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c88ab9ce ER |
1 | ;;; replace.el --- replace commands for Emacs. |
2 | ||
77176e73 | 3 | ;; Copyright (C) 1985-1991 Free Software Foundation, Inc. |
698e1804 RS |
4 | |
5 | ;; This file is part of GNU Emacs. | |
6 | ||
7 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
8 | ;; it under the terms of the GNU General Public License as published by | |
9 | ;; the Free Software Foundation; either version 1, or (at your option) | |
10 | ;; any later version. | |
11 | ||
12 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
13 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | ;; GNU General Public License for more details. | |
16 | ||
17 | ;; You should have received a copy of the GNU General Public License | |
18 | ;; along with GNU Emacs; see the file COPYING. If not, write to | |
19 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | ||
21 | ||
73fa8346 BP |
22 | ;;;###autoload |
23 | (defconst case-replace t "\ | |
24 | *Non-nil means query-replace should preserve case in replacements.") | |
77176e73 | 25 | |
da44e784 RM |
26 | ;;;###autoload |
27 | (defun query-replace (from-string to-string &optional arg) | |
28 | "Replace some occurrences of FROM-STRING with TO-STRING. | |
29 | As each match is found, the user must type a character saying | |
30 | what to do with it. For directions, type \\[help-command] at that time. | |
31 | ||
32 | Preserves case in each replacement if case-replace and case-fold-search | |
33 | are non-nil and FROM-STRING has no uppercase letters. | |
34 | Third arg DELIMITED (prefix arg if interactive) non-nil means replace | |
35 | only matches surrounded by word boundaries." | |
36 | (interactive "sQuery replace: \nsQuery replace %s with: \nP") | |
37 | (perform-replace from-string to-string t nil arg) | |
38 | (message "Done")) | |
73fa8346 BP |
39 | ;;;###autoload |
40 | (define-key esc-map "%" 'query-replace) | |
da44e784 RM |
41 | |
42 | ;;;###autoload | |
43 | (defun query-replace-regexp (regexp to-string &optional arg) | |
44 | "Replace some things after point matching REGEXP with TO-STRING. | |
45 | As each match is found, the user must type a character saying | |
46 | what to do with it. For directions, type \\[help-command] at that time. | |
47 | ||
48 | Preserves case in each replacement if case-replace and case-fold-search | |
49 | are non-nil and REGEXP has no uppercase letters. | |
50 | Third arg DELIMITED (prefix arg if interactive) non-nil means replace | |
51 | only matches surrounded by word boundaries. | |
52 | In TO-STRING, \\& means insert what matched REGEXP, | |
53 | and \\=\\<n> means insert what matched <n>th \\(...\\) in REGEXP." | |
54 | (interactive "sQuery replace regexp: \nsQuery replace regexp %s with: \nP") | |
55 | (perform-replace regexp to-string t t arg) | |
56 | (message "Done")) | |
57 | ||
58 | ;;;###autoload | |
59 | (defun map-query-replace-regexp (regexp to-strings &optional arg) | |
60 | "Replace some matches for REGEXP with various strings, in rotation. | |
61 | The second argument TO-STRINGS contains the replacement strings, separated | |
62 | by spaces. This command works like `query-replace-regexp' except | |
63 | that each successive replacement uses the next successive replacement string, | |
64 | wrapping around from the last such string to the first. | |
65 | ||
66 | Non-interactively, TO-STRINGS may be a list of replacement strings. | |
67 | ||
68 | A prefix argument N says to use each replacement string N times | |
69 | before rotating to the next." | |
70 | (interactive "sMap query replace (regexp): \nsQuery replace %s with (space-separated strings): \nP") | |
71 | (let (replacements) | |
72 | (if (listp to-strings) | |
73 | (setq replacements to-strings) | |
74 | (while (/= (length to-strings) 0) | |
75 | (if (string-match " " to-strings) | |
76 | (setq replacements | |
77 | (append replacements | |
78 | (list (substring to-strings 0 | |
79 | (string-match " " to-strings)))) | |
80 | to-strings (substring to-strings | |
81 | (1+ (string-match " " to-strings)))) | |
82 | (setq replacements (append replacements (list to-strings)) | |
83 | to-strings "")))) | |
84 | (perform-replace regexp replacements t t nil arg)) | |
85 | (message "Done")) | |
86 | ||
87 | ;;;###autoload | |
88 | (defun replace-string (from-string to-string &optional delimited) | |
89 | "Replace occurrences of FROM-STRING with TO-STRING. | |
90 | Preserve case in each match if `case-replace' and `case-fold-search' | |
91 | are non-nil and FROM-STRING has no uppercase letters. | |
92 | Third arg DELIMITED (prefix arg if interactive) non-nil means replace | |
93 | only matches surrounded by word boundaries. | |
94 | ||
95 | This function is usually the wrong thing to use in a Lisp program. | |
96 | What you probably want is a loop like this: | |
97 | (while (search-forward OLD-STRING nil t) | |
98 | (replace-match REPLACEMENT nil t)) | |
99 | which will run faster and will not set the mark or print anything." | |
100 | (interactive "sReplace string: \nsReplace string %s with: \nP") | |
101 | (perform-replace from-string to-string nil nil delimited) | |
102 | (message "Done")) | |
103 | ||
104 | ;;;###autoload | |
105 | (defun replace-regexp (regexp to-string &optional delimited) | |
106 | "Replace things after point matching REGEXP with TO-STRING. | |
107 | Preserve case in each match if case-replace and case-fold-search | |
108 | are non-nil and REGEXP has no uppercase letters. | |
109 | Third arg DELIMITED (prefix arg if interactive) non-nil means replace | |
110 | only matches surrounded by word boundaries. | |
111 | In TO-STRING, \\& means insert what matched REGEXP, | |
112 | and \\=\\<n> means insert what matched <n>th \\(...\\) in REGEXP. | |
113 | ||
114 | This function is usually the wrong thing to use in a Lisp program. | |
115 | What you probably want is a loop like this: | |
116 | (while (re-search-forward REGEXP nil t) | |
117 | (replace-match REPLACEMENT nil nil)) | |
118 | which will run faster and will not set the mark or print anything." | |
119 | (interactive "sReplace regexp: \nsReplace regexp %s with: \nP") | |
120 | (perform-replace regexp to-string nil t delimited) | |
121 | (message "Done")) | |
122 | ||
698e1804 RS |
123 | (fset 'delete-non-matching-lines 'keep-lines) |
124 | (defun keep-lines (regexp) | |
125 | "Delete all lines except those containing matches for REGEXP. | |
126 | A match split across lines preserves all the lines it lies in. | |
127 | Applies to all lines after point." | |
128 | (interactive "sKeep lines (containing match for regexp): ") | |
129 | (save-excursion | |
130 | (or (bolp) (forward-line 1)) | |
131 | (let ((start (point))) | |
132 | (while (not (eobp)) | |
133 | ;; Start is first char not preserved by previous match. | |
134 | (if (not (re-search-forward regexp nil 'move)) | |
135 | (delete-region start (point-max)) | |
136 | (let ((end (save-excursion (goto-char (match-beginning 0)) | |
137 | (beginning-of-line) | |
138 | (point)))) | |
139 | ;; Now end is first char preserved by the new match. | |
140 | (if (< start end) | |
141 | (delete-region start end)))) | |
142 | (setq start (save-excursion (forward-line 1) | |
143 | (point))) | |
144 | ;; If the match was empty, avoid matching again at same place. | |
145 | (and (not (eobp)) (= (match-beginning 0) (match-end 0)) | |
146 | (forward-char 1)))))) | |
147 | ||
148 | (fset 'delete-matching-lines 'flush-lines) | |
149 | (defun flush-lines (regexp) | |
150 | "Delete lines containing matches for REGEXP. | |
151 | If a match is split across lines, all the lines it lies in are deleted. | |
152 | Applies to lines after point." | |
153 | (interactive "sFlush lines (containing match for regexp): ") | |
154 | (save-excursion | |
155 | (while (and (not (eobp)) | |
156 | (re-search-forward regexp nil t)) | |
157 | (delete-region (save-excursion (goto-char (match-beginning 0)) | |
158 | (beginning-of-line) | |
159 | (point)) | |
160 | (progn (forward-line 1) (point)))))) | |
161 | ||
162 | (fset 'count-matches 'how-many) | |
163 | (defun how-many (regexp) | |
164 | "Print number of matches for REGEXP following point." | |
165 | (interactive "sHow many matches for (regexp): ") | |
166 | (let ((count 0) opoint) | |
167 | (save-excursion | |
168 | (while (and (not (eobp)) | |
169 | (progn (setq opoint (point)) | |
170 | (re-search-forward regexp nil t))) | |
171 | (if (= opoint (point)) | |
172 | (forward-char 1) | |
173 | (setq count (1+ count)))) | |
174 | (message "%d occurrences" count)))) | |
175 | ||
176 | (defvar occur-mode-map ()) | |
177 | (if occur-mode-map | |
178 | () | |
179 | (setq occur-mode-map (make-sparse-keymap)) | |
180 | (define-key occur-mode-map "\C-c\C-c" 'occur-mode-goto-occurrence)) | |
181 | ||
182 | (defvar occur-buffer nil) | |
183 | (defvar occur-nlines nil) | |
184 | (defvar occur-pos-list nil) | |
f1c9e147 | 185 | (defvar occur-last-string "") |
698e1804 RS |
186 | |
187 | (defun occur-mode () | |
188 | "Major mode for output from \\[occur]. | |
189 | Move point to one of the occurrences in this buffer, | |
190 | then use \\[occur-mode-goto-occurrence] to go to the same occurrence | |
191 | in the buffer that the occurrences were found in. | |
192 | \\{occur-mode-map}" | |
193 | (kill-all-local-variables) | |
194 | (use-local-map occur-mode-map) | |
195 | (setq major-mode 'occur-mode) | |
196 | (setq mode-name "Occur") | |
197 | (make-local-variable 'occur-buffer) | |
198 | (make-local-variable 'occur-nlines) | |
199 | (make-local-variable 'occur-pos-list)) | |
200 | ||
201 | (defun occur-mode-goto-occurrence () | |
202 | "Go to the line this occurrence was found in, in the buffer it was found in." | |
203 | (interactive) | |
204 | (if (or (null occur-buffer) | |
205 | (null (buffer-name occur-buffer))) | |
206 | (progn | |
207 | (setq occur-buffer nil | |
208 | occur-pos-list nil) | |
209 | (error "Buffer in which occurrences were found is deleted"))) | |
210 | (let* ((occur-number (save-excursion | |
211 | (beginning-of-line) | |
212 | (/ (1- (count-lines (point-min) | |
213 | (save-excursion | |
214 | (beginning-of-line) | |
215 | (point)))) | |
216 | (cond ((< occur-nlines 0) | |
217 | (- 2 occur-nlines)) | |
218 | ((> occur-nlines 0) | |
219 | (+ 2 (* 2 occur-nlines))) | |
220 | (t 1))))) | |
221 | (pos (nth occur-number occur-pos-list))) | |
222 | (pop-to-buffer occur-buffer) | |
223 | (goto-char (marker-position pos)))) | |
224 | ||
225 | (defvar list-matching-lines-default-context-lines 0 | |
da44e784 | 226 | "*Default number of context lines to include around a `list-matching-lines' |
698e1804 RS |
227 | match. A negative number means to include that many lines before the match. |
228 | A positive number means to include that many lines both before and after.") | |
229 | ||
230 | (defvar occur-whole-buffer nil | |
231 | "If t, occur operates on whole buffer, otherwise occur starts from point. | |
232 | default is nil.") | |
233 | ||
234 | (fset 'list-matching-lines 'occur) | |
235 | ||
236 | (defun occur (regexp &optional nlines) | |
f1c9e147 | 237 | "Show lines containing a match for REGEXP. If the global variable |
da44e784 | 238 | `occur-whole-buffer' is non-nil, the entire buffer is searched, otherwise |
f1c9e147 | 239 | search begins at point. Interactively, REGEXP defaults to the last REGEXP |
da44e784 RM |
240 | used interactively with \\[occur]. |
241 | ||
242 | If a match spreads across multiple lines, all those lines are shown. | |
698e1804 | 243 | |
da44e784 RM |
244 | Each line is displayed with NLINES lines before and after, or -NLINES |
245 | before if NLINES is negative. | |
246 | NLINES defaults to `list-matching-lines-default-context-lines'. | |
698e1804 RS |
247 | Interactively it is the prefix arg. |
248 | ||
249 | The lines are shown in a buffer named *Occur*. | |
250 | It serves as a menu to find any of the occurrences in this buffer. | |
251 | \\[describe-mode] in that buffer will explain how." | |
f1c9e147 | 252 | (interactive (list (setq occur-last-string |
253 | (read-string "List lines matching regexp: " | |
254 | occur-last-string)) | |
255 | current-prefix-arg)) | |
698e1804 RS |
256 | (setq nlines (if nlines (prefix-numeric-value nlines) |
257 | list-matching-lines-default-context-lines)) | |
258 | (let ((first t) | |
259 | (buffer (current-buffer)) | |
260 | (linenum 1) | |
79c2e52b JB |
261 | (prevpos (point-min)) |
262 | (final-context-start (make-marker))) | |
698e1804 RS |
263 | (if (not occur-whole-buffer) |
264 | (save-excursion | |
265 | (beginning-of-line) | |
266 | (setq linenum (1+ (count-lines (point-min) (point)))) | |
267 | (setq prevpos (point)))) | |
268 | (with-output-to-temp-buffer "*Occur*" | |
269 | (save-excursion | |
270 | (set-buffer standard-output) | |
271 | (insert "Lines matching ") | |
272 | (prin1 regexp) | |
273 | (insert " in buffer " (buffer-name buffer) ?. ?\n) | |
274 | (occur-mode) | |
275 | (setq occur-buffer buffer) | |
276 | (setq occur-nlines nlines) | |
277 | (setq occur-pos-list ())) | |
278 | (if (eq buffer standard-output) | |
279 | (goto-char (point-max))) | |
280 | (save-excursion | |
281 | (if occur-whole-buffer | |
282 | (beginning-of-buffer)) | |
283 | ;; Find next match, but give up if prev match was at end of buffer. | |
284 | (while (and (not (= prevpos (point-max))) | |
285 | (re-search-forward regexp nil t)) | |
da44e784 | 286 | (goto-char (match-beginning 0)) |
698e1804 RS |
287 | (beginning-of-line) |
288 | (setq linenum (+ linenum (count-lines prevpos (point)))) | |
289 | (setq prevpos (point)) | |
da44e784 | 290 | (goto-char (match-end 0)) |
698e1804 | 291 | (let* ((start (save-excursion |
da44e784 | 292 | (goto-char (match-beginning 0)) |
698e1804 RS |
293 | (forward-line (if (< nlines 0) nlines (- nlines))) |
294 | (point))) | |
295 | (end (save-excursion | |
da44e784 | 296 | (goto-char (match-end 0)) |
698e1804 RS |
297 | (if (> nlines 0) |
298 | (forward-line (1+ nlines)) | |
299 | (forward-line 1)) | |
300 | (point))) | |
301 | (tag (format "%3d" linenum)) | |
302 | (empty (make-string (length tag) ?\ )) | |
303 | tem) | |
304 | (save-excursion | |
79c2e52b JB |
305 | (setq tem (make-marker)) |
306 | (set-marker tem (point)) | |
698e1804 RS |
307 | (set-buffer standard-output) |
308 | (setq occur-pos-list (cons tem occur-pos-list)) | |
309 | (or first (zerop nlines) | |
310 | (insert "--------\n")) | |
311 | (setq first nil) | |
312 | (insert-buffer-substring buffer start end) | |
313 | (backward-char (- end start)) | |
da44e784 | 314 | (setq tem nlines) |
698e1804 RS |
315 | (while (> tem 0) |
316 | (insert empty ?:) | |
317 | (forward-line 1) | |
318 | (setq tem (1- tem))) | |
79c2e52b | 319 | (let ((this-linenum linenum)) |
da44e784 RM |
320 | (set-marker final-context-start |
321 | (+ (point) (- (match-end 0) (match-beginning 0)))) | |
322 | (while (< (point) final-context-start) | |
323 | (if (null tag) | |
324 | (setq tag (format "%3d" this-linenum))) | |
325 | (insert tag ?:) | |
326 | (setq tag nil) | |
327 | (forward-line 1) | |
328 | (setq this-linenum (1+ this-linenum)))) | |
698e1804 RS |
329 | (while (< tem nlines) |
330 | (insert empty ?:) | |
331 | (forward-line 1) | |
332 | (setq tem (1+ tem)))) | |
333 | (forward-line 1))) | |
334 | (set-buffer standard-output) | |
335 | ;; Put positions in increasing order to go with buffer. | |
336 | (setq occur-pos-list (nreverse occur-pos-list)) | |
337 | (if (interactive-p) | |
338 | (message "%d matching lines." (length occur-pos-list))))))) | |
339 | \f | |
340 | (defconst query-replace-help | |
341 | "Type Space or `y' to replace one match, Delete or `n' to skip to next, | |
342 | ESC or `q' to exit, Period to replace one match and exit, | |
343 | Comma to replace but not move point immediately, | |
344 | C-r to enter recursive edit (\\[exit-recursive-edit] to get out again), | |
345 | C-w to delete match and recursive edit, | |
346 | C-l to clear the screen, redisplay, and offer same replacement again, | |
347 | ! to replace all remaining matches with no more questions, | |
348 | ^ to move point back to previous match." | |
349 | "Help message while in query-replace") | |
350 | ||
da44e784 | 351 | ;;;###autoload |
698e1804 RS |
352 | (defun perform-replace (from-string replacements |
353 | query-flag regexp-flag delimited-flag | |
354 | &optional repeat-count) | |
355 | "Subroutine of `query-replace'. Its complexity handles interactive queries. | |
356 | Don't use this in your own program unless you want to query and set the mark | |
357 | just as `query-replace' does. Instead, write a simple loop like this: | |
358 | (while (re-search-forward \"foo[ \t]+bar\" nil t) | |
359 | (replace-match \"foobar\" nil nil)) | |
360 | which will run faster and do exactly what you probably want." | |
361 | (let ((nocasify (not (and case-fold-search case-replace | |
362 | (string-equal from-string | |
363 | (downcase from-string))))) | |
364 | (literal (not regexp-flag)) | |
365 | (search-function (if regexp-flag 're-search-forward 'search-forward)) | |
366 | (search-string from-string) | |
367 | (next-replacement nil) | |
368 | (replacement-index 0) | |
369 | (keep-going t) | |
370 | (stack nil) | |
371 | (next-rotate-count 0) | |
372 | (replace-count 0) | |
da44e784 RM |
373 | (lastrepl nil) ;Position after last match considered. |
374 | (match-after t)) | |
698e1804 RS |
375 | (if (stringp replacements) |
376 | (setq next-replacement replacements) | |
377 | (or repeat-count (setq repeat-count 1))) | |
378 | (if delimited-flag | |
379 | (setq search-function 're-search-forward | |
380 | search-string (concat "\\b" | |
381 | (if regexp-flag from-string | |
382 | (regexp-quote from-string)) | |
383 | "\\b"))) | |
384 | (push-mark) | |
385 | (undo-boundary) | |
386 | (while (and keep-going | |
387 | (not (eobp)) | |
388 | (funcall search-function search-string nil t) | |
da44e784 RM |
389 | ;; If the search string matches immediately after |
390 | ;; the previous match, but it did not match there | |
391 | ;; before the replacement was done, ignore the match. | |
392 | (if (or (eq lastrepl (point)) | |
393 | (and regexp-flag | |
394 | (eq lastrepl (match-beginning 0)) | |
395 | (not match-again))) | |
396 | (if (eobp) | |
397 | nil | |
698e1804 RS |
398 | ;; Don't replace the null string |
399 | ;; right after end of previous replacement. | |
400 | (forward-char 1) | |
401 | (funcall search-function search-string nil t)) | |
402 | t)) | |
da44e784 RM |
403 | ;; Before we make the replacement, decide whether the search string |
404 | ;; can match again just after this match. | |
405 | (if regexp-flag | |
406 | (setq match-again (looking-at search-string))) | |
698e1804 RS |
407 | ;; If time for a change, advance to next replacement string. |
408 | (if (and (listp replacements) | |
409 | (= next-rotate-count replace-count)) | |
410 | (progn | |
411 | (setq next-rotate-count | |
412 | (+ next-rotate-count repeat-count)) | |
413 | (setq next-replacement (nth replacement-index replacements)) | |
414 | (setq replacement-index (% (1+ replacement-index) (length replacements))))) | |
415 | (if (not query-flag) | |
416 | (progn | |
417 | (replace-match next-replacement nocasify literal) | |
418 | (setq replace-count (1+ replace-count))) | |
419 | (undo-boundary) | |
420 | (let (done replaced) | |
421 | (while (not done) | |
422 | ;; Preserve the match data. Process filters and sentinels | |
423 | ;; could run inside read-char.. | |
424 | (let ((data (match-data)) | |
425 | (help-form | |
426 | '(concat "Query replacing " | |
427 | (if regexp-flag "regexp " "") | |
428 | from-string " with " next-replacement ".\n\n" | |
429 | (substitute-command-keys query-replace-help)))) | |
430 | (setq char help-char) | |
431 | (while (or (not (numberp char)) (= char help-char)) | |
432 | (message "Query replacing %s with %s: " from-string next-replacement) | |
433 | (setq char (read-event)) | |
434 | (if (and (numberp char) (= char ??)) | |
435 | (setq unread-command-char help-char char help-char))) | |
436 | (store-match-data data)) | |
437 | (cond ((or (= char ?\e) | |
438 | (= char ?q)) | |
439 | (setq keep-going nil) | |
440 | (setq done t)) | |
441 | ((= char ?^) | |
442 | (let ((elt (car stack))) | |
443 | (goto-char (car elt)) | |
444 | (setq replaced (eq t (cdr elt))) | |
445 | (or replaced | |
446 | (store-match-data (cdr elt))) | |
447 | (setq stack (cdr stack)))) | |
448 | ((or (= char ?\ ) | |
449 | (= char ?y)) | |
450 | (or replaced | |
451 | (replace-match next-replacement nocasify literal)) | |
452 | (setq done t replaced t)) | |
453 | ((= char ?\.) | |
454 | (or replaced | |
455 | (replace-match next-replacement nocasify literal)) | |
456 | (setq keep-going nil) | |
457 | (setq done t replaced t)) | |
458 | ((= char ?\,) | |
459 | (if (not replaced) | |
460 | (progn | |
461 | (replace-match next-replacement nocasify literal) | |
462 | (setq replaced t)))) | |
463 | ((= char ?!) | |
464 | (or replaced | |
465 | (replace-match next-replacement nocasify literal)) | |
466 | (setq done t query-flag nil replaced t)) | |
467 | ((or (= char ?\177) | |
468 | (= char ?n)) | |
469 | (setq done t)) | |
470 | ((= char ?\C-l) | |
471 | (recenter nil)) | |
472 | ((= char ?\C-r) | |
473 | (store-match-data | |
474 | (prog1 (match-data) | |
da44e784 RM |
475 | (save-excursion (recursive-edit)))) |
476 | ;; Before we make the replacement, | |
477 | ;; decide whether the search string | |
478 | ;; can match again just after this match. | |
479 | (if regexp-flag | |
480 | (setq match-again (looking-at search-string)))) | |
698e1804 RS |
481 | ((= char ?\C-w) |
482 | (delete-region (match-beginning 0) (match-end 0)) | |
483 | (store-match-data | |
484 | (prog1 (match-data) | |
485 | (save-excursion (recursive-edit)))) | |
486 | (setq replaced t)) | |
487 | (t | |
488 | (setq keep-going nil) | |
489 | (setq unread-command-char char) | |
490 | (setq done t)))) | |
491 | ;; Record previous position for ^ when we move on. | |
492 | ;; Change markers to numbers in the match data | |
493 | ;; since lots of markers slow down editing. | |
494 | (setq stack | |
495 | (cons (cons (point) | |
496 | (or replaced | |
497 | (mapcar | |
498 | (function (lambda (elt) | |
499 | (and elt | |
500 | (marker-position elt)))) | |
501 | (match-data)))) | |
502 | stack)) | |
503 | (if replaced (setq replace-count (1+ replace-count))))) | |
504 | (setq lastrepl (point))) | |
505 | (and keep-going stack))) | |
506 | \f | |
507 | (defun map-query-replace-regexp (regexp to-strings &optional arg) | |
508 | "Replace some matches for REGEXP with various strings, in rotation. | |
509 | The second argument TO-STRINGS contains the replacement strings, separated | |
510 | by spaces. This command works like `query-replace-regexp' except | |
da44e784 RM |
511 | that each successive replacement uses the next successive replacement |
512 | string, wrapping around from the last such string to the first. | |
698e1804 RS |
513 | |
514 | Non-interactively, TO-STRINGS may be a list of replacement strings. | |
515 | ||
516 | A prefix argument N says to use each replacement string N times | |
517 | before rotating to the next." | |
518 | (interactive "sMap query replace (regexp): \nsQuery replace %s with (space-separated strings): \nP") | |
519 | (let (replacements) | |
520 | (if (listp to-strings) | |
521 | (setq replacements to-strings) | |
522 | (while (/= (length to-strings) 0) | |
523 | (if (string-match " " to-strings) | |
524 | (setq replacements | |
525 | (append replacements | |
526 | (list (substring to-strings 0 | |
527 | (string-match " " to-strings)))) | |
528 | to-strings (substring to-strings | |
529 | (1+ (string-match " " to-strings)))) | |
530 | (setq replacements (append replacements (list to-strings)) | |
531 | to-strings "")))) | |
532 | (perform-replace regexp replacements t t nil arg)) | |
533 | (message "Done")) | |
534 | ||
c88ab9ce | 535 | ;;; replace.el ends here |