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c88ab9ce ER |
1 | ;;; replace.el --- replace commands for Emacs. |
2 | ||
ba343182 | 3 | ;; Copyright (C) 1985, 1986, 1987, 1992 Free Software Foundation, Inc. |
3a801d0c | 4 | |
698e1804 RS |
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 | |
e5d77022 | 9 | ;; the Free Software Foundation; either version 2, or (at your option) |
698e1804 RS |
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 | ||
d9ecc911 ER |
21 | ;;; Commentary: |
22 | ||
23 | ;; This package supplies the string and regular-expression replace functions | |
24 | ;; documented in the Emacs user's manual. | |
25 | ||
4f4b8eff | 26 | ;;; Code: |
698e1804 | 27 | |
73fa8346 BP |
28 | (defconst case-replace t "\ |
29 | *Non-nil means query-replace should preserve case in replacements.") | |
77176e73 | 30 | |
770970cb RS |
31 | (defvar query-replace-history nil) |
32 | ||
33 | (defun query-replace-read-args (string) | |
34 | (let (from to) | |
35 | (setq from (read-from-minibuffer (format "%s: " string) | |
36 | nil nil nil | |
37 | 'query-replace-history)) | |
38 | (setq to (read-from-minibuffer (format "%s %s with: " string from) | |
39 | nil nil nil | |
40 | 'query-replace-history)) | |
41 | (list from to current-prefix-arg))) | |
42 | ||
da44e784 RM |
43 | (defun query-replace (from-string to-string &optional arg) |
44 | "Replace some occurrences of FROM-STRING 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 FROM-STRING has no uppercase letters. | |
50 | Third arg DELIMITED (prefix arg if interactive) non-nil means replace | |
81bdc14d RS |
51 | only matches surrounded by word boundaries. |
52 | ||
53 | To customize possible responses, change the \"bindings\" in `query-replace-map'." | |
770970cb | 54 | (interactive (query-replace-read-args "Query replace")) |
da44e784 | 55 | (perform-replace from-string to-string t nil arg) |
81bdc14d | 56 | (or unread-command-events (message "Done"))) |
73fa8346 | 57 | (define-key esc-map "%" 'query-replace) |
da44e784 | 58 | |
da44e784 RM |
59 | (defun query-replace-regexp (regexp to-string &optional arg) |
60 | "Replace some things after point matching REGEXP with TO-STRING. | |
61 | As each match is found, the user must type a character saying | |
62 | what to do with it. For directions, type \\[help-command] at that time. | |
63 | ||
64 | Preserves case in each replacement if case-replace and case-fold-search | |
65 | are non-nil and REGEXP has no uppercase letters. | |
66 | Third arg DELIMITED (prefix arg if interactive) non-nil means replace | |
67 | only matches surrounded by word boundaries. | |
68 | In TO-STRING, \\& means insert what matched REGEXP, | |
69 | and \\=\\<n> means insert what matched <n>th \\(...\\) in REGEXP." | |
770970cb | 70 | (interactive (query-replace-read-args "Query replace regexp")) |
da44e784 | 71 | (perform-replace regexp to-string t t arg) |
81bdc14d | 72 | (or unread-command-events (message "Done"))) |
da44e784 | 73 | |
da44e784 RM |
74 | (defun map-query-replace-regexp (regexp to-strings &optional arg) |
75 | "Replace some matches for REGEXP with various strings, in rotation. | |
76 | The second argument TO-STRINGS contains the replacement strings, separated | |
77 | by spaces. This command works like `query-replace-regexp' except | |
78 | that each successive replacement uses the next successive replacement string, | |
79 | wrapping around from the last such string to the first. | |
80 | ||
81 | Non-interactively, TO-STRINGS may be a list of replacement strings. | |
82 | ||
83 | A prefix argument N says to use each replacement string N times | |
84 | before rotating to the next." | |
770970cb RS |
85 | (interactive |
86 | (let (from to) | |
87 | (setq from (read-from-minibuffer "Map query replace (regexp): " | |
88 | nil nil nil | |
89 | 'query-replace-history)) | |
90 | (setq to (read-from-minibuffer | |
91 | (format "Query replace %s with (space-separated strings): " | |
92 | from) | |
93 | nil nil nil | |
94 | 'query-replace-history)) | |
95 | (list from to current-prefix-arg))) | |
da44e784 RM |
96 | (let (replacements) |
97 | (if (listp to-strings) | |
98 | (setq replacements to-strings) | |
99 | (while (/= (length to-strings) 0) | |
100 | (if (string-match " " to-strings) | |
101 | (setq replacements | |
102 | (append replacements | |
103 | (list (substring to-strings 0 | |
104 | (string-match " " to-strings)))) | |
105 | to-strings (substring to-strings | |
106 | (1+ (string-match " " to-strings)))) | |
107 | (setq replacements (append replacements (list to-strings)) | |
108 | to-strings "")))) | |
109 | (perform-replace regexp replacements t t nil arg)) | |
81bdc14d | 110 | (or unread-command-events (message "Done"))) |
da44e784 | 111 | |
da44e784 RM |
112 | (defun replace-string (from-string to-string &optional delimited) |
113 | "Replace occurrences of FROM-STRING with TO-STRING. | |
114 | Preserve case in each match if `case-replace' and `case-fold-search' | |
115 | are non-nil and FROM-STRING has no uppercase letters. | |
116 | Third arg DELIMITED (prefix arg if interactive) non-nil means replace | |
117 | only matches surrounded by word boundaries. | |
118 | ||
119 | This function is usually the wrong thing to use in a Lisp program. | |
120 | What you probably want is a loop like this: | |
121 | (while (search-forward OLD-STRING nil t) | |
122 | (replace-match REPLACEMENT nil t)) | |
123 | which will run faster and will not set the mark or print anything." | |
770970cb | 124 | (interactive (query-replace-read-args "Replace string")) |
da44e784 | 125 | (perform-replace from-string to-string nil nil delimited) |
81bdc14d | 126 | (or unread-command-events (message "Done"))) |
da44e784 | 127 | |
da44e784 RM |
128 | (defun replace-regexp (regexp to-string &optional delimited) |
129 | "Replace things after point matching REGEXP with TO-STRING. | |
130 | Preserve case in each match if case-replace and case-fold-search | |
131 | are non-nil and REGEXP has no uppercase letters. | |
132 | Third arg DELIMITED (prefix arg if interactive) non-nil means replace | |
133 | only matches surrounded by word boundaries. | |
134 | In TO-STRING, \\& means insert what matched REGEXP, | |
135 | and \\=\\<n> means insert what matched <n>th \\(...\\) in REGEXP. | |
136 | ||
137 | This function is usually the wrong thing to use in a Lisp program. | |
138 | What you probably want is a loop like this: | |
139 | (while (re-search-forward REGEXP nil t) | |
140 | (replace-match REPLACEMENT nil nil)) | |
141 | which will run faster and will not set the mark or print anything." | |
770970cb | 142 | (interactive (query-replace-read-args "Replace regexp")) |
da44e784 | 143 | (perform-replace regexp to-string nil t delimited) |
81bdc14d | 144 | (or unread-command-events (message "Done"))) |
4c53bd2b RS |
145 | \f |
146 | (defvar regexp-history nil | |
147 | "History list for some commands that read regular expressions.") | |
da44e784 | 148 | |
31e1d920 | 149 | (defalias 'delete-non-matching-lines 'keep-lines) |
698e1804 RS |
150 | (defun keep-lines (regexp) |
151 | "Delete all lines except those containing matches for REGEXP. | |
152 | A match split across lines preserves all the lines it lies in. | |
153 | Applies to all lines after point." | |
4c53bd2b | 154 | (interactive (list (read-from-minibuffer |
72f21cdf | 155 | "Keep lines (containing match for regexp): " |
4c53bd2b | 156 | nil nil nil 'regexp-history))) |
698e1804 RS |
157 | (save-excursion |
158 | (or (bolp) (forward-line 1)) | |
159 | (let ((start (point))) | |
160 | (while (not (eobp)) | |
161 | ;; Start is first char not preserved by previous match. | |
162 | (if (not (re-search-forward regexp nil 'move)) | |
163 | (delete-region start (point-max)) | |
164 | (let ((end (save-excursion (goto-char (match-beginning 0)) | |
165 | (beginning-of-line) | |
166 | (point)))) | |
167 | ;; Now end is first char preserved by the new match. | |
168 | (if (< start end) | |
169 | (delete-region start end)))) | |
170 | (setq start (save-excursion (forward-line 1) | |
171 | (point))) | |
172 | ;; If the match was empty, avoid matching again at same place. | |
173 | (and (not (eobp)) (= (match-beginning 0) (match-end 0)) | |
174 | (forward-char 1)))))) | |
175 | ||
31e1d920 | 176 | (defalias 'delete-matching-lines 'flush-lines) |
698e1804 RS |
177 | (defun flush-lines (regexp) |
178 | "Delete lines containing matches for REGEXP. | |
179 | If a match is split across lines, all the lines it lies in are deleted. | |
180 | Applies to lines after point." | |
4c53bd2b | 181 | (interactive (list (read-from-minibuffer |
72f21cdf | 182 | "Flush lines (containing match for regexp): " |
4c53bd2b | 183 | nil nil nil 'regexp-history))) |
698e1804 RS |
184 | (save-excursion |
185 | (while (and (not (eobp)) | |
186 | (re-search-forward regexp nil t)) | |
187 | (delete-region (save-excursion (goto-char (match-beginning 0)) | |
188 | (beginning-of-line) | |
189 | (point)) | |
190 | (progn (forward-line 1) (point)))))) | |
191 | ||
31e1d920 | 192 | (defalias 'count-matches 'how-many) |
698e1804 RS |
193 | (defun how-many (regexp) |
194 | "Print number of matches for REGEXP following point." | |
4c53bd2b | 195 | (interactive (list (read-from-minibuffer |
72f21cdf | 196 | "How many matches for (regexp): " |
4c53bd2b | 197 | nil nil nil 'regexp-history))) |
698e1804 RS |
198 | (let ((count 0) opoint) |
199 | (save-excursion | |
200 | (while (and (not (eobp)) | |
201 | (progn (setq opoint (point)) | |
202 | (re-search-forward regexp nil t))) | |
203 | (if (= opoint (point)) | |
204 | (forward-char 1) | |
205 | (setq count (1+ count)))) | |
206 | (message "%d occurrences" count)))) | |
4c53bd2b | 207 | \f |
698e1804 RS |
208 | (defvar occur-mode-map ()) |
209 | (if occur-mode-map | |
210 | () | |
211 | (setq occur-mode-map (make-sparse-keymap)) | |
212 | (define-key occur-mode-map "\C-c\C-c" 'occur-mode-goto-occurrence)) | |
213 | ||
214 | (defvar occur-buffer nil) | |
215 | (defvar occur-nlines nil) | |
216 | (defvar occur-pos-list nil) | |
217 | ||
218 | (defun occur-mode () | |
219 | "Major mode for output from \\[occur]. | |
220 | Move point to one of the occurrences in this buffer, | |
221 | then use \\[occur-mode-goto-occurrence] to go to the same occurrence | |
222 | in the buffer that the occurrences were found in. | |
223 | \\{occur-mode-map}" | |
224 | (kill-all-local-variables) | |
225 | (use-local-map occur-mode-map) | |
226 | (setq major-mode 'occur-mode) | |
227 | (setq mode-name "Occur") | |
228 | (make-local-variable 'occur-buffer) | |
229 | (make-local-variable 'occur-nlines) | |
4baf5620 RS |
230 | (make-local-variable 'occur-pos-list) |
231 | (run-hooks 'occur-mode-hook)) | |
698e1804 RS |
232 | |
233 | (defun occur-mode-goto-occurrence () | |
234 | "Go to the line this occurrence was found in, in the buffer it was found in." | |
235 | (interactive) | |
236 | (if (or (null occur-buffer) | |
237 | (null (buffer-name occur-buffer))) | |
238 | (progn | |
239 | (setq occur-buffer nil | |
240 | occur-pos-list nil) | |
241 | (error "Buffer in which occurrences were found is deleted"))) | |
242 | (let* ((occur-number (save-excursion | |
243 | (beginning-of-line) | |
244 | (/ (1- (count-lines (point-min) | |
245 | (save-excursion | |
246 | (beginning-of-line) | |
247 | (point)))) | |
248 | (cond ((< occur-nlines 0) | |
249 | (- 2 occur-nlines)) | |
250 | ((> occur-nlines 0) | |
251 | (+ 2 (* 2 occur-nlines))) | |
252 | (t 1))))) | |
253 | (pos (nth occur-number occur-pos-list))) | |
43549f18 RS |
254 | (or pos |
255 | (error "No occurrence on this line")) | |
698e1804 RS |
256 | (pop-to-buffer occur-buffer) |
257 | (goto-char (marker-position pos)))) | |
4c53bd2b | 258 | \f |
698e1804 | 259 | (defvar list-matching-lines-default-context-lines 0 |
da44e784 | 260 | "*Default number of context lines to include around a `list-matching-lines' |
698e1804 RS |
261 | match. A negative number means to include that many lines before the match. |
262 | A positive number means to include that many lines both before and after.") | |
263 | ||
31e1d920 | 264 | (defalias 'list-matching-lines 'occur) |
698e1804 RS |
265 | |
266 | (defun occur (regexp &optional nlines) | |
99976f85 | 267 | "Show all lines in the current buffer containing a match for REGEXP. |
da44e784 RM |
268 | |
269 | If a match spreads across multiple lines, all those lines are shown. | |
698e1804 | 270 | |
da44e784 RM |
271 | Each line is displayed with NLINES lines before and after, or -NLINES |
272 | before if NLINES is negative. | |
273 | NLINES defaults to `list-matching-lines-default-context-lines'. | |
698e1804 RS |
274 | Interactively it is the prefix arg. |
275 | ||
4c53bd2b | 276 | The lines are shown in a buffer named `*Occur*'. |
698e1804 RS |
277 | It serves as a menu to find any of the occurrences in this buffer. |
278 | \\[describe-mode] in that buffer will explain how." | |
4c53bd2b RS |
279 | (interactive (list (let* ((default (car regexp-history)) |
280 | (input | |
281 | (read-from-minibuffer | |
166aaf6f RS |
282 | (if default |
283 | (format "List lines matching regexp (default `%s'): " default) | |
284 | "List lines matching regexp: ") | |
4c53bd2b RS |
285 | nil nil nil |
286 | 'regexp-history))) | |
287 | (if (> (length input) 0) input | |
288 | (setcar regexp-history default))) | |
f1c9e147 | 289 | current-prefix-arg)) |
698e1804 RS |
290 | (setq nlines (if nlines (prefix-numeric-value nlines) |
291 | list-matching-lines-default-context-lines)) | |
292 | (let ((first t) | |
293 | (buffer (current-buffer)) | |
294 | (linenum 1) | |
79c2e52b JB |
295 | (prevpos (point-min)) |
296 | (final-context-start (make-marker))) | |
99976f85 RS |
297 | ;;; (save-excursion |
298 | ;;; (beginning-of-line) | |
299 | ;;; (setq linenum (1+ (count-lines (point-min) (point)))) | |
300 | ;;; (setq prevpos (point))) | |
698e1804 RS |
301 | (with-output-to-temp-buffer "*Occur*" |
302 | (save-excursion | |
303 | (set-buffer standard-output) | |
304 | (insert "Lines matching ") | |
305 | (prin1 regexp) | |
306 | (insert " in buffer " (buffer-name buffer) ?. ?\n) | |
307 | (occur-mode) | |
308 | (setq occur-buffer buffer) | |
309 | (setq occur-nlines nlines) | |
310 | (setq occur-pos-list ())) | |
311 | (if (eq buffer standard-output) | |
312 | (goto-char (point-max))) | |
313 | (save-excursion | |
99976f85 | 314 | (beginning-of-buffer) |
698e1804 RS |
315 | ;; Find next match, but give up if prev match was at end of buffer. |
316 | (while (and (not (= prevpos (point-max))) | |
317 | (re-search-forward regexp nil t)) | |
da44e784 | 318 | (goto-char (match-beginning 0)) |
698e1804 | 319 | (beginning-of-line) |
4c53bd2b RS |
320 | (save-match-data |
321 | (setq linenum (+ linenum (count-lines prevpos (point))))) | |
698e1804 | 322 | (setq prevpos (point)) |
da44e784 | 323 | (goto-char (match-end 0)) |
698e1804 | 324 | (let* ((start (save-excursion |
da44e784 | 325 | (goto-char (match-beginning 0)) |
698e1804 RS |
326 | (forward-line (if (< nlines 0) nlines (- nlines))) |
327 | (point))) | |
328 | (end (save-excursion | |
da44e784 | 329 | (goto-char (match-end 0)) |
698e1804 RS |
330 | (if (> nlines 0) |
331 | (forward-line (1+ nlines)) | |
332 | (forward-line 1)) | |
333 | (point))) | |
334 | (tag (format "%3d" linenum)) | |
335 | (empty (make-string (length tag) ?\ )) | |
336 | tem) | |
337 | (save-excursion | |
79c2e52b JB |
338 | (setq tem (make-marker)) |
339 | (set-marker tem (point)) | |
698e1804 RS |
340 | (set-buffer standard-output) |
341 | (setq occur-pos-list (cons tem occur-pos-list)) | |
342 | (or first (zerop nlines) | |
343 | (insert "--------\n")) | |
344 | (setq first nil) | |
345 | (insert-buffer-substring buffer start end) | |
346 | (backward-char (- end start)) | |
da44e784 | 347 | (setq tem nlines) |
698e1804 RS |
348 | (while (> tem 0) |
349 | (insert empty ?:) | |
350 | (forward-line 1) | |
351 | (setq tem (1- tem))) | |
79c2e52b | 352 | (let ((this-linenum linenum)) |
da44e784 RM |
353 | (set-marker final-context-start |
354 | (+ (point) (- (match-end 0) (match-beginning 0)))) | |
355 | (while (< (point) final-context-start) | |
356 | (if (null tag) | |
357 | (setq tag (format "%3d" this-linenum))) | |
358 | (insert tag ?:) | |
359 | (setq tag nil) | |
360 | (forward-line 1) | |
361 | (setq this-linenum (1+ this-linenum)))) | |
698e1804 RS |
362 | (while (< tem nlines) |
363 | (insert empty ?:) | |
364 | (forward-line 1) | |
365 | (setq tem (1+ tem)))) | |
366 | (forward-line 1))) | |
367 | (set-buffer standard-output) | |
368 | ;; Put positions in increasing order to go with buffer. | |
369 | (setq occur-pos-list (nreverse occur-pos-list)) | |
370 | (if (interactive-p) | |
371 | (message "%d matching lines." (length occur-pos-list))))))) | |
372 | \f | |
81bdc14d RS |
373 | ;; It would be nice to use \\[...], but there is no reasonable way |
374 | ;; to make that display both SPC and Y. | |
698e1804 RS |
375 | (defconst query-replace-help |
376 | "Type Space or `y' to replace one match, Delete or `n' to skip to next, | |
be44f62c | 377 | RET or `q' to exit, Period to replace one match and exit, |
698e1804 RS |
378 | Comma to replace but not move point immediately, |
379 | C-r to enter recursive edit (\\[exit-recursive-edit] to get out again), | |
380 | C-w to delete match and recursive edit, | |
381 | C-l to clear the screen, redisplay, and offer same replacement again, | |
382 | ! to replace all remaining matches with no more questions, | |
383 | ^ to move point back to previous match." | |
384 | "Help message while in query-replace") | |
385 | ||
81bdc14d RS |
386 | (defvar query-replace-map (make-sparse-keymap) |
387 | "Keymap that defines the responses to questions in `query-replace'. | |
388 | The \"bindings\" in this map are not commands; they are answers. | |
389 | The valid answers include `act', `skip', `act-and-show', | |
390 | `exit', `act-and-exit', `edit', `delete-and-edit', `recenter', | |
391 | `automatic', `backup', and `help'.") | |
392 | ||
393 | (define-key query-replace-map " " 'act) | |
394 | (define-key query-replace-map "\d" 'skip) | |
395 | (define-key query-replace-map [delete] 'skip) | |
9275e5e3 | 396 | (define-key query-replace-map [backspace] 'skip) |
81bdc14d RS |
397 | (define-key query-replace-map "y" 'act) |
398 | (define-key query-replace-map "n" 'skip) | |
399 | (define-key query-replace-map "," 'act-and-show) | |
81bdc14d | 400 | (define-key query-replace-map "q" 'exit) |
919592c0 | 401 | (define-key query-replace-map "\r" 'exit) |
384c7da4 | 402 | (define-key query-replace-map [return] 'exit) |
81bdc14d RS |
403 | (define-key query-replace-map "." 'act-and-exit) |
404 | (define-key query-replace-map "\C-r" 'edit) | |
405 | (define-key query-replace-map "\C-w" 'delete-and-edit) | |
406 | (define-key query-replace-map "\C-l" 'recenter) | |
407 | (define-key query-replace-map "!" 'automatic) | |
408 | (define-key query-replace-map "^" 'backup) | |
409 | (define-key query-replace-map "\C-h" 'help) | |
410 | (define-key query-replace-map "?" 'help) | |
bc6312e1 RS |
411 | (define-key query-replace-map "\C-g" 'quit) |
412 | (define-key query-replace-map "\C-]" 'quit) | |
81bdc14d | 413 | |
698e1804 RS |
414 | (defun perform-replace (from-string replacements |
415 | query-flag regexp-flag delimited-flag | |
81bdc14d | 416 | &optional repeat-count map) |
698e1804 RS |
417 | "Subroutine of `query-replace'. Its complexity handles interactive queries. |
418 | Don't use this in your own program unless you want to query and set the mark | |
419 | just as `query-replace' does. Instead, write a simple loop like this: | |
420 | (while (re-search-forward \"foo[ \t]+bar\" nil t) | |
421 | (replace-match \"foobar\" nil nil)) | |
e782e9f2 | 422 | which will run faster and probably do exactly what you want." |
81bdc14d | 423 | (or map (setq map query-replace-map)) |
698e1804 RS |
424 | (let ((nocasify (not (and case-fold-search case-replace |
425 | (string-equal from-string | |
426 | (downcase from-string))))) | |
427 | (literal (not regexp-flag)) | |
428 | (search-function (if regexp-flag 're-search-forward 'search-forward)) | |
429 | (search-string from-string) | |
e5d77022 | 430 | (real-match-data nil) ; the match data for the current match |
698e1804 RS |
431 | (next-replacement nil) |
432 | (replacement-index 0) | |
433 | (keep-going t) | |
434 | (stack nil) | |
435 | (next-rotate-count 0) | |
436 | (replace-count 0) | |
da44e784 | 437 | (lastrepl nil) ;Position after last match considered. |
ba343182 | 438 | (match-again t)) |
698e1804 RS |
439 | (if (stringp replacements) |
440 | (setq next-replacement replacements) | |
441 | (or repeat-count (setq repeat-count 1))) | |
442 | (if delimited-flag | |
443 | (setq search-function 're-search-forward | |
444 | search-string (concat "\\b" | |
445 | (if regexp-flag from-string | |
446 | (regexp-quote from-string)) | |
447 | "\\b"))) | |
448 | (push-mark) | |
449 | (undo-boundary) | |
e782e9f2 RS |
450 | (unwind-protect |
451 | ;; Loop finding occurrences that perhaps should be replaced. | |
452 | (while (and keep-going | |
453 | (not (eobp)) | |
454 | (funcall search-function search-string nil t) | |
455 | ;; If the search string matches immediately after | |
456 | ;; the previous match, but it did not match there | |
457 | ;; before the replacement was done, ignore the match. | |
458 | (if (or (eq lastrepl (point)) | |
459 | (and regexp-flag | |
460 | (eq lastrepl (match-beginning 0)) | |
461 | (not match-again))) | |
462 | (if (eobp) | |
463 | nil | |
464 | ;; Don't replace the null string | |
465 | ;; right after end of previous replacement. | |
466 | (forward-char 1) | |
467 | (funcall search-function search-string nil t)) | |
468 | t)) | |
469 | ||
470 | ;; Save the data associated with the real match. | |
471 | (setq real-match-data (match-data)) | |
472 | ||
473 | ;; Before we make the replacement, decide whether the search string | |
474 | ;; can match again just after this match. | |
475 | (if regexp-flag | |
476 | (setq match-again (looking-at search-string))) | |
477 | ;; If time for a change, advance to next replacement string. | |
478 | (if (and (listp replacements) | |
479 | (= next-rotate-count replace-count)) | |
480 | (progn | |
481 | (setq next-rotate-count | |
482 | (+ next-rotate-count repeat-count)) | |
483 | (setq next-replacement (nth replacement-index replacements)) | |
484 | (setq replacement-index (% (1+ replacement-index) (length replacements))))) | |
485 | (if (not query-flag) | |
486 | (progn | |
487 | (store-match-data real-match-data) | |
488 | (replace-match next-replacement nocasify literal) | |
489 | (setq replace-count (1+ replace-count))) | |
490 | (undo-boundary) | |
491 | (let (done replaced key def) | |
492 | ;; Loop reading commands until one of them sets done, | |
493 | ;; which means it has finished handling this occurrence. | |
494 | (while (not done) | |
495 | (replace-highlight (match-beginning 0) (match-end 0)) | |
496 | (message (substitute-command-keys | |
497 | "Query replacing %s with %s: (\\<query-replace-map>\\[help] for help) ") | |
498 | from-string next-replacement) | |
499 | (setq key (read-event)) | |
500 | (setq key (vector key)) | |
501 | (setq def (lookup-key map key)) | |
502 | ;; Restore the match data while we process the command. | |
503 | (store-match-data real-match-data) | |
504 | (cond ((eq def 'help) | |
505 | (with-output-to-temp-buffer "*Help*" | |
506 | (princ | |
507 | (concat "Query replacing " | |
508 | (if regexp-flag "regexp " "") | |
509 | from-string " with " | |
510 | next-replacement ".\n\n" | |
511 | (substitute-command-keys | |
512 | query-replace-help))))) | |
513 | ((eq def 'exit) | |
514 | (setq keep-going nil) | |
515 | (setq done t)) | |
516 | ((eq def 'backup) | |
237e6ab0 KH |
517 | (if stack |
518 | (let ((elt (car stack))) | |
519 | (goto-char (car elt)) | |
520 | (setq replaced (eq t (cdr elt))) | |
521 | (or replaced | |
522 | (store-match-data (cdr elt))) | |
523 | (setq stack (cdr stack))) | |
524 | (message "No previous match") | |
525 | (ding 'no-terminate) | |
526 | (sit-for 1))) | |
e782e9f2 RS |
527 | ((eq def 'act) |
528 | (or replaced | |
529 | (replace-match next-replacement nocasify literal)) | |
530 | (setq done t replaced t)) | |
531 | ((eq def 'act-and-exit) | |
532 | (or replaced | |
533 | (replace-match next-replacement nocasify literal)) | |
534 | (setq keep-going nil) | |
535 | (setq done t replaced t)) | |
536 | ((eq def 'act-and-show) | |
537 | (if (not replaced) | |
538 | (progn | |
539 | (replace-match next-replacement nocasify literal) | |
540 | (setq replaced t)))) | |
541 | ((eq def 'automatic) | |
542 | (or replaced | |
543 | (replace-match next-replacement nocasify literal)) | |
544 | (setq done t query-flag nil replaced t)) | |
545 | ((eq def 'skip) | |
546 | (setq done t)) | |
547 | ((eq def 'recenter) | |
548 | (recenter nil)) | |
549 | ((eq def 'edit) | |
550 | (store-match-data | |
551 | (prog1 (match-data) | |
552 | (save-excursion (recursive-edit)))) | |
553 | ;; Before we make the replacement, | |
554 | ;; decide whether the search string | |
555 | ;; can match again just after this match. | |
556 | (if regexp-flag | |
557 | (setq match-again (looking-at search-string)))) | |
558 | ((eq def 'delete-and-edit) | |
559 | (delete-region (match-beginning 0) (match-end 0)) | |
560 | (store-match-data | |
561 | (prog1 (match-data) | |
562 | (save-excursion (recursive-edit)))) | |
563 | (setq replaced t)) | |
564 | (t | |
565 | (setq keep-going nil) | |
566 | (setq unread-command-events | |
567 | (append (listify-key-sequence key) | |
568 | unread-command-events)) | |
569 | (setq done t)))) | |
570 | ;; Record previous position for ^ when we move on. | |
571 | ;; Change markers to numbers in the match data | |
572 | ;; since lots of markers slow down editing. | |
573 | (setq stack | |
574 | (cons (cons (point) | |
575 | (or replaced | |
576 | (mapcar | |
577 | (function (lambda (elt) | |
578 | (and elt | |
579 | (marker-position elt)))) | |
580 | (match-data)))) | |
581 | stack)) | |
582 | (if replaced (setq replace-count (1+ replace-count))))) | |
583 | (setq lastrepl (point))) | |
584 | (replace-dehighlight)) | |
81bdc14d | 585 | (and keep-going stack))) |
698e1804 | 586 | |
e782e9f2 RS |
587 | (defvar query-replace-highlight nil |
588 | "*Non-nil means to highlight words during query replacement.") | |
589 | ||
590 | (defvar replace-overlay nil) | |
591 | ||
592 | (defun replace-dehighlight () | |
593 | (and replace-overlay | |
594 | (progn | |
595 | (delete-overlay replace-overlay) | |
596 | (setq replace-overlay nil)))) | |
597 | ||
598 | (defun replace-highlight (start end) | |
599 | (and query-replace-highlight | |
600 | (progn | |
601 | (or replace-overlay | |
602 | (progn | |
603 | (setq replace-overlay (make-overlay start end)) | |
604 | (overlay-put replace-overlay 'face | |
605 | (if (internal-find-face 'query-replace) | |
606 | 'query-replace 'region)))) | |
607 | (move-overlay replace-overlay start end (current-buffer))))) | |
608 | ||
c88ab9ce | 609 | ;;; replace.el ends here |