1 ;;; viper-cmd.el --- Vi command support for Viper
3 ;; Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
4 ;; 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
6 ;; Author: Michael Kifer <kifer@cs.stonybrook.edu>
8 ;; This file is part of GNU Emacs.
10 ;; GNU Emacs is free software: you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation, either version 3 of the License, or
13 ;; (at your option) any later version.
15 ;; GNU Emacs is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
30 (defvar viper-minibuffer-current-face
)
31 (defvar viper-minibuffer-insert-face
)
32 (defvar viper-minibuffer-vi-face
)
33 (defvar viper-minibuffer-emacs-face
)
35 (defvar viper-mode-string
)
36 (defvar viper-custom-file-name
)
37 (defvar viper--key-maps
)
38 (defvar viper--intercept-key-maps
)
39 (defvar iso-accents-mode
)
41 (defvar quail-current-str
)
42 (defvar mark-even-if-inactive
)
45 (defvar undo-beg-posn
)
46 (defvar undo-end-posn
)
49 (unless (fboundp 'declare-function
) (defmacro declare-function
(&rest r
))))
63 ;; These test functions are shamelessly lifted from vip 4.4.2 by Aamod Sane
65 ;; generate test functions
66 ;; given symbol foo, foo-p is the test function, foos is the set of
68 ;; (macroexpand '(viper-test-com-defun foo))
69 ;; (defun foo-p (com) (consp (memq com foos)))
71 (defmacro viper-test-com-defun
(name)
72 (let* ((snm (symbol-name name
))
73 (nm-p (intern (concat snm
"-p")))
74 (nms (intern (concat snm
"s"))))
76 (consp (viper-memq-char com
,nms
)
79 ;; Variables for defining VI commands
81 ;; Modifying commands that can be prefixes to movement commands
82 (defvar viper-prefix-commands
'(?c ?d ?y ?
! ?
= ?
# ?
< ?
> ?
\"))
83 ;; define viper-prefix-command-p
84 (viper-test-com-defun viper-prefix-command)
86 ;; Commands that are pairs eg. dd. r and R here are a hack
87 (defconst viper-charpair-commands
'(?c ?d ?y ?
! ?
= ?
< ?
> ?r ?R
))
88 ;; define viper-charpair-command-p
89 (viper-test-com-defun viper-charpair-command)
91 (defconst viper-movement-commands
'(?b ?B ?e ?E ?f ?F ?G ?h ?j ?k ?l
92 ?H ?M ?L ?n ?t ?T ?w ?W ?$ ?%
93 ?^ ?
( ?
) ?- ?
+ ?| ?
{ ?
} ?
[ ?
] ?
' ?
`
94 ?\
; ?, ?0 ?? ?/ ?\ ?\C-m
99 ;; define viper-movement-command-p
100 (viper-test-com-defun viper-movement-command)
103 (defconst viper-digit-commands
'(?
1 ?
2 ?
3 ?
4 ?
5 ?
6 ?
7 ?
8 ?
9))
105 ;; define viper-digit-command-p
106 (viper-test-com-defun viper-digit-command)
108 ;; Commands that can be repeated by . (dotted)
109 (defconst viper-dotable-commands
'(?c ?d ?C ?s ?S ?D ?
> ?
<))
110 ;; define viper-dotable-command-p
111 (viper-test-com-defun viper-dotable-command)
113 ;; Commands that can follow a #
114 (defconst viper-hash-commands
'(?c ?C ?g ?q ?s
))
115 ;; define viper-hash-command-p
116 (viper-test-com-defun viper-hash-command)
118 ;; Commands that may have registers as prefix
119 (defconst viper-regsuffix-commands
'(?d ?y ?Y ?D ?p ?P ?x ?X
))
120 ;; define viper-regsuffix-command-p
121 (viper-test-com-defun viper-regsuffix-command)
123 (defconst viper-vi-commands
(append viper-movement-commands
125 viper-dotable-commands
126 viper-charpair-commands
128 viper-prefix-commands
129 viper-regsuffix-commands
)
130 "The list of all commands in Vi-state.")
131 ;; define viper-vi-command-p
132 (viper-test-com-defun viper-vi-command)
134 ;; Where viper saves mark. This mark is resurrected by m^
135 (defvar viper-saved-mark nil
)
137 ;; Contains user settings for vars affected by viper-set-expert-level function.
138 ;; Not a user option.
139 (defvar viper-saved-user-settings nil
)
147 ;; Runs viper-after-change-functions inside after-change-functions
148 (defun viper-after-change-sentinel (beg end len
)
149 (run-hook-with-args 'viper-after-change-functions beg end len
))
151 ;; Runs viper-before-change-functions inside before-change-functions
152 (defun viper-before-change-sentinel (beg end
)
153 (run-hook-with-args 'viper-before-change-functions beg end
))
155 (defsubst viper-post-command-sentinel
()
156 (condition-case conds
157 (run-hooks 'viper-post-command-hooks
)
158 (error (viper-message-conditions conds
)))
159 (if (eq viper-current-state
'vi-state
)
160 (viper-restore-cursor-color 'after-insert-mode
)))
162 (defsubst viper-pre-command-sentinel
()
163 (run-hooks 'viper-pre-command-hooks
))
165 ;; Needed so that Viper will be able to figure the last inserted
166 ;; chunk of text with reasonable accuracy.
167 (defsubst viper-insert-state-post-command-sentinel
()
168 (if (and (memq viper-current-state
'(insert-state replace-state
))
170 (>= (point) viper-insert-point
))
171 (setq viper-last-posn-while-in-insert-state
(point-marker)))
172 (or (viper-overlay-p viper-replace-overlay
)
174 (viper-set-replace-overlay (point-min) (point-min))
175 (viper-hide-replace-overlay)))
176 (if (eq viper-current-state
'insert-state
)
177 (let ((icolor (viper-frame-value viper-insert-state-cursor-color
)))
178 (or (stringp (viper-get-saved-cursor-color-in-insert-mode))
179 (string= (viper-get-cursor-color) icolor
)
180 ;; save current color, if not already saved
181 (viper-save-cursor-color 'before-insert-mode
))
182 ;; set insert mode cursor color
183 (viper-change-cursor-color icolor
)))
184 (let ((ecolor (viper-frame-value viper-emacs-state-cursor-color
)))
185 (when (and ecolor
(eq viper-current-state
'emacs-state
))
186 (or (stringp (viper-get-saved-cursor-color-in-emacs-mode))
187 (string= (viper-get-cursor-color) ecolor
)
188 ;; save current color, if not already saved
189 (viper-save-cursor-color 'before-emacs-mode
))
190 ;; set emacs mode cursor color
191 (viper-change-cursor-color ecolor
)))
193 (if (and (memq this-command
'(dabbrev-expand hippie-expand
))
194 (integerp viper-pre-command-point
)
195 (markerp viper-insert-point
)
196 (marker-position viper-insert-point
)
197 (> viper-insert-point viper-pre-command-point
))
198 (viper-move-marker-locally viper-insert-point viper-pre-command-point
)))
200 (defsubst viper-preserve-cursor-color
()
201 (or (memq this-command
'(self-insert-command
202 viper-del-backward-char-in-insert
203 viper-del-backward-char-in-replace
204 viper-delete-backward-char
207 (memq (viper-event-key last-command-event
)
208 '(up down left right
(meta f
) (meta b
)
209 (control n
) (control p
) (control f
) (control b
)))))
211 (defsubst viper-insert-state-pre-command-sentinel
()
212 (or (viper-preserve-cursor-color)
213 (viper-restore-cursor-color 'after-insert-mode
))
214 (if (and (memq this-command
'(dabbrev-expand hippie-expand
))
215 (markerp viper-insert-point
)
216 (marker-position viper-insert-point
))
217 (setq viper-pre-command-point
(marker-position viper-insert-point
))))
219 (defun viper-R-state-post-command-sentinel ()
220 ;; Restoring cursor color is needed despite
221 ;; viper-replace-state-pre-command-sentinel: When you jump to another buffer
222 ;; in another frame, the pre-command hook won't change cursor color to
223 ;; default in that other frame. So, if the second frame cursor was red and
224 ;; we set the point outside the replacement region, then the cursor color
225 ;; will remain red. Restoring the default, below, prevents this.
226 (if (and (<= (viper-replace-start) (point))
227 (<= (point) (viper-replace-end)))
228 (viper-change-cursor-color
229 (viper-frame-value viper-replace-overlay-cursor-color
))
230 (viper-restore-cursor-color 'after-replace-mode
)))
232 ;; to speed up, don't change cursor color before self-insert
233 ;; and common move commands
234 (defsubst viper-replace-state-pre-command-sentinel
()
235 (or (viper-preserve-cursor-color)
236 (viper-restore-cursor-color 'after-replace-mode
)))
239 ;; Make sure we don't delete more than needed.
240 ;; This is executed at viper-last-posn-in-replace-region
241 (defsubst viper-trim-replace-chars-to-delete-if-necessary
()
242 (setq viper-replace-chars-to-delete
244 (min viper-replace-chars-to-delete
245 ;; Don't delete more than to the end of repl overlay
246 (viper-chars-in-region
247 (viper-replace-end) viper-last-posn-in-replace-region
)
248 ;; point is viper-last-posn-in-replace-region now
249 ;; So, this limits deletion to the end of line
250 (viper-chars-in-region (point) (viper-line-pos 'end
))
254 (defun viper-replace-state-post-command-sentinel ()
255 ;; Restoring cursor color is needed despite
256 ;; viper-replace-state-pre-command-sentinel: When one jumps to another buffer
257 ;; in another frame, the pre-command hook won't change cursor color to
258 ;; default in that other frame. So, if the second frame cursor was red and
259 ;; we set the point outside the replacement region, then the cursor color
260 ;; will remain red. Restoring the default, below, fixes this problem.
262 ;; We optimize for some commands, like self-insert-command,
263 ;; viper-delete-backward-char, etc., since they either don't change
264 ;; cursor color or, if they terminate replace mode, the color will be changed
265 ;; in viper-finish-change
266 (or (viper-preserve-cursor-color)
267 (viper-restore-cursor-color 'after-replace-mode
))
269 ((eq viper-current-state
'replace-state
)
270 ;; delete characters to compensate for inserted chars.
271 (let ((replace-boundary (viper-replace-end)))
273 (goto-char viper-last-posn-in-replace-region
)
274 (viper-trim-replace-chars-to-delete-if-necessary)
275 (delete-char viper-replace-chars-to-delete
)
276 (setq viper-replace-chars-to-delete
0)
277 ;; terminate replace mode if reached replace limit
278 (if (= viper-last-posn-in-replace-region
(viper-replace-end))
279 (viper-finish-change)))
281 (when (viper-pos-within-region
282 (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
286 (viper-frame-value viper-replace-overlay-cursor-color
)))
287 (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 (when (featurep 'xemacs
)
302 (make-local-hook 'viper-after-change-functions
)
303 (make-local-hook 'viper-before-change-functions
)
304 (make-local-hook 'viper-post-command-hooks
)
305 (make-local-hook 'viper-pre-command-hooks
))
307 (remove-hook 'post-command-hook
'viper-post-command-sentinel
)
308 (add-hook 'post-command-hook
'viper-post-command-sentinel
)
309 (remove-hook 'pre-command-hook
'viper-pre-command-sentinel
)
310 (add-hook 'pre-command-hook
'viper-pre-command-sentinel t
)
311 ;; These hooks will be added back if switching to insert/replace mode
312 (remove-hook 'viper-post-command-hooks
313 'viper-insert-state-post-command-sentinel
'local
)
314 (remove-hook 'viper-pre-command-hooks
315 'viper-insert-state-pre-command-sentinel
'local
)
316 (setq viper-intermediate-command nil
)
317 (cond ((eq new-state
'vi-state
)
318 (cond ((member viper-current-state
'(insert-state replace-state
))
320 ;; move viper-last-posn-while-in-insert-state
321 ;; This is a normal hook that is executed in insert/replace
322 ;; states after each command. In Vi/Emacs state, it does
323 ;; nothing. We need to execute it here to make sure that
324 ;; the last posn was recorded when we hit ESC.
325 ;; It may be left unrecorded if the last thing done in
326 ;; insert/repl state was dabbrev-expansion or abbrev
327 ;; expansion caused by hitting ESC
328 (viper-insert-state-post-command-sentinel)
330 (condition-case conds
332 (viper-save-last-insertion
334 viper-last-posn-while-in-insert-state
)
335 (if viper-began-as-replace
336 (setq viper-began-as-replace nil
)
337 ;; repeat insert commands if numerical arg > 1
339 (viper-repeat-insert-command))))
341 (viper-message-conditions conds
)))
343 (if (> (length viper-last-insertion
) 0)
344 (viper-push-onto-ring viper-last-insertion
345 'viper-insertion-ring
))
347 (if viper-ESC-moves-cursor-back
348 (or (bolp) (viper-beginning-of-field) (backward-char 1))))
352 ((memq new-state
'(insert-state replace-state
))
353 (if (memq viper-current-state
'(emacs-state vi-state
))
354 (viper-move-marker-locally 'viper-insert-point
(point)))
355 (viper-move-marker-locally
356 'viper-last-posn-while-in-insert-state
(point))
357 (add-hook 'viper-post-command-hooks
358 'viper-insert-state-post-command-sentinel t
'local
)
359 (add-hook 'viper-pre-command-hooks
360 'viper-insert-state-pre-command-sentinel t
'local
))
363 ;; Nothing needs to be done to switch to emacs mode! Just set some
364 ;; variables, which is already done in viper-change-state-to-emacs!
367 ;; always turn off iso-accents-mode in vi-state, or else we won't be able to
368 ;; use the keys `,',^ , as they will do accents instead of Vi actions.
369 (cond ((eq new-state
'vi-state
) (viper-set-iso-accents-mode nil
));accents off
370 (viper-automatic-iso-accents (viper-set-iso-accents-mode t
));accents on
371 (t (viper-set-iso-accents-mode nil
)))
372 ;; Always turn off quail mode in vi state
373 (cond ((eq new-state
'vi-state
) (viper-set-input-method nil
)) ;intl input off
374 (viper-special-input-method (viper-set-input-method t
)) ;intl input on
375 (t (viper-set-input-method nil
)))
377 (setq viper-current-state new-state
)
379 (viper-update-syntax-classes)
380 (viper-normalize-minor-mode-map-alist)
381 (viper-adjust-keys-for new-state
)
382 (viper-set-mode-vars-for new-state
)
383 (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 viper--intercept-key-maps
434 (cons 'viper-vi-intercept-minor-mode viper-vi-intercept-map)
435 (cons 'viper-insert-intercept-minor-mode viper-insert-intercept-map)
436 (cons 'viper-emacs-intercept-minor-mode viper-emacs-intercept-map)
438 (setq viper--key-maps
439 (list (cons 'viper-vi-minibuffer-minor-mode viper-minibuffer-map)
440 (cons 'viper-vi-local-user-minor-mode viper-vi-local-user-map)
441 (cons 'viper-vi-kbd-minor-mode viper-vi-kbd-map)
442 (cons 'viper-vi-global-user-minor-mode viper-vi-global-user-map)
443 (cons 'viper-vi-state-modifier-minor-mode
445 (cdr (assoc major-mode viper-vi-state-modifier-alist)))
446 (cdr (assoc major-mode viper-vi-state-modifier-alist))
448 (cons 'viper-vi-diehard-minor-mode viper-vi-diehard-map)
449 (cons 'viper-vi-basic-minor-mode viper-vi-basic-map)
450 (cons 'viper-replace-minor-mode viper-replace-map)
451 ;; viper-insert-minibuffer-minor-mode must come after
452 ;; viper-replace-minor-mode
453 (cons 'viper-insert-minibuffer-minor-mode
454 viper-minibuffer-map)
455 (cons 'viper-insert-local-user-minor-mode
456 viper-insert-local-user-map)
457 (cons 'viper-insert-kbd-minor-mode viper-insert-kbd-map)
458 (cons 'viper-insert-global-user-minor-mode
459 viper-insert-global-user-map)
460 (cons 'viper-insert-state-modifier-minor-mode
462 (cdr (assoc major-mode
463 viper-insert-state-modifier-alist)))
464 (cdr (assoc major-mode
465 viper-insert-state-modifier-alist))
467 (cons 'viper-insert-diehard-minor-mode viper-insert-diehard-map)
468 (cons 'viper-insert-basic-minor-mode viper-insert-basic-map)
469 (cons 'viper-emacs-local-user-minor-mode
470 viper-emacs-local-user-map)
471 (cons 'viper-emacs-kbd-minor-mode viper-emacs-kbd-map)
472 (cons 'viper-emacs-global-user-minor-mode
473 viper-emacs-global-user-map)
474 (cons 'viper-emacs-state-modifier-minor-mode
477 (assoc major-mode viper-emacs-state-modifier-alist)))
479 (assoc major-mode viper-emacs-state-modifier-alist))
483 ;; This var is not local in Emacs, so we make it local. It must be local
484 ;; because although the stack of minor modes can be the same for all buffers,
485 ;; the associated *keymaps* can be different. In Viper,
486 ;; viper-vi-local-user-map, viper-insert-local-user-map, and others can have
487 ;; different keymaps for different buffers. Also, the keymaps associated
488 ;; with viper-vi/insert-state-modifier-minor-mode can be different.
489 ;; ***This is needed only in case emulation-mode-map-alists is not defined.
490 ;; In emacs with emulation-mode-map-alists, nothing needs to be done
492 (and (fboundp 'add-to-ordered-list) (boundp 'emulation-mode-map-alists))
493 (set (make-local-variable 'minor-mode-map-alist)
494 (viper-append-filter-alist
495 (append viper--intercept-key-maps viper--key-maps)
496 minor-mode-map-alist)))
501 ;; Viper mode-changing commands and utilities
503 ;; Modifies mode-line-buffer-identification.
504 (defun viper-refresh-mode-line ()
505 (set (make-local-variable 'viper-mode-string)
506 (cond ((eq viper-current-state 'emacs-state) viper-emacs-state-id)
507 ((eq viper-current-state 'vi-state) viper-vi-state-id)
508 ((eq viper-current-state 'replace-state) viper-replace-state-id)
509 ((eq viper-current-state 'insert-state) viper-insert-state-id)))
511 ;; Sets Viper mode string in global-mode-string
512 (force-mode-line-update))
515 ;; Switch from Insert state to Vi state.
516 (defun viper-exit-insert-state ()
518 (viper-change-state-to-vi))
520 (defun viper-set-mode-vars-for (state)
521 "Sets Viper minor mode variables to put Viper's state STATE in effect."
524 (setq viper-vi-minibuffer-minor-mode nil
525 viper-insert-minibuffer-minor-mode nil
526 viper-vi-intercept-minor-mode nil
527 viper-insert-intercept-minor-mode nil
529 viper-vi-local-user-minor-mode nil
530 viper-vi-kbd-minor-mode nil
531 viper-vi-global-user-minor-mode nil
532 viper-vi-state-modifier-minor-mode nil
533 viper-vi-diehard-minor-mode nil
534 viper-vi-basic-minor-mode nil
536 viper-replace-minor-mode nil
538 viper-insert-local-user-minor-mode nil
539 viper-insert-kbd-minor-mode nil
540 viper-insert-global-user-minor-mode nil
541 viper-insert-state-modifier-minor-mode nil
542 viper-insert-diehard-minor-mode nil
543 viper-insert-basic-minor-mode nil
544 viper-emacs-intercept-minor-mode t
545 viper-emacs-local-user-minor-mode t
546 viper-emacs-kbd-minor-mode (not (viper-is-in-minibuffer))
547 viper-emacs-global-user-minor-mode t
548 viper-emacs-state-modifier-minor-mode t
552 (if (eq state 'vi-state) ; adjust for vi-state
554 viper-vi-intercept-minor-mode t
555 viper-vi-minibuffer-minor-mode (viper-is-in-minibuffer)
556 viper-vi-local-user-minor-mode t
557 viper-vi-kbd-minor-mode (not (viper-is-in-minibuffer))
558 viper-vi-global-user-minor-mode t
559 viper-vi-state-modifier-minor-mode t
560 ;; don't let the diehard keymap block command completion
561 ;; and other things in the minibuffer
562 viper-vi-diehard-minor-mode (not
563 (or viper-want-emacs-keys-in-vi
564 (viper-is-in-minibuffer)))
565 viper-vi-basic-minor-mode t
566 viper-emacs-intercept-minor-mode nil
567 viper-emacs-local-user-minor-mode nil
568 viper-emacs-kbd-minor-mode nil
569 viper-emacs-global-user-minor-mode nil
570 viper-emacs-state-modifier-minor-mode nil
573 ;; Insert and Replace states
574 (if (member state '(insert-state replace-state))
576 viper-insert-intercept-minor-mode t
577 viper-replace-minor-mode (eq state 'replace-state)
578 viper-insert-minibuffer-minor-mode (viper-is-in-minibuffer)
579 viper-insert-local-user-minor-mode t
580 viper-insert-kbd-minor-mode (not (viper-is-in-minibuffer))
581 viper-insert-global-user-minor-mode t
582 viper-insert-state-modifier-minor-mode t
583 ;; don't let the diehard keymap block command completion
584 ;; and other things in the minibuffer
585 viper-insert-diehard-minor-mode (not
587 viper-want-emacs-keys-in-insert
588 (viper-is-in-minibuffer)))
589 viper-insert-basic-minor-mode t
590 viper-emacs-intercept-minor-mode nil
591 viper-emacs-local-user-minor-mode nil
592 viper-emacs-kbd-minor-mode nil
593 viper-emacs-global-user-minor-mode nil
594 viper-emacs-state-modifier-minor-mode nil
598 (if (viper-has-face-support-p)
599 (setq viper-minibuffer-current-face
600 (cond ((eq state 'emacs-state) viper-minibuffer-emacs-face)
601 ((eq state 'vi-state) viper-minibuffer-vi-face)
602 ((memq state '(insert-state replace-state))
603 viper-minibuffer-insert-face))))
605 (if (viper-is-in-minibuffer)
606 (viper-set-minibuffer-overlay))
609 ;; This also takes care of the annoying incomplete lines in files.
610 ;; Also, this fixes `undo' to work vi-style for complex commands.
611 (defun viper-change-state-to-vi ()
612 "Change Viper state to Vi."
614 (if (and viper-first-time (not (viper-is-in-minibuffer)))
616 (if overwrite-mode (overwrite-mode -1))
617 (or (viper-overlay-p viper-replace-overlay)
618 (viper-set-replace-overlay (point-min) (point-min)))
619 (viper-hide-replace-overlay)
620 (if abbrev-mode (expand-abbrev))
621 (if (and auto-fill-function (> (current-column) fill-column))
622 (funcall auto-fill-function))
623 ;; don't leave whitespace lines around
624 (if (and (memq last-command
626 viper-open-line viper-Open-line
627 viper-replace-state-exit-cmd))
628 (viper-over-whitespace-line))
629 (indent-to-left-margin))
630 (viper-add-newline-at-eob-if-necessary)
633 (if (eq viper-current-state 'emacs-state)
634 (viper-restore-cursor-color 'after-emacs-mode)
635 (viper-restore-cursor-color 'after-insert-mode))
637 (viper-change-state 'vi-state)
639 ;; Protect against user errors in hooks
640 (condition-case conds
641 (run-hooks 'viper-vi-state-hook)
643 (viper-message-conditions conds)))))
645 (defun viper-change-state-to-insert ()
646 "Change Viper state to Insert."
648 (viper-change-state 'insert-state)
650 (or (viper-overlay-p viper-replace-overlay)
651 (viper-set-replace-overlay (point-min) (point-min)))
652 (viper-hide-replace-overlay)
654 (let ((icolor (viper-frame-value viper-insert-state-cursor-color)))
655 (or (stringp (viper-get-saved-cursor-color-in-insert-mode))
656 (string= (viper-get-cursor-color) icolor)
657 (viper-save-cursor-color 'before-insert-mode))
658 (viper-change-cursor-color icolor))
660 ;; Protect against user errors in hooks
661 (condition-case conds
662 (run-hooks 'viper-insert-state-hook)
664 (viper-message-conditions conds))))
666 (defsubst viper-downgrade-to-insert ()
667 ;; Protect against user errors in hooks
668 (condition-case conds
669 (run-hooks 'viper-insert-state-hook)
671 (viper-message-conditions conds)))
672 (setq viper-current-state 'insert-state
673 viper-replace-minor-mode nil))
677 ;; Change to replace state. When the end of replacement region is reached,
678 ;; replace state changes to insert state.
679 (defun viper-change-state-to-replace (&optional non-R-cmd)
680 (viper-change-state 'replace-state)
681 ;; Run insert-state-hook
682 (condition-case conds
683 (run-hooks 'viper-insert-state-hook 'viper-replace-state-hook)
685 (viper-message-conditions conds)))
688 (viper-start-replace)
689 ;; 'R' is implemented using Emacs's overwrite-mode
690 (viper-start-R-mode))
694 (defun viper-change-state-to-emacs ()
695 "Change Viper state to Emacs."
697 (or (viper-overlay-p viper-replace-overlay)
698 (viper-set-replace-overlay (point-min) (point-min)))
699 (viper-hide-replace-overlay)
701 (let ((ecolor (viper-frame-value viper-emacs-state-cursor-color)))
703 (or (stringp (viper-get-saved-cursor-color-in-emacs-mode))
704 (string= (viper-get-cursor-color) ecolor)
705 (viper-save-cursor-color 'before-emacs-mode))
706 (viper-change-cursor-color ecolor)))
708 (viper-change-state 'emacs-state)
710 ;; Protect against user errors in hooks
711 (condition-case conds
712 (run-hooks 'viper-emacs-state-hook)
714 (viper-message-conditions conds))))
716 ;; escape to emacs mode termporarily
717 (defun viper-escape-to-emacs (arg &optional events)
718 "Escape to Emacs state from Vi state for one Emacs command.
719 ARG is used as the prefix value for the executed command. If
720 EVENTS is a list of events, which become the beginning of the command."
722 (if (viper= last-command-char ?\\)
723 (message "Switched to EMACS state for the next command..."))
724 (viper-escape-to-state arg events 'emacs-state))
726 ;; escape to Vi mode termporarily
727 (defun viper-escape-to-vi (arg)
728 "Escape from Emacs state to Vi state for one Vi 1-character command.
729 If the Vi command that the user types has a prefix argument, e.g., `d2w', then
730 Vi's prefix argument will be used. Otherwise, the prefix argument passed to
731 `viper-escape-to-vi' is used."
733 (message "Switched to VI state for the next command...")
734 (viper-escape-to-state arg nil 'vi-state))
736 ;; Escape to STATE mode for one Emacs command.
737 (defun viper-escape-to-state (arg events state)
738 ;;(let (com key prefix-arg)
740 ;; this temporarily turns off Viper's minor mode keymaps
741 (viper-set-mode-vars-for state)
742 (viper-normalize-minor-mode-map-alist)
743 (if events (viper-set-unread-command-events events))
745 ;; protect against keyboard quit and other errors
747 (let (viper-vi-kbd-minor-mode
748 viper-insert-kbd-minor-mode
749 viper-emacs-kbd-minor-mode)
753 (key-binding (setq key (viper-read-key-sequence nil))))
754 ;; In case of binding indirection--chase definitions.
755 ;; Have to do it here because we execute this command under
756 ;; different keymaps, so command-execute may not do the
758 (while (vectorp com) (setq com (key-binding com))))
760 ;; Execute command com in the original Viper state, not in state
761 ;; `state'. Otherwise, if we switch buffers while executing the
762 ;; escaped to command, Viper's mode vars will remain those of
763 ;; `state'. When we return to the orig buffer, the bindings will be
765 (viper-set-mode-vars-for viper-current-state)
767 ;; this-command, last-command-char, last-command-event
768 (setq this-command com)
769 (if (featurep 'xemacs)
770 ;; XEmacs represents key sequences as vectors
771 (setq last-command-event
772 (viper-copy-event (viper-seq-last-elt key))
773 last-command-char (event-to-character last-command-event))
774 ;; Emacs represents them as sequences (str or vec)
775 (setq last-command-event
776 (viper-copy-event (viper-seq-last-elt key))
777 last-command-char last-command-event))
780 ;; pretend that current state is the state we excaped to
781 (let ((viper-current-state state))
782 (setq prefix-arg (or prefix-arg arg))
783 (command-execute com)))
787 ;; set state in the new buffer
788 (viper-set-mode-vars-for viper-current-state))
790 ;; This is used in order to allow reading characters according to the input
791 ;; method. The character is read in emacs and inserted into the buffer.
792 ;; If an input method is in effect, this might
793 ;; cause several characters to be combined into one.
794 ;; Also takes care of the iso-accents mode
795 (defun viper-special-read-and-insert-char ()
796 (viper-set-mode-vars-for 'emacs-state)
797 (viper-normalize-minor-mode-map-alist)
798 (if viper-special-input-method
799 (viper-set-input-method t))
800 (if viper-automatic-iso-accents
801 (viper-set-iso-accents-mode t))
803 (let (viper-vi-kbd-minor-mode
804 viper-insert-kbd-minor-mode
805 viper-emacs-kbd-minor-mode
807 (cond ((and viper-special-input-method
809 (fboundp 'quail-input-method))
810 ;; (let ...) is used to restore unread-command-events to the
811 ;; original state. We don't want anything left in there after
812 ;; key translation. (Such left-overs are possible if the user
813 ;; types a regular key.)
814 (let (unread-command-events)
815 ;; The next cmd and viper-set-unread-command-events
816 ;; are intended to prevent the input method
817 ;; from swallowing ^M, ^Q and other special characters
818 (setq ch (read-char-exclusive))
819 ;; replace ^M with the newline
820 (if (eq ch ?\C-m) (setq ch ?\n))
821 ;; Make sure ^V and ^Q work as quotation chars
822 (if (memq ch '(?\C-v ?\C-q))
823 (setq ch (read-char-exclusive)))
824 (viper-set-unread-command-events ch)
825 (quail-input-method nil)
827 (if (and ch (string= quail-current-str ""))
829 (insert quail-current-str))
831 (aref quail-current-str
832 (1- (length quail-current-str)))))
834 ((and viper-special-input-method
836 (fboundp 'quail-start-translation))
837 ;; same as above but for XEmacs, which doesn't have
838 ;; quail-input-method
839 (let (unread-command-events)
840 (setq ch (read-char-exclusive))
841 ;; replace ^M with the newline
842 (if (eq ch ?\C-m) (setq ch ?\n))
843 ;; Make sure ^V and ^Q work as quotation chars
844 (if (memq ch '(?\C-v ?\C-q))
845 (setq ch (read-char-exclusive)))
846 (viper-set-unread-command-events ch)
847 (quail-start-translation nil)
849 (if (and ch (string= quail-current-str ""))
851 (insert quail-current-str))
853 (aref quail-current-str
854 (1- (length quail-current-str)))))
856 ((and (boundp 'iso-accents-mode) iso-accents-mode)
857 (setq ch (aref (read-key-sequence nil) 0))
858 ;; replace ^M with the newline
859 (if (eq ch ?\C-m) (setq ch ?\n))
860 ;; Make sure ^V and ^Q work as quotation chars
861 (if (memq ch '(?\C-v ?\C-q))
862 (setq ch (aref (read-key-sequence nil) 0)))
865 ;;(setq ch (read-char-exclusive))
866 (setq ch (aref (read-key-sequence nil) 0))
867 (if (featurep 'xemacs)
868 (setq ch (event-to-character ch)))
869 ;; replace ^M with the newline
870 (if (eq ch ?\C-m) (setq ch ?\n))
871 ;; Make sure ^V and ^Q work as quotation chars
872 (if (memq ch '(?\C-v ?\C-q))
874 ;;(setq ch (read-char-exclusive))
875 (setq ch (aref (read-key-sequence nil) 0))
876 (if (featurep 'xemacs)
877 (setq ch (event-to-character ch))))
881 (setq last-command-event
882 (viper-copy-event (if (featurep 'xemacs)
883 (character-to-event ch) ch)))
888 (viper-set-input-method nil)
889 (viper-set-iso-accents-mode nil)
890 (viper-set-mode-vars-for viper-current-state)
894 (defun viper-exec-form-in-vi (form)
895 "Execute FORM in Vi state, regardless of the Ccurrent Vi state."
896 (let ((buff (current-buffer))
898 (viper-set-mode-vars-for 'vi-state)
901 (let (viper-vi-kbd-minor-mode) ; execute without kbd macros
902 (setq result (eval form)))
906 (if (not (equal buff (current-buffer))) ; cmd switched buffer
909 (viper-set-mode-vars-for viper-current-state)))
910 (viper-set-mode-vars-for viper-current-state)
913 (defun viper-exec-form-in-emacs (form)
914 "Execute FORM in Emacs, temporarily disabling Viper's minor modes.
915 Similar to viper-escape-to-emacs, but accepts forms rather than keystrokes."
916 (let ((buff (current-buffer))
918 (viper-set-mode-vars-for 'emacs-state)
919 (setq result (eval form))
920 (if (not (equal buff (current-buffer))) ; cmd switched buffer
923 (viper-set-mode-vars-for viper-current-state)))
924 (viper-set-mode-vars-for viper-current-state)
927 ;; This executes the last kbd event in emacs mode. Is used when we want to
928 ;; interpret certain keys directly in emacs (as, for example, in comint mode).
929 (defun viper-exec-key-in-emacs (arg)
931 (viper-escape-to-emacs arg last-command-event))
934 ;; This is needed because minor modes sometimes override essential Viper
935 ;; bindings. By letting Viper know which files these modes are in, it will
936 ;; arrange to reorganize minor-mode-map-alist so that things will work right.
937 (defun viper-harness-minor-mode (load-file)
938 "Familiarize Viper with a minor mode defined in LOAD_FILE.
939 Minor modes that have their own keymaps may overshadow Viper keymaps.
940 This function is designed to make Viper aware of the packages that define
943 (viper-harness-minor-mode load-file)
945 LOAD-FILE is a name of the file where the specific minor mode is defined.
946 Suffixes such as .el or .elc should be stripped."
948 (interactive "sEnter name of the load file: ")
950 (eval-after-load load-file '(viper-normalize-minor-mode-map-alist))
952 ;; Change the default for minor-mode-map-alist each time a harnessed minor
953 ;; mode adds its own keymap to the a-list.
955 (and (fboundp 'add-to-ordered-list) (boundp 'emulation-mode-map-alists))
957 load-file '(setq-default minor-mode-map-alist minor-mode-map-alist)))
961 (defun viper-ESC (arg)
962 "Emulate ESC key in Emacs.
963 Prevents multiple escape keystrokes if viper-no-multiple-ESC is true.
964 If viper-no-multiple-ESC is 'twice double ESC would ding in vi-state.
965 Other ESC sequences are emulated via the current Emacs's major mode
966 keymap. This is more convenient on TTYs, since this won't block
967 function keys such as up,down, etc. ESC will also will also work as
968 a Meta key in this case. When viper-no-multiple-ESC is nil, ESC functions
969 as a Meta key and any number of multiple escapes is allowed."
972 (cond ((and (not viper-no-multiple-ESC) (eq viper-current-state 'vi-state))
973 (setq char (viper-read-char-exclusive))
974 (viper-escape-to-emacs arg (list ?\e char) ))
975 ((and (eq viper-no-multiple-ESC 'twice)
976 (eq viper-current-state 'vi-state))
977 (setq char (viper-read-char-exclusive))
978 (if (= char (string-to-char viper-ESC-key))
980 (viper-escape-to-emacs arg (list ?\e char) )))
984 (defun viper-alternate-Meta-key (arg)
985 "Simulate Emacs Meta key."
987 (sit-for 1) (message "ESC-")
988 (viper-escape-to-emacs arg '(?\e)))
990 (defun viper-toggle-key-action ()
991 "Action bound to `viper-toggle-key'."
993 (if (and (< viper-expert-level 2) (equal viper-toggle-key "\C-z"))
994 (if (viper-window-display-p)
997 (viper-change-state-to-emacs)))
1000 ;; Intercept ESC sequences on dumb terminals.
1001 ;; Based on the idea contributed by Marcelino Veiga Tuimil <mveiga@dit.upm.es>
1003 ;; Check if last key was ESC and if so try to reread it as a function key.
1004 ;; But only if there are characters to read during a very short time.
1005 ;; Returns the last event, if any.
1006 (defun viper-envelop-ESC-key ()
1007 (let ((event last-input-event)
1010 (if (viper-ESC-event-p event)
1012 ;; Some versions of Emacs (eg., 22.50.8 have a bug, which makes even
1013 ;; a single ESC into ;; a fast keyseq. To guard against this, we
1014 ;; added a check if there are other events as well. Keep the next
1015 ;; line for the next time the bug reappears, so that will remember to
1017 ;;(if (and (viper-fast-keysequence-p) unread-command-events)
1018 (if (viper-fast-keysequence-p) ;; for Emacsen without the above bug
1020 (let (minor-mode-map-alist emulation-mode-map-alists)
1021 (viper-set-unread-command-events event)
1022 (setq keyseq (read-key-sequence nil 'continue-echo))
1024 ;; If keyseq translates into something that still has ESC
1025 ;; at the beginning, separate ESC from the rest of the seq.
1026 ;; In XEmacs we check for events that are keypress meta-key
1027 ;; and convert them into [escape key]
1029 ;; This is needed for the following reason:
1030 ;; If ESC is the first symbol, we interpret it as if the
1031 ;; user typed ESC and then quickly some other symbols.
1032 ;; If ESC is not the first one, then the key sequence
1033 ;; entered was apparently translated into a function key or
1034 ;; something (e.g., one may have
1035 ;; (define-key function-key-map "\e[192z" [f11])
1036 ;; which would translate the escape-sequence generated by
1037 ;; f11 in an xterm window into the symbolic key f11.
1039 ;; If `first-key' is not an ESC event, we make it into the
1040 ;; last-command-event in order to pretend that this key was
1041 ;; pressed. This is needed to allow arrow keys to be bound to
1042 ;; macros. Otherwise, viper-exec-mapped-kbd-macro will think
1043 ;; that the last event was ESC and so it'll execute whatever is
1044 ;; bound to ESC. (Viper macros can't be bound to
1046 (let* ((first-key (elt keyseq 0))
1047 (key-mod (event-modifiers first-key)))
1048 (cond ((and (viper-ESC-event-p first-key)
1049 (not viper-translate-all-ESC-keysequences))
1050 ;; put keys following ESC on the unread list
1051 ;; and return ESC as the key-sequence
1052 (viper-set-unread-command-events (viper-subseq keyseq 1))
1053 (setq last-input-event event
1054 keyseq (if (featurep 'emacs)
1056 (vector (character-to-event ?\e)))))
1057 ((and (featurep 'xemacs)
1058 (key-press-event-p first-key)
1059 (equal '(meta) key-mod))
1060 (viper-set-unread-command-events
1062 (character-to-event (event-key first-key)))
1063 (viper-subseq keyseq 1)))
1064 (setq last-input-event event
1065 keyseq (vector (character-to-event ?\e))))
1067 (setq last-command-event
1068 (viper-copy-event first-key)))
1072 ;; this is escape event with nothing after it
1073 ;; put in unread-command-event and then re-read
1074 (viper-set-unread-command-events event)
1075 (setq keyseq (read-key-sequence nil))
1077 ;; not an escape event
1078 (setq keyseq (vector event)))
1083 ;; Listen to ESC key.
1084 ;; If a sequence of keys starting with ESC is issued with very short delays,
1085 ;; interpret these keys in Emacs mode, so ESC won't be interpreted as a Vi key.
1086 (defun viper-intercept-ESC-key ()
1087 "Function that implements ESC key in Viper emulation of Vi."
1089 (let ((cmd (or (key-binding (viper-envelop-ESC-key))
1090 '(lambda () (interactive) (error "Viper bell")))))
1092 ;; call the actual function to execute ESC (if no other symbols followed)
1093 ;; or the key bound to the ESC sequence (if the sequence was issued
1094 ;; with very short delay between characters).
1095 (if (eq cmd 'viper-intercept-ESC-key)
1097 (cond ((eq viper-current-state 'vi-state)
1099 ((eq viper-current-state 'insert-state)
1100 'viper-exit-insert-state)
1101 ((eq viper-current-state 'replace-state)
1102 'viper-replace-state-exit-cmd)
1103 (t 'viper-change-state-to-vi)
1105 (call-interactively cmd)))
1110 ;; prefix argument for Vi mode
1112 ;; In Vi mode, prefix argument is a dotted pair (NUM . COM) where NUM
1113 ;; represents the numeric value of the prefix argument and COM represents
1114 ;; command prefix such as "c", "d", "m" and "y".
1116 ;; Get value part of prefix-argument ARG.
1117 (defsubst viper-p-val (arg)
1118 (cond ((null arg) 1)
1120 (if (or (null (car arg)) (equal (car arg) '(nil)))
1124 ;; Get raw value part of prefix-argument ARG.
1125 (defsubst viper-P-val (arg)
1126 (cond ((consp arg) (car arg))
1129 ;; Get com part of prefix-argument ARG.
1130 (defsubst viper-getcom (arg)
1131 (cond ((null arg) nil)
1132 ((consp arg) (cdr arg))
1135 ;; Get com part of prefix-argument ARG and modify it.
1136 (defun viper-getCom (arg)
1137 (let ((com (viper-getcom arg)))
1138 (cond ((viper= com ?c) ?c)
1139 ;; Previously, ?c was being converted to ?C, but this prevented
1140 ;; multiline replace regions.
1141 ;;((viper= com ?c) ?C)
1142 ((viper= com ?d) ?D)
1143 ((viper= com ?y) ?Y)
1147 ;; Compute numeric prefix arg value.
1148 ;; Invoked by EVENT-CHAR. COM is the command part obtained so far.
1149 (defun viper-prefix-arg-value (event-char com)
1150 (let ((viper-intermediate-command 'viper-digit-argument)
1152 ;; read while number
1153 (while (and (viper-characterp event-char)
1154 (>= event-char ?0) (<= event-char ?9))
1155 (setq value (+ (* (if (integerp value) value 0) 10) (- event-char ?0)))
1156 (setq event-char (viper-read-event-convert-to-char)))
1158 (setq prefix-arg value)
1159 (if com (setq prefix-arg (cons prefix-arg com)))
1160 (while (eq event-char ?U)
1161 (viper-describe-arg prefix-arg)
1162 (setq event-char (viper-read-event-convert-to-char)))
1164 (if (or com (and (not (eq viper-current-state 'vi-state))
1165 ;; make sure it is a Vi command
1166 (viper-characterp event-char)
1167 (viper-vi-command-p event-char)
1169 ;; If appears to be one of the vi commands,
1170 ;; then execute it with funcall and clear prefix-arg in order to not
1171 ;; confuse subsequent commands
1173 ;; last-command-char is the char we want emacs to think was typed
1174 ;; last. If com is not nil, the viper-digit-argument command was
1175 ;; called from within viper-prefix-arg command, such as `d', `w',
1176 ;; etc., i.e., the user typed, say, d2. In this case, `com' would be
1177 ;; `d', `w', etc. If viper-digit-argument was invoked by
1178 ;; viper-escape-to-vi (which is indicated by the fact that the
1179 ;; current state is not vi-state), then `event-char' represents the
1180 ;; vi command to be executed (e.g., `d', `w', etc). Again,
1181 ;; last-command-char must make emacs believe that this is the command
1183 (cond ((eq event-char 'return) (setq event-char ?\C-m))
1184 ((eq event-char 'delete) (setq event-char ?\C-?))
1185 ((eq event-char 'backspace) (setq event-char ?\C-h))
1186 ((eq event-char 'space) (setq event-char ?\ )))
1187 (setq last-command-char (or com event-char))
1188 (setq func (viper-exec-form-in-vi
1189 `(key-binding (char-to-string ,event-char))))
1190 (funcall func prefix-arg)
1191 (setq prefix-arg nil))
1192 ;; some other command -- let emacs do it in its own way
1193 (viper-set-unread-command-events event-char))
1197 ;; Vi operator as prefix argument."
1198 (defun viper-prefix-arg-com (char value com)
1203 (viper-memq-char char
1204 (list ?c ?d ?y ?! ?< ?> ?= ?# ?r ?R ?\"
1205 viper-buffer-search-char)))
1207 ;; this means that we already have a command character, so we
1208 ;; construct a com list and exit while. however, if char is "
1211 ;; new com is (CHAR . OLDCOM)
1212 (if (viper-memq-char char '(?# ?\")) (error "Viper bell"))
1213 (setq com (cons char com))
1215 ;; If com is nil we set com as char, and read more. Again, if char is
1216 ;; ", we read the name of register and store it in viper-use-register.
1217 ;; if char is !, =, or #, a complete com is formed so we exit the while
1219 (cond ((viper-memq-char char '(?! ?=))
1221 (setq char (read-char))
1224 ;; read a char and encode it as com
1225 (setq com (+ 128 (read-char)))
1226 (setq char (read-char)))
1228 (let ((reg (read-char)))
1229 (if (viper-valid-register reg)
1230 (setq viper-use-register reg)
1231 (error "Viper bell"))
1232 (setq char (read-char))))
1235 (setq char (read-char))))))
1238 ;; `com' is a single char, so we construct the command argument
1239 ;; and if `char' is `?', we describe the arg; otherwise
1240 ;; we prepare the command that will be executed at the end.
1242 (setq cmd-info (cons value com))
1243 (while (viper= char ?U)
1244 (viper-describe-arg cmd-info)
1245 (setq char (read-char)))
1246 ;; `char' is a movement cmd, a digit arg cmd, or a register cmd---so
1247 ;; we execute it at the very end
1248 (or (viper-movement-command-p char)
1249 (viper-digit-command-p char)
1250 (viper-regsuffix-command-p char)
1251 (viper= char ?!) ; bang command
1252 (viper= char ?g) ; the gg command (like G0)
1253 (error "Viper bell"))
1254 (setq cmd-to-exec-at-end
1255 (viper-exec-form-in-vi
1256 `(key-binding (char-to-string ,char)))))
1258 ;; as com is non-nil, this means that we have a command to execute
1259 (if (viper-memq-char (car com) '(?r ?R))
1260 ;; execute apropriate region command.
1261 (let ((char (car com)) (com (cdr com)))
1262 (setq prefix-arg (cons value com))
1263 (if (viper= char ?r)
1264 (viper-region prefix-arg)
1265 (viper-Region prefix-arg))
1267 (setq prefix-arg nil))
1268 ;; otherwise, reset prefix arg and call appropriate command
1269 (setq value (if (null value) 1 value))
1270 (setq prefix-arg nil)
1272 ;; If we change ?C to ?c here, then cc will enter replacement mode
1273 ;; rather than deleting lines. However, it will affect 1 less line
1274 ;; than normal. We decided to not use replacement mode here and
1275 ;; follow Vi, since replacement mode on n full lines can be achieved
1277 ((equal com '(?c . ?c)) (viper-line (cons value ?C)))
1278 ((equal com '(?d . ?d)) (viper-line (cons value ?D)))
1279 ((equal com '(?d . ?y)) (viper-yank-defun))
1280 ((equal com '(?y . ?y)) (viper-line (cons value ?Y)))
1281 ((equal com '(?< . ?<)) (viper-line (cons value ?<)))
1282 ((equal com '(?> . ?>)) (viper-line (cons value ?>)))
1283 ((equal com '(?! . ?!)) (viper-line (cons value ?!)))
1284 ((equal com '(?= . ?=)) (viper-line (cons value ?=)))
1286 ((equal (car com) ?g) (viper-goto-line 0))
1287 (t (error "Viper bell")))))
1289 (if cmd-to-exec-at-end
1291 (setq last-command-char char)
1292 (setq last-command-event
1294 (if (featurep 'xemacs) (character-to-event char) char)))
1296 (funcall cmd-to-exec-at-end cmd-info)
1298 (error "%s" (error-message-string err))))))
1301 (defun viper-describe-arg (arg)
1303 (setq val (viper-P-val arg)
1304 com (viper-getcom arg))
1307 (message "Value is nil, and command is nil")
1308 (message "Value is nil, and command is `%c'" com))
1310 (message "Value is `%d', and command is nil" val)
1311 (message "Value is `%d', and command is `%c'" val com)))))
1313 (defun viper-digit-argument (arg)
1314 "Begin numeric argument for the next command."
1316 (viper-leave-region-active)
1317 (viper-prefix-arg-value
1318 last-command-char (if (consp arg) (cdr arg) nil)))
1320 (defun viper-command-argument (arg)
1321 "Accept a motion command as an argument."
1323 (let ((viper-intermediate-command 'viper-command-argument))
1325 (viper-prefix-arg-com
1327 (cond ((null arg) nil)
1328 ((consp arg) (car arg))
1329 ((integerp arg) arg)
1330 (t (error viper-InvalidCommandArgument)))
1331 (cond ((null arg) nil)
1332 ((consp arg) (cdr arg))
1333 ((integerp arg) nil)
1334 (t (error viper-InvalidCommandArgument))))
1335 (quit (setq viper-use-register nil)
1336 (signal 'quit nil)))
1337 (viper-deactivate-mark)))
1340 ;; repeat last destructive command
1342 ;; Append region to text in register REG.
1343 ;; START and END are buffer positions indicating what to append.
1344 (defsubst viper-append-to-register (reg start end)
1345 (set-register reg (concat (if (stringp (get-register reg))
1346 (get-register reg) "")
1347 (buffer-substring start end))))
1349 ;; Saves last inserted text for possible use by viper-repeat command.
1350 (defun viper-save-last-insertion (beg end)
1352 (setq viper-last-insertion (buffer-substring beg end))
1354 ;; beg or end marker are somehow screwed up
1355 (setq viper-last-insertion nil)))
1356 (setq viper-last-insertion (buffer-substring beg end))
1357 (or (< (length viper-d-com) 5)
1358 (setcar (nthcdr 4 viper-d-com) viper-last-insertion))
1359 (or (null viper-command-ring)
1360 (ring-empty-p viper-command-ring)
1362 (setcar (nthcdr 4 (viper-current-ring-item viper-command-ring))
1363 viper-last-insertion)
1364 ;; del most recent elt, if identical to the second most-recent
1365 (viper-cleanup-ring viper-command-ring)))
1368 (defsubst viper-yank-last-insertion ()
1369 "Inserts the text saved by the previous viper-save-last-insertion command."
1371 (insert viper-last-insertion)
1375 ;; define functions to be executed
1377 ;; invoked by the `C' command
1378 (defun viper-exec-change (m-com com)
1379 (or (and (markerp viper-com-point) (marker-position viper-com-point))
1380 (set-marker viper-com-point (point) (current-buffer)))
1381 ;; handle C cmd at the eol and at eob.
1382 (if (or (and (eolp) (= viper-com-point (point)))
1383 (= viper-com-point (point-max)))
1385 (insert " ")(backward-char 1)))
1386 (if (= viper-com-point (point))
1387 (viper-forward-char-carefully))
1388 (set-mark viper-com-point)
1389 (if (eq m-com 'viper-next-line-at-bol)
1390 (viper-enlarge-region (mark t) (point)))
1391 (if (< (point) (mark t))
1392 (exchange-point-and-mark))
1393 (if (eq (preceding-char) ?\n)
1394 (viper-backward-char-carefully)) ; give back the newline
1395 (if (eq viper-intermediate-command 'viper-repeat)
1396 (viper-change-subr (mark t) (point))
1397 (viper-change (mark t) (point))
1400 ;; this is invoked by viper-substitute-line
1401 (defun viper-exec-Change (m-com com)
1403 (set-mark viper-com-point)
1404 (viper-enlarge-region (mark t) (point))
1405 (if viper-use-register
1407 (cond ((viper-valid-register viper-use-register '(letter digit))
1409 viper-use-register (mark t) (point) nil))
1410 ((viper-valid-register viper-use-register '(Letter))
1411 (viper-append-to-register
1412 (downcase viper-use-register) (mark t) (point)))
1413 (t (setq viper-use-register nil)
1414 (error viper-InvalidRegister viper-use-register)))
1415 (setq viper-use-register nil)))
1416 (delete-region (mark t) (point)))
1418 (if (eq viper-intermediate-command 'viper-repeat)
1419 (viper-yank-last-insertion)
1420 (viper-change-state-to-insert)
1423 (defun viper-exec-delete (m-com com)
1424 (or (and (markerp viper-com-point) (marker-position viper-com-point))
1425 (set-marker viper-com-point (point) (current-buffer)))
1426 (let (chars-deleted)
1427 (if viper-use-register
1429 (cond ((viper-valid-register viper-use-register '(letter digit))
1431 viper-use-register viper-com-point (point) nil))
1432 ((viper-valid-register viper-use-register '(Letter))
1433 (viper-append-to-register
1434 (downcase viper-use-register) viper-com-point (point)))
1435 (t (setq viper-use-register nil)
1436 (error viper-InvalidRegister viper-use-register)))
1437 (setq viper-use-register nil)))
1439 (if (eq last-command 'd-command) 'kill-region nil))
1440 (setq chars-deleted (abs (- (point) viper-com-point)))
1441 (if (> chars-deleted viper-change-notification-threshold)
1442 (unless (viper-is-in-minibuffer)
1443 (message "Deleted %d characters" chars-deleted)))
1444 (kill-region viper-com-point (point))
1445 (setq this-command 'd-command)
1446 (if viper-ex-style-motion
1447 (if (and (eolp) (not (bolp))) (backward-char 1)))))
1449 (defun viper-exec-Delete (m-com com)
1451 (set-mark viper-com-point)
1452 (viper-enlarge-region (mark t) (point))
1453 (let (lines-deleted)
1454 (if viper-use-register
1456 (cond ((viper-valid-register viper-use-register '(letter digit))
1458 viper-use-register (mark t) (point) nil))
1459 ((viper-valid-register viper-use-register '(Letter))
1460 (viper-append-to-register
1461 (downcase viper-use-register) (mark t) (point)))
1462 (t (setq viper-use-register nil)
1463 (error viper-InvalidRegister viper-use-register)))
1464 (setq viper-use-register nil)))
1466 (if (eq last-command 'D-command) 'kill-region nil))
1467 (setq lines-deleted (count-lines (point) viper-com-point))
1468 (if (> lines-deleted viper-change-notification-threshold)
1469 (unless (viper-is-in-minibuffer)
1470 (message "Deleted %d lines" lines-deleted)))
1471 (kill-region (mark t) (point))
1472 (if (eq m-com 'viper-line) (setq this-command 'D-command)))
1473 (back-to-indentation)))
1476 (defun viper-exec-yank (m-com com)
1477 (or (and (markerp viper-com-point) (marker-position viper-com-point))
1478 (set-marker viper-com-point (point) (current-buffer)))
1480 (if viper-use-register
1482 (cond ((viper-valid-register viper-use-register '(letter digit))
1484 viper-use-register viper-com-point (point) nil))
1485 ((viper-valid-register viper-use-register '(Letter))
1486 (viper-append-to-register
1487 (downcase viper-use-register) viper-com-point (point)))
1488 (t (setq viper-use-register nil)
1489 (error viper-InvalidRegister viper-use-register)))
1490 (setq viper-use-register nil)))
1491 (setq last-command nil)
1492 (copy-region-as-kill viper-com-point (point))
1493 (setq chars-saved (abs (- (point) viper-com-point)))
1494 (if (> chars-saved viper-change-notification-threshold)
1495 (unless (viper-is-in-minibuffer)
1496 (message "Saved %d characters" chars-saved)))
1497 (goto-char viper-com-point)))
1500 (defun viper-exec-Yank (m-com com)
1502 (set-mark viper-com-point)
1503 (viper-enlarge-region (mark t) (point))
1505 (if viper-use-register
1507 (cond ((viper-valid-register viper-use-register '(letter digit))
1509 viper-use-register (mark t) (point) nil))
1510 ((viper-valid-register viper-use-register '(Letter))
1511 (viper-append-to-register
1512 (downcase viper-use-register) (mark t) (point)))
1513 (t (setq viper-use-register nil)
1514 (error viper-InvalidRegister viper-use-register)))
1515 (setq viper-use-register nil)))
1516 (setq last-command nil)
1517 (copy-region-as-kill (mark t) (point))
1518 (setq lines-saved (count-lines (mark t) (point)))
1519 (if (> lines-saved viper-change-notification-threshold)
1520 (unless (viper-is-in-minibuffer)
1521 (message "Saved %d lines" lines-saved)))))
1522 (viper-deactivate-mark)
1523 (goto-char viper-com-point))
1525 (defun viper-exec-bang (m-com com)
1527 (set-mark viper-com-point)
1528 (viper-enlarge-region (mark t) (point))
1529 (exchange-point-and-mark)
1530 (shell-command-on-region
1533 (setq viper-last-shell-com
1534 (viper-read-string-with-history
1537 'viper-shell-history
1538 (car viper-shell-history)
1540 viper-last-shell-com)
1543 (defun viper-exec-equals (m-com com)
1545 (set-mark viper-com-point)
1546 (viper-enlarge-region (mark t) (point))
1547 (if (> (mark t) (point)) (exchange-point-and-mark))
1548 (indent-region (mark t) (point) nil)))
1550 (defun viper-exec-shift (m-com com)
1552 (set-mark viper-com-point)
1553 (viper-enlarge-region (mark t) (point))
1554 (if (> (mark t) (point)) (exchange-point-and-mark))
1555 (indent-rigidly (mark t) (point)
1558 (- viper-shift-width))))
1559 ;; return point to where it was before shift
1560 (goto-char viper-com-point))
1562 ;; this is needed because some commands fake com by setting it to ?r, which
1563 ;; denotes repeated insert command.
1564 (defsubst viper-exec-dummy (m-com com)
1567 (defun viper-exec-buffer-search (m-com com)
1568 (setq viper-s-string
1569 (regexp-quote (buffer-substring (point) viper-com-point)))
1570 (setq viper-s-forward t)
1571 (setq viper-search-history (cons viper-s-string viper-search-history))
1572 (setq viper-intermediate-command 'viper-exec-buffer-search)
1573 (viper-search viper-s-string viper-s-forward 1))
1575 (defvar viper-exec-array (make-vector 128 nil))
1577 ;; Using a dispatch array allows adding functions like buffer search
1578 ;; without affecting other functions. Buffer search can now be bound
1579 ;; to any character.
1581 (aset viper-exec-array ?c 'viper-exec-change)
1582 (aset viper-exec-array ?C 'viper-exec-Change)
1583 (aset viper-exec-array ?d 'viper-exec-delete)
1584 (aset viper-exec-array ?D 'viper-exec-Delete)
1585 (aset viper-exec-array ?y 'viper-exec-yank)
1586 (aset viper-exec-array ?Y 'viper-exec-Yank)
1587 (aset viper-exec-array ?r 'viper-exec-dummy)
1588 (aset viper-exec-array ?! 'viper-exec-bang)
1589 (aset viper-exec-array ?< 'viper-exec-shift)
1590 (aset viper-exec-array ?> 'viper-exec-shift)
1591 (aset viper-exec-array ?= 'viper-exec-equals)
1595 ;; This function is called by various movement commands to execute a
1596 ;; destructive command on the region specified by the movement command. For
1597 ;; instance, if the user types cw, then the command viper-forward-word will
1598 ;; call viper-execute-com to execute viper-exec-change, which eventually will
1599 ;; call viper-change to invoke the replace mode on the region.
1601 ;; The var viper-d-com is set to (M-COM VAL COM REG INSETED-TEXT COMMAND-KEYS)
1602 ;; via a call to viper-set-destructive-command, for later use by viper-repeat.
1603 (defun viper-execute-com (m-com val com)
1604 (let ((reg viper-use-register))
1605 ;; this is the special command `#'
1607 (viper-special-prefix-com (- com 128))
1608 (let ((fn (aref viper-exec-array com)))
1610 (error "%c: %s" com viper-InvalidViCommand)
1611 (funcall fn m-com com))))
1612 (if (viper-dotable-command-p com)
1613 (viper-set-destructive-command
1614 (list m-com val com reg nil nil)))
1618 (defun viper-repeat (arg)
1619 "Re-execute last destructive command.
1620 Use the info in viper-d-com, which has the form
1621 \(com val ch reg inserted-text command-keys\),
1622 where `com' is the command to be re-executed, `val' is the
1623 argument to `com', `ch' is a flag for repeat, and `reg' is optional;
1624 if it exists, it is the name of the register for `com'.
1625 If the prefix argument, ARG, is non-nil, it is used instead of `val'."
1627 (let ((save-point (point)) ; save point before repeating prev cmd
1628 ;; Pass along that we are repeating a destructive command
1629 ;; This tells viper-set-destructive-command not to update
1630 ;; viper-command-ring
1631 (viper-intermediate-command 'viper-repeat))
1632 (if (eq last-command 'viper-undo)
1633 ;; if the last command was viper-undo, then undo-more
1635 ;; otherwise execute the command stored in viper-d-com. if arg is
1636 ;; non-nil its prefix value is used as new prefix value for the command.
1637 (let ((m-com (car viper-d-com))
1638 (val (viper-P-val arg))
1639 (com (nth 2 viper-d-com))
1640 (reg (nth 3 viper-d-com)))
1641 (if (null val) (setq val (nth 1 viper-d-com)))
1642 (if (null m-com) (error "No previous command to repeat"))
1643 (setq viper-use-register reg)
1644 (if (nth 4 viper-d-com) ; text inserted by command
1645 (setq viper-last-insertion (nth 4 viper-d-com)
1646 viper-d-char (nth 4 viper-d-com)))
1647 (funcall m-com (cons val com))
1648 (cond ((and (< save-point (point)) viper-keep-point-on-repeat)
1649 (goto-char save-point)) ; go back to before repeat.
1650 ((and (< save-point (point)) viper-ex-style-editing)
1651 (or (bolp) (backward-char 1))))
1652 (if (and (eolp) (not (bolp)))
1655 (viper-adjust-undo) ; take care of undo
1656 ;; If the prev cmd was rotating the command ring, this means that `.' has
1657 ;; just executed a command from that ring. So, push it on the ring again.
1658 ;; If we are just executing previous command , then don't push viper-d-com
1659 ;; because viper-d-com is not fully constructed in this case (its keys and
1660 ;; the inserted text may be nil). Besides, in this case, the command
1661 ;; executed by `.' is already on the ring.
1662 (if (eq last-command 'viper-display-current-destructive-command)
1663 (viper-push-onto-ring viper-d-com 'viper-command-ring))
1664 (viper-deactivate-mark)
1667 (defun viper-repeat-from-history ()
1668 "Repeat a destructive command from history.
1669 Doesn't change viper-command-ring in any way, so `.' will work as before
1670 executing this command.
1671 This command is supposed to be bound to a two-character Vi macro where
1672 the second character is a digit 0 to 9. The digit indicates which
1673 history command to execute. `<char>0' is equivalent to `.', `<char>1'
1674 invokes the command before that, etc."
1676 (let* ((viper-intermediate-command 'repeating-display-destructive-command)
1677 (idx (cond (viper-this-kbd-macro
1679 (symbol-name (elt viper-this-kbd-macro 1))))
1682 (viper-d-com viper-d-com))
1684 (or (and (numberp num) (<= 0 num) (<= num 9))
1689 "`viper-repeat-from-history' must be invoked as a Vi macro bound to `<key><digit>'")))
1691 (setq viper-d-com (viper-special-ring-rotate1 viper-command-ring -1))
1692 (setq num (1- num)))
1695 (viper-special-ring-rotate1 viper-command-ring 1)
1696 (setq num (1+ num)))
1700 ;; The hash-command. It is invoked interactively by the key sequence #<char>.
1701 ;; The chars that can follow `#' are determined by viper-hash-command-p
1702 (defun viper-special-prefix-com (char)
1703 (cond ((viper= char ?c)
1704 (downcase-region (min viper-com-point (point))
1705 (max viper-com-point (point))))
1707 (upcase-region (min viper-com-point (point))
1708 (max viper-com-point (point))))
1710 (push-mark viper-com-point t)
1711 ;; execute the last emacs kbd macro on each line of the region
1712 (viper-global-execute))
1714 (push-mark viper-com-point t)
1715 (viper-quote-region))
1717 (funcall viper-spell-function viper-com-point (point)))
1718 (t (error "#%c: %s" char viper-InvalidViCommand))))
1723 ;; hook used inside undo
1724 (defvar viper-undo-functions nil)
1726 ;; Runs viper-before-change-functions inside before-change-functions
1727 (defun viper-undo-sentinel (beg end length)
1728 (run-hook-with-args 'viper-undo-functions beg end length))
1730 (add-hook 'after-change-functions 'viper-undo-sentinel)
1732 ;; Hook used in viper-undo
1733 (defun viper-after-change-undo-hook (beg end len)
1734 (if (and (boundp 'undo-in-progress) undo-in-progress)
1735 (setq undo-beg-posn beg
1736 undo-end-posn (or end beg))
1737 ;; some other hooks may be changing various text properties in
1738 ;; the buffer in response to 'undo'; so remove this hook to avoid
1739 ;; its repeated invocation
1740 (remove-hook 'viper-undo-functions 'viper-after-change-undo-hook 'local)
1743 (defun viper-undo ()
1744 "Undo previous change."
1747 (let ((modified (buffer-modified-p))
1748 (before-undo-pt (point-marker))
1749 undo-beg-posn undo-end-posn)
1751 ;; the viper-after-change-undo-hook removes itself after the 1st invocation
1752 (add-hook 'viper-undo-functions 'viper-after-change-undo-hook nil 'local)
1756 ;;(setq undo-beg-posn (or undo-beg-posn (point))
1757 ;; undo-end-posn (or undo-end-posn (point)))
1758 ;;(setq undo-beg-posn (or undo-beg-posn before-undo-pt)
1759 ;; undo-end-posn (or undo-end-posn undo-beg-posn))
1761 (if (and undo-beg-posn undo-end-posn)
1763 (goto-char undo-beg-posn)
1765 (if (and viper-keep-point-on-undo
1766 (pos-visible-in-window-p before-undo-pt))
1768 (push-mark (point-marker) t)
1769 (viper-sit-for-short 300)
1770 (goto-char undo-end-posn)
1771 (viper-sit-for-short 300)
1772 (if (pos-visible-in-window-p undo-beg-posn)
1773 (goto-char before-undo-pt)
1774 (goto-char undo-beg-posn)))
1775 (push-mark before-undo-pt t))
1778 (if (and (eolp) (not (bolp))) (backward-char 1))
1780 (setq this-command 'viper-undo))
1782 ;; Continue undoing previous changes.
1783 (defun viper-undo-more ()
1784 (message "undo more!")
1788 (message "No further undo information in this buffer")))
1789 (if (and (eolp) (not (bolp))) (backward-char 1))
1790 (setq this-command 'viper-undo))
1792 ;; The following two functions are used to set up undo properly.
1793 ;; In VI, unlike Emacs, if you open a line, say, and add a bunch of lines,
1794 ;; they are undone all at once.
1795 (defun viper-adjust-undo ()
1796 (if viper-undo-needs-adjustment
1797 (let ((inhibit-quit t)
1799 (setq viper-undo-needs-adjustment nil)
1800 (if (listp buffer-undo-list)
1801 (if (setq tmp (memq viper-buffer-undo-list-mark buffer-undo-list))
1803 (setq tmp2 (cdr tmp)) ; the part after mark
1805 ;; cut tail from buffer-undo-list temporarily by direct
1806 ;; manipulation with pointers in buffer-undo-list
1809 (setq buffer-undo-list (delq nil buffer-undo-list))
1810 (setq buffer-undo-list
1811 (delq viper-buffer-undo-list-mark buffer-undo-list))
1812 ;; restore tail of buffer-undo-list
1813 (setq buffer-undo-list (nconc buffer-undo-list tmp2)))
1814 (setq buffer-undo-list (delq nil buffer-undo-list)))))
1818 (defun viper-set-complex-command-for-undo ()
1819 (if (listp buffer-undo-list)
1820 (if (not viper-undo-needs-adjustment)
1821 (let ((inhibit-quit t))
1822 (setq buffer-undo-list
1823 (cons viper-buffer-undo-list-mark buffer-undo-list))
1824 (setq viper-undo-needs-adjustment t)))))
1827 ;;; Viper's destructive Command ring utilities
1829 (defun viper-display-current-destructive-command ()
1830 (let ((text (nth 4 viper-d-com))
1831 (keys (nth 5 viper-d-com))
1834 (setq this-command 'viper-display-current-destructive-command)
1836 (message " `.' runs %s%s"
1837 (concat "`" (viper-array-to-string keys) "'")
1838 (viper-abbreviate-string
1839 (if (featurep 'xemacs)
1840 (replace-in-string ; xemacs
1841 (cond ((characterp text) (char-to-string text))
1842 ((stringp text) text)
1848 " inserting `" "'" " ......."))
1852 ;; don't change viper-d-com if it was viper-repeat command invoked with `.'
1853 ;; or in some other way (non-interactively).
1854 (defun viper-set-destructive-command (list)
1855 (or (eq viper-intermediate-command 'viper-repeat)
1857 (setq viper-d-com list)
1858 (setcar (nthcdr 5 viper-d-com)
1859 (viper-array-to-string (if (arrayp viper-this-command-keys)
1860 viper-this-command-keys
1861 (this-command-keys))))
1862 (viper-push-onto-ring viper-d-com 'viper-command-ring)))
1863 (setq viper-this-command-keys nil))
1866 (defun viper-prev-destructive-command (next)
1867 "Find previous destructive command in the history of destructive commands.
1868 With prefix argument, find next destructive command."
1870 (let (cmd viper-intermediate-command)
1871 (if (eq last-command 'viper-display-current-destructive-command)
1872 ;; repeated search through command history
1873 (setq viper-intermediate-command
1874 'repeating-display-destructive-command)
1875 ;; first search through command history--set temp ring
1876 (setq viper-temp-command-ring (ring-copy viper-command-ring)))
1878 (viper-special-ring-rotate1 viper-temp-command-ring 1)
1879 (viper-special-ring-rotate1 viper-temp-command-ring -1)))
1882 (setq viper-d-com cmd))
1883 (viper-display-current-destructive-command)))
1886 (defun viper-next-destructive-command ()
1887 "Find next destructive command in the history of destructive commands."
1889 (viper-prev-destructive-command 'next))
1892 (defun viper-insert-prev-from-insertion-ring (arg)
1893 "Cycle through insertion ring in the direction of older insertions.
1894 Undoes previous insertion and inserts new.
1895 With prefix argument, cycles in the direction of newer elements.
1896 In minibuffer, this command executes whatever the invocation key is bound
1897 to in the global map, instead of cycling through the insertion ring."
1899 (let (viper-intermediate-command)
1900 (if (eq last-command 'viper-insert-from-insertion-ring)
1901 (progn ; repeated search through insertion history
1902 (setq viper-intermediate-command 'repeating-insertion-from-ring)
1903 (if (eq viper-current-state 'replace-state)
1905 (if viper-last-inserted-string-from-insertion-ring
1906 (backward-delete-char
1907 (length viper-last-inserted-string-from-insertion-ring))))
1909 ;;first search through insertion history
1910 (setq viper-temp-insertion-ring (ring-copy viper-insertion-ring)))
1911 (setq this-command 'viper-insert-from-insertion-ring)
1912 ;; so that things will be undone properly
1913 (setq buffer-undo-list (cons nil buffer-undo-list))
1914 (setq viper-last-inserted-string-from-insertion-ring
1915 (viper-special-ring-rotate1 viper-temp-insertion-ring (if arg 1 -1)))
1917 ;; this change of viper-intermediate-command must come after
1918 ;; viper-special-ring-rotate1, so that the ring will rotate, but before the
1920 (setq viper-intermediate-command nil)
1921 (if viper-last-inserted-string-from-insertion-ring
1922 (insert viper-last-inserted-string-from-insertion-ring))
1925 (defun viper-insert-next-from-insertion-ring ()
1926 "Cycle through insertion ring in the direction of older insertions.
1927 Undo previous insertion and inserts new."
1929 (viper-insert-prev-from-insertion-ring 'next))
1933 ;; some region utilities
1935 ;; If at the last line of buffer, add \\n before eob, if newline is missing.
1936 (defun viper-add-newline-at-eob-if-necessary ()
1939 ;; make sure all lines end with newline, unless in the minibuffer or
1940 ;; when requested otherwise (require-final-newline is nil)
1945 require-final-newline
1946 ;; add newline only if we actually edited buffer. otherwise it
1947 ;; might unintentionally modify binary buffers
1949 (not (viper-is-in-minibuffer))
1950 (not buffer-read-only))
1951 ;; text property may be read-only
1958 (defun viper-yank-defun ()
1960 (copy-region-as-kill (point) (mark t)))
1962 ;; Enlarge region between BEG and END.
1963 (defun viper-enlarge-region (beg end)
1964 (or beg (setq beg end)) ; if beg is nil, set to end
1965 (or end (setq end beg)) ; if end is nil, set to beg
1968 (progn (goto-char beg) (set-mark end))
1972 (exchange-point-and-mark)
1973 (if (or (not (eobp)) (not (bolp))) (forward-line 1))
1974 (if (not (eobp)) (beginning-of-line))
1975 (if (> beg end) (exchange-point-and-mark)))
1978 ;; Quote region by each line with a user supplied string.
1979 (defun viper-quote-region ()
1980 (let ((quote-str viper-quote-string)
1981 (donot-change-dafault t))
1983 (viper-read-string-with-history
1986 'viper-quote-region-history
1987 (cond ((string-match "tex.*-mode" (symbol-name major-mode)) "%%")
1988 ((string-match "java.*-mode" (symbol-name major-mode)) "//")
1989 ((string-match "perl.*-mode" (symbol-name major-mode)) "#")
1990 ((string-match "lisp.*-mode" (symbol-name major-mode)) ";;")
1991 ((memq major-mode '(c-mode cc-mode c++-mode)) "//")
1992 ((memq major-mode '(sh-mode shell-mode)) "#")
1993 (t (setq donot-change-dafault nil)
1995 (or donot-change-dafault
1996 (setq viper-quote-string quote-str))
1997 (viper-enlarge-region (point) (mark t))
1998 (if (> (point) (mark t)) (exchange-point-and-mark))
2002 (while (and (< (point) (mark t)) (bolp))
2007 ;; Tells whether BEG is on the same line as END.
2008 ;; If one of the args is nil, it'll return nil.
2009 (defun viper-same-line (beg end)
2010 (let ((selective-display nil)
2013 (if (and beg end (> beg end))
2018 (cond ((or (> beg (point-max)) (> end (point-max))) ; out of range
2021 ;; This 'if' is needed because Emacs treats the next empty line
2022 ;; as part of the previous line.
2023 (if (= (viper-line-pos 'start) end)
2025 (<= (+ incr (count-lines beg end)) 1))))
2029 ;; Check if the string ends with a newline.
2030 (defun viper-end-with-a-newline-p (string)
2031 (or (string= string "")
2032 (= (viper-seq-last-elt string) ?\n)))
2034 (defun viper-tmp-insert-at-eob (msg)
2035 (let ((savemax (point-max)))
2039 (goto-char savemax) (delete-region (point) (point-max))
2044 ;;; Minibuffer business
2046 (defsubst viper-set-minibuffer-style ()
2047 (add-hook 'minibuffer-setup-hook 'viper-minibuffer-setup-sentinel)
2048 (add-hook 'post-command-hook 'viper-minibuffer-post-command-hook))
2051 (defun viper-minibuffer-setup-sentinel ()
2052 (let ((hook (if viper-vi-style-in-minibuffer
2053 'viper-change-state-to-insert
2054 'viper-change-state-to-emacs)))
2055 ;; making buffer-local variables so that normal buffers won't affect the
2056 ;; minibuffer and vice versa. Otherwise, command arguments will affect
2057 ;; minibuffer ops and insertions from the minibuffer will change those in
2058 ;; the normal buffers
2059 (make-local-variable 'viper-d-com)
2060 (make-local-variable 'viper-last-insertion)
2061 (make-local-variable 'viper-command-ring)
2062 (setq viper-d-com nil
2063 viper-last-insertion nil
2064 viper-command-ring nil)
2068 ;; Thie is a temp hook that uses free variables init-message and initial.
2069 ;; A dirty feature, but it is the simplest way to have it do the right thing.
2070 ;; The INIT-MESSAGE and INITIAL vars come from the scope set by
2071 ;; viper-read-string-with-history
2072 (defun viper-minibuffer-standard-hook ()
2073 (if (stringp init-message)
2074 (viper-tmp-insert-at-eob init-message))
2075 (if (stringp initial)
2077 ;; don't wait if we have unread events or in kbd macro
2078 (or unread-command-events
2081 (if (fboundp 'minibuffer-prompt-end)
2082 (delete-region (minibuffer-prompt-end) (point-max))
2086 (defsubst viper-minibuffer-real-start ()
2087 (if (fboundp 'minibuffer-prompt-end)
2088 (minibuffer-prompt-end)
2091 (defun viper-minibuffer-post-command-hook()
2092 (when (active-minibuffer-window)
2093 (when (< (point) (viper-minibuffer-real-start))
2094 (goto-char (viper-minibuffer-real-start)))))
2097 ;; Interpret last event in the local map first; if fails, use exit-minibuffer.
2098 ;; Run viper-minibuffer-exit-hook before exiting.
2099 (defun viper-exit-minibuffer ()
2100 "Exit minibuffer Viper way."
2103 (setq command (local-key-binding (char-to-string last-command-char)))
2104 (run-hooks 'viper-minibuffer-exit-hook)
2106 (command-execute command)
2107 (exit-minibuffer))))
2110 (defcustom viper-smart-suffix-list
2111 '("" "tex" "c" "cc" "C" "java" "el" "html" "htm" "xml"
2112 "pl" "flr" "P" "p" "h" "H")
2113 "*List of suffixes that Viper tries to append to filenames ending with a `.'.
2114 This is useful when the current directory contains files with the same
2115 prefix and many different suffixes. Usually, only one of the suffixes
2116 represents an editable file. However, file completion will stop at the `.'
2117 The smart suffix feature lets you hit RET in such a case, and Viper will
2118 select the appropriate suffix.
2120 Suffixes are tried in the order given and the first suffix for which a
2121 corresponding file exists is selected. If no file exists for any of the
2122 suffixes, the user is asked to confirm.
2124 To turn this feature off, set this variable to nil."
2125 :type '(repeat string)
2129 ;; Try to add a suitable suffix to files whose name ends with a `.'
2130 ;; Useful when the user hits RET on a non-completed file name.
2131 ;; Used as a minibuffer exit hook in read-file-name
2132 (defun viper-file-add-suffix ()
2134 (len (length viper-smart-suffix-list))
2135 (file (buffer-substring-no-properties
2136 (viper-minibuffer-real-start) (point-max)))
2138 (goto-char (point-max))
2139 (if (and viper-smart-suffix-list (string-match "\\.$" file))
2141 (while (and (not found) (< count len))
2142 (setq suff (nth count viper-smart-suffix-list)
2145 (format "%s%s" (substitute-in-file-name file) suff))
2152 (viper-tmp-insert-at-eob " [Please complete file name]")
2154 (while (not (memq cmd
2155 '(exit-minibuffer viper-exit-minibuffer)))
2157 (key-binding (setq key (read-key-sequence nil))))
2158 (cond ((eq cmd 'self-insert-command)
2159 (if (featurep 'xemacs)
2160 (insert (events-to-keys key)) ; xemacs
2161 (insert key) ; emacs
2163 ((memq cmd '(exit-minibuffer viper-exit-minibuffer))
2165 (t (command-execute cmd)))
2170 (defun viper-minibuffer-trim-tail ()
2171 "Delete junk at the end of the first line of the minibuffer input.
2172 Remove this function from `viper-minibuffer-exit-hook', if this causes
2174 (if (viper-is-in-minibuffer)
2175 (let ((inhibit-field-text-motion t))
2176 (goto-char (viper-minibuffer-real-start))
2178 (delete-region (point) (point-max)))))
2181 ;;; Reading string with history
2183 (defun viper-read-string-with-history (prompt &optional initial
2184 history-var default keymap
2186 ;; Read string, prompting with PROMPT and inserting the INITIAL
2187 ;; value. Uses HISTORY-VAR. DEFAULT is the default value to accept if the
2188 ;; input is an empty string.
2189 ;; Default value is displayed until the user types something in the
2191 ;; KEYMAP is used, if given, instead of minibuffer-local-map.
2192 ;; INIT-MESSAGE is the message temporarily displayed after entering the
2194 (let ((minibuffer-setup-hook
2195 ;; stolen from add-hook
2197 (if (boundp 'minibuffer-setup-hook)
2198 minibuffer-setup-hook
2201 'viper-minibuffer-standard-hook
2202 (if (or (not (listp old)) (eq (car old) 'lambda))
2208 (setq keymap (or keymap minibuffer-local-map)
2209 initial (or initial "")
2210 temp-msg (if default
2211 (format "(default %s) " default)
2214 (setq viper-incomplete-ex-cmd nil)
2215 (setq val (read-from-minibuffer prompt
2216 (concat temp-msg initial val padding)
2217 keymap nil history-var))
2218 (setq minibuffer-setup-hook nil
2219 padding (viper-array-to-string (this-command-keys))
2221 ;; the following tries to be smart about what to put in history
2222 (if (not (string= val (car (eval history-var))))
2223 (set history-var (cons val (eval history-var))))
2224 (if (or (string= (nth 0 (eval history-var)) (nth 1 (eval history-var)))
2225 (string= (nth 0 (eval history-var)) ""))
2226 (set history-var (cdr (eval history-var))))
2227 ;; If the user enters nothing but the prev cmd wasn't viper-ex,
2228 ;; viper-command-argument, or `! shell-command', this probably means
2229 ;; that the user typed something then erased. Return "" in this case, not
2230 ;; the default---the default is too confusing in this case.
2231 (cond ((and (string= val "")
2232 (not (string= prompt "!")) ; was a `! shell-command'
2233 (not (memq last-command
2235 viper-command-argument
2239 ((string= val "") (or default ""))
2245 ;; insertion commands
2247 ;; Called when state changes from Insert Vi command mode.
2248 ;; Repeats the insertion command if Insert state was entered with prefix
2250 (defun viper-repeat-insert-command ()
2251 (let ((i-com (car viper-d-com))
2252 (val (nth 1 viper-d-com))
2253 (char (nth 2 viper-d-com)))
2254 (if (and val (> val 1)) ; first check that val is non-nil
2256 (setq viper-d-com (list i-com (1- val) ?r nil nil nil))
2258 (setq viper-d-com (list i-com val char nil nil nil))
2261 (defun viper-insert (arg)
2262 "Insert before point."
2264 (viper-set-complex-command-for-undo)
2265 (let ((val (viper-p-val arg))
2266 ;;(com (viper-getcom arg))
2268 (viper-set-destructive-command (list 'viper-insert val ?r nil nil nil))
2269 (if (eq viper-intermediate-command 'viper-repeat)
2270 (viper-loop val (viper-yank-last-insertion))
2271 (viper-change-state-to-insert))))
2273 (defun viper-append (arg)
2274 "Append after point."
2276 (viper-set-complex-command-for-undo)
2277 (let ((val (viper-p-val arg))
2278 ;;(com (viper-getcom arg))
2280 (viper-set-destructive-command (list 'viper-append val ?r nil nil nil))
2281 (if (not (eolp)) (forward-char))
2282 (if (eq viper-intermediate-command 'viper-repeat)
2283 (viper-loop val (viper-yank-last-insertion))
2284 (viper-change-state-to-insert))))
2286 (defun viper-Append (arg)
2287 "Append at end of line."
2289 (viper-set-complex-command-for-undo)
2290 (let ((val (viper-p-val arg))
2291 ;;(com (viper-getcom arg))
2293 (viper-set-destructive-command (list 'viper-Append val ?r nil nil nil))
2295 (if (eq viper-intermediate-command 'viper-repeat)
2296 (viper-loop val (viper-yank-last-insertion))
2297 (viper-change-state-to-insert))))
2299 (defun viper-Insert (arg)
2300 "Insert before first non-white."
2302 (viper-set-complex-command-for-undo)
2303 (let ((val (viper-p-val arg))
2304 ;;(com (viper-getcom arg))
2306 (viper-set-destructive-command (list 'viper-Insert val ?r nil nil nil))
2307 (back-to-indentation)
2308 (if (eq viper-intermediate-command 'viper-repeat)
2309 (viper-loop val (viper-yank-last-insertion))
2310 (viper-change-state-to-insert))))
2312 (defun viper-open-line (arg)
2315 (viper-set-complex-command-for-undo)
2316 (let ((val (viper-p-val arg))
2317 ;;(com (viper-getcom arg))
2319 (viper-set-destructive-command (list 'viper-open-line val ?r nil nil nil))
2320 (let ((col (current-indentation)))
2321 (if (eq viper-intermediate-command 'viper-repeat)
2325 (viper-indent-line col)
2326 (viper-yank-last-insertion))
2329 (viper-indent-line col)
2330 (viper-change-state-to-insert)))))
2332 (defun viper-Open-line (arg)
2335 (viper-set-complex-command-for-undo)
2336 (let ((val (viper-p-val arg))
2337 ;;(com (viper-getcom arg))
2339 (viper-set-destructive-command (list 'viper-Open-line val ?r nil nil nil))
2340 (let ((col (current-indentation)))
2341 (if (eq viper-intermediate-command 'viper-repeat)
2345 (viper-indent-line col)
2346 (viper-yank-last-insertion))
2349 (viper-indent-line col)
2350 (viper-change-state-to-insert)))))
2352 (defun viper-open-line-at-point (arg)
2353 "Open line at point."
2355 (viper-set-complex-command-for-undo)
2356 (let ((val (viper-p-val arg))
2357 ;;(com (viper-getcom arg))
2359 (viper-set-destructive-command
2360 (list 'viper-open-line-at-point val ?r nil nil nil))
2361 (if (eq viper-intermediate-command 'viper-repeat)
2364 (viper-yank-last-insertion))
2366 (viper-change-state-to-insert))))
2369 (defun viper-substitute (arg)
2370 "Substitute characters."
2372 (let ((val (viper-p-val arg))
2373 ;;(com (viper-getcom arg))
2377 (if (eq viper-intermediate-command 'viper-repeat)
2378 (viper-change-subr (mark t) (point))
2379 (viper-change (mark t) (point)))
2380 ;; com is set to ?r when we repeat this comand with dot
2381 (viper-set-destructive-command (list 'viper-substitute val ?r nil nil nil))
2384 ;; Command bound to S
2385 (defun viper-substitute-line (arg)
2388 (viper-set-complex-command-for-undo)
2389 (viper-line (cons arg ?C)))
2391 ;; Prepare for replace
2392 (defun viper-start-replace ()
2393 (setq viper-began-as-replace t
2394 viper-sitting-in-replace t
2395 viper-replace-chars-to-delete 0)
2397 'viper-after-change-functions 'viper-replace-mode-spy-after t 'local)
2399 'viper-before-change-functions 'viper-replace-mode-spy-before t 'local)
2400 ;; this will get added repeatedly, but no harm
2401 (add-hook 'after-change-functions 'viper-after-change-sentinel t)
2402 (add-hook 'before-change-functions 'viper-before-change-sentinel t)
2403 (viper-move-marker-locally
2404 'viper-last-posn-in-replace-region (viper-replace-start))
2406 'viper-post-command-hooks 'viper-replace-state-post-command-sentinel
2409 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel t 'local)
2410 ;; guard against a smartie who switched from R-replace to normal replace
2412 'viper-post-command-hooks 'viper-R-state-post-command-sentinel 'local)
2413 (if overwrite-mode (overwrite-mode -1))
2417 (defun viper-replace-mode-spy-before (beg end)
2418 (setq viper-replace-region-chars-deleted (viper-chars-in-region beg end))
2421 ;; Invoked as an after-change-function to calculate how many chars have to be
2422 ;; deleted. This function may be called several times within a single command,
2423 ;; if this command performs several separate buffer changes. Therefore, if
2424 ;; adds up the number of chars inserted and subtracts the number of chars
2426 (defun viper-replace-mode-spy-after (beg end length)
2427 (if (memq viper-intermediate-command
2428 '(dabbrev-expand hippie-expand repeating-insertion-from-ring))
2429 ;; Take special care of text insertion from insertion ring inside
2430 ;; replacement overlays.
2432 (setq viper-replace-chars-to-delete 0)
2433 (viper-move-marker-locally
2434 'viper-last-posn-in-replace-region (point)))
2436 (let* ((real-end (min end (viper-replace-end)))
2437 (column-shift (- (save-excursion (goto-char real-end)
2439 (save-excursion (goto-char beg)
2444 (setq chars-deleted viper-replace-region-chars-deleted))
2445 (setq viper-replace-region-chars-deleted 0)
2446 (setq viper-replace-chars-to-delete
2447 (+ viper-replace-chars-to-delete
2449 ;; if column shift is bigger, due to a TAB insertion, take
2450 ;; column-shift instead of the number of inserted chars
2451 (max (viper-chars-in-region beg real-end)
2452 ;; This test accounts for Chinese/Japanese/... chars,
2453 ;; which occupy 2 columns instead of one. If we use
2454 ;; column-shift here, we may delete two chars instead of
2455 ;; one when the user types one Chinese character.
2456 ;; Deleting two would be OK, if they were European chars,
2457 ;; but it is not OK if they are Chinese chars.
2458 ;; Since it is hard to
2459 ;; figure out which characters are being deleted in any
2460 ;; given region, we decided to treat Eastern and European
2461 ;; characters equally, even though Eastern chars may
2462 ;; occupy more columns.
2463 (if (memq this-command '(self-insert-command
2464 quoted-insert viper-insert-tab))
2467 ;; the number of deleted chars
2470 (viper-move-marker-locally
2471 'viper-last-posn-in-replace-region
2472 (max (if (> end (viper-replace-end)) (viper-replace-end) end)
2473 (or (marker-position viper-last-posn-in-replace-region)
2474 (viper-replace-start))
2480 ;; Delete stuff between viper-last-posn-in-replace-region and the end of
2481 ;; viper-replace-overlay-marker, if viper-last-posn-in-replace-region is within
2482 ;; the overlay and current point is before the end of the overlay.
2483 ;; Don't delete anything if current point is past the end of the overlay.
2484 (defun viper-finish-change ()
2486 'viper-after-change-functions 'viper-replace-mode-spy-after 'local)
2488 'viper-before-change-functions 'viper-replace-mode-spy-before 'local)
2490 'viper-post-command-hooks 'viper-replace-state-post-command-sentinel 'local)
2492 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel 'local)
2493 (viper-restore-cursor-color 'after-replace-mode)
2494 (setq viper-sitting-in-replace nil) ; just in case we'll need to know it
2496 (if (and viper-replace-overlay
2497 (viper-pos-within-region viper-last-posn-in-replace-region
2498 (viper-replace-start)
2499 (viper-replace-end))
2500 (< (point) (viper-replace-end)))
2502 viper-last-posn-in-replace-region (viper-replace-end))))
2504 (if (eq viper-current-state 'replace-state)
2505 (viper-downgrade-to-insert))
2506 ;; replace mode ended => nullify viper-last-posn-in-replace-region
2507 (viper-move-marker-locally 'viper-last-posn-in-replace-region nil)
2508 (viper-hide-replace-overlay)
2509 (viper-refresh-mode-line)
2510 (viper-put-string-on-kill-ring viper-last-replace-region)
2513 ;; Make STRING be the first element of the kill ring.
2514 (defun viper-put-string-on-kill-ring (string)
2515 (setq kill-ring (cons string kill-ring))
2516 (if (> (length kill-ring) kill-ring-max)
2517 (setcdr (nthcdr (1- kill-ring-max) kill-ring) nil))
2518 (setq kill-ring-yank-pointer kill-ring))
2520 (defun viper-finish-R-mode ()
2522 'viper-post-command-hooks 'viper-R-state-post-command-sentinel 'local)
2524 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel 'local)
2525 (viper-downgrade-to-insert))
2527 (defun viper-start-R-mode ()
2528 ;; Leave arg as 1, not t: XEmacs insists that it must be a pos number
2531 'viper-post-command-hooks 'viper-R-state-post-command-sentinel t 'local)
2533 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel t 'local)
2534 ;; guard against a smartie who switched from R-replace to normal replace
2536 'viper-post-command-hooks 'viper-replace-state-post-command-sentinel 'local)
2541 (defun viper-replace-state-exit-cmd ()
2542 "Binding for keys that cause Replace state to switch to Vi or to Insert.
2543 These keys are ESC, RET, and LineFeed"
2545 (if overwrite-mode ; if in replace mode invoked via 'R'
2546 (viper-finish-R-mode)
2547 (viper-finish-change))
2549 (if (eq this-command 'viper-intercept-ESC-key)
2550 (setq com 'viper-exit-insert-state)
2551 (viper-set-unread-command-events last-input-char)
2552 (setq com (key-binding (viper-read-key-sequence nil))))
2554 (condition-case conds
2555 (command-execute com)
2557 (viper-message-conditions conds)))
2559 (viper-hide-replace-overlay))
2562 (defun viper-replace-state-carriage-return ()
2563 "Carriage return in Viper replace state."
2565 ;; If Emacs start supporting overlay maps, as it currently supports
2566 ;; text-property maps, we could do away with viper-replace-minor-mode and
2567 ;; just have keymap attached to replace overlay. Then the "if part" of this
2568 ;; statement can be deleted.
2569 (if (or (< (point) (viper-replace-start))
2570 (> (point) (viper-replace-end)))
2571 (let (viper-replace-minor-mode com)
2572 (viper-set-unread-command-events last-input-char)
2573 (setq com (key-binding (read-key-sequence nil)))
2574 (condition-case conds
2575 (command-execute com)
2577 (viper-message-conditions conds))))
2578 (if (not viper-allow-multiline-replace-regions)
2579 (viper-replace-state-exit-cmd)
2580 (if (viper-same-line (point) (viper-replace-end))
2581 (viper-replace-state-exit-cmd)
2582 ;; delete the rest of line
2583 (delete-region (point) (viper-line-pos 'end))
2586 (if (eobp) (error "Last line in buffer")))
2587 ;; skip to the next line
2589 (back-to-indentation)
2593 ;; This is the function bound to 'R'---unlimited replace.
2594 ;; Similar to Emacs's own overwrite-mode.
2595 (defun viper-overwrite (arg)
2596 "Begin overwrite mode."
2598 (let ((val (viper-p-val arg))
2599 ;;(com (viper-getcom arg))
2601 (viper-set-destructive-command (list 'viper-overwrite val ?r nil nil nil))
2602 (if (eq viper-intermediate-command 'viper-repeat)
2604 ;; Viper saves inserted text in viper-last-insertion
2605 (setq len (length viper-last-insertion))
2606 (delete-char (min len (- (point-max) (point) 1)))
2607 (viper-loop val (viper-yank-last-insertion)))
2608 (setq last-command 'viper-overwrite)
2609 (viper-set-complex-command-for-undo)
2610 (viper-set-replace-overlay (point) (viper-line-pos 'end))
2611 (viper-change-state-to-replace)
2617 (defun viper-line (arg)
2618 (let ((val (car arg))
2620 (viper-move-marker-locally 'viper-com-point (point))
2622 (viper-next-line-carefully (1- val)))
2623 ;; the following ensures that dd, cc, D, yy will do the right thing on the
2624 ;; last line of buffer when this line has no \n.
2625 (viper-add-newline-at-eob-if-necessary)
2626 (viper-execute-com 'viper-line val com))
2627 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
2630 (defun viper-yank-line (arg)
2631 "Yank ARG lines (in Vi's sense)."
2633 (let ((val (viper-p-val arg)))
2634 (viper-line (cons val ?Y))))
2639 (defun viper-region (arg)
2640 "Execute command on a region."
2642 (let ((val (viper-P-val arg))
2643 (com (viper-getcom arg)))
2644 (viper-move-marker-locally 'viper-com-point (point))
2645 (exchange-point-and-mark)
2646 (viper-execute-com 'viper-region val com)))
2648 (defun viper-Region (arg)
2649 "Execute command on a Region."
2651 (let ((val (viper-P-val arg))
2652 (com (viper-getCom arg)))
2653 (viper-move-marker-locally 'viper-com-point (point))
2654 (exchange-point-and-mark)
2655 (viper-execute-com 'viper-Region val com)))
2657 (defun viper-replace-char (arg)
2658 "Replace the following ARG chars by the character read."
2660 (if (and (eolp) (bolp)) (error "No character to replace here"))
2661 (let ((val (viper-p-val arg))
2662 (com (viper-getcom arg)))
2663 (viper-replace-char-subr com val)
2664 (if (and (eolp) (not (bolp))) (forward-char 1))
2665 (setq viper-this-command-keys
2666 (format "%sr" (if (integerp arg) arg "")))
2667 (viper-set-destructive-command
2668 (list 'viper-replace-char val ?r nil viper-d-char nil))
2671 (defun viper-replace-char-subr (com arg)
2672 (let ((inhibit-quit t)
2674 (viper-set-complex-command-for-undo)
2675 (or (eq viper-intermediate-command 'viper-repeat)
2676 (viper-special-read-and-insert-char))
2679 (setq char (if com viper-d-char (viper-char-at-pos 'backward)))
2681 (if com (insert char))
2683 (setq viper-d-char char)
2685 (viper-loop (1- (if (> arg 0) arg (- arg)))
2694 ;; basic cursor movement. j, k, l, h commands.
2696 (defun viper-forward-char (arg)
2697 "Move point right ARG characters (left if ARG negative).
2698 On reaching end of line, stop and signal error."
2700 (viper-leave-region-active)
2701 (let ((val (viper-p-val arg))
2702 (com (viper-getcom arg)))
2703 (if com (viper-move-marker-locally 'viper-com-point (point)))
2704 (if viper-ex-style-motion
2706 ;; the boundary condition check gets weird here because
2707 ;; forward-char may be the parameter of a delete, and 'dl' works
2708 ;; just like 'x' for the last char on a line, so we have to allow
2709 ;; the forward motion before the 'viper-execute-com', but, of
2710 ;; course, 'dl' doesn't work on an empty line, so we have to
2711 ;; catch that condition before 'viper-execute-com'
2712 (if (and (eolp) (bolp)) (error "Viper bell") (forward-char val))
2713 (if com (viper-execute-com 'viper-forward-char val com))
2714 (if (eolp) (progn (backward-char 1) (error "Viper bell"))))
2716 (if com (viper-execute-com 'viper-forward-char val com)))))
2719 (defun viper-backward-char (arg)
2720 "Move point left ARG characters (right if ARG negative).
2721 On reaching beginning of line, stop and signal error."
2723 (viper-leave-region-active)
2724 (let ((val (viper-p-val arg))
2725 (com (viper-getcom arg)))
2726 (if com (viper-move-marker-locally 'viper-com-point (point)))
2727 (if viper-ex-style-motion
2729 (if (bolp) (error "Viper bell") (backward-char val))
2730 (if com (viper-execute-com 'viper-backward-char val com)))
2732 (if com (viper-execute-com 'viper-backward-char val com)))))
2735 ;; Like forward-char, but doesn't move at end of buffer.
2736 ;; Returns distance traveled
2737 ;; (positive or 0, if arg positive; negative if arg negative).
2738 (defun viper-forward-char-carefully (&optional arg)
2739 (setq arg (or arg 1))
2744 (if (< (point) pt) ; arg was negative
2745 (- (viper-chars-in-region pt (point)))
2746 (viper-chars-in-region pt (point)))))
2749 ;; Like backward-char, but doesn't move at beg of buffer.
2750 ;; Returns distance traveled
2751 ;; (negative or 0, if arg positive; positive if arg negative).
2752 (defun viper-backward-char-carefully (&optional arg)
2753 (setq arg (or arg 1))
2758 (if (> (point) pt) ; arg was negative
2759 (viper-chars-in-region pt (point))
2760 (- (viper-chars-in-region pt (point))))))
2762 (defun viper-next-line-carefully (arg)
2764 ;; do not use forward-line! need to keep column
2765 (let ((line-move-visual nil))
2766 (if (featurep 'emacs)
2767 (with-no-warnings (next-line arg))
2775 ;; Words are formed from alpha's and nonalphas - <sp>,\t\n are separators for
2776 ;; word movement. When executed with a destructive command, \n is usually left
2777 ;; untouched for the last word. Viper uses syntax table to determine what is a
2778 ;; word and what is a separator. However, \n is always a separator. Also, if
2779 ;; viper-syntax-preference is 'vi, then `_' is part of the word.
2782 (defun viper-skip-separators (forward)
2785 (viper-skip-all-separators-forward 'within-line)
2786 (if (looking-at "\n")
2789 (viper-skip-all-separators-forward 'within-line))))
2790 ;; check for eob and white space before it. move off of eob
2791 (if (and (eobp) (save-excursion
2792 (viper-backward-char-carefully)
2793 (viper-looking-at-separator)))
2794 (viper-backward-char-carefully))
2795 (viper-skip-all-separators-backward 'within-line)
2796 (viper-backward-char-carefully)
2797 (if (looking-at "\n")
2798 (viper-skip-all-separators-backward 'within-line)
2799 (or (viper-looking-at-separator) (forward-char)))))
2802 (defun viper-forward-word-kernel (val)
2804 (cond ((viper-looking-at-alpha)
2805 (viper-skip-alpha-forward "_")
2806 (viper-skip-separators t))
2807 ((viper-looking-at-separator)
2808 (viper-skip-separators t))
2809 ((not (viper-looking-at-alphasep))
2810 (viper-skip-nonalphasep-forward)
2811 (viper-skip-separators t)))
2812 (setq val (1- val))))
2814 ;; first skip non-newline separators backward, then skip \n. Then, if TWICE is
2815 ;; non-nil, skip non-\n back again, but don't overshoot the limit LIM.
2816 (defun viper-separator-skipback-special (twice lim)
2817 (let ((prev-char (viper-char-at-pos 'backward))
2818 (saved-point (point)))
2819 ;; skip non-newline separators backward
2820 (while (and (not (viper-memq-char prev-char '(nil \n)))
2822 ;; must be non-newline separator
2823 (if (eq viper-syntax-preference 'strict-vi)
2824 (viper-memq-char prev-char '(?\ ?\t))
2825 (viper-memq-char (char-syntax prev-char) '(?\ ?-))))
2826 (viper-backward-char-carefully)
2827 (setq prev-char (viper-char-at-pos 'backward)))
2829 (if (and (< lim (point)) (eq prev-char ?\n))
2831 ;; If we skipped to the next word and the prefix of this line doesn't
2832 ;; consist of separators preceded by a newline, then don't skip backwards
2834 (goto-char saved-point))
2835 (setq prev-char (viper-char-at-pos 'backward))
2837 ;; skip again, but make sure we don't overshoot the limit
2839 (while (and (not (viper-memq-char prev-char '(nil \n)))
2841 ;; must be non-newline separator
2842 (if (eq viper-syntax-preference 'strict-vi)
2843 (viper-memq-char prev-char '(?\ ?\t))
2844 (viper-memq-char (char-syntax prev-char) '(?\ ?-))))
2845 (viper-backward-char-carefully)
2846 (setq prev-char (viper-char-at-pos 'backward))))
2849 (viper-forward-char-carefully))
2853 (defun viper-forward-word (arg)
2856 (viper-leave-region-active)
2857 (let ((val (viper-p-val arg))
2858 (com (viper-getcom arg)))
2859 (if com (viper-move-marker-locally 'viper-com-point (point)))
2860 (viper-forward-word-kernel val)
2863 (cond ((viper-char-equal com ?c)
2864 (viper-separator-skipback-special 'twice viper-com-point))
2865 ;; Yank words including the whitespace, but not newline
2866 ((viper-char-equal com ?y)
2867 (viper-separator-skipback-special nil viper-com-point))
2868 ((viper-dotable-command-p com)
2869 (viper-separator-skipback-special nil viper-com-point)))
2870 (viper-execute-com 'viper-forward-word val com)))
2874 (defun viper-forward-Word (arg)
2875 "Forward word delimited by white characters."
2877 (viper-leave-region-active)
2878 (let ((val (viper-p-val arg))
2879 (com (viper-getcom arg)))
2880 (if com (viper-move-marker-locally 'viper-com-point (point)))
2882 (viper-skip-nonseparators 'forward)
2883 (viper-skip-separators t))
2885 (cond ((viper-char-equal com ?c)
2886 (viper-separator-skipback-special 'twice viper-com-point))
2887 ;; Yank words including the whitespace, but not newline
2888 ((viper-char-equal com ?y)
2889 (viper-separator-skipback-special nil viper-com-point))
2890 ((viper-dotable-command-p com)
2891 (viper-separator-skipback-special nil viper-com-point)))
2892 (viper-execute-com 'viper-forward-Word val com)))))
2895 ;; this is a bit different from Vi, but Vi's end of word
2896 ;; makes no sense whatsoever
2897 (defun viper-end-of-word-kernel ()
2898 (if (viper-end-of-word-p) (forward-char))
2899 (if (viper-looking-at-separator)
2900 (viper-skip-all-separators-forward))
2902 (cond ((viper-looking-at-alpha) (viper-skip-alpha-forward "_"))
2903 ((not (viper-looking-at-alphasep)) (viper-skip-nonalphasep-forward)))
2904 (viper-backward-char-carefully))
2906 (defun viper-end-of-word-p ()
2909 (cond ((viper-looking-at-alpha)
2911 (not (viper-looking-at-alpha)))
2912 ((not (viper-looking-at-alphasep))
2914 (viper-looking-at-alphasep))))))
2917 (defun viper-end-of-word (arg &optional careful)
2918 "Move point to end of current word."
2920 (viper-leave-region-active)
2921 (let ((val (viper-p-val arg))
2922 (com (viper-getcom arg)))
2923 (if com (viper-move-marker-locally 'viper-com-point (point)))
2924 (viper-loop val (viper-end-of-word-kernel))
2928 (viper-execute-com 'viper-end-of-word val com)))))
2930 (defun viper-end-of-Word (arg)
2931 "Forward to end of word delimited by white character."
2933 (viper-leave-region-active)
2934 (let ((val (viper-p-val arg))
2935 (com (viper-getcom arg)))
2936 (if com (viper-move-marker-locally 'viper-com-point (point)))
2938 (viper-end-of-word-kernel)
2939 (viper-skip-nonseparators 'forward)
2944 (viper-execute-com 'viper-end-of-Word val com)))))
2946 (defun viper-backward-word-kernel (val)
2948 (viper-backward-char-carefully)
2949 (cond ((viper-looking-at-alpha)
2950 (viper-skip-alpha-backward "_"))
2951 ((viper-looking-at-separator)
2953 (viper-skip-separators nil)
2954 (viper-backward-char-carefully)
2955 (cond ((viper-looking-at-alpha)
2956 (viper-skip-alpha-backward "_"))
2957 ((not (viper-looking-at-alphasep))
2958 (viper-skip-nonalphasep-backward))
2959 ((bobp)) ; could still be at separator, but at beg of buffer
2960 (t (forward-char))))
2961 ((not (viper-looking-at-alphasep))
2962 (viper-skip-nonalphasep-backward)))
2963 (setq val (1- val))))
2965 (defun viper-backward-word (arg)
2968 (viper-leave-region-active)
2969 (let ((val (viper-p-val arg))
2970 (com (viper-getcom arg)))
2973 (if (setq i (save-excursion (backward-char) (looking-at "\n")))
2975 (viper-move-marker-locally 'viper-com-point (point))
2976 (if i (forward-char))))
2977 (viper-backward-word-kernel val)
2978 (if com (viper-execute-com 'viper-backward-word val com))))
2980 (defun viper-backward-Word (arg)
2981 "Backward word delimited by white character."
2983 (viper-leave-region-active)
2984 (let ((val (viper-p-val arg))
2985 (com (viper-getcom arg)))
2988 (if (setq i (save-excursion (backward-char) (looking-at "\n")))
2990 (viper-move-marker-locally 'viper-com-point (point))
2991 (if i (forward-char))))
2993 (viper-skip-separators nil) ; nil means backward here
2994 (viper-skip-nonseparators 'backward))
2995 (if com (viper-execute-com 'viper-backward-Word val com))))
3001 (defun viper-beginning-of-line (arg)
3002 "Go to beginning of line."
3004 (viper-leave-region-active)
3005 (let ((val (viper-p-val arg))
3006 (com (viper-getcom arg)))
3007 (if com (viper-move-marker-locally 'viper-com-point (point)))
3008 (beginning-of-line val)
3009 (if com (viper-execute-com 'viper-beginning-of-line val com))))
3011 (defun viper-bol-and-skip-white (arg)
3012 "Beginning of line at first non-white character."
3014 (viper-leave-region-active)
3015 (let ((val (viper-p-val arg))
3016 (com (viper-getcom arg)))
3017 (if com (viper-move-marker-locally 'viper-com-point (point)))
3018 (forward-to-indentation (1- val))
3019 (if com (viper-execute-com 'viper-bol-and-skip-white val com))))
3021 (defun viper-goto-eol (arg)
3022 "Go to end of line."
3024 (viper-leave-region-active)
3025 (let ((val (viper-p-val arg))
3026 (com (viper-getcom arg)))
3027 (if com (viper-move-marker-locally 'viper-com-point (point)))
3029 (if com (viper-execute-com 'viper-goto-eol val com))
3030 (if viper-ex-style-motion
3031 (if (and (eolp) (not (bolp))
3032 ;; a fix for viper-change-to-eol
3033 (not (equal viper-current-state 'insert-state)))
3038 (defun viper-goto-col (arg)
3039 "Go to ARG's column."
3041 (viper-leave-region-active)
3042 (let ((val (viper-p-val arg))
3043 (com (viper-getcom arg))
3046 (viper-chars-in-region
3047 (viper-line-pos 'start) (viper-line-pos 'end)))
3048 (if com (viper-move-marker-locally 'viper-com-point (point)))
3050 (forward-char (1- (min line-len val)))
3051 (while (> (current-column) (1- val))
3053 (if com (viper-execute-com 'viper-goto-col val com))
3056 (if (> val (current-column)) (error "Viper bell")))
3060 (defun viper-next-line (arg)
3063 (viper-leave-region-active)
3064 (let ((val (viper-p-val arg))
3065 (com (viper-getCom arg)))
3066 (if com (viper-move-marker-locally 'viper-com-point (point)))
3067 ;; do not use forward-line! need to keep column
3068 (let ((line-move-visual nil))
3069 (if (featurep 'emacs)
3070 (with-no-warnings (next-line val))
3072 (if viper-ex-style-motion
3073 (if (and (eolp) (not (bolp))) (backward-char 1)))
3074 (setq this-command 'next-line)
3075 (if com (viper-execute-com 'viper-next-line val com))))
3077 (declare-function widget-type "wid-edit" (widget))
3078 (declare-function widget-button-press "wid-edit" (pos &optional event))
3079 (declare-function viper-set-hooks "viper" ())
3081 (defun viper-next-line-at-bol (arg)
3082 "Next line at beginning of line.
3083 If point is on a widget or a button, simulate clicking on that widget/button."
3085 (let* ((field (get-char-property (point) 'field))
3086 (button (get-char-property (point) 'button))
3087 (doc (get-char-property (point) 'widget-doc))
3088 (widget (or field button doc)))
3090 (if (symbolp widget)
3091 (get widget 'widget-type)
3093 (get (widget-type widget) 'widget-type))))
3094 (widget-button-press (point))
3095 (if (and (fboundp 'button-at) (fboundp 'push-button) (button-at (point)))
3097 ;; not a widget or a button
3098 (viper-leave-region-active)
3101 (if (eobp) (error "Last line in buffer")))
3102 (let ((val (viper-p-val arg))
3103 (com (viper-getCom arg)))
3104 (if com (viper-move-marker-locally 'viper-com-point (point)))
3106 (back-to-indentation)
3107 (if com (viper-execute-com 'viper-next-line-at-bol val com)))))))
3110 (defun viper-previous-line (arg)
3111 "Go to previous line."
3113 (viper-leave-region-active)
3114 (let ((val (viper-p-val arg))
3115 (com (viper-getCom arg)))
3116 (if com (viper-move-marker-locally 'viper-com-point (point)))
3117 ;; do not use forward-line! need to keep column
3118 (let ((line-move-visual nil))
3119 (if (featurep 'emacs)
3120 (with-no-warnings (previous-line val))
3121 (previous-line val)))
3122 (if viper-ex-style-motion
3123 (if (and (eolp) (not (bolp))) (backward-char 1)))
3124 (setq this-command 'previous-line)
3125 (if com (viper-execute-com 'viper-previous-line val com))))
3128 (defun viper-previous-line-at-bol (arg)
3129 "Previous line at beginning of line."
3131 (viper-leave-region-active)
3134 (if (bobp) (error "First line in buffer")))
3135 (let ((val (viper-p-val arg))
3136 (com (viper-getCom arg)))
3137 (if com (viper-move-marker-locally 'viper-com-point (point)))
3138 (forward-line (- val))
3139 (back-to-indentation)
3140 (if com (viper-execute-com 'viper-previous-line val com))))
3142 (defun viper-change-to-eol (arg)
3143 "Change to end of line."
3145 (viper-goto-eol (cons arg ?c)))
3147 (defun viper-kill-line (arg)
3150 (viper-goto-eol (cons arg ?d)))
3152 (defun viper-erase-line (arg)
3155 (viper-beginning-of-line (cons arg ?d)))
3160 (defun viper-goto-line (arg)
3161 "Go to ARG's line. Without ARG go to end of buffer."
3163 (let ((val (viper-P-val arg))
3164 (com (viper-getCom arg)))
3165 (viper-move-marker-locally 'viper-com-point (point))
3166 (viper-deactivate-mark)
3169 (goto-char (point-max))
3170 (goto-char (point-min))
3171 (forward-line (1- val)))
3173 ;; positioning is done twice: before and after command execution
3174 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3175 (back-to-indentation)
3177 (if com (viper-execute-com 'viper-goto-line val com))
3179 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3180 (back-to-indentation)
3183 ;; Find ARG's occurrence of CHAR on the current line.
3184 ;; If FORWARD then search is forward, otherwise backward. OFFSET is used to
3185 ;; adjust point after search.
3186 (defun viper-find-char (arg char forward offset)
3187 (or (char-or-string-p char) (error "Viper bell"))
3188 (let ((arg (if forward arg (- arg)))
3189 (cmd (if (eq viper-intermediate-command 'viper-repeat)
3191 (viper-array-to-string (this-command-keys))))
3192 point region-beg region-end)
3195 (if (> arg 0) ; forward
3197 (setq region-beg (point))
3198 (if viper-allow-multiline-replace-regions
3199 (viper-forward-paragraph 1)
3201 (setq region-end (point)))
3202 (setq region-end (point))
3203 (if viper-allow-multiline-replace-regions
3204 (viper-backward-paragraph 1)
3205 (beginning-of-line))
3206 (setq region-beg (point)))
3207 (if (or (and (< arg 0)
3208 (< (- region-end region-beg)
3209 (if viper-allow-multiline-replace-regions
3213 (< (- region-end region-beg)
3214 (if viper-allow-multiline-replace-regions
3217 (error "Command `%s': At %s of %s"
3219 (if (> arg 0) "end" "beginning")
3220 (if viper-allow-multiline-replace-regions
3221 "paragraph" "line")))
3222 (narrow-to-region region-beg region-end)
3223 ;; if arg > 0, point is forwarded before search.
3224 (if (> arg 0) (goto-char (1+ (point-min)))
3225 (goto-char (point-max)))
3226 (if (let ((case-fold-search nil))
3227 (search-forward (char-to-string char) nil 0 arg))
3228 (setq point (point))
3229 (error "Command `%s': `%c' not found" cmd char))))
3232 (backward-char (if offset 2 1))
3233 (forward-char (if offset 1 0)))))
3235 (defun viper-find-char-forward (arg)
3236 "Find char on the line.
3237 If called interactively read the char to find from the terminal, and if
3238 called from viper-repeat, the char last used is used. This behavior is
3239 controlled by the sign of prefix numeric value."
3241 (let ((val (viper-p-val arg))
3242 (com (viper-getcom arg))
3243 (cmd-representation (nth 5 viper-d-com)))
3245 ;; this means that the function was called interactively
3246 (setq viper-f-char (read-char)
3249 ;; viper-repeat --- set viper-F-char from command-keys
3250 (setq viper-F-char (if (stringp cmd-representation)
3251 (viper-seq-last-elt cmd-representation)
3253 viper-f-char viper-F-char)
3255 (if com (viper-move-marker-locally 'viper-com-point (point)))
3257 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) t nil)
3261 (setq viper-F-char viper-f-char) ; set new viper-F-char
3263 (viper-execute-com 'viper-find-char-forward val com)))))
3265 (defun viper-goto-char-forward (arg)
3266 "Go up to char ARG forward on line."
3268 (let ((val (viper-p-val arg))
3269 (com (viper-getcom arg))
3270 (cmd-representation (nth 5 viper-d-com)))
3272 ;; this means that the function was called interactively
3273 (setq viper-f-char (read-char)
3276 ;; viper-repeat --- set viper-F-char from command-keys
3277 (setq viper-F-char (if (stringp cmd-representation)
3278 (viper-seq-last-elt cmd-representation)
3280 viper-f-char viper-F-char)
3282 (if com (viper-move-marker-locally 'viper-com-point (point)))
3284 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) t t)
3288 (setq viper-F-char viper-f-char) ; set new viper-F-char
3290 (viper-execute-com 'viper-goto-char-forward val com)))))
3292 (defun viper-find-char-backward (arg)
3293 "Find char ARG on line backward."
3295 (let ((val (viper-p-val arg))
3296 (com (viper-getcom arg))
3297 (cmd-representation (nth 5 viper-d-com)))
3299 ;; this means that the function was called interactively
3300 (setq viper-f-char (read-char)
3303 ;; viper-repeat --- set viper-F-char from command-keys
3304 (setq viper-F-char (if (stringp cmd-representation)
3305 (viper-seq-last-elt cmd-representation)
3307 viper-f-char viper-F-char)
3309 (if com (viper-move-marker-locally 'viper-com-point (point)))
3311 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) nil nil)
3315 (setq viper-F-char viper-f-char) ; set new viper-F-char
3316 (viper-execute-com 'viper-find-char-backward val com)))))
3318 (defun viper-goto-char-backward (arg)
3319 "Go up to char ARG backward on line."
3321 (let ((val (viper-p-val arg))
3322 (com (viper-getcom arg))
3323 (cmd-representation (nth 5 viper-d-com)))
3325 ;; this means that the function was called interactively
3326 (setq viper-f-char (read-char)
3329 ;; viper-repeat --- set viper-F-char from command-keys
3330 (setq viper-F-char (if (stringp cmd-representation)
3331 (viper-seq-last-elt cmd-representation)
3333 viper-f-char viper-F-char)
3335 (if com (viper-move-marker-locally 'viper-com-point (point)))
3337 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) nil t)
3341 (setq viper-F-char viper-f-char) ; set new viper-F-char
3342 (viper-execute-com 'viper-goto-char-backward val com)))))
3344 (defun viper-repeat-find (arg)
3345 "Repeat previous find command."
3347 (let ((val (viper-p-val arg))
3348 (com (viper-getcom arg)))
3349 (viper-deactivate-mark)
3350 (if com (viper-move-marker-locally 'viper-com-point (point)))
3351 (viper-find-char val viper-f-char viper-f-forward viper-f-offset)
3354 (if viper-f-forward (forward-char))
3355 (viper-execute-com 'viper-repeat-find val com)))))
3357 (defun viper-repeat-find-opposite (arg)
3358 "Repeat previous find command in the opposite direction."
3360 (let ((val (viper-p-val arg))
3361 (com (viper-getcom arg)))
3362 (viper-deactivate-mark)
3363 (if com (viper-move-marker-locally 'viper-com-point (point)))
3364 (viper-find-char val viper-f-char (not viper-f-forward) viper-f-offset)
3367 (if viper-f-forward (forward-char))
3368 (viper-execute-com 'viper-repeat-find-opposite val com)))))
3371 ;; window scrolling etc.
3373 (defun viper-window-top (arg)
3374 "Go to home window line."
3376 (let ((val (viper-p-val arg))
3377 (com (viper-getCom arg)))
3378 (viper-leave-region-active)
3379 (if com (viper-move-marker-locally 'viper-com-point (point)))
3381 (move-to-window-line (1- val))
3383 ;; positioning is done twice: before and after command execution
3384 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3385 (back-to-indentation)
3387 (if com (viper-execute-com 'viper-window-top val com))
3389 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3390 (back-to-indentation)
3393 (defun viper-window-middle (arg)
3394 "Go to middle window line."
3396 (let ((val (viper-p-val arg))
3397 (com (viper-getCom arg)))
3398 (viper-leave-region-active)
3399 (if com (viper-move-marker-locally 'viper-com-point (point)))
3401 (move-to-window-line (+ (/ (1- (window-height)) 2) (1- val)))
3403 ;; positioning is done twice: before and after command execution
3404 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3405 (back-to-indentation)
3407 (if com (viper-execute-com 'viper-window-middle val com))
3409 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3410 (back-to-indentation)
3413 (defun viper-window-bottom (arg)
3414 "Go to last window line."
3416 (let ((val (viper-p-val arg))
3417 (com (viper-getCom arg)))
3418 (viper-leave-region-active)
3419 (if com (viper-move-marker-locally 'viper-com-point (point)))
3421 (move-to-window-line (- val))
3423 ;; positioning is done twice: before and after command execution
3424 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3425 (back-to-indentation)
3427 (if com (viper-execute-com 'viper-window-bottom val com))
3429 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3430 (back-to-indentation)
3433 (defun viper-line-to-top (arg)
3434 "Put current line on the home line."
3436 (recenter (1- arg)))
3438 (defun viper-line-to-middle (arg)
3439 "Put current line on the middle line."
3441 (recenter (+ (1- arg) (/ (1- (window-height)) 2))))
3443 (defun viper-line-to-bottom (arg)
3444 "Put current line on the last line."
3446 (recenter (- (window-height) (1+ arg))))
3448 ;; If point is within viper-search-scroll-threshold of window top or bottom,
3449 ;; scroll up or down 1/7 of window height, depending on whether we are at the
3450 ;; bottom or at the top of the window. This function is called by viper-search
3451 ;; (which is called from viper-search-forward/backward/next). If the value of
3452 ;; viper-search-scroll-threshold is negative - don't scroll.
3453 (defun viper-adjust-window ()
3454 (let ((win-height (if (featurep 'xemacs)
3455 (window-displayed-height)
3456 (1- (window-height)))) ; adjust for modeline
3458 at-top-p at-bottom-p
3459 min-scroll direction)
3461 (move-to-window-line 0) ; top
3463 (<= (count-lines pt (point))
3464 viper-search-scroll-threshold))
3465 (move-to-window-line -1) ; bottom
3467 (<= (count-lines pt (point)) viper-search-scroll-threshold)))
3468 (cond (at-top-p (setq min-scroll (1- viper-search-scroll-threshold)
3470 (at-bottom-p (setq min-scroll (1+ viper-search-scroll-threshold)
3474 (* (max min-scroll (/ win-height 7)) direction)))
3479 ;; must correct this to only match ( to ) etc. On the other hand
3480 ;; it is good that paren match gets confused, because that way you
3481 ;; catch _all_ imbalances.
3483 (defun viper-paren-match (arg)
3484 "Go to the matching parenthesis."
3486 (viper-leave-region-active)
3487 (let ((com (viper-getcom arg))
3488 (parse-sexp-ignore-comments viper-parse-sexp-ignore-comments)
3491 (if (or (> arg 99) (< arg 1))
3492 (error "Prefix must be between 1 and 99")
3494 (if (> (point-max) 80000)
3495 (* (/ (point-max) 100) arg)
3496 (/ (* (point-max) arg) 100)))
3497 (back-to-indentation))
3498 (let (beg-lim end-lim)
3499 (if (and (eolp) (not (bolp))) (forward-char -1))
3500 (if (not (looking-at "[][(){}]"))
3501 (setq anchor-point (point)))
3504 (setq beg-lim (point))
3506 (setq end-lim (point)))
3507 (cond ((re-search-forward "[][(){}]" end-lim t)
3509 ((re-search-backward "[][(){}]" beg-lim t))
3511 (error "No matching character on line"))))
3512 (cond ((looking-at "[\(\[{]")
3513 (if com (viper-move-marker-locally 'viper-com-point (point)))
3516 (viper-execute-com 'viper-paren-match nil com)
3521 (viper-move-marker-locally 'viper-com-point anchor-point)
3523 (viper-execute-com 'viper-paren-match nil com)
3525 ((looking-at "[])}]")
3527 (if com (viper-move-marker-locally 'viper-com-point (point)))
3529 (if com (viper-execute-com 'viper-paren-match nil com)))
3530 (t (error "Viper bell"))))))
3532 (defun viper-toggle-parse-sexp-ignore-comments ()
3534 (setq viper-parse-sexp-ignore-comments
3535 (not viper-parse-sexp-ignore-comments))
3537 "From now on, `%%' will %signore parentheses inside comment fields"
3538 (if viper-parse-sexp-ignore-comments "" "NOT "))))
3541 ;; sentence, paragraph and heading
3543 (defun viper-forward-sentence (arg)
3546 (or (eq last-command this-command)
3548 (let ((val (viper-p-val arg))
3549 (com (viper-getcom arg)))
3550 (if com (viper-move-marker-locally 'viper-com-point (point)))
3551 (forward-sentence val)
3552 (if com (viper-execute-com 'viper-forward-sentence nil com))))
3554 (defun viper-backward-sentence (arg)
3555 "Backward sentence."
3557 (or (eq last-command this-command)
3559 (let ((val (viper-p-val arg))
3560 (com (viper-getcom arg)))
3561 (if com (viper-move-marker-locally 'viper-com-point (point)))
3562 (backward-sentence val)
3563 (if com (viper-execute-com 'viper-backward-sentence nil com))))
3565 (defun viper-forward-paragraph (arg)
3566 "Forward paragraph."
3568 (or (eq last-command this-command)
3570 (let ((val (viper-p-val arg))
3571 ;; if you want d} operate on whole lines, change viper-getcom to
3572 ;; viper-getCom below
3573 (com (viper-getcom arg)))
3574 (if com (viper-move-marker-locally 'viper-com-point (point)))
3575 (forward-paragraph val)
3579 (viper-execute-com 'viper-forward-paragraph nil com)))))
3581 (defun viper-backward-paragraph (arg)
3582 "Backward paragraph."
3584 (or (eq last-command this-command)
3586 (let ((val (viper-p-val arg))
3587 ;; if you want d{ operate on whole lines, change viper-getcom to
3588 ;; viper-getCom below
3589 (com (viper-getcom arg)))
3590 (if com (viper-move-marker-locally 'viper-com-point (point)))
3591 (backward-paragraph val)
3595 (viper-execute-com 'viper-backward-paragraph nil com)
3596 (backward-char 1)))))
3598 ;; should be mode-specific
3599 (defun viper-prev-heading (arg)
3601 (let ((val (viper-p-val arg))
3602 (com (viper-getCom arg)))
3603 (if com (viper-move-marker-locally 'viper-com-point (point)))
3604 (re-search-backward viper-heading-start nil t val)
3605 (goto-char (match-beginning 0))
3606 (if com (viper-execute-com 'viper-prev-heading nil com))))
3608 (defun viper-heading-end (arg)
3610 (let ((val (viper-p-val arg))
3611 (com (viper-getCom arg)))
3612 (if com (viper-move-marker-locally 'viper-com-point (point)))
3613 (re-search-forward viper-heading-end nil t val)
3614 (goto-char (match-beginning 0))
3615 (if com (viper-execute-com 'viper-heading-end nil com))))
3617 (defun viper-next-heading (arg)
3619 (let ((val (viper-p-val arg))
3620 (com (viper-getCom arg)))
3621 (if com (viper-move-marker-locally 'viper-com-point (point)))
3623 (re-search-forward viper-heading-start nil t val)
3624 (goto-char (match-beginning 0))
3625 (if com (viper-execute-com 'viper-next-heading nil com))))
3630 (defun viper-scroll-screen (arg)
3631 "Scroll to next screen."
3637 (setq arg (1- arg)))
3640 (setq arg (1+ arg))))
3644 (message "End of buffer")
3645 (goto-char (point-max)))
3646 (message "Beginning of buffer")
3647 (goto-char (point-min))))
3650 (defun viper-scroll-screen-back (arg)
3651 "Scroll to previous screen."
3653 (viper-scroll-screen (- arg)))
3655 (defun viper-scroll-down (arg)
3656 "Pull down half screen."
3660 (scroll-down (/ (window-height) 2))
3663 (message "Beginning of buffer")
3664 (goto-char (point-min)))))
3666 (defun viper-scroll-down-one (arg)
3667 "Scroll up one line."
3671 (defun viper-scroll-up (arg)
3672 "Pull up half screen."
3676 (scroll-up (/ (window-height) 2))
3679 (message "End of buffer")
3680 (goto-char (point-max)))))
3682 (defun viper-scroll-up-one (arg)
3683 "Scroll down one line."
3690 (defun viper-if-string (prompt)
3691 (if (memq viper-intermediate-command
3692 '(viper-command-argument viper-digit-argument viper-repeat))
3693 (setq viper-this-command-keys (this-command-keys)))
3694 (let ((s (viper-read-string-with-history
3697 'viper-search-history
3698 (car viper-search-history))))
3699 (if (not (string= s ""))
3700 (setq viper-s-string s))))
3703 (defun viper-toggle-search-style (arg)
3704 "Toggle the value of viper-case-fold-search/viper-re-search.
3705 Without prefix argument, will ask which search style to toggle. With prefix
3706 arg 1,toggles viper-case-fold-search; with arg 2 toggles viper-re-search.
3708 Although this function is bound to \\[viper-toggle-search-style], the most
3709 convenient way to use it is to bind `//' to the macro
3710 `1 M-x viper-toggle-search-style' and `///' to
3711 `2 M-x viper-toggle-search-style'. In this way, hitting `//' quickly will
3712 toggle case-fold-search and hitting `/' three times witth toggle regexp
3713 search. Macros are more convenient in this case because they don't affect
3714 the Emacs binding of `/'."
3717 (cond ((or (eq arg 1)
3719 (y-or-n-p (format "Search style: '%s'. Want '%s'? "
3720 (if viper-case-fold-search
3721 "case-insensitive" "case-sensitive")
3722 (if viper-case-fold-search
3724 "case-insensitive")))))
3725 (setq viper-case-fold-search (null viper-case-fold-search))
3726 (if viper-case-fold-search
3727 (setq msg "Search becomes case-insensitive")
3728 (setq msg "Search becomes case-sensitive")))
3731 (y-or-n-p (format "Search style: '%s'. Want '%s'? "
3733 "regexp-search" "vanilla-search")
3736 "regexp-search")))))
3737 (setq viper-re-search (null viper-re-search))
3739 (setq msg "Search becomes regexp-style")
3740 (setq msg "Search becomes vanilla-style")))
3742 (setq msg "Search style remains unchanged")))
3745 (defun viper-set-searchstyle-toggling-macros (unset &optional major-mode)
3746 "Set the macros for toggling the search style in Viper's vi-state.
3747 The macro that toggles case sensitivity is bound to `//', and the one that
3748 toggles regexp search is bound to `///'.
3749 With a prefix argument, this function unsets the macros.
3750 If MAJOR-MODE is set, set the macros only in that major mode."
3753 (if (and major-mode (symbolp major-mode))
3754 (setq scope major-mode)
3759 ;; toggle case sensitivity in search
3760 (viper-record-kbd-macro
3762 [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]
3764 ;; toggle regexp/vanila search
3765 (viper-record-kbd-macro
3767 [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]
3771 "// and /// now toggle case-sensitivity and regexp search")))
3772 (viper-unrecord-kbd-macro "//" 'vi-state)
3774 (viper-unrecord-kbd-macro "///" 'vi-state)))
3778 (defun viper-set-parsing-style-toggling-macro (unset)
3779 "Set `%%%' to be a macro that toggles whether comment fields should be parsed for matching parentheses.
3780 This is used in conjunction with the `%' command.
3782 With a prefix argument, unsets the macro."
3787 ;; Make %%% toggle parsing comments for matching parentheses
3788 (viper-record-kbd-macro
3790 [(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]
3794 "%%%%%% now toggles whether comments should be parsed for matching parentheses")))
3795 (viper-unrecord-kbd-macro "%%%" 'vi-state))))
3798 (defun viper-set-emacs-state-searchstyle-macros (unset &optional arg-majormode)
3799 "Set the macros for toggling the search style in Viper's emacs-state.
3800 The macro that toggles case sensitivity is bound to `//', and the one that
3801 toggles regexp search is bound to `///'.
3802 With a prefix argument, this function unsets the macros.
3803 If the optional prefix argument is non-nil and specifies a valid major mode,
3804 this sets the macros only in the macros in that major mode. Otherwise,
3805 the macros are set in the current major mode.
3806 \(When unsetting the macros, the second argument has no effect.\)"
3811 ;; toggle case sensitivity in search
3812 (viper-record-kbd-macro
3814 [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]
3815 (or arg-majormode major-mode))
3816 ;; toggle regexp/vanila search
3817 (viper-record-kbd-macro
3819 [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]
3820 (or arg-majormode major-mode))
3823 "// and /// now toggle case-sensitivity and regexp search.")))
3824 (viper-unrecord-kbd-macro "//" 'emacs-state)
3826 (viper-unrecord-kbd-macro "///" 'emacs-state))))
3829 (defun viper-search-forward (arg)
3830 "Search a string forward.
3831 ARG is used to find the ARG's occurrence of the string.
3832 Null string will repeat previous search."
3834 (let ((val (viper-P-val arg))
3835 (com (viper-getcom arg))
3836 (old-str viper-s-string)
3838 (setq viper-s-forward t)
3839 (viper-if-string "/")
3840 ;; this is not used at present, but may be used later
3841 (if (or (not (equal old-str viper-s-string))
3842 (not (markerp viper-local-search-start-marker))
3843 (not (marker-buffer viper-local-search-start-marker)))
3844 (setq viper-local-search-start-marker (point-marker)))
3845 (viper-search viper-s-string t val)
3848 (viper-move-marker-locally 'viper-com-point (mark t))
3849 (viper-execute-com 'viper-search-next val com)))
3852 (defun viper-search-backward (arg)
3853 "Search a string backward.
3854 ARG is used to find the ARG's occurrence of the string.
3855 Null string will repeat previous search."
3857 (let ((val (viper-P-val arg))
3858 (com (viper-getcom arg))
3859 (old-str viper-s-string)
3861 (setq viper-s-forward nil)
3862 (viper-if-string "?")
3863 ;; this is not used at present, but may be used later
3864 (if (or (not (equal old-str viper-s-string))
3865 (not (markerp viper-local-search-start-marker))
3866 (not (marker-buffer viper-local-search-start-marker)))
3867 (setq viper-local-search-start-marker (point-marker)))
3868 (viper-search viper-s-string nil val)
3871 (viper-move-marker-locally 'viper-com-point (mark t))
3872 (viper-execute-com 'viper-search-next val com)))))
3875 ;; Search for COUNT's occurrence of STRING.
3876 ;; Search is forward if FORWARD is non-nil, otherwise backward.
3877 ;; INIT-POINT is the position where search is to start.
3879 ;; (STRING FORW COUNT &optional NO-OFFSET INIT-POINT LIMIT FAIL-IF-NOT-FOUND)
3880 (defun viper-search (string forward arg
3881 &optional no-offset init-point fail-if-not-found)
3882 (if (not (equal string ""))
3883 (let ((val (viper-p-val arg))
3884 (com (viper-getcom arg))
3885 (offset (not no-offset))
3886 (case-fold-search viper-case-fold-search)
3887 (start-point (or init-point (point))))
3888 (viper-deactivate-mark)
3892 (if offset (viper-forward-char-carefully))
3895 (re-search-forward string nil nil val)
3896 (re-search-backward string))
3897 (search-forward string nil nil val)
3898 (search-backward string))
3899 (if (not (equal start-point (point)))
3900 (push-mark start-point t)))
3902 (if (and (not fail-if-not-found) viper-search-wrap-around)
3904 (message "Search wrapped around BOTTOM of buffer")
3905 (goto-char (point-min))
3906 (viper-search string forward (cons 1 com) t start-point 'fail)
3907 ;; don't wait in macros
3908 (or executing-kbd-macro
3909 (memq viper-intermediate-command
3911 viper-digit-argument
3912 viper-command-argument))
3914 ;; delete the wrap-around message
3917 (goto-char start-point)
3918 (error "`%s': %s not found"
3920 (if viper-re-search "Pattern" "String"))
3926 (re-search-backward string nil nil val)
3927 (search-backward string nil nil val))
3928 (if (not (equal start-point (point)))
3929 (push-mark start-point t)))
3931 (if (and (not fail-if-not-found) viper-search-wrap-around)
3933 (message "Search wrapped around TOP of buffer")
3934 (goto-char (point-max))
3935 (viper-search string forward (cons 1 com) t start-point 'fail)
3936 ;; don't wait in macros
3937 (or executing-kbd-macro
3938 (memq viper-intermediate-command
3940 viper-digit-argument
3941 viper-command-argument))
3943 ;; delete the wrap-around message
3946 (goto-char start-point)
3947 (error "`%s': %s not found"
3949 (if viper-re-search "Pattern" "String"))
3951 ;; pull up or down if at top/bottom of window
3952 (viper-adjust-window)
3953 ;; highlight the result of search
3954 ;; don't wait and don't highlight in macros
3955 (or executing-kbd-macro
3956 (memq viper-intermediate-command
3957 '(viper-repeat viper-digit-argument viper-command-argument))
3958 (viper-flash-search-pattern))
3961 (defun viper-search-next (arg)
3962 "Repeat previous search."
3964 (let ((val (viper-p-val arg))
3965 (com (viper-getcom arg))
3967 (if (or (null viper-s-string) (string= viper-s-string ""))
3968 (error viper-NoPrevSearch))
3969 (viper-search viper-s-string viper-s-forward arg)
3972 (viper-move-marker-locally 'viper-com-point (mark t))
3973 (viper-execute-com 'viper-search-next val com)))))
3975 (defun viper-search-Next (arg)
3976 "Repeat previous search in the reverse direction."
3978 (let ((val (viper-p-val arg))
3979 (com (viper-getcom arg))
3981 (if (null viper-s-string) (error viper-NoPrevSearch))
3982 (viper-search viper-s-string (not viper-s-forward) arg)
3985 (viper-move-marker-locally 'viper-com-point (mark t))
3986 (viper-execute-com 'viper-search-Next val com)))))
3989 ;; Search contents of buffer defined by one of Viper's motion commands.
3990 ;; Repeatable via `n' and `N'.
3991 (defun viper-buffer-search-enable (&optional c)
3992 (cond (c (setq viper-buffer-search-char c))
3993 ((null viper-buffer-search-char)
3994 ;; ?g acts as a default value for viper-buffer-search-char
3995 (setq viper-buffer-search-char ?g)))
3996 (define-key viper-vi-basic-map
3997 (cond ((viper-characterp viper-buffer-search-char)
3998 (char-to-string viper-buffer-search-char))
3999 (t (error "viper-buffer-search-char: wrong value type, %S"
4000 viper-buffer-search-char)))
4001 'viper-command-argument)
4002 (aset viper-exec-array viper-buffer-search-char 'viper-exec-buffer-search)
4003 (setq viper-prefix-commands
4004 (cons viper-buffer-search-char viper-prefix-commands)))
4006 ;; This is a Viper wraper for isearch-forward.
4007 (defun viper-isearch-forward (arg)
4008 "Do incremental search forward."
4010 ;; emacs bug workaround
4011 (if (listp arg) (setq arg (car arg)))
4012 (viper-exec-form-in-emacs (list 'isearch-forward arg)))
4014 ;; This is a Viper wraper for isearch-backward."
4015 (defun viper-isearch-backward (arg)
4016 "Do incremental search backward."
4018 ;; emacs bug workaround
4019 (if (listp arg) (setq arg (car arg)))
4020 (viper-exec-form-in-emacs (list 'isearch-backward arg)))
4023 ;; visiting and killing files, buffers
4025 (defun viper-switch-to-buffer ()
4026 "Switch to buffer in the current window."
4028 (let ((other-buffer (other-buffer (current-buffer)))
4031 (funcall viper-read-buffer-function
4032 "Switch to buffer in this window: " other-buffer))
4033 (switch-to-buffer buffer)))
4035 (defun viper-switch-to-buffer-other-window ()
4036 "Switch to buffer in another window."
4038 (let ((other-buffer (other-buffer (current-buffer)))
4041 (funcall viper-read-buffer-function
4042 "Switch to buffer in another window: " other-buffer))
4043 (switch-to-buffer-other-window buffer)))
4045 (defun viper-kill-buffer ()
4048 (let (buffer buffer-name)
4050 (funcall viper-read-buffer-function
4051 (format "Kill buffer \(%s\): "
4052 (buffer-name (current-buffer)))))
4054 (if (null buffer-name)
4056 (get-buffer buffer-name)))
4057 (if (null buffer) (error "`%s': No such buffer" buffer-name))
4058 (if (or (not (buffer-modified-p buffer))
4061 "Buffer `%s' is modified, are you sure you want to kill it? "
4063 (kill-buffer buffer)
4064 (error "Buffer not killed"))))
4070 (defsubst viper-yank (text)
4071 "Yank TEXT silently. This works correctly with Emacs's yank-pop command."
4073 (setq this-command 'yank))
4075 (defun viper-put-back (arg)
4076 "Put back after point/below line."
4078 (let ((val (viper-p-val arg))
4079 (text (if viper-use-register
4080 (cond ((viper-valid-register viper-use-register '(digit))
4082 (- viper-use-register ?1) 'do-not-rotate))
4083 ((viper-valid-register viper-use-register)
4084 (get-register (downcase viper-use-register)))
4085 (t (error viper-InvalidRegister viper-use-register)))
4087 sv-point chars-inserted lines-inserted)
4089 (if viper-use-register
4090 (let ((reg viper-use-register))
4091 (setq viper-use-register nil)
4092 (error viper-EmptyRegister reg))
4093 (error "Viper bell")))
4094 (setq viper-use-register nil)
4095 (if (viper-end-with-a-newline-p text)
4101 (beginning-of-line))
4102 (if (not (eolp)) (viper-forward-char-carefully)))
4103 (set-marker (viper-mark-marker) (point) (current-buffer))
4104 (viper-set-destructive-command
4105 (list 'viper-put-back val nil viper-use-register nil nil))
4106 (setq sv-point (point))
4107 (viper-loop val (viper-yank text))
4108 (setq chars-inserted (abs (- (point) sv-point))
4109 lines-inserted (abs (count-lines (point) sv-point)))
4110 (if (or (> chars-inserted viper-change-notification-threshold)
4111 (> lines-inserted viper-change-notification-threshold))
4112 (unless (viper-is-in-minibuffer)
4113 (message "Inserted %d character(s), %d line(s)"
4114 chars-inserted lines-inserted))))
4115 ;; Vi puts cursor on the last char when the yanked text doesn't contain a
4116 ;; newline; it leaves the cursor at the beginning when the text contains
4118 (if (viper-same-line (point) (mark))
4119 (or (= (point) (mark)) (viper-backward-char-carefully))
4120 (exchange-point-and-mark)
4122 (back-to-indentation)))
4123 (viper-deactivate-mark))
4125 (defun viper-Put-back (arg)
4126 "Put back at point/above line."
4128 (let ((val (viper-p-val arg))
4129 (text (if viper-use-register
4130 (cond ((viper-valid-register viper-use-register '(digit))
4132 (- viper-use-register ?1) 'do-not-rotate))
4133 ((viper-valid-register viper-use-register)
4134 (get-register (downcase viper-use-register)))
4135 (t (error viper-InvalidRegister viper-use-register)))
4137 sv-point chars-inserted lines-inserted)
4139 (if viper-use-register
4140 (let ((reg viper-use-register))
4141 (setq viper-use-register nil)
4142 (error viper-EmptyRegister reg))
4143 (error "Viper bell")))
4144 (setq viper-use-register nil)
4145 (if (viper-end-with-a-newline-p text) (beginning-of-line))
4146 (viper-set-destructive-command
4147 (list 'viper-Put-back val nil viper-use-register nil nil))
4148 (set-marker (viper-mark-marker) (point) (current-buffer))
4149 (setq sv-point (point))
4150 (viper-loop val (viper-yank text))
4151 (setq chars-inserted (abs (- (point) sv-point))
4152 lines-inserted (abs (count-lines (point) sv-point)))
4153 (if (or (> chars-inserted viper-change-notification-threshold)
4154 (> lines-inserted viper-change-notification-threshold))
4155 (unless (viper-is-in-minibuffer)
4156 (message "Inserted %d character(s), %d line(s)"
4157 chars-inserted lines-inserted))))
4158 ;; Vi puts cursor on the last char when the yanked text doesn't contain a
4159 ;; newline; it leaves the cursor at the beginning when the text contains
4161 (if (viper-same-line (point) (mark))
4162 (or (= (point) (mark)) (viper-backward-char-carefully))
4163 (exchange-point-and-mark)
4165 (back-to-indentation)))
4166 (viper-deactivate-mark))
4169 ;; Copy region to kill-ring.
4170 ;; If BEG and END do not belong to the same buffer, copy empty region.
4171 (defun viper-copy-region-as-kill (beg end)
4173 (copy-region-as-kill beg end)
4174 (error (copy-region-as-kill beg beg))))
4177 (defun viper-delete-char (arg)
4178 "Delete next character."
4180 (let ((val (viper-p-val arg))
4182 (viper-set-destructive-command
4183 (list 'viper-delete-char val nil nil nil nil))
4184 (if (and viper-ex-style-editing
4185 (> val (viper-chars-in-region (point) (viper-line-pos 'end))))
4186 (setq val (viper-chars-in-region (point) (viper-line-pos 'end))))
4187 (if (and viper-ex-style-motion (eolp))
4188 (if (bolp) (error "Viper bell") (setq val 0))) ; not bol---simply back 1 ch
4190 (viper-forward-char-carefully val)
4191 (setq end-del-pos (point)))
4192 (if viper-use-register
4194 (cond ((viper-valid-register viper-use-register '((Letter)))
4195 (viper-append-to-register
4196 (downcase viper-use-register) (point) end-del-pos))
4197 ((viper-valid-register viper-use-register)
4199 viper-use-register (point) end-del-pos nil))
4200 (t (error viper-InvalidRegister viper-use-register)))
4201 (setq viper-use-register nil)))
4204 (if viper-ex-style-motion
4205 (if (and (eolp) (not (bolp))) (backward-char 1)))
4208 (defun viper-delete-backward-char (arg)
4209 "Delete previous character. On reaching beginning of line, stop and beep."
4211 (let ((val (viper-p-val arg))
4213 (viper-set-destructive-command
4214 (list 'viper-delete-backward-char val nil nil nil nil))
4216 viper-ex-style-editing
4217 (> val (viper-chars-in-region (viper-line-pos 'start) (point))))
4218 (setq val (viper-chars-in-region (viper-line-pos 'start) (point))))
4220 (viper-backward-char-carefully val)
4221 (setq end-del-pos (point)))
4222 (if viper-use-register
4224 (cond ((viper-valid-register viper-use-register '(Letter))
4225 (viper-append-to-register
4226 (downcase viper-use-register) end-del-pos (point)))
4227 ((viper-valid-register viper-use-register)
4229 viper-use-register end-del-pos (point) nil))
4230 (t (error viper-InvalidRegister viper-use-register)))
4231 (setq viper-use-register nil)))
4232 (if (and (bolp) viper-ex-style-editing)
4234 (delete-backward-char val t)))
4237 (defun viper-del-backward-char-in-insert ()
4238 "Delete 1 char backwards while in insert mode."
4240 (if (and viper-ex-style-editing (bolp))
4242 ;; don't put on kill ring
4243 (delete-backward-char 1 nil)))
4246 (defun viper-del-backward-char-in-replace ()
4247 "Delete one character in replace mode.
4248 If `viper-delete-backwards-in-replace' is t, then DEL key actually deletes
4249 charecters. If it is nil, then the cursor just moves backwards, similarly
4250 to Vi. The variable `viper-ex-style-editing', if t, doesn't let the
4251 cursor move past the beginning of line."
4253 (cond (viper-delete-backwards-in-replace
4255 ;; don't put on kill ring
4256 (delete-backward-char 1 nil))
4257 (viper-ex-style-editing
4262 ;; don't put on kill ring
4263 (delete-backward-char 1 nil))))
4264 (viper-ex-style-editing
4269 (backward-char 1))))
4275 (defun viper-join-lines (arg)
4276 "Join this line to next, if ARG is nil. Otherwise, join ARG lines."
4278 (let ((val (viper-P-val arg)))
4279 (viper-set-destructive-command
4280 (list 'viper-join-lines val nil nil nil nil))
4281 (viper-loop (if (null val) 1 (1- val))
4286 (delete-region (point) (1- (point)))
4288 ;; fixup-whitespace sometimes does not leave space
4289 ;; between objects, so we insert it as in Vi
4290 (or (looking-at " ")
4298 (defun viper-change (beg end)
4299 (if (markerp beg) (setq beg (marker-position beg)))
4300 (if (markerp end) (setq end (marker-position end)))
4301 ;; beg is sometimes (mark t), which may be nil
4302 (or beg (setq beg end))
4304 (viper-set-complex-command-for-undo)
4305 (if viper-use-register
4307 (copy-to-register viper-use-register beg end nil)
4308 (setq viper-use-register nil)))
4309 (viper-set-replace-overlay beg end)
4310 (setq last-command nil) ; separate repl text from prev kills
4312 (if (= (viper-replace-start) (point-max))
4313 (error "End of buffer"))
4315 (setq viper-last-replace-region
4316 (buffer-substring (viper-replace-start)
4317 (viper-replace-end)))
4319 ;; protect against error while inserting "@" and other disasters
4320 ;; (e.g., read-only buff)
4321 (condition-case conds
4322 (if (or viper-allow-multiline-replace-regions
4323 (viper-same-line (viper-replace-start)
4324 (viper-replace-end)))
4326 ;; tabs cause problems in replace, so untabify
4327 (goto-char (viper-replace-end))
4328 (insert-before-markers "@") ; put placeholder after the TAB
4329 (untabify (viper-replace-start) (point))
4330 ;; del @, don't put on kill ring
4331 (delete-backward-char 1)
4333 (viper-set-replace-overlay-glyphs
4334 viper-replace-region-start-delimiter
4335 viper-replace-region-end-delimiter)
4336 ;; this move takes care of the last posn in the overlay, which
4337 ;; has to be shifted because of insert. We can't simply insert
4338 ;; "$" before-markers because then overlay-start will shift the
4339 ;; beginning of the overlay in case we are replacing a single
4340 ;; character. This fixes the bug with `s' and `cl' commands.
4341 (viper-move-replace-overlay (viper-replace-start) (point))
4342 (goto-char (viper-replace-start))
4343 (viper-change-state-to-replace t))
4344 (kill-region (viper-replace-start)
4345 (viper-replace-end))
4346 (viper-hide-replace-overlay)
4347 (viper-change-state-to-insert))
4348 (error ;; make sure that the overlay doesn't stay.
4349 ;; go back to the original point
4350 (goto-char (viper-replace-start))
4351 (viper-hide-replace-overlay)
4352 (viper-message-conditions conds))))
4355 (defun viper-change-subr (beg end)
4356 ;; beg is sometimes (mark t), which may be nil
4357 (or beg (setq beg end))
4358 (if viper-use-register
4360 (copy-to-register viper-use-register beg end nil)
4361 (setq viper-use-register nil)))
4362 (kill-region beg end)
4363 (setq this-command 'viper-change)
4364 (viper-yank-last-insertion))
4366 (defun viper-toggle-case (arg)
4367 "Toggle character case."
4369 (let ((val (viper-p-val arg)) (c))
4370 (viper-set-destructive-command
4371 (list 'viper-toggle-case val nil nil nil nil))
4373 (setq c (following-char))
4375 (if (eq c (upcase c))
4376 (insert-char (downcase c) 1)
4377 (insert-char (upcase c) 1))
4378 (if (eolp) (backward-char 1))
4379 (setq val (1- val)))))
4384 (defun viper-query-replace ()
4386 If a null string is suplied as the string to be replaced,
4387 the query replace mode will toggle between string replace
4388 and regexp replace."
4391 (setq str (viper-read-string-with-history
4392 (if viper-re-query-replace "Query replace regexp: "
4395 'viper-replace1-history
4396 (car viper-replace1-history) ; default
4398 (if (string= str "")
4400 (setq viper-re-query-replace (not viper-re-query-replace))
4401 (message "Query replace mode changed to %s"
4402 (if viper-re-query-replace "regexp replace"
4404 (if viper-re-query-replace
4405 (query-replace-regexp
4407 (viper-read-string-with-history
4408 (format "Query replace regexp `%s' with: " str)
4410 'viper-replace1-history
4411 (car viper-replace1-history) ; default
4415 (viper-read-string-with-history
4416 (format "Query replace `%s' with: " str)
4418 'viper-replace1-history
4419 (car viper-replace1-history) ; default
4425 (defun viper-mark-beginning-of-buffer ()
4426 "Mark beginning of buffer."
4429 (goto-char (point-min))
4430 (exchange-point-and-mark)
4431 (message "Mark set at the beginning of buffer"))
4433 (defun viper-mark-end-of-buffer ()
4434 "Mark end of buffer."
4437 (goto-char (point-max))
4438 (exchange-point-and-mark)
4439 (message "Mark set at the end of buffer"))
4441 (defun viper-mark-point ()
4442 "Set mark at point of buffer."
4444 (let ((char (read-char)))
4445 (cond ((and (<= ?a char) (<= char ?z))
4446 (point-to-register (viper-int-to-char (1+ (- char ?a)))))
4447 ((viper= char ?<) (viper-mark-beginning-of-buffer))
4448 ((viper= char ?>) (viper-mark-end-of-buffer))
4449 ((viper= char ?.) (viper-set-mark-if-necessary))
4450 ((viper= char ?,) (viper-cycle-through-mark-ring))
4451 ((viper= char ?^) (push-mark viper-saved-mark t t))
4452 ((viper= char ?D) (mark-defun))
4453 (t (error "Viper bell"))
4456 ;; Algorithm: If first invocation of this command save mark on ring, goto
4457 ;; mark, M0, and pop the most recent elt from the mark ring into mark,
4458 ;; making it into the new mark, M1.
4459 ;; Push this mark back and set mark to the original point position, p1.
4460 ;; So, if you hit '' or `` then you can return to p1.
4462 ;; If repeated command, pop top elt from the ring into mark and
4463 ;; jump there. This forgets the position, p1, and puts M1 back into mark.
4464 ;; Then we save the current pos, which is M0, jump to M1 and pop M2 from
4465 ;; the ring into mark. Push M2 back on the ring and set mark to M0.
4467 (defun viper-cycle-through-mark-ring ()
4468 "Visit previous locations on the mark ring.
4469 One can use `` and '' to temporarily jump 1 step back."
4470 (let* ((sv-pt (point)))
4471 ;; if repeated `m,' command, pop the previously saved mark.
4472 ;; Prev saved mark is actually prev saved point. It is used if the
4473 ;; user types `` or '' and is discarded
4474 ;; from the mark ring by the next `m,' command.
4475 ;; In any case, go to the previous or previously saved mark.
4476 ;; Then push the current mark (popped off the ring) and set current
4477 ;; point to be the mark. Current pt as mark is discarded by the next
4479 (if (eq last-command 'viper-cycle-through-mark-ring)
4481 ;; save current mark if the first iteration
4482 (setq mark-ring (delete (viper-mark-marker) mark-ring))
4484 (push-mark (mark t) t)) )
4486 (set-mark-command 1)
4487 ;; don't duplicate mark on the ring
4488 (setq mark-ring (delete (viper-mark-marker) mark-ring))
4490 (viper-deactivate-mark)
4491 (setq this-command 'viper-cycle-through-mark-ring)
4495 (defun viper-goto-mark (arg)
4498 (let ((char (read-char))
4499 (com (viper-getcom arg)))
4500 (viper-goto-mark-subr char com nil)))
4502 (defun viper-goto-mark-and-skip-white (arg)
4503 "Go to mark and skip to first non-white character on line."
4505 (let ((char (read-char))
4506 (com (viper-getCom arg)))
4507 (viper-goto-mark-subr char com t)))
4509 (defun viper-goto-mark-subr (char com skip-white)
4512 (error "Empty buffer")
4514 (cond ((viper-valid-register char '(letter))
4515 (let* ((buff (current-buffer))
4516 (reg (viper-int-to-char (1+ (- char ?a))))
4517 (text-marker (get-register reg)))
4518 ;; If marker points to file that had markers set (and those markers
4519 ;; were saved (as e.g., in session.el), then restore those markers
4520 (if (and (consp text-marker)
4521 (eq (car text-marker) 'file-query)
4522 (or (find-buffer-visiting (nth 1 text-marker))
4523 (y-or-n-p (format "Visit file %s again? "
4524 (nth 1 text-marker)))))
4526 (find-file (nth 1 text-marker))
4527 (when (and (<= (nth 2 text-marker) (point-max))
4528 (<= (point-min) (nth 2 text-marker)))
4529 (setq text-marker (copy-marker (nth 2 text-marker)))
4530 (set-register reg text-marker))))
4531 (if com (viper-move-marker-locally 'viper-com-point (point)))
4532 (if (not (viper-valid-marker text-marker))
4533 (error viper-EmptyTextmarker char))
4534 (if (and (viper-same-line (point) viper-last-jump)
4535 (= (point) viper-last-jump-ignore))
4536 (push-mark viper-last-jump t)
4537 (push-mark nil t)) ; no msg
4538 (viper-register-to-point reg)
4539 (setq viper-last-jump (point-marker))
4541 (back-to-indentation)
4542 (setq viper-last-jump-ignore (point))))
4544 (if (equal buff (current-buffer))
4545 (viper-execute-com (if skip-white
4546 'viper-goto-mark-and-skip-white
4549 (switch-to-buffer buff)
4550 (goto-char viper-com-point)
4551 (viper-change-state-to-vi)
4552 (error "Viper bell")))))
4553 ((and (not skip-white) (viper= char ?`))
4554 (if com (viper-move-marker-locally 'viper-com-point (point)))
4555 (if (and (viper-same-line (point) viper-last-jump)
4556 (= (point) viper-last-jump-ignore))
4557 (goto-char viper-last-jump))
4558 (if (null (mark t)) (error "Mark is not set in this buffer"))
4559 (if (= (point) (mark t)) (pop-mark))
4560 (exchange-point-and-mark)
4561 (setq viper-last-jump (point-marker)
4562 viper-last-jump-ignore 0)
4563 (if com (viper-execute-com 'viper-goto-mark nil com)))
4564 ((and skip-white (viper= char ?'))
4565 (if com (viper-move-marker-locally 'viper-com-point (point)))
4566 (if (and (viper-same-line (point) viper-last-jump)
4567 (= (point) viper-last-jump-ignore))
4568 (goto-char viper-last-jump))
4569 (if (= (point) (mark t)) (pop-mark))
4570 (exchange-point-and-mark)
4571 (setq viper-last-jump (point))
4572 (back-to-indentation)
4573 (setq viper-last-jump-ignore (point))
4574 (if com (viper-execute-com 'viper-goto-mark-and-skip-white nil com)))
4575 (t (error viper-InvalidTextmarker char))))
4577 (defun viper-insert-tab ()
4581 (defun viper-exchange-point-and-mark ()
4583 (exchange-point-and-mark)
4584 (back-to-indentation))
4586 ;; Input Mode Indentation
4588 ;; Returns t, if the string before point matches the regexp STR.
4589 (defsubst viper-looking-back (str)
4590 (and (save-excursion (re-search-backward str nil t))
4591 (= (point) (match-end 0))))
4594 (defun viper-forward-indent ()
4595 "Indent forward -- `C-t' in Vi."
4598 (indent-to (+ (current-column) viper-shift-width)))
4600 (defun viper-backward-indent ()
4601 "Backtab, C-d in VI"
4604 (let ((p (point)) (c (current-column)) bol (indent t))
4605 (if (viper-looking-back "[0^]")
4607 (if (eq ?^ (preceding-char))
4608 (setq viper-preserve-indent t))
4609 (delete-backward-char 1)
4615 (if (re-search-backward "[^ \t]" bol 1) (forward-char))
4616 (delete-region (point) p)
4618 (indent-to (- c viper-shift-width)))
4619 (if (or (bolp) (viper-looking-back "[^ \t]"))
4620 (setq viper-cted nil)))))
4623 (defun viper-indent-line (col)
4624 (if viper-auto-indent
4627 (if (and viper-electric-mode
4628 (not (memq major-mode '(fundamental-mode
4630 paragraph-indent-text-mode))))
4631 (indent-according-to-mode)
4635 (defun viper-autoindent ()
4636 "Auto Indentation, Vi-style."
4638 (let ((col (current-indentation)))
4639 (if abbrev-mode (expand-abbrev))
4640 (if viper-preserve-indent
4641 (setq viper-preserve-indent nil)
4642 (setq viper-current-indent col))
4643 ;; don't leave whitespace lines around
4644 (if (memq last-command
4646 viper-open-line viper-Open-line
4647 viper-replace-state-exit-cmd))
4648 (indent-to-left-margin))
4649 ;; use \n instead of newline, or else <Return> will move the insert point
4652 (viper-indent-line viper-current-indent)
4656 ;; Viewing registers
4658 (defun viper-ket-function (arg)
4659 "Function called by \], the ket. View registers and call \]\]."
4661 (let ((reg (read-char)))
4662 (cond ((viper-valid-register reg '(letter Letter))
4663 (view-register (downcase reg)))
4664 ((viper-valid-register reg '(digit))
4665 (let ((text (current-kill (- reg ?1) 'do-not-rotate)))
4666 (with-output-to-temp-buffer " *viper-info*"
4667 (princ (format "Register %c contains the string:\n" reg))
4671 (viper-next-heading arg))
4673 viper-InvalidRegister reg)))))
4675 (defun viper-brac-function (arg)
4676 "Function called by \[, the brac. View textmarkers and call \[\["
4678 (let ((reg (read-char)))
4679 (cond ((viper= ?\[ reg)
4680 (viper-prev-heading arg))
4682 (viper-heading-end arg))
4683 ((viper-valid-register reg '(letter))
4684 (let* ((val (get-register (viper-int-to-char (1+ (- reg ?a)))))
4685 (buf (if (not (markerp val))
4686 (error viper-EmptyTextmarker reg)
4687 (marker-buffer val)))
4688 (pos (marker-position val))
4689 line-no text (s pos) (e pos))
4690 (with-output-to-temp-buffer " *viper-info*"
4695 (setq line-no (1+ (count-lines (point-min) val)))
4698 (if (re-search-backward "[^ \t]" nil t)
4704 (if (re-search-forward "[^ \t]" nil t)
4708 (setq text (buffer-substring s e))
4709 (setq text (format "%s<%c>%s"
4710 (substring text 0 (- pos s))
4711 reg (substring text (- pos s)))))
4714 "Textmarker `%c' is in buffer `%s' at line %d.\n"
4715 reg (buffer-name buf) line-no))
4716 (princ (format "Here is some text around %c:\n\n %s"
4718 (princ (format viper-EmptyTextmarker reg))))
4720 (t (error viper-InvalidTextmarker reg)))))
4724 (defun viper-delete-backward-word (arg)
4725 "Delete previous word."
4730 (delete-region (point) (mark t))
4735 ;; Get viper standard value of SYMBOL. If symbol is customized, get its
4736 ;; standard value. Otherwise, get the value saved in the alist STORAGE. If
4737 ;; STORAGE is nil, use viper-saved-user-settings.
4738 (defun viper-standard-value (symbol &optional storage)
4739 (or (eval (car (get symbol 'customized-value)))
4740 (eval (car (get symbol 'saved-value)))
4741 (nth 1 (assoc symbol (or storage viper-saved-user-settings)))))
4745 (defun viper-set-expert-level (&optional dont-change-unless)
4746 "Sets the expert level for a Viper user.
4747 Can be called interactively to change (temporarily or permanently) the
4748 current expert level.
4750 The optional argument DONT-CHANGE-UNLESS, if not nil, says that
4751 the level should not be changed, unless its current value is
4752 meaningless (i.e., not one of 1,2,3,4,5).
4754 User level determines the setting of Viper variables that are most
4755 sensitive for VI-style look-and-feel."
4759 (if (not (natnump viper-expert-level)) (setq viper-expert-level 0))
4761 (save-window-excursion
4762 (delete-other-windows)
4763 ;; if 0 < viper-expert-level < viper-max-expert-level
4764 ;; & dont-change-unless = t -- use it; else ask
4765 (viper-ask-level dont-change-unless))
4767 (setq viper-always t
4768 viper-ex-style-motion t
4769 viper-ex-style-editing t
4770 viper-want-ctl-h-help nil)
4772 (cond ((eq viper-expert-level 1) ; novice or beginner
4773 (global-set-key ; in emacs-state
4775 (if (viper-window-display-p) 'viper-iconify 'suspend-emacs))
4776 (setq viper-no-multiple-ESC t
4778 viper-vi-style-in-minibuffer t
4779 viper-search-wrap-around t
4780 viper-electric-mode nil
4781 viper-want-emacs-keys-in-vi nil
4782 viper-want-emacs-keys-in-insert nil))
4784 ((and (> viper-expert-level 1) (< viper-expert-level 5))
4785 ;; intermediate to guru
4786 (setq viper-no-multiple-ESC (if (viper-window-display-p)
4788 viper-electric-mode t
4789 viper-want-emacs-keys-in-vi t
4790 viper-want-emacs-keys-in-insert (> viper-expert-level 2))
4792 (if (eq viper-expert-level 4) ; respect user's ex-style motion
4793 ; and viper-no-multiple-ESC
4796 viper-ex-style-editing
4797 (viper-standard-value 'viper-ex-style-editing)
4798 viper-ex-style-motion
4799 (viper-standard-value 'viper-ex-style-motion))
4800 (setq viper-ex-style-motion
4801 (viper-standard-value 'viper-ex-style-motion)
4802 viper-ex-style-editing
4803 (viper-standard-value 'viper-ex-style-editing)
4805 (viper-standard-value 'viper-re-search)
4806 viper-no-multiple-ESC
4807 (viper-standard-value 'viper-no-multiple-ESC)))))
4810 ;; Ideally, if 5 is selected, a buffer should pop up to let the
4811 ;; user toggle the values of variables.
4812 (t (setq-default viper-ex-style-editing
4813 (viper-standard-value 'viper-ex-style-editing)
4814 viper-ex-style-motion
4815 (viper-standard-value 'viper-ex-style-motion))
4816 (setq viper-want-ctl-h-help
4817 (viper-standard-value 'viper-want-ctl-h-help)
4819 (viper-standard-value 'viper-always)
4820 viper-no-multiple-ESC
4821 (viper-standard-value 'viper-no-multiple-ESC)
4822 viper-ex-style-motion
4823 (viper-standard-value 'viper-ex-style-motion)
4824 viper-ex-style-editing
4825 (viper-standard-value 'viper-ex-style-editing)
4827 (viper-standard-value 'viper-re-search)
4829 (viper-standard-value 'viper-electric-mode)
4830 viper-want-emacs-keys-in-vi
4831 (viper-standard-value 'viper-want-emacs-keys-in-vi)
4832 viper-want-emacs-keys-in-insert
4833 (viper-standard-value 'viper-want-emacs-keys-in-insert))))
4835 (viper-set-mode-vars-for viper-current-state)
4836 (if (or viper-always
4837 (and (> viper-expert-level 0) (> 5 viper-expert-level)))
4841 ;; Ask user expert level.
4842 (defun viper-ask-level (dont-change-unless)
4843 (let ((ask-buffer " *viper-ask-level*")
4844 level-changed repeated)
4845 (save-window-excursion
4846 (switch-to-buffer ask-buffer)
4848 (while (or (> viper-expert-level viper-max-expert-level)
4849 (< viper-expert-level 1)
4850 (null dont-change-unless))
4854 (message "Invalid user level")
4857 (setq dont-change-unless t
4860 Please specify your level of familiarity with the venomous VI PERil
4861 \(and the VI Plan for Emacs Rescue).
4862 You can change it at any time by typing `M-x viper-set-expert-level RET'
4864 1 -- BEGINNER: Almost all Emacs features are suppressed.
4865 Feels almost like straight Vi. File name completion and
4866 command history in the minibuffer are thrown in as a bonus.
4867 To use Emacs productively, you must reach level 3 or higher.
4868 2 -- MASTER: C-c now has its standard Emacs meaning in Vi command state,
4869 so most Emacs commands can be used when Viper is in Vi state.
4870 Good progress---you are well on the way to level 3!
4871 3 -- GRAND MASTER: Like 2, but most Emacs commands are available also
4872 in Viper's insert state.
4873 4 -- GURU: Like 3, but user settings are respected for viper-no-multiple-ESC,
4874 viper-ex-style-motion, viper-ex-style-editing, and
4875 viper-re-search variables. Adjust these settings to your taste.
4876 5 -- WIZARD: Like 4, but user settings are also respected for viper-always,
4877 viper-electric-mode, viper-want-ctl-h-help, viper-want-emacs-keys-in-vi,
4878 and viper-want-emacs-keys-in-insert. Adjust these to your taste.
4880 Please, specify your level now: ")
4882 (setq viper-expert-level (- (viper-read-char-exclusive) ?0))
4885 ;; tell the user if level was changed
4889 (format "\n\n\n\n\n\t\tYou have selected user level %d"
4890 viper-expert-level))
4891 (if (y-or-n-p "Do you wish to make this change permanent? ")
4892 ;; save the setting for viper-expert-level
4895 (format "Saving user level %d ..." viper-expert-level)
4896 viper-custom-file-name))
4898 (bury-buffer) ; remove ask-buffer from screen
4908 ;; if ENFORCE-BUFFER is not nil, error if CHAR is a marker in another buffer
4909 (defun viper-register-to-point (char &optional enforce-buffer)
4910 "Like jump-to-register, but switches to another buffer in another window."
4911 (interactive "cViper register to point: ")
4912 (let ((val (get-register char)))
4914 ((and (fboundp 'frame-configuration-p)
4915 (frame-configuration-p val))
4916 (set-frame-configuration val))
4917 ((window-configuration-p val)
4918 (set-window-configuration val))
4919 ((viper-valid-marker val)
4920 (if (and enforce-buffer
4921 (not (equal (current-buffer) (marker-buffer val))))
4922 (error (concat viper-EmptyTextmarker " in this buffer")
4923 (viper-int-to-char (1- (+ char ?a)))))
4924 (pop-to-buffer (marker-buffer val))
4926 ((and (consp val) (eq (car val) 'file))
4927 (find-file (cdr val)))
4929 (error viper-EmptyTextmarker (viper-int-to-char (1- (+ char ?a))))))))
4932 (defun viper-save-kill-buffer ()
4933 "Save then kill current buffer."
4935 (if (< viper-expert-level 2)
4936 (save-buffers-kill-emacs)
4938 (kill-buffer (current-buffer))))
4944 (defun viper-submit-report ()
4945 "Submit bug report on Viper."
4947 (let ((reporter-prompt-for-summary-p t)
4948 (viper-device-type (viper-device-type))
4949 color-display-p frame-parameters
4950 minibuffer-emacs-face minibuffer-vi-face minibuffer-insert-face
4951 varlist salutation window-config)
4953 ;; If mode info is needed, add variable to `let' and then set it below,
4954 ;; like we did with color-display-p.
4955 (setq color-display-p (if (viper-window-display-p)
4956 (viper-color-display-p)
4958 minibuffer-vi-face (if (viper-has-face-support-p)
4959 (viper-get-face viper-minibuffer-vi-face)
4961 minibuffer-insert-face (if (viper-has-face-support-p)
4963 viper-minibuffer-insert-face)
4965 minibuffer-emacs-face (if (viper-has-face-support-p)
4967 viper-minibuffer-emacs-face)
4969 frame-parameters (if (fboundp 'frame-parameters)
4970 (frame-parameters (selected-frame))))
4972 (setq varlist (list 'viper-vi-minibuffer-minor-mode
4973 'viper-insert-minibuffer-minor-mode
4974 'viper-vi-intercept-minor-mode
4975 'viper-vi-local-user-minor-mode
4976 'viper-vi-kbd-minor-mode
4977 'viper-vi-global-user-minor-mode
4978 'viper-vi-state-modifier-minor-mode
4979 'viper-vi-diehard-minor-mode
4980 'viper-vi-basic-minor-mode
4981 'viper-replace-minor-mode
4982 'viper-insert-intercept-minor-mode
4983 'viper-insert-local-user-minor-mode
4984 'viper-insert-kbd-minor-mode
4985 'viper-insert-global-user-minor-mode
4986 'viper-insert-state-modifier-minor-mode
4987 'viper-insert-diehard-minor-mode
4988 'viper-insert-basic-minor-mode
4989 'viper-emacs-intercept-minor-mode
4990 'viper-emacs-local-user-minor-mode
4991 'viper-emacs-kbd-minor-mode
4992 'viper-emacs-global-user-minor-mode
4993 'viper-emacs-state-modifier-minor-mode
4994 'viper-automatic-iso-accents
4995 'viper-special-input-method
4996 'viper-want-emacs-keys-in-insert
4997 'viper-want-emacs-keys-in-vi
4998 'viper-keep-point-on-undo
4999 'viper-no-multiple-ESC
5000 'viper-electric-mode
5002 'viper-want-ctl-h-help
5003 'viper-ex-style-editing
5004 'viper-delete-backwards-in-replace
5005 'viper-vi-style-in-minibuffer
5006 'viper-vi-state-hook
5007 'viper-insert-state-hook
5008 'viper-replace-state-hook
5009 'viper-emacs-state-hook
5010 'ex-cycle-other-window
5011 'ex-cycle-through-non-files
5018 'minibuffer-insert-face
5019 'minibuffer-emacs-face
5022 Congratulations! You may have unearthed a bug in Viper!
5023 Please mail a concise, accurate summary of the problem to the address above.
5025 -------------------------------------------------------------------")
5026 (setq window-config (current-window-configuration))
5027 (with-output-to-temp-buffer " *viper-info*"
5028 (switch-to-buffer " *viper-info*")
5029 (delete-other-windows)
5031 PLEASE FOLLOW THESE PROCEDURES
5032 ------------------------------
5034 Before reporting a bug, please verify that it is related to Viper, and is
5035 not cause by other packages you are using.
5037 Don't report compilation warnings, unless you are certain that there is a
5038 problem. These warnings are normal and unavoidable.
5040 Please note that users should not modify variables and keymaps other than
5041 those advertised in the manual. Such `customization' is likely to crash
5042 Viper, as it would any other improperly customized Emacs package.
5044 If you are reporting an error message received while executing one of the
5045 Viper commands, type:
5047 M-x set-variable <Return> debug-on-error <Return> t <Return>
5049 Then reproduce the error. The above command will cause Emacs to produce a
5050 back trace of the execution that leads to the error. Please include this
5051 trace in your bug report.
5053 If you believe that one of Viper's commands goes into an infinite loop
5054 \(e.g., Emacs freezes\), type:
5056 M-x set-variable <Return> debug-on-quit <Return> t <Return>
5058 Then reproduce the problem. Wait for a few seconds, then type C-g to abort
5059 the current command. Include the resulting back trace in the bug report.
5061 Mail anyway (y or n)? ")
5062 (if (y-or-n-p "Mail anyway? ")
5064 (set-window-configuration window-config)
5065 (error "Bug report aborted")))
5068 (set-window-configuration window-config)
5070 (reporter-submit-bug-report "kifer@cs.stonybrook.edu"
5073 nil 'delete-other-windows
5080 ;; arch-tag: 739a6450-5fda-44d0-88b0-325053d888c2
5081 ;;; viper-cmd.el ends here