1 ;;; viper-cmd.el --- Vi command support for Viper
3 ;; Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
4 ;; 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
6 ;; Author: Michael Kifer <kifer@cs.stonybrook.edu>
8 ;; This file is part of GNU Emacs.
10 ;; GNU Emacs is free software; you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation; either version 3, or (at your option)
15 ;; GNU Emacs is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs; see the file COPYING. If not, write to the
22 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
23 ;; Boston, MA 02110-1301, USA.
32 (defvar viper-minibuffer-current-face
)
33 (defvar viper-minibuffer-insert-face
)
34 (defvar viper-minibuffer-vi-face
)
35 (defvar viper-minibuffer-emacs-face
)
37 (defvar viper-mode-string
)
38 (defvar viper-custom-file-name
)
39 (defvar viper--key-maps
)
40 (defvar viper--intercept-key-maps
)
41 (defvar iso-accents-mode
)
43 (defvar quail-current-str
)
44 (defvar mark-even-if-inactive
)
47 (defvar undo-beg-posn
)
48 (defvar undo-end-posn
)
51 (unless (fboundp 'declare-function
) (defmacro declare-function
(&rest r
))))
65 ;; These test functions are shamelessly lifted from vip 4.4.2 by Aamod Sane
67 ;; generate test functions
68 ;; given symbol foo, foo-p is the test function, foos is the set of
70 ;; (macroexpand '(viper-test-com-defun foo))
71 ;; (defun foo-p (com) (consp (memq com foos)))
73 (defmacro viper-test-com-defun
(name)
74 (let* ((snm (symbol-name name
))
75 (nm-p (intern (concat snm
"-p")))
76 (nms (intern (concat snm
"s"))))
78 (consp (viper-memq-char com
,nms
)
81 ;; Variables for defining VI commands
83 ;; Modifying commands that can be prefixes to movement commands
84 (defvar viper-prefix-commands
'(?c ?d ?y ?
! ?
= ?
# ?
< ?
> ?
\"))
85 ;; define viper-prefix-command-p
86 (viper-test-com-defun viper-prefix-command)
88 ;; Commands that are pairs eg. dd. r and R here are a hack
89 (defconst viper-charpair-commands
'(?c ?d ?y ?
! ?
= ?
< ?
> ?r ?R
))
90 ;; define viper-charpair-command-p
91 (viper-test-com-defun viper-charpair-command)
93 (defconst viper-movement-commands
'(?b ?B ?e ?E ?f ?F ?G ?h ?j ?k ?l
94 ?H ?M ?L ?n ?t ?T ?w ?W ?$ ?%
95 ?^ ?
( ?
) ?- ?
+ ?| ?
{ ?
} ?
[ ?
] ?
' ?
`
96 ?\
; ?, ?0 ?? ?/ ?\ ?\C-m
101 ;; define viper-movement-command-p
102 (viper-test-com-defun viper-movement-command)
105 (defconst viper-digit-commands
'(?
1 ?
2 ?
3 ?
4 ?
5 ?
6 ?
7 ?
8 ?
9))
107 ;; define viper-digit-command-p
108 (viper-test-com-defun viper-digit-command)
110 ;; Commands that can be repeated by . (dotted)
111 (defconst viper-dotable-commands
'(?c ?d ?C ?s ?S ?D ?
> ?
<))
112 ;; define viper-dotable-command-p
113 (viper-test-com-defun viper-dotable-command)
115 ;; Commands that can follow a #
116 (defconst viper-hash-commands
'(?c ?C ?g ?q ?s
))
117 ;; define viper-hash-command-p
118 (viper-test-com-defun viper-hash-command)
120 ;; Commands that may have registers as prefix
121 (defconst viper-regsuffix-commands
'(?d ?y ?Y ?D ?p ?P ?x ?X
))
122 ;; define viper-regsuffix-command-p
123 (viper-test-com-defun viper-regsuffix-command)
125 (defconst viper-vi-commands
(append viper-movement-commands
127 viper-dotable-commands
128 viper-charpair-commands
130 viper-prefix-commands
131 viper-regsuffix-commands
)
132 "The list of all commands in Vi-state.")
133 ;; define viper-vi-command-p
134 (viper-test-com-defun viper-vi-command)
136 ;; Where viper saves mark. This mark is resurrected by m^
137 (defvar viper-saved-mark nil
)
139 ;; Contains user settings for vars affected by viper-set-expert-level function.
140 ;; Not a user option.
141 (defvar viper-saved-user-settings nil
)
149 ;; Runs viper-after-change-functions inside after-change-functions
150 (defun viper-after-change-sentinel (beg end len
)
151 (run-hook-with-args 'viper-after-change-functions beg end len
))
153 ;; Runs viper-before-change-functions inside before-change-functions
154 (defun viper-before-change-sentinel (beg end
)
155 (run-hook-with-args 'viper-before-change-functions beg end
))
157 (defsubst viper-post-command-sentinel
()
158 (condition-case conds
159 (run-hooks 'viper-post-command-hooks
)
160 (error (viper-message-conditions conds
)))
161 (if (eq viper-current-state
'vi-state
)
162 (viper-restore-cursor-color 'after-insert-mode
)))
164 (defsubst viper-pre-command-sentinel
()
165 (run-hooks 'viper-pre-command-hooks
))
167 ;; Needed so that Viper will be able to figure the last inserted
168 ;; chunk of text with reasonable accuracy.
169 (defsubst viper-insert-state-post-command-sentinel
()
170 (if (and (memq viper-current-state
'(insert-state replace-state
))
172 (>= (point) viper-insert-point
))
173 (setq viper-last-posn-while-in-insert-state
(point-marker)))
174 (or (viper-overlay-p viper-replace-overlay
)
176 (viper-set-replace-overlay (point-min) (point-min))
177 (viper-hide-replace-overlay)))
178 (if (eq viper-current-state
'insert-state
)
179 (let ((icolor (viper-frame-value viper-insert-state-cursor-color
)))
180 (or (stringp (viper-get-saved-cursor-color-in-insert-mode))
181 (string= (viper-get-cursor-color) icolor
)
182 ;; save current color, if not already saved
183 (viper-save-cursor-color 'before-insert-mode
))
184 ;; set insert mode cursor color
185 (viper-change-cursor-color icolor
)))
186 (let ((ecolor (viper-frame-value viper-emacs-state-cursor-color
)))
187 (when (and ecolor
(eq viper-current-state
'emacs-state
))
188 (or (stringp (viper-get-saved-cursor-color-in-emacs-mode))
189 (string= (viper-get-cursor-color) ecolor
)
190 ;; save current color, if not already saved
191 (viper-save-cursor-color 'before-emacs-mode
))
192 ;; set emacs mode cursor color
193 (viper-change-cursor-color ecolor
)))
195 (if (and (memq this-command
'(dabbrev-expand hippie-expand
))
196 (integerp viper-pre-command-point
)
197 (markerp viper-insert-point
)
198 (marker-position viper-insert-point
)
199 (> viper-insert-point viper-pre-command-point
))
200 (viper-move-marker-locally viper-insert-point viper-pre-command-point
)))
202 (defsubst viper-preserve-cursor-color
()
203 (or (memq this-command
'(self-insert-command
204 viper-del-backward-char-in-insert
205 viper-del-backward-char-in-replace
206 viper-delete-backward-char
209 (memq (viper-event-key last-command-event
)
210 '(up down left right
(meta f
) (meta b
)
211 (control n
) (control p
) (control f
) (control b
)))))
213 (defsubst viper-insert-state-pre-command-sentinel
()
214 (or (viper-preserve-cursor-color)
215 (viper-restore-cursor-color 'after-insert-mode
))
216 (if (and (memq this-command
'(dabbrev-expand hippie-expand
))
217 (markerp viper-insert-point
)
218 (marker-position viper-insert-point
))
219 (setq viper-pre-command-point
(marker-position viper-insert-point
))))
221 (defsubst viper-R-state-post-command-sentinel
()
222 ;; Restoring cursor color is needed despite
223 ;; viper-replace-state-pre-command-sentinel: When you jump to another buffer
224 ;; in another frame, the pre-command hook won't change cursor color to
225 ;; default in that other frame. So, if the second frame cursor was red and
226 ;; we set the point outside the replacement region, then the cursor color
227 ;; will remain red. Restoring the default, below, prevents this.
228 (if (and (<= (viper-replace-start) (point))
229 (<= (point) (viper-replace-end)))
230 (viper-change-cursor-color
231 (viper-frame-value viper-replace-overlay-cursor-color
))
232 (viper-restore-cursor-color 'after-replace-mode
)))
234 ;; to speed up, don't change cursor color before self-insert
235 ;; and common move commands
236 (defsubst viper-replace-state-pre-command-sentinel
()
237 (or (viper-preserve-cursor-color)
238 (viper-restore-cursor-color 'after-replace-mode
)))
241 ;; Make sure we don't delete more than needed.
242 ;; This is executed at viper-last-posn-in-replace-region
243 (defsubst viper-trim-replace-chars-to-delete-if-necessary
()
244 (setq viper-replace-chars-to-delete
246 (min viper-replace-chars-to-delete
247 ;; Don't delete more than to the end of repl overlay
248 (viper-chars-in-region
249 (viper-replace-end) viper-last-posn-in-replace-region
)
250 ;; point is viper-last-posn-in-replace-region now
251 ;; So, this limits deletion to the end of line
252 (viper-chars-in-region (point) (viper-line-pos 'end
))
256 (defun viper-replace-state-post-command-sentinel ()
257 ;; Restoring cursor color is needed despite
258 ;; viper-replace-state-pre-command-sentinel: When one jumps to another buffer
259 ;; in another frame, the pre-command hook won't change cursor color to
260 ;; default in that other frame. So, if the second frame cursor was red and
261 ;; we set the point outside the replacement region, then the cursor color
262 ;; will remain red. Restoring the default, below, fixes this problem.
264 ;; We optimize for some commands, like self-insert-command,
265 ;; viper-delete-backward-char, etc., since they either don't change
266 ;; cursor color or, if they terminate replace mode, the color will be changed
267 ;; in viper-finish-change
268 (or (viper-preserve-cursor-color)
269 (viper-restore-cursor-color 'after-replace-mode
))
271 ((eq viper-current-state
'replace-state
)
272 ;; delete characters to compensate for inserted chars.
273 (let ((replace-boundary (viper-replace-end)))
275 (goto-char viper-last-posn-in-replace-region
)
276 (viper-trim-replace-chars-to-delete-if-necessary)
277 (delete-char viper-replace-chars-to-delete
)
278 (setq viper-replace-chars-to-delete
0)
279 ;; terminate replace mode if reached replace limit
280 (if (= viper-last-posn-in-replace-region
(viper-replace-end))
281 (viper-finish-change)))
283 (when (viper-pos-within-region
284 (point) (viper-replace-start) replace-boundary
)
285 ;; the state may have changed in viper-finish-change above
286 (if (eq viper-current-state
'replace-state
)
287 (viper-change-cursor-color
288 (viper-frame-value viper-replace-overlay-cursor-color
)))
289 (setq viper-last-posn-in-replace-region
(point-marker)))))
290 ;; terminate replace mode if changed Viper states.
291 (t (viper-finish-change))))
296 ;; Change state to NEW-STATE---either emacs-state, vi-state, or insert-state.
297 (defun viper-change-state (new-state)
298 ;; Keep viper-post/pre-command-hooks fresh.
299 ;; We remove then add viper-post/pre-command-sentinel since it is very
300 ;; desirable that viper-pre-command-sentinel is the last hook and
301 ;; viper-post-command-sentinel is the first hook.
303 (when (featurep 'xemacs
)
304 (make-local-hook 'viper-after-change-functions
)
305 (make-local-hook 'viper-before-change-functions
)
306 (make-local-hook 'viper-post-command-hooks
)
307 (make-local-hook 'viper-pre-command-hooks
))
309 (remove-hook 'post-command-hook
'viper-post-command-sentinel
)
310 (add-hook 'post-command-hook
'viper-post-command-sentinel
)
311 (remove-hook 'pre-command-hook
'viper-pre-command-sentinel
)
312 (add-hook 'pre-command-hook
'viper-pre-command-sentinel t
)
313 ;; These hooks will be added back if switching to insert/replace mode
314 (remove-hook 'viper-post-command-hooks
315 'viper-insert-state-post-command-sentinel
'local
)
316 (remove-hook 'viper-pre-command-hooks
317 'viper-insert-state-pre-command-sentinel
'local
)
318 (setq viper-intermediate-command nil
)
319 (cond ((eq new-state
'vi-state
)
320 (cond ((member viper-current-state
'(insert-state replace-state
))
322 ;; move viper-last-posn-while-in-insert-state
323 ;; This is a normal hook that is executed in insert/replace
324 ;; states after each command. In Vi/Emacs state, it does
325 ;; nothing. We need to execute it here to make sure that
326 ;; the last posn was recorded when we hit ESC.
327 ;; It may be left unrecorded if the last thing done in
328 ;; insert/repl state was dabbrev-expansion or abbrev
329 ;; expansion caused by hitting ESC
330 (viper-insert-state-post-command-sentinel)
332 (condition-case conds
334 (viper-save-last-insertion
336 viper-last-posn-while-in-insert-state
)
337 (if viper-began-as-replace
338 (setq viper-began-as-replace nil
)
339 ;; repeat insert commands if numerical arg > 1
341 (viper-repeat-insert-command))))
343 (viper-message-conditions conds
)))
345 (if (> (length viper-last-insertion
) 0)
346 (viper-push-onto-ring viper-last-insertion
347 'viper-insertion-ring
))
349 (if viper-ESC-moves-cursor-back
350 (or (bolp) (viper-beginning-of-field) (backward-char 1))))
354 ((memq new-state
'(insert-state replace-state
))
355 (if (memq viper-current-state
'(emacs-state vi-state
))
356 (viper-move-marker-locally 'viper-insert-point
(point)))
357 (viper-move-marker-locally
358 'viper-last-posn-while-in-insert-state
(point))
359 (add-hook 'viper-post-command-hooks
360 'viper-insert-state-post-command-sentinel t
'local
)
361 (add-hook 'viper-pre-command-hooks
362 'viper-insert-state-pre-command-sentinel t
'local
))
365 ;; Nothing needs to be done to switch to emacs mode! Just set some
366 ;; variables, which is already done in viper-change-state-to-emacs!
369 ;; always turn off iso-accents-mode in vi-state, or else we won't be able to
370 ;; use the keys `,',^ , as they will do accents instead of Vi actions.
371 (cond ((eq new-state
'vi-state
) (viper-set-iso-accents-mode nil
));accents off
372 (viper-automatic-iso-accents (viper-set-iso-accents-mode t
));accents on
373 (t (viper-set-iso-accents-mode nil
)))
374 ;; Always turn off quail mode in vi state
375 (cond ((eq new-state
'vi-state
) (viper-set-input-method nil
)) ;intl input off
376 (viper-special-input-method (viper-set-input-method t
)) ;intl input on
377 (t (viper-set-input-method nil
)))
379 (setq viper-current-state new-state
)
381 (viper-update-syntax-classes)
382 (viper-normalize-minor-mode-map-alist)
383 (viper-adjust-keys-for new-state
)
384 (viper-set-mode-vars-for new-state
)
385 (viper-refresh-mode-line)
389 (defun viper-adjust-keys-for (state)
390 "Make necessary adjustments to keymaps before entering STATE."
391 (cond ((memq state
'(insert-state replace-state
))
392 (if viper-auto-indent
394 (define-key viper-insert-basic-map
"\C-m" 'viper-autoindent
)
395 (if viper-want-emacs-keys-in-insert
397 (define-key viper-insert-basic-map
"\C-j" nil
)
399 (define-key viper-insert-basic-map
"\C-j" 'viper-autoindent
)))
400 (define-key viper-insert-basic-map
"\C-m" nil
)
401 (define-key viper-insert-basic-map
"\C-j" nil
))
403 (setq viper-insert-diehard-minor-mode
404 (not viper-want-emacs-keys-in-insert
))
406 (if viper-want-ctl-h-help
408 (define-key viper-insert-basic-map
"\C-h" 'help-command
)
409 (define-key viper-replace-map
"\C-h" 'help-command
))
410 (define-key viper-insert-basic-map
411 "\C-h" 'viper-del-backward-char-in-insert
)
412 (define-key viper-replace-map
413 "\C-h" 'viper-del-backward-char-in-replace
))
414 ;; In XEmacs, C-h overrides backspace, so we make sure it doesn't.
415 (define-key viper-insert-basic-map
416 [backspace] 'viper-del-backward-char-in-insert)
417 (define-key viper-replace-map
418 [backspace] 'viper-del-backward-char-in-replace
)
419 ) ; end insert/replace case
421 (setq viper-vi-diehard-minor-mode
(not viper-want-emacs-keys-in-vi
))
422 (if viper-want-ctl-h-help
423 (define-key viper-vi-basic-map
"\C-h" 'help-command
)
424 (define-key viper-vi-basic-map
"\C-h" 'viper-backward-char
))
425 ;; In XEmacs, C-h overrides backspace, so we make sure it doesn't.
426 (define-key viper-vi-basic-map
[backspace] 'viper-backward-char))
430 ;; Normalizes minor-mode-map-alist by putting Viper keymaps first.
431 ;; This ensures that Viper bindings are in effect, regardless of which minor
432 ;; modes were turned on by the user or by other packages.
433 (defun viper-normalize-minor-mode-map-alist ()
434 (setq viper--intercept-key-maps
436 (cons 'viper-vi-intercept-minor-mode viper-vi-intercept-map)
437 (cons 'viper-insert-intercept-minor-mode viper-insert-intercept-map)
438 (cons 'viper-emacs-intercept-minor-mode viper-emacs-intercept-map)
440 (setq viper--key-maps
441 (list (cons 'viper-vi-minibuffer-minor-mode viper-minibuffer-map)
442 (cons 'viper-vi-local-user-minor-mode viper-vi-local-user-map)
443 (cons 'viper-vi-kbd-minor-mode viper-vi-kbd-map)
444 (cons 'viper-vi-global-user-minor-mode viper-vi-global-user-map)
445 (cons 'viper-vi-state-modifier-minor-mode
447 (cdr (assoc major-mode viper-vi-state-modifier-alist)))
448 (cdr (assoc major-mode viper-vi-state-modifier-alist))
450 (cons 'viper-vi-diehard-minor-mode viper-vi-diehard-map)
451 (cons 'viper-vi-basic-minor-mode viper-vi-basic-map)
452 (cons 'viper-replace-minor-mode viper-replace-map)
453 ;; viper-insert-minibuffer-minor-mode must come after
454 ;; viper-replace-minor-mode
455 (cons 'viper-insert-minibuffer-minor-mode
456 viper-minibuffer-map)
457 (cons 'viper-insert-local-user-minor-mode
458 viper-insert-local-user-map)
459 (cons 'viper-insert-kbd-minor-mode viper-insert-kbd-map)
460 (cons 'viper-insert-global-user-minor-mode
461 viper-insert-global-user-map)
462 (cons 'viper-insert-state-modifier-minor-mode
464 (cdr (assoc major-mode
465 viper-insert-state-modifier-alist)))
466 (cdr (assoc major-mode
467 viper-insert-state-modifier-alist))
469 (cons 'viper-insert-diehard-minor-mode viper-insert-diehard-map)
470 (cons 'viper-insert-basic-minor-mode viper-insert-basic-map)
471 (cons 'viper-emacs-local-user-minor-mode
472 viper-emacs-local-user-map)
473 (cons 'viper-emacs-kbd-minor-mode viper-emacs-kbd-map)
474 (cons 'viper-emacs-global-user-minor-mode
475 viper-emacs-global-user-map)
476 (cons 'viper-emacs-state-modifier-minor-mode
479 (assoc major-mode viper-emacs-state-modifier-alist)))
481 (assoc major-mode viper-emacs-state-modifier-alist))
485 ;; This var is not local in Emacs, so we make it local. It must be local
486 ;; because although the stack of minor modes can be the same for all buffers,
487 ;; the associated *keymaps* can be different. In Viper,
488 ;; viper-vi-local-user-map, viper-insert-local-user-map, and others can have
489 ;; different keymaps for different buffers. Also, the keymaps associated
490 ;; with viper-vi/insert-state-modifier-minor-mode can be different.
491 ;; ***This is needed only in case emulation-mode-map-alists is not defined.
492 ;; In emacs with emulation-mode-map-alists, nothing needs to be done
494 (and (fboundp 'add-to-ordered-list) (boundp 'emulation-mode-map-alists))
495 (set (make-local-variable 'minor-mode-map-alist)
496 (viper-append-filter-alist
497 (append viper--intercept-key-maps viper--key-maps)
498 minor-mode-map-alist)))
503 ;; Viper mode-changing commands and utilities
505 ;; Modifies mode-line-buffer-identification.
506 (defun viper-refresh-mode-line ()
507 (set (make-local-variable 'viper-mode-string)
508 (cond ((eq viper-current-state 'emacs-state) viper-emacs-state-id)
509 ((eq viper-current-state 'vi-state) viper-vi-state-id)
510 ((eq viper-current-state 'replace-state) viper-replace-state-id)
511 ((eq viper-current-state 'insert-state) viper-insert-state-id)))
513 ;; Sets Viper mode string in global-mode-string
514 (force-mode-line-update))
517 ;; Switch from Insert state to Vi state.
518 (defun viper-exit-insert-state ()
520 (viper-change-state-to-vi))
522 (defun viper-set-mode-vars-for (state)
523 "Sets Viper minor mode variables to put Viper's state STATE in effect."
526 (setq viper-vi-minibuffer-minor-mode nil
527 viper-insert-minibuffer-minor-mode nil
528 viper-vi-intercept-minor-mode nil
529 viper-insert-intercept-minor-mode nil
531 viper-vi-local-user-minor-mode nil
532 viper-vi-kbd-minor-mode nil
533 viper-vi-global-user-minor-mode nil
534 viper-vi-state-modifier-minor-mode nil
535 viper-vi-diehard-minor-mode nil
536 viper-vi-basic-minor-mode nil
538 viper-replace-minor-mode nil
540 viper-insert-local-user-minor-mode nil
541 viper-insert-kbd-minor-mode nil
542 viper-insert-global-user-minor-mode nil
543 viper-insert-state-modifier-minor-mode nil
544 viper-insert-diehard-minor-mode nil
545 viper-insert-basic-minor-mode nil
546 viper-emacs-intercept-minor-mode t
547 viper-emacs-local-user-minor-mode t
548 viper-emacs-kbd-minor-mode (not (viper-is-in-minibuffer))
549 viper-emacs-global-user-minor-mode t
550 viper-emacs-state-modifier-minor-mode t
554 (if (eq state 'vi-state) ; adjust for vi-state
556 viper-vi-intercept-minor-mode t
557 viper-vi-minibuffer-minor-mode (viper-is-in-minibuffer)
558 viper-vi-local-user-minor-mode t
559 viper-vi-kbd-minor-mode (not (viper-is-in-minibuffer))
560 viper-vi-global-user-minor-mode t
561 viper-vi-state-modifier-minor-mode t
562 ;; don't let the diehard keymap block command completion
563 ;; and other things in the minibuffer
564 viper-vi-diehard-minor-mode (not
565 (or viper-want-emacs-keys-in-vi
566 (viper-is-in-minibuffer)))
567 viper-vi-basic-minor-mode t
568 viper-emacs-intercept-minor-mode nil
569 viper-emacs-local-user-minor-mode nil
570 viper-emacs-kbd-minor-mode nil
571 viper-emacs-global-user-minor-mode nil
572 viper-emacs-state-modifier-minor-mode nil
575 ;; Insert and Replace states
576 (if (member state '(insert-state replace-state))
578 viper-insert-intercept-minor-mode t
579 viper-replace-minor-mode (eq state 'replace-state)
580 viper-insert-minibuffer-minor-mode (viper-is-in-minibuffer)
581 viper-insert-local-user-minor-mode t
582 viper-insert-kbd-minor-mode (not (viper-is-in-minibuffer))
583 viper-insert-global-user-minor-mode t
584 viper-insert-state-modifier-minor-mode t
585 ;; don't let the diehard keymap block command completion
586 ;; and other things in the minibuffer
587 viper-insert-diehard-minor-mode (not
589 viper-want-emacs-keys-in-insert
590 (viper-is-in-minibuffer)))
591 viper-insert-basic-minor-mode t
592 viper-emacs-intercept-minor-mode nil
593 viper-emacs-local-user-minor-mode nil
594 viper-emacs-kbd-minor-mode nil
595 viper-emacs-global-user-minor-mode nil
596 viper-emacs-state-modifier-minor-mode nil
600 (if (viper-has-face-support-p)
601 (setq viper-minibuffer-current-face
602 (cond ((eq state 'emacs-state) viper-minibuffer-emacs-face)
603 ((eq state 'vi-state) viper-minibuffer-vi-face)
604 ((memq state '(insert-state replace-state))
605 viper-minibuffer-insert-face))))
607 (if (viper-is-in-minibuffer)
608 (viper-set-minibuffer-overlay))
611 ;; This also takes care of the annoying incomplete lines in files.
612 ;; Also, this fixes `undo' to work vi-style for complex commands.
613 (defun viper-change-state-to-vi ()
614 "Change Viper state to Vi."
616 (if (and viper-first-time (not (viper-is-in-minibuffer)))
618 (if overwrite-mode (overwrite-mode -1))
619 (or (viper-overlay-p viper-replace-overlay)
620 (viper-set-replace-overlay (point-min) (point-min)))
621 (viper-hide-replace-overlay)
622 (if abbrev-mode (expand-abbrev))
623 (if (and auto-fill-function (> (current-column) fill-column))
624 (funcall auto-fill-function))
625 ;; don't leave whitespace lines around
626 (if (and (memq last-command
628 viper-open-line viper-Open-line
629 viper-replace-state-exit-cmd))
630 (viper-over-whitespace-line))
631 (indent-to-left-margin))
632 (viper-add-newline-at-eob-if-necessary)
635 (if (eq viper-current-state 'emacs-state)
636 (viper-restore-cursor-color 'after-emacs-mode)
637 (viper-restore-cursor-color 'after-insert-mode))
639 (viper-change-state 'vi-state)
641 ;; Protect against user errors in hooks
642 (condition-case conds
643 (run-hooks 'viper-vi-state-hook)
645 (viper-message-conditions conds)))))
647 (defun viper-change-state-to-insert ()
648 "Change Viper state to Insert."
650 (viper-change-state 'insert-state)
652 (or (viper-overlay-p viper-replace-overlay)
653 (viper-set-replace-overlay (point-min) (point-min)))
654 (viper-hide-replace-overlay)
656 (let ((icolor (viper-frame-value viper-insert-state-cursor-color)))
657 (or (stringp (viper-get-saved-cursor-color-in-insert-mode))
658 (string= (viper-get-cursor-color) icolor)
659 (viper-save-cursor-color 'before-insert-mode))
660 (viper-change-cursor-color icolor))
662 ;; Protect against user errors in hooks
663 (condition-case conds
664 (run-hooks 'viper-insert-state-hook)
666 (viper-message-conditions conds))))
668 (defsubst viper-downgrade-to-insert ()
669 ;; Protect against user errors in hooks
670 (condition-case conds
671 (run-hooks 'viper-insert-state-hook)
673 (viper-message-conditions conds)))
674 (setq viper-current-state 'insert-state
675 viper-replace-minor-mode nil))
679 ;; Change to replace state. When the end of replacement region is reached,
680 ;; replace state changes to insert state.
681 (defun viper-change-state-to-replace (&optional non-R-cmd)
682 (viper-change-state 'replace-state)
683 ;; Run insert-state-hook
684 (condition-case conds
685 (run-hooks 'viper-insert-state-hook 'viper-replace-state-hook)
687 (viper-message-conditions conds)))
690 (viper-start-replace)
691 ;; 'R' is implemented using Emacs's overwrite-mode
692 (viper-start-R-mode))
696 (defun viper-change-state-to-emacs ()
697 "Change Viper state to Emacs."
699 (or (viper-overlay-p viper-replace-overlay)
700 (viper-set-replace-overlay (point-min) (point-min)))
701 (viper-hide-replace-overlay)
703 (let ((ecolor (viper-frame-value viper-emacs-state-cursor-color)))
705 (or (stringp (viper-get-saved-cursor-color-in-emacs-mode))
706 (string= (viper-get-cursor-color) ecolor)
707 (viper-save-cursor-color 'before-emacs-mode))
708 (viper-change-cursor-color ecolor)))
710 (viper-change-state 'emacs-state)
712 ;; Protect against user errors in hooks
713 (condition-case conds
714 (run-hooks 'viper-emacs-state-hook)
716 (viper-message-conditions conds))))
718 ;; escape to emacs mode termporarily
719 (defun viper-escape-to-emacs (arg &optional events)
720 "Escape to Emacs state from Vi state for one Emacs command.
721 ARG is used as the prefix value for the executed command. If
722 EVENTS is a list of events, which become the beginning of the command."
724 (if (viper= last-command-char ?\\)
725 (message "Switched to EMACS state for the next command..."))
726 (viper-escape-to-state arg events 'emacs-state))
728 ;; escape to Vi mode termporarily
729 (defun viper-escape-to-vi (arg)
730 "Escape from Emacs state to Vi state for one Vi 1-character command.
731 If the Vi command that the user types has a prefix argument, e.g., `d2w', then
732 Vi's prefix argument will be used. Otherwise, the prefix argument passed to
733 `viper-escape-to-vi' is used."
735 (message "Switched to VI state for the next command...")
736 (viper-escape-to-state arg nil 'vi-state))
738 ;; Escape to STATE mode for one Emacs command.
739 (defun viper-escape-to-state (arg events state)
740 ;;(let (com key prefix-arg)
742 ;; this temporarily turns off Viper's minor mode keymaps
743 (viper-set-mode-vars-for state)
744 (viper-normalize-minor-mode-map-alist)
745 (if events (viper-set-unread-command-events events))
747 ;; protect against keyboard quit and other errors
749 (let (viper-vi-kbd-minor-mode
750 viper-insert-kbd-minor-mode
751 viper-emacs-kbd-minor-mode)
755 (key-binding (setq key (viper-read-key-sequence nil))))
756 ;; In case of binding indirection--chase definitions.
757 ;; Have to do it here because we execute this command under
758 ;; different keymaps, so command-execute may not do the
760 (while (vectorp com) (setq com (key-binding com))))
762 ;; Execute command com in the original Viper state, not in state
763 ;; `state'. Otherwise, if we switch buffers while executing the
764 ;; escaped to command, Viper's mode vars will remain those of
765 ;; `state'. When we return to the orig buffer, the bindings will be
767 (viper-set-mode-vars-for viper-current-state)
769 ;; this-command, last-command-char, last-command-event
770 (setq this-command com)
771 (if (featurep 'xemacs)
772 ;; XEmacs represents key sequences as vectors
773 (setq last-command-event
774 (viper-copy-event (viper-seq-last-elt key))
775 last-command-char (event-to-character last-command-event))
776 ;; Emacs represents them as sequences (str or vec)
777 (setq last-command-event
778 (viper-copy-event (viper-seq-last-elt key))
779 last-command-char last-command-event))
782 ;; pretend that current state is the state we excaped to
783 (let ((viper-current-state state))
784 (setq prefix-arg (or prefix-arg arg))
785 (command-execute com)))
789 ;; set state in the new buffer
790 (viper-set-mode-vars-for viper-current-state))
792 ;; This is used in order to allow reading characters according to the input
793 ;; method. The character is read in emacs and inserted into the buffer.
794 ;; If an input method is in effect, this might
795 ;; cause several characters to be combined into one.
796 ;; Also takes care of the iso-accents mode
797 (defun viper-special-read-and-insert-char ()
798 (viper-set-mode-vars-for 'emacs-state)
799 (viper-normalize-minor-mode-map-alist)
800 (if viper-special-input-method
801 (viper-set-input-method t))
802 (if viper-automatic-iso-accents
803 (viper-set-iso-accents-mode t))
805 (let (viper-vi-kbd-minor-mode
806 viper-insert-kbd-minor-mode
807 viper-emacs-kbd-minor-mode
809 (cond ((and viper-special-input-method
811 (fboundp 'quail-input-method))
812 ;; (let ...) is used to restore unread-command-events to the
813 ;; original state. We don't want anything left in there after
814 ;; key translation. (Such left-overs are possible if the user
815 ;; types a regular key.)
816 (let (unread-command-events)
817 ;; The next cmd and viper-set-unread-command-events
818 ;; are intended to prevent the input method
819 ;; from swallowing ^M, ^Q and other special characters
820 (setq ch (read-char-exclusive))
821 ;; replace ^M with the newline
822 (if (eq ch ?\C-m) (setq ch ?\n))
823 ;; Make sure ^V and ^Q work as quotation chars
824 (if (memq ch '(?\C-v ?\C-q))
825 (setq ch (read-char-exclusive)))
826 (viper-set-unread-command-events ch)
827 (quail-input-method nil)
829 (if (and ch (string= quail-current-str ""))
831 (insert quail-current-str))
833 (aref quail-current-str
834 (1- (length quail-current-str)))))
836 ((and viper-special-input-method
838 (fboundp 'quail-start-translation))
839 ;; same as above but for XEmacs, which doesn't have
840 ;; quail-input-method
841 (let (unread-command-events)
842 (setq ch (read-char-exclusive))
843 ;; replace ^M with the newline
844 (if (eq ch ?\C-m) (setq ch ?\n))
845 ;; Make sure ^V and ^Q work as quotation chars
846 (if (memq ch '(?\C-v ?\C-q))
847 (setq ch (read-char-exclusive)))
848 (viper-set-unread-command-events ch)
849 (quail-start-translation nil)
851 (if (and ch (string= quail-current-str ""))
853 (insert quail-current-str))
855 (aref quail-current-str
856 (1- (length quail-current-str)))))
858 ((and (boundp 'iso-accents-mode) iso-accents-mode)
859 (setq ch (aref (read-key-sequence nil) 0))
860 ;; replace ^M with the newline
861 (if (eq ch ?\C-m) (setq ch ?\n))
862 ;; Make sure ^V and ^Q work as quotation chars
863 (if (memq ch '(?\C-v ?\C-q))
864 (setq ch (aref (read-key-sequence nil) 0)))
867 ;;(setq ch (read-char-exclusive))
868 (setq ch (aref (read-key-sequence nil) 0))
869 (if (featurep 'xemacs)
870 (setq ch (event-to-character ch)))
871 ;; replace ^M with the newline
872 (if (eq ch ?\C-m) (setq ch ?\n))
873 ;; Make sure ^V and ^Q work as quotation chars
874 (if (memq ch '(?\C-v ?\C-q))
876 ;;(setq ch (read-char-exclusive))
877 (setq ch (aref (read-key-sequence nil) 0))
878 (if (featurep 'xemacs)
879 (setq ch (event-to-character ch))))
883 (setq last-command-event
884 (viper-copy-event (if (featurep 'xemacs)
885 (character-to-event ch) ch)))
890 (viper-set-input-method nil)
891 (viper-set-iso-accents-mode nil)
892 (viper-set-mode-vars-for viper-current-state)
896 (defun viper-exec-form-in-vi (form)
897 "Execute FORM in Vi state, regardless of the Ccurrent Vi state."
898 (let ((buff (current-buffer))
900 (viper-set-mode-vars-for 'vi-state)
903 (let (viper-vi-kbd-minor-mode) ; execute without kbd macros
904 (setq result (eval form)))
908 (if (not (equal buff (current-buffer))) ; cmd switched buffer
911 (viper-set-mode-vars-for viper-current-state)))
912 (viper-set-mode-vars-for viper-current-state)
915 (defun viper-exec-form-in-emacs (form)
916 "Execute FORM in Emacs, temporarily disabling Viper's minor modes.
917 Similar to viper-escape-to-emacs, but accepts forms rather than keystrokes."
918 (let ((buff (current-buffer))
920 (viper-set-mode-vars-for 'emacs-state)
921 (setq result (eval form))
922 (if (not (equal buff (current-buffer))) ; cmd switched buffer
925 (viper-set-mode-vars-for viper-current-state)))
926 (viper-set-mode-vars-for viper-current-state)
929 ;; This executes the last kbd event in emacs mode. Is used when we want to
930 ;; interpret certain keys directly in emacs (as, for example, in comint mode).
931 (defun viper-exec-key-in-emacs (arg)
933 (viper-escape-to-emacs arg last-command-event))
936 ;; This is needed because minor modes sometimes override essential Viper
937 ;; bindings. By letting Viper know which files these modes are in, it will
938 ;; arrange to reorganize minor-mode-map-alist so that things will work right.
939 (defun viper-harness-minor-mode (load-file)
940 "Familiarize Viper with a minor mode defined in LOAD_FILE.
941 Minor modes that have their own keymaps may overshadow Viper keymaps.
942 This function is designed to make Viper aware of the packages that define
945 (viper-harness-minor-mode load-file)
947 LOAD-FILE is a name of the file where the specific minor mode is defined.
948 Suffixes such as .el or .elc should be stripped."
950 (interactive "sEnter name of the load file: ")
952 (eval-after-load load-file '(viper-normalize-minor-mode-map-alist))
954 ;; Change the default for minor-mode-map-alist each time a harnessed minor
955 ;; mode adds its own keymap to the a-list.
957 (and (fboundp 'add-to-ordered-list) (boundp 'emulation-mode-map-alists))
959 load-file '(setq-default minor-mode-map-alist minor-mode-map-alist)))
963 (defun viper-ESC (arg)
964 "Emulate ESC key in Emacs.
965 Prevents multiple escape keystrokes if viper-no-multiple-ESC is true.
966 If viper-no-multiple-ESC is 'twice double ESC would ding in vi-state.
967 Other ESC sequences are emulated via the current Emacs's major mode
968 keymap. This is more convenient on TTYs, since this won't block
969 function keys such as up,down, etc. ESC will also will also work as
970 a Meta key in this case. When viper-no-multiple-ESC is nil, ESC functions
971 as a Meta key and any number of multiple escapes is allowed."
974 (cond ((and (not viper-no-multiple-ESC) (eq viper-current-state 'vi-state))
975 (setq char (viper-read-char-exclusive))
976 (viper-escape-to-emacs arg (list ?\e char) ))
977 ((and (eq viper-no-multiple-ESC 'twice)
978 (eq viper-current-state 'vi-state))
979 (setq char (viper-read-char-exclusive))
980 (if (= char (string-to-char viper-ESC-key))
982 (viper-escape-to-emacs arg (list ?\e char) )))
986 (defun viper-alternate-Meta-key (arg)
987 "Simulate Emacs Meta key."
989 (sit-for 1) (message "ESC-")
990 (viper-escape-to-emacs arg '(?\e)))
992 (defun viper-toggle-key-action ()
993 "Action bound to `viper-toggle-key'."
995 (if (and (< viper-expert-level 2) (equal viper-toggle-key "\C-z"))
996 (if (viper-window-display-p)
999 (viper-change-state-to-emacs)))
1002 ;; Intercept ESC sequences on dumb terminals.
1003 ;; Based on the idea contributed by Marcelino Veiga Tuimil <mveiga@dit.upm.es>
1005 ;; Check if last key was ESC and if so try to reread it as a function key.
1006 ;; But only if there are characters to read during a very short time.
1007 ;; Returns the last event, if any.
1008 (defun viper-envelop-ESC-key ()
1009 (let ((event last-input-event)
1012 (if (viper-ESC-event-p event)
1014 ;; Some versions of Emacs (eg., 22.50.8 have a bug, which makes even
1015 ;; a single ESC into ;; a fast keyseq. To guard against this, we
1016 ;; added a check if there are other events as well. Keep the next
1017 ;; line for the next time the bug reappears, so that will remember to
1019 ;;(if (and (viper-fast-keysequence-p) unread-command-events)
1020 (if (viper-fast-keysequence-p) ;; for Emacsen without the above bug
1022 (let (minor-mode-map-alist emulation-mode-map-alists)
1023 (viper-set-unread-command-events event)
1024 (setq keyseq (read-key-sequence nil 'continue-echo))
1026 ;; If keyseq translates into something that still has ESC
1027 ;; at the beginning, separate ESC from the rest of the seq.
1028 ;; In XEmacs we check for events that are keypress meta-key
1029 ;; and convert them into [escape key]
1031 ;; This is needed for the following reason:
1032 ;; If ESC is the first symbol, we interpret it as if the
1033 ;; user typed ESC and then quickly some other symbols.
1034 ;; If ESC is not the first one, then the key sequence
1035 ;; entered was apparently translated into a function key or
1036 ;; something (e.g., one may have
1037 ;; (define-key function-key-map "\e[192z" [f11])
1038 ;; which would translate the escape-sequence generated by
1039 ;; f11 in an xterm window into the symbolic key f11.
1041 ;; If `first-key' is not an ESC event, we make it into the
1042 ;; last-command-event in order to pretend that this key was
1043 ;; pressed. This is needed to allow arrow keys to be bound to
1044 ;; macros. Otherwise, viper-exec-mapped-kbd-macro will think
1045 ;; that the last event was ESC and so it'll execute whatever is
1046 ;; bound to ESC. (Viper macros can't be bound to
1048 (let* ((first-key (elt keyseq 0))
1049 (key-mod (event-modifiers first-key)))
1050 (cond ((and (viper-ESC-event-p first-key)
1051 (not viper-translate-all-ESC-keysequences))
1052 ;; put keys following ESC on the unread list
1053 ;; and return ESC as the key-sequence
1054 (viper-set-unread-command-events (viper-subseq keyseq 1))
1055 (setq last-input-event event
1056 keyseq (if (featurep 'emacs)
1058 (vector (character-to-event ?\e)))))
1059 ((and (featurep 'xemacs)
1060 (key-press-event-p first-key)
1061 (equal '(meta) key-mod))
1062 (viper-set-unread-command-events
1064 (character-to-event (event-key first-key)))
1065 (viper-subseq keyseq 1)))
1066 (setq last-input-event event
1067 keyseq (vector (character-to-event ?\e))))
1069 (setq last-command-event
1070 (viper-copy-event first-key)))
1074 ;; this is escape event with nothing after it
1075 ;; put in unread-command-event and then re-read
1076 (viper-set-unread-command-events event)
1077 (setq keyseq (read-key-sequence nil))
1079 ;; not an escape event
1080 (setq keyseq (vector event)))
1085 ;; Listen to ESC key.
1086 ;; If a sequence of keys starting with ESC is issued with very short delays,
1087 ;; interpret these keys in Emacs mode, so ESC won't be interpreted as a Vi key.
1088 (defun viper-intercept-ESC-key ()
1089 "Function that implements ESC key in Viper emulation of Vi."
1091 (let ((cmd (or (key-binding (viper-envelop-ESC-key))
1092 '(lambda () (interactive) (error "Viper bell")))))
1094 ;; call the actual function to execute ESC (if no other symbols followed)
1095 ;; or the key bound to the ESC sequence (if the sequence was issued
1096 ;; with very short delay between characters).
1097 (if (eq cmd 'viper-intercept-ESC-key)
1099 (cond ((eq viper-current-state 'vi-state)
1101 ((eq viper-current-state 'insert-state)
1102 'viper-exit-insert-state)
1103 ((eq viper-current-state 'replace-state)
1104 'viper-replace-state-exit-cmd)
1105 (t 'viper-change-state-to-vi)
1107 (call-interactively cmd)))
1112 ;; prefix argument for Vi mode
1114 ;; In Vi mode, prefix argument is a dotted pair (NUM . COM) where NUM
1115 ;; represents the numeric value of the prefix argument and COM represents
1116 ;; command prefix such as "c", "d", "m" and "y".
1118 ;; Get value part of prefix-argument ARG.
1119 (defsubst viper-p-val (arg)
1120 (cond ((null arg) 1)
1122 (if (or (null (car arg)) (equal (car arg) '(nil)))
1126 ;; Get raw value part of prefix-argument ARG.
1127 (defsubst viper-P-val (arg)
1128 (cond ((consp arg) (car arg))
1131 ;; Get com part of prefix-argument ARG.
1132 (defsubst viper-getcom (arg)
1133 (cond ((null arg) nil)
1134 ((consp arg) (cdr arg))
1137 ;; Get com part of prefix-argument ARG and modify it.
1138 (defun viper-getCom (arg)
1139 (let ((com (viper-getcom arg)))
1140 (cond ((viper= com ?c) ?c)
1141 ;; Previously, ?c was being converted to ?C, but this prevented
1142 ;; multiline replace regions.
1143 ;;((viper= com ?c) ?C)
1144 ((viper= com ?d) ?D)
1145 ((viper= com ?y) ?Y)
1149 ;; Compute numeric prefix arg value.
1150 ;; Invoked by EVENT-CHAR. COM is the command part obtained so far.
1151 (defun viper-prefix-arg-value (event-char com)
1152 (let ((viper-intermediate-command 'viper-digit-argument)
1154 ;; read while number
1155 (while (and (viper-characterp event-char)
1156 (>= event-char ?0) (<= event-char ?9))
1157 (setq value (+ (* (if (integerp value) value 0) 10) (- event-char ?0)))
1158 (setq event-char (viper-read-event-convert-to-char)))
1160 (setq prefix-arg value)
1161 (if com (setq prefix-arg (cons prefix-arg com)))
1162 (while (eq event-char ?U)
1163 (viper-describe-arg prefix-arg)
1164 (setq event-char (viper-read-event-convert-to-char)))
1166 (if (or com (and (not (eq viper-current-state 'vi-state))
1167 ;; make sure it is a Vi command
1168 (viper-characterp event-char)
1169 (viper-vi-command-p event-char)
1171 ;; If appears to be one of the vi commands,
1172 ;; then execute it with funcall and clear prefix-arg in order to not
1173 ;; confuse subsequent commands
1175 ;; last-command-char is the char we want emacs to think was typed
1176 ;; last. If com is not nil, the viper-digit-argument command was
1177 ;; called from within viper-prefix-arg command, such as `d', `w',
1178 ;; etc., i.e., the user typed, say, d2. In this case, `com' would be
1179 ;; `d', `w', etc. If viper-digit-argument was invoked by
1180 ;; viper-escape-to-vi (which is indicated by the fact that the
1181 ;; current state is not vi-state), then `event-char' represents the
1182 ;; vi command to be executed (e.g., `d', `w', etc). Again,
1183 ;; last-command-char must make emacs believe that this is the command
1185 (cond ((eq event-char 'return) (setq event-char ?\C-m))
1186 ((eq event-char 'delete) (setq event-char ?\C-?))
1187 ((eq event-char 'backspace) (setq event-char ?\C-h))
1188 ((eq event-char 'space) (setq event-char ?\ )))
1189 (setq last-command-char (or com event-char))
1190 (setq func (viper-exec-form-in-vi
1191 `(key-binding (char-to-string ,event-char))))
1192 (funcall func prefix-arg)
1193 (setq prefix-arg nil))
1194 ;; some other command -- let emacs do it in its own way
1195 (viper-set-unread-command-events event-char))
1199 ;; Vi operator as prefix argument."
1200 (defun viper-prefix-arg-com (char value com)
1205 (viper-memq-char char
1206 (list ?c ?d ?y ?! ?< ?> ?= ?# ?r ?R ?\"
1207 viper-buffer-search-char)))
1209 ;; this means that we already have a command character, so we
1210 ;; construct a com list and exit while. however, if char is "
1213 ;; new com is (CHAR . OLDCOM)
1214 (if (viper-memq-char char '(?# ?\")) (error "Viper bell"))
1215 (setq com (cons char com))
1217 ;; If com is nil we set com as char, and read more. Again, if char is
1218 ;; ", we read the name of register and store it in viper-use-register.
1219 ;; if char is !, =, or #, a complete com is formed so we exit the while
1221 (cond ((viper-memq-char char '(?! ?=))
1223 (setq char (read-char))
1226 ;; read a char and encode it as com
1227 (setq com (+ 128 (read-char)))
1228 (setq char (read-char)))
1230 (let ((reg (read-char)))
1231 (if (viper-valid-register reg)
1232 (setq viper-use-register reg)
1233 (error "Viper bell"))
1234 (setq char (read-char))))
1237 (setq char (read-char))))))
1240 ;; `com' is a single char, so we construct the command argument
1241 ;; and if `char' is `?', we describe the arg; otherwise
1242 ;; we prepare the command that will be executed at the end.
1244 (setq cmd-info (cons value com))
1245 (while (viper= char ?U)
1246 (viper-describe-arg cmd-info)
1247 (setq char (read-char)))
1248 ;; `char' is a movement cmd, a digit arg cmd, or a register cmd---so
1249 ;; we execute it at the very end
1250 (or (viper-movement-command-p char)
1251 (viper-digit-command-p char)
1252 (viper-regsuffix-command-p char)
1253 (viper= char ?!) ; bang command
1254 (viper= char ?g) ; the gg command (like G0)
1255 (error "Viper bell"))
1256 (setq cmd-to-exec-at-end
1257 (viper-exec-form-in-vi
1258 `(key-binding (char-to-string ,char)))))
1260 ;; as com is non-nil, this means that we have a command to execute
1261 (if (viper-memq-char (car com) '(?r ?R))
1262 ;; execute apropriate region command.
1263 (let ((char (car com)) (com (cdr com)))
1264 (setq prefix-arg (cons value com))
1265 (if (viper= char ?r)
1266 (viper-region prefix-arg)
1267 (viper-Region prefix-arg))
1269 (setq prefix-arg nil))
1270 ;; otherwise, reset prefix arg and call appropriate command
1271 (setq value (if (null value) 1 value))
1272 (setq prefix-arg nil)
1274 ;; If we change ?C to ?c here, then cc will enter replacement mode
1275 ;; rather than deleting lines. However, it will affect 1 less line
1276 ;; than normal. We decided to not use replacement mode here and
1277 ;; follow Vi, since replacement mode on n full lines can be achieved
1279 ((equal com '(?c . ?c)) (viper-line (cons value ?C)))
1280 ((equal com '(?d . ?d)) (viper-line (cons value ?D)))
1281 ((equal com '(?d . ?y)) (viper-yank-defun))
1282 ((equal com '(?y . ?y)) (viper-line (cons value ?Y)))
1283 ((equal com '(?< . ?<)) (viper-line (cons value ?<)))
1284 ((equal com '(?> . ?>)) (viper-line (cons value ?>)))
1285 ((equal com '(?! . ?!)) (viper-line (cons value ?!)))
1286 ((equal com '(?= . ?=)) (viper-line (cons value ?=)))
1288 ((equal (car com) ?g) (viper-goto-line 0))
1289 (t (error "Viper bell")))))
1291 (if cmd-to-exec-at-end
1293 (setq last-command-char char)
1294 (setq last-command-event
1296 (if (featurep 'xemacs) (character-to-event char) char)))
1298 (funcall cmd-to-exec-at-end cmd-info)
1300 (error "%s" (error-message-string err))))))
1303 (defun viper-describe-arg (arg)
1305 (setq val (viper-P-val arg)
1306 com (viper-getcom arg))
1309 (message "Value is nil, and command is nil")
1310 (message "Value is nil, and command is `%c'" com))
1312 (message "Value is `%d', and command is nil" val)
1313 (message "Value is `%d', and command is `%c'" val com)))))
1315 (defun viper-digit-argument (arg)
1316 "Begin numeric argument for the next command."
1318 (viper-leave-region-active)
1319 (viper-prefix-arg-value
1320 last-command-char (if (consp arg) (cdr arg) nil)))
1322 (defun viper-command-argument (arg)
1323 "Accept a motion command as an argument."
1325 (let ((viper-intermediate-command 'viper-command-argument))
1327 (viper-prefix-arg-com
1329 (cond ((null arg) nil)
1330 ((consp arg) (car arg))
1331 ((integerp arg) arg)
1332 (t (error viper-InvalidCommandArgument)))
1333 (cond ((null arg) nil)
1334 ((consp arg) (cdr arg))
1335 ((integerp arg) nil)
1336 (t (error viper-InvalidCommandArgument))))
1337 (quit (setq viper-use-register nil)
1338 (signal 'quit nil)))
1339 (viper-deactivate-mark)))
1342 ;; repeat last destructive command
1344 ;; Append region to text in register REG.
1345 ;; START and END are buffer positions indicating what to append.
1346 (defsubst viper-append-to-register (reg start end)
1347 (set-register reg (concat (if (stringp (get-register reg))
1348 (get-register reg) "")
1349 (buffer-substring start end))))
1351 ;; Saves last inserted text for possible use by viper-repeat command.
1352 (defun viper-save-last-insertion (beg end)
1354 (setq viper-last-insertion (buffer-substring beg end))
1356 ;; beg or end marker are somehow screwed up
1357 (setq viper-last-insertion nil)))
1358 (setq viper-last-insertion (buffer-substring beg end))
1359 (or (< (length viper-d-com) 5)
1360 (setcar (nthcdr 4 viper-d-com) viper-last-insertion))
1361 (or (null viper-command-ring)
1362 (ring-empty-p viper-command-ring)
1364 (setcar (nthcdr 4 (viper-current-ring-item viper-command-ring))
1365 viper-last-insertion)
1366 ;; del most recent elt, if identical to the second most-recent
1367 (viper-cleanup-ring viper-command-ring)))
1370 (defsubst viper-yank-last-insertion ()
1371 "Inserts the text saved by the previous viper-save-last-insertion command."
1373 (insert viper-last-insertion)
1377 ;; define functions to be executed
1379 ;; invoked by the `C' command
1380 (defun viper-exec-change (m-com com)
1381 (or (and (markerp viper-com-point) (marker-position viper-com-point))
1382 (set-marker viper-com-point (point) (current-buffer)))
1383 ;; handle C cmd at the eol and at eob.
1384 (if (or (and (eolp) (= viper-com-point (point)))
1385 (= viper-com-point (point-max)))
1387 (insert " ")(backward-char 1)))
1388 (if (= viper-com-point (point))
1389 (viper-forward-char-carefully))
1390 (set-mark viper-com-point)
1391 (if (eq m-com 'viper-next-line-at-bol)
1392 (viper-enlarge-region (mark t) (point)))
1393 (if (< (point) (mark t))
1394 (exchange-point-and-mark))
1395 (if (eq (preceding-char) ?\n)
1396 (viper-backward-char-carefully)) ; give back the newline
1397 (if (eq viper-intermediate-command 'viper-repeat)
1398 (viper-change-subr (mark t) (point))
1399 (viper-change (mark t) (point))
1402 ;; this is invoked by viper-substitute-line
1403 (defun viper-exec-Change (m-com com)
1405 (set-mark viper-com-point)
1406 (viper-enlarge-region (mark t) (point))
1407 (if viper-use-register
1409 (cond ((viper-valid-register viper-use-register '(letter digit))
1411 viper-use-register (mark t) (point) nil))
1412 ((viper-valid-register viper-use-register '(Letter))
1413 (viper-append-to-register
1414 (downcase viper-use-register) (mark t) (point)))
1415 (t (setq viper-use-register nil)
1416 (error viper-InvalidRegister viper-use-register)))
1417 (setq viper-use-register nil)))
1418 (delete-region (mark t) (point)))
1420 (if (eq viper-intermediate-command 'viper-repeat)
1421 (viper-yank-last-insertion)
1422 (viper-change-state-to-insert)
1425 (defun viper-exec-delete (m-com com)
1426 (or (and (markerp viper-com-point) (marker-position viper-com-point))
1427 (set-marker viper-com-point (point) (current-buffer)))
1428 (let (chars-deleted)
1429 (if viper-use-register
1431 (cond ((viper-valid-register viper-use-register '(letter digit))
1433 viper-use-register viper-com-point (point) nil))
1434 ((viper-valid-register viper-use-register '(Letter))
1435 (viper-append-to-register
1436 (downcase viper-use-register) viper-com-point (point)))
1437 (t (setq viper-use-register nil)
1438 (error viper-InvalidRegister viper-use-register)))
1439 (setq viper-use-register nil)))
1441 (if (eq last-command 'd-command) 'kill-region nil))
1442 (setq chars-deleted (abs (- (point) viper-com-point)))
1443 (if (> chars-deleted viper-change-notification-threshold)
1444 (unless (viper-is-in-minibuffer)
1445 (message "Deleted %d characters" chars-deleted)))
1446 (kill-region viper-com-point (point))
1447 (setq this-command 'd-command)
1448 (if viper-ex-style-motion
1449 (if (and (eolp) (not (bolp))) (backward-char 1)))))
1451 (defun viper-exec-Delete (m-com com)
1453 (set-mark viper-com-point)
1454 (viper-enlarge-region (mark t) (point))
1455 (let (lines-deleted)
1456 (if viper-use-register
1458 (cond ((viper-valid-register viper-use-register '(letter digit))
1460 viper-use-register (mark t) (point) nil))
1461 ((viper-valid-register viper-use-register '(Letter))
1462 (viper-append-to-register
1463 (downcase viper-use-register) (mark t) (point)))
1464 (t (setq viper-use-register nil)
1465 (error viper-InvalidRegister viper-use-register)))
1466 (setq viper-use-register nil)))
1468 (if (eq last-command 'D-command) 'kill-region nil))
1469 (setq lines-deleted (count-lines (point) viper-com-point))
1470 (if (> lines-deleted viper-change-notification-threshold)
1471 (unless (viper-is-in-minibuffer)
1472 (message "Deleted %d lines" lines-deleted)))
1473 (kill-region (mark t) (point))
1474 (if (eq m-com 'viper-line) (setq this-command 'D-command)))
1475 (back-to-indentation)))
1478 (defun viper-exec-yank (m-com com)
1479 (or (and (markerp viper-com-point) (marker-position viper-com-point))
1480 (set-marker viper-com-point (point) (current-buffer)))
1482 (if viper-use-register
1484 (cond ((viper-valid-register viper-use-register '(letter digit))
1486 viper-use-register viper-com-point (point) nil))
1487 ((viper-valid-register viper-use-register '(Letter))
1488 (viper-append-to-register
1489 (downcase viper-use-register) viper-com-point (point)))
1490 (t (setq viper-use-register nil)
1491 (error viper-InvalidRegister viper-use-register)))
1492 (setq viper-use-register nil)))
1493 (setq last-command nil)
1494 (copy-region-as-kill viper-com-point (point))
1495 (setq chars-saved (abs (- (point) viper-com-point)))
1496 (if (> chars-saved viper-change-notification-threshold)
1497 (unless (viper-is-in-minibuffer)
1498 (message "Saved %d characters" chars-saved)))
1499 (goto-char viper-com-point)))
1502 (defun viper-exec-Yank (m-com com)
1504 (set-mark viper-com-point)
1505 (viper-enlarge-region (mark t) (point))
1507 (if viper-use-register
1509 (cond ((viper-valid-register viper-use-register '(letter digit))
1511 viper-use-register (mark t) (point) nil))
1512 ((viper-valid-register viper-use-register '(Letter))
1513 (viper-append-to-register
1514 (downcase viper-use-register) (mark t) (point)))
1515 (t (setq viper-use-register nil)
1516 (error viper-InvalidRegister viper-use-register)))
1517 (setq viper-use-register nil)))
1518 (setq last-command nil)
1519 (copy-region-as-kill (mark t) (point))
1520 (setq lines-saved (count-lines (mark t) (point)))
1521 (if (> lines-saved viper-change-notification-threshold)
1522 (unless (viper-is-in-minibuffer)
1523 (message "Saved %d lines" lines-saved)))))
1524 (viper-deactivate-mark)
1525 (goto-char viper-com-point))
1527 (defun viper-exec-bang (m-com com)
1529 (set-mark viper-com-point)
1530 (viper-enlarge-region (mark t) (point))
1531 (exchange-point-and-mark)
1532 (shell-command-on-region
1535 (setq viper-last-shell-com
1536 (viper-read-string-with-history
1539 'viper-shell-history
1540 (car viper-shell-history)
1542 viper-last-shell-com)
1545 (defun viper-exec-equals (m-com com)
1547 (set-mark viper-com-point)
1548 (viper-enlarge-region (mark t) (point))
1549 (if (> (mark t) (point)) (exchange-point-and-mark))
1550 (indent-region (mark t) (point) nil)))
1552 (defun viper-exec-shift (m-com com)
1554 (set-mark viper-com-point)
1555 (viper-enlarge-region (mark t) (point))
1556 (if (> (mark t) (point)) (exchange-point-and-mark))
1557 (indent-rigidly (mark t) (point)
1560 (- viper-shift-width))))
1561 ;; return point to where it was before shift
1562 (goto-char viper-com-point))
1564 ;; this is needed because some commands fake com by setting it to ?r, which
1565 ;; denotes repeated insert command.
1566 (defsubst viper-exec-dummy (m-com com)
1569 (defun viper-exec-buffer-search (m-com com)
1570 (setq viper-s-string
1571 (regexp-quote (buffer-substring (point) viper-com-point)))
1572 (setq viper-s-forward t)
1573 (setq viper-search-history (cons viper-s-string viper-search-history))
1574 (setq viper-intermediate-command 'viper-exec-buffer-search)
1575 (viper-search viper-s-string viper-s-forward 1))
1577 (defvar viper-exec-array (make-vector 128 nil))
1579 ;; Using a dispatch array allows adding functions like buffer search
1580 ;; without affecting other functions. Buffer search can now be bound
1581 ;; to any character.
1583 (aset viper-exec-array ?c 'viper-exec-change)
1584 (aset viper-exec-array ?C 'viper-exec-Change)
1585 (aset viper-exec-array ?d 'viper-exec-delete)
1586 (aset viper-exec-array ?D 'viper-exec-Delete)
1587 (aset viper-exec-array ?y 'viper-exec-yank)
1588 (aset viper-exec-array ?Y 'viper-exec-Yank)
1589 (aset viper-exec-array ?r 'viper-exec-dummy)
1590 (aset viper-exec-array ?! 'viper-exec-bang)
1591 (aset viper-exec-array ?< 'viper-exec-shift)
1592 (aset viper-exec-array ?> 'viper-exec-shift)
1593 (aset viper-exec-array ?= 'viper-exec-equals)
1597 ;; This function is called by various movement commands to execute a
1598 ;; destructive command on the region specified by the movement command. For
1599 ;; instance, if the user types cw, then the command viper-forward-word will
1600 ;; call viper-execute-com to execute viper-exec-change, which eventually will
1601 ;; call viper-change to invoke the replace mode on the region.
1603 ;; The var viper-d-com is set to (M-COM VAL COM REG INSETED-TEXT COMMAND-KEYS)
1604 ;; via a call to viper-set-destructive-command, for later use by viper-repeat.
1605 (defun viper-execute-com (m-com val com)
1606 (let ((reg viper-use-register))
1607 ;; this is the special command `#'
1609 (viper-special-prefix-com (- com 128))
1610 (let ((fn (aref viper-exec-array com)))
1612 (error "%c: %s" com viper-InvalidViCommand)
1613 (funcall fn m-com com))))
1614 (if (viper-dotable-command-p com)
1615 (viper-set-destructive-command
1616 (list m-com val com reg nil nil)))
1620 (defun viper-repeat (arg)
1621 "Re-execute last destructive command.
1622 Use the info in viper-d-com, which has the form
1623 \(com val ch reg inserted-text command-keys\),
1624 where `com' is the command to be re-executed, `val' is the
1625 argument to `com', `ch' is a flag for repeat, and `reg' is optional;
1626 if it exists, it is the name of the register for `com'.
1627 If the prefix argument, ARG, is non-nil, it is used instead of `val'."
1629 (let ((save-point (point)) ; save point before repeating prev cmd
1630 ;; Pass along that we are repeating a destructive command
1631 ;; This tells viper-set-destructive-command not to update
1632 ;; viper-command-ring
1633 (viper-intermediate-command 'viper-repeat))
1634 (if (eq last-command 'viper-undo)
1635 ;; if the last command was viper-undo, then undo-more
1637 ;; otherwise execute the command stored in viper-d-com. if arg is
1638 ;; non-nil its prefix value is used as new prefix value for the command.
1639 (let ((m-com (car viper-d-com))
1640 (val (viper-P-val arg))
1641 (com (nth 2 viper-d-com))
1642 (reg (nth 3 viper-d-com)))
1643 (if (null val) (setq val (nth 1 viper-d-com)))
1644 (if (null m-com) (error "No previous command to repeat"))
1645 (setq viper-use-register reg)
1646 (if (nth 4 viper-d-com) ; text inserted by command
1647 (setq viper-last-insertion (nth 4 viper-d-com)
1648 viper-d-char (nth 4 viper-d-com)))
1649 (funcall m-com (cons val com))
1650 (cond ((and (< save-point (point)) viper-keep-point-on-repeat)
1651 (goto-char save-point)) ; go back to before repeat.
1652 ((and (< save-point (point)) viper-ex-style-editing)
1653 (or (bolp) (backward-char 1))))
1654 (if (and (eolp) (not (bolp)))
1657 (viper-adjust-undo) ; take care of undo
1658 ;; If the prev cmd was rotating the command ring, this means that `.' has
1659 ;; just executed a command from that ring. So, push it on the ring again.
1660 ;; If we are just executing previous command , then don't push viper-d-com
1661 ;; because viper-d-com is not fully constructed in this case (its keys and
1662 ;; the inserted text may be nil). Besides, in this case, the command
1663 ;; executed by `.' is already on the ring.
1664 (if (eq last-command 'viper-display-current-destructive-command)
1665 (viper-push-onto-ring viper-d-com 'viper-command-ring))
1666 (viper-deactivate-mark)
1669 (defun viper-repeat-from-history ()
1670 "Repeat a destructive command from history.
1671 Doesn't change viper-command-ring in any way, so `.' will work as before
1672 executing this command.
1673 This command is supposed to be bound to a two-character Vi macro where
1674 the second character is a digit 0 to 9. The digit indicates which
1675 history command to execute. `<char>0' is equivalent to `.', `<char>1'
1676 invokes the command before that, etc."
1678 (let* ((viper-intermediate-command 'repeating-display-destructive-command)
1679 (idx (cond (viper-this-kbd-macro
1681 (symbol-name (elt viper-this-kbd-macro 1))))
1684 (viper-d-com viper-d-com))
1686 (or (and (numberp num) (<= 0 num) (<= num 9))
1691 "`viper-repeat-from-history' must be invoked as a Vi macro bound to `<key><digit>'")))
1693 (setq viper-d-com (viper-special-ring-rotate1 viper-command-ring -1))
1694 (setq num (1- num)))
1697 (viper-special-ring-rotate1 viper-command-ring 1)
1698 (setq num (1+ num)))
1702 ;; The hash-command. It is invoked interactively by the key sequence #<char>.
1703 ;; The chars that can follow `#' are determined by viper-hash-command-p
1704 (defun viper-special-prefix-com (char)
1705 (cond ((viper= char ?c)
1706 (downcase-region (min viper-com-point (point))
1707 (max viper-com-point (point))))
1709 (upcase-region (min viper-com-point (point))
1710 (max viper-com-point (point))))
1712 (push-mark viper-com-point t)
1713 ;; execute the last emacs kbd macro on each line of the region
1714 (viper-global-execute))
1716 (push-mark viper-com-point t)
1717 (viper-quote-region))
1719 (funcall viper-spell-function viper-com-point (point)))
1720 (t (error "#%c: %s" char viper-InvalidViCommand))))
1725 ;; hook used inside undo
1726 (defvar viper-undo-functions nil)
1728 ;; Runs viper-before-change-functions inside before-change-functions
1729 (defun viper-undo-sentinel (beg end length)
1730 (run-hook-with-args 'viper-undo-functions beg end length))
1732 (add-hook 'after-change-functions 'viper-undo-sentinel)
1734 ;; Hook used in viper-undo
1735 (defun viper-after-change-undo-hook (beg end len)
1736 (if (and (boundp 'undo-in-progress) undo-in-progress)
1737 (setq undo-beg-posn beg
1738 undo-end-posn (or end beg))
1739 ;; some other hooks may be changing various text properties in
1740 ;; the buffer in response to 'undo'; so remove this hook to avoid
1741 ;; its repeated invocation
1742 (remove-hook 'viper-undo-functions 'viper-after-change-undo-hook 'local)
1745 (defun viper-undo ()
1746 "Undo previous change."
1749 (let ((modified (buffer-modified-p))
1750 (before-undo-pt (point-marker))
1751 undo-beg-posn undo-end-posn)
1753 ;; the viper-after-change-undo-hook removes itself after the 1st invocation
1754 (add-hook 'viper-undo-functions 'viper-after-change-undo-hook nil 'local)
1758 ;;(setq undo-beg-posn (or undo-beg-posn (point))
1759 ;; undo-end-posn (or undo-end-posn (point)))
1760 ;;(setq undo-beg-posn (or undo-beg-posn before-undo-pt)
1761 ;; undo-end-posn (or undo-end-posn undo-beg-posn))
1763 (if (and undo-beg-posn undo-end-posn)
1765 (goto-char undo-beg-posn)
1767 (if (and viper-keep-point-on-undo
1768 (pos-visible-in-window-p before-undo-pt))
1770 (push-mark (point-marker) t)
1771 (viper-sit-for-short 300)
1772 (goto-char undo-end-posn)
1773 (viper-sit-for-short 300)
1774 (if (pos-visible-in-window-p undo-beg-posn)
1775 (goto-char before-undo-pt)
1776 (goto-char undo-beg-posn)))
1777 (push-mark before-undo-pt t))
1780 (if (and (eolp) (not (bolp))) (backward-char 1))
1782 (setq this-command 'viper-undo))
1784 ;; Continue undoing previous changes.
1785 (defun viper-undo-more ()
1786 (message "undo more!")
1790 (message "No further undo information in this buffer")))
1791 (if (and (eolp) (not (bolp))) (backward-char 1))
1792 (setq this-command 'viper-undo))
1794 ;; The following two functions are used to set up undo properly.
1795 ;; In VI, unlike Emacs, if you open a line, say, and add a bunch of lines,
1796 ;; they are undone all at once.
1797 (defun viper-adjust-undo ()
1798 (if viper-undo-needs-adjustment
1799 (let ((inhibit-quit t)
1801 (setq viper-undo-needs-adjustment nil)
1802 (if (listp buffer-undo-list)
1803 (if (setq tmp (memq viper-buffer-undo-list-mark buffer-undo-list))
1805 (setq tmp2 (cdr tmp)) ; the part after mark
1807 ;; cut tail from buffer-undo-list temporarily by direct
1808 ;; manipulation with pointers in buffer-undo-list
1811 (setq buffer-undo-list (delq nil buffer-undo-list))
1812 (setq buffer-undo-list
1813 (delq viper-buffer-undo-list-mark buffer-undo-list))
1814 ;; restore tail of buffer-undo-list
1815 (setq buffer-undo-list (nconc buffer-undo-list tmp2)))
1816 (setq buffer-undo-list (delq nil buffer-undo-list)))))
1820 (defun viper-set-complex-command-for-undo ()
1821 (if (listp buffer-undo-list)
1822 (if (not viper-undo-needs-adjustment)
1823 (let ((inhibit-quit t))
1824 (setq buffer-undo-list
1825 (cons viper-buffer-undo-list-mark buffer-undo-list))
1826 (setq viper-undo-needs-adjustment t)))))
1829 ;;; Viper's destructive Command ring utilities
1831 (defun viper-display-current-destructive-command ()
1832 (let ((text (nth 4 viper-d-com))
1833 (keys (nth 5 viper-d-com))
1836 (setq this-command 'viper-display-current-destructive-command)
1838 (message " `.' runs %s%s"
1839 (concat "`" (viper-array-to-string keys) "'")
1840 (viper-abbreviate-string
1841 (if (featurep 'xemacs)
1842 (replace-in-string ; xemacs
1843 (cond ((characterp text) (char-to-string text))
1844 ((stringp text) text)
1850 " inserting `" "'" " ......."))
1854 ;; don't change viper-d-com if it was viper-repeat command invoked with `.'
1855 ;; or in some other way (non-interactively).
1856 (defun viper-set-destructive-command (list)
1857 (or (eq viper-intermediate-command 'viper-repeat)
1859 (setq viper-d-com list)
1860 (setcar (nthcdr 5 viper-d-com)
1861 (viper-array-to-string (if (arrayp viper-this-command-keys)
1862 viper-this-command-keys
1863 (this-command-keys))))
1864 (viper-push-onto-ring viper-d-com 'viper-command-ring)))
1865 (setq viper-this-command-keys nil))
1868 (defun viper-prev-destructive-command (next)
1869 "Find previous destructive command in the history of destructive commands.
1870 With prefix argument, find next destructive command."
1872 (let (cmd viper-intermediate-command)
1873 (if (eq last-command 'viper-display-current-destructive-command)
1874 ;; repeated search through command history
1875 (setq viper-intermediate-command
1876 'repeating-display-destructive-command)
1877 ;; first search through command history--set temp ring
1878 (setq viper-temp-command-ring (ring-copy viper-command-ring)))
1880 (viper-special-ring-rotate1 viper-temp-command-ring 1)
1881 (viper-special-ring-rotate1 viper-temp-command-ring -1)))
1884 (setq viper-d-com cmd))
1885 (viper-display-current-destructive-command)))
1888 (defun viper-next-destructive-command ()
1889 "Find next destructive command in the history of destructive commands."
1891 (viper-prev-destructive-command 'next))
1894 (defun viper-insert-prev-from-insertion-ring (arg)
1895 "Cycle through insertion ring in the direction of older insertions.
1896 Undoes previous insertion and inserts new.
1897 With prefix argument, cycles in the direction of newer elements.
1898 In minibuffer, this command executes whatever the invocation key is bound
1899 to in the global map, instead of cycling through the insertion ring."
1901 (let (viper-intermediate-command)
1902 (if (eq last-command 'viper-insert-from-insertion-ring)
1903 (progn ; repeated search through insertion history
1904 (setq viper-intermediate-command 'repeating-insertion-from-ring)
1905 (if (eq viper-current-state 'replace-state)
1907 (if viper-last-inserted-string-from-insertion-ring
1908 (backward-delete-char
1909 (length viper-last-inserted-string-from-insertion-ring))))
1911 ;;first search through insertion history
1912 (setq viper-temp-insertion-ring (ring-copy viper-insertion-ring)))
1913 (setq this-command 'viper-insert-from-insertion-ring)
1914 ;; so that things will be undone properly
1915 (setq buffer-undo-list (cons nil buffer-undo-list))
1916 (setq viper-last-inserted-string-from-insertion-ring
1917 (viper-special-ring-rotate1 viper-temp-insertion-ring (if arg 1 -1)))
1919 ;; this change of viper-intermediate-command must come after
1920 ;; viper-special-ring-rotate1, so that the ring will rotate, but before the
1922 (setq viper-intermediate-command nil)
1923 (if viper-last-inserted-string-from-insertion-ring
1924 (insert viper-last-inserted-string-from-insertion-ring))
1927 (defun viper-insert-next-from-insertion-ring ()
1928 "Cycle through insertion ring in the direction of older insertions.
1929 Undo previous insertion and inserts new."
1931 (viper-insert-prev-from-insertion-ring 'next))
1935 ;; some region utilities
1937 ;; If at the last line of buffer, add \\n before eob, if newline is missing.
1938 (defun viper-add-newline-at-eob-if-necessary ()
1941 ;; make sure all lines end with newline, unless in the minibuffer or
1942 ;; when requested otherwise (require-final-newline is nil)
1947 require-final-newline
1948 ;; add newline only if we actually edited buffer. otherwise it
1949 ;; might unintentionally modify binary buffers
1951 (not (viper-is-in-minibuffer))
1952 (not buffer-read-only))
1953 ;; text property may be read-only
1960 (defun viper-yank-defun ()
1962 (copy-region-as-kill (point) (mark t)))
1964 ;; Enlarge region between BEG and END.
1965 (defun viper-enlarge-region (beg end)
1966 (or beg (setq beg end)) ; if beg is nil, set to end
1967 (or end (setq end beg)) ; if end is nil, set to beg
1970 (progn (goto-char beg) (set-mark end))
1974 (exchange-point-and-mark)
1975 (if (or (not (eobp)) (not (bolp))) (forward-line 1))
1976 (if (not (eobp)) (beginning-of-line))
1977 (if (> beg end) (exchange-point-and-mark)))
1980 ;; Quote region by each line with a user supplied string.
1981 (defun viper-quote-region ()
1982 (let ((quote-str viper-quote-string)
1983 (donot-change-dafault t))
1985 (viper-read-string-with-history
1988 'viper-quote-region-history
1989 (cond ((string-match "tex.*-mode" (symbol-name major-mode)) "%%")
1990 ((string-match "java.*-mode" (symbol-name major-mode)) "//")
1991 ((string-match "perl.*-mode" (symbol-name major-mode)) "#")
1992 ((string-match "lisp.*-mode" (symbol-name major-mode)) ";;")
1993 ((memq major-mode '(c-mode cc-mode c++-mode)) "//")
1994 ((memq major-mode '(sh-mode shell-mode)) "#")
1995 (t (setq donot-change-dafault nil)
1997 (or donot-change-dafault
1998 (setq viper-quote-string quote-str))
1999 (viper-enlarge-region (point) (mark t))
2000 (if (> (point) (mark t)) (exchange-point-and-mark))
2004 (while (and (< (point) (mark t)) (bolp))
2009 ;; Tells whether BEG is on the same line as END.
2010 ;; If one of the args is nil, it'll return nil.
2011 (defun viper-same-line (beg end)
2012 (let ((selective-display nil)
2015 (if (and beg end (> beg end))
2020 (cond ((or (> beg (point-max)) (> end (point-max))) ; out of range
2023 ;; This 'if' is needed because Emacs treats the next empty line
2024 ;; as part of the previous line.
2025 (if (= (viper-line-pos 'start) end)
2027 (<= (+ incr (count-lines beg end)) 1))))
2031 ;; Check if the string ends with a newline.
2032 (defun viper-end-with-a-newline-p (string)
2033 (or (string= string "")
2034 (= (viper-seq-last-elt string) ?\n)))
2036 (defun viper-tmp-insert-at-eob (msg)
2037 (let ((savemax (point-max)))
2041 (goto-char savemax) (delete-region (point) (point-max))
2046 ;;; Minibuffer business
2048 (defsubst viper-set-minibuffer-style ()
2049 (add-hook 'minibuffer-setup-hook 'viper-minibuffer-setup-sentinel)
2050 (add-hook 'post-command-hook 'viper-minibuffer-post-command-hook))
2053 (defun viper-minibuffer-setup-sentinel ()
2054 (let ((hook (if viper-vi-style-in-minibuffer
2055 'viper-change-state-to-insert
2056 'viper-change-state-to-emacs)))
2057 ;; making buffer-local variables so that normal buffers won't affect the
2058 ;; minibuffer and vice versa. Otherwise, command arguments will affect
2059 ;; minibuffer ops and insertions from the minibuffer will change those in
2060 ;; the normal buffers
2061 (make-local-variable 'viper-d-com)
2062 (make-local-variable 'viper-last-insertion)
2063 (make-local-variable 'viper-command-ring)
2064 (setq viper-d-com nil
2065 viper-last-insertion nil
2066 viper-command-ring nil)
2070 ;; Thie is a temp hook that uses free variables init-message and initial.
2071 ;; A dirty feature, but it is the simplest way to have it do the right thing.
2072 ;; The INIT-MESSAGE and INITIAL vars come from the scope set by
2073 ;; viper-read-string-with-history
2074 (defun viper-minibuffer-standard-hook ()
2075 (if (stringp init-message)
2076 (viper-tmp-insert-at-eob init-message))
2077 (if (stringp initial)
2079 ;; don't wait if we have unread events or in kbd macro
2080 (or unread-command-events
2083 (if (fboundp 'minibuffer-prompt-end)
2084 (delete-region (minibuffer-prompt-end) (point-max))
2088 (defsubst viper-minibuffer-real-start ()
2089 (if (fboundp 'minibuffer-prompt-end)
2090 (minibuffer-prompt-end)
2093 (defun viper-minibuffer-post-command-hook()
2094 (when (active-minibuffer-window)
2095 (when (< (point) (viper-minibuffer-real-start))
2096 (goto-char (viper-minibuffer-real-start)))))
2099 ;; Interpret last event in the local map first; if fails, use exit-minibuffer.
2100 ;; Run viper-minibuffer-exit-hook before exiting.
2101 (defun viper-exit-minibuffer ()
2102 "Exit minibuffer Viper way."
2105 (setq command (local-key-binding (char-to-string last-command-char)))
2106 (run-hooks 'viper-minibuffer-exit-hook)
2108 (command-execute command)
2109 (exit-minibuffer))))
2112 (defcustom viper-smart-suffix-list
2113 '("" "tex" "c" "cc" "C" "java" "el" "html" "htm" "xml"
2114 "pl" "flr" "P" "p" "h" "H")
2115 "*List of suffixes that Viper tries to append to filenames ending with a `.'.
2116 This is useful when the current directory contains files with the same
2117 prefix and many different suffixes. Usually, only one of the suffixes
2118 represents an editable file. However, file completion will stop at the `.'
2119 The smart suffix feature lets you hit RET in such a case, and Viper will
2120 select the appropriate suffix.
2122 Suffixes are tried in the order given and the first suffix for which a
2123 corresponding file exists is selected. If no file exists for any of the
2124 suffixes, the user is asked to confirm.
2126 To turn this feature off, set this variable to nil."
2127 :type '(repeat string)
2131 ;; Try to add a suitable suffix to files whose name ends with a `.'
2132 ;; Useful when the user hits RET on a non-completed file name.
2133 ;; Used as a minibuffer exit hook in read-file-name
2134 (defun viper-file-add-suffix ()
2136 (len (length viper-smart-suffix-list))
2137 (file (buffer-substring-no-properties
2138 (viper-minibuffer-real-start) (point-max)))
2140 (goto-char (point-max))
2141 (if (and viper-smart-suffix-list (string-match "\\.$" file))
2143 (while (and (not found) (< count len))
2144 (setq suff (nth count viper-smart-suffix-list)
2147 (format "%s%s" (substitute-in-file-name file) suff))
2154 (viper-tmp-insert-at-eob " [Please complete file name]")
2156 (while (not (memq cmd
2157 '(exit-minibuffer viper-exit-minibuffer)))
2159 (key-binding (setq key (read-key-sequence nil))))
2160 (cond ((eq cmd 'self-insert-command)
2161 (if (featurep 'xemacs)
2162 (insert (events-to-keys key)) ; xemacs
2163 (insert key) ; emacs
2165 ((memq cmd '(exit-minibuffer viper-exit-minibuffer))
2167 (t (command-execute cmd)))
2172 (defun viper-minibuffer-trim-tail ()
2173 "Delete junk at the end of the first line of the minibuffer input.
2174 Remove this function from `viper-minibuffer-exit-hook', if this causes
2176 (if (viper-is-in-minibuffer)
2177 (let ((inhibit-field-text-motion t))
2178 (goto-char (viper-minibuffer-real-start))
2180 (delete-region (point) (point-max)))))
2183 ;;; Reading string with history
2185 (defun viper-read-string-with-history (prompt &optional initial
2186 history-var default keymap
2188 ;; Read string, prompting with PROMPT and inserting the INITIAL
2189 ;; value. Uses HISTORY-VAR. DEFAULT is the default value to accept if the
2190 ;; input is an empty string.
2191 ;; Default value is displayed until the user types something in the
2193 ;; KEYMAP is used, if given, instead of minibuffer-local-map.
2194 ;; INIT-MESSAGE is the message temporarily displayed after entering the
2196 (let ((minibuffer-setup-hook
2197 ;; stolen from add-hook
2199 (if (boundp 'minibuffer-setup-hook)
2200 minibuffer-setup-hook
2203 'viper-minibuffer-standard-hook
2204 (if (or (not (listp old)) (eq (car old) 'lambda))
2210 (setq keymap (or keymap minibuffer-local-map)
2211 initial (or initial "")
2212 temp-msg (if default
2213 (format "(default %s) " default)
2216 (setq viper-incomplete-ex-cmd nil)
2217 (setq val (read-from-minibuffer prompt
2218 (concat temp-msg initial val padding)
2219 keymap nil history-var))
2220 (setq minibuffer-setup-hook nil
2221 padding (viper-array-to-string (this-command-keys))
2223 ;; the following tries to be smart about what to put in history
2224 (if (not (string= val (car (eval history-var))))
2225 (set history-var (cons val (eval history-var))))
2226 (if (or (string= (nth 0 (eval history-var)) (nth 1 (eval history-var)))
2227 (string= (nth 0 (eval history-var)) ""))
2228 (set history-var (cdr (eval history-var))))
2229 ;; If the user enters nothing but the prev cmd wasn't viper-ex,
2230 ;; viper-command-argument, or `! shell-command', this probably means
2231 ;; that the user typed something then erased. Return "" in this case, not
2232 ;; the default---the default is too confusing in this case.
2233 (cond ((and (string= val "")
2234 (not (string= prompt "!")) ; was a `! shell-command'
2235 (not (memq last-command
2237 viper-command-argument
2241 ((string= val "") (or default ""))
2247 ;; insertion commands
2249 ;; Called when state changes from Insert Vi command mode.
2250 ;; Repeats the insertion command if Insert state was entered with prefix
2252 (defun viper-repeat-insert-command ()
2253 (let ((i-com (car viper-d-com))
2254 (val (nth 1 viper-d-com))
2255 (char (nth 2 viper-d-com)))
2256 (if (and val (> val 1)) ; first check that val is non-nil
2258 (setq viper-d-com (list i-com (1- val) ?r nil nil nil))
2260 (setq viper-d-com (list i-com val char nil nil nil))
2263 (defun viper-insert (arg)
2264 "Insert before point."
2266 (viper-set-complex-command-for-undo)
2267 (let ((val (viper-p-val arg))
2268 ;;(com (viper-getcom arg))
2270 (viper-set-destructive-command (list 'viper-insert val ?r nil nil nil))
2271 (if (eq viper-intermediate-command 'viper-repeat)
2272 (viper-loop val (viper-yank-last-insertion))
2273 (viper-change-state-to-insert))))
2275 (defun viper-append (arg)
2276 "Append after point."
2278 (viper-set-complex-command-for-undo)
2279 (let ((val (viper-p-val arg))
2280 ;;(com (viper-getcom arg))
2282 (viper-set-destructive-command (list 'viper-append val ?r nil nil nil))
2283 (if (not (eolp)) (forward-char))
2284 (if (eq viper-intermediate-command 'viper-repeat)
2285 (viper-loop val (viper-yank-last-insertion))
2286 (viper-change-state-to-insert))))
2288 (defun viper-Append (arg)
2289 "Append at end of line."
2291 (viper-set-complex-command-for-undo)
2292 (let ((val (viper-p-val arg))
2293 ;;(com (viper-getcom arg))
2295 (viper-set-destructive-command (list 'viper-Append val ?r nil nil nil))
2297 (if (eq viper-intermediate-command 'viper-repeat)
2298 (viper-loop val (viper-yank-last-insertion))
2299 (viper-change-state-to-insert))))
2301 (defun viper-Insert (arg)
2302 "Insert before first non-white."
2304 (viper-set-complex-command-for-undo)
2305 (let ((val (viper-p-val arg))
2306 ;;(com (viper-getcom arg))
2308 (viper-set-destructive-command (list 'viper-Insert val ?r nil nil nil))
2309 (back-to-indentation)
2310 (if (eq viper-intermediate-command 'viper-repeat)
2311 (viper-loop val (viper-yank-last-insertion))
2312 (viper-change-state-to-insert))))
2314 (defun viper-open-line (arg)
2317 (viper-set-complex-command-for-undo)
2318 (let ((val (viper-p-val arg))
2319 ;;(com (viper-getcom arg))
2321 (viper-set-destructive-command (list 'viper-open-line val ?r nil nil nil))
2322 (let ((col (current-indentation)))
2323 (if (eq viper-intermediate-command 'viper-repeat)
2327 (viper-indent-line col)
2328 (viper-yank-last-insertion))
2331 (viper-indent-line col)
2332 (viper-change-state-to-insert)))))
2334 (defun viper-Open-line (arg)
2337 (viper-set-complex-command-for-undo)
2338 (let ((val (viper-p-val arg))
2339 ;;(com (viper-getcom arg))
2341 (viper-set-destructive-command (list 'viper-Open-line val ?r nil nil nil))
2342 (let ((col (current-indentation)))
2343 (if (eq viper-intermediate-command 'viper-repeat)
2347 (viper-indent-line col)
2348 (viper-yank-last-insertion))
2351 (viper-indent-line col)
2352 (viper-change-state-to-insert)))))
2354 (defun viper-open-line-at-point (arg)
2355 "Open line at point."
2357 (viper-set-complex-command-for-undo)
2358 (let ((val (viper-p-val arg))
2359 ;;(com (viper-getcom arg))
2361 (viper-set-destructive-command
2362 (list 'viper-open-line-at-point val ?r nil nil nil))
2363 (if (eq viper-intermediate-command 'viper-repeat)
2366 (viper-yank-last-insertion))
2368 (viper-change-state-to-insert))))
2371 (defun viper-substitute (arg)
2372 "Substitute characters."
2374 (let ((val (viper-p-val arg))
2375 ;;(com (viper-getcom arg))
2379 (if (eq viper-intermediate-command 'viper-repeat)
2380 (viper-change-subr (mark t) (point))
2381 (viper-change (mark t) (point)))
2382 ;; com is set to ?r when we repeat this comand with dot
2383 (viper-set-destructive-command (list 'viper-substitute val ?r nil nil nil))
2386 ;; Command bound to S
2387 (defun viper-substitute-line (arg)
2390 (viper-set-complex-command-for-undo)
2391 (viper-line (cons arg ?C)))
2393 ;; Prepare for replace
2394 (defun viper-start-replace ()
2395 (setq viper-began-as-replace t
2396 viper-sitting-in-replace t
2397 viper-replace-chars-to-delete 0)
2399 'viper-after-change-functions 'viper-replace-mode-spy-after t 'local)
2401 'viper-before-change-functions 'viper-replace-mode-spy-before t 'local)
2402 ;; this will get added repeatedly, but no harm
2403 (add-hook 'after-change-functions 'viper-after-change-sentinel t)
2404 (add-hook 'before-change-functions 'viper-before-change-sentinel t)
2405 (viper-move-marker-locally
2406 'viper-last-posn-in-replace-region (viper-replace-start))
2408 'viper-post-command-hooks 'viper-replace-state-post-command-sentinel
2411 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel t 'local)
2412 ;; guard against a smartie who switched from R-replace to normal replace
2414 'viper-post-command-hooks 'viper-R-state-post-command-sentinel 'local)
2415 (if overwrite-mode (overwrite-mode -1))
2419 (defun viper-replace-mode-spy-before (beg end)
2420 (setq viper-replace-region-chars-deleted (viper-chars-in-region beg end))
2423 ;; Invoked as an after-change-function to calculate how many chars have to be
2424 ;; deleted. This function may be called several times within a single command,
2425 ;; if this command performs several separate buffer changes. Therefore, if
2426 ;; adds up the number of chars inserted and subtracts the number of chars
2428 (defun viper-replace-mode-spy-after (beg end length)
2429 (if (memq viper-intermediate-command
2430 '(dabbrev-expand hippie-expand repeating-insertion-from-ring))
2431 ;; Take special care of text insertion from insertion ring inside
2432 ;; replacement overlays.
2434 (setq viper-replace-chars-to-delete 0)
2435 (viper-move-marker-locally
2436 'viper-last-posn-in-replace-region (point)))
2438 (let* ((real-end (min end (viper-replace-end)))
2439 (column-shift (- (save-excursion (goto-char real-end)
2441 (save-excursion (goto-char beg)
2446 (setq chars-deleted viper-replace-region-chars-deleted))
2447 (setq viper-replace-region-chars-deleted 0)
2448 (setq viper-replace-chars-to-delete
2449 (+ viper-replace-chars-to-delete
2451 ;; if column shift is bigger, due to a TAB insertion, take
2452 ;; column-shift instead of the number of inserted chars
2453 (max (viper-chars-in-region beg real-end)
2454 ;; This test accounts for Chinese/Japanese/... chars,
2455 ;; which occupy 2 columns instead of one. If we use
2456 ;; column-shift here, we may delete two chars instead of
2457 ;; one when the user types one Chinese character.
2458 ;; Deleting two would be OK, if they were European chars,
2459 ;; but it is not OK if they are Chinese chars.
2460 ;; Since it is hard to
2461 ;; figure out which characters are being deleted in any
2462 ;; given region, we decided to treat Eastern and European
2463 ;; characters equally, even though Eastern chars may
2464 ;; occupy more columns.
2465 (if (memq this-command '(self-insert-command
2466 quoted-insert viper-insert-tab))
2469 ;; the number of deleted chars
2472 (viper-move-marker-locally
2473 'viper-last-posn-in-replace-region
2474 (max (if (> end (viper-replace-end)) (viper-replace-end) end)
2475 (or (marker-position viper-last-posn-in-replace-region)
2476 (viper-replace-start))
2482 ;; Delete stuff between viper-last-posn-in-replace-region and the end of
2483 ;; viper-replace-overlay-marker, if viper-last-posn-in-replace-region is within
2484 ;; the overlay and current point is before the end of the overlay.
2485 ;; Don't delete anything if current point is past the end of the overlay.
2486 (defun viper-finish-change ()
2488 'viper-after-change-functions 'viper-replace-mode-spy-after 'local)
2490 'viper-before-change-functions 'viper-replace-mode-spy-before 'local)
2492 'viper-post-command-hooks 'viper-replace-state-post-command-sentinel 'local)
2494 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel 'local)
2495 (viper-restore-cursor-color 'after-replace-mode)
2496 (setq viper-sitting-in-replace nil) ; just in case we'll need to know it
2498 (if (and viper-replace-overlay
2499 (viper-pos-within-region viper-last-posn-in-replace-region
2500 (viper-replace-start)
2501 (viper-replace-end))
2502 (< (point) (viper-replace-end)))
2504 viper-last-posn-in-replace-region (viper-replace-end))))
2506 (if (eq viper-current-state 'replace-state)
2507 (viper-downgrade-to-insert))
2508 ;; replace mode ended => nullify viper-last-posn-in-replace-region
2509 (viper-move-marker-locally 'viper-last-posn-in-replace-region nil)
2510 (viper-hide-replace-overlay)
2511 (viper-refresh-mode-line)
2512 (viper-put-string-on-kill-ring viper-last-replace-region)
2515 ;; Make STRING be the first element of the kill ring.
2516 (defun viper-put-string-on-kill-ring (string)
2517 (setq kill-ring (cons string kill-ring))
2518 (if (> (length kill-ring) kill-ring-max)
2519 (setcdr (nthcdr (1- kill-ring-max) kill-ring) nil))
2520 (setq kill-ring-yank-pointer kill-ring))
2522 (defun viper-finish-R-mode ()
2524 'viper-post-command-hooks 'viper-R-state-post-command-sentinel 'local)
2526 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel 'local)
2527 (viper-downgrade-to-insert))
2529 (defun viper-start-R-mode ()
2530 ;; Leave arg as 1, not t: XEmacs insists that it must be a pos number
2533 'viper-post-command-hooks 'viper-R-state-post-command-sentinel t 'local)
2535 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel t 'local)
2536 ;; guard against a smartie who switched from R-replace to normal replace
2538 'viper-post-command-hooks 'viper-replace-state-post-command-sentinel 'local)
2543 (defun viper-replace-state-exit-cmd ()
2544 "Binding for keys that cause Replace state to switch to Vi or to Insert.
2545 These keys are ESC, RET, and LineFeed"
2547 (if overwrite-mode ; if in replace mode invoked via 'R'
2548 (viper-finish-R-mode)
2549 (viper-finish-change))
2551 (if (eq this-command 'viper-intercept-ESC-key)
2552 (setq com 'viper-exit-insert-state)
2553 (viper-set-unread-command-events last-input-char)
2554 (setq com (key-binding (viper-read-key-sequence nil))))
2556 (condition-case conds
2557 (command-execute com)
2559 (viper-message-conditions conds)))
2561 (viper-hide-replace-overlay))
2564 (defun viper-replace-state-carriage-return ()
2565 "Carriage return in Viper replace state."
2567 ;; If Emacs start supporting overlay maps, as it currently supports
2568 ;; text-property maps, we could do away with viper-replace-minor-mode and
2569 ;; just have keymap attached to replace overlay. Then the "if part" of this
2570 ;; statement can be deleted.
2571 (if (or (< (point) (viper-replace-start))
2572 (> (point) (viper-replace-end)))
2573 (let (viper-replace-minor-mode com)
2574 (viper-set-unread-command-events last-input-char)
2575 (setq com (key-binding (read-key-sequence nil)))
2576 (condition-case conds
2577 (command-execute com)
2579 (viper-message-conditions conds))))
2580 (if (not viper-allow-multiline-replace-regions)
2581 (viper-replace-state-exit-cmd)
2582 (if (viper-same-line (point) (viper-replace-end))
2583 (viper-replace-state-exit-cmd)
2584 ;; delete the rest of line
2585 (delete-region (point) (viper-line-pos 'end))
2588 (if (eobp) (error "Last line in buffer")))
2589 ;; skip to the next line
2591 (back-to-indentation)
2595 ;; This is the function bound to 'R'---unlimited replace.
2596 ;; Similar to Emacs's own overwrite-mode.
2597 (defun viper-overwrite (arg)
2598 "Begin overwrite mode."
2600 (let ((val (viper-p-val arg))
2601 ;;(com (viper-getcom arg))
2603 (viper-set-destructive-command (list 'viper-overwrite val ?r nil nil nil))
2604 (if (eq viper-intermediate-command 'viper-repeat)
2606 ;; Viper saves inserted text in viper-last-insertion
2607 (setq len (length viper-last-insertion))
2608 (delete-char (min len (- (point-max) (point) 1)))
2609 (viper-loop val (viper-yank-last-insertion)))
2610 (setq last-command 'viper-overwrite)
2611 (viper-set-complex-command-for-undo)
2612 (viper-set-replace-overlay (point) (viper-line-pos 'end))
2613 (viper-change-state-to-replace)
2619 (defun viper-line (arg)
2620 (let ((val (car arg))
2622 (viper-move-marker-locally 'viper-com-point (point))
2624 (viper-next-line-carefully (1- val)))
2625 ;; the following ensures that dd, cc, D, yy will do the right thing on the
2626 ;; last line of buffer when this line has no \n.
2627 (viper-add-newline-at-eob-if-necessary)
2628 (viper-execute-com 'viper-line val com))
2629 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
2632 (defun viper-yank-line (arg)
2633 "Yank ARG lines (in Vi's sense)."
2635 (let ((val (viper-p-val arg)))
2636 (viper-line (cons val ?Y))))
2641 (defun viper-region (arg)
2642 "Execute command on a region."
2644 (let ((val (viper-P-val arg))
2645 (com (viper-getcom arg)))
2646 (viper-move-marker-locally 'viper-com-point (point))
2647 (exchange-point-and-mark)
2648 (viper-execute-com 'viper-region val com)))
2650 (defun viper-Region (arg)
2651 "Execute command on a Region."
2653 (let ((val (viper-P-val arg))
2654 (com (viper-getCom arg)))
2655 (viper-move-marker-locally 'viper-com-point (point))
2656 (exchange-point-and-mark)
2657 (viper-execute-com 'viper-Region val com)))
2659 (defun viper-replace-char (arg)
2660 "Replace the following ARG chars by the character read."
2662 (if (and (eolp) (bolp)) (error "No character to replace here"))
2663 (let ((val (viper-p-val arg))
2664 (com (viper-getcom arg)))
2665 (viper-replace-char-subr com val)
2666 (if (and (eolp) (not (bolp))) (forward-char 1))
2667 (setq viper-this-command-keys
2668 (format "%sr" (if (integerp arg) arg "")))
2669 (viper-set-destructive-command
2670 (list 'viper-replace-char val ?r nil viper-d-char nil))
2673 (defun viper-replace-char-subr (com arg)
2674 (let ((inhibit-quit t)
2676 (viper-set-complex-command-for-undo)
2677 (or (eq viper-intermediate-command 'viper-repeat)
2678 (viper-special-read-and-insert-char))
2681 (setq char (if com viper-d-char (viper-char-at-pos 'backward)))
2683 (if com (insert char))
2685 (setq viper-d-char char)
2687 (viper-loop (1- (if (> arg 0) arg (- arg)))
2696 ;; basic cursor movement. j, k, l, h commands.
2698 (defun viper-forward-char (arg)
2699 "Move point right ARG characters (left if ARG negative).
2700 On reaching end of line, stop and signal error."
2702 (viper-leave-region-active)
2703 (let ((val (viper-p-val arg))
2704 (com (viper-getcom arg)))
2705 (if com (viper-move-marker-locally 'viper-com-point (point)))
2706 (if viper-ex-style-motion
2708 ;; the boundary condition check gets weird here because
2709 ;; forward-char may be the parameter of a delete, and 'dl' works
2710 ;; just like 'x' for the last char on a line, so we have to allow
2711 ;; the forward motion before the 'viper-execute-com', but, of
2712 ;; course, 'dl' doesn't work on an empty line, so we have to
2713 ;; catch that condition before 'viper-execute-com'
2714 (if (and (eolp) (bolp)) (error "Viper bell") (forward-char val))
2715 (if com (viper-execute-com 'viper-forward-char val com))
2716 (if (eolp) (progn (backward-char 1) (error "Viper bell"))))
2718 (if com (viper-execute-com 'viper-forward-char val com)))))
2721 (defun viper-backward-char (arg)
2722 "Move point left ARG characters (right if ARG negative).
2723 On reaching beginning of line, stop and signal error."
2725 (viper-leave-region-active)
2726 (let ((val (viper-p-val arg))
2727 (com (viper-getcom arg)))
2728 (if com (viper-move-marker-locally 'viper-com-point (point)))
2729 (if viper-ex-style-motion
2731 (if (bolp) (error "Viper bell") (backward-char val))
2732 (if com (viper-execute-com 'viper-backward-char val com)))
2734 (if com (viper-execute-com 'viper-backward-char val com)))))
2737 ;; Like forward-char, but doesn't move at end of buffer.
2738 ;; Returns distance traveled
2739 ;; (positive or 0, if arg positive; negative if arg negative).
2740 (defun viper-forward-char-carefully (&optional arg)
2741 (setq arg (or arg 1))
2746 (if (< (point) pt) ; arg was negative
2747 (- (viper-chars-in-region pt (point)))
2748 (viper-chars-in-region pt (point)))))
2751 ;; Like backward-char, but doesn't move at beg of buffer.
2752 ;; Returns distance traveled
2753 ;; (negative or 0, if arg positive; positive if arg negative).
2754 (defun viper-backward-char-carefully (&optional arg)
2755 (setq arg (or arg 1))
2760 (if (> (point) pt) ; arg was negative
2761 (viper-chars-in-region pt (point))
2762 (- (viper-chars-in-region pt (point))))))
2764 (defun viper-next-line-carefully (arg)
2766 ;; do not use forward-line! need to keep column
2767 (if (featurep 'emacs)
2768 (with-no-warnings (next-line arg))
2776 ;; Words are formed from alpha's and nonalphas - <sp>,\t\n are separators for
2777 ;; word movement. When executed with a destructive command, \n is usually left
2778 ;; untouched for the last word. Viper uses syntax table to determine what is a
2779 ;; word and what is a separator. However, \n is always a separator. Also, if
2780 ;; viper-syntax-preference is 'vi, then `_' is part of the word.
2783 (defun viper-skip-separators (forward)
2786 (viper-skip-all-separators-forward 'within-line)
2787 (if (looking-at "\n")
2790 (viper-skip-all-separators-forward 'within-line))))
2791 ;; check for eob and white space before it. move off of eob
2792 (if (and (eobp) (save-excursion
2793 (viper-backward-char-carefully)
2794 (viper-looking-at-separator)))
2795 (viper-backward-char-carefully))
2796 (viper-skip-all-separators-backward 'within-line)
2797 (viper-backward-char-carefully)
2798 (if (looking-at "\n")
2799 (viper-skip-all-separators-backward 'within-line)
2800 (or (viper-looking-at-separator) (forward-char)))))
2803 (defun viper-forward-word-kernel (val)
2805 (cond ((viper-looking-at-alpha)
2806 (viper-skip-alpha-forward "_")
2807 (viper-skip-separators t))
2808 ((viper-looking-at-separator)
2809 (viper-skip-separators t))
2810 ((not (viper-looking-at-alphasep))
2811 (viper-skip-nonalphasep-forward)
2812 (viper-skip-separators t)))
2813 (setq val (1- val))))
2815 ;; first skip non-newline separators backward, then skip \n. Then, if TWICE is
2816 ;; non-nil, skip non-\n back again, but don't overshoot the limit LIM.
2817 (defun viper-separator-skipback-special (twice lim)
2818 (let ((prev-char (viper-char-at-pos 'backward))
2819 (saved-point (point)))
2820 ;; skip non-newline separators backward
2821 (while (and (not (viper-memq-char prev-char '(nil \n)))
2823 ;; must be non-newline separator
2824 (if (eq viper-syntax-preference 'strict-vi)
2825 (viper-memq-char prev-char '(?\ ?\t))
2826 (viper-memq-char (char-syntax prev-char) '(?\ ?-))))
2827 (viper-backward-char-carefully)
2828 (setq prev-char (viper-char-at-pos 'backward)))
2830 (if (and (< lim (point)) (eq prev-char ?\n))
2832 ;; If we skipped to the next word and the prefix of this line doesn't
2833 ;; consist of separators preceded by a newline, then don't skip backwards
2835 (goto-char saved-point))
2836 (setq prev-char (viper-char-at-pos 'backward))
2838 ;; skip again, but make sure we don't overshoot the limit
2840 (while (and (not (viper-memq-char prev-char '(nil \n)))
2842 ;; must be non-newline separator
2843 (if (eq viper-syntax-preference 'strict-vi)
2844 (viper-memq-char prev-char '(?\ ?\t))
2845 (viper-memq-char (char-syntax prev-char) '(?\ ?-))))
2846 (viper-backward-char-carefully)
2847 (setq prev-char (viper-char-at-pos 'backward))))
2850 (viper-forward-char-carefully))
2854 (defun viper-forward-word (arg)
2857 (viper-leave-region-active)
2858 (let ((val (viper-p-val arg))
2859 (com (viper-getcom arg)))
2860 (if com (viper-move-marker-locally 'viper-com-point (point)))
2861 (viper-forward-word-kernel val)
2864 (cond ((viper-char-equal com ?c)
2865 (viper-separator-skipback-special 'twice viper-com-point))
2866 ;; Yank words including the whitespace, but not newline
2867 ((viper-char-equal com ?y)
2868 (viper-separator-skipback-special nil viper-com-point))
2869 ((viper-dotable-command-p com)
2870 (viper-separator-skipback-special nil viper-com-point)))
2871 (viper-execute-com 'viper-forward-word val com)))
2875 (defun viper-forward-Word (arg)
2876 "Forward word delimited by white characters."
2878 (viper-leave-region-active)
2879 (let ((val (viper-p-val arg))
2880 (com (viper-getcom arg)))
2881 (if com (viper-move-marker-locally 'viper-com-point (point)))
2883 (viper-skip-nonseparators 'forward)
2884 (viper-skip-separators t))
2886 (cond ((viper-char-equal com ?c)
2887 (viper-separator-skipback-special 'twice viper-com-point))
2888 ;; Yank words including the whitespace, but not newline
2889 ((viper-char-equal com ?y)
2890 (viper-separator-skipback-special nil viper-com-point))
2891 ((viper-dotable-command-p com)
2892 (viper-separator-skipback-special nil viper-com-point)))
2893 (viper-execute-com 'viper-forward-Word val com)))))
2896 ;; this is a bit different from Vi, but Vi's end of word
2897 ;; makes no sense whatsoever
2898 (defun viper-end-of-word-kernel ()
2899 (if (viper-end-of-word-p) (forward-char))
2900 (if (viper-looking-at-separator)
2901 (viper-skip-all-separators-forward))
2903 (cond ((viper-looking-at-alpha) (viper-skip-alpha-forward "_"))
2904 ((not (viper-looking-at-alphasep)) (viper-skip-nonalphasep-forward)))
2905 (viper-backward-char-carefully))
2907 (defun viper-end-of-word-p ()
2910 (cond ((viper-looking-at-alpha)
2912 (not (viper-looking-at-alpha)))
2913 ((not (viper-looking-at-alphasep))
2915 (viper-looking-at-alphasep))))))
2918 (defun viper-end-of-word (arg &optional careful)
2919 "Move point to end of current word."
2921 (viper-leave-region-active)
2922 (let ((val (viper-p-val arg))
2923 (com (viper-getcom arg)))
2924 (if com (viper-move-marker-locally 'viper-com-point (point)))
2925 (viper-loop val (viper-end-of-word-kernel))
2929 (viper-execute-com 'viper-end-of-word val com)))))
2931 (defun viper-end-of-Word (arg)
2932 "Forward to end of word delimited by white character."
2934 (viper-leave-region-active)
2935 (let ((val (viper-p-val arg))
2936 (com (viper-getcom arg)))
2937 (if com (viper-move-marker-locally 'viper-com-point (point)))
2939 (viper-end-of-word-kernel)
2940 (viper-skip-nonseparators 'forward)
2945 (viper-execute-com 'viper-end-of-Word val com)))))
2947 (defun viper-backward-word-kernel (val)
2949 (viper-backward-char-carefully)
2950 (cond ((viper-looking-at-alpha)
2951 (viper-skip-alpha-backward "_"))
2952 ((viper-looking-at-separator)
2954 (viper-skip-separators nil)
2955 (viper-backward-char-carefully)
2956 (cond ((viper-looking-at-alpha)
2957 (viper-skip-alpha-backward "_"))
2958 ((not (viper-looking-at-alphasep))
2959 (viper-skip-nonalphasep-backward))
2960 ((bobp)) ; could still be at separator, but at beg of buffer
2961 (t (forward-char))))
2962 ((not (viper-looking-at-alphasep))
2963 (viper-skip-nonalphasep-backward)))
2964 (setq val (1- val))))
2966 (defun viper-backward-word (arg)
2969 (viper-leave-region-active)
2970 (let ((val (viper-p-val arg))
2971 (com (viper-getcom arg)))
2974 (if (setq i (save-excursion (backward-char) (looking-at "\n")))
2976 (viper-move-marker-locally 'viper-com-point (point))
2977 (if i (forward-char))))
2978 (viper-backward-word-kernel val)
2979 (if com (viper-execute-com 'viper-backward-word val com))))
2981 (defun viper-backward-Word (arg)
2982 "Backward word delimited by white character."
2984 (viper-leave-region-active)
2985 (let ((val (viper-p-val arg))
2986 (com (viper-getcom arg)))
2989 (if (setq i (save-excursion (backward-char) (looking-at "\n")))
2991 (viper-move-marker-locally 'viper-com-point (point))
2992 (if i (forward-char))))
2994 (viper-skip-separators nil) ; nil means backward here
2995 (viper-skip-nonseparators 'backward))
2996 (if com (viper-execute-com 'viper-backward-Word val com))))
3002 (defun viper-beginning-of-line (arg)
3003 "Go to beginning of line."
3005 (viper-leave-region-active)
3006 (let ((val (viper-p-val arg))
3007 (com (viper-getcom arg)))
3008 (if com (viper-move-marker-locally 'viper-com-point (point)))
3009 (beginning-of-line val)
3010 (if com (viper-execute-com 'viper-beginning-of-line val com))))
3012 (defun viper-bol-and-skip-white (arg)
3013 "Beginning of line at first non-white character."
3015 (viper-leave-region-active)
3016 (let ((val (viper-p-val arg))
3017 (com (viper-getcom arg)))
3018 (if com (viper-move-marker-locally 'viper-com-point (point)))
3019 (forward-to-indentation (1- val))
3020 (if com (viper-execute-com 'viper-bol-and-skip-white val com))))
3022 (defun viper-goto-eol (arg)
3023 "Go to end of line."
3025 (viper-leave-region-active)
3026 (let ((val (viper-p-val arg))
3027 (com (viper-getcom arg)))
3028 (if com (viper-move-marker-locally 'viper-com-point (point)))
3030 (if com (viper-execute-com 'viper-goto-eol val com))
3031 (if viper-ex-style-motion
3032 (if (and (eolp) (not (bolp))
3033 ;; a fix for viper-change-to-eol
3034 (not (equal viper-current-state 'insert-state)))
3039 (defun viper-goto-col (arg)
3040 "Go to ARG's column."
3042 (viper-leave-region-active)
3043 (let ((val (viper-p-val arg))
3044 (com (viper-getcom arg))
3047 (viper-chars-in-region
3048 (viper-line-pos 'start) (viper-line-pos 'end)))
3049 (if com (viper-move-marker-locally 'viper-com-point (point)))
3051 (forward-char (1- (min line-len val)))
3052 (while (> (current-column) (1- val))
3054 (if com (viper-execute-com 'viper-goto-col val com))
3057 (if (> val (current-column)) (error "Viper bell")))
3061 (defun viper-next-line (arg)
3064 (viper-leave-region-active)
3065 (let ((val (viper-p-val arg))
3066 (com (viper-getCom arg)))
3067 (if com (viper-move-marker-locally 'viper-com-point (point)))
3068 ;; do not use forward-line! need to keep column
3069 (if (featurep 'emacs)
3070 (with-no-warnings (next-line val))
3072 (if viper-ex-style-motion
3073 (if (and (eolp) (not (bolp))) (backward-char 1)))
3074 (setq this-command 'next-line)
3075 (if com (viper-execute-com 'viper-next-line val com))))
3077 (declare-function widget-type "wid-edit" (widget))
3078 (declare-function widget-button-press "wid-edit" (pos &optional event))
3079 (declare-function viper-set-hooks "viper" ())
3081 (defun viper-next-line-at-bol (arg)
3082 "Next line at beginning of line.
3083 If point is on a widget or a button, simulate clicking on that widget/button."
3085 (let* ((field (get-char-property (point) 'field))
3086 (button (get-char-property (point) 'button))
3087 (doc (get-char-property (point) 'widget-doc))
3088 (widget (or field button doc)))
3090 (if (symbolp widget)
3091 (get widget 'widget-type)
3093 (get (widget-type widget) 'widget-type))))
3094 (widget-button-press (point))
3095 (if (and (fboundp 'button-at) (fboundp 'push-button) (button-at (point)))
3097 ;; not a widget or a button
3098 (viper-leave-region-active)
3101 (if (eobp) (error "Last line in buffer")))
3102 (let ((val (viper-p-val arg))
3103 (com (viper-getCom arg)))
3104 (if com (viper-move-marker-locally 'viper-com-point (point)))
3106 (back-to-indentation)
3107 (if com (viper-execute-com 'viper-next-line-at-bol val com)))))))
3110 (defun viper-previous-line (arg)
3111 "Go to previous line."
3113 (viper-leave-region-active)
3114 (let ((val (viper-p-val arg))
3115 (com (viper-getCom arg)))
3116 (if com (viper-move-marker-locally 'viper-com-point (point)))
3117 ;; do not use forward-line! need to keep column
3118 (if (featurep 'emacs)
3119 (with-no-warnings (previous-line val))
3120 (previous-line val))
3121 (if viper-ex-style-motion
3122 (if (and (eolp) (not (bolp))) (backward-char 1)))
3123 (setq this-command 'previous-line)
3124 (if com (viper-execute-com 'viper-previous-line val com))))
3127 (defun viper-previous-line-at-bol (arg)
3128 "Previous line at beginning of line."
3130 (viper-leave-region-active)
3133 (if (bobp) (error "First line in buffer")))
3134 (let ((val (viper-p-val arg))
3135 (com (viper-getCom arg)))
3136 (if com (viper-move-marker-locally 'viper-com-point (point)))
3137 (forward-line (- val))
3138 (back-to-indentation)
3139 (if com (viper-execute-com 'viper-previous-line val com))))
3141 (defun viper-change-to-eol (arg)
3142 "Change to end of line."
3144 (viper-goto-eol (cons arg ?c)))
3146 (defun viper-kill-line (arg)
3149 (viper-goto-eol (cons arg ?d)))
3151 (defun viper-erase-line (arg)
3154 (viper-beginning-of-line (cons arg ?d)))
3159 (defun viper-goto-line (arg)
3160 "Go to ARG's line. Without ARG go to end of buffer."
3162 (let ((val (viper-P-val arg))
3163 (com (viper-getCom arg)))
3164 (viper-move-marker-locally 'viper-com-point (point))
3165 (viper-deactivate-mark)
3168 (goto-char (point-max))
3169 (goto-char (point-min))
3170 (forward-line (1- val)))
3172 ;; positioning is done twice: before and after command execution
3173 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3174 (back-to-indentation)
3176 (if com (viper-execute-com 'viper-goto-line val com))
3178 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3179 (back-to-indentation)
3182 ;; Find ARG's occurrence of CHAR on the current line.
3183 ;; If FORWARD then search is forward, otherwise backward. OFFSET is used to
3184 ;; adjust point after search.
3185 (defun viper-find-char (arg char forward offset)
3186 (or (char-or-string-p char) (error "Viper bell"))
3187 (let ((arg (if forward arg (- arg)))
3188 (cmd (if (eq viper-intermediate-command 'viper-repeat)
3190 (viper-array-to-string (this-command-keys))))
3191 point region-beg region-end)
3194 (if (> arg 0) ; forward
3196 (setq region-beg (point))
3197 (if viper-allow-multiline-replace-regions
3198 (viper-forward-paragraph 1)
3200 (setq region-end (point)))
3201 (setq region-end (point))
3202 (if viper-allow-multiline-replace-regions
3203 (viper-backward-paragraph 1)
3204 (beginning-of-line))
3205 (setq region-beg (point)))
3206 (if (or (and (< arg 0)
3207 (< (- region-end region-beg)
3208 (if viper-allow-multiline-replace-regions
3212 (< (- region-end region-beg)
3213 (if viper-allow-multiline-replace-regions
3216 (error "Command `%s': At %s of %s"
3218 (if (> arg 0) "end" "beginning")
3219 (if viper-allow-multiline-replace-regions
3220 "paragraph" "line")))
3221 (narrow-to-region region-beg region-end)
3222 ;; if arg > 0, point is forwarded before search.
3223 (if (> arg 0) (goto-char (1+ (point-min)))
3224 (goto-char (point-max)))
3225 (if (let ((case-fold-search nil))
3226 (search-forward (char-to-string char) nil 0 arg))
3227 (setq point (point))
3228 (error "Command `%s': `%c' not found" cmd char))))
3231 (backward-char (if offset 2 1))
3232 (forward-char (if offset 1 0)))))
3234 (defun viper-find-char-forward (arg)
3235 "Find char on the line.
3236 If called interactively read the char to find from the terminal, and if
3237 called from viper-repeat, the char last used is used. This behavior is
3238 controlled by the sign of prefix numeric value."
3240 (let ((val (viper-p-val arg))
3241 (com (viper-getcom arg))
3242 (cmd-representation (nth 5 viper-d-com)))
3244 ;; this means that the function was called interactively
3245 (setq viper-f-char (read-char)
3248 ;; viper-repeat --- set viper-F-char from command-keys
3249 (setq viper-F-char (if (stringp cmd-representation)
3250 (viper-seq-last-elt cmd-representation)
3252 viper-f-char viper-F-char)
3254 (if com (viper-move-marker-locally 'viper-com-point (point)))
3256 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) t nil)
3260 (setq viper-F-char viper-f-char) ; set new viper-F-char
3262 (viper-execute-com 'viper-find-char-forward val com)))))
3264 (defun viper-goto-char-forward (arg)
3265 "Go up to char ARG forward on line."
3267 (let ((val (viper-p-val arg))
3268 (com (viper-getcom arg))
3269 (cmd-representation (nth 5 viper-d-com)))
3271 ;; this means that the function was called interactively
3272 (setq viper-f-char (read-char)
3275 ;; viper-repeat --- set viper-F-char from command-keys
3276 (setq viper-F-char (if (stringp cmd-representation)
3277 (viper-seq-last-elt cmd-representation)
3279 viper-f-char viper-F-char)
3281 (if com (viper-move-marker-locally 'viper-com-point (point)))
3283 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) t t)
3287 (setq viper-F-char viper-f-char) ; set new viper-F-char
3289 (viper-execute-com 'viper-goto-char-forward val com)))))
3291 (defun viper-find-char-backward (arg)
3292 "Find char ARG on line backward."
3294 (let ((val (viper-p-val arg))
3295 (com (viper-getcom arg))
3296 (cmd-representation (nth 5 viper-d-com)))
3298 ;; this means that the function was called interactively
3299 (setq viper-f-char (read-char)
3302 ;; viper-repeat --- set viper-F-char from command-keys
3303 (setq viper-F-char (if (stringp cmd-representation)
3304 (viper-seq-last-elt cmd-representation)
3306 viper-f-char viper-F-char)
3308 (if com (viper-move-marker-locally 'viper-com-point (point)))
3310 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) nil nil)
3314 (setq viper-F-char viper-f-char) ; set new viper-F-char
3315 (viper-execute-com 'viper-find-char-backward val com)))))
3317 (defun viper-goto-char-backward (arg)
3318 "Go up to char ARG backward on line."
3320 (let ((val (viper-p-val arg))
3321 (com (viper-getcom arg))
3322 (cmd-representation (nth 5 viper-d-com)))
3324 ;; this means that the function was called interactively
3325 (setq viper-f-char (read-char)
3328 ;; viper-repeat --- set viper-F-char from command-keys
3329 (setq viper-F-char (if (stringp cmd-representation)
3330 (viper-seq-last-elt cmd-representation)
3332 viper-f-char viper-F-char)
3334 (if com (viper-move-marker-locally 'viper-com-point (point)))
3336 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) nil t)
3340 (setq viper-F-char viper-f-char) ; set new viper-F-char
3341 (viper-execute-com 'viper-goto-char-backward val com)))))
3343 (defun viper-repeat-find (arg)
3344 "Repeat previous find command."
3346 (let ((val (viper-p-val arg))
3347 (com (viper-getcom arg)))
3348 (viper-deactivate-mark)
3349 (if com (viper-move-marker-locally 'viper-com-point (point)))
3350 (viper-find-char val viper-f-char viper-f-forward viper-f-offset)
3353 (if viper-f-forward (forward-char))
3354 (viper-execute-com 'viper-repeat-find val com)))))
3356 (defun viper-repeat-find-opposite (arg)
3357 "Repeat previous find command in the opposite direction."
3359 (let ((val (viper-p-val arg))
3360 (com (viper-getcom arg)))
3361 (viper-deactivate-mark)
3362 (if com (viper-move-marker-locally 'viper-com-point (point)))
3363 (viper-find-char val viper-f-char (not viper-f-forward) viper-f-offset)
3366 (if viper-f-forward (forward-char))
3367 (viper-execute-com 'viper-repeat-find-opposite val com)))))
3370 ;; window scrolling etc.
3372 (defun viper-window-top (arg)
3373 "Go to home window line."
3375 (let ((val (viper-p-val arg))
3376 (com (viper-getCom arg)))
3377 (viper-leave-region-active)
3378 (if com (viper-move-marker-locally 'viper-com-point (point)))
3380 (move-to-window-line (1- val))
3382 ;; positioning is done twice: before and after command execution
3383 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3384 (back-to-indentation)
3386 (if com (viper-execute-com 'viper-window-top val com))
3388 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3389 (back-to-indentation)
3392 (defun viper-window-middle (arg)
3393 "Go to middle window line."
3395 (let ((val (viper-p-val arg))
3396 (com (viper-getCom arg)))
3397 (viper-leave-region-active)
3398 (if com (viper-move-marker-locally 'viper-com-point (point)))
3400 (move-to-window-line (+ (/ (1- (window-height)) 2) (1- val)))
3402 ;; positioning is done twice: before and after command execution
3403 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3404 (back-to-indentation)
3406 (if com (viper-execute-com 'viper-window-middle val com))
3408 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3409 (back-to-indentation)
3412 (defun viper-window-bottom (arg)
3413 "Go to last window line."
3415 (let ((val (viper-p-val arg))
3416 (com (viper-getCom arg)))
3417 (viper-leave-region-active)
3418 (if com (viper-move-marker-locally 'viper-com-point (point)))
3420 (move-to-window-line (- val))
3422 ;; positioning is done twice: before and after command execution
3423 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3424 (back-to-indentation)
3426 (if com (viper-execute-com 'viper-window-bottom val com))
3428 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3429 (back-to-indentation)
3432 (defun viper-line-to-top (arg)
3433 "Put current line on the home line."
3435 (recenter (1- arg)))
3437 (defun viper-line-to-middle (arg)
3438 "Put current line on the middle line."
3440 (recenter (+ (1- arg) (/ (1- (window-height)) 2))))
3442 (defun viper-line-to-bottom (arg)
3443 "Put current line on the last line."
3445 (recenter (- (window-height) (1+ arg))))
3447 ;; If point is within viper-search-scroll-threshold of window top or bottom,
3448 ;; scroll up or down 1/7 of window height, depending on whether we are at the
3449 ;; bottom or at the top of the window. This function is called by viper-search
3450 ;; (which is called from viper-search-forward/backward/next). If the value of
3451 ;; viper-search-scroll-threshold is negative - don't scroll.
3452 (defun viper-adjust-window ()
3453 (let ((win-height (if (featurep 'xemacs)
3454 (window-displayed-height)
3455 (1- (window-height)))) ; adjust for modeline
3457 at-top-p at-bottom-p
3458 min-scroll direction)
3460 (move-to-window-line 0) ; top
3462 (<= (count-lines pt (point))
3463 viper-search-scroll-threshold))
3464 (move-to-window-line -1) ; bottom
3466 (<= (count-lines pt (point)) viper-search-scroll-threshold)))
3467 (cond (at-top-p (setq min-scroll (1- viper-search-scroll-threshold)
3469 (at-bottom-p (setq min-scroll (1+ viper-search-scroll-threshold)
3473 (* (max min-scroll (/ win-height 7)) direction)))
3478 ;; must correct this to only match ( to ) etc. On the other hand
3479 ;; it is good that paren match gets confused, because that way you
3480 ;; catch _all_ imbalances.
3482 (defun viper-paren-match (arg)
3483 "Go to the matching parenthesis."
3485 (viper-leave-region-active)
3486 (let ((com (viper-getcom arg))
3487 (parse-sexp-ignore-comments viper-parse-sexp-ignore-comments)
3490 (if (or (> arg 99) (< arg 1))
3491 (error "Prefix must be between 1 and 99")
3493 (if (> (point-max) 80000)
3494 (* (/ (point-max) 100) arg)
3495 (/ (* (point-max) arg) 100)))
3496 (back-to-indentation))
3497 (let (beg-lim end-lim)
3498 (if (and (eolp) (not (bolp))) (forward-char -1))
3499 (if (not (looking-at "[][(){}]"))
3500 (setq anchor-point (point)))
3503 (setq beg-lim (point))
3505 (setq end-lim (point)))
3506 (cond ((re-search-forward "[][(){}]" end-lim t)
3508 ((re-search-backward "[][(){}]" beg-lim t))
3510 (error "No matching character on line"))))
3511 (cond ((looking-at "[\(\[{]")
3512 (if com (viper-move-marker-locally 'viper-com-point (point)))
3515 (viper-execute-com 'viper-paren-match nil com)
3520 (viper-move-marker-locally 'viper-com-point anchor-point)
3522 (viper-execute-com 'viper-paren-match nil com)
3524 ((looking-at "[])}]")
3526 (if com (viper-move-marker-locally 'viper-com-point (point)))
3528 (if com (viper-execute-com 'viper-paren-match nil com)))
3529 (t (error "Viper bell"))))))
3531 (defun viper-toggle-parse-sexp-ignore-comments ()
3533 (setq viper-parse-sexp-ignore-comments
3534 (not viper-parse-sexp-ignore-comments))
3536 "From now on, `%%' will %signore parentheses inside comment fields"
3537 (if viper-parse-sexp-ignore-comments "" "NOT "))))
3540 ;; sentence, paragraph and heading
3542 (defun viper-forward-sentence (arg)
3545 (or (eq last-command this-command)
3547 (let ((val (viper-p-val arg))
3548 (com (viper-getcom arg)))
3549 (if com (viper-move-marker-locally 'viper-com-point (point)))
3550 (forward-sentence val)
3551 (if com (viper-execute-com 'viper-forward-sentence nil com))))
3553 (defun viper-backward-sentence (arg)
3554 "Backward sentence."
3556 (or (eq last-command this-command)
3558 (let ((val (viper-p-val arg))
3559 (com (viper-getcom arg)))
3560 (if com (viper-move-marker-locally 'viper-com-point (point)))
3561 (backward-sentence val)
3562 (if com (viper-execute-com 'viper-backward-sentence nil com))))
3564 (defun viper-forward-paragraph (arg)
3565 "Forward paragraph."
3567 (or (eq last-command this-command)
3569 (let ((val (viper-p-val arg))
3570 ;; if you want d} operate on whole lines, change viper-getcom to
3571 ;; viper-getCom below
3572 (com (viper-getcom arg)))
3573 (if com (viper-move-marker-locally 'viper-com-point (point)))
3574 (forward-paragraph val)
3578 (viper-execute-com 'viper-forward-paragraph nil com)))))
3580 (defun viper-backward-paragraph (arg)
3581 "Backward paragraph."
3583 (or (eq last-command this-command)
3585 (let ((val (viper-p-val arg))
3586 ;; if you want d{ operate on whole lines, change viper-getcom to
3587 ;; viper-getCom below
3588 (com (viper-getcom arg)))
3589 (if com (viper-move-marker-locally 'viper-com-point (point)))
3590 (backward-paragraph val)
3594 (viper-execute-com 'viper-backward-paragraph nil com)
3595 (backward-char 1)))))
3597 ;; should be mode-specific
3598 (defun viper-prev-heading (arg)
3600 (let ((val (viper-p-val arg))
3601 (com (viper-getCom arg)))
3602 (if com (viper-move-marker-locally 'viper-com-point (point)))
3603 (re-search-backward viper-heading-start nil t val)
3604 (goto-char (match-beginning 0))
3605 (if com (viper-execute-com 'viper-prev-heading nil com))))
3607 (defun viper-heading-end (arg)
3609 (let ((val (viper-p-val arg))
3610 (com (viper-getCom arg)))
3611 (if com (viper-move-marker-locally 'viper-com-point (point)))
3612 (re-search-forward viper-heading-end nil t val)
3613 (goto-char (match-beginning 0))
3614 (if com (viper-execute-com 'viper-heading-end nil com))))
3616 (defun viper-next-heading (arg)
3618 (let ((val (viper-p-val arg))
3619 (com (viper-getCom arg)))
3620 (if com (viper-move-marker-locally 'viper-com-point (point)))
3622 (re-search-forward viper-heading-start nil t val)
3623 (goto-char (match-beginning 0))
3624 (if com (viper-execute-com 'viper-next-heading nil com))))
3629 (defun viper-scroll-screen (arg)
3630 "Scroll to next screen."
3636 (setq arg (1- arg)))
3639 (setq arg (1+ arg))))
3643 (message "End of buffer")
3644 (goto-char (point-max)))
3645 (message "Beginning of buffer")
3646 (goto-char (point-min))))
3649 (defun viper-scroll-screen-back (arg)
3650 "Scroll to previous screen."
3652 (viper-scroll-screen (- arg)))
3654 (defun viper-scroll-down (arg)
3655 "Pull down half screen."
3659 (scroll-down (/ (window-height) 2))
3662 (message "Beginning of buffer")
3663 (goto-char (point-min)))))
3665 (defun viper-scroll-down-one (arg)
3666 "Scroll up one line."
3670 (defun viper-scroll-up (arg)
3671 "Pull up half screen."
3675 (scroll-up (/ (window-height) 2))
3678 (message "End of buffer")
3679 (goto-char (point-max)))))
3681 (defun viper-scroll-up-one (arg)
3682 "Scroll down one line."
3689 (defun viper-if-string (prompt)
3690 (if (memq viper-intermediate-command
3691 '(viper-command-argument viper-digit-argument viper-repeat))
3692 (setq viper-this-command-keys (this-command-keys)))
3693 (let ((s (viper-read-string-with-history
3696 'viper-search-history
3697 (car viper-search-history))))
3698 (if (not (string= s ""))
3699 (setq viper-s-string s))))
3702 (defun viper-toggle-search-style (arg)
3703 "Toggle the value of viper-case-fold-search/viper-re-search.
3704 Without prefix argument, will ask which search style to toggle. With prefix
3705 arg 1,toggles viper-case-fold-search; with arg 2 toggles viper-re-search.
3707 Although this function is bound to \\[viper-toggle-search-style], the most
3708 convenient way to use it is to bind `//' to the macro
3709 `1 M-x viper-toggle-search-style' and `///' to
3710 `2 M-x viper-toggle-search-style'. In this way, hitting `//' quickly will
3711 toggle case-fold-search and hitting `/' three times witth toggle regexp
3712 search. Macros are more convenient in this case because they don't affect
3713 the Emacs binding of `/'."
3716 (cond ((or (eq arg 1)
3718 (y-or-n-p (format "Search style: '%s'. Want '%s'? "
3719 (if viper-case-fold-search
3720 "case-insensitive" "case-sensitive")
3721 (if viper-case-fold-search
3723 "case-insensitive")))))
3724 (setq viper-case-fold-search (null viper-case-fold-search))
3725 (if viper-case-fold-search
3726 (setq msg "Search becomes case-insensitive")
3727 (setq msg "Search becomes case-sensitive")))
3730 (y-or-n-p (format "Search style: '%s'. Want '%s'? "
3732 "regexp-search" "vanilla-search")
3735 "regexp-search")))))
3736 (setq viper-re-search (null viper-re-search))
3738 (setq msg "Search becomes regexp-style")
3739 (setq msg "Search becomes vanilla-style")))
3741 (setq msg "Search style remains unchanged")))
3744 (defun viper-set-searchstyle-toggling-macros (unset &optional major-mode)
3745 "Set the macros for toggling the search style in Viper's vi-state.
3746 The macro that toggles case sensitivity is bound to `//', and the one that
3747 toggles regexp search is bound to `///'.
3748 With a prefix argument, this function unsets the macros.
3749 If MAJOR-MODE is set, set the macros only in that major mode."
3752 (if (and major-mode (symbolp major-mode))
3753 (setq scope major-mode)
3758 ;; toggle case sensitivity in search
3759 (viper-record-kbd-macro
3761 [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]
3763 ;; toggle regexp/vanila search
3764 (viper-record-kbd-macro
3766 [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]
3770 "// and /// now toggle case-sensitivity and regexp search")))
3771 (viper-unrecord-kbd-macro "//" 'vi-state)
3773 (viper-unrecord-kbd-macro "///" 'vi-state)))
3777 (defun viper-set-parsing-style-toggling-macro (unset)
3778 "Set `%%%' to be a macro that toggles whether comment fields should be parsed for matching parentheses.
3779 This is used in conjunction with the `%' command.
3781 With a prefix argument, unsets the macro."
3786 ;; Make %%% toggle parsing comments for matching parentheses
3787 (viper-record-kbd-macro
3789 [(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]
3793 "%%%%%% now toggles whether comments should be parsed for matching parentheses")))
3794 (viper-unrecord-kbd-macro "%%%" 'vi-state))))
3797 (defun viper-set-emacs-state-searchstyle-macros (unset &optional arg-majormode)
3798 "Set the macros for toggling the search style in Viper's emacs-state.
3799 The macro that toggles case sensitivity is bound to `//', and the one that
3800 toggles regexp search is bound to `///'.
3801 With a prefix argument, this function unsets the macros.
3802 If the optional prefix argument is non-nil and specifies a valid major mode,
3803 this sets the macros only in the macros in that major mode. Otherwise,
3804 the macros are set in the current major mode.
3805 \(When unsetting the macros, the second argument has no effect.\)"
3810 ;; toggle case sensitivity in search
3811 (viper-record-kbd-macro
3813 [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]
3814 (or arg-majormode major-mode))
3815 ;; toggle regexp/vanila search
3816 (viper-record-kbd-macro
3818 [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]
3819 (or arg-majormode major-mode))
3822 "// and /// now toggle case-sensitivity and regexp search.")))
3823 (viper-unrecord-kbd-macro "//" 'emacs-state)
3825 (viper-unrecord-kbd-macro "///" 'emacs-state))))
3828 (defun viper-search-forward (arg)
3829 "Search a string forward.
3830 ARG is used to find the ARG's occurrence of the string.
3831 Null string will repeat previous search."
3833 (let ((val (viper-P-val arg))
3834 (com (viper-getcom arg))
3835 (old-str viper-s-string)
3837 (setq viper-s-forward t)
3838 (viper-if-string "/")
3839 ;; this is not used at present, but may be used later
3840 (if (or (not (equal old-str viper-s-string))
3841 (not (markerp viper-local-search-start-marker))
3842 (not (marker-buffer viper-local-search-start-marker)))
3843 (setq viper-local-search-start-marker (point-marker)))
3844 (viper-search viper-s-string t val)
3847 (viper-move-marker-locally 'viper-com-point (mark t))
3848 (viper-execute-com 'viper-search-next val com)))
3851 (defun viper-search-backward (arg)
3852 "Search a string backward.
3853 ARG is used to find the ARG's occurrence of the string.
3854 Null string will repeat previous search."
3856 (let ((val (viper-P-val arg))
3857 (com (viper-getcom arg))
3858 (old-str viper-s-string)
3860 (setq viper-s-forward nil)
3861 (viper-if-string "?")
3862 ;; this is not used at present, but may be used later
3863 (if (or (not (equal old-str viper-s-string))
3864 (not (markerp viper-local-search-start-marker))
3865 (not (marker-buffer viper-local-search-start-marker)))
3866 (setq viper-local-search-start-marker (point-marker)))
3867 (viper-search viper-s-string nil val)
3870 (viper-move-marker-locally 'viper-com-point (mark t))
3871 (viper-execute-com 'viper-search-next val com)))))
3874 ;; Search for COUNT's occurrence of STRING.
3875 ;; Search is forward if FORWARD is non-nil, otherwise backward.
3876 ;; INIT-POINT is the position where search is to start.
3878 ;; (STRING FORW COUNT &optional NO-OFFSET INIT-POINT LIMIT FAIL-IF-NOT-FOUND)
3879 (defun viper-search (string forward arg
3880 &optional no-offset init-point fail-if-not-found)
3881 (if (not (equal string ""))
3882 (let ((val (viper-p-val arg))
3883 (com (viper-getcom arg))
3884 (offset (not no-offset))
3885 (case-fold-search viper-case-fold-search)
3886 (start-point (or init-point (point))))
3887 (viper-deactivate-mark)
3891 (if offset (viper-forward-char-carefully))
3894 (re-search-forward string nil nil val)
3895 (re-search-backward string))
3896 (search-forward string nil nil val)
3897 (search-backward string))
3898 (if (not (equal start-point (point)))
3899 (push-mark start-point t)))
3901 (if (and (not fail-if-not-found) viper-search-wrap-around)
3903 (message "Search wrapped around BOTTOM of buffer")
3904 (goto-char (point-min))
3905 (viper-search string forward (cons 1 com) t start-point 'fail)
3906 ;; don't wait in macros
3907 (or executing-kbd-macro
3908 (memq viper-intermediate-command
3910 viper-digit-argument
3911 viper-command-argument))
3913 ;; delete the wrap-around message
3916 (goto-char start-point)
3917 (error "`%s': %s not found"
3919 (if viper-re-search "Pattern" "String"))
3925 (re-search-backward string nil nil val)
3926 (search-backward string nil nil val))
3927 (if (not (equal start-point (point)))
3928 (push-mark start-point t)))
3930 (if (and (not fail-if-not-found) viper-search-wrap-around)
3932 (message "Search wrapped around TOP of buffer")
3933 (goto-char (point-max))
3934 (viper-search string forward (cons 1 com) t start-point 'fail)
3935 ;; don't wait in macros
3936 (or executing-kbd-macro
3937 (memq viper-intermediate-command
3939 viper-digit-argument
3940 viper-command-argument))
3942 ;; delete the wrap-around message
3945 (goto-char start-point)
3946 (error "`%s': %s not found"
3948 (if viper-re-search "Pattern" "String"))
3950 ;; pull up or down if at top/bottom of window
3951 (viper-adjust-window)
3952 ;; highlight the result of search
3953 ;; don't wait and don't highlight in macros
3954 (or executing-kbd-macro
3955 (memq viper-intermediate-command
3956 '(viper-repeat viper-digit-argument viper-command-argument))
3957 (viper-flash-search-pattern))
3960 (defun viper-search-next (arg)
3961 "Repeat previous search."
3963 (let ((val (viper-p-val arg))
3964 (com (viper-getcom arg))
3966 (if (or (null viper-s-string) (string= viper-s-string ""))
3967 (error viper-NoPrevSearch))
3968 (viper-search viper-s-string viper-s-forward arg)
3971 (viper-move-marker-locally 'viper-com-point (mark t))
3972 (viper-execute-com 'viper-search-next val com)))))
3974 (defun viper-search-Next (arg)
3975 "Repeat previous search in the reverse direction."
3977 (let ((val (viper-p-val arg))
3978 (com (viper-getcom arg))
3980 (if (null viper-s-string) (error viper-NoPrevSearch))
3981 (viper-search viper-s-string (not viper-s-forward) arg)
3984 (viper-move-marker-locally 'viper-com-point (mark t))
3985 (viper-execute-com 'viper-search-Next val com)))))
3988 ;; Search contents of buffer defined by one of Viper's motion commands.
3989 ;; Repeatable via `n' and `N'.
3990 (defun viper-buffer-search-enable (&optional c)
3991 (cond (c (setq viper-buffer-search-char c))
3992 ((null viper-buffer-search-char)
3993 ;; ?g acts as a default value for viper-buffer-search-char
3994 (setq viper-buffer-search-char ?g)))
3995 (define-key viper-vi-basic-map
3996 (cond ((viper-characterp viper-buffer-search-char)
3997 (char-to-string viper-buffer-search-char))
3998 (t (error "viper-buffer-search-char: wrong value type, %S"
3999 viper-buffer-search-char)))
4000 'viper-command-argument)
4001 (aset viper-exec-array viper-buffer-search-char 'viper-exec-buffer-search)
4002 (setq viper-prefix-commands
4003 (cons viper-buffer-search-char viper-prefix-commands)))
4005 ;; This is a Viper wraper for isearch-forward.
4006 (defun viper-isearch-forward (arg)
4007 "Do incremental search forward."
4009 ;; emacs bug workaround
4010 (if (listp arg) (setq arg (car arg)))
4011 (viper-exec-form-in-emacs (list 'isearch-forward arg)))
4013 ;; This is a Viper wraper for isearch-backward."
4014 (defun viper-isearch-backward (arg)
4015 "Do incremental search backward."
4017 ;; emacs bug workaround
4018 (if (listp arg) (setq arg (car arg)))
4019 (viper-exec-form-in-emacs (list 'isearch-backward arg)))
4022 ;; visiting and killing files, buffers
4024 (defun viper-switch-to-buffer ()
4025 "Switch to buffer in the current window."
4027 (let ((other-buffer (other-buffer (current-buffer)))
4030 (funcall viper-read-buffer-function
4031 "Switch to buffer in this window: " other-buffer))
4032 (switch-to-buffer buffer)))
4034 (defun viper-switch-to-buffer-other-window ()
4035 "Switch to buffer in another window."
4037 (let ((other-buffer (other-buffer (current-buffer)))
4040 (funcall viper-read-buffer-function
4041 "Switch to buffer in another window: " other-buffer))
4042 (switch-to-buffer-other-window buffer)))
4044 (defun viper-kill-buffer ()
4047 (let (buffer buffer-name)
4049 (funcall viper-read-buffer-function
4050 (format "Kill buffer \(%s\): "
4051 (buffer-name (current-buffer)))))
4053 (if (null buffer-name)
4055 (get-buffer buffer-name)))
4056 (if (null buffer) (error "`%s': No such buffer" buffer-name))
4057 (if (or (not (buffer-modified-p buffer))
4060 "Buffer `%s' is modified, are you sure you want to kill it? "
4062 (kill-buffer buffer)
4063 (error "Buffer not killed"))))
4069 (defsubst viper-yank (text)
4070 "Yank TEXT silently. This works correctly with Emacs's yank-pop command."
4072 (setq this-command 'yank))
4074 (defun viper-put-back (arg)
4075 "Put back after point/below line."
4077 (let ((val (viper-p-val arg))
4078 (text (if viper-use-register
4079 (cond ((viper-valid-register viper-use-register '(digit))
4081 (- viper-use-register ?1) 'do-not-rotate))
4082 ((viper-valid-register viper-use-register)
4083 (get-register (downcase viper-use-register)))
4084 (t (error viper-InvalidRegister viper-use-register)))
4086 sv-point chars-inserted lines-inserted)
4088 (if viper-use-register
4089 (let ((reg viper-use-register))
4090 (setq viper-use-register nil)
4091 (error viper-EmptyRegister reg))
4092 (error "Viper bell")))
4093 (setq viper-use-register nil)
4094 (if (viper-end-with-a-newline-p text)
4100 (beginning-of-line))
4101 (if (not (eolp)) (viper-forward-char-carefully)))
4102 (set-marker (viper-mark-marker) (point) (current-buffer))
4103 (viper-set-destructive-command
4104 (list 'viper-put-back val nil viper-use-register nil nil))
4105 (setq sv-point (point))
4106 (viper-loop val (viper-yank text))
4107 (setq chars-inserted (abs (- (point) sv-point))
4108 lines-inserted (abs (count-lines (point) sv-point)))
4109 (if (or (> chars-inserted viper-change-notification-threshold)
4110 (> lines-inserted viper-change-notification-threshold))
4111 (unless (viper-is-in-minibuffer)
4112 (message "Inserted %d character(s), %d line(s)"
4113 chars-inserted lines-inserted))))
4114 ;; Vi puts cursor on the last char when the yanked text doesn't contain a
4115 ;; newline; it leaves the cursor at the beginning when the text contains
4117 (if (viper-same-line (point) (mark))
4118 (or (= (point) (mark)) (viper-backward-char-carefully))
4119 (exchange-point-and-mark)
4121 (back-to-indentation)))
4122 (viper-deactivate-mark))
4124 (defun viper-Put-back (arg)
4125 "Put back at point/above line."
4127 (let ((val (viper-p-val arg))
4128 (text (if viper-use-register
4129 (cond ((viper-valid-register viper-use-register '(digit))
4131 (- viper-use-register ?1) 'do-not-rotate))
4132 ((viper-valid-register viper-use-register)
4133 (get-register (downcase viper-use-register)))
4134 (t (error viper-InvalidRegister viper-use-register)))
4136 sv-point chars-inserted lines-inserted)
4138 (if viper-use-register
4139 (let ((reg viper-use-register))
4140 (setq viper-use-register nil)
4141 (error viper-EmptyRegister reg))
4142 (error "Viper bell")))
4143 (setq viper-use-register nil)
4144 (if (viper-end-with-a-newline-p text) (beginning-of-line))
4145 (viper-set-destructive-command
4146 (list 'viper-Put-back val nil viper-use-register nil nil))
4147 (set-marker (viper-mark-marker) (point) (current-buffer))
4148 (setq sv-point (point))
4149 (viper-loop val (viper-yank text))
4150 (setq chars-inserted (abs (- (point) sv-point))
4151 lines-inserted (abs (count-lines (point) sv-point)))
4152 (if (or (> chars-inserted viper-change-notification-threshold)
4153 (> lines-inserted viper-change-notification-threshold))
4154 (unless (viper-is-in-minibuffer)
4155 (message "Inserted %d character(s), %d line(s)"
4156 chars-inserted lines-inserted))))
4157 ;; Vi puts cursor on the last char when the yanked text doesn't contain a
4158 ;; newline; it leaves the cursor at the beginning when the text contains
4160 (if (viper-same-line (point) (mark))
4161 (or (= (point) (mark)) (viper-backward-char-carefully))
4162 (exchange-point-and-mark)
4164 (back-to-indentation)))
4165 (viper-deactivate-mark))
4168 ;; Copy region to kill-ring.
4169 ;; If BEG and END do not belong to the same buffer, copy empty region.
4170 (defun viper-copy-region-as-kill (beg end)
4172 (copy-region-as-kill beg end)
4173 (error (copy-region-as-kill beg beg))))
4176 (defun viper-delete-char (arg)
4177 "Delete next character."
4179 (let ((val (viper-p-val arg))
4181 (viper-set-destructive-command
4182 (list 'viper-delete-char val nil nil nil nil))
4183 (if (and viper-ex-style-editing
4184 (> val (viper-chars-in-region (point) (viper-line-pos 'end))))
4185 (setq val (viper-chars-in-region (point) (viper-line-pos 'end))))
4186 (if (and viper-ex-style-motion (eolp))
4187 (if (bolp) (error "Viper bell") (setq val 0))) ; not bol---simply back 1 ch
4189 (viper-forward-char-carefully val)
4190 (setq end-del-pos (point)))
4191 (if viper-use-register
4193 (cond ((viper-valid-register viper-use-register '((Letter)))
4194 (viper-append-to-register
4195 (downcase viper-use-register) (point) end-del-pos))
4196 ((viper-valid-register viper-use-register)
4198 viper-use-register (point) end-del-pos nil))
4199 (t (error viper-InvalidRegister viper-use-register)))
4200 (setq viper-use-register nil)))
4203 (if viper-ex-style-motion
4204 (if (and (eolp) (not (bolp))) (backward-char 1)))
4207 (defun viper-delete-backward-char (arg)
4208 "Delete previous character. On reaching beginning of line, stop and beep."
4210 (let ((val (viper-p-val arg))
4212 (viper-set-destructive-command
4213 (list 'viper-delete-backward-char val nil nil nil nil))
4215 viper-ex-style-editing
4216 (> val (viper-chars-in-region (viper-line-pos 'start) (point))))
4217 (setq val (viper-chars-in-region (viper-line-pos 'start) (point))))
4219 (viper-backward-char-carefully val)
4220 (setq end-del-pos (point)))
4221 (if viper-use-register
4223 (cond ((viper-valid-register viper-use-register '(Letter))
4224 (viper-append-to-register
4225 (downcase viper-use-register) end-del-pos (point)))
4226 ((viper-valid-register viper-use-register)
4228 viper-use-register end-del-pos (point) nil))
4229 (t (error viper-InvalidRegister viper-use-register)))
4230 (setq viper-use-register nil)))
4231 (if (and (bolp) viper-ex-style-editing)
4233 (delete-backward-char val t)))
4236 (defun viper-del-backward-char-in-insert ()
4237 "Delete 1 char backwards while in insert mode."
4239 (if (and viper-ex-style-editing (bolp))
4241 ;; don't put on kill ring
4242 (delete-backward-char 1 nil)))
4245 (defun viper-del-backward-char-in-replace ()
4246 "Delete one character in replace mode.
4247 If `viper-delete-backwards-in-replace' is t, then DEL key actually deletes
4248 charecters. If it is nil, then the cursor just moves backwards, similarly
4249 to Vi. The variable `viper-ex-style-editing', if t, doesn't let the
4250 cursor move past the beginning of line."
4252 (cond (viper-delete-backwards-in-replace
4254 ;; don't put on kill ring
4255 (delete-backward-char 1 nil))
4256 (viper-ex-style-editing
4261 ;; don't put on kill ring
4262 (delete-backward-char 1 nil))))
4263 (viper-ex-style-editing
4268 (backward-char 1))))
4274 (defun viper-join-lines (arg)
4275 "Join this line to next, if ARG is nil. Otherwise, join ARG lines."
4277 (let ((val (viper-P-val arg)))
4278 (viper-set-destructive-command
4279 (list 'viper-join-lines val nil nil nil nil))
4280 (viper-loop (if (null val) 1 (1- val))
4285 (delete-region (point) (1- (point)))
4287 ;; fixup-whitespace sometimes does not leave space
4288 ;; between objects, so we insert it as in Vi
4289 (or (looking-at " ")
4297 (defun viper-change (beg end)
4298 (if (markerp beg) (setq beg (marker-position beg)))
4299 (if (markerp end) (setq end (marker-position end)))
4300 ;; beg is sometimes (mark t), which may be nil
4301 (or beg (setq beg end))
4303 (viper-set-complex-command-for-undo)
4304 (if viper-use-register
4306 (copy-to-register viper-use-register beg end nil)
4307 (setq viper-use-register nil)))
4308 (viper-set-replace-overlay beg end)
4309 (setq last-command nil) ; separate repl text from prev kills
4311 (if (= (viper-replace-start) (point-max))
4312 (error "End of buffer"))
4314 (setq viper-last-replace-region
4315 (buffer-substring (viper-replace-start)
4316 (viper-replace-end)))
4318 ;; protect against error while inserting "@" and other disasters
4319 ;; (e.g., read-only buff)
4320 (condition-case conds
4321 (if (or viper-allow-multiline-replace-regions
4322 (viper-same-line (viper-replace-start)
4323 (viper-replace-end)))
4325 ;; tabs cause problems in replace, so untabify
4326 (goto-char (viper-replace-end))
4327 (insert-before-markers "@") ; put placeholder after the TAB
4328 (untabify (viper-replace-start) (point))
4329 ;; del @, don't put on kill ring
4330 (delete-backward-char 1)
4332 (viper-set-replace-overlay-glyphs
4333 viper-replace-region-start-delimiter
4334 viper-replace-region-end-delimiter)
4335 ;; this move takes care of the last posn in the overlay, which
4336 ;; has to be shifted because of insert. We can't simply insert
4337 ;; "$" before-markers because then overlay-start will shift the
4338 ;; beginning of the overlay in case we are replacing a single
4339 ;; character. This fixes the bug with `s' and `cl' commands.
4340 (viper-move-replace-overlay (viper-replace-start) (point))
4341 (goto-char (viper-replace-start))
4342 (viper-change-state-to-replace t))
4343 (kill-region (viper-replace-start)
4344 (viper-replace-end))
4345 (viper-hide-replace-overlay)
4346 (viper-change-state-to-insert))
4347 (error ;; make sure that the overlay doesn't stay.
4348 ;; go back to the original point
4349 (goto-char (viper-replace-start))
4350 (viper-hide-replace-overlay)
4351 (viper-message-conditions conds))))
4354 (defun viper-change-subr (beg end)
4355 ;; beg is sometimes (mark t), which may be nil
4356 (or beg (setq beg end))
4357 (if viper-use-register
4359 (copy-to-register viper-use-register beg end nil)
4360 (setq viper-use-register nil)))
4361 (kill-region beg end)
4362 (setq this-command 'viper-change)
4363 (viper-yank-last-insertion))
4365 (defun viper-toggle-case (arg)
4366 "Toggle character case."
4368 (let ((val (viper-p-val arg)) (c))
4369 (viper-set-destructive-command
4370 (list 'viper-toggle-case val nil nil nil nil))
4372 (setq c (following-char))
4374 (if (eq c (upcase c))
4375 (insert-char (downcase c) 1)
4376 (insert-char (upcase c) 1))
4377 (if (eolp) (backward-char 1))
4378 (setq val (1- val)))))
4383 (defun viper-query-replace ()
4385 If a null string is suplied as the string to be replaced,
4386 the query replace mode will toggle between string replace
4387 and regexp replace."
4390 (setq str (viper-read-string-with-history
4391 (if viper-re-query-replace "Query replace regexp: "
4394 'viper-replace1-history
4395 (car viper-replace1-history) ; default
4397 (if (string= str "")
4399 (setq viper-re-query-replace (not viper-re-query-replace))
4400 (message "Query replace mode changed to %s"
4401 (if viper-re-query-replace "regexp replace"
4403 (if viper-re-query-replace
4404 (query-replace-regexp
4406 (viper-read-string-with-history
4407 (format "Query replace regexp `%s' with: " str)
4409 'viper-replace1-history
4410 (car viper-replace1-history) ; default
4414 (viper-read-string-with-history
4415 (format "Query replace `%s' with: " str)
4417 'viper-replace1-history
4418 (car viper-replace1-history) ; default
4424 (defun viper-mark-beginning-of-buffer ()
4425 "Mark beginning of buffer."
4428 (goto-char (point-min))
4429 (exchange-point-and-mark)
4430 (message "Mark set at the beginning of buffer"))
4432 (defun viper-mark-end-of-buffer ()
4433 "Mark end of buffer."
4436 (goto-char (point-max))
4437 (exchange-point-and-mark)
4438 (message "Mark set at the end of buffer"))
4440 (defun viper-mark-point ()
4441 "Set mark at point of buffer."
4443 (let ((char (read-char)))
4444 (cond ((and (<= ?a char) (<= char ?z))
4445 (point-to-register (viper-int-to-char (1+ (- char ?a)))))
4446 ((viper= char ?<) (viper-mark-beginning-of-buffer))
4447 ((viper= char ?>) (viper-mark-end-of-buffer))
4448 ((viper= char ?.) (viper-set-mark-if-necessary))
4449 ((viper= char ?,) (viper-cycle-through-mark-ring))
4450 ((viper= char ?^) (push-mark viper-saved-mark t t))
4451 ((viper= char ?D) (mark-defun))
4452 (t (error "Viper bell"))
4455 ;; Algorithm: If first invocation of this command save mark on ring, goto
4456 ;; mark, M0, and pop the most recent elt from the mark ring into mark,
4457 ;; making it into the new mark, M1.
4458 ;; Push this mark back and set mark to the original point position, p1.
4459 ;; So, if you hit '' or `` then you can return to p1.
4461 ;; If repeated command, pop top elt from the ring into mark and
4462 ;; jump there. This forgets the position, p1, and puts M1 back into mark.
4463 ;; Then we save the current pos, which is M0, jump to M1 and pop M2 from
4464 ;; the ring into mark. Push M2 back on the ring and set mark to M0.
4466 (defun viper-cycle-through-mark-ring ()
4467 "Visit previous locations on the mark ring.
4468 One can use `` and '' to temporarily jump 1 step back."
4469 (let* ((sv-pt (point)))
4470 ;; if repeated `m,' command, pop the previously saved mark.
4471 ;; Prev saved mark is actually prev saved point. It is used if the
4472 ;; user types `` or '' and is discarded
4473 ;; from the mark ring by the next `m,' command.
4474 ;; In any case, go to the previous or previously saved mark.
4475 ;; Then push the current mark (popped off the ring) and set current
4476 ;; point to be the mark. Current pt as mark is discarded by the next
4478 (if (eq last-command 'viper-cycle-through-mark-ring)
4480 ;; save current mark if the first iteration
4481 (setq mark-ring (delete (viper-mark-marker) mark-ring))
4483 (push-mark (mark t) t)) )
4485 (set-mark-command 1)
4486 ;; don't duplicate mark on the ring
4487 (setq mark-ring (delete (viper-mark-marker) mark-ring))
4489 (viper-deactivate-mark)
4490 (setq this-command 'viper-cycle-through-mark-ring)
4494 (defun viper-goto-mark (arg)
4497 (let ((char (read-char))
4498 (com (viper-getcom arg)))
4499 (viper-goto-mark-subr char com nil)))
4501 (defun viper-goto-mark-and-skip-white (arg)
4502 "Go to mark and skip to first non-white character on line."
4504 (let ((char (read-char))
4505 (com (viper-getCom arg)))
4506 (viper-goto-mark-subr char com t)))
4508 (defun viper-goto-mark-subr (char com skip-white)
4511 (error "Empty buffer")
4513 (cond ((viper-valid-register char '(letter))
4514 (let* ((buff (current-buffer))
4515 (reg (viper-int-to-char (1+ (- char ?a))))
4516 (text-marker (get-register reg)))
4517 ;; If marker points to file that had markers set (and those markers
4518 ;; were saved (as e.g., in session.el), then restore those markers
4519 (if (and (consp text-marker)
4520 (eq (car text-marker) 'file-query)
4521 (or (find-buffer-visiting (nth 1 text-marker))
4522 (y-or-n-p (format "Visit file %s again? "
4523 (nth 1 text-marker)))))
4525 (find-file (nth 1 text-marker))
4526 (when (and (<= (nth 2 text-marker) (point-max))
4527 (<= (point-min) (nth 2 text-marker)))
4528 (setq text-marker (copy-marker (nth 2 text-marker)))
4529 (set-register reg text-marker))))
4530 (if com (viper-move-marker-locally 'viper-com-point (point)))
4531 (if (not (viper-valid-marker text-marker))
4532 (error viper-EmptyTextmarker char))
4533 (if (and (viper-same-line (point) viper-last-jump)
4534 (= (point) viper-last-jump-ignore))
4535 (push-mark viper-last-jump t)
4536 (push-mark nil t)) ; no msg
4537 (viper-register-to-point reg)
4538 (setq viper-last-jump (point-marker))
4540 (back-to-indentation)
4541 (setq viper-last-jump-ignore (point))))
4543 (if (equal buff (current-buffer))
4544 (viper-execute-com (if skip-white
4545 'viper-goto-mark-and-skip-white
4548 (switch-to-buffer buff)
4549 (goto-char viper-com-point)
4550 (viper-change-state-to-vi)
4551 (error "Viper bell")))))
4552 ((and (not skip-white) (viper= char ?`))
4553 (if com (viper-move-marker-locally 'viper-com-point (point)))
4554 (if (and (viper-same-line (point) viper-last-jump)
4555 (= (point) viper-last-jump-ignore))
4556 (goto-char viper-last-jump))
4557 (if (null (mark t)) (error "Mark is not set in this buffer"))
4558 (if (= (point) (mark t)) (pop-mark))
4559 (exchange-point-and-mark)
4560 (setq viper-last-jump (point-marker)
4561 viper-last-jump-ignore 0)
4562 (if com (viper-execute-com 'viper-goto-mark nil com)))
4563 ((and skip-white (viper= char ?'))
4564 (if com (viper-move-marker-locally 'viper-com-point (point)))
4565 (if (and (viper-same-line (point) viper-last-jump)
4566 (= (point) viper-last-jump-ignore))
4567 (goto-char viper-last-jump))
4568 (if (= (point) (mark t)) (pop-mark))
4569 (exchange-point-and-mark)
4570 (setq viper-last-jump (point))
4571 (back-to-indentation)
4572 (setq viper-last-jump-ignore (point))
4573 (if com (viper-execute-com 'viper-goto-mark-and-skip-white nil com)))
4574 (t (error viper-InvalidTextmarker char))))
4576 (defun viper-insert-tab ()
4580 (defun viper-exchange-point-and-mark ()
4582 (exchange-point-and-mark)
4583 (back-to-indentation))
4585 ;; Input Mode Indentation
4587 ;; Returns t, if the string before point matches the regexp STR.
4588 (defsubst viper-looking-back (str)
4589 (and (save-excursion (re-search-backward str nil t))
4590 (= (point) (match-end 0))))
4593 (defun viper-forward-indent ()
4594 "Indent forward -- `C-t' in Vi."
4597 (indent-to (+ (current-column) viper-shift-width)))
4599 (defun viper-backward-indent ()
4600 "Backtab, C-d in VI"
4603 (let ((p (point)) (c (current-column)) bol (indent t))
4604 (if (viper-looking-back "[0^]")
4606 (if (eq ?^ (preceding-char))
4607 (setq viper-preserve-indent t))
4608 (delete-backward-char 1)
4614 (if (re-search-backward "[^ \t]" bol 1) (forward-char))
4615 (delete-region (point) p)
4617 (indent-to (- c viper-shift-width)))
4618 (if (or (bolp) (viper-looking-back "[^ \t]"))
4619 (setq viper-cted nil)))))
4622 (defun viper-indent-line (col)
4623 (if viper-auto-indent
4626 (if (and viper-electric-mode
4627 (not (memq major-mode '(fundamental-mode
4629 paragraph-indent-text-mode))))
4630 (indent-according-to-mode)
4634 (defun viper-autoindent ()
4635 "Auto Indentation, Vi-style."
4637 (let ((col (current-indentation)))
4638 (if abbrev-mode (expand-abbrev))
4639 (if viper-preserve-indent
4640 (setq viper-preserve-indent nil)
4641 (setq viper-current-indent col))
4642 ;; don't leave whitespace lines around
4643 (if (memq last-command
4645 viper-open-line viper-Open-line
4646 viper-replace-state-exit-cmd))
4647 (indent-to-left-margin))
4648 ;; use \n instead of newline, or else <Return> will move the insert point
4651 (viper-indent-line viper-current-indent)
4655 ;; Viewing registers
4657 (defun viper-ket-function (arg)
4658 "Function called by \], the ket. View registers and call \]\]."
4660 (let ((reg (read-char)))
4661 (cond ((viper-valid-register reg '(letter Letter))
4662 (view-register (downcase reg)))
4663 ((viper-valid-register reg '(digit))
4664 (let ((text (current-kill (- reg ?1) 'do-not-rotate)))
4665 (with-output-to-temp-buffer " *viper-info*"
4666 (princ (format "Register %c contains the string:\n" reg))
4670 (viper-next-heading arg))
4672 viper-InvalidRegister reg)))))
4674 (defun viper-brac-function (arg)
4675 "Function called by \[, the brac. View textmarkers and call \[\["
4677 (let ((reg (read-char)))
4678 (cond ((viper= ?\[ reg)
4679 (viper-prev-heading arg))
4681 (viper-heading-end arg))
4682 ((viper-valid-register reg '(letter))
4683 (let* ((val (get-register (viper-int-to-char (1+ (- reg ?a)))))
4684 (buf (if (not (markerp val))
4685 (error viper-EmptyTextmarker reg)
4686 (marker-buffer val)))
4687 (pos (marker-position val))
4688 line-no text (s pos) (e pos))
4689 (with-output-to-temp-buffer " *viper-info*"
4694 (setq line-no (1+ (count-lines (point-min) val)))
4697 (if (re-search-backward "[^ \t]" nil t)
4703 (if (re-search-forward "[^ \t]" nil t)
4707 (setq text (buffer-substring s e))
4708 (setq text (format "%s<%c>%s"
4709 (substring text 0 (- pos s))
4710 reg (substring text (- pos s)))))
4713 "Textmarker `%c' is in buffer `%s' at line %d.\n"
4714 reg (buffer-name buf) line-no))
4715 (princ (format "Here is some text around %c:\n\n %s"
4717 (princ (format viper-EmptyTextmarker reg))))
4719 (t (error viper-InvalidTextmarker reg)))))
4723 (defun viper-delete-backward-word (arg)
4724 "Delete previous word."
4729 (delete-region (point) (mark t))
4734 ;; Get viper standard value of SYMBOL. If symbol is customized, get its
4735 ;; standard value. Otherwise, get the value saved in the alist STORAGE. If
4736 ;; STORAGE is nil, use viper-saved-user-settings.
4737 (defun viper-standard-value (symbol &optional storage)
4738 (or (eval (car (get symbol 'customized-value)))
4739 (eval (car (get symbol 'saved-value)))
4740 (nth 1 (assoc symbol (or storage viper-saved-user-settings)))))
4744 (defun viper-set-expert-level (&optional dont-change-unless)
4745 "Sets the expert level for a Viper user.
4746 Can be called interactively to change (temporarily or permanently) the
4747 current expert level.
4749 The optional argument DONT-CHANGE-UNLESS, if not nil, says that
4750 the level should not be changed, unless its current value is
4751 meaningless (i.e., not one of 1,2,3,4,5).
4753 User level determines the setting of Viper variables that are most
4754 sensitive for VI-style look-and-feel."
4758 (if (not (natnump viper-expert-level)) (setq viper-expert-level 0))
4760 (save-window-excursion
4761 (delete-other-windows)
4762 ;; if 0 < viper-expert-level < viper-max-expert-level
4763 ;; & dont-change-unless = t -- use it; else ask
4764 (viper-ask-level dont-change-unless))
4766 (setq viper-always t
4767 viper-ex-style-motion t
4768 viper-ex-style-editing t
4769 viper-want-ctl-h-help nil)
4771 (cond ((eq viper-expert-level 1) ; novice or beginner
4772 (global-set-key ; in emacs-state
4774 (if (viper-window-display-p) 'viper-iconify 'suspend-emacs))
4775 (setq viper-no-multiple-ESC t
4777 viper-vi-style-in-minibuffer t
4778 viper-search-wrap-around t
4779 viper-electric-mode nil
4780 viper-want-emacs-keys-in-vi nil
4781 viper-want-emacs-keys-in-insert nil))
4783 ((and (> viper-expert-level 1) (< viper-expert-level 5))
4784 ;; intermediate to guru
4785 (setq viper-no-multiple-ESC (if (viper-window-display-p)
4787 viper-electric-mode t
4788 viper-want-emacs-keys-in-vi t
4789 viper-want-emacs-keys-in-insert (> viper-expert-level 2))
4791 (if (eq viper-expert-level 4) ; respect user's ex-style motion
4792 ; and viper-no-multiple-ESC
4795 viper-ex-style-editing
4796 (viper-standard-value 'viper-ex-style-editing)
4797 viper-ex-style-motion
4798 (viper-standard-value 'viper-ex-style-motion))
4799 (setq viper-ex-style-motion
4800 (viper-standard-value 'viper-ex-style-motion)
4801 viper-ex-style-editing
4802 (viper-standard-value 'viper-ex-style-editing)
4804 (viper-standard-value 'viper-re-search)
4805 viper-no-multiple-ESC
4806 (viper-standard-value 'viper-no-multiple-ESC)))))
4809 ;; Ideally, if 5 is selected, a buffer should pop up to let the
4810 ;; user toggle the values of variables.
4811 (t (setq-default viper-ex-style-editing
4812 (viper-standard-value 'viper-ex-style-editing)
4813 viper-ex-style-motion
4814 (viper-standard-value 'viper-ex-style-motion))
4815 (setq viper-want-ctl-h-help
4816 (viper-standard-value 'viper-want-ctl-h-help)
4818 (viper-standard-value 'viper-always)
4819 viper-no-multiple-ESC
4820 (viper-standard-value 'viper-no-multiple-ESC)
4821 viper-ex-style-motion
4822 (viper-standard-value 'viper-ex-style-motion)
4823 viper-ex-style-editing
4824 (viper-standard-value 'viper-ex-style-editing)
4826 (viper-standard-value 'viper-re-search)
4828 (viper-standard-value 'viper-electric-mode)
4829 viper-want-emacs-keys-in-vi
4830 (viper-standard-value 'viper-want-emacs-keys-in-vi)
4831 viper-want-emacs-keys-in-insert
4832 (viper-standard-value 'viper-want-emacs-keys-in-insert))))
4834 (viper-set-mode-vars-for viper-current-state)
4835 (if (or viper-always
4836 (and (> viper-expert-level 0) (> 5 viper-expert-level)))
4840 ;; Ask user expert level.
4841 (defun viper-ask-level (dont-change-unless)
4842 (let ((ask-buffer " *viper-ask-level*")
4843 level-changed repeated)
4844 (save-window-excursion
4845 (switch-to-buffer ask-buffer)
4847 (while (or (> viper-expert-level viper-max-expert-level)
4848 (< viper-expert-level 1)
4849 (null dont-change-unless))
4853 (message "Invalid user level")
4856 (setq dont-change-unless t
4859 Please specify your level of familiarity with the venomous VI PERil
4860 \(and the VI Plan for Emacs Rescue).
4861 You can change it at any time by typing `M-x viper-set-expert-level RET'
4863 1 -- BEGINNER: Almost all Emacs features are suppressed.
4864 Feels almost like straight Vi. File name completion and
4865 command history in the minibuffer are thrown in as a bonus.
4866 To use Emacs productively, you must reach level 3 or higher.
4867 2 -- MASTER: C-c now has its standard Emacs meaning in Vi command state,
4868 so most Emacs commands can be used when Viper is in Vi state.
4869 Good progress---you are well on the way to level 3!
4870 3 -- GRAND MASTER: Like 2, but most Emacs commands are available also
4871 in Viper's insert state.
4872 4 -- GURU: Like 3, but user settings are respected for viper-no-multiple-ESC,
4873 viper-ex-style-motion, viper-ex-style-editing, and
4874 viper-re-search variables. Adjust these settings to your taste.
4875 5 -- WIZARD: Like 4, but user settings are also respected for viper-always,
4876 viper-electric-mode, viper-want-ctl-h-help, viper-want-emacs-keys-in-vi,
4877 and viper-want-emacs-keys-in-insert. Adjust these to your taste.
4879 Please, specify your level now: ")
4881 (setq viper-expert-level (- (viper-read-char-exclusive) ?0))
4884 ;; tell the user if level was changed
4888 (format "\n\n\n\n\n\t\tYou have selected user level %d"
4889 viper-expert-level))
4890 (if (y-or-n-p "Do you wish to make this change permanent? ")
4891 ;; save the setting for viper-expert-level
4894 (format "Saving user level %d ..." viper-expert-level)
4895 viper-custom-file-name))
4897 (bury-buffer) ; remove ask-buffer from screen
4907 ;; if ENFORCE-BUFFER is not nil, error if CHAR is a marker in another buffer
4908 (defun viper-register-to-point (char &optional enforce-buffer)
4909 "Like jump-to-register, but switches to another buffer in another window."
4910 (interactive "cViper register to point: ")
4911 (let ((val (get-register char)))
4913 ((and (fboundp 'frame-configuration-p)
4914 (frame-configuration-p val))
4915 (set-frame-configuration val))
4916 ((window-configuration-p val)
4917 (set-window-configuration val))
4918 ((viper-valid-marker val)
4919 (if (and enforce-buffer
4920 (not (equal (current-buffer) (marker-buffer val))))
4921 (error (concat viper-EmptyTextmarker " in this buffer")
4922 (viper-int-to-char (1- (+ char ?a)))))
4923 (pop-to-buffer (marker-buffer val))
4925 ((and (consp val) (eq (car val) 'file))
4926 (find-file (cdr val)))
4928 (error viper-EmptyTextmarker (viper-int-to-char (1- (+ char ?a))))))))
4931 (defun viper-save-kill-buffer ()
4932 "Save then kill current buffer."
4934 (if (< viper-expert-level 2)
4935 (save-buffers-kill-emacs)
4937 (kill-buffer (current-buffer))))
4943 (defun viper-submit-report ()
4944 "Submit bug report on Viper."
4946 (let ((reporter-prompt-for-summary-p t)
4947 (viper-device-type (viper-device-type))
4948 color-display-p frame-parameters
4949 minibuffer-emacs-face minibuffer-vi-face minibuffer-insert-face
4950 varlist salutation window-config)
4952 ;; If mode info is needed, add variable to `let' and then set it below,
4953 ;; like we did with color-display-p.
4954 (setq color-display-p (if (viper-window-display-p)
4955 (viper-color-display-p)
4957 minibuffer-vi-face (if (viper-has-face-support-p)
4958 (viper-get-face viper-minibuffer-vi-face)
4960 minibuffer-insert-face (if (viper-has-face-support-p)
4962 viper-minibuffer-insert-face)
4964 minibuffer-emacs-face (if (viper-has-face-support-p)
4966 viper-minibuffer-emacs-face)
4968 frame-parameters (if (fboundp 'frame-parameters)
4969 (frame-parameters (selected-frame))))
4971 (setq varlist (list 'viper-vi-minibuffer-minor-mode
4972 'viper-insert-minibuffer-minor-mode
4973 'viper-vi-intercept-minor-mode
4974 'viper-vi-local-user-minor-mode
4975 'viper-vi-kbd-minor-mode
4976 'viper-vi-global-user-minor-mode
4977 'viper-vi-state-modifier-minor-mode
4978 'viper-vi-diehard-minor-mode
4979 'viper-vi-basic-minor-mode
4980 'viper-replace-minor-mode
4981 'viper-insert-intercept-minor-mode
4982 'viper-insert-local-user-minor-mode
4983 'viper-insert-kbd-minor-mode
4984 'viper-insert-global-user-minor-mode
4985 'viper-insert-state-modifier-minor-mode
4986 'viper-insert-diehard-minor-mode
4987 'viper-insert-basic-minor-mode
4988 'viper-emacs-intercept-minor-mode
4989 'viper-emacs-local-user-minor-mode
4990 'viper-emacs-kbd-minor-mode
4991 'viper-emacs-global-user-minor-mode
4992 'viper-emacs-state-modifier-minor-mode
4993 'viper-automatic-iso-accents
4994 'viper-special-input-method
4995 'viper-want-emacs-keys-in-insert
4996 'viper-want-emacs-keys-in-vi
4997 'viper-keep-point-on-undo
4998 'viper-no-multiple-ESC
4999 'viper-electric-mode
5001 'viper-want-ctl-h-help
5002 'viper-ex-style-editing
5003 'viper-delete-backwards-in-replace
5004 'viper-vi-style-in-minibuffer
5005 'viper-vi-state-hook
5006 'viper-insert-state-hook
5007 'viper-replace-state-hook
5008 'viper-emacs-state-hook
5009 'ex-cycle-other-window
5010 'ex-cycle-through-non-files
5017 'minibuffer-insert-face
5018 'minibuffer-emacs-face
5021 Congratulations! You may have unearthed a bug in Viper!
5022 Please mail a concise, accurate summary of the problem to the address above.
5024 -------------------------------------------------------------------")
5025 (setq window-config (current-window-configuration))
5026 (with-output-to-temp-buffer " *viper-info*"
5027 (switch-to-buffer " *viper-info*")
5028 (delete-other-windows)
5030 PLEASE FOLLOW THESE PROCEDURES
5031 ------------------------------
5033 Before reporting a bug, please verify that it is related to Viper, and is
5034 not cause by other packages you are using.
5036 Don't report compilation warnings, unless you are certain that there is a
5037 problem. These warnings are normal and unavoidable.
5039 Please note that users should not modify variables and keymaps other than
5040 those advertised in the manual. Such `customization' is likely to crash
5041 Viper, as it would any other improperly customized Emacs package.
5043 If you are reporting an error message received while executing one of the
5044 Viper commands, type:
5046 M-x set-variable <Return> debug-on-error <Return> t <Return>
5048 Then reproduce the error. The above command will cause Emacs to produce a
5049 back trace of the execution that leads to the error. Please include this
5050 trace in your bug report.
5052 If you believe that one of Viper's commands goes into an infinite loop
5053 \(e.g., Emacs freezes\), type:
5055 M-x set-variable <Return> debug-on-quit <Return> t <Return>
5057 Then reproduce the problem. Wait for a few seconds, then type C-g to abort
5058 the current command. Include the resulting back trace in the bug report.
5060 Mail anyway (y or n)? ")
5061 (if (y-or-n-p "Mail anyway? ")
5063 (set-window-configuration window-config)
5064 (error "Bug report aborted")))
5067 (set-window-configuration window-config)
5069 (reporter-submit-bug-report "kifer@cs.stonybrook.edu"
5072 nil 'delete-other-windows
5079 ;; arch-tag: 739a6450-5fda-44d0-88b0-325053d888c2
5080 ;;; viper-cmd.el ends here