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85698d63 | 1 | ;;; register.el --- register commands for Emacs -*- lexical-binding: t; -*- |
c88ab9ce | 2 | |
ab422c4d PE |
3 | ;; Copyright (C) 1985, 1993-1994, 2001-2013 Free Software Foundation, |
4 | ;; Inc. | |
9750e079 | 5 | |
4821e2af | 6 | ;; Maintainer: FSF |
d7b4d18f | 7 | ;; Keywords: internal |
bd78fa1d | 8 | ;; Package: emacs |
4821e2af | 9 | |
efeae993 RS |
10 | ;; This file is part of GNU Emacs. |
11 | ||
eb3fa2cf | 12 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
efeae993 | 13 | ;; it under the terms of the GNU General Public License as published by |
eb3fa2cf GM |
14 | ;; the Free Software Foundation, either version 3 of the License, or |
15 | ;; (at your option) any later version. | |
efeae993 RS |
16 | |
17 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
18 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | ;; GNU General Public License for more details. | |
21 | ||
22 | ;; You should have received a copy of the GNU General Public License | |
eb3fa2cf | 23 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
efeae993 | 24 | |
d9ecc911 ER |
25 | ;;; Commentary: |
26 | ||
27 | ;; This package of functions emulates and somewhat extends the venerable | |
28 | ;; TECO's `register' feature, which permits you to save various useful | |
29 | ;; pieces of buffer state to named variables. The entry points are | |
30 | ;; documented in the Emacs user's manual. | |
31 | ||
f58e0fd5 | 32 | (eval-when-compile (require 'cl-lib)) |
6302e0d3 | 33 | |
4821e2af | 34 | ;;; Code: |
efeae993 | 35 | |
f58e0fd5 | 36 | (cl-defstruct |
6302e0d3 LL |
37 | (registerv (:constructor nil) |
38 | (:constructor registerv--make (&optional data print-func | |
39 | jump-func insert-func)) | |
40 | (:copier nil) | |
41 | (:type vector) | |
42 | :named) | |
43 | (data nil :read-only t) | |
44 | (print-func nil :read-only t) | |
45 | (jump-func nil :read-only t) | |
46 | (insert-func nil :read-only t)) | |
47 | ||
f58e0fd5 | 48 | (cl-defun registerv-make (data &key print-func jump-func insert-func) |
6302e0d3 LL |
49 | "Create a register value object. |
50 | ||
51 | DATA can be any value. | |
52 | PRINT-FUNC if provided controls how `list-registers' and | |
53 | `view-register' print the register. It should be a function | |
9173deec | 54 | receiving one argument DATA and print text that completes |
6302e0d3 LL |
55 | this sentence: |
56 | Register X contains [TEXT PRINTED BY PRINT-FUNC] | |
57 | JUMP-FUNC if provided, controls how `jump-to-register' jumps to the register. | |
58 | INSERT-FUNC if provided, controls how `insert-register' insert the register. | |
59 | They both receive DATA as argument." | |
60 | (registerv--make data print-func jump-func insert-func)) | |
61 | ||
efeae993 RS |
62 | (defvar register-alist nil |
63 | "Alist of elements (NAME . CONTENTS), one for each Emacs register. | |
6302e0d3 LL |
64 | NAME is a character (a number). CONTENTS is a string, number, marker, list |
65 | or a struct returned by `registerv-make'. | |
22073dda | 66 | A list of strings represents a rectangle. |
5858bcc4 CY |
67 | A list of the form (file . FILE-NAME) represents the file named FILE-NAME. |
68 | A list of the form (file-query FILE-NAME POSITION) represents | |
69 | position POSITION in the file named FILE-NAME, but query before | |
70 | visiting it. | |
070c2506 KH |
71 | A list of the form (WINDOW-CONFIGURATION POSITION) |
72 | represents a saved window configuration plus a saved value of point. | |
73 | A list of the form (FRAME-CONFIGURATION POSITION) | |
77187e6f | 74 | represents a saved frame configuration plus a saved value of point.") |
efeae993 | 75 | |
0979429b J |
76 | (defgroup register nil |
77 | "Register commands." | |
78 | :group 'convenience | |
bfabf70a | 79 | :version "24.3") |
0979429b | 80 | |
bfabf70a AS |
81 | (defcustom register-separator nil |
82 | "Register containing the text to put between collected texts, or nil if none. | |
0979429b J |
83 | |
84 | When collecting text with | |
85 | `append-to-register' (resp. `prepend-to-register') contents of | |
86 | this register is added to the beginning (resp. end) of the marked | |
87 | text." | |
88 | :group 'register | |
89 | :type '(choice (const :tag "None" nil) | |
90 | (character :tag "Use register" :value ?+))) | |
91 | ||
85698d63 LL |
92 | (defcustom register-preview-delay 1 |
93 | "If non-nil delay in seconds to pop up the preview window." | |
94 | :type '(choice number (const :tag "Indefinitely" nil)) | |
95 | :group 'register) | |
96 | ||
1a86cc81 JB |
97 | (defun get-register (register) |
98 | "Return contents of Emacs register named REGISTER, or nil if none." | |
99 | (cdr (assq register register-alist))) | |
efeae993 | 100 | |
1b8cac5d RS |
101 | (defun set-register (register value) |
102 | "Set contents of Emacs register named REGISTER to VALUE. Returns VALUE. | |
1a86cc81 | 103 | See the documentation of the variable `register-alist' for possible VALUEs." |
1b8cac5d | 104 | (let ((aelt (assq register register-alist))) |
efeae993 RS |
105 | (if aelt |
106 | (setcdr aelt value) | |
ddbb3cc7 | 107 | (push (cons register value) register-alist)) |
efeae993 RS |
108 | value)) |
109 | ||
85698d63 LL |
110 | (defun register-describe-oneline (c) |
111 | "One-line description of register C." | |
112 | (let ((d (replace-regexp-in-string | |
113 | "\n[ \t]*" " " | |
114 | (with-output-to-string (describe-register-1 c))))) | |
115 | (if (string-match "Register.+? contains \\(?:an? \\|the \\)?" d) | |
116 | (substring d (match-end 0)) | |
117 | d))) | |
118 | ||
119 | (defvar register-preview-functions nil) | |
120 | ||
121 | (defun register-preview (buffer &optional show-empty) | |
122 | "Pop up a window to show register preview in BUFFER. | |
123 | If SHOW-EMPTY is non-nil show the window even if no registers." | |
124 | (when (or show-empty (consp register-alist)) | |
125 | (let ((split-height-threshold 0)) | |
85698d63 LL |
126 | (with-temp-buffer-window |
127 | buffer | |
128 | (cons 'display-buffer-below-selected | |
129 | '((window-height . fit-window-to-buffer))) | |
130 | nil | |
131 | (with-current-buffer standard-output | |
132 | (setq cursor-in-non-selected-windows nil) | |
133 | (mapc | |
134 | (lambda (r) | |
135 | (insert (or (run-hook-with-args-until-success | |
136 | 'register-preview-functions r) | |
137 | (format "%s %s\n" | |
138 | (concat (single-key-description (car r)) ":") | |
139 | (register-describe-oneline (car r)))))) | |
140 | register-alist)))))) | |
141 | ||
142 | (defun register-read-with-preview (prompt) | |
143 | "Read an event with register preview using PROMPT. | |
144 | Pop up a register preview window if the input is a help char but | |
145 | is not a register. Alternatively if `register-preview-delay' is a | |
146 | number the preview window is popped up after some delay." | |
147 | (let* ((buffer "*Register Preview*") | |
148 | (timer (when (numberp register-preview-delay) | |
149 | (run-with-timer register-preview-delay nil | |
150 | (lambda () | |
151 | (unless (get-buffer-window buffer) | |
152 | (register-preview buffer)))))) | |
153 | (help-chars (cl-loop for c in (cons help-char help-event-list) | |
154 | when (not (get-register c)) | |
155 | collect c))) | |
156 | (unwind-protect | |
157 | (progn | |
158 | (while (memq (read-event (propertize prompt 'face 'minibuffer-prompt)) | |
159 | help-chars) | |
160 | (unless (get-buffer-window buffer) | |
161 | (register-preview buffer 'show-empty))) | |
162 | last-input-event) | |
163 | (and (timerp timer) (cancel-timer timer)) | |
164 | (let ((w (get-buffer-window buffer))) | |
165 | (and (window-live-p w) (delete-window w))) | |
166 | (and (get-buffer buffer) (kill-buffer buffer))))) | |
167 | ||
1b8cac5d | 168 | (defun point-to-register (register &optional arg) |
b42e6156 | 169 | "Store current location of point in register REGISTER. |
0cc89026 | 170 | With prefix argument, store current frame configuration. |
b42e6156 | 171 | Use \\[jump-to-register] to go to that location or restore that configuration. |
efeae993 | 172 | Argument is a character, naming the register." |
85698d63 LL |
173 | (interactive (list (register-read-with-preview "Point to register: ") |
174 | current-prefix-arg)) | |
ddbb3cc7 SM |
175 | ;; Turn the marker into a file-ref if the buffer is killed. |
176 | (add-hook 'kill-buffer-hook 'register-swap-out nil t) | |
1b8cac5d | 177 | (set-register register |
070c2506 KH |
178 | (if arg (list (current-frame-configuration) (point-marker)) |
179 | (point-marker)))) | |
efeae993 | 180 | |
06b60517 | 181 | (defun window-configuration-to-register (register &optional _arg) |
83b5d757 RS |
182 | "Store the window configuration of the selected frame in register REGISTER. |
183 | Use \\[jump-to-register] to restore the configuration. | |
184 | Argument is a character, naming the register." | |
85698d63 LL |
185 | (interactive (list (register-read-with-preview |
186 | "Window configuration to register: ") | |
187 | current-prefix-arg)) | |
b4a91f43 KH |
188 | ;; current-window-configuration does not include the value |
189 | ;; of point in the current buffer, so record that separately. | |
070c2506 | 190 | (set-register register (list (current-window-configuration) (point-marker)))) |
83b5d757 | 191 | |
06b60517 | 192 | (defun frame-configuration-to-register (register &optional _arg) |
83b5d757 RS |
193 | "Store the window configuration of all frames in register REGISTER. |
194 | Use \\[jump-to-register] to restore the configuration. | |
195 | Argument is a character, naming the register." | |
85698d63 LL |
196 | (interactive (list (register-read-with-preview |
197 | "Frame configuration to register: ") | |
198 | current-prefix-arg)) | |
b4a91f43 KH |
199 | ;; current-frame-configuration does not include the value |
200 | ;; of point in the current buffer, so record that separately. | |
070c2506 | 201 | (set-register register (list (current-frame-configuration) (point-marker)))) |
83b5d757 | 202 | |
31e1d920 | 203 | (defalias 'register-to-point 'jump-to-register) |
1b8cac5d | 204 | (defun jump-to-register (register &optional delete) |
efeae993 | 205 | "Move point to location stored in a register. |
22073dda | 206 | If the register contains a file name, find that file. |
1a86cc81 | 207 | \(To put a file name in a register, you must use `set-register'.) |
2805a651 JB |
208 | If the register contains a window configuration (one frame) or a frameset |
209 | \(all frames), restore that frame or all frames accordingly. | |
e7683fff | 210 | First argument is a character, naming the register. |
1542ad37 | 211 | Optional second arg non-nil (interactively, prefix argument) says to |
2805a651 | 212 | delete any existing frames that the frameset doesn't mention. |
a21d94f9 | 213 | \(Otherwise, these frames are iconified.)" |
85698d63 LL |
214 | (interactive (list (register-read-with-preview "Jump to register: ") |
215 | current-prefix-arg)) | |
1b8cac5d | 216 | (let ((val (get-register register))) |
376a7584 | 217 | (cond |
6302e0d3 | 218 | ((registerv-p val) |
f58e0fd5 | 219 | (cl-assert (registerv-jump-func val) nil |
6302e0d3 LL |
220 | "Don't know how to jump to register %s" |
221 | (single-key-description register)) | |
222 | (funcall (registerv-jump-func val) (registerv-data val))) | |
b4a91f43 KH |
223 | ((and (consp val) (frame-configuration-p (car val))) |
224 | (set-frame-configuration (car val) (not delete)) | |
225 | (goto-char (cadr val))) | |
226 | ((and (consp val) (window-configuration-p (car val))) | |
227 | (set-window-configuration (car val)) | |
228 | (goto-char (cadr val))) | |
376a7584 | 229 | ((markerp val) |
8c4ca60c KH |
230 | (or (marker-buffer val) |
231 | (error "That register's buffer no longer exists")) | |
376a7584 JB |
232 | (switch-to-buffer (marker-buffer val)) |
233 | (goto-char val)) | |
22073dda RS |
234 | ((and (consp val) (eq (car val) 'file)) |
235 | (find-file (cdr val))) | |
28cbd14d RS |
236 | ((and (consp val) (eq (car val) 'file-query)) |
237 | (or (find-buffer-visiting (nth 1 val)) | |
238 | (y-or-n-p (format "Visit file %s again? " (nth 1 val))) | |
239 | (error "Register access aborted")) | |
240 | (find-file (nth 1 val)) | |
241 | (goto-char (nth 2 val))) | |
376a7584 JB |
242 | (t |
243 | (error "Register doesn't contain a buffer position or configuration"))))) | |
efeae993 | 244 | |
28cbd14d | 245 | (defun register-swap-out () |
ddbb3cc7 | 246 | "Turn markers into file-query references when a buffer is killed." |
28cbd14d | 247 | (and buffer-file-name |
ddbb3cc7 SM |
248 | (dolist (elem register-alist) |
249 | (and (markerp (cdr elem)) | |
250 | (eq (marker-buffer (cdr elem)) (current-buffer)) | |
251 | (setcdr elem | |
252 | (list 'file-query | |
253 | buffer-file-name | |
254 | (marker-position (cdr elem)))))))) | |
28cbd14d | 255 | |
0e07a458 | 256 | (defun number-to-register (number register) |
070c2506 KH |
257 | "Store a number in a register. |
258 | Two args, NUMBER and REGISTER (a character, naming the register). | |
4d2caa07 KH |
259 | If NUMBER is nil, a decimal number is read from the buffer starting |
260 | at point, and point moves to the end of that number. | |
070c2506 | 261 | Interactively, NUMBER is the prefix arg (none means nil)." |
85698d63 LL |
262 | (interactive (list current-prefix-arg |
263 | (register-read-with-preview "Number to register: "))) | |
4f23d31c | 264 | (set-register register |
0e07a458 KH |
265 | (if number |
266 | (prefix-numeric-value number) | |
4d2caa07 KH |
267 | (if (looking-at "\\s-*-?[0-9]+") |
268 | (progn | |
269 | (goto-char (match-end 0)) | |
fe22eed0 | 270 | (string-to-number (match-string 0))) |
070c2506 KH |
271 | 0)))) |
272 | ||
0979429b J |
273 | (defun increment-register (prefix register) |
274 | "Augment contents of REGISTER. | |
275 | Interactively, PREFIX is in raw form. | |
276 | ||
277 | If REGISTER contains a number, add `prefix-numeric-value' of | |
278 | PREFIX to it. | |
279 | ||
280 | If REGISTER is empty or if it contains text, call | |
281 | `append-to-register' with `delete-flag' set to PREFIX." | |
282 | (interactive "P\ncIncrement register: ") | |
283 | (let ((register-val (get-register register))) | |
284 | (cond | |
285 | ((numberp register-val) | |
286 | (let ((number (prefix-numeric-value prefix))) | |
287 | (set-register register (+ number register-val)))) | |
288 | ((or (not register-val) (stringp register-val)) | |
289 | (append-to-register register (region-beginning) (region-end) prefix)) | |
290 | (t (error "Register does not contain a number or text"))))) | |
efeae993 | 291 | |
1b8cac5d | 292 | (defun view-register (register) |
efeae993 | 293 | "Display what is contained in register named REGISTER. |
1b8cac5d | 294 | The Lisp value REGISTER is a character." |
85698d63 | 295 | (interactive (list (register-read-with-preview "View register: "))) |
1b8cac5d | 296 | (let ((val (get-register register))) |
efeae993 | 297 | (if (null val) |
1b8cac5d | 298 | (message "Register %s is empty" (single-key-description register)) |
efeae993 | 299 | (with-output-to-temp-buffer "*Output*" |
92840a31 RS |
300 | (describe-register-1 register t))))) |
301 | ||
302 | (defun list-registers () | |
303 | "Display a list of nonempty registers saying briefly what they contain." | |
304 | (interactive) | |
305 | (let ((list (copy-sequence register-alist))) | |
306 | (setq list (sort list (lambda (a b) (< (car a) (car b))))) | |
307 | (with-output-to-temp-buffer "*Output*" | |
308 | (dolist (elt list) | |
309 | (when (get-register (car elt)) | |
310 | (describe-register-1 (car elt)) | |
311 | (terpri)))))) | |
312 | ||
313 | (defun describe-register-1 (register &optional verbose) | |
314 | (princ "Register ") | |
315 | (princ (single-key-description register)) | |
316 | (princ " contains ") | |
6ed21409 RS |
317 | (let ((val (get-register register))) |
318 | (cond | |
6302e0d3 LL |
319 | ((registerv-p val) |
320 | (if (registerv-print-func val) | |
321 | (funcall (registerv-print-func val) (registerv-data val)) | |
322 | (princ "[UNPRINTABLE CONTENTS]."))) | |
323 | ||
6ed21409 RS |
324 | ((numberp val) |
325 | (princ val)) | |
326 | ||
327 | ((markerp val) | |
328 | (let ((buf (marker-buffer val))) | |
329 | (if (null buf) | |
330 | (princ "a marker in no buffer") | |
331 | (princ "a buffer position:\n buffer ") | |
332 | (princ (buffer-name buf)) | |
333 | (princ ", position ") | |
334 | (princ (marker-position val))))) | |
335 | ||
336 | ((and (consp val) (window-configuration-p (car val))) | |
337 | (princ "a window configuration.")) | |
338 | ||
339 | ((and (consp val) (frame-configuration-p (car val))) | |
340 | (princ "a frame configuration.")) | |
341 | ||
342 | ((and (consp val) (eq (car val) 'file)) | |
343 | (princ "the file ") | |
344 | (prin1 (cdr val)) | |
345 | (princ ".")) | |
346 | ||
347 | ((and (consp val) (eq (car val) 'file-query)) | |
348 | (princ "a file-query reference:\n file ") | |
349 | (prin1 (car (cdr val))) | |
350 | (princ ",\n position ") | |
351 | (princ (car (cdr (cdr val)))) | |
352 | (princ ".")) | |
353 | ||
354 | ((consp val) | |
355 | (if verbose | |
356 | (progn | |
357 | (princ "the rectangle:\n") | |
358 | (while val | |
359 | (princ " ") | |
360 | (princ (car val)) | |
361 | (terpri) | |
362 | (setq val (cdr val)))) | |
363 | (princ "a rectangle starting with ") | |
364 | (princ (car val)))) | |
365 | ||
366 | ((stringp val) | |
9c7cc04b RS |
367 | (if (eq yank-excluded-properties t) |
368 | (set-text-properties 0 (length val) nil val) | |
369 | (remove-list-of-text-properties 0 (length val) | |
370 | yank-excluded-properties val)) | |
6ed21409 RS |
371 | (if verbose |
372 | (progn | |
373 | (princ "the text:\n") | |
374 | (princ val)) | |
f1180544 | 375 | (cond |
13d6f302 RS |
376 | ;; Extract first N characters starting with first non-whitespace. |
377 | ((string-match (format "[^ \t\n].\\{,%d\\}" | |
378 | ;; Deduct 6 for the spaces inserted below. | |
379 | (min 20 (max 0 (- (window-width) 6)))) | |
380 | val) | |
381 | (princ "text starting with\n ") | |
382 | (princ (match-string 0 val))) | |
383 | ((string-match "^[ \t\n]+$" val) | |
384 | (princ "whitespace")) | |
385 | (t | |
386 | (princ "the empty string"))))) | |
6ed21409 RS |
387 | (t |
388 | (princ "Garbage:\n") | |
389 | (if verbose (prin1 val)))))) | |
efeae993 | 390 | |
1b8cac5d RS |
391 | (defun insert-register (register &optional arg) |
392 | "Insert contents of register REGISTER. (REGISTER is a character.) | |
efeae993 RS |
393 | Normally puts point before and mark after the inserted text. |
394 | If optional second arg is non-nil, puts mark before and point after. | |
395 | Interactively, second arg is non-nil if prefix arg is supplied." | |
85698d63 LL |
396 | (interactive (progn |
397 | (barf-if-buffer-read-only) | |
5ea75d23 BG |
398 | (list (register-read-with-preview "Insert register: ") |
399 | current-prefix-arg))) | |
efeae993 | 400 | (push-mark) |
1b8cac5d | 401 | (let ((val (get-register register))) |
cbd4993c | 402 | (cond |
6302e0d3 | 403 | ((registerv-p val) |
f58e0fd5 | 404 | (cl-assert (registerv-insert-func val) nil |
6302e0d3 LL |
405 | "Don't know how to insert register %s" |
406 | (single-key-description register)) | |
407 | (funcall (registerv-insert-func val) (registerv-data val))) | |
2d43b8c9 LL |
408 | ((consp val) |
409 | (insert-rectangle val)) | |
cbd4993c | 410 | ((stringp val) |
e7c765c3 | 411 | (insert-for-yank val)) |
070c2506 | 412 | ((numberp val) |
cbd4993c KH |
413 | (princ val (current-buffer))) |
414 | ((and (markerp val) (marker-position val)) | |
415 | (princ (marker-position val) (current-buffer))) | |
416 | (t | |
417 | (error "Register does not contain text")))) | |
efeae993 RS |
418 | (if (not arg) (exchange-point-and-mark))) |
419 | ||
1b8cac5d | 420 | (defun copy-to-register (register start end &optional delete-flag) |
1a86cc81 JB |
421 | "Copy region into register REGISTER. |
422 | With prefix arg, delete as well. | |
1b8cac5d | 423 | Called from program, takes four args: REGISTER, START, END and DELETE-FLAG. |
efeae993 | 424 | START and END are buffer positions indicating what to copy." |
85698d63 LL |
425 | (interactive (list (register-read-with-preview "Copy to register: ") |
426 | (region-beginning) | |
427 | (region-end) | |
428 | current-prefix-arg)) | |
13191e32 | 429 | (set-register register (filter-buffer-substring start end)) |
2549c068 CY |
430 | (setq deactivate-mark t) |
431 | (cond (delete-flag | |
432 | (delete-region start end)) | |
433 | ((called-interactively-p 'interactive) | |
434 | (indicate-copied-region)))) | |
efeae993 | 435 | |
1b8cac5d RS |
436 | (defun append-to-register (register start end &optional delete-flag) |
437 | "Append region to text in register REGISTER. | |
438 | With prefix arg, delete as well. | |
439 | Called from program, takes four args: REGISTER, START, END and DELETE-FLAG. | |
efeae993 | 440 | START and END are buffer positions indicating what to append." |
85698d63 LL |
441 | (interactive (list (register-read-with-preview "Append to register: ") |
442 | (region-beginning) | |
443 | (region-end) | |
444 | current-prefix-arg)) | |
c81f72ce | 445 | (let ((reg (get-register register)) |
0979429b | 446 | (text (filter-buffer-substring start end)) |
bfabf70a | 447 | (separator (and register-separator (get-register register-separator)))) |
c81f72ce TTN |
448 | (set-register |
449 | register (cond ((not reg) text) | |
0979429b | 450 | ((stringp reg) (concat reg separator text)) |
c81f72ce | 451 | (t (error "Register does not contain text"))))) |
5694896d | 452 | (setq deactivate-mark t) |
2549c068 CY |
453 | (cond (delete-flag |
454 | (delete-region start end)) | |
455 | ((called-interactively-p 'interactive) | |
456 | (indicate-copied-region)))) | |
efeae993 | 457 | |
1b8cac5d RS |
458 | (defun prepend-to-register (register start end &optional delete-flag) |
459 | "Prepend region to text in register REGISTER. | |
460 | With prefix arg, delete as well. | |
461 | Called from program, takes four args: REGISTER, START, END and DELETE-FLAG. | |
efeae993 | 462 | START and END are buffer positions indicating what to prepend." |
85698d63 LL |
463 | (interactive (list (register-read-with-preview "Prepend to register: ") |
464 | (region-beginning) | |
465 | (region-end) | |
466 | current-prefix-arg)) | |
c81f72ce | 467 | (let ((reg (get-register register)) |
0979429b | 468 | (text (filter-buffer-substring start end)) |
bfabf70a | 469 | (separator (and register-separator (get-register register-separator)))) |
c81f72ce TTN |
470 | (set-register |
471 | register (cond ((not reg) text) | |
0979429b | 472 | ((stringp reg) (concat text separator reg)) |
c81f72ce | 473 | (t (error "Register does not contain text"))))) |
5694896d | 474 | (setq deactivate-mark t) |
2549c068 CY |
475 | (cond (delete-flag |
476 | (delete-region start end)) | |
477 | ((called-interactively-p 'interactive) | |
478 | (indicate-copied-region)))) | |
efeae993 | 479 | |
1b8cac5d RS |
480 | (defun copy-rectangle-to-register (register start end &optional delete-flag) |
481 | "Copy rectangular region into register REGISTER. | |
1a86cc81 JB |
482 | With prefix arg, delete as well. |
483 | To insert this register in the buffer, use \\[insert-register]. | |
5ef5d6ce RS |
484 | |
485 | Called from a program, takes four args: REGISTER, START, END and DELETE-FLAG. | |
efeae993 | 486 | START and END are buffer positions giving two corners of rectangle." |
85698d63 LL |
487 | (interactive (list (register-read-with-preview |
488 | "Copy rectangle to register: ") | |
489 | (region-beginning) | |
490 | (region-end) | |
491 | current-prefix-arg)) | |
2549c068 CY |
492 | (let ((rectangle (if delete-flag |
493 | (delete-extract-rectangle start end) | |
494 | (extract-rectangle start end)))) | |
495 | (set-register register rectangle) | |
496 | (when (and (null delete-flag) | |
497 | (called-interactively-p 'interactive)) | |
498 | (setq deactivate-mark t) | |
499 | (indicate-copied-region (length (car rectangle)))))) | |
500 | ||
0f214cdf | 501 | (provide 'register) |
c88ab9ce | 502 | ;;; register.el ends here |