Commit | Line | Data |
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1ab256cb | 1 | /* Buffer manipulation primitives for GNU Emacs. |
ac869cf7 | 2 | Copyright (C) 1985,86,87,88,89,93,94,95,97,98, 1999, 2000 |
c922bc55 | 3 | Free Software Foundation, Inc. |
1ab256cb RM |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
c922bc55 | 9 | the Free Software Foundation; either version 2, or (at your option) |
1ab256cb RM |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
1ab256cb | 21 | |
68c45bf0 | 22 | #include <config.h> |
1ab256cb | 23 | |
2381d133 JB |
24 | #include <sys/types.h> |
25 | #include <sys/stat.h> | |
1ab256cb | 26 | #include <sys/param.h> |
9dde47f5 | 27 | #include <errno.h> |
15e7873a | 28 | #include <stdio.h> |
9dde47f5 | 29 | |
2538fae4 | 30 | #ifndef USE_CRT_DLL |
9dde47f5 | 31 | extern int errno; |
2538fae4 | 32 | #endif |
1ab256cb RM |
33 | |
34 | #ifndef MAXPATHLEN | |
35 | /* in 4.1, param.h fails to define this. */ | |
36 | #define MAXPATHLEN 1024 | |
37 | #endif /* not MAXPATHLEN */ | |
38 | ||
dfcf069d AS |
39 | #ifdef HAVE_UNISTD_H |
40 | #include <unistd.h> | |
41 | #endif | |
1ab256cb | 42 | #include "lisp.h" |
21cf4cf8 | 43 | #include "intervals.h" |
1ab256cb RM |
44 | #include "window.h" |
45 | #include "commands.h" | |
46 | #include "buffer.h" | |
3b06f880 | 47 | #include "charset.h" |
28e969dd | 48 | #include "region-cache.h" |
1ab256cb | 49 | #include "indent.h" |
d014bf88 | 50 | #include "blockinput.h" |
2538fae4 | 51 | #include "keyboard.h" |
08460cd4 | 52 | #include "frame.h" |
1ab256cb RM |
53 | |
54 | struct buffer *current_buffer; /* the current buffer */ | |
55 | ||
56 | /* First buffer in chain of all buffers (in reverse order of creation). | |
57 | Threaded through ->next. */ | |
58 | ||
59 | struct buffer *all_buffers; | |
60 | ||
61 | /* This structure holds the default values of the buffer-local variables | |
62 | defined with DEFVAR_PER_BUFFER, that have special slots in each buffer. | |
63 | The default value occupies the same slot in this structure | |
64 | as an individual buffer's value occupies in that buffer. | |
65 | Setting the default value also goes through the alist of buffers | |
66 | and stores into each buffer that does not say it has a local value. */ | |
67 | ||
68 | struct buffer buffer_defaults; | |
69 | ||
70 | /* A Lisp_Object pointer to the above, used for staticpro */ | |
71 | ||
72 | static Lisp_Object Vbuffer_defaults; | |
73 | ||
74 | /* This structure marks which slots in a buffer have corresponding | |
75 | default values in buffer_defaults. | |
76 | Each such slot has a nonzero value in this structure. | |
77 | The value has only one nonzero bit. | |
78 | ||
79 | When a buffer has its own local value for a slot, | |
7c02e886 GM |
80 | the entry for that slot (found in the same slot in this structure) |
81 | is turned on in the buffer's local_flags array. | |
1ab256cb RM |
82 | |
83 | If a slot in this structure is -1, then even though there may | |
84 | be a DEFVAR_PER_BUFFER for the slot, there is no default value for it; | |
85 | and the corresponding slot in buffer_defaults is not used. | |
86 | ||
87 | If a slot is -2, then there is no DEFVAR_PER_BUFFER for it, | |
88 | but there is a default value which is copied into each buffer. | |
89 | ||
90 | If a slot in this structure is negative, then even though there may | |
91 | be a DEFVAR_PER_BUFFER for the slot, there is no default value for it; | |
92 | and the corresponding slot in buffer_defaults is not used. | |
93 | ||
94 | If a slot in this structure corresponding to a DEFVAR_PER_BUFFER is | |
95 | zero, that is a bug */ | |
96 | ||
97 | struct buffer buffer_local_flags; | |
98 | ||
99 | /* This structure holds the names of symbols whose values may be | |
100 | buffer-local. It is indexed and accessed in the same way as the above. */ | |
101 | ||
102 | struct buffer buffer_local_symbols; | |
103 | /* A Lisp_Object pointer to the above, used for staticpro */ | |
104 | static Lisp_Object Vbuffer_local_symbols; | |
105 | ||
0fa3ba92 JB |
106 | /* This structure holds the required types for the values in the |
107 | buffer-local slots. If a slot contains Qnil, then the | |
108 | corresponding buffer slot may contain a value of any type. If a | |
109 | slot contains an integer, then prospective values' tags must be | |
1bf08baf KH |
110 | equal to that integer (except nil is always allowed). |
111 | When a tag does not match, the function | |
112 | buffer_slot_type_mismatch will signal an error. | |
113 | ||
114 | If a slot here contains -1, the corresponding variable is read-only. */ | |
0fa3ba92 JB |
115 | struct buffer buffer_local_types; |
116 | ||
13de9290 RS |
117 | /* Flags indicating which built-in buffer-local variables |
118 | are permanent locals. */ | |
7313acd0 | 119 | static char buffer_permanent_local_flags[MAX_PER_BUFFER_VARS]; |
7c02e886 GM |
120 | |
121 | /* Number of per-buffer variables used. */ | |
122 | ||
7313acd0 | 123 | int last_per_buffer_idx; |
13de9290 | 124 | |
1ab256cb | 125 | Lisp_Object Fset_buffer (); |
01050cb5 | 126 | void set_buffer_internal (); |
c7aa5005 | 127 | void set_buffer_internal_1 (); |
173f2a64 | 128 | static void call_overlay_mod_hooks (); |
2f3f993b | 129 | static void swap_out_buffer_local_variables (); |
13de9290 | 130 | static void reset_buffer_local_variables (); |
1ab256cb RM |
131 | |
132 | /* Alist of all buffer names vs the buffers. */ | |
133 | /* This used to be a variable, but is no longer, | |
134 | to prevent lossage due to user rplac'ing this alist or its elements. */ | |
135 | Lisp_Object Vbuffer_alist; | |
136 | ||
137 | /* Functions to call before and after each text change. */ | |
5f079267 RS |
138 | Lisp_Object Vbefore_change_functions; |
139 | Lisp_Object Vafter_change_functions; | |
1ab256cb | 140 | |
c48f61ef RS |
141 | Lisp_Object Vtransient_mark_mode; |
142 | ||
a96b68f1 RS |
143 | /* t means ignore all read-only text properties. |
144 | A list means ignore such a property if its value is a member of the list. | |
145 | Any non-nil value means ignore buffer-read-only. */ | |
146 | Lisp_Object Vinhibit_read_only; | |
147 | ||
dcdffbf6 RS |
148 | /* List of functions to call that can query about killing a buffer. |
149 | If any of these functions returns nil, we don't kill it. */ | |
150 | Lisp_Object Vkill_buffer_query_functions; | |
151 | ||
dbc4e1c1 JB |
152 | /* List of functions to call before changing an unmodified buffer. */ |
153 | Lisp_Object Vfirst_change_hook; | |
22378665 | 154 | |
dbc4e1c1 | 155 | Lisp_Object Qfirst_change_hook; |
22378665 RS |
156 | Lisp_Object Qbefore_change_functions; |
157 | Lisp_Object Qafter_change_functions; | |
1ab256cb | 158 | |
7775635d KH |
159 | /* If nonzero, all modification hooks are suppressed. */ |
160 | int inhibit_modification_hooks; | |
161 | ||
1ab256cb RM |
162 | Lisp_Object Qfundamental_mode, Qmode_class, Qpermanent_local; |
163 | ||
164 | Lisp_Object Qprotected_field; | |
165 | ||
166 | Lisp_Object QSFundamental; /* A string "Fundamental" */ | |
167 | ||
168 | Lisp_Object Qkill_buffer_hook; | |
169 | ||
5fe0b67e RS |
170 | Lisp_Object Qget_file_buffer; |
171 | ||
52f8ec73 JB |
172 | Lisp_Object Qoverlayp; |
173 | ||
bbbe9545 | 174 | Lisp_Object Qpriority, Qwindow, Qevaporate, Qbefore_string, Qafter_string; |
5985d248 | 175 | |
294d215f RS |
176 | Lisp_Object Qmodification_hooks; |
177 | Lisp_Object Qinsert_in_front_hooks; | |
178 | Lisp_Object Qinsert_behind_hooks; | |
179 | ||
b86af064 GM |
180 | static void alloc_buffer_text P_ ((struct buffer *, size_t)); |
181 | static void free_buffer_text P_ ((struct buffer *b)); | |
182 | ||
183 | ||
1ab256cb RM |
184 | /* For debugging; temporary. See set_buffer_internal. */ |
185 | /* Lisp_Object Qlisp_mode, Vcheck_symbol; */ | |
186 | ||
01136e9b | 187 | void |
1ab256cb RM |
188 | nsberror (spec) |
189 | Lisp_Object spec; | |
190 | { | |
a7a60ce9 | 191 | if (STRINGP (spec)) |
1ab256cb RM |
192 | error ("No buffer named %s", XSTRING (spec)->data); |
193 | error ("Invalid buffer argument"); | |
194 | } | |
195 | \f | |
0dc88e60 RS |
196 | DEFUN ("buffer-live-p", Fbuffer_live_p, Sbuffer_live_p, 1, 1, 0, |
197 | "Return non-nil if OBJECT is a buffer which has not been killed.\n\ | |
198 | Value is nil if OBJECT is not a buffer or if it has been killed.") | |
199 | (object) | |
200 | Lisp_Object object; | |
201 | { | |
202 | return ((BUFFERP (object) && ! NILP (XBUFFER (object)->name)) | |
203 | ? Qt : Qnil); | |
204 | } | |
205 | ||
08460cd4 RS |
206 | DEFUN ("buffer-list", Fbuffer_list, Sbuffer_list, 0, 1, 0, |
207 | "Return a list of all existing live buffers.\n\ | |
208 | If the optional arg FRAME is a frame, we return that frame's buffer list.") | |
209 | (frame) | |
210 | Lisp_Object frame; | |
1ab256cb | 211 | { |
08460cd4 RS |
212 | Lisp_Object framelist, general; |
213 | general = Fmapcar (Qcdr, Vbuffer_alist); | |
214 | ||
215 | if (FRAMEP (frame)) | |
216 | { | |
217 | Lisp_Object tail; | |
218 | ||
219 | CHECK_FRAME (frame, 1); | |
220 | ||
221 | framelist = Fcopy_sequence (XFRAME (frame)->buffer_list); | |
222 | ||
223 | /* Remove from GENERAL any buffer that duplicates one in FRAMELIST. */ | |
224 | tail = framelist; | |
225 | while (! NILP (tail)) | |
226 | { | |
7539e11f KR |
227 | general = Fdelq (XCAR (tail), general); |
228 | tail = XCDR (tail); | |
08460cd4 RS |
229 | } |
230 | return nconc2 (framelist, general); | |
231 | } | |
232 | ||
233 | return general; | |
1ab256cb RM |
234 | } |
235 | ||
04ae1b48 RS |
236 | /* Like Fassoc, but use Fstring_equal to compare |
237 | (which ignores text properties), | |
238 | and don't ever QUIT. */ | |
239 | ||
240 | static Lisp_Object | |
241 | assoc_ignore_text_properties (key, list) | |
242 | register Lisp_Object key; | |
243 | Lisp_Object list; | |
244 | { | |
245 | register Lisp_Object tail; | |
246 | for (tail = list; !NILP (tail); tail = Fcdr (tail)) | |
247 | { | |
248 | register Lisp_Object elt, tem; | |
249 | elt = Fcar (tail); | |
250 | tem = Fstring_equal (Fcar (elt), key); | |
251 | if (!NILP (tem)) | |
252 | return elt; | |
253 | } | |
254 | return Qnil; | |
255 | } | |
256 | ||
1ab256cb RM |
257 | DEFUN ("get-buffer", Fget_buffer, Sget_buffer, 1, 1, 0, |
258 | "Return the buffer named NAME (a string).\n\ | |
259 | If there is no live buffer named NAME, return nil.\n\ | |
260 | NAME may also be a buffer; if so, the value is that buffer.") | |
261 | (name) | |
262 | register Lisp_Object name; | |
263 | { | |
a7a60ce9 | 264 | if (BUFFERP (name)) |
1ab256cb RM |
265 | return name; |
266 | CHECK_STRING (name, 0); | |
267 | ||
04ae1b48 | 268 | return Fcdr (assoc_ignore_text_properties (name, Vbuffer_alist)); |
1ab256cb RM |
269 | } |
270 | ||
271 | DEFUN ("get-file-buffer", Fget_file_buffer, Sget_file_buffer, 1, 1, 0, | |
272 | "Return the buffer visiting file FILENAME (a string).\n\ | |
92194d02 | 273 | The buffer's `buffer-file-name' must match exactly the expansion of FILENAME.\n\ |
11da5363 RS |
274 | If there is no such live buffer, return nil.\n\ |
275 | See also `find-buffer-visiting'.") | |
1ab256cb RM |
276 | (filename) |
277 | register Lisp_Object filename; | |
278 | { | |
279 | register Lisp_Object tail, buf, tem; | |
5fe0b67e RS |
280 | Lisp_Object handler; |
281 | ||
1ab256cb RM |
282 | CHECK_STRING (filename, 0); |
283 | filename = Fexpand_file_name (filename, Qnil); | |
284 | ||
5fe0b67e RS |
285 | /* If the file name has special constructs in it, |
286 | call the corresponding file handler. */ | |
a617e913 | 287 | handler = Ffind_file_name_handler (filename, Qget_file_buffer); |
5fe0b67e RS |
288 | if (!NILP (handler)) |
289 | return call2 (handler, Qget_file_buffer, filename); | |
290 | ||
7539e11f | 291 | for (tail = Vbuffer_alist; CONSP (tail); tail = XCDR (tail)) |
1ab256cb | 292 | { |
7539e11f | 293 | buf = Fcdr (XCAR (tail)); |
a7a60ce9 KH |
294 | if (!BUFFERP (buf)) continue; |
295 | if (!STRINGP (XBUFFER (buf)->filename)) continue; | |
1ab256cb | 296 | tem = Fstring_equal (XBUFFER (buf)->filename, filename); |
265a9e55 | 297 | if (!NILP (tem)) |
1ab256cb RM |
298 | return buf; |
299 | } | |
300 | return Qnil; | |
301 | } | |
302 | ||
52e01189 RS |
303 | Lisp_Object |
304 | get_truename_buffer (filename) | |
305 | register Lisp_Object filename; | |
306 | { | |
307 | register Lisp_Object tail, buf, tem; | |
308 | ||
7539e11f | 309 | for (tail = Vbuffer_alist; CONSP (tail); tail = XCDR (tail)) |
52e01189 | 310 | { |
7539e11f | 311 | buf = Fcdr (XCAR (tail)); |
52e01189 RS |
312 | if (!BUFFERP (buf)) continue; |
313 | if (!STRINGP (XBUFFER (buf)->file_truename)) continue; | |
314 | tem = Fstring_equal (XBUFFER (buf)->file_truename, filename); | |
315 | if (!NILP (tem)) | |
316 | return buf; | |
317 | } | |
318 | return Qnil; | |
319 | } | |
320 | ||
1ab256cb RM |
321 | /* Incremented for each buffer created, to assign the buffer number. */ |
322 | int buffer_count; | |
323 | ||
324 | DEFUN ("get-buffer-create", Fget_buffer_create, Sget_buffer_create, 1, 1, 0, | |
325 | "Return the buffer named NAME, or create such a buffer and return it.\n\ | |
326 | A new buffer is created if there is no live buffer named NAME.\n\ | |
b44895bc | 327 | If NAME starts with a space, the new buffer does not keep undo information.\n\ |
1ab256cb RM |
328 | If NAME is a buffer instead of a string, then it is the value returned.\n\ |
329 | The value is never nil.") | |
330 | (name) | |
331 | register Lisp_Object name; | |
332 | { | |
a9ee7a59 | 333 | register Lisp_Object buf; |
1ab256cb RM |
334 | register struct buffer *b; |
335 | ||
336 | buf = Fget_buffer (name); | |
265a9e55 | 337 | if (!NILP (buf)) |
1ab256cb RM |
338 | return buf; |
339 | ||
31cd83e9 KH |
340 | if (XSTRING (name)->size == 0) |
341 | error ("Empty string for buffer name is not allowed"); | |
342 | ||
a21260d9 | 343 | b = (struct buffer *) allocate_buffer (); |
1ab256cb | 344 | |
336cd056 RS |
345 | b->size = sizeof (struct buffer) / sizeof (EMACS_INT); |
346 | ||
347 | /* An ordinary buffer uses its own struct buffer_text. */ | |
348 | b->text = &b->own_text; | |
349 | b->base_buffer = 0; | |
350 | ||
1ab256cb | 351 | BUF_GAP_SIZE (b) = 20; |
9ac0d9e0 | 352 | BLOCK_INPUT; |
3b06f880 KH |
353 | /* We allocate extra 1-byte at the tail and keep it always '\0' for |
354 | anchoring a search. */ | |
b86af064 | 355 | alloc_buffer_text (b, BUF_GAP_SIZE (b) + 1); |
9ac0d9e0 | 356 | UNBLOCK_INPUT; |
1ab256cb | 357 | if (! BUF_BEG_ADDR (b)) |
81841847 | 358 | buffer_memory_full (); |
1ab256cb RM |
359 | |
360 | BUF_PT (b) = 1; | |
361 | BUF_GPT (b) = 1; | |
362 | BUF_BEGV (b) = 1; | |
363 | BUF_ZV (b) = 1; | |
364 | BUF_Z (b) = 1; | |
3f236a40 RS |
365 | BUF_PT_BYTE (b) = 1; |
366 | BUF_GPT_BYTE (b) = 1; | |
367 | BUF_BEGV_BYTE (b) = 1; | |
368 | BUF_ZV_BYTE (b) = 1; | |
369 | BUF_Z_BYTE (b) = 1; | |
1ab256cb | 370 | BUF_MODIFF (b) = 1; |
2509d356 | 371 | BUF_OVERLAY_MODIFF (b) = 1; |
336cd056 RS |
372 | BUF_SAVE_MODIFF (b) = 1; |
373 | BUF_INTERVALS (b) = 0; | |
b5a225b4 GM |
374 | BUF_UNCHANGED_MODIFIED (b) = 1; |
375 | BUF_OVERLAY_UNCHANGED_MODIFIED (b) = 1; | |
376 | BUF_END_UNCHANGED (b) = 0; | |
377 | BUF_BEG_UNCHANGED (b) = 0; | |
3b06f880 | 378 | *(BUF_GPT_ADDR (b)) = *(BUF_Z_ADDR (b)) = 0; /* Put an anchor '\0'. */ |
1ab256cb | 379 | |
28e969dd JB |
380 | b->newline_cache = 0; |
381 | b->width_run_cache = 0; | |
382 | b->width_table = Qnil; | |
b5a225b4 | 383 | b->prevent_redisplay_optimizations_p = 1; |
28e969dd | 384 | |
1ab256cb RM |
385 | /* Put this on the chain of all buffers including killed ones. */ |
386 | b->next = all_buffers; | |
387 | all_buffers = b; | |
388 | ||
336cd056 RS |
389 | /* An ordinary buffer normally doesn't need markers |
390 | to handle BEGV and ZV. */ | |
391 | b->pt_marker = Qnil; | |
392 | b->begv_marker = Qnil; | |
393 | b->zv_marker = Qnil; | |
04ae1b48 RS |
394 | |
395 | name = Fcopy_sequence (name); | |
a9800ae8 | 396 | XSTRING (name)->intervals = NULL_INTERVAL; |
1ab256cb | 397 | b->name = name; |
04ae1b48 | 398 | |
1ab256cb RM |
399 | if (XSTRING (name)->data[0] != ' ') |
400 | b->undo_list = Qnil; | |
401 | else | |
402 | b->undo_list = Qt; | |
403 | ||
404 | reset_buffer (b); | |
13de9290 | 405 | reset_buffer_local_variables (b, 1); |
1ab256cb RM |
406 | |
407 | /* Put this in the alist of all live buffers. */ | |
67180c6a | 408 | XSETBUFFER (buf, b); |
1ab256cb RM |
409 | Vbuffer_alist = nconc2 (Vbuffer_alist, Fcons (Fcons (name, buf), Qnil)); |
410 | ||
411 | b->mark = Fmake_marker (); | |
336cd056 RS |
412 | BUF_MARKERS (b) = Qnil; |
413 | b->name = name; | |
414 | return buf; | |
415 | } | |
416 | ||
7e9d5818 GM |
417 | |
418 | /* Clone per-buffer values of buffer FROM. | |
419 | ||
420 | Buffer TO gets the same per-buffer values as FROM, with the | |
421 | following exceptions: (1) TO's name is left untouched, (2) markers | |
422 | are copied and made to refer to TO, and (3) overlay lists are | |
423 | copied. */ | |
424 | ||
425 | static void | |
426 | clone_per_buffer_values (from, to) | |
427 | struct buffer *from, *to; | |
428 | { | |
429 | Lisp_Object to_buffer; | |
430 | int offset; | |
431 | ||
432 | XSETBUFFER (to_buffer, to); | |
433 | ||
434 | for (offset = PER_BUFFER_VAR_OFFSET (name) + sizeof (Lisp_Object); | |
435 | offset < sizeof *to; | |
436 | offset += sizeof (Lisp_Object)) | |
437 | { | |
438 | Lisp_Object obj; | |
439 | ||
440 | obj = PER_BUFFER_VALUE (from, offset); | |
441 | if (MARKERP (obj)) | |
442 | { | |
443 | struct Lisp_Marker *m = XMARKER (obj); | |
444 | obj = Fmake_marker (); | |
445 | XMARKER (obj)->insertion_type = m->insertion_type; | |
446 | set_marker_both (obj, to_buffer, m->charpos, m->bytepos); | |
447 | } | |
448 | ||
449 | PER_BUFFER_VALUE (to, offset) = obj; | |
450 | } | |
451 | ||
452 | to->overlays_after = Fcopy_sequence (from->overlays_after); | |
453 | to->overlays_before = Fcopy_sequence (to->overlays_before); | |
454 | bcopy (from->local_flags, to->local_flags, sizeof to->local_flags); | |
455 | } | |
456 | ||
457 | ||
458 | DEFUN ("make-indirect-buffer", Fmake_indirect_buffer, Smake_indirect_buffer, | |
459 | 2, 3, | |
193c3837 | 460 | "bMake indirect buffer (to buffer): \nBName of indirect buffer: ", |
a2428fa2 EN |
461 | "Create and return an indirect buffer for buffer BASE-BUFFER, named NAME.\n\ |
462 | BASE-BUFFER should be an existing buffer (or buffer name).\n\ | |
7e9d5818 GM |
463 | NAME should be a string which is not the name of an existing buffer.\n\ |
464 | Optional argument CLONE non-nil means preserve BASE-BUFFER's state,\n\ | |
f532dca0 | 465 | such as major and minor modes, in the indirect buffer.\n\ |
7e9d5818 GM |
466 | CLONE nil means the indirect buffer's state is reset to default values.") |
467 | (base_buffer, name, clone) | |
468 | Lisp_Object base_buffer, name, clone; | |
336cd056 | 469 | { |
7e9d5818 GM |
470 | Lisp_Object buf; |
471 | struct buffer *b; | |
336cd056 RS |
472 | |
473 | buf = Fget_buffer (name); | |
474 | if (!NILP (buf)) | |
475 | error ("Buffer name `%s' is in use", XSTRING (name)->data); | |
476 | ||
477 | base_buffer = Fget_buffer (base_buffer); | |
478 | if (NILP (base_buffer)) | |
1dd6a7ad | 479 | error ("No such buffer: `%s'", XSTRING (name)->data); |
336cd056 RS |
480 | |
481 | if (XSTRING (name)->size == 0) | |
482 | error ("Empty string for buffer name is not allowed"); | |
483 | ||
a21260d9 | 484 | b = (struct buffer *) allocate_buffer (); |
336cd056 RS |
485 | b->size = sizeof (struct buffer) / sizeof (EMACS_INT); |
486 | ||
487 | if (XBUFFER (base_buffer)->base_buffer) | |
488 | b->base_buffer = XBUFFER (base_buffer)->base_buffer; | |
489 | else | |
490 | b->base_buffer = XBUFFER (base_buffer); | |
491 | ||
492 | /* Use the base buffer's text object. */ | |
493 | b->text = b->base_buffer->text; | |
494 | ||
495 | BUF_BEGV (b) = BUF_BEGV (b->base_buffer); | |
496 | BUF_ZV (b) = BUF_ZV (b->base_buffer); | |
497 | BUF_PT (b) = BUF_PT (b->base_buffer); | |
3f236a40 RS |
498 | BUF_BEGV_BYTE (b) = BUF_BEGV_BYTE (b->base_buffer); |
499 | BUF_ZV_BYTE (b) = BUF_ZV_BYTE (b->base_buffer); | |
500 | BUF_PT_BYTE (b) = BUF_PT_BYTE (b->base_buffer); | |
336cd056 RS |
501 | |
502 | b->newline_cache = 0; | |
503 | b->width_run_cache = 0; | |
504 | b->width_table = Qnil; | |
505 | ||
506 | /* Put this on the chain of all buffers including killed ones. */ | |
507 | b->next = all_buffers; | |
508 | all_buffers = b; | |
509 | ||
510 | name = Fcopy_sequence (name); | |
a9800ae8 | 511 | XSTRING (name)->intervals = NULL_INTERVAL; |
336cd056 RS |
512 | b->name = name; |
513 | ||
514 | reset_buffer (b); | |
13de9290 | 515 | reset_buffer_local_variables (b, 1); |
336cd056 RS |
516 | |
517 | /* Put this in the alist of all live buffers. */ | |
518 | XSETBUFFER (buf, b); | |
519 | Vbuffer_alist = nconc2 (Vbuffer_alist, Fcons (Fcons (name, buf), Qnil)); | |
520 | ||
521 | b->mark = Fmake_marker (); | |
1ab256cb | 522 | b->name = name; |
336cd056 | 523 | |
abc9d959 RS |
524 | /* The multibyte status belongs to the base buffer. */ |
525 | b->enable_multibyte_characters = b->base_buffer->enable_multibyte_characters; | |
526 | ||
336cd056 RS |
527 | /* Make sure the base buffer has markers for its narrowing. */ |
528 | if (NILP (b->base_buffer->pt_marker)) | |
529 | { | |
530 | b->base_buffer->pt_marker = Fmake_marker (); | |
3f236a40 RS |
531 | set_marker_both (b->base_buffer->pt_marker, base_buffer, |
532 | BUF_PT (b->base_buffer), | |
533 | BUF_PT_BYTE (b->base_buffer)); | |
336cd056 RS |
534 | } |
535 | if (NILP (b->base_buffer->begv_marker)) | |
536 | { | |
537 | b->base_buffer->begv_marker = Fmake_marker (); | |
3f236a40 RS |
538 | set_marker_both (b->base_buffer->begv_marker, base_buffer, |
539 | BUF_BEGV (b->base_buffer), | |
540 | BUF_BEGV_BYTE (b->base_buffer)); | |
336cd056 RS |
541 | } |
542 | if (NILP (b->base_buffer->zv_marker)) | |
543 | { | |
544 | b->base_buffer->zv_marker = Fmake_marker (); | |
3f236a40 RS |
545 | set_marker_both (b->base_buffer->zv_marker, base_buffer, |
546 | BUF_ZV (b->base_buffer), | |
547 | BUF_ZV_BYTE (b->base_buffer)); | |
26d84681 | 548 | XMARKER (b->base_buffer->zv_marker)->insertion_type = 1; |
336cd056 RS |
549 | } |
550 | ||
7e9d5818 GM |
551 | if (NILP (clone)) |
552 | { | |
553 | /* Give the indirect buffer markers for its narrowing. */ | |
554 | b->pt_marker = Fmake_marker (); | |
555 | set_marker_both (b->pt_marker, buf, BUF_PT (b), BUF_PT_BYTE (b)); | |
556 | b->begv_marker = Fmake_marker (); | |
557 | set_marker_both (b->begv_marker, buf, BUF_BEGV (b), BUF_BEGV_BYTE (b)); | |
558 | b->zv_marker = Fmake_marker (); | |
559 | set_marker_both (b->zv_marker, buf, BUF_ZV (b), BUF_ZV_BYTE (b)); | |
560 | XMARKER (b->zv_marker)->insertion_type = 1; | |
561 | } | |
562 | else | |
563 | clone_per_buffer_values (b->base_buffer, b); | |
336cd056 | 564 | |
a9ee7a59 | 565 | return buf; |
1ab256cb RM |
566 | } |
567 | ||
bcd40520 RS |
568 | /* Reinitialize everything about a buffer except its name and contents |
569 | and local variables. */ | |
1ab256cb RM |
570 | |
571 | void | |
572 | reset_buffer (b) | |
573 | register struct buffer *b; | |
574 | { | |
575 | b->filename = Qnil; | |
f6ed2e84 | 576 | b->file_truename = Qnil; |
1ab256cb RM |
577 | b->directory = (current_buffer) ? current_buffer->directory : Qnil; |
578 | b->modtime = 0; | |
8d7a4592 | 579 | XSETFASTINT (b->save_length, 0); |
1ab256cb | 580 | b->last_window_start = 1; |
8b264726 | 581 | /* It is more conservative to start out "changed" than "unchanged". */ |
b5a225b4 GM |
582 | b->clip_changed = 0; |
583 | b->prevent_redisplay_optimizations_p = 1; | |
1ab256cb RM |
584 | b->backed_up = Qnil; |
585 | b->auto_save_modified = 0; | |
84f6bcba | 586 | b->auto_save_failure_time = -1; |
1ab256cb RM |
587 | b->auto_save_file_name = Qnil; |
588 | b->read_only = Qnil; | |
2eec3b4e RS |
589 | b->overlays_before = Qnil; |
590 | b->overlays_after = Qnil; | |
8d7a4592 | 591 | XSETFASTINT (b->overlay_center, 1); |
dfda7a7f | 592 | b->mark_active = Qnil; |
943e065b | 593 | b->point_before_scroll = Qnil; |
be9aafdd | 594 | b->file_format = Qnil; |
0dc6f165 | 595 | b->last_selected_window = Qnil; |
7962a441 | 596 | XSETINT (b->display_count, 0); |
3fd364db | 597 | b->display_time = Qnil; |
1bf08baf | 598 | b->enable_multibyte_characters = buffer_defaults.enable_multibyte_characters; |
bb2ec976 | 599 | b->cursor_type = buffer_defaults.cursor_type; |
a3bbced0 | 600 | b->extra_line_spacing = buffer_defaults.extra_line_spacing; |
1ab256cb RM |
601 | } |
602 | ||
bcd40520 RS |
603 | /* Reset buffer B's local variables info. |
604 | Don't use this on a buffer that has already been in use; | |
605 | it does not treat permanent locals consistently. | |
13de9290 RS |
606 | Instead, use Fkill_all_local_variables. |
607 | ||
608 | If PERMANENT_TOO is 1, then we reset permanent built-in | |
609 | buffer-local variables. If PERMANENT_TOO is 0, | |
610 | we preserve those. */ | |
bcd40520 | 611 | |
13de9290 RS |
612 | static void |
613 | reset_buffer_local_variables (b, permanent_too) | |
1ab256cb | 614 | register struct buffer *b; |
13de9290 | 615 | int permanent_too; |
1ab256cb RM |
616 | { |
617 | register int offset; | |
7c02e886 | 618 | int i; |
1ab256cb RM |
619 | |
620 | /* Reset the major mode to Fundamental, together with all the | |
621 | things that depend on the major mode. | |
622 | default-major-mode is handled at a higher level. | |
623 | We ignore it here. */ | |
624 | b->major_mode = Qfundamental_mode; | |
625 | b->keymap = Qnil; | |
626 | b->abbrev_table = Vfundamental_mode_abbrev_table; | |
627 | b->mode_name = QSFundamental; | |
628 | b->minor_modes = Qnil; | |
3446af9c RS |
629 | |
630 | /* If the standard case table has been altered and invalidated, | |
631 | fix up its insides first. */ | |
632 | if (! (CHAR_TABLE_P (XCHAR_TABLE (Vascii_downcase_table)->extras[0]) | |
633 | && CHAR_TABLE_P (XCHAR_TABLE (Vascii_downcase_table)->extras[1]) | |
634 | && CHAR_TABLE_P (XCHAR_TABLE (Vascii_downcase_table)->extras[2]))) | |
635 | Fset_standard_case_table (Vascii_downcase_table); | |
636 | ||
1ab256cb | 637 | b->downcase_table = Vascii_downcase_table; |
1e9b6335 RS |
638 | b->upcase_table = XCHAR_TABLE (Vascii_downcase_table)->extras[0]; |
639 | b->case_canon_table = XCHAR_TABLE (Vascii_downcase_table)->extras[1]; | |
640 | b->case_eqv_table = XCHAR_TABLE (Vascii_downcase_table)->extras[2]; | |
3cb719bd | 641 | b->invisibility_spec = Qt; |
2e716096 RS |
642 | #ifndef DOS_NT |
643 | b->buffer_file_type = Qnil; | |
644 | #endif | |
3cb719bd | 645 | |
1ab256cb RM |
646 | #if 0 |
647 | b->sort_table = XSTRING (Vascii_sort_table); | |
648 | b->folding_sort_table = XSTRING (Vascii_folding_sort_table); | |
649 | #endif /* 0 */ | |
650 | ||
13de9290 | 651 | /* Reset all (or most) per-buffer variables to their defaults. */ |
1ab256cb | 652 | b->local_var_alist = Qnil; |
7313acd0 | 653 | for (i = 0; i < last_per_buffer_idx; ++i) |
7c02e886 | 654 | if (permanent_too || buffer_permanent_local_flags[i] == 0) |
7313acd0 | 655 | SET_PER_BUFFER_VALUE_P (b, i, 0); |
1ab256cb RM |
656 | |
657 | /* For each slot that has a default value, | |
658 | copy that into the slot. */ | |
659 | ||
7313acd0 | 660 | for (offset = PER_BUFFER_VAR_OFFSET (name); |
7c02e886 GM |
661 | offset < sizeof *b; |
662 | offset += sizeof (Lisp_Object)) | |
aab80822 | 663 | { |
7313acd0 | 664 | int idx = PER_BUFFER_IDX (offset); |
7c02e886 GM |
665 | if ((idx > 0 |
666 | && (permanent_too | |
667 | || buffer_permanent_local_flags[idx] == 0)) | |
668 | /* Is -2 used anywhere? */ | |
669 | || idx == -2) | |
7313acd0 | 670 | PER_BUFFER_VALUE (b, offset) = PER_BUFFER_DEFAULT (offset); |
aab80822 | 671 | } |
1ab256cb RM |
672 | } |
673 | ||
01050cb5 RM |
674 | /* We split this away from generate-new-buffer, because rename-buffer |
675 | and set-visited-file-name ought to be able to use this to really | |
676 | rename the buffer properly. */ | |
677 | ||
678 | DEFUN ("generate-new-buffer-name", Fgenerate_new_buffer_name, Sgenerate_new_buffer_name, | |
c273e647 | 679 | 1, 2, 0, |
01050cb5 RM |
680 | "Return a string that is the name of no existing buffer based on NAME.\n\ |
681 | If there is no live buffer named NAME, then return NAME.\n\ | |
1ab256cb | 682 | Otherwise modify name by appending `<NUMBER>', incrementing NUMBER\n\ |
c273e647 | 683 | until an unused name is found, and then return that name.\n\ |
03bdd54c | 684 | Optional second argument IGNORE specifies a name that is okay to use\n\ |
c273e647 | 685 | \(if it is in the sequence to be tried)\n\ |
e8b3a22d | 686 | even if a buffer with that name exists.") |
c273e647 RS |
687 | (name, ignore) |
688 | register Lisp_Object name, ignore; | |
1ab256cb RM |
689 | { |
690 | register Lisp_Object gentemp, tem; | |
691 | int count; | |
692 | char number[10]; | |
693 | ||
694 | CHECK_STRING (name, 0); | |
695 | ||
696 | tem = Fget_buffer (name); | |
265a9e55 | 697 | if (NILP (tem)) |
01050cb5 | 698 | return name; |
1ab256cb RM |
699 | |
700 | count = 1; | |
701 | while (1) | |
702 | { | |
703 | sprintf (number, "<%d>", ++count); | |
704 | gentemp = concat2 (name, build_string (number)); | |
638e4fc3 | 705 | tem = Fstring_equal (gentemp, ignore); |
c273e647 RS |
706 | if (!NILP (tem)) |
707 | return gentemp; | |
1ab256cb | 708 | tem = Fget_buffer (gentemp); |
265a9e55 | 709 | if (NILP (tem)) |
01050cb5 | 710 | return gentemp; |
1ab256cb RM |
711 | } |
712 | } | |
713 | ||
714 | \f | |
715 | DEFUN ("buffer-name", Fbuffer_name, Sbuffer_name, 0, 1, 0, | |
716 | "Return the name of BUFFER, as a string.\n\ | |
01050cb5 | 717 | With no argument or nil as argument, return the name of the current buffer.") |
1ab256cb RM |
718 | (buffer) |
719 | register Lisp_Object buffer; | |
720 | { | |
265a9e55 | 721 | if (NILP (buffer)) |
1ab256cb RM |
722 | return current_buffer->name; |
723 | CHECK_BUFFER (buffer, 0); | |
724 | return XBUFFER (buffer)->name; | |
725 | } | |
726 | ||
727 | DEFUN ("buffer-file-name", Fbuffer_file_name, Sbuffer_file_name, 0, 1, 0, | |
728 | "Return name of file BUFFER is visiting, or nil if none.\n\ | |
729 | No argument or nil as argument means use the current buffer.") | |
730 | (buffer) | |
731 | register Lisp_Object buffer; | |
732 | { | |
265a9e55 | 733 | if (NILP (buffer)) |
1ab256cb RM |
734 | return current_buffer->filename; |
735 | CHECK_BUFFER (buffer, 0); | |
736 | return XBUFFER (buffer)->filename; | |
737 | } | |
738 | ||
336cd056 RS |
739 | DEFUN ("buffer-base-buffer", Fbuffer_base_buffer, Sbuffer_base_buffer, |
740 | 0, 1, 0, | |
741 | "Return the base buffer of indirect buffer BUFFER.\n\ | |
742 | If BUFFER is not indirect, return nil.") | |
743 | (buffer) | |
744 | register Lisp_Object buffer; | |
745 | { | |
746 | struct buffer *base; | |
747 | Lisp_Object base_buffer; | |
748 | ||
749 | if (NILP (buffer)) | |
750 | base = current_buffer->base_buffer; | |
751 | else | |
752 | { | |
753 | CHECK_BUFFER (buffer, 0); | |
754 | base = XBUFFER (buffer)->base_buffer; | |
755 | } | |
756 | ||
757 | if (! base) | |
758 | return Qnil; | |
759 | XSETBUFFER (base_buffer, base); | |
760 | return base_buffer; | |
761 | } | |
762 | ||
1ab256cb RM |
763 | DEFUN ("buffer-local-variables", Fbuffer_local_variables, |
764 | Sbuffer_local_variables, 0, 1, 0, | |
765 | "Return an alist of variables that are buffer-local in BUFFER.\n\ | |
553defa4 RS |
766 | Most elements look like (SYMBOL . VALUE), describing one variable.\n\ |
767 | For a symbol that is locally unbound, just the symbol appears in the value.\n\ | |
1ab256cb RM |
768 | Note that storing new VALUEs in these elements doesn't change the variables.\n\ |
769 | No argument or nil as argument means use current buffer as BUFFER.") | |
770 | (buffer) | |
771 | register Lisp_Object buffer; | |
772 | { | |
773 | register struct buffer *buf; | |
553defa4 | 774 | register Lisp_Object result; |
1ab256cb | 775 | |
265a9e55 | 776 | if (NILP (buffer)) |
1ab256cb RM |
777 | buf = current_buffer; |
778 | else | |
779 | { | |
780 | CHECK_BUFFER (buffer, 0); | |
781 | buf = XBUFFER (buffer); | |
782 | } | |
783 | ||
553defa4 RS |
784 | result = Qnil; |
785 | ||
1ab256cb | 786 | { |
553defa4 | 787 | register Lisp_Object tail; |
7539e11f | 788 | for (tail = buf->local_var_alist; CONSP (tail); tail = XCDR (tail)) |
1ab256cb | 789 | { |
553defa4 RS |
790 | Lisp_Object val, elt; |
791 | ||
7539e11f | 792 | elt = XCAR (tail); |
553defa4 | 793 | |
e0585c64 RS |
794 | /* Reference each variable in the alist in buf. |
795 | If inquiring about the current buffer, this gets the current values, | |
796 | so store them into the alist so the alist is up to date. | |
797 | If inquiring about some other buffer, this swaps out any values | |
798 | for that buffer, making the alist up to date automatically. */ | |
7539e11f | 799 | val = find_symbol_value (XCAR (elt)); |
e0585c64 RS |
800 | /* Use the current buffer value only if buf is the current buffer. */ |
801 | if (buf != current_buffer) | |
7539e11f | 802 | val = XCDR (elt); |
553defa4 RS |
803 | |
804 | /* If symbol is unbound, put just the symbol in the list. */ | |
805 | if (EQ (val, Qunbound)) | |
7539e11f | 806 | result = Fcons (XCAR (elt), result); |
553defa4 RS |
807 | /* Otherwise, put (symbol . value) in the list. */ |
808 | else | |
7539e11f | 809 | result = Fcons (Fcons (XCAR (elt), val), result); |
1ab256cb RM |
810 | } |
811 | } | |
812 | ||
1ab256cb RM |
813 | /* Add on all the variables stored in special slots. */ |
814 | { | |
7c02e886 | 815 | int offset, idx; |
1ab256cb | 816 | |
7313acd0 | 817 | for (offset = PER_BUFFER_VAR_OFFSET (name); |
1ab256cb | 818 | offset < sizeof (struct buffer); |
7c02e886 GM |
819 | /* sizeof EMACS_INT == sizeof Lisp_Object */ |
820 | offset += (sizeof (EMACS_INT))) | |
1ab256cb | 821 | { |
7313acd0 GM |
822 | idx = PER_BUFFER_IDX (offset); |
823 | if ((idx == -1 || PER_BUFFER_VALUE_P (buf, idx)) | |
824 | && SYMBOLP (PER_BUFFER_SYMBOL (offset))) | |
825 | result = Fcons (Fcons (PER_BUFFER_SYMBOL (offset), | |
826 | PER_BUFFER_VALUE (buf, offset)), | |
7c02e886 | 827 | result); |
1ab256cb RM |
828 | } |
829 | } | |
553defa4 RS |
830 | |
831 | return result; | |
1ab256cb RM |
832 | } |
833 | ||
834 | \f | |
835 | DEFUN ("buffer-modified-p", Fbuffer_modified_p, Sbuffer_modified_p, | |
836 | 0, 1, 0, | |
837 | "Return t if BUFFER was modified since its file was last read or saved.\n\ | |
838 | No argument or nil as argument means use current buffer as BUFFER.") | |
839 | (buffer) | |
840 | register Lisp_Object buffer; | |
841 | { | |
842 | register struct buffer *buf; | |
265a9e55 | 843 | if (NILP (buffer)) |
1ab256cb RM |
844 | buf = current_buffer; |
845 | else | |
846 | { | |
847 | CHECK_BUFFER (buffer, 0); | |
848 | buf = XBUFFER (buffer); | |
849 | } | |
850 | ||
336cd056 | 851 | return BUF_SAVE_MODIFF (buf) < BUF_MODIFF (buf) ? Qt : Qnil; |
1ab256cb RM |
852 | } |
853 | ||
854 | DEFUN ("set-buffer-modified-p", Fset_buffer_modified_p, Sset_buffer_modified_p, | |
855 | 1, 1, 0, | |
856 | "Mark current buffer as modified or unmodified according to FLAG.\n\ | |
857 | A non-nil FLAG means mark the buffer modified.") | |
858 | (flag) | |
859 | register Lisp_Object flag; | |
860 | { | |
861 | register int already; | |
862 | register Lisp_Object fn; | |
8ec01c70 | 863 | Lisp_Object buffer, window; |
1ab256cb RM |
864 | |
865 | #ifdef CLASH_DETECTION | |
866 | /* If buffer becoming modified, lock the file. | |
867 | If buffer becoming unmodified, unlock the file. */ | |
868 | ||
60f4dd23 | 869 | fn = current_buffer->file_truename; |
90d456d2 KH |
870 | /* Test buffer-file-name so that binding it to nil is effective. */ |
871 | if (!NILP (fn) && ! NILP (current_buffer->filename)) | |
1ab256cb | 872 | { |
336cd056 | 873 | already = SAVE_MODIFF < MODIFF; |
265a9e55 | 874 | if (!already && !NILP (flag)) |
1ab256cb | 875 | lock_file (fn); |
265a9e55 | 876 | else if (already && NILP (flag)) |
1ab256cb RM |
877 | unlock_file (fn); |
878 | } | |
879 | #endif /* CLASH_DETECTION */ | |
880 | ||
336cd056 | 881 | SAVE_MODIFF = NILP (flag) ? MODIFF : 0; |
8ec01c70 GM |
882 | |
883 | /* Set update_mode_lines only if buffer is displayed in some window. | |
884 | Packages like jit-lock or lazy-lock preserve a buffer's modified | |
885 | state by recording/restoring the state around blocks of code. | |
886 | Setting update_mode_lines makes redisplay consider all windows | |
887 | (on all frames). Stealth fontification of buffers not displayed | |
888 | would incur additional redisplay costs if we'd set | |
889 | update_modes_lines unconditionally. | |
890 | ||
891 | Ideally, I think there should be another mechanism for fontifying | |
892 | buffers without "modifying" buffers, or redisplay should be | |
893 | smarter about updating the `*' in mode lines. --gerd */ | |
894 | XSETBUFFER (buffer, current_buffer); | |
895 | window = Fget_buffer_window (buffer, Qt); | |
896 | if (WINDOWP (window)) | |
d57b83b3 GM |
897 | { |
898 | ++update_mode_lines; | |
899 | current_buffer->prevent_redisplay_optimizations_p = 1; | |
900 | } | |
8ec01c70 | 901 | |
1ab256cb RM |
902 | return flag; |
903 | } | |
904 | ||
a8c21b48 GM |
905 | DEFUN ("restore-buffer-modified-p", Frestore_buffer_modified_p, |
906 | Srestore_buffer_modified_p, 1, 1, 0, | |
907 | "Like `set-buffer-modified-p', with a differences concerning redisplay.\n\ | |
908 | It is not ensured that mode lines will be updated to show the modified\n\ | |
909 | state of the current buffer. Use with care.") | |
910 | (flag) | |
911 | Lisp_Object flag; | |
912 | { | |
913 | #ifdef CLASH_DETECTION | |
914 | Lisp_Object fn; | |
915 | ||
916 | /* If buffer becoming modified, lock the file. | |
917 | If buffer becoming unmodified, unlock the file. */ | |
918 | ||
919 | fn = current_buffer->file_truename; | |
920 | /* Test buffer-file-name so that binding it to nil is effective. */ | |
921 | if (!NILP (fn) && ! NILP (current_buffer->filename)) | |
922 | { | |
923 | int already = SAVE_MODIFF < MODIFF; | |
924 | if (!already && !NILP (flag)) | |
925 | lock_file (fn); | |
926 | else if (already && NILP (flag)) | |
927 | unlock_file (fn); | |
928 | } | |
929 | #endif /* CLASH_DETECTION */ | |
930 | ||
931 | SAVE_MODIFF = NILP (flag) ? MODIFF : 0; | |
932 | return flag; | |
933 | } | |
934 | ||
1ab256cb RM |
935 | DEFUN ("buffer-modified-tick", Fbuffer_modified_tick, Sbuffer_modified_tick, |
936 | 0, 1, 0, | |
937 | "Return BUFFER's tick counter, incremented for each change in text.\n\ | |
938 | Each buffer has a tick counter which is incremented each time the text in\n\ | |
939 | that buffer is changed. It wraps around occasionally.\n\ | |
940 | No argument or nil as argument means use current buffer as BUFFER.") | |
941 | (buffer) | |
942 | register Lisp_Object buffer; | |
943 | { | |
944 | register struct buffer *buf; | |
265a9e55 | 945 | if (NILP (buffer)) |
1ab256cb RM |
946 | buf = current_buffer; |
947 | else | |
948 | { | |
949 | CHECK_BUFFER (buffer, 0); | |
950 | buf = XBUFFER (buffer); | |
951 | } | |
952 | ||
953 | return make_number (BUF_MODIFF (buf)); | |
954 | } | |
955 | \f | |
01050cb5 | 956 | DEFUN ("rename-buffer", Frename_buffer, Srename_buffer, 1, 2, |
4c7e5f09 | 957 | "sRename buffer (to new name): \nP", |
1ab256cb | 958 | "Change current buffer's name to NEWNAME (a string).\n\ |
3bd779aa | 959 | If second arg UNIQUE is nil or omitted, it is an error if a\n\ |
01050cb5 | 960 | buffer named NEWNAME already exists.\n\ |
3bd779aa | 961 | If UNIQUE is non-nil, come up with a new name using\n\ |
01050cb5 | 962 | `generate-new-buffer-name'.\n\ |
3bd779aa RS |
963 | Interactively, you can set UNIQUE with a prefix argument.\n\ |
964 | We return the name we actually gave the buffer.\n\ | |
1ab256cb | 965 | This does not change the name of the visited file (if any).") |
489c043a RS |
966 | (newname, unique) |
967 | register Lisp_Object newname, unique; | |
1ab256cb RM |
968 | { |
969 | register Lisp_Object tem, buf; | |
970 | ||
489c043a | 971 | CHECK_STRING (newname, 0); |
d59698c4 | 972 | |
489c043a | 973 | if (XSTRING (newname)->size == 0) |
d59698c4 RS |
974 | error ("Empty string is invalid as a buffer name"); |
975 | ||
489c043a | 976 | tem = Fget_buffer (newname); |
265a9e55 | 977 | if (!NILP (tem)) |
01050cb5 | 978 | { |
8801a864 KR |
979 | /* Don't short-circuit if UNIQUE is t. That is a useful way to |
980 | rename the buffer automatically so you can create another | |
981 | with the original name. It makes UNIQUE equivalent to | |
982 | (rename-buffer (generate-new-buffer-name NEWNAME)). */ | |
983 | if (NILP (unique) && XBUFFER (tem) == current_buffer) | |
984 | return current_buffer->name; | |
3bd779aa | 985 | if (!NILP (unique)) |
489c043a | 986 | newname = Fgenerate_new_buffer_name (newname, current_buffer->name); |
01050cb5 | 987 | else |
489c043a | 988 | error ("Buffer name `%s' is in use", XSTRING (newname)->data); |
01050cb5 | 989 | } |
1ab256cb | 990 | |
489c043a | 991 | current_buffer->name = newname; |
76f590d7 JB |
992 | |
993 | /* Catch redisplay's attention. Unless we do this, the mode lines for | |
994 | any windows displaying current_buffer will stay unchanged. */ | |
995 | update_mode_lines++; | |
996 | ||
67180c6a | 997 | XSETBUFFER (buf, current_buffer); |
489c043a | 998 | Fsetcar (Frassq (buf, Vbuffer_alist), newname); |
cf058e49 KH |
999 | if (NILP (current_buffer->filename) |
1000 | && !NILP (current_buffer->auto_save_file_name)) | |
1ab256cb | 1001 | call0 (intern ("rename-auto-save-file")); |
fb5eba9c RS |
1002 | /* Refetch since that last call may have done GC. */ |
1003 | return current_buffer->name; | |
1ab256cb RM |
1004 | } |
1005 | ||
773fbdb9 | 1006 | DEFUN ("other-buffer", Fother_buffer, Sother_buffer, 0, 3, 0, |
1ab256cb | 1007 | "Return most recently selected buffer other than BUFFER.\n\ |
a0ebb746 JB |
1008 | Buffers not visible in windows are preferred to visible buffers,\n\ |
1009 | unless optional second argument VISIBLE-OK is non-nil.\n\ | |
97c3c30c RS |
1010 | If the optional third argument FRAME is non-nil, use that frame's\n\ |
1011 | buffer list instead of the selected frame's buffer list.\n\ | |
1ab256cb RM |
1012 | If no other buffer exists, the buffer `*scratch*' is returned.\n\ |
1013 | If BUFFER is omitted or nil, some interesting buffer is returned.") | |
773fbdb9 RS |
1014 | (buffer, visible_ok, frame) |
1015 | register Lisp_Object buffer, visible_ok, frame; | |
1ab256cb | 1016 | { |
89132f25 | 1017 | Lisp_Object Fset_buffer_major_mode (); |
7962a441 | 1018 | register Lisp_Object tail, buf, notsogood, tem, pred, add_ons; |
1ab256cb RM |
1019 | notsogood = Qnil; |
1020 | ||
773fbdb9 | 1021 | if (NILP (frame)) |
9ba9623d | 1022 | frame = selected_frame; |
773fbdb9 | 1023 | |
7962a441 | 1024 | tail = Vbuffer_alist; |
773fbdb9 | 1025 | pred = frame_buffer_predicate (frame); |
7962a441 RS |
1026 | |
1027 | /* Consider buffers that have been seen in the selected frame | |
1028 | before other buffers. */ | |
1029 | ||
773fbdb9 | 1030 | tem = frame_buffer_list (frame); |
7962a441 RS |
1031 | add_ons = Qnil; |
1032 | while (CONSP (tem)) | |
1033 | { | |
7539e11f KR |
1034 | if (BUFFERP (XCAR (tem))) |
1035 | add_ons = Fcons (Fcons (Qnil, XCAR (tem)), add_ons); | |
1036 | tem = XCDR (tem); | |
7962a441 RS |
1037 | } |
1038 | tail = nconc2 (Fnreverse (add_ons), tail); | |
1039 | ||
1040 | for (; !NILP (tail); tail = Fcdr (tail)) | |
1ab256cb RM |
1041 | { |
1042 | buf = Fcdr (Fcar (tail)); | |
1043 | if (EQ (buf, buffer)) | |
1044 | continue; | |
1045 | if (XSTRING (XBUFFER (buf)->name)->data[0] == ' ') | |
1046 | continue; | |
04ae1b48 RS |
1047 | /* If the selected frame has a buffer_predicate, |
1048 | disregard buffers that don't fit the predicate. */ | |
7962a441 | 1049 | if (!NILP (pred)) |
04ae1b48 | 1050 | { |
7962a441 | 1051 | tem = call1 (pred, buf); |
04ae1b48 RS |
1052 | if (NILP (tem)) |
1053 | continue; | |
1054 | } | |
04ae1b48 | 1055 | |
a0ebb746 | 1056 | if (NILP (visible_ok)) |
66ffe51c | 1057 | tem = Fget_buffer_window (buf, Qvisible); |
a0ebb746 JB |
1058 | else |
1059 | tem = Qnil; | |
265a9e55 | 1060 | if (NILP (tem)) |
1ab256cb | 1061 | return buf; |
265a9e55 | 1062 | if (NILP (notsogood)) |
1ab256cb RM |
1063 | notsogood = buf; |
1064 | } | |
265a9e55 | 1065 | if (!NILP (notsogood)) |
1ab256cb | 1066 | return notsogood; |
dba1a30a GM |
1067 | buf = Fget_buffer (build_string ("*scratch*")); |
1068 | if (NILP (buf)) | |
1069 | { | |
1070 | buf = Fget_buffer_create (build_string ("*scratch*")); | |
1071 | Fset_buffer_major_mode (buf); | |
1072 | } | |
89132f25 | 1073 | return buf; |
1ab256cb RM |
1074 | } |
1075 | \f | |
316784fb KH |
1076 | DEFUN ("buffer-disable-undo", Fbuffer_disable_undo, Sbuffer_disable_undo, |
1077 | 0, 1, "", | |
5b8bcf48 RS |
1078 | "Make BUFFER stop keeping undo information.\n\ |
1079 | No argument or nil as argument means do this for the current buffer.") | |
ffd56f97 JB |
1080 | (buffer) |
1081 | register Lisp_Object buffer; | |
1ab256cb | 1082 | { |
ffd56f97 JB |
1083 | Lisp_Object real_buffer; |
1084 | ||
1085 | if (NILP (buffer)) | |
67180c6a | 1086 | XSETBUFFER (real_buffer, current_buffer); |
ffd56f97 JB |
1087 | else |
1088 | { | |
1089 | real_buffer = Fget_buffer (buffer); | |
1090 | if (NILP (real_buffer)) | |
1091 | nsberror (buffer); | |
1092 | } | |
1093 | ||
1094 | XBUFFER (real_buffer)->undo_list = Qt; | |
1095 | ||
1ab256cb RM |
1096 | return Qnil; |
1097 | } | |
1098 | ||
1099 | DEFUN ("buffer-enable-undo", Fbuffer_enable_undo, Sbuffer_enable_undo, | |
1100 | 0, 1, "", | |
1101 | "Start keeping undo information for buffer BUFFER.\n\ | |
1102 | No argument or nil as argument means do this for the current buffer.") | |
ffd56f97 JB |
1103 | (buffer) |
1104 | register Lisp_Object buffer; | |
1ab256cb | 1105 | { |
ffd56f97 | 1106 | Lisp_Object real_buffer; |
1ab256cb | 1107 | |
ffd56f97 | 1108 | if (NILP (buffer)) |
67180c6a | 1109 | XSETBUFFER (real_buffer, current_buffer); |
1ab256cb RM |
1110 | else |
1111 | { | |
ffd56f97 JB |
1112 | real_buffer = Fget_buffer (buffer); |
1113 | if (NILP (real_buffer)) | |
1114 | nsberror (buffer); | |
1ab256cb RM |
1115 | } |
1116 | ||
ffd56f97 JB |
1117 | if (EQ (XBUFFER (real_buffer)->undo_list, Qt)) |
1118 | XBUFFER (real_buffer)->undo_list = Qnil; | |
1ab256cb RM |
1119 | |
1120 | return Qnil; | |
1121 | } | |
1122 | ||
1123 | /* | |
1124 | DEFVAR_LISP ("kill-buffer-hook", no_cell, "\ | |
1125 | Hook to be run (by `run-hooks', which see) when a buffer is killed.\n\ | |
1126 | The buffer being killed will be current while the hook is running.\n\ | |
1127 | See `kill-buffer'." | |
1128 | */ | |
1129 | DEFUN ("kill-buffer", Fkill_buffer, Skill_buffer, 1, 1, "bKill buffer: ", | |
1130 | "Kill the buffer BUFFER.\n\ | |
1131 | The argument may be a buffer or may be the name of a buffer.\n\ | |
1132 | An argument of nil means kill the current buffer.\n\n\ | |
1133 | Value is t if the buffer is actually killed, nil if user says no.\n\n\ | |
1134 | The value of `kill-buffer-hook' (which may be local to that buffer),\n\ | |
1135 | if not void, is a list of functions to be called, with no arguments,\n\ | |
1136 | before the buffer is actually killed. The buffer to be killed is current\n\ | |
1137 | when the hook functions are called.\n\n\ | |
1138 | Any processes that have this buffer as the `process-buffer' are killed\n\ | |
b64d7442 | 1139 | with SIGHUP.") |
a25f13ae KH |
1140 | (buffer) |
1141 | Lisp_Object buffer; | |
1ab256cb RM |
1142 | { |
1143 | Lisp_Object buf; | |
1144 | register struct buffer *b; | |
1145 | register Lisp_Object tem; | |
1146 | register struct Lisp_Marker *m; | |
6af718a4 | 1147 | struct gcpro gcpro1; |
1ab256cb | 1148 | |
a25f13ae | 1149 | if (NILP (buffer)) |
1ab256cb RM |
1150 | buf = Fcurrent_buffer (); |
1151 | else | |
a25f13ae | 1152 | buf = Fget_buffer (buffer); |
265a9e55 | 1153 | if (NILP (buf)) |
a25f13ae | 1154 | nsberror (buffer); |
1ab256cb RM |
1155 | |
1156 | b = XBUFFER (buf); | |
1157 | ||
4a4a9db5 KH |
1158 | /* Avoid trouble for buffer already dead. */ |
1159 | if (NILP (b->name)) | |
1160 | return Qnil; | |
1161 | ||
1ab256cb | 1162 | /* Query if the buffer is still modified. */ |
265a9e55 | 1163 | if (INTERACTIVE && !NILP (b->filename) |
336cd056 | 1164 | && BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) |
1ab256cb | 1165 | { |
a25f13ae | 1166 | GCPRO1 (buf); |
1ab256cb RM |
1167 | tem = do_yes_or_no_p (format1 ("Buffer %s modified; kill anyway? ", |
1168 | XSTRING (b->name)->data)); | |
1169 | UNGCPRO; | |
265a9e55 | 1170 | if (NILP (tem)) |
1ab256cb RM |
1171 | return Qnil; |
1172 | } | |
1173 | ||
dcdffbf6 | 1174 | /* Run hooks with the buffer to be killed the current buffer. */ |
1ab256cb | 1175 | { |
1ab256cb | 1176 | int count = specpdl_ptr - specpdl; |
dcdffbf6 | 1177 | Lisp_Object list; |
1ab256cb RM |
1178 | |
1179 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1180 | set_buffer_internal (b); | |
dcdffbf6 RS |
1181 | |
1182 | /* First run the query functions; if any query is answered no, | |
1183 | don't kill the buffer. */ | |
1184 | for (list = Vkill_buffer_query_functions; !NILP (list); list = Fcdr (list)) | |
1185 | { | |
1186 | tem = call0 (Fcar (list)); | |
1187 | if (NILP (tem)) | |
1188 | return unbind_to (count, Qnil); | |
1189 | } | |
1190 | ||
1191 | /* Then run the hooks. */ | |
fd186f07 RS |
1192 | if (!NILP (Vrun_hooks)) |
1193 | call1 (Vrun_hooks, Qkill_buffer_hook); | |
1ab256cb RM |
1194 | unbind_to (count, Qnil); |
1195 | } | |
1196 | ||
1197 | /* We have no more questions to ask. Verify that it is valid | |
1198 | to kill the buffer. This must be done after the questions | |
1199 | since anything can happen within do_yes_or_no_p. */ | |
1200 | ||
1201 | /* Don't kill the minibuffer now current. */ | |
1202 | if (EQ (buf, XWINDOW (minibuf_window)->buffer)) | |
1203 | return Qnil; | |
1204 | ||
265a9e55 | 1205 | if (NILP (b->name)) |
1ab256cb RM |
1206 | return Qnil; |
1207 | ||
336cd056 RS |
1208 | /* When we kill a base buffer, kill all its indirect buffers. |
1209 | We do it at this stage so nothing terrible happens if they | |
1210 | ask questions or their hooks get errors. */ | |
1211 | if (! b->base_buffer) | |
1212 | { | |
1213 | struct buffer *other; | |
1214 | ||
1215 | GCPRO1 (buf); | |
1216 | ||
1217 | for (other = all_buffers; other; other = other->next) | |
4a4a9db5 KH |
1218 | /* all_buffers contains dead buffers too; |
1219 | don't re-kill them. */ | |
1220 | if (other->base_buffer == b && !NILP (other->name)) | |
336cd056 RS |
1221 | { |
1222 | Lisp_Object buf; | |
1223 | XSETBUFFER (buf, other); | |
1224 | Fkill_buffer (buf); | |
1225 | } | |
1226 | ||
1227 | UNGCPRO; | |
1228 | } | |
1229 | ||
1ab256cb RM |
1230 | /* Make this buffer not be current. |
1231 | In the process, notice if this is the sole visible buffer | |
1232 | and give up if so. */ | |
1233 | if (b == current_buffer) | |
1234 | { | |
773fbdb9 | 1235 | tem = Fother_buffer (buf, Qnil, Qnil); |
1ab256cb RM |
1236 | Fset_buffer (tem); |
1237 | if (b == current_buffer) | |
1238 | return Qnil; | |
1239 | } | |
1240 | ||
77270fac GM |
1241 | /* Notice if the buffer to kill is the sole visible buffer |
1242 | when we're currently in the mini-buffer, and give up if so. */ | |
1243 | XSETBUFFER (tem, current_buffer); | |
1244 | if (EQ (tem, XWINDOW (minibuf_window)->buffer)) | |
1245 | { | |
1246 | tem = Fother_buffer (buf, Qnil, Qnil); | |
77270fac GM |
1247 | if (EQ (buf, tem)) |
1248 | return Qnil; | |
1249 | } | |
1250 | ||
1ab256cb RM |
1251 | /* Now there is no question: we can kill the buffer. */ |
1252 | ||
1253 | #ifdef CLASH_DETECTION | |
1254 | /* Unlock this buffer's file, if it is locked. */ | |
1255 | unlock_buffer (b); | |
1256 | #endif /* CLASH_DETECTION */ | |
1257 | ||
1ab256cb | 1258 | kill_buffer_processes (buf); |
1ab256cb RM |
1259 | |
1260 | tem = Vinhibit_quit; | |
1261 | Vinhibit_quit = Qt; | |
00550f94 | 1262 | replace_buffer_in_all_windows (buf); |
b26dd9cb | 1263 | Vbuffer_alist = Fdelq (Frassq (buf, Vbuffer_alist), Vbuffer_alist); |
7962a441 | 1264 | frames_discard_buffer (buf); |
1ab256cb RM |
1265 | Vinhibit_quit = tem; |
1266 | ||
9b59d6d0 | 1267 | /* Delete any auto-save file, if we saved it in this session. */ |
a7a60ce9 | 1268 | if (STRINGP (b->auto_save_file_name) |
e95a0b39 | 1269 | && b->auto_save_modified != 0 |
30e0071c | 1270 | && BUF_SAVE_MODIFF (b) < b->auto_save_modified) |
1ab256cb RM |
1271 | { |
1272 | Lisp_Object tem; | |
1273 | tem = Fsymbol_value (intern ("delete-auto-save-files")); | |
265a9e55 | 1274 | if (! NILP (tem)) |
cbb6a418 | 1275 | internal_delete_file (b->auto_save_file_name); |
1ab256cb RM |
1276 | } |
1277 | ||
4a4a9db5 KH |
1278 | if (b->base_buffer) |
1279 | { | |
1280 | /* Unchain all markers that belong to this indirect buffer. | |
1281 | Don't unchain the markers that belong to the base buffer | |
1282 | or its other indirect buffers. */ | |
1283 | for (tem = BUF_MARKERS (b); !NILP (tem); ) | |
1284 | { | |
1285 | Lisp_Object next; | |
1286 | m = XMARKER (tem); | |
1287 | next = m->chain; | |
1288 | if (m->buffer == b) | |
1289 | unchain_marker (tem); | |
1290 | tem = next; | |
1291 | } | |
1292 | } | |
1293 | else | |
1ab256cb | 1294 | { |
4a4a9db5 | 1295 | /* Unchain all markers of this buffer and its indirect buffers. |
336cd056 | 1296 | and leave them pointing nowhere. */ |
4a4a9db5 | 1297 | for (tem = BUF_MARKERS (b); !NILP (tem); ) |
336cd056 RS |
1298 | { |
1299 | m = XMARKER (tem); | |
1300 | m->buffer = 0; | |
1301 | tem = m->chain; | |
1302 | m->chain = Qnil; | |
1303 | } | |
1304 | BUF_MARKERS (b) = Qnil; | |
336cd056 | 1305 | BUF_INTERVALS (b) = NULL_INTERVAL; |
336cd056 RS |
1306 | |
1307 | /* Perhaps we should explicitly free the interval tree here... */ | |
1308 | } | |
33f7013e | 1309 | |
2f3f993b RS |
1310 | /* Reset the local variables, so that this buffer's local values |
1311 | won't be protected from GC. They would be protected | |
1312 | if they happened to remain encached in their symbols. | |
1313 | This gets rid of them for certain. */ | |
1314 | swap_out_buffer_local_variables (b); | |
13de9290 | 1315 | reset_buffer_local_variables (b, 1); |
2f3f993b | 1316 | |
1ab256cb | 1317 | b->name = Qnil; |
336cd056 | 1318 | |
9ac0d9e0 | 1319 | BLOCK_INPUT; |
336cd056 | 1320 | if (! b->base_buffer) |
b86af064 | 1321 | free_buffer_text (b); |
336cd056 | 1322 | |
28e969dd JB |
1323 | if (b->newline_cache) |
1324 | { | |
1325 | free_region_cache (b->newline_cache); | |
1326 | b->newline_cache = 0; | |
1327 | } | |
1328 | if (b->width_run_cache) | |
1329 | { | |
1330 | free_region_cache (b->width_run_cache); | |
1331 | b->width_run_cache = 0; | |
1332 | } | |
1333 | b->width_table = Qnil; | |
9ac0d9e0 | 1334 | UNBLOCK_INPUT; |
1ab256cb RM |
1335 | b->undo_list = Qnil; |
1336 | ||
1337 | return Qt; | |
1338 | } | |
1339 | \f | |
36a8c287 JB |
1340 | /* Move the assoc for buffer BUF to the front of buffer-alist. Since |
1341 | we do this each time BUF is selected visibly, the more recently | |
1342 | selected buffers are always closer to the front of the list. This | |
1343 | means that other_buffer is more likely to choose a relevant buffer. */ | |
1ab256cb | 1344 | |
01136e9b | 1345 | void |
1ab256cb RM |
1346 | record_buffer (buf) |
1347 | Lisp_Object buf; | |
1348 | { | |
1349 | register Lisp_Object link, prev; | |
773fbdb9 | 1350 | Lisp_Object frame; |
9ba9623d | 1351 | frame = selected_frame; |
1ab256cb RM |
1352 | |
1353 | prev = Qnil; | |
7539e11f | 1354 | for (link = Vbuffer_alist; CONSP (link); link = XCDR (link)) |
1ab256cb | 1355 | { |
7539e11f | 1356 | if (EQ (XCDR (XCAR (link)), buf)) |
1ab256cb RM |
1357 | break; |
1358 | prev = link; | |
1359 | } | |
1360 | ||
36a8c287 JB |
1361 | /* Effectively do Vbuffer_alist = Fdelq (link, Vbuffer_alist); |
1362 | we cannot use Fdelq itself here because it allows quitting. */ | |
1ab256cb | 1363 | |
265a9e55 | 1364 | if (NILP (prev)) |
7539e11f | 1365 | Vbuffer_alist = XCDR (Vbuffer_alist); |
1ab256cb | 1366 | else |
7539e11f | 1367 | XCDR (prev) = XCDR (XCDR (prev)); |
1ab256cb | 1368 | |
7539e11f | 1369 | XCDR (link) = Vbuffer_alist; |
1ab256cb | 1370 | Vbuffer_alist = link; |
7962a441 RS |
1371 | |
1372 | /* Now move this buffer to the front of frame_buffer_list also. */ | |
1373 | ||
1374 | prev = Qnil; | |
773fbdb9 | 1375 | for (link = frame_buffer_list (frame); CONSP (link); |
7539e11f | 1376 | link = XCDR (link)) |
7962a441 | 1377 | { |
7539e11f | 1378 | if (EQ (XCAR (link), buf)) |
7962a441 RS |
1379 | break; |
1380 | prev = link; | |
1381 | } | |
1382 | ||
1383 | /* Effectively do delq. */ | |
1384 | ||
1385 | if (CONSP (link)) | |
1386 | { | |
1387 | if (NILP (prev)) | |
773fbdb9 | 1388 | set_frame_buffer_list (frame, |
7539e11f | 1389 | XCDR (frame_buffer_list (frame))); |
7962a441 | 1390 | else |
7539e11f | 1391 | XCDR (prev) = XCDR (XCDR (prev)); |
7962a441 | 1392 | |
7539e11f | 1393 | XCDR (link) = frame_buffer_list (frame); |
773fbdb9 | 1394 | set_frame_buffer_list (frame, link); |
7962a441 RS |
1395 | } |
1396 | else | |
773fbdb9 | 1397 | set_frame_buffer_list (frame, Fcons (buf, frame_buffer_list (frame))); |
1ab256cb RM |
1398 | } |
1399 | ||
a9ee7a59 KH |
1400 | DEFUN ("set-buffer-major-mode", Fset_buffer_major_mode, Sset_buffer_major_mode, 1, 1, 0, |
1401 | "Set an appropriate major mode for BUFFER, according to `default-major-mode'.\n\ | |
1402 | Use this function before selecting the buffer, since it may need to inspect\n\ | |
1403 | the current buffer's major mode.") | |
a2428fa2 EN |
1404 | (buffer) |
1405 | Lisp_Object buffer; | |
a9ee7a59 KH |
1406 | { |
1407 | int count; | |
1408 | Lisp_Object function; | |
1409 | ||
1410 | function = buffer_defaults.major_mode; | |
1411 | if (NILP (function) && NILP (Fget (current_buffer->major_mode, Qmode_class))) | |
1412 | function = current_buffer->major_mode; | |
1413 | ||
1414 | if (NILP (function) || EQ (function, Qfundamental_mode)) | |
1415 | return Qnil; | |
1416 | ||
1417 | count = specpdl_ptr - specpdl; | |
1418 | ||
1419 | /* To select a nonfundamental mode, | |
1420 | select the buffer temporarily and then call the mode function. */ | |
1421 | ||
1422 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1423 | ||
a2428fa2 | 1424 | Fset_buffer (buffer); |
a9ee7a59 KH |
1425 | call0 (function); |
1426 | ||
1427 | return unbind_to (count, Qnil); | |
1428 | } | |
1429 | ||
2594e0fd RS |
1430 | /* If switching buffers in WINDOW would be an error, return |
1431 | a C string saying what the error would be. */ | |
1432 | ||
1433 | char * | |
1434 | no_switch_window (window) | |
1435 | Lisp_Object window; | |
1ab256cb | 1436 | { |
1ab256cb | 1437 | Lisp_Object tem; |
2594e0fd RS |
1438 | if (EQ (minibuf_window, window)) |
1439 | return "Cannot switch buffers in minibuffer window"; | |
1440 | tem = Fwindow_dedicated_p (window); | |
265a9e55 | 1441 | if (!NILP (tem)) |
2594e0fd RS |
1442 | return "Cannot switch buffers in a dedicated window"; |
1443 | return NULL; | |
1444 | } | |
1445 | ||
1446 | /* Switch to buffer BUFFER in the selected window. | |
1447 | If NORECORD is non-nil, don't call record_buffer. */ | |
1448 | ||
1449 | Lisp_Object | |
1450 | switch_to_buffer_1 (buffer, norecord) | |
1451 | Lisp_Object buffer, norecord; | |
1452 | { | |
1453 | register Lisp_Object buf; | |
1ab256cb | 1454 | |
a25f13ae | 1455 | if (NILP (buffer)) |
773fbdb9 | 1456 | buf = Fother_buffer (Fcurrent_buffer (), Qnil, Qnil); |
1ab256cb | 1457 | else |
a9ee7a59 | 1458 | { |
a25f13ae | 1459 | buf = Fget_buffer (buffer); |
a9ee7a59 KH |
1460 | if (NILP (buf)) |
1461 | { | |
a25f13ae | 1462 | buf = Fget_buffer_create (buffer); |
a9ee7a59 KH |
1463 | Fset_buffer_major_mode (buf); |
1464 | } | |
1465 | } | |
1ab256cb | 1466 | Fset_buffer (buf); |
265a9e55 | 1467 | if (NILP (norecord)) |
1ab256cb RM |
1468 | record_buffer (buf); |
1469 | ||
1470 | Fset_window_buffer (EQ (selected_window, minibuf_window) | |
5fcd022d JB |
1471 | ? Fnext_window (minibuf_window, Qnil, Qnil) |
1472 | : selected_window, | |
1ab256cb RM |
1473 | buf); |
1474 | ||
cd0c235a | 1475 | return buf; |
1ab256cb RM |
1476 | } |
1477 | ||
2594e0fd RS |
1478 | DEFUN ("switch-to-buffer", Fswitch_to_buffer, Sswitch_to_buffer, 1, 2, "BSwitch to buffer: ", |
1479 | "Select buffer BUFFER in the current window.\n\ | |
1480 | BUFFER may be a buffer or a buffer name.\n\ | |
1481 | Optional second arg NORECORD non-nil means\n\ | |
1482 | do not put this buffer at the front of the list of recently selected ones.\n\ | |
1483 | \n\ | |
1484 | WARNING: This is NOT the way to work on another buffer temporarily\n\ | |
1485 | within a Lisp program! Use `set-buffer' instead. That avoids messing with\n\ | |
1486 | the window-buffer correspondences.") | |
1487 | (buffer, norecord) | |
1488 | Lisp_Object buffer, norecord; | |
1489 | { | |
1490 | char *err; | |
1491 | ||
1492 | err = no_switch_window (selected_window); | |
1493 | if (err) error (err); | |
1494 | ||
1495 | return switch_to_buffer_1 (buffer, norecord); | |
1496 | } | |
1497 | ||
cd0c235a | 1498 | DEFUN ("pop-to-buffer", Fpop_to_buffer, Spop_to_buffer, 1, 3, 0, |
1ab256cb RM |
1499 | "Select buffer BUFFER in some window, preferably a different one.\n\ |
1500 | If BUFFER is nil, then some other buffer is chosen.\n\ | |
1501 | If `pop-up-windows' is non-nil, windows can be split to do this.\n\ | |
1502 | If optional second arg OTHER-WINDOW is non-nil, insist on finding another\n\ | |
405615e5 RS |
1503 | window even if BUFFER is already visible in the selected window.\n\ |
1504 | This uses the function `display-buffer' as a subroutine; see the documentation\n\ | |
6d12711f RS |
1505 | of `display-buffer' for additional customization information.\n\ |
1506 | \n\ | |
1507 | Optional third arg NORECORD non-nil means\n\ | |
1508 | do not put this buffer at the front of the list of recently selected ones.") | |
1509 | (buffer, other_window, norecord) | |
1510 | Lisp_Object buffer, other_window, norecord; | |
1ab256cb RM |
1511 | { |
1512 | register Lisp_Object buf; | |
a25f13ae | 1513 | if (NILP (buffer)) |
773fbdb9 | 1514 | buf = Fother_buffer (Fcurrent_buffer (), Qnil, Qnil); |
1ab256cb | 1515 | else |
7c2087ee | 1516 | { |
a25f13ae | 1517 | buf = Fget_buffer (buffer); |
7c2087ee RS |
1518 | if (NILP (buf)) |
1519 | { | |
a25f13ae | 1520 | buf = Fget_buffer_create (buffer); |
7c2087ee RS |
1521 | Fset_buffer_major_mode (buf); |
1522 | } | |
1523 | } | |
1ab256cb | 1524 | Fset_buffer (buf); |
6d12711f RS |
1525 | if (NILP (norecord)) |
1526 | record_buffer (buf); | |
6b17d756 | 1527 | Fselect_window (Fdisplay_buffer (buf, other_window, Qnil)); |
e8b3a22d | 1528 | return buf; |
1ab256cb RM |
1529 | } |
1530 | ||
1531 | DEFUN ("current-buffer", Fcurrent_buffer, Scurrent_buffer, 0, 0, 0, | |
1532 | "Return the current buffer as a Lisp object.") | |
1533 | () | |
1534 | { | |
1535 | register Lisp_Object buf; | |
67180c6a | 1536 | XSETBUFFER (buf, current_buffer); |
1ab256cb RM |
1537 | return buf; |
1538 | } | |
1539 | \f | |
7ec44ec6 GM |
1540 | /* Set the current buffer to B. |
1541 | ||
1542 | We previously set windows_or_buffers_changed here to invalidate | |
1543 | global unchanged information in beg_unchanged and end_unchanged. | |
1544 | This is no longer necessary because we now compute unchanged | |
1545 | information on a buffer-basis. Every action affecting other | |
1546 | windows than the selected one requires a select_window at some | |
1547 | time, and that increments windows_or_buffers_changed. */ | |
1ab256cb RM |
1548 | |
1549 | void | |
1550 | set_buffer_internal (b) | |
1551 | register struct buffer *b; | |
1552 | { | |
b5a225b4 | 1553 | if (current_buffer != b) |
7ec44ec6 | 1554 | set_buffer_internal_1 (b); |
c7aa5005 KH |
1555 | } |
1556 | ||
1557 | /* Set the current buffer to B, and do not set windows_or_buffers_changed. | |
1558 | This is used by redisplay. */ | |
1559 | ||
1560 | void | |
1561 | set_buffer_internal_1 (b) | |
1562 | register struct buffer *b; | |
1563 | { | |
1564 | register struct buffer *old_buf; | |
1565 | register Lisp_Object tail, valcontents; | |
1566 | Lisp_Object tem; | |
1567 | ||
b86af064 | 1568 | #ifdef USE_MMAP_FOR_BUFFERS |
684b01ee | 1569 | if (b->text->beg == NULL) |
b86af064 GM |
1570 | enlarge_buffer_text (b, 0); |
1571 | #endif /* USE_MMAP_FOR_BUFFERS */ | |
684b01ee | 1572 | |
c7aa5005 KH |
1573 | if (current_buffer == b) |
1574 | return; | |
1575 | ||
1ab256cb RM |
1576 | old_buf = current_buffer; |
1577 | current_buffer = b; | |
1578 | last_known_column_point = -1; /* invalidate indentation cache */ | |
1579 | ||
336cd056 RS |
1580 | if (old_buf) |
1581 | { | |
1582 | /* Put the undo list back in the base buffer, so that it appears | |
1583 | that an indirect buffer shares the undo list of its base. */ | |
1584 | if (old_buf->base_buffer) | |
1585 | old_buf->base_buffer->undo_list = old_buf->undo_list; | |
1586 | ||
1587 | /* If the old current buffer has markers to record PT, BEGV and ZV | |
1588 | when it is not current, update them now. */ | |
1589 | if (! NILP (old_buf->pt_marker)) | |
1590 | { | |
1591 | Lisp_Object obuf; | |
1592 | XSETBUFFER (obuf, old_buf); | |
3f236a40 RS |
1593 | set_marker_both (old_buf->pt_marker, obuf, |
1594 | BUF_PT (old_buf), BUF_PT_BYTE (old_buf)); | |
336cd056 RS |
1595 | } |
1596 | if (! NILP (old_buf->begv_marker)) | |
1597 | { | |
1598 | Lisp_Object obuf; | |
1599 | XSETBUFFER (obuf, old_buf); | |
3f236a40 RS |
1600 | set_marker_both (old_buf->begv_marker, obuf, |
1601 | BUF_BEGV (old_buf), BUF_BEGV_BYTE (old_buf)); | |
336cd056 RS |
1602 | } |
1603 | if (! NILP (old_buf->zv_marker)) | |
1604 | { | |
1605 | Lisp_Object obuf; | |
1606 | XSETBUFFER (obuf, old_buf); | |
3f236a40 RS |
1607 | set_marker_both (old_buf->zv_marker, obuf, |
1608 | BUF_ZV (old_buf), BUF_ZV_BYTE (old_buf)); | |
336cd056 RS |
1609 | } |
1610 | } | |
1611 | ||
1612 | /* Get the undo list from the base buffer, so that it appears | |
1613 | that an indirect buffer shares the undo list of its base. */ | |
1614 | if (b->base_buffer) | |
1615 | b->undo_list = b->base_buffer->undo_list; | |
1616 | ||
1617 | /* If the new current buffer has markers to record PT, BEGV and ZV | |
1618 | when it is not current, fetch them now. */ | |
1619 | if (! NILP (b->pt_marker)) | |
3f236a40 RS |
1620 | { |
1621 | BUF_PT (b) = marker_position (b->pt_marker); | |
1622 | BUF_PT_BYTE (b) = marker_byte_position (b->pt_marker); | |
1623 | } | |
336cd056 | 1624 | if (! NILP (b->begv_marker)) |
3f236a40 RS |
1625 | { |
1626 | BUF_BEGV (b) = marker_position (b->begv_marker); | |
1627 | BUF_BEGV_BYTE (b) = marker_byte_position (b->begv_marker); | |
1628 | } | |
336cd056 | 1629 | if (! NILP (b->zv_marker)) |
3f236a40 RS |
1630 | { |
1631 | BUF_ZV (b) = marker_position (b->zv_marker); | |
1632 | BUF_ZV_BYTE (b) = marker_byte_position (b->zv_marker); | |
1633 | } | |
336cd056 | 1634 | |
1ab256cb RM |
1635 | /* Look down buffer's list of local Lisp variables |
1636 | to find and update any that forward into C variables. */ | |
1637 | ||
7539e11f | 1638 | for (tail = b->local_var_alist; !NILP (tail); tail = XCDR (tail)) |
1ab256cb | 1639 | { |
7539e11f | 1640 | valcontents = XSYMBOL (XCAR (XCAR (tail)))->value; |
a7a60ce9 KH |
1641 | if ((BUFFER_LOCAL_VALUEP (valcontents) |
1642 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
3d871c85 | 1643 | && (tem = XBUFFER_LOCAL_VALUE (valcontents)->realvalue, |
a7a60ce9 | 1644 | (BOOLFWDP (tem) || INTFWDP (tem) || OBJFWDP (tem)))) |
1ab256cb RM |
1645 | /* Just reference the variable |
1646 | to cause it to become set for this buffer. */ | |
7539e11f | 1647 | Fsymbol_value (XCAR (XCAR (tail))); |
1ab256cb RM |
1648 | } |
1649 | ||
1650 | /* Do the same with any others that were local to the previous buffer */ | |
1651 | ||
1652 | if (old_buf) | |
7539e11f | 1653 | for (tail = old_buf->local_var_alist; !NILP (tail); tail = XCDR (tail)) |
1ab256cb | 1654 | { |
7539e11f | 1655 | valcontents = XSYMBOL (XCAR (XCAR (tail)))->value; |
a7a60ce9 KH |
1656 | if ((BUFFER_LOCAL_VALUEP (valcontents) |
1657 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
3d871c85 | 1658 | && (tem = XBUFFER_LOCAL_VALUE (valcontents)->realvalue, |
a7a60ce9 | 1659 | (BOOLFWDP (tem) || INTFWDP (tem) || OBJFWDP (tem)))) |
1ab256cb RM |
1660 | /* Just reference the variable |
1661 | to cause it to become set for this buffer. */ | |
7539e11f | 1662 | Fsymbol_value (XCAR (XCAR (tail))); |
1ab256cb RM |
1663 | } |
1664 | } | |
1665 | ||
336cd056 | 1666 | /* Switch to buffer B temporarily for redisplay purposes. |
bbbe9545 | 1667 | This avoids certain things that don't need to be done within redisplay. */ |
336cd056 RS |
1668 | |
1669 | void | |
1670 | set_buffer_temp (b) | |
1671 | struct buffer *b; | |
1672 | { | |
1673 | register struct buffer *old_buf; | |
1674 | ||
1675 | if (current_buffer == b) | |
1676 | return; | |
1677 | ||
1678 | old_buf = current_buffer; | |
1679 | current_buffer = b; | |
1680 | ||
1681 | if (old_buf) | |
1682 | { | |
1683 | /* If the old current buffer has markers to record PT, BEGV and ZV | |
1684 | when it is not current, update them now. */ | |
1685 | if (! NILP (old_buf->pt_marker)) | |
1686 | { | |
1687 | Lisp_Object obuf; | |
1688 | XSETBUFFER (obuf, old_buf); | |
3f236a40 RS |
1689 | set_marker_both (old_buf->pt_marker, obuf, |
1690 | BUF_PT (old_buf), BUF_PT_BYTE (old_buf)); | |
336cd056 RS |
1691 | } |
1692 | if (! NILP (old_buf->begv_marker)) | |
1693 | { | |
1694 | Lisp_Object obuf; | |
1695 | XSETBUFFER (obuf, old_buf); | |
3f236a40 RS |
1696 | set_marker_both (old_buf->begv_marker, obuf, |
1697 | BUF_BEGV (old_buf), BUF_BEGV_BYTE (old_buf)); | |
336cd056 RS |
1698 | } |
1699 | if (! NILP (old_buf->zv_marker)) | |
1700 | { | |
1701 | Lisp_Object obuf; | |
1702 | XSETBUFFER (obuf, old_buf); | |
3f236a40 RS |
1703 | set_marker_both (old_buf->zv_marker, obuf, |
1704 | BUF_ZV (old_buf), BUF_ZV_BYTE (old_buf)); | |
336cd056 RS |
1705 | } |
1706 | } | |
1707 | ||
1708 | /* If the new current buffer has markers to record PT, BEGV and ZV | |
1709 | when it is not current, fetch them now. */ | |
1710 | if (! NILP (b->pt_marker)) | |
3f236a40 RS |
1711 | { |
1712 | BUF_PT (b) = marker_position (b->pt_marker); | |
1713 | BUF_PT_BYTE (b) = marker_byte_position (b->pt_marker); | |
1714 | } | |
336cd056 | 1715 | if (! NILP (b->begv_marker)) |
3f236a40 RS |
1716 | { |
1717 | BUF_BEGV (b) = marker_position (b->begv_marker); | |
1718 | BUF_BEGV_BYTE (b) = marker_byte_position (b->begv_marker); | |
1719 | } | |
336cd056 | 1720 | if (! NILP (b->zv_marker)) |
3f236a40 RS |
1721 | { |
1722 | BUF_ZV (b) = marker_position (b->zv_marker); | |
1723 | BUF_ZV_BYTE (b) = marker_byte_position (b->zv_marker); | |
1724 | } | |
336cd056 RS |
1725 | } |
1726 | ||
1ab256cb RM |
1727 | DEFUN ("set-buffer", Fset_buffer, Sset_buffer, 1, 1, 0, |
1728 | "Make the buffer BUFFER current for editing operations.\n\ | |
1729 | BUFFER may be a buffer or the name of an existing buffer.\n\ | |
1730 | See also `save-excursion' when you want to make a buffer current temporarily.\n\ | |
1731 | This function does not display the buffer, so its effect ends\n\ | |
1732 | when the current command terminates.\n\ | |
1733 | Use `switch-to-buffer' or `pop-to-buffer' to switch buffers permanently.") | |
a25f13ae KH |
1734 | (buffer) |
1735 | register Lisp_Object buffer; | |
1ab256cb | 1736 | { |
a25f13ae KH |
1737 | register Lisp_Object buf; |
1738 | buf = Fget_buffer (buffer); | |
1739 | if (NILP (buf)) | |
1740 | nsberror (buffer); | |
1741 | if (NILP (XBUFFER (buf)->name)) | |
1ab256cb | 1742 | error ("Selecting deleted buffer"); |
a25f13ae KH |
1743 | set_buffer_internal (XBUFFER (buf)); |
1744 | return buf; | |
1ab256cb | 1745 | } |
d0628b06 RS |
1746 | |
1747 | /* Set the current buffer to BUFFER provided it is alive. */ | |
1748 | ||
1749 | Lisp_Object | |
1750 | set_buffer_if_live (buffer) | |
1751 | Lisp_Object buffer; | |
1752 | { | |
1753 | if (! NILP (XBUFFER (buffer)->name)) | |
1754 | Fset_buffer (buffer); | |
1755 | return Qnil; | |
1756 | } | |
1ab256cb RM |
1757 | \f |
1758 | DEFUN ("barf-if-buffer-read-only", Fbarf_if_buffer_read_only, | |
1759 | Sbarf_if_buffer_read_only, 0, 0, 0, | |
1760 | "Signal a `buffer-read-only' error if the current buffer is read-only.") | |
1761 | () | |
1762 | { | |
a96b68f1 RS |
1763 | if (!NILP (current_buffer->read_only) |
1764 | && NILP (Vinhibit_read_only)) | |
1ab256cb RM |
1765 | Fsignal (Qbuffer_read_only, (Fcons (Fcurrent_buffer (), Qnil))); |
1766 | return Qnil; | |
1767 | } | |
1768 | ||
1769 | DEFUN ("bury-buffer", Fbury_buffer, Sbury_buffer, 0, 1, "", | |
1770 | "Put BUFFER at the end of the list of all buffers.\n\ | |
1771 | There it is the least likely candidate for `other-buffer' to return;\n\ | |
528415e7 | 1772 | thus, the least likely buffer for \\[switch-to-buffer] to select by default.\n\ |
a5611885 JB |
1773 | If BUFFER is nil or omitted, bury the current buffer.\n\ |
1774 | Also, if BUFFER is nil or omitted, remove the current buffer from the\n\ | |
1775 | selected window if it is displayed there.") | |
a2428fa2 EN |
1776 | (buffer) |
1777 | register Lisp_Object buffer; | |
1ab256cb | 1778 | { |
b271272a | 1779 | /* Figure out what buffer we're going to bury. */ |
a2428fa2 | 1780 | if (NILP (buffer)) |
a5611885 | 1781 | { |
a2428fa2 | 1782 | XSETBUFFER (buffer, current_buffer); |
0a63b212 RS |
1783 | |
1784 | /* If we're burying the current buffer, unshow it. */ | |
773fbdb9 | 1785 | Fswitch_to_buffer (Fother_buffer (buffer, Qnil, Qnil), Qnil); |
a5611885 | 1786 | } |
1ab256cb RM |
1787 | else |
1788 | { | |
1789 | Lisp_Object buf1; | |
1790 | ||
a2428fa2 | 1791 | buf1 = Fget_buffer (buffer); |
265a9e55 | 1792 | if (NILP (buf1)) |
a2428fa2 EN |
1793 | nsberror (buffer); |
1794 | buffer = buf1; | |
b271272a JB |
1795 | } |
1796 | ||
a1a8b28e GM |
1797 | /* Move buffer to the end of the buffer list. Do nothing if the |
1798 | buffer is killed. */ | |
1799 | if (!NILP (XBUFFER (buffer)->name)) | |
1800 | { | |
1801 | Lisp_Object aelt, link; | |
b271272a | 1802 | |
a1a8b28e GM |
1803 | aelt = Frassq (buffer, Vbuffer_alist); |
1804 | link = Fmemq (aelt, Vbuffer_alist); | |
1805 | Vbuffer_alist = Fdelq (aelt, Vbuffer_alist); | |
1806 | XCDR (link) = Qnil; | |
1807 | Vbuffer_alist = nconc2 (Vbuffer_alist, link); | |
1ab256cb | 1808 | |
a1a8b28e GM |
1809 | frames_bury_buffer (buffer); |
1810 | } | |
dec989eb | 1811 | |
1ab256cb RM |
1812 | return Qnil; |
1813 | } | |
1814 | \f | |
c922bc55 | 1815 | DEFUN ("erase-buffer", Ferase_buffer, Serase_buffer, 0, 0, "*", |
1ab256cb | 1816 | "Delete the entire contents of the current buffer.\n\ |
2950a20e | 1817 | Any narrowing restriction in effect (see `narrow-to-region') is removed,\n\ |
1ab256cb RM |
1818 | so the buffer is truly empty after this.") |
1819 | () | |
1820 | { | |
1821 | Fwiden (); | |
c0d9a0c3 GM |
1822 | |
1823 | del_range (BEG, Z); | |
c280bc6a | 1824 | |
1ab256cb RM |
1825 | current_buffer->last_window_start = 1; |
1826 | /* Prevent warnings, or suspension of auto saving, that would happen | |
1827 | if future size is less than past size. Use of erase-buffer | |
1828 | implies that the future text is not really related to the past text. */ | |
8d7a4592 | 1829 | XSETFASTINT (current_buffer->save_length, 0); |
1ab256cb RM |
1830 | return Qnil; |
1831 | } | |
1832 | ||
01136e9b | 1833 | void |
1ab256cb RM |
1834 | validate_region (b, e) |
1835 | register Lisp_Object *b, *e; | |
1836 | { | |
1ab256cb RM |
1837 | CHECK_NUMBER_COERCE_MARKER (*b, 0); |
1838 | CHECK_NUMBER_COERCE_MARKER (*e, 1); | |
1839 | ||
1840 | if (XINT (*b) > XINT (*e)) | |
1841 | { | |
03192067 KH |
1842 | Lisp_Object tem; |
1843 | tem = *b; *b = *e; *e = tem; | |
1ab256cb RM |
1844 | } |
1845 | ||
1846 | if (!(BEGV <= XINT (*b) && XINT (*b) <= XINT (*e) | |
1847 | && XINT (*e) <= ZV)) | |
1848 | args_out_of_range (*b, *e); | |
1849 | } | |
1850 | \f | |
b05525fa RS |
1851 | /* Advance BYTE_POS up to a character boundary |
1852 | and return the adjusted position. */ | |
1853 | ||
1854 | static int | |
1855 | advance_to_char_boundary (byte_pos) | |
1856 | int byte_pos; | |
1857 | { | |
f8449323 | 1858 | int c; |
b05525fa | 1859 | |
f8449323 RS |
1860 | if (byte_pos == BEG) |
1861 | /* Beginning of buffer is always a character boundary. */ | |
1862 | return 1; | |
1863 | ||
1864 | c = FETCH_BYTE (byte_pos); | |
1865 | if (! CHAR_HEAD_P (c)) | |
b05525fa | 1866 | { |
1be6387d | 1867 | /* We should advance BYTE_POS only when C is a constituent of a |
f8449323 | 1868 | multibyte sequence. */ |
a9bcded1 KH |
1869 | int orig_byte_pos = byte_pos; |
1870 | ||
1871 | do | |
1872 | { | |
1873 | byte_pos--; | |
1874 | c = FETCH_BYTE (byte_pos); | |
1875 | } | |
1876 | while (! CHAR_HEAD_P (c) && byte_pos > BEG); | |
f8449323 | 1877 | INC_POS (byte_pos); |
a9bcded1 KH |
1878 | if (byte_pos < orig_byte_pos) |
1879 | byte_pos = orig_byte_pos; | |
f8449323 RS |
1880 | /* If C is a constituent of a multibyte sequence, BYTE_POS was |
1881 | surely advance to the correct character boundary. If C is | |
1882 | not, BYTE_POS was unchanged. */ | |
b05525fa RS |
1883 | } |
1884 | ||
20773569 | 1885 | return byte_pos; |
b05525fa RS |
1886 | } |
1887 | ||
3ac81adb RS |
1888 | DEFUN ("set-buffer-multibyte", Fset_buffer_multibyte, Sset_buffer_multibyte, |
1889 | 1, 1, 0, | |
1890 | "Set the multibyte flag of the current buffer to FLAG.\n\ | |
1891 | If FLAG is t, this makes the buffer a multibyte buffer.\n\ | |
1892 | If FLAG is nil, this makes the buffer a single-byte buffer.\n\ | |
1893 | The buffer contents remain unchanged as a sequence of bytes\n\ | |
1894 | but the contents viewed as characters do change.") | |
1895 | (flag) | |
1896 | Lisp_Object flag; | |
1897 | { | |
1898 | Lisp_Object tail, markers; | |
abc9d959 | 1899 | struct buffer *other; |
a9bcded1 KH |
1900 | int undo_enabled_p = !EQ (current_buffer->undo_list, Qt); |
1901 | int begv = BEGV, zv = ZV; | |
1902 | int narrowed = (BEG != begv || Z != zv); | |
ed00559d | 1903 | int modified_p = !NILP (Fbuffer_modified_p (Qnil)); |
3ac81adb | 1904 | |
6e553d5e RS |
1905 | if (current_buffer->base_buffer) |
1906 | error ("Cannot do `set-buffer-multibyte' on an indirect buffer"); | |
1907 | ||
70e77119 AS |
1908 | /* Do nothing if nothing actually changes. */ |
1909 | if (NILP (flag) == NILP (current_buffer->enable_multibyte_characters)) | |
1910 | return flag; | |
1911 | ||
b05525fa RS |
1912 | /* It would be better to update the list, |
1913 | but this is good enough for now. */ | |
a9bcded1 KH |
1914 | if (undo_enabled_p) |
1915 | current_buffer->undo_list = Qt; | |
b05525fa | 1916 | |
3ac81adb RS |
1917 | /* If the cached position is for this buffer, clear it out. */ |
1918 | clear_charpos_cache (current_buffer); | |
1919 | ||
a9bcded1 KH |
1920 | if (narrowed) |
1921 | Fwiden (); | |
1922 | ||
3ac81adb RS |
1923 | if (NILP (flag)) |
1924 | { | |
a9bcded1 KH |
1925 | int pos, stop; |
1926 | unsigned char *p; | |
1927 | ||
3ac81adb RS |
1928 | /* Do this first, so it can use CHAR_TO_BYTE |
1929 | to calculate the old correspondences. */ | |
1930 | set_intervals_multibyte (0); | |
1931 | ||
1932 | current_buffer->enable_multibyte_characters = Qnil; | |
1933 | ||
1934 | Z = Z_BYTE; | |
1935 | BEGV = BEGV_BYTE; | |
1936 | ZV = ZV_BYTE; | |
1937 | GPT = GPT_BYTE; | |
1938 | TEMP_SET_PT_BOTH (PT_BYTE, PT_BYTE); | |
1939 | ||
1940 | tail = BUF_MARKERS (current_buffer); | |
8801a864 | 1941 | while (! NILP (tail)) |
3ac81adb RS |
1942 | { |
1943 | XMARKER (tail)->charpos = XMARKER (tail)->bytepos; | |
1944 | tail = XMARKER (tail)->chain; | |
1945 | } | |
a9bcded1 KH |
1946 | |
1947 | /* Convert multibyte form of 8-bit characters to unibyte. */ | |
1948 | pos = BEG; | |
1949 | stop = GPT; | |
1950 | p = BEG_ADDR; | |
1951 | while (1) | |
1952 | { | |
1953 | int c, bytes; | |
1954 | ||
1955 | if (pos == stop) | |
1956 | { | |
1957 | if (pos == Z) | |
1958 | break; | |
1959 | p = GAP_END_ADDR; | |
1960 | stop = Z; | |
1961 | } | |
1962 | if (MULTIBYTE_STR_AS_UNIBYTE_P (p, bytes)) | |
1963 | p += bytes, pos += bytes; | |
1964 | else | |
1965 | { | |
1966 | c = STRING_CHAR (p, stop - pos); | |
1967 | /* Delete all bytes for this 8-bit character but the | |
1968 | last one, and change the last one to the charcter | |
1969 | code. */ | |
1970 | bytes--; | |
1971 | del_range_2 (pos, pos, pos + bytes, pos + bytes, 0); | |
1972 | p = GAP_END_ADDR; | |
1973 | *p++ = c; | |
1974 | pos++; | |
1975 | if (begv > pos) | |
1976 | begv -= bytes; | |
1977 | if (zv > pos) | |
1978 | zv -= bytes; | |
1979 | stop = Z; | |
1980 | } | |
1981 | } | |
1982 | if (narrowed) | |
1983 | Fnarrow_to_region (make_number (begv), make_number (zv)); | |
3ac81adb RS |
1984 | } |
1985 | else | |
1986 | { | |
a9bcded1 KH |
1987 | int pt = PT; |
1988 | int pos, stop; | |
1989 | unsigned char *p; | |
1990 | ||
673c57d2 | 1991 | /* Be sure not to have a multibyte sequence striding over the GAP. |
a9bcded1 KH |
1992 | Ex: We change this: "...abc\201 _GAP_ \241def..." |
1993 | to: "...abc _GAP_ \201\241def..." */ | |
673c57d2 KH |
1994 | |
1995 | if (GPT_BYTE > 1 && GPT_BYTE < Z_BYTE | |
1996 | && ! CHAR_HEAD_P (*(GAP_END_ADDR))) | |
1997 | { | |
1998 | unsigned char *p = GPT_ADDR - 1; | |
1999 | ||
2000 | while (! CHAR_HEAD_P (*p) && p > BEG_ADDR) p--; | |
2001 | if (BASE_LEADING_CODE_P (*p)) | |
2002 | { | |
2003 | int new_gpt = GPT_BYTE - (GPT_ADDR - p); | |
2004 | ||
2005 | move_gap_both (new_gpt, new_gpt); | |
2006 | } | |
2007 | } | |
2008 | ||
a9bcded1 KH |
2009 | /* Make the buffer contents valid as multibyte by converting |
2010 | 8-bit characters to multibyte form. */ | |
2011 | pos = BEG; | |
2012 | stop = GPT; | |
2013 | p = BEG_ADDR; | |
2014 | while (1) | |
2015 | { | |
2016 | int bytes; | |
2017 | ||
2018 | if (pos == stop) | |
2019 | { | |
2020 | if (pos == Z) | |
2021 | break; | |
2022 | p = GAP_END_ADDR; | |
2023 | stop = Z; | |
2024 | } | |
2025 | ||
2026 | if (UNIBYTE_STR_AS_MULTIBYTE_P (p, stop - pos, bytes)) | |
2027 | p += bytes, pos += bytes; | |
2028 | else | |
2029 | { | |
2030 | unsigned char tmp[MAX_MULTIBYTE_LENGTH]; | |
2031 | ||
2032 | bytes = CHAR_STRING (*p, tmp); | |
2033 | *p = tmp[0]; | |
2034 | TEMP_SET_PT_BOTH (pos + 1, pos + 1); | |
2035 | bytes--; | |
2036 | insert_1_both (tmp + 1, bytes, bytes, 1, 0, 0); | |
2037 | /* Now the gap is after the just inserted data. */ | |
2038 | pos = GPT; | |
2039 | p = GAP_END_ADDR; | |
2040 | if (pos <= begv) | |
2041 | begv += bytes; | |
2042 | if (pos <= zv) | |
2043 | zv += bytes; | |
2044 | if (pos <= pt) | |
2045 | pt += bytes; | |
2046 | stop = Z; | |
2047 | } | |
2048 | } | |
2049 | ||
2050 | if (pt != PT) | |
2051 | TEMP_SET_PT (pt); | |
2052 | ||
2053 | if (narrowed) | |
2054 | Fnarrow_to_region (make_number (begv), make_number (zv)); | |
2055 | ||
3ac81adb RS |
2056 | /* Do this first, so that chars_in_text asks the right question. |
2057 | set_intervals_multibyte needs it too. */ | |
2058 | current_buffer->enable_multibyte_characters = Qt; | |
2059 | ||
b05525fa | 2060 | GPT_BYTE = advance_to_char_boundary (GPT_BYTE); |
3ac81adb | 2061 | GPT = chars_in_text (BEG_ADDR, GPT_BYTE - BEG_BYTE) + BEG; |
b05525fa | 2062 | |
673c57d2 | 2063 | Z = chars_in_text (GAP_END_ADDR, Z_BYTE - GPT_BYTE) + GPT; |
b05525fa RS |
2064 | |
2065 | BEGV_BYTE = advance_to_char_boundary (BEGV_BYTE); | |
3ac81adb | 2066 | if (BEGV_BYTE > GPT_BYTE) |
673c57d2 | 2067 | BEGV = chars_in_text (GAP_END_ADDR, BEGV_BYTE - GPT_BYTE) + GPT; |
3ac81adb RS |
2068 | else |
2069 | BEGV = chars_in_text (BEG_ADDR, BEGV_BYTE - BEG_BYTE) + BEG; | |
b05525fa RS |
2070 | |
2071 | ZV_BYTE = advance_to_char_boundary (ZV_BYTE); | |
3ac81adb | 2072 | if (ZV_BYTE > GPT_BYTE) |
673c57d2 | 2073 | ZV = chars_in_text (GAP_END_ADDR, ZV_BYTE - GPT_BYTE) + GPT; |
3ac81adb RS |
2074 | else |
2075 | ZV = chars_in_text (BEG_ADDR, ZV_BYTE - BEG_BYTE) + BEG; | |
b05525fa RS |
2076 | |
2077 | { | |
2078 | int pt_byte = advance_to_char_boundary (PT_BYTE); | |
2079 | int pt; | |
2080 | ||
2081 | if (pt_byte > GPT_BYTE) | |
673c57d2 | 2082 | pt = chars_in_text (GAP_END_ADDR, pt_byte - GPT_BYTE) + GPT; |
b05525fa RS |
2083 | else |
2084 | pt = chars_in_text (BEG_ADDR, pt_byte - BEG_BYTE) + BEG; | |
2085 | TEMP_SET_PT_BOTH (pt, pt_byte); | |
2086 | } | |
3ac81adb RS |
2087 | |
2088 | tail = markers = BUF_MARKERS (current_buffer); | |
95fb069b RS |
2089 | |
2090 | /* This prevents BYTE_TO_CHAR (that is, buf_bytepos_to_charpos) from | |
2091 | getting confused by the markers that have not yet been updated. | |
2092 | It is also a signal that it should never create a marker. */ | |
3ac81adb RS |
2093 | BUF_MARKERS (current_buffer) = Qnil; |
2094 | ||
8801a864 | 2095 | while (! NILP (tail)) |
3ac81adb | 2096 | { |
b05525fa RS |
2097 | XMARKER (tail)->bytepos |
2098 | = advance_to_char_boundary (XMARKER (tail)->bytepos); | |
3ac81adb | 2099 | XMARKER (tail)->charpos = BYTE_TO_CHAR (XMARKER (tail)->bytepos); |
b05525fa | 2100 | |
3ac81adb RS |
2101 | tail = XMARKER (tail)->chain; |
2102 | } | |
b69f9797 RS |
2103 | |
2104 | /* Make sure no markers were put on the chain | |
2105 | while the chain value was incorrect. */ | |
2106 | if (! EQ (BUF_MARKERS (current_buffer), Qnil)) | |
2107 | abort (); | |
2108 | ||
3ac81adb RS |
2109 | BUF_MARKERS (current_buffer) = markers; |
2110 | ||
2111 | /* Do this last, so it can calculate the new correspondences | |
2112 | between chars and bytes. */ | |
2113 | set_intervals_multibyte (1); | |
2114 | } | |
2115 | ||
a9bcded1 KH |
2116 | if (undo_enabled_p) |
2117 | current_buffer->undo_list = Qnil; | |
2118 | ||
724b203f GM |
2119 | /* Changing the multibyteness of a buffer means that all windows |
2120 | showing that buffer must be updated thoroughly. */ | |
2121 | current_buffer->prevent_redisplay_optimizations_p = 1; | |
2122 | ++windows_or_buffers_changed; | |
2123 | ||
abc9d959 RS |
2124 | /* Copy this buffer's new multibyte status |
2125 | into all of its indirect buffers. */ | |
2126 | for (other = all_buffers; other; other = other->next) | |
2127 | if (other->base_buffer == current_buffer && !NILP (other->name)) | |
724b203f GM |
2128 | { |
2129 | other->enable_multibyte_characters | |
2130 | = current_buffer->enable_multibyte_characters; | |
2131 | other->prevent_redisplay_optimizations_p = 1; | |
2132 | } | |
abc9d959 | 2133 | |
ed00559d KH |
2134 | /* Restore the modifiedness of the buffer. */ |
2135 | if (!modified_p && !NILP (Fbuffer_modified_p (Qnil))) | |
2136 | Fset_buffer_modified_p (Qnil); | |
2137 | ||
3ac81adb RS |
2138 | return flag; |
2139 | } | |
2140 | \f | |
1ab256cb RM |
2141 | DEFUN ("kill-all-local-variables", Fkill_all_local_variables, Skill_all_local_variables, |
2142 | 0, 0, 0, | |
2143 | "Switch to Fundamental mode by killing current buffer's local variables.\n\ | |
2144 | Most local variable bindings are eliminated so that the default values\n\ | |
2145 | become effective once more. Also, the syntax table is set from\n\ | |
2146 | `standard-syntax-table', the local keymap is set to nil,\n\ | |
2147 | and the abbrev table from `fundamental-mode-abbrev-table'.\n\ | |
2148 | This function also forces redisplay of the mode line.\n\ | |
2149 | \n\ | |
2150 | Every function to select a new major mode starts by\n\ | |
2151 | calling this function.\n\n\ | |
2152 | As a special exception, local variables whose names have\n\ | |
c5a15222 RS |
2153 | a non-nil `permanent-local' property are not eliminated by this function.\n\ |
2154 | \n\ | |
2155 | The first thing this function does is run\n\ | |
2156 | the normal hook `change-major-mode-hook'.") | |
1ab256cb RM |
2157 | () |
2158 | { | |
2159 | register Lisp_Object alist, sym, tem; | |
2160 | Lisp_Object oalist; | |
7410477a | 2161 | |
fd186f07 RS |
2162 | if (!NILP (Vrun_hooks)) |
2163 | call1 (Vrun_hooks, intern ("change-major-mode-hook")); | |
1ab256cb RM |
2164 | oalist = current_buffer->local_var_alist; |
2165 | ||
2f3f993b RS |
2166 | /* Make sure none of the bindings in oalist |
2167 | remain swapped in, in their symbols. */ | |
1ab256cb | 2168 | |
2f3f993b | 2169 | swap_out_buffer_local_variables (current_buffer); |
1ab256cb RM |
2170 | |
2171 | /* Actually eliminate all local bindings of this buffer. */ | |
2172 | ||
13de9290 | 2173 | reset_buffer_local_variables (current_buffer, 0); |
1ab256cb RM |
2174 | |
2175 | /* Redisplay mode lines; we are changing major mode. */ | |
2176 | ||
2177 | update_mode_lines++; | |
2178 | ||
2179 | /* Any which are supposed to be permanent, | |
2180 | make local again, with the same values they had. */ | |
2181 | ||
7539e11f | 2182 | for (alist = oalist; !NILP (alist); alist = XCDR (alist)) |
1ab256cb | 2183 | { |
7539e11f | 2184 | sym = XCAR (XCAR (alist)); |
1ab256cb | 2185 | tem = Fget (sym, Qpermanent_local); |
265a9e55 | 2186 | if (! NILP (tem)) |
01050cb5 RM |
2187 | { |
2188 | Fmake_local_variable (sym); | |
7539e11f | 2189 | Fset (sym, XCDR (XCAR (alist))); |
01050cb5 | 2190 | } |
1ab256cb RM |
2191 | } |
2192 | ||
2193 | /* Force mode-line redisplay. Useful here because all major mode | |
2194 | commands call this function. */ | |
2195 | update_mode_lines++; | |
2196 | ||
2197 | return Qnil; | |
2198 | } | |
2f3f993b RS |
2199 | |
2200 | /* Make sure no local variables remain set up with buffer B | |
2201 | for their current values. */ | |
2202 | ||
2203 | static void | |
2204 | swap_out_buffer_local_variables (b) | |
2205 | struct buffer *b; | |
2206 | { | |
2207 | Lisp_Object oalist, alist, sym, tem, buffer; | |
2208 | ||
2209 | XSETBUFFER (buffer, b); | |
2210 | oalist = b->local_var_alist; | |
2211 | ||
7539e11f | 2212 | for (alist = oalist; !NILP (alist); alist = XCDR (alist)) |
2f3f993b | 2213 | { |
7539e11f | 2214 | sym = XCAR (XCAR (alist)); |
2f3f993b RS |
2215 | |
2216 | /* Need not do anything if some other buffer's binding is now encached. */ | |
3d871c85 | 2217 | tem = XBUFFER_LOCAL_VALUE (XSYMBOL (sym)->value)->buffer; |
8801a864 | 2218 | if (BUFFERP (tem) && XBUFFER (tem) == current_buffer) |
2f3f993b RS |
2219 | { |
2220 | /* Symbol is set up for this buffer's old local value. | |
2221 | Set it up for the current buffer with the default value. */ | |
2222 | ||
3d871c85 | 2223 | tem = XBUFFER_LOCAL_VALUE (XSYMBOL (sym)->value)->cdr; |
2f3f993b RS |
2224 | /* Store the symbol's current value into the alist entry |
2225 | it is currently set up for. This is so that, if the | |
2226 | local is marked permanent, and we make it local again | |
2227 | later in Fkill_all_local_variables, we don't lose the value. */ | |
7539e11f | 2228 | XCDR (XCAR (tem)) |
3d871c85 | 2229 | = do_symval_forwarding (XBUFFER_LOCAL_VALUE (XSYMBOL (sym)->value)->realvalue); |
2f3f993b | 2230 | /* Switch to the symbol's default-value alist entry. */ |
7539e11f | 2231 | XCAR (tem) = tem; |
2f3f993b | 2232 | /* Mark it as current for buffer B. */ |
3d871c85 | 2233 | XBUFFER_LOCAL_VALUE (XSYMBOL (sym)->value)->buffer = buffer; |
2f3f993b | 2234 | /* Store the current value into any forwarding in the symbol. */ |
3d871c85 RS |
2235 | store_symval_forwarding (sym, |
2236 | XBUFFER_LOCAL_VALUE (XSYMBOL (sym)->value)->realvalue, | |
7539e11f | 2237 | XCDR (tem)); |
2f3f993b RS |
2238 | } |
2239 | } | |
2240 | } | |
1ab256cb | 2241 | \f |
2eec3b4e RS |
2242 | /* Find all the overlays in the current buffer that contain position POS. |
2243 | Return the number found, and store them in a vector in *VEC_PTR. | |
2244 | Store in *LEN_PTR the size allocated for the vector. | |
52f8ec73 JB |
2245 | Store in *NEXT_PTR the next position after POS where an overlay starts, |
2246 | or ZV if there are no more overlays. | |
bbbe9545 | 2247 | Store in *PREV_PTR the previous position before POS where an overlay ends, |
413e06a4 RS |
2248 | or where an overlay starts which ends at or after POS; |
2249 | or BEGV if there are no such overlays. | |
239c932b | 2250 | NEXT_PTR and/or PREV_PTR may be 0, meaning don't store that info. |
2eec3b4e RS |
2251 | |
2252 | *VEC_PTR and *LEN_PTR should contain a valid vector and size | |
61d54cd5 RS |
2253 | when this function is called. |
2254 | ||
2255 | If EXTEND is non-zero, we make the vector bigger if necessary. | |
2256 | If EXTEND is zero, we never extend the vector, | |
2257 | and we store only as many overlays as will fit. | |
ac869cf7 MB |
2258 | But we still return the total number of overlays. |
2259 | ||
2260 | If CHANGE_REQ is true, then any position written into *PREV_PTR or | |
2261 | *NEXT_PTR is guaranteed to be not equal to POS, unless it is the | |
2262 | default (BEGV or ZV). */ | |
2eec3b4e RS |
2263 | |
2264 | int | |
ac869cf7 | 2265 | overlays_at (pos, extend, vec_ptr, len_ptr, next_ptr, prev_ptr, change_req) |
2eec3b4e | 2266 | int pos; |
61d54cd5 | 2267 | int extend; |
2eec3b4e RS |
2268 | Lisp_Object **vec_ptr; |
2269 | int *len_ptr; | |
2270 | int *next_ptr; | |
239c932b | 2271 | int *prev_ptr; |
ac869cf7 | 2272 | int change_req; |
1ab256cb | 2273 | { |
6af718a4 | 2274 | Lisp_Object tail, overlay, start, end; |
2eec3b4e RS |
2275 | int idx = 0; |
2276 | int len = *len_ptr; | |
2277 | Lisp_Object *vec = *vec_ptr; | |
2278 | int next = ZV; | |
239c932b | 2279 | int prev = BEGV; |
61d54cd5 RS |
2280 | int inhibit_storing = 0; |
2281 | ||
2eec3b4e | 2282 | for (tail = current_buffer->overlays_before; |
8fc0589a | 2283 | GC_CONSP (tail); |
7539e11f | 2284 | tail = XCDR (tail)) |
2eec3b4e | 2285 | { |
239c932b | 2286 | int startpos, endpos; |
52f8ec73 | 2287 | |
7539e11f | 2288 | overlay = XCAR (tail); |
1ab256cb | 2289 | |
2eec3b4e RS |
2290 | start = OVERLAY_START (overlay); |
2291 | end = OVERLAY_END (overlay); | |
239c932b RS |
2292 | endpos = OVERLAY_POSITION (end); |
2293 | if (endpos < pos) | |
2294 | { | |
2295 | if (prev < endpos) | |
2296 | prev = endpos; | |
2297 | break; | |
2298 | } | |
413e06a4 RS |
2299 | startpos = OVERLAY_POSITION (start); |
2300 | /* This one ends at or after POS | |
daa1c109 | 2301 | so its start counts for PREV_PTR if it's before POS. */ |
413e06a4 RS |
2302 | if (prev < startpos && startpos < pos) |
2303 | prev = startpos; | |
239c932b RS |
2304 | if (endpos == pos) |
2305 | continue; | |
2eec3b4e RS |
2306 | if (startpos <= pos) |
2307 | { | |
2308 | if (idx == len) | |
2309 | { | |
61d54cd5 RS |
2310 | /* The supplied vector is full. |
2311 | Either make it bigger, or don't store any more in it. */ | |
2312 | if (extend) | |
2313 | { | |
0552666b GM |
2314 | /* Make it work with an initial len == 0. */ |
2315 | len *= 2; | |
2316 | if (len == 0) | |
2317 | len = 4; | |
2318 | *len_ptr = len; | |
61d54cd5 RS |
2319 | vec = (Lisp_Object *) xrealloc (vec, len * sizeof (Lisp_Object)); |
2320 | *vec_ptr = vec; | |
2321 | } | |
2322 | else | |
2323 | inhibit_storing = 1; | |
2eec3b4e | 2324 | } |
61d54cd5 RS |
2325 | |
2326 | if (!inhibit_storing) | |
2327 | vec[idx] = overlay; | |
2328 | /* Keep counting overlays even if we can't return them all. */ | |
2329 | idx++; | |
2eec3b4e RS |
2330 | } |
2331 | else if (startpos < next) | |
2332 | next = startpos; | |
2333 | } | |
2334 | ||
2335 | for (tail = current_buffer->overlays_after; | |
8fc0589a | 2336 | GC_CONSP (tail); |
7539e11f | 2337 | tail = XCDR (tail)) |
1ab256cb | 2338 | { |
239c932b | 2339 | int startpos, endpos; |
52f8ec73 | 2340 | |
7539e11f | 2341 | overlay = XCAR (tail); |
2eec3b4e RS |
2342 | |
2343 | start = OVERLAY_START (overlay); | |
2344 | end = OVERLAY_END (overlay); | |
2345 | startpos = OVERLAY_POSITION (start); | |
52f8ec73 | 2346 | if (pos < startpos) |
2eec3b4e RS |
2347 | { |
2348 | if (startpos < next) | |
2349 | next = startpos; | |
2350 | break; | |
2351 | } | |
239c932b RS |
2352 | endpos = OVERLAY_POSITION (end); |
2353 | if (pos < endpos) | |
2eec3b4e RS |
2354 | { |
2355 | if (idx == len) | |
2356 | { | |
61d54cd5 RS |
2357 | if (extend) |
2358 | { | |
2359 | *len_ptr = len *= 2; | |
0552666b GM |
2360 | if (len == 0) |
2361 | len = *len_ptr = 4; | |
61d54cd5 RS |
2362 | vec = (Lisp_Object *) xrealloc (vec, len * sizeof (Lisp_Object)); |
2363 | *vec_ptr = vec; | |
2364 | } | |
2365 | else | |
2366 | inhibit_storing = 1; | |
2eec3b4e | 2367 | } |
61d54cd5 RS |
2368 | |
2369 | if (!inhibit_storing) | |
2370 | vec[idx] = overlay; | |
2371 | idx++; | |
413e06a4 RS |
2372 | |
2373 | if (startpos < pos && startpos > prev) | |
2374 | prev = startpos; | |
2eec3b4e | 2375 | } |
239c932b RS |
2376 | else if (endpos < pos && endpos > prev) |
2377 | prev = endpos; | |
1d5f4c1d MB |
2378 | else if (endpos == pos && startpos > prev |
2379 | && (!change_req || startpos < pos)) | |
413e06a4 | 2380 | prev = startpos; |
1ab256cb RM |
2381 | } |
2382 | ||
239c932b RS |
2383 | if (next_ptr) |
2384 | *next_ptr = next; | |
2385 | if (prev_ptr) | |
2386 | *prev_ptr = prev; | |
2eec3b4e RS |
2387 | return idx; |
2388 | } | |
74514898 RS |
2389 | \f |
2390 | /* Find all the overlays in the current buffer that overlap the range BEG-END | |
2a3eeee7 RS |
2391 | or are empty at BEG. |
2392 | ||
74514898 RS |
2393 | Return the number found, and store them in a vector in *VEC_PTR. |
2394 | Store in *LEN_PTR the size allocated for the vector. | |
2395 | Store in *NEXT_PTR the next position after POS where an overlay starts, | |
2396 | or ZV if there are no more overlays. | |
2397 | Store in *PREV_PTR the previous position before POS where an overlay ends, | |
2398 | or BEGV if there are no previous overlays. | |
2399 | NEXT_PTR and/or PREV_PTR may be 0, meaning don't store that info. | |
2400 | ||
2401 | *VEC_PTR and *LEN_PTR should contain a valid vector and size | |
2402 | when this function is called. | |
2403 | ||
2404 | If EXTEND is non-zero, we make the vector bigger if necessary. | |
2405 | If EXTEND is zero, we never extend the vector, | |
2406 | and we store only as many overlays as will fit. | |
2407 | But we still return the total number of overlays. */ | |
2408 | ||
2409 | int | |
2410 | overlays_in (beg, end, extend, vec_ptr, len_ptr, next_ptr, prev_ptr) | |
2411 | int beg, end; | |
2412 | int extend; | |
2413 | Lisp_Object **vec_ptr; | |
2414 | int *len_ptr; | |
2415 | int *next_ptr; | |
2416 | int *prev_ptr; | |
2417 | { | |
6af718a4 | 2418 | Lisp_Object tail, overlay, ostart, oend; |
74514898 RS |
2419 | int idx = 0; |
2420 | int len = *len_ptr; | |
2421 | Lisp_Object *vec = *vec_ptr; | |
2422 | int next = ZV; | |
2423 | int prev = BEGV; | |
2424 | int inhibit_storing = 0; | |
2425 | ||
2426 | for (tail = current_buffer->overlays_before; | |
2427 | GC_CONSP (tail); | |
7539e11f | 2428 | tail = XCDR (tail)) |
74514898 RS |
2429 | { |
2430 | int startpos, endpos; | |
2431 | ||
7539e11f | 2432 | overlay = XCAR (tail); |
74514898 RS |
2433 | |
2434 | ostart = OVERLAY_START (overlay); | |
2435 | oend = OVERLAY_END (overlay); | |
2436 | endpos = OVERLAY_POSITION (oend); | |
2437 | if (endpos < beg) | |
2438 | { | |
2439 | if (prev < endpos) | |
2440 | prev = endpos; | |
2441 | break; | |
2442 | } | |
2443 | startpos = OVERLAY_POSITION (ostart); | |
2444 | /* Count an interval if it either overlaps the range | |
2a3eeee7 | 2445 | or is empty at the start of the range. */ |
74514898 | 2446 | if ((beg < endpos && startpos < end) |
2a3eeee7 | 2447 | || (startpos == endpos && beg == endpos)) |
74514898 RS |
2448 | { |
2449 | if (idx == len) | |
2450 | { | |
2451 | /* The supplied vector is full. | |
2452 | Either make it bigger, or don't store any more in it. */ | |
2453 | if (extend) | |
2454 | { | |
2455 | *len_ptr = len *= 2; | |
2456 | vec = (Lisp_Object *) xrealloc (vec, len * sizeof (Lisp_Object)); | |
2457 | *vec_ptr = vec; | |
2458 | } | |
2459 | else | |
2460 | inhibit_storing = 1; | |
2461 | } | |
2462 | ||
2463 | if (!inhibit_storing) | |
2464 | vec[idx] = overlay; | |
2465 | /* Keep counting overlays even if we can't return them all. */ | |
2466 | idx++; | |
2467 | } | |
2468 | else if (startpos < next) | |
2469 | next = startpos; | |
2470 | } | |
2471 | ||
2472 | for (tail = current_buffer->overlays_after; | |
2473 | GC_CONSP (tail); | |
7539e11f | 2474 | tail = XCDR (tail)) |
74514898 RS |
2475 | { |
2476 | int startpos, endpos; | |
2477 | ||
7539e11f | 2478 | overlay = XCAR (tail); |
74514898 RS |
2479 | |
2480 | ostart = OVERLAY_START (overlay); | |
2481 | oend = OVERLAY_END (overlay); | |
2482 | startpos = OVERLAY_POSITION (ostart); | |
2483 | if (end < startpos) | |
2484 | { | |
2485 | if (startpos < next) | |
2486 | next = startpos; | |
2487 | break; | |
2488 | } | |
2489 | endpos = OVERLAY_POSITION (oend); | |
2a3eeee7 RS |
2490 | /* Count an interval if it either overlaps the range |
2491 | or is empty at the start of the range. */ | |
74514898 | 2492 | if ((beg < endpos && startpos < end) |
2a3eeee7 | 2493 | || (startpos == endpos && beg == endpos)) |
74514898 RS |
2494 | { |
2495 | if (idx == len) | |
2496 | { | |
2497 | if (extend) | |
2498 | { | |
2499 | *len_ptr = len *= 2; | |
2500 | vec = (Lisp_Object *) xrealloc (vec, len * sizeof (Lisp_Object)); | |
2501 | *vec_ptr = vec; | |
2502 | } | |
2503 | else | |
2504 | inhibit_storing = 1; | |
2505 | } | |
2506 | ||
2507 | if (!inhibit_storing) | |
2508 | vec[idx] = overlay; | |
2509 | idx++; | |
2510 | } | |
2511 | else if (endpos < beg && endpos > prev) | |
2512 | prev = endpos; | |
2513 | } | |
fc04fa47 | 2514 | |
74514898 RS |
2515 | if (next_ptr) |
2516 | *next_ptr = next; | |
2517 | if (prev_ptr) | |
2518 | *prev_ptr = prev; | |
2519 | return idx; | |
2520 | } | |
2521 | \f | |
fc04fa47 KH |
2522 | /* Fast function to just test if we're at an overlay boundary. */ |
2523 | int | |
2524 | overlay_touches_p (pos) | |
2525 | int pos; | |
2526 | { | |
2527 | Lisp_Object tail, overlay; | |
2528 | ||
2529 | for (tail = current_buffer->overlays_before; GC_CONSP (tail); | |
7539e11f | 2530 | tail = XCDR (tail)) |
fc04fa47 KH |
2531 | { |
2532 | int endpos; | |
2533 | ||
7539e11f | 2534 | overlay = XCAR (tail); |
fc04fa47 KH |
2535 | if (!GC_OVERLAYP (overlay)) |
2536 | abort (); | |
2537 | ||
2538 | endpos = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
2539 | if (endpos < pos) | |
2540 | break; | |
2541 | if (endpos == pos || OVERLAY_POSITION (OVERLAY_START (overlay)) == pos) | |
2542 | return 1; | |
2543 | } | |
2544 | ||
2545 | for (tail = current_buffer->overlays_after; GC_CONSP (tail); | |
7539e11f | 2546 | tail = XCDR (tail)) |
fc04fa47 KH |
2547 | { |
2548 | int startpos; | |
2549 | ||
7539e11f | 2550 | overlay = XCAR (tail); |
fc04fa47 KH |
2551 | if (!GC_OVERLAYP (overlay)) |
2552 | abort (); | |
2553 | ||
2554 | startpos = OVERLAY_POSITION (OVERLAY_START (overlay)); | |
2555 | if (pos < startpos) | |
2556 | break; | |
2557 | if (startpos == pos || OVERLAY_POSITION (OVERLAY_END (overlay)) == pos) | |
2558 | return 1; | |
2559 | } | |
2560 | return 0; | |
2561 | } | |
2eec3b4e | 2562 | \f |
5985d248 KH |
2563 | struct sortvec |
2564 | { | |
2565 | Lisp_Object overlay; | |
2566 | int beg, end; | |
2567 | int priority; | |
2568 | }; | |
2569 | ||
2570 | static int | |
dfcf069d AS |
2571 | compare_overlays (v1, v2) |
2572 | const void *v1, *v2; | |
5985d248 | 2573 | { |
dfcf069d AS |
2574 | const struct sortvec *s1 = (const struct sortvec *) v1; |
2575 | const struct sortvec *s2 = (const struct sortvec *) v2; | |
5985d248 KH |
2576 | if (s1->priority != s2->priority) |
2577 | return s1->priority - s2->priority; | |
2578 | if (s1->beg != s2->beg) | |
2579 | return s1->beg - s2->beg; | |
2580 | if (s1->end != s2->end) | |
2581 | return s2->end - s1->end; | |
2582 | return 0; | |
2583 | } | |
2584 | ||
2585 | /* Sort an array of overlays by priority. The array is modified in place. | |
2586 | The return value is the new size; this may be smaller than the original | |
2587 | size if some of the overlays were invalid or were window-specific. */ | |
2588 | int | |
2589 | sort_overlays (overlay_vec, noverlays, w) | |
2590 | Lisp_Object *overlay_vec; | |
2591 | int noverlays; | |
2592 | struct window *w; | |
2593 | { | |
2594 | int i, j; | |
2595 | struct sortvec *sortvec; | |
2596 | sortvec = (struct sortvec *) alloca (noverlays * sizeof (struct sortvec)); | |
2597 | ||
2598 | /* Put the valid and relevant overlays into sortvec. */ | |
2599 | ||
2600 | for (i = 0, j = 0; i < noverlays; i++) | |
2601 | { | |
0fa767e7 | 2602 | Lisp_Object tem; |
c99fc30f | 2603 | Lisp_Object overlay; |
5985d248 | 2604 | |
c99fc30f | 2605 | overlay = overlay_vec[i]; |
5985d248 KH |
2606 | if (OVERLAY_VALID (overlay) |
2607 | && OVERLAY_POSITION (OVERLAY_START (overlay)) > 0 | |
2608 | && OVERLAY_POSITION (OVERLAY_END (overlay)) > 0) | |
2609 | { | |
0fa767e7 KH |
2610 | /* If we're interested in a specific window, then ignore |
2611 | overlays that are limited to some other window. */ | |
2612 | if (w) | |
5985d248 | 2613 | { |
0fa767e7 KH |
2614 | Lisp_Object window; |
2615 | ||
2616 | window = Foverlay_get (overlay, Qwindow); | |
a7a60ce9 | 2617 | if (WINDOWP (window) && XWINDOW (window) != w) |
0fa767e7 | 2618 | continue; |
5985d248 | 2619 | } |
0fa767e7 KH |
2620 | |
2621 | /* This overlay is good and counts: put it into sortvec. */ | |
2622 | sortvec[j].overlay = overlay; | |
2623 | sortvec[j].beg = OVERLAY_POSITION (OVERLAY_START (overlay)); | |
2624 | sortvec[j].end = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
2625 | tem = Foverlay_get (overlay, Qpriority); | |
2626 | if (INTEGERP (tem)) | |
2627 | sortvec[j].priority = XINT (tem); | |
2628 | else | |
2629 | sortvec[j].priority = 0; | |
2630 | j++; | |
5985d248 KH |
2631 | } |
2632 | } | |
2633 | noverlays = j; | |
2634 | ||
2635 | /* Sort the overlays into the proper order: increasing priority. */ | |
2636 | ||
2637 | if (noverlays > 1) | |
2638 | qsort (sortvec, noverlays, sizeof (struct sortvec), compare_overlays); | |
2639 | ||
2640 | for (i = 0; i < noverlays; i++) | |
2641 | overlay_vec[i] = sortvec[i].overlay; | |
2642 | return (noverlays); | |
2643 | } | |
2644 | \f | |
bbbe9545 KH |
2645 | struct sortstr |
2646 | { | |
cb26008f | 2647 | Lisp_Object string, string2; |
bbbe9545 KH |
2648 | int size; |
2649 | int priority; | |
2650 | }; | |
2651 | ||
e8185fa8 KH |
2652 | struct sortstrlist |
2653 | { | |
2654 | struct sortstr *buf; /* An array that expands as needed; never freed. */ | |
2655 | int size; /* Allocated length of that array. */ | |
2656 | int used; /* How much of the array is currently in use. */ | |
2657 | int bytes; /* Total length of the strings in buf. */ | |
2658 | }; | |
2659 | ||
2660 | /* Buffers for storing information about the overlays touching a given | |
2661 | position. These could be automatic variables in overlay_strings, but | |
2662 | it's more efficient to hold onto the memory instead of repeatedly | |
2663 | allocating and freeing it. */ | |
2664 | static struct sortstrlist overlay_heads, overlay_tails; | |
9492daf2 | 2665 | static unsigned char *overlay_str_buf; |
e8185fa8 KH |
2666 | |
2667 | /* Allocated length of overlay_str_buf. */ | |
2668 | static int overlay_str_len; | |
2669 | ||
bbbe9545 KH |
2670 | /* A comparison function suitable for passing to qsort. */ |
2671 | static int | |
2672 | cmp_for_strings (as1, as2) | |
2673 | char *as1, *as2; | |
2674 | { | |
2675 | struct sortstr *s1 = (struct sortstr *)as1; | |
2676 | struct sortstr *s2 = (struct sortstr *)as2; | |
2677 | if (s1->size != s2->size) | |
2678 | return s2->size - s1->size; | |
2679 | if (s1->priority != s2->priority) | |
2680 | return s1->priority - s2->priority; | |
2681 | return 0; | |
2682 | } | |
2683 | ||
e8185fa8 | 2684 | static void |
cb26008f | 2685 | record_overlay_string (ssl, str, str2, pri, size) |
e8185fa8 | 2686 | struct sortstrlist *ssl; |
cb26008f | 2687 | Lisp_Object str, str2, pri; |
e8185fa8 KH |
2688 | int size; |
2689 | { | |
43d27a72 RS |
2690 | int nbytes; |
2691 | ||
e8185fa8 KH |
2692 | if (ssl->used == ssl->size) |
2693 | { | |
2694 | if (ssl->buf) | |
2695 | ssl->size *= 2; | |
2696 | else | |
2697 | ssl->size = 5; | |
2698 | ssl->buf = ((struct sortstr *) | |
2699 | xrealloc (ssl->buf, ssl->size * sizeof (struct sortstr))); | |
2700 | } | |
2701 | ssl->buf[ssl->used].string = str; | |
cb26008f | 2702 | ssl->buf[ssl->used].string2 = str2; |
e8185fa8 KH |
2703 | ssl->buf[ssl->used].size = size; |
2704 | ssl->buf[ssl->used].priority = (INTEGERP (pri) ? XINT (pri) : 0); | |
2705 | ssl->used++; | |
43d27a72 RS |
2706 | |
2707 | if (NILP (current_buffer->enable_multibyte_characters)) | |
2708 | nbytes = XSTRING (str)->size; | |
2709 | else if (! STRING_MULTIBYTE (str)) | |
2710 | nbytes = count_size_as_multibyte (XSTRING (str)->data, | |
fc932ac6 | 2711 | STRING_BYTES (XSTRING (str))); |
43d27a72 | 2712 | else |
fc932ac6 | 2713 | nbytes = STRING_BYTES (XSTRING (str)); |
43d27a72 RS |
2714 | |
2715 | ssl->bytes += nbytes; | |
2716 | ||
cb26008f | 2717 | if (STRINGP (str2)) |
43d27a72 RS |
2718 | { |
2719 | if (NILP (current_buffer->enable_multibyte_characters)) | |
2720 | nbytes = XSTRING (str2)->size; | |
2721 | else if (! STRING_MULTIBYTE (str2)) | |
2722 | nbytes = count_size_as_multibyte (XSTRING (str2)->data, | |
fc932ac6 | 2723 | STRING_BYTES (XSTRING (str2))); |
43d27a72 | 2724 | else |
fc932ac6 | 2725 | nbytes = STRING_BYTES (XSTRING (str2)); |
43d27a72 RS |
2726 | |
2727 | ssl->bytes += nbytes; | |
2728 | } | |
e8185fa8 | 2729 | } |
bbbe9545 KH |
2730 | |
2731 | /* Return the concatenation of the strings associated with overlays that | |
2732 | begin or end at POS, ignoring overlays that are specific to a window | |
2733 | other than W. The strings are concatenated in the appropriate order: | |
2734 | shorter overlays nest inside longer ones, and higher priority inside | |
cb26008f KH |
2735 | lower. Normally all of the after-strings come first, but zero-sized |
2736 | overlays have their after-strings ride along with the before-strings | |
2737 | because it would look strange to print them inside-out. | |
2738 | ||
2739 | Returns the string length, and stores the contents indirectly through | |
2740 | PSTR, if that variable is non-null. The string may be overwritten by | |
2741 | subsequent calls. */ | |
6b5d3b89 | 2742 | |
bbbe9545 KH |
2743 | int |
2744 | overlay_strings (pos, w, pstr) | |
2745 | int pos; | |
2746 | struct window *w; | |
6b5d3b89 | 2747 | unsigned char **pstr; |
bbbe9545 | 2748 | { |
e8185fa8 | 2749 | Lisp_Object ov, overlay, window, str; |
bbbe9545 | 2750 | int startpos, endpos; |
43d27a72 | 2751 | int multibyte = ! NILP (current_buffer->enable_multibyte_characters); |
bbbe9545 | 2752 | |
e8185fa8 KH |
2753 | overlay_heads.used = overlay_heads.bytes = 0; |
2754 | overlay_tails.used = overlay_tails.bytes = 0; | |
7539e11f | 2755 | for (ov = current_buffer->overlays_before; CONSP (ov); ov = XCDR (ov)) |
bbbe9545 | 2756 | { |
7539e11f | 2757 | overlay = XCAR (ov); |
bbbe9545 KH |
2758 | if (!OVERLAYP (overlay)) |
2759 | abort (); | |
2760 | ||
2761 | startpos = OVERLAY_POSITION (OVERLAY_START (overlay)); | |
2762 | endpos = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
2763 | if (endpos < pos) | |
2764 | break; | |
2765 | if (endpos != pos && startpos != pos) | |
2766 | continue; | |
2767 | window = Foverlay_get (overlay, Qwindow); | |
2768 | if (WINDOWP (window) && XWINDOW (window) != w) | |
2769 | continue; | |
e8185fa8 KH |
2770 | if (startpos == pos |
2771 | && (str = Foverlay_get (overlay, Qbefore_string), STRINGP (str))) | |
2772 | record_overlay_string (&overlay_heads, str, | |
cb26008f KH |
2773 | (startpos == endpos |
2774 | ? Foverlay_get (overlay, Qafter_string) | |
2775 | : Qnil), | |
2776 | Foverlay_get (overlay, Qpriority), | |
2777 | endpos - startpos); | |
2778 | else if (endpos == pos | |
2779 | && (str = Foverlay_get (overlay, Qafter_string), STRINGP (str))) | |
2780 | record_overlay_string (&overlay_tails, str, Qnil, | |
e8185fa8 KH |
2781 | Foverlay_get (overlay, Qpriority), |
2782 | endpos - startpos); | |
bbbe9545 | 2783 | } |
7539e11f | 2784 | for (ov = current_buffer->overlays_after; CONSP (ov); ov = XCDR (ov)) |
bbbe9545 | 2785 | { |
7539e11f | 2786 | overlay = XCAR (ov); |
bbbe9545 KH |
2787 | if (!OVERLAYP (overlay)) |
2788 | abort (); | |
2789 | ||
2790 | startpos = OVERLAY_POSITION (OVERLAY_START (overlay)); | |
2791 | endpos = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
2792 | if (startpos > pos) | |
2793 | break; | |
e8185fa8 KH |
2794 | if (endpos != pos && startpos != pos) |
2795 | continue; | |
2796 | window = Foverlay_get (overlay, Qwindow); | |
2797 | if (WINDOWP (window) && XWINDOW (window) != w) | |
2798 | continue; | |
e8185fa8 KH |
2799 | if (startpos == pos |
2800 | && (str = Foverlay_get (overlay, Qbefore_string), STRINGP (str))) | |
2801 | record_overlay_string (&overlay_heads, str, | |
cb26008f KH |
2802 | (startpos == endpos |
2803 | ? Foverlay_get (overlay, Qafter_string) | |
2804 | : Qnil), | |
2805 | Foverlay_get (overlay, Qpriority), | |
2806 | endpos - startpos); | |
2807 | else if (endpos == pos | |
2808 | && (str = Foverlay_get (overlay, Qafter_string), STRINGP (str))) | |
2809 | record_overlay_string (&overlay_tails, str, Qnil, | |
e8185fa8 KH |
2810 | Foverlay_get (overlay, Qpriority), |
2811 | endpos - startpos); | |
bbbe9545 | 2812 | } |
e8185fa8 KH |
2813 | if (overlay_tails.used > 1) |
2814 | qsort (overlay_tails.buf, overlay_tails.used, sizeof (struct sortstr), | |
2815 | cmp_for_strings); | |
2816 | if (overlay_heads.used > 1) | |
2817 | qsort (overlay_heads.buf, overlay_heads.used, sizeof (struct sortstr), | |
2818 | cmp_for_strings); | |
2819 | if (overlay_heads.bytes || overlay_tails.bytes) | |
bbbe9545 | 2820 | { |
e8185fa8 | 2821 | Lisp_Object tem; |
bbbe9545 | 2822 | int i; |
9f4d7cde | 2823 | unsigned char *p; |
e8185fa8 | 2824 | int total = overlay_heads.bytes + overlay_tails.bytes; |
bbbe9545 KH |
2825 | |
2826 | if (total > overlay_str_len) | |
9f4d7cde RS |
2827 | { |
2828 | overlay_str_len = total; | |
2829 | overlay_str_buf = (unsigned char *)xrealloc (overlay_str_buf, | |
2830 | total); | |
2831 | } | |
bbbe9545 | 2832 | p = overlay_str_buf; |
e8185fa8 | 2833 | for (i = overlay_tails.used; --i >= 0;) |
bbbe9545 | 2834 | { |
43d27a72 | 2835 | int nbytes; |
e8185fa8 | 2836 | tem = overlay_tails.buf[i].string; |
fc932ac6 RS |
2837 | nbytes = copy_text (XSTRING (tem)->data, p, |
2838 | STRING_BYTES (XSTRING (tem)), | |
43d27a72 RS |
2839 | STRING_MULTIBYTE (tem), multibyte); |
2840 | p += nbytes; | |
bbbe9545 | 2841 | } |
e8185fa8 | 2842 | for (i = 0; i < overlay_heads.used; ++i) |
bbbe9545 | 2843 | { |
43d27a72 | 2844 | int nbytes; |
e8185fa8 | 2845 | tem = overlay_heads.buf[i].string; |
fc932ac6 RS |
2846 | nbytes = copy_text (XSTRING (tem)->data, p, |
2847 | STRING_BYTES (XSTRING (tem)), | |
43d27a72 RS |
2848 | STRING_MULTIBYTE (tem), multibyte); |
2849 | p += nbytes; | |
cb26008f KH |
2850 | tem = overlay_heads.buf[i].string2; |
2851 | if (STRINGP (tem)) | |
2852 | { | |
43d27a72 | 2853 | nbytes = copy_text (XSTRING (tem)->data, p, |
fc932ac6 | 2854 | STRING_BYTES (XSTRING (tem)), |
43d27a72 RS |
2855 | STRING_MULTIBYTE (tem), multibyte); |
2856 | p += nbytes; | |
cb26008f | 2857 | } |
bbbe9545 | 2858 | } |
cb26008f KH |
2859 | if (p != overlay_str_buf + total) |
2860 | abort (); | |
bbbe9545 KH |
2861 | if (pstr) |
2862 | *pstr = overlay_str_buf; | |
e8185fa8 | 2863 | return total; |
bbbe9545 | 2864 | } |
e8185fa8 | 2865 | return 0; |
bbbe9545 KH |
2866 | } |
2867 | \f | |
5c4f68f1 | 2868 | /* Shift overlays in BUF's overlay lists, to center the lists at POS. */ |
1ab256cb | 2869 | |
2eec3b4e | 2870 | void |
5c4f68f1 JB |
2871 | recenter_overlay_lists (buf, pos) |
2872 | struct buffer *buf; | |
2eec3b4e RS |
2873 | int pos; |
2874 | { | |
2875 | Lisp_Object overlay, tail, next, prev, beg, end; | |
2876 | ||
2877 | /* See if anything in overlays_before should move to overlays_after. */ | |
2878 | ||
2879 | /* We don't strictly need prev in this loop; it should always be nil. | |
2880 | But we use it for symmetry and in case that should cease to be true | |
2881 | with some future change. */ | |
2882 | prev = Qnil; | |
5c4f68f1 | 2883 | for (tail = buf->overlays_before; |
2eec3b4e RS |
2884 | CONSP (tail); |
2885 | prev = tail, tail = next) | |
1ab256cb | 2886 | { |
7539e11f KR |
2887 | next = XCDR (tail); |
2888 | overlay = XCAR (tail); | |
2eec3b4e RS |
2889 | |
2890 | /* If the overlay is not valid, get rid of it. */ | |
2891 | if (!OVERLAY_VALID (overlay)) | |
52f8ec73 JB |
2892 | #if 1 |
2893 | abort (); | |
2894 | #else | |
2eec3b4e RS |
2895 | { |
2896 | /* Splice the cons cell TAIL out of overlays_before. */ | |
2897 | if (!NILP (prev)) | |
7539e11f | 2898 | XCDR (prev) = next; |
2eec3b4e | 2899 | else |
5c4f68f1 | 2900 | buf->overlays_before = next; |
2eec3b4e RS |
2901 | tail = prev; |
2902 | continue; | |
2903 | } | |
52f8ec73 | 2904 | #endif |
1ab256cb | 2905 | |
2eec3b4e RS |
2906 | beg = OVERLAY_START (overlay); |
2907 | end = OVERLAY_END (overlay); | |
1ab256cb | 2908 | |
2eec3b4e | 2909 | if (OVERLAY_POSITION (end) > pos) |
1ab256cb | 2910 | { |
2eec3b4e RS |
2911 | /* OVERLAY needs to be moved. */ |
2912 | int where = OVERLAY_POSITION (beg); | |
2913 | Lisp_Object other, other_prev; | |
2914 | ||
2915 | /* Splice the cons cell TAIL out of overlays_before. */ | |
2916 | if (!NILP (prev)) | |
7539e11f | 2917 | XCDR (prev) = next; |
2eec3b4e | 2918 | else |
5c4f68f1 | 2919 | buf->overlays_before = next; |
2eec3b4e RS |
2920 | |
2921 | /* Search thru overlays_after for where to put it. */ | |
2922 | other_prev = Qnil; | |
5c4f68f1 | 2923 | for (other = buf->overlays_after; |
2eec3b4e | 2924 | CONSP (other); |
7539e11f | 2925 | other_prev = other, other = XCDR (other)) |
1ab256cb | 2926 | { |
6af718a4 | 2927 | Lisp_Object otherbeg, otheroverlay; |
2eec3b4e | 2928 | |
7539e11f | 2929 | otheroverlay = XCAR (other); |
2eec3b4e | 2930 | if (! OVERLAY_VALID (otheroverlay)) |
52f8ec73 | 2931 | abort (); |
2eec3b4e RS |
2932 | |
2933 | otherbeg = OVERLAY_START (otheroverlay); | |
2934 | if (OVERLAY_POSITION (otherbeg) >= where) | |
2935 | break; | |
1ab256cb | 2936 | } |
2eec3b4e RS |
2937 | |
2938 | /* Add TAIL to overlays_after before OTHER. */ | |
7539e11f | 2939 | XCDR (tail) = other; |
2eec3b4e | 2940 | if (!NILP (other_prev)) |
7539e11f | 2941 | XCDR (other_prev) = tail; |
1ab256cb | 2942 | else |
5c4f68f1 | 2943 | buf->overlays_after = tail; |
2eec3b4e | 2944 | tail = prev; |
1ab256cb | 2945 | } |
2eec3b4e RS |
2946 | else |
2947 | /* We've reached the things that should stay in overlays_before. | |
2948 | All the rest of overlays_before must end even earlier, | |
2949 | so stop now. */ | |
2950 | break; | |
2951 | } | |
2952 | ||
2953 | /* See if anything in overlays_after should be in overlays_before. */ | |
2954 | prev = Qnil; | |
5c4f68f1 | 2955 | for (tail = buf->overlays_after; |
2eec3b4e RS |
2956 | CONSP (tail); |
2957 | prev = tail, tail = next) | |
2958 | { | |
7539e11f KR |
2959 | next = XCDR (tail); |
2960 | overlay = XCAR (tail); | |
2eec3b4e RS |
2961 | |
2962 | /* If the overlay is not valid, get rid of it. */ | |
2963 | if (!OVERLAY_VALID (overlay)) | |
52f8ec73 JB |
2964 | #if 1 |
2965 | abort (); | |
2966 | #else | |
2eec3b4e RS |
2967 | { |
2968 | /* Splice the cons cell TAIL out of overlays_after. */ | |
2969 | if (!NILP (prev)) | |
7539e11f | 2970 | XCDR (prev) = next; |
2eec3b4e | 2971 | else |
5c4f68f1 | 2972 | buf->overlays_after = next; |
2eec3b4e RS |
2973 | tail = prev; |
2974 | continue; | |
2975 | } | |
52f8ec73 | 2976 | #endif |
2eec3b4e RS |
2977 | |
2978 | beg = OVERLAY_START (overlay); | |
2979 | end = OVERLAY_END (overlay); | |
2980 | ||
2981 | /* Stop looking, when we know that nothing further | |
2982 | can possibly end before POS. */ | |
2983 | if (OVERLAY_POSITION (beg) > pos) | |
2984 | break; | |
2985 | ||
2986 | if (OVERLAY_POSITION (end) <= pos) | |
2987 | { | |
2988 | /* OVERLAY needs to be moved. */ | |
2989 | int where = OVERLAY_POSITION (end); | |
2990 | Lisp_Object other, other_prev; | |
2991 | ||
2992 | /* Splice the cons cell TAIL out of overlays_after. */ | |
2993 | if (!NILP (prev)) | |
7539e11f | 2994 | XCDR (prev) = next; |
2eec3b4e | 2995 | else |
5c4f68f1 | 2996 | buf->overlays_after = next; |
2eec3b4e RS |
2997 | |
2998 | /* Search thru overlays_before for where to put it. */ | |
2999 | other_prev = Qnil; | |
5c4f68f1 | 3000 | for (other = buf->overlays_before; |
2eec3b4e | 3001 | CONSP (other); |
7539e11f | 3002 | other_prev = other, other = XCDR (other)) |
2eec3b4e RS |
3003 | { |
3004 | Lisp_Object otherend, otheroverlay; | |
2eec3b4e | 3005 | |
7539e11f | 3006 | otheroverlay = XCAR (other); |
2eec3b4e | 3007 | if (! OVERLAY_VALID (otheroverlay)) |
52f8ec73 | 3008 | abort (); |
2eec3b4e RS |
3009 | |
3010 | otherend = OVERLAY_END (otheroverlay); | |
3011 | if (OVERLAY_POSITION (otherend) <= where) | |
3012 | break; | |
3013 | } | |
3014 | ||
3015 | /* Add TAIL to overlays_before before OTHER. */ | |
7539e11f | 3016 | XCDR (tail) = other; |
2eec3b4e | 3017 | if (!NILP (other_prev)) |
7539e11f | 3018 | XCDR (other_prev) = tail; |
2eec3b4e | 3019 | else |
5c4f68f1 | 3020 | buf->overlays_before = tail; |
2eec3b4e RS |
3021 | tail = prev; |
3022 | } | |
3023 | } | |
3024 | ||
8d7a4592 | 3025 | XSETFASTINT (buf->overlay_center, pos); |
2eec3b4e | 3026 | } |
2b1bdf65 | 3027 | |
423cdb46 KH |
3028 | void |
3029 | adjust_overlays_for_insert (pos, length) | |
3030 | int pos; | |
3031 | int length; | |
3032 | { | |
3033 | /* After an insertion, the lists are still sorted properly, | |
3034 | but we may need to update the value of the overlay center. */ | |
3035 | if (XFASTINT (current_buffer->overlay_center) >= pos) | |
3036 | XSETFASTINT (current_buffer->overlay_center, | |
3037 | XFASTINT (current_buffer->overlay_center) + length); | |
3038 | } | |
3039 | ||
3040 | void | |
3041 | adjust_overlays_for_delete (pos, length) | |
3042 | int pos; | |
3043 | int length; | |
3044 | { | |
3045 | if (XFASTINT (current_buffer->overlay_center) < pos) | |
3046 | /* The deletion was to our right. No change needed; the before- and | |
3047 | after-lists are still consistent. */ | |
3048 | ; | |
3049 | else if (XFASTINT (current_buffer->overlay_center) > pos + length) | |
3050 | /* The deletion was to our left. We need to adjust the center value | |
3051 | to account for the change in position, but the lists are consistent | |
3052 | given the new value. */ | |
3053 | XSETFASTINT (current_buffer->overlay_center, | |
3054 | XFASTINT (current_buffer->overlay_center) - length); | |
3055 | else | |
3056 | /* We're right in the middle. There might be things on the after-list | |
3057 | that now belong on the before-list. Recentering will move them, | |
3058 | and also update the center point. */ | |
3059 | recenter_overlay_lists (current_buffer, pos); | |
3060 | } | |
3061 | ||
2b1bdf65 KH |
3062 | /* Fix up overlays that were garbled as a result of permuting markers |
3063 | in the range START through END. Any overlay with at least one | |
3064 | endpoint in this range will need to be unlinked from the overlay | |
3065 | list and reinserted in its proper place. | |
3066 | Such an overlay might even have negative size at this point. | |
3067 | If so, we'll reverse the endpoints. Can you think of anything | |
3068 | better to do in this situation? */ | |
3069 | void | |
3070 | fix_overlays_in_range (start, end) | |
3071 | register int start, end; | |
3072 | { | |
6af718a4 | 3073 | Lisp_Object overlay; |
2b1bdf65 KH |
3074 | Lisp_Object before_list, after_list; |
3075 | Lisp_Object *ptail, *pbefore = &before_list, *pafter = &after_list; | |
3076 | int startpos, endpos; | |
3077 | ||
3078 | /* This algorithm shifts links around instead of consing and GCing. | |
3079 | The loop invariant is that before_list (resp. after_list) is a | |
3080 | well-formed list except that its last element, the one that | |
3081 | *pbefore (resp. *pafter) points to, is still uninitialized. | |
3082 | So it's not a bug that before_list isn't initialized, although | |
3083 | it may look strange. */ | |
3084 | for (ptail = ¤t_buffer->overlays_before; CONSP (*ptail);) | |
3085 | { | |
7539e11f | 3086 | overlay = XCAR (*ptail); |
2b1bdf65 KH |
3087 | endpos = OVERLAY_POSITION (OVERLAY_END (overlay)); |
3088 | if (endpos < start) | |
3089 | break; | |
3090 | startpos = OVERLAY_POSITION (OVERLAY_START (overlay)); | |
3091 | if (endpos < end | |
3092 | || (startpos >= start && startpos < end)) | |
3093 | { | |
3094 | /* If the overlay is backwards, fix that now. */ | |
3095 | if (startpos > endpos) | |
3096 | { | |
3097 | int tem; | |
2c99f3ea RS |
3098 | Fset_marker (OVERLAY_START (overlay), make_number (endpos), |
3099 | Qnil); | |
3100 | Fset_marker (OVERLAY_END (overlay), make_number (startpos), | |
3101 | Qnil); | |
2b1bdf65 KH |
3102 | tem = startpos; startpos = endpos; endpos = tem; |
3103 | } | |
3104 | /* Add it to the end of the wrong list. Later on, | |
3105 | recenter_overlay_lists will move it to the right place. */ | |
3106 | if (endpos < XINT (current_buffer->overlay_center)) | |
3107 | { | |
3108 | *pafter = *ptail; | |
7539e11f | 3109 | pafter = &XCDR (*ptail); |
2b1bdf65 KH |
3110 | } |
3111 | else | |
3112 | { | |
3113 | *pbefore = *ptail; | |
7539e11f | 3114 | pbefore = &XCDR (*ptail); |
2b1bdf65 | 3115 | } |
7539e11f | 3116 | *ptail = XCDR (*ptail); |
2b1bdf65 KH |
3117 | } |
3118 | else | |
7539e11f | 3119 | ptail = &XCDR (*ptail); |
2b1bdf65 KH |
3120 | } |
3121 | for (ptail = ¤t_buffer->overlays_after; CONSP (*ptail);) | |
3122 | { | |
7539e11f | 3123 | overlay = XCAR (*ptail); |
2b1bdf65 KH |
3124 | startpos = OVERLAY_POSITION (OVERLAY_START (overlay)); |
3125 | if (startpos >= end) | |
3126 | break; | |
3127 | endpos = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
3128 | if (startpos >= start | |
3129 | || (endpos >= start && endpos < end)) | |
3130 | { | |
3131 | if (startpos > endpos) | |
3132 | { | |
3133 | int tem; | |
2c99f3ea RS |
3134 | Fset_marker (OVERLAY_START (overlay), make_number (endpos), |
3135 | Qnil); | |
3136 | Fset_marker (OVERLAY_END (overlay), make_number (startpos), | |
3137 | Qnil); | |
2b1bdf65 KH |
3138 | tem = startpos; startpos = endpos; endpos = tem; |
3139 | } | |
3140 | if (endpos < XINT (current_buffer->overlay_center)) | |
3141 | { | |
3142 | *pafter = *ptail; | |
7539e11f | 3143 | pafter = &XCDR (*ptail); |
2b1bdf65 KH |
3144 | } |
3145 | else | |
3146 | { | |
3147 | *pbefore = *ptail; | |
7539e11f | 3148 | pbefore = &XCDR (*ptail); |
2b1bdf65 | 3149 | } |
7539e11f | 3150 | *ptail = XCDR (*ptail); |
2b1bdf65 KH |
3151 | } |
3152 | else | |
7539e11f | 3153 | ptail = &XCDR (*ptail); |
2b1bdf65 KH |
3154 | } |
3155 | ||
3156 | /* Splice the constructed (wrong) lists into the buffer's lists, | |
3157 | and let the recenter function make it sane again. */ | |
3158 | *pbefore = current_buffer->overlays_before; | |
3159 | current_buffer->overlays_before = before_list; | |
3160 | recenter_overlay_lists (current_buffer, | |
3161 | XINT (current_buffer->overlay_center)); | |
3162 | ||
3163 | *pafter = current_buffer->overlays_after; | |
3164 | current_buffer->overlays_after = after_list; | |
3165 | recenter_overlay_lists (current_buffer, | |
3166 | XINT (current_buffer->overlay_center)); | |
3167 | } | |
3b06f880 KH |
3168 | |
3169 | /* We have two types of overlay: the one whose ending marker is | |
3170 | after-insertion-marker (this is the usual case) and the one whose | |
3171 | ending marker is before-insertion-marker. When `overlays_before' | |
3172 | contains overlays of the latter type and the former type in this | |
3173 | order and both overlays end at inserting position, inserting a text | |
3174 | increases only the ending marker of the latter type, which results | |
3175 | in incorrect ordering of `overlays_before'. | |
3176 | ||
3177 | This function fixes ordering of overlays in the slot | |
3178 | `overlays_before' of the buffer *BP. Before the insertion, `point' | |
3179 | was at PREV, and now is at POS. */ | |
3180 | ||
01136e9b | 3181 | void |
3b06f880 KH |
3182 | fix_overlays_before (bp, prev, pos) |
3183 | struct buffer *bp; | |
3184 | int prev, pos; | |
3185 | { | |
3186 | Lisp_Object *tailp = &bp->overlays_before; | |
3187 | Lisp_Object *right_place; | |
3188 | int end; | |
3189 | ||
3190 | /* After the insertion, the several overlays may be in incorrect | |
3191 | order. The possibility is that, in the list `overlays_before', | |
3192 | an overlay which ends at POS appears after an overlay which ends | |
3193 | at PREV. Since POS is greater than PREV, we must fix the | |
3194 | ordering of these overlays, by moving overlays ends at POS before | |
3195 | the overlays ends at PREV. */ | |
3196 | ||
3197 | /* At first, find a place where disordered overlays should be linked | |
3198 | in. It is where an overlay which end before POS exists. (i.e. an | |
3199 | overlay whose ending marker is after-insertion-marker if disorder | |
3200 | exists). */ | |
3201 | while (!NILP (*tailp) | |
7539e11f | 3202 | && ((end = OVERLAY_POSITION (OVERLAY_END (XCAR (*tailp)))) |
3b06f880 | 3203 | >= pos)) |
7539e11f | 3204 | tailp = &XCDR (*tailp); |
3b06f880 KH |
3205 | |
3206 | /* If we don't find such an overlay, | |
3207 | or the found one ends before PREV, | |
3208 | or the found one is the last one in the list, | |
3209 | we don't have to fix anything. */ | |
3210 | if (NILP (*tailp) | |
3211 | || end < prev | |
7539e11f | 3212 | || NILP (XCDR (*tailp))) |
3b06f880 KH |
3213 | return; |
3214 | ||
3215 | right_place = tailp; | |
7539e11f | 3216 | tailp = &XCDR (*tailp); |
3b06f880 KH |
3217 | |
3218 | /* Now, end position of overlays in the list *TAILP should be before | |
3219 | or equal to PREV. In the loop, an overlay which ends at POS is | |
3220 | moved ahead to the place pointed by RIGHT_PLACE. If we found an | |
3221 | overlay which ends before PREV, the remaining overlays are in | |
3222 | correct order. */ | |
3223 | while (!NILP (*tailp)) | |
3224 | { | |
7539e11f | 3225 | end = OVERLAY_POSITION (OVERLAY_END (XCAR (*tailp))); |
3b06f880 KH |
3226 | |
3227 | if (end == pos) | |
3228 | { /* This overlay is disordered. */ | |
3229 | Lisp_Object found = *tailp; | |
3230 | ||
3231 | /* Unlink the found overlay. */ | |
7539e11f | 3232 | *tailp = XCDR (found); |
3b06f880 | 3233 | /* Move an overlay at RIGHT_PLACE to the next of the found one. */ |
7539e11f | 3234 | XCDR (found) = *right_place; |
3b06f880 KH |
3235 | /* Link it into the right place. */ |
3236 | *right_place = found; | |
3237 | } | |
3238 | else if (end == prev) | |
7539e11f | 3239 | tailp = &XCDR (*tailp); |
3b06f880 KH |
3240 | else /* No more disordered overlay. */ |
3241 | break; | |
3242 | } | |
3243 | } | |
2eec3b4e | 3244 | \f |
52f8ec73 JB |
3245 | DEFUN ("overlayp", Foverlayp, Soverlayp, 1, 1, 0, |
3246 | "Return t if OBJECT is an overlay.") | |
3247 | (object) | |
3248 | Lisp_Object object; | |
3249 | { | |
3250 | return (OVERLAYP (object) ? Qt : Qnil); | |
3251 | } | |
3252 | ||
acac2700 | 3253 | DEFUN ("make-overlay", Fmake_overlay, Smake_overlay, 2, 5, 0, |
5c4f68f1 JB |
3254 | "Create a new overlay with range BEG to END in BUFFER.\n\ |
3255 | If omitted, BUFFER defaults to the current buffer.\n\ | |
acac2700 RS |
3256 | BEG and END may be integers or markers.\n\ |
3257 | The fourth arg FRONT-ADVANCE, if non-nil, makes the\n\ | |
3258 | front delimiter advance when text is inserted there.\n\ | |
3259 | The fifth arg REAR-ADVANCE, if non-nil, makes the\n\ | |
3260 | rear delimiter advance when text is inserted there.") | |
3261 | (beg, end, buffer, front_advance, rear_advance) | |
5c4f68f1 | 3262 | Lisp_Object beg, end, buffer; |
acac2700 | 3263 | Lisp_Object front_advance, rear_advance; |
2eec3b4e RS |
3264 | { |
3265 | Lisp_Object overlay; | |
5c4f68f1 | 3266 | struct buffer *b; |
2eec3b4e | 3267 | |
5c4f68f1 | 3268 | if (NILP (buffer)) |
67180c6a | 3269 | XSETBUFFER (buffer, current_buffer); |
883047b9 JB |
3270 | else |
3271 | CHECK_BUFFER (buffer, 2); | |
3272 | if (MARKERP (beg) | |
3273 | && ! EQ (Fmarker_buffer (beg), buffer)) | |
3274 | error ("Marker points into wrong buffer"); | |
3275 | if (MARKERP (end) | |
3276 | && ! EQ (Fmarker_buffer (end), buffer)) | |
3277 | error ("Marker points into wrong buffer"); | |
2eec3b4e | 3278 | |
883047b9 JB |
3279 | CHECK_NUMBER_COERCE_MARKER (beg, 1); |
3280 | CHECK_NUMBER_COERCE_MARKER (end, 1); | |
5c4f68f1 | 3281 | |
883047b9 | 3282 | if (XINT (beg) > XINT (end)) |
5c4f68f1 | 3283 | { |
c99fc30f KH |
3284 | Lisp_Object temp; |
3285 | temp = beg; beg = end; end = temp; | |
5c4f68f1 | 3286 | } |
883047b9 JB |
3287 | |
3288 | b = XBUFFER (buffer); | |
3289 | ||
3290 | beg = Fset_marker (Fmake_marker (), beg, buffer); | |
3291 | end = Fset_marker (Fmake_marker (), end, buffer); | |
5c4f68f1 | 3292 | |
acac2700 RS |
3293 | if (!NILP (front_advance)) |
3294 | XMARKER (beg)->insertion_type = 1; | |
3295 | if (!NILP (rear_advance)) | |
3296 | XMARKER (end)->insertion_type = 1; | |
597dd755 | 3297 | |
48e2e3ba | 3298 | overlay = allocate_misc (); |
89ca3e1b | 3299 | XMISCTYPE (overlay) = Lisp_Misc_Overlay; |
48e2e3ba KH |
3300 | XOVERLAY (overlay)->start = beg; |
3301 | XOVERLAY (overlay)->end = end; | |
3302 | XOVERLAY (overlay)->plist = Qnil; | |
2eec3b4e RS |
3303 | |
3304 | /* Put the new overlay on the wrong list. */ | |
3305 | end = OVERLAY_END (overlay); | |
5c4f68f1 JB |
3306 | if (OVERLAY_POSITION (end) < XINT (b->overlay_center)) |
3307 | b->overlays_after = Fcons (overlay, b->overlays_after); | |
2eec3b4e | 3308 | else |
5c4f68f1 | 3309 | b->overlays_before = Fcons (overlay, b->overlays_before); |
2eec3b4e RS |
3310 | |
3311 | /* This puts it in the right list, and in the right order. */ | |
5c4f68f1 | 3312 | recenter_overlay_lists (b, XINT (b->overlay_center)); |
2eec3b4e | 3313 | |
b61982dd JB |
3314 | /* We don't need to redisplay the region covered by the overlay, because |
3315 | the overlay has no properties at the moment. */ | |
3316 | ||
2eec3b4e RS |
3317 | return overlay; |
3318 | } | |
876aa27c RS |
3319 | \f |
3320 | /* Mark a section of BUF as needing redisplay because of overlays changes. */ | |
3321 | ||
3322 | static void | |
3323 | modify_overlay (buf, start, end) | |
3324 | struct buffer *buf; | |
3325 | int start, end; | |
3326 | { | |
3327 | if (start == end) | |
3328 | return; | |
3329 | ||
3330 | if (start > end) | |
3331 | { | |
3332 | int temp = start; | |
3333 | start = end; end = temp; | |
3334 | } | |
3335 | ||
481b5054 GM |
3336 | BUF_COMPUTE_UNCHANGED (buf, start, end); |
3337 | ||
876aa27c RS |
3338 | /* If this is a buffer not in the selected window, |
3339 | we must do other windows. */ | |
3340 | if (buf != XBUFFER (XWINDOW (selected_window)->buffer)) | |
3341 | windows_or_buffers_changed = 1; | |
876aa27c RS |
3342 | /* If multiple windows show this buffer, we must do other windows. */ |
3343 | else if (buffer_shared > 1) | |
3344 | windows_or_buffers_changed = 1; | |
876aa27c | 3345 | |
d8b9150f | 3346 | ++BUF_OVERLAY_MODIFF (buf); |
876aa27c | 3347 | } |
2eec3b4e | 3348 | |
876aa27c | 3349 | \f\f |
2e34157c RS |
3350 | Lisp_Object Fdelete_overlay (); |
3351 | ||
5c4f68f1 JB |
3352 | DEFUN ("move-overlay", Fmove_overlay, Smove_overlay, 3, 4, 0, |
3353 | "Set the endpoints of OVERLAY to BEG and END in BUFFER.\n\ | |
3ece337a JB |
3354 | If BUFFER is omitted, leave OVERLAY in the same buffer it inhabits now.\n\ |
3355 | If BUFFER is omitted, and OVERLAY is in no buffer, put it in the current\n\ | |
3356 | buffer.") | |
5c4f68f1 JB |
3357 | (overlay, beg, end, buffer) |
3358 | Lisp_Object overlay, beg, end, buffer; | |
2eec3b4e | 3359 | { |
0a4469c9 RS |
3360 | struct buffer *b, *ob; |
3361 | Lisp_Object obuffer; | |
3362 | int count = specpdl_ptr - specpdl; | |
5c4f68f1 | 3363 | |
52f8ec73 | 3364 | CHECK_OVERLAY (overlay, 0); |
5c4f68f1 JB |
3365 | if (NILP (buffer)) |
3366 | buffer = Fmarker_buffer (OVERLAY_START (overlay)); | |
3ece337a | 3367 | if (NILP (buffer)) |
67180c6a | 3368 | XSETBUFFER (buffer, current_buffer); |
5c4f68f1 | 3369 | CHECK_BUFFER (buffer, 3); |
883047b9 JB |
3370 | |
3371 | if (MARKERP (beg) | |
3372 | && ! EQ (Fmarker_buffer (beg), buffer)) | |
3373 | error ("Marker points into wrong buffer"); | |
3374 | if (MARKERP (end) | |
3375 | && ! EQ (Fmarker_buffer (end), buffer)) | |
3376 | error ("Marker points into wrong buffer"); | |
3377 | ||
b61982dd JB |
3378 | CHECK_NUMBER_COERCE_MARKER (beg, 1); |
3379 | CHECK_NUMBER_COERCE_MARKER (end, 1); | |
3380 | ||
9d7608b7 KH |
3381 | if (XINT (beg) == XINT (end) && ! NILP (Foverlay_get (overlay, Qevaporate))) |
3382 | return Fdelete_overlay (overlay); | |
0a4469c9 | 3383 | |
b61982dd JB |
3384 | if (XINT (beg) > XINT (end)) |
3385 | { | |
c99fc30f KH |
3386 | Lisp_Object temp; |
3387 | temp = beg; beg = end; end = temp; | |
b61982dd JB |
3388 | } |
3389 | ||
9d7608b7 KH |
3390 | specbind (Qinhibit_quit, Qt); |
3391 | ||
0a4469c9 | 3392 | obuffer = Fmarker_buffer (OVERLAY_START (overlay)); |
5c4f68f1 | 3393 | b = XBUFFER (buffer); |
8801a864 | 3394 | ob = BUFFERP (obuffer) ? XBUFFER (obuffer) : (struct buffer *) 0; |
2eec3b4e | 3395 | |
c82ed728 | 3396 | /* If the overlay has changed buffers, do a thorough redisplay. */ |
0a4469c9 | 3397 | if (!EQ (buffer, obuffer)) |
50760c4a RS |
3398 | { |
3399 | /* Redisplay where the overlay was. */ | |
3400 | if (!NILP (obuffer)) | |
3401 | { | |
2e34157c RS |
3402 | int o_beg; |
3403 | int o_end; | |
50760c4a | 3404 | |
80509f2f RS |
3405 | o_beg = OVERLAY_POSITION (OVERLAY_START (overlay)); |
3406 | o_end = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
50760c4a | 3407 | |
2e34157c | 3408 | modify_overlay (ob, o_beg, o_end); |
50760c4a RS |
3409 | } |
3410 | ||
3411 | /* Redisplay where the overlay is going to be. */ | |
876aa27c | 3412 | modify_overlay (b, XINT (beg), XINT (end)); |
50760c4a | 3413 | } |
c82ed728 JB |
3414 | else |
3415 | /* Redisplay the area the overlay has just left, or just enclosed. */ | |
3416 | { | |
2e34157c | 3417 | int o_beg, o_end; |
c82ed728 | 3418 | |
80509f2f RS |
3419 | o_beg = OVERLAY_POSITION (OVERLAY_START (overlay)); |
3420 | o_end = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
c82ed728 | 3421 | |
2e34157c RS |
3422 | if (o_beg == XINT (beg)) |
3423 | modify_overlay (b, o_end, XINT (end)); | |
3424 | else if (o_end == XINT (end)) | |
3425 | modify_overlay (b, o_beg, XINT (beg)); | |
c82ed728 JB |
3426 | else |
3427 | { | |
2e34157c RS |
3428 | if (XINT (beg) < o_beg) o_beg = XINT (beg); |
3429 | if (XINT (end) > o_end) o_end = XINT (end); | |
3430 | modify_overlay (b, o_beg, o_end); | |
c82ed728 JB |
3431 | } |
3432 | } | |
b61982dd | 3433 | |
0a4469c9 RS |
3434 | if (!NILP (obuffer)) |
3435 | { | |
3436 | ob->overlays_before = Fdelq (overlay, ob->overlays_before); | |
3437 | ob->overlays_after = Fdelq (overlay, ob->overlays_after); | |
3438 | } | |
5c4f68f1 JB |
3439 | |
3440 | Fset_marker (OVERLAY_START (overlay), beg, buffer); | |
3441 | Fset_marker (OVERLAY_END (overlay), end, buffer); | |
2eec3b4e RS |
3442 | |
3443 | /* Put the overlay on the wrong list. */ | |
3444 | end = OVERLAY_END (overlay); | |
5c4f68f1 JB |
3445 | if (OVERLAY_POSITION (end) < XINT (b->overlay_center)) |
3446 | b->overlays_after = Fcons (overlay, b->overlays_after); | |
2eec3b4e | 3447 | else |
5c4f68f1 | 3448 | b->overlays_before = Fcons (overlay, b->overlays_before); |
2eec3b4e RS |
3449 | |
3450 | /* This puts it in the right list, and in the right order. */ | |
5c4f68f1 | 3451 | recenter_overlay_lists (b, XINT (b->overlay_center)); |
2eec3b4e | 3452 | |
0a4469c9 | 3453 | return unbind_to (count, overlay); |
2eec3b4e RS |
3454 | } |
3455 | ||
3456 | DEFUN ("delete-overlay", Fdelete_overlay, Sdelete_overlay, 1, 1, 0, | |
5c4f68f1 | 3457 | "Delete the overlay OVERLAY from its buffer.") |
2eec3b4e | 3458 | (overlay) |
5c4f68f1 | 3459 | Lisp_Object overlay; |
2eec3b4e | 3460 | { |
0a4469c9 | 3461 | Lisp_Object buffer; |
5c4f68f1 | 3462 | struct buffer *b; |
0a4469c9 | 3463 | int count = specpdl_ptr - specpdl; |
5c4f68f1 | 3464 | |
52f8ec73 JB |
3465 | CHECK_OVERLAY (overlay, 0); |
3466 | ||
0a4469c9 RS |
3467 | buffer = Fmarker_buffer (OVERLAY_START (overlay)); |
3468 | if (NILP (buffer)) | |
3469 | return Qnil; | |
3470 | ||
3471 | b = XBUFFER (buffer); | |
3472 | ||
3473 | specbind (Qinhibit_quit, Qt); | |
5c4f68f1 JB |
3474 | |
3475 | b->overlays_before = Fdelq (overlay, b->overlays_before); | |
3476 | b->overlays_after = Fdelq (overlay, b->overlays_after); | |
3477 | ||
876aa27c | 3478 | modify_overlay (b, |
8231a9aa RS |
3479 | marker_position (OVERLAY_START (overlay)), |
3480 | marker_position (OVERLAY_END (overlay))); | |
b61982dd | 3481 | |
3ece337a JB |
3482 | Fset_marker (OVERLAY_START (overlay), Qnil, Qnil); |
3483 | Fset_marker (OVERLAY_END (overlay), Qnil, Qnil); | |
3484 | ||
0a4469c9 | 3485 | return unbind_to (count, Qnil); |
2eec3b4e RS |
3486 | } |
3487 | \f | |
8ebafa8d JB |
3488 | /* Overlay dissection functions. */ |
3489 | ||
3490 | DEFUN ("overlay-start", Foverlay_start, Soverlay_start, 1, 1, 0, | |
3491 | "Return the position at which OVERLAY starts.") | |
3492 | (overlay) | |
3493 | Lisp_Object overlay; | |
3494 | { | |
3495 | CHECK_OVERLAY (overlay, 0); | |
3496 | ||
3497 | return (Fmarker_position (OVERLAY_START (overlay))); | |
3498 | } | |
3499 | ||
3500 | DEFUN ("overlay-end", Foverlay_end, Soverlay_end, 1, 1, 0, | |
3501 | "Return the position at which OVERLAY ends.") | |
3502 | (overlay) | |
3503 | Lisp_Object overlay; | |
3504 | { | |
3505 | CHECK_OVERLAY (overlay, 0); | |
3506 | ||
3507 | return (Fmarker_position (OVERLAY_END (overlay))); | |
3508 | } | |
3509 | ||
3510 | DEFUN ("overlay-buffer", Foverlay_buffer, Soverlay_buffer, 1, 1, 0, | |
3511 | "Return the buffer OVERLAY belongs to.") | |
3512 | (overlay) | |
3513 | Lisp_Object overlay; | |
3514 | { | |
3515 | CHECK_OVERLAY (overlay, 0); | |
3516 | ||
3517 | return Fmarker_buffer (OVERLAY_START (overlay)); | |
3518 | } | |
3519 | ||
3520 | DEFUN ("overlay-properties", Foverlay_properties, Soverlay_properties, 1, 1, 0, | |
3521 | "Return a list of the properties on OVERLAY.\n\ | |
3522 | This is a copy of OVERLAY's plist; modifying its conses has no effect on\n\ | |
3523 | OVERLAY.") | |
3524 | (overlay) | |
3525 | Lisp_Object overlay; | |
3526 | { | |
3527 | CHECK_OVERLAY (overlay, 0); | |
3528 | ||
48e2e3ba | 3529 | return Fcopy_sequence (XOVERLAY (overlay)->plist); |
8ebafa8d JB |
3530 | } |
3531 | ||
3532 | \f | |
2eec3b4e | 3533 | DEFUN ("overlays-at", Foverlays_at, Soverlays_at, 1, 1, 0, |
eb8c3be9 | 3534 | "Return a list of the overlays that contain position POS.") |
2eec3b4e RS |
3535 | (pos) |
3536 | Lisp_Object pos; | |
3537 | { | |
3538 | int noverlays; | |
2eec3b4e RS |
3539 | Lisp_Object *overlay_vec; |
3540 | int len; | |
3541 | Lisp_Object result; | |
3542 | ||
3543 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
3544 | ||
3545 | len = 10; | |
a9800ae8 | 3546 | /* We can't use alloca here because overlays_at can call xrealloc. */ |
2eec3b4e RS |
3547 | overlay_vec = (Lisp_Object *) xmalloc (len * sizeof (Lisp_Object)); |
3548 | ||
3549 | /* Put all the overlays we want in a vector in overlay_vec. | |
3550 | Store the length in len. */ | |
2a77a7d7 | 3551 | noverlays = overlays_at (XINT (pos), 1, &overlay_vec, &len, |
ac869cf7 | 3552 | (int *) 0, (int *) 0, 0); |
2eec3b4e RS |
3553 | |
3554 | /* Make a list of them all. */ | |
3555 | result = Flist (noverlays, overlay_vec); | |
3556 | ||
9ac0d9e0 | 3557 | xfree (overlay_vec); |
2eec3b4e RS |
3558 | return result; |
3559 | } | |
3560 | ||
74514898 | 3561 | DEFUN ("overlays-in", Foverlays_in, Soverlays_in, 2, 2, 0, |
2a3eeee7 RS |
3562 | "Return a list of the overlays that overlap the region BEG ... END.\n\ |
3563 | Overlap means that at least one character is contained within the overlay\n\ | |
3564 | and also contained within the specified region.\n\ | |
3565 | Empty overlays are included in the result if they are located at BEG\n\ | |
3566 | or between BEG and END.") | |
74514898 RS |
3567 | (beg, end) |
3568 | Lisp_Object beg, end; | |
3569 | { | |
3570 | int noverlays; | |
3571 | Lisp_Object *overlay_vec; | |
3572 | int len; | |
3573 | Lisp_Object result; | |
3574 | ||
3575 | CHECK_NUMBER_COERCE_MARKER (beg, 0); | |
3576 | CHECK_NUMBER_COERCE_MARKER (end, 0); | |
3577 | ||
3578 | len = 10; | |
3579 | overlay_vec = (Lisp_Object *) xmalloc (len * sizeof (Lisp_Object)); | |
3580 | ||
3581 | /* Put all the overlays we want in a vector in overlay_vec. | |
3582 | Store the length in len. */ | |
3583 | noverlays = overlays_in (XINT (beg), XINT (end), 1, &overlay_vec, &len, | |
3584 | (int *) 0, (int *) 0); | |
3585 | ||
3586 | /* Make a list of them all. */ | |
3587 | result = Flist (noverlays, overlay_vec); | |
3588 | ||
3589 | xfree (overlay_vec); | |
3590 | return result; | |
3591 | } | |
3592 | ||
2eec3b4e RS |
3593 | DEFUN ("next-overlay-change", Fnext_overlay_change, Snext_overlay_change, |
3594 | 1, 1, 0, | |
bbe20e81 KH |
3595 | "Return the next position after POS where an overlay starts or ends.\n\ |
3596 | If there are no more overlay boundaries after POS, return (point-max).") | |
2eec3b4e RS |
3597 | (pos) |
3598 | Lisp_Object pos; | |
3599 | { | |
3600 | int noverlays; | |
3601 | int endpos; | |
3602 | Lisp_Object *overlay_vec; | |
3603 | int len; | |
2eec3b4e RS |
3604 | int i; |
3605 | ||
3606 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
3607 | ||
3608 | len = 10; | |
3609 | overlay_vec = (Lisp_Object *) xmalloc (len * sizeof (Lisp_Object)); | |
3610 | ||
3611 | /* Put all the overlays we want in a vector in overlay_vec. | |
3612 | Store the length in len. | |
3613 | endpos gets the position where the next overlay starts. */ | |
2a77a7d7 | 3614 | noverlays = overlays_at (XINT (pos), 1, &overlay_vec, &len, |
ac869cf7 | 3615 | &endpos, (int *) 0, 1); |
2eec3b4e RS |
3616 | |
3617 | /* If any of these overlays ends before endpos, | |
3618 | use its ending point instead. */ | |
3619 | for (i = 0; i < noverlays; i++) | |
3620 | { | |
3621 | Lisp_Object oend; | |
3622 | int oendpos; | |
3623 | ||
3624 | oend = OVERLAY_END (overlay_vec[i]); | |
3625 | oendpos = OVERLAY_POSITION (oend); | |
3626 | if (oendpos < endpos) | |
3627 | endpos = oendpos; | |
1ab256cb RM |
3628 | } |
3629 | ||
9ac0d9e0 | 3630 | xfree (overlay_vec); |
2eec3b4e RS |
3631 | return make_number (endpos); |
3632 | } | |
239c932b RS |
3633 | |
3634 | DEFUN ("previous-overlay-change", Fprevious_overlay_change, | |
3635 | Sprevious_overlay_change, 1, 1, 0, | |
3636 | "Return the previous position before POS where an overlay starts or ends.\n\ | |
624bbdc4 | 3637 | If there are no more overlay boundaries before POS, return (point-min).") |
239c932b RS |
3638 | (pos) |
3639 | Lisp_Object pos; | |
3640 | { | |
3641 | int noverlays; | |
3642 | int prevpos; | |
3643 | Lisp_Object *overlay_vec; | |
3644 | int len; | |
239c932b RS |
3645 | |
3646 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
3647 | ||
624bbdc4 RS |
3648 | /* At beginning of buffer, we know the answer; |
3649 | avoid bug subtracting 1 below. */ | |
3650 | if (XINT (pos) == BEGV) | |
3651 | return pos; | |
3652 | ||
017f0539 GM |
3653 | len = 10; |
3654 | overlay_vec = (Lisp_Object *) xmalloc (len * sizeof (Lisp_Object)); | |
3655 | ||
239c932b RS |
3656 | /* Put all the overlays we want in a vector in overlay_vec. |
3657 | Store the length in len. | |
daa1c109 | 3658 | prevpos gets the position of the previous change. */ |
2a77a7d7 | 3659 | noverlays = overlays_at (XINT (pos), 1, &overlay_vec, &len, |
ac869cf7 | 3660 | (int *) 0, &prevpos, 1); |
239c932b | 3661 | |
239c932b RS |
3662 | xfree (overlay_vec); |
3663 | return make_number (prevpos); | |
3664 | } | |
2eec3b4e RS |
3665 | \f |
3666 | /* These functions are for debugging overlays. */ | |
3667 | ||
3668 | DEFUN ("overlay-lists", Foverlay_lists, Soverlay_lists, 0, 0, 0, | |
3669 | "Return a pair of lists giving all the overlays of the current buffer.\n\ | |
3670 | The car has all the overlays before the overlay center;\n\ | |
bbe20e81 | 3671 | the cdr has all the overlays after the overlay center.\n\ |
2eec3b4e RS |
3672 | Recentering overlays moves overlays between these lists.\n\ |
3673 | The lists you get are copies, so that changing them has no effect.\n\ | |
3674 | However, the overlays you get are the real objects that the buffer uses.") | |
3675 | () | |
3676 | { | |
3677 | Lisp_Object before, after; | |
3678 | before = current_buffer->overlays_before; | |
3679 | if (CONSP (before)) | |
3680 | before = Fcopy_sequence (before); | |
3681 | after = current_buffer->overlays_after; | |
3682 | if (CONSP (after)) | |
3683 | after = Fcopy_sequence (after); | |
3684 | ||
3685 | return Fcons (before, after); | |
3686 | } | |
3687 | ||
3688 | DEFUN ("overlay-recenter", Foverlay_recenter, Soverlay_recenter, 1, 1, 0, | |
3689 | "Recenter the overlays of the current buffer around position POS.") | |
3690 | (pos) | |
3691 | Lisp_Object pos; | |
3692 | { | |
3693 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
3694 | ||
5c4f68f1 | 3695 | recenter_overlay_lists (current_buffer, XINT (pos)); |
2eec3b4e RS |
3696 | return Qnil; |
3697 | } | |
3698 | \f | |
3699 | DEFUN ("overlay-get", Foverlay_get, Soverlay_get, 2, 2, 0, | |
a2428fa2 | 3700 | "Get the property of overlay OVERLAY with property name PROP.") |
2eec3b4e RS |
3701 | (overlay, prop) |
3702 | Lisp_Object overlay, prop; | |
3703 | { | |
cab4777e | 3704 | Lisp_Object plist, fallback; |
52f8ec73 JB |
3705 | |
3706 | CHECK_OVERLAY (overlay, 0); | |
3707 | ||
cab4777e RS |
3708 | fallback = Qnil; |
3709 | ||
48e2e3ba | 3710 | for (plist = XOVERLAY (overlay)->plist; |
7539e11f KR |
3711 | CONSP (plist) && CONSP (XCDR (plist)); |
3712 | plist = XCDR (XCDR (plist))) | |
2eec3b4e | 3713 | { |
7539e11f KR |
3714 | if (EQ (XCAR (plist), prop)) |
3715 | return XCAR (XCDR (plist)); | |
3716 | else if (EQ (XCAR (plist), Qcategory)) | |
cab4777e RS |
3717 | { |
3718 | Lisp_Object tem; | |
3719 | tem = Fcar (Fcdr (plist)); | |
3720 | if (SYMBOLP (tem)) | |
3721 | fallback = Fget (tem, prop); | |
3722 | } | |
2eec3b4e | 3723 | } |
52f8ec73 | 3724 | |
cab4777e | 3725 | return fallback; |
2eec3b4e RS |
3726 | } |
3727 | ||
3728 | DEFUN ("overlay-put", Foverlay_put, Soverlay_put, 3, 3, 0, | |
3729 | "Set one property of overlay OVERLAY: give property PROP value VALUE.") | |
3730 | (overlay, prop, value) | |
3731 | Lisp_Object overlay, prop, value; | |
3732 | { | |
48e2e3ba | 3733 | Lisp_Object tail, buffer; |
9d7608b7 | 3734 | int changed; |
2eec3b4e | 3735 | |
52f8ec73 | 3736 | CHECK_OVERLAY (overlay, 0); |
b61982dd | 3737 | |
274a9425 RS |
3738 | buffer = Fmarker_buffer (OVERLAY_START (overlay)); |
3739 | ||
48e2e3ba | 3740 | for (tail = XOVERLAY (overlay)->plist; |
7539e11f KR |
3741 | CONSP (tail) && CONSP (XCDR (tail)); |
3742 | tail = XCDR (XCDR (tail))) | |
3743 | if (EQ (XCAR (tail), prop)) | |
274a9425 | 3744 | { |
7539e11f KR |
3745 | changed = !EQ (XCAR (XCDR (tail)), value); |
3746 | XCAR (XCDR (tail)) = value; | |
9d7608b7 | 3747 | goto found; |
274a9425 | 3748 | } |
9d7608b7 KH |
3749 | /* It wasn't in the list, so add it to the front. */ |
3750 | changed = !NILP (value); | |
48e2e3ba KH |
3751 | XOVERLAY (overlay)->plist |
3752 | = Fcons (prop, Fcons (value, XOVERLAY (overlay)->plist)); | |
9d7608b7 KH |
3753 | found: |
3754 | if (! NILP (buffer)) | |
3755 | { | |
3756 | if (changed) | |
876aa27c | 3757 | modify_overlay (XBUFFER (buffer), |
9d7608b7 KH |
3758 | marker_position (OVERLAY_START (overlay)), |
3759 | marker_position (OVERLAY_END (overlay))); | |
3760 | if (EQ (prop, Qevaporate) && ! NILP (value) | |
3761 | && (OVERLAY_POSITION (OVERLAY_START (overlay)) | |
3762 | == OVERLAY_POSITION (OVERLAY_END (overlay)))) | |
3763 | Fdelete_overlay (overlay); | |
3764 | } | |
2eec3b4e | 3765 | return value; |
1ab256cb RM |
3766 | } |
3767 | \f | |
9115729e KH |
3768 | /* Subroutine of report_overlay_modification. */ |
3769 | ||
3770 | /* Lisp vector holding overlay hook functions to call. | |
3771 | Vector elements come in pairs. | |
3772 | Each even-index element is a list of hook functions. | |
3773 | The following odd-index element is the overlay they came from. | |
3774 | ||
3775 | Before the buffer change, we fill in this vector | |
3776 | as we call overlay hook functions. | |
3777 | After the buffer change, we get the functions to call from this vector. | |
3778 | This way we always call the same functions before and after the change. */ | |
3779 | static Lisp_Object last_overlay_modification_hooks; | |
3780 | ||
3781 | /* Number of elements actually used in last_overlay_modification_hooks. */ | |
3782 | static int last_overlay_modification_hooks_used; | |
3783 | ||
3784 | /* Add one functionlist/overlay pair | |
3785 | to the end of last_overlay_modification_hooks. */ | |
3786 | ||
3787 | static void | |
3788 | add_overlay_mod_hooklist (functionlist, overlay) | |
3789 | Lisp_Object functionlist, overlay; | |
3790 | { | |
3791 | int oldsize = XVECTOR (last_overlay_modification_hooks)->size; | |
3792 | ||
3793 | if (last_overlay_modification_hooks_used == oldsize) | |
3794 | { | |
3795 | Lisp_Object old; | |
3796 | old = last_overlay_modification_hooks; | |
3797 | last_overlay_modification_hooks | |
3798 | = Fmake_vector (make_number (oldsize * 2), Qnil); | |
0b1f1b09 RS |
3799 | bcopy (XVECTOR (old)->contents, |
3800 | XVECTOR (last_overlay_modification_hooks)->contents, | |
9115729e KH |
3801 | sizeof (Lisp_Object) * oldsize); |
3802 | } | |
3803 | XVECTOR (last_overlay_modification_hooks)->contents[last_overlay_modification_hooks_used++] = functionlist; | |
3804 | XVECTOR (last_overlay_modification_hooks)->contents[last_overlay_modification_hooks_used++] = overlay; | |
3805 | } | |
3806 | \f | |
173f2a64 RS |
3807 | /* Run the modification-hooks of overlays that include |
3808 | any part of the text in START to END. | |
9115729e KH |
3809 | If this change is an insertion, also |
3810 | run the insert-before-hooks of overlay starting at END, | |
930a9140 RS |
3811 | and the insert-after-hooks of overlay ending at START. |
3812 | ||
3813 | This is called both before and after the modification. | |
3814 | AFTER is nonzero when we call after the modification. | |
3815 | ||
9115729e KH |
3816 | ARG1, ARG2, ARG3 are arguments to pass to the hook functions. |
3817 | When AFTER is nonzero, they are the start position, | |
3818 | the position after the inserted new text, | |
3819 | and the length of deleted or replaced old text. */ | |
173f2a64 RS |
3820 | |
3821 | void | |
930a9140 | 3822 | report_overlay_modification (start, end, after, arg1, arg2, arg3) |
173f2a64 | 3823 | Lisp_Object start, end; |
930a9140 RS |
3824 | int after; |
3825 | Lisp_Object arg1, arg2, arg3; | |
173f2a64 RS |
3826 | { |
3827 | Lisp_Object prop, overlay, tail; | |
9115729e KH |
3828 | /* 1 if this change is an insertion. */ |
3829 | int insertion = (after ? XFASTINT (arg3) == 0 : EQ (start, end)); | |
55b48893 | 3830 | int tail_copied; |
930a9140 | 3831 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
55b48893 RS |
3832 | |
3833 | overlay = Qnil; | |
3834 | tail = Qnil; | |
930a9140 | 3835 | GCPRO5 (overlay, tail, arg1, arg2, arg3); |
173f2a64 | 3836 | |
9115729e KH |
3837 | if (after) |
3838 | { | |
3839 | /* Call the functions recorded in last_overlay_modification_hooks | |
3840 | rather than scanning the overlays again. | |
3841 | First copy the vector contents, in case some of these hooks | |
3842 | do subsequent modification of the buffer. */ | |
3843 | int size = last_overlay_modification_hooks_used; | |
3844 | Lisp_Object *copy = (Lisp_Object *) alloca (size * sizeof (Lisp_Object)); | |
3845 | int i; | |
3846 | ||
3847 | bcopy (XVECTOR (last_overlay_modification_hooks)->contents, | |
3848 | copy, size * sizeof (Lisp_Object)); | |
3849 | gcpro1.var = copy; | |
3850 | gcpro1.nvars = size; | |
3851 | ||
3852 | for (i = 0; i < size;) | |
3853 | { | |
3854 | Lisp_Object prop, overlay; | |
3855 | prop = copy[i++]; | |
3856 | overlay = copy[i++]; | |
3857 | call_overlay_mod_hooks (prop, overlay, after, arg1, arg2, arg3); | |
3858 | } | |
3859 | UNGCPRO; | |
3860 | return; | |
3861 | } | |
3862 | ||
3863 | /* We are being called before a change. | |
3864 | Scan the overlays to find the functions to call. */ | |
3865 | last_overlay_modification_hooks_used = 0; | |
55b48893 | 3866 | tail_copied = 0; |
173f2a64 RS |
3867 | for (tail = current_buffer->overlays_before; |
3868 | CONSP (tail); | |
7539e11f | 3869 | tail = XCDR (tail)) |
173f2a64 RS |
3870 | { |
3871 | int startpos, endpos; | |
be8b1c6b | 3872 | Lisp_Object ostart, oend; |
173f2a64 | 3873 | |
7539e11f | 3874 | overlay = XCAR (tail); |
173f2a64 RS |
3875 | |
3876 | ostart = OVERLAY_START (overlay); | |
3877 | oend = OVERLAY_END (overlay); | |
3878 | endpos = OVERLAY_POSITION (oend); | |
3879 | if (XFASTINT (start) > endpos) | |
3880 | break; | |
3881 | startpos = OVERLAY_POSITION (ostart); | |
9115729e KH |
3882 | if (insertion && (XFASTINT (start) == startpos |
3883 | || XFASTINT (end) == startpos)) | |
173f2a64 RS |
3884 | { |
3885 | prop = Foverlay_get (overlay, Qinsert_in_front_hooks); | |
5fb5aa33 RS |
3886 | if (!NILP (prop)) |
3887 | { | |
3888 | /* Copy TAIL in case the hook recenters the overlay lists. */ | |
55b48893 RS |
3889 | if (!tail_copied) |
3890 | tail = Fcopy_sequence (tail); | |
3891 | tail_copied = 1; | |
930a9140 | 3892 | call_overlay_mod_hooks (prop, overlay, after, arg1, arg2, arg3); |
5fb5aa33 | 3893 | } |
173f2a64 | 3894 | } |
9115729e KH |
3895 | if (insertion && (XFASTINT (start) == endpos |
3896 | || XFASTINT (end) == endpos)) | |
173f2a64 RS |
3897 | { |
3898 | prop = Foverlay_get (overlay, Qinsert_behind_hooks); | |
5fb5aa33 RS |
3899 | if (!NILP (prop)) |
3900 | { | |
55b48893 RS |
3901 | if (!tail_copied) |
3902 | tail = Fcopy_sequence (tail); | |
3903 | tail_copied = 1; | |
930a9140 | 3904 | call_overlay_mod_hooks (prop, overlay, after, arg1, arg2, arg3); |
5fb5aa33 | 3905 | } |
173f2a64 | 3906 | } |
3bd13e92 KH |
3907 | /* Test for intersecting intervals. This does the right thing |
3908 | for both insertion and deletion. */ | |
3909 | if (XFASTINT (end) > startpos && XFASTINT (start) < endpos) | |
173f2a64 RS |
3910 | { |
3911 | prop = Foverlay_get (overlay, Qmodification_hooks); | |
5fb5aa33 RS |
3912 | if (!NILP (prop)) |
3913 | { | |
55b48893 RS |
3914 | if (!tail_copied) |
3915 | tail = Fcopy_sequence (tail); | |
3916 | tail_copied = 1; | |
930a9140 | 3917 | call_overlay_mod_hooks (prop, overlay, after, arg1, arg2, arg3); |
5fb5aa33 | 3918 | } |
173f2a64 RS |
3919 | } |
3920 | } | |
3921 | ||
55b48893 | 3922 | tail_copied = 0; |
173f2a64 RS |
3923 | for (tail = current_buffer->overlays_after; |
3924 | CONSP (tail); | |
7539e11f | 3925 | tail = XCDR (tail)) |
173f2a64 RS |
3926 | { |
3927 | int startpos, endpos; | |
be8b1c6b | 3928 | Lisp_Object ostart, oend; |
173f2a64 | 3929 | |
7539e11f | 3930 | overlay = XCAR (tail); |
173f2a64 RS |
3931 | |
3932 | ostart = OVERLAY_START (overlay); | |
3933 | oend = OVERLAY_END (overlay); | |
3934 | startpos = OVERLAY_POSITION (ostart); | |
cdf0b096 | 3935 | endpos = OVERLAY_POSITION (oend); |
173f2a64 RS |
3936 | if (XFASTINT (end) < startpos) |
3937 | break; | |
9115729e KH |
3938 | if (insertion && (XFASTINT (start) == startpos |
3939 | || XFASTINT (end) == startpos)) | |
173f2a64 RS |
3940 | { |
3941 | prop = Foverlay_get (overlay, Qinsert_in_front_hooks); | |
5fb5aa33 RS |
3942 | if (!NILP (prop)) |
3943 | { | |
55b48893 RS |
3944 | if (!tail_copied) |
3945 | tail = Fcopy_sequence (tail); | |
3946 | tail_copied = 1; | |
930a9140 | 3947 | call_overlay_mod_hooks (prop, overlay, after, arg1, arg2, arg3); |
5fb5aa33 | 3948 | } |
173f2a64 | 3949 | } |
9115729e KH |
3950 | if (insertion && (XFASTINT (start) == endpos |
3951 | || XFASTINT (end) == endpos)) | |
173f2a64 RS |
3952 | { |
3953 | prop = Foverlay_get (overlay, Qinsert_behind_hooks); | |
5fb5aa33 RS |
3954 | if (!NILP (prop)) |
3955 | { | |
55b48893 RS |
3956 | if (!tail_copied) |
3957 | tail = Fcopy_sequence (tail); | |
3958 | tail_copied = 1; | |
930a9140 | 3959 | call_overlay_mod_hooks (prop, overlay, after, arg1, arg2, arg3); |
5fb5aa33 | 3960 | } |
173f2a64 | 3961 | } |
3bd13e92 KH |
3962 | /* Test for intersecting intervals. This does the right thing |
3963 | for both insertion and deletion. */ | |
3964 | if (XFASTINT (end) > startpos && XFASTINT (start) < endpos) | |
173f2a64 RS |
3965 | { |
3966 | prop = Foverlay_get (overlay, Qmodification_hooks); | |
5fb5aa33 RS |
3967 | if (!NILP (prop)) |
3968 | { | |
55b48893 RS |
3969 | if (!tail_copied) |
3970 | tail = Fcopy_sequence (tail); | |
3971 | tail_copied = 1; | |
930a9140 | 3972 | call_overlay_mod_hooks (prop, overlay, after, arg1, arg2, arg3); |
5fb5aa33 | 3973 | } |
173f2a64 RS |
3974 | } |
3975 | } | |
55b48893 RS |
3976 | |
3977 | UNGCPRO; | |
173f2a64 RS |
3978 | } |
3979 | ||
3980 | static void | |
930a9140 RS |
3981 | call_overlay_mod_hooks (list, overlay, after, arg1, arg2, arg3) |
3982 | Lisp_Object list, overlay; | |
3983 | int after; | |
3984 | Lisp_Object arg1, arg2, arg3; | |
173f2a64 | 3985 | { |
930a9140 | 3986 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
9115729e | 3987 | |
930a9140 | 3988 | GCPRO4 (list, arg1, arg2, arg3); |
9115729e KH |
3989 | if (! after) |
3990 | add_overlay_mod_hooklist (list, overlay); | |
3991 | ||
173f2a64 RS |
3992 | while (!NILP (list)) |
3993 | { | |
930a9140 RS |
3994 | if (NILP (arg3)) |
3995 | call4 (Fcar (list), overlay, after ? Qt : Qnil, arg1, arg2); | |
3996 | else | |
3997 | call5 (Fcar (list), overlay, after ? Qt : Qnil, arg1, arg2, arg3); | |
173f2a64 RS |
3998 | list = Fcdr (list); |
3999 | } | |
4000 | UNGCPRO; | |
4001 | } | |
9d7608b7 KH |
4002 | |
4003 | /* Delete any zero-sized overlays at position POS, if the `evaporate' | |
4004 | property is set. */ | |
4005 | void | |
4006 | evaporate_overlays (pos) | |
4007 | int pos; | |
4008 | { | |
4009 | Lisp_Object tail, overlay, hit_list; | |
4010 | ||
4011 | hit_list = Qnil; | |
4012 | if (pos <= XFASTINT (current_buffer->overlay_center)) | |
4013 | for (tail = current_buffer->overlays_before; CONSP (tail); | |
7539e11f | 4014 | tail = XCDR (tail)) |
9d7608b7 KH |
4015 | { |
4016 | int endpos; | |
7539e11f | 4017 | overlay = XCAR (tail); |
9d7608b7 KH |
4018 | endpos = OVERLAY_POSITION (OVERLAY_END (overlay)); |
4019 | if (endpos < pos) | |
4020 | break; | |
4021 | if (endpos == pos && OVERLAY_POSITION (OVERLAY_START (overlay)) == pos | |
c3935f9d | 4022 | && ! NILP (Foverlay_get (overlay, Qevaporate))) |
9d7608b7 KH |
4023 | hit_list = Fcons (overlay, hit_list); |
4024 | } | |
4025 | else | |
4026 | for (tail = current_buffer->overlays_after; CONSP (tail); | |
7539e11f | 4027 | tail = XCDR (tail)) |
9d7608b7 KH |
4028 | { |
4029 | int startpos; | |
7539e11f | 4030 | overlay = XCAR (tail); |
9d7608b7 KH |
4031 | startpos = OVERLAY_POSITION (OVERLAY_START (overlay)); |
4032 | if (startpos > pos) | |
4033 | break; | |
4034 | if (startpos == pos && OVERLAY_POSITION (OVERLAY_END (overlay)) == pos | |
c3935f9d | 4035 | && ! NILP (Foverlay_get (overlay, Qevaporate))) |
9d7608b7 KH |
4036 | hit_list = Fcons (overlay, hit_list); |
4037 | } | |
7539e11f KR |
4038 | for (; CONSP (hit_list); hit_list = XCDR (hit_list)) |
4039 | Fdelete_overlay (XCAR (hit_list)); | |
9d7608b7 | 4040 | } |
173f2a64 | 4041 | \f |
54dfdeb0 | 4042 | /* Somebody has tried to store a value with an unacceptable type |
1bf08baf KH |
4043 | in the slot with offset OFFSET. */ |
4044 | ||
0fa3ba92 | 4045 | void |
54dfdeb0 KH |
4046 | buffer_slot_type_mismatch (offset) |
4047 | int offset; | |
0fa3ba92 | 4048 | { |
54dfdeb0 | 4049 | Lisp_Object sym; |
0fa3ba92 | 4050 | char *type_name; |
7c02e886 | 4051 | |
7313acd0 | 4052 | switch (XINT (PER_BUFFER_TYPE (offset))) |
0fa3ba92 | 4053 | { |
7c02e886 GM |
4054 | case Lisp_Int: |
4055 | type_name = "integers"; | |
4056 | break; | |
4057 | ||
4058 | case Lisp_String: | |
4059 | type_name = "strings"; | |
4060 | break; | |
4061 | ||
4062 | case Lisp_Symbol: | |
4063 | type_name = "symbols"; | |
4064 | break; | |
4065 | ||
0fa3ba92 JB |
4066 | default: |
4067 | abort (); | |
4068 | } | |
4069 | ||
7313acd0 | 4070 | sym = PER_BUFFER_SYMBOL (offset); |
1bf08baf | 4071 | error ("Only %s should be stored in the buffer-local variable %s", |
54dfdeb0 | 4072 | type_name, XSYMBOL (sym)->name->data); |
0fa3ba92 | 4073 | } |
7c02e886 | 4074 | |
0fa3ba92 | 4075 | \f |
b86af064 GM |
4076 | /*********************************************************************** |
4077 | Allocation with mmap | |
4078 | ***********************************************************************/ | |
4079 | ||
4080 | #ifdef USE_MMAP_FOR_BUFFERS | |
4081 | ||
4082 | #include <sys/types.h> | |
4083 | #include <sys/mman.h> | |
4084 | ||
4085 | #ifndef MAP_ANON | |
4086 | #ifdef MAP_ANONYMOUS | |
4087 | #define MAP_ANON MAP_ANONYMOUS | |
4088 | #else | |
4089 | #define MAP_ANON 0 | |
4090 | #endif | |
4091 | #endif | |
4092 | ||
09dfdf85 GM |
4093 | #ifndef MAP_FAILED |
4094 | #define MAP_FAILED ((void *) -1) | |
4095 | #endif | |
4096 | ||
b86af064 GM |
4097 | #include <stdio.h> |
4098 | #include <errno.h> | |
4099 | ||
4100 | #if MAP_ANON == 0 | |
4101 | #include <fcntl.h> | |
4102 | #endif | |
4103 | ||
4104 | #include "coding.h" | |
4105 | ||
4106 | ||
4107 | /* Memory is allocated in regions which are mapped using mmap(2). | |
4108 | The current implementation lets the system select mapped | |
4109 | addresses; we're not using MAP_FIXED in general, except when | |
4110 | trying to enlarge regions. | |
4111 | ||
4112 | Each mapped region starts with a mmap_region structure, the user | |
4113 | area starts after that structure, aligned to MEM_ALIGN. | |
4114 | ||
4115 | +-----------------------+ | |
4116 | | struct mmap_info + | | |
4117 | | padding | | |
4118 | +-----------------------+ | |
4119 | | user data | | |
4120 | | | | |
4121 | | | | |
4122 | +-----------------------+ */ | |
4123 | ||
4124 | struct mmap_region | |
4125 | { | |
4126 | /* User-specified size. */ | |
4127 | size_t nbytes_specified; | |
4128 | ||
4129 | /* Number of bytes mapped */ | |
4130 | size_t nbytes_mapped; | |
4131 | ||
4132 | /* Pointer to the location holding the address of the memory | |
4133 | allocated with the mmap'd block. The variable actually points | |
4134 | after this structure. */ | |
4135 | POINTER_TYPE **var; | |
4136 | ||
4137 | /* Next and previous in list of all mmap'd regions. */ | |
4138 | struct mmap_region *next, *prev; | |
4139 | }; | |
4140 | ||
4141 | /* Doubly-linked list of mmap'd regions. */ | |
4142 | ||
4143 | static struct mmap_region *mmap_regions; | |
4144 | ||
4145 | /* File descriptor for mmap. If we don't have anonymous mapping, | |
4146 | /dev/zero will be opened on it. */ | |
4147 | ||
4148 | static int mmap_fd; | |
4149 | ||
4150 | /* Temporary storage for mmap_set_vars, see there. */ | |
4151 | ||
4152 | static struct mmap_region *mmap_regions_1; | |
4153 | static int mmap_fd_1; | |
4154 | ||
4155 | /* Page size on this system. */ | |
4156 | ||
4157 | static int mmap_page_size; | |
4158 | ||
4159 | /* 1 means mmap has been intialized. */ | |
4160 | ||
4161 | static int mmap_initialized_p; | |
4162 | ||
4163 | /* Value is X rounded up to the next multiple of N. */ | |
4164 | ||
4165 | #define ROUND(X, N) (((X) + (N) - 1) / (N) * (N)) | |
4166 | ||
4167 | /* Size of mmap_region structure plus padding. */ | |
4168 | ||
4169 | #define MMAP_REGION_STRUCT_SIZE \ | |
4170 | ROUND (sizeof (struct mmap_region), MEM_ALIGN) | |
4171 | ||
4172 | /* Given a pointer P to the start of the user-visible part of a mapped | |
4173 | region, return a pointer to the start of the region. */ | |
4174 | ||
4175 | #define MMAP_REGION(P) \ | |
4176 | ((struct mmap_region *) ((char *) (P) - MMAP_REGION_STRUCT_SIZE)) | |
4177 | ||
4178 | /* Given a pointer P to the start of a mapped region, return a pointer | |
4179 | to the start of the user-visible part of the region. */ | |
4180 | ||
4181 | #define MMAP_USER_AREA(P) \ | |
4182 | ((POINTER_TYPE *) ((char *) (P) + MMAP_REGION_STRUCT_SIZE)) | |
4183 | ||
4184 | #define MEM_ALIGN sizeof (double) | |
4185 | ||
4186 | /* Function prototypes. */ | |
4187 | ||
4188 | static int mmap_free_1 P_ ((struct mmap_region *)); | |
4189 | static int mmap_enlarge P_ ((struct mmap_region *, int)); | |
4190 | static struct mmap_region *mmap_find P_ ((POINTER_TYPE *, POINTER_TYPE *)); | |
4191 | static POINTER_TYPE *mmap_alloc P_ ((POINTER_TYPE **, size_t)); | |
4192 | static POINTER_TYPE *mmap_realloc P_ ((POINTER_TYPE **, size_t)); | |
4193 | static void mmap_free P_ ((POINTER_TYPE **ptr)); | |
4194 | static void mmap_init P_ ((void)); | |
4195 | ||
4196 | ||
4197 | /* Return a region overlapping address range START...END, or null if | |
4198 | none. END is not including, i.e. the last byte in the range | |
4199 | is at END - 1. */ | |
4200 | ||
4201 | static struct mmap_region * | |
4202 | mmap_find (start, end) | |
4203 | POINTER_TYPE *start, *end; | |
4204 | { | |
4205 | struct mmap_region *r; | |
4206 | char *s = (char *) start, *e = (char *) end; | |
4207 | ||
4208 | for (r = mmap_regions; r; r = r->next) | |
4209 | { | |
4210 | char *rstart = (char *) r; | |
4211 | char *rend = rstart + r->nbytes_mapped; | |
4212 | ||
4213 | if (/* First byte of range, i.e. START, in this region? */ | |
4214 | (s >= rstart && s < rend) | |
4215 | /* Last byte of range, i.e. END - 1, in this region? */ | |
4216 | || (e > rstart && e <= rend) | |
4217 | /* First byte of this region in the range? */ | |
4218 | || (rstart >= s && rstart < e) | |
4219 | /* Last byte of this region in the range? */ | |
4220 | || (rend > s && rend <= e)) | |
4221 | break; | |
4222 | } | |
4223 | ||
4224 | return r; | |
4225 | } | |
4226 | ||
4227 | ||
4228 | /* Unmap a region. P is a pointer to the start of the user-araa of | |
4229 | the region. Value is non-zero if successful. */ | |
4230 | ||
4231 | static int | |
4232 | mmap_free_1 (r) | |
4233 | struct mmap_region *r; | |
4234 | { | |
4235 | if (r->next) | |
4236 | r->next->prev = r->prev; | |
4237 | if (r->prev) | |
4238 | r->prev->next = r->next; | |
4239 | else | |
4240 | mmap_regions = r->next; | |
4241 | ||
1a15cca0 | 4242 | if (munmap ((POINTER_TYPE *) r, r->nbytes_mapped) == -1) |
b86af064 GM |
4243 | { |
4244 | fprintf (stderr, "munmap: %s\n", emacs_strerror (errno)); | |
4245 | return 0; | |
4246 | } | |
4247 | ||
4248 | return 1; | |
4249 | } | |
4250 | ||
4251 | ||
4252 | /* Enlarge region R by NPAGES pages. NPAGES < 0 means shrink R. | |
4253 | Value is non-zero if successful. */ | |
4254 | ||
4255 | static int | |
4256 | mmap_enlarge (r, npages) | |
4257 | struct mmap_region *r; | |
4258 | int npages; | |
4259 | { | |
4260 | char *region_end = (char *) r + r->nbytes_mapped; | |
4261 | size_t nbytes; | |
4262 | int success = 0; | |
4263 | ||
4264 | if (npages < 0) | |
4265 | { | |
4266 | /* Unmap pages at the end of the region. */ | |
4267 | nbytes = - npages * mmap_page_size; | |
4268 | if (munmap (region_end - nbytes, nbytes) == -1) | |
4269 | fprintf (stderr, "munmap: %s\n", emacs_strerror (errno)); | |
4270 | else | |
4271 | { | |
4272 | r->nbytes_mapped -= nbytes; | |
4273 | success = 1; | |
4274 | } | |
4275 | } | |
4276 | else if (npages > 0) | |
4277 | { | |
4278 | struct mmap_region *r2; | |
4279 | ||
4280 | nbytes = npages * mmap_page_size; | |
4281 | ||
4282 | /* Try to map additional pages at the end of the region. We | |
4283 | cannot do this if the address range is already occupied by | |
4284 | something else because mmap deletes any previous mapping. | |
4285 | I'm not sure this is worth doing, let's see. */ | |
4286 | r2 = mmap_find (region_end, region_end + nbytes); | |
4287 | if (r2 == NULL) | |
4288 | { | |
4289 | POINTER_TYPE *p; | |
4290 | ||
4291 | p = mmap (region_end, nbytes, PROT_READ | PROT_WRITE, | |
4292 | MAP_ANON | MAP_PRIVATE | MAP_FIXED, mmap_fd, 0); | |
4293 | if (p == MAP_FAILED) | |
edaa9aed | 4294 | ; /* fprintf (stderr, "mmap: %s\n", emacs_strerror (errno)); */ |
b86af064 GM |
4295 | else if (p != (POINTER_TYPE *) region_end) |
4296 | { | |
4297 | /* Kernels are free to choose a different address. In | |
4298 | that case, unmap what we've mapped above; we have | |
4299 | no use for it. */ | |
4300 | if (munmap (p, nbytes) == -1) | |
4301 | fprintf (stderr, "munmap: %s\n", emacs_strerror (errno)); | |
4302 | } | |
4303 | else | |
4304 | { | |
4305 | r->nbytes_mapped += nbytes; | |
4306 | success = 1; | |
4307 | } | |
4308 | } | |
4309 | } | |
4310 | ||
4311 | return success; | |
4312 | } | |
4313 | ||
4314 | ||
4315 | /* Set or reset variables holding references to mapped regions. If | |
4316 | RESTORE_P is zero, set all variables to null. If RESTORE_P is | |
4317 | non-zero, set all variables to the start of the user-areas | |
4318 | of mapped regions. | |
4319 | ||
4320 | This function is called from Fdump_emacs to ensure that the dumped | |
4321 | Emacs doesn't contain references to memory that won't be mapped | |
4322 | when Emacs starts. */ | |
4323 | ||
4324 | void | |
4325 | mmap_set_vars (restore_p) | |
4326 | int restore_p; | |
4327 | { | |
4328 | struct mmap_region *r; | |
4329 | ||
4330 | if (restore_p) | |
4331 | { | |
4332 | mmap_regions = mmap_regions_1; | |
4333 | mmap_fd = mmap_fd_1; | |
4334 | for (r = mmap_regions; r; r = r->next) | |
4335 | *r->var = MMAP_USER_AREA (r); | |
4336 | } | |
4337 | else | |
4338 | { | |
4339 | for (r = mmap_regions; r; r = r->next) | |
4340 | *r->var = NULL; | |
4341 | mmap_regions_1 = mmap_regions; | |
4342 | mmap_regions = NULL; | |
4343 | mmap_fd_1 = mmap_fd; | |
4344 | mmap_fd = -1; | |
4345 | } | |
4346 | } | |
4347 | ||
4348 | ||
4349 | /* Allocate a block of storage large enough to hold NBYTES bytes of | |
4350 | data. A pointer to the data is returned in *VAR. VAR is thus the | |
4351 | address of some variable which will use the data area. | |
4352 | ||
4353 | The allocation of 0 bytes is valid. | |
4354 | ||
4355 | If we can't allocate the necessary memory, set *VAR to null, and | |
4356 | return null. */ | |
4357 | ||
4358 | static POINTER_TYPE * | |
4359 | mmap_alloc (var, nbytes) | |
4360 | POINTER_TYPE **var; | |
4361 | size_t nbytes; | |
4362 | { | |
4363 | void *p; | |
4364 | size_t map; | |
4365 | ||
4366 | mmap_init (); | |
4367 | ||
4368 | map = ROUND (nbytes + MMAP_REGION_STRUCT_SIZE, mmap_page_size); | |
4369 | p = mmap (NULL, map, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, | |
4370 | mmap_fd, 0); | |
4371 | ||
4372 | if (p == MAP_FAILED) | |
4373 | { | |
4374 | if (errno != ENOMEM) | |
4375 | fprintf (stderr, "mmap: %s\n", emacs_strerror (errno)); | |
4376 | p = NULL; | |
4377 | } | |
4378 | else | |
4379 | { | |
4380 | struct mmap_region *r = (struct mmap_region *) p; | |
4381 | ||
4382 | r->nbytes_specified = nbytes; | |
4383 | r->nbytes_mapped = map; | |
4384 | r->var = var; | |
4385 | r->prev = NULL; | |
4386 | r->next = mmap_regions; | |
4387 | if (r->next) | |
4388 | r->next->prev = r; | |
4389 | mmap_regions = r; | |
4390 | ||
4391 | p = MMAP_USER_AREA (p); | |
4392 | } | |
4393 | ||
4394 | return *var = p; | |
4395 | } | |
4396 | ||
4397 | ||
4398 | /* Given a pointer at address VAR to data allocated with mmap_alloc, | |
4399 | resize it to size NBYTES. Change *VAR to reflect the new block, | |
4400 | and return this value. If more memory cannot be allocated, then | |
4401 | leave *VAR unchanged, and return null. */ | |
4402 | ||
4403 | static POINTER_TYPE * | |
4404 | mmap_realloc (var, nbytes) | |
4405 | POINTER_TYPE **var; | |
4406 | size_t nbytes; | |
4407 | { | |
4408 | POINTER_TYPE *result; | |
4409 | ||
4410 | mmap_init (); | |
4411 | ||
4412 | if (*var == NULL) | |
4413 | result = mmap_alloc (var, nbytes); | |
4414 | else if (nbytes == 0) | |
4415 | { | |
4416 | mmap_free (var); | |
4417 | result = mmap_alloc (var, nbytes); | |
4418 | } | |
4419 | else | |
4420 | { | |
4421 | struct mmap_region *r = MMAP_REGION (*var); | |
4422 | size_t room = r->nbytes_mapped - MMAP_REGION_STRUCT_SIZE; | |
4423 | ||
4424 | if (room < nbytes) | |
4425 | { | |
4426 | /* Must enlarge. */ | |
4427 | POINTER_TYPE *old_ptr = *var; | |
4428 | ||
4429 | /* Try to map additional pages at the end of the region. | |
4430 | If that fails, allocate a new region, copy data | |
4431 | from the old region, then free it. */ | |
4432 | if (mmap_enlarge (r, (ROUND (nbytes - room, mmap_page_size) | |
4433 | / mmap_page_size))) | |
4434 | { | |
4435 | r->nbytes_specified = nbytes; | |
4436 | *var = result = old_ptr; | |
4437 | } | |
4438 | else if (mmap_alloc (var, nbytes)) | |
4439 | { | |
4440 | bcopy (old_ptr, *var, r->nbytes_specified); | |
4441 | mmap_free_1 (MMAP_REGION (old_ptr)); | |
4442 | result = *var; | |
4443 | r = MMAP_REGION (result); | |
4444 | r->nbytes_specified = nbytes; | |
4445 | } | |
4446 | else | |
4447 | { | |
4448 | *var = old_ptr; | |
4449 | result = NULL; | |
4450 | } | |
4451 | } | |
4452 | else if (room - nbytes >= mmap_page_size) | |
4453 | { | |
4454 | /* Shrinking by at least a page. Let's give some | |
4455 | memory back to the system. */ | |
4456 | mmap_enlarge (r, - (room - nbytes) / mmap_page_size); | |
4457 | result = *var; | |
4458 | r->nbytes_specified = nbytes; | |
4459 | } | |
4460 | else | |
4461 | { | |
4462 | /* Leave it alone. */ | |
4463 | result = *var; | |
4464 | r->nbytes_specified = nbytes; | |
4465 | } | |
4466 | } | |
4467 | ||
4468 | return result; | |
4469 | } | |
4470 | ||
4471 | ||
4472 | /* Free a block of relocatable storage whose data is pointed to by | |
4473 | PTR. Store 0 in *PTR to show there's no block allocated. */ | |
4474 | ||
4475 | static void | |
4476 | mmap_free (var) | |
4477 | POINTER_TYPE **var; | |
4478 | { | |
4479 | mmap_init (); | |
4480 | ||
4481 | if (*var) | |
4482 | { | |
4483 | mmap_free_1 (MMAP_REGION (*var)); | |
4484 | *var = NULL; | |
4485 | } | |
4486 | } | |
4487 | ||
4488 | ||
4489 | /* Perform necessary intializations for the use of mmap. */ | |
4490 | ||
4491 | static void | |
4492 | mmap_init () | |
4493 | { | |
4494 | #if MAP_ANON == 0 | |
4495 | /* The value of mmap_fd is initially 0 in temacs, and -1 | |
4496 | in a dumped Emacs. */ | |
4497 | if (mmap_fd <= 0) | |
4498 | { | |
4499 | /* No anonymous mmap -- we need the file descriptor. */ | |
4500 | mmap_fd = open ("/dev/zero", O_RDONLY); | |
4501 | if (mmap_fd == -1) | |
4502 | fatal ("Cannot open /dev/zero: %s", emacs_strerror (errno)); | |
4503 | } | |
4504 | #endif /* MAP_ANON == 0 */ | |
4505 | ||
4506 | if (mmap_initialized_p) | |
4507 | return; | |
4508 | mmap_initialized_p = 1; | |
4509 | ||
4510 | #if MAP_ANON != 0 | |
4511 | mmap_fd = -1; | |
4512 | #endif | |
4513 | ||
4514 | mmap_page_size = getpagesize (); | |
4515 | } | |
4516 | ||
4517 | #endif /* USE_MMAP_FOR_BUFFERS */ | |
4518 | ||
4519 | ||
4520 | \f | |
4521 | /*********************************************************************** | |
4522 | Buffer-text Allocation | |
4523 | ***********************************************************************/ | |
4524 | ||
4525 | #ifdef REL_ALLOC | |
4526 | extern POINTER_TYPE *r_alloc P_ ((POINTER_TYPE **, size_t)); | |
4527 | extern POINTER_TYPE *r_re_alloc P_ ((POINTER_TYPE **, size_t)); | |
4528 | extern void r_alloc_free P_ ((POINTER_TYPE **ptr)); | |
4529 | #endif /* REL_ALLOC */ | |
4530 | ||
4531 | ||
4532 | /* Allocate NBYTES bytes for buffer B's text buffer. */ | |
4533 | ||
4534 | static void | |
4535 | alloc_buffer_text (b, nbytes) | |
4536 | struct buffer *b; | |
4537 | size_t nbytes; | |
4538 | { | |
4539 | POINTER_TYPE *p; | |
4540 | ||
4541 | BLOCK_INPUT; | |
4542 | #if defined USE_MMAP_FOR_BUFFERS | |
4543 | p = mmap_alloc ((POINTER_TYPE **) &b->text->beg, nbytes); | |
4544 | #elif defined REL_ALLOC | |
4545 | p = r_alloc ((POINTER_TYPE **) &b->text->beg, nbytes); | |
4546 | #else | |
815add84 | 4547 | p = xmalloc (nbytes); |
b86af064 GM |
4548 | #endif |
4549 | ||
4550 | if (p == NULL) | |
4551 | { | |
4552 | UNBLOCK_INPUT; | |
4553 | memory_full (); | |
4554 | } | |
4555 | ||
4556 | b->text->beg = (unsigned char *) p; | |
4557 | UNBLOCK_INPUT; | |
4558 | } | |
4559 | ||
4560 | /* Enlarge buffer B's text buffer by DELTA bytes. DELTA < 0 means | |
4561 | shrink it. */ | |
4562 | ||
4563 | void | |
4564 | enlarge_buffer_text (b, delta) | |
4565 | struct buffer *b; | |
4566 | int delta; | |
4567 | { | |
4568 | POINTER_TYPE *p; | |
4569 | size_t nbytes = (BUF_Z_BYTE (b) - BUF_BEG_BYTE (b) + BUF_GAP_SIZE (b) + 1 | |
4570 | + delta); | |
4571 | BLOCK_INPUT; | |
4572 | #if defined USE_MMAP_FOR_BUFFERS | |
4573 | p = mmap_realloc ((POINTER_TYPE **) &b->text->beg, nbytes); | |
4574 | #elif defined REL_ALLOC | |
4575 | p = r_re_alloc ((POINTER_TYPE **) &b->text->beg, nbytes); | |
4576 | #else | |
4577 | p = xrealloc (b->text->beg, nbytes); | |
4578 | #endif | |
4579 | ||
4580 | if (p == NULL) | |
4581 | { | |
4582 | UNBLOCK_INPUT; | |
4583 | memory_full (); | |
4584 | } | |
4585 | ||
4586 | BUF_BEG_ADDR (b) = (unsigned char *) p; | |
4587 | UNBLOCK_INPUT; | |
4588 | } | |
4589 | ||
4590 | ||
4591 | /* Free buffer B's text buffer. */ | |
4592 | ||
4593 | static void | |
4594 | free_buffer_text (b) | |
4595 | struct buffer *b; | |
4596 | { | |
4597 | BLOCK_INPUT; | |
4598 | ||
4599 | #if defined USE_MMAP_FOR_BUFFERS | |
4600 | mmap_free ((POINTER_TYPE **) &b->text->beg); | |
4601 | #elif defined REL_ALLOC | |
4602 | r_alloc_free ((POINTER_TYPE **) &b->text->beg); | |
4603 | #else | |
4604 | xfree (b->text->beg); | |
4605 | #endif | |
4606 | ||
4607 | BUF_BEG_ADDR (b) = NULL; | |
4608 | UNBLOCK_INPUT; | |
4609 | } | |
4610 | ||
4611 | ||
4612 | \f | |
4613 | /*********************************************************************** | |
4614 | Initialization | |
4615 | ***********************************************************************/ | |
4616 | ||
dfcf069d | 4617 | void |
1ab256cb RM |
4618 | init_buffer_once () |
4619 | { | |
7c02e886 GM |
4620 | int idx; |
4621 | ||
4622 | bzero (buffer_permanent_local_flags, sizeof buffer_permanent_local_flags); | |
13de9290 | 4623 | |
1ab256cb RM |
4624 | /* Make sure all markable slots in buffer_defaults |
4625 | are initialized reasonably, so mark_buffer won't choke. */ | |
4626 | reset_buffer (&buffer_defaults); | |
13de9290 | 4627 | reset_buffer_local_variables (&buffer_defaults, 1); |
1ab256cb | 4628 | reset_buffer (&buffer_local_symbols); |
13de9290 | 4629 | reset_buffer_local_variables (&buffer_local_symbols, 1); |
336cd056 RS |
4630 | /* Prevent GC from getting confused. */ |
4631 | buffer_defaults.text = &buffer_defaults.own_text; | |
4632 | buffer_local_symbols.text = &buffer_local_symbols.own_text; | |
336cd056 RS |
4633 | BUF_INTERVALS (&buffer_defaults) = 0; |
4634 | BUF_INTERVALS (&buffer_local_symbols) = 0; | |
67180c6a KH |
4635 | XSETBUFFER (Vbuffer_defaults, &buffer_defaults); |
4636 | XSETBUFFER (Vbuffer_local_symbols, &buffer_local_symbols); | |
1ab256cb RM |
4637 | |
4638 | /* Set up the default values of various buffer slots. */ | |
4639 | /* Must do these before making the first buffer! */ | |
4640 | ||
f532dca0 | 4641 | /* real setup is done in bindings.el */ |
1ab256cb | 4642 | buffer_defaults.mode_line_format = build_string ("%-"); |
045dee35 | 4643 | buffer_defaults.header_line_format = Qnil; |
1ab256cb RM |
4644 | buffer_defaults.abbrev_mode = Qnil; |
4645 | buffer_defaults.overwrite_mode = Qnil; | |
4646 | buffer_defaults.case_fold_search = Qt; | |
4647 | buffer_defaults.auto_fill_function = Qnil; | |
4648 | buffer_defaults.selective_display = Qnil; | |
4649 | #ifndef old | |
4650 | buffer_defaults.selective_display_ellipses = Qt; | |
4651 | #endif | |
4652 | buffer_defaults.abbrev_table = Qnil; | |
4653 | buffer_defaults.display_table = Qnil; | |
1ab256cb | 4654 | buffer_defaults.undo_list = Qnil; |
c48f61ef | 4655 | buffer_defaults.mark_active = Qnil; |
be9aafdd | 4656 | buffer_defaults.file_format = Qnil; |
2eec3b4e RS |
4657 | buffer_defaults.overlays_before = Qnil; |
4658 | buffer_defaults.overlays_after = Qnil; | |
bbbe9545 | 4659 | XSETFASTINT (buffer_defaults.overlay_center, BEG); |
1ab256cb | 4660 | |
8d7a4592 | 4661 | XSETFASTINT (buffer_defaults.tab_width, 8); |
1ab256cb RM |
4662 | buffer_defaults.truncate_lines = Qnil; |
4663 | buffer_defaults.ctl_arrow = Qt; | |
3b06f880 | 4664 | buffer_defaults.direction_reversed = Qnil; |
bb2ec976 | 4665 | buffer_defaults.cursor_type = Qt; |
a3bbced0 | 4666 | buffer_defaults.extra_line_spacing = Qnil; |
1ab256cb | 4667 | |
f7975d07 | 4668 | #ifdef DOS_NT |
0776cb1b | 4669 | buffer_defaults.buffer_file_type = Qnil; /* TEXT */ |
54ad07d3 | 4670 | #endif |
a1a17b61 | 4671 | buffer_defaults.enable_multibyte_characters = Qt; |
c71b5d9b | 4672 | buffer_defaults.buffer_file_coding_system = Qnil; |
8d7a4592 KH |
4673 | XSETFASTINT (buffer_defaults.fill_column, 70); |
4674 | XSETFASTINT (buffer_defaults.left_margin, 0); | |
28e969dd | 4675 | buffer_defaults.cache_long_line_scans = Qnil; |
f6ed2e84 | 4676 | buffer_defaults.file_truename = Qnil; |
7962a441 | 4677 | XSETFASTINT (buffer_defaults.display_count, 0); |
0552666b GM |
4678 | buffer_defaults.indicate_empty_lines = Qnil; |
4679 | buffer_defaults.scroll_up_aggressively = Qnil; | |
4680 | buffer_defaults.scroll_down_aggressively = Qnil; | |
3fd364db | 4681 | buffer_defaults.display_time = Qnil; |
1ab256cb RM |
4682 | |
4683 | /* Assign the local-flags to the slots that have default values. | |
4684 | The local flag is a bit that is used in the buffer | |
4685 | to say that it has its own local value for the slot. | |
4686 | The local flag bits are in the local_var_flags slot of the buffer. */ | |
4687 | ||
4688 | /* Nothing can work if this isn't true */ | |
4d2f1389 | 4689 | if (sizeof (EMACS_INT) != sizeof (Lisp_Object)) abort (); |
1ab256cb RM |
4690 | |
4691 | /* 0 means not a lisp var, -1 means always local, else mask */ | |
4692 | bzero (&buffer_local_flags, sizeof buffer_local_flags); | |
aab80822 KH |
4693 | XSETINT (buffer_local_flags.filename, -1); |
4694 | XSETINT (buffer_local_flags.directory, -1); | |
4695 | XSETINT (buffer_local_flags.backed_up, -1); | |
4696 | XSETINT (buffer_local_flags.save_length, -1); | |
4697 | XSETINT (buffer_local_flags.auto_save_file_name, -1); | |
4698 | XSETINT (buffer_local_flags.read_only, -1); | |
4699 | XSETINT (buffer_local_flags.major_mode, -1); | |
4700 | XSETINT (buffer_local_flags.mode_name, -1); | |
4701 | XSETINT (buffer_local_flags.undo_list, -1); | |
4702 | XSETINT (buffer_local_flags.mark_active, -1); | |
943e065b | 4703 | XSETINT (buffer_local_flags.point_before_scroll, -1); |
f6ed2e84 | 4704 | XSETINT (buffer_local_flags.file_truename, -1); |
3cb719bd | 4705 | XSETINT (buffer_local_flags.invisibility_spec, -1); |
55ac8536 | 4706 | XSETINT (buffer_local_flags.file_format, -1); |
7962a441 | 4707 | XSETINT (buffer_local_flags.display_count, -1); |
3fd364db | 4708 | XSETINT (buffer_local_flags.display_time, -1); |
1bf08baf | 4709 | XSETINT (buffer_local_flags.enable_multibyte_characters, -1); |
8d7a4592 | 4710 | |
7c02e886 GM |
4711 | idx = 1; |
4712 | XSETFASTINT (buffer_local_flags.mode_line_format, idx); ++idx; | |
4713 | XSETFASTINT (buffer_local_flags.abbrev_mode, idx); ++idx; | |
4714 | XSETFASTINT (buffer_local_flags.overwrite_mode, idx); ++idx; | |
4715 | XSETFASTINT (buffer_local_flags.case_fold_search, idx); ++idx; | |
4716 | XSETFASTINT (buffer_local_flags.auto_fill_function, idx); ++idx; | |
4717 | XSETFASTINT (buffer_local_flags.selective_display, idx); ++idx; | |
1ab256cb | 4718 | #ifndef old |
7c02e886 | 4719 | XSETFASTINT (buffer_local_flags.selective_display_ellipses, idx); ++idx; |
1ab256cb | 4720 | #endif |
7c02e886 GM |
4721 | XSETFASTINT (buffer_local_flags.tab_width, idx); ++idx; |
4722 | XSETFASTINT (buffer_local_flags.truncate_lines, idx); ++idx; | |
4723 | XSETFASTINT (buffer_local_flags.ctl_arrow, idx); ++idx; | |
4724 | XSETFASTINT (buffer_local_flags.fill_column, idx); ++idx; | |
4725 | XSETFASTINT (buffer_local_flags.left_margin, idx); ++idx; | |
4726 | XSETFASTINT (buffer_local_flags.abbrev_table, idx); ++idx; | |
4727 | XSETFASTINT (buffer_local_flags.display_table, idx); ++idx; | |
f7975d07 | 4728 | #ifdef DOS_NT |
7c02e886 | 4729 | XSETFASTINT (buffer_local_flags.buffer_file_type, idx); |
13de9290 | 4730 | /* Make this one a permanent local. */ |
7c02e886 | 4731 | buffer_permanent_local_flags[idx++] = 1; |
54ad07d3 | 4732 | #endif |
7c02e886 GM |
4733 | XSETFASTINT (buffer_local_flags.syntax_table, idx); ++idx; |
4734 | XSETFASTINT (buffer_local_flags.cache_long_line_scans, idx); ++idx; | |
4735 | XSETFASTINT (buffer_local_flags.category_table, idx); ++idx; | |
4736 | XSETFASTINT (buffer_local_flags.direction_reversed, idx); ++idx; | |
4737 | XSETFASTINT (buffer_local_flags.buffer_file_coding_system, idx); | |
a1a17b61 | 4738 | /* Make this one a permanent local. */ |
7c02e886 GM |
4739 | buffer_permanent_local_flags[idx++] = 1; |
4740 | XSETFASTINT (buffer_local_flags.left_margin_width, idx); ++idx; | |
4741 | XSETFASTINT (buffer_local_flags.right_margin_width, idx); ++idx; | |
4742 | XSETFASTINT (buffer_local_flags.indicate_empty_lines, idx); ++idx; | |
4743 | XSETFASTINT (buffer_local_flags.scroll_up_aggressively, idx); ++idx; | |
4744 | XSETFASTINT (buffer_local_flags.scroll_down_aggressively, idx); ++idx; | |
4745 | XSETFASTINT (buffer_local_flags.header_line_format, idx); ++idx; | |
bd96bd79 | 4746 | XSETFASTINT (buffer_local_flags.cursor_type, idx); ++idx; |
a3bbced0 | 4747 | XSETFASTINT (buffer_local_flags.extra_line_spacing, idx); ++idx; |
7c02e886 GM |
4748 | |
4749 | /* Need more room? */ | |
7313acd0 | 4750 | if (idx >= MAX_PER_BUFFER_VARS) |
7c02e886 | 4751 | abort (); |
7313acd0 | 4752 | last_per_buffer_idx = idx; |
c71b5d9b | 4753 | |
1ab256cb RM |
4754 | Vbuffer_alist = Qnil; |
4755 | current_buffer = 0; | |
4756 | all_buffers = 0; | |
4757 | ||
4758 | QSFundamental = build_string ("Fundamental"); | |
4759 | ||
4760 | Qfundamental_mode = intern ("fundamental-mode"); | |
4761 | buffer_defaults.major_mode = Qfundamental_mode; | |
4762 | ||
4763 | Qmode_class = intern ("mode-class"); | |
4764 | ||
4765 | Qprotected_field = intern ("protected-field"); | |
4766 | ||
4767 | Qpermanent_local = intern ("permanent-local"); | |
4768 | ||
4769 | Qkill_buffer_hook = intern ("kill-buffer-hook"); | |
4770 | ||
4771 | Vprin1_to_string_buffer = Fget_buffer_create (build_string (" prin1")); | |
000f8083 | 4772 | |
1ab256cb RM |
4773 | /* super-magic invisible buffer */ |
4774 | Vbuffer_alist = Qnil; | |
4775 | ||
ffd56f97 | 4776 | Fset_buffer (Fget_buffer_create (build_string ("*scratch*"))); |
7775635d KH |
4777 | |
4778 | inhibit_modification_hooks = 0; | |
1ab256cb RM |
4779 | } |
4780 | ||
dfcf069d | 4781 | void |
1ab256cb RM |
4782 | init_buffer () |
4783 | { | |
93c27ef1 | 4784 | char buf[MAXPATHLEN + 1]; |
2381d133 JB |
4785 | char *pwd; |
4786 | struct stat dotstat, pwdstat; | |
136351b7 | 4787 | Lisp_Object temp; |
f7975d07 | 4788 | int rc; |
1ab256cb | 4789 | |
b86af064 | 4790 | #ifdef USE_MMAP_FOR_BUFFERS |
93c27ef1 GM |
4791 | { |
4792 | /* When using the ralloc implementation based on mmap(2), buffer | |
4793 | text pointers will have been set to null in the dumped Emacs. | |
4794 | Map new memory. */ | |
4795 | struct buffer *b; | |
4796 | ||
93c27ef1 GM |
4797 | for (b = all_buffers; b; b = b->next) |
4798 | if (b->text->beg == NULL) | |
b86af064 | 4799 | enlarge_buffer_text (b, 0); |
93c27ef1 | 4800 | } |
b86af064 | 4801 | #endif /* USE_MMAP_FOR_BUFFERS */ |
93c27ef1 | 4802 | |
1ab256cb | 4803 | Fset_buffer (Fget_buffer_create (build_string ("*scratch*"))); |
3d871c85 RS |
4804 | if (NILP (buffer_defaults.enable_multibyte_characters)) |
4805 | Fset_buffer_multibyte (Qnil); | |
2381d133 JB |
4806 | |
4807 | /* If PWD is accurate, use it instead of calling getwd. This is faster | |
4808 | when PWD is right, and may avoid a fatal error. */ | |
309f2a6e RS |
4809 | if ((pwd = getenv ("PWD")) != 0 |
4810 | && (IS_DIRECTORY_SEP (*pwd) || (*pwd && IS_DEVICE_SEP (pwd[1]))) | |
2381d133 JB |
4811 | && stat (pwd, &pwdstat) == 0 |
4812 | && stat (".", &dotstat) == 0 | |
4813 | && dotstat.st_ino == pwdstat.st_ino | |
4814 | && dotstat.st_dev == pwdstat.st_dev | |
4815 | && strlen (pwd) < MAXPATHLEN) | |
4816 | strcpy (buf, pwd); | |
6335beb0 RS |
4817 | #ifdef HAVE_GETCWD |
4818 | else if (getcwd (buf, MAXPATHLEN+1) == 0) | |
9dde47f5 | 4819 | fatal ("`getcwd' failed: %s\n", strerror (errno)); |
6335beb0 | 4820 | #else |
2381d133 | 4821 | else if (getwd (buf) == 0) |
cf1e6391 | 4822 | fatal ("`getwd' failed: %s\n", buf); |
6335beb0 | 4823 | #endif |
1ab256cb RM |
4824 | |
4825 | #ifndef VMS | |
4826 | /* Maybe this should really use some standard subroutine | |
4827 | whose definition is filename syntax dependent. */ | |
f7975d07 RS |
4828 | rc = strlen (buf); |
4829 | if (!(IS_DIRECTORY_SEP (buf[rc - 1]))) | |
4830 | { | |
4831 | buf[rc] = DIRECTORY_SEP; | |
4832 | buf[rc + 1] = '\0'; | |
4833 | } | |
1ab256cb | 4834 | #endif /* not VMS */ |
0995fa35 | 4835 | |
1ab256cb | 4836 | current_buffer->directory = build_string (buf); |
136351b7 | 4837 | |
0995fa35 RS |
4838 | /* Add /: to the front of the name |
4839 | if it would otherwise be treated as magic. */ | |
4840 | temp = Ffind_file_name_handler (current_buffer->directory, Qt); | |
81ab2e07 KH |
4841 | if (! NILP (temp) |
4842 | /* If the default dir is just /, TEMP is non-nil | |
4843 | because of the ange-ftp completion handler. | |
4844 | However, it is not necessary to turn / into /:/. | |
4845 | So avoid doing that. */ | |
4846 | && strcmp ("/", XSTRING (current_buffer->directory)->data)) | |
0995fa35 RS |
4847 | current_buffer->directory |
4848 | = concat2 (build_string ("/:"), current_buffer->directory); | |
4849 | ||
136351b7 RS |
4850 | temp = get_minibuffer (0); |
4851 | XBUFFER (temp)->directory = current_buffer->directory; | |
1ab256cb RM |
4852 | } |
4853 | ||
4854 | /* initialize the buffer routines */ | |
dfcf069d | 4855 | void |
1ab256cb RM |
4856 | syms_of_buffer () |
4857 | { | |
9115729e KH |
4858 | staticpro (&last_overlay_modification_hooks); |
4859 | last_overlay_modification_hooks | |
4860 | = Fmake_vector (make_number (10), Qnil); | |
4861 | ||
1ab256cb RM |
4862 | staticpro (&Vbuffer_defaults); |
4863 | staticpro (&Vbuffer_local_symbols); | |
4864 | staticpro (&Qfundamental_mode); | |
4865 | staticpro (&Qmode_class); | |
4866 | staticpro (&QSFundamental); | |
4867 | staticpro (&Vbuffer_alist); | |
4868 | staticpro (&Qprotected_field); | |
4869 | staticpro (&Qpermanent_local); | |
4870 | staticpro (&Qkill_buffer_hook); | |
22378665 | 4871 | Qoverlayp = intern ("overlayp"); |
52f8ec73 | 4872 | staticpro (&Qoverlayp); |
9d7608b7 KH |
4873 | Qevaporate = intern ("evaporate"); |
4874 | staticpro (&Qevaporate); | |
294d215f | 4875 | Qmodification_hooks = intern ("modification-hooks"); |
22378665 | 4876 | staticpro (&Qmodification_hooks); |
294d215f | 4877 | Qinsert_in_front_hooks = intern ("insert-in-front-hooks"); |
22378665 | 4878 | staticpro (&Qinsert_in_front_hooks); |
294d215f | 4879 | Qinsert_behind_hooks = intern ("insert-behind-hooks"); |
22378665 | 4880 | staticpro (&Qinsert_behind_hooks); |
5fe0b67e | 4881 | Qget_file_buffer = intern ("get-file-buffer"); |
22378665 | 4882 | staticpro (&Qget_file_buffer); |
5985d248 KH |
4883 | Qpriority = intern ("priority"); |
4884 | staticpro (&Qpriority); | |
4885 | Qwindow = intern ("window"); | |
4886 | staticpro (&Qwindow); | |
bbbe9545 KH |
4887 | Qbefore_string = intern ("before-string"); |
4888 | staticpro (&Qbefore_string); | |
4889 | Qafter_string = intern ("after-string"); | |
4890 | staticpro (&Qafter_string); | |
22378665 RS |
4891 | Qfirst_change_hook = intern ("first-change-hook"); |
4892 | staticpro (&Qfirst_change_hook); | |
4893 | Qbefore_change_functions = intern ("before-change-functions"); | |
4894 | staticpro (&Qbefore_change_functions); | |
4895 | Qafter_change_functions = intern ("after-change-functions"); | |
4896 | staticpro (&Qafter_change_functions); | |
1ab256cb RM |
4897 | |
4898 | Fput (Qprotected_field, Qerror_conditions, | |
4899 | Fcons (Qprotected_field, Fcons (Qerror, Qnil))); | |
4900 | Fput (Qprotected_field, Qerror_message, | |
4901 | build_string ("Attempt to modify a protected field")); | |
4902 | ||
4903 | /* All these use DEFVAR_LISP_NOPRO because the slots in | |
4904 | buffer_defaults will all be marked via Vbuffer_defaults. */ | |
4905 | ||
4906 | DEFVAR_LISP_NOPRO ("default-mode-line-format", | |
4907 | &buffer_defaults.mode_line_format, | |
4908 | "Default value of `mode-line-format' for buffers that don't override it.\n\ | |
4909 | This is the same as (default-value 'mode-line-format)."); | |
4910 | ||
045dee35 GM |
4911 | DEFVAR_LISP_NOPRO ("default-header-line-format", |
4912 | &buffer_defaults.header_line_format, | |
4913 | "Default value of `header-line-format' for buffers that don't override it.\n\ | |
4914 | This is the same as (default-value 'header-line-format)."); | |
0552666b | 4915 | |
bd96bd79 GM |
4916 | DEFVAR_LISP_NOPRO ("default-cursor-type", &buffer_defaults.cursor_type, |
4917 | "Default value of `cursor-type' for buffers that don't override it.\n\ | |
4918 | This is the same as (default-value 'cursor-type)."); | |
4919 | ||
a3bbced0 GM |
4920 | DEFVAR_LISP_NOPRO ("default-line-spacing", |
4921 | &buffer_defaults.extra_line_spacing, | |
4922 | "Default value of `line-spacing' for buffers that don't override it.\n\ | |
4923 | This is the same as (default-value 'line-spacing)."); | |
4924 | ||
1ab256cb RM |
4925 | DEFVAR_LISP_NOPRO ("default-abbrev-mode", |
4926 | &buffer_defaults.abbrev_mode, | |
4927 | "Default value of `abbrev-mode' for buffers that do not override it.\n\ | |
4928 | This is the same as (default-value 'abbrev-mode)."); | |
4929 | ||
4930 | DEFVAR_LISP_NOPRO ("default-ctl-arrow", | |
4931 | &buffer_defaults.ctl_arrow, | |
4932 | "Default value of `ctl-arrow' for buffers that do not override it.\n\ | |
4933 | This is the same as (default-value 'ctl-arrow)."); | |
4934 | ||
3b06f880 KH |
4935 | DEFVAR_LISP_NOPRO ("default-direction-reversed", |
4936 | &buffer_defaults.direction_reversed, | |
4937 | "Default value of `direction_reversed' for buffers that do not override it.\n\ | |
4938 | This is the same as (default-value 'direction-reversed)."); | |
4939 | ||
a1a17b61 KH |
4940 | DEFVAR_LISP_NOPRO ("default-enable-multibyte-characters", |
4941 | &buffer_defaults.enable_multibyte_characters, | |
ed8300d9 | 4942 | "*Default value of `enable-multibyte-characters' for buffers not overriding it.\n\ |
53fe786d | 4943 | This is the same as (default-value 'enable-multibyte-characters)."); |
a1a17b61 | 4944 | |
c71b5d9b KH |
4945 | DEFVAR_LISP_NOPRO ("default-buffer-file-coding-system", |
4946 | &buffer_defaults.buffer_file_coding_system, | |
4947 | "Default value of `buffer-file-coding-system' for buffers not overriding it.\n\ | |
53fe786d | 4948 | This is the same as (default-value 'buffer-file-coding-system)."); |
c71b5d9b | 4949 | |
1ab256cb RM |
4950 | DEFVAR_LISP_NOPRO ("default-truncate-lines", |
4951 | &buffer_defaults.truncate_lines, | |
4952 | "Default value of `truncate-lines' for buffers that do not override it.\n\ | |
4953 | This is the same as (default-value 'truncate-lines)."); | |
4954 | ||
4955 | DEFVAR_LISP_NOPRO ("default-fill-column", | |
4956 | &buffer_defaults.fill_column, | |
4957 | "Default value of `fill-column' for buffers that do not override it.\n\ | |
4958 | This is the same as (default-value 'fill-column)."); | |
4959 | ||
4960 | DEFVAR_LISP_NOPRO ("default-left-margin", | |
4961 | &buffer_defaults.left_margin, | |
4962 | "Default value of `left-margin' for buffers that do not override it.\n\ | |
4963 | This is the same as (default-value 'left-margin)."); | |
4964 | ||
4965 | DEFVAR_LISP_NOPRO ("default-tab-width", | |
4966 | &buffer_defaults.tab_width, | |
4967 | "Default value of `tab-width' for buffers that do not override it.\n\ | |
4968 | This is the same as (default-value 'tab-width)."); | |
4969 | ||
4970 | DEFVAR_LISP_NOPRO ("default-case-fold-search", | |
4971 | &buffer_defaults.case_fold_search, | |
4972 | "Default value of `case-fold-search' for buffers that don't override it.\n\ | |
4973 | This is the same as (default-value 'case-fold-search)."); | |
4974 | ||
f7975d07 | 4975 | #ifdef DOS_NT |
54ad07d3 RS |
4976 | DEFVAR_LISP_NOPRO ("default-buffer-file-type", |
4977 | &buffer_defaults.buffer_file_type, | |
4978 | "Default file type for buffers that do not override it.\n\ | |
4979 | This is the same as (default-value 'buffer-file-type).\n\ | |
4980 | The file type is nil for text, t for binary."); | |
4981 | #endif | |
4982 | ||
0552666b GM |
4983 | DEFVAR_LISP_NOPRO ("default-left-margin-width", |
4984 | &buffer_defaults.left_margin_width, | |
4985 | "Default value of `left-margin-width' for buffers that don't override it.\n\ | |
4986 | This is the same as (default-value 'left-margin-width)."); | |
4987 | ||
4988 | DEFVAR_LISP_NOPRO ("default-right-margin-width", | |
4989 | &buffer_defaults.right_margin_width, | |
4990 | "Default value of `right_margin_width' for buffers that don't override it.\n\ | |
4991 | This is the same as (default-value 'right-margin-width)."); | |
4992 | ||
4993 | DEFVAR_LISP_NOPRO ("default-indicate-empty-lines", | |
4994 | &buffer_defaults.indicate_empty_lines, | |
4995 | "Default value of `indicate-empty-lines' for buffers that don't override it.\n\ | |
4996 | This is the same as (default-value 'indicate-empty-lines)."); | |
4997 | ||
4998 | DEFVAR_LISP_NOPRO ("default-scroll-up-aggressively", | |
4999 | &buffer_defaults.scroll_up_aggressively, | |
5000 | "Default value of `scroll-up-aggressively' for buffers that\n\ | |
5001 | don't override it. This is the same as (default-value\n\ | |
5002 | 'scroll-up-aggressively)."); | |
5003 | ||
5004 | DEFVAR_LISP_NOPRO ("default-scroll-down-aggressively", | |
5005 | &buffer_defaults.scroll_down_aggressively, | |
5006 | "Default value of `scroll-down-aggressively' for buffers that\n\ | |
5007 | don't override it. This is the same as (default-value\n\ | |
5008 | 'scroll-down-aggressively)."); | |
5009 | ||
045dee35 GM |
5010 | DEFVAR_PER_BUFFER ("header-line-format", |
5011 | ¤t_buffer->header_line_format, | |
0552666b GM |
5012 | Qnil, |
5013 | "Analogous to `mode-line-format', but for a mode line displayed\n\ | |
5014 | at the top of windows."); | |
5015 | ||
0fa3ba92 JB |
5016 | DEFVAR_PER_BUFFER ("mode-line-format", ¤t_buffer->mode_line_format, |
5017 | Qnil, 0); | |
1ab256cb RM |
5018 | |
5019 | /* This doc string is too long for cpp; cpp dies if it isn't in a comment. | |
5020 | But make-docfile finds it! | |
5021 | DEFVAR_PER_BUFFER ("mode-line-format", ¤t_buffer->mode_line_format, | |
bec44fd6 | 5022 | Qnil, |
1ab256cb RM |
5023 | "Template for displaying mode line for current buffer.\n\ |
5024 | Each buffer has its own value of this variable.\n\ | |
0552666b GM |
5025 | Value may be nil, a string, a symbol or a list or cons cell.\n\ |
5026 | A value of nil means don't display a mode line.\n\ | |
1ab256cb RM |
5027 | For a symbol, its value is used (but it is ignored if t or nil).\n\ |
5028 | A string appearing directly as the value of a symbol is processed verbatim\n\ | |
5029 | in that the %-constructs below are not recognized.\n\ | |
fe512f27 GM |
5030 | For a list of the form `(:eval FORM)', FORM is evaluated and the result\n\ |
5031 | is used as a mode line element.\n\ | |
1ab256cb RM |
5032 | For a list whose car is a symbol, the symbol's value is taken,\n\ |
5033 | and if that is non-nil, the cadr of the list is processed recursively.\n\ | |
5034 | Otherwise, the caddr of the list (if there is one) is processed.\n\ | |
5035 | For a list whose car is a string or list, each element is processed\n\ | |
5036 | recursively and the results are effectively concatenated.\n\ | |
5037 | For a list whose car is an integer, the cdr of the list is processed\n\ | |
5038 | and padded (if the number is positive) or truncated (if negative)\n\ | |
5039 | to the width specified by that number.\n\ | |
5040 | A string is printed verbatim in the mode line except for %-constructs:\n\ | |
5041 | (%-constructs are allowed when the string is the entire mode-line-format\n\ | |
5042 | or when it is found in a cons-cell or a list)\n\ | |
5043 | %b -- print buffer name. %f -- print visited file name.\n\ | |
5d516f2d | 5044 | %F -- print frame name.\n\ |
c2ff34f7 | 5045 | %* -- print %, * or hyphen. %+ -- print *, % or hyphen.\n\ |
08de6200 | 5046 | %& is like %*, but ignore read-only-ness.\n\ |
c2ff34f7 RS |
5047 | % means buffer is read-only and * means it is modified.\n\ |
5048 | For a modified read-only buffer, %* gives % and %+ gives *.\n\ | |
a97c374a | 5049 | %s -- print process status. %l -- print the current line number.\n\ |
07924294 | 5050 | %c -- print the current column number (this makes editing slower).\n\ |
6a567ad8 RS |
5051 | To make the column number update correctly in all cases,\n\ |
5052 | `column-number-mode' must be non-nil.\n\ | |
dd24e6a6 | 5053 | %p -- print percent of buffer above top of window, or Top, Bot or All.\n\ |
9d130ffc | 5054 | %P -- print percent of buffer above bottom of window, perhaps plus Top,\n\ |
dd24e6a6 | 5055 | or print Bottom or All.\n\ |
08de6200 | 5056 | %m -- print the mode name.\n\ |
1ab256cb | 5057 | %n -- print Narrow if appropriate.\n\ |
08de6200 EZ |
5058 | %z -- print mnemonics of buffer, terminal, and keyboard coding systems.\n\ |
5059 | %Z -- like %z, but including the end-of-line format.\n\ | |
1ab256cb RM |
5060 | %[ -- print one [ for each recursive editing level. %] similar.\n\ |
5061 | %% -- print %. %- -- print infinitely many dashes.\n\ | |
5062 | Decimal digits after the % specify field width to which to pad."); | |
5063 | */ | |
5064 | ||
5065 | DEFVAR_LISP_NOPRO ("default-major-mode", &buffer_defaults.major_mode, | |
5066 | "*Major mode for new buffers. Defaults to `fundamental-mode'.\n\ | |
5067 | nil here means use current buffer's major mode."); | |
5068 | ||
5069 | DEFVAR_PER_BUFFER ("major-mode", ¤t_buffer->major_mode, | |
0fa3ba92 | 5070 | make_number (Lisp_Symbol), |
1ab256cb RM |
5071 | "Symbol for current buffer's major mode."); |
5072 | ||
5073 | DEFVAR_PER_BUFFER ("mode-name", ¤t_buffer->mode_name, | |
0fa3ba92 | 5074 | make_number (Lisp_String), |
1ab256cb RM |
5075 | "Pretty name of current buffer's major mode (a string)."); |
5076 | ||
0fa3ba92 | 5077 | DEFVAR_PER_BUFFER ("abbrev-mode", ¤t_buffer->abbrev_mode, Qnil, |
1ab256cb RM |
5078 | "Non-nil turns on automatic expansion of abbrevs as they are inserted.\n\ |
5079 | Automatically becomes buffer-local when set in any fashion."); | |
5080 | ||
5081 | DEFVAR_PER_BUFFER ("case-fold-search", ¤t_buffer->case_fold_search, | |
0fa3ba92 | 5082 | Qnil, |
5ed62574 | 5083 | "*Non-nil if searches and matches should ignore case.\n\ |
1ab256cb RM |
5084 | Automatically becomes buffer-local when set in any fashion."); |
5085 | ||
5086 | DEFVAR_PER_BUFFER ("fill-column", ¤t_buffer->fill_column, | |
0fa3ba92 | 5087 | make_number (Lisp_Int), |
1ab256cb RM |
5088 | "*Column beyond which automatic line-wrapping should happen.\n\ |
5089 | Automatically becomes buffer-local when set in any fashion."); | |
5090 | ||
5091 | DEFVAR_PER_BUFFER ("left-margin", ¤t_buffer->left_margin, | |
0fa3ba92 | 5092 | make_number (Lisp_Int), |
1ab256cb RM |
5093 | "*Column for the default indent-line-function to indent to.\n\ |
5094 | Linefeed indents to this column in Fundamental mode.\n\ | |
5095 | Automatically becomes buffer-local when set in any fashion."); | |
5096 | ||
5097 | DEFVAR_PER_BUFFER ("tab-width", ¤t_buffer->tab_width, | |
0fa3ba92 | 5098 | make_number (Lisp_Int), |
1ab256cb RM |
5099 | "*Distance between tab stops (for display of tab characters), in columns.\n\ |
5100 | Automatically becomes buffer-local when set in any fashion."); | |
5101 | ||
0fa3ba92 | 5102 | DEFVAR_PER_BUFFER ("ctl-arrow", ¤t_buffer->ctl_arrow, Qnil, |
1ab256cb | 5103 | "*Non-nil means display control chars with uparrow.\n\ |
6a99d31d | 5104 | A value of nil means use backslash and octal digits.\n\ |
1ab256cb RM |
5105 | Automatically becomes buffer-local when set in any fashion.\n\ |
5106 | This variable does not apply to characters whose display is specified\n\ | |
5107 | in the current display table (if there is one)."); | |
5108 | ||
3b06f880 | 5109 | DEFVAR_PER_BUFFER ("enable-multibyte-characters", |
1bf08baf KH |
5110 | ¤t_buffer->enable_multibyte_characters, |
5111 | make_number (-1), | |
36bb26f7 | 5112 | "Non-nil means the buffer contents are regarded as multi-byte characters.\n\ |
ed218f73 | 5113 | Otherwise they are regarded as unibyte. This affects the display,\n\ |
53fe786d RS |
5114 | file I/O and the behavior of various editing commands.\n\ |
5115 | \n\ | |
5116 | This variable is buffer-local but you cannot set it directly;\n\ | |
5117 | use the function `set-buffer-multibyte' to change a buffer's representation.\n\ | |
5118 | Changing its default value with `setq-default' is supported.\n\ | |
5119 | See also variable `default-enable-multibyte-characters' and Info node\n\ | |
5120 | `(elisp)Text Representations'."); | |
3b06f880 | 5121 | |
c71b5d9b KH |
5122 | DEFVAR_PER_BUFFER ("buffer-file-coding-system", |
5123 | ¤t_buffer->buffer_file_coding_system, Qnil, | |
5124 | "Coding system to be used for encoding the buffer contents on saving.\n\ | |
940daec1 RS |
5125 | This variable applies to saving the buffer, and also to `write-region'\n\ |
5126 | and other functions that use `write-region'.\n\ | |
5127 | It does not apply to sending output to subprocesses, however.\n\ | |
5128 | \n\ | |
5129 | If this is nil, the buffer is saved without any code conversion\n\ | |
5130 | unless some coding system is specified in `file-coding-system-alist'\n\ | |
c71b5d9b KH |
5131 | for the buffer file.\n\ |
5132 | \n\ | |
940daec1 RS |
5133 | The variable `coding-system-for-write', if non-nil, overrides this variable.\n\ |
5134 | \n\ | |
c71b5d9b KH |
5135 | This variable is never applied to a way of decoding\n\ |
5136 | a file while reading it."); | |
5137 | ||
3b06f880 KH |
5138 | DEFVAR_PER_BUFFER ("direction-reversed", ¤t_buffer->direction_reversed, |
5139 | Qnil, | |
5140 | "*Non-nil means lines in the buffer are displayed right to left."); | |
5141 | ||
0fa3ba92 | 5142 | DEFVAR_PER_BUFFER ("truncate-lines", ¤t_buffer->truncate_lines, Qnil, |
1ab256cb RM |
5143 | "*Non-nil means do not display continuation lines;\n\ |
5144 | give each line of text one screen line.\n\ | |
5145 | Automatically becomes buffer-local when set in any fashion.\n\ | |
5146 | \n\ | |
5147 | Note that this is overridden by the variable\n\ | |
5148 | `truncate-partial-width-windows' if that variable is non-nil\n\ | |
502b9b64 | 5149 | and this buffer is not full-frame width."); |
1ab256cb | 5150 | |
f7975d07 | 5151 | #ifdef DOS_NT |
54ad07d3 RS |
5152 | DEFVAR_PER_BUFFER ("buffer-file-type", ¤t_buffer->buffer_file_type, |
5153 | Qnil, | |
006d3d34 RS |
5154 | "Non-nil if the visited file is a binary file.\n\ |
5155 | This variable is meaningful on MS-DOG and Windows NT.\n\ | |
5156 | On those systems, it is automatically local in every buffer.\n\ | |
e0585c64 | 5157 | On other systems, this variable is normally always nil."); |
54ad07d3 RS |
5158 | #endif |
5159 | ||
1ab256cb | 5160 | DEFVAR_PER_BUFFER ("default-directory", ¤t_buffer->directory, |
0fa3ba92 | 5161 | make_number (Lisp_String), |
1ab256cb RM |
5162 | "Name of default directory of current buffer. Should end with slash.\n\ |
5163 | Each buffer has its own value of this variable."); | |
5164 | ||
5165 | DEFVAR_PER_BUFFER ("auto-fill-function", ¤t_buffer->auto_fill_function, | |
0fa3ba92 | 5166 | Qnil, |
1ab256cb | 5167 | "Function called (if non-nil) to perform auto-fill.\n\ |
139f13a7 | 5168 | It is called after self-inserting any character specified in\n\ |
6c9a7472 | 5169 | the `auto-fill-chars' table.\n\ |
1ab256cb | 5170 | Each buffer has its own value of this variable.\n\ |
54158e68 KH |
5171 | NOTE: This variable is not a hook;\n\ |
5172 | its value may not be a list of functions."); | |
1ab256cb RM |
5173 | |
5174 | DEFVAR_PER_BUFFER ("buffer-file-name", ¤t_buffer->filename, | |
0fa3ba92 | 5175 | make_number (Lisp_String), |
1ab256cb RM |
5176 | "Name of file visited in current buffer, or nil if not visiting a file.\n\ |
5177 | Each buffer has its own value of this variable."); | |
5178 | ||
f6ed2e84 RS |
5179 | DEFVAR_PER_BUFFER ("buffer-file-truename", ¤t_buffer->file_truename, |
5180 | make_number (Lisp_String), | |
bb4c204e | 5181 | "Abbreviated truename of file visited in current buffer, or nil if none.\n\ |
b1c03e64 RS |
5182 | The truename of a file is calculated by `file-truename'\n\ |
5183 | and then abbreviated with `abbreviate-file-name'.\n\ | |
f6ed2e84 RS |
5184 | Each buffer has its own value of this variable."); |
5185 | ||
1ab256cb | 5186 | DEFVAR_PER_BUFFER ("buffer-auto-save-file-name", |
3f5fcd47 | 5187 | ¤t_buffer->auto_save_file_name, |
0fa3ba92 | 5188 | make_number (Lisp_String), |
1ab256cb RM |
5189 | "Name of file for auto-saving current buffer,\n\ |
5190 | or nil if buffer should not be auto-saved.\n\ | |
5191 | Each buffer has its own value of this variable."); | |
5192 | ||
0fa3ba92 | 5193 | DEFVAR_PER_BUFFER ("buffer-read-only", ¤t_buffer->read_only, Qnil, |
1ab256cb RM |
5194 | "Non-nil if this buffer is read-only.\n\ |
5195 | Each buffer has its own value of this variable."); | |
5196 | ||
0fa3ba92 | 5197 | DEFVAR_PER_BUFFER ("buffer-backed-up", ¤t_buffer->backed_up, Qnil, |
1ab256cb RM |
5198 | "Non-nil if this buffer's file has been backed up.\n\ |
5199 | Backing up is done before the first time the file is saved.\n\ | |
5200 | Each buffer has its own value of this variable."); | |
5201 | ||
5202 | DEFVAR_PER_BUFFER ("buffer-saved-size", ¤t_buffer->save_length, | |
0fa3ba92 | 5203 | make_number (Lisp_Int), |
1ab256cb RM |
5204 | "Length of current buffer when last read in, saved or auto-saved.\n\ |
5205 | 0 initially.\n\ | |
5206 | Each buffer has its own value of this variable."); | |
5207 | ||
5208 | DEFVAR_PER_BUFFER ("selective-display", ¤t_buffer->selective_display, | |
0fa3ba92 | 5209 | Qnil, |
1ab256cb RM |
5210 | "Non-nil enables selective display:\n\ |
5211 | Integer N as value means display only lines\n\ | |
5212 | that start with less than n columns of space.\n\ | |
5213 | A value of t means, after a ^M, all the rest of the line is invisible.\n\ | |
5214 | Then ^M's in the file are written into files as newlines.\n\n\ | |
5215 | Automatically becomes buffer-local when set in any fashion."); | |
5216 | ||
5217 | #ifndef old | |
5218 | DEFVAR_PER_BUFFER ("selective-display-ellipses", | |
5219 | ¤t_buffer->selective_display_ellipses, | |
0fa3ba92 | 5220 | Qnil, |
1ab256cb RM |
5221 | "t means display ... on previous line when a line is invisible.\n\ |
5222 | Automatically becomes buffer-local when set in any fashion."); | |
5223 | #endif | |
5224 | ||
0fa3ba92 | 5225 | DEFVAR_PER_BUFFER ("overwrite-mode", ¤t_buffer->overwrite_mode, Qnil, |
1ab256cb | 5226 | "Non-nil if self-insertion should replace existing text.\n\ |
5e05d0a5 RS |
5227 | The value should be one of `overwrite-mode-textual',\n\ |
5228 | `overwrite-mode-binary', or nil.\n\ | |
5229 | If it is `overwrite-mode-textual', self-insertion still\n\ | |
6bbb0d4a | 5230 | inserts at the end of a line, and inserts when point is before a tab,\n\ |
2e94b813 | 5231 | until the tab is filled in.\n\ |
6bbb0d4a | 5232 | If `overwrite-mode-binary', self-insertion replaces newlines and tabs too.\n\ |
1ab256cb RM |
5233 | Automatically becomes buffer-local when set in any fashion."); |
5234 | ||
54939090 RS |
5235 | #if 0 /* The doc string is too long for some compilers, |
5236 | but make-docfile can find it in this comment. */ | |
1ab256cb | 5237 | DEFVAR_PER_BUFFER ("buffer-display-table", ¤t_buffer->display_table, |
5d305367 | 5238 | Qnil, |
1ab256cb RM |
5239 | "Display table that controls display of the contents of current buffer.\n\ |
5240 | Automatically becomes buffer-local when set in any fashion.\n\ | |
6fdc249f EN |
5241 | The display table is a char-table created with `make-display-table'.\n\ |
5242 | The ordinary char-table elements control how to display each possible text\n\ | |
5243 | character. Each value should be a vector of characters or nil;\n\ | |
1ab256cb | 5244 | nil means display the character in the default fashion.\n\ |
6fdc249f EN |
5245 | There are six extra slots to control the display of\n\ |
5246 | the end of a truncated screen line (extra-slot 0, a single character);\n\ | |
5247 | the end of a continued line (extra-slot 1, a single character);\n\ | |
6158b3b0 | 5248 | the escape character used to display character codes in octal\n\ |
6fdc249f EN |
5249 | (extra-slot 2, a single character);\n\ |
5250 | the character used as an arrow for control characters (extra-slot 3,\n\ | |
6158b3b0 | 5251 | a single character);\n\ |
6fdc249f | 5252 | the decoration indicating the presence of invisible lines (extra-slot 4,\n\ |
a45e35e1 JB |
5253 | a vector of characters);\n\ |
5254 | the character used to draw the border between side-by-side windows\n\ | |
6fdc249f EN |
5255 | (extra-slot 5, a single character).\n\ |
5256 | See also the functions `display-table-slot' and `set-display-table-slot'.\n\ | |
1ab256cb RM |
5257 | If this variable is nil, the value of `standard-display-table' is used.\n\ |
5258 | Each window can have its own, overriding display table."); | |
54939090 RS |
5259 | #endif |
5260 | DEFVAR_PER_BUFFER ("buffer-display-table", ¤t_buffer->display_table, | |
de15914a | 5261 | Qnil, 0); |
1ab256cb | 5262 | |
0552666b GM |
5263 | DEFVAR_PER_BUFFER ("left-margin-width", ¤t_buffer->left_margin_width, |
5264 | Qnil, | |
5265 | "*Width of left marginal area for display of a buffer.\n\ | |
5266 | Automatically becomes buffer-local when set in any fashion.\n\ | |
5267 | A value of nil means no marginal area."); | |
5268 | ||
5269 | DEFVAR_PER_BUFFER ("right-margin-width", ¤t_buffer->right_margin_width, | |
5270 | Qnil, | |
5271 | "*Width of right marginal area for display of a buffer.\n\ | |
5272 | Automatically becomes buffer-local when set in any fashion.\n\ | |
5273 | A value of nil means no marginal area."); | |
5274 | ||
5275 | DEFVAR_PER_BUFFER ("indicate-empty-lines", | |
5276 | ¤t_buffer->indicate_empty_lines, Qnil, | |
9d1ee976 GM |
5277 | "*Visually indicate empty lines after the buffer end.\n\ |
5278 | If non-nil, a bitmap is displayed in the left fringe of a window on\n\ | |
5279 | window-systems.\n\ | |
0552666b GM |
5280 | Automatically becomes buffer-local when set in any fashion.\n"); |
5281 | ||
5282 | DEFVAR_PER_BUFFER ("scroll-up-aggressively", | |
5283 | ¤t_buffer->scroll_up_aggressively, Qnil, | |
5284 | "*If a number, scroll display up aggressively.\n\ | |
5285 | If scrolling a window because point is above the window start, choose\n\ | |
5286 | a new window start so that point ends up that fraction of the window's\n\ | |
9b47cfe0 | 5287 | height from the top of the window.\n\ |
0552666b GM |
5288 | Automatically becomes buffer-local when set in any fashion."); |
5289 | ||
5290 | DEFVAR_PER_BUFFER ("scroll-down-aggressively", | |
5291 | ¤t_buffer->scroll_down_aggressively, Qnil, | |
5292 | "*If a number, scroll display down aggressively.\n\ | |
5293 | If scrolling a window because point is below the window end, choose\n\ | |
5294 | a new window start so that point ends up that fraction of the window's\n\ | |
9b47cfe0 | 5295 | height from the bottom of the window.\n\ |
0552666b GM |
5296 | Automatically becomes buffer-local when set in any fashion."); |
5297 | ||
1ab256cb RM |
5298 | /*DEFVAR_LISP ("debug-check-symbol", &Vcheck_symbol, |
5299 | "Don't ask."); | |
5300 | */ | |
1ab256cb | 5301 | |
5f079267 RS |
5302 | DEFVAR_LISP ("before-change-functions", &Vbefore_change_functions, |
5303 | "List of functions to call before each text change.\n\ | |
5304 | Two arguments are passed to each function: the positions of\n\ | |
5305 | the beginning and end of the range of old text to be changed.\n\ | |
5306 | \(For an insertion, the beginning and end are at the same place.)\n\ | |
5307 | No information is given about the length of the text after the change.\n\ | |
5f079267 RS |
5308 | \n\ |
5309 | Buffer changes made while executing the `before-change-functions'\n\ | |
b86344d0 RS |
5310 | don't call any before-change or after-change functions.\n\ |
5311 | That's because these variables are temporarily set to nil.\n\ | |
5312 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
5313 | these variables. See the Emacs Lisp manual for a way of\n\ | |
9ebc22d4 RS |
5314 | accomplishing an equivalent result by using other variables.\n\ |
5315 | \n\ | |
5316 | If an unhandled error happens in running these functions,\n\ | |
5317 | the variable's value remains nil. That prevents the error\n\ | |
5318 | from happening repeatedly and making Emacs nonfunctional."); | |
5f079267 RS |
5319 | Vbefore_change_functions = Qnil; |
5320 | ||
5321 | DEFVAR_LISP ("after-change-functions", &Vafter_change_functions, | |
5322 | "List of function to call after each text change.\n\ | |
5323 | Three arguments are passed to each function: the positions of\n\ | |
5324 | the beginning and end of the range of changed text,\n\ | |
839dd834 | 5325 | and the length in bytes of the pre-change text replaced by that range.\n\ |
5f079267 | 5326 | \(For an insertion, the pre-change length is zero;\n\ |
839dd834 | 5327 | for a deletion, that length is the number of bytes deleted,\n\ |
5f079267 RS |
5328 | and the post-change beginning and end are at the same place.)\n\ |
5329 | \n\ | |
5330 | Buffer changes made while executing the `after-change-functions'\n\ | |
b86344d0 RS |
5331 | don't call any before-change or after-change functions.\n\ |
5332 | That's because these variables are temporarily set to nil.\n\ | |
5333 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
5334 | these variables. See the Emacs Lisp manual for a way of\n\ | |
9ebc22d4 RS |
5335 | accomplishing an equivalent result by using other variables.\n\ |
5336 | \n\ | |
5337 | If an unhandled error happens in running these functions,\n\ | |
5338 | the variable's value remains nil. That prevents the error\n\ | |
5339 | from happening repeatedly and making Emacs nonfunctional."); | |
5f079267 RS |
5340 | Vafter_change_functions = Qnil; |
5341 | ||
dbc4e1c1 JB |
5342 | DEFVAR_LISP ("first-change-hook", &Vfirst_change_hook, |
5343 | "A list of functions to call before changing a buffer which is unmodified.\n\ | |
5344 | The functions are run using the `run-hooks' function."); | |
5345 | Vfirst_change_hook = Qnil; | |
1ab256cb | 5346 | |
54939090 RS |
5347 | #if 0 /* The doc string is too long for some compilers, |
5348 | but make-docfile can find it in this comment. */ | |
3f5fcd47 | 5349 | DEFVAR_PER_BUFFER ("buffer-undo-list", ¤t_buffer->undo_list, Qnil, |
1ab256cb | 5350 | "List of undo entries in current buffer.\n\ |
3fd364db | 5351 | This variable is always local in all buffers.\n\ |
1ab256cb RM |
5352 | Recent changes come first; older changes follow newer.\n\ |
5353 | \n\ | |
630f4018 KH |
5354 | An entry (BEG . END) represents an insertion which begins at\n\ |
5355 | position BEG and ends at position END.\n\ | |
1ab256cb RM |
5356 | \n\ |
5357 | An entry (TEXT . POSITION) represents the deletion of the string TEXT\n\ | |
5358 | from (abs POSITION). If POSITION is positive, point was at the front\n\ | |
5359 | of the text being deleted; if negative, point was at the end.\n\ | |
5360 | \n\ | |
6c0df54a RS |
5361 | An entry (t HIGH . LOW) indicates that the buffer previously had\n\ |
5362 | \"unmodified\" status. HIGH and LOW are the high and low 16-bit portions\n\ | |
5363 | of the visited file's modification time, as of that time. If the\n\ | |
5364 | modification time of the most recent save is different, this entry is\n\ | |
1ab256cb RM |
5365 | obsolete.\n\ |
5366 | \n\ | |
6c0df54a RS |
5367 | An entry (nil PROPERTY VALUE BEG . END) indicates that a text property\n\ |
5368 | was modified between BEG and END. PROPERTY is the property name,\n\ | |
5369 | and VALUE is the old value.\n\ | |
483c1fd3 | 5370 | \n\ |
da1c183c RS |
5371 | An entry (MARKER . DISTANCE) indicates that the marker MARKER\n\ |
5372 | was adjusted in position by the offset DISTANCE (an integer).\n\ | |
5373 | \n\ | |
bec44fd6 JB |
5374 | An entry of the form POSITION indicates that point was at the buffer\n\ |
5375 | location given by the integer. Undoing an entry of this form places\n\ | |
5376 | point at POSITION.\n\ | |
5377 | \n\ | |
1ab256cb RM |
5378 | nil marks undo boundaries. The undo command treats the changes\n\ |
5379 | between two undo boundaries as a single step to be undone.\n\ | |
5380 | \n\ | |
bec44fd6 | 5381 | If the value of the variable is t, undo information is not recorded."); |
54939090 RS |
5382 | #endif |
5383 | DEFVAR_PER_BUFFER ("buffer-undo-list", ¤t_buffer->undo_list, Qnil, | |
de15914a | 5384 | 0); |
1ab256cb | 5385 | |
c48f61ef RS |
5386 | DEFVAR_PER_BUFFER ("mark-active", ¤t_buffer->mark_active, Qnil, |
5387 | "Non-nil means the mark and region are currently active in this buffer.\n\ | |
5388 | Automatically local in all buffers."); | |
5389 | ||
28e969dd | 5390 | DEFVAR_PER_BUFFER ("cache-long-line-scans", ¤t_buffer->cache_long_line_scans, Qnil, |
f0c5b712 JB |
5391 | "Non-nil means that Emacs should use caches to handle long lines more quickly.\n\ |
5392 | This variable is buffer-local, in all buffers.\n\ | |
28e969dd | 5393 | \n\ |
f0c5b712 JB |
5394 | Normally, the line-motion functions work by scanning the buffer for\n\ |
5395 | newlines. Columnar operations (like move-to-column and\n\ | |
5396 | compute-motion) also work by scanning the buffer, summing character\n\ | |
5397 | widths as they go. This works well for ordinary text, but if the\n\ | |
28e969dd | 5398 | buffer's lines are very long (say, more than 500 characters), these\n\ |
f0c5b712 JB |
5399 | motion functions will take longer to execute. Emacs may also take\n\ |
5400 | longer to update the display.\n\ | |
28e969dd | 5401 | \n\ |
f0c5b712 JB |
5402 | If cache-long-line-scans is non-nil, these motion functions cache the\n\ |
5403 | results of their scans, and consult the cache to avoid rescanning\n\ | |
5404 | regions of the buffer until the text is modified. The caches are most\n\ | |
5405 | beneficial when they prevent the most searching---that is, when the\n\ | |
5406 | buffer contains long lines and large regions of characters with the\n\ | |
5407 | same, fixed screen width.\n\ | |
28e969dd | 5408 | \n\ |
f0c5b712 JB |
5409 | When cache-long-line-scans is non-nil, processing short lines will\n\ |
5410 | become slightly slower (because of the overhead of consulting the\n\ | |
5411 | cache), and the caches will use memory roughly proportional to the\n\ | |
5412 | number of newlines and characters whose screen width varies.\n\ | |
5413 | \n\ | |
5414 | The caches require no explicit maintenance; their accuracy is\n\ | |
5415 | maintained internally by the Emacs primitives. Enabling or disabling\n\ | |
5416 | the cache should not affect the behavior of any of the motion\n\ | |
5417 | functions; it should only affect their performance."); | |
28e969dd | 5418 | |
943e065b | 5419 | DEFVAR_PER_BUFFER ("point-before-scroll", ¤t_buffer->point_before_scroll, Qnil, |
3fd364db RS |
5420 | "Value of point before the last series of scroll operations, or nil.\n\ |
5421 | This variable is always local in all buffers."); | |
943e065b | 5422 | |
be9aafdd BG |
5423 | DEFVAR_PER_BUFFER ("buffer-file-format", ¤t_buffer->file_format, Qnil, |
5424 | "List of formats to use when saving this buffer.\n\ | |
3fd364db | 5425 | This variable is always local in all buffers.\n\ |
be9aafdd BG |
5426 | Formats are defined by `format-alist'. This variable is\n\ |
5427 | set when a file is visited. Automatically local in all buffers."); | |
5428 | ||
3cb719bd RS |
5429 | DEFVAR_PER_BUFFER ("buffer-invisibility-spec", |
5430 | ¤t_buffer->invisibility_spec, Qnil, | |
5431 | "Invisibility spec of this buffer.\n\ | |
3fd364db | 5432 | This variable is always local in all buffers.\n\ |
3cb719bd RS |
5433 | The default is t, which means that text is invisible\n\ |
5434 | if it has a non-nil `invisible' property.\n\ | |
5435 | If the value is a list, a text character is invisible if its `invisible'\n\ | |
5436 | property is an element in that list.\n\ | |
554216ad KH |
5437 | If an element is a cons cell of the form (PROP . ELLIPSIS),\n\ |
5438 | then characters with property value PROP are invisible,\n\ | |
3cb719bd RS |
5439 | and they have an ellipsis as well if ELLIPSIS is non-nil."); |
5440 | ||
7962a441 RS |
5441 | DEFVAR_PER_BUFFER ("buffer-display-count", |
5442 | ¤t_buffer->display_count, Qnil, | |
3fd364db RS |
5443 | "A number incremented each time this buffer is displayed in a window.\n\ |
5444 | This variable is always local in all buffers.\n\ | |
5445 | The function `set-window-buffer increments it."); | |
5446 | ||
5447 | DEFVAR_PER_BUFFER ("buffer-display-time", | |
5448 | ¤t_buffer->display_time, Qnil, | |
5449 | "Time stamp updated each time this buffer is displayed in a window.\n\ | |
5450 | This variable is always local in all buffers.\n\ | |
5451 | The function `set-window-buffer' updates this variable\n\ | |
5452 | to the value obtained by calling `current-time'.\n\ | |
5453 | If the buffer has never been shown in a window, the value is nil."); | |
7962a441 | 5454 | |
c48f61ef | 5455 | DEFVAR_LISP ("transient-mark-mode", &Vtransient_mark_mode, |
319c537c RS |
5456 | "*Non-nil means deactivate the mark when the buffer contents change.\n\ |
5457 | Non-nil also enables highlighting of the region whenever the mark is active.\n\ | |
5458 | The variable `highlight-nonselected-windows' controls whether to highlight\n\ | |
5459 | all windows or just the selected window."); | |
c48f61ef RS |
5460 | Vtransient_mark_mode = Qnil; |
5461 | ||
0a4469c9 | 5462 | DEFVAR_LISP ("inhibit-read-only", &Vinhibit_read_only, |
a96b68f1 RS |
5463 | "*Non-nil means disregard read-only status of buffers or characters.\n\ |
5464 | If the value is t, disregard `buffer-read-only' and all `read-only'\n\ | |
5465 | text properties. If the value is a list, disregard `buffer-read-only'\n\ | |
5466 | and disregard a `read-only' text property if the property value\n\ | |
5467 | is a member of the list."); | |
5468 | Vinhibit_read_only = Qnil; | |
5469 | ||
bb2ec976 GM |
5470 | DEFVAR_PER_BUFFER ("cursor-type", ¤t_buffer->cursor_type, Qnil, |
5471 | "Cursor to use in window displaying this buffer.\n\ | |
5472 | Values are interpreted as follows:\n\ | |
5473 | \n\ | |
5474 | t use the cursor specified for the frame\n\ | |
5475 | nil don't display a cursor\n\ | |
5476 | `bar' display a bar cursor with default width\n\ | |
5477 | (bar . WIDTH) display a bar cursor with width WIDTH\n\ | |
5478 | others display a box cursor."); | |
5479 | ||
a3bbced0 GM |
5480 | DEFVAR_PER_BUFFER ("line-spacing", |
5481 | ¤t_buffer->extra_line_spacing, Qnil, | |
5482 | "Additional space to put between lines when displaying a buffer.\n\ | |
5483 | The space is measured in pixels, and put below lines on window systems."); | |
5484 | ||
dcdffbf6 RS |
5485 | DEFVAR_LISP ("kill-buffer-query-functions", &Vkill_buffer_query_functions, |
5486 | "List of functions called with no args to query before killing a buffer."); | |
5487 | Vkill_buffer_query_functions = Qnil; | |
5488 | ||
0dc88e60 | 5489 | defsubr (&Sbuffer_live_p); |
1ab256cb RM |
5490 | defsubr (&Sbuffer_list); |
5491 | defsubr (&Sget_buffer); | |
5492 | defsubr (&Sget_file_buffer); | |
5493 | defsubr (&Sget_buffer_create); | |
336cd056 | 5494 | defsubr (&Smake_indirect_buffer); |
01050cb5 | 5495 | defsubr (&Sgenerate_new_buffer_name); |
1ab256cb RM |
5496 | defsubr (&Sbuffer_name); |
5497 | /*defsubr (&Sbuffer_number);*/ | |
5498 | defsubr (&Sbuffer_file_name); | |
336cd056 | 5499 | defsubr (&Sbuffer_base_buffer); |
1ab256cb RM |
5500 | defsubr (&Sbuffer_local_variables); |
5501 | defsubr (&Sbuffer_modified_p); | |
5502 | defsubr (&Sset_buffer_modified_p); | |
5503 | defsubr (&Sbuffer_modified_tick); | |
5504 | defsubr (&Srename_buffer); | |
5505 | defsubr (&Sother_buffer); | |
5506 | defsubr (&Sbuffer_disable_undo); | |
5507 | defsubr (&Sbuffer_enable_undo); | |
5508 | defsubr (&Skill_buffer); | |
a9ee7a59 | 5509 | defsubr (&Sset_buffer_major_mode); |
1ab256cb RM |
5510 | defsubr (&Sswitch_to_buffer); |
5511 | defsubr (&Spop_to_buffer); | |
5512 | defsubr (&Scurrent_buffer); | |
5513 | defsubr (&Sset_buffer); | |
5514 | defsubr (&Sbarf_if_buffer_read_only); | |
5515 | defsubr (&Sbury_buffer); | |
3ac81adb RS |
5516 | defsubr (&Serase_buffer); |
5517 | defsubr (&Sset_buffer_multibyte); | |
1ab256cb | 5518 | defsubr (&Skill_all_local_variables); |
2eec3b4e | 5519 | |
52f8ec73 | 5520 | defsubr (&Soverlayp); |
2eec3b4e RS |
5521 | defsubr (&Smake_overlay); |
5522 | defsubr (&Sdelete_overlay); | |
5523 | defsubr (&Smove_overlay); | |
8ebafa8d JB |
5524 | defsubr (&Soverlay_start); |
5525 | defsubr (&Soverlay_end); | |
5526 | defsubr (&Soverlay_buffer); | |
5527 | defsubr (&Soverlay_properties); | |
2eec3b4e | 5528 | defsubr (&Soverlays_at); |
74514898 | 5529 | defsubr (&Soverlays_in); |
2eec3b4e | 5530 | defsubr (&Snext_overlay_change); |
239c932b | 5531 | defsubr (&Sprevious_overlay_change); |
2eec3b4e RS |
5532 | defsubr (&Soverlay_recenter); |
5533 | defsubr (&Soverlay_lists); | |
5534 | defsubr (&Soverlay_get); | |
5535 | defsubr (&Soverlay_put); | |
a8c21b48 | 5536 | defsubr (&Srestore_buffer_modified_p); |
1ab256cb RM |
5537 | } |
5538 | ||
dfcf069d | 5539 | void |
1ab256cb RM |
5540 | keys_of_buffer () |
5541 | { | |
5542 | initial_define_key (control_x_map, 'b', "switch-to-buffer"); | |
5543 | initial_define_key (control_x_map, 'k', "kill-buffer"); | |
4158c17d RM |
5544 | |
5545 | /* This must not be in syms_of_buffer, because Qdisabled is not | |
5546 | initialized when that function gets called. */ | |
5547 | Fput (intern ("erase-buffer"), Qdisabled, Qt); | |
1ab256cb | 5548 | } |