1 ;;; viper-cmd.el --- Vi command support for Viper
2 ;; Copyright (C) 1997 Free Software Foundation, Inc.
4 ;; This file is part of GNU Emacs.
6 ;; GNU Emacs is free software; you can redistribute it and/or modify
7 ;; it under the terms of the GNU General Public License as published by
8 ;; the Free Software Foundation; either version 2, or (at your option)
11 ;; GNU Emacs is distributed in the hope that it will be useful,
12 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
13 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 ;; GNU General Public License for more details.
16 ;; You should have received a copy of the GNU General Public License
17 ;; along with GNU Emacs; see the file COPYING. If not, write to the
18 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 ;; Boston, MA 02111-1307, USA.
27 (defvar viper-minibuffer-current-face
)
28 (defvar viper-minibuffer-insert-face
)
29 (defvar viper-minibuffer-vi-face
)
30 (defvar viper-minibuffer-emacs-face
)
32 (defvar viper-mode-string
)
33 (defvar viper-custom-file-name
)
34 (defvar iso-accents-mode
)
36 (defvar quail-current-str
)
37 (defvar zmacs-region-stays
)
38 (defvar mark-even-if-inactive
)
40 ;; loading happens only in non-interactive compilation
41 ;; in order to spare non-viperized emacs from being viperized
44 (let ((load-path (cons (expand-file-name ".") load-path
)))
45 (or (featurep 'viper-util
)
46 (load "viper-util.el" nil nil
'nosuffix
))
47 (or (featurep 'viper-keym
)
48 (load "viper-keym.el" nil nil
'nosuffix
))
49 (or (featurep 'viper-mous
)
50 (load "viper-mous.el" nil nil
'nosuffix
))
51 (or (featurep 'viper-macs
)
52 (load "viper-macs.el" nil nil
'nosuffix
))
53 (or (featurep 'viper-ex
)
54 (load "viper-ex.el" nil nil
'nosuffix
))
69 ;; These test functions are shamelessly lifted from vip 4.4.2 by Aamod Sane
71 ;; generate test functions
72 ;; given symbol foo, foo-p is the test function, foos is the set of
74 ;; (macroexpand '(viper-test-com-defun foo))
75 ;; (defun foo-p (com) (consp (memq (if (< com 0) (- com) com) foos)))
77 (defmacro viper-test-com-defun
(name)
78 (let* ((snm (symbol-name name
))
79 (nm-p (intern (concat snm
"-p")))
80 (nms (intern (concat snm
"s"))))
81 (` (defun (, nm-p
) (com)
82 (consp (memq (if (and (viper-characterp com
) (< com
0))
83 (- com
) com
) (, nms
)))))))
85 ;; Variables for defining VI commands
87 ;; Modifying commands that can be prefixes to movement commands
88 (defconst viper-prefix-commands
'(?c ?d ?y ?
! ?
= ?
# ?
< ?
> ?
\"))
89 ;; define viper-prefix-command-p
90 (viper-test-com-defun viper-prefix-command)
92 ;; Commands that are pairs eg. dd. r and R here are a hack
93 (defconst viper-charpair-commands
'(?c ?d ?y ?
! ?
= ?
< ?
> ?r ?R
))
94 ;; define viper-charpair-command-p
95 (viper-test-com-defun viper-charpair-command)
97 (defconst viper-movement-commands
'(?b ?B ?e ?E ?f ?F ?G ?h ?H ?j ?k ?l
98 ?H ?M ?L ?n ?t ?T ?w ?W ?$ ?%
99 ?^ ?
( ?
) ?- ?
+ ?| ?
{ ?
} ?
[ ?
] ?
' ?
`
100 ?\
; ?, ?0 ?? ?/ ?\C-m ?\
105 ;; define viper-movement-command-p
106 (viper-test-com-defun viper-movement-command)
109 (defconst viper-digit-commands
'(?
1 ?
2 ?
3 ?
4 ?
5 ?
6 ?
7 ?
8 ?
9))
111 ;; define viper-digit-command-p
112 (viper-test-com-defun viper-digit-command)
114 ;; Commands that can be repeated by . (dotted)
115 (defconst viper-dotable-commands
'(?c ?d ?C ?s ?S ?D ?
> ?
<))
116 ;; define viper-dotable-command-p
117 (viper-test-com-defun viper-dotable-command)
119 ;; Commands that can follow a #
120 (defconst viper-hash-commands
'(?c ?C ?g ?q ?s
))
121 ;; define viper-hash-command-p
122 (viper-test-com-defun viper-hash-command)
124 ;; Commands that may have registers as prefix
125 (defconst viper-regsuffix-commands
'(?d ?y ?Y ?D ?p ?P ?x ?X
))
126 ;; define viper-regsuffix-command-p
127 (viper-test-com-defun viper-regsuffix-command)
129 (defconst viper-vi-commands
(append viper-movement-commands
131 viper-dotable-commands
132 viper-charpair-commands
134 viper-prefix-commands
135 viper-regsuffix-commands
)
136 "The list of all commands in Vi-state.")
137 ;; define viper-vi-command-p
138 (viper-test-com-defun viper-vi-command)
145 ;; Runs viper-after-change-functions inside after-change-functions
146 (defun viper-after-change-sentinel (beg end len
)
147 (run-hook-with-args 'viper-after-change-functions beg end len
))
149 ;; Runs viper-before-change-functions inside before-change-functions
150 (defun viper-before-change-sentinel (beg end
)
151 (run-hook-with-args 'viper-before-change-functions beg end
))
153 (defsubst viper-post-command-sentinel
()
154 (run-hooks 'viper-post-command-hooks
))
156 (defsubst viper-pre-command-sentinel
()
157 (run-hooks 'viper-pre-command-hooks
))
159 ;; Needed so that Viper will be able to figure the last inserted
160 ;; chunk of text with reasonable accuracy.
161 (defsubst viper-insert-state-post-command-sentinel
()
162 (if (and (memq viper-current-state
'(insert-state replace-state
))
164 (>= (point) viper-insert-point
))
165 (setq viper-last-posn-while-in-insert-state
(point-marker)))
166 (if (eq viper-current-state
'insert-state
)
168 (or (stringp viper-saved-cursor-color
)
169 (string= (viper-get-cursor-color) viper-insert-state-cursor-color
)
170 (setq viper-saved-cursor-color
(viper-get-cursor-color)))
171 (if (stringp viper-saved-cursor-color
)
172 (viper-change-cursor-color viper-insert-state-cursor-color
))
174 (if (and (eq this-command
'dabbrev-expand
)
175 (integerp viper-pre-command-point
)
176 (markerp viper-insert-point
)
177 (marker-position viper-insert-point
)
178 (> viper-insert-point viper-pre-command-point
))
179 (viper-move-marker-locally viper-insert-point viper-pre-command-point
))
182 (defsubst viper-insert-state-pre-command-sentinel
()
183 (or (memq this-command
'(self-insert-command))
184 (memq (viper-event-key last-command-event
)
185 '(up down left right
(meta f
) (meta b
)
186 (control n
) (control p
) (control f
) (control b
)))
187 (viper-restore-cursor-color-after-insert))
188 (if (and (eq this-command
'dabbrev-expand
)
189 (markerp viper-insert-point
)
190 (marker-position viper-insert-point
))
191 (setq viper-pre-command-point
(marker-position viper-insert-point
))))
193 (defsubst viper-R-state-post-command-sentinel
()
194 ;; Restoring cursor color is needed despite
195 ;; viper-replace-state-pre-command-sentinel: When you jump to another buffer
196 ;; in another frame, the pre-command hook won't change cursor color to
197 ;; default in that other frame. So, if the second frame cursor was red and
198 ;; we set the point outside the replacement region, then the cursor color
199 ;; will remain red. Restoring the default, below, prevents this.
200 (if (and (<= (viper-replace-start) (point))
201 (<= (point) (viper-replace-end)))
202 (viper-change-cursor-color viper-replace-overlay-cursor-color
)
203 (viper-restore-cursor-color-after-replace)
206 ;; to speed up, don't change cursor color before self-insert
207 ;; and common move commands
208 (defsubst viper-replace-state-pre-command-sentinel
()
209 (or (memq this-command
'(self-insert-command))
210 (memq (viper-event-key last-command-event
)
211 '(up down left right
(meta f
) (meta b
)
212 (control n
) (control p
) (control f
) (control b
)))
213 (viper-restore-cursor-color-after-replace)))
215 (defun viper-replace-state-post-command-sentinel ()
216 ;; Restoring cursor color is needed despite
217 ;; viper-replace-state-pre-command-sentinel: When one jumps to another buffer
218 ;; in another frame, the pre-command hook won't change cursor color to
219 ;; default in that other frame. So, if the second frame cursor was red and
220 ;; we set the point outside the replacement region, then the cursor color
221 ;; will remain red. Restoring the default, below, fixes this problem.
223 ;; We optimize for self-insert-command's here, since they either don't change
224 ;; cursor color or, if they terminate replace mode, the color will be changed
225 ;; in viper-finish-change
226 (or (memq this-command
'(self-insert-command))
227 (viper-restore-cursor-color-after-replace))
229 ((eq viper-current-state
'replace-state
)
230 ;; delete characters to compensate for inserted chars.
231 (let ((replace-boundary (viper-replace-end)))
233 (goto-char viper-last-posn-in-replace-region
)
234 (viper-trim-replace-chars-to-delete-if-necessary)
235 (delete-char viper-replace-chars-to-delete
)
236 (setq viper-replace-chars-to-delete
0)
237 ;; terminate replace mode if reached replace limit
238 (if (= viper-last-posn-in-replace-region
(viper-replace-end))
239 (viper-finish-change)))
241 (if (viper-pos-within-region
242 (point) (viper-replace-start) replace-boundary
)
244 ;; the state may have changed in viper-finish-change above
245 (if (eq viper-current-state
'replace-state
)
246 (viper-change-cursor-color viper-replace-overlay-cursor-color
))
247 (setq viper-last-posn-in-replace-region
(point-marker))))
249 ;; terminate replace mode if changed Viper states.
250 (t (viper-finish-change))))
255 ;; Change state to NEW-STATE---either emacs-state, vi-state, or insert-state.
256 (defun viper-change-state (new-state)
257 ;; Keep viper-post/pre-command-hooks fresh.
258 ;; We remove then add viper-post/pre-command-sentinel since it is very
259 ;; desirable that viper-pre-command-sentinel is the last hook and
260 ;; viper-post-command-sentinel is the first hook.
262 (make-local-hook 'viper-after-change-functions
)
263 (make-local-hook 'viper-before-change-functions
)
264 (make-local-hook 'viper-post-command-hooks
)
265 (make-local-hook 'viper-pre-command-hooks
)
267 (remove-hook 'post-command-hook
'viper-post-command-sentinel
)
268 (add-hook 'post-command-hook
'viper-post-command-sentinel
)
269 (remove-hook 'pre-command-hook
'viper-pre-command-sentinel
)
270 (add-hook 'pre-command-hook
'viper-pre-command-sentinel t
)
271 ;; These hooks will be added back if switching to insert/replace mode
272 (remove-hook 'viper-post-command-hooks
273 'viper-insert-state-post-command-sentinel
'local
)
274 (remove-hook 'viper-pre-command-hooks
275 'viper-insert-state-pre-command-sentinel
'local
)
276 (setq viper-intermediate-command nil
)
277 (cond ((eq new-state
'vi-state
)
278 (cond ((member viper-current-state
'(insert-state replace-state
))
280 ;; move viper-last-posn-while-in-insert-state
281 ;; This is a normal hook that is executed in insert/replace
282 ;; states after each command. In Vi/Emacs state, it does
283 ;; nothing. We need to execute it here to make sure that
284 ;; the last posn was recorded when we hit ESC.
285 ;; It may be left unrecorded if the last thing done in
286 ;; insert/repl state was dabbrev-expansion or abbrev
287 ;; expansion caused by hitting ESC
288 (viper-insert-state-post-command-sentinel)
290 (condition-case conds
292 (viper-save-last-insertion
294 viper-last-posn-while-in-insert-state
)
295 (if viper-began-as-replace
296 (setq viper-began-as-replace nil
)
297 ;; repeat insert commands if numerical arg > 1
299 (viper-repeat-insert-command))))
301 (viper-message-conditions conds
)))
303 (if (> (length viper-last-insertion
) 0)
304 (viper-push-onto-ring viper-last-insertion
305 'viper-insertion-ring
))
307 (if viper-ex-style-editing
308 (or (bolp) (backward-char 1))))
312 ((memq new-state
'(insert-state replace-state
))
313 (if (memq viper-current-state
'(emacs-state vi-state
))
314 (viper-move-marker-locally 'viper-insert-point
(point)))
315 (viper-move-marker-locally
316 'viper-last-posn-while-in-insert-state
(point))
317 (add-hook 'viper-post-command-hooks
318 'viper-insert-state-post-command-sentinel t
'local
)
319 (add-hook 'viper-pre-command-hooks
320 'viper-insert-state-pre-command-sentinel t
'local
))
323 ;; Nothing needs to be done to switch to emacs mode! Just set some
324 ;; variables, which is already done in viper-change-state-to-emacs!
327 ;; always turn off iso-accents-mode in vi-state, or else we won't be able to
328 ;; use the keys `,',^ , as they will do accents instead of Vi actions.
329 (cond ((eq new-state
'vi-state
) (viper-set-iso-accents-mode nil
));accents off
330 (viper-automatic-iso-accents (viper-set-iso-accents-mode t
));accents on
331 (t (viper-set-iso-accents-mode nil
)))
332 ;; Always turn off quail mode in vi state
333 (cond ((eq new-state
'vi-state
) (viper-set-input-method nil
)) ;intl input off
334 (viper-special-input-method (viper-set-input-method t
)) ;intl input on
335 (t (viper-set-input-method nil
)))
337 (setq viper-current-state new-state
)
339 (viper-update-syntax-classes)
340 (viper-normalize-minor-mode-map-alist)
341 (viper-adjust-keys-for new-state
)
342 (viper-set-mode-vars-for new-state
)
343 (viper-refresh-mode-line)
348 (defun viper-adjust-keys-for (state)
349 "Make necessary adjustments to keymaps before entering STATE."
350 (cond ((memq state
'(insert-state replace-state
))
351 (if viper-auto-indent
353 (define-key viper-insert-basic-map
"\C-m" 'viper-autoindent
)
354 (if viper-want-emacs-keys-in-insert
356 (define-key viper-insert-basic-map
"\C-j" nil
)
358 (define-key viper-insert-basic-map
"\C-j" 'viper-autoindent
)))
359 (define-key viper-insert-basic-map
"\C-m" nil
)
360 (define-key viper-insert-basic-map
"\C-j" nil
))
362 (setq viper-insert-diehard-minor-mode
363 (not viper-want-emacs-keys-in-insert
))
365 (if viper-want-ctl-h-help
367 (define-key viper-insert-basic-map
"\C-h" 'help-command
)
368 (define-key viper-replace-map
"\C-h" 'help-command
))
369 (define-key viper-insert-basic-map
370 "\C-h" 'viper-del-backward-char-in-insert
)
371 (define-key viper-replace-map
372 "\C-h" 'viper-del-backward-char-in-replace
))
373 ;; In XEmacs, C-h overrides backspace, so we make sure it doesn't.
374 (define-key viper-insert-basic-map
375 [backspace] 'viper-del-backward-char-in-insert)
376 (define-key viper-replace-map
377 [backspace] 'viper-del-backward-char-in-replace
)
378 ) ; end insert/replace case
380 (setq viper-vi-diehard-minor-mode
(not viper-want-emacs-keys-in-vi
))
381 (if viper-want-ctl-h-help
382 (define-key viper-vi-basic-map
"\C-h" 'help-command
)
383 (define-key viper-vi-basic-map
"\C-h" 'viper-backward-char
))
384 ;; In XEmacs, C-h overrides backspace, so we make sure it doesn't.
385 (define-key viper-vi-basic-map
[backspace] 'viper-backward-char))
389 ;; Normalizes minor-mode-map-alist by putting Viper keymaps first.
390 ;; This ensures that Viper bindings are in effect, regardless of which minor
391 ;; modes were turned on by the user or by other packages.
392 (defun viper-normalize-minor-mode-map-alist ()
393 (setq minor-mode-map-alist
394 (viper-append-filter-alist
396 (cons 'viper-vi-intercept-minor-mode viper-vi-intercept-map)
397 (cons 'viper-vi-minibuffer-minor-mode viper-minibuffer-map)
398 (cons 'viper-vi-local-user-minor-mode viper-vi-local-user-map)
399 (cons 'viper-vi-kbd-minor-mode viper-vi-kbd-map)
400 (cons 'viper-vi-global-user-minor-mode viper-vi-global-user-map)
401 (cons 'viper-vi-state-modifier-minor-mode
403 (cdr (assoc major-mode
404 viper-vi-state-modifier-alist)))
405 (cdr (assoc major-mode viper-vi-state-modifier-alist))
407 (cons 'viper-vi-diehard-minor-mode viper-vi-diehard-map)
408 (cons 'viper-vi-basic-minor-mode viper-vi-basic-map)
409 (cons 'viper-insert-intercept-minor-mode
410 viper-insert-intercept-map)
411 (cons 'viper-replace-minor-mode viper-replace-map)
412 ;; viper-insert-minibuffer-minor-mode must come after
413 ;; viper-replace-minor-mode
414 (cons 'viper-insert-minibuffer-minor-mode
415 viper-minibuffer-map)
416 (cons 'viper-insert-local-user-minor-mode
417 viper-insert-local-user-map)
418 (cons 'viper-insert-kbd-minor-mode viper-insert-kbd-map)
419 (cons 'viper-insert-global-user-minor-mode
420 viper-insert-global-user-map)
421 (cons 'viper-insert-state-modifier-minor-mode
423 (cdr (assoc major-mode
424 viper-insert-state-modifier-alist)))
425 (cdr (assoc major-mode
426 viper-insert-state-modifier-alist))
428 (cons 'viper-insert-diehard-minor-mode viper-insert-diehard-map)
429 (cons 'viper-insert-basic-minor-mode viper-insert-basic-map)
430 (cons 'viper-emacs-intercept-minor-mode
431 viper-emacs-intercept-map)
432 (cons 'viper-emacs-local-user-minor-mode
433 viper-emacs-local-user-map)
434 (cons 'viper-emacs-kbd-minor-mode viper-emacs-kbd-map)
435 (cons 'viper-emacs-global-user-minor-mode
436 viper-emacs-global-user-map)
437 (cons 'viper-emacs-state-modifier-minor-mode
440 (assoc major-mode viper-emacs-state-modifier-alist)))
442 (assoc major-mode viper-emacs-state-modifier-alist))
445 minor-mode-map-alist)))
451 ;; Viper mode-changing commands and utilities
453 ;; Modifies mode-line-buffer-identification.
454 (defun viper-refresh-mode-line ()
455 (setq viper-mode-string
456 (cond ((eq viper-current-state 'emacs-state) viper-emacs-state-id)
457 ((eq viper-current-state 'vi-state) viper-vi-state-id)
458 ((eq viper-current-state 'replace-state) viper-replace-state-id)
459 ((eq viper-current-state 'insert-state) viper-insert-state-id)))
461 ;; Sets Viper mode string in global-mode-string
462 (force-mode-line-update))
465 ;; Switch from Insert state to Vi state.
466 (defun viper-exit-insert-state ()
468 (viper-change-state-to-vi))
470 (defun viper-set-mode-vars-for (state)
471 "Sets Viper minor mode variables to put Viper's state STATE in effect."
474 (setq viper-vi-minibuffer-minor-mode nil
475 viper-insert-minibuffer-minor-mode nil
476 viper-vi-intercept-minor-mode nil
477 viper-insert-intercept-minor-mode nil
479 viper-vi-local-user-minor-mode nil
480 viper-vi-kbd-minor-mode nil
481 viper-vi-global-user-minor-mode nil
482 viper-vi-state-modifier-minor-mode nil
483 viper-vi-diehard-minor-mode nil
484 viper-vi-basic-minor-mode nil
486 viper-replace-minor-mode nil
488 viper-insert-local-user-minor-mode nil
489 viper-insert-kbd-minor-mode nil
490 viper-insert-global-user-minor-mode nil
491 viper-insert-state-modifier-minor-mode nil
492 viper-insert-diehard-minor-mode nil
493 viper-insert-basic-minor-mode nil
494 viper-emacs-intercept-minor-mode t
495 viper-emacs-local-user-minor-mode t
496 viper-emacs-kbd-minor-mode (not (viper-is-in-minibuffer))
497 viper-emacs-global-user-minor-mode t
498 viper-emacs-state-modifier-minor-mode t
502 (if (eq state 'vi-state) ; adjust for vi-state
504 viper-vi-intercept-minor-mode t
505 viper-vi-minibuffer-minor-mode (viper-is-in-minibuffer)
506 viper-vi-local-user-minor-mode t
507 viper-vi-kbd-minor-mode (not (viper-is-in-minibuffer))
508 viper-vi-global-user-minor-mode t
509 viper-vi-state-modifier-minor-mode t
510 ;; don't let the diehard keymap block command completion
511 ;; and other things in the minibuffer
512 viper-vi-diehard-minor-mode (not
513 (or viper-want-emacs-keys-in-vi
514 (viper-is-in-minibuffer)))
515 viper-vi-basic-minor-mode t
516 viper-emacs-intercept-minor-mode nil
517 viper-emacs-local-user-minor-mode nil
518 viper-emacs-kbd-minor-mode nil
519 viper-emacs-global-user-minor-mode nil
520 viper-emacs-state-modifier-minor-mode nil
523 ;; Insert and Replace states
524 (if (member state '(insert-state replace-state))
526 viper-insert-intercept-minor-mode t
527 viper-replace-minor-mode (eq state 'replace-state)
528 viper-insert-minibuffer-minor-mode (viper-is-in-minibuffer)
529 viper-insert-local-user-minor-mode t
530 viper-insert-kbd-minor-mode (not (viper-is-in-minibuffer))
531 viper-insert-global-user-minor-mode t
532 viper-insert-state-modifier-minor-mode t
533 ;; don't let the diehard keymap block command completion
534 ;; and other things in the minibuffer
535 viper-insert-diehard-minor-mode (not
537 viper-want-emacs-keys-in-insert
538 (viper-is-in-minibuffer)))
539 viper-insert-basic-minor-mode t
540 viper-emacs-intercept-minor-mode nil
541 viper-emacs-local-user-minor-mode nil
542 viper-emacs-kbd-minor-mode nil
543 viper-emacs-global-user-minor-mode nil
544 viper-emacs-state-modifier-minor-mode nil
548 (if (viper-has-face-support-p)
549 (setq viper-minibuffer-current-face
550 (cond ((eq state 'emacs-state) viper-minibuffer-emacs-face)
551 ((eq state 'vi-state) viper-minibuffer-vi-face)
552 ((memq state '(insert-state replace-state))
553 viper-minibuffer-insert-face))))
555 (if (viper-is-in-minibuffer)
556 (viper-set-minibuffer-overlay))
559 ;; This also takes care of the annoying incomplete lines in files.
560 ;; Also, this fixes `undo' to work vi-style for complex commands.
561 (defun viper-change-state-to-vi ()
562 "Change Viper state to Vi."
564 (if (and viper-first-time (not (viper-is-in-minibuffer)))
566 (if overwrite-mode (overwrite-mode nil))
567 (if abbrev-mode (expand-abbrev))
568 (if (and auto-fill-function (> (current-column) fill-column))
569 (funcall auto-fill-function))
570 ;; don't leave whitespace lines around
571 (if (and (memq last-command
573 viper-open-line viper-Open-line
574 viper-replace-state-exit-cmd))
575 (viper-over-whitespace-line))
576 (indent-to-left-margin))
577 (viper-add-newline-at-eob-if-necessary)
579 (viper-change-state 'vi-state)
581 (viper-restore-cursor-color-after-insert)
583 ;; Protect against user errors in hooks
584 (condition-case conds
585 (run-hooks 'viper-vi-state-hook)
587 (viper-message-conditions conds)))))
589 (defun viper-change-state-to-insert ()
590 "Change Viper state to Insert."
592 (viper-change-state 'insert-state)
594 (or (stringp viper-saved-cursor-color)
595 (string= (viper-get-cursor-color) viper-insert-state-cursor-color)
596 (setq viper-saved-cursor-color (viper-get-cursor-color)))
597 ;; Commented out, because if viper-change-state-to-insert is executed
598 ;; non-interactively then the old cursor color may get lost. Same old Emacs
599 ;; bug related to local variables?
600 ;;;(if (stringp viper-saved-cursor-color)
601 ;;; (viper-change-cursor-color viper-insert-state-cursor-color))
603 ;; Protect against user errors in hooks
604 (condition-case conds
605 (run-hooks 'viper-insert-state-hook)
607 (viper-message-conditions conds))))
609 (defsubst viper-downgrade-to-insert ()
610 (setq viper-current-state 'insert-state
611 viper-replace-minor-mode nil))
615 ;; Change to replace state. When the end of replacement region is reached,
616 ;; replace state changes to insert state.
617 (defun viper-change-state-to-replace (&optional non-R-cmd)
618 (viper-change-state 'replace-state)
619 ;; Run insert-state-hook
620 (condition-case conds
621 (run-hooks 'viper-insert-state-hook 'viper-replace-state-hook)
623 (viper-message-conditions conds)))
626 (viper-start-replace)
627 ;; 'R' is implemented using Emacs's overwrite-mode
628 (viper-start-R-mode))
632 (defun viper-change-state-to-emacs ()
633 "Change Viper state to Emacs."
635 (viper-change-state 'emacs-state)
637 ;; Protect agains user errors in hooks
638 (condition-case conds
639 (run-hooks 'viper-emacs-state-hook)
641 (viper-message-conditions conds))))
643 ;; escape to emacs mode termporarily
644 (defun viper-escape-to-emacs (arg &optional events)
645 "Escape to Emacs state from Vi state for one Emacs command.
646 ARG is used as the prefix value for the executed command. If
647 EVENTS is a list of events, which become the beginning of the command."
649 (if (= last-command-char ?\\)
650 (message "Switched to EMACS state for the next command..."))
651 (viper-escape-to-state arg events 'emacs-state))
653 ;; escape to Vi mode termporarily
654 (defun viper-escape-to-vi (arg)
655 "Escape from Emacs state to Vi state for one Vi 1-character command.
656 If the Vi command that the user types has a prefix argument, e.g., `d2w', then
657 Vi's prefix argument will be used. Otherwise, the prefix argument passed to
658 `viper-escape-to-vi' is used."
660 (message "Switched to VI state for the next command...")
661 (viper-escape-to-state arg nil 'vi-state))
663 ;; Escape to STATE mode for one Emacs command.
664 (defun viper-escape-to-state (arg events state)
665 ;;(let (com key prefix-arg)
667 ;; this temporarily turns off Viper's minor mode keymaps
668 (viper-set-mode-vars-for state)
669 (viper-normalize-minor-mode-map-alist)
670 (if events (viper-set-unread-command-events events))
672 ;; protect against keyboard quit and other errors
674 (let (viper-vi-kbd-minor-mode
675 viper-insert-kbd-minor-mode
676 viper-emacs-kbd-minor-mode)
679 (setq com (key-binding (setq key
681 (read-key-sequence nil)
682 (read-key-sequence nil t)))))
683 ;; In case of binding indirection--chase definitions.
684 ;; Have to do it here because we execute this command under
685 ;; different keymaps, so command-execute may not do the
687 (while (vectorp com) (setq com (key-binding com))))
689 ;; Execute command com in the original Viper state, not in state
690 ;; `state'. Otherwise, if we switch buffers while executing the
691 ;; escaped to command, Viper's mode vars will remain those of
692 ;; `state'. When we return to the orig buffer, the bindings will be
694 (viper-set-mode-vars-for viper-current-state)
696 ;; this-command, last-command-char, last-command-event
697 (setq this-command com)
698 (if viper-xemacs-p ; XEmacs represents key sequences as vectors
699 (setq last-command-event
700 (viper-copy-event (viper-seq-last-elt key))
701 last-command-char (event-to-character last-command-event))
702 ;; Emacs represents them as sequences (str or vec)
703 (setq last-command-event
704 (viper-copy-event (viper-seq-last-elt key))
705 last-command-char last-command-event))
709 (setq prefix-arg (or prefix-arg arg))
710 (command-execute com)))
714 ;; set state in the new buffer
715 (viper-set-mode-vars-for viper-current-state))
717 (defun viper-exec-form-in-vi (form)
718 "Execute FORM in Vi state, regardless of the Ccurrent Vi state."
719 (let ((buff (current-buffer))
721 (viper-set-mode-vars-for 'vi-state)
724 (let (viper-vi-kbd-minor-mode) ; execute without kbd macros
725 (setq result (eval form))
730 (if (not (equal buff (current-buffer))) ; cmd switched buffer
733 (viper-set-mode-vars-for viper-current-state)))
734 (viper-set-mode-vars-for viper-current-state)
737 (defun viper-exec-form-in-emacs (form)
738 "Execute FORM in Emacs, temporarily disabling Viper's minor modes.
739 Similar to viper-escape-to-emacs, but accepts forms rather than keystrokes."
740 (let ((buff (current-buffer))
742 (viper-set-mode-vars-for 'emacs-state)
743 (setq result (eval form))
744 (if (not (equal buff (current-buffer))) ; cmd switched buffer
747 (viper-set-mode-vars-for viper-current-state)))
748 (viper-set-mode-vars-for viper-current-state)
752 ;; This is needed because minor modes sometimes override essential Viper
753 ;; bindings. By letting Viper know which files these modes are in, it will
754 ;; arrange to reorganize minor-mode-map-alist so that things will work right.
755 (defun viper-harness-minor-mode (load-file)
756 "Familiarize Viper with a minor mode defined in LOAD_FILE.
757 Minor modes that have their own keymaps may overshadow Viper keymaps.
758 This function is designed to make Viper aware of the packages that define
761 (viper-harness-minor-mode load-file)
763 LOAD-FILE is a name of the file where the specific minor mode is defined.
764 Suffixes such as .el or .elc should be stripped."
766 (interactive "sEnter name of the load file: ")
768 (eval-after-load load-file '(viper-normalize-minor-mode-map-alist))
770 ;; Change the default for minor-mode-map-alist each time a harnessed minor
771 ;; mode adds its own keymap to the a-list.
773 load-file '(setq-default minor-mode-map-alist minor-mode-map-alist))
777 (defun viper-ESC (arg)
778 "Emulate ESC key in Emacs.
779 Prevents multiple escape keystrokes if viper-no-multiple-ESC is true.
780 If viper-no-multiple-ESC is 'twice double ESC would ding in vi-state.
781 Other ESC sequences are emulated via the current Emacs's major mode
782 keymap. This is more convenient on TTYs, since this won't block
783 function keys such as up,down, etc. ESC will also will also work as
784 a Meta key in this case. When viper-no-multiple-ESC is nil, ESC functions
785 as a Meta key and any number of multiple escapes is allowed."
788 (cond ((and (not viper-no-multiple-ESC) (eq viper-current-state 'vi-state))
789 (setq char (viper-read-char-exclusive))
790 (viper-escape-to-emacs arg (list ?\e char) ))
791 ((and (eq viper-no-multiple-ESC 'twice)
792 (eq viper-current-state 'vi-state))
793 (setq char (viper-read-char-exclusive))
794 (if (= char (string-to-char viper-ESC-key))
796 (viper-escape-to-emacs arg (list ?\e char) )))
800 (defun viper-alternate-Meta-key (arg)
801 "Simulate Emacs Meta key."
803 (sit-for 1) (message "ESC-")
804 (viper-escape-to-emacs arg '(?\e)))
806 (defun viper-toggle-key-action ()
807 "Action bound to `viper-toggle-key'."
809 (if (and (< viper-expert-level 2) (equal viper-toggle-key "\C-z"))
810 (if (viper-window-display-p)
813 (viper-change-state-to-emacs)))
816 ;; Intercept ESC sequences on dumb terminals.
817 ;; Based on the idea contributed by Marcelino Veiga Tuimil <mveiga@dit.upm.es>
819 ;; Check if last key was ESC and if so try to reread it as a function key.
820 ;; But only if there are characters to read during a very short time.
821 ;; Returns the last event, if any.
822 (defun viper-envelop-ESC-key ()
823 (let ((event last-input-event)
826 (if (viper-ESC-event-p event)
828 (if (viper-fast-keysequence-p)
830 (let (minor-mode-map-alist)
831 (viper-set-unread-command-events event)
834 (ad-get-orig-definition 'read-key-sequence) nil))
836 ;; If keyseq translates into something that still has ESC
837 ;; at the beginning, separate ESC from the rest of the seq.
838 ;; In XEmacs we check for events that are keypress meta-key
839 ;; and convert them into [escape key]
841 ;; This is needed for the following reason:
842 ;; If ESC is the first symbol, we interpret it as if the
843 ;; user typed ESC and then quickly some other symbols.
844 ;; If ESC is not the first one, then the key sequence
845 ;; entered was apparently translated into a function key or
846 ;; something (e.g., one may have
847 ;; (define-key function-key-map "\e[192z" [f11])
848 ;; which would translate the escape-sequence generated by
849 ;; f11 in an xterm window into the symbolic key f11.
851 ;; If `first-key' is not an ESC event, we make it into the
852 ;; last-command-event in order to pretend that this key was
853 ;; pressed. This is needed to allow arrow keys to be bound to
854 ;; macros. Otherwise, viper-exec-mapped-kbd-macro will think
855 ;; that the last event was ESC and so it'll execute whatever is
856 ;; bound to ESC. (Viper macros can't be bound to
858 (let* ((first-key (elt keyseq 0))
859 (key-mod (event-modifiers first-key)))
860 (cond ((viper-ESC-event-p first-key)
861 ;; put keys following ESC on the unread list
862 ;; and return ESC as the key-sequence
863 (viper-set-unread-command-events (subseq keyseq 1))
864 (setq last-input-event event
865 keyseq (if viper-emacs-p
867 (vector (character-to-event ?\e)))))
869 (key-press-event-p first-key)
870 (equal '(meta) key-mod))
871 (viper-set-unread-command-events
873 (character-to-event (event-key first-key)))
875 (setq last-input-event event
876 keyseq (vector (character-to-event ?\e))))
878 (setq last-command-event
879 (viper-copy-event first-key)))
883 ;; this is escape event with nothing after it
884 ;; put in unread-command-event and then re-read
885 (viper-set-unread-command-events event)
887 (funcall (ad-get-orig-definition 'read-key-sequence) nil))
889 ;; not an escape event
890 (setq keyseq (vector event)))
895 ;; Listen to ESC key.
896 ;; If a sequence of keys starting with ESC is issued with very short delays,
897 ;; interpret these keys in Emacs mode, so ESC won't be interpreted as a Vi key.
898 (defun viper-intercept-ESC-key ()
899 "Function that implements ESC key in Viper emulation of Vi."
901 (let ((cmd (or (key-binding (viper-envelop-ESC-key))
902 '(lambda () (interactive) (error "")))))
904 ;; call the actual function to execute ESC (if no other symbols followed)
905 ;; or the key bound to the ESC sequence (if the sequence was issued
906 ;; with very short delay between characters.
907 (if (eq cmd 'viper-intercept-ESC-key)
909 (cond ((eq viper-current-state 'vi-state)
911 ((eq viper-current-state 'insert-state)
912 'viper-exit-insert-state)
913 ((eq viper-current-state 'replace-state)
914 'viper-replace-state-exit-cmd)
915 (t 'viper-change-state-to-vi)
917 (call-interactively cmd)))
922 ;; prefix argument for Vi mode
924 ;; In Vi mode, prefix argument is a dotted pair (NUM . COM) where NUM
925 ;; represents the numeric value of the prefix argument and COM represents
926 ;; command prefix such as "c", "d", "m" and "y".
928 ;; Get value part of prefix-argument ARG.
929 (defsubst viper-p-val (arg)
932 (if (or (null (car arg)) (equal (car arg) '(nil)))
936 ;; Get raw value part of prefix-argument ARG.
937 (defsubst viper-P-val (arg)
938 (cond ((consp arg) (car arg))
941 ;; Get com part of prefix-argument ARG.
942 (defsubst viper-getcom (arg)
943 (cond ((null arg) nil)
944 ((consp arg) (cdr arg))
947 ;; Get com part of prefix-argument ARG and modify it.
948 (defun viper-getCom (arg)
949 (let ((com (viper-getcom arg)))
950 (cond ((equal com ?c) ?c)
951 ;; Previously, ?c was being converted to ?C, but this prevented
952 ;; multiline replace regions.
953 ;;((equal com ?c) ?C)
959 ;; Compute numeric prefix arg value.
960 ;; Invoked by EVENT. COM is the command part obtained so far.
961 (defun viper-prefix-arg-value (event-char com)
962 (let ((viper-intermediate-command 'viper-digit-argument)
965 (while (and (viper-characterp event-char)
966 (>= event-char ?0) (<= event-char ?9))
967 (setq value (+ (* (if (integerp value) value 0) 10) (- event-char ?0)))
968 (setq event-char (viper-read-event-convert-to-char)))
970 (setq prefix-arg value)
971 (if com (setq prefix-arg (cons prefix-arg com)))
972 (while (eq event-char ?U)
973 (viper-describe-arg prefix-arg)
974 (setq event-char (viper-read-event-convert-to-char)))
976 (if (or com (and (not (eq viper-current-state 'vi-state))
977 ;; make sure it is a Vi command
978 (viper-characterp event-char)
979 (viper-vi-command-p event-char)
981 ;; If appears to be one of the vi commands,
982 ;; then execute it with funcall and clear prefix-arg in order to not
983 ;; confuse subsequent commands
985 ;; last-command-char is the char we want emacs to think was typed
986 ;; last. If com is not nil, the viper-digit-argument command was
987 ;; called from within viper-prefix-arg command, such as `d', `w',
988 ;; etc., i.e., the user typed, say, d2. In this case, `com' would be
989 ;; `d', `w', etc. If viper-digit-argument was invoked by
990 ;; viper-escape-to-vi (which is indicated by the fact that the
991 ;; current state is not vi-state), then `event-char' represents the
992 ;; vi command to be executed (e.g., `d', `w', etc). Again,
993 ;; last-command-char must make emacs believe that this is the command
995 (cond ((eq event-char 'return) (setq event-char ?\C-m))
996 ((eq event-char 'delete) (setq event-char ?\C-?))
997 ((eq event-char 'backspace) (setq event-char ?\C-h))
998 ((eq event-char 'space) (setq event-char ?\ )))
999 (setq last-command-char (or com event-char))
1000 (setq func (viper-exec-form-in-vi
1001 (` (key-binding (char-to-string (, event-char))))))
1002 (funcall func prefix-arg)
1003 (setq prefix-arg nil))
1004 ;; some other command -- let emacs do it in its own way
1005 (viper-set-unread-command-events event-char))
1009 ;; Vi operator as prefix argument."
1010 (defun viper-prefix-arg-com (char value com)
1016 (list ?c ?d ?y ?! ?< ?> ?= ?# ?r ?R ?\"
1017 viper-buffer-search-char)))
1019 ;; this means that we already have a command character, so we
1020 ;; construct a com list and exit while. however, if char is "
1023 ;; new com is (CHAR . OLDCOM)
1024 (if (memq char '(?# ?\")) (error ""))
1025 (setq com (cons char com))
1027 ;; If com is nil we set com as char, and read more. Again, if char is
1028 ;; ", we read the name of register and store it in viper-use-register.
1029 ;; if char is !, =, or #, a complete com is formed so we exit the while
1031 (cond ((memq char '(?! ?=))
1033 (setq char (read-char))
1036 ;; read a char and encode it as com
1037 (setq com (+ 128 (read-char)))
1038 (setq char (read-char)))
1040 (let ((reg (read-char)))
1041 (if (viper-valid-register reg)
1042 (setq viper-use-register reg)
1044 (setq char (read-char))))
1047 (setq char (read-char))))))
1050 ;; `com' is a single char, so we construct the command argument
1051 ;; and if `char' is `?', we describe the arg; otherwise
1052 ;; we prepare the command that will be executed at the end.
1054 (setq cmd-info (cons value com))
1056 (viper-describe-arg cmd-info)
1057 (setq char (read-char)))
1058 ;; `char' is a movement cmd, a digit arg cmd, or a register cmd---so we
1059 ;; execute it at the very end
1060 (or (viper-movement-command-p char)
1061 (viper-digit-command-p char)
1062 (viper-regsuffix-command-p char)
1063 (= char ?!) ; bang command
1065 (setq cmd-to-exec-at-end
1066 (viper-exec-form-in-vi
1067 (` (key-binding (char-to-string (, char)))))))
1069 ;; as com is non-nil, this means that we have a command to execute
1070 (if (memq (car com) '(?r ?R))
1071 ;; execute apropriate region command.
1072 (let ((char (car com)) (com (cdr com)))
1073 (setq prefix-arg (cons value com))
1074 (if (= char ?r) (viper-region prefix-arg)
1075 (viper-Region prefix-arg))
1077 (setq prefix-arg nil))
1078 ;; otherwise, reset prefix arg and call appropriate command
1079 (setq value (if (null value) 1 value))
1080 (setq prefix-arg nil)
1082 ;; If we change ?C to ?c here, then cc will enter replacement mode
1083 ;; rather than deleting lines. However, it will affect 1 less line than
1084 ;; normal. We decided to not use replacement mode here and follow Vi,
1085 ;; since replacement mode on n full lines can be achieved with nC.
1086 ((equal com '(?c . ?c)) (viper-line (cons value ?C)))
1087 ((equal com '(?d . ?d)) (viper-line (cons value ?D)))
1088 ((equal com '(?d . ?y)) (viper-yank-defun))
1089 ((equal com '(?y . ?y)) (viper-line (cons value ?Y)))
1090 ((equal com '(?< . ?<)) (viper-line (cons value ?<)))
1091 ((equal com '(?> . ?>)) (viper-line (cons value ?>)))
1092 ((equal com '(?! . ?!)) (viper-line (cons value ?!)))
1093 ((equal com '(?= . ?=)) (viper-line (cons value ?=)))
1096 (if cmd-to-exec-at-end
1098 (setq last-command-char char)
1099 (setq last-command-event
1101 (if viper-xemacs-p (character-to-event char) char)))
1103 (funcall cmd-to-exec-at-end cmd-info)
1108 (defun viper-describe-arg (arg)
1110 (setq val (viper-P-val arg)
1111 com (viper-getcom arg))
1114 (message "Value is nil, and command is nil")
1115 (message "Value is nil, and command is `%c'" com))
1117 (message "Value is `%d', and command is nil" val)
1118 (message "Value is `%d', and command is `%c'" val com)))))
1120 (defun viper-digit-argument (arg)
1121 "Begin numeric argument for the next command."
1123 (viper-leave-region-active)
1124 (viper-prefix-arg-value
1125 last-command-char (if (consp arg) (cdr arg) nil)))
1127 (defun viper-command-argument (arg)
1128 "Accept a motion command as an argument."
1130 (let ((viper-intermediate-command 'viper-command-argument))
1132 (viper-prefix-arg-com
1134 (cond ((null arg) nil)
1135 ((consp arg) (car arg))
1136 ((integerp arg) arg)
1137 (t (error viper-InvalidCommandArgument)))
1138 (cond ((null arg) nil)
1139 ((consp arg) (cdr arg))
1140 ((integerp arg) nil)
1141 (t (error viper-InvalidCommandArgument))))
1142 (quit (setq viper-use-register nil)
1143 (signal 'quit nil)))
1144 (viper-deactivate-mark)))
1147 ;; repeat last destructive command
1149 ;; Append region to text in register REG.
1150 ;; START and END are buffer positions indicating what to append.
1151 (defsubst viper-append-to-register (reg start end)
1152 (set-register reg (concat (if (stringp (get-register reg))
1153 (get-register reg) "")
1154 (buffer-substring start end))))
1156 ;; Saves last inserted text for possible use by viper-repeat command.
1157 (defun viper-save-last-insertion (beg end)
1159 (setq viper-last-insertion (buffer-substring beg end))
1161 ;; beg or end marker are somehow screwed up
1162 (setq viper-last-insertion nil)))
1163 (setq viper-last-insertion (buffer-substring beg end))
1164 (or (< (length viper-d-com) 5)
1165 (setcar (nthcdr 4 viper-d-com) viper-last-insertion))
1166 (or (null viper-command-ring)
1167 (ring-empty-p viper-command-ring)
1169 (setcar (nthcdr 4 (viper-current-ring-item viper-command-ring))
1170 viper-last-insertion)
1171 ;; del most recent elt, if identical to the second most-recent
1172 (viper-cleanup-ring viper-command-ring)))
1175 (defsubst viper-yank-last-insertion ()
1176 "Inserts the text saved by the previous viper-save-last-insertion command."
1178 (insert viper-last-insertion)
1182 ;; define functions to be executed
1184 ;; invoked by the `C' command
1185 (defun viper-exec-change (m-com com)
1186 (or (and (markerp viper-com-point) (marker-position viper-com-point))
1187 (set-marker viper-com-point (point) (current-buffer)))
1188 ;; handle C cmd at the eol and at eob.
1189 (if (or (and (eolp) (= viper-com-point (point)))
1190 (= viper-com-point (point-max)))
1192 (insert " ")(backward-char 1)))
1193 (if (= viper-com-point (point))
1194 (viper-forward-char-carefully))
1195 (set-mark viper-com-point)
1196 (if (eq m-com 'viper-next-line-at-bol)
1197 (viper-enlarge-region (mark t) (point)))
1198 (if (< (point) (mark t))
1199 (exchange-point-and-mark))
1200 (if (eq (preceding-char) ?\n)
1201 (viper-backward-char-carefully)) ; give back the newline
1203 (viper-change (mark t) (point))
1204 (viper-change-subr (mark t) (point))))
1206 ;; this is invoked by viper-substitute-line
1207 (defun viper-exec-Change (m-com com)
1209 (set-mark viper-com-point)
1210 (viper-enlarge-region (mark t) (point))
1211 (if viper-use-register
1213 (cond ((viper-valid-register viper-use-register '(letter digit))
1215 viper-use-register (mark t) (point) nil))
1216 ((viper-valid-register viper-use-register '(Letter))
1217 (viper-append-to-register
1218 (downcase viper-use-register) (mark t) (point)))
1219 (t (setq viper-use-register nil)
1220 (error viper-InvalidRegister viper-use-register)))
1221 (setq viper-use-register nil)))
1222 (delete-region (mark t) (point)))
1225 (viper-change-state-to-insert)
1226 (viper-yank-last-insertion)))
1228 (defun viper-exec-delete (m-com com)
1229 (or (and (markerp viper-com-point) (marker-position viper-com-point))
1230 (set-marker viper-com-point (point) (current-buffer)))
1231 (if viper-use-register
1233 (cond ((viper-valid-register viper-use-register '(letter digit))
1235 viper-use-register viper-com-point (point) nil))
1236 ((viper-valid-register viper-use-register '(Letter))
1237 (viper-append-to-register
1238 (downcase viper-use-register) viper-com-point (point)))
1239 (t (setq viper-use-register nil)
1240 (error viper-InvalidRegister viper-use-register)))
1241 (setq viper-use-register nil)))
1243 (if (eq last-command 'd-command) 'kill-region nil))
1244 (message "Deleted %d characters" (abs (- (point) viper-com-point)))
1245 (kill-region viper-com-point (point))
1246 (setq this-command 'd-command)
1247 (if viper-ex-style-motion
1248 (if (and (eolp) (not (bolp))) (backward-char 1))))
1250 (defun viper-exec-Delete (m-com com)
1252 (set-mark viper-com-point)
1253 (viper-enlarge-region (mark t) (point))
1254 (if viper-use-register
1256 (cond ((viper-valid-register viper-use-register '(letter digit))
1258 viper-use-register (mark t) (point) nil))
1259 ((viper-valid-register viper-use-register '(Letter))
1260 (viper-append-to-register
1261 (downcase viper-use-register) (mark t) (point)))
1262 (t (setq viper-use-register nil)
1263 (error viper-InvalidRegister viper-use-register)))
1264 (setq viper-use-register nil)))
1266 (if (eq last-command 'D-command) 'kill-region nil))
1267 (message "Deleted %d lines" (count-lines (point) viper-com-point))
1268 (kill-region (mark t) (point))
1269 (if (eq m-com 'viper-line) (setq this-command 'D-command)))
1270 (back-to-indentation))
1273 (defun viper-exec-yank (m-com com)
1274 (or (and (markerp viper-com-point) (marker-position viper-com-point))
1275 (set-marker viper-com-point (point) (current-buffer)))
1276 (if viper-use-register
1278 (cond ((viper-valid-register viper-use-register '(letter digit))
1280 viper-use-register viper-com-point (point) nil))
1281 ((viper-valid-register viper-use-register '(Letter))
1282 (viper-append-to-register
1283 (downcase viper-use-register) viper-com-point (point)))
1284 (t (setq viper-use-register nil)
1285 (error viper-InvalidRegister viper-use-register)))
1286 (setq viper-use-register nil)))
1287 (setq last-command nil)
1288 (copy-region-as-kill viper-com-point (point))
1289 (message "Saved %d characters" (abs (- (point) viper-com-point)))
1290 (goto-char viper-com-point))
1293 (defun viper-exec-Yank (m-com com)
1295 (set-mark viper-com-point)
1296 (viper-enlarge-region (mark t) (point))
1297 (if viper-use-register
1299 (cond ((viper-valid-register viper-use-register '(letter digit))
1301 viper-use-register (mark t) (point) nil))
1302 ((viper-valid-register viper-use-register '(Letter))
1303 (viper-append-to-register
1304 (downcase viper-use-register) (mark t) (point)))
1305 (t (setq viper-use-register nil)
1306 (error viper-InvalidRegister viper-use-register)))
1307 (setq viper-use-register nil)))
1308 (setq last-command nil)
1309 (copy-region-as-kill (mark t) (point))
1310 (message "Saved %d lines" (count-lines (mark t) (point))))
1311 (viper-deactivate-mark)
1312 (goto-char viper-com-point))
1314 (defun viper-exec-bang (m-com com)
1316 (set-mark viper-com-point)
1317 (viper-enlarge-region (mark t) (point))
1318 (exchange-point-and-mark)
1319 (shell-command-on-region
1322 (setq viper-last-shell-com
1323 (viper-read-string-with-history
1326 'viper-shell-history
1327 (car viper-shell-history)
1329 viper-last-shell-com)
1332 (defun viper-exec-equals (m-com com)
1334 (set-mark viper-com-point)
1335 (viper-enlarge-region (mark t) (point))
1336 (if (> (mark t) (point)) (exchange-point-and-mark))
1337 (indent-region (mark t) (point) nil)))
1339 (defun viper-exec-shift (m-com com)
1341 (set-mark viper-com-point)
1342 (viper-enlarge-region (mark t) (point))
1343 (if (> (mark t) (point)) (exchange-point-and-mark))
1344 (indent-rigidly (mark t) (point)
1347 (- viper-shift-width))))
1348 ;; return point to where it was before shift
1349 (goto-char viper-com-point))
1351 ;; this is needed because some commands fake com by setting it to ?r, which
1352 ;; denotes repeated insert command.
1353 (defsubst viper-exec-dummy (m-com com)
1356 (defun viper-exec-buffer-search (m-com com)
1357 (setq viper-s-string (buffer-substring (point) viper-com-point))
1358 (setq viper-s-forward t)
1359 (setq viper-search-history (cons viper-s-string viper-search-history))
1360 (viper-search viper-s-string viper-s-forward 1))
1362 (defvar viper-exec-array (make-vector 128 nil))
1364 ;; Using a dispatch array allows adding functions like buffer search
1365 ;; without affecting other functions. Buffer search can now be bound
1366 ;; to any character.
1368 (aset viper-exec-array ?c 'viper-exec-change)
1369 (aset viper-exec-array ?C 'viper-exec-Change)
1370 (aset viper-exec-array ?d 'viper-exec-delete)
1371 (aset viper-exec-array ?D 'viper-exec-Delete)
1372 (aset viper-exec-array ?y 'viper-exec-yank)
1373 (aset viper-exec-array ?Y 'viper-exec-Yank)
1374 (aset viper-exec-array ?r 'viper-exec-dummy)
1375 (aset viper-exec-array ?! 'viper-exec-bang)
1376 (aset viper-exec-array ?< 'viper-exec-shift)
1377 (aset viper-exec-array ?> 'viper-exec-shift)
1378 (aset viper-exec-array ?= 'viper-exec-equals)
1382 ;; This function is called by various movement commands to execute a
1383 ;; destructive command on the region specified by the movement command. For
1384 ;; instance, if the user types cw, then the command viper-forward-word will
1385 ;; call viper-execute-com to execute viper-exec-change, which eventually will
1386 ;; call viper-change to invoke the replace mode on the region.
1388 ;; The var viper-d-com is set to (M-COM VAL COM REG INSETED-TEXT COMMAND-KEYS)
1389 ;; via a call to viper-set-destructive-command, for later use by viper-repeat.
1390 (defun viper-execute-com (m-com val com)
1391 (let ((reg viper-use-register))
1392 ;; this is the special command `#'
1394 (viper-special-prefix-com (- com 128))
1395 (let ((fn (aref viper-exec-array (if (< com 0) (- com) com))))
1397 (error "%c: %s" com viper-InvalidViCommand)
1398 (funcall fn m-com com))))
1399 (if (viper-dotable-command-p com)
1400 (viper-set-destructive-command
1402 (if (memq com (list ?c ?C ?!)) (- com) com)
1407 (defun viper-repeat (arg)
1408 "Re-execute last destructive command.
1409 Use the info in viper-d-com, which has the form
1410 \(com val ch reg inserted-text command-keys\),
1411 where `com' is the command to be re-executed, `val' is the
1412 argument to `com', `ch' is a flag for repeat, and `reg' is optional;
1413 if it exists, it is the name of the register for `com'.
1414 If the prefix argument, ARG, is non-nil, it is used instead of `val'."
1416 (let ((save-point (point)) ; save point before repeating prev cmd
1417 ;; Pass along that we are repeating a destructive command
1418 ;; This tells viper-set-destructive-command not to update
1419 ;; viper-command-ring
1420 (viper-intermediate-command 'viper-repeat))
1421 (if (eq last-command 'viper-undo)
1422 ;; if the last command was viper-undo, then undo-more
1424 ;; otherwise execute the command stored in viper-d-com. if arg is
1425 ;; non-nil its prefix value is used as new prefix value for the command.
1426 (let ((m-com (car viper-d-com))
1427 (val (viper-P-val arg))
1428 (com (nth 2 viper-d-com))
1429 (reg (nth 3 viper-d-com)))
1430 (if (null val) (setq val (nth 1 viper-d-com)))
1431 (if (null m-com) (error "No previous command to repeat."))
1432 (setq viper-use-register reg)
1433 (if (nth 4 viper-d-com) ; text inserted by command
1434 (setq viper-last-insertion (nth 4 viper-d-com)
1435 viper-d-char (nth 4 viper-d-com)))
1436 (funcall m-com (cons val com))
1437 (cond ((and (< save-point (point)) viper-keep-point-on-repeat)
1438 (goto-char save-point)) ; go back to before repeat.
1439 ((and (< save-point (point)) viper-ex-style-editing)
1440 (or (bolp) (backward-char 1))))
1441 (if (and (eolp) (not (bolp)))
1444 (viper-adjust-undo) ; take care of undo
1445 ;; If the prev cmd was rotating the command ring, this means that `.' has
1446 ;; just executed a command from that ring. So, push it on the ring again.
1447 ;; If we are just executing previous command , then don't push viper-d-com
1448 ;; because viper-d-com is not fully constructed in this case (its keys and
1449 ;; the inserted text may be nil). Besides, in this case, the command
1450 ;; executed by `.' is already on the ring.
1451 (if (eq last-command 'viper-display-current-destructive-command)
1452 (viper-push-onto-ring viper-d-com 'viper-command-ring))
1453 (viper-deactivate-mark)
1456 (defun viper-repeat-from-history ()
1457 "Repeat a destructive command from history.
1458 Doesn't change viper-command-ring in any way, so `.' will work as before
1459 executing this command.
1460 This command is supposed to be bound to a two-character Vi macro where
1461 the second character is a digit 0 to 9. The digit indicates which
1462 history command to execute. `<char>0' is equivalent to `.', `<char>1'
1463 invokes the command before that, etc."
1465 (let* ((viper-intermediate-command 'repeating-display-destructive-command)
1466 (idx (cond (viper-this-kbd-macro
1468 (symbol-name (elt viper-this-kbd-macro 1))))
1471 (viper-d-com viper-d-com))
1473 (or (and (numberp num) (<= 0 num) (<= num 9))
1478 "`viper-repeat-from-history' must be invoked as a Vi macro bound to `<key><digit>'")))
1480 (setq viper-d-com (viper-special-ring-rotate1 viper-command-ring -1))
1481 (setq num (1- num)))
1484 (viper-special-ring-rotate1 viper-command-ring 1)
1485 (setq num (1+ num)))
1489 ;; The hash-command. It is invoked interactively by the key sequence #<char>.
1490 ;; The chars that can follow `#' are determined by viper-hash-command-p
1491 (defun viper-special-prefix-com (char)
1493 (downcase-region (min viper-com-point (point))
1494 (max viper-com-point (point))))
1496 (upcase-region (min viper-com-point (point))
1497 (max viper-com-point (point))))
1499 (push-mark viper-com-point t)
1500 (viper-global-execute))
1502 (push-mark viper-com-point t)
1503 (viper-quote-region))
1504 ((= char ?s) (funcall viper-spell-function viper-com-point (point)))
1505 (t (error "#%c: %s" char viper-InvalidViCommand))))
1510 (defun viper-undo ()
1511 "Undo previous change."
1514 (let ((modified (buffer-modified-p))
1515 (before-undo-pt (point-marker))
1516 (after-change-functions after-change-functions)
1517 undo-beg-posn undo-end-posn)
1519 ;; no need to remove this hook, since this var has scope inside a let.
1520 (add-hook 'after-change-functions
1521 '(lambda (beg end len)
1522 (setq undo-beg-posn beg
1523 undo-end-posn (or end beg))))
1527 (setq undo-beg-posn (or undo-beg-posn before-undo-pt)
1528 undo-end-posn (or undo-end-posn undo-beg-posn))
1530 (goto-char undo-beg-posn)
1532 (if (and viper-keep-point-on-undo
1533 (pos-visible-in-window-p before-undo-pt))
1535 (push-mark (point-marker) t)
1536 (viper-sit-for-short 300)
1537 (goto-char undo-end-posn)
1538 (viper-sit-for-short 300)
1539 (if (and (> (viper-chars-in-region undo-beg-posn before-undo-pt) 1)
1540 (> (viper-chars-in-region undo-end-posn before-undo-pt) 1))
1541 (goto-char before-undo-pt)
1542 (goto-char undo-beg-posn)))
1543 (push-mark before-undo-pt t))
1544 (if (and (eolp) (not (bolp))) (backward-char 1))
1545 (if (not modified) (set-buffer-modified-p t)))
1546 (setq this-command 'viper-undo))
1548 ;; Continue undoing previous changes.
1549 (defun viper-undo-more ()
1550 (message "undo more!")
1554 (message "No further undo information in this buffer")))
1555 (if (and (eolp) (not (bolp))) (backward-char 1))
1556 (setq this-command 'viper-undo))
1558 ;; The following two functions are used to set up undo properly.
1559 ;; In VI, unlike Emacs, if you open a line, say, and add a bunch of lines,
1560 ;; they are undone all at once.
1561 (defun viper-adjust-undo ()
1562 (if viper-undo-needs-adjustment
1563 (let ((inhibit-quit t)
1565 (setq viper-undo-needs-adjustment nil)
1566 (if (listp buffer-undo-list)
1567 (if (setq tmp (memq viper-buffer-undo-list-mark buffer-undo-list))
1569 (setq tmp2 (cdr tmp)) ; the part after mark
1571 ;; cut tail from buffer-undo-list temporarily by direct
1572 ;; manipulation with pointers in buffer-undo-list
1575 (setq buffer-undo-list (delq nil buffer-undo-list))
1576 (setq buffer-undo-list
1577 (delq viper-buffer-undo-list-mark buffer-undo-list))
1578 ;; restore tail of buffer-undo-list
1579 (setq buffer-undo-list (nconc buffer-undo-list tmp2)))
1580 (setq buffer-undo-list (delq nil buffer-undo-list)))))
1584 (defun viper-set-complex-command-for-undo ()
1585 (if (listp buffer-undo-list)
1586 (if (not viper-undo-needs-adjustment)
1587 (let ((inhibit-quit t))
1588 (setq buffer-undo-list
1589 (cons viper-buffer-undo-list-mark buffer-undo-list))
1590 (setq viper-undo-needs-adjustment t)))))
1595 (defun viper-display-current-destructive-command ()
1596 (let ((text (nth 4 viper-d-com))
1597 (keys (nth 5 viper-d-com))
1600 (setq this-command 'viper-display-current-destructive-command)
1602 (message " `.' runs %s%s"
1603 (concat "`" (viper-array-to-string keys) "'")
1604 (viper-abbreviate-string
1607 (cond ((characterp text) (char-to-string text))
1608 ((stringp text) text)
1613 " inserting `" "'" " ......."))
1617 ;; don't change viper-d-com if it was viper-repeat command invoked with `.'
1618 ;; or in some other way (non-interactively).
1619 (defun viper-set-destructive-command (list)
1620 (or (eq viper-intermediate-command 'viper-repeat)
1622 (setq viper-d-com list)
1623 (setcar (nthcdr 5 viper-d-com)
1624 (viper-array-to-string (if (arrayp viper-this-command-keys)
1625 viper-this-command-keys
1626 (this-command-keys))))
1627 (viper-push-onto-ring viper-d-com 'viper-command-ring)))
1628 (setq viper-this-command-keys nil))
1630 (defun viper-prev-destructive-command (next)
1631 "Find previous destructive command in the history of destructive commands.
1632 With prefix argument, find next destructive command."
1634 (let (cmd viper-intermediate-command)
1635 (if (eq last-command 'viper-display-current-destructive-command)
1636 ;; repeated search through command history
1637 (setq viper-intermediate-command
1638 'repeating-display-destructive-command)
1639 ;; first search through command history--set temp ring
1640 (setq viper-temp-command-ring (copy-list viper-command-ring)))
1642 (viper-special-ring-rotate1 viper-temp-command-ring 1)
1643 (viper-special-ring-rotate1 viper-temp-command-ring -1)))
1646 (setq viper-d-com cmd))
1647 (viper-display-current-destructive-command)))
1649 (defun viper-next-destructive-command ()
1650 "Find next destructive command in the history of destructive commands."
1652 (viper-prev-destructive-command 'next))
1654 (defun viper-insert-prev-from-insertion-ring (arg)
1655 "Cycle through insertion ring in the direction of older insertions.
1656 Undoes previous insertion and inserts new.
1657 With prefix argument, cycles in the direction of newer elements.
1658 In minibuffer, this command executes whatever the invocation key is bound
1659 to in the global map, instead of cycling through the insertion ring."
1661 (let (viper-intermediate-command)
1662 (if (eq last-command 'viper-insert-from-insertion-ring)
1663 (progn ; repeated search through insertion history
1664 (setq viper-intermediate-command 'repeating-insertion-from-ring)
1665 (if (eq viper-current-state 'replace-state)
1667 (if viper-last-inserted-string-from-insertion-ring
1668 (backward-delete-char
1669 (length viper-last-inserted-string-from-insertion-ring))))
1671 ;;first search through insertion history
1672 (setq viper-temp-insertion-ring (copy-list viper-insertion-ring)))
1673 (setq this-command 'viper-insert-from-insertion-ring)
1674 ;; so that things will be undone properly
1675 (setq buffer-undo-list (cons nil buffer-undo-list))
1676 (setq viper-last-inserted-string-from-insertion-ring
1677 (viper-special-ring-rotate1 viper-temp-insertion-ring (if arg 1 -1)))
1679 ;; this change of viper-intermediate-command must come after
1680 ;; viper-special-ring-rotate1, so that the ring will rotate, but before the
1682 (setq viper-intermediate-command nil)
1683 (if viper-last-inserted-string-from-insertion-ring
1684 (insert viper-last-inserted-string-from-insertion-ring))
1687 (defun viper-insert-next-from-insertion-ring ()
1688 "Cycle through insertion ring in the direction of older insertions.
1689 Undo previous insertion and inserts new."
1691 (viper-insert-prev-from-insertion-ring 'next))
1694 ;; some region utilities
1696 ;; If at the last line of buffer, add \\n before eob, if newline is missing.
1697 (defun viper-add-newline-at-eob-if-necessary ()
1700 ;; make sure all lines end with newline, unless in the minibuffer or
1701 ;; when requested otherwise (require-final-newline is nil)
1704 require-final-newline
1705 (not (viper-is-in-minibuffer))
1706 (not buffer-read-only))
1709 (defun viper-yank-defun ()
1711 (copy-region-as-kill (point) (mark t)))
1713 ;; Enlarge region between BEG and END.
1714 (defun viper-enlarge-region (beg end)
1715 (or beg (setq beg end)) ; if beg is nil, set to end
1716 (or end (setq end beg)) ; if end is nil, set to beg
1719 (progn (goto-char beg) (set-mark end))
1723 (exchange-point-and-mark)
1724 (if (or (not (eobp)) (not (bolp))) (forward-line 1))
1725 (if (not (eobp)) (beginning-of-line))
1726 (if (> beg end) (exchange-point-and-mark)))
1729 ;; Quote region by each line with a user supplied string.
1730 (defun viper-quote-region ()
1731 (let ((quote-str viper-quote-string)
1732 (donot-change-dafault t))
1734 (viper-read-string-with-history
1737 'viper-quote-region-history
1738 (cond ((string-match "tex.*-mode" (symbol-name major-mode)) "%%")
1739 ((string-match "java.*-mode" (symbol-name major-mode)) "//")
1740 ((string-match "perl.*-mode" (symbol-name major-mode)) "#")
1741 ((string-match "lisp.*-mode" (symbol-name major-mode)) ";;")
1742 ((memq major-mode '(c-mode cc-mode c++-mode)) "//")
1743 ((memq major-mode '(sh-mode shell-mode)) "#")
1744 (t (setq donot-change-dafault nil)
1746 (or donot-change-dafault
1747 (setq viper-quote-string quote-str))
1748 (viper-enlarge-region (point) (mark t))
1749 (if (> (point) (mark t)) (exchange-point-and-mark))
1753 (while (and (< (point) (mark t)) (bolp))
1758 ;; Tells whether BEG is on the same line as END.
1759 ;; If one of the args is nil, it'll return nil.
1760 (defun viper-same-line (beg end)
1761 (let ((selective-display nil)
1764 (if (and beg end (> beg end))
1769 (cond ((or (> beg (point-max)) (> end (point-max))) ; out of range
1772 ;; This 'if' is needed because Emacs treats the next empty line
1773 ;; as part of the previous line.
1774 (if (= (viper-line-pos 'start) end)
1776 (<= (+ incr (count-lines beg end)) 1))))
1780 ;; Check if the string ends with a newline.
1781 (defun viper-end-with-a-newline-p (string)
1782 (or (string= string "")
1783 (= (viper-seq-last-elt string) ?\n)))
1785 (defun viper-tmp-insert-at-eob (msg)
1786 (let ((savemax (point-max)))
1790 (goto-char savemax) (delete-region (point) (point-max))
1795 ;;; Minibuffer business
1797 (defsubst viper-set-minibuffer-style ()
1798 (add-hook 'minibuffer-setup-hook 'viper-minibuffer-setup-sentinel))
1801 (defun viper-minibuffer-setup-sentinel ()
1802 (let ((hook (if viper-vi-style-in-minibuffer
1803 'viper-change-state-to-insert
1804 'viper-change-state-to-emacs)))
1808 ;; Interpret last event in the local map first; if fails, use exit-minibuffer.
1809 ;; Run viper-minibuffer-exit-hook before exiting.
1810 (defun viper-exit-minibuffer ()
1811 "Exit minibuffer Viper way."
1814 (setq command (local-key-binding (char-to-string last-command-char)))
1815 (run-hooks 'viper-minibuffer-exit-hook)
1817 (command-execute command)
1818 (exit-minibuffer))))
1821 (defcustom viper-smart-suffix-list
1822 '("" "tex" "c" "cc" "C" "el" "java" "html" "htm" "pl" "P" "p")
1823 "*List of suffixes that Viper tries to append to filenames ending with a `.'.
1824 This is useful when you the current directory contains files with the same
1825 prefix and many different suffixes. Usually, only one of the suffixes
1826 represents an editable file. However, file completion will stop at the `.'
1827 The smart suffix feature lets you hit RET in such a case, and Viper will
1828 select the appropriate suffix.
1830 Suffixes are tried in the order given and the first suffix for which a
1831 corresponding file exists is selected. If no file exists for any of the
1832 suffixes, the user is asked to confirm.
1834 To turn this feature off, set this variable to nil."
1835 :type '(repeat string)
1839 ;; Try to add a suitable suffix to files whose name ends with a `.'
1840 ;; Useful when the user hits RET on a non-completed file name.
1841 ;; Used as a minibuffer exit hook in read-file-name
1842 (defun viper-file-add-suffix ()
1844 (len (length viper-smart-suffix-list))
1845 (file (buffer-string))
1847 (goto-char (point-max))
1848 (if (and viper-smart-suffix-list (string-match "\\.$" file))
1850 (while (and (not found) (< count len))
1851 (setq suff (nth count viper-smart-suffix-list)
1854 (format "%s%s" (substitute-in-file-name file) suff))
1861 (viper-tmp-insert-at-eob " [Please complete file name]")
1863 (while (not (memq cmd
1864 '(exit-minibuffer viper-exit-minibuffer)))
1866 (key-binding (setq key (read-key-sequence nil))))
1867 (cond ((eq cmd 'self-insert-command)
1869 (insert (events-to-keys key))
1871 ((memq cmd '(exit-minibuffer viper-exit-minibuffer))
1873 (t (command-execute cmd)))
1878 (defun viper-minibuffer-trim-tail ()
1879 "Delete junk at the end of the first line of the minibuffer input.
1880 Remove this function from `viper-minibuffer-exit-hook', if this causes
1882 (if (viper-is-in-minibuffer)
1884 (goto-char (point-min))
1886 (delete-region (point) (point-max)))))
1889 ;;; Reading string with history
1891 (defun viper-read-string-with-history (prompt &optional initial
1892 history-var default keymap
1894 ;; Read string, prompting with PROMPT and inserting the INITIAL
1895 ;; value. Uses HISTORY-VAR. DEFAULT is the default value to accept if the
1896 ;; input is an empty string.
1897 ;; Default value is displayed until the user types something in the
1899 ;; KEYMAP is used, if given, instead of minibuffer-local-map.
1900 ;; INIT-MESSAGE is the message temporarily displayed after entering the
1902 (let ((minibuffer-setup-hook
1905 (if (stringp init-message)
1906 (viper-tmp-insert-at-eob init-message))
1907 (if (stringp initial)
1909 ;; don't wait if we have unread events or in kbd macro
1910 (or unread-command-events
1915 (viper-minibuffer-setup-sentinel))))
1920 (setq keymap (or keymap minibuffer-local-map)
1921 initial (or initial "")
1922 temp-msg (if default
1923 (format "(default: %s) " default)
1926 (setq viper-incomplete-ex-cmd nil)
1927 (setq val (read-from-minibuffer prompt
1928 (concat temp-msg initial val padding)
1929 keymap nil history-var))
1930 (setq minibuffer-setup-hook nil
1931 padding (viper-array-to-string (this-command-keys))
1933 ;; the following tries to be smart about what to put in history
1934 (if (not (string= val (car (eval history-var))))
1935 (set history-var (cons val (eval history-var))))
1936 (if (or (string= (nth 0 (eval history-var)) (nth 1 (eval history-var)))
1937 (string= (nth 0 (eval history-var)) ""))
1938 (set history-var (cdr (eval history-var))))
1939 ;; If the user enters nothing but the prev cmd wasn't viper-ex,
1940 ;; viper-command-argument, or `! shell-command', this probably means
1941 ;; that the user typed something then erased. Return "" in this case, not
1942 ;; the default---the default is too confusing in this case.
1943 (cond ((and (string= val "")
1944 (not (string= prompt "!")) ; was a `! shell-command'
1945 (not (memq last-command
1947 viper-command-argument
1951 ((string= val "") (or default ""))
1957 ;; insertion commands
1959 ;; Called when state changes from Insert Vi command mode.
1960 ;; Repeats the insertion command if Insert state was entered with prefix
1962 (defun viper-repeat-insert-command ()
1963 (let ((i-com (car viper-d-com))
1964 (val (nth 1 viper-d-com))
1965 (char (nth 2 viper-d-com)))
1966 (if (and val (> val 1)) ; first check that val is non-nil
1968 (setq viper-d-com (list i-com (1- val) ?r nil nil nil))
1970 (setq viper-d-com (list i-com val char nil nil nil))
1973 (defun viper-insert (arg)
1974 "Insert before point."
1976 (viper-set-complex-command-for-undo)
1977 (let ((val (viper-p-val arg))
1978 (com (viper-getcom arg)))
1979 (viper-set-destructive-command (list 'viper-insert val ?r nil nil nil))
1981 (viper-loop val (viper-yank-last-insertion))
1982 (viper-change-state-to-insert))))
1984 (defun viper-append (arg)
1985 "Append after point."
1987 (viper-set-complex-command-for-undo)
1988 (let ((val (viper-p-val arg))
1989 (com (viper-getcom arg)))
1990 (viper-set-destructive-command (list 'viper-append val ?r nil nil nil))
1991 (if (not (eolp)) (forward-char))
1993 (viper-loop val (viper-yank-last-insertion))
1994 (viper-change-state-to-insert))))
1996 (defun viper-Append (arg)
1997 "Append at end of line."
1999 (viper-set-complex-command-for-undo)
2000 (let ((val (viper-p-val arg))
2001 (com (viper-getcom arg)))
2002 (viper-set-destructive-command (list 'viper-Append val ?r nil nil nil))
2005 (viper-loop val (viper-yank-last-insertion))
2006 (viper-change-state-to-insert))))
2008 (defun viper-Insert (arg)
2009 "Insert before first non-white."
2011 (viper-set-complex-command-for-undo)
2012 (let ((val (viper-p-val arg))
2013 (com (viper-getcom arg)))
2014 (viper-set-destructive-command (list 'viper-Insert val ?r nil nil nil))
2015 (back-to-indentation)
2017 (viper-loop val (viper-yank-last-insertion))
2018 (viper-change-state-to-insert))))
2020 (defun viper-open-line (arg)
2023 (viper-set-complex-command-for-undo)
2024 (let ((val (viper-p-val arg))
2025 (com (viper-getcom arg)))
2026 (viper-set-destructive-command (list 'viper-open-line val ?r nil nil nil))
2027 (let ((col (current-indentation)))
2032 (if viper-auto-indent
2035 (if viper-electric-mode
2036 (indent-according-to-mode)
2039 (viper-yank-last-insertion))
2042 (if viper-auto-indent
2045 (if viper-electric-mode
2046 (indent-according-to-mode)
2048 (viper-change-state-to-insert)))))
2050 (defun viper-Open-line (arg)
2053 (viper-set-complex-command-for-undo)
2054 (let ((val (viper-p-val arg))
2055 (com (viper-getcom arg)))
2056 (viper-set-destructive-command (list 'viper-Open-line val ?r nil nil nil))
2057 (let ((col (current-indentation)))
2062 (if viper-auto-indent
2065 (if viper-electric-mode
2066 (indent-according-to-mode)
2069 (viper-yank-last-insertion))
2072 (if viper-auto-indent
2075 (if viper-electric-mode
2076 (indent-according-to-mode)
2079 (viper-change-state-to-insert)))))
2081 (defun viper-open-line-at-point (arg)
2082 "Open line at point."
2084 (viper-set-complex-command-for-undo)
2085 (let ((val (viper-p-val arg))
2086 (com (viper-getcom arg)))
2087 (viper-set-destructive-command
2088 (list 'viper-open-line-at-point val ?r nil nil nil))
2092 (viper-yank-last-insertion))
2094 (viper-change-state-to-insert))))
2096 (defun viper-substitute (arg)
2097 "Substitute characters."
2099 (let ((val (viper-p-val arg))
2100 (com (viper-getcom arg)))
2104 (viper-change-subr (mark t) (point))
2105 (viper-change (mark t) (point)))
2106 (viper-set-destructive-command (list 'viper-substitute val ?r nil nil nil))
2109 ;; Command bound to S
2110 (defun viper-substitute-line (arg)
2113 (viper-set-complex-command-for-undo)
2114 (viper-line (cons arg ?C)))
2116 ;; Prepare for replace
2117 (defun viper-start-replace ()
2118 (setq viper-began-as-replace t
2119 viper-sitting-in-replace t
2120 viper-replace-chars-to-delete 0)
2122 'viper-after-change-functions 'viper-replace-mode-spy-after t 'local)
2124 'viper-before-change-functions 'viper-replace-mode-spy-before t 'local)
2125 ;; this will get added repeatedly, but no harm
2126 (add-hook 'after-change-functions 'viper-after-change-sentinel t)
2127 (add-hook 'before-change-functions 'viper-before-change-sentinel t)
2128 (viper-move-marker-locally
2129 'viper-last-posn-in-replace-region (viper-replace-start))
2131 'viper-post-command-hooks 'viper-replace-state-post-command-sentinel
2134 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel t 'local)
2135 ;; guard against a smartie who switched from R-replace to normal replace
2137 'viper-post-command-hooks 'viper-R-state-post-command-sentinel 'local)
2138 (if overwrite-mode (overwrite-mode nil))
2142 (defun viper-replace-mode-spy-before (beg end)
2143 (setq viper-replace-region-chars-deleted (viper-chars-in-region beg end))
2146 ;; Invoked as an after-change-function to calculate how many chars have to be
2147 ;; deleted. This function may be called several times within a single command,
2148 ;; if this command performs several separate buffer changes. Therefore, if adds
2149 ;; up the number of chars inserted and subtracts the number of chars deleted.
2150 (defun viper-replace-mode-spy-after (beg end length)
2151 (if (memq viper-intermediate-command
2152 '(dabbrev-expand repeating-insertion-from-ring))
2153 ;; Take special care of text insertion from insertion ring inside
2154 ;; replacement overlays.
2156 (setq viper-replace-chars-to-delete 0)
2157 (viper-move-marker-locally
2158 'viper-last-posn-in-replace-region (point)))
2160 (let* ((real-end (min end (viper-replace-end)))
2161 (column-shift (- (save-excursion (goto-char real-end)
2163 (save-excursion (goto-char beg)
2168 (setq chars-deleted viper-replace-region-chars-deleted))
2169 (setq viper-replace-region-chars-deleted 0)
2170 (setq viper-replace-chars-to-delete
2171 (+ viper-replace-chars-to-delete
2173 ;; if column shift is bigger, due to a TAB insertion, take
2174 ;; column-shift instead of the number of inserted chars
2175 (max (viper-chars-in-region beg real-end)
2176 ;; This test accounts for Chinese/Japanese/... chars,
2177 ;; which occupy 2 columns instead of one. If we use
2178 ;; column-shift here, we may delete two chars instead of
2179 ;; one when the user types one Chinese character. Deleting
2180 ;; two would be OK, if they were European chars, but it is
2181 ;; not OK if they are Chinese chars. Since it is hard to
2182 ;; figure out which characters are being deleted in any
2183 ;; given region, we decided to treat Eastern and European
2184 ;; characters equally, even though Eastern chars may
2185 ;; occupy more columns.
2186 (if (memq this-command '(self-insert-command
2187 quoted-insert viper-insert-tab))
2190 ;; the number of deleted chars
2193 (viper-move-marker-locally
2194 'viper-last-posn-in-replace-region
2195 (max (if (> end (viper-replace-end)) (viper-replace-end) end)
2196 (or (marker-position viper-last-posn-in-replace-region)
2197 (viper-replace-start))
2202 ;; Make sure we don't delete more than needed.
2203 ;; This is executed at viper-last-posn-in-replace-region
2204 (defsubst viper-trim-replace-chars-to-delete-if-necessary ()
2205 (setq viper-replace-chars-to-delete
2207 (min viper-replace-chars-to-delete
2208 ;; Don't delete more than to the end of repl overlay
2209 (viper-chars-in-region
2210 (viper-replace-end) viper-last-posn-in-replace-region)
2211 ;; point is viper-last-posn-in-replace-region now
2212 ;; So, this limits deletion to the end of line
2213 (viper-chars-in-region (point) (viper-line-pos 'end))
2217 ;; Delete stuff between viper-last-posn-in-replace-region and the end of
2218 ;; viper-replace-overlay-marker, if viper-last-posn-in-replace-region is within
2219 ;; the overlay and current point is before the end of the overlay.
2220 ;; Don't delete anything if current point is past the end of the overlay.
2221 (defun viper-finish-change ()
2223 'viper-after-change-functions 'viper-replace-mode-spy-after 'local)
2225 'viper-before-change-functions 'viper-replace-mode-spy-before 'local)
2227 'viper-post-command-hooks 'viper-replace-state-post-command-sentinel 'local)
2229 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel 'local)
2230 (viper-restore-cursor-color-after-replace)
2231 (setq viper-sitting-in-replace nil) ; just in case we'll need to know it
2233 (if (and viper-replace-overlay
2234 (viper-pos-within-region viper-last-posn-in-replace-region
2235 (viper-replace-start)
2236 (viper-replace-end))
2237 (< (point) (viper-replace-end)))
2239 viper-last-posn-in-replace-region (viper-replace-end))))
2241 (if (eq viper-current-state 'replace-state)
2242 (viper-downgrade-to-insert))
2243 ;; replace mode ended => nullify viper-last-posn-in-replace-region
2244 (viper-move-marker-locally 'viper-last-posn-in-replace-region nil)
2245 (viper-hide-replace-overlay)
2246 (viper-refresh-mode-line)
2247 (viper-put-string-on-kill-ring viper-last-replace-region)
2250 ;; Make STRING be the first element of the kill ring.
2251 (defun viper-put-string-on-kill-ring (string)
2252 (setq kill-ring (cons string kill-ring))
2253 (if (> (length kill-ring) kill-ring-max)
2254 (setcdr (nthcdr (1- kill-ring-max) kill-ring) nil))
2255 (setq kill-ring-yank-pointer kill-ring))
2257 (defun viper-finish-R-mode ()
2259 'viper-post-command-hooks 'viper-R-state-post-command-sentinel 'local)
2261 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel 'local)
2262 (viper-downgrade-to-insert))
2264 (defun viper-start-R-mode ()
2265 ;; Leave arg as 1, not t: XEmacs insists that it must be a pos number
2268 'viper-post-command-hooks 'viper-R-state-post-command-sentinel t 'local)
2270 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel t 'local)
2271 ;; guard against a smartie who switched from R-replace to normal replace
2273 'viper-post-command-hooks 'viper-replace-state-post-command-sentinel 'local)
2278 (defun viper-replace-state-exit-cmd ()
2279 "Binding for keys that cause Replace state to switch to Vi or to Insert.
2280 These keys are ESC, RET, and LineFeed"
2282 (if overwrite-mode ; if in replace mode invoked via 'R'
2283 (viper-finish-R-mode)
2284 (viper-finish-change))
2286 (if (eq this-command 'viper-intercept-ESC-key)
2287 (setq com 'viper-exit-insert-state)
2288 (viper-set-unread-command-events last-input-char)
2289 (setq com (key-binding (read-key-sequence nil))))
2291 (condition-case conds
2292 (command-execute com)
2294 (viper-message-conditions conds)))
2296 (viper-hide-replace-overlay))
2299 (defun viper-replace-state-carriage-return ()
2300 "Carriage return in Viper replace state."
2302 ;; If Emacs start supporting overlay maps, as it currently supports
2303 ;; text-property maps, we could do away with viper-replace-minor-mode and
2304 ;; just have keymap attached to replace overlay. Then the "if part" of this
2305 ;; statement can be deleted.
2306 (if (or (< (point) (viper-replace-start))
2307 (> (point) (viper-replace-end)))
2308 (let (viper-replace-minor-mode com)
2309 (viper-set-unread-command-events last-input-char)
2310 (setq com (key-binding (read-key-sequence nil)))
2311 (condition-case conds
2312 (command-execute com)
2314 (viper-message-conditions conds))))
2315 (if (not viper-allow-multiline-replace-regions)
2316 (viper-replace-state-exit-cmd)
2317 (if (viper-same-line (point) (viper-replace-end))
2318 (viper-replace-state-exit-cmd)
2319 ;; delete the rest of line
2320 (delete-region (point) (viper-line-pos 'end))
2323 (if (eobp) (error "Last line in buffer")))
2324 ;; skip to the next line
2326 (back-to-indentation)
2330 ;; This is the function bound to 'R'---unlimited replace.
2331 ;; Similar to Emacs's own overwrite-mode.
2332 (defun viper-overwrite (arg)
2333 "Begin overwrite mode."
2335 (let ((val (viper-p-val arg))
2336 (com (viper-getcom arg)) (len))
2337 (viper-set-destructive-command (list 'viper-overwrite val ?r nil nil nil))
2340 ;; Viper saves inserted text in viper-last-insertion
2341 (setq len (length viper-last-insertion))
2343 (viper-loop val (viper-yank-last-insertion)))
2344 (setq last-command 'viper-overwrite)
2345 (viper-set-complex-command-for-undo)
2346 (viper-set-replace-overlay (point) (viper-line-pos 'end))
2347 (viper-change-state-to-replace)
2353 (defun viper-line (arg)
2354 (let ((val (car arg))
2356 (viper-move-marker-locally 'viper-com-point (point))
2358 (viper-next-line-carefully (1- val)))
2359 ;; this ensures that dd, cc, D, yy will do the right thing on the last
2360 ;; line of buffer when this line has no \n.
2361 (viper-add-newline-at-eob-if-necessary)
2362 (viper-execute-com 'viper-line val com))
2363 (if (and (eobp) (not (bobp))) (forward-line -1))
2366 (defun viper-yank-line (arg)
2367 "Yank ARG lines (in Vi's sense)."
2369 (let ((val (viper-p-val arg)))
2370 (viper-line (cons val ?Y))))
2375 (defun viper-region (arg)
2376 "Execute command on a region."
2378 (let ((val (viper-P-val arg))
2379 (com (viper-getcom arg)))
2380 (viper-move-marker-locally 'viper-com-point (point))
2381 (exchange-point-and-mark)
2382 (viper-execute-com 'viper-region val com)))
2384 (defun viper-Region (arg)
2385 "Execute command on a Region."
2387 (let ((val (viper-P-val arg))
2388 (com (viper-getCom arg)))
2389 (viper-move-marker-locally 'viper-com-point (point))
2390 (exchange-point-and-mark)
2391 (viper-execute-com 'viper-Region val com)))
2393 (defun viper-replace-char (arg)
2394 "Replace the following ARG chars by the character read."
2396 (if (and (eolp) (bolp)) (error "No character to replace here"))
2397 (let ((val (viper-p-val arg))
2398 (com (viper-getcom arg)))
2399 (viper-replace-char-subr com val)
2400 (if (and (eolp) (not (bolp))) (forward-char 1))
2401 (setq viper-this-command-keys
2402 (format "%sr" (if (integerp arg) arg "")))
2403 (viper-set-destructive-command
2404 (list 'viper-replace-char val ?r nil viper-d-char nil))
2407 (defun viper-replace-char-subr (com arg)
2409 (setq char (if (equal com ?r)
2412 (let (inhibit-quit) ; preserve consistency of undo-list and iso-accents
2413 (if (and viper-automatic-iso-accents (memq char '(?' ?\" ?^ ?~)))
2414 ;; get European characters
2416 (viper-set-iso-accents-mode t)
2417 (viper-set-unread-command-events char)
2418 (setq char (aref (read-key-sequence nil) 0))
2419 (viper-set-iso-accents-mode nil)))
2420 (viper-set-complex-command-for-undo)
2421 (if (eq char ?\C-m) (setq char ?\n))
2422 (if (and viper-special-input-method (fboundp 'quail-start-translation))
2423 ;; get Intl. characters
2425 (viper-set-input-method t)
2426 (setq last-command-event
2428 (if viper-xemacs-p (character-to-event char) char)))
2434 (quail-start-translation 1)
2435 (quail-start-translation)))
2437 ;; quail translation failed
2438 (if (and (not (stringp quail-current-str))
2439 (not (viper-characterp quail-current-str)))
2444 (viper-set-input-method nil)
2445 (error "Composing character failed, changes undone")))
2446 ;; quail translation seems ok
2448 ;;(setq char quail-current-str))
2449 (setq char (viper-char-at-pos 'backward)))
2450 (setq viper-d-char char)
2451 (viper-loop (1- (if (> arg 0) arg (- arg)))
2454 (viper-set-input-method nil))
2456 (setq viper-d-char char)
2457 (viper-loop (if (> arg 0) arg (- arg))
2460 (backward-char arg))))
2463 ;; basic cursor movement. j, k, l, h commands.
2465 (defun viper-forward-char (arg)
2466 "Move point right ARG characters (left if ARG negative).
2467 On reaching end of line, stop and signal error."
2469 (viper-leave-region-active)
2470 (let ((val (viper-p-val arg))
2471 (com (viper-getcom arg)))
2472 (if com (viper-move-marker-locally 'viper-com-point (point)))
2473 (if viper-ex-style-motion
2475 ;; the boundary condition check gets weird here because
2476 ;; forward-char may be the parameter of a delete, and 'dl' works
2477 ;; just like 'x' for the last char on a line, so we have to allow
2478 ;; the forward motion before the 'viper-execute-com', but, of
2479 ;; course, 'dl' doesn't work on an empty line, so we have to
2480 ;; catch that condition before 'viper-execute-com'
2481 (if (and (eolp) (bolp)) (error "") (forward-char val))
2482 (if com (viper-execute-com 'viper-forward-char val com))
2483 (if (eolp) (progn (backward-char 1) (error ""))))
2485 (if com (viper-execute-com 'viper-forward-char val com)))))
2487 (defun viper-backward-char (arg)
2488 "Move point left ARG characters (right if ARG negative).
2489 On reaching beginning of line, stop and signal error."
2491 (viper-leave-region-active)
2492 (let ((val (viper-p-val arg))
2493 (com (viper-getcom arg)))
2494 (if com (viper-move-marker-locally 'viper-com-point (point)))
2495 (if viper-ex-style-motion
2497 (if (bolp) (error "") (backward-char val))
2498 (if com (viper-execute-com 'viper-backward-char val com)))
2500 (if com (viper-execute-com 'viper-backward-char val com)))))
2502 ;; Like forward-char, but doesn't move at end of buffer.
2503 ;; Returns distance traveled
2504 ;; (positive or 0, if arg positive; negative if arg negative).
2505 (defun viper-forward-char-carefully (&optional arg)
2506 (setq arg (or arg 1))
2511 (if (< (point) pt) ; arg was negative
2512 (- (viper-chars-in-region pt (point)))
2513 (viper-chars-in-region pt (point)))))
2515 ;; Like backward-char, but doesn't move at beg of buffer.
2516 ;; Returns distance traveled
2517 ;; (negative or 0, if arg positive; positive if arg negative).
2518 (defun viper-backward-char-carefully (&optional arg)
2519 (setq arg (or arg 1))
2524 (if (> (point) pt) ; arg was negative
2525 (viper-chars-in-region pt (point))
2526 (- (viper-chars-in-region pt (point))))))
2528 (defun viper-next-line-carefully (arg)
2537 ;; Words are formed from alpha's and nonalphas - <sp>,\t\n are separators for
2538 ;; word movement. When executed with a destructive command, \n is usually left
2539 ;; untouched for the last word. Viper uses syntax table to determine what is a
2540 ;; word and what is a separator. However, \n is always a separator. Also, if
2541 ;; viper-syntax-preference is 'vi, then `_' is part of the word.
2544 (defun viper-skip-separators (forward)
2547 (viper-skip-all-separators-forward 'within-line)
2548 (if (looking-at "\n")
2551 (viper-skip-all-separators-forward 'within-line))))
2552 ;; check for eob and white space before it. move off of eob
2553 (if (and (eobp) (save-excursion
2554 (viper-backward-char-carefully)
2555 (viper-looking-at-separator)))
2556 (viper-backward-char-carefully))
2557 (viper-skip-all-separators-backward 'within-line)
2558 (viper-backward-char-carefully)
2559 (if (looking-at "\n")
2560 (viper-skip-all-separators-backward 'within-line)
2561 (or (bobp) (forward-char)))))
2563 (defun viper-forward-word-kernel (val)
2565 (cond ((viper-looking-at-alpha)
2566 (viper-skip-alpha-forward "_")
2567 (viper-skip-separators t))
2568 ((viper-looking-at-separator)
2569 (viper-skip-separators t))
2570 ((not (viper-looking-at-alphasep))
2571 (viper-skip-nonalphasep-forward)
2572 (viper-skip-separators t)))
2573 (setq val (1- val))))
2575 ;; first skip non-newline separators backward, then skip \n. Then, if TWICE is
2576 ;; non-nil, skip non-\n back again, but don't overshoot the limit LIM.
2577 (defun viper-separator-skipback-special (twice lim)
2578 (let ((prev-char (viper-char-at-pos 'backward))
2579 (saved-point (point)))
2580 ;; skip non-newline separators backward
2581 (while (and (not (memq prev-char '(nil \n)))
2583 ;; must be non-newline separator
2584 (if (eq viper-syntax-preference 'strict-vi)
2585 (memq prev-char '(?\ ?\t))
2586 (memq (char-syntax prev-char) '(?\ ?-))))
2587 (viper-backward-char-carefully)
2588 (setq prev-char (viper-char-at-pos 'backward)))
2590 (if (and (< lim (point)) (eq prev-char ?\n))
2592 ;; If we skipped to the next word and the prefix of this line doesn't
2593 ;; consist of separators preceded by a newline, then don't skip backwards
2595 (goto-char saved-point))
2596 (setq prev-char (viper-char-at-pos 'backward))
2598 ;; skip again, but make sure we don't overshoot the limit
2600 (while (and (not (memq prev-char '(nil \n)))
2602 ;; must be non-newline separator
2603 (if (eq viper-syntax-preference 'strict-vi)
2604 (memq prev-char '(?\ ?\t))
2605 (memq (char-syntax prev-char) '(?\ ?-))))
2606 (viper-backward-char-carefully)
2607 (setq prev-char (viper-char-at-pos 'backward))))
2610 (viper-forward-char-carefully))
2614 (defun viper-forward-word (arg)
2617 (viper-leave-region-active)
2618 (let ((val (viper-p-val arg))
2619 (com (viper-getcom arg)))
2620 (if com (viper-move-marker-locally 'viper-com-point (point)))
2621 (viper-forward-word-kernel val)
2623 (cond ((memq com (list ?c (- ?c)))
2624 (viper-separator-skipback-special 'twice viper-com-point))
2625 ;; Yank words including the whitespace, but not newline
2626 ((memq com (list ?y (- ?y)))
2627 (viper-separator-skipback-special nil viper-com-point))
2628 ((viper-dotable-command-p com)
2629 (viper-separator-skipback-special nil viper-com-point)))
2630 (viper-execute-com 'viper-forward-word val com)))))
2633 (defun viper-forward-Word (arg)
2634 "Forward word delimited by white characters."
2636 (viper-leave-region-active)
2637 (let ((val (viper-p-val arg))
2638 (com (viper-getcom arg)))
2639 (if com (viper-move-marker-locally 'viper-com-point (point)))
2641 (viper-skip-nonseparators 'forward)
2642 (viper-skip-separators t))
2644 (cond ((memq com (list ?c (- ?c)))
2645 (viper-separator-skipback-special 'twice viper-com-point))
2646 ;; Yank words including the whitespace, but not newline
2647 ((memq com (list ?y (- ?y)))
2648 (viper-separator-skipback-special nil viper-com-point))
2649 ((viper-dotable-command-p com)
2650 (viper-separator-skipback-special nil viper-com-point)))
2651 (viper-execute-com 'viper-forward-Word val com)))))
2654 ;; this is a bit different from Vi, but Vi's end of word
2655 ;; makes no sense whatsoever
2656 (defun viper-end-of-word-kernel ()
2657 (if (viper-end-of-word-p) (forward-char))
2658 (if (viper-looking-at-separator)
2659 (viper-skip-all-separators-forward))
2661 (cond ((viper-looking-at-alpha) (viper-skip-alpha-forward "_"))
2662 ((not (viper-looking-at-alphasep)) (viper-skip-nonalphasep-forward)))
2663 (viper-backward-char-carefully))
2665 (defun viper-end-of-word-p ()
2668 (cond ((viper-looking-at-alpha)
2670 (not (viper-looking-at-alpha)))
2671 ((not (viper-looking-at-alphasep))
2673 (viper-looking-at-alphasep))))))
2676 (defun viper-end-of-word (arg &optional careful)
2677 "Move point to end of current word."
2679 (viper-leave-region-active)
2680 (let ((val (viper-p-val arg))
2681 (com (viper-getcom arg)))
2682 (if com (viper-move-marker-locally 'viper-com-point (point)))
2683 (viper-loop val (viper-end-of-word-kernel))
2687 (viper-execute-com 'viper-end-of-word val com)))))
2689 (defun viper-end-of-Word (arg)
2690 "Forward to end of word delimited by white character."
2692 (viper-leave-region-active)
2693 (let ((val (viper-p-val arg))
2694 (com (viper-getcom arg)))
2695 (if com (viper-move-marker-locally 'viper-com-point (point)))
2697 (viper-end-of-word-kernel)
2698 (viper-skip-nonseparators 'forward)
2703 (viper-execute-com 'viper-end-of-Word val com)))))
2705 (defun viper-backward-word-kernel (val)
2707 (viper-backward-char-carefully)
2708 (cond ((viper-looking-at-alpha)
2709 (viper-skip-alpha-backward "_"))
2710 ((viper-looking-at-separator)
2712 (viper-skip-separators nil)
2713 (viper-backward-char-carefully)
2714 (cond ((viper-looking-at-alpha)
2715 (viper-skip-alpha-backward "_"))
2716 ((not (viper-looking-at-alphasep))
2717 (viper-skip-nonalphasep-backward))
2718 ((bobp)) ; could still be at separator, but at beg of buffer
2719 (t (forward-char))))
2720 ((not (viper-looking-at-alphasep))
2721 (viper-skip-nonalphasep-backward)))
2722 (setq val (1- val))))
2724 (defun viper-backward-word (arg)
2727 (viper-leave-region-active)
2728 (let ((val (viper-p-val arg))
2729 (com (viper-getcom arg)))
2732 (if (setq i (save-excursion (backward-char) (looking-at "\n")))
2734 (viper-move-marker-locally 'viper-com-point (point))
2735 (if i (forward-char))))
2736 (viper-backward-word-kernel val)
2737 (if com (viper-execute-com 'viper-backward-word val com))))
2739 (defun viper-backward-Word (arg)
2740 "Backward word delimited by white character."
2742 (viper-leave-region-active)
2743 (let ((val (viper-p-val arg))
2744 (com (viper-getcom arg)))
2747 (if (setq i (save-excursion (backward-char) (looking-at "\n")))
2749 (viper-move-marker-locally 'viper-com-point (point))
2750 (if i (forward-char))))
2752 (viper-skip-separators nil) ; nil means backward here
2753 (viper-skip-nonseparators 'backward))
2754 (if com (viper-execute-com 'viper-backward-Word val com))))
2760 (defun viper-beginning-of-line (arg)
2761 "Go to beginning of line."
2763 (viper-leave-region-active)
2764 (let ((val (viper-p-val arg))
2765 (com (viper-getcom arg)))
2766 (if com (viper-move-marker-locally 'viper-com-point (point)))
2767 (beginning-of-line val)
2768 (if com (viper-execute-com 'viper-beginning-of-line val com))))
2770 (defun viper-bol-and-skip-white (arg)
2771 "Beginning of line at first non-white character."
2773 (viper-leave-region-active)
2774 (let ((val (viper-p-val arg))
2775 (com (viper-getcom arg)))
2776 (if com (viper-move-marker-locally 'viper-com-point (point)))
2777 (forward-to-indentation (1- val))
2778 (if com (viper-execute-com 'viper-bol-and-skip-white val com))))
2780 (defun viper-goto-eol (arg)
2781 "Go to end of line."
2783 (viper-leave-region-active)
2784 (let ((val (viper-p-val arg))
2785 (com (viper-getcom arg)))
2786 (if com (viper-move-marker-locally 'viper-com-point (point)))
2788 (if com (viper-execute-com 'viper-goto-eol val com))
2789 (if viper-ex-style-motion
2790 (if (and (eolp) (not (bolp))
2791 ;; a fix for viper-change-to-eol
2792 (not (equal viper-current-state 'insert-state)))
2797 (defun viper-goto-col (arg)
2798 "Go to ARG's column."
2800 (viper-leave-region-active)
2801 (let ((val (viper-p-val arg))
2802 (com (viper-getcom arg))
2805 (viper-chars-in-region
2806 (viper-line-pos 'start) (viper-line-pos 'end)))
2807 (if com (viper-move-marker-locally 'viper-com-point (point)))
2809 (forward-char (1- (min line-len val)))
2810 (while (> (current-column) (1- val))
2812 (if com (viper-execute-com 'viper-goto-col val com))
2815 (if (> val (current-column)) (error "")))
2819 (defun viper-next-line (arg)
2822 (viper-leave-region-active)
2823 (let ((val (viper-p-val arg))
2824 (com (viper-getCom arg)))
2825 (if com (viper-move-marker-locally 'viper-com-point (point)))
2827 (if viper-ex-style-motion
2828 (if (and (eolp) (not (bolp))) (backward-char 1)))
2829 (setq this-command 'next-line)
2830 (if com (viper-execute-com 'viper-next-line val com))))
2832 (defun viper-next-line-at-bol (arg)
2833 "Next line at beginning of line."
2835 (viper-leave-region-active)
2838 (if (eobp) (error "Last line in buffer")))
2839 (let ((val (viper-p-val arg))
2840 (com (viper-getCom arg)))
2841 (if com (viper-move-marker-locally 'viper-com-point (point)))
2843 (back-to-indentation)
2844 (if com (viper-execute-com 'viper-next-line-at-bol val com))))
2846 (defun viper-previous-line (arg)
2847 "Go to previous line."
2849 (viper-leave-region-active)
2850 (let ((val (viper-p-val arg))
2851 (com (viper-getCom arg)))
2852 (if com (viper-move-marker-locally 'viper-com-point (point)))
2854 (if viper-ex-style-motion
2855 (if (and (eolp) (not (bolp))) (backward-char 1)))
2856 (setq this-command 'previous-line)
2857 (if com (viper-execute-com 'viper-previous-line val com))))
2860 (defun viper-previous-line-at-bol (arg)
2861 "Previous line at beginning of line."
2863 (viper-leave-region-active)
2866 (if (bobp) (error "First line in buffer")))
2867 (let ((val (viper-p-val arg))
2868 (com (viper-getCom arg)))
2869 (if com (viper-move-marker-locally 'viper-com-point (point)))
2870 (forward-line (- val))
2871 (back-to-indentation)
2872 (if com (viper-execute-com 'viper-previous-line val com))))
2874 (defun viper-change-to-eol (arg)
2875 "Change to end of line."
2877 (viper-goto-eol (cons arg ?c)))
2879 (defun viper-kill-line (arg)
2882 (viper-goto-eol (cons arg ?d)))
2884 (defun viper-erase-line (arg)
2887 (viper-beginning-of-line (cons arg ?d)))
2892 (defun viper-goto-line (arg)
2893 "Go to ARG's line. Without ARG go to end of buffer."
2895 (let ((val (viper-P-val arg))
2896 (com (viper-getCom arg)))
2897 (viper-move-marker-locally 'viper-com-point (point))
2898 (viper-deactivate-mark)
2901 (goto-char (point-max))
2902 (goto-char (point-min))
2903 (forward-line (1- val)))
2905 ;; positioning is done twice: before and after command execution
2906 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
2907 (back-to-indentation)
2909 (if com (viper-execute-com 'viper-goto-line val com))
2911 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
2912 (back-to-indentation)
2915 ;; Find ARG's occurrence of CHAR on the current line.
2916 ;; If FORWARD then search is forward, otherwise backward. OFFSET is used to
2917 ;; adjust point after search.
2918 (defun viper-find-char (arg char forward offset)
2919 (or (char-or-string-p char) (error ""))
2920 (let ((arg (if forward arg (- arg)))
2921 (cmd (if (eq viper-intermediate-command 'viper-repeat)
2923 (viper-array-to-string (this-command-keys))))
2924 point region-beg region-end)
2927 (if (> arg 0) ; forward
2929 (setq region-beg (point))
2930 (if viper-allow-multiline-replace-regions
2931 (viper-forward-paragraph 1)
2933 (setq region-end (point)))
2934 (setq region-end (point))
2935 (if viper-allow-multiline-replace-regions
2936 (viper-backward-paragraph 1)
2937 (beginning-of-line))
2938 (setq region-beg (point)))
2939 (if (or (and (< arg 0)
2940 (< (- region-end region-beg)
2941 (if viper-allow-multiline-replace-regions
2945 (< (- region-end region-beg)
2946 (if viper-allow-multiline-replace-regions
2949 (error "Command `%s': At %s of %s"
2951 (if (> arg 0) "end" "beginning")
2952 (if viper-allow-multiline-replace-regions
2953 "paragraph" "line")))
2954 (narrow-to-region region-beg region-end)
2955 ;; if arg > 0, point is forwarded before search.
2956 (if (> arg 0) (goto-char (1+ (point-min)))
2957 (goto-char (point-max)))
2958 (if (let ((case-fold-search nil))
2959 (search-forward (char-to-string char) nil 0 arg))
2960 (setq point (point))
2961 (error "Command `%s': `%c' not found" cmd char))))
2964 (backward-char (if offset 2 1))
2965 (forward-char (if offset 1 0)))))
2967 (defun viper-find-char-forward (arg)
2968 "Find char on the line.
2969 If called interactively read the char to find from the terminal, and if
2970 called from viper-repeat, the char last used is used. This behaviour is
2971 controlled by the sign of prefix numeric value."
2973 (let ((val (viper-p-val arg))
2974 (com (viper-getcom arg))
2975 (cmd-representation (nth 5 viper-d-com)))
2977 ;; this means that the function was called interactively
2978 (setq viper-f-char (read-char)
2981 ;; viper-repeat --- set viper-F-char from command-keys
2982 (setq viper-F-char (if (stringp cmd-representation)
2983 (viper-seq-last-elt cmd-representation)
2985 viper-f-char viper-F-char)
2987 (if com (viper-move-marker-locally 'viper-com-point (point)))
2989 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) t nil)
2993 (setq viper-F-char viper-f-char) ; set new viper-F-char
2995 (viper-execute-com 'viper-find-char-forward val com)))))
2997 (defun viper-goto-char-forward (arg)
2998 "Go up to char ARG forward on line."
3000 (let ((val (viper-p-val arg))
3001 (com (viper-getcom arg))
3002 (cmd-representation (nth 5 viper-d-com)))
3004 ;; this means that the function was called interactively
3005 (setq viper-f-char (read-char)
3008 ;; viper-repeat --- set viper-F-char from command-keys
3009 (setq viper-F-char (if (stringp cmd-representation)
3010 (viper-seq-last-elt cmd-representation)
3012 viper-f-char viper-F-char)
3014 (if com (viper-move-marker-locally 'viper-com-point (point)))
3016 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) t t)
3020 (setq viper-F-char viper-f-char) ; set new viper-F-char
3022 (viper-execute-com 'viper-goto-char-forward val com)))))
3024 (defun viper-find-char-backward (arg)
3025 "Find char ARG on line backward."
3027 (let ((val (viper-p-val arg))
3028 (com (viper-getcom arg))
3029 (cmd-representation (nth 5 viper-d-com)))
3031 ;; this means that the function was called interactively
3032 (setq viper-f-char (read-char)
3035 ;; viper-repeat --- set viper-F-char from command-keys
3036 (setq viper-F-char (if (stringp cmd-representation)
3037 (viper-seq-last-elt cmd-representation)
3039 viper-f-char viper-F-char)
3041 (if com (viper-move-marker-locally 'viper-com-point (point)))
3043 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) nil nil)
3047 (setq viper-F-char viper-f-char) ; set new viper-F-char
3048 (viper-execute-com 'viper-find-char-backward val com)))))
3050 (defun viper-goto-char-backward (arg)
3051 "Go up to char ARG backward on line."
3053 (let ((val (viper-p-val arg))
3054 (com (viper-getcom arg))
3055 (cmd-representation (nth 5 viper-d-com)))
3057 ;; this means that the function was called interactively
3058 (setq viper-f-char (read-char)
3061 ;; viper-repeat --- set viper-F-char from command-keys
3062 (setq viper-F-char (if (stringp cmd-representation)
3063 (viper-seq-last-elt cmd-representation)
3065 viper-f-char viper-F-char)
3067 (if com (viper-move-marker-locally 'viper-com-point (point)))
3069 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) nil t)
3073 (setq viper-F-char viper-f-char) ; set new viper-F-char
3074 (viper-execute-com 'viper-goto-char-backward val com)))))
3076 (defun viper-repeat-find (arg)
3077 "Repeat previous find command."
3079 (let ((val (viper-p-val arg))
3080 (com (viper-getcom arg)))
3081 (viper-deactivate-mark)
3082 (if com (viper-move-marker-locally 'viper-com-point (point)))
3083 (viper-find-char val viper-f-char viper-f-forward viper-f-offset)
3086 (if viper-f-forward (forward-char))
3087 (viper-execute-com 'viper-repeat-find val com)))))
3089 (defun viper-repeat-find-opposite (arg)
3090 "Repeat previous find command in the opposite direction."
3092 (let ((val (viper-p-val arg))
3093 (com (viper-getcom arg)))
3094 (viper-deactivate-mark)
3095 (if com (viper-move-marker-locally 'viper-com-point (point)))
3096 (viper-find-char val viper-f-char (not viper-f-forward) viper-f-offset)
3099 (if viper-f-forward (forward-char))
3100 (viper-execute-com 'viper-repeat-find-opposite val com)))))
3103 ;; window scrolling etc.
3105 (defun viper-window-top (arg)
3106 "Go to home window line."
3108 (let ((val (viper-p-val arg))
3109 (com (viper-getCom arg)))
3110 (if com (viper-move-marker-locally 'viper-com-point (point)))
3112 (move-to-window-line (1- val))
3114 ;; positioning is done twice: before and after command execution
3115 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3116 (back-to-indentation)
3118 (if com (viper-execute-com 'viper-window-top val com))
3120 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3121 (back-to-indentation)
3124 (defun viper-window-middle (arg)
3125 "Go to middle window line."
3127 (let ((val (viper-p-val arg))
3128 (com (viper-getCom arg))
3130 (if com (viper-move-marker-locally 'viper-com-point (point)))
3132 (if (not (pos-visible-in-window-p (point-max)))
3133 (move-to-window-line (+ (/ (1- (window-height)) 2) (1- val)))
3134 (setq lines (count-lines (window-start) (point-max)))
3135 (move-to-window-line (+ (/ lines 2) (1- val))))
3137 ;; positioning is done twice: before and after command execution
3138 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3139 (back-to-indentation)
3141 (if com (viper-execute-com 'viper-window-middle val com))
3143 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3144 (back-to-indentation)
3147 (defun viper-window-bottom (arg)
3148 "Go to last window line."
3150 (let ((val (viper-p-val arg))
3151 (com (viper-getCom arg)))
3152 (if com (viper-move-marker-locally 'viper-com-point (point)))
3154 (move-to-window-line (- val))
3156 ;; positioning is done twice: before and after command execution
3157 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3158 (back-to-indentation)
3160 (if com (viper-execute-com 'viper-window-bottom val com))
3162 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3163 (back-to-indentation)
3166 (defun viper-line-to-top (arg)
3167 "Put current line on the home line."
3169 (recenter (1- arg)))
3171 (defun viper-line-to-middle (arg)
3172 "Put current line on the middle line."
3174 (recenter (+ (1- arg) (/ (1- (window-height)) 2))))
3176 (defun viper-line-to-bottom (arg)
3177 "Put current line on the last line."
3179 (recenter (- (window-height) (1+ arg))))
3181 ;; If point is within viper-search-scroll-threshold of window top or bottom,
3182 ;; scroll up or down 1/7 of window height, depending on whether we are at the
3183 ;; bottom or at the top of the window. This function is called by viper-search
3184 ;; (which is called from viper-search-forward/backward/next). If the value of
3185 ;; viper-search-scroll-threshold is negative - don't scroll.
3186 (defun viper-adjust-window ()
3187 (let ((win-height (if viper-emacs-p
3188 (1- (window-height)) ; adjust for modeline
3189 (window-displayed-height)))
3191 at-top-p at-bottom-p
3192 min-scroll direction)
3194 (move-to-window-line 0) ; top
3196 (<= (count-lines pt (point))
3197 viper-search-scroll-threshold))
3198 (move-to-window-line -1) ; bottom
3200 (<= (count-lines pt (point)) viper-search-scroll-threshold))
3202 (cond (at-top-p (setq min-scroll (1- viper-search-scroll-threshold)
3204 (at-bottom-p (setq min-scroll (1+ viper-search-scroll-threshold)
3208 (* (max min-scroll (/ win-height 7)) direction)))
3213 ;; must correct this to only match ( to ) etc. On the other hand
3214 ;; it is good that paren match gets confused, because that way you
3215 ;; catch _all_ imbalances.
3217 (defun viper-paren-match (arg)
3218 "Go to the matching parenthesis."
3220 (viper-leave-region-active)
3221 (let ((com (viper-getcom arg))
3222 (parse-sexp-ignore-comments viper-parse-sexp-ignore-comments)
3225 (if (or (> arg 99) (< arg 1))
3226 (error "Prefix must be between 1 and 99")
3228 (if (> (point-max) 80000)
3229 (* (/ (point-max) 100) arg)
3230 (/ (* (point-max) arg) 100)))
3231 (back-to-indentation))
3232 (let (beg-lim end-lim)
3233 (if (and (eolp) (not (bolp))) (forward-char -1))
3234 (if (not (looking-at "[][(){}]"))
3235 (setq anchor-point (point)))
3238 (setq beg-lim (point))
3240 (setq end-lim (point)))
3241 (cond ((re-search-forward "[][(){}]" end-lim t)
3243 ((re-search-backward "[][(){}]" beg-lim t))
3245 (error "No matching character on line"))))
3246 (cond ((looking-at "[\(\[{]")
3247 (if com (viper-move-marker-locally 'viper-com-point (point)))
3250 (viper-execute-com 'viper-paren-match nil com)
3255 (viper-move-marker-locally 'viper-com-point anchor-point)
3257 (viper-execute-com 'viper-paren-match nil com)
3259 ((looking-at "[])}]")
3261 (if com (viper-move-marker-locally 'viper-com-point (point)))
3263 (if com (viper-execute-com 'viper-paren-match nil com)))
3266 (defun viper-toggle-parse-sexp-ignore-comments ()
3268 (setq viper-parse-sexp-ignore-comments
3269 (not viper-parse-sexp-ignore-comments))
3271 "From now on, `%%' will %signore parentheses inside comment fields"
3272 (if viper-parse-sexp-ignore-comments "" "NOT "))))
3275 ;; sentence, paragraph and heading
3277 (defun viper-forward-sentence (arg)
3280 (or (eq last-command this-command)
3282 (let ((val (viper-p-val arg))
3283 (com (viper-getcom arg)))
3284 (if com (viper-move-marker-locally 'viper-com-point (point)))
3285 (forward-sentence val)
3286 (if com (viper-execute-com 'viper-forward-sentence nil com))))
3288 (defun viper-backward-sentence (arg)
3289 "Backward sentence."
3291 (or (eq last-command this-command)
3293 (let ((val (viper-p-val arg))
3294 (com (viper-getcom arg)))
3295 (if com (viper-move-marker-locally 'viper-com-point (point)))
3296 (backward-sentence val)
3297 (if com (viper-execute-com 'viper-backward-sentence nil com))))
3299 (defun viper-forward-paragraph (arg)
3300 "Forward paragraph."
3302 (or (eq last-command this-command)
3304 (let ((val (viper-p-val arg))
3305 ;; if you want d} operate on whole lines, change viper-getcom to
3306 ;; viper-getCom below
3307 (com (viper-getcom arg)))
3308 (if com (viper-move-marker-locally 'viper-com-point (point)))
3309 (forward-paragraph val)
3313 (viper-execute-com 'viper-forward-paragraph nil com)))))
3315 (defun viper-backward-paragraph (arg)
3316 "Backward paragraph."
3318 (or (eq last-command this-command)
3320 (let ((val (viper-p-val arg))
3321 ;; if you want d{ operate on whole lines, change viper-getcom to
3322 ;; viper-getCom below
3323 (com (viper-getcom arg)))
3324 (if com (viper-move-marker-locally 'viper-com-point (point)))
3325 (backward-paragraph val)
3329 (viper-execute-com 'viper-backward-paragraph nil com)
3330 (backward-char 1)))))
3332 ;; should be mode-specific
3333 (defun viper-prev-heading (arg)
3335 (let ((val (viper-p-val arg))
3336 (com (viper-getCom arg)))
3337 (if com (viper-move-marker-locally 'viper-com-point (point)))
3338 (re-search-backward viper-heading-start nil t val)
3339 (goto-char (match-beginning 0))
3340 (if com (viper-execute-com 'viper-prev-heading nil com))))
3342 (defun viper-heading-end (arg)
3344 (let ((val (viper-p-val arg))
3345 (com (viper-getCom arg)))
3346 (if com (viper-move-marker-locally 'viper-com-point (point)))
3347 (re-search-forward viper-heading-end nil t val)
3348 (goto-char (match-beginning 0))
3349 (if com (viper-execute-com 'viper-heading-end nil com))))
3351 (defun viper-next-heading (arg)
3353 (let ((val (viper-p-val arg))
3354 (com (viper-getCom arg)))
3355 (if com (viper-move-marker-locally 'viper-com-point (point)))
3357 (re-search-forward viper-heading-start nil t val)
3358 (goto-char (match-beginning 0))
3359 (if com (viper-execute-com 'viper-next-heading nil com))))
3364 (defun viper-scroll-screen (arg)
3365 "Scroll to next screen."
3371 (setq arg (1- arg)))
3374 (setq arg (1+ arg))))
3378 (message "End of buffer")
3379 (goto-char (point-max)))
3380 (message "Beginning of buffer")
3381 (goto-char (point-min))))
3384 (defun viper-scroll-screen-back (arg)
3385 "Scroll to previous screen."
3387 (viper-scroll-screen (- arg)))
3389 (defun viper-scroll-down (arg)
3390 "Pull down half screen."
3394 (scroll-down (/ (window-height) 2))
3397 (message "Beginning of buffer")
3398 (goto-char (point-min)))))
3400 (defun viper-scroll-down-one (arg)
3401 "Scroll up one line."
3405 (defun viper-scroll-up (arg)
3406 "Pull up half screen."
3410 (scroll-up (/ (window-height) 2))
3413 (message "End of buffer")
3414 (goto-char (point-max)))))
3416 (defun viper-scroll-up-one (arg)
3417 "Scroll down one line."
3424 (defun viper-if-string (prompt)
3425 (if (memq viper-intermediate-command
3426 '(viper-command-argument viper-digit-argument viper-repeat))
3427 (setq viper-this-command-keys (this-command-keys)))
3428 (let ((s (viper-read-string-with-history
3431 'viper-search-history
3432 (car viper-search-history))))
3433 (if (not (string= s ""))
3434 (setq viper-s-string s))))
3437 (defun viper-toggle-search-style (arg)
3438 "Toggle the value of viper-case-fold-search/viper-re-search.
3439 Without prefix argument, will ask which search style to toggle. With prefix
3440 arg 1,toggles viper-case-fold-search; with arg 2 toggles viper-re-search.
3442 Although this function is bound to \\[viper-toggle-search-style], the most
3443 convenient way to use it is to bind `//' to the macro
3444 `1 M-x viper-toggle-search-style' and `///' to
3445 `2 M-x viper-toggle-search-style'. In this way, hitting `//' quickly will
3446 toggle case-fold-search and hitting `/' three times witth toggle regexp
3447 search. Macros are more convenient in this case because they don't affect
3448 the Emacs binding of `/'."
3451 (cond ((or (eq arg 1)
3453 (y-or-n-p (format "Search style: '%s'. Want '%s'? "
3454 (if viper-case-fold-search
3455 "case-insensitive" "case-sensitive")
3456 (if viper-case-fold-search
3458 "case-insensitive")))))
3459 (setq viper-case-fold-search (null viper-case-fold-search))
3460 (if viper-case-fold-search
3461 (setq msg "Search becomes case-insensitive")
3462 (setq msg "Search becomes case-sensitive")))
3465 (y-or-n-p (format "Search style: '%s'. Want '%s'? "
3467 "regexp-search" "vanilla-search")
3470 "regexp-search")))))
3471 (setq viper-re-search (null viper-re-search))
3473 (setq msg "Search becomes regexp-style")
3474 (setq msg "Search becomes vanilla-style")))
3476 (setq msg "Search style remains unchanged")))
3479 (defun viper-set-searchstyle-toggling-macros (unset)
3480 "Set the macros for toggling the search style in Viper's vi-state.
3481 The macro that toggles case sensitivity is bound to `//', and the one that
3482 toggles regexp search is bound to `///'.
3483 With a prefix argument, this function unsets the macros. "
3488 ;; toggle case sensitivity in search
3489 (viper-record-kbd-macro
3491 [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]
3493 ;; toggle regexp/vanila search
3494 (viper-record-kbd-macro
3496 [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]
3500 "// and /// now toggle case-sensitivity and regexp search")))
3501 (viper-unrecord-kbd-macro "//" 'vi-state)
3503 (viper-unrecord-kbd-macro "///" 'vi-state))))
3506 (defun viper-set-parsing-style-toggling-macro (unset)
3507 "Set `%%%' to be a macro that toggles whether comment fields should be parsed for matching parentheses.
3508 This is used in conjunction with the `%' command.
3510 With a prefix argument, unsets the macro."
3515 ;; Make %%% toggle parsing comments for matching parentheses
3516 (viper-record-kbd-macro
3518 [(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]
3522 "%%%%%% now toggles whether comments should be parsed for matching parentheses")))
3523 (viper-unrecord-kbd-macro "%%%" 'vi-state))))
3526 (defun viper-set-emacs-state-searchstyle-macros (unset &optional arg-majormode)
3527 "Set the macros for toggling the search style in Viper's emacs-state.
3528 The macro that toggles case sensitivity is bound to `//', and the one that
3529 toggles regexp search is bound to `///'.
3530 With a prefix argument, this function unsets the macros.
3531 If the optional prefix argument is non-nil and specifies a valid major mode,
3532 this sets the macros only in the macros in that major mode. Otherwise,
3533 the macros are set in the current major mode.
3534 \(When unsetting the macros, the second argument has no effect.\)"
3539 ;; toggle case sensitivity in search
3540 (viper-record-kbd-macro
3542 [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]
3543 (or arg-majormode major-mode))
3544 ;; toggle regexp/vanila search
3545 (viper-record-kbd-macro
3547 [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]
3548 (or arg-majormode major-mode))
3551 "// and /// now toggle case-sensitivity and regexp search.")))
3552 (viper-unrecord-kbd-macro "//" 'emacs-state)
3554 (viper-unrecord-kbd-macro "///" 'emacs-state))))
3557 (defun viper-search-forward (arg)
3558 "Search a string forward.
3559 ARG is used to find the ARG's occurrence of the string.
3560 Null string will repeat previous search."
3562 (let ((val (viper-P-val arg))
3563 (com (viper-getcom arg))
3564 (old-str viper-s-string))
3565 (setq viper-s-forward t)
3566 (viper-if-string "/")
3567 ;; this is not used at present, but may be used later
3568 (if (or (not (equal old-str viper-s-string))
3569 (not (markerp viper-local-search-start-marker))
3570 (not (marker-buffer viper-local-search-start-marker)))
3571 (setq viper-local-search-start-marker (point-marker)))
3572 (viper-search viper-s-string t val)
3575 (viper-move-marker-locally 'viper-com-point (mark t))
3576 (viper-execute-com 'viper-search-next val com)))))
3578 (defun viper-search-backward (arg)
3579 "Search a string backward.
3580 ARG is used to find the ARG's occurrence of the string.
3581 Null string will repeat previous search."
3583 (let ((val (viper-P-val arg))
3584 (com (viper-getcom arg))
3585 (old-str viper-s-string))
3586 (setq viper-s-forward nil)
3587 (viper-if-string "?")
3588 ;; this is not used at present, but may be used later
3589 (if (or (not (equal old-str viper-s-string))
3590 (not (markerp viper-local-search-start-marker))
3591 (not (marker-buffer viper-local-search-start-marker)))
3592 (setq viper-local-search-start-marker (point-marker)))
3593 (viper-search viper-s-string nil val)
3596 (viper-move-marker-locally 'viper-com-point (mark t))
3597 (viper-execute-com 'viper-search-next val com)))))
3600 ;; Search for COUNT's occurrence of STRING.
3601 ;; Search is forward if FORWARD is non-nil, otherwise backward.
3602 ;; INIT-POINT is the position where search is to start.
3604 ;; (STRING FORW COUNT &optional NO-OFFSET INIT-POINT LIMIT FAIL-IF-NOT-FOUND)
3605 (defun viper-search (string forward arg
3606 &optional no-offset init-point fail-if-not-found)
3607 (if (not (equal string ""))
3608 (let ((val (viper-p-val arg))
3609 (com (viper-getcom arg))
3610 (offset (not no-offset))
3611 (case-fold-search viper-case-fold-search)
3612 (start-point (or init-point (point))))
3613 (viper-deactivate-mark)
3617 (if offset (viper-forward-char-carefully))
3620 (re-search-forward string nil nil val)
3621 (re-search-backward string))
3622 (search-forward string nil nil val)
3623 (search-backward string))
3624 (if (not (equal start-point (point)))
3625 (push-mark start-point t)))
3627 (if (and (not fail-if-not-found) viper-search-wrap-around-t)
3629 (message "Search wrapped around BOTTOM of buffer")
3630 (goto-char (point-min))
3631 (viper-search string forward (cons 1 com) t start-point 'fail)
3632 ;; don't wait in macros
3633 (or executing-kbd-macro
3634 (memq viper-intermediate-command
3636 viper-digit-argument
3637 viper-command-argument))
3639 ;; delete the wrap-around message
3642 (goto-char start-point)
3643 (error "`%s': %s not found"
3645 (if viper-re-search "Pattern" "String"))
3651 (re-search-backward string nil nil val)
3652 (search-backward string nil nil val))
3653 (if (not (equal start-point (point)))
3654 (push-mark start-point t)))
3656 (if (and (not fail-if-not-found) viper-search-wrap-around-t)
3658 (message "Search wrapped around TOP of buffer")
3659 (goto-char (point-max))
3660 (viper-search string forward (cons 1 com) t start-point 'fail)
3661 ;; don't wait in macros
3662 (or executing-kbd-macro
3663 (memq viper-intermediate-command
3665 viper-digit-argument
3666 viper-command-argument))
3668 ;; delete the wrap-around message
3671 (goto-char start-point)
3672 (error "`%s': %s not found"
3674 (if viper-re-search "Pattern" "String"))
3676 ;; pull up or down if at top/bottom of window
3677 (viper-adjust-window)
3678 ;; highlight the result of search
3679 ;; don't wait and don't highlight in macros
3680 (or executing-kbd-macro
3681 (memq viper-intermediate-command
3682 '(viper-repeat viper-digit-argument viper-command-argument))
3683 (viper-flash-search-pattern))
3686 (defun viper-search-next (arg)
3687 "Repeat previous search."
3689 (let ((val (viper-p-val arg))
3690 (com (viper-getcom arg)))
3691 (if (null viper-s-string) (error viper-NoPrevSearch))
3692 (viper-search viper-s-string viper-s-forward arg)
3695 (viper-move-marker-locally 'viper-com-point (mark t))
3696 (viper-execute-com 'viper-search-next val com)))))
3698 (defun viper-search-Next (arg)
3699 "Repeat previous search in the reverse direction."
3701 (let ((val (viper-p-val arg))
3702 (com (viper-getcom arg)))
3703 (if (null viper-s-string) (error viper-NoPrevSearch))
3704 (viper-search viper-s-string (not viper-s-forward) arg)
3707 (viper-move-marker-locally 'viper-com-point (mark t))
3708 (viper-execute-com 'viper-search-Next val com)))))
3711 ;; Search contents of buffer defined by one of Viper's motion commands.
3712 ;; Repeatable via `n' and `N'.
3713 (defun viper-buffer-search-enable (&optional c)
3714 (cond (c (setq viper-buffer-search-char c))
3715 ((null viper-buffer-search-char)
3716 (setq viper-buffer-search-char ?g)))
3717 (define-key viper-vi-basic-map
3718 (char-to-string viper-buffer-search-char) 'viper-command-argument)
3719 (aset viper-exec-array viper-buffer-search-char 'viper-exec-buffer-search)
3720 (setq viper-prefix-commands
3721 (cons viper-buffer-search-char viper-prefix-commands)))
3723 ;; This is a Viper wraper for isearch-forward.
3724 (defun viper-isearch-forward (arg)
3725 "Do incremental search forward."
3727 ;; emacs bug workaround
3728 (if (listp arg) (setq arg (car arg)))
3729 (viper-exec-form-in-emacs (list 'isearch-forward arg)))
3731 ;; This is a Viper wraper for isearch-backward."
3732 (defun viper-isearch-backward (arg)
3733 "Do incremental search backward."
3735 ;; emacs bug workaround
3736 (if (listp arg) (setq arg (car arg)))
3737 (viper-exec-form-in-emacs (list 'isearch-backward arg)))
3740 ;; visiting and killing files, buffers
3742 (defun viper-switch-to-buffer ()
3743 "Switch to buffer in the current window."
3745 (let ((other-buffer (other-buffer (current-buffer)))
3748 (read-buffer "Switch to buffer in this window: " other-buffer))
3749 (switch-to-buffer buffer)))
3751 (defun viper-switch-to-buffer-other-window ()
3752 "Switch to buffer in another window."
3754 (let ((other-buffer (other-buffer (current-buffer)))
3757 (read-buffer "Switch to buffer in another window: " other-buffer))
3758 (switch-to-buffer-other-window buffer)))
3760 (defun viper-kill-buffer ()
3763 (let (buffer buffer-name)
3766 (format "Kill buffer \(%s\): "
3767 (buffer-name (current-buffer)))))
3769 (if (null buffer-name)
3771 (get-buffer buffer-name)))
3772 (if (null buffer) (error "`%s': No such buffer" buffer-name))
3773 (if (or (not (buffer-modified-p buffer))
3776 "Buffer `%s' is modified, are you sure you want to kill it? "
3778 (kill-buffer buffer)
3779 (error "Buffer not killed"))))
3785 (defsubst viper-yank (text)
3786 "Yank TEXT silently. This works correctly with Emacs's yank-pop command."
3788 (setq this-command 'yank))
3790 (defun viper-put-back (arg)
3791 "Put back after point/below line."
3793 (let ((val (viper-p-val arg))
3794 (text (if viper-use-register
3795 (cond ((viper-valid-register viper-use-register '(digit))
3797 (- viper-use-register ?1) 'do-not-rotate))
3798 ((viper-valid-register viper-use-register)
3799 (get-register (downcase viper-use-register)))
3800 (t (error viper-InvalidRegister viper-use-register)))
3804 (if viper-use-register
3805 (let ((reg viper-use-register))
3806 (setq viper-use-register nil)
3807 (error viper-EmptyRegister reg))
3809 (setq viper-use-register nil)
3810 (if (viper-end-with-a-newline-p text)
3816 (beginning-of-line))
3817 (if (not (eolp)) (viper-forward-char-carefully)))
3818 (set-marker (viper-mark-marker) (point) (current-buffer))
3819 (viper-set-destructive-command
3820 (list 'viper-put-back val nil viper-use-register nil nil))
3821 (setq sv-point (point))
3822 (viper-loop val (viper-yank text))
3823 (message "Inserted %d character(s), %d line(s)"
3824 (abs (- (point) sv-point))
3825 (abs (count-lines (point) sv-point))))
3826 ;; Vi puts cursor on the last char when the yanked text doesn't contain a
3827 ;; newline; it leaves the cursor at the beginning when the text contains
3829 (if (viper-same-line (point) (mark))
3830 (or (= (point) (mark)) (viper-backward-char-carefully))
3831 (exchange-point-and-mark)
3833 (back-to-indentation)))
3834 (viper-deactivate-mark))
3836 (defun viper-Put-back (arg)
3837 "Put back at point/above line."
3839 (let ((val (viper-p-val arg))
3840 (text (if viper-use-register
3841 (cond ((viper-valid-register viper-use-register '(digit))
3843 (- viper-use-register ?1) 'do-not-rotate))
3844 ((viper-valid-register viper-use-register)
3845 (get-register (downcase viper-use-register)))
3846 (t (error viper-InvalidRegister viper-use-register)))
3849 (if viper-use-register
3850 (let ((reg viper-use-register))
3851 (setq viper-use-register nil)
3852 (error viper-EmptyRegister reg))
3854 (setq viper-use-register nil)
3855 (if (viper-end-with-a-newline-p text) (beginning-of-line))
3856 (viper-set-destructive-command
3857 (list 'viper-Put-back val nil viper-use-register nil nil))
3858 (set-marker (viper-mark-marker) (point) (current-buffer))
3859 (viper-loop val (viper-yank text)))
3860 ;; Vi puts cursor on the last char when the yanked text doesn't contain a
3861 ;; newline; it leaves the cursor at the beginning when the text contains
3863 (if (viper-same-line (point) (mark))
3864 (or (= (point) (mark)) (viper-backward-char-carefully))
3865 (exchange-point-and-mark)
3867 (back-to-indentation)))
3868 (viper-deactivate-mark))
3871 ;; Copy region to kill-ring.
3872 ;; If BEG and END do not belong to the same buffer, copy empty region.
3873 (defun viper-copy-region-as-kill (beg end)
3875 (copy-region-as-kill beg end)
3876 (error (copy-region-as-kill beg beg))))
3879 (defun viper-delete-char (arg)
3880 "Delete next character."
3882 (let ((val (viper-p-val arg))
3884 (viper-set-destructive-command
3885 (list 'viper-delete-char val nil nil nil nil))
3886 (if (and viper-ex-style-editing
3887 (> val (viper-chars-in-region (point) (viper-line-pos 'end))))
3888 (setq val (viper-chars-in-region (point) (viper-line-pos 'end))))
3889 (if (and viper-ex-style-motion (eolp))
3890 (if (bolp) (error "") (setq val 0))) ; not bol---simply back 1 ch
3892 (viper-forward-char-carefully val)
3893 (setq end-del-pos (point)))
3894 (if viper-use-register
3896 (cond ((viper-valid-register viper-use-register '((Letter)))
3897 (viper-append-to-register
3898 (downcase viper-use-register) (point) end-del-pos))
3899 ((viper-valid-register viper-use-register)
3901 viper-use-register (point) end-del-pos nil))
3902 (t (error viper-InvalidRegister viper-use-register)))
3903 (setq viper-use-register nil)))
3906 (if viper-ex-style-motion
3907 (if (and (eolp) (not (bolp))) (backward-char 1)))
3910 (defun viper-delete-backward-char (arg)
3911 "Delete previous character. On reaching beginning of line, stop and beep."
3913 (let ((val (viper-p-val arg))
3915 (viper-set-destructive-command
3916 (list 'viper-delete-backward-char val nil nil nil nil))
3918 viper-ex-style-editing
3919 (> val (viper-chars-in-region (viper-line-pos 'start) (point))))
3920 (setq val (viper-chars-in-region (viper-line-pos 'start) (point))))
3922 (viper-backward-char-carefully val)
3923 (setq end-del-pos (point)))
3924 (if viper-use-register
3926 (cond ((viper-valid-register viper-use-register '(Letter))
3927 (viper-append-to-register
3928 (downcase viper-use-register) end-del-pos (point)))
3929 ((viper-valid-register viper-use-register)
3931 viper-use-register end-del-pos (point) nil))
3932 (t (error viper-InvalidRegister viper-use-register)))
3933 (setq viper-use-register nil)))
3934 (if (and (bolp) viper-ex-style-editing)
3936 (delete-backward-char val t)))
3938 (defun viper-del-backward-char-in-insert ()
3939 "Delete 1 char backwards while in insert mode."
3941 (if (and viper-ex-style-editing (bolp))
3943 (delete-backward-char 1 t)))
3945 (defun viper-del-backward-char-in-replace ()
3946 "Delete one character in replace mode.
3947 If `viper-delete-backwards-in-replace' is t, then DEL key actually deletes
3948 charecters. If it is nil, then the cursor just moves backwards, similarly
3949 to Vi. The variable `viper-ex-style-editing', if t, doesn't let the
3950 cursor move past the beginning of line."
3952 (cond (viper-delete-backwards-in-replace
3954 (delete-backward-char 1 t))
3955 (viper-ex-style-editing
3960 (delete-backward-char 1 t))))
3961 (viper-ex-style-editing
3966 (backward-char 1))))
3972 (defun viper-join-lines (arg)
3973 "Join this line to next, if ARG is nil. Otherwise, join ARG lines."
3975 (let ((val (viper-P-val arg)))
3976 (viper-set-destructive-command
3977 (list 'viper-join-lines val nil nil nil nil))
3978 (viper-loop (if (null val) 1 (1- val))
3983 (delete-region (point) (1- (point)))
3985 ;; fixup-whitespace sometimes does not leave space
3986 ;; between objects, so we insert it as in Vi
3987 (or (looking-at " ")
3995 (defun viper-change (beg end)
3996 (if (markerp beg) (setq beg (marker-position beg)))
3997 (if (markerp end) (setq end (marker-position end)))
3998 ;; beg is sometimes (mark t), which may be nil
3999 (or beg (setq beg end))
4001 (viper-set-complex-command-for-undo)
4002 (if viper-use-register
4004 (copy-to-register viper-use-register beg end nil)
4005 (setq viper-use-register nil)))
4006 (viper-set-replace-overlay beg end)
4007 (setq last-command nil) ; separate repl text from prev kills
4009 (if (= (viper-replace-start) (point-max))
4010 (error "End of buffer"))
4012 (setq viper-last-replace-region
4013 (buffer-substring (viper-replace-start)
4014 (viper-replace-end)))
4016 ;; protect against error while inserting "@" and other disasters
4017 ;; (e.g., read-only buff)
4018 (condition-case conds
4019 (if (or viper-allow-multiline-replace-regions
4020 (viper-same-line (viper-replace-start)
4021 (viper-replace-end)))
4023 ;; tabs cause problems in replace, so untabify
4024 (goto-char (viper-replace-end))
4025 (insert-before-markers "@") ; put placeholder after the TAB
4026 (untabify (viper-replace-start) (point))
4027 ;; del @, don't put on kill ring
4028 (delete-backward-char 1)
4030 (viper-set-replace-overlay-glyphs
4031 viper-replace-region-start-delimiter
4032 viper-replace-region-end-delimiter)
4033 ;; this move takes care of the last posn in the overlay, which
4034 ;; has to be shifted because of insert. We can't simply insert
4035 ;; "$" before-markers because then overlay-start will shift the
4036 ;; beginning of the overlay in case we are replacing a single
4037 ;; character. This fixes the bug with `s' and `cl' commands.
4038 (viper-move-replace-overlay (viper-replace-start) (point))
4039 (goto-char (viper-replace-start))
4040 (viper-change-state-to-replace t))
4041 (kill-region (viper-replace-start)
4042 (viper-replace-end))
4043 (viper-hide-replace-overlay)
4044 (viper-change-state-to-insert))
4045 (error ;; make sure that the overlay doesn't stay.
4046 ;; go back to the original point
4047 (goto-char (viper-replace-start))
4048 (viper-hide-replace-overlay)
4049 (viper-message-conditions conds))))
4052 (defun viper-change-subr (beg end)
4053 ;; beg is sometimes (mark t), which may be nil
4054 (or beg (setq beg end))
4055 (if viper-use-register
4057 (copy-to-register viper-use-register beg end nil)
4058 (setq viper-use-register nil)))
4059 (kill-region beg end)
4060 (setq this-command 'viper-change)
4061 (viper-yank-last-insertion))
4063 (defun viper-toggle-case (arg)
4064 "Toggle character case."
4066 (let ((val (viper-p-val arg)) (c))
4067 (viper-set-destructive-command
4068 (list 'viper-toggle-case val nil nil nil nil))
4070 (setq c (following-char))
4072 (if (eq c (upcase c))
4073 (insert-char (downcase c) 1)
4074 (insert-char (upcase c) 1))
4075 (if (eolp) (backward-char 1))
4076 (setq val (1- val)))))
4081 (defun viper-query-replace ()
4083 If a null string is suplied as the string to be replaced,
4084 the query replace mode will toggle between string replace
4085 and regexp replace."
4088 (setq str (viper-read-string-with-history
4089 (if viper-re-query-replace "Query replace regexp: "
4092 'viper-replace1-history
4093 (car viper-replace1-history) ; default
4095 (if (string= str "")
4097 (setq viper-re-query-replace (not viper-re-query-replace))
4098 (message "Query replace mode changed to %s"
4099 (if viper-re-query-replace "regexp replace"
4101 (if viper-re-query-replace
4102 (query-replace-regexp
4104 (viper-read-string-with-history
4105 (format "Query replace regexp `%s' with: " str)
4107 'viper-replace1-history
4108 (car viper-replace1-history) ; default
4112 (viper-read-string-with-history
4113 (format "Query replace `%s' with: " str)
4115 'viper-replace1-history
4116 (car viper-replace1-history) ; default
4122 (defun viper-mark-beginning-of-buffer ()
4123 "Mark beginning of buffer."
4126 (goto-char (point-min))
4127 (exchange-point-and-mark)
4128 (message "Mark set at the beginning of buffer"))
4130 (defun viper-mark-end-of-buffer ()
4131 "Mark end of buffer."
4134 (goto-char (point-max))
4135 (exchange-point-and-mark)
4136 (message "Mark set at the end of buffer"))
4138 (defun viper-mark-point ()
4139 "Set mark at point of buffer."
4141 (let ((char (read-char)))
4142 (cond ((and (<= ?a char) (<= char ?z))
4143 (point-to-register (1+ (- char ?a))))
4144 ((= char ?<) (viper-mark-beginning-of-buffer))
4145 ((= char ?>) (viper-mark-end-of-buffer))
4146 ((= char ?.) (viper-set-mark-if-necessary))
4147 ((= char ?,) (viper-cycle-through-mark-ring))
4148 ((= char ?D) (mark-defun))
4152 ;; Algorithm: If first invocation of this command save mark on ring, goto
4153 ;; mark, M0, and pop the most recent elt from the mark ring into mark,
4154 ;; making it into the new mark, M1.
4155 ;; Push this mark back and set mark to the original point position, p1.
4156 ;; So, if you hit '' or `` then you can return to p1.
4158 ;; If repeated command, pop top elt from the ring into mark and
4159 ;; jump there. This forgets the position, p1, and puts M1 back into mark.
4160 ;; Then we save the current pos, which is M0, jump to M1 and pop M2 from
4161 ;; the ring into mark. Push M2 back on the ring and set mark to M0.
4163 (defun viper-cycle-through-mark-ring ()
4164 "Visit previous locations on the mark ring.
4165 One can use `` and '' to temporarily jump 1 step back."
4166 (let* ((sv-pt (point)))
4167 ;; if repeated `m,' command, pop the previously saved mark.
4168 ;; Prev saved mark is actually prev saved point. It is used if the
4169 ;; user types `` or '' and is discarded
4170 ;; from the mark ring by the next `m,' command.
4171 ;; In any case, go to the previous or previously saved mark.
4172 ;; Then push the current mark (popped off the ring) and set current
4173 ;; point to be the mark. Current pt as mark is discarded by the next
4175 (if (eq last-command 'viper-cycle-through-mark-ring)
4177 ;; save current mark if the first iteration
4178 (setq mark-ring (delete (viper-mark-marker) mark-ring))
4180 (push-mark (mark t) t)) )
4182 (set-mark-command 1)
4183 ;; don't duplicate mark on the ring
4184 (setq mark-ring (delete (viper-mark-marker) mark-ring))
4186 (viper-deactivate-mark)
4187 (setq this-command 'viper-cycle-through-mark-ring)
4191 (defun viper-goto-mark (arg)
4194 (let ((char (read-char))
4195 (com (viper-getcom arg)))
4196 (viper-goto-mark-subr char com nil)))
4198 (defun viper-goto-mark-and-skip-white (arg)
4199 "Go to mark and skip to first non-white character on line."
4201 (let ((char (read-char))
4202 (com (viper-getCom arg)))
4203 (viper-goto-mark-subr char com t)))
4205 (defun viper-goto-mark-subr (char com skip-white)
4208 (error "Empty buffer")
4210 (cond ((viper-valid-register char '(letter))
4211 (let* ((buff (current-buffer))
4212 (reg (1+ (- char ?a)))
4213 (text-marker (get-register reg)))
4214 (if com (viper-move-marker-locally 'viper-com-point (point)))
4215 (if (not (viper-valid-marker text-marker))
4216 (error viper-EmptyTextmarker char))
4217 (if (and (viper-same-line (point) viper-last-jump)
4218 (= (point) viper-last-jump-ignore))
4219 (push-mark viper-last-jump t)
4220 (push-mark nil t)) ; no msg
4221 (viper-register-to-point reg)
4222 (setq viper-last-jump (point-marker))
4224 (back-to-indentation)
4225 (setq viper-last-jump-ignore (point))))
4227 (if (equal buff (current-buffer))
4228 (viper-execute-com (if skip-white
4229 'viper-goto-mark-and-skip-white
4232 (switch-to-buffer buff)
4233 (goto-char viper-com-point)
4234 (viper-change-state-to-vi)
4236 ((and (not skip-white) (= char ?`))
4237 (if com (viper-move-marker-locally 'viper-com-point (point)))
4238 (if (and (viper-same-line (point) viper-last-jump)
4239 (= (point) viper-last-jump-ignore))
4240 (goto-char viper-last-jump))
4241 (if (null (mark t)) (error "Mark is not set in this buffer"))
4242 (if (= (point) (mark t)) (pop-mark))
4243 (exchange-point-and-mark)
4244 (setq viper-last-jump (point-marker)
4245 viper-last-jump-ignore 0)
4246 (if com (viper-execute-com 'viper-goto-mark nil com)))
4247 ((and skip-white (= char ?'))
4248 (if com (viper-move-marker-locally 'viper-com-point (point)))
4249 (if (and (viper-same-line (point) viper-last-jump)
4250 (= (point) viper-last-jump-ignore))
4251 (goto-char viper-last-jump))
4252 (if (= (point) (mark t)) (pop-mark))
4253 (exchange-point-and-mark)
4254 (setq viper-last-jump (point))
4255 (back-to-indentation)
4256 (setq viper-last-jump-ignore (point))
4257 (if com (viper-execute-com 'viper-goto-mark-and-skip-white nil com)))
4258 (t (error viper-InvalidTextmarker char))))
4260 (defun viper-insert-tab ()
4264 (defun viper-exchange-point-and-mark ()
4266 (exchange-point-and-mark)
4267 (back-to-indentation))
4269 ;; Input Mode Indentation
4271 ;; Returns t, if the string before point matches the regexp STR.
4272 (defsubst viper-looking-back (str)
4273 (and (save-excursion (re-search-backward str nil t))
4274 (= (point) (match-end 0))))
4277 (defun viper-forward-indent ()
4278 "Indent forward -- `C-t' in Vi."
4281 (indent-to (+ (current-column) viper-shift-width)))
4283 (defun viper-backward-indent ()
4284 "Backtab, C-d in VI"
4287 (let ((p (point)) (c (current-column)) bol (indent t))
4288 (if (viper-looking-back "[0^]")
4290 (if (eq ?^ (preceding-char))
4291 (setq viper-preserve-indent t))
4292 (delete-backward-char 1)
4298 (if (re-search-backward "[^ \t]" bol 1) (forward-char))
4299 (delete-region (point) p)
4301 (indent-to (- c viper-shift-width)))
4302 (if (or (bolp) (viper-looking-back "[^ \t]"))
4303 (setq viper-cted nil)))))
4305 (defun viper-autoindent ()
4306 "Auto Indentation, Vi-style."
4308 (let ((col (current-indentation)))
4309 (if abbrev-mode (expand-abbrev))
4310 (if viper-preserve-indent
4311 (setq viper-preserve-indent nil)
4312 (setq viper-current-indent col))
4313 ;; don't leave whitespace lines around
4314 (if (memq last-command
4316 viper-open-line viper-Open-line
4317 viper-replace-state-exit-cmd))
4318 (indent-to-left-margin))
4319 ;; use \n instead of newline, or else <Return> will move the insert point
4322 (if viper-auto-indent
4325 (if (and viper-electric-mode
4327 (memq major-mode '(fundamental-mode
4329 paragraph-indent-text-mode ))))
4330 (indent-according-to-mode)
4331 (indent-to viper-current-indent))
4336 ;; Viewing registers
4338 (defun viper-ket-function (arg)
4339 "Function called by \], the ket. View registers and call \]\]."
4341 (let ((reg (read-char)))
4342 (cond ((viper-valid-register reg '(letter Letter))
4343 (view-register (downcase reg)))
4344 ((viper-valid-register reg '(digit))
4345 (let ((text (current-kill (- reg ?1) 'do-not-rotate)))
4346 (with-output-to-temp-buffer " *viper-info*"
4347 (princ (format "Register %c contains the string:\n" reg))
4351 (viper-next-heading arg))
4353 viper-InvalidRegister reg)))))
4355 (defun viper-brac-function (arg)
4356 "Function called by \[, the brac. View textmarkers and call \[\["
4358 (let ((reg (read-char)))
4360 (viper-prev-heading arg))
4362 (viper-heading-end arg))
4363 ((viper-valid-register reg '(letter))
4364 (let* ((val (get-register (1+ (- reg ?a))))
4365 (buf (if (not (markerp val))
4366 (error viper-EmptyTextmarker reg)
4367 (marker-buffer val)))
4368 (pos (marker-position val))
4369 line-no text (s pos) (e pos))
4370 (with-output-to-temp-buffer " *viper-info*"
4375 (setq line-no (1+ (count-lines (point-min) val)))
4378 (if (re-search-backward "[^ \t]" nil t)
4384 (if (re-search-forward "[^ \t]" nil t)
4388 (setq text (buffer-substring s e))
4389 (setq text (format "%s<%c>%s"
4390 (substring text 0 (- pos s))
4391 reg (substring text (- pos s)))))
4394 "Textmarker `%c' is in buffer `%s' at line %d.\n"
4395 reg (buffer-name buf) line-no))
4396 (princ (format "Here is some text around %c:\n\n %s"
4398 (princ (format viper-EmptyTextmarker reg))))
4400 (t (error viper-InvalidTextmarker reg)))))
4404 ;; commands in insertion mode
4406 (defun viper-delete-backward-word (arg)
4407 "Delete previous word."
4412 (delete-region (point) (mark t))
4416 (defun viper-set-expert-level (&optional dont-change-unless)
4417 "Sets the expert level for a Viper user.
4418 Can be called interactively to change (temporarily or permanently) the
4419 current expert level.
4421 The optional argument DONT-CHANGE-UNLESS, if not nil, says that
4422 the level should not be changed, unless its current value is
4423 meaningless (i.e., not one of 1,2,3,4,5).
4425 User level determines the setting of Viper variables that are most
4426 sensitive for VI-style look-and-feel."
4430 (if (not (natnump viper-expert-level)) (setq viper-expert-level 0))
4432 (save-window-excursion
4433 (delete-other-windows)
4434 ;; if 0 < viper-expert-level < viper-max-expert-level
4435 ;; & dont-change-unless = t -- use it; else ask
4436 (viper-ask-level dont-change-unless))
4438 (setq viper-always t
4439 viper-ex-style-motion t
4440 viper-ex-style-editing t
4441 viper-want-ctl-h-help nil)
4443 (cond ((eq viper-expert-level 1) ; novice or beginner
4444 (global-set-key ; in emacs-state
4446 (if (viper-window-display-p) 'viper-iconify 'suspend-emacs))
4447 (setq viper-no-multiple-ESC t
4449 viper-vi-style-in-minibuffer t
4450 viper-search-wrap-around-t t
4451 viper-electric-mode nil
4452 viper-want-emacs-keys-in-vi nil
4453 viper-want-emacs-keys-in-insert nil))
4455 ((and (> viper-expert-level 1) (< viper-expert-level 5))
4456 ;; intermediate to guru
4457 (setq viper-no-multiple-ESC (if (viper-window-display-p)
4459 viper-electric-mode t
4460 viper-want-emacs-keys-in-vi t
4461 viper-want-emacs-keys-in-insert (> viper-expert-level 2))
4463 (if (eq viper-expert-level 4) ; respect user's ex-style motion
4464 ; and viper-no-multiple-ESC
4467 viper-ex-style-editing
4468 (viper-standard-value 'viper-ex-style-editing)
4469 viper-ex-style-motion
4470 (viper-standard-value 'viper-ex-style-motion))
4471 (setq viper-ex-style-motion
4472 (viper-standard-value 'viper-ex-style-motion)
4473 viper-ex-style-editing
4474 (viper-standard-value 'viper-ex-style-editing)
4476 (viper-standard-value 'viper-re-search)
4477 viper-no-multiple-ESC
4478 (viper-standard-value 'viper-no-multiple-ESC)))))
4481 ;; Ideally, if 5 is selected, a buffer should pop up to let the
4482 ;; user toggle the values of variables.
4483 (t (setq-default viper-ex-style-editing
4484 (viper-standard-value 'viper-ex-style-editing)
4485 viper-ex-style-motion
4486 (viper-standard-value 'viper-ex-style-motion))
4487 (setq viper-want-ctl-h-help
4488 (viper-standard-value 'viper-want-ctl-h-help)
4490 (viper-standard-value 'viper-always)
4491 viper-no-multiple-ESC
4492 (viper-standard-value 'viper-no-multiple-ESC)
4493 viper-ex-style-motion
4494 (viper-standard-value 'viper-ex-style-motion)
4495 viper-ex-style-editing
4496 (viper-standard-value 'viper-ex-style-editing)
4498 (viper-standard-value 'viper-re-search)
4500 (viper-standard-value 'viper-electric-mode)
4501 viper-want-emacs-keys-in-vi
4502 (viper-standard-value 'viper-want-emacs-keys-in-vi)
4503 viper-want-emacs-keys-in-insert
4504 (viper-standard-value 'viper-want-emacs-keys-in-insert))))
4506 (viper-set-mode-vars-for viper-current-state)
4507 (if (or viper-always
4508 (and (> viper-expert-level 0) (> 5 viper-expert-level)))
4511 ;; Ask user expert level.
4512 (defun viper-ask-level (dont-change-unless)
4513 (let ((ask-buffer " *viper-ask-level*")
4514 level-changed repeated)
4515 (save-window-excursion
4516 (switch-to-buffer ask-buffer)
4518 (while (or (> viper-expert-level viper-max-expert-level)
4519 (< viper-expert-level 1)
4520 (null dont-change-unless))
4524 (message "Invalid user level")
4527 (setq dont-change-unless t
4530 Please specify your level of familiarity with the venomous VI PERil
4531 (and the VI Plan for Emacs Rescue).
4532 You can change it at any time by typing `M-x viper-set-expert-level RET'
4534 1 -- BEGINNER: Almost all Emacs features are suppressed.
4535 Feels almost like straight Vi. File name completion and
4536 command history in the minibuffer are thrown in as a bonus.
4537 To use Emacs productively, you must reach level 3 or higher.
4538 2 -- MASTER: C-c now has its standard Emacs meaning in Vi command state,
4539 so most Emacs commands can be used when Viper is in Vi state.
4540 Good progress---you are well on the way to level 3!
4541 3 -- GRAND MASTER: Like 3, but most Emacs commands are available also
4542 in Viper's insert state.
4543 4 -- GURU: Like 3, but user settings are respected for viper-no-multiple-ESC,
4544 viper-ex-style-motion, viper-ex-style-editing, and
4545 viper-re-search variables. Adjust these settings to your taste.
4546 5 -- WIZARD: Like 4, but user settings are also respected for viper-always,
4547 viper-electric-mode, viper-want-ctl-h-help, viper-want-emacs-keys-in-vi,
4548 and viper-want-emacs-keys-in-insert. Adjust these to your taste.
4550 Please, specify your level now: ")
4552 (setq viper-expert-level (- (viper-read-char-exclusive) ?0))
4555 ;; tell the user if level was changed
4559 (format "\n\n\n\n\n\t\tYou have selected user level %d"
4560 viper-expert-level))
4561 (if (y-or-n-p "Do you wish to make this change permanent? ")
4562 ;; save the setting for viper-expert-level
4565 (format "Saving user level %d ..." viper-expert-level)
4566 viper-custom-file-name))
4568 (bury-buffer) ; remove ask-buffer from screen
4578 ;; if ENFORCE-BUFFER is not nil, error if CHAR is a marker in another buffer
4579 (defun viper-register-to-point (char &optional enforce-buffer)
4580 "Like jump-to-register, but switches to another buffer in another window."
4581 (interactive "cViper register to point: ")
4582 (let ((val (get-register char)))
4584 ((and (fboundp 'frame-configuration-p)
4585 (frame-configuration-p val))
4586 (set-frame-configuration val))
4587 ((window-configuration-p val)
4588 (set-window-configuration val))
4589 ((viper-valid-marker val)
4590 (if (and enforce-buffer
4591 (not (equal (current-buffer) (marker-buffer val))))
4592 (error (concat viper-EmptyTextmarker " in this buffer")
4594 (pop-to-buffer (marker-buffer val))
4596 ((and (consp val) (eq (car val) 'file))
4597 (find-file (cdr val)))
4599 (error viper-EmptyTextmarker (1- (+ char ?a)))))))
4602 (defun viper-save-kill-buffer ()
4603 "Save then kill current buffer. "
4605 (if (< viper-expert-level 2)
4606 (save-buffers-kill-emacs)
4608 (kill-buffer (current-buffer))))
4614 (defun viper-submit-report ()
4615 "Submit bug report on Viper."
4617 (let ((reporter-prompt-for-summary-p t)
4618 (viper-device-type (viper-device-type))
4619 color-display-p frame-parameters
4620 minibuffer-emacs-face minibuffer-vi-face minibuffer-insert-face
4621 varlist salutation window-config)
4623 ;; If mode info is needed, add variable to `let' and then set it below,
4624 ;; like we did with color-display-p.
4625 (setq color-display-p (if (viper-window-display-p)
4626 (viper-color-display-p)
4628 minibuffer-vi-face (if (viper-has-face-support-p)
4629 (viper-get-face viper-minibuffer-vi-face)
4631 minibuffer-insert-face (if (viper-has-face-support-p)
4633 viper-minibuffer-insert-face)
4635 minibuffer-emacs-face (if (viper-has-face-support-p)
4637 viper-minibuffer-emacs-face)
4639 frame-parameters (if (fboundp 'frame-parameters)
4640 (frame-parameters (selected-frame))))
4642 (setq varlist (list 'viper-vi-minibuffer-minor-mode
4643 'viper-insert-minibuffer-minor-mode
4644 'viper-vi-intercept-minor-mode
4645 'viper-vi-local-user-minor-mode
4646 'viper-vi-kbd-minor-mode
4647 'viper-vi-global-user-minor-mode
4648 'viper-vi-state-modifier-minor-mode
4649 'viper-vi-diehard-minor-mode
4650 'viper-vi-basic-minor-mode
4651 'viper-replace-minor-mode
4652 'viper-insert-intercept-minor-mode
4653 'viper-insert-local-user-minor-mode
4654 'viper-insert-kbd-minor-mode
4655 'viper-insert-global-user-minor-mode
4656 'viper-insert-state-modifier-minor-mode
4657 'viper-insert-diehard-minor-mode
4658 'viper-insert-basic-minor-mode
4659 'viper-emacs-intercept-minor-mode
4660 'viper-emacs-local-user-minor-mode
4661 'viper-emacs-kbd-minor-mode
4662 'viper-emacs-global-user-minor-mode
4663 'viper-emacs-state-modifier-minor-mode
4664 'viper-automatic-iso-accents
4665 'viper-special-input-method
4666 'viper-want-emacs-keys-in-insert
4667 'viper-want-emacs-keys-in-vi
4668 'viper-keep-point-on-undo
4669 'viper-no-multiple-ESC
4670 'viper-electric-mode
4672 'viper-want-ctl-h-help
4673 'viper-ex-style-editing
4674 'viper-delete-backwards-in-replace
4675 'viper-vi-style-in-minibuffer
4676 'viper-vi-state-hook
4677 'viper-insert-state-hook
4678 'viper-replace-state-hook
4679 'viper-emacs-state-hook
4680 'ex-cycle-other-window
4681 'ex-cycle-through-non-files
4688 'minibuffer-insert-face
4689 'minibuffer-emacs-face
4692 Congratulations! You may have unearthed a bug in Viper!
4693 Please mail a concise, accurate summary of the problem to the address above.
4695 -------------------------------------------------------------------")
4696 (setq window-config (current-window-configuration))
4697 (with-output-to-temp-buffer " *viper-info*"
4698 (switch-to-buffer " *viper-info*")
4699 (delete-other-windows)
4701 PLEASE FOLLOW THESE PROCEDURES
4702 ------------------------------
4704 Before reporting a bug, please verify that it is related to Viper, and is
4705 not cause by other packages you are using.
4707 Don't report compilation warnings, unless you are certain that there is a
4708 problem. These warnings are normal and unavoidable.
4710 Please note that users should not modify variables and keymaps other than
4711 those advertised in the manual. Such `customization' is likely to crash
4712 Viper, as it would any other improperly customized Emacs package.
4714 If you are reporting an error message received while executing one of the
4715 Viper commands, type:
4717 M-x set-variable <Return> debug-on-error <Return> t <Return>
4719 Then reproduce the error. The above command will cause Emacs to produce a
4720 back trace of the execution that leads to the error. Please include this
4721 trace in your bug report.
4723 If you believe that one of Viper's commands goes into an infinite loop
4724 \(e.g., Emacs freezes\), type:
4726 M-x set-variable <Return> debug-on-quit <Return> t <Return>
4728 Then reproduce the problem. Wait for a few seconds, then type C-g to abort
4729 the current command. Include the resulting back trace in the bug report.
4731 Mail anyway (y or n)? ")
4732 (if (y-or-n-p "Mail anyway? ")
4734 (set-window-configuration window-config)
4735 (error "Bug report aborted")))
4738 (set-window-configuration window-config)
4740 (reporter-submit-bug-report "kifer@cs.sunysb.edu"
4743 nil 'delete-other-windows
4750 ;; Smoothes out the difference between Emacs' unread-command-events
4751 ;; and XEmacs unread-command-event. Arg is a character, an event, a list of
4752 ;; events or a sequence of keys.
4754 ;; Due to the way unread-command-events in Emacs (not XEmacs), a non-event
4755 ;; symbol in unread-command-events list may cause Emacs to turn this symbol
4756 ;; into an event. Below, we delete nil from event lists, since nil is the most
4757 ;; common symbol that might appear in this wrong context.
4758 (defun viper-set-unread-command-events (arg)
4761 unread-command-events
4763 (cond ((eventp arg) (list arg))
4766 (listify-key-sequence arg))
4768 "viper-set-unread-command-events: Invalid argument, %S"
4770 (if (not (eventp nil))
4771 (setq new-events (delq nil new-events)))
4772 (append new-events unread-command-events)))
4775 unread-command-events
4777 (cond ((viper-characterp arg) (list (character-to-event arg)))
4778 ((eventp arg) (list arg))
4779 ((stringp arg) (mapcar 'character-to-event arg))
4780 ((vectorp arg) (append arg nil)) ; turn into list
4781 ((listp arg) (viper-eventify-list-xemacs arg))
4783 "viper-set-unread-command-events: Invalid argument, %S" arg)))
4784 unread-command-events))))
4786 ;; list is assumed to be a list of events of characters
4787 (defun viper-eventify-list-xemacs (lis)
4789 (function (lambda (elt)
4790 (cond ((viper-characterp elt) (character-to-event elt))
4793 "viper-eventify-list-xemacs: can't convert to event, %S"
4799 ;;; viper-cmd.el ends here