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 RS |
27 | #include <errno.h> |
28 | ||
29 | extern int errno; | |
1ab256cb RM |
30 | |
31 | #ifndef MAXPATHLEN | |
32 | /* in 4.1, param.h fails to define this. */ | |
33 | #define MAXPATHLEN 1024 | |
34 | #endif /* not MAXPATHLEN */ | |
35 | ||
dfcf069d AS |
36 | #ifdef HAVE_UNISTD_H |
37 | #include <unistd.h> | |
38 | #endif | |
1ab256cb | 39 | #include "lisp.h" |
21cf4cf8 | 40 | #include "intervals.h" |
1ab256cb RM |
41 | #include "window.h" |
42 | #include "commands.h" | |
43 | #include "buffer.h" | |
3b06f880 | 44 | #include "charset.h" |
28e969dd | 45 | #include "region-cache.h" |
1ab256cb | 46 | #include "indent.h" |
d014bf88 | 47 | #include "blockinput.h" |
08460cd4 | 48 | #include "frame.h" |
1ab256cb RM |
49 | |
50 | struct buffer *current_buffer; /* the current buffer */ | |
51 | ||
52 | /* First buffer in chain of all buffers (in reverse order of creation). | |
53 | Threaded through ->next. */ | |
54 | ||
55 | struct buffer *all_buffers; | |
56 | ||
57 | /* This structure holds the default values of the buffer-local variables | |
58 | defined with DEFVAR_PER_BUFFER, that have special slots in each buffer. | |
59 | The default value occupies the same slot in this structure | |
60 | as an individual buffer's value occupies in that buffer. | |
61 | Setting the default value also goes through the alist of buffers | |
62 | and stores into each buffer that does not say it has a local value. */ | |
63 | ||
64 | struct buffer buffer_defaults; | |
65 | ||
66 | /* A Lisp_Object pointer to the above, used for staticpro */ | |
67 | ||
68 | static Lisp_Object Vbuffer_defaults; | |
69 | ||
70 | /* This structure marks which slots in a buffer have corresponding | |
71 | default values in buffer_defaults. | |
72 | Each such slot has a nonzero value in this structure. | |
73 | The value has only one nonzero bit. | |
74 | ||
75 | When a buffer has its own local value for a slot, | |
7c02e886 GM |
76 | the entry for that slot (found in the same slot in this structure) |
77 | is turned on in the buffer's local_flags array. | |
1ab256cb RM |
78 | |
79 | If a slot in this structure is -1, then even though there may | |
80 | be a DEFVAR_PER_BUFFER for the slot, there is no default value for it; | |
81 | and the corresponding slot in buffer_defaults is not used. | |
82 | ||
83 | If a slot is -2, then there is no DEFVAR_PER_BUFFER for it, | |
84 | but there is a default value which is copied into each buffer. | |
85 | ||
86 | If a slot in this structure is negative, then even though there may | |
87 | be a DEFVAR_PER_BUFFER for the slot, there is no default value for it; | |
88 | and the corresponding slot in buffer_defaults is not used. | |
89 | ||
90 | If a slot in this structure corresponding to a DEFVAR_PER_BUFFER is | |
91 | zero, that is a bug */ | |
92 | ||
93 | struct buffer buffer_local_flags; | |
94 | ||
95 | /* This structure holds the names of symbols whose values may be | |
96 | buffer-local. It is indexed and accessed in the same way as the above. */ | |
97 | ||
98 | struct buffer buffer_local_symbols; | |
99 | /* A Lisp_Object pointer to the above, used for staticpro */ | |
100 | static Lisp_Object Vbuffer_local_symbols; | |
101 | ||
0fa3ba92 JB |
102 | /* This structure holds the required types for the values in the |
103 | buffer-local slots. If a slot contains Qnil, then the | |
104 | corresponding buffer slot may contain a value of any type. If a | |
105 | slot contains an integer, then prospective values' tags must be | |
1bf08baf KH |
106 | equal to that integer (except nil is always allowed). |
107 | When a tag does not match, the function | |
108 | buffer_slot_type_mismatch will signal an error. | |
109 | ||
110 | If a slot here contains -1, the corresponding variable is read-only. */ | |
0fa3ba92 JB |
111 | struct buffer buffer_local_types; |
112 | ||
13de9290 RS |
113 | /* Flags indicating which built-in buffer-local variables |
114 | are permanent locals. */ | |
7313acd0 | 115 | static char buffer_permanent_local_flags[MAX_PER_BUFFER_VARS]; |
7c02e886 GM |
116 | |
117 | /* Number of per-buffer variables used. */ | |
118 | ||
7313acd0 | 119 | int last_per_buffer_idx; |
13de9290 | 120 | |
1ab256cb | 121 | Lisp_Object Fset_buffer (); |
01050cb5 | 122 | void set_buffer_internal (); |
c7aa5005 | 123 | void set_buffer_internal_1 (); |
173f2a64 | 124 | static void call_overlay_mod_hooks (); |
2f3f993b | 125 | static void swap_out_buffer_local_variables (); |
13de9290 | 126 | static void reset_buffer_local_variables (); |
1ab256cb RM |
127 | |
128 | /* Alist of all buffer names vs the buffers. */ | |
129 | /* This used to be a variable, but is no longer, | |
130 | to prevent lossage due to user rplac'ing this alist or its elements. */ | |
131 | Lisp_Object Vbuffer_alist; | |
132 | ||
133 | /* Functions to call before and after each text change. */ | |
5f079267 RS |
134 | Lisp_Object Vbefore_change_functions; |
135 | Lisp_Object Vafter_change_functions; | |
1ab256cb | 136 | |
c48f61ef RS |
137 | Lisp_Object Vtransient_mark_mode; |
138 | ||
a96b68f1 RS |
139 | /* t means ignore all read-only text properties. |
140 | A list means ignore such a property if its value is a member of the list. | |
141 | Any non-nil value means ignore buffer-read-only. */ | |
142 | Lisp_Object Vinhibit_read_only; | |
143 | ||
dcdffbf6 RS |
144 | /* List of functions to call that can query about killing a buffer. |
145 | If any of these functions returns nil, we don't kill it. */ | |
146 | Lisp_Object Vkill_buffer_query_functions; | |
147 | ||
dbc4e1c1 JB |
148 | /* List of functions to call before changing an unmodified buffer. */ |
149 | Lisp_Object Vfirst_change_hook; | |
22378665 | 150 | |
dbc4e1c1 | 151 | Lisp_Object Qfirst_change_hook; |
22378665 RS |
152 | Lisp_Object Qbefore_change_functions; |
153 | Lisp_Object Qafter_change_functions; | |
1ab256cb | 154 | |
7775635d KH |
155 | /* If nonzero, all modification hooks are suppressed. */ |
156 | int inhibit_modification_hooks; | |
157 | ||
1ab256cb RM |
158 | Lisp_Object Qfundamental_mode, Qmode_class, Qpermanent_local; |
159 | ||
160 | Lisp_Object Qprotected_field; | |
161 | ||
162 | Lisp_Object QSFundamental; /* A string "Fundamental" */ | |
163 | ||
164 | Lisp_Object Qkill_buffer_hook; | |
165 | ||
5fe0b67e RS |
166 | Lisp_Object Qget_file_buffer; |
167 | ||
52f8ec73 JB |
168 | Lisp_Object Qoverlayp; |
169 | ||
bbbe9545 | 170 | Lisp_Object Qpriority, Qwindow, Qevaporate, Qbefore_string, Qafter_string; |
5985d248 | 171 | |
294d215f RS |
172 | Lisp_Object Qmodification_hooks; |
173 | Lisp_Object Qinsert_in_front_hooks; | |
174 | Lisp_Object Qinsert_behind_hooks; | |
175 | ||
1ab256cb RM |
176 | /* For debugging; temporary. See set_buffer_internal. */ |
177 | /* Lisp_Object Qlisp_mode, Vcheck_symbol; */ | |
178 | ||
01136e9b | 179 | void |
1ab256cb RM |
180 | nsberror (spec) |
181 | Lisp_Object spec; | |
182 | { | |
a7a60ce9 | 183 | if (STRINGP (spec)) |
1ab256cb RM |
184 | error ("No buffer named %s", XSTRING (spec)->data); |
185 | error ("Invalid buffer argument"); | |
186 | } | |
187 | \f | |
0dc88e60 RS |
188 | DEFUN ("buffer-live-p", Fbuffer_live_p, Sbuffer_live_p, 1, 1, 0, |
189 | "Return non-nil if OBJECT is a buffer which has not been killed.\n\ | |
190 | Value is nil if OBJECT is not a buffer or if it has been killed.") | |
191 | (object) | |
192 | Lisp_Object object; | |
193 | { | |
194 | return ((BUFFERP (object) && ! NILP (XBUFFER (object)->name)) | |
195 | ? Qt : Qnil); | |
196 | } | |
197 | ||
08460cd4 RS |
198 | DEFUN ("buffer-list", Fbuffer_list, Sbuffer_list, 0, 1, 0, |
199 | "Return a list of all existing live buffers.\n\ | |
200 | If the optional arg FRAME is a frame, we return that frame's buffer list.") | |
201 | (frame) | |
202 | Lisp_Object frame; | |
1ab256cb | 203 | { |
08460cd4 RS |
204 | Lisp_Object framelist, general; |
205 | general = Fmapcar (Qcdr, Vbuffer_alist); | |
206 | ||
207 | if (FRAMEP (frame)) | |
208 | { | |
209 | Lisp_Object tail; | |
210 | ||
211 | CHECK_FRAME (frame, 1); | |
212 | ||
213 | framelist = Fcopy_sequence (XFRAME (frame)->buffer_list); | |
214 | ||
215 | /* Remove from GENERAL any buffer that duplicates one in FRAMELIST. */ | |
216 | tail = framelist; | |
217 | while (! NILP (tail)) | |
218 | { | |
7539e11f KR |
219 | general = Fdelq (XCAR (tail), general); |
220 | tail = XCDR (tail); | |
08460cd4 RS |
221 | } |
222 | return nconc2 (framelist, general); | |
223 | } | |
224 | ||
225 | return general; | |
1ab256cb RM |
226 | } |
227 | ||
04ae1b48 RS |
228 | /* Like Fassoc, but use Fstring_equal to compare |
229 | (which ignores text properties), | |
230 | and don't ever QUIT. */ | |
231 | ||
232 | static Lisp_Object | |
233 | assoc_ignore_text_properties (key, list) | |
234 | register Lisp_Object key; | |
235 | Lisp_Object list; | |
236 | { | |
237 | register Lisp_Object tail; | |
238 | for (tail = list; !NILP (tail); tail = Fcdr (tail)) | |
239 | { | |
240 | register Lisp_Object elt, tem; | |
241 | elt = Fcar (tail); | |
242 | tem = Fstring_equal (Fcar (elt), key); | |
243 | if (!NILP (tem)) | |
244 | return elt; | |
245 | } | |
246 | return Qnil; | |
247 | } | |
248 | ||
1ab256cb RM |
249 | DEFUN ("get-buffer", Fget_buffer, Sget_buffer, 1, 1, 0, |
250 | "Return the buffer named NAME (a string).\n\ | |
251 | If there is no live buffer named NAME, return nil.\n\ | |
252 | NAME may also be a buffer; if so, the value is that buffer.") | |
253 | (name) | |
254 | register Lisp_Object name; | |
255 | { | |
a7a60ce9 | 256 | if (BUFFERP (name)) |
1ab256cb RM |
257 | return name; |
258 | CHECK_STRING (name, 0); | |
259 | ||
04ae1b48 | 260 | return Fcdr (assoc_ignore_text_properties (name, Vbuffer_alist)); |
1ab256cb RM |
261 | } |
262 | ||
263 | DEFUN ("get-file-buffer", Fget_file_buffer, Sget_file_buffer, 1, 1, 0, | |
264 | "Return the buffer visiting file FILENAME (a string).\n\ | |
92194d02 | 265 | The buffer's `buffer-file-name' must match exactly the expansion of FILENAME.\n\ |
11da5363 RS |
266 | If there is no such live buffer, return nil.\n\ |
267 | See also `find-buffer-visiting'.") | |
1ab256cb RM |
268 | (filename) |
269 | register Lisp_Object filename; | |
270 | { | |
271 | register Lisp_Object tail, buf, tem; | |
5fe0b67e RS |
272 | Lisp_Object handler; |
273 | ||
1ab256cb RM |
274 | CHECK_STRING (filename, 0); |
275 | filename = Fexpand_file_name (filename, Qnil); | |
276 | ||
5fe0b67e RS |
277 | /* If the file name has special constructs in it, |
278 | call the corresponding file handler. */ | |
a617e913 | 279 | handler = Ffind_file_name_handler (filename, Qget_file_buffer); |
5fe0b67e RS |
280 | if (!NILP (handler)) |
281 | return call2 (handler, Qget_file_buffer, filename); | |
282 | ||
7539e11f | 283 | for (tail = Vbuffer_alist; CONSP (tail); tail = XCDR (tail)) |
1ab256cb | 284 | { |
7539e11f | 285 | buf = Fcdr (XCAR (tail)); |
a7a60ce9 KH |
286 | if (!BUFFERP (buf)) continue; |
287 | if (!STRINGP (XBUFFER (buf)->filename)) continue; | |
1ab256cb | 288 | tem = Fstring_equal (XBUFFER (buf)->filename, filename); |
265a9e55 | 289 | if (!NILP (tem)) |
1ab256cb RM |
290 | return buf; |
291 | } | |
292 | return Qnil; | |
293 | } | |
294 | ||
52e01189 RS |
295 | Lisp_Object |
296 | get_truename_buffer (filename) | |
297 | register Lisp_Object filename; | |
298 | { | |
299 | register Lisp_Object tail, buf, tem; | |
300 | ||
7539e11f | 301 | for (tail = Vbuffer_alist; CONSP (tail); tail = XCDR (tail)) |
52e01189 | 302 | { |
7539e11f | 303 | buf = Fcdr (XCAR (tail)); |
52e01189 RS |
304 | if (!BUFFERP (buf)) continue; |
305 | if (!STRINGP (XBUFFER (buf)->file_truename)) continue; | |
306 | tem = Fstring_equal (XBUFFER (buf)->file_truename, filename); | |
307 | if (!NILP (tem)) | |
308 | return buf; | |
309 | } | |
310 | return Qnil; | |
311 | } | |
312 | ||
1ab256cb RM |
313 | /* Incremented for each buffer created, to assign the buffer number. */ |
314 | int buffer_count; | |
315 | ||
316 | DEFUN ("get-buffer-create", Fget_buffer_create, Sget_buffer_create, 1, 1, 0, | |
317 | "Return the buffer named NAME, or create such a buffer and return it.\n\ | |
318 | A new buffer is created if there is no live buffer named NAME.\n\ | |
b44895bc | 319 | If NAME starts with a space, the new buffer does not keep undo information.\n\ |
1ab256cb RM |
320 | If NAME is a buffer instead of a string, then it is the value returned.\n\ |
321 | The value is never nil.") | |
322 | (name) | |
323 | register Lisp_Object name; | |
324 | { | |
a9ee7a59 | 325 | register Lisp_Object buf; |
1ab256cb RM |
326 | register struct buffer *b; |
327 | ||
328 | buf = Fget_buffer (name); | |
265a9e55 | 329 | if (!NILP (buf)) |
1ab256cb RM |
330 | return buf; |
331 | ||
31cd83e9 KH |
332 | if (XSTRING (name)->size == 0) |
333 | error ("Empty string for buffer name is not allowed"); | |
334 | ||
a21260d9 | 335 | b = (struct buffer *) allocate_buffer (); |
1ab256cb | 336 | |
336cd056 RS |
337 | b->size = sizeof (struct buffer) / sizeof (EMACS_INT); |
338 | ||
339 | /* An ordinary buffer uses its own struct buffer_text. */ | |
340 | b->text = &b->own_text; | |
341 | b->base_buffer = 0; | |
342 | ||
1ab256cb | 343 | BUF_GAP_SIZE (b) = 20; |
9ac0d9e0 | 344 | BLOCK_INPUT; |
3b06f880 KH |
345 | /* We allocate extra 1-byte at the tail and keep it always '\0' for |
346 | anchoring a search. */ | |
347 | BUFFER_ALLOC (BUF_BEG_ADDR (b), (BUF_GAP_SIZE (b) + 1)); | |
9ac0d9e0 | 348 | UNBLOCK_INPUT; |
1ab256cb | 349 | if (! BUF_BEG_ADDR (b)) |
81841847 | 350 | buffer_memory_full (); |
1ab256cb RM |
351 | |
352 | BUF_PT (b) = 1; | |
353 | BUF_GPT (b) = 1; | |
354 | BUF_BEGV (b) = 1; | |
355 | BUF_ZV (b) = 1; | |
356 | BUF_Z (b) = 1; | |
3f236a40 RS |
357 | BUF_PT_BYTE (b) = 1; |
358 | BUF_GPT_BYTE (b) = 1; | |
359 | BUF_BEGV_BYTE (b) = 1; | |
360 | BUF_ZV_BYTE (b) = 1; | |
361 | BUF_Z_BYTE (b) = 1; | |
1ab256cb | 362 | BUF_MODIFF (b) = 1; |
2509d356 | 363 | BUF_OVERLAY_MODIFF (b) = 1; |
336cd056 RS |
364 | BUF_SAVE_MODIFF (b) = 1; |
365 | BUF_INTERVALS (b) = 0; | |
b5a225b4 GM |
366 | BUF_UNCHANGED_MODIFIED (b) = 1; |
367 | BUF_OVERLAY_UNCHANGED_MODIFIED (b) = 1; | |
368 | BUF_END_UNCHANGED (b) = 0; | |
369 | BUF_BEG_UNCHANGED (b) = 0; | |
3b06f880 | 370 | *(BUF_GPT_ADDR (b)) = *(BUF_Z_ADDR (b)) = 0; /* Put an anchor '\0'. */ |
1ab256cb | 371 | |
28e969dd JB |
372 | b->newline_cache = 0; |
373 | b->width_run_cache = 0; | |
374 | b->width_table = Qnil; | |
b5a225b4 | 375 | b->prevent_redisplay_optimizations_p = 1; |
28e969dd | 376 | |
1ab256cb RM |
377 | /* Put this on the chain of all buffers including killed ones. */ |
378 | b->next = all_buffers; | |
379 | all_buffers = b; | |
380 | ||
336cd056 RS |
381 | /* An ordinary buffer normally doesn't need markers |
382 | to handle BEGV and ZV. */ | |
383 | b->pt_marker = Qnil; | |
384 | b->begv_marker = Qnil; | |
385 | b->zv_marker = Qnil; | |
04ae1b48 RS |
386 | |
387 | name = Fcopy_sequence (name); | |
388 | INITIALIZE_INTERVAL (XSTRING (name), NULL_INTERVAL); | |
1ab256cb | 389 | b->name = name; |
04ae1b48 | 390 | |
1ab256cb RM |
391 | if (XSTRING (name)->data[0] != ' ') |
392 | b->undo_list = Qnil; | |
393 | else | |
394 | b->undo_list = Qt; | |
395 | ||
396 | reset_buffer (b); | |
13de9290 | 397 | reset_buffer_local_variables (b, 1); |
1ab256cb RM |
398 | |
399 | /* Put this in the alist of all live buffers. */ | |
67180c6a | 400 | XSETBUFFER (buf, b); |
1ab256cb RM |
401 | Vbuffer_alist = nconc2 (Vbuffer_alist, Fcons (Fcons (name, buf), Qnil)); |
402 | ||
403 | b->mark = Fmake_marker (); | |
336cd056 RS |
404 | BUF_MARKERS (b) = Qnil; |
405 | b->name = name; | |
406 | return buf; | |
407 | } | |
408 | ||
7e9d5818 GM |
409 | |
410 | /* Clone per-buffer values of buffer FROM. | |
411 | ||
412 | Buffer TO gets the same per-buffer values as FROM, with the | |
413 | following exceptions: (1) TO's name is left untouched, (2) markers | |
414 | are copied and made to refer to TO, and (3) overlay lists are | |
415 | copied. */ | |
416 | ||
417 | static void | |
418 | clone_per_buffer_values (from, to) | |
419 | struct buffer *from, *to; | |
420 | { | |
421 | Lisp_Object to_buffer; | |
422 | int offset; | |
423 | ||
424 | XSETBUFFER (to_buffer, to); | |
425 | ||
426 | for (offset = PER_BUFFER_VAR_OFFSET (name) + sizeof (Lisp_Object); | |
427 | offset < sizeof *to; | |
428 | offset += sizeof (Lisp_Object)) | |
429 | { | |
430 | Lisp_Object obj; | |
431 | ||
432 | obj = PER_BUFFER_VALUE (from, offset); | |
433 | if (MARKERP (obj)) | |
434 | { | |
435 | struct Lisp_Marker *m = XMARKER (obj); | |
436 | obj = Fmake_marker (); | |
437 | XMARKER (obj)->insertion_type = m->insertion_type; | |
438 | set_marker_both (obj, to_buffer, m->charpos, m->bytepos); | |
439 | } | |
440 | ||
441 | PER_BUFFER_VALUE (to, offset) = obj; | |
442 | } | |
443 | ||
444 | to->overlays_after = Fcopy_sequence (from->overlays_after); | |
445 | to->overlays_before = Fcopy_sequence (to->overlays_before); | |
446 | bcopy (from->local_flags, to->local_flags, sizeof to->local_flags); | |
447 | } | |
448 | ||
449 | ||
450 | DEFUN ("make-indirect-buffer", Fmake_indirect_buffer, Smake_indirect_buffer, | |
451 | 2, 3, | |
193c3837 | 452 | "bMake indirect buffer (to buffer): \nBName of indirect buffer: ", |
a2428fa2 EN |
453 | "Create and return an indirect buffer for buffer BASE-BUFFER, named NAME.\n\ |
454 | BASE-BUFFER should be an existing buffer (or buffer name).\n\ | |
7e9d5818 GM |
455 | NAME should be a string which is not the name of an existing buffer.\n\ |
456 | Optional argument CLONE non-nil means preserve BASE-BUFFER's state,\n\ | |
f532dca0 | 457 | such as major and minor modes, in the indirect buffer.\n\ |
7e9d5818 GM |
458 | CLONE nil means the indirect buffer's state is reset to default values.") |
459 | (base_buffer, name, clone) | |
460 | Lisp_Object base_buffer, name, clone; | |
336cd056 | 461 | { |
7e9d5818 GM |
462 | Lisp_Object buf; |
463 | struct buffer *b; | |
336cd056 RS |
464 | |
465 | buf = Fget_buffer (name); | |
466 | if (!NILP (buf)) | |
467 | error ("Buffer name `%s' is in use", XSTRING (name)->data); | |
468 | ||
469 | base_buffer = Fget_buffer (base_buffer); | |
470 | if (NILP (base_buffer)) | |
471 | error ("No such buffer: `%s'", | |
472 | XSTRING (XBUFFER (base_buffer)->name)->data); | |
473 | ||
474 | if (XSTRING (name)->size == 0) | |
475 | error ("Empty string for buffer name is not allowed"); | |
476 | ||
a21260d9 | 477 | b = (struct buffer *) allocate_buffer (); |
336cd056 RS |
478 | b->size = sizeof (struct buffer) / sizeof (EMACS_INT); |
479 | ||
480 | if (XBUFFER (base_buffer)->base_buffer) | |
481 | b->base_buffer = XBUFFER (base_buffer)->base_buffer; | |
482 | else | |
483 | b->base_buffer = XBUFFER (base_buffer); | |
484 | ||
485 | /* Use the base buffer's text object. */ | |
486 | b->text = b->base_buffer->text; | |
487 | ||
488 | BUF_BEGV (b) = BUF_BEGV (b->base_buffer); | |
489 | BUF_ZV (b) = BUF_ZV (b->base_buffer); | |
490 | BUF_PT (b) = BUF_PT (b->base_buffer); | |
3f236a40 RS |
491 | BUF_BEGV_BYTE (b) = BUF_BEGV_BYTE (b->base_buffer); |
492 | BUF_ZV_BYTE (b) = BUF_ZV_BYTE (b->base_buffer); | |
493 | BUF_PT_BYTE (b) = BUF_PT_BYTE (b->base_buffer); | |
336cd056 RS |
494 | |
495 | b->newline_cache = 0; | |
496 | b->width_run_cache = 0; | |
497 | b->width_table = Qnil; | |
498 | ||
499 | /* Put this on the chain of all buffers including killed ones. */ | |
500 | b->next = all_buffers; | |
501 | all_buffers = b; | |
502 | ||
503 | name = Fcopy_sequence (name); | |
504 | INITIALIZE_INTERVAL (XSTRING (name), NULL_INTERVAL); | |
505 | b->name = name; | |
506 | ||
507 | reset_buffer (b); | |
13de9290 | 508 | reset_buffer_local_variables (b, 1); |
336cd056 RS |
509 | |
510 | /* Put this in the alist of all live buffers. */ | |
511 | XSETBUFFER (buf, b); | |
512 | Vbuffer_alist = nconc2 (Vbuffer_alist, Fcons (Fcons (name, buf), Qnil)); | |
513 | ||
514 | b->mark = Fmake_marker (); | |
1ab256cb | 515 | b->name = name; |
336cd056 | 516 | |
abc9d959 RS |
517 | /* The multibyte status belongs to the base buffer. */ |
518 | b->enable_multibyte_characters = b->base_buffer->enable_multibyte_characters; | |
519 | ||
336cd056 RS |
520 | /* Make sure the base buffer has markers for its narrowing. */ |
521 | if (NILP (b->base_buffer->pt_marker)) | |
522 | { | |
523 | b->base_buffer->pt_marker = Fmake_marker (); | |
3f236a40 RS |
524 | set_marker_both (b->base_buffer->pt_marker, base_buffer, |
525 | BUF_PT (b->base_buffer), | |
526 | BUF_PT_BYTE (b->base_buffer)); | |
336cd056 RS |
527 | } |
528 | if (NILP (b->base_buffer->begv_marker)) | |
529 | { | |
530 | b->base_buffer->begv_marker = Fmake_marker (); | |
3f236a40 RS |
531 | set_marker_both (b->base_buffer->begv_marker, base_buffer, |
532 | BUF_BEGV (b->base_buffer), | |
533 | BUF_BEGV_BYTE (b->base_buffer)); | |
336cd056 RS |
534 | } |
535 | if (NILP (b->base_buffer->zv_marker)) | |
536 | { | |
537 | b->base_buffer->zv_marker = Fmake_marker (); | |
3f236a40 RS |
538 | set_marker_both (b->base_buffer->zv_marker, base_buffer, |
539 | BUF_ZV (b->base_buffer), | |
540 | BUF_ZV_BYTE (b->base_buffer)); | |
26d84681 | 541 | XMARKER (b->base_buffer->zv_marker)->insertion_type = 1; |
336cd056 RS |
542 | } |
543 | ||
7e9d5818 GM |
544 | if (NILP (clone)) |
545 | { | |
546 | /* Give the indirect buffer markers for its narrowing. */ | |
547 | b->pt_marker = Fmake_marker (); | |
548 | set_marker_both (b->pt_marker, buf, BUF_PT (b), BUF_PT_BYTE (b)); | |
549 | b->begv_marker = Fmake_marker (); | |
550 | set_marker_both (b->begv_marker, buf, BUF_BEGV (b), BUF_BEGV_BYTE (b)); | |
551 | b->zv_marker = Fmake_marker (); | |
552 | set_marker_both (b->zv_marker, buf, BUF_ZV (b), BUF_ZV_BYTE (b)); | |
553 | XMARKER (b->zv_marker)->insertion_type = 1; | |
554 | } | |
555 | else | |
556 | clone_per_buffer_values (b->base_buffer, b); | |
336cd056 | 557 | |
a9ee7a59 | 558 | return buf; |
1ab256cb RM |
559 | } |
560 | ||
bcd40520 RS |
561 | /* Reinitialize everything about a buffer except its name and contents |
562 | and local variables. */ | |
1ab256cb RM |
563 | |
564 | void | |
565 | reset_buffer (b) | |
566 | register struct buffer *b; | |
567 | { | |
568 | b->filename = Qnil; | |
f6ed2e84 | 569 | b->file_truename = Qnil; |
1ab256cb RM |
570 | b->directory = (current_buffer) ? current_buffer->directory : Qnil; |
571 | b->modtime = 0; | |
8d7a4592 | 572 | XSETFASTINT (b->save_length, 0); |
1ab256cb | 573 | b->last_window_start = 1; |
8b264726 | 574 | /* It is more conservative to start out "changed" than "unchanged". */ |
b5a225b4 GM |
575 | b->clip_changed = 0; |
576 | b->prevent_redisplay_optimizations_p = 1; | |
1ab256cb RM |
577 | b->backed_up = Qnil; |
578 | b->auto_save_modified = 0; | |
84f6bcba | 579 | b->auto_save_failure_time = -1; |
1ab256cb RM |
580 | b->auto_save_file_name = Qnil; |
581 | b->read_only = Qnil; | |
2eec3b4e RS |
582 | b->overlays_before = Qnil; |
583 | b->overlays_after = Qnil; | |
8d7a4592 | 584 | XSETFASTINT (b->overlay_center, 1); |
dfda7a7f | 585 | b->mark_active = Qnil; |
943e065b | 586 | b->point_before_scroll = Qnil; |
be9aafdd | 587 | b->file_format = Qnil; |
0dc6f165 | 588 | b->last_selected_window = Qnil; |
7962a441 | 589 | XSETINT (b->display_count, 0); |
3fd364db | 590 | b->display_time = Qnil; |
1bf08baf | 591 | b->enable_multibyte_characters = buffer_defaults.enable_multibyte_characters; |
bb2ec976 | 592 | b->cursor_type = buffer_defaults.cursor_type; |
a3bbced0 | 593 | b->extra_line_spacing = buffer_defaults.extra_line_spacing; |
1ab256cb RM |
594 | } |
595 | ||
bcd40520 RS |
596 | /* Reset buffer B's local variables info. |
597 | Don't use this on a buffer that has already been in use; | |
598 | it does not treat permanent locals consistently. | |
13de9290 RS |
599 | Instead, use Fkill_all_local_variables. |
600 | ||
601 | If PERMANENT_TOO is 1, then we reset permanent built-in | |
602 | buffer-local variables. If PERMANENT_TOO is 0, | |
603 | we preserve those. */ | |
bcd40520 | 604 | |
13de9290 RS |
605 | static void |
606 | reset_buffer_local_variables (b, permanent_too) | |
1ab256cb | 607 | register struct buffer *b; |
13de9290 | 608 | int permanent_too; |
1ab256cb RM |
609 | { |
610 | register int offset; | |
7c02e886 | 611 | int i; |
1ab256cb RM |
612 | |
613 | /* Reset the major mode to Fundamental, together with all the | |
614 | things that depend on the major mode. | |
615 | default-major-mode is handled at a higher level. | |
616 | We ignore it here. */ | |
617 | b->major_mode = Qfundamental_mode; | |
618 | b->keymap = Qnil; | |
619 | b->abbrev_table = Vfundamental_mode_abbrev_table; | |
620 | b->mode_name = QSFundamental; | |
621 | b->minor_modes = Qnil; | |
3446af9c RS |
622 | |
623 | /* If the standard case table has been altered and invalidated, | |
624 | fix up its insides first. */ | |
625 | if (! (CHAR_TABLE_P (XCHAR_TABLE (Vascii_downcase_table)->extras[0]) | |
626 | && CHAR_TABLE_P (XCHAR_TABLE (Vascii_downcase_table)->extras[1]) | |
627 | && CHAR_TABLE_P (XCHAR_TABLE (Vascii_downcase_table)->extras[2]))) | |
628 | Fset_standard_case_table (Vascii_downcase_table); | |
629 | ||
1ab256cb | 630 | b->downcase_table = Vascii_downcase_table; |
1e9b6335 RS |
631 | b->upcase_table = XCHAR_TABLE (Vascii_downcase_table)->extras[0]; |
632 | b->case_canon_table = XCHAR_TABLE (Vascii_downcase_table)->extras[1]; | |
633 | b->case_eqv_table = XCHAR_TABLE (Vascii_downcase_table)->extras[2]; | |
3cb719bd | 634 | b->invisibility_spec = Qt; |
2e716096 RS |
635 | #ifndef DOS_NT |
636 | b->buffer_file_type = Qnil; | |
637 | #endif | |
3cb719bd | 638 | |
1ab256cb RM |
639 | #if 0 |
640 | b->sort_table = XSTRING (Vascii_sort_table); | |
641 | b->folding_sort_table = XSTRING (Vascii_folding_sort_table); | |
642 | #endif /* 0 */ | |
643 | ||
13de9290 | 644 | /* Reset all (or most) per-buffer variables to their defaults. */ |
1ab256cb | 645 | b->local_var_alist = Qnil; |
7313acd0 | 646 | for (i = 0; i < last_per_buffer_idx; ++i) |
7c02e886 | 647 | if (permanent_too || buffer_permanent_local_flags[i] == 0) |
7313acd0 | 648 | SET_PER_BUFFER_VALUE_P (b, i, 0); |
1ab256cb RM |
649 | |
650 | /* For each slot that has a default value, | |
651 | copy that into the slot. */ | |
652 | ||
7313acd0 | 653 | for (offset = PER_BUFFER_VAR_OFFSET (name); |
7c02e886 GM |
654 | offset < sizeof *b; |
655 | offset += sizeof (Lisp_Object)) | |
aab80822 | 656 | { |
7313acd0 | 657 | int idx = PER_BUFFER_IDX (offset); |
7c02e886 GM |
658 | if ((idx > 0 |
659 | && (permanent_too | |
660 | || buffer_permanent_local_flags[idx] == 0)) | |
661 | /* Is -2 used anywhere? */ | |
662 | || idx == -2) | |
7313acd0 | 663 | PER_BUFFER_VALUE (b, offset) = PER_BUFFER_DEFAULT (offset); |
aab80822 | 664 | } |
1ab256cb RM |
665 | } |
666 | ||
01050cb5 RM |
667 | /* We split this away from generate-new-buffer, because rename-buffer |
668 | and set-visited-file-name ought to be able to use this to really | |
669 | rename the buffer properly. */ | |
670 | ||
671 | DEFUN ("generate-new-buffer-name", Fgenerate_new_buffer_name, Sgenerate_new_buffer_name, | |
c273e647 | 672 | 1, 2, 0, |
01050cb5 RM |
673 | "Return a string that is the name of no existing buffer based on NAME.\n\ |
674 | If there is no live buffer named NAME, then return NAME.\n\ | |
1ab256cb | 675 | Otherwise modify name by appending `<NUMBER>', incrementing NUMBER\n\ |
c273e647 | 676 | until an unused name is found, and then return that name.\n\ |
03bdd54c | 677 | Optional second argument IGNORE specifies a name that is okay to use\n\ |
c273e647 | 678 | \(if it is in the sequence to be tried)\n\ |
e8b3a22d | 679 | even if a buffer with that name exists.") |
c273e647 RS |
680 | (name, ignore) |
681 | register Lisp_Object name, ignore; | |
1ab256cb RM |
682 | { |
683 | register Lisp_Object gentemp, tem; | |
684 | int count; | |
685 | char number[10]; | |
686 | ||
687 | CHECK_STRING (name, 0); | |
688 | ||
689 | tem = Fget_buffer (name); | |
265a9e55 | 690 | if (NILP (tem)) |
01050cb5 | 691 | return name; |
1ab256cb RM |
692 | |
693 | count = 1; | |
694 | while (1) | |
695 | { | |
696 | sprintf (number, "<%d>", ++count); | |
697 | gentemp = concat2 (name, build_string (number)); | |
638e4fc3 | 698 | tem = Fstring_equal (gentemp, ignore); |
c273e647 RS |
699 | if (!NILP (tem)) |
700 | return gentemp; | |
1ab256cb | 701 | tem = Fget_buffer (gentemp); |
265a9e55 | 702 | if (NILP (tem)) |
01050cb5 | 703 | return gentemp; |
1ab256cb RM |
704 | } |
705 | } | |
706 | ||
707 | \f | |
708 | DEFUN ("buffer-name", Fbuffer_name, Sbuffer_name, 0, 1, 0, | |
709 | "Return the name of BUFFER, as a string.\n\ | |
01050cb5 | 710 | With no argument or nil as argument, return the name of the current buffer.") |
1ab256cb RM |
711 | (buffer) |
712 | register Lisp_Object buffer; | |
713 | { | |
265a9e55 | 714 | if (NILP (buffer)) |
1ab256cb RM |
715 | return current_buffer->name; |
716 | CHECK_BUFFER (buffer, 0); | |
717 | return XBUFFER (buffer)->name; | |
718 | } | |
719 | ||
720 | DEFUN ("buffer-file-name", Fbuffer_file_name, Sbuffer_file_name, 0, 1, 0, | |
721 | "Return name of file BUFFER is visiting, or nil if none.\n\ | |
722 | No argument or nil as argument means use the current buffer.") | |
723 | (buffer) | |
724 | register Lisp_Object buffer; | |
725 | { | |
265a9e55 | 726 | if (NILP (buffer)) |
1ab256cb RM |
727 | return current_buffer->filename; |
728 | CHECK_BUFFER (buffer, 0); | |
729 | return XBUFFER (buffer)->filename; | |
730 | } | |
731 | ||
336cd056 RS |
732 | DEFUN ("buffer-base-buffer", Fbuffer_base_buffer, Sbuffer_base_buffer, |
733 | 0, 1, 0, | |
734 | "Return the base buffer of indirect buffer BUFFER.\n\ | |
735 | If BUFFER is not indirect, return nil.") | |
736 | (buffer) | |
737 | register Lisp_Object buffer; | |
738 | { | |
739 | struct buffer *base; | |
740 | Lisp_Object base_buffer; | |
741 | ||
742 | if (NILP (buffer)) | |
743 | base = current_buffer->base_buffer; | |
744 | else | |
745 | { | |
746 | CHECK_BUFFER (buffer, 0); | |
747 | base = XBUFFER (buffer)->base_buffer; | |
748 | } | |
749 | ||
750 | if (! base) | |
751 | return Qnil; | |
752 | XSETBUFFER (base_buffer, base); | |
753 | return base_buffer; | |
754 | } | |
755 | ||
1ab256cb RM |
756 | DEFUN ("buffer-local-variables", Fbuffer_local_variables, |
757 | Sbuffer_local_variables, 0, 1, 0, | |
758 | "Return an alist of variables that are buffer-local in BUFFER.\n\ | |
553defa4 RS |
759 | Most elements look like (SYMBOL . VALUE), describing one variable.\n\ |
760 | For a symbol that is locally unbound, just the symbol appears in the value.\n\ | |
1ab256cb RM |
761 | Note that storing new VALUEs in these elements doesn't change the variables.\n\ |
762 | No argument or nil as argument means use current buffer as BUFFER.") | |
763 | (buffer) | |
764 | register Lisp_Object buffer; | |
765 | { | |
766 | register struct buffer *buf; | |
553defa4 | 767 | register Lisp_Object result; |
1ab256cb | 768 | |
265a9e55 | 769 | if (NILP (buffer)) |
1ab256cb RM |
770 | buf = current_buffer; |
771 | else | |
772 | { | |
773 | CHECK_BUFFER (buffer, 0); | |
774 | buf = XBUFFER (buffer); | |
775 | } | |
776 | ||
553defa4 RS |
777 | result = Qnil; |
778 | ||
1ab256cb | 779 | { |
553defa4 | 780 | register Lisp_Object tail; |
7539e11f | 781 | for (tail = buf->local_var_alist; CONSP (tail); tail = XCDR (tail)) |
1ab256cb | 782 | { |
553defa4 RS |
783 | Lisp_Object val, elt; |
784 | ||
7539e11f | 785 | elt = XCAR (tail); |
553defa4 | 786 | |
e0585c64 RS |
787 | /* Reference each variable in the alist in buf. |
788 | If inquiring about the current buffer, this gets the current values, | |
789 | so store them into the alist so the alist is up to date. | |
790 | If inquiring about some other buffer, this swaps out any values | |
791 | for that buffer, making the alist up to date automatically. */ | |
7539e11f | 792 | val = find_symbol_value (XCAR (elt)); |
e0585c64 RS |
793 | /* Use the current buffer value only if buf is the current buffer. */ |
794 | if (buf != current_buffer) | |
7539e11f | 795 | val = XCDR (elt); |
553defa4 RS |
796 | |
797 | /* If symbol is unbound, put just the symbol in the list. */ | |
798 | if (EQ (val, Qunbound)) | |
7539e11f | 799 | result = Fcons (XCAR (elt), result); |
553defa4 RS |
800 | /* Otherwise, put (symbol . value) in the list. */ |
801 | else | |
7539e11f | 802 | result = Fcons (Fcons (XCAR (elt), val), result); |
1ab256cb RM |
803 | } |
804 | } | |
805 | ||
1ab256cb RM |
806 | /* Add on all the variables stored in special slots. */ |
807 | { | |
7c02e886 | 808 | int offset, idx; |
1ab256cb | 809 | |
7313acd0 | 810 | for (offset = PER_BUFFER_VAR_OFFSET (name); |
1ab256cb | 811 | offset < sizeof (struct buffer); |
7c02e886 GM |
812 | /* sizeof EMACS_INT == sizeof Lisp_Object */ |
813 | offset += (sizeof (EMACS_INT))) | |
1ab256cb | 814 | { |
7313acd0 GM |
815 | idx = PER_BUFFER_IDX (offset); |
816 | if ((idx == -1 || PER_BUFFER_VALUE_P (buf, idx)) | |
817 | && SYMBOLP (PER_BUFFER_SYMBOL (offset))) | |
818 | result = Fcons (Fcons (PER_BUFFER_SYMBOL (offset), | |
819 | PER_BUFFER_VALUE (buf, offset)), | |
7c02e886 | 820 | result); |
1ab256cb RM |
821 | } |
822 | } | |
553defa4 RS |
823 | |
824 | return result; | |
1ab256cb RM |
825 | } |
826 | ||
827 | \f | |
828 | DEFUN ("buffer-modified-p", Fbuffer_modified_p, Sbuffer_modified_p, | |
829 | 0, 1, 0, | |
830 | "Return t if BUFFER was modified since its file was last read or saved.\n\ | |
831 | No argument or nil as argument means use current buffer as BUFFER.") | |
832 | (buffer) | |
833 | register Lisp_Object buffer; | |
834 | { | |
835 | register struct buffer *buf; | |
265a9e55 | 836 | if (NILP (buffer)) |
1ab256cb RM |
837 | buf = current_buffer; |
838 | else | |
839 | { | |
840 | CHECK_BUFFER (buffer, 0); | |
841 | buf = XBUFFER (buffer); | |
842 | } | |
843 | ||
336cd056 | 844 | return BUF_SAVE_MODIFF (buf) < BUF_MODIFF (buf) ? Qt : Qnil; |
1ab256cb RM |
845 | } |
846 | ||
847 | DEFUN ("set-buffer-modified-p", Fset_buffer_modified_p, Sset_buffer_modified_p, | |
848 | 1, 1, 0, | |
849 | "Mark current buffer as modified or unmodified according to FLAG.\n\ | |
850 | A non-nil FLAG means mark the buffer modified.") | |
851 | (flag) | |
852 | register Lisp_Object flag; | |
853 | { | |
854 | register int already; | |
855 | register Lisp_Object fn; | |
8ec01c70 | 856 | Lisp_Object buffer, window; |
1ab256cb RM |
857 | |
858 | #ifdef CLASH_DETECTION | |
859 | /* If buffer becoming modified, lock the file. | |
860 | If buffer becoming unmodified, unlock the file. */ | |
861 | ||
60f4dd23 | 862 | fn = current_buffer->file_truename; |
90d456d2 KH |
863 | /* Test buffer-file-name so that binding it to nil is effective. */ |
864 | if (!NILP (fn) && ! NILP (current_buffer->filename)) | |
1ab256cb | 865 | { |
336cd056 | 866 | already = SAVE_MODIFF < MODIFF; |
265a9e55 | 867 | if (!already && !NILP (flag)) |
1ab256cb | 868 | lock_file (fn); |
265a9e55 | 869 | else if (already && NILP (flag)) |
1ab256cb RM |
870 | unlock_file (fn); |
871 | } | |
872 | #endif /* CLASH_DETECTION */ | |
873 | ||
336cd056 | 874 | SAVE_MODIFF = NILP (flag) ? MODIFF : 0; |
8ec01c70 GM |
875 | |
876 | /* Set update_mode_lines only if buffer is displayed in some window. | |
877 | Packages like jit-lock or lazy-lock preserve a buffer's modified | |
878 | state by recording/restoring the state around blocks of code. | |
879 | Setting update_mode_lines makes redisplay consider all windows | |
880 | (on all frames). Stealth fontification of buffers not displayed | |
881 | would incur additional redisplay costs if we'd set | |
882 | update_modes_lines unconditionally. | |
883 | ||
884 | Ideally, I think there should be another mechanism for fontifying | |
885 | buffers without "modifying" buffers, or redisplay should be | |
886 | smarter about updating the `*' in mode lines. --gerd */ | |
887 | XSETBUFFER (buffer, current_buffer); | |
888 | window = Fget_buffer_window (buffer, Qt); | |
889 | if (WINDOWP (window)) | |
890 | update_mode_lines++; | |
891 | ||
1ab256cb RM |
892 | return flag; |
893 | } | |
894 | ||
a8c21b48 GM |
895 | DEFUN ("restore-buffer-modified-p", Frestore_buffer_modified_p, |
896 | Srestore_buffer_modified_p, 1, 1, 0, | |
897 | "Like `set-buffer-modified-p', with a differences concerning redisplay.\n\ | |
898 | It is not ensured that mode lines will be updated to show the modified\n\ | |
899 | state of the current buffer. Use with care.") | |
900 | (flag) | |
901 | Lisp_Object flag; | |
902 | { | |
903 | #ifdef CLASH_DETECTION | |
904 | Lisp_Object fn; | |
905 | ||
906 | /* If buffer becoming modified, lock the file. | |
907 | If buffer becoming unmodified, unlock the file. */ | |
908 | ||
909 | fn = current_buffer->file_truename; | |
910 | /* Test buffer-file-name so that binding it to nil is effective. */ | |
911 | if (!NILP (fn) && ! NILP (current_buffer->filename)) | |
912 | { | |
913 | int already = SAVE_MODIFF < MODIFF; | |
914 | if (!already && !NILP (flag)) | |
915 | lock_file (fn); | |
916 | else if (already && NILP (flag)) | |
917 | unlock_file (fn); | |
918 | } | |
919 | #endif /* CLASH_DETECTION */ | |
920 | ||
921 | SAVE_MODIFF = NILP (flag) ? MODIFF : 0; | |
922 | return flag; | |
923 | } | |
924 | ||
1ab256cb RM |
925 | DEFUN ("buffer-modified-tick", Fbuffer_modified_tick, Sbuffer_modified_tick, |
926 | 0, 1, 0, | |
927 | "Return BUFFER's tick counter, incremented for each change in text.\n\ | |
928 | Each buffer has a tick counter which is incremented each time the text in\n\ | |
929 | that buffer is changed. It wraps around occasionally.\n\ | |
930 | No argument or nil as argument means use current buffer as BUFFER.") | |
931 | (buffer) | |
932 | register Lisp_Object buffer; | |
933 | { | |
934 | register struct buffer *buf; | |
265a9e55 | 935 | if (NILP (buffer)) |
1ab256cb RM |
936 | buf = current_buffer; |
937 | else | |
938 | { | |
939 | CHECK_BUFFER (buffer, 0); | |
940 | buf = XBUFFER (buffer); | |
941 | } | |
942 | ||
943 | return make_number (BUF_MODIFF (buf)); | |
944 | } | |
945 | \f | |
01050cb5 | 946 | DEFUN ("rename-buffer", Frename_buffer, Srename_buffer, 1, 2, |
4c7e5f09 | 947 | "sRename buffer (to new name): \nP", |
1ab256cb | 948 | "Change current buffer's name to NEWNAME (a string).\n\ |
3bd779aa | 949 | If second arg UNIQUE is nil or omitted, it is an error if a\n\ |
01050cb5 | 950 | buffer named NEWNAME already exists.\n\ |
3bd779aa | 951 | If UNIQUE is non-nil, come up with a new name using\n\ |
01050cb5 | 952 | `generate-new-buffer-name'.\n\ |
3bd779aa RS |
953 | Interactively, you can set UNIQUE with a prefix argument.\n\ |
954 | We return the name we actually gave the buffer.\n\ | |
1ab256cb | 955 | This does not change the name of the visited file (if any).") |
489c043a RS |
956 | (newname, unique) |
957 | register Lisp_Object newname, unique; | |
1ab256cb RM |
958 | { |
959 | register Lisp_Object tem, buf; | |
960 | ||
489c043a | 961 | CHECK_STRING (newname, 0); |
d59698c4 | 962 | |
489c043a | 963 | if (XSTRING (newname)->size == 0) |
d59698c4 RS |
964 | error ("Empty string is invalid as a buffer name"); |
965 | ||
489c043a | 966 | tem = Fget_buffer (newname); |
265a9e55 | 967 | if (!NILP (tem)) |
01050cb5 | 968 | { |
8801a864 KR |
969 | /* Don't short-circuit if UNIQUE is t. That is a useful way to |
970 | rename the buffer automatically so you can create another | |
971 | with the original name. It makes UNIQUE equivalent to | |
972 | (rename-buffer (generate-new-buffer-name NEWNAME)). */ | |
973 | if (NILP (unique) && XBUFFER (tem) == current_buffer) | |
974 | return current_buffer->name; | |
3bd779aa | 975 | if (!NILP (unique)) |
489c043a | 976 | newname = Fgenerate_new_buffer_name (newname, current_buffer->name); |
01050cb5 | 977 | else |
489c043a | 978 | error ("Buffer name `%s' is in use", XSTRING (newname)->data); |
01050cb5 | 979 | } |
1ab256cb | 980 | |
489c043a | 981 | current_buffer->name = newname; |
76f590d7 JB |
982 | |
983 | /* Catch redisplay's attention. Unless we do this, the mode lines for | |
984 | any windows displaying current_buffer will stay unchanged. */ | |
985 | update_mode_lines++; | |
986 | ||
67180c6a | 987 | XSETBUFFER (buf, current_buffer); |
489c043a | 988 | Fsetcar (Frassq (buf, Vbuffer_alist), newname); |
cf058e49 KH |
989 | if (NILP (current_buffer->filename) |
990 | && !NILP (current_buffer->auto_save_file_name)) | |
1ab256cb | 991 | call0 (intern ("rename-auto-save-file")); |
fb5eba9c RS |
992 | /* Refetch since that last call may have done GC. */ |
993 | return current_buffer->name; | |
1ab256cb RM |
994 | } |
995 | ||
773fbdb9 | 996 | DEFUN ("other-buffer", Fother_buffer, Sother_buffer, 0, 3, 0, |
1ab256cb | 997 | "Return most recently selected buffer other than BUFFER.\n\ |
a0ebb746 JB |
998 | Buffers not visible in windows are preferred to visible buffers,\n\ |
999 | unless optional second argument VISIBLE-OK is non-nil.\n\ | |
97c3c30c RS |
1000 | If the optional third argument FRAME is non-nil, use that frame's\n\ |
1001 | buffer list instead of the selected frame's buffer list.\n\ | |
1ab256cb RM |
1002 | If no other buffer exists, the buffer `*scratch*' is returned.\n\ |
1003 | If BUFFER is omitted or nil, some interesting buffer is returned.") | |
773fbdb9 RS |
1004 | (buffer, visible_ok, frame) |
1005 | register Lisp_Object buffer, visible_ok, frame; | |
1ab256cb | 1006 | { |
89132f25 | 1007 | Lisp_Object Fset_buffer_major_mode (); |
7962a441 | 1008 | register Lisp_Object tail, buf, notsogood, tem, pred, add_ons; |
1ab256cb RM |
1009 | notsogood = Qnil; |
1010 | ||
773fbdb9 | 1011 | if (NILP (frame)) |
9ba9623d | 1012 | frame = selected_frame; |
773fbdb9 | 1013 | |
7962a441 | 1014 | tail = Vbuffer_alist; |
773fbdb9 | 1015 | pred = frame_buffer_predicate (frame); |
7962a441 RS |
1016 | |
1017 | /* Consider buffers that have been seen in the selected frame | |
1018 | before other buffers. */ | |
1019 | ||
773fbdb9 | 1020 | tem = frame_buffer_list (frame); |
7962a441 RS |
1021 | add_ons = Qnil; |
1022 | while (CONSP (tem)) | |
1023 | { | |
7539e11f KR |
1024 | if (BUFFERP (XCAR (tem))) |
1025 | add_ons = Fcons (Fcons (Qnil, XCAR (tem)), add_ons); | |
1026 | tem = XCDR (tem); | |
7962a441 RS |
1027 | } |
1028 | tail = nconc2 (Fnreverse (add_ons), tail); | |
1029 | ||
1030 | for (; !NILP (tail); tail = Fcdr (tail)) | |
1ab256cb RM |
1031 | { |
1032 | buf = Fcdr (Fcar (tail)); | |
1033 | if (EQ (buf, buffer)) | |
1034 | continue; | |
1035 | if (XSTRING (XBUFFER (buf)->name)->data[0] == ' ') | |
1036 | continue; | |
04ae1b48 RS |
1037 | /* If the selected frame has a buffer_predicate, |
1038 | disregard buffers that don't fit the predicate. */ | |
7962a441 | 1039 | if (!NILP (pred)) |
04ae1b48 | 1040 | { |
7962a441 | 1041 | tem = call1 (pred, buf); |
04ae1b48 RS |
1042 | if (NILP (tem)) |
1043 | continue; | |
1044 | } | |
04ae1b48 | 1045 | |
a0ebb746 | 1046 | if (NILP (visible_ok)) |
db732e5a | 1047 | tem = Fget_buffer_window (buf, Qt); |
a0ebb746 JB |
1048 | else |
1049 | tem = Qnil; | |
265a9e55 | 1050 | if (NILP (tem)) |
1ab256cb | 1051 | return buf; |
265a9e55 | 1052 | if (NILP (notsogood)) |
1ab256cb RM |
1053 | notsogood = buf; |
1054 | } | |
265a9e55 | 1055 | if (!NILP (notsogood)) |
1ab256cb | 1056 | return notsogood; |
dba1a30a GM |
1057 | buf = Fget_buffer (build_string ("*scratch*")); |
1058 | if (NILP (buf)) | |
1059 | { | |
1060 | buf = Fget_buffer_create (build_string ("*scratch*")); | |
1061 | Fset_buffer_major_mode (buf); | |
1062 | } | |
89132f25 | 1063 | return buf; |
1ab256cb RM |
1064 | } |
1065 | \f | |
316784fb KH |
1066 | DEFUN ("buffer-disable-undo", Fbuffer_disable_undo, Sbuffer_disable_undo, |
1067 | 0, 1, "", | |
5b8bcf48 RS |
1068 | "Make BUFFER stop keeping undo information.\n\ |
1069 | No argument or nil as argument means do this for the current buffer.") | |
ffd56f97 JB |
1070 | (buffer) |
1071 | register Lisp_Object buffer; | |
1ab256cb | 1072 | { |
ffd56f97 JB |
1073 | Lisp_Object real_buffer; |
1074 | ||
1075 | if (NILP (buffer)) | |
67180c6a | 1076 | XSETBUFFER (real_buffer, current_buffer); |
ffd56f97 JB |
1077 | else |
1078 | { | |
1079 | real_buffer = Fget_buffer (buffer); | |
1080 | if (NILP (real_buffer)) | |
1081 | nsberror (buffer); | |
1082 | } | |
1083 | ||
1084 | XBUFFER (real_buffer)->undo_list = Qt; | |
1085 | ||
1ab256cb RM |
1086 | return Qnil; |
1087 | } | |
1088 | ||
1089 | DEFUN ("buffer-enable-undo", Fbuffer_enable_undo, Sbuffer_enable_undo, | |
1090 | 0, 1, "", | |
1091 | "Start keeping undo information for buffer BUFFER.\n\ | |
1092 | No argument or nil as argument means do this for the current buffer.") | |
ffd56f97 JB |
1093 | (buffer) |
1094 | register Lisp_Object buffer; | |
1ab256cb | 1095 | { |
ffd56f97 | 1096 | Lisp_Object real_buffer; |
1ab256cb | 1097 | |
ffd56f97 | 1098 | if (NILP (buffer)) |
67180c6a | 1099 | XSETBUFFER (real_buffer, current_buffer); |
1ab256cb RM |
1100 | else |
1101 | { | |
ffd56f97 JB |
1102 | real_buffer = Fget_buffer (buffer); |
1103 | if (NILP (real_buffer)) | |
1104 | nsberror (buffer); | |
1ab256cb RM |
1105 | } |
1106 | ||
ffd56f97 JB |
1107 | if (EQ (XBUFFER (real_buffer)->undo_list, Qt)) |
1108 | XBUFFER (real_buffer)->undo_list = Qnil; | |
1ab256cb RM |
1109 | |
1110 | return Qnil; | |
1111 | } | |
1112 | ||
1113 | /* | |
1114 | DEFVAR_LISP ("kill-buffer-hook", no_cell, "\ | |
1115 | Hook to be run (by `run-hooks', which see) when a buffer is killed.\n\ | |
1116 | The buffer being killed will be current while the hook is running.\n\ | |
1117 | See `kill-buffer'." | |
1118 | */ | |
1119 | DEFUN ("kill-buffer", Fkill_buffer, Skill_buffer, 1, 1, "bKill buffer: ", | |
1120 | "Kill the buffer BUFFER.\n\ | |
1121 | The argument may be a buffer or may be the name of a buffer.\n\ | |
1122 | An argument of nil means kill the current buffer.\n\n\ | |
1123 | Value is t if the buffer is actually killed, nil if user says no.\n\n\ | |
1124 | The value of `kill-buffer-hook' (which may be local to that buffer),\n\ | |
1125 | if not void, is a list of functions to be called, with no arguments,\n\ | |
1126 | before the buffer is actually killed. The buffer to be killed is current\n\ | |
1127 | when the hook functions are called.\n\n\ | |
1128 | Any processes that have this buffer as the `process-buffer' are killed\n\ | |
b64d7442 | 1129 | with SIGHUP.") |
a25f13ae KH |
1130 | (buffer) |
1131 | Lisp_Object buffer; | |
1ab256cb RM |
1132 | { |
1133 | Lisp_Object buf; | |
1134 | register struct buffer *b; | |
1135 | register Lisp_Object tem; | |
1136 | register struct Lisp_Marker *m; | |
6af718a4 | 1137 | struct gcpro gcpro1; |
1ab256cb | 1138 | |
a25f13ae | 1139 | if (NILP (buffer)) |
1ab256cb RM |
1140 | buf = Fcurrent_buffer (); |
1141 | else | |
a25f13ae | 1142 | buf = Fget_buffer (buffer); |
265a9e55 | 1143 | if (NILP (buf)) |
a25f13ae | 1144 | nsberror (buffer); |
1ab256cb RM |
1145 | |
1146 | b = XBUFFER (buf); | |
1147 | ||
4a4a9db5 KH |
1148 | /* Avoid trouble for buffer already dead. */ |
1149 | if (NILP (b->name)) | |
1150 | return Qnil; | |
1151 | ||
1ab256cb | 1152 | /* Query if the buffer is still modified. */ |
265a9e55 | 1153 | if (INTERACTIVE && !NILP (b->filename) |
336cd056 | 1154 | && BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) |
1ab256cb | 1155 | { |
a25f13ae | 1156 | GCPRO1 (buf); |
1ab256cb RM |
1157 | tem = do_yes_or_no_p (format1 ("Buffer %s modified; kill anyway? ", |
1158 | XSTRING (b->name)->data)); | |
1159 | UNGCPRO; | |
265a9e55 | 1160 | if (NILP (tem)) |
1ab256cb RM |
1161 | return Qnil; |
1162 | } | |
1163 | ||
dcdffbf6 | 1164 | /* Run hooks with the buffer to be killed the current buffer. */ |
1ab256cb | 1165 | { |
1ab256cb | 1166 | int count = specpdl_ptr - specpdl; |
dcdffbf6 | 1167 | Lisp_Object list; |
1ab256cb RM |
1168 | |
1169 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1170 | set_buffer_internal (b); | |
dcdffbf6 RS |
1171 | |
1172 | /* First run the query functions; if any query is answered no, | |
1173 | don't kill the buffer. */ | |
1174 | for (list = Vkill_buffer_query_functions; !NILP (list); list = Fcdr (list)) | |
1175 | { | |
1176 | tem = call0 (Fcar (list)); | |
1177 | if (NILP (tem)) | |
1178 | return unbind_to (count, Qnil); | |
1179 | } | |
1180 | ||
1181 | /* Then run the hooks. */ | |
fd186f07 RS |
1182 | if (!NILP (Vrun_hooks)) |
1183 | call1 (Vrun_hooks, Qkill_buffer_hook); | |
1ab256cb RM |
1184 | unbind_to (count, Qnil); |
1185 | } | |
1186 | ||
1187 | /* We have no more questions to ask. Verify that it is valid | |
1188 | to kill the buffer. This must be done after the questions | |
1189 | since anything can happen within do_yes_or_no_p. */ | |
1190 | ||
1191 | /* Don't kill the minibuffer now current. */ | |
1192 | if (EQ (buf, XWINDOW (minibuf_window)->buffer)) | |
1193 | return Qnil; | |
1194 | ||
265a9e55 | 1195 | if (NILP (b->name)) |
1ab256cb RM |
1196 | return Qnil; |
1197 | ||
336cd056 RS |
1198 | /* When we kill a base buffer, kill all its indirect buffers. |
1199 | We do it at this stage so nothing terrible happens if they | |
1200 | ask questions or their hooks get errors. */ | |
1201 | if (! b->base_buffer) | |
1202 | { | |
1203 | struct buffer *other; | |
1204 | ||
1205 | GCPRO1 (buf); | |
1206 | ||
1207 | for (other = all_buffers; other; other = other->next) | |
4a4a9db5 KH |
1208 | /* all_buffers contains dead buffers too; |
1209 | don't re-kill them. */ | |
1210 | if (other->base_buffer == b && !NILP (other->name)) | |
336cd056 RS |
1211 | { |
1212 | Lisp_Object buf; | |
1213 | XSETBUFFER (buf, other); | |
1214 | Fkill_buffer (buf); | |
1215 | } | |
1216 | ||
1217 | UNGCPRO; | |
1218 | } | |
1219 | ||
1ab256cb RM |
1220 | /* Make this buffer not be current. |
1221 | In the process, notice if this is the sole visible buffer | |
1222 | and give up if so. */ | |
1223 | if (b == current_buffer) | |
1224 | { | |
773fbdb9 | 1225 | tem = Fother_buffer (buf, Qnil, Qnil); |
1ab256cb RM |
1226 | Fset_buffer (tem); |
1227 | if (b == current_buffer) | |
1228 | return Qnil; | |
1229 | } | |
1230 | ||
1231 | /* Now there is no question: we can kill the buffer. */ | |
1232 | ||
1233 | #ifdef CLASH_DETECTION | |
1234 | /* Unlock this buffer's file, if it is locked. */ | |
1235 | unlock_buffer (b); | |
1236 | #endif /* CLASH_DETECTION */ | |
1237 | ||
1ab256cb | 1238 | kill_buffer_processes (buf); |
1ab256cb RM |
1239 | |
1240 | tem = Vinhibit_quit; | |
1241 | Vinhibit_quit = Qt; | |
00550f94 | 1242 | replace_buffer_in_all_windows (buf); |
b26dd9cb | 1243 | Vbuffer_alist = Fdelq (Frassq (buf, Vbuffer_alist), Vbuffer_alist); |
7962a441 | 1244 | frames_discard_buffer (buf); |
1ab256cb RM |
1245 | Vinhibit_quit = tem; |
1246 | ||
9b59d6d0 | 1247 | /* Delete any auto-save file, if we saved it in this session. */ |
a7a60ce9 | 1248 | if (STRINGP (b->auto_save_file_name) |
e95a0b39 | 1249 | && b->auto_save_modified != 0 |
30e0071c | 1250 | && BUF_SAVE_MODIFF (b) < b->auto_save_modified) |
1ab256cb RM |
1251 | { |
1252 | Lisp_Object tem; | |
1253 | tem = Fsymbol_value (intern ("delete-auto-save-files")); | |
265a9e55 | 1254 | if (! NILP (tem)) |
cbb6a418 | 1255 | internal_delete_file (b->auto_save_file_name); |
1ab256cb RM |
1256 | } |
1257 | ||
4a4a9db5 KH |
1258 | if (b->base_buffer) |
1259 | { | |
1260 | /* Unchain all markers that belong to this indirect buffer. | |
1261 | Don't unchain the markers that belong to the base buffer | |
1262 | or its other indirect buffers. */ | |
1263 | for (tem = BUF_MARKERS (b); !NILP (tem); ) | |
1264 | { | |
1265 | Lisp_Object next; | |
1266 | m = XMARKER (tem); | |
1267 | next = m->chain; | |
1268 | if (m->buffer == b) | |
1269 | unchain_marker (tem); | |
1270 | tem = next; | |
1271 | } | |
1272 | } | |
1273 | else | |
1ab256cb | 1274 | { |
4a4a9db5 | 1275 | /* Unchain all markers of this buffer and its indirect buffers. |
336cd056 | 1276 | and leave them pointing nowhere. */ |
4a4a9db5 | 1277 | for (tem = BUF_MARKERS (b); !NILP (tem); ) |
336cd056 RS |
1278 | { |
1279 | m = XMARKER (tem); | |
1280 | m->buffer = 0; | |
1281 | tem = m->chain; | |
1282 | m->chain = Qnil; | |
1283 | } | |
1284 | BUF_MARKERS (b) = Qnil; | |
336cd056 | 1285 | BUF_INTERVALS (b) = NULL_INTERVAL; |
336cd056 RS |
1286 | |
1287 | /* Perhaps we should explicitly free the interval tree here... */ | |
1288 | } | |
33f7013e | 1289 | |
2f3f993b RS |
1290 | /* Reset the local variables, so that this buffer's local values |
1291 | won't be protected from GC. They would be protected | |
1292 | if they happened to remain encached in their symbols. | |
1293 | This gets rid of them for certain. */ | |
1294 | swap_out_buffer_local_variables (b); | |
13de9290 | 1295 | reset_buffer_local_variables (b, 1); |
2f3f993b | 1296 | |
1ab256cb | 1297 | b->name = Qnil; |
336cd056 | 1298 | |
9ac0d9e0 | 1299 | BLOCK_INPUT; |
336cd056 RS |
1300 | if (! b->base_buffer) |
1301 | BUFFER_FREE (BUF_BEG_ADDR (b)); | |
1302 | ||
28e969dd JB |
1303 | if (b->newline_cache) |
1304 | { | |
1305 | free_region_cache (b->newline_cache); | |
1306 | b->newline_cache = 0; | |
1307 | } | |
1308 | if (b->width_run_cache) | |
1309 | { | |
1310 | free_region_cache (b->width_run_cache); | |
1311 | b->width_run_cache = 0; | |
1312 | } | |
1313 | b->width_table = Qnil; | |
9ac0d9e0 | 1314 | UNBLOCK_INPUT; |
1ab256cb RM |
1315 | b->undo_list = Qnil; |
1316 | ||
1317 | return Qt; | |
1318 | } | |
1319 | \f | |
36a8c287 JB |
1320 | /* Move the assoc for buffer BUF to the front of buffer-alist. Since |
1321 | we do this each time BUF is selected visibly, the more recently | |
1322 | selected buffers are always closer to the front of the list. This | |
1323 | means that other_buffer is more likely to choose a relevant buffer. */ | |
1ab256cb | 1324 | |
01136e9b | 1325 | void |
1ab256cb RM |
1326 | record_buffer (buf) |
1327 | Lisp_Object buf; | |
1328 | { | |
1329 | register Lisp_Object link, prev; | |
773fbdb9 | 1330 | Lisp_Object frame; |
9ba9623d | 1331 | frame = selected_frame; |
1ab256cb RM |
1332 | |
1333 | prev = Qnil; | |
7539e11f | 1334 | for (link = Vbuffer_alist; CONSP (link); link = XCDR (link)) |
1ab256cb | 1335 | { |
7539e11f | 1336 | if (EQ (XCDR (XCAR (link)), buf)) |
1ab256cb RM |
1337 | break; |
1338 | prev = link; | |
1339 | } | |
1340 | ||
36a8c287 JB |
1341 | /* Effectively do Vbuffer_alist = Fdelq (link, Vbuffer_alist); |
1342 | we cannot use Fdelq itself here because it allows quitting. */ | |
1ab256cb | 1343 | |
265a9e55 | 1344 | if (NILP (prev)) |
7539e11f | 1345 | Vbuffer_alist = XCDR (Vbuffer_alist); |
1ab256cb | 1346 | else |
7539e11f | 1347 | XCDR (prev) = XCDR (XCDR (prev)); |
1ab256cb | 1348 | |
7539e11f | 1349 | XCDR (link) = Vbuffer_alist; |
1ab256cb | 1350 | Vbuffer_alist = link; |
7962a441 RS |
1351 | |
1352 | /* Now move this buffer to the front of frame_buffer_list also. */ | |
1353 | ||
1354 | prev = Qnil; | |
773fbdb9 | 1355 | for (link = frame_buffer_list (frame); CONSP (link); |
7539e11f | 1356 | link = XCDR (link)) |
7962a441 | 1357 | { |
7539e11f | 1358 | if (EQ (XCAR (link), buf)) |
7962a441 RS |
1359 | break; |
1360 | prev = link; | |
1361 | } | |
1362 | ||
1363 | /* Effectively do delq. */ | |
1364 | ||
1365 | if (CONSP (link)) | |
1366 | { | |
1367 | if (NILP (prev)) | |
773fbdb9 | 1368 | set_frame_buffer_list (frame, |
7539e11f | 1369 | XCDR (frame_buffer_list (frame))); |
7962a441 | 1370 | else |
7539e11f | 1371 | XCDR (prev) = XCDR (XCDR (prev)); |
7962a441 | 1372 | |
7539e11f | 1373 | XCDR (link) = frame_buffer_list (frame); |
773fbdb9 | 1374 | set_frame_buffer_list (frame, link); |
7962a441 RS |
1375 | } |
1376 | else | |
773fbdb9 | 1377 | set_frame_buffer_list (frame, Fcons (buf, frame_buffer_list (frame))); |
1ab256cb RM |
1378 | } |
1379 | ||
a9ee7a59 KH |
1380 | DEFUN ("set-buffer-major-mode", Fset_buffer_major_mode, Sset_buffer_major_mode, 1, 1, 0, |
1381 | "Set an appropriate major mode for BUFFER, according to `default-major-mode'.\n\ | |
1382 | Use this function before selecting the buffer, since it may need to inspect\n\ | |
1383 | the current buffer's major mode.") | |
a2428fa2 EN |
1384 | (buffer) |
1385 | Lisp_Object buffer; | |
a9ee7a59 KH |
1386 | { |
1387 | int count; | |
1388 | Lisp_Object function; | |
1389 | ||
1390 | function = buffer_defaults.major_mode; | |
1391 | if (NILP (function) && NILP (Fget (current_buffer->major_mode, Qmode_class))) | |
1392 | function = current_buffer->major_mode; | |
1393 | ||
1394 | if (NILP (function) || EQ (function, Qfundamental_mode)) | |
1395 | return Qnil; | |
1396 | ||
1397 | count = specpdl_ptr - specpdl; | |
1398 | ||
1399 | /* To select a nonfundamental mode, | |
1400 | select the buffer temporarily and then call the mode function. */ | |
1401 | ||
1402 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1403 | ||
a2428fa2 | 1404 | Fset_buffer (buffer); |
a9ee7a59 KH |
1405 | call0 (function); |
1406 | ||
1407 | return unbind_to (count, Qnil); | |
1408 | } | |
1409 | ||
2594e0fd RS |
1410 | /* If switching buffers in WINDOW would be an error, return |
1411 | a C string saying what the error would be. */ | |
1412 | ||
1413 | char * | |
1414 | no_switch_window (window) | |
1415 | Lisp_Object window; | |
1ab256cb | 1416 | { |
1ab256cb | 1417 | Lisp_Object tem; |
2594e0fd RS |
1418 | if (EQ (minibuf_window, window)) |
1419 | return "Cannot switch buffers in minibuffer window"; | |
1420 | tem = Fwindow_dedicated_p (window); | |
265a9e55 | 1421 | if (!NILP (tem)) |
2594e0fd RS |
1422 | return "Cannot switch buffers in a dedicated window"; |
1423 | return NULL; | |
1424 | } | |
1425 | ||
1426 | /* Switch to buffer BUFFER in the selected window. | |
1427 | If NORECORD is non-nil, don't call record_buffer. */ | |
1428 | ||
1429 | Lisp_Object | |
1430 | switch_to_buffer_1 (buffer, norecord) | |
1431 | Lisp_Object buffer, norecord; | |
1432 | { | |
1433 | register Lisp_Object buf; | |
1ab256cb | 1434 | |
a25f13ae | 1435 | if (NILP (buffer)) |
773fbdb9 | 1436 | buf = Fother_buffer (Fcurrent_buffer (), Qnil, Qnil); |
1ab256cb | 1437 | else |
a9ee7a59 | 1438 | { |
a25f13ae | 1439 | buf = Fget_buffer (buffer); |
a9ee7a59 KH |
1440 | if (NILP (buf)) |
1441 | { | |
a25f13ae | 1442 | buf = Fget_buffer_create (buffer); |
a9ee7a59 KH |
1443 | Fset_buffer_major_mode (buf); |
1444 | } | |
1445 | } | |
1ab256cb | 1446 | Fset_buffer (buf); |
265a9e55 | 1447 | if (NILP (norecord)) |
1ab256cb RM |
1448 | record_buffer (buf); |
1449 | ||
1450 | Fset_window_buffer (EQ (selected_window, minibuf_window) | |
5fcd022d JB |
1451 | ? Fnext_window (minibuf_window, Qnil, Qnil) |
1452 | : selected_window, | |
1ab256cb RM |
1453 | buf); |
1454 | ||
cd0c235a | 1455 | return buf; |
1ab256cb RM |
1456 | } |
1457 | ||
2594e0fd RS |
1458 | DEFUN ("switch-to-buffer", Fswitch_to_buffer, Sswitch_to_buffer, 1, 2, "BSwitch to buffer: ", |
1459 | "Select buffer BUFFER in the current window.\n\ | |
1460 | BUFFER may be a buffer or a buffer name.\n\ | |
1461 | Optional second arg NORECORD non-nil means\n\ | |
1462 | do not put this buffer at the front of the list of recently selected ones.\n\ | |
1463 | \n\ | |
1464 | WARNING: This is NOT the way to work on another buffer temporarily\n\ | |
1465 | within a Lisp program! Use `set-buffer' instead. That avoids messing with\n\ | |
1466 | the window-buffer correspondences.") | |
1467 | (buffer, norecord) | |
1468 | Lisp_Object buffer, norecord; | |
1469 | { | |
1470 | char *err; | |
1471 | ||
1472 | err = no_switch_window (selected_window); | |
1473 | if (err) error (err); | |
1474 | ||
1475 | return switch_to_buffer_1 (buffer, norecord); | |
1476 | } | |
1477 | ||
cd0c235a | 1478 | DEFUN ("pop-to-buffer", Fpop_to_buffer, Spop_to_buffer, 1, 3, 0, |
1ab256cb RM |
1479 | "Select buffer BUFFER in some window, preferably a different one.\n\ |
1480 | If BUFFER is nil, then some other buffer is chosen.\n\ | |
1481 | If `pop-up-windows' is non-nil, windows can be split to do this.\n\ | |
1482 | If optional second arg OTHER-WINDOW is non-nil, insist on finding another\n\ | |
405615e5 RS |
1483 | window even if BUFFER is already visible in the selected window.\n\ |
1484 | This uses the function `display-buffer' as a subroutine; see the documentation\n\ | |
6d12711f RS |
1485 | of `display-buffer' for additional customization information.\n\ |
1486 | \n\ | |
1487 | Optional third arg NORECORD non-nil means\n\ | |
1488 | do not put this buffer at the front of the list of recently selected ones.") | |
1489 | (buffer, other_window, norecord) | |
1490 | Lisp_Object buffer, other_window, norecord; | |
1ab256cb RM |
1491 | { |
1492 | register Lisp_Object buf; | |
a25f13ae | 1493 | if (NILP (buffer)) |
773fbdb9 | 1494 | buf = Fother_buffer (Fcurrent_buffer (), Qnil, Qnil); |
1ab256cb | 1495 | else |
7c2087ee | 1496 | { |
a25f13ae | 1497 | buf = Fget_buffer (buffer); |
7c2087ee RS |
1498 | if (NILP (buf)) |
1499 | { | |
a25f13ae | 1500 | buf = Fget_buffer_create (buffer); |
7c2087ee RS |
1501 | Fset_buffer_major_mode (buf); |
1502 | } | |
1503 | } | |
1ab256cb | 1504 | Fset_buffer (buf); |
6d12711f RS |
1505 | if (NILP (norecord)) |
1506 | record_buffer (buf); | |
6b17d756 | 1507 | Fselect_window (Fdisplay_buffer (buf, other_window, Qnil)); |
e8b3a22d | 1508 | return buf; |
1ab256cb RM |
1509 | } |
1510 | ||
1511 | DEFUN ("current-buffer", Fcurrent_buffer, Scurrent_buffer, 0, 0, 0, | |
1512 | "Return the current buffer as a Lisp object.") | |
1513 | () | |
1514 | { | |
1515 | register Lisp_Object buf; | |
67180c6a | 1516 | XSETBUFFER (buf, current_buffer); |
1ab256cb RM |
1517 | return buf; |
1518 | } | |
1519 | \f | |
7ec44ec6 GM |
1520 | /* Set the current buffer to B. |
1521 | ||
1522 | We previously set windows_or_buffers_changed here to invalidate | |
1523 | global unchanged information in beg_unchanged and end_unchanged. | |
1524 | This is no longer necessary because we now compute unchanged | |
1525 | information on a buffer-basis. Every action affecting other | |
1526 | windows than the selected one requires a select_window at some | |
1527 | time, and that increments windows_or_buffers_changed. */ | |
1ab256cb RM |
1528 | |
1529 | void | |
1530 | set_buffer_internal (b) | |
1531 | register struct buffer *b; | |
1532 | { | |
b5a225b4 | 1533 | if (current_buffer != b) |
7ec44ec6 | 1534 | set_buffer_internal_1 (b); |
c7aa5005 KH |
1535 | } |
1536 | ||
1537 | /* Set the current buffer to B, and do not set windows_or_buffers_changed. | |
1538 | This is used by redisplay. */ | |
1539 | ||
1540 | void | |
1541 | set_buffer_internal_1 (b) | |
1542 | register struct buffer *b; | |
1543 | { | |
1544 | register struct buffer *old_buf; | |
1545 | register Lisp_Object tail, valcontents; | |
1546 | Lisp_Object tem; | |
1547 | ||
1548 | if (current_buffer == b) | |
1549 | return; | |
1550 | ||
1ab256cb RM |
1551 | old_buf = current_buffer; |
1552 | current_buffer = b; | |
1553 | last_known_column_point = -1; /* invalidate indentation cache */ | |
1554 | ||
336cd056 RS |
1555 | if (old_buf) |
1556 | { | |
1557 | /* Put the undo list back in the base buffer, so that it appears | |
1558 | that an indirect buffer shares the undo list of its base. */ | |
1559 | if (old_buf->base_buffer) | |
1560 | old_buf->base_buffer->undo_list = old_buf->undo_list; | |
1561 | ||
1562 | /* If the old current buffer has markers to record PT, BEGV and ZV | |
1563 | when it is not current, update them now. */ | |
1564 | if (! NILP (old_buf->pt_marker)) | |
1565 | { | |
1566 | Lisp_Object obuf; | |
1567 | XSETBUFFER (obuf, old_buf); | |
3f236a40 RS |
1568 | set_marker_both (old_buf->pt_marker, obuf, |
1569 | BUF_PT (old_buf), BUF_PT_BYTE (old_buf)); | |
336cd056 RS |
1570 | } |
1571 | if (! NILP (old_buf->begv_marker)) | |
1572 | { | |
1573 | Lisp_Object obuf; | |
1574 | XSETBUFFER (obuf, old_buf); | |
3f236a40 RS |
1575 | set_marker_both (old_buf->begv_marker, obuf, |
1576 | BUF_BEGV (old_buf), BUF_BEGV_BYTE (old_buf)); | |
336cd056 RS |
1577 | } |
1578 | if (! NILP (old_buf->zv_marker)) | |
1579 | { | |
1580 | Lisp_Object obuf; | |
1581 | XSETBUFFER (obuf, old_buf); | |
3f236a40 RS |
1582 | set_marker_both (old_buf->zv_marker, obuf, |
1583 | BUF_ZV (old_buf), BUF_ZV_BYTE (old_buf)); | |
336cd056 RS |
1584 | } |
1585 | } | |
1586 | ||
1587 | /* Get the undo list from the base buffer, so that it appears | |
1588 | that an indirect buffer shares the undo list of its base. */ | |
1589 | if (b->base_buffer) | |
1590 | b->undo_list = b->base_buffer->undo_list; | |
1591 | ||
1592 | /* If the new current buffer has markers to record PT, BEGV and ZV | |
1593 | when it is not current, fetch them now. */ | |
1594 | if (! NILP (b->pt_marker)) | |
3f236a40 RS |
1595 | { |
1596 | BUF_PT (b) = marker_position (b->pt_marker); | |
1597 | BUF_PT_BYTE (b) = marker_byte_position (b->pt_marker); | |
1598 | } | |
336cd056 | 1599 | if (! NILP (b->begv_marker)) |
3f236a40 RS |
1600 | { |
1601 | BUF_BEGV (b) = marker_position (b->begv_marker); | |
1602 | BUF_BEGV_BYTE (b) = marker_byte_position (b->begv_marker); | |
1603 | } | |
336cd056 | 1604 | if (! NILP (b->zv_marker)) |
3f236a40 RS |
1605 | { |
1606 | BUF_ZV (b) = marker_position (b->zv_marker); | |
1607 | BUF_ZV_BYTE (b) = marker_byte_position (b->zv_marker); | |
1608 | } | |
336cd056 | 1609 | |
1ab256cb RM |
1610 | /* Look down buffer's list of local Lisp variables |
1611 | to find and update any that forward into C variables. */ | |
1612 | ||
7539e11f | 1613 | for (tail = b->local_var_alist; !NILP (tail); tail = XCDR (tail)) |
1ab256cb | 1614 | { |
7539e11f | 1615 | valcontents = XSYMBOL (XCAR (XCAR (tail)))->value; |
a7a60ce9 KH |
1616 | if ((BUFFER_LOCAL_VALUEP (valcontents) |
1617 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
3d871c85 | 1618 | && (tem = XBUFFER_LOCAL_VALUE (valcontents)->realvalue, |
a7a60ce9 | 1619 | (BOOLFWDP (tem) || INTFWDP (tem) || OBJFWDP (tem)))) |
1ab256cb RM |
1620 | /* Just reference the variable |
1621 | to cause it to become set for this buffer. */ | |
7539e11f | 1622 | Fsymbol_value (XCAR (XCAR (tail))); |
1ab256cb RM |
1623 | } |
1624 | ||
1625 | /* Do the same with any others that were local to the previous buffer */ | |
1626 | ||
1627 | if (old_buf) | |
7539e11f | 1628 | for (tail = old_buf->local_var_alist; !NILP (tail); tail = XCDR (tail)) |
1ab256cb | 1629 | { |
7539e11f | 1630 | valcontents = XSYMBOL (XCAR (XCAR (tail)))->value; |
a7a60ce9 KH |
1631 | if ((BUFFER_LOCAL_VALUEP (valcontents) |
1632 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
3d871c85 | 1633 | && (tem = XBUFFER_LOCAL_VALUE (valcontents)->realvalue, |
a7a60ce9 | 1634 | (BOOLFWDP (tem) || INTFWDP (tem) || OBJFWDP (tem)))) |
1ab256cb RM |
1635 | /* Just reference the variable |
1636 | to cause it to become set for this buffer. */ | |
7539e11f | 1637 | Fsymbol_value (XCAR (XCAR (tail))); |
1ab256cb RM |
1638 | } |
1639 | } | |
1640 | ||
336cd056 | 1641 | /* Switch to buffer B temporarily for redisplay purposes. |
bbbe9545 | 1642 | This avoids certain things that don't need to be done within redisplay. */ |
336cd056 RS |
1643 | |
1644 | void | |
1645 | set_buffer_temp (b) | |
1646 | struct buffer *b; | |
1647 | { | |
1648 | register struct buffer *old_buf; | |
1649 | ||
1650 | if (current_buffer == b) | |
1651 | return; | |
1652 | ||
1653 | old_buf = current_buffer; | |
1654 | current_buffer = b; | |
1655 | ||
1656 | if (old_buf) | |
1657 | { | |
1658 | /* If the old current buffer has markers to record PT, BEGV and ZV | |
1659 | when it is not current, update them now. */ | |
1660 | if (! NILP (old_buf->pt_marker)) | |
1661 | { | |
1662 | Lisp_Object obuf; | |
1663 | XSETBUFFER (obuf, old_buf); | |
3f236a40 RS |
1664 | set_marker_both (old_buf->pt_marker, obuf, |
1665 | BUF_PT (old_buf), BUF_PT_BYTE (old_buf)); | |
336cd056 RS |
1666 | } |
1667 | if (! NILP (old_buf->begv_marker)) | |
1668 | { | |
1669 | Lisp_Object obuf; | |
1670 | XSETBUFFER (obuf, old_buf); | |
3f236a40 RS |
1671 | set_marker_both (old_buf->begv_marker, obuf, |
1672 | BUF_BEGV (old_buf), BUF_BEGV_BYTE (old_buf)); | |
336cd056 RS |
1673 | } |
1674 | if (! NILP (old_buf->zv_marker)) | |
1675 | { | |
1676 | Lisp_Object obuf; | |
1677 | XSETBUFFER (obuf, old_buf); | |
3f236a40 RS |
1678 | set_marker_both (old_buf->zv_marker, obuf, |
1679 | BUF_ZV (old_buf), BUF_ZV_BYTE (old_buf)); | |
336cd056 RS |
1680 | } |
1681 | } | |
1682 | ||
1683 | /* If the new current buffer has markers to record PT, BEGV and ZV | |
1684 | when it is not current, fetch them now. */ | |
1685 | if (! NILP (b->pt_marker)) | |
3f236a40 RS |
1686 | { |
1687 | BUF_PT (b) = marker_position (b->pt_marker); | |
1688 | BUF_PT_BYTE (b) = marker_byte_position (b->pt_marker); | |
1689 | } | |
336cd056 | 1690 | if (! NILP (b->begv_marker)) |
3f236a40 RS |
1691 | { |
1692 | BUF_BEGV (b) = marker_position (b->begv_marker); | |
1693 | BUF_BEGV_BYTE (b) = marker_byte_position (b->begv_marker); | |
1694 | } | |
336cd056 | 1695 | if (! NILP (b->zv_marker)) |
3f236a40 RS |
1696 | { |
1697 | BUF_ZV (b) = marker_position (b->zv_marker); | |
1698 | BUF_ZV_BYTE (b) = marker_byte_position (b->zv_marker); | |
1699 | } | |
336cd056 RS |
1700 | } |
1701 | ||
1ab256cb RM |
1702 | DEFUN ("set-buffer", Fset_buffer, Sset_buffer, 1, 1, 0, |
1703 | "Make the buffer BUFFER current for editing operations.\n\ | |
1704 | BUFFER may be a buffer or the name of an existing buffer.\n\ | |
1705 | See also `save-excursion' when you want to make a buffer current temporarily.\n\ | |
1706 | This function does not display the buffer, so its effect ends\n\ | |
1707 | when the current command terminates.\n\ | |
1708 | Use `switch-to-buffer' or `pop-to-buffer' to switch buffers permanently.") | |
a25f13ae KH |
1709 | (buffer) |
1710 | register Lisp_Object buffer; | |
1ab256cb | 1711 | { |
a25f13ae KH |
1712 | register Lisp_Object buf; |
1713 | buf = Fget_buffer (buffer); | |
1714 | if (NILP (buf)) | |
1715 | nsberror (buffer); | |
1716 | if (NILP (XBUFFER (buf)->name)) | |
1ab256cb | 1717 | error ("Selecting deleted buffer"); |
a25f13ae KH |
1718 | set_buffer_internal (XBUFFER (buf)); |
1719 | return buf; | |
1ab256cb | 1720 | } |
d0628b06 RS |
1721 | |
1722 | /* Set the current buffer to BUFFER provided it is alive. */ | |
1723 | ||
1724 | Lisp_Object | |
1725 | set_buffer_if_live (buffer) | |
1726 | Lisp_Object buffer; | |
1727 | { | |
1728 | if (! NILP (XBUFFER (buffer)->name)) | |
1729 | Fset_buffer (buffer); | |
1730 | return Qnil; | |
1731 | } | |
1ab256cb RM |
1732 | \f |
1733 | DEFUN ("barf-if-buffer-read-only", Fbarf_if_buffer_read_only, | |
1734 | Sbarf_if_buffer_read_only, 0, 0, 0, | |
1735 | "Signal a `buffer-read-only' error if the current buffer is read-only.") | |
1736 | () | |
1737 | { | |
a96b68f1 RS |
1738 | if (!NILP (current_buffer->read_only) |
1739 | && NILP (Vinhibit_read_only)) | |
1ab256cb RM |
1740 | Fsignal (Qbuffer_read_only, (Fcons (Fcurrent_buffer (), Qnil))); |
1741 | return Qnil; | |
1742 | } | |
1743 | ||
1744 | DEFUN ("bury-buffer", Fbury_buffer, Sbury_buffer, 0, 1, "", | |
1745 | "Put BUFFER at the end of the list of all buffers.\n\ | |
1746 | There it is the least likely candidate for `other-buffer' to return;\n\ | |
528415e7 | 1747 | thus, the least likely buffer for \\[switch-to-buffer] to select by default.\n\ |
a5611885 JB |
1748 | If BUFFER is nil or omitted, bury the current buffer.\n\ |
1749 | Also, if BUFFER is nil or omitted, remove the current buffer from the\n\ | |
1750 | selected window if it is displayed there.") | |
a2428fa2 EN |
1751 | (buffer) |
1752 | register Lisp_Object buffer; | |
1ab256cb | 1753 | { |
b271272a | 1754 | /* Figure out what buffer we're going to bury. */ |
a2428fa2 | 1755 | if (NILP (buffer)) |
a5611885 | 1756 | { |
a2428fa2 | 1757 | XSETBUFFER (buffer, current_buffer); |
0a63b212 RS |
1758 | |
1759 | /* If we're burying the current buffer, unshow it. */ | |
773fbdb9 | 1760 | Fswitch_to_buffer (Fother_buffer (buffer, Qnil, Qnil), Qnil); |
a5611885 | 1761 | } |
1ab256cb RM |
1762 | else |
1763 | { | |
1764 | Lisp_Object buf1; | |
1765 | ||
a2428fa2 | 1766 | buf1 = Fget_buffer (buffer); |
265a9e55 | 1767 | if (NILP (buf1)) |
a2428fa2 EN |
1768 | nsberror (buffer); |
1769 | buffer = buf1; | |
b271272a JB |
1770 | } |
1771 | ||
a1a8b28e GM |
1772 | /* Move buffer to the end of the buffer list. Do nothing if the |
1773 | buffer is killed. */ | |
1774 | if (!NILP (XBUFFER (buffer)->name)) | |
1775 | { | |
1776 | Lisp_Object aelt, link; | |
b271272a | 1777 | |
a1a8b28e GM |
1778 | aelt = Frassq (buffer, Vbuffer_alist); |
1779 | link = Fmemq (aelt, Vbuffer_alist); | |
1780 | Vbuffer_alist = Fdelq (aelt, Vbuffer_alist); | |
1781 | XCDR (link) = Qnil; | |
1782 | Vbuffer_alist = nconc2 (Vbuffer_alist, link); | |
1ab256cb | 1783 | |
a1a8b28e GM |
1784 | frames_bury_buffer (buffer); |
1785 | } | |
dec989eb | 1786 | |
1ab256cb RM |
1787 | return Qnil; |
1788 | } | |
1789 | \f | |
c922bc55 | 1790 | DEFUN ("erase-buffer", Ferase_buffer, Serase_buffer, 0, 0, "*", |
1ab256cb | 1791 | "Delete the entire contents of the current buffer.\n\ |
2950a20e | 1792 | Any narrowing restriction in effect (see `narrow-to-region') is removed,\n\ |
1ab256cb RM |
1793 | so the buffer is truly empty after this.") |
1794 | () | |
1795 | { | |
1796 | Fwiden (); | |
c0d9a0c3 GM |
1797 | |
1798 | del_range (BEG, Z); | |
c280bc6a | 1799 | |
1ab256cb RM |
1800 | current_buffer->last_window_start = 1; |
1801 | /* Prevent warnings, or suspension of auto saving, that would happen | |
1802 | if future size is less than past size. Use of erase-buffer | |
1803 | implies that the future text is not really related to the past text. */ | |
8d7a4592 | 1804 | XSETFASTINT (current_buffer->save_length, 0); |
1ab256cb RM |
1805 | return Qnil; |
1806 | } | |
1807 | ||
01136e9b | 1808 | void |
1ab256cb RM |
1809 | validate_region (b, e) |
1810 | register Lisp_Object *b, *e; | |
1811 | { | |
1ab256cb RM |
1812 | CHECK_NUMBER_COERCE_MARKER (*b, 0); |
1813 | CHECK_NUMBER_COERCE_MARKER (*e, 1); | |
1814 | ||
1815 | if (XINT (*b) > XINT (*e)) | |
1816 | { | |
03192067 KH |
1817 | Lisp_Object tem; |
1818 | tem = *b; *b = *e; *e = tem; | |
1ab256cb RM |
1819 | } |
1820 | ||
1821 | if (!(BEGV <= XINT (*b) && XINT (*b) <= XINT (*e) | |
1822 | && XINT (*e) <= ZV)) | |
1823 | args_out_of_range (*b, *e); | |
1824 | } | |
1825 | \f | |
b05525fa RS |
1826 | /* Advance BYTE_POS up to a character boundary |
1827 | and return the adjusted position. */ | |
1828 | ||
1829 | static int | |
1830 | advance_to_char_boundary (byte_pos) | |
1831 | int byte_pos; | |
1832 | { | |
f8449323 | 1833 | int c; |
b05525fa | 1834 | |
f8449323 RS |
1835 | if (byte_pos == BEG) |
1836 | /* Beginning of buffer is always a character boundary. */ | |
1837 | return 1; | |
1838 | ||
1839 | c = FETCH_BYTE (byte_pos); | |
1840 | if (! CHAR_HEAD_P (c)) | |
b05525fa | 1841 | { |
1be6387d | 1842 | /* We should advance BYTE_POS only when C is a constituent of a |
f8449323 | 1843 | multibyte sequence. */ |
a9bcded1 KH |
1844 | int orig_byte_pos = byte_pos; |
1845 | ||
1846 | do | |
1847 | { | |
1848 | byte_pos--; | |
1849 | c = FETCH_BYTE (byte_pos); | |
1850 | } | |
1851 | while (! CHAR_HEAD_P (c) && byte_pos > BEG); | |
f8449323 | 1852 | INC_POS (byte_pos); |
a9bcded1 KH |
1853 | if (byte_pos < orig_byte_pos) |
1854 | byte_pos = orig_byte_pos; | |
f8449323 RS |
1855 | /* If C is a constituent of a multibyte sequence, BYTE_POS was |
1856 | surely advance to the correct character boundary. If C is | |
1857 | not, BYTE_POS was unchanged. */ | |
b05525fa RS |
1858 | } |
1859 | ||
20773569 | 1860 | return byte_pos; |
b05525fa RS |
1861 | } |
1862 | ||
3ac81adb RS |
1863 | DEFUN ("set-buffer-multibyte", Fset_buffer_multibyte, Sset_buffer_multibyte, |
1864 | 1, 1, 0, | |
1865 | "Set the multibyte flag of the current buffer to FLAG.\n\ | |
1866 | If FLAG is t, this makes the buffer a multibyte buffer.\n\ | |
1867 | If FLAG is nil, this makes the buffer a single-byte buffer.\n\ | |
1868 | The buffer contents remain unchanged as a sequence of bytes\n\ | |
1869 | but the contents viewed as characters do change.") | |
1870 | (flag) | |
1871 | Lisp_Object flag; | |
1872 | { | |
1873 | Lisp_Object tail, markers; | |
abc9d959 | 1874 | struct buffer *other; |
a9bcded1 KH |
1875 | int undo_enabled_p = !EQ (current_buffer->undo_list, Qt); |
1876 | int begv = BEGV, zv = ZV; | |
1877 | int narrowed = (BEG != begv || Z != zv); | |
ed00559d | 1878 | int modified_p = !NILP (Fbuffer_modified_p (Qnil)); |
3ac81adb | 1879 | |
6e553d5e RS |
1880 | if (current_buffer->base_buffer) |
1881 | error ("Cannot do `set-buffer-multibyte' on an indirect buffer"); | |
1882 | ||
70e77119 AS |
1883 | /* Do nothing if nothing actually changes. */ |
1884 | if (NILP (flag) == NILP (current_buffer->enable_multibyte_characters)) | |
1885 | return flag; | |
1886 | ||
b05525fa RS |
1887 | /* It would be better to update the list, |
1888 | but this is good enough for now. */ | |
a9bcded1 KH |
1889 | if (undo_enabled_p) |
1890 | current_buffer->undo_list = Qt; | |
b05525fa | 1891 | |
3ac81adb RS |
1892 | /* If the cached position is for this buffer, clear it out. */ |
1893 | clear_charpos_cache (current_buffer); | |
1894 | ||
a9bcded1 KH |
1895 | if (narrowed) |
1896 | Fwiden (); | |
1897 | ||
3ac81adb RS |
1898 | if (NILP (flag)) |
1899 | { | |
a9bcded1 KH |
1900 | int pos, stop; |
1901 | unsigned char *p; | |
1902 | ||
3ac81adb RS |
1903 | /* Do this first, so it can use CHAR_TO_BYTE |
1904 | to calculate the old correspondences. */ | |
1905 | set_intervals_multibyte (0); | |
1906 | ||
1907 | current_buffer->enable_multibyte_characters = Qnil; | |
1908 | ||
1909 | Z = Z_BYTE; | |
1910 | BEGV = BEGV_BYTE; | |
1911 | ZV = ZV_BYTE; | |
1912 | GPT = GPT_BYTE; | |
1913 | TEMP_SET_PT_BOTH (PT_BYTE, PT_BYTE); | |
1914 | ||
1915 | tail = BUF_MARKERS (current_buffer); | |
8801a864 | 1916 | while (! NILP (tail)) |
3ac81adb RS |
1917 | { |
1918 | XMARKER (tail)->charpos = XMARKER (tail)->bytepos; | |
1919 | tail = XMARKER (tail)->chain; | |
1920 | } | |
a9bcded1 KH |
1921 | |
1922 | /* Convert multibyte form of 8-bit characters to unibyte. */ | |
1923 | pos = BEG; | |
1924 | stop = GPT; | |
1925 | p = BEG_ADDR; | |
1926 | while (1) | |
1927 | { | |
1928 | int c, bytes; | |
1929 | ||
1930 | if (pos == stop) | |
1931 | { | |
1932 | if (pos == Z) | |
1933 | break; | |
1934 | p = GAP_END_ADDR; | |
1935 | stop = Z; | |
1936 | } | |
1937 | if (MULTIBYTE_STR_AS_UNIBYTE_P (p, bytes)) | |
1938 | p += bytes, pos += bytes; | |
1939 | else | |
1940 | { | |
1941 | c = STRING_CHAR (p, stop - pos); | |
1942 | /* Delete all bytes for this 8-bit character but the | |
1943 | last one, and change the last one to the charcter | |
1944 | code. */ | |
1945 | bytes--; | |
1946 | del_range_2 (pos, pos, pos + bytes, pos + bytes, 0); | |
1947 | p = GAP_END_ADDR; | |
1948 | *p++ = c; | |
1949 | pos++; | |
1950 | if (begv > pos) | |
1951 | begv -= bytes; | |
1952 | if (zv > pos) | |
1953 | zv -= bytes; | |
1954 | stop = Z; | |
1955 | } | |
1956 | } | |
1957 | if (narrowed) | |
1958 | Fnarrow_to_region (make_number (begv), make_number (zv)); | |
3ac81adb RS |
1959 | } |
1960 | else | |
1961 | { | |
a9bcded1 KH |
1962 | int pt = PT; |
1963 | int pos, stop; | |
1964 | unsigned char *p; | |
1965 | ||
673c57d2 | 1966 | /* Be sure not to have a multibyte sequence striding over the GAP. |
a9bcded1 KH |
1967 | Ex: We change this: "...abc\201 _GAP_ \241def..." |
1968 | to: "...abc _GAP_ \201\241def..." */ | |
673c57d2 KH |
1969 | |
1970 | if (GPT_BYTE > 1 && GPT_BYTE < Z_BYTE | |
1971 | && ! CHAR_HEAD_P (*(GAP_END_ADDR))) | |
1972 | { | |
1973 | unsigned char *p = GPT_ADDR - 1; | |
1974 | ||
1975 | while (! CHAR_HEAD_P (*p) && p > BEG_ADDR) p--; | |
1976 | if (BASE_LEADING_CODE_P (*p)) | |
1977 | { | |
1978 | int new_gpt = GPT_BYTE - (GPT_ADDR - p); | |
1979 | ||
1980 | move_gap_both (new_gpt, new_gpt); | |
1981 | } | |
1982 | } | |
1983 | ||
a9bcded1 KH |
1984 | /* Make the buffer contents valid as multibyte by converting |
1985 | 8-bit characters to multibyte form. */ | |
1986 | pos = BEG; | |
1987 | stop = GPT; | |
1988 | p = BEG_ADDR; | |
1989 | while (1) | |
1990 | { | |
1991 | int bytes; | |
1992 | ||
1993 | if (pos == stop) | |
1994 | { | |
1995 | if (pos == Z) | |
1996 | break; | |
1997 | p = GAP_END_ADDR; | |
1998 | stop = Z; | |
1999 | } | |
2000 | ||
2001 | if (UNIBYTE_STR_AS_MULTIBYTE_P (p, stop - pos, bytes)) | |
2002 | p += bytes, pos += bytes; | |
2003 | else | |
2004 | { | |
2005 | unsigned char tmp[MAX_MULTIBYTE_LENGTH]; | |
2006 | ||
2007 | bytes = CHAR_STRING (*p, tmp); | |
2008 | *p = tmp[0]; | |
2009 | TEMP_SET_PT_BOTH (pos + 1, pos + 1); | |
2010 | bytes--; | |
2011 | insert_1_both (tmp + 1, bytes, bytes, 1, 0, 0); | |
2012 | /* Now the gap is after the just inserted data. */ | |
2013 | pos = GPT; | |
2014 | p = GAP_END_ADDR; | |
2015 | if (pos <= begv) | |
2016 | begv += bytes; | |
2017 | if (pos <= zv) | |
2018 | zv += bytes; | |
2019 | if (pos <= pt) | |
2020 | pt += bytes; | |
2021 | stop = Z; | |
2022 | } | |
2023 | } | |
2024 | ||
2025 | if (pt != PT) | |
2026 | TEMP_SET_PT (pt); | |
2027 | ||
2028 | if (narrowed) | |
2029 | Fnarrow_to_region (make_number (begv), make_number (zv)); | |
2030 | ||
3ac81adb RS |
2031 | /* Do this first, so that chars_in_text asks the right question. |
2032 | set_intervals_multibyte needs it too. */ | |
2033 | current_buffer->enable_multibyte_characters = Qt; | |
2034 | ||
b05525fa | 2035 | GPT_BYTE = advance_to_char_boundary (GPT_BYTE); |
3ac81adb | 2036 | GPT = chars_in_text (BEG_ADDR, GPT_BYTE - BEG_BYTE) + BEG; |
b05525fa | 2037 | |
673c57d2 | 2038 | Z = chars_in_text (GAP_END_ADDR, Z_BYTE - GPT_BYTE) + GPT; |
b05525fa RS |
2039 | |
2040 | BEGV_BYTE = advance_to_char_boundary (BEGV_BYTE); | |
3ac81adb | 2041 | if (BEGV_BYTE > GPT_BYTE) |
673c57d2 | 2042 | BEGV = chars_in_text (GAP_END_ADDR, BEGV_BYTE - GPT_BYTE) + GPT; |
3ac81adb RS |
2043 | else |
2044 | BEGV = chars_in_text (BEG_ADDR, BEGV_BYTE - BEG_BYTE) + BEG; | |
b05525fa RS |
2045 | |
2046 | ZV_BYTE = advance_to_char_boundary (ZV_BYTE); | |
3ac81adb | 2047 | if (ZV_BYTE > GPT_BYTE) |
673c57d2 | 2048 | ZV = chars_in_text (GAP_END_ADDR, ZV_BYTE - GPT_BYTE) + GPT; |
3ac81adb RS |
2049 | else |
2050 | ZV = chars_in_text (BEG_ADDR, ZV_BYTE - BEG_BYTE) + BEG; | |
b05525fa RS |
2051 | |
2052 | { | |
2053 | int pt_byte = advance_to_char_boundary (PT_BYTE); | |
2054 | int pt; | |
2055 | ||
2056 | if (pt_byte > GPT_BYTE) | |
673c57d2 | 2057 | pt = chars_in_text (GAP_END_ADDR, pt_byte - GPT_BYTE) + GPT; |
b05525fa RS |
2058 | else |
2059 | pt = chars_in_text (BEG_ADDR, pt_byte - BEG_BYTE) + BEG; | |
2060 | TEMP_SET_PT_BOTH (pt, pt_byte); | |
2061 | } | |
3ac81adb RS |
2062 | |
2063 | tail = markers = BUF_MARKERS (current_buffer); | |
95fb069b RS |
2064 | |
2065 | /* This prevents BYTE_TO_CHAR (that is, buf_bytepos_to_charpos) from | |
2066 | getting confused by the markers that have not yet been updated. | |
2067 | It is also a signal that it should never create a marker. */ | |
3ac81adb RS |
2068 | BUF_MARKERS (current_buffer) = Qnil; |
2069 | ||
8801a864 | 2070 | while (! NILP (tail)) |
3ac81adb | 2071 | { |
b05525fa RS |
2072 | XMARKER (tail)->bytepos |
2073 | = advance_to_char_boundary (XMARKER (tail)->bytepos); | |
3ac81adb | 2074 | XMARKER (tail)->charpos = BYTE_TO_CHAR (XMARKER (tail)->bytepos); |
b05525fa | 2075 | |
3ac81adb RS |
2076 | tail = XMARKER (tail)->chain; |
2077 | } | |
b69f9797 RS |
2078 | |
2079 | /* Make sure no markers were put on the chain | |
2080 | while the chain value was incorrect. */ | |
2081 | if (! EQ (BUF_MARKERS (current_buffer), Qnil)) | |
2082 | abort (); | |
2083 | ||
3ac81adb RS |
2084 | BUF_MARKERS (current_buffer) = markers; |
2085 | ||
2086 | /* Do this last, so it can calculate the new correspondences | |
2087 | between chars and bytes. */ | |
2088 | set_intervals_multibyte (1); | |
2089 | } | |
2090 | ||
a9bcded1 KH |
2091 | if (undo_enabled_p) |
2092 | current_buffer->undo_list = Qnil; | |
2093 | ||
724b203f GM |
2094 | /* Changing the multibyteness of a buffer means that all windows |
2095 | showing that buffer must be updated thoroughly. */ | |
2096 | current_buffer->prevent_redisplay_optimizations_p = 1; | |
2097 | ++windows_or_buffers_changed; | |
2098 | ||
abc9d959 RS |
2099 | /* Copy this buffer's new multibyte status |
2100 | into all of its indirect buffers. */ | |
2101 | for (other = all_buffers; other; other = other->next) | |
2102 | if (other->base_buffer == current_buffer && !NILP (other->name)) | |
724b203f GM |
2103 | { |
2104 | other->enable_multibyte_characters | |
2105 | = current_buffer->enable_multibyte_characters; | |
2106 | other->prevent_redisplay_optimizations_p = 1; | |
2107 | } | |
abc9d959 | 2108 | |
ed00559d KH |
2109 | /* Restore the modifiedness of the buffer. */ |
2110 | if (!modified_p && !NILP (Fbuffer_modified_p (Qnil))) | |
2111 | Fset_buffer_modified_p (Qnil); | |
2112 | ||
3ac81adb RS |
2113 | return flag; |
2114 | } | |
2115 | \f | |
1ab256cb RM |
2116 | DEFUN ("kill-all-local-variables", Fkill_all_local_variables, Skill_all_local_variables, |
2117 | 0, 0, 0, | |
2118 | "Switch to Fundamental mode by killing current buffer's local variables.\n\ | |
2119 | Most local variable bindings are eliminated so that the default values\n\ | |
2120 | become effective once more. Also, the syntax table is set from\n\ | |
2121 | `standard-syntax-table', the local keymap is set to nil,\n\ | |
2122 | and the abbrev table from `fundamental-mode-abbrev-table'.\n\ | |
2123 | This function also forces redisplay of the mode line.\n\ | |
2124 | \n\ | |
2125 | Every function to select a new major mode starts by\n\ | |
2126 | calling this function.\n\n\ | |
2127 | As a special exception, local variables whose names have\n\ | |
c5a15222 RS |
2128 | a non-nil `permanent-local' property are not eliminated by this function.\n\ |
2129 | \n\ | |
2130 | The first thing this function does is run\n\ | |
2131 | the normal hook `change-major-mode-hook'.") | |
1ab256cb RM |
2132 | () |
2133 | { | |
2134 | register Lisp_Object alist, sym, tem; | |
2135 | Lisp_Object oalist; | |
7410477a | 2136 | |
fd186f07 RS |
2137 | if (!NILP (Vrun_hooks)) |
2138 | call1 (Vrun_hooks, intern ("change-major-mode-hook")); | |
1ab256cb RM |
2139 | oalist = current_buffer->local_var_alist; |
2140 | ||
2f3f993b RS |
2141 | /* Make sure none of the bindings in oalist |
2142 | remain swapped in, in their symbols. */ | |
1ab256cb | 2143 | |
2f3f993b | 2144 | swap_out_buffer_local_variables (current_buffer); |
1ab256cb RM |
2145 | |
2146 | /* Actually eliminate all local bindings of this buffer. */ | |
2147 | ||
13de9290 | 2148 | reset_buffer_local_variables (current_buffer, 0); |
1ab256cb RM |
2149 | |
2150 | /* Redisplay mode lines; we are changing major mode. */ | |
2151 | ||
2152 | update_mode_lines++; | |
2153 | ||
2154 | /* Any which are supposed to be permanent, | |
2155 | make local again, with the same values they had. */ | |
2156 | ||
7539e11f | 2157 | for (alist = oalist; !NILP (alist); alist = XCDR (alist)) |
1ab256cb | 2158 | { |
7539e11f | 2159 | sym = XCAR (XCAR (alist)); |
1ab256cb | 2160 | tem = Fget (sym, Qpermanent_local); |
265a9e55 | 2161 | if (! NILP (tem)) |
01050cb5 RM |
2162 | { |
2163 | Fmake_local_variable (sym); | |
7539e11f | 2164 | Fset (sym, XCDR (XCAR (alist))); |
01050cb5 | 2165 | } |
1ab256cb RM |
2166 | } |
2167 | ||
2168 | /* Force mode-line redisplay. Useful here because all major mode | |
2169 | commands call this function. */ | |
2170 | update_mode_lines++; | |
2171 | ||
2172 | return Qnil; | |
2173 | } | |
2f3f993b RS |
2174 | |
2175 | /* Make sure no local variables remain set up with buffer B | |
2176 | for their current values. */ | |
2177 | ||
2178 | static void | |
2179 | swap_out_buffer_local_variables (b) | |
2180 | struct buffer *b; | |
2181 | { | |
2182 | Lisp_Object oalist, alist, sym, tem, buffer; | |
2183 | ||
2184 | XSETBUFFER (buffer, b); | |
2185 | oalist = b->local_var_alist; | |
2186 | ||
7539e11f | 2187 | for (alist = oalist; !NILP (alist); alist = XCDR (alist)) |
2f3f993b | 2188 | { |
7539e11f | 2189 | sym = XCAR (XCAR (alist)); |
2f3f993b RS |
2190 | |
2191 | /* Need not do anything if some other buffer's binding is now encached. */ | |
3d871c85 | 2192 | tem = XBUFFER_LOCAL_VALUE (XSYMBOL (sym)->value)->buffer; |
8801a864 | 2193 | if (BUFFERP (tem) && XBUFFER (tem) == current_buffer) |
2f3f993b RS |
2194 | { |
2195 | /* Symbol is set up for this buffer's old local value. | |
2196 | Set it up for the current buffer with the default value. */ | |
2197 | ||
3d871c85 | 2198 | tem = XBUFFER_LOCAL_VALUE (XSYMBOL (sym)->value)->cdr; |
2f3f993b RS |
2199 | /* Store the symbol's current value into the alist entry |
2200 | it is currently set up for. This is so that, if the | |
2201 | local is marked permanent, and we make it local again | |
2202 | later in Fkill_all_local_variables, we don't lose the value. */ | |
7539e11f | 2203 | XCDR (XCAR (tem)) |
3d871c85 | 2204 | = do_symval_forwarding (XBUFFER_LOCAL_VALUE (XSYMBOL (sym)->value)->realvalue); |
2f3f993b | 2205 | /* Switch to the symbol's default-value alist entry. */ |
7539e11f | 2206 | XCAR (tem) = tem; |
2f3f993b | 2207 | /* Mark it as current for buffer B. */ |
3d871c85 | 2208 | XBUFFER_LOCAL_VALUE (XSYMBOL (sym)->value)->buffer = buffer; |
2f3f993b | 2209 | /* Store the current value into any forwarding in the symbol. */ |
3d871c85 RS |
2210 | store_symval_forwarding (sym, |
2211 | XBUFFER_LOCAL_VALUE (XSYMBOL (sym)->value)->realvalue, | |
7539e11f | 2212 | XCDR (tem)); |
2f3f993b RS |
2213 | } |
2214 | } | |
2215 | } | |
1ab256cb | 2216 | \f |
2eec3b4e RS |
2217 | /* Find all the overlays in the current buffer that contain position POS. |
2218 | Return the number found, and store them in a vector in *VEC_PTR. | |
2219 | Store in *LEN_PTR the size allocated for the vector. | |
52f8ec73 JB |
2220 | Store in *NEXT_PTR the next position after POS where an overlay starts, |
2221 | or ZV if there are no more overlays. | |
bbbe9545 | 2222 | Store in *PREV_PTR the previous position before POS where an overlay ends, |
413e06a4 RS |
2223 | or where an overlay starts which ends at or after POS; |
2224 | or BEGV if there are no such overlays. | |
239c932b | 2225 | NEXT_PTR and/or PREV_PTR may be 0, meaning don't store that info. |
2eec3b4e RS |
2226 | |
2227 | *VEC_PTR and *LEN_PTR should contain a valid vector and size | |
61d54cd5 RS |
2228 | when this function is called. |
2229 | ||
2230 | If EXTEND is non-zero, we make the vector bigger if necessary. | |
2231 | If EXTEND is zero, we never extend the vector, | |
2232 | and we store only as many overlays as will fit. | |
ac869cf7 MB |
2233 | But we still return the total number of overlays. |
2234 | ||
2235 | If CHANGE_REQ is true, then any position written into *PREV_PTR or | |
2236 | *NEXT_PTR is guaranteed to be not equal to POS, unless it is the | |
2237 | default (BEGV or ZV). */ | |
2eec3b4e RS |
2238 | |
2239 | int | |
ac869cf7 | 2240 | overlays_at (pos, extend, vec_ptr, len_ptr, next_ptr, prev_ptr, change_req) |
2eec3b4e | 2241 | int pos; |
61d54cd5 | 2242 | int extend; |
2eec3b4e RS |
2243 | Lisp_Object **vec_ptr; |
2244 | int *len_ptr; | |
2245 | int *next_ptr; | |
239c932b | 2246 | int *prev_ptr; |
ac869cf7 | 2247 | int change_req; |
1ab256cb | 2248 | { |
6af718a4 | 2249 | Lisp_Object tail, overlay, start, end; |
2eec3b4e RS |
2250 | int idx = 0; |
2251 | int len = *len_ptr; | |
2252 | Lisp_Object *vec = *vec_ptr; | |
2253 | int next = ZV; | |
239c932b | 2254 | int prev = BEGV; |
61d54cd5 RS |
2255 | int inhibit_storing = 0; |
2256 | ||
2eec3b4e | 2257 | for (tail = current_buffer->overlays_before; |
8fc0589a | 2258 | GC_CONSP (tail); |
7539e11f | 2259 | tail = XCDR (tail)) |
2eec3b4e | 2260 | { |
239c932b | 2261 | int startpos, endpos; |
52f8ec73 | 2262 | |
7539e11f | 2263 | overlay = XCAR (tail); |
1ab256cb | 2264 | |
2eec3b4e RS |
2265 | start = OVERLAY_START (overlay); |
2266 | end = OVERLAY_END (overlay); | |
239c932b RS |
2267 | endpos = OVERLAY_POSITION (end); |
2268 | if (endpos < pos) | |
2269 | { | |
2270 | if (prev < endpos) | |
2271 | prev = endpos; | |
2272 | break; | |
2273 | } | |
413e06a4 RS |
2274 | startpos = OVERLAY_POSITION (start); |
2275 | /* This one ends at or after POS | |
daa1c109 | 2276 | so its start counts for PREV_PTR if it's before POS. */ |
413e06a4 RS |
2277 | if (prev < startpos && startpos < pos) |
2278 | prev = startpos; | |
239c932b RS |
2279 | if (endpos == pos) |
2280 | continue; | |
2eec3b4e RS |
2281 | if (startpos <= pos) |
2282 | { | |
2283 | if (idx == len) | |
2284 | { | |
61d54cd5 RS |
2285 | /* The supplied vector is full. |
2286 | Either make it bigger, or don't store any more in it. */ | |
2287 | if (extend) | |
2288 | { | |
0552666b GM |
2289 | /* Make it work with an initial len == 0. */ |
2290 | len *= 2; | |
2291 | if (len == 0) | |
2292 | len = 4; | |
2293 | *len_ptr = len; | |
61d54cd5 RS |
2294 | vec = (Lisp_Object *) xrealloc (vec, len * sizeof (Lisp_Object)); |
2295 | *vec_ptr = vec; | |
2296 | } | |
2297 | else | |
2298 | inhibit_storing = 1; | |
2eec3b4e | 2299 | } |
61d54cd5 RS |
2300 | |
2301 | if (!inhibit_storing) | |
2302 | vec[idx] = overlay; | |
2303 | /* Keep counting overlays even if we can't return them all. */ | |
2304 | idx++; | |
2eec3b4e RS |
2305 | } |
2306 | else if (startpos < next) | |
2307 | next = startpos; | |
2308 | } | |
2309 | ||
2310 | for (tail = current_buffer->overlays_after; | |
8fc0589a | 2311 | GC_CONSP (tail); |
7539e11f | 2312 | tail = XCDR (tail)) |
1ab256cb | 2313 | { |
239c932b | 2314 | int startpos, endpos; |
52f8ec73 | 2315 | |
7539e11f | 2316 | overlay = XCAR (tail); |
2eec3b4e RS |
2317 | |
2318 | start = OVERLAY_START (overlay); | |
2319 | end = OVERLAY_END (overlay); | |
2320 | startpos = OVERLAY_POSITION (start); | |
52f8ec73 | 2321 | if (pos < startpos) |
2eec3b4e RS |
2322 | { |
2323 | if (startpos < next) | |
2324 | next = startpos; | |
2325 | break; | |
2326 | } | |
239c932b RS |
2327 | endpos = OVERLAY_POSITION (end); |
2328 | if (pos < endpos) | |
2eec3b4e RS |
2329 | { |
2330 | if (idx == len) | |
2331 | { | |
61d54cd5 RS |
2332 | if (extend) |
2333 | { | |
2334 | *len_ptr = len *= 2; | |
0552666b GM |
2335 | if (len == 0) |
2336 | len = *len_ptr = 4; | |
61d54cd5 RS |
2337 | vec = (Lisp_Object *) xrealloc (vec, len * sizeof (Lisp_Object)); |
2338 | *vec_ptr = vec; | |
2339 | } | |
2340 | else | |
2341 | inhibit_storing = 1; | |
2eec3b4e | 2342 | } |
61d54cd5 RS |
2343 | |
2344 | if (!inhibit_storing) | |
2345 | vec[idx] = overlay; | |
2346 | idx++; | |
413e06a4 RS |
2347 | |
2348 | if (startpos < pos && startpos > prev) | |
2349 | prev = startpos; | |
2eec3b4e | 2350 | } |
239c932b RS |
2351 | else if (endpos < pos && endpos > prev) |
2352 | prev = endpos; | |
ac869cf7 | 2353 | else if (endpos == pos && startpos > prev && !change_req) |
413e06a4 | 2354 | prev = startpos; |
1ab256cb RM |
2355 | } |
2356 | ||
239c932b RS |
2357 | if (next_ptr) |
2358 | *next_ptr = next; | |
2359 | if (prev_ptr) | |
2360 | *prev_ptr = prev; | |
2eec3b4e RS |
2361 | return idx; |
2362 | } | |
74514898 RS |
2363 | \f |
2364 | /* Find all the overlays in the current buffer that overlap the range BEG-END | |
2a3eeee7 RS |
2365 | or are empty at BEG. |
2366 | ||
74514898 RS |
2367 | Return the number found, and store them in a vector in *VEC_PTR. |
2368 | Store in *LEN_PTR the size allocated for the vector. | |
2369 | Store in *NEXT_PTR the next position after POS where an overlay starts, | |
2370 | or ZV if there are no more overlays. | |
2371 | Store in *PREV_PTR the previous position before POS where an overlay ends, | |
2372 | or BEGV if there are no previous overlays. | |
2373 | NEXT_PTR and/or PREV_PTR may be 0, meaning don't store that info. | |
2374 | ||
2375 | *VEC_PTR and *LEN_PTR should contain a valid vector and size | |
2376 | when this function is called. | |
2377 | ||
2378 | If EXTEND is non-zero, we make the vector bigger if necessary. | |
2379 | If EXTEND is zero, we never extend the vector, | |
2380 | and we store only as many overlays as will fit. | |
2381 | But we still return the total number of overlays. */ | |
2382 | ||
2383 | int | |
2384 | overlays_in (beg, end, extend, vec_ptr, len_ptr, next_ptr, prev_ptr) | |
2385 | int beg, end; | |
2386 | int extend; | |
2387 | Lisp_Object **vec_ptr; | |
2388 | int *len_ptr; | |
2389 | int *next_ptr; | |
2390 | int *prev_ptr; | |
2391 | { | |
6af718a4 | 2392 | Lisp_Object tail, overlay, ostart, oend; |
74514898 RS |
2393 | int idx = 0; |
2394 | int len = *len_ptr; | |
2395 | Lisp_Object *vec = *vec_ptr; | |
2396 | int next = ZV; | |
2397 | int prev = BEGV; | |
2398 | int inhibit_storing = 0; | |
2399 | ||
2400 | for (tail = current_buffer->overlays_before; | |
2401 | GC_CONSP (tail); | |
7539e11f | 2402 | tail = XCDR (tail)) |
74514898 RS |
2403 | { |
2404 | int startpos, endpos; | |
2405 | ||
7539e11f | 2406 | overlay = XCAR (tail); |
74514898 RS |
2407 | |
2408 | ostart = OVERLAY_START (overlay); | |
2409 | oend = OVERLAY_END (overlay); | |
2410 | endpos = OVERLAY_POSITION (oend); | |
2411 | if (endpos < beg) | |
2412 | { | |
2413 | if (prev < endpos) | |
2414 | prev = endpos; | |
2415 | break; | |
2416 | } | |
2417 | startpos = OVERLAY_POSITION (ostart); | |
2418 | /* Count an interval if it either overlaps the range | |
2a3eeee7 | 2419 | or is empty at the start of the range. */ |
74514898 | 2420 | if ((beg < endpos && startpos < end) |
2a3eeee7 | 2421 | || (startpos == endpos && beg == endpos)) |
74514898 RS |
2422 | { |
2423 | if (idx == len) | |
2424 | { | |
2425 | /* The supplied vector is full. | |
2426 | Either make it bigger, or don't store any more in it. */ | |
2427 | if (extend) | |
2428 | { | |
2429 | *len_ptr = len *= 2; | |
2430 | vec = (Lisp_Object *) xrealloc (vec, len * sizeof (Lisp_Object)); | |
2431 | *vec_ptr = vec; | |
2432 | } | |
2433 | else | |
2434 | inhibit_storing = 1; | |
2435 | } | |
2436 | ||
2437 | if (!inhibit_storing) | |
2438 | vec[idx] = overlay; | |
2439 | /* Keep counting overlays even if we can't return them all. */ | |
2440 | idx++; | |
2441 | } | |
2442 | else if (startpos < next) | |
2443 | next = startpos; | |
2444 | } | |
2445 | ||
2446 | for (tail = current_buffer->overlays_after; | |
2447 | GC_CONSP (tail); | |
7539e11f | 2448 | tail = XCDR (tail)) |
74514898 RS |
2449 | { |
2450 | int startpos, endpos; | |
2451 | ||
7539e11f | 2452 | overlay = XCAR (tail); |
74514898 RS |
2453 | |
2454 | ostart = OVERLAY_START (overlay); | |
2455 | oend = OVERLAY_END (overlay); | |
2456 | startpos = OVERLAY_POSITION (ostart); | |
2457 | if (end < startpos) | |
2458 | { | |
2459 | if (startpos < next) | |
2460 | next = startpos; | |
2461 | break; | |
2462 | } | |
2463 | endpos = OVERLAY_POSITION (oend); | |
2a3eeee7 RS |
2464 | /* Count an interval if it either overlaps the range |
2465 | or is empty at the start of the range. */ | |
74514898 | 2466 | if ((beg < endpos && startpos < end) |
2a3eeee7 | 2467 | || (startpos == endpos && beg == endpos)) |
74514898 RS |
2468 | { |
2469 | if (idx == len) | |
2470 | { | |
2471 | if (extend) | |
2472 | { | |
2473 | *len_ptr = len *= 2; | |
2474 | vec = (Lisp_Object *) xrealloc (vec, len * sizeof (Lisp_Object)); | |
2475 | *vec_ptr = vec; | |
2476 | } | |
2477 | else | |
2478 | inhibit_storing = 1; | |
2479 | } | |
2480 | ||
2481 | if (!inhibit_storing) | |
2482 | vec[idx] = overlay; | |
2483 | idx++; | |
2484 | } | |
2485 | else if (endpos < beg && endpos > prev) | |
2486 | prev = endpos; | |
2487 | } | |
fc04fa47 | 2488 | |
74514898 RS |
2489 | if (next_ptr) |
2490 | *next_ptr = next; | |
2491 | if (prev_ptr) | |
2492 | *prev_ptr = prev; | |
2493 | return idx; | |
2494 | } | |
2495 | \f | |
fc04fa47 KH |
2496 | /* Fast function to just test if we're at an overlay boundary. */ |
2497 | int | |
2498 | overlay_touches_p (pos) | |
2499 | int pos; | |
2500 | { | |
2501 | Lisp_Object tail, overlay; | |
2502 | ||
2503 | for (tail = current_buffer->overlays_before; GC_CONSP (tail); | |
7539e11f | 2504 | tail = XCDR (tail)) |
fc04fa47 KH |
2505 | { |
2506 | int endpos; | |
2507 | ||
7539e11f | 2508 | overlay = XCAR (tail); |
fc04fa47 KH |
2509 | if (!GC_OVERLAYP (overlay)) |
2510 | abort (); | |
2511 | ||
2512 | endpos = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
2513 | if (endpos < pos) | |
2514 | break; | |
2515 | if (endpos == pos || OVERLAY_POSITION (OVERLAY_START (overlay)) == pos) | |
2516 | return 1; | |
2517 | } | |
2518 | ||
2519 | for (tail = current_buffer->overlays_after; GC_CONSP (tail); | |
7539e11f | 2520 | tail = XCDR (tail)) |
fc04fa47 KH |
2521 | { |
2522 | int startpos; | |
2523 | ||
7539e11f | 2524 | overlay = XCAR (tail); |
fc04fa47 KH |
2525 | if (!GC_OVERLAYP (overlay)) |
2526 | abort (); | |
2527 | ||
2528 | startpos = OVERLAY_POSITION (OVERLAY_START (overlay)); | |
2529 | if (pos < startpos) | |
2530 | break; | |
2531 | if (startpos == pos || OVERLAY_POSITION (OVERLAY_END (overlay)) == pos) | |
2532 | return 1; | |
2533 | } | |
2534 | return 0; | |
2535 | } | |
2eec3b4e | 2536 | \f |
5985d248 KH |
2537 | struct sortvec |
2538 | { | |
2539 | Lisp_Object overlay; | |
2540 | int beg, end; | |
2541 | int priority; | |
2542 | }; | |
2543 | ||
2544 | static int | |
dfcf069d AS |
2545 | compare_overlays (v1, v2) |
2546 | const void *v1, *v2; | |
5985d248 | 2547 | { |
dfcf069d AS |
2548 | const struct sortvec *s1 = (const struct sortvec *) v1; |
2549 | const struct sortvec *s2 = (const struct sortvec *) v2; | |
5985d248 KH |
2550 | if (s1->priority != s2->priority) |
2551 | return s1->priority - s2->priority; | |
2552 | if (s1->beg != s2->beg) | |
2553 | return s1->beg - s2->beg; | |
2554 | if (s1->end != s2->end) | |
2555 | return s2->end - s1->end; | |
2556 | return 0; | |
2557 | } | |
2558 | ||
2559 | /* Sort an array of overlays by priority. The array is modified in place. | |
2560 | The return value is the new size; this may be smaller than the original | |
2561 | size if some of the overlays were invalid or were window-specific. */ | |
2562 | int | |
2563 | sort_overlays (overlay_vec, noverlays, w) | |
2564 | Lisp_Object *overlay_vec; | |
2565 | int noverlays; | |
2566 | struct window *w; | |
2567 | { | |
2568 | int i, j; | |
2569 | struct sortvec *sortvec; | |
2570 | sortvec = (struct sortvec *) alloca (noverlays * sizeof (struct sortvec)); | |
2571 | ||
2572 | /* Put the valid and relevant overlays into sortvec. */ | |
2573 | ||
2574 | for (i = 0, j = 0; i < noverlays; i++) | |
2575 | { | |
0fa767e7 | 2576 | Lisp_Object tem; |
c99fc30f | 2577 | Lisp_Object overlay; |
5985d248 | 2578 | |
c99fc30f | 2579 | overlay = overlay_vec[i]; |
5985d248 KH |
2580 | if (OVERLAY_VALID (overlay) |
2581 | && OVERLAY_POSITION (OVERLAY_START (overlay)) > 0 | |
2582 | && OVERLAY_POSITION (OVERLAY_END (overlay)) > 0) | |
2583 | { | |
0fa767e7 KH |
2584 | /* If we're interested in a specific window, then ignore |
2585 | overlays that are limited to some other window. */ | |
2586 | if (w) | |
5985d248 | 2587 | { |
0fa767e7 KH |
2588 | Lisp_Object window; |
2589 | ||
2590 | window = Foverlay_get (overlay, Qwindow); | |
a7a60ce9 | 2591 | if (WINDOWP (window) && XWINDOW (window) != w) |
0fa767e7 | 2592 | continue; |
5985d248 | 2593 | } |
0fa767e7 KH |
2594 | |
2595 | /* This overlay is good and counts: put it into sortvec. */ | |
2596 | sortvec[j].overlay = overlay; | |
2597 | sortvec[j].beg = OVERLAY_POSITION (OVERLAY_START (overlay)); | |
2598 | sortvec[j].end = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
2599 | tem = Foverlay_get (overlay, Qpriority); | |
2600 | if (INTEGERP (tem)) | |
2601 | sortvec[j].priority = XINT (tem); | |
2602 | else | |
2603 | sortvec[j].priority = 0; | |
2604 | j++; | |
5985d248 KH |
2605 | } |
2606 | } | |
2607 | noverlays = j; | |
2608 | ||
2609 | /* Sort the overlays into the proper order: increasing priority. */ | |
2610 | ||
2611 | if (noverlays > 1) | |
2612 | qsort (sortvec, noverlays, sizeof (struct sortvec), compare_overlays); | |
2613 | ||
2614 | for (i = 0; i < noverlays; i++) | |
2615 | overlay_vec[i] = sortvec[i].overlay; | |
2616 | return (noverlays); | |
2617 | } | |
2618 | \f | |
bbbe9545 KH |
2619 | struct sortstr |
2620 | { | |
cb26008f | 2621 | Lisp_Object string, string2; |
bbbe9545 KH |
2622 | int size; |
2623 | int priority; | |
2624 | }; | |
2625 | ||
e8185fa8 KH |
2626 | struct sortstrlist |
2627 | { | |
2628 | struct sortstr *buf; /* An array that expands as needed; never freed. */ | |
2629 | int size; /* Allocated length of that array. */ | |
2630 | int used; /* How much of the array is currently in use. */ | |
2631 | int bytes; /* Total length of the strings in buf. */ | |
2632 | }; | |
2633 | ||
2634 | /* Buffers for storing information about the overlays touching a given | |
2635 | position. These could be automatic variables in overlay_strings, but | |
2636 | it's more efficient to hold onto the memory instead of repeatedly | |
2637 | allocating and freeing it. */ | |
2638 | static struct sortstrlist overlay_heads, overlay_tails; | |
9492daf2 | 2639 | static unsigned char *overlay_str_buf; |
e8185fa8 KH |
2640 | |
2641 | /* Allocated length of overlay_str_buf. */ | |
2642 | static int overlay_str_len; | |
2643 | ||
bbbe9545 KH |
2644 | /* A comparison function suitable for passing to qsort. */ |
2645 | static int | |
2646 | cmp_for_strings (as1, as2) | |
2647 | char *as1, *as2; | |
2648 | { | |
2649 | struct sortstr *s1 = (struct sortstr *)as1; | |
2650 | struct sortstr *s2 = (struct sortstr *)as2; | |
2651 | if (s1->size != s2->size) | |
2652 | return s2->size - s1->size; | |
2653 | if (s1->priority != s2->priority) | |
2654 | return s1->priority - s2->priority; | |
2655 | return 0; | |
2656 | } | |
2657 | ||
e8185fa8 | 2658 | static void |
cb26008f | 2659 | record_overlay_string (ssl, str, str2, pri, size) |
e8185fa8 | 2660 | struct sortstrlist *ssl; |
cb26008f | 2661 | Lisp_Object str, str2, pri; |
e8185fa8 KH |
2662 | int size; |
2663 | { | |
43d27a72 RS |
2664 | int nbytes; |
2665 | ||
e8185fa8 KH |
2666 | if (ssl->used == ssl->size) |
2667 | { | |
2668 | if (ssl->buf) | |
2669 | ssl->size *= 2; | |
2670 | else | |
2671 | ssl->size = 5; | |
2672 | ssl->buf = ((struct sortstr *) | |
2673 | xrealloc (ssl->buf, ssl->size * sizeof (struct sortstr))); | |
2674 | } | |
2675 | ssl->buf[ssl->used].string = str; | |
cb26008f | 2676 | ssl->buf[ssl->used].string2 = str2; |
e8185fa8 KH |
2677 | ssl->buf[ssl->used].size = size; |
2678 | ssl->buf[ssl->used].priority = (INTEGERP (pri) ? XINT (pri) : 0); | |
2679 | ssl->used++; | |
43d27a72 RS |
2680 | |
2681 | if (NILP (current_buffer->enable_multibyte_characters)) | |
2682 | nbytes = XSTRING (str)->size; | |
2683 | else if (! STRING_MULTIBYTE (str)) | |
2684 | nbytes = count_size_as_multibyte (XSTRING (str)->data, | |
fc932ac6 | 2685 | STRING_BYTES (XSTRING (str))); |
43d27a72 | 2686 | else |
fc932ac6 | 2687 | nbytes = STRING_BYTES (XSTRING (str)); |
43d27a72 RS |
2688 | |
2689 | ssl->bytes += nbytes; | |
2690 | ||
cb26008f | 2691 | if (STRINGP (str2)) |
43d27a72 RS |
2692 | { |
2693 | if (NILP (current_buffer->enable_multibyte_characters)) | |
2694 | nbytes = XSTRING (str2)->size; | |
2695 | else if (! STRING_MULTIBYTE (str2)) | |
2696 | nbytes = count_size_as_multibyte (XSTRING (str2)->data, | |
fc932ac6 | 2697 | STRING_BYTES (XSTRING (str2))); |
43d27a72 | 2698 | else |
fc932ac6 | 2699 | nbytes = STRING_BYTES (XSTRING (str2)); |
43d27a72 RS |
2700 | |
2701 | ssl->bytes += nbytes; | |
2702 | } | |
e8185fa8 | 2703 | } |
bbbe9545 KH |
2704 | |
2705 | /* Return the concatenation of the strings associated with overlays that | |
2706 | begin or end at POS, ignoring overlays that are specific to a window | |
2707 | other than W. The strings are concatenated in the appropriate order: | |
2708 | shorter overlays nest inside longer ones, and higher priority inside | |
cb26008f KH |
2709 | lower. Normally all of the after-strings come first, but zero-sized |
2710 | overlays have their after-strings ride along with the before-strings | |
2711 | because it would look strange to print them inside-out. | |
2712 | ||
2713 | Returns the string length, and stores the contents indirectly through | |
2714 | PSTR, if that variable is non-null. The string may be overwritten by | |
2715 | subsequent calls. */ | |
6b5d3b89 | 2716 | |
bbbe9545 KH |
2717 | int |
2718 | overlay_strings (pos, w, pstr) | |
2719 | int pos; | |
2720 | struct window *w; | |
6b5d3b89 | 2721 | unsigned char **pstr; |
bbbe9545 | 2722 | { |
e8185fa8 | 2723 | Lisp_Object ov, overlay, window, str; |
bbbe9545 | 2724 | int startpos, endpos; |
43d27a72 | 2725 | int multibyte = ! NILP (current_buffer->enable_multibyte_characters); |
bbbe9545 | 2726 | |
e8185fa8 KH |
2727 | overlay_heads.used = overlay_heads.bytes = 0; |
2728 | overlay_tails.used = overlay_tails.bytes = 0; | |
7539e11f | 2729 | for (ov = current_buffer->overlays_before; CONSP (ov); ov = XCDR (ov)) |
bbbe9545 | 2730 | { |
7539e11f | 2731 | overlay = XCAR (ov); |
bbbe9545 KH |
2732 | if (!OVERLAYP (overlay)) |
2733 | abort (); | |
2734 | ||
2735 | startpos = OVERLAY_POSITION (OVERLAY_START (overlay)); | |
2736 | endpos = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
2737 | if (endpos < pos) | |
2738 | break; | |
2739 | if (endpos != pos && startpos != pos) | |
2740 | continue; | |
2741 | window = Foverlay_get (overlay, Qwindow); | |
2742 | if (WINDOWP (window) && XWINDOW (window) != w) | |
2743 | continue; | |
e8185fa8 KH |
2744 | if (startpos == pos |
2745 | && (str = Foverlay_get (overlay, Qbefore_string), STRINGP (str))) | |
2746 | record_overlay_string (&overlay_heads, str, | |
cb26008f KH |
2747 | (startpos == endpos |
2748 | ? Foverlay_get (overlay, Qafter_string) | |
2749 | : Qnil), | |
2750 | Foverlay_get (overlay, Qpriority), | |
2751 | endpos - startpos); | |
2752 | else if (endpos == pos | |
2753 | && (str = Foverlay_get (overlay, Qafter_string), STRINGP (str))) | |
2754 | record_overlay_string (&overlay_tails, str, Qnil, | |
e8185fa8 KH |
2755 | Foverlay_get (overlay, Qpriority), |
2756 | endpos - startpos); | |
bbbe9545 | 2757 | } |
7539e11f | 2758 | for (ov = current_buffer->overlays_after; CONSP (ov); ov = XCDR (ov)) |
bbbe9545 | 2759 | { |
7539e11f | 2760 | overlay = XCAR (ov); |
bbbe9545 KH |
2761 | if (!OVERLAYP (overlay)) |
2762 | abort (); | |
2763 | ||
2764 | startpos = OVERLAY_POSITION (OVERLAY_START (overlay)); | |
2765 | endpos = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
2766 | if (startpos > pos) | |
2767 | break; | |
e8185fa8 KH |
2768 | if (endpos != pos && startpos != pos) |
2769 | continue; | |
2770 | window = Foverlay_get (overlay, Qwindow); | |
2771 | if (WINDOWP (window) && XWINDOW (window) != w) | |
2772 | continue; | |
e8185fa8 KH |
2773 | if (startpos == pos |
2774 | && (str = Foverlay_get (overlay, Qbefore_string), STRINGP (str))) | |
2775 | record_overlay_string (&overlay_heads, str, | |
cb26008f KH |
2776 | (startpos == endpos |
2777 | ? Foverlay_get (overlay, Qafter_string) | |
2778 | : Qnil), | |
2779 | Foverlay_get (overlay, Qpriority), | |
2780 | endpos - startpos); | |
2781 | else if (endpos == pos | |
2782 | && (str = Foverlay_get (overlay, Qafter_string), STRINGP (str))) | |
2783 | record_overlay_string (&overlay_tails, str, Qnil, | |
e8185fa8 KH |
2784 | Foverlay_get (overlay, Qpriority), |
2785 | endpos - startpos); | |
bbbe9545 | 2786 | } |
e8185fa8 KH |
2787 | if (overlay_tails.used > 1) |
2788 | qsort (overlay_tails.buf, overlay_tails.used, sizeof (struct sortstr), | |
2789 | cmp_for_strings); | |
2790 | if (overlay_heads.used > 1) | |
2791 | qsort (overlay_heads.buf, overlay_heads.used, sizeof (struct sortstr), | |
2792 | cmp_for_strings); | |
2793 | if (overlay_heads.bytes || overlay_tails.bytes) | |
bbbe9545 | 2794 | { |
e8185fa8 | 2795 | Lisp_Object tem; |
bbbe9545 | 2796 | int i; |
9f4d7cde | 2797 | unsigned char *p; |
e8185fa8 | 2798 | int total = overlay_heads.bytes + overlay_tails.bytes; |
bbbe9545 KH |
2799 | |
2800 | if (total > overlay_str_len) | |
9f4d7cde RS |
2801 | { |
2802 | overlay_str_len = total; | |
2803 | overlay_str_buf = (unsigned char *)xrealloc (overlay_str_buf, | |
2804 | total); | |
2805 | } | |
bbbe9545 | 2806 | p = overlay_str_buf; |
e8185fa8 | 2807 | for (i = overlay_tails.used; --i >= 0;) |
bbbe9545 | 2808 | { |
43d27a72 | 2809 | int nbytes; |
e8185fa8 | 2810 | tem = overlay_tails.buf[i].string; |
fc932ac6 RS |
2811 | nbytes = copy_text (XSTRING (tem)->data, p, |
2812 | STRING_BYTES (XSTRING (tem)), | |
43d27a72 RS |
2813 | STRING_MULTIBYTE (tem), multibyte); |
2814 | p += nbytes; | |
bbbe9545 | 2815 | } |
e8185fa8 | 2816 | for (i = 0; i < overlay_heads.used; ++i) |
bbbe9545 | 2817 | { |
43d27a72 | 2818 | int nbytes; |
e8185fa8 | 2819 | tem = overlay_heads.buf[i].string; |
fc932ac6 RS |
2820 | nbytes = copy_text (XSTRING (tem)->data, p, |
2821 | STRING_BYTES (XSTRING (tem)), | |
43d27a72 RS |
2822 | STRING_MULTIBYTE (tem), multibyte); |
2823 | p += nbytes; | |
cb26008f KH |
2824 | tem = overlay_heads.buf[i].string2; |
2825 | if (STRINGP (tem)) | |
2826 | { | |
43d27a72 | 2827 | nbytes = copy_text (XSTRING (tem)->data, p, |
fc932ac6 | 2828 | STRING_BYTES (XSTRING (tem)), |
43d27a72 RS |
2829 | STRING_MULTIBYTE (tem), multibyte); |
2830 | p += nbytes; | |
cb26008f | 2831 | } |
bbbe9545 | 2832 | } |
cb26008f KH |
2833 | if (p != overlay_str_buf + total) |
2834 | abort (); | |
bbbe9545 KH |
2835 | if (pstr) |
2836 | *pstr = overlay_str_buf; | |
e8185fa8 | 2837 | return total; |
bbbe9545 | 2838 | } |
e8185fa8 | 2839 | return 0; |
bbbe9545 KH |
2840 | } |
2841 | \f | |
5c4f68f1 | 2842 | /* Shift overlays in BUF's overlay lists, to center the lists at POS. */ |
1ab256cb | 2843 | |
2eec3b4e | 2844 | void |
5c4f68f1 JB |
2845 | recenter_overlay_lists (buf, pos) |
2846 | struct buffer *buf; | |
2eec3b4e RS |
2847 | int pos; |
2848 | { | |
2849 | Lisp_Object overlay, tail, next, prev, beg, end; | |
2850 | ||
2851 | /* See if anything in overlays_before should move to overlays_after. */ | |
2852 | ||
2853 | /* We don't strictly need prev in this loop; it should always be nil. | |
2854 | But we use it for symmetry and in case that should cease to be true | |
2855 | with some future change. */ | |
2856 | prev = Qnil; | |
5c4f68f1 | 2857 | for (tail = buf->overlays_before; |
2eec3b4e RS |
2858 | CONSP (tail); |
2859 | prev = tail, tail = next) | |
1ab256cb | 2860 | { |
7539e11f KR |
2861 | next = XCDR (tail); |
2862 | overlay = XCAR (tail); | |
2eec3b4e RS |
2863 | |
2864 | /* If the overlay is not valid, get rid of it. */ | |
2865 | if (!OVERLAY_VALID (overlay)) | |
52f8ec73 JB |
2866 | #if 1 |
2867 | abort (); | |
2868 | #else | |
2eec3b4e RS |
2869 | { |
2870 | /* Splice the cons cell TAIL out of overlays_before. */ | |
2871 | if (!NILP (prev)) | |
7539e11f | 2872 | XCDR (prev) = next; |
2eec3b4e | 2873 | else |
5c4f68f1 | 2874 | buf->overlays_before = next; |
2eec3b4e RS |
2875 | tail = prev; |
2876 | continue; | |
2877 | } | |
52f8ec73 | 2878 | #endif |
1ab256cb | 2879 | |
2eec3b4e RS |
2880 | beg = OVERLAY_START (overlay); |
2881 | end = OVERLAY_END (overlay); | |
1ab256cb | 2882 | |
2eec3b4e | 2883 | if (OVERLAY_POSITION (end) > pos) |
1ab256cb | 2884 | { |
2eec3b4e RS |
2885 | /* OVERLAY needs to be moved. */ |
2886 | int where = OVERLAY_POSITION (beg); | |
2887 | Lisp_Object other, other_prev; | |
2888 | ||
2889 | /* Splice the cons cell TAIL out of overlays_before. */ | |
2890 | if (!NILP (prev)) | |
7539e11f | 2891 | XCDR (prev) = next; |
2eec3b4e | 2892 | else |
5c4f68f1 | 2893 | buf->overlays_before = next; |
2eec3b4e RS |
2894 | |
2895 | /* Search thru overlays_after for where to put it. */ | |
2896 | other_prev = Qnil; | |
5c4f68f1 | 2897 | for (other = buf->overlays_after; |
2eec3b4e | 2898 | CONSP (other); |
7539e11f | 2899 | other_prev = other, other = XCDR (other)) |
1ab256cb | 2900 | { |
6af718a4 | 2901 | Lisp_Object otherbeg, otheroverlay; |
2eec3b4e | 2902 | |
7539e11f | 2903 | otheroverlay = XCAR (other); |
2eec3b4e | 2904 | if (! OVERLAY_VALID (otheroverlay)) |
52f8ec73 | 2905 | abort (); |
2eec3b4e RS |
2906 | |
2907 | otherbeg = OVERLAY_START (otheroverlay); | |
2908 | if (OVERLAY_POSITION (otherbeg) >= where) | |
2909 | break; | |
1ab256cb | 2910 | } |
2eec3b4e RS |
2911 | |
2912 | /* Add TAIL to overlays_after before OTHER. */ | |
7539e11f | 2913 | XCDR (tail) = other; |
2eec3b4e | 2914 | if (!NILP (other_prev)) |
7539e11f | 2915 | XCDR (other_prev) = tail; |
1ab256cb | 2916 | else |
5c4f68f1 | 2917 | buf->overlays_after = tail; |
2eec3b4e | 2918 | tail = prev; |
1ab256cb | 2919 | } |
2eec3b4e RS |
2920 | else |
2921 | /* We've reached the things that should stay in overlays_before. | |
2922 | All the rest of overlays_before must end even earlier, | |
2923 | so stop now. */ | |
2924 | break; | |
2925 | } | |
2926 | ||
2927 | /* See if anything in overlays_after should be in overlays_before. */ | |
2928 | prev = Qnil; | |
5c4f68f1 | 2929 | for (tail = buf->overlays_after; |
2eec3b4e RS |
2930 | CONSP (tail); |
2931 | prev = tail, tail = next) | |
2932 | { | |
7539e11f KR |
2933 | next = XCDR (tail); |
2934 | overlay = XCAR (tail); | |
2eec3b4e RS |
2935 | |
2936 | /* If the overlay is not valid, get rid of it. */ | |
2937 | if (!OVERLAY_VALID (overlay)) | |
52f8ec73 JB |
2938 | #if 1 |
2939 | abort (); | |
2940 | #else | |
2eec3b4e RS |
2941 | { |
2942 | /* Splice the cons cell TAIL out of overlays_after. */ | |
2943 | if (!NILP (prev)) | |
7539e11f | 2944 | XCDR (prev) = next; |
2eec3b4e | 2945 | else |
5c4f68f1 | 2946 | buf->overlays_after = next; |
2eec3b4e RS |
2947 | tail = prev; |
2948 | continue; | |
2949 | } | |
52f8ec73 | 2950 | #endif |
2eec3b4e RS |
2951 | |
2952 | beg = OVERLAY_START (overlay); | |
2953 | end = OVERLAY_END (overlay); | |
2954 | ||
2955 | /* Stop looking, when we know that nothing further | |
2956 | can possibly end before POS. */ | |
2957 | if (OVERLAY_POSITION (beg) > pos) | |
2958 | break; | |
2959 | ||
2960 | if (OVERLAY_POSITION (end) <= pos) | |
2961 | { | |
2962 | /* OVERLAY needs to be moved. */ | |
2963 | int where = OVERLAY_POSITION (end); | |
2964 | Lisp_Object other, other_prev; | |
2965 | ||
2966 | /* Splice the cons cell TAIL out of overlays_after. */ | |
2967 | if (!NILP (prev)) | |
7539e11f | 2968 | XCDR (prev) = next; |
2eec3b4e | 2969 | else |
5c4f68f1 | 2970 | buf->overlays_after = next; |
2eec3b4e RS |
2971 | |
2972 | /* Search thru overlays_before for where to put it. */ | |
2973 | other_prev = Qnil; | |
5c4f68f1 | 2974 | for (other = buf->overlays_before; |
2eec3b4e | 2975 | CONSP (other); |
7539e11f | 2976 | other_prev = other, other = XCDR (other)) |
2eec3b4e RS |
2977 | { |
2978 | Lisp_Object otherend, otheroverlay; | |
2eec3b4e | 2979 | |
7539e11f | 2980 | otheroverlay = XCAR (other); |
2eec3b4e | 2981 | if (! OVERLAY_VALID (otheroverlay)) |
52f8ec73 | 2982 | abort (); |
2eec3b4e RS |
2983 | |
2984 | otherend = OVERLAY_END (otheroverlay); | |
2985 | if (OVERLAY_POSITION (otherend) <= where) | |
2986 | break; | |
2987 | } | |
2988 | ||
2989 | /* Add TAIL to overlays_before before OTHER. */ | |
7539e11f | 2990 | XCDR (tail) = other; |
2eec3b4e | 2991 | if (!NILP (other_prev)) |
7539e11f | 2992 | XCDR (other_prev) = tail; |
2eec3b4e | 2993 | else |
5c4f68f1 | 2994 | buf->overlays_before = tail; |
2eec3b4e RS |
2995 | tail = prev; |
2996 | } | |
2997 | } | |
2998 | ||
8d7a4592 | 2999 | XSETFASTINT (buf->overlay_center, pos); |
2eec3b4e | 3000 | } |
2b1bdf65 | 3001 | |
423cdb46 KH |
3002 | void |
3003 | adjust_overlays_for_insert (pos, length) | |
3004 | int pos; | |
3005 | int length; | |
3006 | { | |
3007 | /* After an insertion, the lists are still sorted properly, | |
3008 | but we may need to update the value of the overlay center. */ | |
3009 | if (XFASTINT (current_buffer->overlay_center) >= pos) | |
3010 | XSETFASTINT (current_buffer->overlay_center, | |
3011 | XFASTINT (current_buffer->overlay_center) + length); | |
3012 | } | |
3013 | ||
3014 | void | |
3015 | adjust_overlays_for_delete (pos, length) | |
3016 | int pos; | |
3017 | int length; | |
3018 | { | |
3019 | if (XFASTINT (current_buffer->overlay_center) < pos) | |
3020 | /* The deletion was to our right. No change needed; the before- and | |
3021 | after-lists are still consistent. */ | |
3022 | ; | |
3023 | else if (XFASTINT (current_buffer->overlay_center) > pos + length) | |
3024 | /* The deletion was to our left. We need to adjust the center value | |
3025 | to account for the change in position, but the lists are consistent | |
3026 | given the new value. */ | |
3027 | XSETFASTINT (current_buffer->overlay_center, | |
3028 | XFASTINT (current_buffer->overlay_center) - length); | |
3029 | else | |
3030 | /* We're right in the middle. There might be things on the after-list | |
3031 | that now belong on the before-list. Recentering will move them, | |
3032 | and also update the center point. */ | |
3033 | recenter_overlay_lists (current_buffer, pos); | |
3034 | } | |
3035 | ||
2b1bdf65 KH |
3036 | /* Fix up overlays that were garbled as a result of permuting markers |
3037 | in the range START through END. Any overlay with at least one | |
3038 | endpoint in this range will need to be unlinked from the overlay | |
3039 | list and reinserted in its proper place. | |
3040 | Such an overlay might even have negative size at this point. | |
3041 | If so, we'll reverse the endpoints. Can you think of anything | |
3042 | better to do in this situation? */ | |
3043 | void | |
3044 | fix_overlays_in_range (start, end) | |
3045 | register int start, end; | |
3046 | { | |
6af718a4 | 3047 | Lisp_Object overlay; |
2b1bdf65 KH |
3048 | Lisp_Object before_list, after_list; |
3049 | Lisp_Object *ptail, *pbefore = &before_list, *pafter = &after_list; | |
3050 | int startpos, endpos; | |
3051 | ||
3052 | /* This algorithm shifts links around instead of consing and GCing. | |
3053 | The loop invariant is that before_list (resp. after_list) is a | |
3054 | well-formed list except that its last element, the one that | |
3055 | *pbefore (resp. *pafter) points to, is still uninitialized. | |
3056 | So it's not a bug that before_list isn't initialized, although | |
3057 | it may look strange. */ | |
3058 | for (ptail = ¤t_buffer->overlays_before; CONSP (*ptail);) | |
3059 | { | |
7539e11f | 3060 | overlay = XCAR (*ptail); |
2b1bdf65 KH |
3061 | endpos = OVERLAY_POSITION (OVERLAY_END (overlay)); |
3062 | if (endpos < start) | |
3063 | break; | |
3064 | startpos = OVERLAY_POSITION (OVERLAY_START (overlay)); | |
3065 | if (endpos < end | |
3066 | || (startpos >= start && startpos < end)) | |
3067 | { | |
3068 | /* If the overlay is backwards, fix that now. */ | |
3069 | if (startpos > endpos) | |
3070 | { | |
3071 | int tem; | |
2c99f3ea RS |
3072 | Fset_marker (OVERLAY_START (overlay), make_number (endpos), |
3073 | Qnil); | |
3074 | Fset_marker (OVERLAY_END (overlay), make_number (startpos), | |
3075 | Qnil); | |
2b1bdf65 KH |
3076 | tem = startpos; startpos = endpos; endpos = tem; |
3077 | } | |
3078 | /* Add it to the end of the wrong list. Later on, | |
3079 | recenter_overlay_lists will move it to the right place. */ | |
3080 | if (endpos < XINT (current_buffer->overlay_center)) | |
3081 | { | |
3082 | *pafter = *ptail; | |
7539e11f | 3083 | pafter = &XCDR (*ptail); |
2b1bdf65 KH |
3084 | } |
3085 | else | |
3086 | { | |
3087 | *pbefore = *ptail; | |
7539e11f | 3088 | pbefore = &XCDR (*ptail); |
2b1bdf65 | 3089 | } |
7539e11f | 3090 | *ptail = XCDR (*ptail); |
2b1bdf65 KH |
3091 | } |
3092 | else | |
7539e11f | 3093 | ptail = &XCDR (*ptail); |
2b1bdf65 KH |
3094 | } |
3095 | for (ptail = ¤t_buffer->overlays_after; CONSP (*ptail);) | |
3096 | { | |
7539e11f | 3097 | overlay = XCAR (*ptail); |
2b1bdf65 KH |
3098 | startpos = OVERLAY_POSITION (OVERLAY_START (overlay)); |
3099 | if (startpos >= end) | |
3100 | break; | |
3101 | endpos = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
3102 | if (startpos >= start | |
3103 | || (endpos >= start && endpos < end)) | |
3104 | { | |
3105 | if (startpos > endpos) | |
3106 | { | |
3107 | int tem; | |
2c99f3ea RS |
3108 | Fset_marker (OVERLAY_START (overlay), make_number (endpos), |
3109 | Qnil); | |
3110 | Fset_marker (OVERLAY_END (overlay), make_number (startpos), | |
3111 | Qnil); | |
2b1bdf65 KH |
3112 | tem = startpos; startpos = endpos; endpos = tem; |
3113 | } | |
3114 | if (endpos < XINT (current_buffer->overlay_center)) | |
3115 | { | |
3116 | *pafter = *ptail; | |
7539e11f | 3117 | pafter = &XCDR (*ptail); |
2b1bdf65 KH |
3118 | } |
3119 | else | |
3120 | { | |
3121 | *pbefore = *ptail; | |
7539e11f | 3122 | pbefore = &XCDR (*ptail); |
2b1bdf65 | 3123 | } |
7539e11f | 3124 | *ptail = XCDR (*ptail); |
2b1bdf65 KH |
3125 | } |
3126 | else | |
7539e11f | 3127 | ptail = &XCDR (*ptail); |
2b1bdf65 KH |
3128 | } |
3129 | ||
3130 | /* Splice the constructed (wrong) lists into the buffer's lists, | |
3131 | and let the recenter function make it sane again. */ | |
3132 | *pbefore = current_buffer->overlays_before; | |
3133 | current_buffer->overlays_before = before_list; | |
3134 | recenter_overlay_lists (current_buffer, | |
3135 | XINT (current_buffer->overlay_center)); | |
3136 | ||
3137 | *pafter = current_buffer->overlays_after; | |
3138 | current_buffer->overlays_after = after_list; | |
3139 | recenter_overlay_lists (current_buffer, | |
3140 | XINT (current_buffer->overlay_center)); | |
3141 | } | |
3b06f880 KH |
3142 | |
3143 | /* We have two types of overlay: the one whose ending marker is | |
3144 | after-insertion-marker (this is the usual case) and the one whose | |
3145 | ending marker is before-insertion-marker. When `overlays_before' | |
3146 | contains overlays of the latter type and the former type in this | |
3147 | order and both overlays end at inserting position, inserting a text | |
3148 | increases only the ending marker of the latter type, which results | |
3149 | in incorrect ordering of `overlays_before'. | |
3150 | ||
3151 | This function fixes ordering of overlays in the slot | |
3152 | `overlays_before' of the buffer *BP. Before the insertion, `point' | |
3153 | was at PREV, and now is at POS. */ | |
3154 | ||
01136e9b | 3155 | void |
3b06f880 KH |
3156 | fix_overlays_before (bp, prev, pos) |
3157 | struct buffer *bp; | |
3158 | int prev, pos; | |
3159 | { | |
3160 | Lisp_Object *tailp = &bp->overlays_before; | |
3161 | Lisp_Object *right_place; | |
3162 | int end; | |
3163 | ||
3164 | /* After the insertion, the several overlays may be in incorrect | |
3165 | order. The possibility is that, in the list `overlays_before', | |
3166 | an overlay which ends at POS appears after an overlay which ends | |
3167 | at PREV. Since POS is greater than PREV, we must fix the | |
3168 | ordering of these overlays, by moving overlays ends at POS before | |
3169 | the overlays ends at PREV. */ | |
3170 | ||
3171 | /* At first, find a place where disordered overlays should be linked | |
3172 | in. It is where an overlay which end before POS exists. (i.e. an | |
3173 | overlay whose ending marker is after-insertion-marker if disorder | |
3174 | exists). */ | |
3175 | while (!NILP (*tailp) | |
7539e11f | 3176 | && ((end = OVERLAY_POSITION (OVERLAY_END (XCAR (*tailp)))) |
3b06f880 | 3177 | >= pos)) |
7539e11f | 3178 | tailp = &XCDR (*tailp); |
3b06f880 KH |
3179 | |
3180 | /* If we don't find such an overlay, | |
3181 | or the found one ends before PREV, | |
3182 | or the found one is the last one in the list, | |
3183 | we don't have to fix anything. */ | |
3184 | if (NILP (*tailp) | |
3185 | || end < prev | |
7539e11f | 3186 | || NILP (XCDR (*tailp))) |
3b06f880 KH |
3187 | return; |
3188 | ||
3189 | right_place = tailp; | |
7539e11f | 3190 | tailp = &XCDR (*tailp); |
3b06f880 KH |
3191 | |
3192 | /* Now, end position of overlays in the list *TAILP should be before | |
3193 | or equal to PREV. In the loop, an overlay which ends at POS is | |
3194 | moved ahead to the place pointed by RIGHT_PLACE. If we found an | |
3195 | overlay which ends before PREV, the remaining overlays are in | |
3196 | correct order. */ | |
3197 | while (!NILP (*tailp)) | |
3198 | { | |
7539e11f | 3199 | end = OVERLAY_POSITION (OVERLAY_END (XCAR (*tailp))); |
3b06f880 KH |
3200 | |
3201 | if (end == pos) | |
3202 | { /* This overlay is disordered. */ | |
3203 | Lisp_Object found = *tailp; | |
3204 | ||
3205 | /* Unlink the found overlay. */ | |
7539e11f | 3206 | *tailp = XCDR (found); |
3b06f880 | 3207 | /* Move an overlay at RIGHT_PLACE to the next of the found one. */ |
7539e11f | 3208 | XCDR (found) = *right_place; |
3b06f880 KH |
3209 | /* Link it into the right place. */ |
3210 | *right_place = found; | |
3211 | } | |
3212 | else if (end == prev) | |
7539e11f | 3213 | tailp = &XCDR (*tailp); |
3b06f880 KH |
3214 | else /* No more disordered overlay. */ |
3215 | break; | |
3216 | } | |
3217 | } | |
2eec3b4e | 3218 | \f |
52f8ec73 JB |
3219 | DEFUN ("overlayp", Foverlayp, Soverlayp, 1, 1, 0, |
3220 | "Return t if OBJECT is an overlay.") | |
3221 | (object) | |
3222 | Lisp_Object object; | |
3223 | { | |
3224 | return (OVERLAYP (object) ? Qt : Qnil); | |
3225 | } | |
3226 | ||
acac2700 | 3227 | DEFUN ("make-overlay", Fmake_overlay, Smake_overlay, 2, 5, 0, |
5c4f68f1 JB |
3228 | "Create a new overlay with range BEG to END in BUFFER.\n\ |
3229 | If omitted, BUFFER defaults to the current buffer.\n\ | |
acac2700 RS |
3230 | BEG and END may be integers or markers.\n\ |
3231 | The fourth arg FRONT-ADVANCE, if non-nil, makes the\n\ | |
3232 | front delimiter advance when text is inserted there.\n\ | |
3233 | The fifth arg REAR-ADVANCE, if non-nil, makes the\n\ | |
3234 | rear delimiter advance when text is inserted there.") | |
3235 | (beg, end, buffer, front_advance, rear_advance) | |
5c4f68f1 | 3236 | Lisp_Object beg, end, buffer; |
acac2700 | 3237 | Lisp_Object front_advance, rear_advance; |
2eec3b4e RS |
3238 | { |
3239 | Lisp_Object overlay; | |
5c4f68f1 | 3240 | struct buffer *b; |
2eec3b4e | 3241 | |
5c4f68f1 | 3242 | if (NILP (buffer)) |
67180c6a | 3243 | XSETBUFFER (buffer, current_buffer); |
883047b9 JB |
3244 | else |
3245 | CHECK_BUFFER (buffer, 2); | |
3246 | if (MARKERP (beg) | |
3247 | && ! EQ (Fmarker_buffer (beg), buffer)) | |
3248 | error ("Marker points into wrong buffer"); | |
3249 | if (MARKERP (end) | |
3250 | && ! EQ (Fmarker_buffer (end), buffer)) | |
3251 | error ("Marker points into wrong buffer"); | |
2eec3b4e | 3252 | |
883047b9 JB |
3253 | CHECK_NUMBER_COERCE_MARKER (beg, 1); |
3254 | CHECK_NUMBER_COERCE_MARKER (end, 1); | |
5c4f68f1 | 3255 | |
883047b9 | 3256 | if (XINT (beg) > XINT (end)) |
5c4f68f1 | 3257 | { |
c99fc30f KH |
3258 | Lisp_Object temp; |
3259 | temp = beg; beg = end; end = temp; | |
5c4f68f1 | 3260 | } |
883047b9 JB |
3261 | |
3262 | b = XBUFFER (buffer); | |
3263 | ||
3264 | beg = Fset_marker (Fmake_marker (), beg, buffer); | |
3265 | end = Fset_marker (Fmake_marker (), end, buffer); | |
5c4f68f1 | 3266 | |
acac2700 RS |
3267 | if (!NILP (front_advance)) |
3268 | XMARKER (beg)->insertion_type = 1; | |
3269 | if (!NILP (rear_advance)) | |
3270 | XMARKER (end)->insertion_type = 1; | |
597dd755 | 3271 | |
48e2e3ba | 3272 | overlay = allocate_misc (); |
89ca3e1b | 3273 | XMISCTYPE (overlay) = Lisp_Misc_Overlay; |
48e2e3ba KH |
3274 | XOVERLAY (overlay)->start = beg; |
3275 | XOVERLAY (overlay)->end = end; | |
3276 | XOVERLAY (overlay)->plist = Qnil; | |
2eec3b4e RS |
3277 | |
3278 | /* Put the new overlay on the wrong list. */ | |
3279 | end = OVERLAY_END (overlay); | |
5c4f68f1 JB |
3280 | if (OVERLAY_POSITION (end) < XINT (b->overlay_center)) |
3281 | b->overlays_after = Fcons (overlay, b->overlays_after); | |
2eec3b4e | 3282 | else |
5c4f68f1 | 3283 | b->overlays_before = Fcons (overlay, b->overlays_before); |
2eec3b4e RS |
3284 | |
3285 | /* This puts it in the right list, and in the right order. */ | |
5c4f68f1 | 3286 | recenter_overlay_lists (b, XINT (b->overlay_center)); |
2eec3b4e | 3287 | |
b61982dd JB |
3288 | /* We don't need to redisplay the region covered by the overlay, because |
3289 | the overlay has no properties at the moment. */ | |
3290 | ||
2eec3b4e RS |
3291 | return overlay; |
3292 | } | |
876aa27c RS |
3293 | \f |
3294 | /* Mark a section of BUF as needing redisplay because of overlays changes. */ | |
3295 | ||
3296 | static void | |
3297 | modify_overlay (buf, start, end) | |
3298 | struct buffer *buf; | |
3299 | int start, end; | |
3300 | { | |
3301 | if (start == end) | |
3302 | return; | |
3303 | ||
3304 | if (start > end) | |
3305 | { | |
3306 | int temp = start; | |
3307 | start = end; end = temp; | |
3308 | } | |
3309 | ||
481b5054 GM |
3310 | BUF_COMPUTE_UNCHANGED (buf, start, end); |
3311 | ||
876aa27c RS |
3312 | /* If this is a buffer not in the selected window, |
3313 | we must do other windows. */ | |
3314 | if (buf != XBUFFER (XWINDOW (selected_window)->buffer)) | |
3315 | windows_or_buffers_changed = 1; | |
876aa27c RS |
3316 | /* If multiple windows show this buffer, we must do other windows. */ |
3317 | else if (buffer_shared > 1) | |
3318 | windows_or_buffers_changed = 1; | |
876aa27c | 3319 | |
d8b9150f | 3320 | ++BUF_OVERLAY_MODIFF (buf); |
876aa27c | 3321 | } |
2eec3b4e | 3322 | |
876aa27c | 3323 | \f\f |
2e34157c RS |
3324 | Lisp_Object Fdelete_overlay (); |
3325 | ||
5c4f68f1 JB |
3326 | DEFUN ("move-overlay", Fmove_overlay, Smove_overlay, 3, 4, 0, |
3327 | "Set the endpoints of OVERLAY to BEG and END in BUFFER.\n\ | |
3ece337a JB |
3328 | If BUFFER is omitted, leave OVERLAY in the same buffer it inhabits now.\n\ |
3329 | If BUFFER is omitted, and OVERLAY is in no buffer, put it in the current\n\ | |
3330 | buffer.") | |
5c4f68f1 JB |
3331 | (overlay, beg, end, buffer) |
3332 | Lisp_Object overlay, beg, end, buffer; | |
2eec3b4e | 3333 | { |
0a4469c9 RS |
3334 | struct buffer *b, *ob; |
3335 | Lisp_Object obuffer; | |
3336 | int count = specpdl_ptr - specpdl; | |
5c4f68f1 | 3337 | |
52f8ec73 | 3338 | CHECK_OVERLAY (overlay, 0); |
5c4f68f1 JB |
3339 | if (NILP (buffer)) |
3340 | buffer = Fmarker_buffer (OVERLAY_START (overlay)); | |
3ece337a | 3341 | if (NILP (buffer)) |
67180c6a | 3342 | XSETBUFFER (buffer, current_buffer); |
5c4f68f1 | 3343 | CHECK_BUFFER (buffer, 3); |
883047b9 JB |
3344 | |
3345 | if (MARKERP (beg) | |
3346 | && ! EQ (Fmarker_buffer (beg), buffer)) | |
3347 | error ("Marker points into wrong buffer"); | |
3348 | if (MARKERP (end) | |
3349 | && ! EQ (Fmarker_buffer (end), buffer)) | |
3350 | error ("Marker points into wrong buffer"); | |
3351 | ||
b61982dd JB |
3352 | CHECK_NUMBER_COERCE_MARKER (beg, 1); |
3353 | CHECK_NUMBER_COERCE_MARKER (end, 1); | |
3354 | ||
9d7608b7 KH |
3355 | if (XINT (beg) == XINT (end) && ! NILP (Foverlay_get (overlay, Qevaporate))) |
3356 | return Fdelete_overlay (overlay); | |
0a4469c9 | 3357 | |
b61982dd JB |
3358 | if (XINT (beg) > XINT (end)) |
3359 | { | |
c99fc30f KH |
3360 | Lisp_Object temp; |
3361 | temp = beg; beg = end; end = temp; | |
b61982dd JB |
3362 | } |
3363 | ||
9d7608b7 KH |
3364 | specbind (Qinhibit_quit, Qt); |
3365 | ||
0a4469c9 | 3366 | obuffer = Fmarker_buffer (OVERLAY_START (overlay)); |
5c4f68f1 | 3367 | b = XBUFFER (buffer); |
8801a864 | 3368 | ob = BUFFERP (obuffer) ? XBUFFER (obuffer) : (struct buffer *) 0; |
2eec3b4e | 3369 | |
c82ed728 | 3370 | /* If the overlay has changed buffers, do a thorough redisplay. */ |
0a4469c9 | 3371 | if (!EQ (buffer, obuffer)) |
50760c4a RS |
3372 | { |
3373 | /* Redisplay where the overlay was. */ | |
3374 | if (!NILP (obuffer)) | |
3375 | { | |
2e34157c RS |
3376 | int o_beg; |
3377 | int o_end; | |
50760c4a | 3378 | |
80509f2f RS |
3379 | o_beg = OVERLAY_POSITION (OVERLAY_START (overlay)); |
3380 | o_end = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
50760c4a | 3381 | |
2e34157c | 3382 | modify_overlay (ob, o_beg, o_end); |
50760c4a RS |
3383 | } |
3384 | ||
3385 | /* Redisplay where the overlay is going to be. */ | |
876aa27c | 3386 | modify_overlay (b, XINT (beg), XINT (end)); |
50760c4a | 3387 | } |
c82ed728 JB |
3388 | else |
3389 | /* Redisplay the area the overlay has just left, or just enclosed. */ | |
3390 | { | |
2e34157c | 3391 | int o_beg, o_end; |
c82ed728 | 3392 | |
80509f2f RS |
3393 | o_beg = OVERLAY_POSITION (OVERLAY_START (overlay)); |
3394 | o_end = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
c82ed728 | 3395 | |
2e34157c RS |
3396 | if (o_beg == XINT (beg)) |
3397 | modify_overlay (b, o_end, XINT (end)); | |
3398 | else if (o_end == XINT (end)) | |
3399 | modify_overlay (b, o_beg, XINT (beg)); | |
c82ed728 JB |
3400 | else |
3401 | { | |
2e34157c RS |
3402 | if (XINT (beg) < o_beg) o_beg = XINT (beg); |
3403 | if (XINT (end) > o_end) o_end = XINT (end); | |
3404 | modify_overlay (b, o_beg, o_end); | |
c82ed728 JB |
3405 | } |
3406 | } | |
b61982dd | 3407 | |
0a4469c9 RS |
3408 | if (!NILP (obuffer)) |
3409 | { | |
3410 | ob->overlays_before = Fdelq (overlay, ob->overlays_before); | |
3411 | ob->overlays_after = Fdelq (overlay, ob->overlays_after); | |
3412 | } | |
5c4f68f1 JB |
3413 | |
3414 | Fset_marker (OVERLAY_START (overlay), beg, buffer); | |
3415 | Fset_marker (OVERLAY_END (overlay), end, buffer); | |
2eec3b4e RS |
3416 | |
3417 | /* Put the overlay on the wrong list. */ | |
3418 | end = OVERLAY_END (overlay); | |
5c4f68f1 JB |
3419 | if (OVERLAY_POSITION (end) < XINT (b->overlay_center)) |
3420 | b->overlays_after = Fcons (overlay, b->overlays_after); | |
2eec3b4e | 3421 | else |
5c4f68f1 | 3422 | b->overlays_before = Fcons (overlay, b->overlays_before); |
2eec3b4e RS |
3423 | |
3424 | /* This puts it in the right list, and in the right order. */ | |
5c4f68f1 | 3425 | recenter_overlay_lists (b, XINT (b->overlay_center)); |
2eec3b4e | 3426 | |
0a4469c9 | 3427 | return unbind_to (count, overlay); |
2eec3b4e RS |
3428 | } |
3429 | ||
3430 | DEFUN ("delete-overlay", Fdelete_overlay, Sdelete_overlay, 1, 1, 0, | |
5c4f68f1 | 3431 | "Delete the overlay OVERLAY from its buffer.") |
2eec3b4e | 3432 | (overlay) |
5c4f68f1 | 3433 | Lisp_Object overlay; |
2eec3b4e | 3434 | { |
0a4469c9 | 3435 | Lisp_Object buffer; |
5c4f68f1 | 3436 | struct buffer *b; |
0a4469c9 | 3437 | int count = specpdl_ptr - specpdl; |
5c4f68f1 | 3438 | |
52f8ec73 JB |
3439 | CHECK_OVERLAY (overlay, 0); |
3440 | ||
0a4469c9 RS |
3441 | buffer = Fmarker_buffer (OVERLAY_START (overlay)); |
3442 | if (NILP (buffer)) | |
3443 | return Qnil; | |
3444 | ||
3445 | b = XBUFFER (buffer); | |
3446 | ||
3447 | specbind (Qinhibit_quit, Qt); | |
5c4f68f1 JB |
3448 | |
3449 | b->overlays_before = Fdelq (overlay, b->overlays_before); | |
3450 | b->overlays_after = Fdelq (overlay, b->overlays_after); | |
3451 | ||
876aa27c | 3452 | modify_overlay (b, |
8231a9aa RS |
3453 | marker_position (OVERLAY_START (overlay)), |
3454 | marker_position (OVERLAY_END (overlay))); | |
b61982dd | 3455 | |
3ece337a JB |
3456 | Fset_marker (OVERLAY_START (overlay), Qnil, Qnil); |
3457 | Fset_marker (OVERLAY_END (overlay), Qnil, Qnil); | |
3458 | ||
0a4469c9 | 3459 | return unbind_to (count, Qnil); |
2eec3b4e RS |
3460 | } |
3461 | \f | |
8ebafa8d JB |
3462 | /* Overlay dissection functions. */ |
3463 | ||
3464 | DEFUN ("overlay-start", Foverlay_start, Soverlay_start, 1, 1, 0, | |
3465 | "Return the position at which OVERLAY starts.") | |
3466 | (overlay) | |
3467 | Lisp_Object overlay; | |
3468 | { | |
3469 | CHECK_OVERLAY (overlay, 0); | |
3470 | ||
3471 | return (Fmarker_position (OVERLAY_START (overlay))); | |
3472 | } | |
3473 | ||
3474 | DEFUN ("overlay-end", Foverlay_end, Soverlay_end, 1, 1, 0, | |
3475 | "Return the position at which OVERLAY ends.") | |
3476 | (overlay) | |
3477 | Lisp_Object overlay; | |
3478 | { | |
3479 | CHECK_OVERLAY (overlay, 0); | |
3480 | ||
3481 | return (Fmarker_position (OVERLAY_END (overlay))); | |
3482 | } | |
3483 | ||
3484 | DEFUN ("overlay-buffer", Foverlay_buffer, Soverlay_buffer, 1, 1, 0, | |
3485 | "Return the buffer OVERLAY belongs to.") | |
3486 | (overlay) | |
3487 | Lisp_Object overlay; | |
3488 | { | |
3489 | CHECK_OVERLAY (overlay, 0); | |
3490 | ||
3491 | return Fmarker_buffer (OVERLAY_START (overlay)); | |
3492 | } | |
3493 | ||
3494 | DEFUN ("overlay-properties", Foverlay_properties, Soverlay_properties, 1, 1, 0, | |
3495 | "Return a list of the properties on OVERLAY.\n\ | |
3496 | This is a copy of OVERLAY's plist; modifying its conses has no effect on\n\ | |
3497 | OVERLAY.") | |
3498 | (overlay) | |
3499 | Lisp_Object overlay; | |
3500 | { | |
3501 | CHECK_OVERLAY (overlay, 0); | |
3502 | ||
48e2e3ba | 3503 | return Fcopy_sequence (XOVERLAY (overlay)->plist); |
8ebafa8d JB |
3504 | } |
3505 | ||
3506 | \f | |
2eec3b4e | 3507 | DEFUN ("overlays-at", Foverlays_at, Soverlays_at, 1, 1, 0, |
eb8c3be9 | 3508 | "Return a list of the overlays that contain position POS.") |
2eec3b4e RS |
3509 | (pos) |
3510 | Lisp_Object pos; | |
3511 | { | |
3512 | int noverlays; | |
2eec3b4e RS |
3513 | Lisp_Object *overlay_vec; |
3514 | int len; | |
3515 | Lisp_Object result; | |
3516 | ||
3517 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
3518 | ||
3519 | len = 10; | |
3520 | overlay_vec = (Lisp_Object *) xmalloc (len * sizeof (Lisp_Object)); | |
3521 | ||
3522 | /* Put all the overlays we want in a vector in overlay_vec. | |
3523 | Store the length in len. */ | |
2a77a7d7 | 3524 | noverlays = overlays_at (XINT (pos), 1, &overlay_vec, &len, |
ac869cf7 | 3525 | (int *) 0, (int *) 0, 0); |
2eec3b4e RS |
3526 | |
3527 | /* Make a list of them all. */ | |
3528 | result = Flist (noverlays, overlay_vec); | |
3529 | ||
9ac0d9e0 | 3530 | xfree (overlay_vec); |
2eec3b4e RS |
3531 | return result; |
3532 | } | |
3533 | ||
74514898 | 3534 | DEFUN ("overlays-in", Foverlays_in, Soverlays_in, 2, 2, 0, |
2a3eeee7 RS |
3535 | "Return a list of the overlays that overlap the region BEG ... END.\n\ |
3536 | Overlap means that at least one character is contained within the overlay\n\ | |
3537 | and also contained within the specified region.\n\ | |
3538 | Empty overlays are included in the result if they are located at BEG\n\ | |
3539 | or between BEG and END.") | |
74514898 RS |
3540 | (beg, end) |
3541 | Lisp_Object beg, end; | |
3542 | { | |
3543 | int noverlays; | |
3544 | Lisp_Object *overlay_vec; | |
3545 | int len; | |
3546 | Lisp_Object result; | |
3547 | ||
3548 | CHECK_NUMBER_COERCE_MARKER (beg, 0); | |
3549 | CHECK_NUMBER_COERCE_MARKER (end, 0); | |
3550 | ||
3551 | len = 10; | |
3552 | overlay_vec = (Lisp_Object *) xmalloc (len * sizeof (Lisp_Object)); | |
3553 | ||
3554 | /* Put all the overlays we want in a vector in overlay_vec. | |
3555 | Store the length in len. */ | |
3556 | noverlays = overlays_in (XINT (beg), XINT (end), 1, &overlay_vec, &len, | |
3557 | (int *) 0, (int *) 0); | |
3558 | ||
3559 | /* Make a list of them all. */ | |
3560 | result = Flist (noverlays, overlay_vec); | |
3561 | ||
3562 | xfree (overlay_vec); | |
3563 | return result; | |
3564 | } | |
3565 | ||
2eec3b4e RS |
3566 | DEFUN ("next-overlay-change", Fnext_overlay_change, Snext_overlay_change, |
3567 | 1, 1, 0, | |
bbe20e81 KH |
3568 | "Return the next position after POS where an overlay starts or ends.\n\ |
3569 | If there are no more overlay boundaries after POS, return (point-max).") | |
2eec3b4e RS |
3570 | (pos) |
3571 | Lisp_Object pos; | |
3572 | { | |
3573 | int noverlays; | |
3574 | int endpos; | |
3575 | Lisp_Object *overlay_vec; | |
3576 | int len; | |
2eec3b4e RS |
3577 | int i; |
3578 | ||
3579 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
3580 | ||
3581 | len = 10; | |
3582 | overlay_vec = (Lisp_Object *) xmalloc (len * sizeof (Lisp_Object)); | |
3583 | ||
3584 | /* Put all the overlays we want in a vector in overlay_vec. | |
3585 | Store the length in len. | |
3586 | endpos gets the position where the next overlay starts. */ | |
2a77a7d7 | 3587 | noverlays = overlays_at (XINT (pos), 1, &overlay_vec, &len, |
ac869cf7 | 3588 | &endpos, (int *) 0, 1); |
2eec3b4e RS |
3589 | |
3590 | /* If any of these overlays ends before endpos, | |
3591 | use its ending point instead. */ | |
3592 | for (i = 0; i < noverlays; i++) | |
3593 | { | |
3594 | Lisp_Object oend; | |
3595 | int oendpos; | |
3596 | ||
3597 | oend = OVERLAY_END (overlay_vec[i]); | |
3598 | oendpos = OVERLAY_POSITION (oend); | |
3599 | if (oendpos < endpos) | |
3600 | endpos = oendpos; | |
1ab256cb RM |
3601 | } |
3602 | ||
9ac0d9e0 | 3603 | xfree (overlay_vec); |
2eec3b4e RS |
3604 | return make_number (endpos); |
3605 | } | |
239c932b RS |
3606 | |
3607 | DEFUN ("previous-overlay-change", Fprevious_overlay_change, | |
3608 | Sprevious_overlay_change, 1, 1, 0, | |
3609 | "Return the previous position before POS where an overlay starts or ends.\n\ | |
624bbdc4 | 3610 | If there are no more overlay boundaries before POS, return (point-min).") |
239c932b RS |
3611 | (pos) |
3612 | Lisp_Object pos; | |
3613 | { | |
3614 | int noverlays; | |
3615 | int prevpos; | |
3616 | Lisp_Object *overlay_vec; | |
3617 | int len; | |
239c932b RS |
3618 | |
3619 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
3620 | ||
624bbdc4 RS |
3621 | /* At beginning of buffer, we know the answer; |
3622 | avoid bug subtracting 1 below. */ | |
3623 | if (XINT (pos) == BEGV) | |
3624 | return pos; | |
3625 | ||
017f0539 GM |
3626 | len = 10; |
3627 | overlay_vec = (Lisp_Object *) xmalloc (len * sizeof (Lisp_Object)); | |
3628 | ||
239c932b RS |
3629 | /* Put all the overlays we want in a vector in overlay_vec. |
3630 | Store the length in len. | |
daa1c109 | 3631 | prevpos gets the position of the previous change. */ |
2a77a7d7 | 3632 | noverlays = overlays_at (XINT (pos), 1, &overlay_vec, &len, |
ac869cf7 | 3633 | (int *) 0, &prevpos, 1); |
239c932b | 3634 | |
239c932b RS |
3635 | xfree (overlay_vec); |
3636 | return make_number (prevpos); | |
3637 | } | |
2eec3b4e RS |
3638 | \f |
3639 | /* These functions are for debugging overlays. */ | |
3640 | ||
3641 | DEFUN ("overlay-lists", Foverlay_lists, Soverlay_lists, 0, 0, 0, | |
3642 | "Return a pair of lists giving all the overlays of the current buffer.\n\ | |
3643 | The car has all the overlays before the overlay center;\n\ | |
bbe20e81 | 3644 | the cdr has all the overlays after the overlay center.\n\ |
2eec3b4e RS |
3645 | Recentering overlays moves overlays between these lists.\n\ |
3646 | The lists you get are copies, so that changing them has no effect.\n\ | |
3647 | However, the overlays you get are the real objects that the buffer uses.") | |
3648 | () | |
3649 | { | |
3650 | Lisp_Object before, after; | |
3651 | before = current_buffer->overlays_before; | |
3652 | if (CONSP (before)) | |
3653 | before = Fcopy_sequence (before); | |
3654 | after = current_buffer->overlays_after; | |
3655 | if (CONSP (after)) | |
3656 | after = Fcopy_sequence (after); | |
3657 | ||
3658 | return Fcons (before, after); | |
3659 | } | |
3660 | ||
3661 | DEFUN ("overlay-recenter", Foverlay_recenter, Soverlay_recenter, 1, 1, 0, | |
3662 | "Recenter the overlays of the current buffer around position POS.") | |
3663 | (pos) | |
3664 | Lisp_Object pos; | |
3665 | { | |
3666 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
3667 | ||
5c4f68f1 | 3668 | recenter_overlay_lists (current_buffer, XINT (pos)); |
2eec3b4e RS |
3669 | return Qnil; |
3670 | } | |
3671 | \f | |
3672 | DEFUN ("overlay-get", Foverlay_get, Soverlay_get, 2, 2, 0, | |
a2428fa2 | 3673 | "Get the property of overlay OVERLAY with property name PROP.") |
2eec3b4e RS |
3674 | (overlay, prop) |
3675 | Lisp_Object overlay, prop; | |
3676 | { | |
cab4777e | 3677 | Lisp_Object plist, fallback; |
52f8ec73 JB |
3678 | |
3679 | CHECK_OVERLAY (overlay, 0); | |
3680 | ||
cab4777e RS |
3681 | fallback = Qnil; |
3682 | ||
48e2e3ba | 3683 | for (plist = XOVERLAY (overlay)->plist; |
7539e11f KR |
3684 | CONSP (plist) && CONSP (XCDR (plist)); |
3685 | plist = XCDR (XCDR (plist))) | |
2eec3b4e | 3686 | { |
7539e11f KR |
3687 | if (EQ (XCAR (plist), prop)) |
3688 | return XCAR (XCDR (plist)); | |
3689 | else if (EQ (XCAR (plist), Qcategory)) | |
cab4777e RS |
3690 | { |
3691 | Lisp_Object tem; | |
3692 | tem = Fcar (Fcdr (plist)); | |
3693 | if (SYMBOLP (tem)) | |
3694 | fallback = Fget (tem, prop); | |
3695 | } | |
2eec3b4e | 3696 | } |
52f8ec73 | 3697 | |
cab4777e | 3698 | return fallback; |
2eec3b4e RS |
3699 | } |
3700 | ||
3701 | DEFUN ("overlay-put", Foverlay_put, Soverlay_put, 3, 3, 0, | |
3702 | "Set one property of overlay OVERLAY: give property PROP value VALUE.") | |
3703 | (overlay, prop, value) | |
3704 | Lisp_Object overlay, prop, value; | |
3705 | { | |
48e2e3ba | 3706 | Lisp_Object tail, buffer; |
9d7608b7 | 3707 | int changed; |
2eec3b4e | 3708 | |
52f8ec73 | 3709 | CHECK_OVERLAY (overlay, 0); |
b61982dd | 3710 | |
274a9425 RS |
3711 | buffer = Fmarker_buffer (OVERLAY_START (overlay)); |
3712 | ||
48e2e3ba | 3713 | for (tail = XOVERLAY (overlay)->plist; |
7539e11f KR |
3714 | CONSP (tail) && CONSP (XCDR (tail)); |
3715 | tail = XCDR (XCDR (tail))) | |
3716 | if (EQ (XCAR (tail), prop)) | |
274a9425 | 3717 | { |
7539e11f KR |
3718 | changed = !EQ (XCAR (XCDR (tail)), value); |
3719 | XCAR (XCDR (tail)) = value; | |
9d7608b7 | 3720 | goto found; |
274a9425 | 3721 | } |
9d7608b7 KH |
3722 | /* It wasn't in the list, so add it to the front. */ |
3723 | changed = !NILP (value); | |
48e2e3ba KH |
3724 | XOVERLAY (overlay)->plist |
3725 | = Fcons (prop, Fcons (value, XOVERLAY (overlay)->plist)); | |
9d7608b7 KH |
3726 | found: |
3727 | if (! NILP (buffer)) | |
3728 | { | |
3729 | if (changed) | |
876aa27c | 3730 | modify_overlay (XBUFFER (buffer), |
9d7608b7 KH |
3731 | marker_position (OVERLAY_START (overlay)), |
3732 | marker_position (OVERLAY_END (overlay))); | |
3733 | if (EQ (prop, Qevaporate) && ! NILP (value) | |
3734 | && (OVERLAY_POSITION (OVERLAY_START (overlay)) | |
3735 | == OVERLAY_POSITION (OVERLAY_END (overlay)))) | |
3736 | Fdelete_overlay (overlay); | |
3737 | } | |
2eec3b4e | 3738 | return value; |
1ab256cb RM |
3739 | } |
3740 | \f | |
9115729e KH |
3741 | /* Subroutine of report_overlay_modification. */ |
3742 | ||
3743 | /* Lisp vector holding overlay hook functions to call. | |
3744 | Vector elements come in pairs. | |
3745 | Each even-index element is a list of hook functions. | |
3746 | The following odd-index element is the overlay they came from. | |
3747 | ||
3748 | Before the buffer change, we fill in this vector | |
3749 | as we call overlay hook functions. | |
3750 | After the buffer change, we get the functions to call from this vector. | |
3751 | This way we always call the same functions before and after the change. */ | |
3752 | static Lisp_Object last_overlay_modification_hooks; | |
3753 | ||
3754 | /* Number of elements actually used in last_overlay_modification_hooks. */ | |
3755 | static int last_overlay_modification_hooks_used; | |
3756 | ||
3757 | /* Add one functionlist/overlay pair | |
3758 | to the end of last_overlay_modification_hooks. */ | |
3759 | ||
3760 | static void | |
3761 | add_overlay_mod_hooklist (functionlist, overlay) | |
3762 | Lisp_Object functionlist, overlay; | |
3763 | { | |
3764 | int oldsize = XVECTOR (last_overlay_modification_hooks)->size; | |
3765 | ||
3766 | if (last_overlay_modification_hooks_used == oldsize) | |
3767 | { | |
3768 | Lisp_Object old; | |
3769 | old = last_overlay_modification_hooks; | |
3770 | last_overlay_modification_hooks | |
3771 | = Fmake_vector (make_number (oldsize * 2), Qnil); | |
0b1f1b09 RS |
3772 | bcopy (XVECTOR (old)->contents, |
3773 | XVECTOR (last_overlay_modification_hooks)->contents, | |
9115729e KH |
3774 | sizeof (Lisp_Object) * oldsize); |
3775 | } | |
3776 | XVECTOR (last_overlay_modification_hooks)->contents[last_overlay_modification_hooks_used++] = functionlist; | |
3777 | XVECTOR (last_overlay_modification_hooks)->contents[last_overlay_modification_hooks_used++] = overlay; | |
3778 | } | |
3779 | \f | |
173f2a64 RS |
3780 | /* Run the modification-hooks of overlays that include |
3781 | any part of the text in START to END. | |
9115729e KH |
3782 | If this change is an insertion, also |
3783 | run the insert-before-hooks of overlay starting at END, | |
930a9140 RS |
3784 | and the insert-after-hooks of overlay ending at START. |
3785 | ||
3786 | This is called both before and after the modification. | |
3787 | AFTER is nonzero when we call after the modification. | |
3788 | ||
9115729e KH |
3789 | ARG1, ARG2, ARG3 are arguments to pass to the hook functions. |
3790 | When AFTER is nonzero, they are the start position, | |
3791 | the position after the inserted new text, | |
3792 | and the length of deleted or replaced old text. */ | |
173f2a64 RS |
3793 | |
3794 | void | |
930a9140 | 3795 | report_overlay_modification (start, end, after, arg1, arg2, arg3) |
173f2a64 | 3796 | Lisp_Object start, end; |
930a9140 RS |
3797 | int after; |
3798 | Lisp_Object arg1, arg2, arg3; | |
173f2a64 RS |
3799 | { |
3800 | Lisp_Object prop, overlay, tail; | |
9115729e KH |
3801 | /* 1 if this change is an insertion. */ |
3802 | int insertion = (after ? XFASTINT (arg3) == 0 : EQ (start, end)); | |
55b48893 | 3803 | int tail_copied; |
930a9140 | 3804 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
55b48893 RS |
3805 | |
3806 | overlay = Qnil; | |
3807 | tail = Qnil; | |
930a9140 | 3808 | GCPRO5 (overlay, tail, arg1, arg2, arg3); |
173f2a64 | 3809 | |
9115729e KH |
3810 | if (after) |
3811 | { | |
3812 | /* Call the functions recorded in last_overlay_modification_hooks | |
3813 | rather than scanning the overlays again. | |
3814 | First copy the vector contents, in case some of these hooks | |
3815 | do subsequent modification of the buffer. */ | |
3816 | int size = last_overlay_modification_hooks_used; | |
3817 | Lisp_Object *copy = (Lisp_Object *) alloca (size * sizeof (Lisp_Object)); | |
3818 | int i; | |
3819 | ||
3820 | bcopy (XVECTOR (last_overlay_modification_hooks)->contents, | |
3821 | copy, size * sizeof (Lisp_Object)); | |
3822 | gcpro1.var = copy; | |
3823 | gcpro1.nvars = size; | |
3824 | ||
3825 | for (i = 0; i < size;) | |
3826 | { | |
3827 | Lisp_Object prop, overlay; | |
3828 | prop = copy[i++]; | |
3829 | overlay = copy[i++]; | |
3830 | call_overlay_mod_hooks (prop, overlay, after, arg1, arg2, arg3); | |
3831 | } | |
3832 | UNGCPRO; | |
3833 | return; | |
3834 | } | |
3835 | ||
3836 | /* We are being called before a change. | |
3837 | Scan the overlays to find the functions to call. */ | |
3838 | last_overlay_modification_hooks_used = 0; | |
55b48893 | 3839 | tail_copied = 0; |
173f2a64 RS |
3840 | for (tail = current_buffer->overlays_before; |
3841 | CONSP (tail); | |
7539e11f | 3842 | tail = XCDR (tail)) |
173f2a64 RS |
3843 | { |
3844 | int startpos, endpos; | |
be8b1c6b | 3845 | Lisp_Object ostart, oend; |
173f2a64 | 3846 | |
7539e11f | 3847 | overlay = XCAR (tail); |
173f2a64 RS |
3848 | |
3849 | ostart = OVERLAY_START (overlay); | |
3850 | oend = OVERLAY_END (overlay); | |
3851 | endpos = OVERLAY_POSITION (oend); | |
3852 | if (XFASTINT (start) > endpos) | |
3853 | break; | |
3854 | startpos = OVERLAY_POSITION (ostart); | |
9115729e KH |
3855 | if (insertion && (XFASTINT (start) == startpos |
3856 | || XFASTINT (end) == startpos)) | |
173f2a64 RS |
3857 | { |
3858 | prop = Foverlay_get (overlay, Qinsert_in_front_hooks); | |
5fb5aa33 RS |
3859 | if (!NILP (prop)) |
3860 | { | |
3861 | /* Copy TAIL in case the hook recenters the overlay lists. */ | |
55b48893 RS |
3862 | if (!tail_copied) |
3863 | tail = Fcopy_sequence (tail); | |
3864 | tail_copied = 1; | |
930a9140 | 3865 | call_overlay_mod_hooks (prop, overlay, after, arg1, arg2, arg3); |
5fb5aa33 | 3866 | } |
173f2a64 | 3867 | } |
9115729e KH |
3868 | if (insertion && (XFASTINT (start) == endpos |
3869 | || XFASTINT (end) == endpos)) | |
173f2a64 RS |
3870 | { |
3871 | prop = Foverlay_get (overlay, Qinsert_behind_hooks); | |
5fb5aa33 RS |
3872 | if (!NILP (prop)) |
3873 | { | |
55b48893 RS |
3874 | if (!tail_copied) |
3875 | tail = Fcopy_sequence (tail); | |
3876 | tail_copied = 1; | |
930a9140 | 3877 | call_overlay_mod_hooks (prop, overlay, after, arg1, arg2, arg3); |
5fb5aa33 | 3878 | } |
173f2a64 | 3879 | } |
3bd13e92 KH |
3880 | /* Test for intersecting intervals. This does the right thing |
3881 | for both insertion and deletion. */ | |
3882 | if (XFASTINT (end) > startpos && XFASTINT (start) < endpos) | |
173f2a64 RS |
3883 | { |
3884 | prop = Foverlay_get (overlay, Qmodification_hooks); | |
5fb5aa33 RS |
3885 | if (!NILP (prop)) |
3886 | { | |
55b48893 RS |
3887 | if (!tail_copied) |
3888 | tail = Fcopy_sequence (tail); | |
3889 | tail_copied = 1; | |
930a9140 | 3890 | call_overlay_mod_hooks (prop, overlay, after, arg1, arg2, arg3); |
5fb5aa33 | 3891 | } |
173f2a64 RS |
3892 | } |
3893 | } | |
3894 | ||
55b48893 | 3895 | tail_copied = 0; |
173f2a64 RS |
3896 | for (tail = current_buffer->overlays_after; |
3897 | CONSP (tail); | |
7539e11f | 3898 | tail = XCDR (tail)) |
173f2a64 RS |
3899 | { |
3900 | int startpos, endpos; | |
be8b1c6b | 3901 | Lisp_Object ostart, oend; |
173f2a64 | 3902 | |
7539e11f | 3903 | overlay = XCAR (tail); |
173f2a64 RS |
3904 | |
3905 | ostart = OVERLAY_START (overlay); | |
3906 | oend = OVERLAY_END (overlay); | |
3907 | startpos = OVERLAY_POSITION (ostart); | |
cdf0b096 | 3908 | endpos = OVERLAY_POSITION (oend); |
173f2a64 RS |
3909 | if (XFASTINT (end) < startpos) |
3910 | break; | |
9115729e KH |
3911 | if (insertion && (XFASTINT (start) == startpos |
3912 | || XFASTINT (end) == startpos)) | |
173f2a64 RS |
3913 | { |
3914 | prop = Foverlay_get (overlay, Qinsert_in_front_hooks); | |
5fb5aa33 RS |
3915 | if (!NILP (prop)) |
3916 | { | |
55b48893 RS |
3917 | if (!tail_copied) |
3918 | tail = Fcopy_sequence (tail); | |
3919 | tail_copied = 1; | |
930a9140 | 3920 | call_overlay_mod_hooks (prop, overlay, after, arg1, arg2, arg3); |
5fb5aa33 | 3921 | } |
173f2a64 | 3922 | } |
9115729e KH |
3923 | if (insertion && (XFASTINT (start) == endpos |
3924 | || XFASTINT (end) == endpos)) | |
173f2a64 RS |
3925 | { |
3926 | prop = Foverlay_get (overlay, Qinsert_behind_hooks); | |
5fb5aa33 RS |
3927 | if (!NILP (prop)) |
3928 | { | |
55b48893 RS |
3929 | if (!tail_copied) |
3930 | tail = Fcopy_sequence (tail); | |
3931 | tail_copied = 1; | |
930a9140 | 3932 | call_overlay_mod_hooks (prop, overlay, after, arg1, arg2, arg3); |
5fb5aa33 | 3933 | } |
173f2a64 | 3934 | } |
3bd13e92 KH |
3935 | /* Test for intersecting intervals. This does the right thing |
3936 | for both insertion and deletion. */ | |
3937 | if (XFASTINT (end) > startpos && XFASTINT (start) < endpos) | |
173f2a64 RS |
3938 | { |
3939 | prop = Foverlay_get (overlay, Qmodification_hooks); | |
5fb5aa33 RS |
3940 | if (!NILP (prop)) |
3941 | { | |
55b48893 RS |
3942 | if (!tail_copied) |
3943 | tail = Fcopy_sequence (tail); | |
3944 | tail_copied = 1; | |
930a9140 | 3945 | call_overlay_mod_hooks (prop, overlay, after, arg1, arg2, arg3); |
5fb5aa33 | 3946 | } |
173f2a64 RS |
3947 | } |
3948 | } | |
55b48893 RS |
3949 | |
3950 | UNGCPRO; | |
173f2a64 RS |
3951 | } |
3952 | ||
3953 | static void | |
930a9140 RS |
3954 | call_overlay_mod_hooks (list, overlay, after, arg1, arg2, arg3) |
3955 | Lisp_Object list, overlay; | |
3956 | int after; | |
3957 | Lisp_Object arg1, arg2, arg3; | |
173f2a64 | 3958 | { |
930a9140 | 3959 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
9115729e | 3960 | |
930a9140 | 3961 | GCPRO4 (list, arg1, arg2, arg3); |
9115729e KH |
3962 | if (! after) |
3963 | add_overlay_mod_hooklist (list, overlay); | |
3964 | ||
173f2a64 RS |
3965 | while (!NILP (list)) |
3966 | { | |
930a9140 RS |
3967 | if (NILP (arg3)) |
3968 | call4 (Fcar (list), overlay, after ? Qt : Qnil, arg1, arg2); | |
3969 | else | |
3970 | call5 (Fcar (list), overlay, after ? Qt : Qnil, arg1, arg2, arg3); | |
173f2a64 RS |
3971 | list = Fcdr (list); |
3972 | } | |
3973 | UNGCPRO; | |
3974 | } | |
9d7608b7 KH |
3975 | |
3976 | /* Delete any zero-sized overlays at position POS, if the `evaporate' | |
3977 | property is set. */ | |
3978 | void | |
3979 | evaporate_overlays (pos) | |
3980 | int pos; | |
3981 | { | |
3982 | Lisp_Object tail, overlay, hit_list; | |
3983 | ||
3984 | hit_list = Qnil; | |
3985 | if (pos <= XFASTINT (current_buffer->overlay_center)) | |
3986 | for (tail = current_buffer->overlays_before; CONSP (tail); | |
7539e11f | 3987 | tail = XCDR (tail)) |
9d7608b7 KH |
3988 | { |
3989 | int endpos; | |
7539e11f | 3990 | overlay = XCAR (tail); |
9d7608b7 KH |
3991 | endpos = OVERLAY_POSITION (OVERLAY_END (overlay)); |
3992 | if (endpos < pos) | |
3993 | break; | |
3994 | if (endpos == pos && OVERLAY_POSITION (OVERLAY_START (overlay)) == pos | |
c3935f9d | 3995 | && ! NILP (Foverlay_get (overlay, Qevaporate))) |
9d7608b7 KH |
3996 | hit_list = Fcons (overlay, hit_list); |
3997 | } | |
3998 | else | |
3999 | for (tail = current_buffer->overlays_after; CONSP (tail); | |
7539e11f | 4000 | tail = XCDR (tail)) |
9d7608b7 KH |
4001 | { |
4002 | int startpos; | |
7539e11f | 4003 | overlay = XCAR (tail); |
9d7608b7 KH |
4004 | startpos = OVERLAY_POSITION (OVERLAY_START (overlay)); |
4005 | if (startpos > pos) | |
4006 | break; | |
4007 | if (startpos == pos && OVERLAY_POSITION (OVERLAY_END (overlay)) == pos | |
c3935f9d | 4008 | && ! NILP (Foverlay_get (overlay, Qevaporate))) |
9d7608b7 KH |
4009 | hit_list = Fcons (overlay, hit_list); |
4010 | } | |
7539e11f KR |
4011 | for (; CONSP (hit_list); hit_list = XCDR (hit_list)) |
4012 | Fdelete_overlay (XCAR (hit_list)); | |
9d7608b7 | 4013 | } |
173f2a64 | 4014 | \f |
54dfdeb0 | 4015 | /* Somebody has tried to store a value with an unacceptable type |
1bf08baf KH |
4016 | in the slot with offset OFFSET. */ |
4017 | ||
0fa3ba92 | 4018 | void |
54dfdeb0 KH |
4019 | buffer_slot_type_mismatch (offset) |
4020 | int offset; | |
0fa3ba92 | 4021 | { |
54dfdeb0 | 4022 | Lisp_Object sym; |
0fa3ba92 | 4023 | char *type_name; |
7c02e886 | 4024 | |
7313acd0 | 4025 | switch (XINT (PER_BUFFER_TYPE (offset))) |
0fa3ba92 | 4026 | { |
7c02e886 GM |
4027 | case Lisp_Int: |
4028 | type_name = "integers"; | |
4029 | break; | |
4030 | ||
4031 | case Lisp_String: | |
4032 | type_name = "strings"; | |
4033 | break; | |
4034 | ||
4035 | case Lisp_Symbol: | |
4036 | type_name = "symbols"; | |
4037 | break; | |
4038 | ||
0fa3ba92 JB |
4039 | default: |
4040 | abort (); | |
4041 | } | |
4042 | ||
7313acd0 | 4043 | sym = PER_BUFFER_SYMBOL (offset); |
1bf08baf | 4044 | error ("Only %s should be stored in the buffer-local variable %s", |
54dfdeb0 | 4045 | type_name, XSYMBOL (sym)->name->data); |
0fa3ba92 | 4046 | } |
7c02e886 | 4047 | |
0fa3ba92 | 4048 | \f |
dfcf069d | 4049 | void |
1ab256cb RM |
4050 | init_buffer_once () |
4051 | { | |
7c02e886 GM |
4052 | int idx; |
4053 | ||
4054 | bzero (buffer_permanent_local_flags, sizeof buffer_permanent_local_flags); | |
13de9290 | 4055 | |
1ab256cb RM |
4056 | /* Make sure all markable slots in buffer_defaults |
4057 | are initialized reasonably, so mark_buffer won't choke. */ | |
4058 | reset_buffer (&buffer_defaults); | |
13de9290 | 4059 | reset_buffer_local_variables (&buffer_defaults, 1); |
1ab256cb | 4060 | reset_buffer (&buffer_local_symbols); |
13de9290 | 4061 | reset_buffer_local_variables (&buffer_local_symbols, 1); |
336cd056 RS |
4062 | /* Prevent GC from getting confused. */ |
4063 | buffer_defaults.text = &buffer_defaults.own_text; | |
4064 | buffer_local_symbols.text = &buffer_local_symbols.own_text; | |
336cd056 RS |
4065 | BUF_INTERVALS (&buffer_defaults) = 0; |
4066 | BUF_INTERVALS (&buffer_local_symbols) = 0; | |
67180c6a KH |
4067 | XSETBUFFER (Vbuffer_defaults, &buffer_defaults); |
4068 | XSETBUFFER (Vbuffer_local_symbols, &buffer_local_symbols); | |
1ab256cb RM |
4069 | |
4070 | /* Set up the default values of various buffer slots. */ | |
4071 | /* Must do these before making the first buffer! */ | |
4072 | ||
f532dca0 | 4073 | /* real setup is done in bindings.el */ |
1ab256cb | 4074 | buffer_defaults.mode_line_format = build_string ("%-"); |
045dee35 | 4075 | buffer_defaults.header_line_format = Qnil; |
1ab256cb RM |
4076 | buffer_defaults.abbrev_mode = Qnil; |
4077 | buffer_defaults.overwrite_mode = Qnil; | |
4078 | buffer_defaults.case_fold_search = Qt; | |
4079 | buffer_defaults.auto_fill_function = Qnil; | |
4080 | buffer_defaults.selective_display = Qnil; | |
4081 | #ifndef old | |
4082 | buffer_defaults.selective_display_ellipses = Qt; | |
4083 | #endif | |
4084 | buffer_defaults.abbrev_table = Qnil; | |
4085 | buffer_defaults.display_table = Qnil; | |
1ab256cb | 4086 | buffer_defaults.undo_list = Qnil; |
c48f61ef | 4087 | buffer_defaults.mark_active = Qnil; |
be9aafdd | 4088 | buffer_defaults.file_format = Qnil; |
2eec3b4e RS |
4089 | buffer_defaults.overlays_before = Qnil; |
4090 | buffer_defaults.overlays_after = Qnil; | |
bbbe9545 | 4091 | XSETFASTINT (buffer_defaults.overlay_center, BEG); |
1ab256cb | 4092 | |
8d7a4592 | 4093 | XSETFASTINT (buffer_defaults.tab_width, 8); |
1ab256cb RM |
4094 | buffer_defaults.truncate_lines = Qnil; |
4095 | buffer_defaults.ctl_arrow = Qt; | |
3b06f880 | 4096 | buffer_defaults.direction_reversed = Qnil; |
bb2ec976 | 4097 | buffer_defaults.cursor_type = Qt; |
a3bbced0 | 4098 | buffer_defaults.extra_line_spacing = Qnil; |
1ab256cb | 4099 | |
f7975d07 | 4100 | #ifdef DOS_NT |
0776cb1b | 4101 | buffer_defaults.buffer_file_type = Qnil; /* TEXT */ |
54ad07d3 | 4102 | #endif |
a1a17b61 | 4103 | buffer_defaults.enable_multibyte_characters = Qt; |
c71b5d9b | 4104 | buffer_defaults.buffer_file_coding_system = Qnil; |
8d7a4592 KH |
4105 | XSETFASTINT (buffer_defaults.fill_column, 70); |
4106 | XSETFASTINT (buffer_defaults.left_margin, 0); | |
28e969dd | 4107 | buffer_defaults.cache_long_line_scans = Qnil; |
f6ed2e84 | 4108 | buffer_defaults.file_truename = Qnil; |
7962a441 | 4109 | XSETFASTINT (buffer_defaults.display_count, 0); |
0552666b GM |
4110 | buffer_defaults.indicate_empty_lines = Qnil; |
4111 | buffer_defaults.scroll_up_aggressively = Qnil; | |
4112 | buffer_defaults.scroll_down_aggressively = Qnil; | |
3fd364db | 4113 | buffer_defaults.display_time = Qnil; |
1ab256cb RM |
4114 | |
4115 | /* Assign the local-flags to the slots that have default values. | |
4116 | The local flag is a bit that is used in the buffer | |
4117 | to say that it has its own local value for the slot. | |
4118 | The local flag bits are in the local_var_flags slot of the buffer. */ | |
4119 | ||
4120 | /* Nothing can work if this isn't true */ | |
4d2f1389 | 4121 | if (sizeof (EMACS_INT) != sizeof (Lisp_Object)) abort (); |
1ab256cb RM |
4122 | |
4123 | /* 0 means not a lisp var, -1 means always local, else mask */ | |
4124 | bzero (&buffer_local_flags, sizeof buffer_local_flags); | |
aab80822 KH |
4125 | XSETINT (buffer_local_flags.filename, -1); |
4126 | XSETINT (buffer_local_flags.directory, -1); | |
4127 | XSETINT (buffer_local_flags.backed_up, -1); | |
4128 | XSETINT (buffer_local_flags.save_length, -1); | |
4129 | XSETINT (buffer_local_flags.auto_save_file_name, -1); | |
4130 | XSETINT (buffer_local_flags.read_only, -1); | |
4131 | XSETINT (buffer_local_flags.major_mode, -1); | |
4132 | XSETINT (buffer_local_flags.mode_name, -1); | |
4133 | XSETINT (buffer_local_flags.undo_list, -1); | |
4134 | XSETINT (buffer_local_flags.mark_active, -1); | |
943e065b | 4135 | XSETINT (buffer_local_flags.point_before_scroll, -1); |
f6ed2e84 | 4136 | XSETINT (buffer_local_flags.file_truename, -1); |
3cb719bd | 4137 | XSETINT (buffer_local_flags.invisibility_spec, -1); |
55ac8536 | 4138 | XSETINT (buffer_local_flags.file_format, -1); |
7962a441 | 4139 | XSETINT (buffer_local_flags.display_count, -1); |
3fd364db | 4140 | XSETINT (buffer_local_flags.display_time, -1); |
1bf08baf | 4141 | XSETINT (buffer_local_flags.enable_multibyte_characters, -1); |
8d7a4592 | 4142 | |
7c02e886 GM |
4143 | idx = 1; |
4144 | XSETFASTINT (buffer_local_flags.mode_line_format, idx); ++idx; | |
4145 | XSETFASTINT (buffer_local_flags.abbrev_mode, idx); ++idx; | |
4146 | XSETFASTINT (buffer_local_flags.overwrite_mode, idx); ++idx; | |
4147 | XSETFASTINT (buffer_local_flags.case_fold_search, idx); ++idx; | |
4148 | XSETFASTINT (buffer_local_flags.auto_fill_function, idx); ++idx; | |
4149 | XSETFASTINT (buffer_local_flags.selective_display, idx); ++idx; | |
1ab256cb | 4150 | #ifndef old |
7c02e886 | 4151 | XSETFASTINT (buffer_local_flags.selective_display_ellipses, idx); ++idx; |
1ab256cb | 4152 | #endif |
7c02e886 GM |
4153 | XSETFASTINT (buffer_local_flags.tab_width, idx); ++idx; |
4154 | XSETFASTINT (buffer_local_flags.truncate_lines, idx); ++idx; | |
4155 | XSETFASTINT (buffer_local_flags.ctl_arrow, idx); ++idx; | |
4156 | XSETFASTINT (buffer_local_flags.fill_column, idx); ++idx; | |
4157 | XSETFASTINT (buffer_local_flags.left_margin, idx); ++idx; | |
4158 | XSETFASTINT (buffer_local_flags.abbrev_table, idx); ++idx; | |
4159 | XSETFASTINT (buffer_local_flags.display_table, idx); ++idx; | |
f7975d07 | 4160 | #ifdef DOS_NT |
7c02e886 | 4161 | XSETFASTINT (buffer_local_flags.buffer_file_type, idx); |
13de9290 | 4162 | /* Make this one a permanent local. */ |
7c02e886 | 4163 | buffer_permanent_local_flags[idx++] = 1; |
54ad07d3 | 4164 | #endif |
7c02e886 GM |
4165 | XSETFASTINT (buffer_local_flags.syntax_table, idx); ++idx; |
4166 | XSETFASTINT (buffer_local_flags.cache_long_line_scans, idx); ++idx; | |
4167 | XSETFASTINT (buffer_local_flags.category_table, idx); ++idx; | |
4168 | XSETFASTINT (buffer_local_flags.direction_reversed, idx); ++idx; | |
4169 | XSETFASTINT (buffer_local_flags.buffer_file_coding_system, idx); | |
a1a17b61 | 4170 | /* Make this one a permanent local. */ |
7c02e886 GM |
4171 | buffer_permanent_local_flags[idx++] = 1; |
4172 | XSETFASTINT (buffer_local_flags.left_margin_width, idx); ++idx; | |
4173 | XSETFASTINT (buffer_local_flags.right_margin_width, idx); ++idx; | |
4174 | XSETFASTINT (buffer_local_flags.indicate_empty_lines, idx); ++idx; | |
4175 | XSETFASTINT (buffer_local_flags.scroll_up_aggressively, idx); ++idx; | |
4176 | XSETFASTINT (buffer_local_flags.scroll_down_aggressively, idx); ++idx; | |
4177 | XSETFASTINT (buffer_local_flags.header_line_format, idx); ++idx; | |
bd96bd79 | 4178 | XSETFASTINT (buffer_local_flags.cursor_type, idx); ++idx; |
a3bbced0 | 4179 | XSETFASTINT (buffer_local_flags.extra_line_spacing, idx); ++idx; |
7c02e886 GM |
4180 | |
4181 | /* Need more room? */ | |
7313acd0 | 4182 | if (idx >= MAX_PER_BUFFER_VARS) |
7c02e886 | 4183 | abort (); |
7313acd0 | 4184 | last_per_buffer_idx = idx; |
c71b5d9b | 4185 | |
1ab256cb RM |
4186 | Vbuffer_alist = Qnil; |
4187 | current_buffer = 0; | |
4188 | all_buffers = 0; | |
4189 | ||
4190 | QSFundamental = build_string ("Fundamental"); | |
4191 | ||
4192 | Qfundamental_mode = intern ("fundamental-mode"); | |
4193 | buffer_defaults.major_mode = Qfundamental_mode; | |
4194 | ||
4195 | Qmode_class = intern ("mode-class"); | |
4196 | ||
4197 | Qprotected_field = intern ("protected-field"); | |
4198 | ||
4199 | Qpermanent_local = intern ("permanent-local"); | |
4200 | ||
4201 | Qkill_buffer_hook = intern ("kill-buffer-hook"); | |
4202 | ||
4203 | Vprin1_to_string_buffer = Fget_buffer_create (build_string (" prin1")); | |
000f8083 | 4204 | |
1ab256cb RM |
4205 | /* super-magic invisible buffer */ |
4206 | Vbuffer_alist = Qnil; | |
4207 | ||
ffd56f97 | 4208 | Fset_buffer (Fget_buffer_create (build_string ("*scratch*"))); |
7775635d KH |
4209 | |
4210 | inhibit_modification_hooks = 0; | |
1ab256cb RM |
4211 | } |
4212 | ||
dfcf069d | 4213 | void |
1ab256cb RM |
4214 | init_buffer () |
4215 | { | |
4216 | char buf[MAXPATHLEN+1]; | |
2381d133 JB |
4217 | char *pwd; |
4218 | struct stat dotstat, pwdstat; | |
136351b7 | 4219 | Lisp_Object temp; |
f7975d07 | 4220 | int rc; |
1ab256cb RM |
4221 | |
4222 | Fset_buffer (Fget_buffer_create (build_string ("*scratch*"))); | |
3d871c85 RS |
4223 | if (NILP (buffer_defaults.enable_multibyte_characters)) |
4224 | Fset_buffer_multibyte (Qnil); | |
2381d133 JB |
4225 | |
4226 | /* If PWD is accurate, use it instead of calling getwd. This is faster | |
4227 | when PWD is right, and may avoid a fatal error. */ | |
309f2a6e RS |
4228 | if ((pwd = getenv ("PWD")) != 0 |
4229 | && (IS_DIRECTORY_SEP (*pwd) || (*pwd && IS_DEVICE_SEP (pwd[1]))) | |
2381d133 JB |
4230 | && stat (pwd, &pwdstat) == 0 |
4231 | && stat (".", &dotstat) == 0 | |
4232 | && dotstat.st_ino == pwdstat.st_ino | |
4233 | && dotstat.st_dev == pwdstat.st_dev | |
4234 | && strlen (pwd) < MAXPATHLEN) | |
4235 | strcpy (buf, pwd); | |
6335beb0 RS |
4236 | #ifdef HAVE_GETCWD |
4237 | else if (getcwd (buf, MAXPATHLEN+1) == 0) | |
9dde47f5 | 4238 | fatal ("`getcwd' failed: %s\n", strerror (errno)); |
6335beb0 | 4239 | #else |
2381d133 | 4240 | else if (getwd (buf) == 0) |
cf1e6391 | 4241 | fatal ("`getwd' failed: %s\n", buf); |
6335beb0 | 4242 | #endif |
1ab256cb RM |
4243 | |
4244 | #ifndef VMS | |
4245 | /* Maybe this should really use some standard subroutine | |
4246 | whose definition is filename syntax dependent. */ | |
f7975d07 RS |
4247 | rc = strlen (buf); |
4248 | if (!(IS_DIRECTORY_SEP (buf[rc - 1]))) | |
4249 | { | |
4250 | buf[rc] = DIRECTORY_SEP; | |
4251 | buf[rc + 1] = '\0'; | |
4252 | } | |
1ab256cb | 4253 | #endif /* not VMS */ |
0995fa35 | 4254 | |
1ab256cb | 4255 | current_buffer->directory = build_string (buf); |
136351b7 | 4256 | |
0995fa35 RS |
4257 | /* Add /: to the front of the name |
4258 | if it would otherwise be treated as magic. */ | |
4259 | temp = Ffind_file_name_handler (current_buffer->directory, Qt); | |
81ab2e07 KH |
4260 | if (! NILP (temp) |
4261 | /* If the default dir is just /, TEMP is non-nil | |
4262 | because of the ange-ftp completion handler. | |
4263 | However, it is not necessary to turn / into /:/. | |
4264 | So avoid doing that. */ | |
4265 | && strcmp ("/", XSTRING (current_buffer->directory)->data)) | |
0995fa35 RS |
4266 | current_buffer->directory |
4267 | = concat2 (build_string ("/:"), current_buffer->directory); | |
4268 | ||
136351b7 RS |
4269 | temp = get_minibuffer (0); |
4270 | XBUFFER (temp)->directory = current_buffer->directory; | |
1ab256cb RM |
4271 | } |
4272 | ||
4273 | /* initialize the buffer routines */ | |
dfcf069d | 4274 | void |
1ab256cb RM |
4275 | syms_of_buffer () |
4276 | { | |
9115729e KH |
4277 | staticpro (&last_overlay_modification_hooks); |
4278 | last_overlay_modification_hooks | |
4279 | = Fmake_vector (make_number (10), Qnil); | |
4280 | ||
1ab256cb RM |
4281 | staticpro (&Vbuffer_defaults); |
4282 | staticpro (&Vbuffer_local_symbols); | |
4283 | staticpro (&Qfundamental_mode); | |
4284 | staticpro (&Qmode_class); | |
4285 | staticpro (&QSFundamental); | |
4286 | staticpro (&Vbuffer_alist); | |
4287 | staticpro (&Qprotected_field); | |
4288 | staticpro (&Qpermanent_local); | |
4289 | staticpro (&Qkill_buffer_hook); | |
22378665 | 4290 | Qoverlayp = intern ("overlayp"); |
52f8ec73 | 4291 | staticpro (&Qoverlayp); |
9d7608b7 KH |
4292 | Qevaporate = intern ("evaporate"); |
4293 | staticpro (&Qevaporate); | |
294d215f | 4294 | Qmodification_hooks = intern ("modification-hooks"); |
22378665 | 4295 | staticpro (&Qmodification_hooks); |
294d215f | 4296 | Qinsert_in_front_hooks = intern ("insert-in-front-hooks"); |
22378665 | 4297 | staticpro (&Qinsert_in_front_hooks); |
294d215f | 4298 | Qinsert_behind_hooks = intern ("insert-behind-hooks"); |
22378665 | 4299 | staticpro (&Qinsert_behind_hooks); |
5fe0b67e | 4300 | Qget_file_buffer = intern ("get-file-buffer"); |
22378665 | 4301 | staticpro (&Qget_file_buffer); |
5985d248 KH |
4302 | Qpriority = intern ("priority"); |
4303 | staticpro (&Qpriority); | |
4304 | Qwindow = intern ("window"); | |
4305 | staticpro (&Qwindow); | |
bbbe9545 KH |
4306 | Qbefore_string = intern ("before-string"); |
4307 | staticpro (&Qbefore_string); | |
4308 | Qafter_string = intern ("after-string"); | |
4309 | staticpro (&Qafter_string); | |
22378665 RS |
4310 | Qfirst_change_hook = intern ("first-change-hook"); |
4311 | staticpro (&Qfirst_change_hook); | |
4312 | Qbefore_change_functions = intern ("before-change-functions"); | |
4313 | staticpro (&Qbefore_change_functions); | |
4314 | Qafter_change_functions = intern ("after-change-functions"); | |
4315 | staticpro (&Qafter_change_functions); | |
1ab256cb RM |
4316 | |
4317 | Fput (Qprotected_field, Qerror_conditions, | |
4318 | Fcons (Qprotected_field, Fcons (Qerror, Qnil))); | |
4319 | Fput (Qprotected_field, Qerror_message, | |
4320 | build_string ("Attempt to modify a protected field")); | |
4321 | ||
4322 | /* All these use DEFVAR_LISP_NOPRO because the slots in | |
4323 | buffer_defaults will all be marked via Vbuffer_defaults. */ | |
4324 | ||
4325 | DEFVAR_LISP_NOPRO ("default-mode-line-format", | |
4326 | &buffer_defaults.mode_line_format, | |
4327 | "Default value of `mode-line-format' for buffers that don't override it.\n\ | |
4328 | This is the same as (default-value 'mode-line-format)."); | |
4329 | ||
045dee35 GM |
4330 | DEFVAR_LISP_NOPRO ("default-header-line-format", |
4331 | &buffer_defaults.header_line_format, | |
4332 | "Default value of `header-line-format' for buffers that don't override it.\n\ | |
4333 | This is the same as (default-value 'header-line-format)."); | |
0552666b | 4334 | |
bd96bd79 GM |
4335 | DEFVAR_LISP_NOPRO ("default-cursor-type", &buffer_defaults.cursor_type, |
4336 | "Default value of `cursor-type' for buffers that don't override it.\n\ | |
4337 | This is the same as (default-value 'cursor-type)."); | |
4338 | ||
a3bbced0 GM |
4339 | DEFVAR_LISP_NOPRO ("default-line-spacing", |
4340 | &buffer_defaults.extra_line_spacing, | |
4341 | "Default value of `line-spacing' for buffers that don't override it.\n\ | |
4342 | This is the same as (default-value 'line-spacing)."); | |
4343 | ||
1ab256cb RM |
4344 | DEFVAR_LISP_NOPRO ("default-abbrev-mode", |
4345 | &buffer_defaults.abbrev_mode, | |
4346 | "Default value of `abbrev-mode' for buffers that do not override it.\n\ | |
4347 | This is the same as (default-value 'abbrev-mode)."); | |
4348 | ||
4349 | DEFVAR_LISP_NOPRO ("default-ctl-arrow", | |
4350 | &buffer_defaults.ctl_arrow, | |
4351 | "Default value of `ctl-arrow' for buffers that do not override it.\n\ | |
4352 | This is the same as (default-value 'ctl-arrow)."); | |
4353 | ||
3b06f880 KH |
4354 | DEFVAR_LISP_NOPRO ("default-direction-reversed", |
4355 | &buffer_defaults.direction_reversed, | |
4356 | "Default value of `direction_reversed' for buffers that do not override it.\n\ | |
4357 | This is the same as (default-value 'direction-reversed)."); | |
4358 | ||
a1a17b61 KH |
4359 | DEFVAR_LISP_NOPRO ("default-enable-multibyte-characters", |
4360 | &buffer_defaults.enable_multibyte_characters, | |
ed8300d9 | 4361 | "*Default value of `enable-multibyte-characters' for buffers not overriding it.\n\ |
53fe786d | 4362 | This is the same as (default-value 'enable-multibyte-characters)."); |
a1a17b61 | 4363 | |
c71b5d9b KH |
4364 | DEFVAR_LISP_NOPRO ("default-buffer-file-coding-system", |
4365 | &buffer_defaults.buffer_file_coding_system, | |
4366 | "Default value of `buffer-file-coding-system' for buffers not overriding it.\n\ | |
53fe786d | 4367 | This is the same as (default-value 'buffer-file-coding-system)."); |
c71b5d9b | 4368 | |
1ab256cb RM |
4369 | DEFVAR_LISP_NOPRO ("default-truncate-lines", |
4370 | &buffer_defaults.truncate_lines, | |
4371 | "Default value of `truncate-lines' for buffers that do not override it.\n\ | |
4372 | This is the same as (default-value 'truncate-lines)."); | |
4373 | ||
4374 | DEFVAR_LISP_NOPRO ("default-fill-column", | |
4375 | &buffer_defaults.fill_column, | |
4376 | "Default value of `fill-column' for buffers that do not override it.\n\ | |
4377 | This is the same as (default-value 'fill-column)."); | |
4378 | ||
4379 | DEFVAR_LISP_NOPRO ("default-left-margin", | |
4380 | &buffer_defaults.left_margin, | |
4381 | "Default value of `left-margin' for buffers that do not override it.\n\ | |
4382 | This is the same as (default-value 'left-margin)."); | |
4383 | ||
4384 | DEFVAR_LISP_NOPRO ("default-tab-width", | |
4385 | &buffer_defaults.tab_width, | |
4386 | "Default value of `tab-width' for buffers that do not override it.\n\ | |
4387 | This is the same as (default-value 'tab-width)."); | |
4388 | ||
4389 | DEFVAR_LISP_NOPRO ("default-case-fold-search", | |
4390 | &buffer_defaults.case_fold_search, | |
4391 | "Default value of `case-fold-search' for buffers that don't override it.\n\ | |
4392 | This is the same as (default-value 'case-fold-search)."); | |
4393 | ||
f7975d07 | 4394 | #ifdef DOS_NT |
54ad07d3 RS |
4395 | DEFVAR_LISP_NOPRO ("default-buffer-file-type", |
4396 | &buffer_defaults.buffer_file_type, | |
4397 | "Default file type for buffers that do not override it.\n\ | |
4398 | This is the same as (default-value 'buffer-file-type).\n\ | |
4399 | The file type is nil for text, t for binary."); | |
4400 | #endif | |
4401 | ||
0552666b GM |
4402 | DEFVAR_LISP_NOPRO ("default-left-margin-width", |
4403 | &buffer_defaults.left_margin_width, | |
4404 | "Default value of `left-margin-width' for buffers that don't override it.\n\ | |
4405 | This is the same as (default-value 'left-margin-width)."); | |
4406 | ||
4407 | DEFVAR_LISP_NOPRO ("default-right-margin-width", | |
4408 | &buffer_defaults.right_margin_width, | |
4409 | "Default value of `right_margin_width' for buffers that don't override it.\n\ | |
4410 | This is the same as (default-value 'right-margin-width)."); | |
4411 | ||
4412 | DEFVAR_LISP_NOPRO ("default-indicate-empty-lines", | |
4413 | &buffer_defaults.indicate_empty_lines, | |
4414 | "Default value of `indicate-empty-lines' for buffers that don't override it.\n\ | |
4415 | This is the same as (default-value 'indicate-empty-lines)."); | |
4416 | ||
4417 | DEFVAR_LISP_NOPRO ("default-scroll-up-aggressively", | |
4418 | &buffer_defaults.scroll_up_aggressively, | |
4419 | "Default value of `scroll-up-aggressively' for buffers that\n\ | |
4420 | don't override it. This is the same as (default-value\n\ | |
4421 | 'scroll-up-aggressively)."); | |
4422 | ||
4423 | DEFVAR_LISP_NOPRO ("default-scroll-down-aggressively", | |
4424 | &buffer_defaults.scroll_down_aggressively, | |
4425 | "Default value of `scroll-down-aggressively' for buffers that\n\ | |
4426 | don't override it. This is the same as (default-value\n\ | |
4427 | 'scroll-down-aggressively)."); | |
4428 | ||
045dee35 GM |
4429 | DEFVAR_PER_BUFFER ("header-line-format", |
4430 | ¤t_buffer->header_line_format, | |
0552666b GM |
4431 | Qnil, |
4432 | "Analogous to `mode-line-format', but for a mode line displayed\n\ | |
4433 | at the top of windows."); | |
4434 | ||
0fa3ba92 JB |
4435 | DEFVAR_PER_BUFFER ("mode-line-format", ¤t_buffer->mode_line_format, |
4436 | Qnil, 0); | |
1ab256cb RM |
4437 | |
4438 | /* This doc string is too long for cpp; cpp dies if it isn't in a comment. | |
4439 | But make-docfile finds it! | |
4440 | DEFVAR_PER_BUFFER ("mode-line-format", ¤t_buffer->mode_line_format, | |
bec44fd6 | 4441 | Qnil, |
1ab256cb RM |
4442 | "Template for displaying mode line for current buffer.\n\ |
4443 | Each buffer has its own value of this variable.\n\ | |
0552666b GM |
4444 | Value may be nil, a string, a symbol or a list or cons cell.\n\ |
4445 | A value of nil means don't display a mode line.\n\ | |
1ab256cb RM |
4446 | For a symbol, its value is used (but it is ignored if t or nil).\n\ |
4447 | A string appearing directly as the value of a symbol is processed verbatim\n\ | |
4448 | in that the %-constructs below are not recognized.\n\ | |
fe512f27 GM |
4449 | For a list of the form `(:eval FORM)', FORM is evaluated and the result\n\ |
4450 | is used as a mode line element.\n\ | |
1ab256cb RM |
4451 | For a list whose car is a symbol, the symbol's value is taken,\n\ |
4452 | and if that is non-nil, the cadr of the list is processed recursively.\n\ | |
4453 | Otherwise, the caddr of the list (if there is one) is processed.\n\ | |
4454 | For a list whose car is a string or list, each element is processed\n\ | |
4455 | recursively and the results are effectively concatenated.\n\ | |
4456 | For a list whose car is an integer, the cdr of the list is processed\n\ | |
4457 | and padded (if the number is positive) or truncated (if negative)\n\ | |
4458 | to the width specified by that number.\n\ | |
4459 | A string is printed verbatim in the mode line except for %-constructs:\n\ | |
4460 | (%-constructs are allowed when the string is the entire mode-line-format\n\ | |
4461 | or when it is found in a cons-cell or a list)\n\ | |
4462 | %b -- print buffer name. %f -- print visited file name.\n\ | |
5d516f2d | 4463 | %F -- print frame name.\n\ |
c2ff34f7 | 4464 | %* -- print %, * or hyphen. %+ -- print *, % or hyphen.\n\ |
08de6200 | 4465 | %& is like %*, but ignore read-only-ness.\n\ |
c2ff34f7 RS |
4466 | % means buffer is read-only and * means it is modified.\n\ |
4467 | For a modified read-only buffer, %* gives % and %+ gives *.\n\ | |
a97c374a | 4468 | %s -- print process status. %l -- print the current line number.\n\ |
07924294 | 4469 | %c -- print the current column number (this makes editing slower).\n\ |
6a567ad8 RS |
4470 | To make the column number update correctly in all cases,\n\ |
4471 | `column-number-mode' must be non-nil.\n\ | |
dd24e6a6 | 4472 | %p -- print percent of buffer above top of window, or Top, Bot or All.\n\ |
9d130ffc | 4473 | %P -- print percent of buffer above bottom of window, perhaps plus Top,\n\ |
dd24e6a6 | 4474 | or print Bottom or All.\n\ |
08de6200 | 4475 | %m -- print the mode name.\n\ |
1ab256cb | 4476 | %n -- print Narrow if appropriate.\n\ |
08de6200 EZ |
4477 | %z -- print mnemonics of buffer, terminal, and keyboard coding systems.\n\ |
4478 | %Z -- like %z, but including the end-of-line format.\n\ | |
1ab256cb RM |
4479 | %[ -- print one [ for each recursive editing level. %] similar.\n\ |
4480 | %% -- print %. %- -- print infinitely many dashes.\n\ | |
4481 | Decimal digits after the % specify field width to which to pad."); | |
4482 | */ | |
4483 | ||
4484 | DEFVAR_LISP_NOPRO ("default-major-mode", &buffer_defaults.major_mode, | |
4485 | "*Major mode for new buffers. Defaults to `fundamental-mode'.\n\ | |
4486 | nil here means use current buffer's major mode."); | |
4487 | ||
4488 | DEFVAR_PER_BUFFER ("major-mode", ¤t_buffer->major_mode, | |
0fa3ba92 | 4489 | make_number (Lisp_Symbol), |
1ab256cb RM |
4490 | "Symbol for current buffer's major mode."); |
4491 | ||
4492 | DEFVAR_PER_BUFFER ("mode-name", ¤t_buffer->mode_name, | |
0fa3ba92 | 4493 | make_number (Lisp_String), |
1ab256cb RM |
4494 | "Pretty name of current buffer's major mode (a string)."); |
4495 | ||
0fa3ba92 | 4496 | DEFVAR_PER_BUFFER ("abbrev-mode", ¤t_buffer->abbrev_mode, Qnil, |
1ab256cb RM |
4497 | "Non-nil turns on automatic expansion of abbrevs as they are inserted.\n\ |
4498 | Automatically becomes buffer-local when set in any fashion."); | |
4499 | ||
4500 | DEFVAR_PER_BUFFER ("case-fold-search", ¤t_buffer->case_fold_search, | |
0fa3ba92 | 4501 | Qnil, |
5ed62574 | 4502 | "*Non-nil if searches and matches should ignore case.\n\ |
1ab256cb RM |
4503 | Automatically becomes buffer-local when set in any fashion."); |
4504 | ||
4505 | DEFVAR_PER_BUFFER ("fill-column", ¤t_buffer->fill_column, | |
0fa3ba92 | 4506 | make_number (Lisp_Int), |
1ab256cb RM |
4507 | "*Column beyond which automatic line-wrapping should happen.\n\ |
4508 | Automatically becomes buffer-local when set in any fashion."); | |
4509 | ||
4510 | DEFVAR_PER_BUFFER ("left-margin", ¤t_buffer->left_margin, | |
0fa3ba92 | 4511 | make_number (Lisp_Int), |
1ab256cb RM |
4512 | "*Column for the default indent-line-function to indent to.\n\ |
4513 | Linefeed indents to this column in Fundamental mode.\n\ | |
4514 | Automatically becomes buffer-local when set in any fashion."); | |
4515 | ||
4516 | DEFVAR_PER_BUFFER ("tab-width", ¤t_buffer->tab_width, | |
0fa3ba92 | 4517 | make_number (Lisp_Int), |
1ab256cb RM |
4518 | "*Distance between tab stops (for display of tab characters), in columns.\n\ |
4519 | Automatically becomes buffer-local when set in any fashion."); | |
4520 | ||
0fa3ba92 | 4521 | DEFVAR_PER_BUFFER ("ctl-arrow", ¤t_buffer->ctl_arrow, Qnil, |
1ab256cb | 4522 | "*Non-nil means display control chars with uparrow.\n\ |
6a99d31d | 4523 | A value of nil means use backslash and octal digits.\n\ |
1ab256cb RM |
4524 | Automatically becomes buffer-local when set in any fashion.\n\ |
4525 | This variable does not apply to characters whose display is specified\n\ | |
4526 | in the current display table (if there is one)."); | |
4527 | ||
3b06f880 | 4528 | DEFVAR_PER_BUFFER ("enable-multibyte-characters", |
1bf08baf KH |
4529 | ¤t_buffer->enable_multibyte_characters, |
4530 | make_number (-1), | |
36bb26f7 | 4531 | "Non-nil means the buffer contents are regarded as multi-byte characters.\n\ |
ed218f73 | 4532 | Otherwise they are regarded as unibyte. This affects the display,\n\ |
53fe786d RS |
4533 | file I/O and the behavior of various editing commands.\n\ |
4534 | \n\ | |
4535 | This variable is buffer-local but you cannot set it directly;\n\ | |
4536 | use the function `set-buffer-multibyte' to change a buffer's representation.\n\ | |
4537 | Changing its default value with `setq-default' is supported.\n\ | |
4538 | See also variable `default-enable-multibyte-characters' and Info node\n\ | |
4539 | `(elisp)Text Representations'."); | |
3b06f880 | 4540 | |
c71b5d9b KH |
4541 | DEFVAR_PER_BUFFER ("buffer-file-coding-system", |
4542 | ¤t_buffer->buffer_file_coding_system, Qnil, | |
4543 | "Coding system to be used for encoding the buffer contents on saving.\n\ | |
940daec1 RS |
4544 | This variable applies to saving the buffer, and also to `write-region'\n\ |
4545 | and other functions that use `write-region'.\n\ | |
4546 | It does not apply to sending output to subprocesses, however.\n\ | |
4547 | \n\ | |
4548 | If this is nil, the buffer is saved without any code conversion\n\ | |
4549 | unless some coding system is specified in `file-coding-system-alist'\n\ | |
c71b5d9b KH |
4550 | for the buffer file.\n\ |
4551 | \n\ | |
940daec1 RS |
4552 | The variable `coding-system-for-write', if non-nil, overrides this variable.\n\ |
4553 | \n\ | |
c71b5d9b KH |
4554 | This variable is never applied to a way of decoding\n\ |
4555 | a file while reading it."); | |
4556 | ||
3b06f880 KH |
4557 | DEFVAR_PER_BUFFER ("direction-reversed", ¤t_buffer->direction_reversed, |
4558 | Qnil, | |
4559 | "*Non-nil means lines in the buffer are displayed right to left."); | |
4560 | ||
0fa3ba92 | 4561 | DEFVAR_PER_BUFFER ("truncate-lines", ¤t_buffer->truncate_lines, Qnil, |
1ab256cb RM |
4562 | "*Non-nil means do not display continuation lines;\n\ |
4563 | give each line of text one screen line.\n\ | |
4564 | Automatically becomes buffer-local when set in any fashion.\n\ | |
4565 | \n\ | |
4566 | Note that this is overridden by the variable\n\ | |
4567 | `truncate-partial-width-windows' if that variable is non-nil\n\ | |
502b9b64 | 4568 | and this buffer is not full-frame width."); |
1ab256cb | 4569 | |
f7975d07 | 4570 | #ifdef DOS_NT |
54ad07d3 RS |
4571 | DEFVAR_PER_BUFFER ("buffer-file-type", ¤t_buffer->buffer_file_type, |
4572 | Qnil, | |
006d3d34 RS |
4573 | "Non-nil if the visited file is a binary file.\n\ |
4574 | This variable is meaningful on MS-DOG and Windows NT.\n\ | |
4575 | On those systems, it is automatically local in every buffer.\n\ | |
e0585c64 | 4576 | On other systems, this variable is normally always nil."); |
54ad07d3 RS |
4577 | #endif |
4578 | ||
1ab256cb | 4579 | DEFVAR_PER_BUFFER ("default-directory", ¤t_buffer->directory, |
0fa3ba92 | 4580 | make_number (Lisp_String), |
1ab256cb RM |
4581 | "Name of default directory of current buffer. Should end with slash.\n\ |
4582 | Each buffer has its own value of this variable."); | |
4583 | ||
4584 | DEFVAR_PER_BUFFER ("auto-fill-function", ¤t_buffer->auto_fill_function, | |
0fa3ba92 | 4585 | Qnil, |
1ab256cb | 4586 | "Function called (if non-nil) to perform auto-fill.\n\ |
139f13a7 | 4587 | It is called after self-inserting any character specified in\n\ |
6c9a7472 | 4588 | the `auto-fill-chars' table.\n\ |
1ab256cb | 4589 | Each buffer has its own value of this variable.\n\ |
54158e68 KH |
4590 | NOTE: This variable is not a hook;\n\ |
4591 | its value may not be a list of functions."); | |
1ab256cb RM |
4592 | |
4593 | DEFVAR_PER_BUFFER ("buffer-file-name", ¤t_buffer->filename, | |
0fa3ba92 | 4594 | make_number (Lisp_String), |
1ab256cb RM |
4595 | "Name of file visited in current buffer, or nil if not visiting a file.\n\ |
4596 | Each buffer has its own value of this variable."); | |
4597 | ||
f6ed2e84 RS |
4598 | DEFVAR_PER_BUFFER ("buffer-file-truename", ¤t_buffer->file_truename, |
4599 | make_number (Lisp_String), | |
bb4c204e | 4600 | "Abbreviated truename of file visited in current buffer, or nil if none.\n\ |
b1c03e64 RS |
4601 | The truename of a file is calculated by `file-truename'\n\ |
4602 | and then abbreviated with `abbreviate-file-name'.\n\ | |
f6ed2e84 RS |
4603 | Each buffer has its own value of this variable."); |
4604 | ||
1ab256cb | 4605 | DEFVAR_PER_BUFFER ("buffer-auto-save-file-name", |
3f5fcd47 | 4606 | ¤t_buffer->auto_save_file_name, |
0fa3ba92 | 4607 | make_number (Lisp_String), |
1ab256cb RM |
4608 | "Name of file for auto-saving current buffer,\n\ |
4609 | or nil if buffer should not be auto-saved.\n\ | |
4610 | Each buffer has its own value of this variable."); | |
4611 | ||
0fa3ba92 | 4612 | DEFVAR_PER_BUFFER ("buffer-read-only", ¤t_buffer->read_only, Qnil, |
1ab256cb RM |
4613 | "Non-nil if this buffer is read-only.\n\ |
4614 | Each buffer has its own value of this variable."); | |
4615 | ||
0fa3ba92 | 4616 | DEFVAR_PER_BUFFER ("buffer-backed-up", ¤t_buffer->backed_up, Qnil, |
1ab256cb RM |
4617 | "Non-nil if this buffer's file has been backed up.\n\ |
4618 | Backing up is done before the first time the file is saved.\n\ | |
4619 | Each buffer has its own value of this variable."); | |
4620 | ||
4621 | DEFVAR_PER_BUFFER ("buffer-saved-size", ¤t_buffer->save_length, | |
0fa3ba92 | 4622 | make_number (Lisp_Int), |
1ab256cb RM |
4623 | "Length of current buffer when last read in, saved or auto-saved.\n\ |
4624 | 0 initially.\n\ | |
4625 | Each buffer has its own value of this variable."); | |
4626 | ||
4627 | DEFVAR_PER_BUFFER ("selective-display", ¤t_buffer->selective_display, | |
0fa3ba92 | 4628 | Qnil, |
1ab256cb RM |
4629 | "Non-nil enables selective display:\n\ |
4630 | Integer N as value means display only lines\n\ | |
4631 | that start with less than n columns of space.\n\ | |
4632 | A value of t means, after a ^M, all the rest of the line is invisible.\n\ | |
4633 | Then ^M's in the file are written into files as newlines.\n\n\ | |
4634 | Automatically becomes buffer-local when set in any fashion."); | |
4635 | ||
4636 | #ifndef old | |
4637 | DEFVAR_PER_BUFFER ("selective-display-ellipses", | |
4638 | ¤t_buffer->selective_display_ellipses, | |
0fa3ba92 | 4639 | Qnil, |
1ab256cb RM |
4640 | "t means display ... on previous line when a line is invisible.\n\ |
4641 | Automatically becomes buffer-local when set in any fashion."); | |
4642 | #endif | |
4643 | ||
0fa3ba92 | 4644 | DEFVAR_PER_BUFFER ("overwrite-mode", ¤t_buffer->overwrite_mode, Qnil, |
1ab256cb | 4645 | "Non-nil if self-insertion should replace existing text.\n\ |
5e05d0a5 RS |
4646 | The value should be one of `overwrite-mode-textual',\n\ |
4647 | `overwrite-mode-binary', or nil.\n\ | |
4648 | If it is `overwrite-mode-textual', self-insertion still\n\ | |
6bbb0d4a | 4649 | inserts at the end of a line, and inserts when point is before a tab,\n\ |
2e94b813 | 4650 | until the tab is filled in.\n\ |
6bbb0d4a | 4651 | If `overwrite-mode-binary', self-insertion replaces newlines and tabs too.\n\ |
1ab256cb RM |
4652 | Automatically becomes buffer-local when set in any fashion."); |
4653 | ||
54939090 RS |
4654 | #if 0 /* The doc string is too long for some compilers, |
4655 | but make-docfile can find it in this comment. */ | |
1ab256cb | 4656 | DEFVAR_PER_BUFFER ("buffer-display-table", ¤t_buffer->display_table, |
5d305367 | 4657 | Qnil, |
1ab256cb RM |
4658 | "Display table that controls display of the contents of current buffer.\n\ |
4659 | Automatically becomes buffer-local when set in any fashion.\n\ | |
6fdc249f EN |
4660 | The display table is a char-table created with `make-display-table'.\n\ |
4661 | The ordinary char-table elements control how to display each possible text\n\ | |
4662 | character. Each value should be a vector of characters or nil;\n\ | |
1ab256cb | 4663 | nil means display the character in the default fashion.\n\ |
6fdc249f EN |
4664 | There are six extra slots to control the display of\n\ |
4665 | the end of a truncated screen line (extra-slot 0, a single character);\n\ | |
4666 | the end of a continued line (extra-slot 1, a single character);\n\ | |
6158b3b0 | 4667 | the escape character used to display character codes in octal\n\ |
6fdc249f EN |
4668 | (extra-slot 2, a single character);\n\ |
4669 | the character used as an arrow for control characters (extra-slot 3,\n\ | |
6158b3b0 | 4670 | a single character);\n\ |
6fdc249f | 4671 | the decoration indicating the presence of invisible lines (extra-slot 4,\n\ |
a45e35e1 JB |
4672 | a vector of characters);\n\ |
4673 | the character used to draw the border between side-by-side windows\n\ | |
6fdc249f EN |
4674 | (extra-slot 5, a single character).\n\ |
4675 | See also the functions `display-table-slot' and `set-display-table-slot'.\n\ | |
1ab256cb RM |
4676 | If this variable is nil, the value of `standard-display-table' is used.\n\ |
4677 | Each window can have its own, overriding display table."); | |
54939090 RS |
4678 | #endif |
4679 | DEFVAR_PER_BUFFER ("buffer-display-table", ¤t_buffer->display_table, | |
de15914a | 4680 | Qnil, 0); |
1ab256cb | 4681 | |
0552666b GM |
4682 | DEFVAR_PER_BUFFER ("left-margin-width", ¤t_buffer->left_margin_width, |
4683 | Qnil, | |
4684 | "*Width of left marginal area for display of a buffer.\n\ | |
4685 | Automatically becomes buffer-local when set in any fashion.\n\ | |
4686 | A value of nil means no marginal area."); | |
4687 | ||
4688 | DEFVAR_PER_BUFFER ("right-margin-width", ¤t_buffer->right_margin_width, | |
4689 | Qnil, | |
4690 | "*Width of right marginal area for display of a buffer.\n\ | |
4691 | Automatically becomes buffer-local when set in any fashion.\n\ | |
4692 | A value of nil means no marginal area."); | |
4693 | ||
4694 | DEFVAR_PER_BUFFER ("indicate-empty-lines", | |
4695 | ¤t_buffer->indicate_empty_lines, Qnil, | |
9d1ee976 GM |
4696 | "*Visually indicate empty lines after the buffer end.\n\ |
4697 | If non-nil, a bitmap is displayed in the left fringe of a window on\n\ | |
4698 | window-systems.\n\ | |
0552666b GM |
4699 | Automatically becomes buffer-local when set in any fashion.\n"); |
4700 | ||
4701 | DEFVAR_PER_BUFFER ("scroll-up-aggressively", | |
4702 | ¤t_buffer->scroll_up_aggressively, Qnil, | |
4703 | "*If a number, scroll display up aggressively.\n\ | |
4704 | If scrolling a window because point is above the window start, choose\n\ | |
4705 | a new window start so that point ends up that fraction of the window's\n\ | |
4706 | height from the bottom of the window.\n\ | |
4707 | Automatically becomes buffer-local when set in any fashion."); | |
4708 | ||
4709 | DEFVAR_PER_BUFFER ("scroll-down-aggressively", | |
4710 | ¤t_buffer->scroll_down_aggressively, Qnil, | |
4711 | "*If a number, scroll display down aggressively.\n\ | |
4712 | If scrolling a window because point is below the window end, choose\n\ | |
4713 | a new window start so that point ends up that fraction of the window's\n\ | |
4714 | height from the top of the window.\n\ | |
4715 | Automatically becomes buffer-local when set in any fashion."); | |
4716 | ||
1ab256cb RM |
4717 | /*DEFVAR_LISP ("debug-check-symbol", &Vcheck_symbol, |
4718 | "Don't ask."); | |
4719 | */ | |
1ab256cb | 4720 | |
5f079267 RS |
4721 | DEFVAR_LISP ("before-change-functions", &Vbefore_change_functions, |
4722 | "List of functions to call before each text change.\n\ | |
4723 | Two arguments are passed to each function: the positions of\n\ | |
4724 | the beginning and end of the range of old text to be changed.\n\ | |
4725 | \(For an insertion, the beginning and end are at the same place.)\n\ | |
4726 | No information is given about the length of the text after the change.\n\ | |
5f079267 RS |
4727 | \n\ |
4728 | Buffer changes made while executing the `before-change-functions'\n\ | |
b86344d0 RS |
4729 | don't call any before-change or after-change functions.\n\ |
4730 | That's because these variables are temporarily set to nil.\n\ | |
4731 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
4732 | these variables. See the Emacs Lisp manual for a way of\n\ | |
9ebc22d4 RS |
4733 | accomplishing an equivalent result by using other variables.\n\ |
4734 | \n\ | |
4735 | If an unhandled error happens in running these functions,\n\ | |
4736 | the variable's value remains nil. That prevents the error\n\ | |
4737 | from happening repeatedly and making Emacs nonfunctional."); | |
5f079267 RS |
4738 | Vbefore_change_functions = Qnil; |
4739 | ||
4740 | DEFVAR_LISP ("after-change-functions", &Vafter_change_functions, | |
4741 | "List of function to call after each text change.\n\ | |
4742 | Three arguments are passed to each function: the positions of\n\ | |
4743 | the beginning and end of the range of changed text,\n\ | |
839dd834 | 4744 | and the length in bytes of the pre-change text replaced by that range.\n\ |
5f079267 | 4745 | \(For an insertion, the pre-change length is zero;\n\ |
839dd834 | 4746 | for a deletion, that length is the number of bytes deleted,\n\ |
5f079267 RS |
4747 | and the post-change beginning and end are at the same place.)\n\ |
4748 | \n\ | |
4749 | Buffer changes made while executing the `after-change-functions'\n\ | |
b86344d0 RS |
4750 | don't call any before-change or after-change functions.\n\ |
4751 | That's because these variables are temporarily set to nil.\n\ | |
4752 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
4753 | these variables. See the Emacs Lisp manual for a way of\n\ | |
9ebc22d4 RS |
4754 | accomplishing an equivalent result by using other variables.\n\ |
4755 | \n\ | |
4756 | If an unhandled error happens in running these functions,\n\ | |
4757 | the variable's value remains nil. That prevents the error\n\ | |
4758 | from happening repeatedly and making Emacs nonfunctional."); | |
5f079267 RS |
4759 | Vafter_change_functions = Qnil; |
4760 | ||
dbc4e1c1 JB |
4761 | DEFVAR_LISP ("first-change-hook", &Vfirst_change_hook, |
4762 | "A list of functions to call before changing a buffer which is unmodified.\n\ | |
4763 | The functions are run using the `run-hooks' function."); | |
4764 | Vfirst_change_hook = Qnil; | |
1ab256cb | 4765 | |
54939090 RS |
4766 | #if 0 /* The doc string is too long for some compilers, |
4767 | but make-docfile can find it in this comment. */ | |
3f5fcd47 | 4768 | DEFVAR_PER_BUFFER ("buffer-undo-list", ¤t_buffer->undo_list, Qnil, |
1ab256cb | 4769 | "List of undo entries in current buffer.\n\ |
3fd364db | 4770 | This variable is always local in all buffers.\n\ |
1ab256cb RM |
4771 | Recent changes come first; older changes follow newer.\n\ |
4772 | \n\ | |
630f4018 KH |
4773 | An entry (BEG . END) represents an insertion which begins at\n\ |
4774 | position BEG and ends at position END.\n\ | |
1ab256cb RM |
4775 | \n\ |
4776 | An entry (TEXT . POSITION) represents the deletion of the string TEXT\n\ | |
4777 | from (abs POSITION). If POSITION is positive, point was at the front\n\ | |
4778 | of the text being deleted; if negative, point was at the end.\n\ | |
4779 | \n\ | |
6c0df54a RS |
4780 | An entry (t HIGH . LOW) indicates that the buffer previously had\n\ |
4781 | \"unmodified\" status. HIGH and LOW are the high and low 16-bit portions\n\ | |
4782 | of the visited file's modification time, as of that time. If the\n\ | |
4783 | modification time of the most recent save is different, this entry is\n\ | |
1ab256cb RM |
4784 | obsolete.\n\ |
4785 | \n\ | |
6c0df54a RS |
4786 | An entry (nil PROPERTY VALUE BEG . END) indicates that a text property\n\ |
4787 | was modified between BEG and END. PROPERTY is the property name,\n\ | |
4788 | and VALUE is the old value.\n\ | |
483c1fd3 | 4789 | \n\ |
da1c183c RS |
4790 | An entry (MARKER . DISTANCE) indicates that the marker MARKER\n\ |
4791 | was adjusted in position by the offset DISTANCE (an integer).\n\ | |
4792 | \n\ | |
bec44fd6 JB |
4793 | An entry of the form POSITION indicates that point was at the buffer\n\ |
4794 | location given by the integer. Undoing an entry of this form places\n\ | |
4795 | point at POSITION.\n\ | |
4796 | \n\ | |
1ab256cb RM |
4797 | nil marks undo boundaries. The undo command treats the changes\n\ |
4798 | between two undo boundaries as a single step to be undone.\n\ | |
4799 | \n\ | |
bec44fd6 | 4800 | If the value of the variable is t, undo information is not recorded."); |
54939090 RS |
4801 | #endif |
4802 | DEFVAR_PER_BUFFER ("buffer-undo-list", ¤t_buffer->undo_list, Qnil, | |
de15914a | 4803 | 0); |
1ab256cb | 4804 | |
c48f61ef RS |
4805 | DEFVAR_PER_BUFFER ("mark-active", ¤t_buffer->mark_active, Qnil, |
4806 | "Non-nil means the mark and region are currently active in this buffer.\n\ | |
4807 | Automatically local in all buffers."); | |
4808 | ||
28e969dd | 4809 | DEFVAR_PER_BUFFER ("cache-long-line-scans", ¤t_buffer->cache_long_line_scans, Qnil, |
f0c5b712 JB |
4810 | "Non-nil means that Emacs should use caches to handle long lines more quickly.\n\ |
4811 | This variable is buffer-local, in all buffers.\n\ | |
28e969dd | 4812 | \n\ |
f0c5b712 JB |
4813 | Normally, the line-motion functions work by scanning the buffer for\n\ |
4814 | newlines. Columnar operations (like move-to-column and\n\ | |
4815 | compute-motion) also work by scanning the buffer, summing character\n\ | |
4816 | widths as they go. This works well for ordinary text, but if the\n\ | |
28e969dd | 4817 | buffer's lines are very long (say, more than 500 characters), these\n\ |
f0c5b712 JB |
4818 | motion functions will take longer to execute. Emacs may also take\n\ |
4819 | longer to update the display.\n\ | |
28e969dd | 4820 | \n\ |
f0c5b712 JB |
4821 | If cache-long-line-scans is non-nil, these motion functions cache the\n\ |
4822 | results of their scans, and consult the cache to avoid rescanning\n\ | |
4823 | regions of the buffer until the text is modified. The caches are most\n\ | |
4824 | beneficial when they prevent the most searching---that is, when the\n\ | |
4825 | buffer contains long lines and large regions of characters with the\n\ | |
4826 | same, fixed screen width.\n\ | |
28e969dd | 4827 | \n\ |
f0c5b712 JB |
4828 | When cache-long-line-scans is non-nil, processing short lines will\n\ |
4829 | become slightly slower (because of the overhead of consulting the\n\ | |
4830 | cache), and the caches will use memory roughly proportional to the\n\ | |
4831 | number of newlines and characters whose screen width varies.\n\ | |
4832 | \n\ | |
4833 | The caches require no explicit maintenance; their accuracy is\n\ | |
4834 | maintained internally by the Emacs primitives. Enabling or disabling\n\ | |
4835 | the cache should not affect the behavior of any of the motion\n\ | |
4836 | functions; it should only affect their performance."); | |
28e969dd | 4837 | |
943e065b | 4838 | DEFVAR_PER_BUFFER ("point-before-scroll", ¤t_buffer->point_before_scroll, Qnil, |
3fd364db RS |
4839 | "Value of point before the last series of scroll operations, or nil.\n\ |
4840 | This variable is always local in all buffers."); | |
943e065b | 4841 | |
be9aafdd BG |
4842 | DEFVAR_PER_BUFFER ("buffer-file-format", ¤t_buffer->file_format, Qnil, |
4843 | "List of formats to use when saving this buffer.\n\ | |
3fd364db | 4844 | This variable is always local in all buffers.\n\ |
be9aafdd BG |
4845 | Formats are defined by `format-alist'. This variable is\n\ |
4846 | set when a file is visited. Automatically local in all buffers."); | |
4847 | ||
3cb719bd RS |
4848 | DEFVAR_PER_BUFFER ("buffer-invisibility-spec", |
4849 | ¤t_buffer->invisibility_spec, Qnil, | |
4850 | "Invisibility spec of this buffer.\n\ | |
3fd364db | 4851 | This variable is always local in all buffers.\n\ |
3cb719bd RS |
4852 | The default is t, which means that text is invisible\n\ |
4853 | if it has a non-nil `invisible' property.\n\ | |
4854 | If the value is a list, a text character is invisible if its `invisible'\n\ | |
4855 | property is an element in that list.\n\ | |
554216ad KH |
4856 | If an element is a cons cell of the form (PROP . ELLIPSIS),\n\ |
4857 | then characters with property value PROP are invisible,\n\ | |
3cb719bd RS |
4858 | and they have an ellipsis as well if ELLIPSIS is non-nil."); |
4859 | ||
7962a441 RS |
4860 | DEFVAR_PER_BUFFER ("buffer-display-count", |
4861 | ¤t_buffer->display_count, Qnil, | |
3fd364db RS |
4862 | "A number incremented each time this buffer is displayed in a window.\n\ |
4863 | This variable is always local in all buffers.\n\ | |
4864 | The function `set-window-buffer increments it."); | |
4865 | ||
4866 | DEFVAR_PER_BUFFER ("buffer-display-time", | |
4867 | ¤t_buffer->display_time, Qnil, | |
4868 | "Time stamp updated each time this buffer is displayed in a window.\n\ | |
4869 | This variable is always local in all buffers.\n\ | |
4870 | The function `set-window-buffer' updates this variable\n\ | |
4871 | to the value obtained by calling `current-time'.\n\ | |
4872 | If the buffer has never been shown in a window, the value is nil."); | |
7962a441 | 4873 | |
c48f61ef | 4874 | DEFVAR_LISP ("transient-mark-mode", &Vtransient_mark_mode, |
319c537c RS |
4875 | "*Non-nil means deactivate the mark when the buffer contents change.\n\ |
4876 | Non-nil also enables highlighting of the region whenever the mark is active.\n\ | |
4877 | The variable `highlight-nonselected-windows' controls whether to highlight\n\ | |
4878 | all windows or just the selected window."); | |
c48f61ef RS |
4879 | Vtransient_mark_mode = Qnil; |
4880 | ||
0a4469c9 | 4881 | DEFVAR_LISP ("inhibit-read-only", &Vinhibit_read_only, |
a96b68f1 RS |
4882 | "*Non-nil means disregard read-only status of buffers or characters.\n\ |
4883 | If the value is t, disregard `buffer-read-only' and all `read-only'\n\ | |
4884 | text properties. If the value is a list, disregard `buffer-read-only'\n\ | |
4885 | and disregard a `read-only' text property if the property value\n\ | |
4886 | is a member of the list."); | |
4887 | Vinhibit_read_only = Qnil; | |
4888 | ||
bb2ec976 GM |
4889 | DEFVAR_PER_BUFFER ("cursor-type", ¤t_buffer->cursor_type, Qnil, |
4890 | "Cursor to use in window displaying this buffer.\n\ | |
4891 | Values are interpreted as follows:\n\ | |
4892 | \n\ | |
4893 | t use the cursor specified for the frame\n\ | |
4894 | nil don't display a cursor\n\ | |
4895 | `bar' display a bar cursor with default width\n\ | |
4896 | (bar . WIDTH) display a bar cursor with width WIDTH\n\ | |
4897 | others display a box cursor."); | |
4898 | ||
a3bbced0 GM |
4899 | DEFVAR_PER_BUFFER ("line-spacing", |
4900 | ¤t_buffer->extra_line_spacing, Qnil, | |
4901 | "Additional space to put between lines when displaying a buffer.\n\ | |
4902 | The space is measured in pixels, and put below lines on window systems."); | |
4903 | ||
dcdffbf6 RS |
4904 | DEFVAR_LISP ("kill-buffer-query-functions", &Vkill_buffer_query_functions, |
4905 | "List of functions called with no args to query before killing a buffer."); | |
4906 | Vkill_buffer_query_functions = Qnil; | |
4907 | ||
0dc88e60 | 4908 | defsubr (&Sbuffer_live_p); |
1ab256cb RM |
4909 | defsubr (&Sbuffer_list); |
4910 | defsubr (&Sget_buffer); | |
4911 | defsubr (&Sget_file_buffer); | |
4912 | defsubr (&Sget_buffer_create); | |
336cd056 | 4913 | defsubr (&Smake_indirect_buffer); |
01050cb5 | 4914 | defsubr (&Sgenerate_new_buffer_name); |
1ab256cb RM |
4915 | defsubr (&Sbuffer_name); |
4916 | /*defsubr (&Sbuffer_number);*/ | |
4917 | defsubr (&Sbuffer_file_name); | |
336cd056 | 4918 | defsubr (&Sbuffer_base_buffer); |
1ab256cb RM |
4919 | defsubr (&Sbuffer_local_variables); |
4920 | defsubr (&Sbuffer_modified_p); | |
4921 | defsubr (&Sset_buffer_modified_p); | |
4922 | defsubr (&Sbuffer_modified_tick); | |
4923 | defsubr (&Srename_buffer); | |
4924 | defsubr (&Sother_buffer); | |
4925 | defsubr (&Sbuffer_disable_undo); | |
4926 | defsubr (&Sbuffer_enable_undo); | |
4927 | defsubr (&Skill_buffer); | |
a9ee7a59 | 4928 | defsubr (&Sset_buffer_major_mode); |
1ab256cb RM |
4929 | defsubr (&Sswitch_to_buffer); |
4930 | defsubr (&Spop_to_buffer); | |
4931 | defsubr (&Scurrent_buffer); | |
4932 | defsubr (&Sset_buffer); | |
4933 | defsubr (&Sbarf_if_buffer_read_only); | |
4934 | defsubr (&Sbury_buffer); | |
3ac81adb RS |
4935 | defsubr (&Serase_buffer); |
4936 | defsubr (&Sset_buffer_multibyte); | |
1ab256cb | 4937 | defsubr (&Skill_all_local_variables); |
2eec3b4e | 4938 | |
52f8ec73 | 4939 | defsubr (&Soverlayp); |
2eec3b4e RS |
4940 | defsubr (&Smake_overlay); |
4941 | defsubr (&Sdelete_overlay); | |
4942 | defsubr (&Smove_overlay); | |
8ebafa8d JB |
4943 | defsubr (&Soverlay_start); |
4944 | defsubr (&Soverlay_end); | |
4945 | defsubr (&Soverlay_buffer); | |
4946 | defsubr (&Soverlay_properties); | |
2eec3b4e | 4947 | defsubr (&Soverlays_at); |
74514898 | 4948 | defsubr (&Soverlays_in); |
2eec3b4e | 4949 | defsubr (&Snext_overlay_change); |
239c932b | 4950 | defsubr (&Sprevious_overlay_change); |
2eec3b4e RS |
4951 | defsubr (&Soverlay_recenter); |
4952 | defsubr (&Soverlay_lists); | |
4953 | defsubr (&Soverlay_get); | |
4954 | defsubr (&Soverlay_put); | |
a8c21b48 | 4955 | defsubr (&Srestore_buffer_modified_p); |
1ab256cb RM |
4956 | } |
4957 | ||
dfcf069d | 4958 | void |
1ab256cb RM |
4959 | keys_of_buffer () |
4960 | { | |
4961 | initial_define_key (control_x_map, 'b', "switch-to-buffer"); | |
4962 | initial_define_key (control_x_map, 'k', "kill-buffer"); | |
4158c17d RM |
4963 | |
4964 | /* This must not be in syms_of_buffer, because Qdisabled is not | |
4965 | initialized when that function gets called. */ | |
4966 | Fput (intern ("erase-buffer"), Qdisabled, Qt); | |
1ab256cb | 4967 | } |