Commit | Line | Data |
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b45433b3 | 1 | /* Buffer insertion/deletion and gap motion for GNU Emacs. |
73b0cd50 | 2 | Copyright (C) 1985-1986, 1993-1995, 1997-2011 |
8cabe764 | 3 | Free Software Foundation, Inc. |
b45433b3 JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
9ec0b715 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
b45433b3 | 8 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
b45433b3 JB |
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 | |
9ec0b715 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
b45433b3 JB |
19 | |
20 | ||
18160b98 | 21 | #include <config.h> |
d7306fe6 | 22 | #include <setjmp.h> |
b45433b3 | 23 | #include "lisp.h" |
679194a6 | 24 | #include "intervals.h" |
b45433b3 | 25 | #include "buffer.h" |
811f7370 | 26 | #include "character.h" |
b45433b3 | 27 | #include "window.h" |
d014bf88 | 28 | #include "blockinput.h" |
dfcf069d | 29 | #include "region-cache.h" |
b45433b3 | 30 | |
d206af14 RS |
31 | #ifndef NULL |
32 | #define NULL 0 | |
33 | #endif | |
34 | ||
ae19ba7c SM |
35 | static void insert_from_string_1 (Lisp_Object string, |
36 | EMACS_INT pos, EMACS_INT pos_byte, | |
37 | EMACS_INT nchars, EMACS_INT nbytes, | |
38 | int inherit, int before_markers); | |
39 | static void insert_from_buffer_1 (struct buffer *buf, | |
40 | EMACS_INT from, EMACS_INT nchars, | |
41 | int inherit); | |
42 | static void gap_left (EMACS_INT charpos, EMACS_INT bytepos, int newgap); | |
43 | static void gap_right (EMACS_INT charpos, EMACS_INT bytepos); | |
ae19ba7c SM |
44 | static void adjust_markers_for_insert (EMACS_INT from, EMACS_INT from_byte, |
45 | EMACS_INT to, EMACS_INT to_byte, | |
46 | int before_markers); | |
47 | static void adjust_markers_for_replace (EMACS_INT, EMACS_INT, EMACS_INT, | |
48 | EMACS_INT, EMACS_INT, EMACS_INT); | |
49 | static void adjust_point (EMACS_INT nchars, EMACS_INT nbytes); | |
395ec62e | 50 | |
cd64ea1d | 51 | static Lisp_Object Fcombine_after_change_execute (void); |
fb2e7d14 | 52 | |
fb2e7d14 RS |
53 | /* List of elements of the form (BEG-UNCHANGED END-UNCHANGED CHANGE-AMOUNT) |
54 | describing changes which happened while combine_after_change_calls | |
55 | was nonzero. We use this to decide how to call them | |
56 | once the deferral ends. | |
57 | ||
58 | In each element. | |
59 | BEG-UNCHANGED is the number of chars before the changed range. | |
60 | END-UNCHANGED is the number of chars after the changed range, | |
61 | and CHANGE-AMOUNT is the number of characters inserted by the change | |
62 | (negative for a deletion). */ | |
77382fcc | 63 | static Lisp_Object combine_after_change_list; |
fb2e7d14 RS |
64 | |
65 | /* Buffer which combine_after_change_list is about. */ | |
77382fcc | 66 | static Lisp_Object combine_after_change_buffer; |
27ea0af2 GM |
67 | |
68 | Lisp_Object Qinhibit_modification_hooks; | |
4889fc82 PE |
69 | |
70 | static void signal_before_change (EMACS_INT, EMACS_INT, EMACS_INT *); | |
2b083808 | 71 | \f |
60ea6052 | 72 | #define CHECK_MARKERS() \ |
f0cb4a60 PE |
73 | do \ |
74 | { \ | |
75 | if (check_markers_debug_flag) \ | |
76 | check_markers (); \ | |
77 | } \ | |
78 | while (0) | |
60ea6052 | 79 | |
85876d07 | 80 | static void |
971de7fb | 81 | check_markers (void) |
60ea6052 | 82 | { |
dab0b04d | 83 | register struct Lisp_Marker *tail; |
4b4deea2 | 84 | int multibyte = ! NILP (BVAR (current_buffer, enable_multibyte_characters)); |
60ea6052 | 85 | |
dab0b04d | 86 | for (tail = BUF_MARKERS (current_buffer); tail; tail = tail->next) |
60ea6052 | 87 | { |
dab0b04d | 88 | if (tail->buffer->text != current_buffer->text) |
60ea6052 | 89 | abort (); |
dab0b04d | 90 | if (tail->charpos > Z) |
60ea6052 | 91 | abort (); |
dab0b04d | 92 | if (tail->bytepos > Z_BYTE) |
60ea6052 | 93 | abort (); |
dab0b04d | 94 | if (multibyte && ! CHAR_HEAD_P (FETCH_BYTE (tail->bytepos))) |
9f3ede3c | 95 | abort (); |
60ea6052 RS |
96 | } |
97 | } | |
98 | \f | |
3be11131 | 99 | /* Move gap to position CHARPOS. |
b45433b3 JB |
100 | Note that this can quit! */ |
101 | ||
c660b094 | 102 | void |
ae19ba7c | 103 | move_gap (EMACS_INT charpos) |
b45433b3 | 104 | { |
3be11131 | 105 | move_gap_both (charpos, charpos_to_bytepos (charpos)); |
b45433b3 JB |
106 | } |
107 | ||
3be11131 RS |
108 | /* Move gap to byte position BYTEPOS, which is also char position CHARPOS. |
109 | Note that this can quit! */ | |
110 | ||
111 | void | |
ae19ba7c | 112 | move_gap_both (EMACS_INT charpos, EMACS_INT bytepos) |
3be11131 RS |
113 | { |
114 | if (bytepos < GPT_BYTE) | |
115 | gap_left (charpos, bytepos, 0); | |
116 | else if (bytepos > GPT_BYTE) | |
117 | gap_right (charpos, bytepos); | |
118 | } | |
119 | ||
120 | /* Move the gap to a position less than the current GPT. | |
121 | BYTEPOS describes the new position as a byte position, | |
122 | and CHARPOS is the corresponding char position. | |
b45433b3 JB |
123 | If NEWGAP is nonzero, then don't update beg_unchanged and end_unchanged. */ |
124 | ||
2bcaed71 | 125 | static void |
ae19ba7c | 126 | gap_left (EMACS_INT charpos, EMACS_INT bytepos, int newgap) |
b45433b3 JB |
127 | { |
128 | register unsigned char *to, *from; | |
ae19ba7c SM |
129 | register EMACS_INT i; |
130 | EMACS_INT new_s1; | |
b45433b3 | 131 | |
b45433b3 | 132 | if (!newgap) |
a50df55b | 133 | BUF_COMPUTE_UNCHANGED (current_buffer, charpos, GPT); |
b45433b3 | 134 | |
3be11131 | 135 | i = GPT_BYTE; |
b45433b3 JB |
136 | to = GAP_END_ADDR; |
137 | from = GPT_ADDR; | |
3be11131 | 138 | new_s1 = GPT_BYTE; |
b45433b3 JB |
139 | |
140 | /* Now copy the characters. To move the gap down, | |
141 | copy characters up. */ | |
142 | ||
143 | while (1) | |
144 | { | |
145 | /* I gets number of characters left to copy. */ | |
3be11131 | 146 | i = new_s1 - bytepos; |
b45433b3 JB |
147 | if (i == 0) |
148 | break; | |
149 | /* If a quit is requested, stop copying now. | |
3be11131 | 150 | Change BYTEPOS to be where we have actually moved the gap to. */ |
b45433b3 JB |
151 | if (QUITP) |
152 | { | |
3be11131 RS |
153 | bytepos = new_s1; |
154 | charpos = BYTE_TO_CHAR (bytepos); | |
b45433b3 JB |
155 | break; |
156 | } | |
157 | /* Move at most 32000 chars before checking again for a quit. */ | |
158 | if (i > 32000) | |
159 | i = 32000; | |
72af86bd AS |
160 | new_s1 -= i; |
161 | from -= i, to -= i; | |
162 | memmove (to, from, i); | |
b45433b3 JB |
163 | } |
164 | ||
f868cd8a JB |
165 | /* Adjust buffer data structure, to put the gap at BYTEPOS. |
166 | BYTEPOS is where the loop above stopped, which may be what | |
167 | was specified or may be where a quit was detected. */ | |
3be11131 RS |
168 | GPT_BYTE = bytepos; |
169 | GPT = charpos; | |
170 | if (bytepos < charpos) | |
171 | abort (); | |
469ff680 | 172 | if (GAP_SIZE > 0) *(GPT_ADDR) = 0; /* Put an anchor. */ |
b45433b3 JB |
173 | QUIT; |
174 | } | |
175 | ||
2b34df4e | 176 | /* Move the gap to a position greater than the current GPT. |
3be11131 RS |
177 | BYTEPOS describes the new position as a byte position, |
178 | and CHARPOS is the corresponding char position. */ | |
179 | ||
2bcaed71 | 180 | static void |
ae19ba7c | 181 | gap_right (EMACS_INT charpos, EMACS_INT bytepos) |
b45433b3 JB |
182 | { |
183 | register unsigned char *to, *from; | |
ae19ba7c SM |
184 | register EMACS_INT i; |
185 | EMACS_INT new_s1; | |
b45433b3 | 186 | |
a50df55b | 187 | BUF_COMPUTE_UNCHANGED (current_buffer, charpos, GPT); |
b45433b3 | 188 | |
3be11131 | 189 | i = GPT_BYTE; |
b45433b3 JB |
190 | from = GAP_END_ADDR; |
191 | to = GPT_ADDR; | |
3be11131 | 192 | new_s1 = GPT_BYTE; |
b45433b3 JB |
193 | |
194 | /* Now copy the characters. To move the gap up, | |
195 | copy characters down. */ | |
196 | ||
197 | while (1) | |
198 | { | |
199 | /* I gets number of characters left to copy. */ | |
3be11131 | 200 | i = bytepos - new_s1; |
b45433b3 JB |
201 | if (i == 0) |
202 | break; | |
203 | /* If a quit is requested, stop copying now. | |
3be11131 | 204 | Change BYTEPOS to be where we have actually moved the gap to. */ |
b45433b3 JB |
205 | if (QUITP) |
206 | { | |
3be11131 RS |
207 | bytepos = new_s1; |
208 | charpos = BYTE_TO_CHAR (bytepos); | |
b45433b3 JB |
209 | break; |
210 | } | |
211 | /* Move at most 32000 chars before checking again for a quit. */ | |
212 | if (i > 32000) | |
213 | i = 32000; | |
72af86bd AS |
214 | new_s1 += i; |
215 | memmove (to, from, i); | |
216 | from += i, to += i; | |
b45433b3 JB |
217 | } |
218 | ||
3be11131 RS |
219 | GPT = charpos; |
220 | GPT_BYTE = bytepos; | |
221 | if (bytepos < charpos) | |
222 | abort (); | |
469ff680 | 223 | if (GAP_SIZE > 0) *(GPT_ADDR) = 0; /* Put an anchor. */ |
b45433b3 JB |
224 | QUIT; |
225 | } | |
2b083808 | 226 | \f |
3be11131 RS |
227 | /* Adjust all markers for a deletion |
228 | whose range in bytes is FROM_BYTE to TO_BYTE. | |
229 | The range in charpos is FROM to TO. | |
230 | ||
231 | This function assumes that the gap is adjacent to | |
232 | or inside of the range being deleted. */ | |
beecb55b | 233 | |
809f3d51 | 234 | void |
ae19ba7c SM |
235 | adjust_markers_for_delete (EMACS_INT from, EMACS_INT from_byte, |
236 | EMACS_INT to, EMACS_INT to_byte) | |
3be11131 RS |
237 | { |
238 | Lisp_Object marker; | |
239 | register struct Lisp_Marker *m; | |
ae19ba7c | 240 | register EMACS_INT charpos; |
3be11131 | 241 | |
dab0b04d | 242 | for (m = BUF_MARKERS (current_buffer); m; m = m->next) |
3be11131 | 243 | { |
3be11131 RS |
244 | charpos = m->charpos; |
245 | ||
246 | if (charpos > Z) | |
247 | abort (); | |
248 | ||
249 | /* If the marker is after the deletion, | |
80f6e77c | 250 | relocate by number of chars / bytes deleted. */ |
3be11131 | 251 | if (charpos > to) |
80f6e77c RS |
252 | { |
253 | m->charpos -= to - from; | |
254 | m->bytepos -= to_byte - from_byte; | |
255 | } | |
80f6e77c | 256 | /* Here's the case where a marker is inside text being deleted. */ |
3be11131 RS |
257 | else if (charpos > from) |
258 | { | |
00de2987 | 259 | if (! m->insertion_type) |
dab0b04d | 260 | { /* Normal markers will end up at the beginning of the |
00de2987 | 261 | re-inserted text after undoing a deletion, and must be |
177c0ea7 | 262 | adjusted to move them to the correct place. */ |
dab0b04d | 263 | XSETMISC (marker, m); |
28259cac | 264 | record_marker_adjustment (marker, from - charpos); |
dab0b04d | 265 | } |
00de2987 | 266 | else if (charpos < to) |
dab0b04d | 267 | { /* Before-insertion markers will automatically move forward |
00de2987 MB |
268 | upon re-inserting the deleted text, so we have to arrange |
269 | for them to move backward to the correct position. */ | |
dab0b04d | 270 | XSETMISC (marker, m); |
28259cac | 271 | record_marker_adjustment (marker, to - charpos); |
dab0b04d | 272 | } |
3be11131 | 273 | m->charpos = from; |
80f6e77c | 274 | m->bytepos = from_byte; |
3be11131 | 275 | } |
00de2987 MB |
276 | /* Here's the case where a before-insertion marker is immediately |
277 | before the deleted region. */ | |
278 | else if (charpos == from && m->insertion_type) | |
279 | { | |
280 | /* Undoing the change uses normal insertion, which will | |
281 | incorrectly make MARKER move forward, so we arrange for it | |
282 | to then move backward to the correct place at the beginning | |
283 | of the deleted region. */ | |
dab0b04d | 284 | XSETMISC (marker, m); |
00de2987 MB |
285 | record_marker_adjustment (marker, to - from); |
286 | } | |
3be11131 RS |
287 | } |
288 | } | |
23b20a70 | 289 | |
2b083808 | 290 | \f |
432f78d2 RS |
291 | /* Adjust markers for an insertion that stretches from FROM / FROM_BYTE |
292 | to TO / TO_BYTE. We have to relocate the charpos of every marker | |
293 | that points after the insertion (but not their bytepos). | |
3be11131 | 294 | |
3be11131 RS |
295 | When a marker points at the insertion point, |
296 | we advance it if either its insertion-type is t | |
297 | or BEFORE_MARKERS is true. */ | |
298 | ||
299 | static void | |
ae19ba7c SM |
300 | adjust_markers_for_insert (EMACS_INT from, EMACS_INT from_byte, |
301 | EMACS_INT to, EMACS_INT to_byte, int before_markers) | |
beecb55b | 302 | { |
dab0b04d | 303 | struct Lisp_Marker *m; |
469ff680 | 304 | int adjusted = 0; |
ae19ba7c SM |
305 | EMACS_INT nchars = to - from; |
306 | EMACS_INT nbytes = to_byte - from_byte; | |
beecb55b | 307 | |
dab0b04d | 308 | for (m = BUF_MARKERS (current_buffer); m; m = m->next) |
beecb55b | 309 | { |
86a56ef3 SM |
310 | eassert (m->bytepos >= m->charpos |
311 | && m->bytepos - m->charpos <= Z_BYTE - Z); | |
1f90a790 | 312 | |
432f78d2 | 313 | if (m->bytepos == from_byte) |
469ff680 | 314 | { |
432f78d2 RS |
315 | if (m->insertion_type || before_markers) |
316 | { | |
b16afa45 KH |
317 | m->bytepos = to_byte; |
318 | m->charpos = to; | |
432f78d2 RS |
319 | if (m->insertion_type) |
320 | adjusted = 1; | |
321 | } | |
ce97a2d7 | 322 | } |
80f6e77c RS |
323 | else if (m->bytepos > from_byte) |
324 | { | |
325 | m->bytepos += nbytes; | |
b16afa45 | 326 | m->charpos += nchars; |
80f6e77c | 327 | } |
beecb55b | 328 | } |
3be11131 RS |
329 | |
330 | /* Adjusting only markers whose insertion-type is t may result in | |
409f2919 | 331 | - disordered start and end in overlays, and |
6b61353c | 332 | - disordered overlays in the slot `overlays_before' of current_buffer. */ |
469ff680 | 333 | if (adjusted) |
6b61353c KH |
334 | { |
335 | fix_start_end_in_overlays(from, to); | |
336 | fix_overlays_before (current_buffer, from, to); | |
337 | } | |
beecb55b RS |
338 | } |
339 | ||
3be11131 RS |
340 | /* Adjust point for an insertion of NBYTES bytes, which are NCHARS characters. |
341 | ||
342 | This is used only when the value of point changes due to an insert | |
343 | or delete; it does not represent a conceptual change in point as a | |
344 | marker. In particular, point is not crossing any interval | |
345 | boundaries, so there's no need to use the usual SET_PT macro. In | |
346 | fact it would be incorrect to do so, because either the old or the | |
347 | new value of point is out of sync with the current set of | |
348 | intervals. */ | |
349 | ||
a27a38d8 | 350 | static void |
ae19ba7c | 351 | adjust_point (EMACS_INT nchars, EMACS_INT nbytes) |
a27a38d8 | 352 | { |
cffc6f3b | 353 | SET_BUF_PT_BOTH (current_buffer, PT + nchars, PT_BYTE + nbytes); |
3be11131 | 354 | /* In a single-byte buffer, the two positions must be equal. */ |
86a56ef3 | 355 | eassert (PT_BYTE >= PT && PT_BYTE - PT <= ZV_BYTE - ZV); |
a27a38d8 | 356 | } |
b45433b3 | 357 | \f |
652838b5 KH |
358 | /* Adjust markers for a replacement of a text at FROM (FROM_BYTE) of |
359 | length OLD_CHARS (OLD_BYTES) to a new text of length NEW_CHARS | |
adee4f91 KH |
360 | (NEW_BYTES). It is assumed that OLD_CHARS > 0, i.e., this is not |
361 | an insertion. */ | |
652838b5 KH |
362 | |
363 | static void | |
ae19ba7c SM |
364 | adjust_markers_for_replace (EMACS_INT from, EMACS_INT from_byte, |
365 | EMACS_INT old_chars, EMACS_INT old_bytes, | |
366 | EMACS_INT new_chars, EMACS_INT new_bytes) | |
652838b5 | 367 | { |
dab0b04d | 368 | register struct Lisp_Marker *m; |
ae19ba7c SM |
369 | EMACS_INT prev_to_byte = from_byte + old_bytes; |
370 | EMACS_INT diff_chars = new_chars - old_chars; | |
371 | EMACS_INT diff_bytes = new_bytes - old_bytes; | |
652838b5 | 372 | |
dab0b04d | 373 | for (m = BUF_MARKERS (current_buffer); m; m = m->next) |
652838b5 | 374 | { |
adee4f91 | 375 | if (m->bytepos >= prev_to_byte) |
652838b5 | 376 | { |
adee4f91 KH |
377 | m->charpos += diff_chars; |
378 | m->bytepos += diff_bytes; | |
652838b5 | 379 | } |
adee4f91 | 380 | else if (m->bytepos > from_byte) |
652838b5 | 381 | { |
652838b5 | 382 | m->charpos = from; |
b16afa45 | 383 | m->bytepos = from_byte; |
652838b5 | 384 | } |
652838b5 | 385 | } |
3019692c KH |
386 | |
387 | CHECK_MARKERS (); | |
652838b5 KH |
388 | } |
389 | ||
390 | \f | |
3be11131 | 391 | /* Make the gap NBYTES_ADDED bytes longer. */ |
b45433b3 | 392 | |
85876d07 | 393 | static void |
ae19ba7c | 394 | make_gap_larger (EMACS_INT nbytes_added) |
b45433b3 | 395 | { |
b45433b3 | 396 | Lisp_Object tem; |
ae19ba7c SM |
397 | EMACS_INT real_gap_loc; |
398 | EMACS_INT real_gap_loc_byte; | |
399 | EMACS_INT old_gap_size; | |
b45433b3 JB |
400 | |
401 | /* If we have to get more space, get enough to last a while. */ | |
3be11131 | 402 | nbytes_added += 2000; |
b45433b3 | 403 | |
87e32266 SM |
404 | { EMACS_INT total_size = Z_BYTE - BEG_BYTE + GAP_SIZE + nbytes_added; |
405 | if (total_size < 0 | |
406 | /* Don't allow a buffer size that won't fit in a Lisp integer. */ | |
407 | || total_size != XINT (make_number (total_size)) | |
408 | /* Don't allow a buffer size that won't fit in an int | |
409 | even if it will fit in a Lisp integer. | |
410 | That won't work because so many places still use `int'. */ | |
411 | || total_size != (EMACS_INT) (int) total_size) | |
412 | error ("Buffer exceeds maximum size"); | |
413 | } | |
94056516 | 414 | |
71a7bfa7 | 415 | enlarge_buffer_text (current_buffer, nbytes_added); |
b45433b3 JB |
416 | |
417 | /* Prevent quitting in move_gap. */ | |
418 | tem = Vinhibit_quit; | |
419 | Vinhibit_quit = Qt; | |
420 | ||
421 | real_gap_loc = GPT; | |
3be11131 | 422 | real_gap_loc_byte = GPT_BYTE; |
b45433b3 JB |
423 | old_gap_size = GAP_SIZE; |
424 | ||
425 | /* Call the newly allocated space a gap at the end of the whole space. */ | |
426 | GPT = Z + GAP_SIZE; | |
7d92db58 | 427 | GPT_BYTE = Z_BYTE + GAP_SIZE; |
3be11131 | 428 | GAP_SIZE = nbytes_added; |
b45433b3 JB |
429 | |
430 | /* Move the new gap down to be consecutive with the end of the old one. | |
431 | This adjusts the markers properly too. */ | |
3be11131 | 432 | gap_left (real_gap_loc + old_gap_size, real_gap_loc_byte + old_gap_size, 1); |
b45433b3 JB |
433 | |
434 | /* Now combine the two into one large gap. */ | |
435 | GAP_SIZE += old_gap_size; | |
436 | GPT = real_gap_loc; | |
3be11131 | 437 | GPT_BYTE = real_gap_loc_byte; |
b45433b3 | 438 | |
469ff680 KH |
439 | /* Put an anchor. */ |
440 | *(Z_ADDR) = 0; | |
441 | ||
b45433b3 JB |
442 | Vinhibit_quit = tem; |
443 | } | |
8af5b8e7 | 444 | |
b58c5c4a | 445 | #if defined USE_MMAP_FOR_BUFFERS || defined REL_ALLOC || defined DOUG_LEA_MALLOC |
8af5b8e7 | 446 | |
7273faa1 | 447 | /* Make the gap NBYTES_REMOVED bytes shorter. */ |
8af5b8e7 | 448 | |
85876d07 | 449 | static void |
ae19ba7c | 450 | make_gap_smaller (EMACS_INT nbytes_removed) |
8af5b8e7 AI |
451 | { |
452 | Lisp_Object tem; | |
ae19ba7c SM |
453 | EMACS_INT real_gap_loc; |
454 | EMACS_INT real_gap_loc_byte; | |
455 | EMACS_INT real_Z; | |
456 | EMACS_INT real_Z_byte; | |
457 | EMACS_INT real_beg_unchanged; | |
458 | EMACS_INT new_gap_size; | |
8af5b8e7 AI |
459 | |
460 | /* Make sure the gap is at least 20 bytes. */ | |
461 | if (GAP_SIZE - nbytes_removed < 20) | |
462 | nbytes_removed = GAP_SIZE - 20; | |
463 | ||
464 | /* Prevent quitting in move_gap. */ | |
465 | tem = Vinhibit_quit; | |
466 | Vinhibit_quit = Qt; | |
467 | ||
468 | real_gap_loc = GPT; | |
469 | real_gap_loc_byte = GPT_BYTE; | |
73df3b72 | 470 | new_gap_size = GAP_SIZE - nbytes_removed; |
8af5b8e7 AI |
471 | real_Z = Z; |
472 | real_Z_byte = Z_BYTE; | |
73df3b72 | 473 | real_beg_unchanged = BEG_UNCHANGED; |
8af5b8e7 AI |
474 | |
475 | /* Pretend that the last unwanted part of the gap is the entire gap, | |
476 | and that the first desired part of the gap is part of the buffer | |
477 | text. */ | |
72af86bd | 478 | memset (GPT_ADDR, 0, new_gap_size); |
73df3b72 KS |
479 | GPT += new_gap_size; |
480 | GPT_BYTE += new_gap_size; | |
481 | Z += new_gap_size; | |
482 | Z_BYTE += new_gap_size; | |
8af5b8e7 AI |
483 | GAP_SIZE = nbytes_removed; |
484 | ||
485 | /* Move the unwanted pretend gap to the end of the buffer. This | |
486 | adjusts the markers properly too. */ | |
487 | gap_right (Z, Z_BYTE); | |
488 | ||
489 | enlarge_buffer_text (current_buffer, -nbytes_removed); | |
490 | ||
491 | /* Now restore the desired gap. */ | |
73df3b72 | 492 | GAP_SIZE = new_gap_size; |
8af5b8e7 AI |
493 | GPT = real_gap_loc; |
494 | GPT_BYTE = real_gap_loc_byte; | |
495 | Z = real_Z; | |
496 | Z_BYTE = real_Z_byte; | |
73df3b72 | 497 | BEG_UNCHANGED = real_beg_unchanged; |
8af5b8e7 AI |
498 | |
499 | /* Put an anchor. */ | |
500 | *(Z_ADDR) = 0; | |
501 | ||
502 | Vinhibit_quit = tem; | |
503 | } | |
504 | ||
b58c5c4a PE |
505 | #endif /* USE_MMAP_FOR_BUFFERS || REL_ALLOC || DOUG_LEA_MALLOC */ |
506 | ||
8af5b8e7 | 507 | void |
ae19ba7c | 508 | make_gap (EMACS_INT nbytes_added) |
8af5b8e7 AI |
509 | { |
510 | if (nbytes_added >= 0) | |
511 | make_gap_larger (nbytes_added); | |
d77fbc16 | 512 | #if defined USE_MMAP_FOR_BUFFERS || defined REL_ALLOC || defined DOUG_LEA_MALLOC |
8af5b8e7 AI |
513 | else |
514 | make_gap_smaller (-nbytes_added); | |
515 | #endif | |
516 | } | |
b45433b3 | 517 | \f |
2b083808 RS |
518 | /* Copy NBYTES bytes of text from FROM_ADDR to TO_ADDR. |
519 | FROM_MULTIBYTE says whether the incoming text is multibyte. | |
520 | TO_MULTIBYTE says whether to store the text as multibyte. | |
521 | If FROM_MULTIBYTE != TO_MULTIBYTE, we convert. | |
522 | ||
523 | Return the number of bytes stored at TO_ADDR. */ | |
524 | ||
ae19ba7c SM |
525 | EMACS_INT |
526 | copy_text (const unsigned char *from_addr, unsigned char *to_addr, | |
527 | EMACS_INT nbytes, int from_multibyte, int to_multibyte) | |
2b083808 RS |
528 | { |
529 | if (from_multibyte == to_multibyte) | |
530 | { | |
72af86bd | 531 | memcpy (to_addr, from_addr, nbytes); |
2b083808 RS |
532 | return nbytes; |
533 | } | |
534 | else if (from_multibyte) | |
535 | { | |
ae19ba7c SM |
536 | EMACS_INT nchars = 0; |
537 | EMACS_INT bytes_left = nbytes; | |
f44cbcd8 | 538 | |
2b083808 RS |
539 | while (bytes_left > 0) |
540 | { | |
b16afa45 | 541 | int thislen, c; |
62a6e103 | 542 | c = STRING_CHAR_AND_LENGTH (from_addr, thislen); |
1ede3eb6 KH |
543 | if (! ASCII_CHAR_P (c)) |
544 | c &= 0xFF; | |
f44cbcd8 | 545 | *to_addr++ = c; |
2b083808 | 546 | from_addr += thislen; |
7e79b8e0 | 547 | bytes_left -= thislen; |
2b083808 RS |
548 | nchars++; |
549 | } | |
550 | return nchars; | |
551 | } | |
552 | else | |
553 | { | |
554 | unsigned char *initial_to_addr = to_addr; | |
555 | ||
556 | /* Convert single-byte to multibyte. */ | |
557 | while (nbytes > 0) | |
558 | { | |
559 | int c = *from_addr++; | |
2b083808 | 560 | |
4c0354d7 | 561 | if (!ASCII_CHAR_P (c)) |
2b083808 | 562 | { |
4c0354d7 | 563 | c = BYTE8_TO_CHAR (c); |
0ef71121 | 564 | to_addr += CHAR_STRING (c, to_addr); |
2b083808 RS |
565 | nbytes--; |
566 | } | |
567 | else | |
568 | /* Special case for speed. */ | |
569 | *to_addr++ = c, nbytes--; | |
570 | } | |
571 | return to_addr - initial_to_addr; | |
572 | } | |
573 | } | |
574 | ||
575 | /* Return the number of bytes it would take | |
576 | to convert some single-byte text to multibyte. | |
577 | The single-byte text consists of NBYTES bytes at PTR. */ | |
578 | ||
ae19ba7c SM |
579 | EMACS_INT |
580 | count_size_as_multibyte (const unsigned char *ptr, EMACS_INT nbytes) | |
2b083808 | 581 | { |
ae19ba7c SM |
582 | EMACS_INT i; |
583 | EMACS_INT outgoing_nbytes = 0; | |
2b083808 RS |
584 | |
585 | for (i = 0; i < nbytes; i++) | |
586 | { | |
587 | unsigned int c = *ptr++; | |
59a52d50 | 588 | |
4c0354d7 | 589 | if (ASCII_CHAR_P (c)) |
59a52d50 KH |
590 | outgoing_nbytes++; |
591 | else | |
2b083808 | 592 | { |
4c0354d7 | 593 | c = BYTE8_TO_CHAR (c); |
643044eb | 594 | outgoing_nbytes += CHAR_BYTES (c); |
2b083808 | 595 | } |
2b083808 RS |
596 | } |
597 | ||
598 | return outgoing_nbytes; | |
599 | } | |
600 | \f | |
b45433b3 | 601 | /* Insert a string of specified length before point. |
2b083808 RS |
602 | This function judges multibyteness based on |
603 | enable_multibyte_characters in the current buffer; | |
604 | it never converts between single-byte and multibyte. | |
605 | ||
ef29f213 KH |
606 | DO NOT use this for the contents of a Lisp string or a Lisp buffer! |
607 | prepare_to_modify_buffer could relocate the text. */ | |
b45433b3 | 608 | |
c660b094 | 609 | void |
b68864e5 | 610 | insert (const char *string, EMACS_INT nbytes) |
b45433b3 | 611 | { |
3be11131 | 612 | if (nbytes > 0) |
395ec62e | 613 | { |
b68864e5 | 614 | EMACS_INT len = chars_in_text ((unsigned char *) string, nbytes), opoint; |
bab3eee1 EZ |
615 | insert_1_both (string, len, nbytes, 0, 1, 0); |
616 | opoint = PT - len; | |
617 | signal_after_change (opoint, 0, len); | |
0ef71121 | 618 | update_compositions (opoint, PT, CHECK_BORDER); |
cd11ef31 RS |
619 | } |
620 | } | |
621 | ||
2b083808 RS |
622 | /* Likewise, but inherit text properties from neighboring characters. */ |
623 | ||
c660b094 | 624 | void |
b68864e5 | 625 | insert_and_inherit (const char *string, EMACS_INT nbytes) |
cd11ef31 | 626 | { |
3be11131 | 627 | if (nbytes > 0) |
cd11ef31 | 628 | { |
b68864e5 | 629 | EMACS_INT len = chars_in_text ((unsigned char *) string, nbytes), opoint; |
bab3eee1 EZ |
630 | insert_1_both (string, len, nbytes, 1, 1, 0); |
631 | opoint = PT - len; | |
632 | signal_after_change (opoint, 0, len); | |
0ef71121 | 633 | update_compositions (opoint, PT, CHECK_BORDER); |
395ec62e KH |
634 | } |
635 | } | |
b45433b3 | 636 | |
2b083808 | 637 | /* Insert the character C before point. Do not inherit text properties. */ |
3be11131 | 638 | |
c660b094 | 639 | void |
ae19ba7c | 640 | insert_char (int c) |
3be11131 | 641 | { |
0ef71121 | 642 | unsigned char str[MAX_MULTIBYTE_LENGTH]; |
2b083808 RS |
643 | int len; |
644 | ||
4b4deea2 | 645 | if (! NILP (BVAR (current_buffer, enable_multibyte_characters))) |
0ef71121 | 646 | len = CHAR_STRING (c, str); |
2b083808 RS |
647 | else |
648 | { | |
649 | len = 1; | |
0ef71121 | 650 | str[0] = c; |
2b083808 | 651 | } |
3be11131 | 652 | |
b68864e5 | 653 | insert ((char *) str, len); |
3be11131 RS |
654 | } |
655 | ||
2b083808 | 656 | /* Insert the null-terminated string S before point. */ |
3be11131 RS |
657 | |
658 | void | |
ae19ba7c | 659 | insert_string (const char *s) |
3be11131 RS |
660 | { |
661 | insert (s, strlen (s)); | |
662 | } | |
663 | ||
664 | /* Like `insert' except that all markers pointing at the place where | |
665 | the insertion happens are adjusted to point after it. | |
666 | Don't use this function to insert part of a Lisp string, | |
667 | since gc could happen and relocate it. */ | |
668 | ||
669 | void | |
b68864e5 | 670 | insert_before_markers (const char *string, EMACS_INT nbytes) |
3be11131 RS |
671 | { |
672 | if (nbytes > 0) | |
673 | { | |
b68864e5 | 674 | EMACS_INT len = chars_in_text ((unsigned char *) string, nbytes), opoint; |
bab3eee1 EZ |
675 | insert_1_both (string, len, nbytes, 0, 1, 1); |
676 | opoint = PT - len; | |
677 | signal_after_change (opoint, 0, len); | |
0ef71121 | 678 | update_compositions (opoint, PT, CHECK_BORDER); |
3be11131 RS |
679 | } |
680 | } | |
681 | ||
2b083808 RS |
682 | /* Likewise, but inherit text properties from neighboring characters. */ |
683 | ||
3be11131 | 684 | void |
b68864e5 | 685 | insert_before_markers_and_inherit (const char *string, |
ae19ba7c | 686 | EMACS_INT nbytes) |
3be11131 RS |
687 | { |
688 | if (nbytes > 0) | |
689 | { | |
b68864e5 | 690 | EMACS_INT len = chars_in_text ((unsigned char *) string, nbytes), opoint; |
bab3eee1 EZ |
691 | insert_1_both (string, len, nbytes, 1, 1, 1); |
692 | opoint = PT - len; | |
693 | signal_after_change (opoint, 0, len); | |
0ef71121 | 694 | update_compositions (opoint, PT, CHECK_BORDER); |
3be11131 RS |
695 | } |
696 | } | |
1f90a790 | 697 | |
3be11131 RS |
698 | /* Subroutine used by the insert functions above. */ |
699 | ||
700 | void | |
b68864e5 | 701 | insert_1 (const char *string, EMACS_INT nbytes, |
ae19ba7c | 702 | int inherit, int prepare, int before_markers) |
395ec62e | 703 | { |
b68864e5 PE |
704 | insert_1_both (string, chars_in_text ((unsigned char *) string, nbytes), |
705 | nbytes, inherit, prepare, before_markers); | |
432f78d2 | 706 | } |
b16afa45 | 707 | |
1f90a790 | 708 | \f |
b16afa45 KH |
709 | #ifdef BYTE_COMBINING_DEBUG |
710 | ||
432f78d2 RS |
711 | /* See if the bytes before POS/POS_BYTE combine with bytes |
712 | at the start of STRING to form a single character. | |
ce97a2d7 | 713 | If so, return the number of bytes at the start of STRING |
432f78d2 | 714 | which combine in this way. Otherwise, return 0. */ |
b45433b3 | 715 | |
432f78d2 | 716 | int |
ae19ba7c SM |
717 | count_combining_before (const unsigned char *string, EMACS_INT length, |
718 | EMACS_INT pos, EMACS_INT pos_byte) | |
432f78d2 | 719 | { |
cae184f2 | 720 | int len, combining_bytes; |
641a26d2 | 721 | const unsigned char *p; |
b45433b3 | 722 | |
432f78d2 RS |
723 | if (NILP (current_buffer->enable_multibyte_characters)) |
724 | return 0; | |
cae184f2 KH |
725 | |
726 | /* At first, we can exclude the following cases: | |
727 | (1) STRING[0] can't be a following byte of multibyte sequence. | |
728 | (2) POS is the start of the current buffer. | |
729 | (3) A character before POS is not a multibyte character. */ | |
730 | if (length == 0 || CHAR_HEAD_P (*string)) /* case (1) */ | |
432f78d2 | 731 | return 0; |
cae184f2 | 732 | if (pos_byte == BEG_BYTE) /* case (2) */ |
432f78d2 | 733 | return 0; |
cae184f2 KH |
734 | len = 1; |
735 | p = BYTE_POS_ADDR (pos_byte - 1); | |
736 | while (! CHAR_HEAD_P (*p)) p--, len++; | |
409f2919 | 737 | if (! LEADING_CODE_P (*p)) /* case (3) */ |
432f78d2 | 738 | return 0; |
cae184f2 | 739 | |
cae184f2 KH |
740 | combining_bytes = BYTES_BY_CHAR_HEAD (*p) - len; |
741 | if (combining_bytes <= 0) | |
742 | /* The character preceding POS is, complete and no room for | |
743 | combining bytes (combining_bytes == 0), or an independent 8-bit | |
744 | character (combining_bytes < 0). */ | |
432f78d2 | 745 | return 0; |
ce97a2d7 | 746 | |
cae184f2 KH |
747 | /* We have a combination situation. Count the bytes at STRING that |
748 | may combine. */ | |
749 | p = string + 1; | |
ce97a2d7 RS |
750 | while (!CHAR_HEAD_P (*p) && p < string + length) |
751 | p++; | |
752 | ||
cae184f2 | 753 | return (combining_bytes < p - string ? combining_bytes : p - string); |
432f78d2 | 754 | } |
b45433b3 | 755 | |
432f78d2 RS |
756 | /* See if the bytes after POS/POS_BYTE combine with bytes |
757 | at the end of STRING to form a single character. | |
758 | If so, return the number of bytes after POS/POS_BYTE | |
759 | which combine in this way. Otherwise, return 0. */ | |
679194a6 | 760 | |
432f78d2 | 761 | int |
ae19ba7c SM |
762 | count_combining_after (const unsigned char *string, |
763 | EMACS_INT length, EMACS_INT pos, EMACS_INT pos_byte) | |
432f78d2 | 764 | { |
ae19ba7c SM |
765 | EMACS_INT opos_byte = pos_byte; |
766 | EMACS_INT i; | |
767 | EMACS_INT bytes; | |
cae184f2 | 768 | unsigned char *bufp; |
3be11131 | 769 | |
432f78d2 RS |
770 | if (NILP (current_buffer->enable_multibyte_characters)) |
771 | return 0; | |
cae184f2 KH |
772 | |
773 | /* At first, we can exclude the following cases: | |
774 | (1) The last byte of STRING is an ASCII. | |
775 | (2) POS is the last of the current buffer. | |
776 | (3) A character at POS can't be a following byte of multibyte | |
777 | character. */ | |
778 | if (length > 0 && ASCII_BYTE_P (string[length - 1])) /* case (1) */ | |
779 | return 0; | |
780 | if (pos_byte == Z_BYTE) /* case (2) */ | |
432f78d2 | 781 | return 0; |
cae184f2 KH |
782 | bufp = BYTE_POS_ADDR (pos_byte); |
783 | if (CHAR_HEAD_P (*bufp)) /* case (3) */ | |
784 | return 0; | |
785 | ||
432f78d2 | 786 | i = length - 1; |
b57a7b0b | 787 | while (i >= 0 && ! CHAR_HEAD_P (string[i])) |
432f78d2 RS |
788 | { |
789 | i--; | |
790 | } | |
b57a7b0b KH |
791 | if (i < 0) |
792 | { | |
cae184f2 KH |
793 | /* All characters in STRING are not character head. We must |
794 | check also preceding bytes at POS. We are sure that the gap | |
795 | is at POS. */ | |
796 | unsigned char *p = BEG_ADDR; | |
b57a7b0b | 797 | i = pos_byte - 2; |
cae184f2 | 798 | while (i >= 0 && ! CHAR_HEAD_P (p[i])) |
b57a7b0b | 799 | i--; |
409f2919 | 800 | if (i < 0 || !LEADING_CODE_P (p[i])) |
b57a7b0b | 801 | return 0; |
0ef71121 | 802 | |
cae184f2 KH |
803 | bytes = BYTES_BY_CHAR_HEAD (p[i]); |
804 | return (bytes <= pos_byte - 1 - i + length | |
805 | ? 0 | |
806 | : bytes - (pos_byte - 1 - i + length)); | |
b57a7b0b | 807 | } |
409f2919 | 808 | if (!LEADING_CODE_P (string[i])) |
432f78d2 RS |
809 | return 0; |
810 | ||
cae184f2 KH |
811 | bytes = BYTES_BY_CHAR_HEAD (string[i]) - (length - i); |
812 | bufp++, pos_byte++; | |
813 | while (!CHAR_HEAD_P (*bufp)) bufp++, pos_byte++; | |
cd11ef31 | 814 | |
cae184f2 | 815 | return (bytes <= pos_byte - opos_byte ? bytes : pos_byte - opos_byte); |
b45433b3 | 816 | } |
2b083808 | 817 | |
b16afa45 | 818 | #endif |
9f3ede3c | 819 | |
1f90a790 | 820 | \f |
2b083808 RS |
821 | /* Insert a sequence of NCHARS chars which occupy NBYTES bytes |
822 | starting at STRING. INHERIT, PREPARE and BEFORE_MARKERS | |
823 | are the same as in insert_1. */ | |
824 | ||
825 | void | |
b68864e5 | 826 | insert_1_both (const char *string, |
ae19ba7c SM |
827 | EMACS_INT nchars, EMACS_INT nbytes, |
828 | int inherit, int prepare, int before_markers) | |
2b083808 | 829 | { |
da80a8d5 GM |
830 | if (nchars == 0) |
831 | return; | |
177c0ea7 | 832 | |
4b4deea2 | 833 | if (NILP (BVAR (current_buffer, enable_multibyte_characters))) |
57404188 KH |
834 | nchars = nbytes; |
835 | ||
35d63725 RS |
836 | if (prepare) |
837 | /* Do this before moving and increasing the gap, | |
838 | because the before-change hooks might move the gap | |
839 | or make it smaller. */ | |
840 | prepare_to_modify_buffer (PT, PT, NULL); | |
841 | ||
2b083808 RS |
842 | if (PT != GPT) |
843 | move_gap_both (PT, PT_BYTE); | |
844 | if (GAP_SIZE < nbytes) | |
845 | make_gap (nbytes - GAP_SIZE); | |
846 | ||
b16afa45 KH |
847 | #ifdef BYTE_COMBINING_DEBUG |
848 | if (count_combining_before (string, nbytes, PT, PT_BYTE) | |
849 | || count_combining_after (string, nbytes, PT, PT_BYTE)) | |
850 | abort (); | |
851 | #endif | |
432f78d2 RS |
852 | |
853 | /* Record deletion of the surrounding text that combines with | |
854 | the insertion. This, together with recording the insertion, | |
b16afa45 KH |
855 | will add up to the right stuff in the undo list. */ |
856 | record_insert (PT, nchars); | |
2b083808 | 857 | MODIFF++; |
3e145152 | 858 | CHARS_MODIFF = MODIFF; |
2b083808 | 859 | |
72af86bd | 860 | memcpy (GPT_ADDR, string, nbytes); |
2b083808 | 861 | |
2b083808 | 862 | GAP_SIZE -= nbytes; |
1f90a790 RS |
863 | GPT += nchars; |
864 | ZV += nchars; | |
865 | Z += nchars; | |
2b083808 RS |
866 | GPT_BYTE += nbytes; |
867 | ZV_BYTE += nbytes; | |
868 | Z_BYTE += nbytes; | |
869 | if (GAP_SIZE > 0) *(GPT_ADDR) = 0; /* Put an anchor. */ | |
1f90a790 | 870 | |
1f90a790 RS |
871 | if (GPT_BYTE < GPT) |
872 | abort (); | |
873 | ||
9dde4e0c KS |
874 | /* The insert may have been in the unchanged region, so check again. */ |
875 | if (Z - GPT < END_UNCHANGED) | |
876 | END_UNCHANGED = Z - GPT; | |
877 | ||
1f90a790 | 878 | adjust_overlays_for_insert (PT, nchars); |
432f78d2 | 879 | adjust_markers_for_insert (PT, PT_BYTE, |
1f90a790 | 880 | PT + nchars, PT_BYTE + nbytes, |
2b083808 | 881 | before_markers); |
ce97a2d7 | 882 | |
1f90a790 | 883 | if (BUF_INTERVALS (current_buffer) != 0) |
1f90a790 RS |
884 | offset_intervals (current_buffer, PT, nchars); |
885 | ||
ce97a2d7 | 886 | if (!inherit && BUF_INTERVALS (current_buffer) != 0) |
f2cab2ea GM |
887 | set_text_properties (make_number (PT), make_number (PT + nchars), |
888 | Qnil, Qnil, Qnil); | |
ce97a2d7 | 889 | |
b16afa45 | 890 | adjust_point (nchars, nbytes); |
828f1ed3 KH |
891 | |
892 | CHECK_MARKERS (); | |
2b083808 | 893 | } |
3be11131 | 894 | \f |
679194a6 | 895 | /* Insert the part of the text of STRING, a Lisp object assumed to be |
2b083808 RS |
896 | of type string, consisting of the LENGTH characters (LENGTH_BYTE bytes) |
897 | starting at position POS / POS_BYTE. If the text of STRING has properties, | |
898 | copy them into the buffer. | |
679194a6 JA |
899 | |
900 | It does not work to use `insert' for this, because a GC could happen | |
72af86bd | 901 | before we copy the stuff into the buffer, and relocate the string |
7e1ea612 | 902 | without insert noticing. */ |
679194a6 | 903 | |
c660b094 | 904 | void |
ae19ba7c SM |
905 | insert_from_string (Lisp_Object string, EMACS_INT pos, EMACS_INT pos_byte, |
906 | EMACS_INT length, EMACS_INT length_byte, int inherit) | |
395ec62e | 907 | { |
ae19ba7c | 908 | EMACS_INT opoint = PT; |
d8bf4256 RS |
909 | |
910 | if (SCHARS (string) == 0) | |
911 | return; | |
912 | ||
62b82678 RS |
913 | insert_from_string_1 (string, pos, pos_byte, length, length_byte, |
914 | inherit, 0); | |
915 | signal_after_change (opoint, 0, PT - opoint); | |
0ef71121 | 916 | update_compositions (opoint, PT, CHECK_BORDER); |
395ec62e KH |
917 | } |
918 | ||
2b083808 RS |
919 | /* Like `insert_from_string' except that all markers pointing |
920 | at the place where the insertion happens are adjusted to point after it. */ | |
3be11131 RS |
921 | |
922 | void | |
ae19ba7c SM |
923 | insert_from_string_before_markers (Lisp_Object string, |
924 | EMACS_INT pos, EMACS_INT pos_byte, | |
925 | EMACS_INT length, EMACS_INT length_byte, | |
926 | int inherit) | |
3be11131 | 927 | { |
ae19ba7c | 928 | EMACS_INT opoint = PT; |
d8bf4256 RS |
929 | |
930 | if (SCHARS (string) == 0) | |
931 | return; | |
932 | ||
62b82678 RS |
933 | insert_from_string_1 (string, pos, pos_byte, length, length_byte, |
934 | inherit, 1); | |
935 | signal_after_change (opoint, 0, PT - opoint); | |
0ef71121 | 936 | update_compositions (opoint, PT, CHECK_BORDER); |
3be11131 RS |
937 | } |
938 | ||
939 | /* Subroutine of the insertion functions above. */ | |
940 | ||
941 | static void | |
ae19ba7c SM |
942 | insert_from_string_1 (Lisp_Object string, EMACS_INT pos, EMACS_INT pos_byte, |
943 | EMACS_INT nchars, EMACS_INT nbytes, | |
944 | int inherit, int before_markers) | |
b45433b3 | 945 | { |
b45433b3 | 946 | struct gcpro gcpro1; |
ae19ba7c | 947 | EMACS_INT outgoing_nbytes = nbytes; |
ce97a2d7 | 948 | INTERVAL intervals; |
2b083808 RS |
949 | |
950 | /* Make OUTGOING_NBYTES describe the text | |
951 | as it will be inserted in this buffer. */ | |
952 | ||
4b4deea2 | 953 | if (NILP (BVAR (current_buffer, enable_multibyte_characters))) |
2b083808 | 954 | outgoing_nbytes = nchars; |
2a1d8be0 | 955 | else if (! STRING_MULTIBYTE (string)) |
2b083808 | 956 | outgoing_nbytes |
f7e233a8 | 957 | = count_size_as_multibyte (SDATA (string) + pos_byte, |
2b083808 | 958 | nbytes); |
b45433b3 | 959 | |
b45433b3 | 960 | GCPRO1 (string); |
35d63725 RS |
961 | /* Do this before moving and increasing the gap, |
962 | because the before-change hooks might move the gap | |
963 | or make it smaller. */ | |
d206af14 | 964 | prepare_to_modify_buffer (PT, PT, NULL); |
b45433b3 | 965 | |
2bcaed71 | 966 | if (PT != GPT) |
3be11131 | 967 | move_gap_both (PT, PT_BYTE); |
534b9840 | 968 | if (GAP_SIZE < outgoing_nbytes) |
2b083808 | 969 | make_gap (outgoing_nbytes - GAP_SIZE); |
b45433b3 JB |
970 | UNGCPRO; |
971 | ||
2b083808 RS |
972 | /* Copy the string text into the buffer, perhaps converting |
973 | between single-byte and multibyte. */ | |
d5db4077 | 974 | copy_text (SDATA (string) + pos_byte, GPT_ADDR, nbytes, |
2a1d8be0 | 975 | STRING_MULTIBYTE (string), |
4b4deea2 | 976 | ! NILP (BVAR (current_buffer, enable_multibyte_characters))); |
b45433b3 | 977 | |
b16afa45 | 978 | #ifdef BYTE_COMBINING_DEBUG |
432f78d2 RS |
979 | /* We have copied text into the gap, but we have not altered |
980 | PT or PT_BYTE yet. So we can pass PT and PT_BYTE | |
981 | to these functions and get the same results as we would | |
982 | have got earlier on. Meanwhile, PT_ADDR does point to | |
983 | the text that has been stored by copy_text. */ | |
b16afa45 KH |
984 | if (count_combining_before (GPT_ADDR, outgoing_nbytes, PT, PT_BYTE) |
985 | || count_combining_after (GPT_ADDR, outgoing_nbytes, PT, PT_BYTE)) | |
986 | abort (); | |
987 | #endif | |
432f78d2 | 988 | |
b16afa45 | 989 | record_insert (PT, nchars); |
432f78d2 | 990 | MODIFF++; |
3e145152 | 991 | CHARS_MODIFF = MODIFF; |
432f78d2 | 992 | |
7792090e | 993 | GAP_SIZE -= outgoing_nbytes; |
1f90a790 RS |
994 | GPT += nchars; |
995 | ZV += nchars; | |
996 | Z += nchars; | |
2b083808 RS |
997 | GPT_BYTE += outgoing_nbytes; |
998 | ZV_BYTE += outgoing_nbytes; | |
999 | Z_BYTE += outgoing_nbytes; | |
469ff680 | 1000 | if (GAP_SIZE > 0) *(GPT_ADDR) = 0; /* Put an anchor. */ |
3be11131 RS |
1001 | |
1002 | if (GPT_BYTE < GPT) | |
1003 | abort (); | |
679194a6 | 1004 | |
9dde4e0c KS |
1005 | /* The insert may have been in the unchanged region, so check again. */ |
1006 | if (Z - GPT < END_UNCHANGED) | |
1007 | END_UNCHANGED = Z - GPT; | |
1008 | ||
1f90a790 RS |
1009 | adjust_overlays_for_insert (PT, nchars); |
1010 | adjust_markers_for_insert (PT, PT_BYTE, PT + nchars, | |
1011 | PT_BYTE + outgoing_nbytes, | |
1f90a790 | 1012 | before_markers); |
ce97a2d7 | 1013 | |
1f90a790 RS |
1014 | offset_intervals (current_buffer, PT, nchars); |
1015 | ||
d5db4077 | 1016 | intervals = STRING_INTERVALS (string); |
b16afa45 | 1017 | /* Get the intervals for the part of the string we are inserting. */ |
d5db4077 | 1018 | if (nbytes < SBYTES (string)) |
1f90a790 | 1019 | intervals = copy_intervals (intervals, pos, nchars); |
177c0ea7 | 1020 | |
ce97a2d7 | 1021 | /* Insert those intervals. */ |
1f90a790 | 1022 | graft_intervals_into_buffer (intervals, PT, nchars, |
9391e591 | 1023 | current_buffer, inherit); |
ce97a2d7 | 1024 | |
b16afa45 | 1025 | adjust_point (nchars, outgoing_nbytes); |
8f924df7 KH |
1026 | |
1027 | CHECK_MARKERS (); | |
1028 | } | |
1029 | \f | |
1030 | /* Insert a sequence of NCHARS chars which occupy NBYTES bytes | |
1031 | starting at GPT_ADDR. */ | |
1032 | ||
1033 | void | |
ae19ba7c | 1034 | insert_from_gap (EMACS_INT nchars, EMACS_INT nbytes) |
8f924df7 | 1035 | { |
4b4deea2 | 1036 | if (NILP (BVAR (current_buffer, enable_multibyte_characters))) |
8f924df7 KH |
1037 | nchars = nbytes; |
1038 | ||
1039 | record_insert (GPT, nchars); | |
1040 | MODIFF++; | |
1041 | ||
1042 | GAP_SIZE -= nbytes; | |
1043 | GPT += nchars; | |
1044 | ZV += nchars; | |
1045 | Z += nchars; | |
1046 | GPT_BYTE += nbytes; | |
1047 | ZV_BYTE += nbytes; | |
1048 | Z_BYTE += nbytes; | |
1049 | if (GAP_SIZE > 0) *(GPT_ADDR) = 0; /* Put an anchor. */ | |
1050 | ||
1051 | if (GPT_BYTE < GPT) | |
1052 | abort (); | |
1053 | ||
c669988b KH |
1054 | adjust_overlays_for_insert (GPT - nchars, nchars); |
1055 | adjust_markers_for_insert (GPT - nchars, GPT_BYTE - nbytes, | |
1056 | GPT, GPT_BYTE, 0); | |
8f924df7 KH |
1057 | |
1058 | if (BUF_INTERVALS (current_buffer) != 0) | |
c669988b KH |
1059 | { |
1060 | offset_intervals (current_buffer, GPT - nchars, nchars); | |
1061 | graft_intervals_into_buffer (NULL_INTERVAL, GPT - nchars, nchars, | |
1062 | current_buffer, 0); | |
1063 | } | |
8f924df7 KH |
1064 | |
1065 | if (GPT - nchars < PT) | |
1066 | adjust_point (nchars, nbytes); | |
1067 | ||
1068 | CHECK_MARKERS (); | |
b45433b3 | 1069 | } |
3be11131 RS |
1070 | \f |
1071 | /* Insert text from BUF, NCHARS characters starting at CHARPOS, into the | |
ef29f213 KH |
1072 | current buffer. If the text in BUF has properties, they are absorbed |
1073 | into the current buffer. | |
1074 | ||
1075 | It does not work to use `insert' for this, because a malloc could happen | |
72af86bd | 1076 | and relocate BUF's text before the copy happens. */ |
ef29f213 KH |
1077 | |
1078 | void | |
ae19ba7c SM |
1079 | insert_from_buffer (struct buffer *buf, |
1080 | EMACS_INT charpos, EMACS_INT nchars, int inherit) | |
ef29f213 | 1081 | { |
ae19ba7c | 1082 | EMACS_INT opoint = PT; |
3be11131 | 1083 | |
62b82678 RS |
1084 | insert_from_buffer_1 (buf, charpos, nchars, inherit); |
1085 | signal_after_change (opoint, 0, PT - opoint); | |
0ef71121 | 1086 | update_compositions (opoint, PT, CHECK_BORDER); |
ef29f213 KH |
1087 | } |
1088 | ||
1089 | static void | |
ae19ba7c SM |
1090 | insert_from_buffer_1 (struct buffer *buf, |
1091 | EMACS_INT from, EMACS_INT nchars, int inherit) | |
ef29f213 | 1092 | { |
0aa8c4b2 | 1093 | register Lisp_Object temp; |
ae19ba7c SM |
1094 | EMACS_INT chunk, chunk_expanded; |
1095 | EMACS_INT from_byte = buf_charpos_to_bytepos (buf, from); | |
1096 | EMACS_INT to_byte = buf_charpos_to_bytepos (buf, from + nchars); | |
1097 | EMACS_INT incoming_nbytes = to_byte - from_byte; | |
1098 | EMACS_INT outgoing_nbytes = incoming_nbytes; | |
ce97a2d7 | 1099 | INTERVAL intervals; |
2b083808 RS |
1100 | |
1101 | /* Make OUTGOING_NBYTES describe the text | |
1102 | as it will be inserted in this buffer. */ | |
1103 | ||
4b4deea2 | 1104 | if (NILP (BVAR (current_buffer, enable_multibyte_characters))) |
2b083808 | 1105 | outgoing_nbytes = nchars; |
4b4deea2 | 1106 | else if (NILP (BVAR (buf, enable_multibyte_characters))) |
4468c4f1 | 1107 | { |
ae19ba7c SM |
1108 | EMACS_INT outgoing_before_gap = 0; |
1109 | EMACS_INT outgoing_after_gap = 0; | |
ef29f213 | 1110 | |
4468c4f1 KH |
1111 | if (from < BUF_GPT (buf)) |
1112 | { | |
1113 | chunk = BUF_GPT_BYTE (buf) - from_byte; | |
1114 | if (chunk > incoming_nbytes) | |
1115 | chunk = incoming_nbytes; | |
1116 | outgoing_before_gap | |
1117 | = count_size_as_multibyte (BUF_BYTE_ADDRESS (buf, from_byte), | |
1118 | chunk); | |
1119 | } | |
1120 | else | |
1121 | chunk = 0; | |
1122 | ||
1123 | if (chunk < incoming_nbytes) | |
1124 | outgoing_after_gap | |
177c0ea7 | 1125 | = count_size_as_multibyte (BUF_BYTE_ADDRESS (buf, |
4468c4f1 KH |
1126 | from_byte + chunk), |
1127 | incoming_nbytes - chunk); | |
1128 | ||
1129 | outgoing_nbytes = outgoing_before_gap + outgoing_after_gap; | |
1130 | } | |
177c0ea7 | 1131 | |
ef29f213 | 1132 | /* Make sure point-max won't overflow after this insertion. */ |
2b083808 RS |
1133 | XSETINT (temp, outgoing_nbytes + Z); |
1134 | if (outgoing_nbytes + Z != XINT (temp)) | |
3be11131 | 1135 | error ("Maximum buffer size exceeded"); |
ef29f213 | 1136 | |
35d63725 RS |
1137 | /* Do this before moving and increasing the gap, |
1138 | because the before-change hooks might move the gap | |
1139 | or make it smaller. */ | |
d206af14 | 1140 | prepare_to_modify_buffer (PT, PT, NULL); |
ef29f213 KH |
1141 | |
1142 | if (PT != GPT) | |
3be11131 | 1143 | move_gap_both (PT, PT_BYTE); |
2b083808 RS |
1144 | if (GAP_SIZE < outgoing_nbytes) |
1145 | make_gap (outgoing_nbytes - GAP_SIZE); | |
ef29f213 | 1146 | |
3be11131 | 1147 | if (from < BUF_GPT (buf)) |
ef29f213 | 1148 | { |
3be11131 | 1149 | chunk = BUF_GPT_BYTE (buf) - from_byte; |
2b083808 RS |
1150 | if (chunk > incoming_nbytes) |
1151 | chunk = incoming_nbytes; | |
4468c4f1 KH |
1152 | /* Record number of output bytes, so we know where |
1153 | to put the output from the second copy_text. */ | |
1154 | chunk_expanded | |
1155 | = copy_text (BUF_BYTE_ADDRESS (buf, from_byte), | |
1156 | GPT_ADDR, chunk, | |
4b4deea2 TT |
1157 | ! NILP (BVAR (buf, enable_multibyte_characters)), |
1158 | ! NILP (BVAR (current_buffer, enable_multibyte_characters))); | |
ef29f213 KH |
1159 | } |
1160 | else | |
4468c4f1 KH |
1161 | chunk_expanded = chunk = 0; |
1162 | ||
2b083808 RS |
1163 | if (chunk < incoming_nbytes) |
1164 | copy_text (BUF_BYTE_ADDRESS (buf, from_byte + chunk), | |
4468c4f1 | 1165 | GPT_ADDR + chunk_expanded, incoming_nbytes - chunk, |
4b4deea2 TT |
1166 | ! NILP (BVAR (buf, enable_multibyte_characters)), |
1167 | ! NILP (BVAR (current_buffer, enable_multibyte_characters))); | |
ef29f213 | 1168 | |
b16afa45 | 1169 | #ifdef BYTE_COMBINING_DEBUG |
432f78d2 RS |
1170 | /* We have copied text into the gap, but we have not altered |
1171 | PT or PT_BYTE yet. So we can pass PT and PT_BYTE | |
1172 | to these functions and get the same results as we would | |
1f90a790 | 1173 | have got earlier on. Meanwhile, GPT_ADDR does point to |
432f78d2 | 1174 | the text that has been stored by copy_text. */ |
b16afa45 KH |
1175 | if (count_combining_before (GPT_ADDR, outgoing_nbytes, PT, PT_BYTE) |
1176 | || count_combining_after (GPT_ADDR, outgoing_nbytes, PT, PT_BYTE)) | |
1177 | abort (); | |
1178 | #endif | |
432f78d2 | 1179 | |
b16afa45 | 1180 | record_insert (PT, nchars); |
432f78d2 | 1181 | MODIFF++; |
3e145152 | 1182 | CHARS_MODIFF = MODIFF; |
432f78d2 | 1183 | |
2b083808 | 1184 | GAP_SIZE -= outgoing_nbytes; |
1f90a790 RS |
1185 | GPT += nchars; |
1186 | ZV += nchars; | |
1187 | Z += nchars; | |
2b083808 RS |
1188 | GPT_BYTE += outgoing_nbytes; |
1189 | ZV_BYTE += outgoing_nbytes; | |
1190 | Z_BYTE += outgoing_nbytes; | |
469ff680 | 1191 | if (GAP_SIZE > 0) *(GPT_ADDR) = 0; /* Put an anchor. */ |
1f90a790 | 1192 | |
1f90a790 RS |
1193 | if (GPT_BYTE < GPT) |
1194 | abort (); | |
1195 | ||
9dde4e0c KS |
1196 | /* The insert may have been in the unchanged region, so check again. */ |
1197 | if (Z - GPT < END_UNCHANGED) | |
1198 | END_UNCHANGED = Z - GPT; | |
1199 | ||
1f90a790 RS |
1200 | adjust_overlays_for_insert (PT, nchars); |
1201 | adjust_markers_for_insert (PT, PT_BYTE, PT + nchars, | |
432f78d2 | 1202 | PT_BYTE + outgoing_nbytes, |
b16afa45 | 1203 | 0); |
ce97a2d7 | 1204 | |
1f90a790 RS |
1205 | if (BUF_INTERVALS (current_buffer) != 0) |
1206 | offset_intervals (current_buffer, PT, nchars); | |
ce97a2d7 | 1207 | |
b16afa45 | 1208 | /* Get the intervals for the part of the string we are inserting. */ |
ce97a2d7 | 1209 | intervals = BUF_INTERVALS (buf); |
f1a6b216 | 1210 | if (nchars < BUF_Z (buf) - BUF_BEG (buf)) |
06d8227a GM |
1211 | { |
1212 | if (buf == current_buffer && PT <= from) | |
1213 | from += nchars; | |
1214 | intervals = copy_intervals (intervals, from, nchars); | |
1215 | } | |
177c0ea7 | 1216 | |
ce97a2d7 | 1217 | /* Insert those intervals. */ |
1f90a790 | 1218 | graft_intervals_into_buffer (intervals, PT, nchars, current_buffer, inherit); |
ce97a2d7 | 1219 | |
b16afa45 | 1220 | adjust_point (nchars, outgoing_nbytes); |
b45433b3 JB |
1221 | } |
1222 | \f | |
652838b5 KH |
1223 | /* Record undo information and adjust markers and position keepers for |
1224 | a replacement of a text PREV_TEXT at FROM to a new text of LEN | |
1225 | chars (LEN_BYTE bytes) which resides in the gap just after | |
1226 | GPT_ADDR. | |
1227 | ||
1228 | PREV_TEXT nil means the new text was just inserted. */ | |
2d9eea44 | 1229 | |
77382fcc | 1230 | static void |
ae19ba7c SM |
1231 | adjust_after_replace (EMACS_INT from, EMACS_INT from_byte, |
1232 | Lisp_Object prev_text, EMACS_INT len, EMACS_INT len_byte) | |
1e9c7b7d | 1233 | { |
ae19ba7c | 1234 | EMACS_INT nchars_del = 0, nbytes_del = 0; |
61415a25 | 1235 | |
b16afa45 KH |
1236 | #ifdef BYTE_COMBINING_DEBUG |
1237 | if (count_combining_before (GPT_ADDR, len_byte, from, from_byte) | |
1238 | || count_combining_after (GPT_ADDR, len_byte, from, from_byte)) | |
1239 | abort (); | |
1240 | #endif | |
1241 | ||
828f1ed3 KH |
1242 | if (STRINGP (prev_text)) |
1243 | { | |
d5db4077 KR |
1244 | nchars_del = SCHARS (prev_text); |
1245 | nbytes_del = SBYTES (prev_text); | |
828f1ed3 KH |
1246 | } |
1247 | ||
61415a25 KH |
1248 | /* Update various buffer positions for the new text. */ |
1249 | GAP_SIZE -= len_byte; | |
1250 | ZV += len; Z+= len; | |
1251 | ZV_BYTE += len_byte; Z_BYTE += len_byte; | |
1252 | GPT += len; GPT_BYTE += len_byte; | |
1253 | if (GAP_SIZE > 0) *(GPT_ADDR) = 0; /* Put an anchor. */ | |
1254 | ||
adee4f91 KH |
1255 | if (nchars_del > 0) |
1256 | adjust_markers_for_replace (from, from_byte, nchars_del, nbytes_del, | |
1257 | len, len_byte); | |
1258 | else | |
1259 | adjust_markers_for_insert (from, from_byte, | |
1260 | from + len, from_byte + len_byte, 0); | |
b16afa45 | 1261 | |
4b4deea2 | 1262 | if (! EQ (BVAR (current_buffer, undo_list), Qt)) |
828f1ed3 | 1263 | { |
828f1ed3 | 1264 | if (nchars_del > 0) |
b16afa45 KH |
1265 | record_delete (from, prev_text); |
1266 | record_insert (from, len); | |
828f1ed3 | 1267 | } |
652838b5 KH |
1268 | |
1269 | if (len > nchars_del) | |
1270 | adjust_overlays_for_insert (from, len - nchars_del); | |
1271 | else if (len < nchars_del) | |
1272 | adjust_overlays_for_delete (from, nchars_del - len); | |
61415a25 | 1273 | if (BUF_INTERVALS (current_buffer) != 0) |
4a7cf15f KH |
1274 | { |
1275 | offset_intervals (current_buffer, from, len - nchars_del); | |
4a7cf15f | 1276 | } |
61415a25 | 1277 | |
b16afa45 KH |
1278 | if (from < PT) |
1279 | adjust_point (len - nchars_del, len_byte - nbytes_del); | |
61415a25 | 1280 | |
9f3ede3c | 1281 | /* As byte combining will decrease Z, we must check this again. */ |
a50df55b GM |
1282 | if (Z - GPT < END_UNCHANGED) |
1283 | END_UNCHANGED = Z - GPT; | |
9f3ede3c | 1284 | |
60ea6052 RS |
1285 | CHECK_MARKERS (); |
1286 | ||
1e9c7b7d | 1287 | if (len == 0) |
b58e3ca1 RS |
1288 | evaporate_overlays (from); |
1289 | MODIFF++; | |
3e145152 | 1290 | CHARS_MODIFF = MODIFF; |
b58e3ca1 RS |
1291 | } |
1292 | ||
652838b5 KH |
1293 | /* Record undo information, adjust markers and position keepers for an |
1294 | insertion of a text from FROM (FROM_BYTE) to TO (TO_BYTE). The | |
1295 | text already exists in the current buffer but character length (TO | |
1296 | - FROM) may be incorrect, the correct length is NEWLEN. */ | |
1297 | ||
1298 | void | |
ae19ba7c SM |
1299 | adjust_after_insert (EMACS_INT from, EMACS_INT from_byte, |
1300 | EMACS_INT to, EMACS_INT to_byte, EMACS_INT newlen) | |
652838b5 | 1301 | { |
ae19ba7c | 1302 | EMACS_INT len = to - from, len_byte = to_byte - from_byte; |
652838b5 KH |
1303 | |
1304 | if (GPT != to) | |
1305 | move_gap_both (to, to_byte); | |
1306 | GAP_SIZE += len_byte; | |
1307 | GPT -= len; GPT_BYTE -= len_byte; | |
1308 | ZV -= len; ZV_BYTE -= len_byte; | |
1309 | Z -= len; Z_BYTE -= len_byte; | |
1310 | adjust_after_replace (from, from_byte, Qnil, newlen, len_byte); | |
1311 | } | |
085db7de | 1312 | \f |
3be11131 | 1313 | /* Replace the text from character positions FROM to TO with NEW, |
c5ca4d3a RS |
1314 | If PREPARE is nonzero, call prepare_to_modify_buffer. |
1315 | If INHERIT, the newly inserted text should inherit text properties | |
1316 | from the surrounding non-deleted text. */ | |
1317 | ||
1318 | /* Note that this does not yet handle markers quite right. | |
1319 | Also it needs to record a single undo-entry that does a replacement | |
1320 | rather than a separate delete and insert. | |
60aa777a RS |
1321 | That way, undo will also handle markers properly. |
1322 | ||
1323 | But if MARKERS is 0, don't relocate markers. */ | |
c5ca4d3a RS |
1324 | |
1325 | void | |
ae19ba7c SM |
1326 | replace_range (EMACS_INT from, EMACS_INT to, Lisp_Object new, |
1327 | int prepare, int inherit, int markers) | |
c5ca4d3a | 1328 | { |
ae19ba7c SM |
1329 | EMACS_INT inschars = SCHARS (new); |
1330 | EMACS_INT insbytes = SBYTES (new); | |
1331 | EMACS_INT from_byte, to_byte; | |
1332 | EMACS_INT nbytes_del, nchars_del; | |
c5ca4d3a RS |
1333 | register Lisp_Object temp; |
1334 | struct gcpro gcpro1; | |
ce97a2d7 | 1335 | INTERVAL intervals; |
ae19ba7c | 1336 | EMACS_INT outgoing_insbytes = insbytes; |
23b20a70 | 1337 | Lisp_Object deletion; |
c5ca4d3a | 1338 | |
60ea6052 RS |
1339 | CHECK_MARKERS (); |
1340 | ||
c5ca4d3a | 1341 | GCPRO1 (new); |
6bbd7a29 | 1342 | deletion = Qnil; |
c5ca4d3a RS |
1343 | |
1344 | if (prepare) | |
1345 | { | |
ae19ba7c | 1346 | EMACS_INT range_length = to - from; |
c5ca4d3a RS |
1347 | prepare_to_modify_buffer (from, to, &from); |
1348 | to = from + range_length; | |
1349 | } | |
1350 | ||
3be11131 RS |
1351 | UNGCPRO; |
1352 | ||
c5ca4d3a RS |
1353 | /* Make args be valid */ |
1354 | if (from < BEGV) | |
1355 | from = BEGV; | |
1356 | if (to > ZV) | |
1357 | to = ZV; | |
1358 | ||
3be11131 RS |
1359 | from_byte = CHAR_TO_BYTE (from); |
1360 | to_byte = CHAR_TO_BYTE (to); | |
c5ca4d3a | 1361 | |
3be11131 RS |
1362 | nchars_del = to - from; |
1363 | nbytes_del = to_byte - from_byte; | |
1364 | ||
1365 | if (nbytes_del <= 0 && insbytes == 0) | |
1366 | return; | |
c5ca4d3a | 1367 | |
1f90a790 RS |
1368 | /* Make OUTGOING_INSBYTES describe the text |
1369 | as it will be inserted in this buffer. */ | |
1370 | ||
4b4deea2 | 1371 | if (NILP (BVAR (current_buffer, enable_multibyte_characters))) |
1f90a790 | 1372 | outgoing_insbytes = inschars; |
2a1d8be0 | 1373 | else if (! STRING_MULTIBYTE (new)) |
1f90a790 | 1374 | outgoing_insbytes |
d5db4077 | 1375 | = count_size_as_multibyte (SDATA (new), insbytes); |
1f90a790 | 1376 | |
c5ca4d3a | 1377 | /* Make sure point-max won't overflow after this insertion. */ |
3be11131 RS |
1378 | XSETINT (temp, Z_BYTE - nbytes_del + insbytes); |
1379 | if (Z_BYTE - nbytes_del + insbytes != XINT (temp)) | |
1380 | error ("Maximum buffer size exceeded"); | |
c5ca4d3a | 1381 | |
c5ca4d3a RS |
1382 | GCPRO1 (new); |
1383 | ||
1384 | /* Make sure the gap is somewhere in or next to what we are deleting. */ | |
1385 | if (from > GPT) | |
3be11131 | 1386 | gap_right (from, from_byte); |
c5ca4d3a | 1387 | if (to < GPT) |
3be11131 | 1388 | gap_left (to, to_byte, 0); |
c5ca4d3a | 1389 | |
039af53a KH |
1390 | /* Even if we don't record for undo, we must keep the original text |
1391 | because we may have to recover it because of inappropriate byte | |
1392 | combining. */ | |
4b4deea2 | 1393 | if (! EQ (BVAR (current_buffer, undo_list), Qt)) |
b16afa45 | 1394 | deletion = make_buffer_string_both (from, from_byte, to, to_byte, 1); |
c5ca4d3a | 1395 | |
3be11131 RS |
1396 | GAP_SIZE += nbytes_del; |
1397 | ZV -= nchars_del; | |
1398 | Z -= nchars_del; | |
1399 | ZV_BYTE -= nbytes_del; | |
1400 | Z_BYTE -= nbytes_del; | |
c5ca4d3a | 1401 | GPT = from; |
3be11131 | 1402 | GPT_BYTE = from_byte; |
017e09ac | 1403 | if (GAP_SIZE > 0) *(GPT_ADDR) = 0; /* Put an anchor. */ |
c5ca4d3a | 1404 | |
3be11131 RS |
1405 | if (GPT_BYTE < GPT) |
1406 | abort (); | |
1407 | ||
a50df55b GM |
1408 | if (GPT - BEG < BEG_UNCHANGED) |
1409 | BEG_UNCHANGED = GPT - BEG; | |
1410 | if (Z - GPT < END_UNCHANGED) | |
1411 | END_UNCHANGED = Z - GPT; | |
c5ca4d3a | 1412 | |
3be11131 RS |
1413 | if (GAP_SIZE < insbytes) |
1414 | make_gap (insbytes - GAP_SIZE); | |
c5ca4d3a | 1415 | |
1f90a790 RS |
1416 | /* Copy the string text into the buffer, perhaps converting |
1417 | between single-byte and multibyte. */ | |
d5db4077 | 1418 | copy_text (SDATA (new), GPT_ADDR, insbytes, |
2a1d8be0 | 1419 | STRING_MULTIBYTE (new), |
4b4deea2 | 1420 | ! NILP (BVAR (current_buffer, enable_multibyte_characters))); |
1f90a790 | 1421 | |
b16afa45 | 1422 | #ifdef BYTE_COMBINING_DEBUG |
255c7dae RS |
1423 | /* We have copied text into the gap, but we have not marked |
1424 | it as part of the buffer. So we can use the old FROM and FROM_BYTE | |
1425 | here, for both the previous text and the following text. | |
1426 | Meanwhile, GPT_ADDR does point to | |
432f78d2 | 1427 | the text that has been stored by copy_text. */ |
b16afa45 KH |
1428 | if (count_combining_before (GPT_ADDR, outgoing_insbytes, from, from_byte) |
1429 | || count_combining_after (GPT_ADDR, outgoing_insbytes, from, from_byte)) | |
1430 | abort (); | |
1431 | #endif | |
432f78d2 | 1432 | |
4b4deea2 | 1433 | if (! EQ (BVAR (current_buffer, undo_list), Qt)) |
23b20a70 | 1434 | { |
bec1aca2 RS |
1435 | /* Record the insertion first, so that when we undo, |
1436 | the deletion will be undone first. Thus, undo | |
1437 | will insert before deleting, and thus will keep | |
1438 | the markers before and after this text separate. */ | |
1439 | record_insert (from + SCHARS (deletion), inschars); | |
b16afa45 | 1440 | record_delete (from, deletion); |
23b20a70 | 1441 | } |
c5ca4d3a | 1442 | |
1f90a790 RS |
1443 | GAP_SIZE -= outgoing_insbytes; |
1444 | GPT += inschars; | |
1445 | ZV += inschars; | |
1446 | Z += inschars; | |
1447 | GPT_BYTE += outgoing_insbytes; | |
1448 | ZV_BYTE += outgoing_insbytes; | |
1449 | Z_BYTE += outgoing_insbytes; | |
c5ca4d3a RS |
1450 | if (GAP_SIZE > 0) *(GPT_ADDR) = 0; /* Put an anchor. */ |
1451 | ||
3be11131 RS |
1452 | if (GPT_BYTE < GPT) |
1453 | abort (); | |
1454 | ||
c5ca4d3a RS |
1455 | /* Adjust the overlay center as needed. This must be done after |
1456 | adjusting the markers that bound the overlays. */ | |
3be11131 | 1457 | adjust_overlays_for_delete (from, nchars_del); |
1f90a790 | 1458 | adjust_overlays_for_insert (from, inschars); |
048a0fbb RS |
1459 | |
1460 | /* Adjust markers for the deletion and the insertion. */ | |
60aa777a | 1461 | if (markers) |
048a0fbb RS |
1462 | adjust_markers_for_replace (from, from_byte, nchars_del, nbytes_del, |
1463 | inschars, outgoing_insbytes); | |
c5ca4d3a | 1464 | |
255c7dae | 1465 | offset_intervals (current_buffer, from, inschars - nchars_del); |
ce97a2d7 RS |
1466 | |
1467 | /* Get the intervals for the part of the string we are inserting-- | |
1468 | not including the combined-before bytes. */ | |
d5db4077 | 1469 | intervals = STRING_INTERVALS (new); |
ce97a2d7 | 1470 | /* Insert those intervals. */ |
1f90a790 | 1471 | graft_intervals_into_buffer (intervals, from, inschars, |
ce97a2d7 | 1472 | current_buffer, inherit); |
c5ca4d3a | 1473 | |
1f90a790 RS |
1474 | /* Relocate point as if it were a marker. */ |
1475 | if (from < PT) | |
8bedbe9d | 1476 | adjust_point ((from + inschars - (PT < to ? PT : to)), |
1f90a790 | 1477 | (from_byte + outgoing_insbytes |
8bedbe9d | 1478 | - (PT_BYTE < to_byte ? PT_BYTE : to_byte))); |
c5ca4d3a | 1479 | |
1f90a790 RS |
1480 | if (outgoing_insbytes == 0) |
1481 | evaporate_overlays (from); | |
93b882e8 | 1482 | |
60ea6052 RS |
1483 | CHECK_MARKERS (); |
1484 | ||
c5ca4d3a | 1485 | MODIFF++; |
3e145152 | 1486 | CHARS_MODIFF = MODIFF; |
c5ca4d3a RS |
1487 | UNGCPRO; |
1488 | ||
255c7dae | 1489 | signal_after_change (from, nchars_del, GPT - from); |
0ef71121 | 1490 | update_compositions (from, GPT, CHECK_BORDER); |
c5ca4d3a RS |
1491 | } |
1492 | \f | |
085db7de RS |
1493 | /* Replace the text from character positions FROM to TO with |
1494 | the text in INS of length INSCHARS. | |
1495 | Keep the text properties that applied to the old characters | |
1496 | (extending them to all the new chars if there are more new chars). | |
1497 | ||
1498 | Note that this does not yet handle markers quite right. | |
1499 | ||
1500 | If MARKERS is nonzero, relocate markers. | |
1501 | ||
1502 | Unlike most functions at this level, never call | |
1503 | prepare_to_modify_buffer and never call signal_after_change. */ | |
1504 | ||
1505 | void | |
ae19ba7c SM |
1506 | replace_range_2 (EMACS_INT from, EMACS_INT from_byte, |
1507 | EMACS_INT to, EMACS_INT to_byte, | |
a8fe7202 | 1508 | const char *ins, EMACS_INT inschars, EMACS_INT insbytes, |
ae19ba7c | 1509 | int markers) |
085db7de | 1510 | { |
ae19ba7c | 1511 | EMACS_INT nbytes_del, nchars_del; |
085db7de RS |
1512 | Lisp_Object temp; |
1513 | ||
1514 | CHECK_MARKERS (); | |
1515 | ||
1516 | nchars_del = to - from; | |
1517 | nbytes_del = to_byte - from_byte; | |
1518 | ||
1519 | if (nbytes_del <= 0 && insbytes == 0) | |
1520 | return; | |
1521 | ||
1522 | /* Make sure point-max won't overflow after this insertion. */ | |
1523 | XSETINT (temp, Z_BYTE - nbytes_del + insbytes); | |
1524 | if (Z_BYTE - nbytes_del + insbytes != XINT (temp)) | |
1525 | error ("Maximum buffer size exceeded"); | |
1526 | ||
1527 | /* Make sure the gap is somewhere in or next to what we are deleting. */ | |
1528 | if (from > GPT) | |
1529 | gap_right (from, from_byte); | |
1530 | if (to < GPT) | |
1531 | gap_left (to, to_byte, 0); | |
1532 | ||
1533 | GAP_SIZE += nbytes_del; | |
1534 | ZV -= nchars_del; | |
1535 | Z -= nchars_del; | |
1536 | ZV_BYTE -= nbytes_del; | |
1537 | Z_BYTE -= nbytes_del; | |
1538 | GPT = from; | |
1539 | GPT_BYTE = from_byte; | |
1540 | if (GAP_SIZE > 0) *(GPT_ADDR) = 0; /* Put an anchor. */ | |
1541 | ||
1542 | if (GPT_BYTE < GPT) | |
1543 | abort (); | |
1544 | ||
1545 | if (GPT - BEG < BEG_UNCHANGED) | |
1546 | BEG_UNCHANGED = GPT - BEG; | |
1547 | if (Z - GPT < END_UNCHANGED) | |
1548 | END_UNCHANGED = Z - GPT; | |
1549 | ||
1550 | if (GAP_SIZE < insbytes) | |
1551 | make_gap (insbytes - GAP_SIZE); | |
1552 | ||
1553 | /* Copy the replacement text into the buffer. */ | |
72af86bd | 1554 | memcpy (GPT_ADDR, ins, insbytes); |
085db7de RS |
1555 | |
1556 | #ifdef BYTE_COMBINING_DEBUG | |
1557 | /* We have copied text into the gap, but we have not marked | |
1558 | it as part of the buffer. So we can use the old FROM and FROM_BYTE | |
1559 | here, for both the previous text and the following text. | |
1560 | Meanwhile, GPT_ADDR does point to | |
1561 | the text that has been stored by copy_text. */ | |
1562 | if (count_combining_before (GPT_ADDR, insbytes, from, from_byte) | |
1563 | || count_combining_after (GPT_ADDR, insbytes, from, from_byte)) | |
1564 | abort (); | |
1565 | #endif | |
1566 | ||
1567 | GAP_SIZE -= insbytes; | |
1568 | GPT += inschars; | |
1569 | ZV += inschars; | |
1570 | Z += inschars; | |
1571 | GPT_BYTE += insbytes; | |
1572 | ZV_BYTE += insbytes; | |
1573 | Z_BYTE += insbytes; | |
1574 | if (GAP_SIZE > 0) *(GPT_ADDR) = 0; /* Put an anchor. */ | |
1575 | ||
1576 | if (GPT_BYTE < GPT) | |
1577 | abort (); | |
1578 | ||
1579 | /* Adjust the overlay center as needed. This must be done after | |
1580 | adjusting the markers that bound the overlays. */ | |
1581 | if (nchars_del != inschars) | |
1582 | { | |
1583 | adjust_overlays_for_insert (from, inschars); | |
1584 | adjust_overlays_for_delete (from + inschars, nchars_del); | |
1585 | } | |
1586 | ||
1587 | /* Adjust markers for the deletion and the insertion. */ | |
1588 | if (markers | |
7077904e | 1589 | && ! (nchars_del == 1 && inschars == 1 && nbytes_del == insbytes)) |
085db7de RS |
1590 | adjust_markers_for_replace (from, from_byte, nchars_del, nbytes_del, |
1591 | inschars, insbytes); | |
1592 | ||
1593 | offset_intervals (current_buffer, from, inschars - nchars_del); | |
1594 | ||
1595 | /* Relocate point as if it were a marker. */ | |
7077904e KH |
1596 | if (from < PT && (nchars_del != inschars || nbytes_del != insbytes)) |
1597 | { | |
1598 | if (PT < to) | |
1599 | /* PT was within the deleted text. Move it to FROM. */ | |
1600 | adjust_point (from - PT, from_byte - PT_BYTE); | |
1601 | else | |
1602 | adjust_point (inschars - nchars_del, insbytes - nbytes_del); | |
1603 | } | |
085db7de RS |
1604 | |
1605 | if (insbytes == 0) | |
1606 | evaporate_overlays (from); | |
1607 | ||
1608 | CHECK_MARKERS (); | |
1609 | ||
1610 | MODIFF++; | |
3e145152 | 1611 | CHARS_MODIFF = MODIFF; |
085db7de RS |
1612 | } |
1613 | \f | |
b45433b3 | 1614 | /* Delete characters in current buffer |
3be11131 RS |
1615 | from FROM up to (but not including) TO. |
1616 | If TO comes before FROM, we delete nothing. */ | |
b45433b3 | 1617 | |
c660b094 | 1618 | void |
ae19ba7c | 1619 | del_range (EMACS_INT from, EMACS_INT to) |
47c64747 | 1620 | { |
7dae4502 | 1621 | del_range_1 (from, to, 1, 0); |
47c64747 RS |
1622 | } |
1623 | ||
7dae4502 SM |
1624 | /* Like del_range; PREPARE says whether to call prepare_to_modify_buffer. |
1625 | RET_STRING says to return the deleted text. */ | |
47c64747 | 1626 | |
7dae4502 | 1627 | Lisp_Object |
ae19ba7c | 1628 | del_range_1 (EMACS_INT from, EMACS_INT to, int prepare, int ret_string) |
b45433b3 | 1629 | { |
ae19ba7c | 1630 | EMACS_INT from_byte, to_byte; |
7dae4502 SM |
1631 | Lisp_Object deletion; |
1632 | struct gcpro gcpro1; | |
3be11131 RS |
1633 | |
1634 | /* Make args be valid */ | |
1635 | if (from < BEGV) | |
1636 | from = BEGV; | |
1637 | if (to > ZV) | |
1638 | to = ZV; | |
1639 | ||
1640 | if (to <= from) | |
7dae4502 | 1641 | return Qnil; |
3be11131 RS |
1642 | |
1643 | if (prepare) | |
1644 | { | |
ae19ba7c | 1645 | EMACS_INT range_length = to - from; |
3be11131 | 1646 | prepare_to_modify_buffer (from, to, &from); |
0a411995 | 1647 | to = min (ZV, from + range_length); |
3be11131 RS |
1648 | } |
1649 | ||
1650 | from_byte = CHAR_TO_BYTE (from); | |
1651 | to_byte = CHAR_TO_BYTE (to); | |
1652 | ||
7dae4502 SM |
1653 | deletion = del_range_2 (from, from_byte, to, to_byte, ret_string); |
1654 | GCPRO1(deletion); | |
9c36993a | 1655 | signal_after_change (from, to - from, 0); |
233cc02d | 1656 | update_compositions (from, from, CHECK_HEAD); |
7dae4502 SM |
1657 | UNGCPRO; |
1658 | return deletion; | |
3be11131 RS |
1659 | } |
1660 | ||
1661 | /* Like del_range_1 but args are byte positions, not char positions. */ | |
1662 | ||
1663 | void | |
ae19ba7c | 1664 | del_range_byte (EMACS_INT from_byte, EMACS_INT to_byte, int prepare) |
3be11131 | 1665 | { |
ae19ba7c | 1666 | EMACS_INT from, to; |
3be11131 RS |
1667 | |
1668 | /* Make args be valid */ | |
1669 | if (from_byte < BEGV_BYTE) | |
1670 | from_byte = BEGV_BYTE; | |
1671 | if (to_byte > ZV_BYTE) | |
1672 | to_byte = ZV_BYTE; | |
1673 | ||
1674 | if (to_byte <= from_byte) | |
1675 | return; | |
1676 | ||
1677 | from = BYTE_TO_CHAR (from_byte); | |
1678 | to = BYTE_TO_CHAR (to_byte); | |
b45433b3 | 1679 | |
d206af14 RS |
1680 | if (prepare) |
1681 | { | |
ae19ba7c SM |
1682 | EMACS_INT old_from = from, old_to = Z - to; |
1683 | EMACS_INT range_length = to - from; | |
d206af14 RS |
1684 | prepare_to_modify_buffer (from, to, &from); |
1685 | to = from + range_length; | |
3be11131 RS |
1686 | |
1687 | if (old_from != from) | |
1688 | from_byte = CHAR_TO_BYTE (from); | |
0a411995 GM |
1689 | if (to > ZV) |
1690 | { | |
1691 | to = ZV; | |
1692 | to_byte = ZV_BYTE; | |
1693 | } | |
1694 | else if (old_to == Z - to) | |
3be11131 | 1695 | to_byte = CHAR_TO_BYTE (to); |
d206af14 RS |
1696 | } |
1697 | ||
7dae4502 | 1698 | del_range_2 (from, from_byte, to, to_byte, 0); |
9c36993a | 1699 | signal_after_change (from, to - from, 0); |
0ef71121 | 1700 | update_compositions (from, from, CHECK_HEAD); |
3be11131 RS |
1701 | } |
1702 | ||
1703 | /* Like del_range_1, but positions are specified both as charpos | |
1704 | and bytepos. */ | |
1705 | ||
1706 | void | |
ae19ba7c SM |
1707 | del_range_both (EMACS_INT from, EMACS_INT from_byte, |
1708 | EMACS_INT to, EMACS_INT to_byte, int prepare) | |
3be11131 | 1709 | { |
b45433b3 | 1710 | /* Make args be valid */ |
3be11131 RS |
1711 | if (from_byte < BEGV_BYTE) |
1712 | from_byte = BEGV_BYTE; | |
1713 | if (to_byte > ZV_BYTE) | |
1714 | to_byte = ZV_BYTE; | |
1715 | ||
1716 | if (to_byte <= from_byte) | |
1717 | return; | |
1718 | ||
b45433b3 JB |
1719 | if (from < BEGV) |
1720 | from = BEGV; | |
1721 | if (to > ZV) | |
1722 | to = ZV; | |
1723 | ||
3be11131 RS |
1724 | if (prepare) |
1725 | { | |
ae19ba7c SM |
1726 | EMACS_INT old_from = from, old_to = Z - to; |
1727 | EMACS_INT range_length = to - from; | |
3be11131 RS |
1728 | prepare_to_modify_buffer (from, to, &from); |
1729 | to = from + range_length; | |
1730 | ||
1731 | if (old_from != from) | |
1732 | from_byte = CHAR_TO_BYTE (from); | |
0a411995 GM |
1733 | if (to > ZV) |
1734 | { | |
1735 | to = ZV; | |
1736 | to_byte = ZV_BYTE; | |
1737 | } | |
1738 | else if (old_to == Z - to) | |
3be11131 RS |
1739 | to_byte = CHAR_TO_BYTE (to); |
1740 | } | |
1741 | ||
7dae4502 | 1742 | del_range_2 (from, from_byte, to, to_byte, 0); |
9c36993a | 1743 | signal_after_change (from, to - from, 0); |
0ef71121 | 1744 | update_compositions (from, from, CHECK_HEAD); |
3be11131 RS |
1745 | } |
1746 | ||
1747 | /* Delete a range of text, specified both as character positions | |
1748 | and byte positions. FROM and TO are character positions, | |
7dae4502 SM |
1749 | while FROM_BYTE and TO_BYTE are byte positions. |
1750 | If RET_STRING is true, the deleted area is returned as a string. */ | |
3be11131 | 1751 | |
7dae4502 | 1752 | Lisp_Object |
ae19ba7c SM |
1753 | del_range_2 (EMACS_INT from, EMACS_INT from_byte, |
1754 | EMACS_INT to, EMACS_INT to_byte, int ret_string) | |
3be11131 | 1755 | { |
ae19ba7c | 1756 | register EMACS_INT nbytes_del, nchars_del; |
628cea90 | 1757 | Lisp_Object deletion; |
3be11131 | 1758 | |
60ea6052 RS |
1759 | CHECK_MARKERS (); |
1760 | ||
3be11131 RS |
1761 | nchars_del = to - from; |
1762 | nbytes_del = to_byte - from_byte; | |
b45433b3 JB |
1763 | |
1764 | /* Make sure the gap is somewhere in or next to what we are deleting. */ | |
1765 | if (from > GPT) | |
3be11131 | 1766 | gap_right (from, from_byte); |
b45433b3 | 1767 | if (to < GPT) |
3be11131 | 1768 | gap_left (to, to_byte, 0); |
b45433b3 | 1769 | |
b16afa45 KH |
1770 | #ifdef BYTE_COMBINING_DEBUG |
1771 | if (count_combining_before (BUF_BYTE_ADDRESS (current_buffer, to_byte), | |
1772 | Z_BYTE - to_byte, from, from_byte)) | |
1773 | abort (); | |
1774 | #endif | |
628cea90 | 1775 | |
4b4deea2 | 1776 | if (ret_string || ! EQ (BVAR (current_buffer, undo_list), Qt)) |
b16afa45 | 1777 | deletion = make_buffer_string_both (from, from_byte, to, to_byte, 1); |
7dae4502 SM |
1778 | else |
1779 | deletion = Qnil; | |
1780 | ||
8948d317 RS |
1781 | /* Relocate all markers pointing into the new, larger gap |
1782 | to point at the end of the text before the gap. | |
3be11131 RS |
1783 | Do this before recording the deletion, |
1784 | so that undo handles this after reinserting the text. */ | |
1785 | adjust_markers_for_delete (from, from_byte, to, to_byte); | |
b16afa45 | 1786 | |
4b4deea2 | 1787 | if (! EQ (BVAR (current_buffer, undo_list), Qt)) |
b16afa45 | 1788 | record_delete (from, deletion); |
be09561e | 1789 | MODIFF++; |
3e145152 | 1790 | CHARS_MODIFF = MODIFF; |
be09561e | 1791 | |
b45433b3 | 1792 | /* Relocate point as if it were a marker. */ |
2bcaed71 | 1793 | if (from < PT) |
3be11131 RS |
1794 | adjust_point (from - (PT < to ? PT : to), |
1795 | from_byte - (PT_BYTE < to_byte ? PT_BYTE : to_byte)); | |
b45433b3 | 1796 | |
3be11131 | 1797 | offset_intervals (current_buffer, from, - nchars_del); |
16032db6 | 1798 | |
adde4858 | 1799 | /* Adjust the overlay center as needed. This must be done after |
a7f38d28 | 1800 | adjusting the markers that bound the overlays. */ |
e3a87305 | 1801 | adjust_overlays_for_delete (from, nchars_del); |
adde4858 | 1802 | |
3be11131 RS |
1803 | GAP_SIZE += nbytes_del; |
1804 | ZV_BYTE -= nbytes_del; | |
1805 | Z_BYTE -= nbytes_del; | |
1806 | ZV -= nchars_del; | |
1807 | Z -= nchars_del; | |
b45433b3 | 1808 | GPT = from; |
3be11131 | 1809 | GPT_BYTE = from_byte; |
b3b58c01 AS |
1810 | if (GAP_SIZE > 0 && !current_buffer->text->inhibit_shrinking) |
1811 | /* Put an anchor, unless called from decode_coding_object which | |
1812 | needs to access the previous gap contents. */ | |
1813 | *(GPT_ADDR) = 0; | |
e3a87305 | 1814 | |
3be11131 RS |
1815 | if (GPT_BYTE < GPT) |
1816 | abort (); | |
1817 | ||
a50df55b GM |
1818 | if (GPT - BEG < BEG_UNCHANGED) |
1819 | BEG_UNCHANGED = GPT - BEG; | |
1820 | if (Z - GPT < END_UNCHANGED) | |
1821 | END_UNCHANGED = Z - GPT; | |
b45433b3 | 1822 | |
60ea6052 RS |
1823 | CHECK_MARKERS (); |
1824 | ||
d386034e | 1825 | evaporate_overlays (from); |
7dae4502 SM |
1826 | |
1827 | return deletion; | |
b45433b3 JB |
1828 | } |
1829 | \f | |
3be11131 RS |
1830 | /* Call this if you're about to change the region of BUFFER from |
1831 | character positions START to END. This checks the read-only | |
1832 | properties of the region, calls the necessary modification hooks, | |
1833 | and warns the next redisplay that it should pay attention to that | |
3e145152 CY |
1834 | area. |
1835 | ||
1836 | If PRESERVE_CHARS_MODIFF is non-zero, do not update CHARS_MODIFF. | |
1837 | Otherwise set CHARS_MODIFF to the new value of MODIFF. */ | |
3be11131 | 1838 | |
c660b094 | 1839 | void |
ae19ba7c SM |
1840 | modify_region (struct buffer *buffer, EMACS_INT start, EMACS_INT end, |
1841 | int preserve_chars_modiff) | |
b45433b3 | 1842 | { |
04a759c8 JB |
1843 | struct buffer *old_buffer = current_buffer; |
1844 | ||
1845 | if (buffer != old_buffer) | |
1846 | set_buffer_internal (buffer); | |
1847 | ||
d206af14 | 1848 | prepare_to_modify_buffer (start, end, NULL); |
b45433b3 | 1849 | |
a50df55b | 1850 | BUF_COMPUTE_UNCHANGED (buffer, start - 1, end); |
83010cd6 | 1851 | |
9fbf87cd | 1852 | if (MODIFF <= SAVE_MODIFF) |
83010cd6 | 1853 | record_first_change (); |
b45433b3 | 1854 | MODIFF++; |
3e145152 CY |
1855 | if (! preserve_chars_modiff) |
1856 | CHARS_MODIFF = MODIFF; | |
04a759c8 | 1857 | |
4b4deea2 | 1858 | BVAR (buffer, point_before_scroll) = Qnil; |
069cdc4f | 1859 | |
04a759c8 JB |
1860 | if (buffer != old_buffer) |
1861 | set_buffer_internal (old_buffer); | |
b45433b3 | 1862 | } |
d206af14 | 1863 | \f |
3be11131 RS |
1864 | /* Check that it is okay to modify the buffer between START and END, |
1865 | which are char positions. | |
1866 | ||
679194a6 JA |
1867 | Run the before-change-function, if any. If intervals are in use, |
1868 | verify that the text to be modified is not read-only, and call | |
d206af14 RS |
1869 | any modification properties the text may have. |
1870 | ||
1871 | If PRESERVE_PTR is nonzero, we relocate *PRESERVE_PTR | |
1872 | by holding its value temporarily in a marker. */ | |
b45433b3 | 1873 | |
c660b094 | 1874 | void |
9628fed7 SM |
1875 | prepare_to_modify_buffer (EMACS_INT start, EMACS_INT end, |
1876 | EMACS_INT *preserve_ptr) | |
b45433b3 | 1877 | { |
234fb773 CY |
1878 | struct buffer *base_buffer; |
1879 | ||
4b4deea2 | 1880 | if (!NILP (BVAR (current_buffer, read_only))) |
b45433b3 JB |
1881 | Fbarf_if_buffer_read_only (); |
1882 | ||
2e9f55fd GM |
1883 | /* Let redisplay consider other windows than selected_window |
1884 | if modifying another buffer. */ | |
1885 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) | |
1886 | ++windows_or_buffers_changed; | |
1887 | ||
9fbf87cd | 1888 | if (BUF_INTERVALS (current_buffer) != 0) |
d206af14 RS |
1889 | { |
1890 | if (preserve_ptr) | |
1891 | { | |
1892 | Lisp_Object preserve_marker; | |
1893 | struct gcpro gcpro1; | |
1894 | preserve_marker = Fcopy_marker (make_number (*preserve_ptr), Qnil); | |
1895 | GCPRO1 (preserve_marker); | |
1896 | verify_interval_modification (current_buffer, start, end); | |
1897 | *preserve_ptr = marker_position (preserve_marker); | |
dab0b04d | 1898 | unchain_marker (XMARKER (preserve_marker)); |
d206af14 RS |
1899 | UNGCPRO; |
1900 | } | |
1901 | else | |
1902 | verify_interval_modification (current_buffer, start, end); | |
1903 | } | |
b45433b3 | 1904 | |
234fb773 CY |
1905 | /* For indirect buffers, use the base buffer to check clashes. */ |
1906 | if (current_buffer->base_buffer != 0) | |
1907 | base_buffer = current_buffer->base_buffer; | |
1908 | else | |
1909 | base_buffer = current_buffer; | |
1910 | ||
b45433b3 | 1911 | #ifdef CLASH_DETECTION |
4b4deea2 | 1912 | if (!NILP (BVAR (base_buffer, file_truename)) |
ab6c5c0c | 1913 | /* Make binding buffer-file-name to nil effective. */ |
4b4deea2 | 1914 | && !NILP (BVAR (base_buffer, filename)) |
9fbf87cd | 1915 | && SAVE_MODIFF >= MODIFF) |
4b4deea2 | 1916 | lock_file (BVAR (base_buffer, file_truename)); |
b45433b3 JB |
1917 | #else |
1918 | /* At least warn if this file has changed on disk since it was visited. */ | |
4b4deea2 | 1919 | if (!NILP (BVAR (base_buffer, filename)) |
9fbf87cd | 1920 | && SAVE_MODIFF >= MODIFF |
d427b66a | 1921 | && NILP (Fverify_visited_file_modtime (Fcurrent_buffer ())) |
4b4deea2 | 1922 | && !NILP (Ffile_exists_p (BVAR (base_buffer, filename)))) |
b45433b3 | 1923 | call1 (intern ("ask-user-about-supersession-threat"), |
4b4deea2 | 1924 | BVAR (base_buffer,filename)); |
b45433b3 JB |
1925 | #endif /* not CLASH_DETECTION */ |
1926 | ||
9852377f | 1927 | /* If `select-active-regions' is non-nil, save the region text. */ |
4b4deea2 | 1928 | if (!NILP (BVAR (current_buffer, mark_active)) |
8b78d5e3 | 1929 | && !inhibit_modification_hooks |
4b4deea2 | 1930 | && XMARKER (BVAR (current_buffer, mark))->buffer |
7c23dd44 CY |
1931 | && NILP (Vsaved_region_selection) |
1932 | && (EQ (Vselect_active_regions, Qonly) | |
1933 | ? EQ (CAR_SAFE (Vtransient_mark_mode), Qonly) | |
1934 | : (!NILP (Vselect_active_regions) | |
1935 | && !NILP (Vtransient_mark_mode)))) | |
9852377f | 1936 | { |
4b4deea2 | 1937 | EMACS_INT b = XMARKER (BVAR (current_buffer, mark))->charpos; |
413d18e7 | 1938 | EMACS_INT e = PT; |
746812d9 CY |
1939 | if (b < e) |
1940 | Vsaved_region_selection = make_buffer_string (b, e, 0); | |
1941 | else if (b > e) | |
1942 | Vsaved_region_selection = make_buffer_string (e, b, 0); | |
9852377f CY |
1943 | } |
1944 | ||
d206af14 | 1945 | signal_before_change (start, end, preserve_ptr); |
2f545eea | 1946 | |
56e1065e JB |
1947 | if (current_buffer->newline_cache) |
1948 | invalidate_region_cache (current_buffer, | |
1949 | current_buffer->newline_cache, | |
1950 | start - BEG, Z - end); | |
1951 | if (current_buffer->width_run_cache) | |
1952 | invalidate_region_cache (current_buffer, | |
1953 | current_buffer->width_run_cache, | |
1954 | start - BEG, Z - end); | |
1955 | ||
2f545eea | 1956 | Vdeactivate_mark = Qt; |
b45433b3 JB |
1957 | } |
1958 | \f | |
d206af14 RS |
1959 | /* These macros work with an argument named `preserve_ptr' |
1960 | and a local variable named `preserve_marker'. */ | |
1961 | ||
1962 | #define PRESERVE_VALUE \ | |
1963 | if (preserve_ptr && NILP (preserve_marker)) \ | |
1964 | preserve_marker = Fcopy_marker (make_number (*preserve_ptr), Qnil) | |
1965 | ||
1966 | #define RESTORE_VALUE \ | |
1967 | if (! NILP (preserve_marker)) \ | |
1968 | { \ | |
1969 | *preserve_ptr = marker_position (preserve_marker); \ | |
dab0b04d | 1970 | unchain_marker (XMARKER (preserve_marker)); \ |
d206af14 RS |
1971 | } |
1972 | ||
b86e0aaf RS |
1973 | #define PRESERVE_START_END \ |
1974 | if (NILP (start_marker)) \ | |
1975 | start_marker = Fcopy_marker (start, Qnil); \ | |
1976 | if (NILP (end_marker)) \ | |
1977 | end_marker = Fcopy_marker (end, Qnil); | |
1978 | ||
1979 | #define FETCH_START \ | |
1980 | (! NILP (start_marker) ? Fmarker_position (start_marker) : start) | |
1981 | ||
1982 | #define FETCH_END \ | |
1983 | (! NILP (end_marker) ? Fmarker_position (end_marker) : end) | |
1984 | ||
4a181359 | 1985 | /* Set a variable to nil if an error occurred. |
e6d3f090 SM |
1986 | Don't change the variable if there was no error. |
1987 | VAL is a cons-cell (VARIABLE . NO-ERROR-FLAG). | |
1988 | VARIABLE is the variable to maybe set to nil. | |
1989 | NO-ERROR-FLAG is nil if there was an error, | |
1990 | anything else meaning no error (so this function does nothing). */ | |
85876d07 | 1991 | static Lisp_Object |
971de7fb | 1992 | reset_var_on_error (Lisp_Object val) |
4a181359 SM |
1993 | { |
1994 | if (NILP (XCDR (val))) | |
1995 | Fset (XCAR (val), Qnil); | |
1996 | return Qnil; | |
1997 | } | |
1998 | ||
eb8c3be9 | 1999 | /* Signal a change to the buffer immediately before it happens. |
d206af14 RS |
2000 | START_INT and END_INT are the bounds of the text to be changed. |
2001 | ||
2002 | If PRESERVE_PTR is nonzero, we relocate *PRESERVE_PTR | |
2003 | by holding its value temporarily in a marker. */ | |
b45433b3 | 2004 | |
4889fc82 | 2005 | static void |
ae19ba7c | 2006 | signal_before_change (EMACS_INT start_int, EMACS_INT end_int, |
9628fed7 | 2007 | EMACS_INT *preserve_ptr) |
b45433b3 | 2008 | { |
fb4ee5cd | 2009 | Lisp_Object start, end; |
b86e0aaf | 2010 | Lisp_Object start_marker, end_marker; |
d206af14 | 2011 | Lisp_Object preserve_marker; |
b86e0aaf | 2012 | struct gcpro gcpro1, gcpro2, gcpro3; |
4a181359 | 2013 | int count = SPECPDL_INDEX (); |
fb4ee5cd | 2014 | |
fd16a4c6 KH |
2015 | if (inhibit_modification_hooks) |
2016 | return; | |
2017 | ||
fb4ee5cd RS |
2018 | start = make_number (start_int); |
2019 | end = make_number (end_int); | |
d206af14 | 2020 | preserve_marker = Qnil; |
b86e0aaf RS |
2021 | start_marker = Qnil; |
2022 | end_marker = Qnil; | |
2023 | GCPRO3 (preserve_marker, start_marker, end_marker); | |
fb4ee5cd | 2024 | |
4a181359 SM |
2025 | specbind (Qinhibit_modification_hooks, Qt); |
2026 | ||
dee091a3 JD |
2027 | /* If buffer is unmodified, run a special hook for that case. The |
2028 | check for Vfirst_change_hook is just a minor optimization. */ | |
9fbf87cd | 2029 | if (SAVE_MODIFF >= MODIFF |
dee091a3 | 2030 | && !NILP (Vfirst_change_hook)) |
d206af14 RS |
2031 | { |
2032 | PRESERVE_VALUE; | |
b86e0aaf | 2033 | PRESERVE_START_END; |
dee091a3 | 2034 | Frun_hooks (1, &Qfirst_change_hook); |
d206af14 | 2035 | } |
dbc4e1c1 | 2036 | |
3d1e2d9c | 2037 | /* Now run the before-change-functions if any. */ |
e45fb8bf RS |
2038 | if (!NILP (Vbefore_change_functions)) |
2039 | { | |
3d1e2d9c | 2040 | Lisp_Object args[3]; |
4a181359 | 2041 | Lisp_Object rvoe_arg = Fcons (Qbefore_change_functions, Qnil); |
3d1e2d9c | 2042 | |
d206af14 | 2043 | PRESERVE_VALUE; |
b86e0aaf | 2044 | PRESERVE_START_END; |
d206af14 | 2045 | |
4a181359 SM |
2046 | /* Mark before-change-functions to be reset to nil in case of error. */ |
2047 | record_unwind_protect (reset_var_on_error, rvoe_arg); | |
3d1e2d9c RS |
2048 | |
2049 | /* Actually run the hook functions. */ | |
2050 | args[0] = Qbefore_change_functions; | |
b86e0aaf RS |
2051 | args[1] = FETCH_START; |
2052 | args[2] = FETCH_END; | |
4a181359 | 2053 | Frun_hook_with_args (3, args); |
3d1e2d9c | 2054 | |
4a181359 SM |
2055 | /* There was no error: unarm the reset_on_error. */ |
2056 | XSETCDR (rvoe_arg, Qt); | |
e45fb8bf | 2057 | } |
d07c0804 | 2058 | |
fbebdf81 | 2059 | if (current_buffer->overlays_before || current_buffer->overlays_after) |
d206af14 RS |
2060 | { |
2061 | PRESERVE_VALUE; | |
b86e0aaf RS |
2062 | report_overlay_modification (FETCH_START, FETCH_END, 0, |
2063 | FETCH_START, FETCH_END, Qnil); | |
d206af14 RS |
2064 | } |
2065 | ||
b86e0aaf RS |
2066 | if (! NILP (start_marker)) |
2067 | free_marker (start_marker); | |
2068 | if (! NILP (end_marker)) | |
2069 | free_marker (end_marker); | |
d206af14 RS |
2070 | RESTORE_VALUE; |
2071 | UNGCPRO; | |
4a181359 SM |
2072 | |
2073 | unbind_to (count, Qnil); | |
b45433b3 JB |
2074 | } |
2075 | ||
eb8c3be9 | 2076 | /* Signal a change immediately after it happens. |
3be11131 | 2077 | CHARPOS is the character position of the start of the changed text. |
b45433b3 JB |
2078 | LENDEL is the number of characters of the text before the change. |
2079 | (Not the whole buffer; just the part that was changed.) | |
8b09e5d0 RS |
2080 | LENINS is the number of characters in that part of the text |
2081 | after the change. */ | |
b45433b3 | 2082 | |
c660b094 | 2083 | void |
ae19ba7c | 2084 | signal_after_change (EMACS_INT charpos, EMACS_INT lendel, EMACS_INT lenins) |
b45433b3 | 2085 | { |
4a181359 | 2086 | int count = SPECPDL_INDEX (); |
fd16a4c6 KH |
2087 | if (inhibit_modification_hooks) |
2088 | return; | |
2089 | ||
fb2e7d14 RS |
2090 | /* If we are deferring calls to the after-change functions |
2091 | and there are no before-change functions, | |
2092 | just record the args that we were going to use. */ | |
2093 | if (! NILP (Vcombine_after_change_calls) | |
1675d086 | 2094 | && NILP (Vbefore_change_functions) |
fbebdf81 SM |
2095 | && !current_buffer->overlays_before |
2096 | && !current_buffer->overlays_after) | |
fb2e7d14 RS |
2097 | { |
2098 | Lisp_Object elt; | |
2099 | ||
2100 | if (!NILP (combine_after_change_list) | |
2101 | && current_buffer != XBUFFER (combine_after_change_buffer)) | |
2102 | Fcombine_after_change_execute (); | |
2103 | ||
3be11131 RS |
2104 | elt = Fcons (make_number (charpos - BEG), |
2105 | Fcons (make_number (Z - (charpos - lendel + lenins)), | |
fb2e7d14 RS |
2106 | Fcons (make_number (lenins - lendel), Qnil))); |
2107 | combine_after_change_list | |
2108 | = Fcons (elt, combine_after_change_list); | |
2109 | combine_after_change_buffer = Fcurrent_buffer (); | |
2110 | ||
2111 | return; | |
2112 | } | |
2113 | ||
177c0ea7 | 2114 | if (!NILP (combine_after_change_list)) |
fb2e7d14 RS |
2115 | Fcombine_after_change_execute (); |
2116 | ||
4a181359 SM |
2117 | specbind (Qinhibit_modification_hooks, Qt); |
2118 | ||
e45fb8bf RS |
2119 | if (!NILP (Vafter_change_functions)) |
2120 | { | |
3d1e2d9c | 2121 | Lisp_Object args[4]; |
4a181359 SM |
2122 | Lisp_Object rvoe_arg = Fcons (Qafter_change_functions, Qnil); |
2123 | ||
2124 | /* Mark after-change-functions to be reset to nil in case of error. */ | |
2125 | record_unwind_protect (reset_var_on_error, rvoe_arg); | |
3d1e2d9c RS |
2126 | |
2127 | /* Actually run the hook functions. */ | |
2128 | args[0] = Qafter_change_functions; | |
3be11131 RS |
2129 | XSETFASTINT (args[1], charpos); |
2130 | XSETFASTINT (args[2], charpos + lenins); | |
3d1e2d9c | 2131 | XSETFASTINT (args[3], lendel); |
4a181359 | 2132 | Frun_hook_with_args (4, args); |
3d1e2d9c | 2133 | |
4a181359 SM |
2134 | /* There was no error: unarm the reset_on_error. */ |
2135 | XSETCDR (rvoe_arg, Qt); | |
e45fb8bf | 2136 | } |
d07c0804 | 2137 | |
fbebdf81 | 2138 | if (current_buffer->overlays_before || current_buffer->overlays_after) |
3be11131 RS |
2139 | report_overlay_modification (make_number (charpos), |
2140 | make_number (charpos + lenins), | |
d07c0804 | 2141 | 1, |
3be11131 RS |
2142 | make_number (charpos), |
2143 | make_number (charpos + lenins), | |
d07c0804 | 2144 | make_number (lendel)); |
c5ca0786 RS |
2145 | |
2146 | /* After an insertion, call the text properties | |
2147 | insert-behind-hooks or insert-in-front-hooks. */ | |
2148 | if (lendel == 0) | |
d6b81c0f AS |
2149 | report_interval_modification (make_number (charpos), |
2150 | make_number (charpos + lenins)); | |
4a181359 SM |
2151 | |
2152 | unbind_to (count, Qnil); | |
b45433b3 | 2153 | } |
fb2e7d14 | 2154 | |
85876d07 | 2155 | static Lisp_Object |
971de7fb | 2156 | Fcombine_after_change_execute_1 (Lisp_Object val) |
fb2e7d14 RS |
2157 | { |
2158 | Vcombine_after_change_calls = val; | |
2159 | return val; | |
2160 | } | |
2161 | ||
2162 | DEFUN ("combine-after-change-execute", Fcombine_after_change_execute, | |
335c5470 PJ |
2163 | Scombine_after_change_execute, 0, 0, 0, |
2164 | doc: /* This function is for use internally in `combine-after-change-calls'. */) | |
5842a27b | 2165 | (void) |
fb2e7d14 | 2166 | { |
aed13378 | 2167 | int count = SPECPDL_INDEX (); |
ae19ba7c SM |
2168 | EMACS_INT beg, end, change; |
2169 | EMACS_INT begpos, endpos; | |
fb2e7d14 RS |
2170 | Lisp_Object tail; |
2171 | ||
101e446f KH |
2172 | if (NILP (combine_after_change_list)) |
2173 | return Qnil; | |
2174 | ||
c47a9ed1 CY |
2175 | /* It is rare for combine_after_change_buffer to be invalid, but |
2176 | possible. It can happen when combine-after-change-calls is | |
2177 | non-nil, and insertion calls a file handler (e.g. through | |
2178 | lock_file) which scribbles into a temp file -- cyd */ | |
2179 | if (!BUFFERP (combine_after_change_buffer) | |
4b4deea2 | 2180 | || NILP (BVAR (XBUFFER (combine_after_change_buffer), name))) |
c47a9ed1 CY |
2181 | { |
2182 | combine_after_change_list = Qnil; | |
2183 | return Qnil; | |
2184 | } | |
2185 | ||
fb2e7d14 RS |
2186 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
2187 | ||
2188 | Fset_buffer (combine_after_change_buffer); | |
2189 | ||
2190 | /* # chars unchanged at beginning of buffer. */ | |
2191 | beg = Z - BEG; | |
2192 | /* # chars unchanged at end of buffer. */ | |
2193 | end = beg; | |
2194 | /* Total amount of insertion (negative for deletion). */ | |
2195 | change = 0; | |
2196 | ||
2197 | /* Scan the various individual changes, | |
2198 | accumulating the range info in BEG, END and CHANGE. */ | |
2199 | for (tail = combine_after_change_list; CONSP (tail); | |
03699b14 | 2200 | tail = XCDR (tail)) |
fb2e7d14 | 2201 | { |
e688a080 | 2202 | Lisp_Object elt; |
ae19ba7c | 2203 | EMACS_INT thisbeg, thisend, thischange; |
fb2e7d14 RS |
2204 | |
2205 | /* Extract the info from the next element. */ | |
03699b14 | 2206 | elt = XCAR (tail); |
fb2e7d14 RS |
2207 | if (! CONSP (elt)) |
2208 | continue; | |
03699b14 | 2209 | thisbeg = XINT (XCAR (elt)); |
fb2e7d14 | 2210 | |
03699b14 | 2211 | elt = XCDR (elt); |
fb2e7d14 RS |
2212 | if (! CONSP (elt)) |
2213 | continue; | |
03699b14 | 2214 | thisend = XINT (XCAR (elt)); |
fb2e7d14 | 2215 | |
03699b14 | 2216 | elt = XCDR (elt); |
fb2e7d14 RS |
2217 | if (! CONSP (elt)) |
2218 | continue; | |
03699b14 | 2219 | thischange = XINT (XCAR (elt)); |
fb2e7d14 RS |
2220 | |
2221 | /* Merge this range into the accumulated range. */ | |
2222 | change += thischange; | |
2223 | if (thisbeg < beg) | |
2224 | beg = thisbeg; | |
2225 | if (thisend < end) | |
2226 | end = thisend; | |
2227 | } | |
2228 | ||
2229 | /* Get the current start and end positions of the range | |
2230 | that was changed. */ | |
2231 | begpos = BEG + beg; | |
2232 | endpos = Z - end; | |
177c0ea7 | 2233 | |
fb2e7d14 RS |
2234 | /* We are about to handle these, so discard them. */ |
2235 | combine_after_change_list = Qnil; | |
2236 | ||
2237 | /* Now run the after-change functions for real. | |
2238 | Turn off the flag that defers them. */ | |
2239 | record_unwind_protect (Fcombine_after_change_execute_1, | |
2240 | Vcombine_after_change_calls); | |
2241 | signal_after_change (begpos, endpos - begpos - change, endpos - begpos); | |
0ef71121 | 2242 | update_compositions (begpos, endpos, CHECK_ALL); |
fb2e7d14 | 2243 | |
101e446f | 2244 | return unbind_to (count, Qnil); |
fb2e7d14 RS |
2245 | } |
2246 | \f | |
dfcf069d | 2247 | void |
971de7fb | 2248 | syms_of_insdel (void) |
fb2e7d14 RS |
2249 | { |
2250 | staticpro (&combine_after_change_list); | |
bf0bf758 | 2251 | staticpro (&combine_after_change_buffer); |
fb2e7d14 | 2252 | combine_after_change_list = Qnil; |
101e446f | 2253 | combine_after_change_buffer = Qnil; |
fb2e7d14 | 2254 | |
29208e82 | 2255 | DEFVAR_BOOL ("check-markers-debug-flag", check_markers_debug_flag, |
335c5470 | 2256 | doc: /* Non-nil means enable debugging checks for invalid marker positions. */); |
60ea6052 | 2257 | check_markers_debug_flag = 0; |
29208e82 | 2258 | DEFVAR_LISP ("combine-after-change-calls", Vcombine_after_change_calls, |
335c5470 | 2259 | doc: /* Used internally by the `combine-after-change-calls' macro. */); |
fb2e7d14 RS |
2260 | Vcombine_after_change_calls = Qnil; |
2261 | ||
29208e82 | 2262 | DEFVAR_BOOL ("inhibit-modification-hooks", inhibit_modification_hooks, |
335c5470 PJ |
2263 | doc: /* Non-nil means don't run any of the hooks that respond to buffer changes. |
2264 | This affects `before-change-functions' and `after-change-functions', | |
2265 | as well as hooks attached to text properties and overlays. */); | |
7baf49cf | 2266 | inhibit_modification_hooks = 0; |
d67b4f80 | 2267 | Qinhibit_modification_hooks = intern_c_string ("inhibit-modification-hooks"); |
27ea0af2 | 2268 | staticpro (&Qinhibit_modification_hooks); |
7baf49cf | 2269 | |
fb2e7d14 RS |
2270 | defsubr (&Scombine_after_change_execute); |
2271 | } |