
202 viper-del-backward-char-in-replace
203 viper-delete-backward-char
206 (memq (viper-event-key last-command-event)
207 '(up down left right (meta f) (meta b)
208 (control n) (control p) (control f) (control b)))))
210 (defsubst viper-insert-state-pre-command-sentinel ()
211 (or (viper-preserve-cursor-color)
212 (viper-restore-cursor-color 'after-insert-mode))
213 (if (and (memq this-command '(dabbrev-expand hippie-expand))
214 (markerp viper-insert-point)
215 (marker-position viper-insert-point))
216 (setq viper-pre-command-point (marker-position viper-insert-point))))
218 (defsubst viper-R-state-post-command-sentinel ()
219 ;; Restoring cursor color is needed despite
220 ;; viper-replace-state-pre-command-sentinel: When you jump to another buffer
221 ;; in another frame, the pre-command hook won't change cursor color to
222 ;; default in that other frame. So, if the second frame cursor was red and
223 ;; we set the point outside the replacement region, then the cursor color
224 ;; will remain red. Restoring the default, below, prevents this.
225 (if (and (<= (viper-replace-start) (point))
226 (<= (point) (viper-replace-end)))
227 (viper-change-cursor-color viper-replace-overlay-cursor-color)
228 (viper-restore-cursor-color 'after-replace-mode)
231 ;; to speed up, don't change cursor color before self-insert
232 ;; and common move commands
233 (defsubst viper-replace-state-pre-command-sentinel ()
234 (or (viper-preserve-cursor-color)
235 (viper-restore-cursor-color 'after-replace-mode)))
238 ;; Make sure we don't delete more than needed.
239 ;; This is executed at viper-last-posn-in-replace-region
240 (defsubst viper-trim-replace-chars-to-delete-if-necessary ()
241 (setq viper-replace-chars-to-delete
243 (min viper-replace-chars-to-delete
244 ;; Don't delete more than to the end of repl overlay
245 (viper-chars-in-region
246 (viper-replace-end) viper-last-posn-in-replace-region)
247 ;; point is viper-last-posn-in-replace-region now
248 ;; So, this limits deletion to the end of line
249 (viper-chars-in-region (point) (viper-line-pos 'end))
253 (defun viper-replace-state-post-command-sentinel ()
254 ;; Restoring cursor color is needed despite
255 ;; viper-replace-state-pre-command-sentinel: When one jumps to another buffer
256 ;; in another frame, the pre-command hook won't change cursor color to
257 ;; default in that other frame. So, if the second frame cursor was red and
258 ;; we set the point outside the replacement region, then the cursor color
259 ;; will remain red. Restoring the default, below, fixes this problem.
261 ;; We optimize for some commands, like self-insert-command,
262 ;; viper-delete-backward-char, etc., since they either don't change
263 ;; cursor color or, if they terminate replace mode, the color will be changed
264 ;; in viper-finish-change
265 (or (viper-preserve-cursor-color)
266 (viper-restore-cursor-color 'after-replace-mode))
268 ((eq viper-current-state 'replace-state)
269 ;; delete characters to compensate for inserted chars.
270 (let ((replace-boundary (viper-replace-end)))
272 (goto-char viper-last-posn-in-replace-region)
273 (viper-trim-replace-chars-to-delete-if-necessary)
274 (delete-char viper-replace-chars-to-delete)
275 (setq viper-replace-chars-to-delete 0)
276 ;; terminate replace mode if reached replace limit
277 (if (= viper-last-posn-in-replace-region (viper-replace-end))
278 (viper-finish-change)))
280 (if (viper-pos-within-region
281 (point) (viper-replace-start) replace-boundary)
283 ;; the state may have changed in viper-finish-change above
284 (if (eq viper-current-state 'replace-state)
285 (viper-change-cursor-color viper-replace-overlay-cursor-color))
286 (setq viper-last-posn-in-replace-region (point-marker))))
288 ;; terminate replace mode if changed Viper states.
289 (t (viper-finish-change))))
294 ;; Change state to NEW-STATE---either emacs-state, vi-state, or insert-state.
295 (defun viper-change-state (new-state)
296 ;; Keep viper-post/pre-command-hooks fresh.
297 ;; We remove then add viper-post/pre-command-sentinel since it is very
298 ;; desirable that viper-pre-command-sentinel is the last hook and
299 ;; viper-post-command-sentinel is the first hook.
301 (make-local-hook 'viper-after-change-functions)
302 (make-local-hook 'viper-before-change-functions)
303 (make-local-hook 'viper-post-command-hooks)
304 (make-local-hook 'viper-pre-command-hooks)
306 (remove-hook 'post-command-hook 'viper-post-command-sentinel)
307 (add-hook 'post-command-hook 'viper-post-command-sentinel)
308 (remove-hook 'pre-command-hook 'viper-pre-command-sentinel)
309 (add-hook 'pre-command-hook 'viper-pre-command-sentinel t)
310 ;; These hooks will be added back if switching to insert/replace mode
311 (remove-hook 'viper-post-command-hooks
312 'viper-insert-state-post-command-sentinel 'local)
313 (remove-hook 'viper-pre-command-hooks
314 'viper-insert-state-pre-command-sentinel 'local)
315 (setq viper-intermediate-command nil)
316 (cond ((eq new-state 'vi-state)
317 (cond ((member viper-current-state '(insert-state replace-state))
319 ;; move viper-last-posn-while-in-insert-state
320 ;; This is a normal hook that is executed in insert/replace
321 ;; states after each command. In Vi/Emacs state, it does
322 ;; nothing. We need to execute it here to make sure that
323 ;; the last posn was recorded when we hit ESC.
324 ;; It may be left unrecorded if the last thing done in
325 ;; insert/repl state was dabbrev-expansion or abbrev
326 ;; expansion caused by hitting ESC
327 (viper-insert-state-post-command-sentinel)
329 (condition-case conds
331 (viper-save-last-insertion
333 viper-last-posn-while-in-insert-state)
334 (if viper-began-as-replace
335 (setq viper-began-as-replace nil)
336 ;; repeat insert commands if numerical arg > 1
338 (viper-repeat-insert-command))))
340 (viper-message-conditions conds)))
342 (if (> (length viper-last-insertion) 0)
343 (viper-push-onto-ring viper-last-insertion
344 'viper-insertion-ring))
346 (if viper-ESC-moves-cursor-back
347 (or (bolp) (backward-char 1))))
351 ((memq new-state '(insert-state replace-state))
352 (if (memq viper-current-state '(emacs-state vi-state))
353 (viper-move-marker-locally 'viper-insert-point (point)))
354 (viper-move-marker-locally
355 'viper-last-posn-while-in-insert-state (point))
356 (add-hook 'viper-post-command-hooks
357 'viper-insert-state-post-command-sentinel t 'local)
358 (add-hook 'viper-pre-command-hooks
359 'viper-insert-state-pre-command-sentinel t 'local))
362 ;; Nothing needs to be done to switch to emacs mode! Just set some
363 ;; variables, which is already done in viper-change-state-to-emacs!
366 ;; always turn off iso-accents-mode in vi-state, or else we won't be able to
367 ;; use the keys `,',^ , as they will do accents instead of Vi actions.
368 (cond ((eq new-state 'vi-state) (viper-set-iso-accents-mode nil));accents off
369 (viper-automatic-iso-accents (viper-set-iso-accents-mode t));accents on
370 (t (viper-set-iso-accents-mode nil)))
371 ;; Always turn off quail mode in vi state
372 (cond ((eq new-state 'vi-state) (viper-set-input-method nil)) ;intl input off
373 (viper-special-input-method (viper-set-input-method t)) ;intl input on
374 (t (viper-set-input-method nil)))
376 (setq viper-current-state new-state)
378 (viper-update-syntax-classes)
379 (viper-normalize-minor-mode-map-alist)
380 (viper-adjust-keys-for new-state)
381 (viper-set-mode-vars-for new-state)
382 (viper-refresh-mode-line)
387 (defun viper-adjust-keys-for (state)
388 "Make necessary adjustments to keymaps before entering STATE."
389 (cond ((memq state '(insert-state replace-state))
390 (if viper-auto-indent
392 (define-key viper-insert-basic-map "\C-m" 'viper-autoindent)
393 (if viper-want-emacs-keys-in-insert
395 (define-key viper-insert-basic-map "\C-j" nil)
397 (define-key viper-insert-basic-map "\C-j" 'viper-autoindent)))
398 (define-key viper-insert-basic-map "\C-m" nil)
399 (define-key viper-insert-basic-map "\C-j" nil))
401 (setq viper-insert-diehard-minor-mode
402 (not viper-want-emacs-keys-in-insert))
404 (if viper-want-ctl-h-help
406 (define-key viper-insert-basic-map "\C-h" 'help-command)
407 (define-key viper-replace-map "\C-h" 'help-command))
408 (define-key viper-insert-basic-map
409 "\C-h" 'viper-del-backward-char-in-insert)
410 (define-key viper-replace-map
411 "\C-h" 'viper-del-backward-char-in-replace))
412 ;; In XEmacs, C-h overrides backspace, so we make sure it doesn't.
413 (define-key viper-insert-basic-map
414 [backspace] 'viper-del-backward-char-in-insert)
415 (define-key viper-replace-map
416 [backspace] 'viper-del-backward-char-in-replace)
417 ) ; end insert/replace case
419 (setq viper-vi-diehard-minor-mode (not viper-want-emacs-keys-in-vi))
420 (if viper-want-ctl-h-help
421 (define-key viper-vi-basic-map "\C-h" 'help-command)
422 (define-key viper-vi-basic-map "\C-h" 'viper-backward-char))
423 ;; In XEmacs, C-h overrides backspace, so we make sure it doesn't.
424 (define-key viper-vi-basic-map [backspace] 'viper-backward-char))
428 ;; Normalizes minor-mode-map-alist by putting Viper keymaps first.
429 ;; This ensures that Viper bindings are in effect, regardless of which minor
430 ;; modes were turned on by the user or by other packages.
431 (defun viper-normalize-minor-mode-map-alist ()
432 (setq minor-mode-map-alist
433 (viper-append-filter-alist
434 (list (cons 'viper-vi-intercept-minor-mode viper-vi-intercept-map)
435 (cons 'viper-vi-minibuffer-minor-mode viper-minibuffer-map)
436 (cons 'viper-vi-local-user-minor-mode viper-vi-local-user-map)
437 (cons 'viper-vi-kbd-minor-mode viper-vi-kbd-map)
438 (cons 'viper-vi-global-user-minor-mode viper-vi-global-user-map)
439 (cons 'viper-vi-state-modifier-minor-mode
441 (cdr (assoc major-mode
442 viper-vi-state-modifier-alist)))
443 (cdr (assoc major-mode viper-vi-state-modifier-alist))
445 (cons 'viper-vi-diehard-minor-mode viper-vi-diehard-map)
446 (cons 'viper-vi-basic-minor-mode viper-vi-basic-map)
447 (cons 'viper-insert-intercept-minor-mode
448 viper-insert-intercept-map)
449 (cons 'viper-replace-minor-mode viper-replace-map)
450 ;; viper-insert-minibuffer-minor-mode must come after
451 ;; viper-replace-minor-mode
452 (cons 'viper-insert-minibuffer-minor-mode
453 viper-minibuffer-map)
454 (cons 'viper-insert-local-user-minor-mode
455 viper-insert-local-user-map)
456 (cons 'viper-insert-kbd-minor-mode viper-insert-kbd-map)
457 (cons 'viper-insert-global-user-minor-mode
458 viper-insert-global-user-map)
459 (cons 'viper-insert-state-modifier-minor-mode
461 (cdr (assoc major-mode
462 viper-insert-state-modifier-alist)))
463 (cdr (assoc major-mode
464 viper-insert-state-modifier-alist))
466 (cons 'viper-insert-diehard-minor-mode viper-insert-diehard-map)
467 (cons 'viper-insert-basic-minor-mode viper-insert-basic-map)
468 (cons 'viper-emacs-intercept-minor-mode
469 viper-emacs-intercept-map)
470 (cons 'viper-emacs-local-user-minor-mode
471 viper-emacs-local-user-map)
472 (cons 'viper-emacs-kbd-minor-mode viper-emacs-kbd-map)
473 (cons 'viper-emacs-global-user-minor-mode
474 viper-emacs-global-user-map)
475 (cons 'viper-emacs-state-modifier-minor-mode
478 (assoc major-mode viper-emacs-state-modifier-alist)))
480 (assoc major-mode viper-emacs-state-modifier-alist))
483 minor-mode-map-alist)))
487 ;; Viper mode-changing commands and utilities
489 ;; Modifies mode-line-buffer-identification.
490 (defun viper-refresh-mode-line ()
491 (setq viper-mode-string
492 (cond ((eq viper-current-state 'emacs-state) viper-emacs-state-id)
493 ((eq viper-current-state 'vi-state) viper-vi-state-id)
494 ((eq viper-current-state 'replace-state) viper-replace-state-id)
495 ((eq viper-current-state 'insert-state) viper-insert-state-id)))
497 ;; Sets Viper mode string in global-mode-string
498 (force-mode-line-update))
501 ;; Switch from Insert state to Vi state.
502 (defun viper-exit-insert-state ()
504 (viper-change-state-to-vi))
506 (defun viper-set-mode-vars-for (state)
507 "Sets Viper minor mode variables to put Viper's state STATE in effect."
510 (setq viper-vi-minibuffer-minor-mode nil
511 viper-insert-minibuffer-minor-mode nil
512 viper-vi-intercept-minor-mode nil
513 viper-insert-intercept-minor-mode nil
515 viper-vi-local-user-minor-mode nil
516 viper-vi-kbd-minor-mode nil
517 viper-vi-global-user-minor-mode nil
518 viper-vi-state-modifier-minor-mode nil
519 viper-vi-diehard-minor-mode nil
520 viper-vi-basic-minor-mode nil
522 viper-replace-minor-mode nil
524 viper-insert-local-user-minor-mode nil
525 viper-insert-kbd-minor-mode nil
526 viper-insert-global-user-minor-mode nil
527 viper-insert-state-modifier-minor-mode nil
528 viper-insert-diehard-minor-mode nil
529 viper-insert-basic-minor-mode nil
530 viper-emacs-intercept-minor-mode t
531 viper-emacs-local-user-minor-mode t
532 viper-emacs-kbd-minor-mode (not (viper-is-in-minibuffer))
533 viper-emacs-global-user-minor-mode t
534 viper-emacs-state-modifier-minor-mode t
538 (if (eq state 'vi-state) ; adjust for vi-state
540 viper-vi-intercept-minor-mode t
541 viper-vi-minibuffer-minor-mode (viper-is-in-minibuffer)
542 viper-vi-local-user-minor-mode t
543 viper-vi-kbd-minor-mode (not (viper-is-in-minibuffer))
544 viper-vi-global-user-minor-mode t
545 viper-vi-state-modifier-minor-mode t
546 ;; don't let the diehard keymap block command completion
547 ;; and other things in the minibuffer
548 viper-vi-diehard-minor-mode (not
549 (or viper-want-emacs-keys-in-vi
550 (viper-is-in-minibuffer)))
551 viper-vi-basic-minor-mode t
552 viper-emacs-intercept-minor-mode nil
553 viper-emacs-local-user-minor-mode nil
554 viper-emacs-kbd-minor-mode nil
555 viper-emacs-global-user-minor-mode nil
556 viper-emacs-state-modifier-minor-mode nil
559 ;; Insert and Replace states
560 (if (member state '(insert-state replace-state))
562 viper-insert-intercept-minor-mode t
563 viper-replace-minor-mode (eq state 'replace-state)
564 viper-insert-minibuffer-minor-mode (viper-is-in-minibuffer)
565 viper-insert-local-user-minor-mode t
566 viper-insert-kbd-minor-mode (not (viper-is-in-minibuffer))
567 viper-insert-global-user-minor-mode t
568 viper-insert-state-modifier-minor-mode t
569 ;; don't let the diehard keymap block command completion
570 ;; and other things in the minibuffer
571 viper-insert-diehard-minor-mode (not
573 viper-want-emacs-keys-in-insert
574 (viper-is-in-minibuffer)))
575 viper-insert-basic-minor-mode t
576 viper-emacs-intercept-minor-mode nil
577 viper-emacs-local-user-minor-mode nil
578 viper-emacs-kbd-minor-mode nil
579 viper-emacs-global-user-minor-mode nil
580 viper-emacs-state-modifier-minor-mode nil
584 (if (viper-has-face-support-p)
585 (setq viper-minibuffer-current-face
586 (cond ((eq state 'emacs-state) viper-minibuffer-emacs-face)
587 ((eq state 'vi-state) viper-minibuffer-vi-face)
588 ((memq state '(insert-state replace-state))
589 viper-minibuffer-insert-face))))
591 (if (viper-is-in-minibuffer)
592 (viper-set-minibuffer-overlay))
595 ;; This also takes care of the annoying incomplete lines in files.
596 ;; Also, this fixes `undo' to work vi-style for complex commands.
597 (defun viper-change-state-to-vi ()
598 "Change Viper state to Vi."
600 (if (and viper-first-time (not (viper-is-in-minibuffer)))
602 (if overwrite-mode (overwrite-mode -1))
603 (or (viper-overlay-p viper-replace-overlay)
604 (viper-set-replace-overlay (point-min) (point-min)))
605 (viper-hide-replace-overlay)
606 (if abbrev-mode (expand-abbrev))
607 (if (and auto-fill-function (> (current-column) fill-column))
608 (funcall auto-fill-function))
609 ;; don't leave whitespace lines around
610 (if (and (memq last-command
612 viper-open-line viper-Open-line
613 viper-replace-state-exit-cmd))
614 (viper-over-whitespace-line))
615 (indent-to-left-margin))
616 (viper-add-newline-at-eob-if-necessary)
618 (viper-change-state 'vi-state)
620 (viper-restore-cursor-color 'after-insert-mode)
622 ;; Protect against user errors in hooks
623 (condition-case conds
624 (run-hooks 'viper-vi-state-hook)
626 (viper-message-conditions conds)))))
628 (defun viper-change-state-to-insert ()
629 "Change Viper state to Insert."
631 (viper-change-state 'insert-state)
633 (or (viper-overlay-p viper-replace-overlay)
634 (viper-set-replace-overlay (point-min) (point-min)))
635 (viper-hide-replace-overlay)
637 (let ((has-saved-cursor-color-in-insert-mode
638 (stringp (viper-get-saved-cursor-color-in-insert-mode))))
639 (or has-saved-cursor-color-in-insert-mode
640 (string= (viper-get-cursor-color) viper-insert-state-cursor-color)
641 (viper-save-cursor-color 'before-insert-mode))
642 (viper-change-cursor-color viper-insert-state-cursor-color))
644 ;; Protect against user errors in hooks
645 (condition-case conds
646 (run-hooks 'viper-insert-state-hook)
648 (viper-message-conditions conds))))
650 (defsubst viper-downgrade-to-insert ()
651 ;; Protect against user errors in hooks
652 (condition-case conds
653 (run-hooks 'viper-insert-state-hook)
655 (viper-message-conditions conds)))
656 (setq viper-current-state 'insert-state
657 viper-replace-minor-mode nil))
661 ;; Change to replace state. When the end of replacement region is reached,
662 ;; replace state changes to insert state.
663 (defun viper-change-state-to-replace (&optional non-R-cmd)
664 (viper-change-state 'replace-state)
665 ;; Run insert-state-hook
666 (condition-case conds
667 (run-hooks 'viper-insert-state-hook 'viper-replace-state-hook)
669 (viper-message-conditions conds)))
672 (viper-start-replace)
673 ;; 'R' is implemented using Emacs's overwrite-mode
674 (viper-start-R-mode))
678 (defun viper-change-state-to-emacs ()
679 "Change Viper state to Emacs."
681 (or (viper-overlay-p viper-replace-overlay)
682 (viper-set-replace-overlay (point-min) (point-min)))
683 (viper-hide-replace-overlay)
684 (viper-change-state 'emacs-state)
686 ;; Protect agains user errors in hooks
687 (condition-case conds
688 (run-hooks 'viper-emacs-state-hook)
690 (viper-message-conditions conds))))
692 ;; escape to emacs mode termporarily
693 (defun viper-escape-to-emacs (arg &optional events)
694 "Escape to Emacs state from Vi state for one Emacs command.
695 ARG is used as the prefix value for the executed command. If
696 EVENTS is a list of events, which become the beginning of the command."
698 (if (viper= last-command-char ?\\)
699 (message "Switched to EMACS state for the next command..."))
700 (viper-escape-to-state arg events 'emacs-state))
702 ;; escape to Vi mode termporarily
703 (defun viper-escape-to-vi (arg)
704 "Escape from Emacs state to Vi state for one Vi 1-character command.
705 If the Vi command that the user types has a prefix argument, e.g., `d2w', then
706 Vi's prefix argument will be used. Otherwise, the prefix argument passed to
707 `viper-escape-to-vi' is used."
709 (message "Switched to VI state for the next command...")
710 (viper-escape-to-state arg nil 'vi-state))
712 ;; Escape to STATE mode for one Emacs command.
713 (defun viper-escape-to-state (arg events state)
714 ;;(let (com key prefix-arg)
716 ;; this temporarily turns off Viper's minor mode keymaps
717 (viper-set-mode-vars-for state)
718 (viper-normalize-minor-mode-map-alist)
719 (if events (viper-set-unread-command-events events))
721 ;; protect against keyboard quit and other errors
723 (let (viper-vi-kbd-minor-mode
724 viper-insert-kbd-minor-mode
725 viper-emacs-kbd-minor-mode)
729 (key-binding (setq key (viper-read-key-sequence nil))))
730 ;; In case of binding indirection--chase definitions.
731 ;; Have to do it here because we execute this command under
732 ;; different keymaps, so command-execute may not do the
734 (while (vectorp com) (setq com (key-binding com))))
736 ;; Execute command com in the original Viper state, not in state
737 ;; `state'. Otherwise, if we switch buffers while executing the
738 ;; escaped to command, Viper's mode vars will remain those of
739 ;; `state'. When we return to the orig buffer, the bindings will be
741 (viper-set-mode-vars-for viper-current-state)
743 ;; this-command, last-command-char, last-command-event
744 (setq this-command com)
745 (if viper-xemacs-p ; XEmacs represents key sequences as vectors
746 (setq last-command-event
747 (viper-copy-event (viper-seq-last-elt key))
748 last-command-char (event-to-character last-command-event))
749 ;; Emacs represents them as sequences (str or vec)
750 (setq last-command-event
751 (viper-copy-event (viper-seq-last-elt key))
752 last-command-char last-command-event))
756 (setq prefix-arg (or prefix-arg arg))
757 (command-execute com)))
761 ;; set state in the new buffer
762 (viper-set-mode-vars-for viper-current-state))
764 ;; This is used in order to allow reading characters according to the input
765 ;; method. The character is read in emacs and inserted into the buffer.
766 ;; If an input method is in effect, this might
767 ;; cause several characters to be combined into one.
768 ;; Also takes care of the iso-accents mode
769 (defun viper-special-read-and-insert-char ()
770 (viper-set-mode-vars-for 'emacs-state)
771 (viper-normalize-minor-mode-map-alist)
772 (if viper-special-input-method
773 (viper-set-input-method t))
774 (if viper-automatic-iso-accents
775 (viper-set-iso-accents-mode t))
777 (let (viper-vi-kbd-minor-mode
778 viper-insert-kbd-minor-mode
779 viper-emacs-kbd-minor-mode
781 (cond ((and viper-special-input-method
783 (fboundp 'quail-input-method))
784 ;; (let ...) is used to restore unread-command-events to the
785 ;; original state. We don't want anything left in there after
786 ;; key translation. (Such left-overs are possible if the user
787 ;; types a regular key.)
788 (let (unread-command-events)
789 ;; The next 2 cmds are intended to prevent the input method
790 ;; from swallowing ^M, ^Q and other special characters
791 (setq ch (read-char))
792 (viper-set-unread-command-events ch)
793 (quail-input-method nil)
795 (if (and ch (string= quail-current-str ""))
797 (insert quail-current-str))
799 (aref quail-current-str
800 (1- (length quail-current-str)))))
802 ((and viper-special-input-method
804 (fboundp 'quail-start-translation))
805 ;; same as above but for XEmacs, which doesn't have
806 ;; quail-input-method
807 (let (unread-command-events)
808 (setq ch (read-char))
809 (viper-set-unread-command-events ch)
810 (quail-start-translation nil)
812 (if (and ch (string= quail-current-str ""))
814 (insert quail-current-str))
816 (aref quail-current-str
817 (1- (length quail-current-str)))))
819 ((and (boundp 'iso-accents-mode) iso-accents-mode)
820 (setq ch (aref (read-key-sequence nil) 0))
823 (setq ch (read-char))
826 (setq last-command-event
827 (viper-copy-event (if viper-xemacs-p
828 (character-to-event ch) ch)))
833 (viper-set-input-method nil)
834 (viper-set-iso-accents-mode nil)
835 (viper-set-mode-vars-for viper-current-state)
839 (defun viper-exec-form-in-vi (form)
840 "Execute FORM in Vi state, regardless of the Ccurrent Vi state."
841 (let ((buff (current-buffer))
843 (viper-set-mode-vars-for 'vi-state)
846 (let (viper-vi-kbd-minor-mode) ; execute without kbd macros
847 (setq result (eval form))
852 (if (not (equal buff (current-buffer))) ; cmd switched buffer
855 (viper-set-mode-vars-for viper-current-state)))
856 (viper-set-mode-vars-for viper-current-state)
859 (defun viper-exec-form-in-emacs (form)
860 "Execute FORM in Emacs, temporarily disabling Viper's minor modes.
861 Similar to viper-escape-to-emacs, but accepts forms rather than keystrokes."
862 (let ((buff (current-buffer))
864 (viper-set-mode-vars-for 'emacs-state)
865 (setq result (eval form))
866 (if (not (equal buff (current-buffer))) ; cmd switched buffer
869 (viper-set-mode-vars-for viper-current-state)))
870 (viper-set-mode-vars-for viper-current-state)
873 ;; This executes the last kbd event in emacs mode. Is used when we want to
874 ;; interpret certain keys directly in emacs (as, for example, in comint mode).
875 (defun viper-exec-key-in-emacs (arg)
877 (viper-escape-to-emacs arg last-command-event))
880 ;; This is needed because minor modes sometimes override essential Viper
881 ;; bindings. By letting Viper know which files these modes are in, it will
882 ;; arrange to reorganize minor-mode-map-alist so that things will work right.
883 (defun viper-harness-minor-mode (load-file)
884 "Familiarize Viper with a minor mode defined in LOAD_FILE.
885 Minor modes that have their own keymaps may overshadow Viper keymaps.
886 This function is designed to make Viper aware of the packages that define
889 (viper-harness-minor-mode load-file)
891 LOAD-FILE is a name of the file where the specific minor mode is defined.
892 Suffixes such as .el or .elc should be stripped."
894 (interactive "sEnter name of the load file: ")
896 (eval-after-load load-file '(viper-normalize-minor-mode-map-alist))
898 ;; Change the default for minor-mode-map-alist each time a harnessed minor
899 ;; mode adds its own keymap to the a-list.
901 load-file '(setq-default minor-mode-map-alist minor-mode-map-alist))
905 (defun viper-ESC (arg)
906 "Emulate ESC key in Emacs.
907 Prevents multiple escape keystrokes if viper-no-multiple-ESC is true.
908 If viper-no-multiple-ESC is 'twice double ESC would ding in vi-state.
909 Other ESC sequences are emulated via the current Emacs's major mode
910 keymap. This is more convenient on TTYs, since this won't block
911 function keys such as up,down, etc. ESC will also will also work as
912 a Meta key in this case. When viper-no-multiple-ESC is nil, ESC functions
913 as a Meta key and any number of multiple escapes is allowed."
916 (cond ((and (not viper-no-multiple-ESC) (eq viper-current-state 'vi-state))
917 (setq char (viper-read-char-exclusive))
918 (viper-escape-to-emacs arg (list ?\e char) ))
919 ((and (eq viper-no-multiple-ESC 'twice)
920 (eq viper-current-state 'vi-state))
921 (setq char (viper-read-char-exclusive))
922 (if (= char (string-to-char viper-ESC-key))
924 (viper-escape-to-emacs arg (list ?\e char) )))
928 (defun viper-alternate-Meta-key (arg)
929 "Simulate Emacs Meta key."
931 (sit-for 1) (message "ESC-")
932 (viper-escape-to-emacs arg '(?\e)))
934 (defun viper-toggle-key-action ()
935 "Action bound to `viper-toggle-key'."
937 (if (and (< viper-expert-level 2) (equal viper-toggle-key "\C-z"))
938 (if (viper-window-display-p)
941 (viper-change-state-to-emacs)))
944 ;; Intercept ESC sequences on dumb terminals.
945 ;; Based on the idea contributed by Marcelino Veiga Tuimil <mveiga@dit.upm.es>
947 ;; Check if last key was ESC and if so try to reread it as a function key.
948 ;; But only if there are characters to read during a very short time.
949 ;; Returns the last event, if any.
950 (defun viper-envelop-ESC-key ()
951 (let ((event last-input-event)
954 (if (viper-ESC-event-p event)
956 (if (viper-fast-keysequence-p)
958 (let (minor-mode-map-alist)
959 (viper-set-unread-command-events event)
960 (setq keyseq (read-key-sequence nil 'continue-echo))
962 ;; If keyseq translates into something that still has ESC
963 ;; at the beginning, separate ESC from the rest of the seq.
964 ;; In XEmacs we check for events that are keypress meta-key
965 ;; and convert them into [escape key]
967 ;; This is needed for the following reason:
968 ;; If ESC is the first symbol, we interpret it as if the
969 ;; user typed ESC and then quickly some other symbols.
970 ;; If ESC is not the first one, then the key sequence
971 ;; entered was apparently translated into a function key or
972 ;; something (e.g., one may have
973 ;; (define-key function-key-map "\e[192z" [f11])
974 ;; which would translate the escape-sequence generated by
975 ;; f11 in an xterm window into the symbolic key f11.
977 ;; If `first-key' is not an ESC event, we make it into the
978 ;; last-command-event in order to pretend that this key was
979 ;; pressed. This is needed to allow arrow keys to be bound to
980 ;; macros. Otherwise, viper-exec-mapped-kbd-macro will think
981 ;; that the last event was ESC and so it'll execute whatever is
982 ;; bound to ESC. (Viper macros can't be bound to
984 (let* ((first-key (elt keyseq 0))
985 (key-mod (event-modifiers first-key)))
986 (cond ((and (viper-ESC-event-p first-key)
987 (not viper-translate-all-ESC-keysequences))
988 ;; put keys following ESC on the unread list
989 ;; and return ESC as the key-sequence
990 (viper-set-unread-command-events (subseq keyseq 1))
991 (setq last-input-event event
992 keyseq (if viper-emacs-p
994 (vector (character-to-event ?\e)))))
996 (key-press-event-p first-key)
997 (equal '(meta) key-mod))
998 (viper-set-unread-command-events
1000 (character-to-event (event-key first-key)))
1002 (setq last-input-event event
1003 keyseq (vector (character-to-event ?\e))))
1005 (setq last-command-event
1006 (viper-copy-event first-key)))
1010 ;; this is escape event with nothing after it
1011 ;; put in unread-command-event and then re-read
1012 (viper-set-unread-command-events event)
1013 (setq keyseq (read-key-sequence nil))
1015 ;; not an escape event
1016 (setq keyseq (vector event)))
1021 ;; Listen to ESC key.
1022 ;; If a sequence of keys starting with ESC is issued with very short delays,
1023 ;; interpret these keys in Emacs mode, so ESC won't be interpreted as a Vi key.
1024 (defun viper-intercept-ESC-key ()
1025 "Function that implements ESC key in Viper emulation of Vi."
1027 (let ((cmd (or (key-binding (viper-envelop-ESC-key))
1028 '(lambda () (interactive) (error "")))))
1030 ;; call the actual function to execute ESC (if no other symbols followed)
1031 ;; or the key bound to the ESC sequence (if the sequence was issued
1032 ;; with very short delay between characters.
1033 (if (eq cmd 'viper-intercept-ESC-key)
1035 (cond ((eq viper-current-state 'vi-state)
1037 ((eq viper-current-state 'insert-state)
1038 'viper-exit-insert-state)
1039 ((eq viper-current-state 'replace-state)
1040 'viper-replace-state-exit-cmd)
1041 (t 'viper-change-state-to-vi)
1043 (call-interactively cmd)))
1048 ;; prefix argument for Vi mode
1050 ;; In Vi mode, prefix argument is a dotted pair (NUM . COM) where NUM
1051 ;; represents the numeric value of the prefix argument and COM represents
1052 ;; command prefix such as "c", "d", "m" and "y".
1054 ;; Get value part of prefix-argument ARG.
1055 (defsubst viper-p-val (arg)
1056 (cond ((null arg) 1)
1058 (if (or (null (car arg)) (equal (car arg) '(nil)))
1062 ;; Get raw value part of prefix-argument ARG.
1063 (defsubst viper-P-val (arg)
1064 (cond ((consp arg) (car arg))
1067 ;; Get com part of prefix-argument ARG.
1068 (defsubst viper-getcom (arg)
1069 (cond ((null arg) nil)
1070 ((consp arg) (cdr arg))
1073 ;; Get com part of prefix-argument ARG and modify it.
1074 (defun viper-getCom (arg)
1075 (let ((com (viper-getcom arg)))
1076 (cond ((viper= com ?c) ?c)
1077 ;; Previously, ?c was being converted to ?C, but this prevented
1078 ;; multiline replace regions.
1079 ;;((viper= com ?c) ?C)
1080 ((viper= com ?d) ?D)
1081 ((viper= com ?y) ?Y)
1085 ;; Compute numeric prefix arg value.
1086 ;; Invoked by EVENT-CHAR. COM is the command part obtained so far.
1087 (defun viper-prefix-arg-value (event-char com)
1088 (let ((viper-intermediate-command 'viper-digit-argument)
1090 ;; read while number
1091 (while (and (viper-characterp event-char)
1092 (>= event-char ?0) (<= event-char ?9))
1093 (setq value (+ (* (if (integerp value) value 0) 10) (- event-char ?0)))
1094 (setq event-char (viper-read-event-convert-to-char)))
1096 (setq prefix-arg value)
1097 (if com (setq prefix-arg (cons prefix-arg com)))
1098 (while (eq event-char ?U)
1099 (viper-describe-arg prefix-arg)
1100 (setq event-char (viper-read-event-convert-to-char)))
1102 (if (or com (and (not (eq viper-current-state 'vi-state))
1103 ;; make sure it is a Vi command
1104 (viper-characterp event-char)
1105 (viper-vi-command-p event-char)
1107 ;; If appears to be one of the vi commands,
1108 ;; then execute it with funcall and clear prefix-arg in order to not
1109 ;; confuse subsequent commands
1111 ;; last-command-char is the char we want emacs to think was typed
1112 ;; last. If com is not nil, the viper-digit-argument command was
1113 ;; called from within viper-prefix-arg command, such as `d', `w',
1114 ;; etc., i.e., the user typed, say, d2. In this case, `com' would be
1115 ;; `d', `w', etc. If viper-digit-argument was invoked by
1116 ;; viper-escape-to-vi (which is indicated by the fact that the
1117 ;; current state is not vi-state), then `event-char' represents the
1118 ;; vi command to be executed (e.g., `d', `w', etc). Again,
1119 ;; last-command-char must make emacs believe that this is the command
1121 (cond ((eq event-char 'return) (setq event-char ?\C-m))
1122 ((eq event-char 'delete) (setq event-char ?\C-?))
1123 ((eq event-char 'backspace) (setq event-char ?\C-h))
1124 ((eq event-char 'space) (setq event-char ?\ )))
1125 (setq last-command-char (or com event-char))
1126 (setq func (viper-exec-form-in-vi
1127 `(key-binding (char-to-string ,event-char))))
1128 (funcall func prefix-arg)
1129 (setq prefix-arg nil))
1130 ;; some other command -- let emacs do it in its own way
1131 (viper-set-unread-command-events event-char))
1135 ;; Vi operator as prefix argument."
1136 (defun viper-prefix-arg-com (char value com)
1141 (viper-memq-char char
1142 (list ?c ?d ?y ?! ?< ?> ?= ?# ?r ?R ?\"
1143 viper-buffer-search-char)))
1145 ;; this means that we already have a command character, so we
1146 ;; construct a com list and exit while. however, if char is "
1149 ;; new com is (CHAR . OLDCOM)
1150 (if (viper-memq-char char '(?# ?\")) (error ""))
1151 (setq com (cons char com))
1153 ;; If com is nil we set com as char, and read more. Again, if char is
1154 ;; ", we read the name of register and store it in viper-use-register.
1155 ;; if char is !, =, or #, a complete com is formed so we exit the while
1157 (cond ((viper-memq-char char '(?! ?=))
1159 (setq char (read-char))
1162 ;; read a char and encode it as com
1163 (setq com (+ 128 (read-char)))
1164 (setq char (read-char)))
1166 (let ((reg (read-char)))
1167 (if (viper-valid-register reg)
1168 (setq viper-use-register reg)
1170 (setq char (read-char))))
1173 (setq char (read-char))))))
1176 ;; `com' is a single char, so we construct the command argument
1177 ;; and if `char' is `?', we describe the arg; otherwise
1178 ;; we prepare the command that will be executed at the end.
1180 (setq cmd-info (cons value com))
1181 (while (viper= char ?U)
1182 (viper-describe-arg cmd-info)
1183 (setq char (read-char)))
1184 ;; `char' is a movement cmd, a digit arg cmd, or a register cmd---so we
1185 ;; execute it at the very end
1186 (or (viper-movement-command-p char)
1187 (viper-digit-command-p char)
1188 (viper-regsuffix-command-p char)
1189 (viper= char ?!) ; bang command
1191 (setq cmd-to-exec-at-end
1192 (viper-exec-form-in-vi
1193 `(key-binding (char-to-string ,char)))))
1195 ;; as com is non-nil, this means that we have a command to execute
1196 (if (viper-memq-char (car com) '(?r ?R))
1197 ;; execute apropriate region command.
1198 (let ((char (car com)) (com (cdr com)))
1199 (setq prefix-arg (cons value com))
1200 (if (viper= char ?r)
1201 (viper-region prefix-arg)
1202 (viper-Region prefix-arg))
1204 (setq prefix-arg nil))
1205 ;; otherwise, reset prefix arg and call appropriate command
1206 (setq value (if (null value) 1 value))
1207 (setq prefix-arg nil)
1209 ;; If we change ?C to ?c here, then cc will enter replacement mode
1210 ;; rather than deleting lines. However, it will affect 1 less line than
1211 ;; normal. We decided to not use replacement mode here and follow Vi,
1212 ;; since replacement mode on n full lines can be achieved with nC.
1213 ((equal com '(?c . ?c)) (viper-line (cons value ?C)))
1214 ((equal com '(?d . ?d)) (viper-line (cons value ?D)))
1215 ((equal com '(?d . ?y)) (viper-yank-defun))
1216 ((equal com '(?y . ?y)) (viper-line (cons value ?Y)))
1217 ((equal com '(?< . ?<)) (viper-line (cons value ?<)))
1218 ((equal com '(?> . ?>)) (viper-line (cons value ?>)))
1219 ((equal com '(?! . ?!)) (viper-line (cons value ?!)))
1220 ((equal com '(?= . ?=)) (viper-line (cons value ?=)))
1223 (if cmd-to-exec-at-end
1225 (setq last-command-char char)
1226 (setq last-command-event
1228 (if viper-xemacs-p (character-to-event char) char)))
1230 (funcall cmd-to-exec-at-end cmd-info)
1235 (defun viper-describe-arg (arg)
1237 (setq val (viper-P-val arg)
1238 com (viper-getcom arg))
1241 (message "Value is nil, and command is nil")
1242 (message "Value is nil, and command is `%c'" com))
1244 (message "Value is `%d', and command is nil" val)
1245 (message "Value is `%d', and command is `%c'" val com)))))
1247 (defun viper-digit-argument (arg)
1248 "Begin numeric argument for the next command."
1250 (viper-leave-region-active)
1251 (viper-prefix-arg-value
1252 last-command-char (if (consp arg) (cdr arg) nil)))
1254 (defun viper-command-argument (arg)
1255 "Accept a motion command as an argument."
1257 (let ((viper-intermediate-command 'viper-command-argument))
1259 (viper-prefix-arg-com
1261 (cond ((null arg) nil)
1262 ((consp arg) (car arg))
1263 ((integerp arg) arg)
1264 (t (error viper-InvalidCommandArgument)))
1265 (cond ((null arg) nil)
1266 ((consp arg) (cdr arg))
1267 ((integerp arg) nil)
1268 (t (error viper-InvalidCommandArgument))))
1269 (quit (setq viper-use-register nil)
1270 (signal 'quit nil)))
1271 (viper-deactivate-mark)))
1274 ;; repeat last destructive command
1276 ;; Append region to text in register REG.
1277 ;; START and END are buffer positions indicating what to append.
1278 (defsubst viper-append-to-register (reg start end)
1279 (set-register reg (concat (if (stringp (get-register reg))
1280 (get-register reg) "")
1281 (buffer-substring start end))))
1283 ;; Saves last inserted text for possible use by viper-repeat command.
1284 (defun viper-save-last-insertion (beg end)
1286 (setq viper-last-insertion (buffer-substring beg end))
1288 ;; beg or end marker are somehow screwed up
1289 (setq viper-last-insertion nil)))
1290 (setq viper-last-insertion (buffer-substring beg end))
1291 (or (< (length viper-d-com) 5)
1292 (setcar (nthcdr 4 viper-d-com) viper-last-insertion))
1293 (or (null viper-command-ring)
1294 (ring-empty-p viper-command-ring)
1296 (setcar (nthcdr 4 (viper-current-ring-item viper-command-ring))
1297 viper-last-insertion)
1298 ;; del most recent elt, if identical to the second most-recent
1299 (viper-cleanup-ring viper-command-ring)))
1302 (defsubst viper-yank-last-insertion ()
1303 "Inserts the text saved by the previous viper-save-last-insertion command."
1305 (insert viper-last-insertion)
1309 ;; define functions to be executed
1311 ;; invoked by the `C' command
1312 (defun viper-exec-change (m-com com)
1313 (or (and (markerp viper-com-point) (marker-position viper-com-point))
1314 (set-marker viper-com-point (point) (current-buffer)))
1315 ;; handle C cmd at the eol and at eob.
1316 (if (or (and (eolp) (= viper-com-point (point)))
1317 (= viper-com-point (point-max)))
1319 (insert " ")(backward-char 1)))
1320 (if (= viper-com-point (point))
1321 (viper-forward-char-carefully))
1322 (set-mark viper-com-point)
1323 (if (eq m-com 'viper-next-line-at-bol)
1324 (viper-enlarge-region (mark t) (point)))
1325 (if (< (point) (mark t))
1326 (exchange-point-and-mark))
1327 (if (eq (preceding-char) ?\n)
1328 (viper-backward-char-carefully)) ; give back the newline
1329 (if (eq viper-intermediate-command 'viper-repeat)
1330 (viper-change-subr (mark t) (point))
1331 (viper-change (mark t) (point))
1334 ;; this is invoked by viper-substitute-line
1335 (defun viper-exec-Change (m-com com)
1337 (set-mark viper-com-point)
1338 (viper-enlarge-region (mark t) (point))
1339 (if viper-use-register
1341 (cond ((viper-valid-register viper-use-register '(letter digit))
1343 viper-use-register (mark t) (point) nil))
1344 ((viper-valid-register viper-use-register '(Letter))
1345 (viper-append-to-register
1346 (downcase viper-use-register) (mark t) (point)))
1347 (t (setq viper-use-register nil)
1348 (error viper-InvalidRegister viper-use-register)))
1349 (setq viper-use-register nil)))
1350 (delete-region (mark t) (point)))
1352 (if (eq viper-intermediate-command 'viper-repeat)
1353 (viper-yank-last-insertion)
1354 (viper-change-state-to-insert)
1357 (defun viper-exec-delete (m-com com)
1358 (or (and (markerp viper-com-point) (marker-position viper-com-point))
1359 (set-marker viper-com-point (point) (current-buffer)))
1360 (let (chars-deleted)
1361 (if viper-use-register
1363 (cond ((viper-valid-register viper-use-register '(letter digit))
1365 viper-use-register viper-com-point (point) nil))
1366 ((viper-valid-register viper-use-register '(Letter))
1367 (viper-append-to-register
1368 (downcase viper-use-register) viper-com-point (point)))
1369 (t (setq viper-use-register nil)
1370 (error viper-InvalidRegister viper-use-register)))
1371 (setq viper-use-register nil)))
1373 (if (eq last-command 'd-command) 'kill-region nil))
1374 (setq chars-deleted (abs (- (point) viper-com-point)))
1375 (if (> chars-deleted viper-change-notification-threshold)
1376 (message "Deleted %d characters" chars-deleted))
1377 (kill-region viper-com-point (point))
1378 (setq this-command 'd-command)
1379 (if viper-ex-style-motion
1380 (if (and (eolp) (not (bolp))) (backward-char 1)))))
1382 (defun viper-exec-Delete (m-com com)
1384 (set-mark viper-com-point)
1385 (viper-enlarge-region (mark t) (point))
1386 (let (lines-deleted)
1387 (if viper-use-register
1389 (cond ((viper-valid-register viper-use-register '(letter digit))
1391 viper-use-register (mark t) (point) nil))
1392 ((viper-valid-register viper-use-register '(Letter))
1393 (viper-append-to-register
1394 (downcase viper-use-register) (mark t) (point)))
1395 (t (setq viper-use-register nil)
1396 (error viper-InvalidRegister viper-use-register)))
1397 (setq viper-use-register nil)))
1399 (if (eq last-command 'D-command) 'kill-region nil))
1400 (setq lines-deleted (count-lines (point) viper-com-point))
1401 (if (> lines-deleted viper-change-notification-threshold)
1402 (message "Deleted %d lines" lines-deleted))
1403 (kill-region (mark t) (point))
1404 (if (eq m-com 'viper-line) (setq this-command 'D-command)))
1405 (back-to-indentation)))
1408 (defun viper-exec-yank (m-com com)
1409 (or (and (markerp viper-com-point) (marker-position viper-com-point))
1410 (set-marker viper-com-point (point) (current-buffer)))
1412 (if viper-use-register
1414 (cond ((viper-valid-register viper-use-register '(letter digit))
1416 viper-use-register viper-com-point (point) nil))
1417 ((viper-valid-register viper-use-register '(Letter))
1418 (viper-append-to-register
1419 (downcase viper-use-register) viper-com-point (point)))
1420 (t (setq viper-use-register nil)
1421 (error viper-InvalidRegister viper-use-register)))
1422 (setq viper-use-register nil)))
1423 (setq last-command nil)
1424 (copy-region-as-kill viper-com-point (point))
1425 (setq chars-saved (abs (- (point) viper-com-point)))
1426 (if (> chars-saved viper-change-notification-threshold)
1427 (message "Saved %d characters" chars-saved))
1428 (goto-char viper-com-point)))
1431 (defun viper-exec-Yank (m-com com)
1433 (set-mark viper-com-point)
1434 (viper-enlarge-region (mark t) (point))
1436 (if viper-use-register
1438 (cond ((viper-valid-register viper-use-register '(letter digit))
1440 viper-use-register (mark t) (point) nil))
1441 ((viper-valid-register viper-use-register '(Letter))
1442 (viper-append-to-register
1443 (downcase viper-use-register) (mark t) (point)))
1444 (t (setq viper-use-register nil)
1445 (error viper-InvalidRegister viper-use-register)))
1446 (setq viper-use-register nil)))
1447 (setq last-command nil)
1448 (copy-region-as-kill (mark t) (point))
1449 (setq lines-saved (count-lines (mark t) (point)))
1450 (if (> lines-saved viper-change-notification-threshold)
1451 (message "Saved %d lines" lines-saved))))
1452 (viper-deactivate-mark)
1453 (goto-char viper-com-point))
1455 (defun viper-exec-bang (m-com com)
1457 (set-mark viper-com-point)
1458 (viper-enlarge-region (mark t) (point))
1459 (exchange-point-and-mark)
1460 (shell-command-on-region
1463 (setq viper-last-shell-com
1464 (viper-read-string-with-history
1467 'viper-shell-history
1468 (car viper-shell-history)
1470 viper-last-shell-com)
1473 (defun viper-exec-equals (m-com com)
1475 (set-mark viper-com-point)
1476 (viper-enlarge-region (mark t) (point))
1477 (if (> (mark t) (point)) (exchange-point-and-mark))
1478 (indent-region (mark t) (point) nil)))
1480 (defun viper-exec-shift (m-com com)
1482 (set-mark viper-com-point)
1483 (viper-enlarge-region (mark t) (point))
1484 (if (> (mark t) (point)) (exchange-point-and-mark))
1485 (indent-rigidly (mark t) (point)
1488 (- viper-shift-width))))
1489 ;; return point to where it was before shift
1490 (goto-char viper-com-point))
1492 ;; this is needed because some commands fake com by setting it to ?r, which
1493 ;; denotes repeated insert command.
1494 (defsubst viper-exec-dummy (m-com com)
1497 (defun viper-exec-buffer-search (m-com com)
1498 (setq viper-s-string (buffer-substring (point) viper-com-point))
1499 (setq viper-s-forward t)
1500 (setq viper-search-history (cons viper-s-string viper-search-history))
1501 (setq viper-intermediate-command 'viper-exec-buffer-search)
1502 (viper-search viper-s-string viper-s-forward 1))
1504 (defvar viper-exec-array (make-vector 128 nil))
1506 ;; Using a dispatch array allows adding functions like buffer search
1507 ;; without affecting other functions. Buffer search can now be bound
1508 ;; to any character.
1510 (aset viper-exec-array ?c 'viper-exec-change)
1511 (aset viper-exec-array ?C 'viper-exec-Change)
1512 (aset viper-exec-array ?d 'viper-exec-delete)
1513 (aset viper-exec-array ?D 'viper-exec-Delete)
1514 (aset viper-exec-array ?y 'viper-exec-yank)
1515 (aset viper-exec-array ?Y 'viper-exec-Yank)
1516 (aset viper-exec-array ?r 'viper-exec-dummy)
1517 (aset viper-exec-array ?! 'viper-exec-bang)
1518 (aset viper-exec-array ?< 'viper-exec-shift)
1519 (aset viper-exec-array ?> 'viper-exec-shift)
1520 (aset viper-exec-array ?= 'viper-exec-equals)
1524 ;; This function is called by various movement commands to execute a
1525 ;; destructive command on the region specified by the movement command. For
1526 ;; instance, if the user types cw, then the command viper-forward-word will
1527 ;; call viper-execute-com to execute viper-exec-change, which eventually will
1528 ;; call viper-change to invoke the replace mode on the region.
1530 ;; The var viper-d-com is set to (M-COM VAL COM REG INSETED-TEXT COMMAND-KEYS)
1531 ;; via a call to viper-set-destructive-command, for later use by viper-repeat.
1532 (defun viper-execute-com (m-com val com)
1533 (let ((reg viper-use-register))
1534 ;; this is the special command `#'
1536 (viper-special-prefix-com (- com 128))
1537 (let ((fn (aref viper-exec-array com)))
1539 (error "%c: %s" com viper-InvalidViCommand)
1540 (funcall fn m-com com))))
1541 (if (viper-dotable-command-p com)
1542 (viper-set-destructive-command
1543 (list m-com val com reg nil nil)))
1547 (defun viper-repeat (arg)
1548 "Re-execute last destructive command.
1549 Use the info in viper-d-com, which has the form
1550 \(com val ch reg inserted-text command-keys\),
1551 where `com' is the command to be re-executed, `val' is the
1552 argument to `com', `ch' is a flag for repeat, and `reg' is optional;
1553 if it exists, it is the name of the register for `com'.
1554 If the prefix argument, ARG, is non-nil, it is used instead of `val'."
1556 (let ((save-point (point)) ; save point before repeating prev cmd
1557 ;; Pass along that we are repeating a destructive command
1558 ;; This tells viper-set-destructive-command not to update
1559 ;; viper-command-ring
1560 (viper-intermediate-command 'viper-repeat))
1561 (if (eq last-command 'viper-undo)
1562 ;; if the last command was viper-undo, then undo-more
1564 ;; otherwise execute the command stored in viper-d-com. if arg is
1565 ;; non-nil its prefix value is used as new prefix value for the command.
1566 (let ((m-com (car viper-d-com))
1567 (val (viper-P-val arg))
1568 (com (nth 2 viper-d-com))
1569 (reg (nth 3 viper-d-com)))
1570 (if (null val) (setq val (nth 1 viper-d-com)))
1571 (if (null m-com) (error "No previous command to repeat"))
1572 (setq viper-use-register reg)
1573 (if (nth 4 viper-d-com) ; text inserted by command
1574 (setq viper-last-insertion (nth 4 viper-d-com)
1575 viper-d-char (nth 4 viper-d-com)))
1576 (funcall m-com (cons val com))
1577 (cond ((and (< save-point (point)) viper-keep-point-on-repeat)
1578 (goto-char save-point)) ; go back to before repeat.
1579 ((and (< save-point (point)) viper-ex-style-editing)
1580 (or (bolp) (backward-char 1))))
1581 (if (and (eolp) (not (bolp)))
1584 (viper-adjust-undo) ; take care of undo
1585 ;; If the prev cmd was rotating the command ring, this means that `.' has
1586 ;; just executed a command from that ring. So, push it on the ring again.
1587 ;; If we are just executing previous command , then don't push viper-d-com
1588 ;; because viper-d-com is not fully constructed in this case (its keys and
1589 ;; the inserted text may be nil). Besides, in this case, the command
1590 ;; executed by `.' is already on the ring.
1591 (if (eq last-command 'viper-display-current-destructive-command)
1592 (viper-push-onto-ring viper-d-com 'viper-command-ring))
1593 (viper-deactivate-mark)
1596 (defun viper-repeat-from-history ()
1597 "Repeat a destructive command from history.
1598 Doesn't change viper-command-ring in any way, so `.' will work as before
1599 executing this command.
1600 This command is supposed to be bound to a two-character Vi macro where
1601 the second character is a digit 0 to 9. The digit indicates which
1602 history command to execute. `<char>0' is equivalent to `.', `<char>1'
1603 invokes the command before that, etc."
1605 (let* ((viper-intermediate-command 'repeating-display-destructive-command)
1606 (idx (cond (viper-this-kbd-macro
1608 (symbol-name (elt viper-this-kbd-macro 1))))
1611 (viper-d-com viper-d-com))
1613 (or (and (numberp num) (<= 0 num) (<= num 9))
1618 "`viper-repeat-from-history' must be invoked as a Vi macro bound to `<key><digit>'")))
1620 (setq viper-d-com (viper-special-ring-rotate1 viper-command-ring -1))
1621 (setq num (1- num)))
1624 (viper-special-ring-rotate1 viper-command-ring 1)
1625 (setq num (1+ num)))
1629 ;; The hash-command. It is invoked interactively by the key sequence #<char>.
1630 ;; The chars that can follow `#' are determined by viper-hash-command-p
1631 (defun viper-special-prefix-com (char)
1632 (cond ((viper= char ?c)
1633 (downcase-region (min viper-com-point (point))
1634 (max viper-com-point (point))))
1636 (upcase-region (min viper-com-point (point))
1637 (max viper-com-point (point))))
1639 (push-mark viper-com-point t)
1640 (viper-global-execute))
1642 (push-mark viper-com-point t)
1643 (viper-quote-region))
1645 (funcall viper-spell-function viper-com-point (point)))
1646 (t (error "#%c: %s" char viper-InvalidViCommand))))
1651 (defun viper-undo ()
1652 "Undo previous change."
1655 (let ((modified (buffer-modified-p))
1656 (before-undo-pt (point-marker))
1657 (after-change-functions after-change-functions)
1658 undo-beg-posn undo-end-posn)
1660 ;; no need to remove this hook, since this var has scope inside a let.
1661 (add-hook 'after-change-functions
1662 '(lambda (beg end len)
1663 (setq undo-beg-posn beg
1664 undo-end-posn (or end beg))))
1668 (setq undo-beg-posn (or undo-beg-posn before-undo-pt)
1669 undo-end-posn (or undo-end-posn undo-beg-posn))
1671 (goto-char undo-beg-posn)
1673 (if (and viper-keep-point-on-undo
1674 (pos-visible-in-window-p before-undo-pt))
1676 (push-mark (point-marker) t)
1677 (viper-sit-for-short 300)
1678 (goto-char undo-end-posn)
1679 (viper-sit-for-short 300)
1680 (if (and (> (viper-chars-in-region undo-beg-posn before-undo-pt) 1)
1681 (> (viper-chars-in-region undo-end-posn before-undo-pt) 1))
1682 (goto-char before-undo-pt)
1683 (goto-char undo-beg-posn)))
1684 (push-mark before-undo-pt t))
1685 (if (and (eolp) (not (bolp))) (backward-char 1))
1686 (if (not modified) (set-buffer-modified-p t)))
1687 (setq this-command 'viper-undo))
1689 ;; Continue undoing previous changes.
1690 (defun viper-undo-more ()
1691 (message "undo more!")
1695 (message "No further undo information in this buffer")))
1696 (if (and (eolp) (not (bolp))) (backward-char 1))
1697 (setq this-command 'viper-undo))
1699 ;; The following two functions are used to set up undo properly.
1700 ;; In VI, unlike Emacs, if you open a line, say, and add a bunch of lines,
1701 ;; they are undone all at once.
1702 (defun viper-adjust-undo ()
1703 (if viper-undo-needs-adjustment
1704 (let ((inhibit-quit t)
1706 (setq viper-undo-needs-adjustment nil)
1707 (if (listp buffer-undo-list)
1708 (if (setq tmp (memq viper-buffer-undo-list-mark buffer-undo-list))
1710 (setq tmp2 (cdr tmp)) ; the part after mark
1712 ;; cut tail from buffer-undo-list temporarily by direct
1713 ;; manipulation with pointers in buffer-undo-list
1716 (setq buffer-undo-list (delq nil buffer-undo-list))
1717 (setq buffer-undo-list
1718 (delq viper-buffer-undo-list-mark buffer-undo-list))
1719 ;; restore tail of buffer-undo-list
1720 (setq buffer-undo-list (nconc buffer-undo-list tmp2)))
1721 (setq buffer-undo-list (delq nil buffer-undo-list)))))
1725 (defun viper-set-complex-command-for-undo ()
1726 (if (listp buffer-undo-list)
1727 (if (not viper-undo-needs-adjustment)
1728 (let ((inhibit-quit t))
1729 (setq buffer-undo-list
1730 (cons viper-buffer-undo-list-mark buffer-undo-list))
1731 (setq viper-undo-needs-adjustment t)))))
1736 (defun viper-display-current-destructive-command ()
1737 (let ((text (nth 4 viper-d-com))
1738 (keys (nth 5 viper-d-com))
1741 (setq this-command 'viper-display-current-destructive-command)
1743 (message " `.' runs %s%s"
1744 (concat "`" (viper-array-to-string keys) "'")
1745 (viper-abbreviate-string
1748 (cond ((characterp text) (char-to-string text))
1749 ((stringp text) text)
1754 " inserting `" "'" " ......."))
1758 ;; don't change viper-d-com if it was viper-repeat command invoked with `.'
1759 ;; or in some other way (non-interactively).
1760 (defun viper-set-destructive-command (list)
1761 (or (eq viper-intermediate-command 'viper-repeat)
1763 (setq viper-d-com list)
1764 (setcar (nthcdr 5 viper-d-com)
1765 (viper-array-to-string (if (arrayp viper-this-command-keys)
1766 viper-this-command-keys
1767 (this-command-keys))))
1768 (viper-push-onto-ring viper-d-com 'viper-command-ring)))
1769 (setq viper-this-command-keys nil))
1772 (defun viper-prev-destructive-command (next)
1773 "Find previous destructive command in the history of destructive commands.
1774 With prefix argument, find next destructive command."
1776 (let (cmd viper-intermediate-command)
1777 (if (eq last-command 'viper-display-current-destructive-command)
1778 ;; repeated search through command history
1779 (setq viper-intermediate-command
1780 'repeating-display-destructive-command)
1781 ;; first search through command history--set temp ring
1782 (setq viper-temp-command-ring (copy-list viper-command-ring)))
1784 (viper-special-ring-rotate1 viper-temp-command-ring 1)
1785 (viper-special-ring-rotate1 viper-temp-command-ring -1)))
1788 (setq viper-d-com cmd))
1789 (viper-display-current-destructive-command)))
1792 (defun viper-next-destructive-command ()
1793 "Find next destructive command in the history of destructive commands."
1795 (viper-prev-destructive-command 'next))
1798 (defun viper-insert-prev-from-insertion-ring (arg)
1799 "Cycle through insertion ring in the direction of older insertions.
1800 Undoes previous insertion and inserts new.
1801 With prefix argument, cycles in the direction of newer elements.
1802 In minibuffer, this command executes whatever the invocation key is bound
1803 to in the global map, instead of cycling through the insertion ring."
1805 (let (viper-intermediate-command)
1806 (if (eq last-command 'viper-insert-from-insertion-ring)
1807 (progn ; repeated search through insertion history
1808 (setq viper-intermediate-command 'repeating-insertion-from-ring)
1809 (if (eq viper-current-state 'replace-state)
1811 (if viper-last-inserted-string-from-insertion-ring
1812 (backward-delete-char
1813 (length viper-last-inserted-string-from-insertion-ring))))
1815 ;;first search through insertion history
1816 (setq viper-temp-insertion-ring (copy-list viper-insertion-ring)))
1817 (setq this-command 'viper-insert-from-insertion-ring)
1818 ;; so that things will be undone properly
1819 (setq buffer-undo-list (cons nil buffer-undo-list))
1820 (setq viper-last-inserted-string-from-insertion-ring
1821 (viper-special-ring-rotate1 viper-temp-insertion-ring (if arg 1 -1)))
1823 ;; this change of viper-intermediate-command must come after
1824 ;; viper-special-ring-rotate1, so that the ring will rotate, but before the
1826 (setq viper-intermediate-command nil)
1827 (if viper-last-inserted-string-from-insertion-ring
1828 (insert viper-last-inserted-string-from-insertion-ring))
1831 (defun viper-insert-next-from-insertion-ring ()
1832 "Cycle through insertion ring in the direction of older insertions.
1833 Undo previous insertion and inserts new."
1835 (viper-insert-prev-from-insertion-ring 'next))
1839 ;; some region utilities
1841 ;; If at the last line of buffer, add \\n before eob, if newline is missing.
1842 (defun viper-add-newline-at-eob-if-necessary ()
1845 ;; make sure all lines end with newline, unless in the minibuffer or
1846 ;; when requested otherwise (require-final-newline is nil)
1849 require-final-newline
1850 (not (viper-is-in-minibuffer))
1851 (not buffer-read-only))
1854 (defun viper-yank-defun ()
1856 (copy-region-as-kill (point) (mark t)))
1858 ;; Enlarge region between BEG and END.
1859 (defun viper-enlarge-region (beg end)
1860 (or beg (setq beg end)) ; if beg is nil, set to end
1861 (or end (setq end beg)) ; if end is nil, set to beg
1864 (progn (goto-char beg) (set-mark end))
1868 (exchange-point-and-mark)
1869 (if (or (not (eobp)) (not (bolp))) (forward-line 1))
1870 (if (not (eobp)) (beginning-of-line))
1871 (if (> beg end) (exchange-point-and-mark)))
1874 ;; Quote region by each line with a user supplied string.
1875 (defun viper-quote-region ()
1876 (let ((quote-str viper-quote-string)
1877 (donot-change-dafault t))
1879 (viper-read-string-with-history
1882 'viper-quote-region-history
1883 (cond ((string-match "tex.*-mode" (symbol-name major-mode)) "%%")
1884 ((string-match "java.*-mode" (symbol-name major-mode)) "//")
1885 ((string-match "perl.*-mode" (symbol-name major-mode)) "#")
1886 ((string-match "lisp.*-mode" (symbol-name major-mode)) ";;")
1887 ((memq major-mode '(c-mode cc-mode c++-mode)) "//")
1888 ((memq major-mode '(sh-mode shell-mode)) "#")
1889 (t (setq donot-change-dafault nil)
1891 (or donot-change-dafault
1892 (setq viper-quote-string quote-str))
1893 (viper-enlarge-region (point) (mark t))
1894 (if (> (point) (mark t)) (exchange-point-and-mark))
1898 (while (and (< (point) (mark t)) (bolp))
1903 ;; Tells whether BEG is on the same line as END.
1904 ;; If one of the args is nil, it'll return nil.
1905 (defun viper-same-line (beg end)
1906 (let ((selective-display nil)
1909 (if (and beg end (> beg end))
1914 (cond ((or (> beg (point-max)) (> end (point-max))) ; out of range
1917 ;; This 'if' is needed because Emacs treats the next empty line
1918 ;; as part of the previous line.
1919 (if (= (viper-line-pos 'start) end)
1921 (<= (+ incr (count-lines beg end)) 1))))
1925 ;; Check if the string ends with a newline.
1926 (defun viper-end-with-a-newline-p (string)
1927 (or (string= string "")
1928 (= (viper-seq-last-elt string) ?\n)))
1930 (defun viper-tmp-insert-at-eob (msg)
1931 (let ((savemax (point-max)))
1935 (goto-char savemax) (delete-region (point) (point-max))
1940 ;;; Minibuffer business
1942 (defsubst viper-set-minibuffer-style ()
1943 (add-hook 'minibuffer-setup-hook 'viper-minibuffer-setup-sentinel))
1946 (defun viper-minibuffer-setup-sentinel ()
1947 (let ((hook (if viper-vi-style-in-minibuffer
1948 'viper-change-state-to-insert
1949 'viper-change-state-to-emacs)))
1953 ;; Thie is a temp hook that uses free variables init-message and initial.
1954 ;; A dirty feature, but it is the simplest way to have it do the right thing.
1955 ;; The INIT-MESSAGE and INITIAL vars come from the scope set by
1956 ;; viper-read-string-with-history
1957 (defun viper-minibuffer-standard-hook ()
1958 (if (stringp init-message)
1959 (viper-tmp-insert-at-eob init-message))
1960 (if (stringp initial)
1962 ;; don't wait if we have unread events or in kbd macro
1963 (or unread-command-events
1966 (if (fboundp 'minibuffer-prompt-end)
1967 (delete-region (minibuffer-prompt-end) (point-max))
1971 (defsubst viper-minibuffer-real-start ()
1972 (if (fboundp 'minibuffer-prompt-end)
1973 (minibuffer-prompt-end)
1977 ;; Interpret last event in the local map first; if fails, use exit-minibuffer.
1978 ;; Run viper-minibuffer-exit-hook before exiting.
1979 (defun viper-exit-minibuffer ()
1980 "Exit minibuffer Viper way."
1983 (setq command (local-key-binding (char-to-string last-command-char)))
1984 (run-hooks 'viper-minibuffer-exit-hook)
1986 (command-execute command)
1987 (exit-minibuffer))))
1990 (defcustom viper-smart-suffix-list
1991 '("" "tex" "c" "cc" "C" "java" "el" "html" "htm" "xml"
1992 "pl" "flr" "P" "p" "h" "H")
1993 "*List of suffixes that Viper tries to append to filenames ending with a `.'.
1994 This is useful when you the current directory contains files with the same
1995 prefix and many different suffixes. Usually, only one of the suffixes
1996 represents an editable file. However, file completion will stop at the `.'
1997 The smart suffix feature lets you hit RET in such a case, and Viper will
1998 select the appropriate suffix.
2000 Suffixes are tried in the order given and the first suffix for which a
2001 corresponding file exists is selected. If no file exists for any of the
2002 suffixes, the user is asked to confirm.
2004 To turn this feature off, set this variable to nil."
2005 :type '(repeat string)
2009 ;; Try to add a suitable suffix to files whose name ends with a `.'
2010 ;; Useful when the user hits RET on a non-completed file name.
2011 ;; Used as a minibuffer exit hook in read-file-name
2012 (defun viper-file-add-suffix ()
2014 (len (length viper-smart-suffix-list))
2015 (file (buffer-substring-no-properties
2016 (viper-minibuffer-real-start) (point-max)))
2018 (goto-char (point-max))
2019 (if (and viper-smart-suffix-list (string-match "\\.$" file))
2021 (while (and (not found) (< count len))
2022 (setq suff (nth count viper-smart-suffix-list)
2025 (format "%s%s" (substitute-in-file-name file) suff))
2032 (viper-tmp-insert-at-eob " [Please complete file name]")
2034 (while (not (memq cmd
2035 '(exit-minibuffer viper-exit-minibuffer)))
2037 (key-binding (setq key (read-key-sequence nil))))
2038 (cond ((eq cmd 'self-insert-command)
2040 (insert (events-to-keys key))
2042 ((memq cmd '(exit-minibuffer viper-exit-minibuffer))
2044 (t (command-execute cmd)))
2049 (defun viper-minibuffer-trim-tail ()
2050 "Delete junk at the end of the first line of the minibuffer input.
2051 Remove this function from `viper-minibuffer-exit-hook', if this causes
2053 (if (viper-is-in-minibuffer)
2055 (goto-char (viper-minibuffer-real-start))
2057 (delete-region (point) (point-max)))))
2060 ;;; Reading string with history
2062 (defun viper-read-string-with-history (prompt &optional initial
2063 history-var default keymap
2065 ;; Read string, prompting with PROMPT and inserting the INITIAL
2066 ;; value. Uses HISTORY-VAR. DEFAULT is the default value to accept if the
2067 ;; input is an empty string.
2068 ;; Default value is displayed until the user types something in the
2070 ;; KEYMAP is used, if given, instead of minibuffer-local-map.
2071 ;; INIT-MESSAGE is the message temporarily displayed after entering the
2073 (let ((minibuffer-setup-hook
2074 ;; stolen from add-hook
2076 (if (boundp 'minibuffer-setup-hook)
2077 minibuffer-setup-hook
2080 'viper-minibuffer-standard-hook
2081 (if (or (not (listp old)) (eq (car old) 'lambda))
2087 (setq keymap (or keymap minibuffer-local-map)
2088 initial (or initial "")
2089 temp-msg (if default
2090 (format "(default: %s) " default)
2093 (setq viper-incomplete-ex-cmd nil)
2094 (setq val (read-from-minibuffer prompt
2095 (concat temp-msg initial val padding)
2096 keymap nil history-var))
2097 (setq minibuffer-setup-hook nil
2098 padding (viper-array-to-string (this-command-keys))
2100 ;; the following tries to be smart about what to put in history
2101 (if (not (string= val (car (eval history-var))))
2102 (set history-var (cons val (eval history-var))))
2103 (if (or (string= (nth 0 (eval history-var)) (nth 1 (eval history-var)))
2104 (string= (nth 0 (eval history-var)) ""))
2105 (set history-var (cdr (eval history-var))))
2106 ;; If the user enters nothing but the prev cmd wasn't viper-ex,
2107 ;; viper-command-argument, or `! shell-command', this probably means
2108 ;; that the user typed something then erased. Return "" in this case, not
2109 ;; the default---the default is too confusing in this case.
2110 (cond ((and (string= val "")
2111 (not (string= prompt "!")) ; was a `! shell-command'
2112 (not (memq last-command
2114 viper-command-argument
2118 ((string= val "") (or default ""))
2124 ;; insertion commands
2126 ;; Called when state changes from Insert Vi command mode.
2127 ;; Repeats the insertion command if Insert state was entered with prefix
2129 (defun viper-repeat-insert-command ()
2130 (let ((i-com (car viper-d-com))
2131 (val (nth 1 viper-d-com))
2132 (char (nth 2 viper-d-com)))
2133 (if (and val (> val 1)) ; first check that val is non-nil
2135 (setq viper-d-com (list i-com (1- val) ?r nil nil nil))
2137 (setq viper-d-com (list i-com val char nil nil nil))
2140 (defun viper-insert (arg)
2141 "Insert before point."
2143 (viper-set-complex-command-for-undo)
2144 (let ((val (viper-p-val arg))
2145 ;;(com (viper-getcom arg))
2147 (viper-set-destructive-command (list 'viper-insert val ?r nil nil nil))
2148 (if (eq viper-intermediate-command 'viper-repeat)
2149 (viper-loop val (viper-yank-last-insertion))
2150 (viper-change-state-to-insert))))
2152 (defun viper-append (arg)
2153 "Append after point."
2155 (viper-set-complex-command-for-undo)
2156 (let ((val (viper-p-val arg))
2157 ;;(com (viper-getcom arg))
2159 (viper-set-destructive-command (list 'viper-append val ?r nil nil nil))
2160 (if (not (eolp)) (forward-char))
2161 (if (eq viper-intermediate-command 'viper-repeat)
2162 (viper-loop val (viper-yank-last-insertion))
2163 (viper-change-state-to-insert))))
2165 (defun viper-Append (arg)
2166 "Append at end of line."
2168 (viper-set-complex-command-for-undo)
2169 (let ((val (viper-p-val arg))
2170 ;;(com (viper-getcom arg))
2172 (viper-set-destructive-command (list 'viper-Append val ?r nil nil nil))
2174 (if (eq viper-intermediate-command 'viper-repeat)
2175 (viper-loop val (viper-yank-last-insertion))
2176 (viper-change-state-to-insert))))
2178 (defun viper-Insert (arg)
2179 "Insert before first non-white."
2181 (viper-set-complex-command-for-undo)
2182 (let ((val (viper-p-val arg))
2183 ;;(com (viper-getcom arg))
2185 (viper-set-destructive-command (list 'viper-Insert val ?r nil nil nil))
2186 (back-to-indentation)
2187 (if (eq viper-intermediate-command 'viper-repeat)
2188 (viper-loop val (viper-yank-last-insertion))
2189 (viper-change-state-to-insert))))
2191 (defun viper-open-line (arg)
2194 (viper-set-complex-command-for-undo)
2195 (let ((val (viper-p-val arg))
2196 ;;(com (viper-getcom arg))
2198 (viper-set-destructive-command (list 'viper-open-line val ?r nil nil nil))
2199 (let ((col (current-indentation)))
2200 (if (eq viper-intermediate-command 'viper-repeat)
2204 (viper-indent-line col)
2205 (viper-yank-last-insertion))
2208 (viper-indent-line col)
2209 (viper-change-state-to-insert)))))
2211 (defun viper-Open-line (arg)
2214 (viper-set-complex-command-for-undo)
2215 (let ((val (viper-p-val arg))
2216 ;;(com (viper-getcom arg))
2218 (viper-set-destructive-command (list 'viper-Open-line val ?r nil nil nil))
2219 (let ((col (current-indentation)))
2220 (if (eq viper-intermediate-command 'viper-repeat)
2224 (viper-indent-line col)
2225 (viper-yank-last-insertion))
2228 (viper-indent-line col)
2229 (viper-change-state-to-insert)))))
2231 (defun viper-open-line-at-point (arg)
2232 "Open line at point."
2234 (viper-set-complex-command-for-undo)
2235 (let ((val (viper-p-val arg))
2236 ;;(com (viper-getcom arg))
2238 (viper-set-destructive-command
2239 (list 'viper-open-line-at-point val ?r nil nil nil))
2240 (if (eq viper-intermediate-command 'viper-repeat)
2243 (viper-yank-last-insertion))
2245 (viper-change-state-to-insert))))
2248 (defun viper-substitute (arg)
2249 "Substitute characters."
2251 (let ((val (viper-p-val arg))
2252 ;;(com (viper-getcom arg))
2256 (if (eq viper-intermediate-command 'viper-repeat)
2257 (viper-change-subr (mark t) (point))
2258 (viper-change (mark t) (point)))
2259 ;; com is set to ?r when we repeat this comand with dot
2260 (viper-set-destructive-command (list 'viper-substitute val ?r nil nil nil))
2263 ;; Command bound to S
2264 (defun viper-substitute-line (arg)
2267 (viper-set-complex-command-for-undo)
2268 (viper-line (cons arg ?C)))
2270 ;; Prepare for replace
2271 (defun viper-start-replace ()
2272 (setq viper-began-as-replace t
2273 viper-sitting-in-replace t
2274 viper-replace-chars-to-delete 0)
2276 'viper-after-change-functions 'viper-replace-mode-spy-after t 'local)
2278 'viper-before-change-functions 'viper-replace-mode-spy-before t 'local)
2279 ;; this will get added repeatedly, but no harm
2280 (add-hook 'after-change-functions 'viper-after-change-sentinel t)
2281 (add-hook 'before-change-functions 'viper-before-change-sentinel t)
2282 (viper-move-marker-locally
2283 'viper-last-posn-in-replace-region (viper-replace-start))
2285 'viper-post-command-hooks 'viper-replace-state-post-command-sentinel
2288 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel t 'local)
2289 ;; guard against a smartie who switched from R-replace to normal replace
2291 'viper-post-command-hooks 'viper-R-state-post-command-sentinel 'local)
2292 (if overwrite-mode (overwrite-mode -1))
2296 (defun viper-replace-mode-spy-before (beg end)
2297 (setq viper-replace-region-chars-deleted (viper-chars-in-region beg end))
2300 ;; Invoked as an after-change-function to calculate how many chars have to be
2301 ;; deleted. This function may be called several times within a single command,
2302 ;; if this command performs several separate buffer changes. Therefore, if
2303 ;; adds up the number of chars inserted and subtracts the number of chars
2305 (defun viper-replace-mode-spy-after (beg end length)
2306 (if (memq viper-intermediate-command
2307 '(dabbrev-expand hippie-expand repeating-insertion-from-ring))
2308 ;; Take special care of text insertion from insertion ring inside
2309 ;; replacement overlays.
2311 (setq viper-replace-chars-to-delete 0)
2312 (viper-move-marker-locally
2313 'viper-last-posn-in-replace-region (point)))
2315 (let* ((real-end (min end (viper-replace-end)))
2316 (column-shift (- (save-excursion (goto-char real-end)
2318 (save-excursion (goto-char beg)
2323 (setq chars-deleted viper-replace-region-chars-deleted))
2324 (setq viper-replace-region-chars-deleted 0)
2325 (setq viper-replace-chars-to-delete
2326 (+ viper-replace-chars-to-delete
2328 ;; if column shift is bigger, due to a TAB insertion, take
2329 ;; column-shift instead of the number of inserted chars
2330 (max (viper-chars-in-region beg real-end)
2331 ;; This test accounts for Chinese/Japanese/... chars,
2332 ;; which occupy 2 columns instead of one. If we use
2333 ;; column-shift here, we may delete two chars instead of
2334 ;; one when the user types one Chinese character.
2335 ;; Deleting two would be OK, if they were European chars,
2336 ;; but it is not OK if they are Chinese chars.
2337 ;; Since it is hard to
2338 ;; figure out which characters are being deleted in any
2339 ;; given region, we decided to treat Eastern and European
2340 ;; characters equally, even though Eastern chars may
2341 ;; occupy more columns.
2342 (if (memq this-command '(self-insert-command
2343 quoted-insert viper-insert-tab))
2346 ;; the number of deleted chars
2349 (viper-move-marker-locally
2350 'viper-last-posn-in-replace-region
2351 (max (if (> end (viper-replace-end)) (viper-replace-end) end)
2352 (or (marker-position viper-last-posn-in-replace-region)
2353 (viper-replace-start))
2359 ;; Delete stuff between viper-last-posn-in-replace-region and the end of
2360 ;; viper-replace-overlay-marker, if viper-last-posn-in-replace-region is within
2361 ;; the overlay and current point is before the end of the overlay.
2362 ;; Don't delete anything if current point is past the end of the overlay.
2363 (defun viper-finish-change ()
2365 'viper-after-change-functions 'viper-replace-mode-spy-after 'local)
2367 'viper-before-change-functions 'viper-replace-mode-spy-before 'local)
2369 'viper-post-command-hooks 'viper-replace-state-post-command-sentinel 'local)
2371 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel 'local)
2372 (viper-restore-cursor-color 'after-replace-mode)
2373 (setq viper-sitting-in-replace nil) ; just in case we'll need to know it
2375 (if (and viper-replace-overlay
2376 (viper-pos-within-region viper-last-posn-in-replace-region
2377 (viper-replace-start)
2378 (viper-replace-end))
2379 (< (point) (viper-replace-end)))
2381 viper-last-posn-in-replace-region (viper-replace-end))))
2383 (if (eq viper-current-state 'replace-state)
2384 (viper-downgrade-to-insert))
2385 ;; replace mode ended => nullify viper-last-posn-in-replace-region
2386 (viper-move-marker-locally 'viper-last-posn-in-replace-region nil)
2387 (viper-hide-replace-overlay)
2388 (viper-refresh-mode-line)
2389 (viper-put-string-on-kill-ring viper-last-replace-region)
2392 ;; Make STRING be the first element of the kill ring.
2393 (defun viper-put-string-on-kill-ring (string)
2394 (setq kill-ring (cons string kill-ring))
2395 (if (> (length kill-ring) kill-ring-max)
2396 (setcdr (nthcdr (1- kill-ring-max) kill-ring) nil))
2397 (setq kill-ring-yank-pointer kill-ring))
2399 (defun viper-finish-R-mode ()
2401 'viper-post-command-hooks 'viper-R-state-post-command-sentinel 'local)
2403 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel 'local)
2404 (viper-downgrade-to-insert))
2406 (defun viper-start-R-mode ()
2407 ;; Leave arg as 1, not t: XEmacs insists that it must be a pos number
2410 'viper-post-command-hooks 'viper-R-state-post-command-sentinel t 'local)
2412 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel t 'local)
2413 ;; guard against a smartie who switched from R-replace to normal replace
2415 'viper-post-command-hooks 'viper-replace-state-post-command-sentinel 'local)
2420 (defun viper-replace-state-exit-cmd ()
2421 "Binding for keys that cause Replace state to switch to Vi or to Insert.
2422 These keys are ESC, RET, and LineFeed"
2424 (if overwrite-mode ; if in replace mode invoked via 'R'
2425 (viper-finish-R-mode)
2426 (viper-finish-change))
2428 (if (eq this-command 'viper-intercept-ESC-key)
2429 (setq com 'viper-exit-insert-state)
2430 (viper-set-unread-command-events last-input-char)
2431 (setq com (key-binding (viper-read-key-sequence nil))))
2433 (condition-case conds
2434 (command-execute com)
2436 (viper-message-conditions conds)))
2438 (viper-hide-replace-overlay))
2441 (defun viper-replace-state-carriage-return ()
2442 "Carriage return in Viper replace state."
2444 ;; If Emacs start supporting overlay maps, as it currently supports
2445 ;; text-property maps, we could do away with viper-replace-minor-mode and
2446 ;; just have keymap attached to replace overlay. Then the "if part" of this
2447 ;; statement can be deleted.
2448 (if (or (< (point) (viper-replace-start))
2449 (> (point) (viper-replace-end)))
2450 (let (viper-replace-minor-mode com)
2451 (viper-set-unread-command-events last-input-char)
2452 (setq com (key-binding (read-key-sequence nil)))
2453 (condition-case conds
2454 (command-execute com)
2456 (viper-message-conditions conds))))
2457 (if (not viper-allow-multiline-replace-regions)
2458 (viper-replace-state-exit-cmd)
2459 (if (viper-same-line (point) (viper-replace-end))
2460 (viper-replace-state-exit-cmd)
2461 ;; delete the rest of line
2462 (delete-region (point) (viper-line-pos 'end))
2465 (if (eobp) (error "Last line in buffer")))
2466 ;; skip to the next line
2468 (back-to-indentation)
2472 ;; This is the function bound to 'R'---unlimited replace.
2473 ;; Similar to Emacs's own overwrite-mode.
2474 (defun viper-overwrite (arg)
2475 "Begin overwrite mode."
2477 (let ((val (viper-p-val arg))
2478 ;;(com (viper-getcom arg))
2480 (viper-set-destructive-command (list 'viper-overwrite val ?r nil nil nil))
2481 (if (eq viper-intermediate-command 'viper-repeat)
2483 ;; Viper saves inserted text in viper-last-insertion
2484 (setq len (length viper-last-insertion))
2485 (delete-char (min len (- (point-max) (point) 1)))
2486 (viper-loop val (viper-yank-last-insertion)))
2487 (setq last-command 'viper-overwrite)
2488 (viper-set-complex-command-for-undo)
2489 (viper-set-replace-overlay (point) (viper-line-pos 'end))
2490 (viper-change-state-to-replace)
2496 (defun viper-line (arg)
2497 (let ((val (car arg))
2499 (viper-move-marker-locally 'viper-com-point (point))
2501 (viper-next-line-carefully (1- val)))
2502 ;; the following ensures that dd, cc, D, yy will do the right thing on the
2503 ;; last line of buffer when this line has no \n.
2504 (viper-add-newline-at-eob-if-necessary)
2505 (viper-execute-com 'viper-line val com))
2506 (if (and (eobp) (not (bobp))) (forward-line -1))
2509 (defun viper-yank-line (arg)
2510 "Yank ARG lines (in Vi's sense)."
2512 (let ((val (viper-p-val arg)))
2513 (viper-line (cons val ?Y))))
2518 (defun viper-region (arg)
2519 "Execute command on a region."
2521 (let ((val (viper-P-val arg))
2522 (com (viper-getcom arg)))
2523 (viper-move-marker-locally 'viper-com-point (point))
2524 (exchange-point-and-mark)
2525 (viper-execute-com 'viper-region val com)))
2527 (defun viper-Region (arg)
2528 "Execute command on a Region."
2530 (let ((val (viper-P-val arg))
2531 (com (viper-getCom arg)))
2532 (viper-move-marker-locally 'viper-com-point (point))
2533 (exchange-point-and-mark)
2534 (viper-execute-com 'viper-Region val com)))
2536 (defun viper-replace-char (arg)
2537 "Replace the following ARG chars by the character read."
2539 (if (and (eolp) (bolp)) (error "No character to replace here"))
2540 (let ((val (viper-p-val arg))
2541 (com (viper-getcom arg)))
2542 (viper-replace-char-subr com val)
2543 (if (and (eolp) (not (bolp))) (forward-char 1))
2544 (setq viper-this-command-keys
2545 (format "%sr" (if (integerp arg) arg "")))
2546 (viper-set-destructive-command
2547 (list 'viper-replace-char val ?r nil viper-d-char nil))
2550 (defun viper-replace-char-subr (com arg)
2551 (let ((inhibit-quit t)
2553 (viper-set-complex-command-for-undo)
2554 (or (eq viper-intermediate-command 'viper-repeat)
2555 (viper-special-read-and-insert-char))
2558 (if (eq char ?\C-m) (setq char ?\n))
2562 (setq char (if com viper-d-char (viper-char-at-pos 'backward)))
2563 (if com (insert char))
2565 (setq viper-d-char char)
2567 (viper-loop (1- (if (> arg 0) arg (- arg)))
2576 ;; basic cursor movement. j, k, l, h commands.
2578 (defun viper-forward-char (arg)
2579 "Move point right ARG characters (left if ARG negative).
2580 On reaching end of line, stop and signal error."
2582 (viper-leave-region-active)
2583 (let ((val (viper-p-val arg))
2584 (com (viper-getcom arg)))
2585 (if com (viper-move-marker-locally 'viper-com-point (point)))
2586 (if viper-ex-style-motion
2588 ;; the boundary condition check gets weird here because
2589 ;; forward-char may be the parameter of a delete, and 'dl' works
2590 ;; just like 'x' for the last char on a line, so we have to allow
2591 ;; the forward motion before the 'viper-execute-com', but, of
2592 ;; course, 'dl' doesn't work on an empty line, so we have to
2593 ;; catch that condition before 'viper-execute-com'
2594 (if (and (eolp) (bolp)) (error "") (forward-char val))
2595 (if com (viper-execute-com 'viper-forward-char val com))
2596 (if (eolp) (progn (backward-char 1) (error ""))))
2598 (if com (viper-execute-com 'viper-forward-char val com)))))
2601 (defun viper-backward-char (arg)
2602 "Move point left ARG characters (right if ARG negative).
2603 On reaching beginning of line, stop and signal error."
2605 (viper-leave-region-active)
2606 (let ((val (viper-p-val arg))
2607 (com (viper-getcom arg)))
2608 (if com (viper-move-marker-locally 'viper-com-point (point)))
2609 (if viper-ex-style-motion
2611 (if (bolp) (error "") (backward-char val))
2612 (if com (viper-execute-com 'viper-backward-char val com)))
2614 (if com (viper-execute-com 'viper-backward-char val com)))))
2617 ;; Like forward-char, but doesn't move at end of buffer.
2618 ;; Returns distance traveled
2619 ;; (positive or 0, if arg positive; negative if arg negative).
2620 (defun viper-forward-char-carefully (&optional arg)
2621 (setq arg (or arg 1))
2626 (if (< (point) pt) ; arg was negative
2627 (- (viper-chars-in-region pt (point)))
2628 (viper-chars-in-region pt (point)))))
2631 ;; Like backward-char, but doesn't move at beg of buffer.
2632 ;; Returns distance traveled
2633 ;; (negative or 0, if arg positive; positive if arg negative).
2634 (defun viper-backward-char-carefully (&optional arg)
2635 (setq arg (or arg 1))
2640 (if (> (point) pt) ; arg was negative
2641 (viper-chars-in-region pt (point))
2642 (- (viper-chars-in-region pt (point))))))
2644 (defun viper-next-line-carefully (arg)
2653 ;; Words are formed from alpha's and nonalphas - <sp>,\t\n are separators for
2654 ;; word movement. When executed with a destructive command, \n is usually left
2655 ;; untouched for the last word. Viper uses syntax table to determine what is a
2656 ;; word and what is a separator. However, \n is always a separator. Also, if
2657 ;; viper-syntax-preference is 'vi, then `_' is part of the word.
2660 (defun viper-skip-separators (forward)
2663 (viper-skip-all-separators-forward 'within-line)
2664 (if (looking-at "\n")
2667 (viper-skip-all-separators-forward 'within-line))))
2668 ;; check for eob and white space before it. move off of eob
2669 (if (and (eobp) (save-excursion
2670 (viper-backward-char-carefully)
2671 (viper-looking-at-separator)))
2672 (viper-backward-char-carefully))
2673 (viper-skip-all-separators-backward 'within-line)
2674 (viper-backward-char-carefully)
2675 (if (looking-at "\n")
2676 (viper-skip-all-separators-backward 'within-line)
2677 (or (bobp) (forward-char)))))
2680 (defun viper-forward-word-kernel (val)
2682 (cond ((viper-looking-at-alpha)
2683 (viper-skip-alpha-forward "_")
2684 (viper-skip-separators t))
2685 ((viper-looking-at-separator)
2686 (viper-skip-separators t))
2687 ((not (viper-looking-at-alphasep))
2688 (viper-skip-nonalphasep-forward)
2689 (viper-skip-separators t)))
2690 (setq val (1- val))))
2692 ;; first skip non-newline separators backward, then skip \n. Then, if TWICE is
2693 ;; non-nil, skip non-\n back again, but don't overshoot the limit LIM.
2694 (defun viper-separator-skipback-special (twice lim)
2695 (let ((prev-char (viper-char-at-pos 'backward))
2696 (saved-point (point)))
2697 ;; skip non-newline separators backward
2698 (while (and (not (viper-memq-char prev-char '(nil \n)))
2700 ;; must be non-newline separator
2701 (if (eq viper-syntax-preference 'strict-vi)
2702 (viper-memq-char prev-char '(?\ ?\t))
2703 (viper-memq-char (char-syntax prev-char) '(?\ ?-))))
2704 (viper-backward-char-carefully)
2705 (setq prev-char (viper-char-at-pos 'backward)))
2707 (if (and (< lim (point)) (eq prev-char ?\n))
2709 ;; If we skipped to the next word and the prefix of this line doesn't
2710 ;; consist of separators preceded by a newline, then don't skip backwards
2712 (goto-char saved-point))
2713 (setq prev-char (viper-char-at-pos 'backward))
2715 ;; skip again, but make sure we don't overshoot the limit
2717 (while (and (not (viper-memq-char prev-char '(nil \n)))
2719 ;; must be non-newline separator
2720 (if (eq viper-syntax-preference 'strict-vi)
2721 (viper-memq-char prev-char '(?\ ?\t))
2722 (viper-memq-char (char-syntax prev-char) '(?\ ?-))))
2723 (viper-backward-char-carefully)
2724 (setq prev-char (viper-char-at-pos 'backward))))
2727 (viper-forward-char-carefully))
2731 (defun viper-forward-word (arg)
2734 (viper-leave-region-active)
2735 (let ((val (viper-p-val arg))
2736 (com (viper-getcom arg)))
2737 (if com (viper-move-marker-locally 'viper-com-point (point)))
2738 (viper-forward-word-kernel val)
2741 (cond ((viper-char-equal com ?c)
2742 (viper-separator-skipback-special 'twice viper-com-point))
2743 ;; Yank words including the whitespace, but not newline
2744 ((viper-char-equal com ?y)
2745 (viper-separator-skipback-special nil viper-com-point))
2746 ((viper-dotable-command-p com)
2747 (viper-separator-skipback-special nil viper-com-point)))
2748 (viper-execute-com 'viper-forward-word val com)))
2752 (defun viper-forward-Word (arg)
2753 "Forward word delimited by white characters."
2755 (viper-leave-region-active)
2756 (let ((val (viper-p-val arg))
2757 (com (viper-getcom arg)))
2758 (if com (viper-move-marker-locally 'viper-com-point (point)))
2760 (viper-skip-nonseparators 'forward)
2761 (viper-skip-separators t))
2763 (cond ((viper-char-equal com ?c)
2764 (viper-separator-skipback-special 'twice viper-com-point))
2765 ;; Yank words including the whitespace, but not newline
2766 ((viper-char-equal com ?y)
2767 (viper-separator-skipback-special nil viper-com-point))
2768 ((viper-dotable-command-p com)
2769 (viper-separator-skipback-special nil viper-com-point)))
2770 (viper-execute-com 'viper-forward-Word val com)))))
2773 ;; this is a bit different from Vi, but Vi's end of word
2774 ;; makes no sense whatsoever
2775 (defun viper-end-of-word-kernel ()
2776 (if (viper-end-of-word-p) (forward-char))
2777 (if (viper-looking-at-separator)
2778 (viper-skip-all-separators-forward))
2780 (cond ((viper-looking-at-alpha) (viper-skip-alpha-forward "_"))
2781 ((not (viper-looking-at-alphasep)) (viper-skip-nonalphasep-forward)))
2782 (viper-backward-char-carefully))
2784 (defun viper-end-of-word-p ()
2787 (cond ((viper-looking-at-alpha)
2789 (not (viper-looking-at-alpha)))
2790 ((not (viper-looking-at-alphasep))
2792 (viper-looking-at-alphasep))))))
2795 (defun viper-end-of-word (arg &optional careful)
2796 "Move point to end of current word."
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-loop val (viper-end-of-word-kernel))
2806 (viper-execute-com 'viper-end-of-word val com)))))
2808 (defun viper-end-of-Word (arg)
2809 "Forward to end of word delimited by white character."
2811 (viper-leave-region-active)
2812 (let ((val (viper-p-val arg))
2813 (com (viper-getcom arg)))
2814 (if com (viper-move-marker-locally 'viper-com-point (point)))
2816 (viper-end-of-word-kernel)
2817 (viper-skip-nonseparators 'forward)
2822 (viper-execute-com 'viper-end-of-Word val com)))))
2824 (defun viper-backward-word-kernel (val)
2826 (viper-backward-char-carefully)
2827 (cond ((viper-looking-at-alpha)
2828 (viper-skip-alpha-backward "_"))
2829 ((viper-looking-at-separator)
2831 (viper-skip-separators nil)
2832 (viper-backward-char-carefully)
2833 (cond ((viper-looking-at-alpha)
2834 (viper-skip-alpha-backward "_"))
2835 ((not (viper-looking-at-alphasep))
2836 (viper-skip-nonalphasep-backward))
2837 ((bobp)) ; could still be at separator, but at beg of buffer
2838 (t (forward-char))))
2839 ((not (viper-looking-at-alphasep))
2840 (viper-skip-nonalphasep-backward)))
2841 (setq val (1- val))))
2843 (defun viper-backward-word (arg)
2846 (viper-leave-region-active)
2847 (let ((val (viper-p-val arg))
2848 (com (viper-getcom arg)))
2851 (if (setq i (save-excursion (backward-char) (looking-at "\n")))
2853 (viper-move-marker-locally 'viper-com-point (point))
2854 (if i (forward-char))))
2855 (viper-backward-word-kernel val)
2856 (if com (viper-execute-com 'viper-backward-word val com))))
2858 (defun viper-backward-Word (arg)
2859 "Backward word delimited by white character."
2861 (viper-leave-region-active)
2862 (let ((val (viper-p-val arg))
2863 (com (viper-getcom arg)))
2866 (if (setq i (save-excursion (backward-char) (looking-at "\n")))
2868 (viper-move-marker-locally 'viper-com-point (point))
2869 (if i (forward-char))))
2871 (viper-skip-separators nil) ; nil means backward here
2872 (viper-skip-nonseparators 'backward))
2873 (if com (viper-execute-com 'viper-backward-Word val com))))
2879 (defun viper-beginning-of-line (arg)
2880 "Go to beginning of line."
2882 (viper-leave-region-active)
2883 (let ((val (viper-p-val arg))
2884 (com (viper-getcom arg)))
2885 (if com (viper-move-marker-locally 'viper-com-point (point)))
2886 (beginning-of-line val)
2887 (if com (viper-execute-com 'viper-beginning-of-line val com))))
2889 (defun viper-bol-and-skip-white (arg)
2890 "Beginning of line at first non-white character."
2892 (viper-leave-region-active)
2893 (let ((val (viper-p-val arg))
2894 (com (viper-getcom arg)))
2895 (if com (viper-move-marker-locally 'viper-com-point (point)))
2896 (forward-to-indentation (1- val))
2897 (if com (viper-execute-com 'viper-bol-and-skip-white val com))))
2899 (defun viper-goto-eol (arg)
2900 "Go to end of line."
2902 (viper-leave-region-active)
2903 (let ((val (viper-p-val arg))
2904 (com (viper-getcom arg)))
2905 (if com (viper-move-marker-locally 'viper-com-point (point)))
2907 (if com (viper-execute-com 'viper-goto-eol val com))
2908 (if viper-ex-style-motion
2909 (if (and (eolp) (not (bolp))
2910 ;; a fix for viper-change-to-eol
2911 (not (equal viper-current-state 'insert-state)))
2916 (defun viper-goto-col (arg)
2917 "Go to ARG's column."
2919 (viper-leave-region-active)
2920 (let ((val (viper-p-val arg))
2921 (com (viper-getcom arg))
2924 (viper-chars-in-region
2925 (viper-line-pos 'start) (viper-line-pos 'end)))
2926 (if com (viper-move-marker-locally 'viper-com-point (point)))
2928 (forward-char (1- (min line-len val)))
2929 (while (> (current-column) (1- val))
2931 (if com (viper-execute-com 'viper-goto-col val com))
2934 (if (> val (current-column)) (error "")))
2938 (defun viper-next-line (arg)
2941 (viper-leave-region-active)
2942 (let ((val (viper-p-val arg))
2943 (com (viper-getCom arg)))
2944 (if com (viper-move-marker-locally 'viper-com-point (point)))
2946 (if viper-ex-style-motion
2947 (if (and (eolp) (not (bolp))) (backward-char 1)))
2948 (setq this-command 'next-line)
2949 (if com (viper-execute-com 'viper-next-line val com))))
2951 (defun viper-next-line-at-bol (arg)
2952 "Next line at beginning of line."
2954 (viper-leave-region-active)
2957 (if (eobp) (error "Last line in buffer")))
2958 (let ((val (viper-p-val arg))
2959 (com (viper-getCom arg)))
2960 (if com (viper-move-marker-locally 'viper-com-point (point)))
2962 (back-to-indentation)
2963 (if com (viper-execute-com 'viper-next-line-at-bol val com))))
2966 (defun viper-previous-line (arg)
2967 "Go to previous line."
2969 (viper-leave-region-active)
2970 (let ((val (viper-p-val arg))
2971 (com (viper-getCom arg)))
2972 (if com (viper-move-marker-locally 'viper-com-point (point)))
2974 (if viper-ex-style-motion
2975 (if (and (eolp) (not (bolp))) (backward-char 1)))
2976 (setq this-command 'previous-line)
2977 (if com (viper-execute-com 'viper-previous-line val com))))
2980 (defun viper-previous-line-at-bol (arg)
2981 "Previous line at beginning of line."
2983 (viper-leave-region-active)
2986 (if (bobp) (error "First line in buffer")))
2987 (let ((val (viper-p-val arg))
2988 (com (viper-getCom arg)))
2989 (if com (viper-move-marker-locally 'viper-com-point (point)))
2990 (forward-line (- val))
2991 (back-to-indentation)
2992 (if com (viper-execute-com 'viper-previous-line val com))))
2994 (defun viper-change-to-eol (arg)
2995 "Change to end of line."
2997 (viper-goto-eol (cons arg ?c)))
2999 (defun viper-kill-line (arg)
3002 (viper-goto-eol (cons arg ?d)))
3004 (defun viper-erase-line (arg)
3007 (viper-beginning-of-line (cons arg ?d)))
3012 (defun viper-goto-line (arg)
3013 "Go to ARG's line. Without ARG go to end of buffer."
3015 (let ((val (viper-P-val arg))
3016 (com (viper-getCom arg)))
3017 (viper-move-marker-locally 'viper-com-point (point))
3018 (viper-deactivate-mark)
3021 (goto-char (point-max))
3022 (goto-char (point-min))
3023 (forward-line (1- val)))
3025 ;; positioning is done twice: before and after command execution
3026 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3027 (back-to-indentation)
3029 (if com (viper-execute-com 'viper-goto-line val com))
3031 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3032 (back-to-indentation)
3035 ;; Find ARG's occurrence of CHAR on the current line.
3036 ;; If FORWARD then search is forward, otherwise backward. OFFSET is used to
3037 ;; adjust point after search.
3038 (defun viper-find-char (arg char forward offset)
3039 (or (char-or-string-p char) (error ""))
3040 (let ((arg (if forward arg (- arg)))
3041 (cmd (if (eq viper-intermediate-command 'viper-repeat)
3043 (viper-array-to-string (this-command-keys))))
3044 point region-beg region-end)
3047 (if (> arg 0) ; forward
3049 (setq region-beg (point))
3050 (if viper-allow-multiline-replace-regions
3051 (viper-forward-paragraph 1)
3053 (setq region-end (point)))
3054 (setq region-end (point))
3055 (if viper-allow-multiline-replace-regions
3056 (viper-backward-paragraph 1)
3057 (beginning-of-line))
3058 (setq region-beg (point)))
3059 (if (or (and (< arg 0)
3060 (< (- region-end region-beg)
3061 (if viper-allow-multiline-replace-regions
3065 (< (- region-end region-beg)
3066 (if viper-allow-multiline-replace-regions
3069 (error "Command `%s': At %s of %s"
3071 (if (> arg 0) "end" "beginning")
3072 (if viper-allow-multiline-replace-regions
3073 "paragraph" "line")))
3074 (narrow-to-region region-beg region-end)
3075 ;; if arg > 0, point is forwarded before search.
3076 (if (> arg 0) (goto-char (1+ (point-min)))
3077 (goto-char (point-max)))
3078 (if (let ((case-fold-search nil))
3079 (search-forward (char-to-string char) nil 0 arg))
3080 (setq point (point))
3081 (error "Command `%s': `%c' not found" cmd char))))
3084 (backward-char (if offset 2 1))
3085 (forward-char (if offset 1 0)))))
3087 (defun viper-find-char-forward (arg)
3088 "Find char on the line.
3089 If called interactively read the char to find from the terminal, and if
3090 called from viper-repeat, the char last used is used. This behaviour is
3091 controlled by the sign of prefix numeric value."
3093 (let ((val (viper-p-val arg))
3094 (com (viper-getcom arg))
3095 (cmd-representation (nth 5 viper-d-com)))
3097 ;; this means that the function was called interactively
3098 (setq viper-f-char (read-char)
3101 ;; viper-repeat --- set viper-F-char from command-keys
3102 (setq viper-F-char (if (stringp cmd-representation)
3103 (viper-seq-last-elt cmd-representation)
3105 viper-f-char viper-F-char)
3107 (if com (viper-move-marker-locally 'viper-com-point (point)))
3109 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) t nil)
3113 (setq viper-F-char viper-f-char) ; set new viper-F-char
3115 (viper-execute-com 'viper-find-char-forward val com)))))
3117 (defun viper-goto-char-forward (arg)
3118 "Go up to char ARG forward on line."
3120 (let ((val (viper-p-val arg))
3121 (com (viper-getcom arg))
3122 (cmd-representation (nth 5 viper-d-com)))
3124 ;; this means that the function was called interactively
3125 (setq viper-f-char (read-char)
3128 ;; viper-repeat --- set viper-F-char from command-keys
3129 (setq viper-F-char (if (stringp cmd-representation)
3130 (viper-seq-last-elt cmd-representation)
3132 viper-f-char viper-F-char)
3134 (if com (viper-move-marker-locally 'viper-com-point (point)))
3136 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) t t)
3140 (setq viper-F-char viper-f-char) ; set new viper-F-char
3142 (viper-execute-com 'viper-goto-char-forward val com)))))
3144 (defun viper-find-char-backward (arg)
3145 "Find char ARG on line backward."
3147 (let ((val (viper-p-val arg))
3148 (com (viper-getcom arg))
3149 (cmd-representation (nth 5 viper-d-com)))
3151 ;; this means that the function was called interactively
3152 (setq viper-f-char (read-char)
3155 ;; viper-repeat --- set viper-F-char from command-keys
3156 (setq viper-F-char (if (stringp cmd-representation)
3157 (viper-seq-last-elt cmd-representation)
3159 viper-f-char viper-F-char)
3161 (if com (viper-move-marker-locally 'viper-com-point (point)))
3163 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) nil nil)
3167 (setq viper-F-char viper-f-char) ; set new viper-F-char
3168 (viper-execute-com 'viper-find-char-backward val com)))))
3170 (defun viper-goto-char-backward (arg)
3171 "Go up to char ARG backward on line."
3173 (let ((val (viper-p-val arg))
3174 (com (viper-getcom arg))
3175 (cmd-representation (nth 5 viper-d-com)))
3177 ;; this means that the function was called interactively
3178 (setq viper-f-char (read-char)
3181 ;; viper-repeat --- set viper-F-char from command-keys
3182 (setq viper-F-char (if (stringp cmd-representation)
3183 (viper-seq-last-elt cmd-representation)
3185 viper-f-char viper-F-char)
3187 (if com (viper-move-marker-locally 'viper-com-point (point)))
3189 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) nil t)
3193 (setq viper-F-char viper-f-char) ; set new viper-F-char
3194 (viper-execute-com 'viper-goto-char-backward val com)))))
3196 (defun viper-repeat-find (arg)
3197 "Repeat previous find command."
3199 (let ((val (viper-p-val arg))
3200 (com (viper-getcom arg)))
3201 (viper-deactivate-mark)
3202 (if com (viper-move-marker-locally 'viper-com-point (point)))
3203 (viper-find-char val viper-f-char viper-f-forward viper-f-offset)
3206 (if viper-f-forward (forward-char))
3207 (viper-execute-com 'viper-repeat-find val com)))))
3209 (defun viper-repeat-find-opposite (arg)
3210 "Repeat previous find command in the opposite direction."
3212 (let ((val (viper-p-val arg))
3213 (com (viper-getcom arg)))
3214 (viper-deactivate-mark)
3215 (if com (viper-move-marker-locally 'viper-com-point (point)))
3216 (viper-find-char val viper-f-char (not viper-f-forward) viper-f-offset)
3219 (if viper-f-forward (forward-char))
3220 (viper-execute-com 'viper-repeat-find-opposite val com)))))
3223 ;; window scrolling etc.
3225 (defun viper-window-top (arg)
3226 "Go to home window line."
3228 (let ((val (viper-p-val arg))
3229 (com (viper-getCom arg)))
3230 (viper-leave-region-active)
3231 (if com (viper-move-marker-locally 'viper-com-point (point)))
3233 (move-to-window-line (1- val))
3235 ;; positioning is done twice: before and after command execution
3236 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3237 (back-to-indentation)
3239 (if com (viper-execute-com 'viper-window-top val com))
3241 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3242 (back-to-indentation)
3245 (defun viper-window-middle (arg)
3246 "Go to middle window line."
3248 (let ((val (viper-p-val arg))
3249 (com (viper-getCom arg)))
3250 (viper-leave-region-active)
3251 (if com (viper-move-marker-locally 'viper-com-point (point)))
3253 (move-to-window-line (+ (/ (1- (window-height)) 2) (1- val)))
3255 ;; positioning is done twice: before and after command execution
3256 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3257 (back-to-indentation)
3259 (if com (viper-execute-com 'viper-window-middle val com))
3261 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3262 (back-to-indentation)
3265 (defun viper-window-bottom (arg)
3266 "Go to last window line."
3268 (let ((val (viper-p-val arg))
3269 (com (viper-getCom arg)))
3270 (viper-leave-region-active)
3271 (if com (viper-move-marker-locally 'viper-com-point (point)))
3273 (move-to-window-line (- val))
3275 ;; positioning is done twice: before and after command execution
3276 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3277 (back-to-indentation)
3279 (if com (viper-execute-com 'viper-window-bottom val com))
3281 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3282 (back-to-indentation)
3285 (defun viper-line-to-top (arg)
3286 "Put current line on the home line."
3288 (recenter (1- arg)))
3290 (defun viper-line-to-middle (arg)
3291 "Put current line on the middle line."
3293 (recenter (+ (1- arg) (/ (1- (window-height)) 2))))
3295 (defun viper-line-to-bottom (arg)
3296 "Put current line on the last line."
3298 (recenter (- (window-height) (1+ arg))))
3300 ;; If point is within viper-search-scroll-threshold of window top or bottom,
3301 ;; scroll up or down 1/7 of window height, depending on whether we are at the
3302 ;; bottom or at the top of the window. This function is called by viper-search
3303 ;; (which is called from viper-search-forward/backward/next). If the value of
3304 ;; viper-search-scroll-threshold is negative - don't scroll.
3305 (defun viper-adjust-window ()
3306 (let ((win-height (if viper-emacs-p
3307 (1- (window-height)) ; adjust for modeline
3308 (window-displayed-height)))
3310 at-top-p at-bottom-p
3311 min-scroll direction)
3313 (move-to-window-line 0) ; top
3315 (<= (count-lines pt (point))
3316 viper-search-scroll-threshold))
3317 (move-to-window-line -1) ; bottom
3319 (<= (count-lines pt (point)) viper-search-scroll-threshold))
3321 (cond (at-top-p (setq min-scroll (1- viper-search-scroll-threshold)
3323 (at-bottom-p (setq min-scroll (1+ viper-search-scroll-threshold)
3327 (* (max min-scroll (/ win-height 7)) direction)))
3332 ;; must correct this to only match ( to ) etc. On the other hand
3333 ;; it is good that paren match gets confused, because that way you
3334 ;; catch _all_ imbalances.
3336 (defun viper-paren-match (arg)
3337 "Go to the matching parenthesis."
3339 (viper-leave-region-active)
3340 (let ((com (viper-getcom arg))
3341 (parse-sexp-ignore-comments viper-parse-sexp-ignore-comments)
3344 (if (or (> arg 99) (< arg 1))
3345 (error "Prefix must be between 1 and 99")
3347 (if (> (point-max) 80000)
3348 (* (/ (point-max) 100) arg)
3349 (/ (* (point-max) arg) 100)))
3350 (back-to-indentation))
3351 (let (beg-lim end-lim)
3352 (if (and (eolp) (not (bolp))) (forward-char -1))
3353 (if (not (looking-at "[][(){}]"))
3354 (setq anchor-point (point)))
3357 (setq beg-lim (point))
3359 (setq end-lim (point)))
3360 (cond ((re-search-forward "[][(){}]" end-lim t)
3362 ((re-search-backward "[][(){}]" beg-lim t))
3364 (error "No matching character on line"))))
3365 (cond ((looking-at "[\(\[{]")
3366 (if com (viper-move-marker-locally 'viper-com-point (point)))
3369 (viper-execute-com 'viper-paren-match nil com)
3374 (viper-move-marker-locally 'viper-com-point anchor-point)
3376 (viper-execute-com 'viper-paren-match nil com)
3378 ((looking-at "[])}]")
3380 (if com (viper-move-marker-locally 'viper-com-point (point)))
3382 (if com (viper-execute-com 'viper-paren-match nil com)))
3385 (defun viper-toggle-parse-sexp-ignore-comments ()
3387 (setq viper-parse-sexp-ignore-comments
3388 (not viper-parse-sexp-ignore-comments))
3390 "From now on, `%%' will %signore parentheses inside comment fields"
3391 (if viper-parse-sexp-ignore-comments "" "NOT "))))
3394 ;; sentence, paragraph and heading
3396 (defun viper-forward-sentence (arg)
3399 (or (eq last-command this-command)
3401 (let ((val (viper-p-val arg))
3402 (com (viper-getcom arg)))
3403 (if com (viper-move-marker-locally 'viper-com-point (point)))
3404 (forward-sentence val)
3405 (if com (viper-execute-com 'viper-forward-sentence nil com))))
3407 (defun viper-backward-sentence (arg)
3408 "Backward sentence."
3410 (or (eq last-command this-command)
3412 (let ((val (viper-p-val arg))
3413 (com (viper-getcom arg)))
3414 (if com (viper-move-marker-locally 'viper-com-point (point)))
3415 (backward-sentence val)
3416 (if com (viper-execute-com 'viper-backward-sentence nil com))))
3418 (defun viper-forward-paragraph (arg)
3419 "Forward paragraph."
3421 (or (eq last-command this-command)
3423 (let ((val (viper-p-val arg))
3424 ;; if you want d} operate on whole lines, change viper-getcom to
3425 ;; viper-getCom below
3426 (com (viper-getcom arg)))
3427 (if com (viper-move-marker-locally 'viper-com-point (point)))
3428 (forward-paragraph val)
3432 (viper-execute-com 'viper-forward-paragraph nil com)))))
3434 (defun viper-backward-paragraph (arg)
3435 "Backward paragraph."
3437 (or (eq last-command this-command)
3439 (let ((val (viper-p-val arg))
3440 ;; if you want d{ operate on whole lines, change viper-getcom to
3441 ;; viper-getCom below
3442 (com (viper-getcom arg)))
3443 (if com (viper-move-marker-locally 'viper-com-point (point)))
3444 (backward-paragraph val)
3448 (viper-execute-com 'viper-backward-paragraph nil com)
3449 (backward-char 1)))))
3451 ;; should be mode-specific
3452 (defun viper-prev-heading (arg)
3454 (let ((val (viper-p-val arg))
3455 (com (viper-getCom arg)))
3456 (if com (viper-move-marker-locally 'viper-com-point (point)))
3457 (re-search-backward viper-heading-start nil t val)
3458 (goto-char (match-beginning 0))
3459 (if com (viper-execute-com 'viper-prev-heading nil com))))
3461 (defun viper-heading-end (arg)
3463 (let ((val (viper-p-val arg))
3464 (com (viper-getCom arg)))
3465 (if com (viper-move-marker-locally 'viper-com-point (point)))
3466 (re-search-forward viper-heading-end nil t val)
3467 (goto-char (match-beginning 0))
3468 (if com (viper-execute-com 'viper-heading-end nil com))))
3470 (defun viper-next-heading (arg)
3472 (let ((val (viper-p-val arg))
3473 (com (viper-getCom arg)))
3474 (if com (viper-move-marker-locally 'viper-com-point (point)))
3476 (re-search-forward viper-heading-start nil t val)
3477 (goto-char (match-beginning 0))
3478 (if com (viper-execute-com 'viper-next-heading nil com))))
3483 (defun viper-scroll-screen (arg)
3484 "Scroll to next screen."
3490 (setq arg (1- arg)))
3493 (setq arg (1+ arg))))
3497 (message "End of buffer")
3498 (goto-char (point-max)))
3499 (message "Beginning of buffer")
3500 (goto-char (point-min))))
3503 (defun viper-scroll-screen-back (arg)
3504 "Scroll to previous screen."
3506 (viper-scroll-screen (- arg)))
3508 (defun viper-scroll-down (arg)
3509 "Pull down half screen."
3513 (scroll-down (/ (window-height) 2))
3516 (message "Beginning of buffer")
3517 (goto-char (point-min)))))
3519 (defun viper-scroll-down-one (arg)
3520 "Scroll up one line."
3524 (defun viper-scroll-up (arg)
3525 "Pull up half screen."
3529 (scroll-up (/ (window-height) 2))
3532 (message "End of buffer")
3533 (goto-char (point-max)))))
3535 (defun viper-scroll-up-one (arg)
3536 "Scroll down one line."
3543 (defun viper-if-string (prompt)
3544 (if (memq viper-intermediate-command
3545 '(viper-command-argument viper-digit-argument viper-repeat))
3546 (setq viper-this-command-keys (this-command-keys)))
3547 (let ((s (viper-read-string-with-history
3550 'viper-search-history
3551 (car viper-search-history))))
3552 (if (not (string= s ""))
3553 (setq viper-s-string s))))
3556 (defun viper-toggle-search-style (arg)
3557 "Toggle the value of viper-case-fold-search/viper-re-search.
3558 Without prefix argument, will ask which search style to toggle. With prefix
3559 arg 1,toggles viper-case-fold-search; with arg 2 toggles viper-re-search.
3561 Although this function is bound to \\[viper-toggle-search-style], the most
3562 convenient way to use it is to bind `//' to the macro
3563 `1 M-x viper-toggle-search-style' and `///' to
3564 `2 M-x viper-toggle-search-style'. In this way, hitting `//' quickly will
3565 toggle case-fold-search and hitting `/' three times witth toggle regexp
3566 search. Macros are more convenient in this case because they don't affect
3567 the Emacs binding of `/'."
3570 (cond ((or (eq arg 1)
3572 (y-or-n-p (format "Search style: '%s'. Want '%s'? "
3573 (if viper-case-fold-search
3574 "case-insensitive" "case-sensitive")
3575 (if viper-case-fold-search
3577 "case-insensitive")))))
3578 (setq viper-case-fold-search (null viper-case-fold-search))
3579 (if viper-case-fold-search
3580 (setq msg "Search becomes case-insensitive")
3581 (setq msg "Search becomes case-sensitive")))
3584 (y-or-n-p (format "Search style: '%s'. Want '%s'? "
3586 "regexp-search" "vanilla-search")
3589 "regexp-search")))))
3590 (setq viper-re-search (null viper-re-search))
3592 (setq msg "Search becomes regexp-style")
3593 (setq msg "Search becomes vanilla-style")))
3595 (setq msg "Search style remains unchanged")))
3598 (defun viper-set-searchstyle-toggling-macros (unset)
3599 "Set the macros for toggling the search style in Viper's vi-state.
3600 The macro that toggles case sensitivity is bound to `//', and the one that
3601 toggles regexp search is bound to `///'.
3602 With a prefix argument, this function unsets the macros. "
3607 ;; toggle case sensitivity in search
3608 (viper-record-kbd-macro
3610 [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]
3612 ;; toggle regexp/vanila search
3613 (viper-record-kbd-macro
3615 [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]
3619 "// and /// now toggle case-sensitivity and regexp search")))
3620 (viper-unrecord-kbd-macro "//" 'vi-state)
3622 (viper-unrecord-kbd-macro "///" 'vi-state))))
3625 (defun viper-set-parsing-style-toggling-macro (unset)
3626 "Set `%%%' to be a macro that toggles whether comment fields should be parsed for matching parentheses.
3627 This is used in conjunction with the `%' command.
3629 With a prefix argument, unsets the macro."
3634 ;; Make %%% toggle parsing comments for matching parentheses
3635 (viper-record-kbd-macro
3637 [(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]
3641 "%%%%%% now toggles whether comments should be parsed for matching parentheses")))
3642 (viper-unrecord-kbd-macro "%%%" 'vi-state))))
3645 (defun viper-set-emacs-state-searchstyle-macros (unset &optional arg-majormode)
3646 "Set the macros for toggling the search style in Viper's emacs-state.
3647 The macro that toggles case sensitivity is bound to `//', and the one that
3648 toggles regexp search is bound to `///'.
3649 With a prefix argument, this function unsets the macros.
3650 If the optional prefix argument is non-nil and specifies a valid major mode,
3651 this sets the macros only in the macros in that major mode. Otherwise,
3652 the macros are set in the current major mode.
3653 \(When unsetting the macros, the second argument has no effect.\)"
3658 ;; toggle case sensitivity in search
3659 (viper-record-kbd-macro
3661 [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]
3662 (or arg-majormode major-mode))
3663 ;; toggle regexp/vanila search
3664 (viper-record-kbd-macro
3666 [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]
3667 (or arg-majormode major-mode))
3670 "// and /// now toggle case-sensitivity and regexp search.")))
3671 (viper-unrecord-kbd-macro "//" 'emacs-state)
3673 (viper-unrecord-kbd-macro "///" 'emacs-state))))
3676 (defun viper-search-forward (arg)
3677 "Search a string forward.
3678 ARG is used to find the ARG's occurrence of the string.
3679 Null string will repeat previous search."
3681 (let ((val (viper-P-val arg))
3682 (com (viper-getcom arg))
3683 (old-str viper-s-string))
3684 (setq viper-s-forward t)
3685 (viper-if-string "/")
3686 ;; this is not used at present, but may be used later
3687 (if (or (not (equal old-str viper-s-string))
3688 (not (markerp viper-local-search-start-marker))
3689 (not (marker-buffer viper-local-search-start-marker)))
3690 (setq viper-local-search-start-marker (point-marker)))
3691 (viper-search viper-s-string t val)
3694 (viper-move-marker-locally 'viper-com-point (mark t))
3695 (viper-execute-com 'viper-search-next val com)))))
3697 (defun viper-search-backward (arg)
3698 "Search a string backward.
3699 ARG is used to find the ARG's occurrence of the string.
3700 Null string will repeat previous search."
3702 (let ((val (viper-P-val arg))
3703 (com (viper-getcom arg))
3704 (old-str viper-s-string))
3705 (setq viper-s-forward nil)
3706 (viper-if-string "?")
3707 ;; this is not used at present, but may be used later
3708 (if (or (not (equal old-str viper-s-string))
3709 (not (markerp viper-local-search-start-marker))
3710 (not (marker-buffer viper-local-search-start-marker)))
3711 (setq viper-local-search-start-marker (point-marker)))
3712 (viper-search viper-s-string nil val)
3715 (viper-move-marker-locally 'viper-com-point (mark t))
3716 (viper-execute-com 'viper-search-next val com)))))
3719 ;; Search for COUNT's occurrence of STRING.
3720 ;; Search is forward if FORWARD is non-nil, otherwise backward.
3721 ;; INIT-POINT is the position where search is to start.
3723 ;; (STRING FORW COUNT &optional NO-OFFSET INIT-POINT LIMIT FAIL-IF-NOT-FOUND)
3724 (defun viper-search (string forward arg
3725 &optional no-offset init-point fail-if-not-found)
3726 (if (not (equal string ""))
3727 (let ((val (viper-p-val arg))
3728 (com (viper-getcom arg))
3729 (offset (not no-offset))
3730 (case-fold-search viper-case-fold-search)
3731 (start-point (or init-point (point))))
3732 (viper-deactivate-mark)
3736 (if offset (viper-forward-char-carefully))
3739 (re-search-forward string nil nil val)
3740 (re-search-backward string))
3741 (search-forward string nil nil val)
3742 (search-backward string))
3743 (if (not (equal start-point (point)))
3744 (push-mark start-point t)))
3746 (if (and (not fail-if-not-found) viper-search-wrap-around-t)
3748 (message "Search wrapped around BOTTOM of buffer")
3749 (goto-char (point-min))
3750 (viper-search string forward (cons 1 com) t start-point 'fail)
3751 ;; don't wait in macros
3752 (or executing-kbd-macro
3753 (memq viper-intermediate-command
3755 viper-digit-argument
3756 viper-command-argument))
3758 ;; delete the wrap-around message
3761 (goto-char start-point)
3762 (error "`%s': %s not found"
3764 (if viper-re-search "Pattern" "String"))
3770 (re-search-backward string nil nil val)
3771 (search-backward string nil nil val))
3772 (if (not (equal start-point (point)))
3773 (push-mark start-point t)))
3775 (if (and (not fail-if-not-found) viper-search-wrap-around-t)
3777 (message "Search wrapped around TOP of buffer")
3778 (goto-char (point-max))
3779 (viper-search string forward (cons 1 com) t start-point 'fail)
3780 ;; don't wait in macros
3781 (or executing-kbd-macro
3782 (memq viper-intermediate-command
3784 viper-digit-argument
3785 viper-command-argument))
3787 ;; delete the wrap-around message
3790 (goto-char start-point)
3791 (error "`%s': %s not found"
3793 (if viper-re-search "Pattern" "String"))
3795 ;; pull up or down if at top/bottom of window
3796 (viper-adjust-window)
3797 ;; highlight the result of search
3798 ;; don't wait and don't highlight in macros
3799 (or executing-kbd-macro
3800 (memq viper-intermediate-command
3801 '(viper-repeat viper-digit-argument viper-command-argument))
3802 (viper-flash-search-pattern))
3805 (defun viper-search-next (arg)
3806 "Repeat previous search."
3808 (let ((val (viper-p-val arg))
3809 (com (viper-getcom arg)))
3810 (if (null viper-s-string) (error viper-NoPrevSearch))
3811 (viper-search viper-s-string viper-s-forward arg)
3814 (viper-move-marker-locally 'viper-com-point (mark t))
3815 (viper-execute-com 'viper-search-next val com)))))
3817 (defun viper-search-Next (arg)
3818 "Repeat previous search in the reverse direction."
3820 (let ((val (viper-p-val arg))
3821 (com (viper-getcom arg)))
3822 (if (null viper-s-string) (error viper-NoPrevSearch))
3823 (viper-search viper-s-string (not viper-s-forward) arg)
3826 (viper-move-marker-locally 'viper-com-point (mark t))
3827 (viper-execute-com 'viper-search-Next val com)))))
3830 ;; Search contents of buffer defined by one of Viper's motion commands.
3831 ;; Repeatable via `n' and `N'.
3832 (defun viper-buffer-search-enable (&optional c)
3833 (cond (c (setq viper-buffer-search-char c))
3834 ((null viper-buffer-search-char)
3835 (setq viper-buffer-search-char ?g)))
3836 (define-key viper-vi-basic-map
3837 (cond ((viper-characterp viper-buffer-search-char)
3838 (char-to-string viper-buffer-search-char))
3839 (t (error "viper-buffer-search-char: wrong value type, %s"
3840 viper-buffer-search-char)))
3841 'viper-command-argument)
3842 (aset viper-exec-array viper-buffer-search-char 'viper-exec-buffer-search)
3843 (setq viper-prefix-commands
3844 (cons viper-buffer-search-char viper-prefix-commands)))
3846 ;; This is a Viper wraper for isearch-forward.
3847 (defun viper-isearch-forward (arg)
3848 "Do incremental search forward."
3850 ;; emacs bug workaround
3851 (if (listp arg) (setq arg (car arg)))
3852 (viper-exec-form-in-emacs (list 'isearch-forward arg)))
3854 ;; This is a Viper wraper for isearch-backward."
3855 (defun viper-isearch-backward (arg)
3856 "Do incremental search backward."
3858 ;; emacs bug workaround
3859 (if (listp arg) (setq arg (car arg)))
3860 (viper-exec-form-in-emacs (list 'isearch-backward arg)))
3863 ;; visiting and killing files, buffers
3865 (defun viper-switch-to-buffer ()
3866 "Switch to buffer in the current window."
3868 (let ((other-buffer (other-buffer (current-buffer)))
3871 (funcall viper-read-buffer-function
3872 "Switch to buffer in this window: " other-buffer))
3873 (switch-to-buffer buffer)))
3875 (defun viper-switch-to-buffer-other-window ()
3876 "Switch to buffer in another window."
3878 (let ((other-buffer (other-buffer (current-buffer)))
3881 (funcall viper-read-buffer-function
3882 "Switch to buffer in another window: " other-buffer))
3883 (switch-to-buffer-other-window buffer)))
3885 (defun viper-kill-buffer ()
3888 (let (buffer buffer-name)
3890 (funcall viper-read-buffer-function
3891 (format "Kill buffer \(%s\): "
3892 (buffer-name (current-buffer)))))
3894 (if (null buffer-name)
3896 (get-buffer buffer-name)))
3897 (if (null buffer) (error "`%s': No such buffer" buffer-name))
3898 (if (or (not (buffer-modified-p buffer))
3901 "Buffer `%s' is modified, are you sure you want to kill it? "
3903 (kill-buffer buffer)
3904 (error "Buffer not killed"))))
3910 (defsubst viper-yank (text)
3911 "Yank TEXT silently. This works correctly with Emacs's yank-pop command."
3913 (setq this-command 'yank))
3915 (defun viper-put-back (arg)
3916 "Put back after point/below line."
3918 (let ((val (viper-p-val arg))
3919 (text (if viper-use-register
3920 (cond ((viper-valid-register viper-use-register '(digit))
3922 (- viper-use-register ?1) 'do-not-rotate))
3923 ((viper-valid-register viper-use-register)
3924 (get-register (downcase viper-use-register)))
3925 (t (error viper-InvalidRegister viper-use-register)))
3927 sv-point chars-inserted lines-inserted)
3929 (if viper-use-register
3930 (let ((reg viper-use-register))
3931 (setq viper-use-register nil)
3932 (error viper-EmptyRegister reg))
3934 (setq viper-use-register nil)
3935 (if (viper-end-with-a-newline-p text)
3941 (beginning-of-line))
3942 (if (not (eolp)) (viper-forward-char-carefully)))
3943 (set-marker (viper-mark-marker) (point) (current-buffer))
3944 (viper-set-destructive-command
3945 (list 'viper-put-back val nil viper-use-register nil nil))
3946 (setq sv-point (point))
3947 (viper-loop val (viper-yank text))
3948 (setq chars-inserted (abs (- (point) sv-point))
3949 lines-inserted (abs (count-lines (point) sv-point)))
3950 (if (or (> chars-inserted viper-change-notification-threshold)
3951 (> lines-inserted viper-change-notification-threshold))
3952 (message "Inserted %d character(s), %d line(s)"
3953 chars-inserted lines-inserted)))
3954 ;; Vi puts cursor on the last char when the yanked text doesn't contain a
3955 ;; newline; it leaves the cursor at the beginning when the text contains
3957 (if (viper-same-line (point) (mark))
3958 (or (= (point) (mark)) (viper-backward-char-carefully))
3959 (exchange-point-and-mark)
3961 (back-to-indentation)))
3962 (viper-deactivate-mark))
3964 (defun viper-Put-back (arg)
3965 "Put back at point/above line."
3967 (let ((val (viper-p-val arg))
3968 (text (if viper-use-register
3969 (cond ((viper-valid-register viper-use-register '(digit))
3971 (- viper-use-register ?1) 'do-not-rotate))
3972 ((viper-valid-register viper-use-register)
3973 (get-register (downcase viper-use-register)))
3974 (t (error viper-InvalidRegister viper-use-register)))
3976 sv-point chars-inserted lines-inserted)
3978 (if viper-use-register
3979 (let ((reg viper-use-register))
3980 (setq viper-use-register nil)
3981 (error viper-EmptyRegister reg))
3983 (setq viper-use-register nil)
3984 (if (viper-end-with-a-newline-p text) (beginning-of-line))
3985 (viper-set-destructive-command
3986 (list 'viper-Put-back val nil viper-use-register nil nil))
3987 (set-marker (viper-mark-marker) (point) (current-buffer))
3988 (setq sv-point (point))
3989 (viper-loop val (viper-yank text))
3990 (setq chars-inserted (abs (- (point) sv-point))
3991 lines-inserted (abs (count-lines (point) sv-point)))
3992 (if (or (> chars-inserted viper-change-notification-threshold)
3993 (> lines-inserted viper-change-notification-threshold))
3994 (message "Inserted %d character(s), %d line(s)"
3995 chars-inserted lines-inserted)))
3996 ;; Vi puts cursor on the last char when the yanked text doesn't contain a
3997 ;; newline; it leaves the cursor at the beginning when the text contains
3999 (if (viper-same-line (point) (mark))
4000 (or (= (point) (mark)) (viper-backward-char-carefully))
4001 (exchange-point-and-mark)
4003 (back-to-indentation)))
4004 (viper-deactivate-mark))
4007 ;; Copy region to kill-ring.
4008 ;; If BEG and END do not belong to the same buffer, copy empty region.
4009 (defun viper-copy-region-as-kill (beg end)
4011 (copy-region-as-kill beg end)
4012 (error (copy-region-as-kill beg beg))))
4015 (defun viper-delete-char (arg)
4016 "Delete next character."
4018 (let ((val (viper-p-val arg))
4020 (viper-set-destructive-command
4021 (list 'viper-delete-char val nil nil nil nil))
4022 (if (and viper-ex-style-editing
4023 (> val (viper-chars-in-region (point) (viper-line-pos 'end))))
4024 (setq val (viper-chars-in-region (point) (viper-line-pos 'end))))
4025 (if (and viper-ex-style-motion (eolp))
4026 (if (bolp) (error "") (setq val 0))) ; not bol---simply back 1 ch
4028 (viper-forward-char-carefully val)
4029 (setq end-del-pos (point)))
4030 (if viper-use-register
4032 (cond ((viper-valid-register viper-use-register '((Letter)))
4033 (viper-append-to-register
4034 (downcase viper-use-register) (point) end-del-pos))
4035 ((viper-valid-register viper-use-register)
4037 viper-use-register (point) end-del-pos nil))
4038 (t (error viper-InvalidRegister viper-use-register)))
4039 (setq viper-use-register nil)))
4042 (if viper-ex-style-motion
4043 (if (and (eolp) (not (bolp))) (backward-char 1)))
4046 (defun viper-delete-backward-char (arg)
4047 "Delete previous character. On reaching beginning of line, stop and beep."
4049 (let ((val (viper-p-val arg))
4051 (viper-set-destructive-command
4052 (list 'viper-delete-backward-char val nil nil nil nil))
4054 viper-ex-style-editing
4055 (> val (viper-chars-in-region (viper-line-pos 'start) (point))))
4056 (setq val (viper-chars-in-region (viper-line-pos 'start) (point))))
4058 (viper-backward-char-carefully val)
4059 (setq end-del-pos (point)))
4060 (if viper-use-register
4062 (cond ((viper-valid-register viper-use-register '(Letter))
4063 (viper-append-to-register
4064 (downcase viper-use-register) end-del-pos (point)))
4065 ((viper-valid-register viper-use-register)
4067 viper-use-register end-del-pos (point) nil))
4068 (t (error viper-InvalidRegister viper-use-register)))
4069 (setq viper-use-register nil)))
4070 (if (and (bolp) viper-ex-style-editing)
4072 (delete-backward-char val t)))
4075 (defun viper-del-backward-char-in-insert ()
4076 "Delete 1 char backwards while in insert mode."
4078 (if (and viper-ex-style-editing (bolp))
4080 (delete-backward-char 1 t)))
4083 (defun viper-del-backward-char-in-replace ()
4084 "Delete one character in replace mode.
4085 If `viper-delete-backwards-in-replace' is t, then DEL key actually deletes
4086 charecters. If it is nil, then the cursor just moves backwards, similarly
4087 to Vi. The variable `viper-ex-style-editing', if t, doesn't let the
4088 cursor move past the beginning of line."
4090 (cond (viper-delete-backwards-in-replace
4092 (delete-backward-char 1 t))
4093 (viper-ex-style-editing
4098 (delete-backward-char 1 t))))
4099 (viper-ex-style-editing
4104 (backward-char 1))))
4110 (defun viper-join-lines (arg)
4111 "Join this line to next, if ARG is nil. Otherwise, join ARG lines."
4113 (let ((val (viper-P-val arg)))
4114 (viper-set-destructive-command
4115 (list 'viper-join-lines val nil nil nil nil))
4116 (viper-loop (if (null val) 1 (1- val))
4121 (delete-region (point) (1- (point)))
4123 ;; fixup-whitespace sometimes does not leave space
4124 ;; between objects, so we insert it as in Vi
4125 (or (looking-at " ")
4133 (defun viper-change (beg end)
4134 (if (markerp beg) (setq beg (marker-position beg)))
4135 (if (markerp end) (setq end (marker-position end)))
4136 ;; beg is sometimes (mark t), which may be nil
4137 (or beg (setq beg end))
4139 (viper-set-complex-command-for-undo)
4140 (if viper-use-register
4142 (copy-to-register viper-use-register beg end nil)
4143 (setq viper-use-register nil)))
4144 (viper-set-replace-overlay beg end)
4145 (setq last-command nil) ; separate repl text from prev kills
4147 (if (= (viper-replace-start) (point-max))
4148 (error "End of buffer"))
4150 (setq viper-last-replace-region
4151 (buffer-substring (viper-replace-start)
4152 (viper-replace-end)))
4154 ;; protect against error while inserting "@" and other disasters
4155 ;; (e.g., read-only buff)
4156 (condition-case conds
4157 (if (or viper-allow-multiline-replace-regions
4158 (viper-same-line (viper-replace-start)
4159 (viper-replace-end)))
4161 ;; tabs cause problems in replace, so untabify
4162 (goto-char (viper-replace-end))
4163 (insert-before-markers "@") ; put placeholder after the TAB
4164 (untabify (viper-replace-start) (point))
4165 ;; del @, don't put on kill ring
4166 (delete-backward-char 1)
4168 (viper-set-replace-overlay-glyphs
4169 viper-replace-region-start-delimiter
4170 viper-replace-region-end-delimiter)
4171 ;; this move takes care of the last posn in the overlay, which
4172 ;; has to be shifted because of insert. We can't simply insert
4173 ;; "$" before-markers because then overlay-start will shift the
4174 ;; beginning of the overlay in case we are replacing a single
4175 ;; character. This fixes the bug with `s' and `cl' commands.
4176 (viper-move-replace-overlay (viper-replace-start) (point))
4177 (goto-char (viper-replace-start))
4178 (viper-change-state-to-replace t))
4179 (kill-region (viper-replace-start)
4180 (viper-replace-end))
4181 (viper-hide-replace-overlay)
4182 (viper-change-state-to-insert))
4183 (error ;; make sure that the overlay doesn't stay.
4184 ;; go back to the original point
4185 (goto-char (viper-replace-start))
4186 (viper-hide-replace-overlay)
4187 (viper-message-conditions conds))))
4190 (defun viper-change-subr (beg end)
4191 ;; beg is sometimes (mark t), which may be nil
4192 (or beg (setq beg end))
4193 (if viper-use-register
4195 (copy-to-register viper-use-register beg end nil)
4196 (setq viper-use-register nil)))
4197 (kill-region beg end)
4198 (setq this-command 'viper-change)
4199 (viper-yank-last-insertion))
4201 (defun viper-toggle-case (arg)
4202 "Toggle character case."
4204 (let ((val (viper-p-val arg)) (c))
4205 (viper-set-destructive-command
4206 (list 'viper-toggle-case val nil nil nil nil))
4208 (setq c (following-char))
4210 (if (eq c (upcase c))
4211 (insert-char (downcase c) 1)
4212 (insert-char (upcase c) 1))
4213 (if (eolp) (backward-char 1))
4214 (setq val (1- val)))))
4219 (defun viper-query-replace ()
4221 If a null string is suplied as the string to be replaced,
4222 the query replace mode will toggle between string replace
4223 and regexp replace."
4226 (setq str (viper-read-string-with-history
4227 (if viper-re-query-replace "Query replace regexp: "
4230 'viper-replace1-history
4231 (car viper-replace1-history) ; default
4233 (if (string= str "")
4235 (setq viper-re-query-replace (not viper-re-query-replace))
4236 (message "Query replace mode changed to %s"
4237 (if viper-re-query-replace "regexp replace"
4239 (if viper-re-query-replace
4240 (query-replace-regexp
4242 (viper-read-string-with-history
4243 (format "Query replace regexp `%s' with: " str)
4245 'viper-replace1-history
4246 (car viper-replace1-history) ; default
4250 (viper-read-string-with-history
4251 (format "Query replace `%s' with: " str)
4253 'viper-replace1-history
4254 (car viper-replace1-history) ; default
4260 (defun viper-mark-beginning-of-buffer ()
4261 "Mark beginning of buffer."
4264 (goto-char (point-min))
4265 (exchange-point-and-mark)
4266 (message "Mark set at the beginning of buffer"))
4268 (defun viper-mark-end-of-buffer ()
4269 "Mark end of buffer."
4272 (goto-char (point-max))
4273 (exchange-point-and-mark)
4274 (message "Mark set at the end of buffer"))
4276 (defun viper-mark-point ()
4277 "Set mark at point of buffer."
4279 (let ((char (read-char)))
4280 (cond ((and (<= ?a char) (<= char ?z))
4281 (point-to-register (viper-int-to-char (1+ (- char ?a)))))
4282 ((viper= char ?<) (viper-mark-beginning-of-buffer))
4283 ((viper= char ?>) (viper-mark-end-of-buffer))
4284 ((viper= char ?.) (viper-set-mark-if-necessary))
4285 ((viper= char ?,) (viper-cycle-through-mark-ring))
4286 ((viper= char ?^) (push-mark viper-saved-mark t t))
4287 ((viper= char ?D) (mark-defun))
4291 ;; Algorithm: If first invocation of this command save mark on ring, goto
4292 ;; mark, M0, and pop the most recent elt from the mark ring into mark,
4293 ;; making it into the new mark, M1.
4294 ;; Push this mark back and set mark to the original point position, p1.
4295 ;; So, if you hit '' or `` then you can return to p1.
4297 ;; If repeated command, pop top elt from the ring into mark and
4298 ;; jump there. This forgets the position, p1, and puts M1 back into mark.
4299 ;; Then we save the current pos, which is M0, jump to M1 and pop M2 from
4300 ;; the ring into mark. Push M2 back on the ring and set mark to M0.
4302 (defun viper-cycle-through-mark-ring ()
4303 "Visit previous locations on the mark ring.
4304 One can use `` and '' to temporarily jump 1 step back."
4305 (let* ((sv-pt (point)))
4306 ;; if repeated `m,' command, pop the previously saved mark.
4307 ;; Prev saved mark is actually prev saved point. It is used if the
4308 ;; user types `` or '' and is discarded
4309 ;; from the mark ring by the next `m,' command.
4310 ;; In any case, go to the previous or previously saved mark.
4311 ;; Then push the current mark (popped off the ring) and set current
4312 ;; point to be the mark. Current pt as mark is discarded by the next
4314 (if (eq last-command 'viper-cycle-through-mark-ring)
4316 ;; save current mark if the first iteration
4317 (setq mark-ring (delete (viper-mark-marker) mark-ring))
4319 (push-mark (mark t) t)) )
4321 (set-mark-command 1)
4322 ;; don't duplicate mark on the ring
4323 (setq mark-ring (delete (viper-mark-marker) mark-ring))
4325 (viper-deactivate-mark)
4326 (setq this-command 'viper-cycle-through-mark-ring)
4330 (defun viper-goto-mark (arg)
4333 (let ((char (read-char))
4334 (com (viper-getcom arg)))
4335 (viper-goto-mark-subr char com nil)))
4337 (defun viper-goto-mark-and-skip-white (arg)
4338 "Go to mark and skip to first non-white character on line."
4340 (let ((char (read-char))
4341 (com (viper-getCom arg)))
4342 (viper-goto-mark-subr char com t)))
4344 (defun viper-goto-mark-subr (char com skip-white)
4347 (error "Empty buffer")
4349 (cond ((viper-valid-register char '(letter))
4350 (let* ((buff (current-buffer))
4351 (reg (viper-int-to-char (1+ (- char ?a))))
4352 (text-marker (get-register reg)))
4353 ;; If marker points to file that had markers set (and those markers
4354 ;; were saved (as e.g., in session.el), then restore those markers
4355 (if (and (consp text-marker)
4356 (eq (car text-marker) 'file-query)
4357 (or (find-buffer-visiting (nth 1 text-marker))
4358 (y-or-n-p (format "Visit file %s again? "
4359 (nth 1 text-marker)))))
4361 (find-file (nth 1 text-marker))
4362 (when (and (<= (nth 2 text-marker) (point-max))
4363 (<= (point-min) (nth 2 text-marker)))
4364 (setq text-marker (copy-marker (nth 2 text-marker)))
4365 (set-register reg text-marker))))
4366 (if com (viper-move-marker-locally 'viper-com-point (point)))
4367 (if (not (viper-valid-marker text-marker))
4368 (error viper-EmptyTextmarker char))
4369 (if (and (viper-same-line (point) viper-last-jump)
4370 (= (point) viper-last-jump-ignore))
4371 (push-mark viper-last-jump t)
4372 (push-mark nil t)) ; no msg
4373 (viper-register-to-point reg)
4374 (setq viper-last-jump (point-marker))
4376 (back-to-indentation)
4377 (setq viper-last-jump-ignore (point))))
4379 (if (equal buff (current-buffer))
4380 (viper-execute-com (if skip-white
4381 'viper-goto-mark-and-skip-white
4384 (switch-to-buffer buff)
4385 (goto-char viper-com-point)
4386 (viper-change-state-to-vi)
4388 ((and (not skip-white) (viper= char ?`))
4389 (if com (viper-move-marker-locally 'viper-com-point (point)))
4390 (if (and (viper-same-line (point) viper-last-jump)
4391 (= (point) viper-last-jump-ignore))
4392 (goto-char viper-last-jump))
4393 (if (null (mark t)) (error "Mark is not set in this buffer"))
4394 (if (= (point) (mark t)) (pop-mark))
4395 (exchange-point-and-mark)
4396 (setq viper-last-jump (point-marker)
4397 viper-last-jump-ignore 0)
4398 (if com (viper-execute-com 'viper-goto-mark nil com)))
4399 ((and skip-white (viper= char ?'))
4400 (if com (viper-move-marker-locally 'viper-com-point (point)))
4401 (if (and (viper-same-line (point) viper-last-jump)
4402 (= (point) viper-last-jump-ignore))
4403 (goto-char viper-last-jump))
4404 (if (= (point) (mark t)) (pop-mark))
4405 (exchange-point-and-mark)
4406 (setq viper-last-jump (point))
4407 (back-to-indentation)
4408 (setq viper-last-jump-ignore (point))
4409 (if com (viper-execute-com 'viper-goto-mark-and-skip-white nil com)))
4410 (t (error viper-InvalidTextmarker char))))
4412 (defun viper-insert-tab ()
4416 (defun viper-exchange-point-and-mark ()
4418 (exchange-point-and-mark)
4419 (back-to-indentation))
4421 ;; Input Mode Indentation
4423 ;; Returns t, if the string before point matches the regexp STR.
4424 (defsubst viper-looking-back (str)
4425 (and (save-excursion (re-search-backward str nil t))
4426 (= (point) (match-end 0))))
4429 (defun viper-forward-indent ()
4430 "Indent forward -- `C-t' in Vi."
4433 (indent-to (+ (current-column) viper-shift-width)))
4435 (defun viper-backward-indent ()
4436 "Backtab, C-d in VI"
4439 (let ((p (point)) (c (current-column)) bol (indent t))
4440 (if (viper-looking-back "[0^]")
4442 (if (eq ?^ (preceding-char))
4443 (setq viper-preserve-indent t))
4444 (delete-backward-char 1)
4450 (if (re-search-backward "[^ \t]" bol 1) (forward-char))
4451 (delete-region (point) p)
4453 (indent-to (- c viper-shift-width)))
4454 (if (or (bolp) (viper-looking-back "[^ \t]"))
4455 (setq viper-cted nil)))))
4458 (defun viper-indent-line (col)
4459 (if viper-auto-indent
4462 (if (and viper-electric-mode
4463 (not (memq major-mode '(fundamental-mode
4465 paragraph-indent-text-mode))))
4466 (indent-according-to-mode)
4470 (defun viper-autoindent ()
4471 "Auto Indentation, Vi-style."
4473 (let ((col (current-indentation)))
4474 (if abbrev-mode (expand-abbrev))
4475 (if viper-preserve-indent
4476 (setq viper-preserve-indent nil)
4477 (setq viper-current-indent col))
4478 ;; don't leave whitespace lines around
4479 (if (memq last-command
4481 viper-open-line viper-Open-line
4482 viper-replace-state-exit-cmd))
4483 (indent-to-left-margin))
4484 ;; use \n instead of newline, or else <Return> will move the insert point
4487 (viper-indent-line viper-current-indent)
4491 ;; Viewing registers
4493 (defun viper-ket-function (arg)
4494 "Function called by \], the ket. View registers and call \]\]."
4496 (let ((reg (read-char)))
4497 (cond ((viper-valid-register reg '(letter Letter))
4498 (view-register (downcase reg)))
4499 ((viper-valid-register reg '(digit))
4500 (let ((text (current-kill (- reg ?1) 'do-not-rotate)))
4501 (with-output-to-temp-buffer " *viper-info*"
4502 (princ (format "Register %c contains the string:\n" reg))
4506 (viper-next-heading arg))
4508 viper-InvalidRegister reg)))))
4510 (defun viper-brac-function (arg)
4511 "Function called by \[, the brac. View textmarkers and call \[\["
4513 (let ((reg (read-char)))
4514 (cond ((viper= ?\[ reg)
4515 (viper-prev-heading arg))
4517 (viper-heading-end arg))
4518 ((viper-valid-register reg '(letter))
4519 (let* ((val (get-register (viper-int-to-char (1+ (- reg ?a)))))
4520 (buf (if (not (markerp val))
4521 (error viper-EmptyTextmarker reg)
4522 (marker-buffer val)))
4523 (pos (marker-position val))
4524 line-no text (s pos) (e pos))
4525 (with-output-to-temp-buffer " *viper-info*"
4530 (setq line-no (1+ (count-lines (point-min) val)))
4533 (if (re-search-backward "[^ \t]" nil t)
4539 (if (re-search-forward "[^ \t]" nil t)
4543 (setq text (buffer-substring s e))
4544 (setq text (format "%s<%c>%s"
4545 (substring text 0 (- pos s))
4546 reg (substring text (- pos s)))))
4549 "Textmarker `%c' is in buffer `%s' at line %d.\n"
4550 reg (buffer-name buf) line-no))
4551 (princ (format "Here is some text around %c:\n\n %s"
4553 (princ (format viper-EmptyTextmarker reg))))
4555 (t (error viper-InvalidTextmarker reg)))))
4559 ;; commands in insertion mode
4561 (defun viper-delete-backward-word (arg)
4562 "Delete previous word."
4567 (delete-region (point) (mark t))
4571 (defun viper-set-expert-level (&optional dont-change-unless)
4572 "Sets the expert level for a Viper user.
4573 Can be called interactively to change (temporarily or permanently) the
4574 current expert level.
4576 The optional argument DONT-CHANGE-UNLESS, if not nil, says that
4577 the level should not be changed, unless its current value is
4578 meaningless (i.e., not one of 1,2,3,4,5).
4580 User level determines the setting of Viper variables that are most
4581 sensitive for VI-style look-and-feel."
4585 (if (not (natnump viper-expert-level)) (setq viper-expert-level 0))
4587 (save-window-excursion
4588 (delete-other-windows)
4589 ;; if 0 < viper-expert-level < viper-max-expert-level
4590 ;; & dont-change-unless = t -- use it; else ask
4591 (viper-ask-level dont-change-unless))
4593 (setq viper-always t
4594 viper-ex-style-motion t
4595 viper-ex-style-editing t
4596 viper-want-ctl-h-help nil)
4598 (cond ((eq viper-expert-level 1) ; novice or beginner
4599 (global-set-key ; in emacs-state
4601 (if (viper-window-display-p) 'viper-iconify 'suspend-emacs))
4602 (setq viper-no-multiple-ESC t
4604 viper-vi-style-in-minibuffer t
4605 viper-search-wrap-around-t t
4606 viper-electric-mode nil
4607 viper-want-emacs-keys-in-vi nil
4608 viper-want-emacs-keys-in-insert nil))
4610 ((and (> viper-expert-level 1) (< viper-expert-level 5))
4611 ;; intermediate to guru
4612 (setq viper-no-multiple-ESC (if (viper-window-display-p)
4614 viper-electric-mode t
4615 viper-want-emacs-keys-in-vi t
4616 viper-want-emacs-keys-in-insert (> viper-expert-level 2))
4618 (if (eq viper-expert-level 4) ; respect user's ex-style motion
4619 ; and viper-no-multiple-ESC
4622 viper-ex-style-editing
4623 (viper-standard-value 'viper-ex-style-editing)
4624 viper-ex-style-motion
4625 (viper-standard-value 'viper-ex-style-motion))
4626 (setq viper-ex-style-motion
4627 (viper-standard-value 'viper-ex-style-motion)
4628 viper-ex-style-editing
4629 (viper-standard-value 'viper-ex-style-editing)
4631 (viper-standard-value 'viper-re-search)
4632 viper-no-multiple-ESC
4633 (viper-standard-value 'viper-no-multiple-ESC)))))
4636 ;; Ideally, if 5 is selected, a buffer should pop up to let the
4637 ;; user toggle the values of variables.
4638 (t (setq-default viper-ex-style-editing
4639 (viper-standard-value 'viper-ex-style-editing)
4640 viper-ex-style-motion
4641 (viper-standard-value 'viper-ex-style-motion))
4642 (setq viper-want-ctl-h-help
4643 (viper-standard-value 'viper-want-ctl-h-help)
4645 (viper-standard-value 'viper-always)
4646 viper-no-multiple-ESC
4647 (viper-standard-value 'viper-no-multiple-ESC)
4648 viper-ex-style-motion
4649 (viper-standard-value 'viper-ex-style-motion)
4650 viper-ex-style-editing
4651 (viper-standard-value 'viper-ex-style-editing)
4653 (viper-standard-value 'viper-re-search)
4655 (viper-standard-value 'viper-electric-mode)
4656 viper-want-emacs-keys-in-vi
4657 (viper-standard-value 'viper-want-emacs-keys-in-vi)
4658 viper-want-emacs-keys-in-insert
4659 (viper-standard-value 'viper-want-emacs-keys-in-insert))))
4661 (viper-set-mode-vars-for viper-current-state)
4662 (if (or viper-always
4663 (and (> viper-expert-level 0) (> 5 viper-expert-level)))
4667 ;; Ask user expert level.
4668 (defun viper-ask-level (dont-change-unless)
4669 (let ((ask-buffer " *viper-ask-level*")
4670 level-changed repeated)
4671 (save-window-excursion
4672 (switch-to-buffer ask-buffer)
4674 (while (or (> viper-expert-level viper-max-expert-level)
4675 (< viper-expert-level 1)
4676 (null dont-change-unless))
4680 (message "Invalid user level")
4683 (setq dont-change-unless t
4686 Please specify your level of familiarity with the venomous VI PERil
4687 (and the VI Plan for Emacs Rescue).
4688 You can change it at any time by typing `M-x viper-set-expert-level RET'
4690 1 -- BEGINNER: Almost all Emacs features are suppressed.
4691 Feels almost like straight Vi. File name completion and
4692 command history in the minibuffer are thrown in as a bonus.
4693 To use Emacs productively, you must reach level 3 or higher.
4694 2 -- MASTER: C-c now has its standard Emacs meaning in Vi command state,
4695 so most Emacs commands can be used when Viper is in Vi state.
4696 Good progress---you are well on the way to level 3!
4697 3 -- GRAND MASTER: Like 3, but most Emacs commands are available also
4698 in Viper's insert state.
4699 4 -- GURU: Like 3, but user settings are respected for viper-no-multiple-ESC,
4700 viper-ex-style-motion, viper-ex-style-editing, and
4701 viper-re-search variables. Adjust these settings to your taste.
4702 5 -- WIZARD: Like 4, but user settings are also respected for viper-always,
4703 viper-electric-mode, viper-want-ctl-h-help, viper-want-emacs-keys-in-vi,
4704 and viper-want-emacs-keys-in-insert. Adjust these to your taste.
4706 Please, specify your level now: ")
4708 (setq viper-expert-level (- (viper-read-char-exclusive) ?0))
4711 ;; tell the user if level was changed
4715 (format "\n\n\n\n\n\t\tYou have selected user level %d"
4716 viper-expert-level))
4717 (if (y-or-n-p "Do you wish to make this change permanent? ")
4718 ;; save the setting for viper-expert-level
4721 (format "Saving user level %d ..." viper-expert-level)
4722 viper-custom-file-name))
4724 (bury-buffer) ; remove ask-buffer from screen
4734 ;; if ENFORCE-BUFFER is not nil, error if CHAR is a marker in another buffer
4735 (defun viper-register-to-point (char &optional enforce-buffer)
4736 "Like jump-to-register, but switches to another buffer in another window."
4737 (interactive "cViper register to point: ")
4738 (let ((val (get-register char)))
4740 ((and (fboundp 'frame-configuration-p)
4741 (frame-configuration-p val))
4742 (set-frame-configuration val))
4743 ((window-configuration-p val)
4744 (set-window-configuration val))
4745 ((viper-valid-marker val)
4746 (if (and enforce-buffer
4747 (not (equal (current-buffer) (marker-buffer val))))
4748 (error (concat viper-EmptyTextmarker " in this buffer")
4749 (viper-int-to-char (1- (+ char ?a)))))
4750 (pop-to-buffer (marker-buffer val))
4752 ((and (consp val) (eq (car val) 'file))
4753 (find-file (cdr val)))
4755 (error viper-EmptyTextmarker (viper-int-to-char (1- (+ char ?a))))))))
4758 (defun viper-save-kill-buffer ()
4759 "Save then kill current buffer."
4761 (if (< viper-expert-level 2)
4762 (save-buffers-kill-emacs)
4764 (kill-buffer (current-buffer))))
4770 (defun viper-submit-report ()
4771 "Submit bug report on Viper."
4773 (let ((reporter-prompt-for-summary-p t)
4774 (viper-device-type (viper-device-type))
4775 color-display-p frame-parameters
4776 minibuffer-emacs-face minibuffer-vi-face minibuffer-insert-face
4777 varlist salutation window-config)
4779 ;; If mode info is needed, add variable to `let' and then set it below,
4780 ;; like we did with color-display-p.
4781 (setq color-display-p (if (viper-window-display-p)
4782 (viper-color-display-p)
4784 minibuffer-vi-face (if (viper-has-face-support-p)
4785 (viper-get-face viper-minibuffer-vi-face)
4787 minibuffer-insert-face (if (viper-has-face-support-p)
4789 viper-minibuffer-insert-face)
4791 minibuffer-emacs-face (if (viper-has-face-support-p)
4793 viper-minibuffer-emacs-face)
4795 frame-parameters (if (fboundp 'frame-parameters)
4796 (frame-parameters (selected-frame))))
4798 (setq varlist (list 'viper-vi-minibuffer-minor-mode
4799 'viper-insert-minibuffer-minor-mode
4800 'viper-vi-intercept-minor-mode
4801 'viper-vi-local-user-minor-mode
4802 'viper-vi-kbd-minor-mode
4803 'viper-vi-global-user-minor-mode
4804 'viper-vi-state-modifier-minor-mode
4805 'viper-vi-diehard-minor-mode
4806 'viper-vi-basic-minor-mode
4807 'viper-replace-minor-mode
4808 'viper-insert-intercept-minor-mode
4809 'viper-insert-local-user-minor-mode
4810 'viper-insert-kbd-minor-mode
4811 'viper-insert-global-user-minor-mode
4812 'viper-insert-state-modifier-minor-mode
4813 'viper-insert-diehard-minor-mode
4814 'viper-insert-basic-minor-mode
4815 'viper-emacs-intercept-minor-mode
4816 'viper-emacs-local-user-minor-mode
4817 'viper-emacs-kbd-minor-mode
4818 'viper-emacs-global-user-minor-mode
4819 'viper-emacs-state-modifier-minor-mode
4820 'viper-automatic-iso-accents
4821 'viper-special-input-method
4822 'viper-want-emacs-keys-in-insert
4823 'viper-want-emacs-keys-in-vi
4824 'viper-keep-point-on-undo
4825 'viper-no-multiple-ESC
4826 'viper-electric-mode
4828 'viper-want-ctl-h-help
4829 'viper-ex-style-editing
4830 'viper-delete-backwards-in-replace
4831 'viper-vi-style-in-minibuffer
4832 'viper-vi-state-hook
4833 'viper-insert-state-hook
4834 'viper-replace-state-hook
4835 'viper-emacs-state-hook
4836 'ex-cycle-other-window
4837 'ex-cycle-through-non-files
4844 'minibuffer-insert-face
4845 'minibuffer-emacs-face
4848 Congratulations! You may have unearthed a bug in Viper!
4849 Please mail a concise, accurate summary of the problem to the address above.
4851 -------------------------------------------------------------------")
4852 (setq window-config (current-window-configuration))
4853 (with-output-to-temp-buffer " *viper-info*"
4854 (switch-to-buffer " *viper-info*")
4855 (delete-other-windows)
4857 PLEASE FOLLOW THESE PROCEDURES
4858 ------------------------------
4860 Before reporting a bug, please verify that it is related to Viper, and is
4861 not cause by other packages you are using.
4863 Don't report compilation warnings, unless you are certain that there is a
4864 problem. These warnings are normal and unavoidable.
4866 Please note that users should not modify variables and keymaps other than
4867 those advertised in the manual. Such `customization' is likely to crash
4868 Viper, as it would any other improperly customized Emacs package.
4870 If you are reporting an error message received while executing one of the
4871 Viper commands, type:
4873 M-x set-variable <Return> debug-on-error <Return> t <Return>
4875 Then reproduce the error. The above command will cause Emacs to produce a
4876 back trace of the execution that leads to the error. Please include this
4877 trace in your bug report.
4879 If you believe that one of Viper's commands goes into an infinite loop
4880 \(e.g., Emacs freezes\), type:
4882 M-x set-variable <Return> debug-on-quit <Return> t <Return>
4884 Then reproduce the problem. Wait for a few seconds, then type C-g to abort
4885 the current command. Include the resulting back trace in the bug report.
4887 Mail anyway (y or n)? ")
4888 (if (y-or-n-p "Mail anyway? ")
4890 (set-window-configuration window-config)
4891 (error "Bug report aborted")))
4894 (set-window-configuration window-config)
4896 (reporter-submit-bug-report "kifer@cs.sunysb.edu"
4899 nil 'delete-other-windows
4905 ;; Smoothes out the difference between Emacs' unread-command-events
4906 ;; and XEmacs unread-command-event. Arg is a character, an event, a list of
4907 ;; events or a sequence of keys.
4909 ;; Due to the way unread-command-events in Emacs (not XEmacs), a non-event
4910 ;; symbol in unread-command-events list may cause Emacs to turn this symbol
4911 ;; into an event. Below, we delete nil from event lists, since nil is the most
4912 ;; common symbol that might appear in this wrong context.
4913 (defun viper-set-unread-command-events (arg)
4916 unread-command-events
4918 (cond ((eventp arg) (list arg))
4921 (listify-key-sequence arg))
4923 "viper-set-unread-command-events: Invalid argument, %S"
4925 (if (not (eventp nil))
4926 (setq new-events (delq nil new-events)))
4927 (append new-events unread-command-events)))
4930 unread-command-events
4932 (cond ((viper-characterp arg) (list (character-to-event arg)))
4933 ((eventp arg) (list arg))
4934 ((stringp arg) (mapcar 'character-to-event arg))
4935 ((vectorp arg) (append arg nil)) ; turn into list
4936 ((listp arg) (viper-eventify-list-xemacs arg))
4938 "viper-set-unread-command-events: Invalid argument, %S" arg)))
4939 unread-command-events))))
4941 ;; list is assumed to be a list of events of characters
4942 (defun viper-eventify-list-xemacs (lis)
4945 (cond ((viper-characterp elt) (character-to-event elt))
4948 "viper-eventify-list-xemacs: can't convert to event, %S"
4954 ;;; viper-cmd.el ends here