Commit | Line | Data |
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1ab256cb | 1 | /* Buffer manipulation primitives for GNU Emacs. |
3cb719bd | 2 | Copyright (C) 1985, 1986, 1987, 1988, 1989, 1993, 1994, 1995 |
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 | |
19 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
20 | ||
21 | ||
2381d133 JB |
22 | #include <sys/types.h> |
23 | #include <sys/stat.h> | |
1ab256cb RM |
24 | #include <sys/param.h> |
25 | ||
26 | #ifndef MAXPATHLEN | |
27 | /* in 4.1, param.h fails to define this. */ | |
28 | #define MAXPATHLEN 1024 | |
29 | #endif /* not MAXPATHLEN */ | |
30 | ||
18160b98 | 31 | #include <config.h> |
1ab256cb | 32 | #include "lisp.h" |
21cf4cf8 | 33 | #include "intervals.h" |
1ab256cb RM |
34 | #include "window.h" |
35 | #include "commands.h" | |
36 | #include "buffer.h" | |
28e969dd | 37 | #include "region-cache.h" |
1ab256cb | 38 | #include "indent.h" |
d014bf88 | 39 | #include "blockinput.h" |
1ab256cb RM |
40 | |
41 | struct buffer *current_buffer; /* the current buffer */ | |
42 | ||
43 | /* First buffer in chain of all buffers (in reverse order of creation). | |
44 | Threaded through ->next. */ | |
45 | ||
46 | struct buffer *all_buffers; | |
47 | ||
48 | /* This structure holds the default values of the buffer-local variables | |
49 | defined with DEFVAR_PER_BUFFER, that have special slots in each buffer. | |
50 | The default value occupies the same slot in this structure | |
51 | as an individual buffer's value occupies in that buffer. | |
52 | Setting the default value also goes through the alist of buffers | |
53 | and stores into each buffer that does not say it has a local value. */ | |
54 | ||
55 | struct buffer buffer_defaults; | |
56 | ||
57 | /* A Lisp_Object pointer to the above, used for staticpro */ | |
58 | ||
59 | static Lisp_Object Vbuffer_defaults; | |
60 | ||
61 | /* This structure marks which slots in a buffer have corresponding | |
62 | default values in buffer_defaults. | |
63 | Each such slot has a nonzero value in this structure. | |
64 | The value has only one nonzero bit. | |
65 | ||
66 | When a buffer has its own local value for a slot, | |
67 | the bit for that slot (found in the same slot in this structure) | |
68 | is turned on in the buffer's local_var_flags slot. | |
69 | ||
70 | If a slot in this structure is -1, then even though there may | |
71 | be a DEFVAR_PER_BUFFER for the slot, there is no default value for it; | |
72 | and the corresponding slot in buffer_defaults is not used. | |
73 | ||
74 | If a slot is -2, then there is no DEFVAR_PER_BUFFER for it, | |
75 | but there is a default value which is copied into each buffer. | |
76 | ||
77 | If a slot in this structure is negative, then even though there may | |
78 | be a DEFVAR_PER_BUFFER for the slot, there is no default value for it; | |
79 | and the corresponding slot in buffer_defaults is not used. | |
80 | ||
81 | If a slot in this structure corresponding to a DEFVAR_PER_BUFFER is | |
82 | zero, that is a bug */ | |
83 | ||
84 | struct buffer buffer_local_flags; | |
85 | ||
86 | /* This structure holds the names of symbols whose values may be | |
87 | buffer-local. It is indexed and accessed in the same way as the above. */ | |
88 | ||
89 | struct buffer buffer_local_symbols; | |
90 | /* A Lisp_Object pointer to the above, used for staticpro */ | |
91 | static Lisp_Object Vbuffer_local_symbols; | |
92 | ||
0fa3ba92 JB |
93 | /* This structure holds the required types for the values in the |
94 | buffer-local slots. If a slot contains Qnil, then the | |
95 | corresponding buffer slot may contain a value of any type. If a | |
96 | slot contains an integer, then prospective values' tags must be | |
97 | equal to that integer. When a tag does not match, the function | |
98 | buffer_slot_type_mismatch will signal an error. */ | |
99 | struct buffer buffer_local_types; | |
100 | ||
1ab256cb | 101 | Lisp_Object Fset_buffer (); |
01050cb5 | 102 | void set_buffer_internal (); |
c7aa5005 | 103 | void set_buffer_internal_1 (); |
173f2a64 | 104 | static void call_overlay_mod_hooks (); |
2f3f993b | 105 | static void swap_out_buffer_local_variables (); |
1ab256cb RM |
106 | |
107 | /* Alist of all buffer names vs the buffers. */ | |
108 | /* This used to be a variable, but is no longer, | |
109 | to prevent lossage due to user rplac'ing this alist or its elements. */ | |
110 | Lisp_Object Vbuffer_alist; | |
111 | ||
112 | /* Functions to call before and after each text change. */ | |
113 | Lisp_Object Vbefore_change_function; | |
114 | Lisp_Object Vafter_change_function; | |
5f079267 RS |
115 | Lisp_Object Vbefore_change_functions; |
116 | Lisp_Object Vafter_change_functions; | |
1ab256cb | 117 | |
c48f61ef RS |
118 | Lisp_Object Vtransient_mark_mode; |
119 | ||
a96b68f1 RS |
120 | /* t means ignore all read-only text properties. |
121 | A list means ignore such a property if its value is a member of the list. | |
122 | Any non-nil value means ignore buffer-read-only. */ | |
123 | Lisp_Object Vinhibit_read_only; | |
124 | ||
dcdffbf6 RS |
125 | /* List of functions to call that can query about killing a buffer. |
126 | If any of these functions returns nil, we don't kill it. */ | |
127 | Lisp_Object Vkill_buffer_query_functions; | |
128 | ||
dbc4e1c1 JB |
129 | /* List of functions to call before changing an unmodified buffer. */ |
130 | Lisp_Object Vfirst_change_hook; | |
131 | Lisp_Object Qfirst_change_hook; | |
1ab256cb RM |
132 | |
133 | Lisp_Object Qfundamental_mode, Qmode_class, Qpermanent_local; | |
134 | ||
135 | Lisp_Object Qprotected_field; | |
136 | ||
137 | Lisp_Object QSFundamental; /* A string "Fundamental" */ | |
138 | ||
139 | Lisp_Object Qkill_buffer_hook; | |
140 | ||
5fe0b67e RS |
141 | Lisp_Object Qget_file_buffer; |
142 | ||
52f8ec73 JB |
143 | Lisp_Object Qoverlayp; |
144 | ||
bbbe9545 | 145 | Lisp_Object Qpriority, Qwindow, Qevaporate, Qbefore_string, Qafter_string; |
5985d248 | 146 | |
294d215f RS |
147 | Lisp_Object Qmodification_hooks; |
148 | Lisp_Object Qinsert_in_front_hooks; | |
149 | Lisp_Object Qinsert_behind_hooks; | |
150 | ||
1ab256cb RM |
151 | /* For debugging; temporary. See set_buffer_internal. */ |
152 | /* Lisp_Object Qlisp_mode, Vcheck_symbol; */ | |
153 | ||
154 | nsberror (spec) | |
155 | Lisp_Object spec; | |
156 | { | |
a7a60ce9 | 157 | if (STRINGP (spec)) |
1ab256cb RM |
158 | error ("No buffer named %s", XSTRING (spec)->data); |
159 | error ("Invalid buffer argument"); | |
160 | } | |
161 | \f | |
162 | DEFUN ("buffer-list", Fbuffer_list, Sbuffer_list, 0, 0, 0, | |
163 | "Return a list of all existing live buffers.") | |
164 | () | |
165 | { | |
166 | return Fmapcar (Qcdr, Vbuffer_alist); | |
167 | } | |
168 | ||
04ae1b48 RS |
169 | /* Like Fassoc, but use Fstring_equal to compare |
170 | (which ignores text properties), | |
171 | and don't ever QUIT. */ | |
172 | ||
173 | static Lisp_Object | |
174 | assoc_ignore_text_properties (key, list) | |
175 | register Lisp_Object key; | |
176 | Lisp_Object list; | |
177 | { | |
178 | register Lisp_Object tail; | |
179 | for (tail = list; !NILP (tail); tail = Fcdr (tail)) | |
180 | { | |
181 | register Lisp_Object elt, tem; | |
182 | elt = Fcar (tail); | |
183 | tem = Fstring_equal (Fcar (elt), key); | |
184 | if (!NILP (tem)) | |
185 | return elt; | |
186 | } | |
187 | return Qnil; | |
188 | } | |
189 | ||
1ab256cb RM |
190 | DEFUN ("get-buffer", Fget_buffer, Sget_buffer, 1, 1, 0, |
191 | "Return the buffer named NAME (a string).\n\ | |
192 | If there is no live buffer named NAME, return nil.\n\ | |
193 | NAME may also be a buffer; if so, the value is that buffer.") | |
194 | (name) | |
195 | register Lisp_Object name; | |
196 | { | |
a7a60ce9 | 197 | if (BUFFERP (name)) |
1ab256cb RM |
198 | return name; |
199 | CHECK_STRING (name, 0); | |
200 | ||
04ae1b48 | 201 | return Fcdr (assoc_ignore_text_properties (name, Vbuffer_alist)); |
1ab256cb RM |
202 | } |
203 | ||
204 | DEFUN ("get-file-buffer", Fget_file_buffer, Sget_file_buffer, 1, 1, 0, | |
205 | "Return the buffer visiting file FILENAME (a string).\n\ | |
92194d02 | 206 | The buffer's `buffer-file-name' must match exactly the expansion of FILENAME.\n\ |
11da5363 RS |
207 | If there is no such live buffer, return nil.\n\ |
208 | See also `find-buffer-visiting'.") | |
1ab256cb RM |
209 | (filename) |
210 | register Lisp_Object filename; | |
211 | { | |
212 | register Lisp_Object tail, buf, tem; | |
5fe0b67e RS |
213 | Lisp_Object handler; |
214 | ||
1ab256cb RM |
215 | CHECK_STRING (filename, 0); |
216 | filename = Fexpand_file_name (filename, Qnil); | |
217 | ||
5fe0b67e RS |
218 | /* If the file name has special constructs in it, |
219 | call the corresponding file handler. */ | |
a617e913 | 220 | handler = Ffind_file_name_handler (filename, Qget_file_buffer); |
5fe0b67e RS |
221 | if (!NILP (handler)) |
222 | return call2 (handler, Qget_file_buffer, filename); | |
223 | ||
1ab256cb RM |
224 | for (tail = Vbuffer_alist; CONSP (tail); tail = XCONS (tail)->cdr) |
225 | { | |
226 | buf = Fcdr (XCONS (tail)->car); | |
a7a60ce9 KH |
227 | if (!BUFFERP (buf)) continue; |
228 | if (!STRINGP (XBUFFER (buf)->filename)) continue; | |
1ab256cb | 229 | tem = Fstring_equal (XBUFFER (buf)->filename, filename); |
265a9e55 | 230 | if (!NILP (tem)) |
1ab256cb RM |
231 | return buf; |
232 | } | |
233 | return Qnil; | |
234 | } | |
235 | ||
236 | /* Incremented for each buffer created, to assign the buffer number. */ | |
237 | int buffer_count; | |
238 | ||
239 | DEFUN ("get-buffer-create", Fget_buffer_create, Sget_buffer_create, 1, 1, 0, | |
240 | "Return the buffer named NAME, or create such a buffer and return it.\n\ | |
241 | A new buffer is created if there is no live buffer named NAME.\n\ | |
b44895bc | 242 | If NAME starts with a space, the new buffer does not keep undo information.\n\ |
1ab256cb RM |
243 | If NAME is a buffer instead of a string, then it is the value returned.\n\ |
244 | The value is never nil.") | |
245 | (name) | |
246 | register Lisp_Object name; | |
247 | { | |
a9ee7a59 | 248 | register Lisp_Object buf; |
1ab256cb RM |
249 | register struct buffer *b; |
250 | ||
251 | buf = Fget_buffer (name); | |
265a9e55 | 252 | if (!NILP (buf)) |
1ab256cb RM |
253 | return buf; |
254 | ||
31cd83e9 KH |
255 | if (XSTRING (name)->size == 0) |
256 | error ("Empty string for buffer name is not allowed"); | |
257 | ||
9ac0d9e0 | 258 | b = (struct buffer *) xmalloc (sizeof (struct buffer)); |
1ab256cb | 259 | |
336cd056 RS |
260 | b->size = sizeof (struct buffer) / sizeof (EMACS_INT); |
261 | ||
262 | /* An ordinary buffer uses its own struct buffer_text. */ | |
263 | b->text = &b->own_text; | |
264 | b->base_buffer = 0; | |
265 | ||
1ab256cb | 266 | BUF_GAP_SIZE (b) = 20; |
9ac0d9e0 | 267 | BLOCK_INPUT; |
1ab256cb | 268 | BUFFER_ALLOC (BUF_BEG_ADDR (b), BUF_GAP_SIZE (b)); |
9ac0d9e0 | 269 | UNBLOCK_INPUT; |
1ab256cb | 270 | if (! BUF_BEG_ADDR (b)) |
81841847 | 271 | buffer_memory_full (); |
1ab256cb RM |
272 | |
273 | BUF_PT (b) = 1; | |
274 | BUF_GPT (b) = 1; | |
275 | BUF_BEGV (b) = 1; | |
276 | BUF_ZV (b) = 1; | |
277 | BUF_Z (b) = 1; | |
278 | BUF_MODIFF (b) = 1; | |
336cd056 RS |
279 | BUF_SAVE_MODIFF (b) = 1; |
280 | BUF_INTERVALS (b) = 0; | |
1ab256cb | 281 | |
28e969dd JB |
282 | b->newline_cache = 0; |
283 | b->width_run_cache = 0; | |
284 | b->width_table = Qnil; | |
285 | ||
1ab256cb RM |
286 | /* Put this on the chain of all buffers including killed ones. */ |
287 | b->next = all_buffers; | |
288 | all_buffers = b; | |
289 | ||
336cd056 RS |
290 | /* An ordinary buffer normally doesn't need markers |
291 | to handle BEGV and ZV. */ | |
292 | b->pt_marker = Qnil; | |
293 | b->begv_marker = Qnil; | |
294 | b->zv_marker = Qnil; | |
04ae1b48 RS |
295 | |
296 | name = Fcopy_sequence (name); | |
297 | INITIALIZE_INTERVAL (XSTRING (name), NULL_INTERVAL); | |
1ab256cb | 298 | b->name = name; |
04ae1b48 | 299 | |
1ab256cb RM |
300 | if (XSTRING (name)->data[0] != ' ') |
301 | b->undo_list = Qnil; | |
302 | else | |
303 | b->undo_list = Qt; | |
304 | ||
305 | reset_buffer (b); | |
bcd40520 | 306 | reset_buffer_local_variables (b); |
1ab256cb RM |
307 | |
308 | /* Put this in the alist of all live buffers. */ | |
67180c6a | 309 | XSETBUFFER (buf, b); |
1ab256cb RM |
310 | Vbuffer_alist = nconc2 (Vbuffer_alist, Fcons (Fcons (name, buf), Qnil)); |
311 | ||
312 | b->mark = Fmake_marker (); | |
336cd056 RS |
313 | BUF_MARKERS (b) = Qnil; |
314 | b->name = name; | |
315 | return buf; | |
316 | } | |
317 | ||
318 | DEFUN ("make-indirect-buffer", | |
319 | Fmake_indirect_buffer, Smake_indirect_buffer, 2, 2, | |
193c3837 | 320 | "bMake indirect buffer (to buffer): \nBName of indirect buffer: ", |
9e552710 RS |
321 | "Create and return an indirect buffer for buffer BASE, named NAME.\n\ |
322 | BASE should be an existing buffer (or buffer name).\n\ | |
323 | NAME should be a string which is not the name of an existing buffer.") | |
324 | (base_buffer, name) | |
325 | register Lisp_Object base_buffer, name; | |
336cd056 RS |
326 | { |
327 | register Lisp_Object buf; | |
328 | register struct buffer *b; | |
329 | ||
330 | buf = Fget_buffer (name); | |
331 | if (!NILP (buf)) | |
332 | error ("Buffer name `%s' is in use", XSTRING (name)->data); | |
333 | ||
334 | base_buffer = Fget_buffer (base_buffer); | |
335 | if (NILP (base_buffer)) | |
336 | error ("No such buffer: `%s'", | |
337 | XSTRING (XBUFFER (base_buffer)->name)->data); | |
338 | ||
339 | if (XSTRING (name)->size == 0) | |
340 | error ("Empty string for buffer name is not allowed"); | |
341 | ||
342 | b = (struct buffer *) xmalloc (sizeof (struct buffer)); | |
343 | ||
344 | b->size = sizeof (struct buffer) / sizeof (EMACS_INT); | |
345 | ||
346 | if (XBUFFER (base_buffer)->base_buffer) | |
347 | b->base_buffer = XBUFFER (base_buffer)->base_buffer; | |
348 | else | |
349 | b->base_buffer = XBUFFER (base_buffer); | |
350 | ||
351 | /* Use the base buffer's text object. */ | |
352 | b->text = b->base_buffer->text; | |
353 | ||
354 | BUF_BEGV (b) = BUF_BEGV (b->base_buffer); | |
355 | BUF_ZV (b) = BUF_ZV (b->base_buffer); | |
356 | BUF_PT (b) = BUF_PT (b->base_buffer); | |
357 | ||
358 | b->newline_cache = 0; | |
359 | b->width_run_cache = 0; | |
360 | b->width_table = Qnil; | |
361 | ||
362 | /* Put this on the chain of all buffers including killed ones. */ | |
363 | b->next = all_buffers; | |
364 | all_buffers = b; | |
365 | ||
366 | name = Fcopy_sequence (name); | |
367 | INITIALIZE_INTERVAL (XSTRING (name), NULL_INTERVAL); | |
368 | b->name = name; | |
369 | ||
370 | reset_buffer (b); | |
371 | reset_buffer_local_variables (b); | |
372 | ||
373 | /* Put this in the alist of all live buffers. */ | |
374 | XSETBUFFER (buf, b); | |
375 | Vbuffer_alist = nconc2 (Vbuffer_alist, Fcons (Fcons (name, buf), Qnil)); | |
376 | ||
377 | b->mark = Fmake_marker (); | |
1ab256cb | 378 | b->name = name; |
336cd056 RS |
379 | |
380 | /* Make sure the base buffer has markers for its narrowing. */ | |
381 | if (NILP (b->base_buffer->pt_marker)) | |
382 | { | |
383 | b->base_buffer->pt_marker = Fmake_marker (); | |
384 | Fset_marker (b->base_buffer->pt_marker, | |
385 | make_number (BUF_PT (b->base_buffer)), base_buffer); | |
386 | } | |
387 | if (NILP (b->base_buffer->begv_marker)) | |
388 | { | |
389 | b->base_buffer->begv_marker = Fmake_marker (); | |
390 | Fset_marker (b->base_buffer->begv_marker, | |
391 | make_number (BUF_BEGV (b->base_buffer)), base_buffer); | |
392 | } | |
393 | if (NILP (b->base_buffer->zv_marker)) | |
394 | { | |
395 | b->base_buffer->zv_marker = Fmake_marker (); | |
396 | Fset_marker (b->base_buffer->zv_marker, | |
397 | make_number (BUF_ZV (b->base_buffer)), base_buffer); | |
398 | } | |
399 | ||
400 | /* Give the indirect buffer markers for its narrowing. */ | |
401 | b->pt_marker = Fpoint_marker (); | |
402 | b->begv_marker = Fpoint_min_marker (); | |
403 | b->zv_marker = Fpoint_max_marker (); | |
404 | ||
a9ee7a59 | 405 | return buf; |
1ab256cb RM |
406 | } |
407 | ||
bcd40520 RS |
408 | /* Reinitialize everything about a buffer except its name and contents |
409 | and local variables. */ | |
1ab256cb RM |
410 | |
411 | void | |
412 | reset_buffer (b) | |
413 | register struct buffer *b; | |
414 | { | |
415 | b->filename = Qnil; | |
f6ed2e84 | 416 | b->file_truename = Qnil; |
1ab256cb RM |
417 | b->directory = (current_buffer) ? current_buffer->directory : Qnil; |
418 | b->modtime = 0; | |
8d7a4592 | 419 | XSETFASTINT (b->save_length, 0); |
1ab256cb RM |
420 | b->last_window_start = 1; |
421 | b->backed_up = Qnil; | |
422 | b->auto_save_modified = 0; | |
84f6bcba | 423 | b->auto_save_failure_time = -1; |
1ab256cb RM |
424 | b->auto_save_file_name = Qnil; |
425 | b->read_only = Qnil; | |
2eec3b4e RS |
426 | b->overlays_before = Qnil; |
427 | b->overlays_after = Qnil; | |
8d7a4592 | 428 | XSETFASTINT (b->overlay_center, 1); |
dfda7a7f | 429 | b->mark_active = Qnil; |
943e065b | 430 | b->point_before_scroll = Qnil; |
be9aafdd | 431 | b->file_format = Qnil; |
1ab256cb RM |
432 | } |
433 | ||
bcd40520 RS |
434 | /* Reset buffer B's local variables info. |
435 | Don't use this on a buffer that has already been in use; | |
436 | it does not treat permanent locals consistently. | |
437 | Instead, use Fkill_all_local_variables. */ | |
438 | ||
c48f61ef | 439 | reset_buffer_local_variables (b) |
1ab256cb RM |
440 | register struct buffer *b; |
441 | { | |
442 | register int offset; | |
443 | ||
444 | /* Reset the major mode to Fundamental, together with all the | |
445 | things that depend on the major mode. | |
446 | default-major-mode is handled at a higher level. | |
447 | We ignore it here. */ | |
448 | b->major_mode = Qfundamental_mode; | |
449 | b->keymap = Qnil; | |
450 | b->abbrev_table = Vfundamental_mode_abbrev_table; | |
451 | b->mode_name = QSFundamental; | |
452 | b->minor_modes = Qnil; | |
453 | b->downcase_table = Vascii_downcase_table; | |
454 | b->upcase_table = Vascii_upcase_table; | |
e9edf33c RS |
455 | b->case_canon_table = Vascii_canon_table; |
456 | b->case_eqv_table = Vascii_eqv_table; | |
336cd056 | 457 | b->buffer_file_type = Qnil; |
3cb719bd RS |
458 | b->invisibility_spec = Qt; |
459 | ||
1ab256cb RM |
460 | #if 0 |
461 | b->sort_table = XSTRING (Vascii_sort_table); | |
462 | b->folding_sort_table = XSTRING (Vascii_folding_sort_table); | |
463 | #endif /* 0 */ | |
464 | ||
465 | /* Reset all per-buffer variables to their defaults. */ | |
466 | b->local_var_alist = Qnil; | |
467 | b->local_var_flags = 0; | |
468 | ||
469 | /* For each slot that has a default value, | |
470 | copy that into the slot. */ | |
471 | ||
472 | for (offset = (char *)&buffer_local_flags.name - (char *)&buffer_local_flags; | |
473 | offset < sizeof (struct buffer); | |
4d2f1389 | 474 | offset += sizeof (Lisp_Object)) /* sizeof EMACS_INT == sizeof Lisp_Object */ |
aab80822 KH |
475 | { |
476 | int flag = XINT (*(Lisp_Object *)(offset + (char *)&buffer_local_flags)); | |
477 | if (flag > 0 || flag == -2) | |
478 | *(Lisp_Object *)(offset + (char *)b) = | |
479 | *(Lisp_Object *)(offset + (char *)&buffer_defaults); | |
480 | } | |
1ab256cb RM |
481 | } |
482 | ||
01050cb5 RM |
483 | /* We split this away from generate-new-buffer, because rename-buffer |
484 | and set-visited-file-name ought to be able to use this to really | |
485 | rename the buffer properly. */ | |
486 | ||
487 | DEFUN ("generate-new-buffer-name", Fgenerate_new_buffer_name, Sgenerate_new_buffer_name, | |
c273e647 | 488 | 1, 2, 0, |
01050cb5 RM |
489 | "Return a string that is the name of no existing buffer based on NAME.\n\ |
490 | If there is no live buffer named NAME, then return NAME.\n\ | |
1ab256cb | 491 | Otherwise modify name by appending `<NUMBER>', incrementing NUMBER\n\ |
c273e647 | 492 | until an unused name is found, and then return that name.\n\ |
03bdd54c | 493 | Optional second argument IGNORE specifies a name that is okay to use\n\ |
c273e647 | 494 | \(if it is in the sequence to be tried)\n\ |
e8b3a22d | 495 | even if a buffer with that name exists.") |
c273e647 RS |
496 | (name, ignore) |
497 | register Lisp_Object name, ignore; | |
1ab256cb RM |
498 | { |
499 | register Lisp_Object gentemp, tem; | |
500 | int count; | |
501 | char number[10]; | |
502 | ||
503 | CHECK_STRING (name, 0); | |
504 | ||
505 | tem = Fget_buffer (name); | |
265a9e55 | 506 | if (NILP (tem)) |
01050cb5 | 507 | return name; |
1ab256cb RM |
508 | |
509 | count = 1; | |
510 | while (1) | |
511 | { | |
512 | sprintf (number, "<%d>", ++count); | |
513 | gentemp = concat2 (name, build_string (number)); | |
638e4fc3 | 514 | tem = Fstring_equal (gentemp, ignore); |
c273e647 RS |
515 | if (!NILP (tem)) |
516 | return gentemp; | |
1ab256cb | 517 | tem = Fget_buffer (gentemp); |
265a9e55 | 518 | if (NILP (tem)) |
01050cb5 | 519 | return gentemp; |
1ab256cb RM |
520 | } |
521 | } | |
522 | ||
523 | \f | |
524 | DEFUN ("buffer-name", Fbuffer_name, Sbuffer_name, 0, 1, 0, | |
525 | "Return the name of BUFFER, as a string.\n\ | |
01050cb5 | 526 | With no argument or nil as argument, return the name of the current buffer.") |
1ab256cb RM |
527 | (buffer) |
528 | register Lisp_Object buffer; | |
529 | { | |
265a9e55 | 530 | if (NILP (buffer)) |
1ab256cb RM |
531 | return current_buffer->name; |
532 | CHECK_BUFFER (buffer, 0); | |
533 | return XBUFFER (buffer)->name; | |
534 | } | |
535 | ||
536 | DEFUN ("buffer-file-name", Fbuffer_file_name, Sbuffer_file_name, 0, 1, 0, | |
537 | "Return name of file BUFFER is visiting, or nil if none.\n\ | |
538 | No argument or nil as argument means use the current buffer.") | |
539 | (buffer) | |
540 | register Lisp_Object buffer; | |
541 | { | |
265a9e55 | 542 | if (NILP (buffer)) |
1ab256cb RM |
543 | return current_buffer->filename; |
544 | CHECK_BUFFER (buffer, 0); | |
545 | return XBUFFER (buffer)->filename; | |
546 | } | |
547 | ||
336cd056 RS |
548 | DEFUN ("buffer-base-buffer", Fbuffer_base_buffer, Sbuffer_base_buffer, |
549 | 0, 1, 0, | |
550 | "Return the base buffer of indirect buffer BUFFER.\n\ | |
551 | If BUFFER is not indirect, return nil.") | |
552 | (buffer) | |
553 | register Lisp_Object buffer; | |
554 | { | |
555 | struct buffer *base; | |
556 | Lisp_Object base_buffer; | |
557 | ||
558 | if (NILP (buffer)) | |
559 | base = current_buffer->base_buffer; | |
560 | else | |
561 | { | |
562 | CHECK_BUFFER (buffer, 0); | |
563 | base = XBUFFER (buffer)->base_buffer; | |
564 | } | |
565 | ||
566 | if (! base) | |
567 | return Qnil; | |
568 | XSETBUFFER (base_buffer, base); | |
569 | return base_buffer; | |
570 | } | |
571 | ||
1ab256cb RM |
572 | DEFUN ("buffer-local-variables", Fbuffer_local_variables, |
573 | Sbuffer_local_variables, 0, 1, 0, | |
574 | "Return an alist of variables that are buffer-local in BUFFER.\n\ | |
553defa4 RS |
575 | Most elements look like (SYMBOL . VALUE), describing one variable.\n\ |
576 | For a symbol that is locally unbound, just the symbol appears in the value.\n\ | |
1ab256cb RM |
577 | Note that storing new VALUEs in these elements doesn't change the variables.\n\ |
578 | No argument or nil as argument means use current buffer as BUFFER.") | |
579 | (buffer) | |
580 | register Lisp_Object buffer; | |
581 | { | |
582 | register struct buffer *buf; | |
553defa4 | 583 | register Lisp_Object result; |
1ab256cb | 584 | |
265a9e55 | 585 | if (NILP (buffer)) |
1ab256cb RM |
586 | buf = current_buffer; |
587 | else | |
588 | { | |
589 | CHECK_BUFFER (buffer, 0); | |
590 | buf = XBUFFER (buffer); | |
591 | } | |
592 | ||
553defa4 RS |
593 | result = Qnil; |
594 | ||
1ab256cb | 595 | { |
553defa4 RS |
596 | register Lisp_Object tail; |
597 | for (tail = buf->local_var_alist; CONSP (tail); tail = XCONS (tail)->cdr) | |
1ab256cb | 598 | { |
553defa4 RS |
599 | Lisp_Object val, elt; |
600 | ||
601 | elt = XCONS (tail)->car; | |
602 | ||
e0585c64 RS |
603 | /* Reference each variable in the alist in buf. |
604 | If inquiring about the current buffer, this gets the current values, | |
605 | so store them into the alist so the alist is up to date. | |
606 | If inquiring about some other buffer, this swaps out any values | |
607 | for that buffer, making the alist up to date automatically. */ | |
608 | val = find_symbol_value (XCONS (elt)->car); | |
609 | /* Use the current buffer value only if buf is the current buffer. */ | |
610 | if (buf != current_buffer) | |
553defa4 RS |
611 | val = XCONS (elt)->cdr; |
612 | ||
613 | /* If symbol is unbound, put just the symbol in the list. */ | |
614 | if (EQ (val, Qunbound)) | |
615 | result = Fcons (XCONS (elt)->car, result); | |
616 | /* Otherwise, put (symbol . value) in the list. */ | |
617 | else | |
618 | result = Fcons (Fcons (XCONS (elt)->car, val), result); | |
1ab256cb RM |
619 | } |
620 | } | |
621 | ||
1ab256cb RM |
622 | /* Add on all the variables stored in special slots. */ |
623 | { | |
624 | register int offset, mask; | |
625 | ||
626 | for (offset = (char *)&buffer_local_symbols.name - (char *)&buffer_local_symbols; | |
627 | offset < sizeof (struct buffer); | |
4d2f1389 | 628 | offset += (sizeof (EMACS_INT))) /* sizeof EMACS_INT == sizeof Lisp_Object */ |
1ab256cb | 629 | { |
aab80822 | 630 | mask = XINT (*(Lisp_Object *)(offset + (char *)&buffer_local_flags)); |
1ab256cb | 631 | if (mask == -1 || (buf->local_var_flags & mask)) |
aab80822 KH |
632 | if (SYMBOLP (*(Lisp_Object *)(offset |
633 | + (char *)&buffer_local_symbols))) | |
634 | result = Fcons (Fcons (*((Lisp_Object *) | |
635 | (offset + (char *)&buffer_local_symbols)), | |
553defa4 RS |
636 | *(Lisp_Object *)(offset + (char *)buf)), |
637 | result); | |
1ab256cb RM |
638 | } |
639 | } | |
553defa4 RS |
640 | |
641 | return result; | |
1ab256cb RM |
642 | } |
643 | ||
644 | \f | |
645 | DEFUN ("buffer-modified-p", Fbuffer_modified_p, Sbuffer_modified_p, | |
646 | 0, 1, 0, | |
647 | "Return t if BUFFER was modified since its file was last read or saved.\n\ | |
648 | No argument or nil as argument means use current buffer as BUFFER.") | |
649 | (buffer) | |
650 | register Lisp_Object buffer; | |
651 | { | |
652 | register struct buffer *buf; | |
265a9e55 | 653 | if (NILP (buffer)) |
1ab256cb RM |
654 | buf = current_buffer; |
655 | else | |
656 | { | |
657 | CHECK_BUFFER (buffer, 0); | |
658 | buf = XBUFFER (buffer); | |
659 | } | |
660 | ||
336cd056 | 661 | return BUF_SAVE_MODIFF (buf) < BUF_MODIFF (buf) ? Qt : Qnil; |
1ab256cb RM |
662 | } |
663 | ||
664 | DEFUN ("set-buffer-modified-p", Fset_buffer_modified_p, Sset_buffer_modified_p, | |
665 | 1, 1, 0, | |
666 | "Mark current buffer as modified or unmodified according to FLAG.\n\ | |
667 | A non-nil FLAG means mark the buffer modified.") | |
668 | (flag) | |
669 | register Lisp_Object flag; | |
670 | { | |
671 | register int already; | |
672 | register Lisp_Object fn; | |
673 | ||
674 | #ifdef CLASH_DETECTION | |
675 | /* If buffer becoming modified, lock the file. | |
676 | If buffer becoming unmodified, unlock the file. */ | |
677 | ||
60f4dd23 | 678 | fn = current_buffer->file_truename; |
265a9e55 | 679 | if (!NILP (fn)) |
1ab256cb | 680 | { |
336cd056 | 681 | already = SAVE_MODIFF < MODIFF; |
265a9e55 | 682 | if (!already && !NILP (flag)) |
1ab256cb | 683 | lock_file (fn); |
265a9e55 | 684 | else if (already && NILP (flag)) |
1ab256cb RM |
685 | unlock_file (fn); |
686 | } | |
687 | #endif /* CLASH_DETECTION */ | |
688 | ||
336cd056 | 689 | SAVE_MODIFF = NILP (flag) ? MODIFF : 0; |
1ab256cb RM |
690 | update_mode_lines++; |
691 | return flag; | |
692 | } | |
693 | ||
694 | DEFUN ("buffer-modified-tick", Fbuffer_modified_tick, Sbuffer_modified_tick, | |
695 | 0, 1, 0, | |
696 | "Return BUFFER's tick counter, incremented for each change in text.\n\ | |
697 | Each buffer has a tick counter which is incremented each time the text in\n\ | |
698 | that buffer is changed. It wraps around occasionally.\n\ | |
699 | No argument or nil as argument means use current buffer as BUFFER.") | |
700 | (buffer) | |
701 | register Lisp_Object buffer; | |
702 | { | |
703 | register struct buffer *buf; | |
265a9e55 | 704 | if (NILP (buffer)) |
1ab256cb RM |
705 | buf = current_buffer; |
706 | else | |
707 | { | |
708 | CHECK_BUFFER (buffer, 0); | |
709 | buf = XBUFFER (buffer); | |
710 | } | |
711 | ||
712 | return make_number (BUF_MODIFF (buf)); | |
713 | } | |
714 | \f | |
01050cb5 | 715 | DEFUN ("rename-buffer", Frename_buffer, Srename_buffer, 1, 2, |
4c7e5f09 | 716 | "sRename buffer (to new name): \nP", |
1ab256cb | 717 | "Change current buffer's name to NEWNAME (a string).\n\ |
3bd779aa | 718 | If second arg UNIQUE is nil or omitted, it is an error if a\n\ |
01050cb5 | 719 | buffer named NEWNAME already exists.\n\ |
3bd779aa | 720 | If UNIQUE is non-nil, come up with a new name using\n\ |
01050cb5 | 721 | `generate-new-buffer-name'.\n\ |
3bd779aa RS |
722 | Interactively, you can set UNIQUE with a prefix argument.\n\ |
723 | We return the name we actually gave the buffer.\n\ | |
1ab256cb | 724 | This does not change the name of the visited file (if any).") |
489c043a RS |
725 | (newname, unique) |
726 | register Lisp_Object newname, unique; | |
1ab256cb RM |
727 | { |
728 | register Lisp_Object tem, buf; | |
729 | ||
489c043a | 730 | CHECK_STRING (newname, 0); |
d59698c4 | 731 | |
489c043a | 732 | if (XSTRING (newname)->size == 0) |
d59698c4 RS |
733 | error ("Empty string is invalid as a buffer name"); |
734 | ||
489c043a | 735 | tem = Fget_buffer (newname); |
c059b5ea RM |
736 | /* Don't short-circuit if UNIQUE is t. That is a useful way to rename |
737 | the buffer automatically so you can create another with the original name. | |
738 | It makes UNIQUE equivalent to | |
489c043a | 739 | (rename-buffer (generate-new-buffer-name NEWNAME)). */ |
c059b5ea | 740 | if (NILP (unique) && XBUFFER (tem) == current_buffer) |
fb5eba9c | 741 | return current_buffer->name; |
265a9e55 | 742 | if (!NILP (tem)) |
01050cb5 | 743 | { |
3bd779aa | 744 | if (!NILP (unique)) |
489c043a | 745 | newname = Fgenerate_new_buffer_name (newname, current_buffer->name); |
01050cb5 | 746 | else |
489c043a | 747 | error ("Buffer name `%s' is in use", XSTRING (newname)->data); |
01050cb5 | 748 | } |
1ab256cb | 749 | |
489c043a | 750 | current_buffer->name = newname; |
76f590d7 JB |
751 | |
752 | /* Catch redisplay's attention. Unless we do this, the mode lines for | |
753 | any windows displaying current_buffer will stay unchanged. */ | |
754 | update_mode_lines++; | |
755 | ||
67180c6a | 756 | XSETBUFFER (buf, current_buffer); |
489c043a | 757 | Fsetcar (Frassq (buf, Vbuffer_alist), newname); |
cf058e49 KH |
758 | if (NILP (current_buffer->filename) |
759 | && !NILP (current_buffer->auto_save_file_name)) | |
1ab256cb | 760 | call0 (intern ("rename-auto-save-file")); |
fb5eba9c RS |
761 | /* Refetch since that last call may have done GC. */ |
762 | return current_buffer->name; | |
1ab256cb RM |
763 | } |
764 | ||
a0ebb746 | 765 | DEFUN ("other-buffer", Fother_buffer, Sother_buffer, 0, 2, 0, |
1ab256cb | 766 | "Return most recently selected buffer other than BUFFER.\n\ |
a0ebb746 JB |
767 | Buffers not visible in windows are preferred to visible buffers,\n\ |
768 | unless optional second argument VISIBLE-OK is non-nil.\n\ | |
1ab256cb RM |
769 | If no other buffer exists, the buffer `*scratch*' is returned.\n\ |
770 | If BUFFER is omitted or nil, some interesting buffer is returned.") | |
a0ebb746 JB |
771 | (buffer, visible_ok) |
772 | register Lisp_Object buffer, visible_ok; | |
1ab256cb RM |
773 | { |
774 | register Lisp_Object tail, buf, notsogood, tem; | |
775 | notsogood = Qnil; | |
776 | ||
265a9e55 | 777 | for (tail = Vbuffer_alist; !NILP (tail); tail = Fcdr (tail)) |
1ab256cb RM |
778 | { |
779 | buf = Fcdr (Fcar (tail)); | |
780 | if (EQ (buf, buffer)) | |
781 | continue; | |
782 | if (XSTRING (XBUFFER (buf)->name)->data[0] == ' ') | |
783 | continue; | |
04ae1b48 RS |
784 | #ifdef MULTI_FRAME |
785 | /* If the selected frame has a buffer_predicate, | |
786 | disregard buffers that don't fit the predicate. */ | |
787 | tem = frame_buffer_predicate (); | |
788 | if (!NILP (tem)) | |
789 | { | |
790 | tem = call1 (tem, buf); | |
791 | if (NILP (tem)) | |
792 | continue; | |
793 | } | |
794 | #endif | |
795 | ||
a0ebb746 | 796 | if (NILP (visible_ok)) |
db732e5a | 797 | tem = Fget_buffer_window (buf, Qt); |
a0ebb746 JB |
798 | else |
799 | tem = Qnil; | |
265a9e55 | 800 | if (NILP (tem)) |
1ab256cb | 801 | return buf; |
265a9e55 | 802 | if (NILP (notsogood)) |
1ab256cb RM |
803 | notsogood = buf; |
804 | } | |
265a9e55 | 805 | if (!NILP (notsogood)) |
1ab256cb RM |
806 | return notsogood; |
807 | return Fget_buffer_create (build_string ("*scratch*")); | |
808 | } | |
809 | \f | |
316784fb KH |
810 | DEFUN ("buffer-disable-undo", Fbuffer_disable_undo, Sbuffer_disable_undo, |
811 | 0, 1, "", | |
5b8bcf48 RS |
812 | "Make BUFFER stop keeping undo information.\n\ |
813 | No argument or nil as argument means do this for the current buffer.") | |
ffd56f97 JB |
814 | (buffer) |
815 | register Lisp_Object buffer; | |
1ab256cb | 816 | { |
ffd56f97 JB |
817 | Lisp_Object real_buffer; |
818 | ||
819 | if (NILP (buffer)) | |
67180c6a | 820 | XSETBUFFER (real_buffer, current_buffer); |
ffd56f97 JB |
821 | else |
822 | { | |
823 | real_buffer = Fget_buffer (buffer); | |
824 | if (NILP (real_buffer)) | |
825 | nsberror (buffer); | |
826 | } | |
827 | ||
828 | XBUFFER (real_buffer)->undo_list = Qt; | |
829 | ||
1ab256cb RM |
830 | return Qnil; |
831 | } | |
832 | ||
833 | DEFUN ("buffer-enable-undo", Fbuffer_enable_undo, Sbuffer_enable_undo, | |
834 | 0, 1, "", | |
835 | "Start keeping undo information for buffer BUFFER.\n\ | |
836 | No argument or nil as argument means do this for the current buffer.") | |
ffd56f97 JB |
837 | (buffer) |
838 | register Lisp_Object buffer; | |
1ab256cb | 839 | { |
ffd56f97 | 840 | Lisp_Object real_buffer; |
1ab256cb | 841 | |
ffd56f97 | 842 | if (NILP (buffer)) |
67180c6a | 843 | XSETBUFFER (real_buffer, current_buffer); |
1ab256cb RM |
844 | else |
845 | { | |
ffd56f97 JB |
846 | real_buffer = Fget_buffer (buffer); |
847 | if (NILP (real_buffer)) | |
848 | nsberror (buffer); | |
1ab256cb RM |
849 | } |
850 | ||
ffd56f97 JB |
851 | if (EQ (XBUFFER (real_buffer)->undo_list, Qt)) |
852 | XBUFFER (real_buffer)->undo_list = Qnil; | |
1ab256cb RM |
853 | |
854 | return Qnil; | |
855 | } | |
856 | ||
857 | /* | |
858 | DEFVAR_LISP ("kill-buffer-hook", no_cell, "\ | |
859 | Hook to be run (by `run-hooks', which see) when a buffer is killed.\n\ | |
860 | The buffer being killed will be current while the hook is running.\n\ | |
861 | See `kill-buffer'." | |
862 | */ | |
863 | DEFUN ("kill-buffer", Fkill_buffer, Skill_buffer, 1, 1, "bKill buffer: ", | |
864 | "Kill the buffer BUFFER.\n\ | |
865 | The argument may be a buffer or may be the name of a buffer.\n\ | |
866 | An argument of nil means kill the current buffer.\n\n\ | |
867 | Value is t if the buffer is actually killed, nil if user says no.\n\n\ | |
868 | The value of `kill-buffer-hook' (which may be local to that buffer),\n\ | |
869 | if not void, is a list of functions to be called, with no arguments,\n\ | |
870 | before the buffer is actually killed. The buffer to be killed is current\n\ | |
871 | when the hook functions are called.\n\n\ | |
872 | Any processes that have this buffer as the `process-buffer' are killed\n\ | |
873 | with `delete-process'.") | |
874 | (bufname) | |
875 | Lisp_Object bufname; | |
876 | { | |
877 | Lisp_Object buf; | |
878 | register struct buffer *b; | |
879 | register Lisp_Object tem; | |
880 | register struct Lisp_Marker *m; | |
881 | struct gcpro gcpro1, gcpro2; | |
882 | ||
265a9e55 | 883 | if (NILP (bufname)) |
1ab256cb RM |
884 | buf = Fcurrent_buffer (); |
885 | else | |
886 | buf = Fget_buffer (bufname); | |
265a9e55 | 887 | if (NILP (buf)) |
1ab256cb RM |
888 | nsberror (bufname); |
889 | ||
890 | b = XBUFFER (buf); | |
891 | ||
4a4a9db5 KH |
892 | /* Avoid trouble for buffer already dead. */ |
893 | if (NILP (b->name)) | |
894 | return Qnil; | |
895 | ||
1ab256cb | 896 | /* Query if the buffer is still modified. */ |
265a9e55 | 897 | if (INTERACTIVE && !NILP (b->filename) |
336cd056 | 898 | && BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) |
1ab256cb RM |
899 | { |
900 | GCPRO2 (buf, bufname); | |
901 | tem = do_yes_or_no_p (format1 ("Buffer %s modified; kill anyway? ", | |
902 | XSTRING (b->name)->data)); | |
903 | UNGCPRO; | |
265a9e55 | 904 | if (NILP (tem)) |
1ab256cb RM |
905 | return Qnil; |
906 | } | |
907 | ||
dcdffbf6 | 908 | /* Run hooks with the buffer to be killed the current buffer. */ |
1ab256cb RM |
909 | { |
910 | register Lisp_Object val; | |
911 | int count = specpdl_ptr - specpdl; | |
dcdffbf6 | 912 | Lisp_Object list; |
1ab256cb RM |
913 | |
914 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
915 | set_buffer_internal (b); | |
dcdffbf6 RS |
916 | |
917 | /* First run the query functions; if any query is answered no, | |
918 | don't kill the buffer. */ | |
919 | for (list = Vkill_buffer_query_functions; !NILP (list); list = Fcdr (list)) | |
920 | { | |
921 | tem = call0 (Fcar (list)); | |
922 | if (NILP (tem)) | |
923 | return unbind_to (count, Qnil); | |
924 | } | |
925 | ||
926 | /* Then run the hooks. */ | |
fd186f07 RS |
927 | if (!NILP (Vrun_hooks)) |
928 | call1 (Vrun_hooks, Qkill_buffer_hook); | |
1ab256cb RM |
929 | unbind_to (count, Qnil); |
930 | } | |
931 | ||
932 | /* We have no more questions to ask. Verify that it is valid | |
933 | to kill the buffer. This must be done after the questions | |
934 | since anything can happen within do_yes_or_no_p. */ | |
935 | ||
936 | /* Don't kill the minibuffer now current. */ | |
937 | if (EQ (buf, XWINDOW (minibuf_window)->buffer)) | |
938 | return Qnil; | |
939 | ||
265a9e55 | 940 | if (NILP (b->name)) |
1ab256cb RM |
941 | return Qnil; |
942 | ||
336cd056 RS |
943 | /* When we kill a base buffer, kill all its indirect buffers. |
944 | We do it at this stage so nothing terrible happens if they | |
945 | ask questions or their hooks get errors. */ | |
946 | if (! b->base_buffer) | |
947 | { | |
948 | struct buffer *other; | |
949 | ||
950 | GCPRO1 (buf); | |
951 | ||
952 | for (other = all_buffers; other; other = other->next) | |
4a4a9db5 KH |
953 | /* all_buffers contains dead buffers too; |
954 | don't re-kill them. */ | |
955 | if (other->base_buffer == b && !NILP (other->name)) | |
336cd056 RS |
956 | { |
957 | Lisp_Object buf; | |
958 | XSETBUFFER (buf, other); | |
959 | Fkill_buffer (buf); | |
960 | } | |
961 | ||
962 | UNGCPRO; | |
963 | } | |
964 | ||
1ab256cb RM |
965 | /* Make this buffer not be current. |
966 | In the process, notice if this is the sole visible buffer | |
967 | and give up if so. */ | |
968 | if (b == current_buffer) | |
969 | { | |
172a9c1f | 970 | tem = Fother_buffer (buf, Qnil); |
1ab256cb RM |
971 | Fset_buffer (tem); |
972 | if (b == current_buffer) | |
973 | return Qnil; | |
974 | } | |
975 | ||
976 | /* Now there is no question: we can kill the buffer. */ | |
977 | ||
978 | #ifdef CLASH_DETECTION | |
979 | /* Unlock this buffer's file, if it is locked. */ | |
980 | unlock_buffer (b); | |
981 | #endif /* CLASH_DETECTION */ | |
982 | ||
1ab256cb | 983 | kill_buffer_processes (buf); |
1ab256cb RM |
984 | |
985 | tem = Vinhibit_quit; | |
986 | Vinhibit_quit = Qt; | |
987 | Vbuffer_alist = Fdelq (Frassq (buf, Vbuffer_alist), Vbuffer_alist); | |
988 | Freplace_buffer_in_windows (buf); | |
989 | Vinhibit_quit = tem; | |
990 | ||
9b59d6d0 | 991 | /* Delete any auto-save file, if we saved it in this session. */ |
a7a60ce9 | 992 | if (STRINGP (b->auto_save_file_name) |
9b59d6d0 | 993 | && b->auto_save_modified != 0) |
1ab256cb RM |
994 | { |
995 | Lisp_Object tem; | |
996 | tem = Fsymbol_value (intern ("delete-auto-save-files")); | |
265a9e55 | 997 | if (! NILP (tem)) |
cbb6a418 | 998 | internal_delete_file (b->auto_save_file_name); |
1ab256cb RM |
999 | } |
1000 | ||
4a4a9db5 KH |
1001 | if (b->base_buffer) |
1002 | { | |
1003 | /* Unchain all markers that belong to this indirect buffer. | |
1004 | Don't unchain the markers that belong to the base buffer | |
1005 | or its other indirect buffers. */ | |
1006 | for (tem = BUF_MARKERS (b); !NILP (tem); ) | |
1007 | { | |
1008 | Lisp_Object next; | |
1009 | m = XMARKER (tem); | |
1010 | next = m->chain; | |
1011 | if (m->buffer == b) | |
1012 | unchain_marker (tem); | |
1013 | tem = next; | |
1014 | } | |
1015 | } | |
1016 | else | |
1ab256cb | 1017 | { |
4a4a9db5 | 1018 | /* Unchain all markers of this buffer and its indirect buffers. |
336cd056 | 1019 | and leave them pointing nowhere. */ |
4a4a9db5 | 1020 | for (tem = BUF_MARKERS (b); !NILP (tem); ) |
336cd056 RS |
1021 | { |
1022 | m = XMARKER (tem); | |
1023 | m->buffer = 0; | |
1024 | tem = m->chain; | |
1025 | m->chain = Qnil; | |
1026 | } | |
1027 | BUF_MARKERS (b) = Qnil; | |
1ab256cb | 1028 | |
336cd056 RS |
1029 | #ifdef USE_TEXT_PROPERTIES |
1030 | BUF_INTERVALS (b) = NULL_INTERVAL; | |
1031 | #endif | |
1032 | ||
1033 | /* Perhaps we should explicitly free the interval tree here... */ | |
1034 | } | |
33f7013e | 1035 | |
2f3f993b RS |
1036 | /* Reset the local variables, so that this buffer's local values |
1037 | won't be protected from GC. They would be protected | |
1038 | if they happened to remain encached in their symbols. | |
1039 | This gets rid of them for certain. */ | |
1040 | swap_out_buffer_local_variables (b); | |
1041 | reset_buffer_local_variables (b); | |
1042 | ||
1ab256cb | 1043 | b->name = Qnil; |
336cd056 | 1044 | |
9ac0d9e0 | 1045 | BLOCK_INPUT; |
336cd056 RS |
1046 | if (! b->base_buffer) |
1047 | BUFFER_FREE (BUF_BEG_ADDR (b)); | |
1048 | ||
28e969dd JB |
1049 | if (b->newline_cache) |
1050 | { | |
1051 | free_region_cache (b->newline_cache); | |
1052 | b->newline_cache = 0; | |
1053 | } | |
1054 | if (b->width_run_cache) | |
1055 | { | |
1056 | free_region_cache (b->width_run_cache); | |
1057 | b->width_run_cache = 0; | |
1058 | } | |
1059 | b->width_table = Qnil; | |
9ac0d9e0 | 1060 | UNBLOCK_INPUT; |
1ab256cb RM |
1061 | b->undo_list = Qnil; |
1062 | ||
1063 | return Qt; | |
1064 | } | |
1065 | \f | |
36a8c287 JB |
1066 | /* Move the assoc for buffer BUF to the front of buffer-alist. Since |
1067 | we do this each time BUF is selected visibly, the more recently | |
1068 | selected buffers are always closer to the front of the list. This | |
1069 | means that other_buffer is more likely to choose a relevant buffer. */ | |
1ab256cb RM |
1070 | |
1071 | record_buffer (buf) | |
1072 | Lisp_Object buf; | |
1073 | { | |
1074 | register Lisp_Object link, prev; | |
1075 | ||
1076 | prev = Qnil; | |
1077 | for (link = Vbuffer_alist; CONSP (link); link = XCONS (link)->cdr) | |
1078 | { | |
1079 | if (EQ (XCONS (XCONS (link)->car)->cdr, buf)) | |
1080 | break; | |
1081 | prev = link; | |
1082 | } | |
1083 | ||
36a8c287 JB |
1084 | /* Effectively do Vbuffer_alist = Fdelq (link, Vbuffer_alist); |
1085 | we cannot use Fdelq itself here because it allows quitting. */ | |
1ab256cb | 1086 | |
265a9e55 | 1087 | if (NILP (prev)) |
1ab256cb RM |
1088 | Vbuffer_alist = XCONS (Vbuffer_alist)->cdr; |
1089 | else | |
1090 | XCONS (prev)->cdr = XCONS (XCONS (prev)->cdr)->cdr; | |
1091 | ||
1092 | XCONS(link)->cdr = Vbuffer_alist; | |
1093 | Vbuffer_alist = link; | |
1094 | } | |
1095 | ||
a9ee7a59 KH |
1096 | DEFUN ("set-buffer-major-mode", Fset_buffer_major_mode, Sset_buffer_major_mode, 1, 1, 0, |
1097 | "Set an appropriate major mode for BUFFER, according to `default-major-mode'.\n\ | |
1098 | Use this function before selecting the buffer, since it may need to inspect\n\ | |
1099 | the current buffer's major mode.") | |
1100 | (buf) | |
1101 | Lisp_Object buf; | |
1102 | { | |
1103 | int count; | |
1104 | Lisp_Object function; | |
1105 | ||
1106 | function = buffer_defaults.major_mode; | |
1107 | if (NILP (function) && NILP (Fget (current_buffer->major_mode, Qmode_class))) | |
1108 | function = current_buffer->major_mode; | |
1109 | ||
1110 | if (NILP (function) || EQ (function, Qfundamental_mode)) | |
1111 | return Qnil; | |
1112 | ||
1113 | count = specpdl_ptr - specpdl; | |
1114 | ||
1115 | /* To select a nonfundamental mode, | |
1116 | select the buffer temporarily and then call the mode function. */ | |
1117 | ||
1118 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1119 | ||
1120 | Fset_buffer (buf); | |
1121 | call0 (function); | |
1122 | ||
1123 | return unbind_to (count, Qnil); | |
1124 | } | |
1125 | ||
1ab256cb RM |
1126 | DEFUN ("switch-to-buffer", Fswitch_to_buffer, Sswitch_to_buffer, 1, 2, "BSwitch to buffer: ", |
1127 | "Select buffer BUFFER in the current window.\n\ | |
1128 | BUFFER may be a buffer or a buffer name.\n\ | |
1129 | Optional second arg NORECORD non-nil means\n\ | |
1130 | do not put this buffer at the front of the list of recently selected ones.\n\ | |
1131 | \n\ | |
1132 | WARNING: This is NOT the way to work on another buffer temporarily\n\ | |
1133 | within a Lisp program! Use `set-buffer' instead. That avoids messing with\n\ | |
1134 | the window-buffer correspondences.") | |
1135 | (bufname, norecord) | |
1136 | Lisp_Object bufname, norecord; | |
1137 | { | |
1138 | register Lisp_Object buf; | |
1139 | Lisp_Object tem; | |
1140 | ||
1141 | if (EQ (minibuf_window, selected_window)) | |
1142 | error ("Cannot switch buffers in minibuffer window"); | |
1143 | tem = Fwindow_dedicated_p (selected_window); | |
265a9e55 | 1144 | if (!NILP (tem)) |
1ab256cb RM |
1145 | error ("Cannot switch buffers in a dedicated window"); |
1146 | ||
265a9e55 | 1147 | if (NILP (bufname)) |
172a9c1f | 1148 | buf = Fother_buffer (Fcurrent_buffer (), Qnil); |
1ab256cb | 1149 | else |
a9ee7a59 KH |
1150 | { |
1151 | buf = Fget_buffer (bufname); | |
1152 | if (NILP (buf)) | |
1153 | { | |
1154 | buf = Fget_buffer_create (bufname); | |
1155 | Fset_buffer_major_mode (buf); | |
1156 | } | |
1157 | } | |
1ab256cb | 1158 | Fset_buffer (buf); |
265a9e55 | 1159 | if (NILP (norecord)) |
1ab256cb RM |
1160 | record_buffer (buf); |
1161 | ||
1162 | Fset_window_buffer (EQ (selected_window, minibuf_window) | |
5fcd022d JB |
1163 | ? Fnext_window (minibuf_window, Qnil, Qnil) |
1164 | : selected_window, | |
1ab256cb RM |
1165 | buf); |
1166 | ||
e8b3a22d | 1167 | return buf; |
1ab256cb RM |
1168 | } |
1169 | ||
1170 | DEFUN ("pop-to-buffer", Fpop_to_buffer, Spop_to_buffer, 1, 2, 0, | |
1171 | "Select buffer BUFFER in some window, preferably a different one.\n\ | |
1172 | If BUFFER is nil, then some other buffer is chosen.\n\ | |
1173 | If `pop-up-windows' is non-nil, windows can be split to do this.\n\ | |
1174 | If optional second arg OTHER-WINDOW is non-nil, insist on finding another\n\ | |
1175 | window even if BUFFER is already visible in the selected window.") | |
1176 | (bufname, other) | |
1177 | Lisp_Object bufname, other; | |
1178 | { | |
1179 | register Lisp_Object buf; | |
265a9e55 | 1180 | if (NILP (bufname)) |
172a9c1f | 1181 | buf = Fother_buffer (Fcurrent_buffer (), Qnil); |
1ab256cb | 1182 | else |
7c2087ee RS |
1183 | { |
1184 | buf = Fget_buffer (bufname); | |
1185 | if (NILP (buf)) | |
1186 | { | |
1187 | buf = Fget_buffer_create (bufname); | |
1188 | Fset_buffer_major_mode (buf); | |
1189 | } | |
1190 | } | |
1ab256cb RM |
1191 | Fset_buffer (buf); |
1192 | record_buffer (buf); | |
1193 | Fselect_window (Fdisplay_buffer (buf, other)); | |
e8b3a22d | 1194 | return buf; |
1ab256cb RM |
1195 | } |
1196 | ||
1197 | DEFUN ("current-buffer", Fcurrent_buffer, Scurrent_buffer, 0, 0, 0, | |
1198 | "Return the current buffer as a Lisp object.") | |
1199 | () | |
1200 | { | |
1201 | register Lisp_Object buf; | |
67180c6a | 1202 | XSETBUFFER (buf, current_buffer); |
1ab256cb RM |
1203 | return buf; |
1204 | } | |
1205 | \f | |
c7aa5005 | 1206 | /* Set the current buffer to B. */ |
1ab256cb RM |
1207 | |
1208 | void | |
1209 | set_buffer_internal (b) | |
1210 | register struct buffer *b; | |
1211 | { | |
1212 | register struct buffer *old_buf; | |
1213 | register Lisp_Object tail, valcontents; | |
a7a60ce9 | 1214 | Lisp_Object tem; |
1ab256cb RM |
1215 | |
1216 | if (current_buffer == b) | |
1217 | return; | |
1218 | ||
1219 | windows_or_buffers_changed = 1; | |
c7aa5005 KH |
1220 | set_buffer_internal_1 (b); |
1221 | } | |
1222 | ||
1223 | /* Set the current buffer to B, and do not set windows_or_buffers_changed. | |
1224 | This is used by redisplay. */ | |
1225 | ||
1226 | void | |
1227 | set_buffer_internal_1 (b) | |
1228 | register struct buffer *b; | |
1229 | { | |
1230 | register struct buffer *old_buf; | |
1231 | register Lisp_Object tail, valcontents; | |
1232 | Lisp_Object tem; | |
1233 | ||
1234 | if (current_buffer == b) | |
1235 | return; | |
1236 | ||
1ab256cb RM |
1237 | old_buf = current_buffer; |
1238 | current_buffer = b; | |
1239 | last_known_column_point = -1; /* invalidate indentation cache */ | |
1240 | ||
336cd056 RS |
1241 | if (old_buf) |
1242 | { | |
1243 | /* Put the undo list back in the base buffer, so that it appears | |
1244 | that an indirect buffer shares the undo list of its base. */ | |
1245 | if (old_buf->base_buffer) | |
1246 | old_buf->base_buffer->undo_list = old_buf->undo_list; | |
1247 | ||
1248 | /* If the old current buffer has markers to record PT, BEGV and ZV | |
1249 | when it is not current, update them now. */ | |
1250 | if (! NILP (old_buf->pt_marker)) | |
1251 | { | |
1252 | Lisp_Object obuf; | |
1253 | XSETBUFFER (obuf, old_buf); | |
1254 | Fset_marker (old_buf->pt_marker, BUF_PT (old_buf), obuf); | |
1255 | } | |
1256 | if (! NILP (old_buf->begv_marker)) | |
1257 | { | |
1258 | Lisp_Object obuf; | |
1259 | XSETBUFFER (obuf, old_buf); | |
1260 | Fset_marker (old_buf->begv_marker, BUF_BEGV (old_buf), obuf); | |
1261 | } | |
1262 | if (! NILP (old_buf->zv_marker)) | |
1263 | { | |
1264 | Lisp_Object obuf; | |
1265 | XSETBUFFER (obuf, old_buf); | |
1266 | Fset_marker (old_buf->zv_marker, BUF_ZV (old_buf), obuf); | |
1267 | } | |
1268 | } | |
1269 | ||
1270 | /* Get the undo list from the base buffer, so that it appears | |
1271 | that an indirect buffer shares the undo list of its base. */ | |
1272 | if (b->base_buffer) | |
1273 | b->undo_list = b->base_buffer->undo_list; | |
1274 | ||
1275 | /* If the new current buffer has markers to record PT, BEGV and ZV | |
1276 | when it is not current, fetch them now. */ | |
1277 | if (! NILP (b->pt_marker)) | |
1278 | BUF_PT (b) = marker_position (b->pt_marker); | |
1279 | if (! NILP (b->begv_marker)) | |
1280 | BUF_BEGV (b) = marker_position (b->begv_marker); | |
1281 | if (! NILP (b->zv_marker)) | |
1282 | BUF_ZV (b) = marker_position (b->zv_marker); | |
1283 | ||
1ab256cb RM |
1284 | /* Look down buffer's list of local Lisp variables |
1285 | to find and update any that forward into C variables. */ | |
1286 | ||
265a9e55 | 1287 | for (tail = b->local_var_alist; !NILP (tail); tail = XCONS (tail)->cdr) |
1ab256cb RM |
1288 | { |
1289 | valcontents = XSYMBOL (XCONS (XCONS (tail)->car)->car)->value; | |
a7a60ce9 KH |
1290 | if ((BUFFER_LOCAL_VALUEP (valcontents) |
1291 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
fdc6e516 | 1292 | && (tem = XBUFFER_LOCAL_VALUE (valcontents)->car, |
a7a60ce9 | 1293 | (BOOLFWDP (tem) || INTFWDP (tem) || OBJFWDP (tem)))) |
1ab256cb RM |
1294 | /* Just reference the variable |
1295 | to cause it to become set for this buffer. */ | |
1296 | Fsymbol_value (XCONS (XCONS (tail)->car)->car); | |
1297 | } | |
1298 | ||
1299 | /* Do the same with any others that were local to the previous buffer */ | |
1300 | ||
1301 | if (old_buf) | |
265a9e55 | 1302 | for (tail = old_buf->local_var_alist; !NILP (tail); tail = XCONS (tail)->cdr) |
1ab256cb RM |
1303 | { |
1304 | valcontents = XSYMBOL (XCONS (XCONS (tail)->car)->car)->value; | |
a7a60ce9 KH |
1305 | if ((BUFFER_LOCAL_VALUEP (valcontents) |
1306 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
fdc6e516 | 1307 | && (tem = XBUFFER_LOCAL_VALUE (valcontents)->car, |
a7a60ce9 | 1308 | (BOOLFWDP (tem) || INTFWDP (tem) || OBJFWDP (tem)))) |
1ab256cb RM |
1309 | /* Just reference the variable |
1310 | to cause it to become set for this buffer. */ | |
1311 | Fsymbol_value (XCONS (XCONS (tail)->car)->car); | |
1312 | } | |
1313 | } | |
1314 | ||
336cd056 | 1315 | /* Switch to buffer B temporarily for redisplay purposes. |
bbbe9545 | 1316 | This avoids certain things that don't need to be done within redisplay. */ |
336cd056 RS |
1317 | |
1318 | void | |
1319 | set_buffer_temp (b) | |
1320 | struct buffer *b; | |
1321 | { | |
1322 | register struct buffer *old_buf; | |
1323 | ||
1324 | if (current_buffer == b) | |
1325 | return; | |
1326 | ||
1327 | old_buf = current_buffer; | |
1328 | current_buffer = b; | |
1329 | ||
1330 | if (old_buf) | |
1331 | { | |
1332 | /* If the old current buffer has markers to record PT, BEGV and ZV | |
1333 | when it is not current, update them now. */ | |
1334 | if (! NILP (old_buf->pt_marker)) | |
1335 | { | |
1336 | Lisp_Object obuf; | |
1337 | XSETBUFFER (obuf, old_buf); | |
1338 | Fset_marker (old_buf->pt_marker, BUF_PT (old_buf), obuf); | |
1339 | } | |
1340 | if (! NILP (old_buf->begv_marker)) | |
1341 | { | |
1342 | Lisp_Object obuf; | |
1343 | XSETBUFFER (obuf, old_buf); | |
1344 | Fset_marker (old_buf->begv_marker, BUF_BEGV (old_buf), obuf); | |
1345 | } | |
1346 | if (! NILP (old_buf->zv_marker)) | |
1347 | { | |
1348 | Lisp_Object obuf; | |
1349 | XSETBUFFER (obuf, old_buf); | |
1350 | Fset_marker (old_buf->zv_marker, BUF_ZV (old_buf), obuf); | |
1351 | } | |
1352 | } | |
1353 | ||
1354 | /* If the new current buffer has markers to record PT, BEGV and ZV | |
1355 | when it is not current, fetch them now. */ | |
1356 | if (! NILP (b->pt_marker)) | |
1357 | BUF_PT (b) = marker_position (b->pt_marker); | |
1358 | if (! NILP (b->begv_marker)) | |
1359 | BUF_BEGV (b) = marker_position (b->begv_marker); | |
1360 | if (! NILP (b->zv_marker)) | |
1361 | BUF_ZV (b) = marker_position (b->zv_marker); | |
1362 | } | |
1363 | ||
1ab256cb RM |
1364 | DEFUN ("set-buffer", Fset_buffer, Sset_buffer, 1, 1, 0, |
1365 | "Make the buffer BUFFER current for editing operations.\n\ | |
1366 | BUFFER may be a buffer or the name of an existing buffer.\n\ | |
1367 | See also `save-excursion' when you want to make a buffer current temporarily.\n\ | |
1368 | This function does not display the buffer, so its effect ends\n\ | |
1369 | when the current command terminates.\n\ | |
1370 | Use `switch-to-buffer' or `pop-to-buffer' to switch buffers permanently.") | |
1371 | (bufname) | |
1372 | register Lisp_Object bufname; | |
1373 | { | |
1374 | register Lisp_Object buffer; | |
1375 | buffer = Fget_buffer (bufname); | |
265a9e55 | 1376 | if (NILP (buffer)) |
1ab256cb | 1377 | nsberror (bufname); |
265a9e55 | 1378 | if (NILP (XBUFFER (buffer)->name)) |
1ab256cb RM |
1379 | error ("Selecting deleted buffer"); |
1380 | set_buffer_internal (XBUFFER (buffer)); | |
1381 | return buffer; | |
1382 | } | |
1383 | \f | |
1384 | DEFUN ("barf-if-buffer-read-only", Fbarf_if_buffer_read_only, | |
1385 | Sbarf_if_buffer_read_only, 0, 0, 0, | |
1386 | "Signal a `buffer-read-only' error if the current buffer is read-only.") | |
1387 | () | |
1388 | { | |
a96b68f1 RS |
1389 | if (!NILP (current_buffer->read_only) |
1390 | && NILP (Vinhibit_read_only)) | |
1ab256cb RM |
1391 | Fsignal (Qbuffer_read_only, (Fcons (Fcurrent_buffer (), Qnil))); |
1392 | return Qnil; | |
1393 | } | |
1394 | ||
1395 | DEFUN ("bury-buffer", Fbury_buffer, Sbury_buffer, 0, 1, "", | |
1396 | "Put BUFFER at the end of the list of all buffers.\n\ | |
1397 | There it is the least likely candidate for `other-buffer' to return;\n\ | |
528415e7 | 1398 | thus, the least likely buffer for \\[switch-to-buffer] to select by default.\n\ |
a5611885 JB |
1399 | If BUFFER is nil or omitted, bury the current buffer.\n\ |
1400 | Also, if BUFFER is nil or omitted, remove the current buffer from the\n\ | |
1401 | selected window if it is displayed there.") | |
1ab256cb RM |
1402 | (buf) |
1403 | register Lisp_Object buf; | |
1404 | { | |
b271272a | 1405 | /* Figure out what buffer we're going to bury. */ |
265a9e55 | 1406 | if (NILP (buf)) |
a5611885 | 1407 | { |
67180c6a | 1408 | XSETBUFFER (buf, current_buffer); |
a5611885 JB |
1409 | |
1410 | /* If we're burying the current buffer, unshow it. */ | |
5fcd022d | 1411 | Fswitch_to_buffer (Fother_buffer (buf, Qnil), Qnil); |
a5611885 | 1412 | } |
1ab256cb RM |
1413 | else |
1414 | { | |
1415 | Lisp_Object buf1; | |
1416 | ||
1417 | buf1 = Fget_buffer (buf); | |
265a9e55 | 1418 | if (NILP (buf1)) |
1ab256cb RM |
1419 | nsberror (buf); |
1420 | buf = buf1; | |
b271272a JB |
1421 | } |
1422 | ||
a5611885 | 1423 | /* Move buf to the end of the buffer list. */ |
b271272a JB |
1424 | { |
1425 | register Lisp_Object aelt, link; | |
1426 | ||
1427 | aelt = Frassq (buf, Vbuffer_alist); | |
1428 | link = Fmemq (aelt, Vbuffer_alist); | |
1429 | Vbuffer_alist = Fdelq (aelt, Vbuffer_alist); | |
1430 | XCONS (link)->cdr = Qnil; | |
1431 | Vbuffer_alist = nconc2 (Vbuffer_alist, link); | |
1432 | } | |
1ab256cb | 1433 | |
1ab256cb RM |
1434 | return Qnil; |
1435 | } | |
1436 | \f | |
c922bc55 | 1437 | DEFUN ("erase-buffer", Ferase_buffer, Serase_buffer, 0, 0, "*", |
1ab256cb | 1438 | "Delete the entire contents of the current buffer.\n\ |
2950a20e | 1439 | Any narrowing restriction in effect (see `narrow-to-region') is removed,\n\ |
1ab256cb RM |
1440 | so the buffer is truly empty after this.") |
1441 | () | |
1442 | { | |
1443 | Fwiden (); | |
1444 | del_range (BEG, Z); | |
1445 | current_buffer->last_window_start = 1; | |
1446 | /* Prevent warnings, or suspension of auto saving, that would happen | |
1447 | if future size is less than past size. Use of erase-buffer | |
1448 | implies that the future text is not really related to the past text. */ | |
8d7a4592 | 1449 | XSETFASTINT (current_buffer->save_length, 0); |
1ab256cb RM |
1450 | return Qnil; |
1451 | } | |
1452 | ||
1453 | validate_region (b, e) | |
1454 | register Lisp_Object *b, *e; | |
1455 | { | |
1ab256cb RM |
1456 | CHECK_NUMBER_COERCE_MARKER (*b, 0); |
1457 | CHECK_NUMBER_COERCE_MARKER (*e, 1); | |
1458 | ||
1459 | if (XINT (*b) > XINT (*e)) | |
1460 | { | |
03192067 KH |
1461 | Lisp_Object tem; |
1462 | tem = *b; *b = *e; *e = tem; | |
1ab256cb RM |
1463 | } |
1464 | ||
1465 | if (!(BEGV <= XINT (*b) && XINT (*b) <= XINT (*e) | |
1466 | && XINT (*e) <= ZV)) | |
1467 | args_out_of_range (*b, *e); | |
1468 | } | |
1469 | \f | |
1ab256cb RM |
1470 | DEFUN ("kill-all-local-variables", Fkill_all_local_variables, Skill_all_local_variables, |
1471 | 0, 0, 0, | |
1472 | "Switch to Fundamental mode by killing current buffer's local variables.\n\ | |
1473 | Most local variable bindings are eliminated so that the default values\n\ | |
1474 | become effective once more. Also, the syntax table is set from\n\ | |
1475 | `standard-syntax-table', the local keymap is set to nil,\n\ | |
1476 | and the abbrev table from `fundamental-mode-abbrev-table'.\n\ | |
1477 | This function also forces redisplay of the mode line.\n\ | |
1478 | \n\ | |
1479 | Every function to select a new major mode starts by\n\ | |
1480 | calling this function.\n\n\ | |
1481 | As a special exception, local variables whose names have\n\ | |
c5a15222 RS |
1482 | a non-nil `permanent-local' property are not eliminated by this function.\n\ |
1483 | \n\ | |
1484 | The first thing this function does is run\n\ | |
1485 | the normal hook `change-major-mode-hook'.") | |
1ab256cb RM |
1486 | () |
1487 | { | |
1488 | register Lisp_Object alist, sym, tem; | |
1489 | Lisp_Object oalist; | |
7410477a | 1490 | |
fd186f07 RS |
1491 | if (!NILP (Vrun_hooks)) |
1492 | call1 (Vrun_hooks, intern ("change-major-mode-hook")); | |
1ab256cb RM |
1493 | oalist = current_buffer->local_var_alist; |
1494 | ||
2f3f993b RS |
1495 | /* Make sure none of the bindings in oalist |
1496 | remain swapped in, in their symbols. */ | |
1ab256cb | 1497 | |
2f3f993b | 1498 | swap_out_buffer_local_variables (current_buffer); |
1ab256cb RM |
1499 | |
1500 | /* Actually eliminate all local bindings of this buffer. */ | |
1501 | ||
1502 | reset_buffer_local_variables (current_buffer); | |
1503 | ||
1504 | /* Redisplay mode lines; we are changing major mode. */ | |
1505 | ||
1506 | update_mode_lines++; | |
1507 | ||
1508 | /* Any which are supposed to be permanent, | |
1509 | make local again, with the same values they had. */ | |
1510 | ||
265a9e55 | 1511 | for (alist = oalist; !NILP (alist); alist = XCONS (alist)->cdr) |
1ab256cb RM |
1512 | { |
1513 | sym = XCONS (XCONS (alist)->car)->car; | |
1514 | tem = Fget (sym, Qpermanent_local); | |
265a9e55 | 1515 | if (! NILP (tem)) |
01050cb5 RM |
1516 | { |
1517 | Fmake_local_variable (sym); | |
1518 | Fset (sym, XCONS (XCONS (alist)->car)->cdr); | |
1519 | } | |
1ab256cb RM |
1520 | } |
1521 | ||
1522 | /* Force mode-line redisplay. Useful here because all major mode | |
1523 | commands call this function. */ | |
1524 | update_mode_lines++; | |
1525 | ||
1526 | return Qnil; | |
1527 | } | |
2f3f993b RS |
1528 | |
1529 | /* Make sure no local variables remain set up with buffer B | |
1530 | for their current values. */ | |
1531 | ||
1532 | static void | |
1533 | swap_out_buffer_local_variables (b) | |
1534 | struct buffer *b; | |
1535 | { | |
1536 | Lisp_Object oalist, alist, sym, tem, buffer; | |
1537 | ||
1538 | XSETBUFFER (buffer, b); | |
1539 | oalist = b->local_var_alist; | |
1540 | ||
1541 | for (alist = oalist; !NILP (alist); alist = XCONS (alist)->cdr) | |
1542 | { | |
1543 | sym = XCONS (XCONS (alist)->car)->car; | |
1544 | ||
1545 | /* Need not do anything if some other buffer's binding is now encached. */ | |
1546 | tem = XCONS (XBUFFER_LOCAL_VALUE (XSYMBOL (sym)->value)->cdr)->car; | |
1547 | if (XBUFFER (tem) == current_buffer) | |
1548 | { | |
1549 | /* Symbol is set up for this buffer's old local value. | |
1550 | Set it up for the current buffer with the default value. */ | |
1551 | ||
1552 | tem = XCONS (XBUFFER_LOCAL_VALUE (XSYMBOL (sym)->value)->cdr)->cdr; | |
1553 | /* Store the symbol's current value into the alist entry | |
1554 | it is currently set up for. This is so that, if the | |
1555 | local is marked permanent, and we make it local again | |
1556 | later in Fkill_all_local_variables, we don't lose the value. */ | |
1557 | XCONS (XCONS (tem)->car)->cdr | |
1558 | = do_symval_forwarding (XBUFFER_LOCAL_VALUE (XSYMBOL (sym)->value)->car); | |
1559 | /* Switch to the symbol's default-value alist entry. */ | |
1560 | XCONS (tem)->car = tem; | |
1561 | /* Mark it as current for buffer B. */ | |
1562 | XCONS (XBUFFER_LOCAL_VALUE (XSYMBOL (sym)->value)->cdr)->car | |
1563 | = buffer; | |
1564 | /* Store the current value into any forwarding in the symbol. */ | |
1565 | store_symval_forwarding (sym, XBUFFER_LOCAL_VALUE (XSYMBOL (sym)->value)->car, | |
1566 | XCONS (tem)->cdr); | |
1567 | } | |
1568 | } | |
1569 | } | |
1ab256cb | 1570 | \f |
2eec3b4e RS |
1571 | /* Find all the overlays in the current buffer that contain position POS. |
1572 | Return the number found, and store them in a vector in *VEC_PTR. | |
1573 | Store in *LEN_PTR the size allocated for the vector. | |
52f8ec73 JB |
1574 | Store in *NEXT_PTR the next position after POS where an overlay starts, |
1575 | or ZV if there are no more overlays. | |
bbbe9545 | 1576 | Store in *PREV_PTR the previous position before POS where an overlay ends, |
239c932b RS |
1577 | or BEGV if there are no previous overlays. |
1578 | NEXT_PTR and/or PREV_PTR may be 0, meaning don't store that info. | |
2eec3b4e RS |
1579 | |
1580 | *VEC_PTR and *LEN_PTR should contain a valid vector and size | |
61d54cd5 RS |
1581 | when this function is called. |
1582 | ||
1583 | If EXTEND is non-zero, we make the vector bigger if necessary. | |
1584 | If EXTEND is zero, we never extend the vector, | |
1585 | and we store only as many overlays as will fit. | |
1586 | But we still return the total number of overlays. */ | |
2eec3b4e RS |
1587 | |
1588 | int | |
239c932b | 1589 | overlays_at (pos, extend, vec_ptr, len_ptr, next_ptr, prev_ptr) |
2eec3b4e | 1590 | int pos; |
61d54cd5 | 1591 | int extend; |
2eec3b4e RS |
1592 | Lisp_Object **vec_ptr; |
1593 | int *len_ptr; | |
1594 | int *next_ptr; | |
239c932b | 1595 | int *prev_ptr; |
1ab256cb | 1596 | { |
2eec3b4e RS |
1597 | Lisp_Object tail, overlay, start, end, result; |
1598 | int idx = 0; | |
1599 | int len = *len_ptr; | |
1600 | Lisp_Object *vec = *vec_ptr; | |
1601 | int next = ZV; | |
239c932b | 1602 | int prev = BEGV; |
61d54cd5 RS |
1603 | int inhibit_storing = 0; |
1604 | ||
2eec3b4e | 1605 | for (tail = current_buffer->overlays_before; |
8fc0589a | 1606 | GC_CONSP (tail); |
2eec3b4e RS |
1607 | tail = XCONS (tail)->cdr) |
1608 | { | |
239c932b | 1609 | int startpos, endpos; |
52f8ec73 | 1610 | |
2eec3b4e | 1611 | overlay = XCONS (tail)->car; |
1ab256cb | 1612 | |
2eec3b4e RS |
1613 | start = OVERLAY_START (overlay); |
1614 | end = OVERLAY_END (overlay); | |
239c932b RS |
1615 | endpos = OVERLAY_POSITION (end); |
1616 | if (endpos < pos) | |
1617 | { | |
1618 | if (prev < endpos) | |
1619 | prev = endpos; | |
1620 | break; | |
1621 | } | |
1622 | if (endpos == pos) | |
1623 | continue; | |
2eec3b4e RS |
1624 | startpos = OVERLAY_POSITION (start); |
1625 | if (startpos <= pos) | |
1626 | { | |
1627 | if (idx == len) | |
1628 | { | |
61d54cd5 RS |
1629 | /* The supplied vector is full. |
1630 | Either make it bigger, or don't store any more in it. */ | |
1631 | if (extend) | |
1632 | { | |
1633 | *len_ptr = len *= 2; | |
1634 | vec = (Lisp_Object *) xrealloc (vec, len * sizeof (Lisp_Object)); | |
1635 | *vec_ptr = vec; | |
1636 | } | |
1637 | else | |
1638 | inhibit_storing = 1; | |
2eec3b4e | 1639 | } |
61d54cd5 RS |
1640 | |
1641 | if (!inhibit_storing) | |
1642 | vec[idx] = overlay; | |
1643 | /* Keep counting overlays even if we can't return them all. */ | |
1644 | idx++; | |
2eec3b4e RS |
1645 | } |
1646 | else if (startpos < next) | |
1647 | next = startpos; | |
1648 | } | |
1649 | ||
1650 | for (tail = current_buffer->overlays_after; | |
8fc0589a | 1651 | GC_CONSP (tail); |
2eec3b4e | 1652 | tail = XCONS (tail)->cdr) |
1ab256cb | 1653 | { |
239c932b | 1654 | int startpos, endpos; |
52f8ec73 | 1655 | |
2eec3b4e | 1656 | overlay = XCONS (tail)->car; |
2eec3b4e RS |
1657 | |
1658 | start = OVERLAY_START (overlay); | |
1659 | end = OVERLAY_END (overlay); | |
1660 | startpos = OVERLAY_POSITION (start); | |
52f8ec73 | 1661 | if (pos < startpos) |
2eec3b4e RS |
1662 | { |
1663 | if (startpos < next) | |
1664 | next = startpos; | |
1665 | break; | |
1666 | } | |
239c932b RS |
1667 | endpos = OVERLAY_POSITION (end); |
1668 | if (pos < endpos) | |
2eec3b4e RS |
1669 | { |
1670 | if (idx == len) | |
1671 | { | |
61d54cd5 RS |
1672 | if (extend) |
1673 | { | |
1674 | *len_ptr = len *= 2; | |
1675 | vec = (Lisp_Object *) xrealloc (vec, len * sizeof (Lisp_Object)); | |
1676 | *vec_ptr = vec; | |
1677 | } | |
1678 | else | |
1679 | inhibit_storing = 1; | |
2eec3b4e | 1680 | } |
61d54cd5 RS |
1681 | |
1682 | if (!inhibit_storing) | |
1683 | vec[idx] = overlay; | |
1684 | idx++; | |
2eec3b4e | 1685 | } |
239c932b RS |
1686 | else if (endpos < pos && endpos > prev) |
1687 | prev = endpos; | |
1ab256cb RM |
1688 | } |
1689 | ||
239c932b RS |
1690 | if (next_ptr) |
1691 | *next_ptr = next; | |
1692 | if (prev_ptr) | |
1693 | *prev_ptr = prev; | |
2eec3b4e RS |
1694 | return idx; |
1695 | } | |
fc04fa47 KH |
1696 | |
1697 | /* Fast function to just test if we're at an overlay boundary. */ | |
1698 | int | |
1699 | overlay_touches_p (pos) | |
1700 | int pos; | |
1701 | { | |
1702 | Lisp_Object tail, overlay; | |
1703 | ||
1704 | for (tail = current_buffer->overlays_before; GC_CONSP (tail); | |
1705 | tail = XCONS (tail)->cdr) | |
1706 | { | |
1707 | int endpos; | |
1708 | ||
1709 | overlay = XCONS (tail)->car; | |
1710 | if (!GC_OVERLAYP (overlay)) | |
1711 | abort (); | |
1712 | ||
1713 | endpos = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
1714 | if (endpos < pos) | |
1715 | break; | |
1716 | if (endpos == pos || OVERLAY_POSITION (OVERLAY_START (overlay)) == pos) | |
1717 | return 1; | |
1718 | } | |
1719 | ||
1720 | for (tail = current_buffer->overlays_after; GC_CONSP (tail); | |
1721 | tail = XCONS (tail)->cdr) | |
1722 | { | |
1723 | int startpos; | |
1724 | ||
1725 | overlay = XCONS (tail)->car; | |
1726 | if (!GC_OVERLAYP (overlay)) | |
1727 | abort (); | |
1728 | ||
1729 | startpos = OVERLAY_POSITION (OVERLAY_START (overlay)); | |
1730 | if (pos < startpos) | |
1731 | break; | |
1732 | if (startpos == pos || OVERLAY_POSITION (OVERLAY_END (overlay)) == pos) | |
1733 | return 1; | |
1734 | } | |
1735 | return 0; | |
1736 | } | |
2eec3b4e | 1737 | \f |
5985d248 KH |
1738 | struct sortvec |
1739 | { | |
1740 | Lisp_Object overlay; | |
1741 | int beg, end; | |
1742 | int priority; | |
1743 | }; | |
1744 | ||
1745 | static int | |
1746 | compare_overlays (s1, s2) | |
1747 | struct sortvec *s1, *s2; | |
1748 | { | |
1749 | if (s1->priority != s2->priority) | |
1750 | return s1->priority - s2->priority; | |
1751 | if (s1->beg != s2->beg) | |
1752 | return s1->beg - s2->beg; | |
1753 | if (s1->end != s2->end) | |
1754 | return s2->end - s1->end; | |
1755 | return 0; | |
1756 | } | |
1757 | ||
1758 | /* Sort an array of overlays by priority. The array is modified in place. | |
1759 | The return value is the new size; this may be smaller than the original | |
1760 | size if some of the overlays were invalid or were window-specific. */ | |
1761 | int | |
1762 | sort_overlays (overlay_vec, noverlays, w) | |
1763 | Lisp_Object *overlay_vec; | |
1764 | int noverlays; | |
1765 | struct window *w; | |
1766 | { | |
1767 | int i, j; | |
1768 | struct sortvec *sortvec; | |
1769 | sortvec = (struct sortvec *) alloca (noverlays * sizeof (struct sortvec)); | |
1770 | ||
1771 | /* Put the valid and relevant overlays into sortvec. */ | |
1772 | ||
1773 | for (i = 0, j = 0; i < noverlays; i++) | |
1774 | { | |
0fa767e7 | 1775 | Lisp_Object tem; |
c99fc30f | 1776 | Lisp_Object overlay; |
5985d248 | 1777 | |
c99fc30f | 1778 | overlay = overlay_vec[i]; |
5985d248 KH |
1779 | if (OVERLAY_VALID (overlay) |
1780 | && OVERLAY_POSITION (OVERLAY_START (overlay)) > 0 | |
1781 | && OVERLAY_POSITION (OVERLAY_END (overlay)) > 0) | |
1782 | { | |
0fa767e7 KH |
1783 | /* If we're interested in a specific window, then ignore |
1784 | overlays that are limited to some other window. */ | |
1785 | if (w) | |
5985d248 | 1786 | { |
0fa767e7 KH |
1787 | Lisp_Object window; |
1788 | ||
1789 | window = Foverlay_get (overlay, Qwindow); | |
a7a60ce9 | 1790 | if (WINDOWP (window) && XWINDOW (window) != w) |
0fa767e7 | 1791 | continue; |
5985d248 | 1792 | } |
0fa767e7 KH |
1793 | |
1794 | /* This overlay is good and counts: put it into sortvec. */ | |
1795 | sortvec[j].overlay = overlay; | |
1796 | sortvec[j].beg = OVERLAY_POSITION (OVERLAY_START (overlay)); | |
1797 | sortvec[j].end = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
1798 | tem = Foverlay_get (overlay, Qpriority); | |
1799 | if (INTEGERP (tem)) | |
1800 | sortvec[j].priority = XINT (tem); | |
1801 | else | |
1802 | sortvec[j].priority = 0; | |
1803 | j++; | |
5985d248 KH |
1804 | } |
1805 | } | |
1806 | noverlays = j; | |
1807 | ||
1808 | /* Sort the overlays into the proper order: increasing priority. */ | |
1809 | ||
1810 | if (noverlays > 1) | |
1811 | qsort (sortvec, noverlays, sizeof (struct sortvec), compare_overlays); | |
1812 | ||
1813 | for (i = 0; i < noverlays; i++) | |
1814 | overlay_vec[i] = sortvec[i].overlay; | |
1815 | return (noverlays); | |
1816 | } | |
1817 | \f | |
bbbe9545 KH |
1818 | struct sortstr |
1819 | { | |
1820 | Lisp_Object string; | |
1821 | int size; | |
1822 | int priority; | |
1823 | }; | |
1824 | ||
1825 | /* A comparison function suitable for passing to qsort. */ | |
1826 | static int | |
1827 | cmp_for_strings (as1, as2) | |
1828 | char *as1, *as2; | |
1829 | { | |
1830 | struct sortstr *s1 = (struct sortstr *)as1; | |
1831 | struct sortstr *s2 = (struct sortstr *)as2; | |
1832 | if (s1->size != s2->size) | |
1833 | return s2->size - s1->size; | |
1834 | if (s1->priority != s2->priority) | |
1835 | return s1->priority - s2->priority; | |
1836 | return 0; | |
1837 | } | |
1838 | ||
1839 | /* Buffers for storing the overlays touching a given position. | |
1840 | These are expanded as needed, but never freed. */ | |
1841 | static struct sortstr *overlay_heads, *overlay_tails; | |
1842 | static char *overlay_str_buf; | |
1843 | ||
1844 | /* Allocated length of those buffers. */ | |
1845 | static int overlay_heads_len, overlay_tails_len, overlay_str_len; | |
1846 | ||
1847 | /* Return the concatenation of the strings associated with overlays that | |
1848 | begin or end at POS, ignoring overlays that are specific to a window | |
1849 | other than W. The strings are concatenated in the appropriate order: | |
1850 | shorter overlays nest inside longer ones, and higher priority inside | |
1851 | lower. Returns the string length, and stores the contents indirectly | |
1852 | through PSTR, if that variable is non-null. The string may be | |
1853 | overwritten by subsequent calls. */ | |
1854 | int | |
1855 | overlay_strings (pos, w, pstr) | |
1856 | int pos; | |
1857 | struct window *w; | |
1858 | char **pstr; | |
1859 | { | |
1860 | Lisp_Object ov, overlay, window, str, tem; | |
1861 | int ntail = 0, nhead = 0; | |
1862 | int total = 0; | |
1863 | int startpos, endpos; | |
1864 | ||
1865 | for (ov = current_buffer->overlays_before; CONSP (ov); ov = XCONS (ov)->cdr) | |
1866 | { | |
1867 | overlay = XCONS (ov)->car; | |
1868 | if (!OVERLAYP (overlay)) | |
1869 | abort (); | |
1870 | ||
1871 | startpos = OVERLAY_POSITION (OVERLAY_START (overlay)); | |
1872 | endpos = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
1873 | if (endpos < pos) | |
1874 | break; | |
1875 | if (endpos != pos && startpos != pos) | |
1876 | continue; | |
1877 | window = Foverlay_get (overlay, Qwindow); | |
1878 | if (WINDOWP (window) && XWINDOW (window) != w) | |
1879 | continue; | |
1880 | if (endpos == pos) | |
1881 | { | |
1882 | str = Foverlay_get (overlay, Qafter_string); | |
1883 | if (STRINGP (str)) | |
1884 | { | |
1885 | if (ntail == overlay_tails_len) | |
1886 | { | |
1887 | if (! overlay_tails) | |
1888 | { | |
1889 | overlay_tails_len = 5; | |
1890 | overlay_tails = ((struct sortstr *) | |
1891 | xmalloc (5 * sizeof (struct sortstr))); | |
1892 | } | |
1893 | else | |
1894 | { | |
1895 | overlay_tails_len *= 2; | |
1896 | overlay_tails = ((struct sortstr *) | |
1897 | xrealloc ((overlay_tails_len | |
1898 | * sizeof (struct sortstr)))); | |
1899 | } | |
1900 | } | |
1901 | overlay_tails[ntail].string = str; | |
1902 | overlay_tails[ntail].size = endpos - startpos; | |
1903 | tem = Foverlay_get (overlay, Qpriority); | |
1904 | overlay_tails[ntail].priority = (INTEGERP (tem) ? XINT (tem) : 0); | |
1905 | ntail++; | |
1906 | total += XSTRING (str)->size; | |
1907 | } | |
1908 | } | |
1909 | if (startpos == pos) | |
1910 | { | |
1911 | str = Foverlay_get (overlay, Qbefore_string); | |
1912 | if (STRINGP (str)) | |
1913 | { | |
1914 | if (nhead == overlay_heads_len) | |
1915 | { | |
1916 | if (! overlay_heads) | |
1917 | { | |
1918 | overlay_heads_len = 5; | |
1919 | overlay_heads = ((struct sortstr *) | |
1920 | xmalloc (5 * sizeof (struct sortstr))); | |
1921 | } | |
1922 | else | |
1923 | { | |
1924 | overlay_heads_len *= 2; | |
1925 | overlay_heads = ((struct sortstr *) | |
1926 | xrealloc ((overlay_heads_len | |
1927 | * sizeof (struct sortstr)))); | |
1928 | } | |
1929 | } | |
1930 | overlay_heads[nhead].string = str; | |
1931 | overlay_heads[nhead].size = endpos - startpos; | |
1932 | tem = Foverlay_get (overlay, Qpriority); | |
1933 | overlay_heads[nhead].priority = (INTEGERP (tem) ? XINT (tem) : 0); | |
1934 | nhead++; | |
1935 | total += XSTRING (str)->size; | |
1936 | } | |
1937 | } | |
1938 | } | |
1939 | for (ov = current_buffer->overlays_after; CONSP (ov); ov = XCONS (ov)->cdr) | |
1940 | { | |
1941 | overlay = XCONS (ov)->car; | |
1942 | if (!OVERLAYP (overlay)) | |
1943 | abort (); | |
1944 | ||
1945 | startpos = OVERLAY_POSITION (OVERLAY_START (overlay)); | |
1946 | endpos = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
1947 | if (startpos > pos) | |
1948 | break; | |
1949 | if (endpos == pos) | |
1950 | { | |
1951 | str = Foverlay_get (overlay, Qafter_string); | |
1952 | if (STRINGP (str)) | |
1953 | { | |
1954 | if (ntail == overlay_tails_len) | |
1955 | { | |
1956 | if (! overlay_tails) | |
1957 | { | |
1958 | overlay_tails_len = 5; | |
1959 | overlay_tails = ((struct sortstr *) | |
1960 | xmalloc (5 * sizeof (struct sortstr))); | |
1961 | } | |
1962 | else | |
1963 | { | |
1964 | overlay_tails_len *= 2; | |
1965 | overlay_tails = ((struct sortstr *) | |
1966 | xrealloc ((overlay_tails_len | |
1967 | * sizeof (struct sortstr)))); | |
1968 | } | |
1969 | } | |
1970 | overlay_tails[ntail].string = str; | |
1971 | overlay_tails[ntail].size = endpos - startpos; | |
1972 | tem = Foverlay_get (overlay, Qpriority); | |
1973 | overlay_tails[ntail].priority = (INTEGERP (tem) ? XINT (tem) : 0); | |
1974 | ntail++; | |
1975 | total += XSTRING (str)->size; | |
1976 | } | |
1977 | } | |
1978 | if (startpos == pos) | |
1979 | { | |
1980 | str = Foverlay_get (overlay, Qbefore_string); | |
1981 | if (STRINGP (str)) | |
1982 | { | |
1983 | if (nhead == overlay_heads_len) | |
1984 | { | |
1985 | if (! overlay_heads) | |
1986 | { | |
1987 | overlay_heads_len = 5; | |
1988 | overlay_heads = ((struct sortstr *) | |
1989 | xmalloc (5 * sizeof (struct sortstr))); | |
1990 | } | |
1991 | else | |
1992 | { | |
1993 | overlay_heads_len *= 2; | |
1994 | overlay_heads = ((struct sortstr *) | |
1995 | xrealloc ((overlay_heads_len | |
1996 | * sizeof (struct sortstr)))); | |
1997 | } | |
1998 | } | |
1999 | overlay_heads[nhead].string = str; | |
2000 | overlay_heads[nhead].size = endpos - startpos; | |
2001 | tem = Foverlay_get (overlay, Qpriority); | |
2002 | overlay_heads[nhead].priority = (INTEGERP (tem) ? XINT (tem) : 0); | |
2003 | nhead++; | |
2004 | total += XSTRING (str)->size; | |
2005 | } | |
2006 | } | |
2007 | } | |
2008 | if (ntail > 1) | |
2009 | qsort (overlay_tails, ntail, sizeof (struct sortstr), cmp_for_strings); | |
2010 | if (nhead > 1) | |
2011 | qsort (overlay_heads, nhead, sizeof (struct sortstr), cmp_for_strings); | |
2012 | if (total) | |
2013 | { | |
2014 | int i; | |
2015 | char *p; | |
2016 | ||
2017 | if (total > overlay_str_len) | |
2018 | { | |
2019 | if (! overlay_str_buf) | |
2020 | overlay_str_buf = (char *)xmalloc (total); | |
2021 | else | |
2022 | overlay_str_buf = (char *)xrealloc (overlay_str_buf, total); | |
2023 | overlay_str_len = total; | |
2024 | } | |
2025 | p = overlay_str_buf; | |
2026 | for (i = ntail; --i >= 0;) | |
2027 | { | |
2028 | tem = overlay_tails[i].string; | |
2029 | bcopy (XSTRING (tem)->data, p, XSTRING (tem)->size); | |
2030 | p += XSTRING (tem)->size; | |
2031 | } | |
2032 | for (i = 0; i < nhead; ++i) | |
2033 | { | |
2034 | tem = overlay_heads[i].string; | |
2035 | bcopy (XSTRING (tem)->data, p, XSTRING (tem)->size); | |
2036 | p += XSTRING (tem)->size; | |
2037 | } | |
2038 | if (pstr) | |
2039 | *pstr = overlay_str_buf; | |
2040 | } | |
2041 | return total; | |
2042 | } | |
2043 | \f | |
5c4f68f1 | 2044 | /* Shift overlays in BUF's overlay lists, to center the lists at POS. */ |
1ab256cb | 2045 | |
2eec3b4e | 2046 | void |
5c4f68f1 JB |
2047 | recenter_overlay_lists (buf, pos) |
2048 | struct buffer *buf; | |
2eec3b4e RS |
2049 | int pos; |
2050 | { | |
2051 | Lisp_Object overlay, tail, next, prev, beg, end; | |
2052 | ||
2053 | /* See if anything in overlays_before should move to overlays_after. */ | |
2054 | ||
2055 | /* We don't strictly need prev in this loop; it should always be nil. | |
2056 | But we use it for symmetry and in case that should cease to be true | |
2057 | with some future change. */ | |
2058 | prev = Qnil; | |
5c4f68f1 | 2059 | for (tail = buf->overlays_before; |
2eec3b4e RS |
2060 | CONSP (tail); |
2061 | prev = tail, tail = next) | |
1ab256cb | 2062 | { |
2eec3b4e RS |
2063 | next = XCONS (tail)->cdr; |
2064 | overlay = XCONS (tail)->car; | |
2065 | ||
2066 | /* If the overlay is not valid, get rid of it. */ | |
2067 | if (!OVERLAY_VALID (overlay)) | |
52f8ec73 JB |
2068 | #if 1 |
2069 | abort (); | |
2070 | #else | |
2eec3b4e RS |
2071 | { |
2072 | /* Splice the cons cell TAIL out of overlays_before. */ | |
2073 | if (!NILP (prev)) | |
2074 | XCONS (prev)->cdr = next; | |
2075 | else | |
5c4f68f1 | 2076 | buf->overlays_before = next; |
2eec3b4e RS |
2077 | tail = prev; |
2078 | continue; | |
2079 | } | |
52f8ec73 | 2080 | #endif |
1ab256cb | 2081 | |
2eec3b4e RS |
2082 | beg = OVERLAY_START (overlay); |
2083 | end = OVERLAY_END (overlay); | |
1ab256cb | 2084 | |
2eec3b4e | 2085 | if (OVERLAY_POSITION (end) > pos) |
1ab256cb | 2086 | { |
2eec3b4e RS |
2087 | /* OVERLAY needs to be moved. */ |
2088 | int where = OVERLAY_POSITION (beg); | |
2089 | Lisp_Object other, other_prev; | |
2090 | ||
2091 | /* Splice the cons cell TAIL out of overlays_before. */ | |
2092 | if (!NILP (prev)) | |
2093 | XCONS (prev)->cdr = next; | |
2094 | else | |
5c4f68f1 | 2095 | buf->overlays_before = next; |
2eec3b4e RS |
2096 | |
2097 | /* Search thru overlays_after for where to put it. */ | |
2098 | other_prev = Qnil; | |
5c4f68f1 | 2099 | for (other = buf->overlays_after; |
2eec3b4e RS |
2100 | CONSP (other); |
2101 | other_prev = other, other = XCONS (other)->cdr) | |
1ab256cb | 2102 | { |
2eec3b4e RS |
2103 | Lisp_Object otherbeg, otheroverlay, follower; |
2104 | int win; | |
2105 | ||
2106 | otheroverlay = XCONS (other)->car; | |
2107 | if (! OVERLAY_VALID (otheroverlay)) | |
52f8ec73 | 2108 | abort (); |
2eec3b4e RS |
2109 | |
2110 | otherbeg = OVERLAY_START (otheroverlay); | |
2111 | if (OVERLAY_POSITION (otherbeg) >= where) | |
2112 | break; | |
1ab256cb | 2113 | } |
2eec3b4e RS |
2114 | |
2115 | /* Add TAIL to overlays_after before OTHER. */ | |
2116 | XCONS (tail)->cdr = other; | |
2117 | if (!NILP (other_prev)) | |
2118 | XCONS (other_prev)->cdr = tail; | |
1ab256cb | 2119 | else |
5c4f68f1 | 2120 | buf->overlays_after = tail; |
2eec3b4e | 2121 | tail = prev; |
1ab256cb | 2122 | } |
2eec3b4e RS |
2123 | else |
2124 | /* We've reached the things that should stay in overlays_before. | |
2125 | All the rest of overlays_before must end even earlier, | |
2126 | so stop now. */ | |
2127 | break; | |
2128 | } | |
2129 | ||
2130 | /* See if anything in overlays_after should be in overlays_before. */ | |
2131 | prev = Qnil; | |
5c4f68f1 | 2132 | for (tail = buf->overlays_after; |
2eec3b4e RS |
2133 | CONSP (tail); |
2134 | prev = tail, tail = next) | |
2135 | { | |
2136 | next = XCONS (tail)->cdr; | |
2137 | overlay = XCONS (tail)->car; | |
2138 | ||
2139 | /* If the overlay is not valid, get rid of it. */ | |
2140 | if (!OVERLAY_VALID (overlay)) | |
52f8ec73 JB |
2141 | #if 1 |
2142 | abort (); | |
2143 | #else | |
2eec3b4e RS |
2144 | { |
2145 | /* Splice the cons cell TAIL out of overlays_after. */ | |
2146 | if (!NILP (prev)) | |
2147 | XCONS (prev)->cdr = next; | |
2148 | else | |
5c4f68f1 | 2149 | buf->overlays_after = next; |
2eec3b4e RS |
2150 | tail = prev; |
2151 | continue; | |
2152 | } | |
52f8ec73 | 2153 | #endif |
2eec3b4e RS |
2154 | |
2155 | beg = OVERLAY_START (overlay); | |
2156 | end = OVERLAY_END (overlay); | |
2157 | ||
2158 | /* Stop looking, when we know that nothing further | |
2159 | can possibly end before POS. */ | |
2160 | if (OVERLAY_POSITION (beg) > pos) | |
2161 | break; | |
2162 | ||
2163 | if (OVERLAY_POSITION (end) <= pos) | |
2164 | { | |
2165 | /* OVERLAY needs to be moved. */ | |
2166 | int where = OVERLAY_POSITION (end); | |
2167 | Lisp_Object other, other_prev; | |
2168 | ||
2169 | /* Splice the cons cell TAIL out of overlays_after. */ | |
2170 | if (!NILP (prev)) | |
2171 | XCONS (prev)->cdr = next; | |
2172 | else | |
5c4f68f1 | 2173 | buf->overlays_after = next; |
2eec3b4e RS |
2174 | |
2175 | /* Search thru overlays_before for where to put it. */ | |
2176 | other_prev = Qnil; | |
5c4f68f1 | 2177 | for (other = buf->overlays_before; |
2eec3b4e RS |
2178 | CONSP (other); |
2179 | other_prev = other, other = XCONS (other)->cdr) | |
2180 | { | |
2181 | Lisp_Object otherend, otheroverlay; | |
2182 | int win; | |
2183 | ||
2184 | otheroverlay = XCONS (other)->car; | |
2185 | if (! OVERLAY_VALID (otheroverlay)) | |
52f8ec73 | 2186 | abort (); |
2eec3b4e RS |
2187 | |
2188 | otherend = OVERLAY_END (otheroverlay); | |
2189 | if (OVERLAY_POSITION (otherend) <= where) | |
2190 | break; | |
2191 | } | |
2192 | ||
2193 | /* Add TAIL to overlays_before before OTHER. */ | |
2194 | XCONS (tail)->cdr = other; | |
2195 | if (!NILP (other_prev)) | |
2196 | XCONS (other_prev)->cdr = tail; | |
2197 | else | |
5c4f68f1 | 2198 | buf->overlays_before = tail; |
2eec3b4e RS |
2199 | tail = prev; |
2200 | } | |
2201 | } | |
2202 | ||
8d7a4592 | 2203 | XSETFASTINT (buf->overlay_center, pos); |
2eec3b4e | 2204 | } |
2b1bdf65 | 2205 | |
423cdb46 KH |
2206 | void |
2207 | adjust_overlays_for_insert (pos, length) | |
2208 | int pos; | |
2209 | int length; | |
2210 | { | |
2211 | /* After an insertion, the lists are still sorted properly, | |
2212 | but we may need to update the value of the overlay center. */ | |
2213 | if (XFASTINT (current_buffer->overlay_center) >= pos) | |
2214 | XSETFASTINT (current_buffer->overlay_center, | |
2215 | XFASTINT (current_buffer->overlay_center) + length); | |
2216 | } | |
2217 | ||
2218 | void | |
2219 | adjust_overlays_for_delete (pos, length) | |
2220 | int pos; | |
2221 | int length; | |
2222 | { | |
2223 | if (XFASTINT (current_buffer->overlay_center) < pos) | |
2224 | /* The deletion was to our right. No change needed; the before- and | |
2225 | after-lists are still consistent. */ | |
2226 | ; | |
2227 | else if (XFASTINT (current_buffer->overlay_center) > pos + length) | |
2228 | /* The deletion was to our left. We need to adjust the center value | |
2229 | to account for the change in position, but the lists are consistent | |
2230 | given the new value. */ | |
2231 | XSETFASTINT (current_buffer->overlay_center, | |
2232 | XFASTINT (current_buffer->overlay_center) - length); | |
2233 | else | |
2234 | /* We're right in the middle. There might be things on the after-list | |
2235 | that now belong on the before-list. Recentering will move them, | |
2236 | and also update the center point. */ | |
2237 | recenter_overlay_lists (current_buffer, pos); | |
2238 | } | |
2239 | ||
2b1bdf65 KH |
2240 | /* Fix up overlays that were garbled as a result of permuting markers |
2241 | in the range START through END. Any overlay with at least one | |
2242 | endpoint in this range will need to be unlinked from the overlay | |
2243 | list and reinserted in its proper place. | |
2244 | Such an overlay might even have negative size at this point. | |
2245 | If so, we'll reverse the endpoints. Can you think of anything | |
2246 | better to do in this situation? */ | |
2247 | void | |
2248 | fix_overlays_in_range (start, end) | |
2249 | register int start, end; | |
2250 | { | |
2251 | Lisp_Object tem, overlay; | |
2252 | Lisp_Object before_list, after_list; | |
2253 | Lisp_Object *ptail, *pbefore = &before_list, *pafter = &after_list; | |
2254 | int startpos, endpos; | |
2255 | ||
2256 | /* This algorithm shifts links around instead of consing and GCing. | |
2257 | The loop invariant is that before_list (resp. after_list) is a | |
2258 | well-formed list except that its last element, the one that | |
2259 | *pbefore (resp. *pafter) points to, is still uninitialized. | |
2260 | So it's not a bug that before_list isn't initialized, although | |
2261 | it may look strange. */ | |
2262 | for (ptail = ¤t_buffer->overlays_before; CONSP (*ptail);) | |
2263 | { | |
2264 | overlay = XCONS (*ptail)->car; | |
2265 | endpos = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
2266 | if (endpos < start) | |
2267 | break; | |
2268 | startpos = OVERLAY_POSITION (OVERLAY_START (overlay)); | |
2269 | if (endpos < end | |
2270 | || (startpos >= start && startpos < end)) | |
2271 | { | |
2272 | /* If the overlay is backwards, fix that now. */ | |
2273 | if (startpos > endpos) | |
2274 | { | |
2275 | int tem; | |
2276 | Fset_marker (OVERLAY_START (overlay), endpos, Qnil); | |
2277 | Fset_marker (OVERLAY_END (overlay), startpos, Qnil); | |
2278 | tem = startpos; startpos = endpos; endpos = tem; | |
2279 | } | |
2280 | /* Add it to the end of the wrong list. Later on, | |
2281 | recenter_overlay_lists will move it to the right place. */ | |
2282 | if (endpos < XINT (current_buffer->overlay_center)) | |
2283 | { | |
2284 | *pafter = *ptail; | |
2285 | pafter = &XCONS (*ptail)->cdr; | |
2286 | } | |
2287 | else | |
2288 | { | |
2289 | *pbefore = *ptail; | |
2290 | pbefore = &XCONS (*ptail)->cdr; | |
2291 | } | |
2292 | *ptail = XCONS (*ptail)->cdr; | |
2293 | } | |
2294 | else | |
2295 | ptail = &XCONS (*ptail)->cdr; | |
2296 | } | |
2297 | for (ptail = ¤t_buffer->overlays_after; CONSP (*ptail);) | |
2298 | { | |
2299 | overlay = XCONS (*ptail)->car; | |
2300 | startpos = OVERLAY_POSITION (OVERLAY_START (overlay)); | |
2301 | if (startpos >= end) | |
2302 | break; | |
2303 | endpos = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
2304 | if (startpos >= start | |
2305 | || (endpos >= start && endpos < end)) | |
2306 | { | |
2307 | if (startpos > endpos) | |
2308 | { | |
2309 | int tem; | |
2310 | Fset_marker (OVERLAY_START (overlay), endpos, Qnil); | |
2311 | Fset_marker (OVERLAY_END (overlay), startpos, Qnil); | |
2312 | tem = startpos; startpos = endpos; endpos = tem; | |
2313 | } | |
2314 | if (endpos < XINT (current_buffer->overlay_center)) | |
2315 | { | |
2316 | *pafter = *ptail; | |
2317 | pafter = &XCONS (*ptail)->cdr; | |
2318 | } | |
2319 | else | |
2320 | { | |
2321 | *pbefore = *ptail; | |
2322 | pbefore = &XCONS (*ptail)->cdr; | |
2323 | } | |
2324 | *ptail = XCONS (*ptail)->cdr; | |
2325 | } | |
2326 | else | |
2327 | ptail = &XCONS (*ptail)->cdr; | |
2328 | } | |
2329 | ||
2330 | /* Splice the constructed (wrong) lists into the buffer's lists, | |
2331 | and let the recenter function make it sane again. */ | |
2332 | *pbefore = current_buffer->overlays_before; | |
2333 | current_buffer->overlays_before = before_list; | |
2334 | recenter_overlay_lists (current_buffer, | |
2335 | XINT (current_buffer->overlay_center)); | |
2336 | ||
2337 | *pafter = current_buffer->overlays_after; | |
2338 | current_buffer->overlays_after = after_list; | |
2339 | recenter_overlay_lists (current_buffer, | |
2340 | XINT (current_buffer->overlay_center)); | |
2341 | } | |
2eec3b4e | 2342 | \f |
52f8ec73 JB |
2343 | DEFUN ("overlayp", Foverlayp, Soverlayp, 1, 1, 0, |
2344 | "Return t if OBJECT is an overlay.") | |
2345 | (object) | |
2346 | Lisp_Object object; | |
2347 | { | |
2348 | return (OVERLAYP (object) ? Qt : Qnil); | |
2349 | } | |
2350 | ||
5c4f68f1 JB |
2351 | DEFUN ("make-overlay", Fmake_overlay, Smake_overlay, 2, 3, 0, |
2352 | "Create a new overlay with range BEG to END in BUFFER.\n\ | |
2353 | If omitted, BUFFER defaults to the current buffer.\n\ | |
2eec3b4e | 2354 | BEG and END may be integers or markers.") |
5c4f68f1 JB |
2355 | (beg, end, buffer) |
2356 | Lisp_Object beg, end, buffer; | |
2eec3b4e RS |
2357 | { |
2358 | Lisp_Object overlay; | |
5c4f68f1 | 2359 | struct buffer *b; |
2eec3b4e | 2360 | |
5c4f68f1 | 2361 | if (NILP (buffer)) |
67180c6a | 2362 | XSETBUFFER (buffer, current_buffer); |
883047b9 JB |
2363 | else |
2364 | CHECK_BUFFER (buffer, 2); | |
2365 | if (MARKERP (beg) | |
2366 | && ! EQ (Fmarker_buffer (beg), buffer)) | |
2367 | error ("Marker points into wrong buffer"); | |
2368 | if (MARKERP (end) | |
2369 | && ! EQ (Fmarker_buffer (end), buffer)) | |
2370 | error ("Marker points into wrong buffer"); | |
2eec3b4e | 2371 | |
883047b9 JB |
2372 | CHECK_NUMBER_COERCE_MARKER (beg, 1); |
2373 | CHECK_NUMBER_COERCE_MARKER (end, 1); | |
5c4f68f1 | 2374 | |
883047b9 | 2375 | if (XINT (beg) > XINT (end)) |
5c4f68f1 | 2376 | { |
c99fc30f KH |
2377 | Lisp_Object temp; |
2378 | temp = beg; beg = end; end = temp; | |
5c4f68f1 | 2379 | } |
883047b9 JB |
2380 | |
2381 | b = XBUFFER (buffer); | |
2382 | ||
2383 | beg = Fset_marker (Fmake_marker (), beg, buffer); | |
2384 | end = Fset_marker (Fmake_marker (), end, buffer); | |
5c4f68f1 | 2385 | |
48e2e3ba | 2386 | overlay = allocate_misc (); |
89ca3e1b | 2387 | XMISCTYPE (overlay) = Lisp_Misc_Overlay; |
48e2e3ba KH |
2388 | XOVERLAY (overlay)->start = beg; |
2389 | XOVERLAY (overlay)->end = end; | |
2390 | XOVERLAY (overlay)->plist = Qnil; | |
2eec3b4e RS |
2391 | |
2392 | /* Put the new overlay on the wrong list. */ | |
2393 | end = OVERLAY_END (overlay); | |
5c4f68f1 JB |
2394 | if (OVERLAY_POSITION (end) < XINT (b->overlay_center)) |
2395 | b->overlays_after = Fcons (overlay, b->overlays_after); | |
2eec3b4e | 2396 | else |
5c4f68f1 | 2397 | b->overlays_before = Fcons (overlay, b->overlays_before); |
2eec3b4e RS |
2398 | |
2399 | /* This puts it in the right list, and in the right order. */ | |
5c4f68f1 | 2400 | recenter_overlay_lists (b, XINT (b->overlay_center)); |
2eec3b4e | 2401 | |
b61982dd JB |
2402 | /* We don't need to redisplay the region covered by the overlay, because |
2403 | the overlay has no properties at the moment. */ | |
2404 | ||
2eec3b4e RS |
2405 | return overlay; |
2406 | } | |
2407 | ||
5c4f68f1 JB |
2408 | DEFUN ("move-overlay", Fmove_overlay, Smove_overlay, 3, 4, 0, |
2409 | "Set the endpoints of OVERLAY to BEG and END in BUFFER.\n\ | |
3ece337a JB |
2410 | If BUFFER is omitted, leave OVERLAY in the same buffer it inhabits now.\n\ |
2411 | If BUFFER is omitted, and OVERLAY is in no buffer, put it in the current\n\ | |
2412 | buffer.") | |
5c4f68f1 JB |
2413 | (overlay, beg, end, buffer) |
2414 | Lisp_Object overlay, beg, end, buffer; | |
2eec3b4e | 2415 | { |
0a4469c9 RS |
2416 | struct buffer *b, *ob; |
2417 | Lisp_Object obuffer; | |
2418 | int count = specpdl_ptr - specpdl; | |
5c4f68f1 | 2419 | |
52f8ec73 | 2420 | CHECK_OVERLAY (overlay, 0); |
5c4f68f1 JB |
2421 | if (NILP (buffer)) |
2422 | buffer = Fmarker_buffer (OVERLAY_START (overlay)); | |
3ece337a | 2423 | if (NILP (buffer)) |
67180c6a | 2424 | XSETBUFFER (buffer, current_buffer); |
5c4f68f1 | 2425 | CHECK_BUFFER (buffer, 3); |
883047b9 JB |
2426 | |
2427 | if (MARKERP (beg) | |
2428 | && ! EQ (Fmarker_buffer (beg), buffer)) | |
2429 | error ("Marker points into wrong buffer"); | |
2430 | if (MARKERP (end) | |
2431 | && ! EQ (Fmarker_buffer (end), buffer)) | |
2432 | error ("Marker points into wrong buffer"); | |
2433 | ||
b61982dd JB |
2434 | CHECK_NUMBER_COERCE_MARKER (beg, 1); |
2435 | CHECK_NUMBER_COERCE_MARKER (end, 1); | |
2436 | ||
9d7608b7 KH |
2437 | if (XINT (beg) == XINT (end) && ! NILP (Foverlay_get (overlay, Qevaporate))) |
2438 | return Fdelete_overlay (overlay); | |
0a4469c9 | 2439 | |
b61982dd JB |
2440 | if (XINT (beg) > XINT (end)) |
2441 | { | |
c99fc30f KH |
2442 | Lisp_Object temp; |
2443 | temp = beg; beg = end; end = temp; | |
b61982dd JB |
2444 | } |
2445 | ||
9d7608b7 KH |
2446 | specbind (Qinhibit_quit, Qt); |
2447 | ||
0a4469c9 | 2448 | obuffer = Fmarker_buffer (OVERLAY_START (overlay)); |
5c4f68f1 | 2449 | b = XBUFFER (buffer); |
0a4469c9 | 2450 | ob = XBUFFER (obuffer); |
2eec3b4e | 2451 | |
c82ed728 | 2452 | /* If the overlay has changed buffers, do a thorough redisplay. */ |
0a4469c9 | 2453 | if (!EQ (buffer, obuffer)) |
50760c4a RS |
2454 | { |
2455 | /* Redisplay where the overlay was. */ | |
2456 | if (!NILP (obuffer)) | |
2457 | { | |
2458 | Lisp_Object o_beg; | |
2459 | Lisp_Object o_end; | |
2460 | ||
2461 | o_beg = OVERLAY_START (overlay); | |
2462 | o_end = OVERLAY_END (overlay); | |
2463 | o_beg = OVERLAY_POSITION (o_beg); | |
2464 | o_end = OVERLAY_POSITION (o_end); | |
2465 | ||
efd90478 | 2466 | redisplay_region (ob, XINT (o_beg), XINT (o_end)); |
50760c4a RS |
2467 | } |
2468 | ||
2469 | /* Redisplay where the overlay is going to be. */ | |
efd90478 | 2470 | redisplay_region (b, XINT (beg), XINT (end)); |
50760c4a | 2471 | } |
c82ed728 JB |
2472 | else |
2473 | /* Redisplay the area the overlay has just left, or just enclosed. */ | |
2474 | { | |
be8b1c6b RS |
2475 | Lisp_Object o_beg; |
2476 | Lisp_Object o_end; | |
c82ed728 JB |
2477 | int change_beg, change_end; |
2478 | ||
be8b1c6b RS |
2479 | o_beg = OVERLAY_START (overlay); |
2480 | o_end = OVERLAY_END (overlay); | |
c82ed728 JB |
2481 | o_beg = OVERLAY_POSITION (o_beg); |
2482 | o_end = OVERLAY_POSITION (o_end); | |
2483 | ||
2484 | if (XINT (o_beg) == XINT (beg)) | |
2485 | redisplay_region (b, XINT (o_end), XINT (end)); | |
2486 | else if (XINT (o_end) == XINT (end)) | |
2487 | redisplay_region (b, XINT (o_beg), XINT (beg)); | |
2488 | else | |
2489 | { | |
2490 | if (XINT (beg) < XINT (o_beg)) o_beg = beg; | |
2491 | if (XINT (end) > XINT (o_end)) o_end = end; | |
2492 | redisplay_region (b, XINT (o_beg), XINT (o_end)); | |
2493 | } | |
2494 | } | |
b61982dd | 2495 | |
0a4469c9 RS |
2496 | if (!NILP (obuffer)) |
2497 | { | |
2498 | ob->overlays_before = Fdelq (overlay, ob->overlays_before); | |
2499 | ob->overlays_after = Fdelq (overlay, ob->overlays_after); | |
2500 | } | |
5c4f68f1 JB |
2501 | |
2502 | Fset_marker (OVERLAY_START (overlay), beg, buffer); | |
2503 | Fset_marker (OVERLAY_END (overlay), end, buffer); | |
2eec3b4e RS |
2504 | |
2505 | /* Put the overlay on the wrong list. */ | |
2506 | end = OVERLAY_END (overlay); | |
5c4f68f1 JB |
2507 | if (OVERLAY_POSITION (end) < XINT (b->overlay_center)) |
2508 | b->overlays_after = Fcons (overlay, b->overlays_after); | |
2eec3b4e | 2509 | else |
5c4f68f1 | 2510 | b->overlays_before = Fcons (overlay, b->overlays_before); |
2eec3b4e RS |
2511 | |
2512 | /* This puts it in the right list, and in the right order. */ | |
5c4f68f1 | 2513 | recenter_overlay_lists (b, XINT (b->overlay_center)); |
2eec3b4e | 2514 | |
0a4469c9 | 2515 | return unbind_to (count, overlay); |
2eec3b4e RS |
2516 | } |
2517 | ||
2518 | DEFUN ("delete-overlay", Fdelete_overlay, Sdelete_overlay, 1, 1, 0, | |
5c4f68f1 | 2519 | "Delete the overlay OVERLAY from its buffer.") |
2eec3b4e | 2520 | (overlay) |
5c4f68f1 | 2521 | Lisp_Object overlay; |
2eec3b4e | 2522 | { |
0a4469c9 | 2523 | Lisp_Object buffer; |
5c4f68f1 | 2524 | struct buffer *b; |
0a4469c9 | 2525 | int count = specpdl_ptr - specpdl; |
5c4f68f1 | 2526 | |
52f8ec73 JB |
2527 | CHECK_OVERLAY (overlay, 0); |
2528 | ||
0a4469c9 RS |
2529 | buffer = Fmarker_buffer (OVERLAY_START (overlay)); |
2530 | if (NILP (buffer)) | |
2531 | return Qnil; | |
2532 | ||
2533 | b = XBUFFER (buffer); | |
2534 | ||
2535 | specbind (Qinhibit_quit, Qt); | |
5c4f68f1 JB |
2536 | |
2537 | b->overlays_before = Fdelq (overlay, b->overlays_before); | |
2538 | b->overlays_after = Fdelq (overlay, b->overlays_after); | |
2539 | ||
b61982dd | 2540 | redisplay_region (b, |
a927f5c9 RS |
2541 | marker_position (OVERLAY_START (overlay)), |
2542 | marker_position (OVERLAY_END (overlay))); | |
b61982dd | 2543 | |
3ece337a JB |
2544 | Fset_marker (OVERLAY_START (overlay), Qnil, Qnil); |
2545 | Fset_marker (OVERLAY_END (overlay), Qnil, Qnil); | |
2546 | ||
0a4469c9 | 2547 | return unbind_to (count, Qnil); |
2eec3b4e RS |
2548 | } |
2549 | \f | |
8ebafa8d JB |
2550 | /* Overlay dissection functions. */ |
2551 | ||
2552 | DEFUN ("overlay-start", Foverlay_start, Soverlay_start, 1, 1, 0, | |
2553 | "Return the position at which OVERLAY starts.") | |
2554 | (overlay) | |
2555 | Lisp_Object overlay; | |
2556 | { | |
2557 | CHECK_OVERLAY (overlay, 0); | |
2558 | ||
2559 | return (Fmarker_position (OVERLAY_START (overlay))); | |
2560 | } | |
2561 | ||
2562 | DEFUN ("overlay-end", Foverlay_end, Soverlay_end, 1, 1, 0, | |
2563 | "Return the position at which OVERLAY ends.") | |
2564 | (overlay) | |
2565 | Lisp_Object overlay; | |
2566 | { | |
2567 | CHECK_OVERLAY (overlay, 0); | |
2568 | ||
2569 | return (Fmarker_position (OVERLAY_END (overlay))); | |
2570 | } | |
2571 | ||
2572 | DEFUN ("overlay-buffer", Foverlay_buffer, Soverlay_buffer, 1, 1, 0, | |
2573 | "Return the buffer OVERLAY belongs to.") | |
2574 | (overlay) | |
2575 | Lisp_Object overlay; | |
2576 | { | |
2577 | CHECK_OVERLAY (overlay, 0); | |
2578 | ||
2579 | return Fmarker_buffer (OVERLAY_START (overlay)); | |
2580 | } | |
2581 | ||
2582 | DEFUN ("overlay-properties", Foverlay_properties, Soverlay_properties, 1, 1, 0, | |
2583 | "Return a list of the properties on OVERLAY.\n\ | |
2584 | This is a copy of OVERLAY's plist; modifying its conses has no effect on\n\ | |
2585 | OVERLAY.") | |
2586 | (overlay) | |
2587 | Lisp_Object overlay; | |
2588 | { | |
2589 | CHECK_OVERLAY (overlay, 0); | |
2590 | ||
48e2e3ba | 2591 | return Fcopy_sequence (XOVERLAY (overlay)->plist); |
8ebafa8d JB |
2592 | } |
2593 | ||
2594 | \f | |
2eec3b4e | 2595 | DEFUN ("overlays-at", Foverlays_at, Soverlays_at, 1, 1, 0, |
eb8c3be9 | 2596 | "Return a list of the overlays that contain position POS.") |
2eec3b4e RS |
2597 | (pos) |
2598 | Lisp_Object pos; | |
2599 | { | |
2600 | int noverlays; | |
2eec3b4e RS |
2601 | Lisp_Object *overlay_vec; |
2602 | int len; | |
2603 | Lisp_Object result; | |
2604 | ||
2605 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
2606 | ||
2607 | len = 10; | |
2608 | overlay_vec = (Lisp_Object *) xmalloc (len * sizeof (Lisp_Object)); | |
2609 | ||
2610 | /* Put all the overlays we want in a vector in overlay_vec. | |
2611 | Store the length in len. */ | |
2a77a7d7 RS |
2612 | noverlays = overlays_at (XINT (pos), 1, &overlay_vec, &len, |
2613 | (int *) 0, (int *) 0); | |
2eec3b4e RS |
2614 | |
2615 | /* Make a list of them all. */ | |
2616 | result = Flist (noverlays, overlay_vec); | |
2617 | ||
9ac0d9e0 | 2618 | xfree (overlay_vec); |
2eec3b4e RS |
2619 | return result; |
2620 | } | |
2621 | ||
2622 | DEFUN ("next-overlay-change", Fnext_overlay_change, Snext_overlay_change, | |
2623 | 1, 1, 0, | |
bbe20e81 KH |
2624 | "Return the next position after POS where an overlay starts or ends.\n\ |
2625 | If there are no more overlay boundaries after POS, return (point-max).") | |
2eec3b4e RS |
2626 | (pos) |
2627 | Lisp_Object pos; | |
2628 | { | |
2629 | int noverlays; | |
2630 | int endpos; | |
2631 | Lisp_Object *overlay_vec; | |
2632 | int len; | |
2eec3b4e RS |
2633 | int i; |
2634 | ||
2635 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
2636 | ||
2637 | len = 10; | |
2638 | overlay_vec = (Lisp_Object *) xmalloc (len * sizeof (Lisp_Object)); | |
2639 | ||
2640 | /* Put all the overlays we want in a vector in overlay_vec. | |
2641 | Store the length in len. | |
2642 | endpos gets the position where the next overlay starts. */ | |
2a77a7d7 RS |
2643 | noverlays = overlays_at (XINT (pos), 1, &overlay_vec, &len, |
2644 | &endpos, (int *) 0); | |
2eec3b4e RS |
2645 | |
2646 | /* If any of these overlays ends before endpos, | |
2647 | use its ending point instead. */ | |
2648 | for (i = 0; i < noverlays; i++) | |
2649 | { | |
2650 | Lisp_Object oend; | |
2651 | int oendpos; | |
2652 | ||
2653 | oend = OVERLAY_END (overlay_vec[i]); | |
2654 | oendpos = OVERLAY_POSITION (oend); | |
2655 | if (oendpos < endpos) | |
2656 | endpos = oendpos; | |
1ab256cb RM |
2657 | } |
2658 | ||
9ac0d9e0 | 2659 | xfree (overlay_vec); |
2eec3b4e RS |
2660 | return make_number (endpos); |
2661 | } | |
239c932b RS |
2662 | |
2663 | DEFUN ("previous-overlay-change", Fprevious_overlay_change, | |
2664 | Sprevious_overlay_change, 1, 1, 0, | |
2665 | "Return the previous position before POS where an overlay starts or ends.\n\ | |
624bbdc4 | 2666 | If there are no more overlay boundaries before POS, return (point-min).") |
239c932b RS |
2667 | (pos) |
2668 | Lisp_Object pos; | |
2669 | { | |
2670 | int noverlays; | |
2671 | int prevpos; | |
2672 | Lisp_Object *overlay_vec; | |
2673 | int len; | |
2674 | int i; | |
624bbdc4 | 2675 | Lisp_Object tail; |
239c932b RS |
2676 | |
2677 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
2678 | ||
2679 | len = 10; | |
2680 | overlay_vec = (Lisp_Object *) xmalloc (len * sizeof (Lisp_Object)); | |
2681 | ||
624bbdc4 RS |
2682 | /* At beginning of buffer, we know the answer; |
2683 | avoid bug subtracting 1 below. */ | |
2684 | if (XINT (pos) == BEGV) | |
2685 | return pos; | |
2686 | ||
239c932b RS |
2687 | /* Put all the overlays we want in a vector in overlay_vec. |
2688 | Store the length in len. | |
2689 | prevpos gets the position of an overlay end. */ | |
2a77a7d7 RS |
2690 | noverlays = overlays_at (XINT (pos), 1, &overlay_vec, &len, |
2691 | (int *) 0, &prevpos); | |
239c932b | 2692 | |
624bbdc4 | 2693 | /* If any of these overlays starts after prevpos, |
239c932b RS |
2694 | maybe use its starting point instead. */ |
2695 | for (i = 0; i < noverlays; i++) | |
2696 | { | |
2697 | Lisp_Object ostart; | |
2698 | int ostartpos; | |
2699 | ||
2700 | ostart = OVERLAY_START (overlay_vec[i]); | |
2701 | ostartpos = OVERLAY_POSITION (ostart); | |
2702 | if (ostartpos > prevpos && ostartpos < XINT (pos)) | |
2703 | prevpos = ostartpos; | |
2704 | } | |
2705 | ||
624bbdc4 RS |
2706 | /* If any overlay ends at pos, consider its starting point too. */ |
2707 | for (tail = current_buffer->overlays_before; | |
2708 | GC_CONSP (tail); | |
2709 | tail = XCONS (tail)->cdr) | |
2710 | { | |
2711 | Lisp_Object overlay, ostart; | |
2712 | int ostartpos; | |
2713 | ||
2714 | overlay = XCONS (tail)->car; | |
2715 | ||
2716 | ostart = OVERLAY_START (overlay); | |
2717 | ostartpos = OVERLAY_POSITION (ostart); | |
2718 | if (ostartpos > prevpos && ostartpos < XINT (pos)) | |
2719 | prevpos = ostartpos; | |
2720 | } | |
2721 | ||
239c932b RS |
2722 | xfree (overlay_vec); |
2723 | return make_number (prevpos); | |
2724 | } | |
2eec3b4e RS |
2725 | \f |
2726 | /* These functions are for debugging overlays. */ | |
2727 | ||
2728 | DEFUN ("overlay-lists", Foverlay_lists, Soverlay_lists, 0, 0, 0, | |
2729 | "Return a pair of lists giving all the overlays of the current buffer.\n\ | |
2730 | The car has all the overlays before the overlay center;\n\ | |
bbe20e81 | 2731 | the cdr has all the overlays after the overlay center.\n\ |
2eec3b4e RS |
2732 | Recentering overlays moves overlays between these lists.\n\ |
2733 | The lists you get are copies, so that changing them has no effect.\n\ | |
2734 | However, the overlays you get are the real objects that the buffer uses.") | |
2735 | () | |
2736 | { | |
2737 | Lisp_Object before, after; | |
2738 | before = current_buffer->overlays_before; | |
2739 | if (CONSP (before)) | |
2740 | before = Fcopy_sequence (before); | |
2741 | after = current_buffer->overlays_after; | |
2742 | if (CONSP (after)) | |
2743 | after = Fcopy_sequence (after); | |
2744 | ||
2745 | return Fcons (before, after); | |
2746 | } | |
2747 | ||
2748 | DEFUN ("overlay-recenter", Foverlay_recenter, Soverlay_recenter, 1, 1, 0, | |
2749 | "Recenter the overlays of the current buffer around position POS.") | |
2750 | (pos) | |
2751 | Lisp_Object pos; | |
2752 | { | |
2753 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
2754 | ||
5c4f68f1 | 2755 | recenter_overlay_lists (current_buffer, XINT (pos)); |
2eec3b4e RS |
2756 | return Qnil; |
2757 | } | |
2758 | \f | |
2759 | DEFUN ("overlay-get", Foverlay_get, Soverlay_get, 2, 2, 0, | |
2760 | "Get the property of overlay OVERLAY with property name NAME.") | |
2761 | (overlay, prop) | |
2762 | Lisp_Object overlay, prop; | |
2763 | { | |
cab4777e | 2764 | Lisp_Object plist, fallback; |
52f8ec73 JB |
2765 | |
2766 | CHECK_OVERLAY (overlay, 0); | |
2767 | ||
cab4777e RS |
2768 | fallback = Qnil; |
2769 | ||
48e2e3ba | 2770 | for (plist = XOVERLAY (overlay)->plist; |
2eec3b4e RS |
2771 | CONSP (plist) && CONSP (XCONS (plist)->cdr); |
2772 | plist = XCONS (XCONS (plist)->cdr)->cdr) | |
2773 | { | |
2774 | if (EQ (XCONS (plist)->car, prop)) | |
2775 | return XCONS (XCONS (plist)->cdr)->car; | |
cab4777e RS |
2776 | else if (EQ (XCONS (plist)->car, Qcategory)) |
2777 | { | |
2778 | Lisp_Object tem; | |
2779 | tem = Fcar (Fcdr (plist)); | |
2780 | if (SYMBOLP (tem)) | |
2781 | fallback = Fget (tem, prop); | |
2782 | } | |
2eec3b4e | 2783 | } |
52f8ec73 | 2784 | |
cab4777e | 2785 | return fallback; |
2eec3b4e RS |
2786 | } |
2787 | ||
2788 | DEFUN ("overlay-put", Foverlay_put, Soverlay_put, 3, 3, 0, | |
2789 | "Set one property of overlay OVERLAY: give property PROP value VALUE.") | |
2790 | (overlay, prop, value) | |
2791 | Lisp_Object overlay, prop, value; | |
2792 | { | |
48e2e3ba | 2793 | Lisp_Object tail, buffer; |
9d7608b7 | 2794 | int changed; |
2eec3b4e | 2795 | |
52f8ec73 | 2796 | CHECK_OVERLAY (overlay, 0); |
b61982dd | 2797 | |
274a9425 RS |
2798 | buffer = Fmarker_buffer (OVERLAY_START (overlay)); |
2799 | ||
48e2e3ba | 2800 | for (tail = XOVERLAY (overlay)->plist; |
2eec3b4e RS |
2801 | CONSP (tail) && CONSP (XCONS (tail)->cdr); |
2802 | tail = XCONS (XCONS (tail)->cdr)->cdr) | |
274a9425 RS |
2803 | if (EQ (XCONS (tail)->car, prop)) |
2804 | { | |
9d7608b7 KH |
2805 | changed = !EQ (XCONS (XCONS (tail)->cdr)->car, value); |
2806 | XCONS (XCONS (tail)->cdr)->car = value; | |
2807 | goto found; | |
274a9425 | 2808 | } |
9d7608b7 KH |
2809 | /* It wasn't in the list, so add it to the front. */ |
2810 | changed = !NILP (value); | |
48e2e3ba KH |
2811 | XOVERLAY (overlay)->plist |
2812 | = Fcons (prop, Fcons (value, XOVERLAY (overlay)->plist)); | |
9d7608b7 KH |
2813 | found: |
2814 | if (! NILP (buffer)) | |
2815 | { | |
2816 | if (changed) | |
2817 | redisplay_region (XBUFFER (buffer), | |
2818 | marker_position (OVERLAY_START (overlay)), | |
2819 | marker_position (OVERLAY_END (overlay))); | |
2820 | if (EQ (prop, Qevaporate) && ! NILP (value) | |
2821 | && (OVERLAY_POSITION (OVERLAY_START (overlay)) | |
2822 | == OVERLAY_POSITION (OVERLAY_END (overlay)))) | |
2823 | Fdelete_overlay (overlay); | |
2824 | } | |
2eec3b4e | 2825 | return value; |
1ab256cb RM |
2826 | } |
2827 | \f | |
173f2a64 RS |
2828 | /* Run the modification-hooks of overlays that include |
2829 | any part of the text in START to END. | |
2830 | Run the insert-before-hooks of overlay starting at END, | |
930a9140 RS |
2831 | and the insert-after-hooks of overlay ending at START. |
2832 | ||
2833 | This is called both before and after the modification. | |
2834 | AFTER is nonzero when we call after the modification. | |
2835 | ||
2836 | ARG1, ARG2, ARG3 are arguments to pass to the hook functions. */ | |
173f2a64 RS |
2837 | |
2838 | void | |
930a9140 | 2839 | report_overlay_modification (start, end, after, arg1, arg2, arg3) |
173f2a64 | 2840 | Lisp_Object start, end; |
930a9140 RS |
2841 | int after; |
2842 | Lisp_Object arg1, arg2, arg3; | |
173f2a64 RS |
2843 | { |
2844 | Lisp_Object prop, overlay, tail; | |
2845 | int insertion = EQ (start, end); | |
55b48893 | 2846 | int tail_copied; |
930a9140 | 2847 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
55b48893 RS |
2848 | |
2849 | overlay = Qnil; | |
2850 | tail = Qnil; | |
930a9140 | 2851 | GCPRO5 (overlay, tail, arg1, arg2, arg3); |
173f2a64 | 2852 | |
55b48893 | 2853 | tail_copied = 0; |
173f2a64 RS |
2854 | for (tail = current_buffer->overlays_before; |
2855 | CONSP (tail); | |
2856 | tail = XCONS (tail)->cdr) | |
2857 | { | |
2858 | int startpos, endpos; | |
be8b1c6b | 2859 | Lisp_Object ostart, oend; |
173f2a64 RS |
2860 | |
2861 | overlay = XCONS (tail)->car; | |
2862 | ||
2863 | ostart = OVERLAY_START (overlay); | |
2864 | oend = OVERLAY_END (overlay); | |
2865 | endpos = OVERLAY_POSITION (oend); | |
2866 | if (XFASTINT (start) > endpos) | |
2867 | break; | |
2868 | startpos = OVERLAY_POSITION (ostart); | |
2869 | if (XFASTINT (end) == startpos && insertion) | |
2870 | { | |
2871 | prop = Foverlay_get (overlay, Qinsert_in_front_hooks); | |
5fb5aa33 RS |
2872 | if (!NILP (prop)) |
2873 | { | |
2874 | /* Copy TAIL in case the hook recenters the overlay lists. */ | |
55b48893 RS |
2875 | if (!tail_copied) |
2876 | tail = Fcopy_sequence (tail); | |
2877 | tail_copied = 1; | |
930a9140 | 2878 | call_overlay_mod_hooks (prop, overlay, after, arg1, arg2, arg3); |
5fb5aa33 | 2879 | } |
173f2a64 RS |
2880 | } |
2881 | if (XFASTINT (start) == endpos && insertion) | |
2882 | { | |
2883 | prop = Foverlay_get (overlay, Qinsert_behind_hooks); | |
5fb5aa33 RS |
2884 | if (!NILP (prop)) |
2885 | { | |
55b48893 RS |
2886 | if (!tail_copied) |
2887 | tail = Fcopy_sequence (tail); | |
2888 | tail_copied = 1; | |
930a9140 | 2889 | call_overlay_mod_hooks (prop, overlay, after, arg1, arg2, arg3); |
5fb5aa33 | 2890 | } |
173f2a64 | 2891 | } |
3bd13e92 KH |
2892 | /* Test for intersecting intervals. This does the right thing |
2893 | for both insertion and deletion. */ | |
2894 | if (XFASTINT (end) > startpos && XFASTINT (start) < endpos) | |
173f2a64 RS |
2895 | { |
2896 | prop = Foverlay_get (overlay, Qmodification_hooks); | |
5fb5aa33 RS |
2897 | if (!NILP (prop)) |
2898 | { | |
55b48893 RS |
2899 | if (!tail_copied) |
2900 | tail = Fcopy_sequence (tail); | |
2901 | tail_copied = 1; | |
930a9140 | 2902 | call_overlay_mod_hooks (prop, overlay, after, arg1, arg2, arg3); |
5fb5aa33 | 2903 | } |
173f2a64 RS |
2904 | } |
2905 | } | |
2906 | ||
55b48893 | 2907 | tail_copied = 0; |
173f2a64 RS |
2908 | for (tail = current_buffer->overlays_after; |
2909 | CONSP (tail); | |
2910 | tail = XCONS (tail)->cdr) | |
2911 | { | |
2912 | int startpos, endpos; | |
be8b1c6b | 2913 | Lisp_Object ostart, oend; |
173f2a64 RS |
2914 | |
2915 | overlay = XCONS (tail)->car; | |
2916 | ||
2917 | ostart = OVERLAY_START (overlay); | |
2918 | oend = OVERLAY_END (overlay); | |
2919 | startpos = OVERLAY_POSITION (ostart); | |
cdf0b096 | 2920 | endpos = OVERLAY_POSITION (oend); |
173f2a64 RS |
2921 | if (XFASTINT (end) < startpos) |
2922 | break; | |
2923 | if (XFASTINT (end) == startpos && insertion) | |
2924 | { | |
2925 | prop = Foverlay_get (overlay, Qinsert_in_front_hooks); | |
5fb5aa33 RS |
2926 | if (!NILP (prop)) |
2927 | { | |
55b48893 RS |
2928 | if (!tail_copied) |
2929 | tail = Fcopy_sequence (tail); | |
2930 | tail_copied = 1; | |
930a9140 | 2931 | call_overlay_mod_hooks (prop, overlay, after, arg1, arg2, arg3); |
5fb5aa33 | 2932 | } |
173f2a64 RS |
2933 | } |
2934 | if (XFASTINT (start) == endpos && insertion) | |
2935 | { | |
2936 | prop = Foverlay_get (overlay, Qinsert_behind_hooks); | |
5fb5aa33 RS |
2937 | if (!NILP (prop)) |
2938 | { | |
55b48893 RS |
2939 | if (!tail_copied) |
2940 | tail = Fcopy_sequence (tail); | |
2941 | tail_copied = 1; | |
930a9140 | 2942 | call_overlay_mod_hooks (prop, overlay, after, arg1, arg2, arg3); |
5fb5aa33 | 2943 | } |
173f2a64 | 2944 | } |
3bd13e92 KH |
2945 | /* Test for intersecting intervals. This does the right thing |
2946 | for both insertion and deletion. */ | |
2947 | if (XFASTINT (end) > startpos && XFASTINT (start) < endpos) | |
173f2a64 RS |
2948 | { |
2949 | prop = Foverlay_get (overlay, Qmodification_hooks); | |
5fb5aa33 RS |
2950 | if (!NILP (prop)) |
2951 | { | |
55b48893 RS |
2952 | if (!tail_copied) |
2953 | tail = Fcopy_sequence (tail); | |
2954 | tail_copied = 1; | |
930a9140 | 2955 | call_overlay_mod_hooks (prop, overlay, after, arg1, arg2, arg3); |
5fb5aa33 | 2956 | } |
173f2a64 RS |
2957 | } |
2958 | } | |
55b48893 RS |
2959 | |
2960 | UNGCPRO; | |
173f2a64 RS |
2961 | } |
2962 | ||
2963 | static void | |
930a9140 RS |
2964 | call_overlay_mod_hooks (list, overlay, after, arg1, arg2, arg3) |
2965 | Lisp_Object list, overlay; | |
2966 | int after; | |
2967 | Lisp_Object arg1, arg2, arg3; | |
173f2a64 | 2968 | { |
930a9140 RS |
2969 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
2970 | GCPRO4 (list, arg1, arg2, arg3); | |
173f2a64 RS |
2971 | while (!NILP (list)) |
2972 | { | |
930a9140 RS |
2973 | if (NILP (arg3)) |
2974 | call4 (Fcar (list), overlay, after ? Qt : Qnil, arg1, arg2); | |
2975 | else | |
2976 | call5 (Fcar (list), overlay, after ? Qt : Qnil, arg1, arg2, arg3); | |
173f2a64 RS |
2977 | list = Fcdr (list); |
2978 | } | |
2979 | UNGCPRO; | |
2980 | } | |
9d7608b7 KH |
2981 | |
2982 | /* Delete any zero-sized overlays at position POS, if the `evaporate' | |
2983 | property is set. */ | |
2984 | void | |
2985 | evaporate_overlays (pos) | |
2986 | int pos; | |
2987 | { | |
2988 | Lisp_Object tail, overlay, hit_list; | |
2989 | ||
2990 | hit_list = Qnil; | |
2991 | if (pos <= XFASTINT (current_buffer->overlay_center)) | |
2992 | for (tail = current_buffer->overlays_before; CONSP (tail); | |
2993 | tail = XCONS (tail)->cdr) | |
2994 | { | |
2995 | int endpos; | |
2996 | overlay = XCONS (tail)->car; | |
2997 | endpos = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
2998 | if (endpos < pos) | |
2999 | break; | |
3000 | if (endpos == pos && OVERLAY_POSITION (OVERLAY_START (overlay)) == pos | |
c3935f9d | 3001 | && ! NILP (Foverlay_get (overlay, Qevaporate))) |
9d7608b7 KH |
3002 | hit_list = Fcons (overlay, hit_list); |
3003 | } | |
3004 | else | |
3005 | for (tail = current_buffer->overlays_after; CONSP (tail); | |
3006 | tail = XCONS (tail)->cdr) | |
3007 | { | |
3008 | int startpos; | |
889bf329 | 3009 | overlay = XCONS (tail)->car; |
9d7608b7 KH |
3010 | startpos = OVERLAY_POSITION (OVERLAY_START (overlay)); |
3011 | if (startpos > pos) | |
3012 | break; | |
3013 | if (startpos == pos && OVERLAY_POSITION (OVERLAY_END (overlay)) == pos | |
c3935f9d | 3014 | && ! NILP (Foverlay_get (overlay, Qevaporate))) |
9d7608b7 KH |
3015 | hit_list = Fcons (overlay, hit_list); |
3016 | } | |
3017 | for (; CONSP (hit_list); hit_list = XCONS (hit_list)->cdr) | |
3018 | Fdelete_overlay (XCONS (hit_list)->car); | |
3019 | } | |
173f2a64 | 3020 | \f |
54dfdeb0 KH |
3021 | /* Somebody has tried to store a value with an unacceptable type |
3022 | into the buffer-local slot with offset OFFSET. */ | |
0fa3ba92 | 3023 | void |
54dfdeb0 KH |
3024 | buffer_slot_type_mismatch (offset) |
3025 | int offset; | |
0fa3ba92 | 3026 | { |
54dfdeb0 | 3027 | Lisp_Object sym; |
0fa3ba92 | 3028 | char *type_name; |
54dfdeb0 | 3029 | sym = *(Lisp_Object *)(offset + (char *)&buffer_local_symbols); |
0fa3ba92 JB |
3030 | switch (XINT (*(Lisp_Object *)(offset + (char *)&buffer_local_types))) |
3031 | { | |
3032 | case Lisp_Int: type_name = "integers"; break; | |
3033 | case Lisp_String: type_name = "strings"; break; | |
0fa3ba92 | 3034 | case Lisp_Symbol: type_name = "symbols"; break; |
0fa3ba92 JB |
3035 | default: |
3036 | abort (); | |
3037 | } | |
3038 | ||
3039 | error ("only %s should be stored in the buffer-local variable %s", | |
54dfdeb0 | 3040 | type_name, XSYMBOL (sym)->name->data); |
0fa3ba92 JB |
3041 | } |
3042 | \f | |
1ab256cb RM |
3043 | init_buffer_once () |
3044 | { | |
3045 | register Lisp_Object tem; | |
3046 | ||
3047 | /* Make sure all markable slots in buffer_defaults | |
3048 | are initialized reasonably, so mark_buffer won't choke. */ | |
3049 | reset_buffer (&buffer_defaults); | |
bcd40520 | 3050 | reset_buffer_local_variables (&buffer_defaults); |
1ab256cb | 3051 | reset_buffer (&buffer_local_symbols); |
bcd40520 | 3052 | reset_buffer_local_variables (&buffer_local_symbols); |
336cd056 RS |
3053 | /* Prevent GC from getting confused. */ |
3054 | buffer_defaults.text = &buffer_defaults.own_text; | |
3055 | buffer_local_symbols.text = &buffer_local_symbols.own_text; | |
3056 | #ifdef USE_TEXT_PROPERTIES | |
3057 | BUF_INTERVALS (&buffer_defaults) = 0; | |
3058 | BUF_INTERVALS (&buffer_local_symbols) = 0; | |
3059 | #endif | |
67180c6a KH |
3060 | XSETBUFFER (Vbuffer_defaults, &buffer_defaults); |
3061 | XSETBUFFER (Vbuffer_local_symbols, &buffer_local_symbols); | |
1ab256cb RM |
3062 | |
3063 | /* Set up the default values of various buffer slots. */ | |
3064 | /* Must do these before making the first buffer! */ | |
3065 | ||
3066 | /* real setup is done in loaddefs.el */ | |
3067 | buffer_defaults.mode_line_format = build_string ("%-"); | |
3068 | buffer_defaults.abbrev_mode = Qnil; | |
3069 | buffer_defaults.overwrite_mode = Qnil; | |
3070 | buffer_defaults.case_fold_search = Qt; | |
3071 | buffer_defaults.auto_fill_function = Qnil; | |
3072 | buffer_defaults.selective_display = Qnil; | |
3073 | #ifndef old | |
3074 | buffer_defaults.selective_display_ellipses = Qt; | |
3075 | #endif | |
3076 | buffer_defaults.abbrev_table = Qnil; | |
3077 | buffer_defaults.display_table = Qnil; | |
1ab256cb | 3078 | buffer_defaults.undo_list = Qnil; |
c48f61ef | 3079 | buffer_defaults.mark_active = Qnil; |
be9aafdd | 3080 | buffer_defaults.file_format = Qnil; |
2eec3b4e RS |
3081 | buffer_defaults.overlays_before = Qnil; |
3082 | buffer_defaults.overlays_after = Qnil; | |
bbbe9545 | 3083 | XSETFASTINT (buffer_defaults.overlay_center, BEG); |
1ab256cb | 3084 | |
8d7a4592 | 3085 | XSETFASTINT (buffer_defaults.tab_width, 8); |
1ab256cb RM |
3086 | buffer_defaults.truncate_lines = Qnil; |
3087 | buffer_defaults.ctl_arrow = Qt; | |
3088 | ||
f7975d07 | 3089 | #ifdef DOS_NT |
0776cb1b | 3090 | buffer_defaults.buffer_file_type = Qnil; /* TEXT */ |
54ad07d3 | 3091 | #endif |
8d7a4592 KH |
3092 | XSETFASTINT (buffer_defaults.fill_column, 70); |
3093 | XSETFASTINT (buffer_defaults.left_margin, 0); | |
28e969dd | 3094 | buffer_defaults.cache_long_line_scans = Qnil; |
f6ed2e84 | 3095 | buffer_defaults.file_truename = Qnil; |
1ab256cb RM |
3096 | |
3097 | /* Assign the local-flags to the slots that have default values. | |
3098 | The local flag is a bit that is used in the buffer | |
3099 | to say that it has its own local value for the slot. | |
3100 | The local flag bits are in the local_var_flags slot of the buffer. */ | |
3101 | ||
3102 | /* Nothing can work if this isn't true */ | |
4d2f1389 | 3103 | if (sizeof (EMACS_INT) != sizeof (Lisp_Object)) abort (); |
1ab256cb RM |
3104 | |
3105 | /* 0 means not a lisp var, -1 means always local, else mask */ | |
3106 | bzero (&buffer_local_flags, sizeof buffer_local_flags); | |
aab80822 KH |
3107 | XSETINT (buffer_local_flags.filename, -1); |
3108 | XSETINT (buffer_local_flags.directory, -1); | |
3109 | XSETINT (buffer_local_flags.backed_up, -1); | |
3110 | XSETINT (buffer_local_flags.save_length, -1); | |
3111 | XSETINT (buffer_local_flags.auto_save_file_name, -1); | |
3112 | XSETINT (buffer_local_flags.read_only, -1); | |
3113 | XSETINT (buffer_local_flags.major_mode, -1); | |
3114 | XSETINT (buffer_local_flags.mode_name, -1); | |
3115 | XSETINT (buffer_local_flags.undo_list, -1); | |
3116 | XSETINT (buffer_local_flags.mark_active, -1); | |
943e065b | 3117 | XSETINT (buffer_local_flags.point_before_scroll, -1); |
f6ed2e84 | 3118 | XSETINT (buffer_local_flags.file_truename, -1); |
3cb719bd | 3119 | XSETINT (buffer_local_flags.invisibility_spec, -1); |
8d7a4592 KH |
3120 | |
3121 | XSETFASTINT (buffer_local_flags.mode_line_format, 1); | |
3122 | XSETFASTINT (buffer_local_flags.abbrev_mode, 2); | |
3123 | XSETFASTINT (buffer_local_flags.overwrite_mode, 4); | |
3124 | XSETFASTINT (buffer_local_flags.case_fold_search, 8); | |
3125 | XSETFASTINT (buffer_local_flags.auto_fill_function, 0x10); | |
3126 | XSETFASTINT (buffer_local_flags.selective_display, 0x20); | |
1ab256cb | 3127 | #ifndef old |
8d7a4592 | 3128 | XSETFASTINT (buffer_local_flags.selective_display_ellipses, 0x40); |
1ab256cb | 3129 | #endif |
8d7a4592 KH |
3130 | XSETFASTINT (buffer_local_flags.tab_width, 0x80); |
3131 | XSETFASTINT (buffer_local_flags.truncate_lines, 0x100); | |
3132 | XSETFASTINT (buffer_local_flags.ctl_arrow, 0x200); | |
3133 | XSETFASTINT (buffer_local_flags.fill_column, 0x400); | |
3134 | XSETFASTINT (buffer_local_flags.left_margin, 0x800); | |
3135 | XSETFASTINT (buffer_local_flags.abbrev_table, 0x1000); | |
3136 | XSETFASTINT (buffer_local_flags.display_table, 0x2000); | |
3137 | XSETFASTINT (buffer_local_flags.syntax_table, 0x8000); | |
28e969dd | 3138 | XSETFASTINT (buffer_local_flags.cache_long_line_scans, 0x10000); |
be9aafdd | 3139 | XSETFASTINT (buffer_local_flags.file_format, 0x20000); |
f7975d07 | 3140 | #ifdef DOS_NT |
8d7a4592 | 3141 | XSETFASTINT (buffer_local_flags.buffer_file_type, 0x4000); |
54ad07d3 | 3142 | #endif |
1ab256cb RM |
3143 | |
3144 | Vbuffer_alist = Qnil; | |
3145 | current_buffer = 0; | |
3146 | all_buffers = 0; | |
3147 | ||
3148 | QSFundamental = build_string ("Fundamental"); | |
3149 | ||
3150 | Qfundamental_mode = intern ("fundamental-mode"); | |
3151 | buffer_defaults.major_mode = Qfundamental_mode; | |
3152 | ||
3153 | Qmode_class = intern ("mode-class"); | |
3154 | ||
3155 | Qprotected_field = intern ("protected-field"); | |
3156 | ||
3157 | Qpermanent_local = intern ("permanent-local"); | |
3158 | ||
3159 | Qkill_buffer_hook = intern ("kill-buffer-hook"); | |
3160 | ||
3161 | Vprin1_to_string_buffer = Fget_buffer_create (build_string (" prin1")); | |
3162 | /* super-magic invisible buffer */ | |
3163 | Vbuffer_alist = Qnil; | |
3164 | ||
ffd56f97 | 3165 | Fset_buffer (Fget_buffer_create (build_string ("*scratch*"))); |
1ab256cb RM |
3166 | } |
3167 | ||
3168 | init_buffer () | |
3169 | { | |
3170 | char buf[MAXPATHLEN+1]; | |
2381d133 JB |
3171 | char *pwd; |
3172 | struct stat dotstat, pwdstat; | |
136351b7 | 3173 | Lisp_Object temp; |
f7975d07 | 3174 | int rc; |
1ab256cb RM |
3175 | |
3176 | Fset_buffer (Fget_buffer_create (build_string ("*scratch*"))); | |
2381d133 JB |
3177 | |
3178 | /* If PWD is accurate, use it instead of calling getwd. This is faster | |
3179 | when PWD is right, and may avoid a fatal error. */ | |
f7975d07 | 3180 | if ((pwd = getenv ("PWD")) != 0 && IS_DIRECTORY_SEP (*pwd) |
2381d133 JB |
3181 | && stat (pwd, &pwdstat) == 0 |
3182 | && stat (".", &dotstat) == 0 | |
3183 | && dotstat.st_ino == pwdstat.st_ino | |
3184 | && dotstat.st_dev == pwdstat.st_dev | |
3185 | && strlen (pwd) < MAXPATHLEN) | |
3186 | strcpy (buf, pwd); | |
3187 | else if (getwd (buf) == 0) | |
cf1e6391 | 3188 | fatal ("`getwd' failed: %s\n", buf); |
1ab256cb RM |
3189 | |
3190 | #ifndef VMS | |
3191 | /* Maybe this should really use some standard subroutine | |
3192 | whose definition is filename syntax dependent. */ | |
f7975d07 RS |
3193 | rc = strlen (buf); |
3194 | if (!(IS_DIRECTORY_SEP (buf[rc - 1]))) | |
3195 | { | |
3196 | buf[rc] = DIRECTORY_SEP; | |
3197 | buf[rc + 1] = '\0'; | |
3198 | } | |
1ab256cb RM |
3199 | #endif /* not VMS */ |
3200 | current_buffer->directory = build_string (buf); | |
136351b7 RS |
3201 | |
3202 | temp = get_minibuffer (0); | |
3203 | XBUFFER (temp)->directory = current_buffer->directory; | |
1ab256cb RM |
3204 | } |
3205 | ||
3206 | /* initialize the buffer routines */ | |
3207 | syms_of_buffer () | |
3208 | { | |
188d4d11 RM |
3209 | extern Lisp_Object Qdisabled; |
3210 | ||
1ab256cb RM |
3211 | staticpro (&Vbuffer_defaults); |
3212 | staticpro (&Vbuffer_local_symbols); | |
3213 | staticpro (&Qfundamental_mode); | |
3214 | staticpro (&Qmode_class); | |
3215 | staticpro (&QSFundamental); | |
3216 | staticpro (&Vbuffer_alist); | |
3217 | staticpro (&Qprotected_field); | |
3218 | staticpro (&Qpermanent_local); | |
3219 | staticpro (&Qkill_buffer_hook); | |
52f8ec73 | 3220 | staticpro (&Qoverlayp); |
9d7608b7 KH |
3221 | Qevaporate = intern ("evaporate"); |
3222 | staticpro (&Qevaporate); | |
294d215f RS |
3223 | staticpro (&Qmodification_hooks); |
3224 | Qmodification_hooks = intern ("modification-hooks"); | |
3225 | staticpro (&Qinsert_in_front_hooks); | |
3226 | Qinsert_in_front_hooks = intern ("insert-in-front-hooks"); | |
3227 | staticpro (&Qinsert_behind_hooks); | |
3228 | Qinsert_behind_hooks = intern ("insert-behind-hooks"); | |
5fe0b67e RS |
3229 | staticpro (&Qget_file_buffer); |
3230 | Qget_file_buffer = intern ("get-file-buffer"); | |
5985d248 KH |
3231 | Qpriority = intern ("priority"); |
3232 | staticpro (&Qpriority); | |
3233 | Qwindow = intern ("window"); | |
3234 | staticpro (&Qwindow); | |
bbbe9545 KH |
3235 | Qbefore_string = intern ("before-string"); |
3236 | staticpro (&Qbefore_string); | |
3237 | Qafter_string = intern ("after-string"); | |
3238 | staticpro (&Qafter_string); | |
52f8ec73 JB |
3239 | |
3240 | Qoverlayp = intern ("overlayp"); | |
1ab256cb RM |
3241 | |
3242 | Fput (Qprotected_field, Qerror_conditions, | |
3243 | Fcons (Qprotected_field, Fcons (Qerror, Qnil))); | |
3244 | Fput (Qprotected_field, Qerror_message, | |
3245 | build_string ("Attempt to modify a protected field")); | |
3246 | ||
3247 | /* All these use DEFVAR_LISP_NOPRO because the slots in | |
3248 | buffer_defaults will all be marked via Vbuffer_defaults. */ | |
3249 | ||
3250 | DEFVAR_LISP_NOPRO ("default-mode-line-format", | |
3251 | &buffer_defaults.mode_line_format, | |
3252 | "Default value of `mode-line-format' for buffers that don't override it.\n\ | |
3253 | This is the same as (default-value 'mode-line-format)."); | |
3254 | ||
3255 | DEFVAR_LISP_NOPRO ("default-abbrev-mode", | |
3256 | &buffer_defaults.abbrev_mode, | |
3257 | "Default value of `abbrev-mode' for buffers that do not override it.\n\ | |
3258 | This is the same as (default-value 'abbrev-mode)."); | |
3259 | ||
3260 | DEFVAR_LISP_NOPRO ("default-ctl-arrow", | |
3261 | &buffer_defaults.ctl_arrow, | |
3262 | "Default value of `ctl-arrow' for buffers that do not override it.\n\ | |
3263 | This is the same as (default-value 'ctl-arrow)."); | |
3264 | ||
3265 | DEFVAR_LISP_NOPRO ("default-truncate-lines", | |
3266 | &buffer_defaults.truncate_lines, | |
3267 | "Default value of `truncate-lines' for buffers that do not override it.\n\ | |
3268 | This is the same as (default-value 'truncate-lines)."); | |
3269 | ||
3270 | DEFVAR_LISP_NOPRO ("default-fill-column", | |
3271 | &buffer_defaults.fill_column, | |
3272 | "Default value of `fill-column' for buffers that do not override it.\n\ | |
3273 | This is the same as (default-value 'fill-column)."); | |
3274 | ||
3275 | DEFVAR_LISP_NOPRO ("default-left-margin", | |
3276 | &buffer_defaults.left_margin, | |
3277 | "Default value of `left-margin' for buffers that do not override it.\n\ | |
3278 | This is the same as (default-value 'left-margin)."); | |
3279 | ||
3280 | DEFVAR_LISP_NOPRO ("default-tab-width", | |
3281 | &buffer_defaults.tab_width, | |
3282 | "Default value of `tab-width' for buffers that do not override it.\n\ | |
3283 | This is the same as (default-value 'tab-width)."); | |
3284 | ||
3285 | DEFVAR_LISP_NOPRO ("default-case-fold-search", | |
3286 | &buffer_defaults.case_fold_search, | |
3287 | "Default value of `case-fold-search' for buffers that don't override it.\n\ | |
3288 | This is the same as (default-value 'case-fold-search)."); | |
3289 | ||
f7975d07 | 3290 | #ifdef DOS_NT |
54ad07d3 RS |
3291 | DEFVAR_LISP_NOPRO ("default-buffer-file-type", |
3292 | &buffer_defaults.buffer_file_type, | |
3293 | "Default file type for buffers that do not override it.\n\ | |
3294 | This is the same as (default-value 'buffer-file-type).\n\ | |
3295 | The file type is nil for text, t for binary."); | |
3296 | #endif | |
3297 | ||
0fa3ba92 JB |
3298 | DEFVAR_PER_BUFFER ("mode-line-format", ¤t_buffer->mode_line_format, |
3299 | Qnil, 0); | |
1ab256cb RM |
3300 | |
3301 | /* This doc string is too long for cpp; cpp dies if it isn't in a comment. | |
3302 | But make-docfile finds it! | |
3303 | DEFVAR_PER_BUFFER ("mode-line-format", ¤t_buffer->mode_line_format, | |
bec44fd6 | 3304 | Qnil, |
1ab256cb RM |
3305 | "Template for displaying mode line for current buffer.\n\ |
3306 | Each buffer has its own value of this variable.\n\ | |
3307 | Value may be a string, a symbol or a list or cons cell.\n\ | |
3308 | For a symbol, its value is used (but it is ignored if t or nil).\n\ | |
3309 | A string appearing directly as the value of a symbol is processed verbatim\n\ | |
3310 | in that the %-constructs below are not recognized.\n\ | |
3311 | For a list whose car is a symbol, the symbol's value is taken,\n\ | |
3312 | and if that is non-nil, the cadr of the list is processed recursively.\n\ | |
3313 | Otherwise, the caddr of the list (if there is one) is processed.\n\ | |
3314 | For a list whose car is a string or list, each element is processed\n\ | |
3315 | recursively and the results are effectively concatenated.\n\ | |
3316 | For a list whose car is an integer, the cdr of the list is processed\n\ | |
3317 | and padded (if the number is positive) or truncated (if negative)\n\ | |
3318 | to the width specified by that number.\n\ | |
3319 | A string is printed verbatim in the mode line except for %-constructs:\n\ | |
3320 | (%-constructs are allowed when the string is the entire mode-line-format\n\ | |
3321 | or when it is found in a cons-cell or a list)\n\ | |
3322 | %b -- print buffer name. %f -- print visited file name.\n\ | |
c2ff34f7 RS |
3323 | %* -- print %, * or hyphen. %+ -- print *, % or hyphen.\n\ |
3324 | % means buffer is read-only and * means it is modified.\n\ | |
3325 | For a modified read-only buffer, %* gives % and %+ gives *.\n\ | |
a97c374a | 3326 | %s -- print process status. %l -- print the current line number.\n\ |
dd24e6a6 | 3327 | %p -- print percent of buffer above top of window, or Top, Bot or All.\n\ |
9d130ffc | 3328 | %P -- print percent of buffer above bottom of window, perhaps plus Top,\n\ |
dd24e6a6 | 3329 | or print Bottom or All.\n\ |
1ab256cb | 3330 | %n -- print Narrow if appropriate.\n\ |
54ad07d3 | 3331 | %t -- print T if files is text, B if binary.\n\ |
1ab256cb RM |
3332 | %[ -- print one [ for each recursive editing level. %] similar.\n\ |
3333 | %% -- print %. %- -- print infinitely many dashes.\n\ | |
3334 | Decimal digits after the % specify field width to which to pad."); | |
3335 | */ | |
3336 | ||
3337 | DEFVAR_LISP_NOPRO ("default-major-mode", &buffer_defaults.major_mode, | |
3338 | "*Major mode for new buffers. Defaults to `fundamental-mode'.\n\ | |
3339 | nil here means use current buffer's major mode."); | |
3340 | ||
3341 | DEFVAR_PER_BUFFER ("major-mode", ¤t_buffer->major_mode, | |
0fa3ba92 | 3342 | make_number (Lisp_Symbol), |
1ab256cb RM |
3343 | "Symbol for current buffer's major mode."); |
3344 | ||
3345 | DEFVAR_PER_BUFFER ("mode-name", ¤t_buffer->mode_name, | |
0fa3ba92 | 3346 | make_number (Lisp_String), |
1ab256cb RM |
3347 | "Pretty name of current buffer's major mode (a string)."); |
3348 | ||
0fa3ba92 | 3349 | DEFVAR_PER_BUFFER ("abbrev-mode", ¤t_buffer->abbrev_mode, Qnil, |
1ab256cb RM |
3350 | "Non-nil turns on automatic expansion of abbrevs as they are inserted.\n\ |
3351 | Automatically becomes buffer-local when set in any fashion."); | |
3352 | ||
3353 | DEFVAR_PER_BUFFER ("case-fold-search", ¤t_buffer->case_fold_search, | |
0fa3ba92 | 3354 | Qnil, |
1ab256cb RM |
3355 | "*Non-nil if searches should ignore case.\n\ |
3356 | Automatically becomes buffer-local when set in any fashion."); | |
3357 | ||
3358 | DEFVAR_PER_BUFFER ("fill-column", ¤t_buffer->fill_column, | |
0fa3ba92 | 3359 | make_number (Lisp_Int), |
1ab256cb RM |
3360 | "*Column beyond which automatic line-wrapping should happen.\n\ |
3361 | Automatically becomes buffer-local when set in any fashion."); | |
3362 | ||
3363 | DEFVAR_PER_BUFFER ("left-margin", ¤t_buffer->left_margin, | |
0fa3ba92 | 3364 | make_number (Lisp_Int), |
1ab256cb RM |
3365 | "*Column for the default indent-line-function to indent to.\n\ |
3366 | Linefeed indents to this column in Fundamental mode.\n\ | |
3367 | Automatically becomes buffer-local when set in any fashion."); | |
3368 | ||
3369 | DEFVAR_PER_BUFFER ("tab-width", ¤t_buffer->tab_width, | |
0fa3ba92 | 3370 | make_number (Lisp_Int), |
1ab256cb RM |
3371 | "*Distance between tab stops (for display of tab characters), in columns.\n\ |
3372 | Automatically becomes buffer-local when set in any fashion."); | |
3373 | ||
0fa3ba92 | 3374 | DEFVAR_PER_BUFFER ("ctl-arrow", ¤t_buffer->ctl_arrow, Qnil, |
1ab256cb RM |
3375 | "*Non-nil means display control chars with uparrow.\n\ |
3376 | Nil means use backslash and octal digits.\n\ | |
3377 | Automatically becomes buffer-local when set in any fashion.\n\ | |
3378 | This variable does not apply to characters whose display is specified\n\ | |
3379 | in the current display table (if there is one)."); | |
3380 | ||
0fa3ba92 | 3381 | DEFVAR_PER_BUFFER ("truncate-lines", ¤t_buffer->truncate_lines, Qnil, |
1ab256cb RM |
3382 | "*Non-nil means do not display continuation lines;\n\ |
3383 | give each line of text one screen line.\n\ | |
3384 | Automatically becomes buffer-local when set in any fashion.\n\ | |
3385 | \n\ | |
3386 | Note that this is overridden by the variable\n\ | |
3387 | `truncate-partial-width-windows' if that variable is non-nil\n\ | |
502b9b64 | 3388 | and this buffer is not full-frame width."); |
1ab256cb | 3389 | |
f7975d07 | 3390 | #ifdef DOS_NT |
54ad07d3 RS |
3391 | DEFVAR_PER_BUFFER ("buffer-file-type", ¤t_buffer->buffer_file_type, |
3392 | Qnil, | |
006d3d34 RS |
3393 | "Non-nil if the visited file is a binary file.\n\ |
3394 | This variable is meaningful on MS-DOG and Windows NT.\n\ | |
3395 | On those systems, it is automatically local in every buffer.\n\ | |
e0585c64 | 3396 | On other systems, this variable is normally always nil."); |
54ad07d3 RS |
3397 | #endif |
3398 | ||
1ab256cb | 3399 | DEFVAR_PER_BUFFER ("default-directory", ¤t_buffer->directory, |
0fa3ba92 | 3400 | make_number (Lisp_String), |
1ab256cb RM |
3401 | "Name of default directory of current buffer. Should end with slash.\n\ |
3402 | Each buffer has its own value of this variable."); | |
3403 | ||
3404 | DEFVAR_PER_BUFFER ("auto-fill-function", ¤t_buffer->auto_fill_function, | |
0fa3ba92 | 3405 | Qnil, |
1ab256cb RM |
3406 | "Function called (if non-nil) to perform auto-fill.\n\ |
3407 | It is called after self-inserting a space at a column beyond `fill-column'.\n\ | |
3408 | Each buffer has its own value of this variable.\n\ | |
3409 | NOTE: This variable is not an ordinary hook;\n\ | |
3410 | It may not be a list of functions."); | |
3411 | ||
3412 | DEFVAR_PER_BUFFER ("buffer-file-name", ¤t_buffer->filename, | |
0fa3ba92 | 3413 | make_number (Lisp_String), |
1ab256cb RM |
3414 | "Name of file visited in current buffer, or nil if not visiting a file.\n\ |
3415 | Each buffer has its own value of this variable."); | |
3416 | ||
f6ed2e84 RS |
3417 | DEFVAR_PER_BUFFER ("buffer-file-truename", ¤t_buffer->file_truename, |
3418 | make_number (Lisp_String), | |
3419 | "Truename of file visited in current buffer, or nil if not visiting a file.\n\ | |
b1c03e64 RS |
3420 | The truename of a file is calculated by `file-truename'\n\ |
3421 | and then abbreviated with `abbreviate-file-name'.\n\ | |
f6ed2e84 RS |
3422 | Each buffer has its own value of this variable."); |
3423 | ||
1ab256cb | 3424 | DEFVAR_PER_BUFFER ("buffer-auto-save-file-name", |
3f5fcd47 | 3425 | ¤t_buffer->auto_save_file_name, |
0fa3ba92 | 3426 | make_number (Lisp_String), |
1ab256cb RM |
3427 | "Name of file for auto-saving current buffer,\n\ |
3428 | or nil if buffer should not be auto-saved.\n\ | |
3429 | Each buffer has its own value of this variable."); | |
3430 | ||
0fa3ba92 | 3431 | DEFVAR_PER_BUFFER ("buffer-read-only", ¤t_buffer->read_only, Qnil, |
1ab256cb RM |
3432 | "Non-nil if this buffer is read-only.\n\ |
3433 | Each buffer has its own value of this variable."); | |
3434 | ||
0fa3ba92 | 3435 | DEFVAR_PER_BUFFER ("buffer-backed-up", ¤t_buffer->backed_up, Qnil, |
1ab256cb RM |
3436 | "Non-nil if this buffer's file has been backed up.\n\ |
3437 | Backing up is done before the first time the file is saved.\n\ | |
3438 | Each buffer has its own value of this variable."); | |
3439 | ||
3440 | DEFVAR_PER_BUFFER ("buffer-saved-size", ¤t_buffer->save_length, | |
0fa3ba92 | 3441 | make_number (Lisp_Int), |
1ab256cb RM |
3442 | "Length of current buffer when last read in, saved or auto-saved.\n\ |
3443 | 0 initially.\n\ | |
3444 | Each buffer has its own value of this variable."); | |
3445 | ||
3446 | DEFVAR_PER_BUFFER ("selective-display", ¤t_buffer->selective_display, | |
0fa3ba92 | 3447 | Qnil, |
1ab256cb RM |
3448 | "Non-nil enables selective display:\n\ |
3449 | Integer N as value means display only lines\n\ | |
3450 | that start with less than n columns of space.\n\ | |
3451 | A value of t means, after a ^M, all the rest of the line is invisible.\n\ | |
3452 | Then ^M's in the file are written into files as newlines.\n\n\ | |
3453 | Automatically becomes buffer-local when set in any fashion."); | |
3454 | ||
3455 | #ifndef old | |
3456 | DEFVAR_PER_BUFFER ("selective-display-ellipses", | |
3457 | ¤t_buffer->selective_display_ellipses, | |
0fa3ba92 | 3458 | Qnil, |
1ab256cb RM |
3459 | "t means display ... on previous line when a line is invisible.\n\ |
3460 | Automatically becomes buffer-local when set in any fashion."); | |
3461 | #endif | |
3462 | ||
0fa3ba92 | 3463 | DEFVAR_PER_BUFFER ("overwrite-mode", ¤t_buffer->overwrite_mode, Qnil, |
1ab256cb | 3464 | "Non-nil if self-insertion should replace existing text.\n\ |
5e05d0a5 RS |
3465 | The value should be one of `overwrite-mode-textual',\n\ |
3466 | `overwrite-mode-binary', or nil.\n\ | |
3467 | If it is `overwrite-mode-textual', self-insertion still\n\ | |
6bbb0d4a | 3468 | inserts at the end of a line, and inserts when point is before a tab,\n\ |
2e94b813 | 3469 | until the tab is filled in.\n\ |
6bbb0d4a | 3470 | If `overwrite-mode-binary', self-insertion replaces newlines and tabs too.\n\ |
1ab256cb RM |
3471 | Automatically becomes buffer-local when set in any fashion."); |
3472 | ||
54939090 RS |
3473 | #if 0 /* The doc string is too long for some compilers, |
3474 | but make-docfile can find it in this comment. */ | |
1ab256cb | 3475 | DEFVAR_PER_BUFFER ("buffer-display-table", ¤t_buffer->display_table, |
5d305367 | 3476 | Qnil, |
1ab256cb RM |
3477 | "Display table that controls display of the contents of current buffer.\n\ |
3478 | Automatically becomes buffer-local when set in any fashion.\n\ | |
3479 | The display table is a vector created with `make-display-table'.\n\ | |
3480 | The first 256 elements control how to display each possible text character.\n\ | |
6158b3b0 | 3481 | Each value should be a vector of characters or nil;\n\ |
1ab256cb | 3482 | nil means display the character in the default fashion.\n\ |
a45e35e1 | 3483 | The remaining six elements control the display of\n\ |
6158b3b0 JB |
3484 | the end of a truncated screen line (element 256, a single character);\n\ |
3485 | the end of a continued line (element 257, a single character);\n\ | |
3486 | the escape character used to display character codes in octal\n\ | |
3487 | (element 258, a single character);\n\ | |
3488 | the character used as an arrow for control characters (element 259,\n\ | |
3489 | a single character);\n\ | |
3490 | the decoration indicating the presence of invisible lines (element 260,\n\ | |
a45e35e1 JB |
3491 | a vector of characters);\n\ |
3492 | the character used to draw the border between side-by-side windows\n\ | |
3402827c | 3493 | (element 261, a single character).\n\ |
1ab256cb RM |
3494 | If this variable is nil, the value of `standard-display-table' is used.\n\ |
3495 | Each window can have its own, overriding display table."); | |
54939090 RS |
3496 | #endif |
3497 | DEFVAR_PER_BUFFER ("buffer-display-table", ¤t_buffer->display_table, | |
de15914a | 3498 | Qnil, 0); |
1ab256cb | 3499 | |
1ab256cb RM |
3500 | /*DEFVAR_LISP ("debug-check-symbol", &Vcheck_symbol, |
3501 | "Don't ask."); | |
3502 | */ | |
01050cb5 | 3503 | DEFVAR_LISP ("before-change-function", &Vbefore_change_function, |
1ab256cb RM |
3504 | "Function to call before each text change.\n\ |
3505 | Two arguments are passed to the function: the positions of\n\ | |
3506 | the beginning and end of the range of old text to be changed.\n\ | |
3507 | \(For an insertion, the beginning and end are at the same place.)\n\ | |
3508 | No information is given about the length of the text after the change.\n\ | |
1ab256cb | 3509 | \n\ |
5f079267 | 3510 | Buffer changes made while executing the `before-change-function'\n\ |
b86344d0 RS |
3511 | don't call any before-change or after-change functions.\n\ |
3512 | That's because these variables are temporarily set to nil.\n\ | |
3513 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
3514 | these variables. See the Emacs Lisp manual for a way of\n\ | |
d59698c4 | 3515 | accomplishing an equivalent result by using other variables."); |
1ab256cb RM |
3516 | Vbefore_change_function = Qnil; |
3517 | ||
3518 | DEFVAR_LISP ("after-change-function", &Vafter_change_function, | |
3519 | "Function to call after each text change.\n\ | |
3520 | Three arguments are passed to the function: the positions of\n\ | |
3521 | the beginning and end of the range of changed text,\n\ | |
3522 | and the length of the pre-change text replaced by that range.\n\ | |
3523 | \(For an insertion, the pre-change length is zero;\n\ | |
3524 | for a deletion, that length is the number of characters deleted,\n\ | |
3525 | and the post-change beginning and end are at the same place.)\n\ | |
3526 | \n\ | |
5f079267 | 3527 | Buffer changes made while executing the `after-change-function'\n\ |
b86344d0 RS |
3528 | don't call any before-change or after-change functions.\n\ |
3529 | That's because these variables are temporarily set to nil.\n\ | |
3530 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
3531 | these variables. See the Emacs Lisp manual for a way of\n\ | |
d59698c4 | 3532 | accomplishing an equivalent result by using other variables."); |
1ab256cb RM |
3533 | Vafter_change_function = Qnil; |
3534 | ||
5f079267 RS |
3535 | DEFVAR_LISP ("before-change-functions", &Vbefore_change_functions, |
3536 | "List of functions to call before each text change.\n\ | |
3537 | Two arguments are passed to each function: the positions of\n\ | |
3538 | the beginning and end of the range of old text to be changed.\n\ | |
3539 | \(For an insertion, the beginning and end are at the same place.)\n\ | |
3540 | No information is given about the length of the text after the change.\n\ | |
5f079267 RS |
3541 | \n\ |
3542 | Buffer changes made while executing the `before-change-functions'\n\ | |
b86344d0 RS |
3543 | don't call any before-change or after-change functions.\n\ |
3544 | That's because these variables are temporarily set to nil.\n\ | |
3545 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
3546 | these variables. See the Emacs Lisp manual for a way of\n\ | |
d59698c4 | 3547 | accomplishing an equivalent result by using other variables."); |
5f079267 RS |
3548 | Vbefore_change_functions = Qnil; |
3549 | ||
3550 | DEFVAR_LISP ("after-change-functions", &Vafter_change_functions, | |
3551 | "List of function to call after each text change.\n\ | |
3552 | Three arguments are passed to each function: the positions of\n\ | |
3553 | the beginning and end of the range of changed text,\n\ | |
3554 | and the length of the pre-change text replaced by that range.\n\ | |
3555 | \(For an insertion, the pre-change length is zero;\n\ | |
3556 | for a deletion, that length is the number of characters deleted,\n\ | |
3557 | and the post-change beginning and end are at the same place.)\n\ | |
3558 | \n\ | |
3559 | Buffer changes made while executing the `after-change-functions'\n\ | |
b86344d0 RS |
3560 | don't call any before-change or after-change functions.\n\ |
3561 | That's because these variables are temporarily set to nil.\n\ | |
3562 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
3563 | these variables. See the Emacs Lisp manual for a way of\n\ | |
d59698c4 | 3564 | accomplishing an equivalent result by using other variables."); |
b86344d0 | 3565 | |
5f079267 RS |
3566 | Vafter_change_functions = Qnil; |
3567 | ||
dbc4e1c1 JB |
3568 | DEFVAR_LISP ("first-change-hook", &Vfirst_change_hook, |
3569 | "A list of functions to call before changing a buffer which is unmodified.\n\ | |
3570 | The functions are run using the `run-hooks' function."); | |
3571 | Vfirst_change_hook = Qnil; | |
3572 | Qfirst_change_hook = intern ("first-change-hook"); | |
3573 | staticpro (&Qfirst_change_hook); | |
1ab256cb | 3574 | |
54939090 RS |
3575 | #if 0 /* The doc string is too long for some compilers, |
3576 | but make-docfile can find it in this comment. */ | |
3f5fcd47 | 3577 | DEFVAR_PER_BUFFER ("buffer-undo-list", ¤t_buffer->undo_list, Qnil, |
1ab256cb RM |
3578 | "List of undo entries in current buffer.\n\ |
3579 | Recent changes come first; older changes follow newer.\n\ | |
3580 | \n\ | |
630f4018 KH |
3581 | An entry (BEG . END) represents an insertion which begins at\n\ |
3582 | position BEG and ends at position END.\n\ | |
1ab256cb RM |
3583 | \n\ |
3584 | An entry (TEXT . POSITION) represents the deletion of the string TEXT\n\ | |
3585 | from (abs POSITION). If POSITION is positive, point was at the front\n\ | |
3586 | of the text being deleted; if negative, point was at the end.\n\ | |
3587 | \n\ | |
6c0df54a RS |
3588 | An entry (t HIGH . LOW) indicates that the buffer previously had\n\ |
3589 | \"unmodified\" status. HIGH and LOW are the high and low 16-bit portions\n\ | |
3590 | of the visited file's modification time, as of that time. If the\n\ | |
3591 | modification time of the most recent save is different, this entry is\n\ | |
1ab256cb RM |
3592 | obsolete.\n\ |
3593 | \n\ | |
6c0df54a RS |
3594 | An entry (nil PROPERTY VALUE BEG . END) indicates that a text property\n\ |
3595 | was modified between BEG and END. PROPERTY is the property name,\n\ | |
3596 | and VALUE is the old value.\n\ | |
483c1fd3 | 3597 | \n\ |
bec44fd6 JB |
3598 | An entry of the form POSITION indicates that point was at the buffer\n\ |
3599 | location given by the integer. Undoing an entry of this form places\n\ | |
3600 | point at POSITION.\n\ | |
3601 | \n\ | |
1ab256cb RM |
3602 | nil marks undo boundaries. The undo command treats the changes\n\ |
3603 | between two undo boundaries as a single step to be undone.\n\ | |
3604 | \n\ | |
bec44fd6 | 3605 | If the value of the variable is t, undo information is not recorded."); |
54939090 RS |
3606 | #endif |
3607 | DEFVAR_PER_BUFFER ("buffer-undo-list", ¤t_buffer->undo_list, Qnil, | |
de15914a | 3608 | 0); |
1ab256cb | 3609 | |
c48f61ef RS |
3610 | DEFVAR_PER_BUFFER ("mark-active", ¤t_buffer->mark_active, Qnil, |
3611 | "Non-nil means the mark and region are currently active in this buffer.\n\ | |
3612 | Automatically local in all buffers."); | |
3613 | ||
28e969dd | 3614 | DEFVAR_PER_BUFFER ("cache-long-line-scans", ¤t_buffer->cache_long_line_scans, Qnil, |
f0c5b712 JB |
3615 | "Non-nil means that Emacs should use caches to handle long lines more quickly.\n\ |
3616 | This variable is buffer-local, in all buffers.\n\ | |
28e969dd | 3617 | \n\ |
f0c5b712 JB |
3618 | Normally, the line-motion functions work by scanning the buffer for\n\ |
3619 | newlines. Columnar operations (like move-to-column and\n\ | |
3620 | compute-motion) also work by scanning the buffer, summing character\n\ | |
3621 | widths as they go. This works well for ordinary text, but if the\n\ | |
28e969dd | 3622 | buffer's lines are very long (say, more than 500 characters), these\n\ |
f0c5b712 JB |
3623 | motion functions will take longer to execute. Emacs may also take\n\ |
3624 | longer to update the display.\n\ | |
28e969dd | 3625 | \n\ |
f0c5b712 JB |
3626 | If cache-long-line-scans is non-nil, these motion functions cache the\n\ |
3627 | results of their scans, and consult the cache to avoid rescanning\n\ | |
3628 | regions of the buffer until the text is modified. The caches are most\n\ | |
3629 | beneficial when they prevent the most searching---that is, when the\n\ | |
3630 | buffer contains long lines and large regions of characters with the\n\ | |
3631 | same, fixed screen width.\n\ | |
28e969dd | 3632 | \n\ |
f0c5b712 JB |
3633 | When cache-long-line-scans is non-nil, processing short lines will\n\ |
3634 | become slightly slower (because of the overhead of consulting the\n\ | |
3635 | cache), and the caches will use memory roughly proportional to the\n\ | |
3636 | number of newlines and characters whose screen width varies.\n\ | |
3637 | \n\ | |
3638 | The caches require no explicit maintenance; their accuracy is\n\ | |
3639 | maintained internally by the Emacs primitives. Enabling or disabling\n\ | |
3640 | the cache should not affect the behavior of any of the motion\n\ | |
3641 | functions; it should only affect their performance."); | |
28e969dd | 3642 | |
943e065b RS |
3643 | DEFVAR_PER_BUFFER ("point-before-scroll", ¤t_buffer->point_before_scroll, Qnil, |
3644 | "Value of point before the last series of scroll operations, or nil."); | |
3645 | ||
be9aafdd BG |
3646 | DEFVAR_PER_BUFFER ("buffer-file-format", ¤t_buffer->file_format, Qnil, |
3647 | "List of formats to use when saving this buffer.\n\ | |
3648 | Formats are defined by `format-alist'. This variable is\n\ | |
3649 | set when a file is visited. Automatically local in all buffers."); | |
3650 | ||
3cb719bd RS |
3651 | DEFVAR_PER_BUFFER ("buffer-invisibility-spec", |
3652 | ¤t_buffer->invisibility_spec, Qnil, | |
3653 | "Invisibility spec of this buffer.\n\ | |
3654 | The default is t, which means that text is invisible\n\ | |
3655 | if it has a non-nil `invisible' property.\n\ | |
3656 | If the value is a list, a text character is invisible if its `invisible'\n\ | |
3657 | property is an element in that list.\n\ | |
554216ad KH |
3658 | If an element is a cons cell of the form (PROP . ELLIPSIS),\n\ |
3659 | then characters with property value PROP are invisible,\n\ | |
3cb719bd RS |
3660 | and they have an ellipsis as well if ELLIPSIS is non-nil."); |
3661 | ||
c48f61ef RS |
3662 | DEFVAR_LISP ("transient-mark-mode", &Vtransient_mark_mode, |
3663 | "*Non-nil means deactivate the mark when the buffer contents change."); | |
3664 | Vtransient_mark_mode = Qnil; | |
3665 | ||
0a4469c9 | 3666 | DEFVAR_LISP ("inhibit-read-only", &Vinhibit_read_only, |
a96b68f1 RS |
3667 | "*Non-nil means disregard read-only status of buffers or characters.\n\ |
3668 | If the value is t, disregard `buffer-read-only' and all `read-only'\n\ | |
3669 | text properties. If the value is a list, disregard `buffer-read-only'\n\ | |
3670 | and disregard a `read-only' text property if the property value\n\ | |
3671 | is a member of the list."); | |
3672 | Vinhibit_read_only = Qnil; | |
3673 | ||
dcdffbf6 RS |
3674 | DEFVAR_LISP ("kill-buffer-query-functions", &Vkill_buffer_query_functions, |
3675 | "List of functions called with no args to query before killing a buffer."); | |
3676 | Vkill_buffer_query_functions = Qnil; | |
3677 | ||
1ab256cb RM |
3678 | defsubr (&Sbuffer_list); |
3679 | defsubr (&Sget_buffer); | |
3680 | defsubr (&Sget_file_buffer); | |
3681 | defsubr (&Sget_buffer_create); | |
336cd056 | 3682 | defsubr (&Smake_indirect_buffer); |
01050cb5 | 3683 | defsubr (&Sgenerate_new_buffer_name); |
1ab256cb RM |
3684 | defsubr (&Sbuffer_name); |
3685 | /*defsubr (&Sbuffer_number);*/ | |
3686 | defsubr (&Sbuffer_file_name); | |
336cd056 | 3687 | defsubr (&Sbuffer_base_buffer); |
1ab256cb RM |
3688 | defsubr (&Sbuffer_local_variables); |
3689 | defsubr (&Sbuffer_modified_p); | |
3690 | defsubr (&Sset_buffer_modified_p); | |
3691 | defsubr (&Sbuffer_modified_tick); | |
3692 | defsubr (&Srename_buffer); | |
3693 | defsubr (&Sother_buffer); | |
3694 | defsubr (&Sbuffer_disable_undo); | |
3695 | defsubr (&Sbuffer_enable_undo); | |
3696 | defsubr (&Skill_buffer); | |
3697 | defsubr (&Serase_buffer); | |
a9ee7a59 | 3698 | defsubr (&Sset_buffer_major_mode); |
1ab256cb RM |
3699 | defsubr (&Sswitch_to_buffer); |
3700 | defsubr (&Spop_to_buffer); | |
3701 | defsubr (&Scurrent_buffer); | |
3702 | defsubr (&Sset_buffer); | |
3703 | defsubr (&Sbarf_if_buffer_read_only); | |
3704 | defsubr (&Sbury_buffer); | |
1ab256cb | 3705 | defsubr (&Skill_all_local_variables); |
2eec3b4e | 3706 | |
52f8ec73 | 3707 | defsubr (&Soverlayp); |
2eec3b4e RS |
3708 | defsubr (&Smake_overlay); |
3709 | defsubr (&Sdelete_overlay); | |
3710 | defsubr (&Smove_overlay); | |
8ebafa8d JB |
3711 | defsubr (&Soverlay_start); |
3712 | defsubr (&Soverlay_end); | |
3713 | defsubr (&Soverlay_buffer); | |
3714 | defsubr (&Soverlay_properties); | |
2eec3b4e RS |
3715 | defsubr (&Soverlays_at); |
3716 | defsubr (&Snext_overlay_change); | |
239c932b | 3717 | defsubr (&Sprevious_overlay_change); |
2eec3b4e RS |
3718 | defsubr (&Soverlay_recenter); |
3719 | defsubr (&Soverlay_lists); | |
3720 | defsubr (&Soverlay_get); | |
3721 | defsubr (&Soverlay_put); | |
1ab256cb RM |
3722 | } |
3723 | ||
3724 | keys_of_buffer () | |
3725 | { | |
3726 | initial_define_key (control_x_map, 'b', "switch-to-buffer"); | |
3727 | initial_define_key (control_x_map, 'k', "kill-buffer"); | |
4158c17d RM |
3728 | |
3729 | /* This must not be in syms_of_buffer, because Qdisabled is not | |
3730 | initialized when that function gets called. */ | |
3731 | Fput (intern ("erase-buffer"), Qdisabled, Qt); | |
1ab256cb | 3732 | } |