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1ab256cb | 1 | /* Buffer manipulation primitives for GNU Emacs. |
0b5538bd TTN |
2 | Copyright (C) 1985, 1986, 1987, 1988, 1989, 1993, 1994, |
3 | 1995, 1997, 1998, 1999, 2000, 2001, 2002, | |
8cabe764 GM |
4 | 2003, 2004, 2005, 2006, 2007, 2008 |
5 | Free Software Foundation, Inc. | |
1ab256cb RM |
6 | |
7 | This file is part of GNU Emacs. | |
8 | ||
9ec0b715 | 9 | GNU Emacs is free software: you can redistribute it and/or modify |
1ab256cb | 10 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
11 | the Free Software Foundation, either version 3 of the License, or |
12 | (at your option) any later version. | |
1ab256cb RM |
13 | |
14 | GNU Emacs is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 20 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
1ab256cb | 21 | |
68c45bf0 | 22 | #include <config.h> |
1ab256cb | 23 | |
2381d133 JB |
24 | #include <sys/types.h> |
25 | #include <sys/stat.h> | |
1ab256cb | 26 | #include <sys/param.h> |
9dde47f5 | 27 | #include <errno.h> |
15e7873a | 28 | #include <stdio.h> |
9dde47f5 | 29 | |
2538fae4 | 30 | #ifndef USE_CRT_DLL |
9dde47f5 | 31 | extern int errno; |
2538fae4 | 32 | #endif |
1ab256cb | 33 | |
1ab256cb | 34 | |
dfcf069d AS |
35 | #ifdef HAVE_UNISTD_H |
36 | #include <unistd.h> | |
37 | #endif | |
7ee72033 | 38 | |
1ab256cb | 39 | #include "lisp.h" |
21cf4cf8 | 40 | #include "intervals.h" |
1ab256cb RM |
41 | #include "window.h" |
42 | #include "commands.h" | |
43 | #include "buffer.h" | |
8f348ed5 | 44 | #include "character.h" |
28e969dd | 45 | #include "region-cache.h" |
1ab256cb | 46 | #include "indent.h" |
d014bf88 | 47 | #include "blockinput.h" |
2538fae4 | 48 | #include "keyboard.h" |
e35f6ff7 | 49 | #include "keymap.h" |
08460cd4 | 50 | #include "frame.h" |
1ab256cb RM |
51 | |
52 | struct buffer *current_buffer; /* the current buffer */ | |
53 | ||
54 | /* First buffer in chain of all buffers (in reverse order of creation). | |
55 | Threaded through ->next. */ | |
56 | ||
57 | struct buffer *all_buffers; | |
58 | ||
59 | /* This structure holds the default values of the buffer-local variables | |
60 | defined with DEFVAR_PER_BUFFER, that have special slots in each buffer. | |
61 | The default value occupies the same slot in this structure | |
62 | as an individual buffer's value occupies in that buffer. | |
63 | Setting the default value also goes through the alist of buffers | |
64 | and stores into each buffer that does not say it has a local value. */ | |
65 | ||
6b61353c | 66 | DECL_ALIGN (struct buffer, buffer_defaults); |
1ab256cb RM |
67 | |
68 | /* A Lisp_Object pointer to the above, used for staticpro */ | |
69 | ||
70 | static Lisp_Object Vbuffer_defaults; | |
71 | ||
72 | /* This structure marks which slots in a buffer have corresponding | |
73 | default values in buffer_defaults. | |
74 | Each such slot has a nonzero value in this structure. | |
75 | The value has only one nonzero bit. | |
76 | ||
77 | When a buffer has its own local value for a slot, | |
7c02e886 GM |
78 | the entry for that slot (found in the same slot in this structure) |
79 | is turned on in the buffer's local_flags array. | |
1ab256cb RM |
80 | |
81 | If a slot in this structure is -1, then even though there may | |
82 | be a DEFVAR_PER_BUFFER for the slot, there is no default value for it; | |
83 | and the corresponding slot in buffer_defaults is not used. | |
84 | ||
85 | If a slot is -2, then there is no DEFVAR_PER_BUFFER for it, | |
86 | but there is a default value which is copied into each buffer. | |
87 | ||
1ab256cb RM |
88 | If a slot in this structure corresponding to a DEFVAR_PER_BUFFER is |
89 | zero, that is a bug */ | |
90 | ||
91 | struct buffer buffer_local_flags; | |
92 | ||
93 | /* This structure holds the names of symbols whose values may be | |
94 | buffer-local. It is indexed and accessed in the same way as the above. */ | |
95 | ||
6b61353c KH |
96 | DECL_ALIGN (struct buffer, buffer_local_symbols); |
97 | ||
1ab256cb RM |
98 | /* A Lisp_Object pointer to the above, used for staticpro */ |
99 | static Lisp_Object Vbuffer_local_symbols; | |
100 | ||
13de9290 RS |
101 | /* Flags indicating which built-in buffer-local variables |
102 | are permanent locals. */ | |
7313acd0 | 103 | static char buffer_permanent_local_flags[MAX_PER_BUFFER_VARS]; |
7c02e886 GM |
104 | |
105 | /* Number of per-buffer variables used. */ | |
106 | ||
7313acd0 | 107 | int last_per_buffer_idx; |
13de9290 | 108 | |
3709505e SM |
109 | EXFUN (Fset_buffer, 1); |
110 | void set_buffer_internal P_ ((struct buffer *b)); | |
111 | void set_buffer_internal_1 P_ ((struct buffer *b)); | |
112 | static void call_overlay_mod_hooks P_ ((Lisp_Object list, Lisp_Object overlay, | |
113 | int after, Lisp_Object arg1, | |
114 | Lisp_Object arg2, Lisp_Object arg3)); | |
115 | static void swap_out_buffer_local_variables P_ ((struct buffer *b)); | |
116 | static void reset_buffer_local_variables P_ ((struct buffer *b, int permanent_too)); | |
1ab256cb RM |
117 | |
118 | /* Alist of all buffer names vs the buffers. */ | |
119 | /* This used to be a variable, but is no longer, | |
120 | to prevent lossage due to user rplac'ing this alist or its elements. */ | |
121 | Lisp_Object Vbuffer_alist; | |
122 | ||
123 | /* Functions to call before and after each text change. */ | |
5f079267 RS |
124 | Lisp_Object Vbefore_change_functions; |
125 | Lisp_Object Vafter_change_functions; | |
1ab256cb | 126 | |
c48f61ef RS |
127 | Lisp_Object Vtransient_mark_mode; |
128 | ||
a96b68f1 RS |
129 | /* t means ignore all read-only text properties. |
130 | A list means ignore such a property if its value is a member of the list. | |
131 | Any non-nil value means ignore buffer-read-only. */ | |
132 | Lisp_Object Vinhibit_read_only; | |
133 | ||
dcdffbf6 RS |
134 | /* List of functions to call that can query about killing a buffer. |
135 | If any of these functions returns nil, we don't kill it. */ | |
136 | Lisp_Object Vkill_buffer_query_functions; | |
5b20caf0 | 137 | Lisp_Object Qkill_buffer_query_functions; |
dcdffbf6 | 138 | |
43ed3b8d CY |
139 | /* Hook run before changing a major mode. */ |
140 | Lisp_Object Vchange_major_mode_hook, Qchange_major_mode_hook; | |
141 | ||
dbc4e1c1 JB |
142 | /* List of functions to call before changing an unmodified buffer. */ |
143 | Lisp_Object Vfirst_change_hook; | |
22378665 | 144 | |
dbc4e1c1 | 145 | Lisp_Object Qfirst_change_hook; |
22378665 RS |
146 | Lisp_Object Qbefore_change_functions; |
147 | Lisp_Object Qafter_change_functions; | |
48265e61 | 148 | Lisp_Object Qucs_set_table_for_input; |
1ab256cb | 149 | |
7775635d KH |
150 | /* If nonzero, all modification hooks are suppressed. */ |
151 | int inhibit_modification_hooks; | |
152 | ||
1ab256cb | 153 | Lisp_Object Qfundamental_mode, Qmode_class, Qpermanent_local; |
2f7a359d | 154 | Lisp_Object Qpermanent_local_hook; |
1ab256cb RM |
155 | |
156 | Lisp_Object Qprotected_field; | |
157 | ||
158 | Lisp_Object QSFundamental; /* A string "Fundamental" */ | |
159 | ||
160 | Lisp_Object Qkill_buffer_hook; | |
161 | ||
5fe0b67e RS |
162 | Lisp_Object Qget_file_buffer; |
163 | ||
52f8ec73 JB |
164 | Lisp_Object Qoverlayp; |
165 | ||
bbbe9545 | 166 | Lisp_Object Qpriority, Qwindow, Qevaporate, Qbefore_string, Qafter_string; |
5985d248 | 167 | |
294d215f RS |
168 | Lisp_Object Qmodification_hooks; |
169 | Lisp_Object Qinsert_in_front_hooks; | |
170 | Lisp_Object Qinsert_behind_hooks; | |
171 | ||
b86af064 GM |
172 | static void alloc_buffer_text P_ ((struct buffer *, size_t)); |
173 | static void free_buffer_text P_ ((struct buffer *b)); | |
2410d73a | 174 | static struct Lisp_Overlay * copy_overlays P_ ((struct buffer *, struct Lisp_Overlay *)); |
2e293742 | 175 | static void modify_overlay P_ ((struct buffer *, EMACS_INT, EMACS_INT)); |
e1688f54 | 176 | static Lisp_Object buffer_lisp_local_variables P_ ((struct buffer *)); |
b86af064 | 177 | |
cab1603f | 178 | extern char * emacs_strerror P_ ((int)); |
b86af064 | 179 | |
1ab256cb RM |
180 | /* For debugging; temporary. See set_buffer_internal. */ |
181 | /* Lisp_Object Qlisp_mode, Vcheck_symbol; */ | |
182 | ||
01136e9b | 183 | void |
1ab256cb RM |
184 | nsberror (spec) |
185 | Lisp_Object spec; | |
186 | { | |
a7a60ce9 | 187 | if (STRINGP (spec)) |
d5db4077 | 188 | error ("No buffer named %s", SDATA (spec)); |
1ab256cb RM |
189 | error ("Invalid buffer argument"); |
190 | } | |
191 | \f | |
0dc88e60 | 192 | DEFUN ("buffer-live-p", Fbuffer_live_p, Sbuffer_live_p, 1, 1, 0, |
7ee72033 MB |
193 | doc: /* Return non-nil if OBJECT is a buffer which has not been killed. |
194 | Value is nil if OBJECT is not a buffer or if it has been killed. */) | |
195 | (object) | |
0dc88e60 RS |
196 | Lisp_Object object; |
197 | { | |
198 | return ((BUFFERP (object) && ! NILP (XBUFFER (object)->name)) | |
199 | ? Qt : Qnil); | |
200 | } | |
201 | ||
08460cd4 | 202 | DEFUN ("buffer-list", Fbuffer_list, Sbuffer_list, 0, 1, 0, |
7ee72033 | 203 | doc: /* Return a list of all existing live buffers. |
aef466d5 RS |
204 | If the optional arg FRAME is a frame, we return the buffer list |
205 | in the proper order for that frame: the buffers in FRAME's `buffer-list' | |
206 | frame parameter come first, followed by the rest of the buffers. */) | |
7ee72033 | 207 | (frame) |
08460cd4 | 208 | Lisp_Object frame; |
1ab256cb | 209 | { |
a18b8cb5 | 210 | Lisp_Object general; |
08460cd4 RS |
211 | general = Fmapcar (Qcdr, Vbuffer_alist); |
212 | ||
213 | if (FRAMEP (frame)) | |
214 | { | |
a18b8cb5 KL |
215 | Lisp_Object framelist, prevlist, tail; |
216 | Lisp_Object args[3]; | |
08460cd4 | 217 | |
b7826503 | 218 | CHECK_FRAME (frame); |
08460cd4 RS |
219 | |
220 | framelist = Fcopy_sequence (XFRAME (frame)->buffer_list); | |
a18b8cb5 | 221 | prevlist = Fnreverse (Fcopy_sequence (XFRAME (frame)->buried_buffer_list)); |
08460cd4 | 222 | |
a18b8cb5 KL |
223 | /* Remove from GENERAL any buffer that duplicates one in |
224 | FRAMELIST or PREVLIST. */ | |
08460cd4 | 225 | tail = framelist; |
a18b8cb5 | 226 | while (CONSP (tail)) |
08460cd4 | 227 | { |
7539e11f KR |
228 | general = Fdelq (XCAR (tail), general); |
229 | tail = XCDR (tail); | |
08460cd4 | 230 | } |
a18b8cb5 KL |
231 | tail = prevlist; |
232 | while (CONSP (tail)) | |
233 | { | |
234 | general = Fdelq (XCAR (tail), general); | |
235 | tail = XCDR (tail); | |
236 | } | |
237 | ||
238 | args[0] = framelist; | |
239 | args[1] = general; | |
240 | args[2] = prevlist; | |
241 | return Fnconc (3, args); | |
08460cd4 RS |
242 | } |
243 | ||
244 | return general; | |
1ab256cb RM |
245 | } |
246 | ||
04ae1b48 RS |
247 | /* Like Fassoc, but use Fstring_equal to compare |
248 | (which ignores text properties), | |
249 | and don't ever QUIT. */ | |
250 | ||
251 | static Lisp_Object | |
252 | assoc_ignore_text_properties (key, list) | |
253 | register Lisp_Object key; | |
254 | Lisp_Object list; | |
255 | { | |
256 | register Lisp_Object tail; | |
6d70a280 | 257 | for (tail = list; CONSP (tail); tail = XCDR (tail)) |
04ae1b48 RS |
258 | { |
259 | register Lisp_Object elt, tem; | |
6d70a280 | 260 | elt = XCAR (tail); |
04ae1b48 RS |
261 | tem = Fstring_equal (Fcar (elt), key); |
262 | if (!NILP (tem)) | |
263 | return elt; | |
264 | } | |
265 | return Qnil; | |
266 | } | |
267 | ||
1ab256cb | 268 | DEFUN ("get-buffer", Fget_buffer, Sget_buffer, 1, 1, 0, |
7ee72033 | 269 | doc: /* Return the buffer named NAME (a string). |
018ba359 | 270 | If there is no live buffer named NAME, return nil. |
7ee72033 MB |
271 | NAME may also be a buffer; if so, the value is that buffer. */) |
272 | (name) | |
1ab256cb RM |
273 | register Lisp_Object name; |
274 | { | |
a7a60ce9 | 275 | if (BUFFERP (name)) |
1ab256cb | 276 | return name; |
b7826503 | 277 | CHECK_STRING (name); |
1ab256cb | 278 | |
04ae1b48 | 279 | return Fcdr (assoc_ignore_text_properties (name, Vbuffer_alist)); |
1ab256cb RM |
280 | } |
281 | ||
282 | DEFUN ("get-file-buffer", Fget_file_buffer, Sget_file_buffer, 1, 1, 0, | |
7ee72033 | 283 | doc: /* Return the buffer visiting file FILENAME (a string). |
018ba359 PJ |
284 | The buffer's `buffer-file-name' must match exactly the expansion of FILENAME. |
285 | If there is no such live buffer, return nil. | |
7ee72033 MB |
286 | See also `find-buffer-visiting'. */) |
287 | (filename) | |
1ab256cb RM |
288 | register Lisp_Object filename; |
289 | { | |
290 | register Lisp_Object tail, buf, tem; | |
5fe0b67e RS |
291 | Lisp_Object handler; |
292 | ||
b7826503 | 293 | CHECK_STRING (filename); |
1ab256cb RM |
294 | filename = Fexpand_file_name (filename, Qnil); |
295 | ||
5fe0b67e RS |
296 | /* If the file name has special constructs in it, |
297 | call the corresponding file handler. */ | |
a617e913 | 298 | handler = Ffind_file_name_handler (filename, Qget_file_buffer); |
5fe0b67e RS |
299 | if (!NILP (handler)) |
300 | return call2 (handler, Qget_file_buffer, filename); | |
301 | ||
7539e11f | 302 | for (tail = Vbuffer_alist; CONSP (tail); tail = XCDR (tail)) |
1ab256cb | 303 | { |
7539e11f | 304 | buf = Fcdr (XCAR (tail)); |
a7a60ce9 KH |
305 | if (!BUFFERP (buf)) continue; |
306 | if (!STRINGP (XBUFFER (buf)->filename)) continue; | |
1ab256cb | 307 | tem = Fstring_equal (XBUFFER (buf)->filename, filename); |
265a9e55 | 308 | if (!NILP (tem)) |
1ab256cb RM |
309 | return buf; |
310 | } | |
311 | return Qnil; | |
312 | } | |
313 | ||
52e01189 RS |
314 | Lisp_Object |
315 | get_truename_buffer (filename) | |
316 | register Lisp_Object filename; | |
317 | { | |
318 | register Lisp_Object tail, buf, tem; | |
319 | ||
7539e11f | 320 | for (tail = Vbuffer_alist; CONSP (tail); tail = XCDR (tail)) |
52e01189 | 321 | { |
7539e11f | 322 | buf = Fcdr (XCAR (tail)); |
52e01189 RS |
323 | if (!BUFFERP (buf)) continue; |
324 | if (!STRINGP (XBUFFER (buf)->file_truename)) continue; | |
325 | tem = Fstring_equal (XBUFFER (buf)->file_truename, filename); | |
326 | if (!NILP (tem)) | |
327 | return buf; | |
328 | } | |
329 | return Qnil; | |
330 | } | |
331 | ||
1ab256cb RM |
332 | /* Incremented for each buffer created, to assign the buffer number. */ |
333 | int buffer_count; | |
334 | ||
335 | DEFUN ("get-buffer-create", Fget_buffer_create, Sget_buffer_create, 1, 1, 0, | |
7ee72033 | 336 | doc: /* Return the buffer named NAME, or create such a buffer and return it. |
018ba359 PJ |
337 | A new buffer is created if there is no live buffer named NAME. |
338 | If NAME starts with a space, the new buffer does not keep undo information. | |
339 | If NAME is a buffer instead of a string, then it is the value returned. | |
7ee72033 MB |
340 | The value is never nil. */) |
341 | (name) | |
1ab256cb RM |
342 | register Lisp_Object name; |
343 | { | |
a9ee7a59 | 344 | register Lisp_Object buf; |
1ab256cb RM |
345 | register struct buffer *b; |
346 | ||
347 | buf = Fget_buffer (name); | |
265a9e55 | 348 | if (!NILP (buf)) |
1ab256cb RM |
349 | return buf; |
350 | ||
d5db4077 | 351 | if (SCHARS (name) == 0) |
31cd83e9 KH |
352 | error ("Empty string for buffer name is not allowed"); |
353 | ||
cc648cef | 354 | b = allocate_buffer (); |
1ab256cb | 355 | |
336cd056 RS |
356 | /* An ordinary buffer uses its own struct buffer_text. */ |
357 | b->text = &b->own_text; | |
358 | b->base_buffer = 0; | |
359 | ||
1ab256cb | 360 | BUF_GAP_SIZE (b) = 20; |
9ac0d9e0 | 361 | BLOCK_INPUT; |
3b06f880 KH |
362 | /* We allocate extra 1-byte at the tail and keep it always '\0' for |
363 | anchoring a search. */ | |
b86af064 | 364 | alloc_buffer_text (b, BUF_GAP_SIZE (b) + 1); |
9ac0d9e0 | 365 | UNBLOCK_INPUT; |
1ab256cb | 366 | if (! BUF_BEG_ADDR (b)) |
81841847 | 367 | buffer_memory_full (); |
1ab256cb | 368 | |
6d70a280 SM |
369 | BUF_PT (b) = BEG; |
370 | BUF_GPT (b) = BEG; | |
371 | BUF_BEGV (b) = BEG; | |
372 | BUF_ZV (b) = BEG; | |
373 | BUF_Z (b) = BEG; | |
374 | BUF_PT_BYTE (b) = BEG_BYTE; | |
375 | BUF_GPT_BYTE (b) = BEG_BYTE; | |
376 | BUF_BEGV_BYTE (b) = BEG_BYTE; | |
377 | BUF_ZV_BYTE (b) = BEG_BYTE; | |
378 | BUF_Z_BYTE (b) = BEG_BYTE; | |
1ab256cb | 379 | BUF_MODIFF (b) = 1; |
3e145152 | 380 | BUF_CHARS_MODIFF (b) = 1; |
2509d356 | 381 | BUF_OVERLAY_MODIFF (b) = 1; |
336cd056 RS |
382 | BUF_SAVE_MODIFF (b) = 1; |
383 | BUF_INTERVALS (b) = 0; | |
b5a225b4 GM |
384 | BUF_UNCHANGED_MODIFIED (b) = 1; |
385 | BUF_OVERLAY_UNCHANGED_MODIFIED (b) = 1; | |
386 | BUF_END_UNCHANGED (b) = 0; | |
387 | BUF_BEG_UNCHANGED (b) = 0; | |
3b06f880 | 388 | *(BUF_GPT_ADDR (b)) = *(BUF_Z_ADDR (b)) = 0; /* Put an anchor '\0'. */ |
1ab256cb | 389 | |
28e969dd JB |
390 | b->newline_cache = 0; |
391 | b->width_run_cache = 0; | |
392 | b->width_table = Qnil; | |
b5a225b4 | 393 | b->prevent_redisplay_optimizations_p = 1; |
28e969dd | 394 | |
1ab256cb RM |
395 | /* Put this on the chain of all buffers including killed ones. */ |
396 | b->next = all_buffers; | |
397 | all_buffers = b; | |
398 | ||
336cd056 RS |
399 | /* An ordinary buffer normally doesn't need markers |
400 | to handle BEGV and ZV. */ | |
401 | b->pt_marker = Qnil; | |
402 | b->begv_marker = Qnil; | |
403 | b->zv_marker = Qnil; | |
04ae1b48 RS |
404 | |
405 | name = Fcopy_sequence (name); | |
ab77f05c | 406 | STRING_SET_INTERVALS (name, NULL_INTERVAL); |
1ab256cb | 407 | b->name = name; |
04ae1b48 | 408 | |
67ee9f6e | 409 | b->undo_list = (SREF (name, 0) != ' ') ? Qnil : Qt; |
1ab256cb RM |
410 | |
411 | reset_buffer (b); | |
13de9290 | 412 | reset_buffer_local_variables (b, 1); |
1ab256cb | 413 | |
1f57cb74 | 414 | b->mark = Fmake_marker (); |
65745fad | 415 | BUF_MARKERS (b) = NULL; |
1f57cb74 RS |
416 | b->name = name; |
417 | ||
1ab256cb | 418 | /* Put this in the alist of all live buffers. */ |
67180c6a | 419 | XSETBUFFER (buf, b); |
1ab256cb RM |
420 | Vbuffer_alist = nconc2 (Vbuffer_alist, Fcons (Fcons (name, buf), Qnil)); |
421 | ||
2f064abf | 422 | /* An error in calling the function here (should someone redefine it) |
d36b182f DL |
423 | can lead to infinite regress until you run out of stack. rms |
424 | says that's not worth protecting against. */ | |
48265e61 | 425 | if (!NILP (Ffboundp (Qucs_set_table_for_input))) |
d36b182f | 426 | /* buf is on buffer-alist, so no gcpro. */ |
48265e61 DL |
427 | call1 (Qucs_set_table_for_input, buf); |
428 | ||
336cd056 RS |
429 | return buf; |
430 | } | |
431 | ||
7e9d5818 | 432 | |
04e4cb3a GM |
433 | /* Return a list of overlays which is a copy of the overlay list |
434 | LIST, but for buffer B. */ | |
435 | ||
2410d73a | 436 | static struct Lisp_Overlay * |
04e4cb3a GM |
437 | copy_overlays (b, list) |
438 | struct buffer *b; | |
2410d73a | 439 | struct Lisp_Overlay *list; |
04e4cb3a | 440 | { |
2410d73a SM |
441 | Lisp_Object buffer; |
442 | struct Lisp_Overlay *result = NULL, *tail = NULL; | |
04e4cb3a GM |
443 | |
444 | XSETBUFFER (buffer, b); | |
445 | ||
2410d73a | 446 | for (; list; list = list->next) |
04e4cb3a GM |
447 | { |
448 | Lisp_Object overlay, start, end, old_overlay; | |
27c6b98e | 449 | EMACS_INT charpos; |
04e4cb3a | 450 | |
2410d73a | 451 | XSETMISC (old_overlay, list); |
04e4cb3a GM |
452 | charpos = marker_position (OVERLAY_START (old_overlay)); |
453 | start = Fmake_marker (); | |
db3a49a6 | 454 | Fset_marker (start, make_number (charpos), buffer); |
04e4cb3a GM |
455 | XMARKER (start)->insertion_type |
456 | = XMARKER (OVERLAY_START (old_overlay))->insertion_type; | |
457 | ||
458 | charpos = marker_position (OVERLAY_END (old_overlay)); | |
459 | end = Fmake_marker (); | |
db3a49a6 | 460 | Fset_marker (end, make_number (charpos), buffer); |
04e4cb3a GM |
461 | XMARKER (end)->insertion_type |
462 | = XMARKER (OVERLAY_END (old_overlay))->insertion_type; | |
463 | ||
464 | overlay = allocate_misc (); | |
465 | XMISCTYPE (overlay) = Lisp_Misc_Overlay; | |
466 | OVERLAY_START (overlay) = start; | |
467 | OVERLAY_END (overlay) = end; | |
468 | OVERLAY_PLIST (overlay) = Fcopy_sequence (OVERLAY_PLIST (old_overlay)); | |
2410d73a | 469 | XOVERLAY (overlay)->next = NULL; |
177c0ea7 | 470 | |
2410d73a SM |
471 | if (tail) |
472 | tail = tail->next = XOVERLAY (overlay); | |
473 | else | |
474 | result = tail = XOVERLAY (overlay); | |
04e4cb3a GM |
475 | } |
476 | ||
2410d73a | 477 | return result; |
04e4cb3a | 478 | } |
177c0ea7 | 479 | |
04e4cb3a | 480 | |
7e9d5818 GM |
481 | /* Clone per-buffer values of buffer FROM. |
482 | ||
483 | Buffer TO gets the same per-buffer values as FROM, with the | |
484 | following exceptions: (1) TO's name is left untouched, (2) markers | |
485 | are copied and made to refer to TO, and (3) overlay lists are | |
486 | copied. */ | |
487 | ||
488 | static void | |
489 | clone_per_buffer_values (from, to) | |
490 | struct buffer *from, *to; | |
491 | { | |
54622f33 | 492 | Lisp_Object to_buffer; |
7e9d5818 GM |
493 | int offset; |
494 | ||
495 | XSETBUFFER (to_buffer, to); | |
177c0ea7 | 496 | |
3ee24aec SM |
497 | /* buffer-local Lisp variables start at `undo_list', |
498 | tho only the ones from `name' on are GC'd normally. */ | |
499 | for (offset = PER_BUFFER_VAR_OFFSET (undo_list) + sizeof (Lisp_Object); | |
7e9d5818 GM |
500 | offset < sizeof *to; |
501 | offset += sizeof (Lisp_Object)) | |
502 | { | |
503 | Lisp_Object obj; | |
504 | ||
505 | obj = PER_BUFFER_VALUE (from, offset); | |
506 | if (MARKERP (obj)) | |
507 | { | |
508 | struct Lisp_Marker *m = XMARKER (obj); | |
509 | obj = Fmake_marker (); | |
510 | XMARKER (obj)->insertion_type = m->insertion_type; | |
511 | set_marker_both (obj, to_buffer, m->charpos, m->bytepos); | |
512 | } | |
513 | ||
514 | PER_BUFFER_VALUE (to, offset) = obj; | |
515 | } | |
516 | ||
7e9d5818 | 517 | bcopy (from->local_flags, to->local_flags, sizeof to->local_flags); |
177c0ea7 | 518 | |
04e4cb3a GM |
519 | to->overlays_before = copy_overlays (to, from->overlays_before); |
520 | to->overlays_after = copy_overlays (to, from->overlays_after); | |
02f28bbd | 521 | |
e1688f54 RS |
522 | /* Get (a copy of) the alist of Lisp-level local variables of FROM |
523 | and install that in TO. */ | |
524 | to->local_var_alist = buffer_lisp_local_variables (from); | |
7e9d5818 GM |
525 | } |
526 | ||
7e9d5818 GM |
527 | DEFUN ("make-indirect-buffer", Fmake_indirect_buffer, Smake_indirect_buffer, |
528 | 2, 3, | |
193c3837 | 529 | "bMake indirect buffer (to buffer): \nBName of indirect buffer: ", |
7ee72033 | 530 | doc: /* Create and return an indirect buffer for buffer BASE-BUFFER, named NAME. |
6b61353c | 531 | BASE-BUFFER should be a live buffer, or the name of an existing buffer. |
018ba359 PJ |
532 | NAME should be a string which is not the name of an existing buffer. |
533 | Optional argument CLONE non-nil means preserve BASE-BUFFER's state, | |
534 | such as major and minor modes, in the indirect buffer. | |
7ee72033 MB |
535 | CLONE nil means the indirect buffer's state is reset to default values. */) |
536 | (base_buffer, name, clone) | |
7e9d5818 | 537 | Lisp_Object base_buffer, name, clone; |
336cd056 | 538 | { |
6b61353c | 539 | Lisp_Object buf, tem; |
7e9d5818 | 540 | struct buffer *b; |
336cd056 | 541 | |
6b61353c | 542 | CHECK_STRING (name); |
336cd056 RS |
543 | buf = Fget_buffer (name); |
544 | if (!NILP (buf)) | |
d5db4077 | 545 | error ("Buffer name `%s' is in use", SDATA (name)); |
336cd056 | 546 | |
6b61353c | 547 | tem = base_buffer; |
336cd056 RS |
548 | base_buffer = Fget_buffer (base_buffer); |
549 | if (NILP (base_buffer)) | |
6b61353c KH |
550 | error ("No such buffer: `%s'", SDATA (tem)); |
551 | if (NILP (XBUFFER (base_buffer)->name)) | |
552 | error ("Base buffer has been killed"); | |
336cd056 | 553 | |
d5db4077 | 554 | if (SCHARS (name) == 0) |
336cd056 RS |
555 | error ("Empty string for buffer name is not allowed"); |
556 | ||
cc648cef | 557 | b = allocate_buffer (); |
336cd056 | 558 | |
67ee9f6e SM |
559 | b->base_buffer = (XBUFFER (base_buffer)->base_buffer |
560 | ? XBUFFER (base_buffer)->base_buffer | |
561 | : XBUFFER (base_buffer)); | |
336cd056 RS |
562 | |
563 | /* Use the base buffer's text object. */ | |
564 | b->text = b->base_buffer->text; | |
565 | ||
566 | BUF_BEGV (b) = BUF_BEGV (b->base_buffer); | |
567 | BUF_ZV (b) = BUF_ZV (b->base_buffer); | |
568 | BUF_PT (b) = BUF_PT (b->base_buffer); | |
3f236a40 RS |
569 | BUF_BEGV_BYTE (b) = BUF_BEGV_BYTE (b->base_buffer); |
570 | BUF_ZV_BYTE (b) = BUF_ZV_BYTE (b->base_buffer); | |
571 | BUF_PT_BYTE (b) = BUF_PT_BYTE (b->base_buffer); | |
336cd056 RS |
572 | |
573 | b->newline_cache = 0; | |
574 | b->width_run_cache = 0; | |
575 | b->width_table = Qnil; | |
576 | ||
577 | /* Put this on the chain of all buffers including killed ones. */ | |
578 | b->next = all_buffers; | |
579 | all_buffers = b; | |
580 | ||
581 | name = Fcopy_sequence (name); | |
ab77f05c | 582 | STRING_SET_INTERVALS (name, NULL_INTERVAL); |
336cd056 RS |
583 | b->name = name; |
584 | ||
585 | reset_buffer (b); | |
13de9290 | 586 | reset_buffer_local_variables (b, 1); |
336cd056 RS |
587 | |
588 | /* Put this in the alist of all live buffers. */ | |
589 | XSETBUFFER (buf, b); | |
590 | Vbuffer_alist = nconc2 (Vbuffer_alist, Fcons (Fcons (name, buf), Qnil)); | |
591 | ||
592 | b->mark = Fmake_marker (); | |
1ab256cb | 593 | b->name = name; |
336cd056 | 594 | |
abc9d959 RS |
595 | /* The multibyte status belongs to the base buffer. */ |
596 | b->enable_multibyte_characters = b->base_buffer->enable_multibyte_characters; | |
597 | ||
336cd056 RS |
598 | /* Make sure the base buffer has markers for its narrowing. */ |
599 | if (NILP (b->base_buffer->pt_marker)) | |
600 | { | |
601 | b->base_buffer->pt_marker = Fmake_marker (); | |
3f236a40 RS |
602 | set_marker_both (b->base_buffer->pt_marker, base_buffer, |
603 | BUF_PT (b->base_buffer), | |
604 | BUF_PT_BYTE (b->base_buffer)); | |
336cd056 RS |
605 | } |
606 | if (NILP (b->base_buffer->begv_marker)) | |
607 | { | |
608 | b->base_buffer->begv_marker = Fmake_marker (); | |
3f236a40 RS |
609 | set_marker_both (b->base_buffer->begv_marker, base_buffer, |
610 | BUF_BEGV (b->base_buffer), | |
611 | BUF_BEGV_BYTE (b->base_buffer)); | |
336cd056 RS |
612 | } |
613 | if (NILP (b->base_buffer->zv_marker)) | |
614 | { | |
615 | b->base_buffer->zv_marker = Fmake_marker (); | |
3f236a40 RS |
616 | set_marker_both (b->base_buffer->zv_marker, base_buffer, |
617 | BUF_ZV (b->base_buffer), | |
618 | BUF_ZV_BYTE (b->base_buffer)); | |
26d84681 | 619 | XMARKER (b->base_buffer->zv_marker)->insertion_type = 1; |
336cd056 RS |
620 | } |
621 | ||
7e9d5818 GM |
622 | if (NILP (clone)) |
623 | { | |
624 | /* Give the indirect buffer markers for its narrowing. */ | |
625 | b->pt_marker = Fmake_marker (); | |
626 | set_marker_both (b->pt_marker, buf, BUF_PT (b), BUF_PT_BYTE (b)); | |
627 | b->begv_marker = Fmake_marker (); | |
628 | set_marker_both (b->begv_marker, buf, BUF_BEGV (b), BUF_BEGV_BYTE (b)); | |
629 | b->zv_marker = Fmake_marker (); | |
630 | set_marker_both (b->zv_marker, buf, BUF_ZV (b), BUF_ZV_BYTE (b)); | |
631 | XMARKER (b->zv_marker)->insertion_type = 1; | |
632 | } | |
633 | else | |
7fa57e45 RS |
634 | { |
635 | struct buffer *old_b = current_buffer; | |
636 | ||
637 | clone_per_buffer_values (b->base_buffer, b); | |
638 | b->filename = Qnil; | |
639 | b->file_truename = Qnil; | |
640 | b->display_count = make_number (0); | |
641 | b->backed_up = Qnil; | |
642 | b->auto_save_file_name = Qnil; | |
643 | set_buffer_internal_1 (b); | |
644 | Fset (intern ("buffer-save-without-query"), Qnil); | |
645 | Fset (intern ("buffer-file-number"), Qnil); | |
646 | Fset (intern ("buffer-stale-function"), Qnil); | |
647 | set_buffer_internal_1 (old_b); | |
648 | } | |
336cd056 | 649 | |
a9ee7a59 | 650 | return buf; |
1ab256cb RM |
651 | } |
652 | ||
d4f5719a SM |
653 | void |
654 | delete_all_overlays (b) | |
655 | struct buffer *b; | |
656 | { | |
657 | Lisp_Object overlay; | |
658 | ||
659 | /* `reset_buffer' blindly sets the list of overlays to NULL, so we | |
660 | have to empty the list, otherwise we end up with overlays that | |
661 | think they belong to this buffer while the buffer doesn't know about | |
662 | them any more. */ | |
663 | while (b->overlays_before) | |
664 | { | |
665 | XSETMISC (overlay, b->overlays_before); | |
666 | Fdelete_overlay (overlay); | |
667 | } | |
668 | while (b->overlays_after) | |
669 | { | |
670 | XSETMISC (overlay, b->overlays_after); | |
671 | Fdelete_overlay (overlay); | |
672 | } | |
673 | eassert (b->overlays_before == NULL); | |
674 | eassert (b->overlays_after == NULL); | |
675 | } | |
676 | ||
bcd40520 | 677 | /* Reinitialize everything about a buffer except its name and contents |
6b61353c | 678 | and local variables. |
d4f5719a SM |
679 | If called on an already-initialized buffer, the list of overlays |
680 | should be deleted before calling this function, otherwise we end up | |
681 | with overlays that claim to belong to the buffer but the buffer | |
682 | claims it doesn't belong to it. */ | |
1ab256cb RM |
683 | |
684 | void | |
685 | reset_buffer (b) | |
686 | register struct buffer *b; | |
687 | { | |
688 | b->filename = Qnil; | |
f6ed2e84 | 689 | b->file_truename = Qnil; |
1ab256cb RM |
690 | b->directory = (current_buffer) ? current_buffer->directory : Qnil; |
691 | b->modtime = 0; | |
8d7a4592 | 692 | XSETFASTINT (b->save_length, 0); |
1ab256cb | 693 | b->last_window_start = 1; |
8b264726 | 694 | /* It is more conservative to start out "changed" than "unchanged". */ |
b5a225b4 GM |
695 | b->clip_changed = 0; |
696 | b->prevent_redisplay_optimizations_p = 1; | |
1ab256cb RM |
697 | b->backed_up = Qnil; |
698 | b->auto_save_modified = 0; | |
84f6bcba | 699 | b->auto_save_failure_time = -1; |
1ab256cb RM |
700 | b->auto_save_file_name = Qnil; |
701 | b->read_only = Qnil; | |
2410d73a SM |
702 | b->overlays_before = NULL; |
703 | b->overlays_after = NULL; | |
c2d5b10f | 704 | b->overlay_center = BEG; |
dfda7a7f | 705 | b->mark_active = Qnil; |
943e065b | 706 | b->point_before_scroll = Qnil; |
be9aafdd | 707 | b->file_format = Qnil; |
71ed49fa | 708 | b->auto_save_file_format = Qt; |
0dc6f165 | 709 | b->last_selected_window = Qnil; |
7962a441 | 710 | XSETINT (b->display_count, 0); |
3fd364db | 711 | b->display_time = Qnil; |
1bf08baf | 712 | b->enable_multibyte_characters = buffer_defaults.enable_multibyte_characters; |
bb2ec976 | 713 | b->cursor_type = buffer_defaults.cursor_type; |
a3bbced0 | 714 | b->extra_line_spacing = buffer_defaults.extra_line_spacing; |
0522997d RS |
715 | |
716 | b->display_error_modiff = 0; | |
1ab256cb RM |
717 | } |
718 | ||
bcd40520 RS |
719 | /* Reset buffer B's local variables info. |
720 | Don't use this on a buffer that has already been in use; | |
721 | it does not treat permanent locals consistently. | |
13de9290 RS |
722 | Instead, use Fkill_all_local_variables. |
723 | ||
3709505e | 724 | If PERMANENT_TOO is 1, then we reset permanent |
13de9290 RS |
725 | buffer-local variables. If PERMANENT_TOO is 0, |
726 | we preserve those. */ | |
bcd40520 | 727 | |
13de9290 RS |
728 | static void |
729 | reset_buffer_local_variables (b, permanent_too) | |
1ab256cb | 730 | register struct buffer *b; |
13de9290 | 731 | int permanent_too; |
1ab256cb RM |
732 | { |
733 | register int offset; | |
7c02e886 | 734 | int i; |
1ab256cb RM |
735 | |
736 | /* Reset the major mode to Fundamental, together with all the | |
737 | things that depend on the major mode. | |
738 | default-major-mode is handled at a higher level. | |
739 | We ignore it here. */ | |
740 | b->major_mode = Qfundamental_mode; | |
741 | b->keymap = Qnil; | |
1ab256cb RM |
742 | b->mode_name = QSFundamental; |
743 | b->minor_modes = Qnil; | |
3446af9c RS |
744 | |
745 | /* If the standard case table has been altered and invalidated, | |
746 | fix up its insides first. */ | |
747 | if (! (CHAR_TABLE_P (XCHAR_TABLE (Vascii_downcase_table)->extras[0]) | |
748 | && CHAR_TABLE_P (XCHAR_TABLE (Vascii_downcase_table)->extras[1]) | |
749 | && CHAR_TABLE_P (XCHAR_TABLE (Vascii_downcase_table)->extras[2]))) | |
750 | Fset_standard_case_table (Vascii_downcase_table); | |
751 | ||
1ab256cb | 752 | b->downcase_table = Vascii_downcase_table; |
1e9b6335 RS |
753 | b->upcase_table = XCHAR_TABLE (Vascii_downcase_table)->extras[0]; |
754 | b->case_canon_table = XCHAR_TABLE (Vascii_downcase_table)->extras[1]; | |
755 | b->case_eqv_table = XCHAR_TABLE (Vascii_downcase_table)->extras[2]; | |
3cb719bd | 756 | b->invisibility_spec = Qt; |
2e716096 RS |
757 | #ifndef DOS_NT |
758 | b->buffer_file_type = Qnil; | |
759 | #endif | |
3cb719bd | 760 | |
13de9290 | 761 | /* Reset all (or most) per-buffer variables to their defaults. */ |
3709505e SM |
762 | if (permanent_too) |
763 | b->local_var_alist = Qnil; | |
764 | else | |
765 | { | |
2f7a359d | 766 | Lisp_Object tmp, prop, last = Qnil; |
3709505e SM |
767 | for (tmp = b->local_var_alist; CONSP (tmp); tmp = XCDR (tmp)) |
768 | if (CONSP (XCAR (tmp)) | |
769 | && SYMBOLP (XCAR (XCAR (tmp))) | |
2f7a359d RS |
770 | && !NILP (prop = Fget (XCAR (XCAR (tmp)), Qpermanent_local))) |
771 | { | |
772 | /* If permanent-local, keep it. */ | |
773 | last = tmp; | |
774 | if (EQ (prop, Qpermanent_local_hook)) | |
775 | { | |
776 | /* This is a partially permanent hook variable. | |
777 | Preserve only the elements that want to be preserved. */ | |
778 | Lisp_Object list, newlist; | |
779 | list = XCDR (XCAR (tmp)); | |
780 | if (!CONSP (list)) | |
781 | newlist = list; | |
782 | else | |
783 | for (newlist = Qnil; CONSP (list); list = XCDR (list)) | |
784 | { | |
785 | Lisp_Object elt = XCAR (list); | |
786 | /* Preserve element ELT if it's t, | |
787 | if it is a function with a `permanent-local-hook' property, | |
788 | or if it's not a symbol. */ | |
789 | if (! SYMBOLP (elt) | |
790 | || EQ (elt, Qt) | |
791 | || !NILP (Fget (elt, Qpermanent_local_hook))) | |
792 | newlist = Fcons (elt, newlist); | |
793 | } | |
794 | XSETCDR (XCAR (tmp), Fnreverse (newlist)); | |
795 | } | |
796 | } | |
797 | /* Delete this local variable. */ | |
3709505e SM |
798 | else if (NILP (last)) |
799 | b->local_var_alist = XCDR (tmp); | |
800 | else | |
801 | XSETCDR (last, XCDR (tmp)); | |
802 | } | |
803 | ||
7313acd0 | 804 | for (i = 0; i < last_per_buffer_idx; ++i) |
7c02e886 | 805 | if (permanent_too || buffer_permanent_local_flags[i] == 0) |
7313acd0 | 806 | SET_PER_BUFFER_VALUE_P (b, i, 0); |
1ab256cb RM |
807 | |
808 | /* For each slot that has a default value, | |
809 | copy that into the slot. */ | |
810 | ||
3ee24aec SM |
811 | /* buffer-local Lisp variables start at `undo_list', |
812 | tho only the ones from `name' on are GC'd normally. */ | |
813 | for (offset = PER_BUFFER_VAR_OFFSET (undo_list); | |
7c02e886 GM |
814 | offset < sizeof *b; |
815 | offset += sizeof (Lisp_Object)) | |
aab80822 | 816 | { |
7313acd0 | 817 | int idx = PER_BUFFER_IDX (offset); |
7c02e886 GM |
818 | if ((idx > 0 |
819 | && (permanent_too | |
820 | || buffer_permanent_local_flags[idx] == 0)) | |
821 | /* Is -2 used anywhere? */ | |
822 | || idx == -2) | |
7313acd0 | 823 | PER_BUFFER_VALUE (b, offset) = PER_BUFFER_DEFAULT (offset); |
aab80822 | 824 | } |
1ab256cb RM |
825 | } |
826 | ||
01050cb5 RM |
827 | /* We split this away from generate-new-buffer, because rename-buffer |
828 | and set-visited-file-name ought to be able to use this to really | |
829 | rename the buffer properly. */ | |
830 | ||
831 | DEFUN ("generate-new-buffer-name", Fgenerate_new_buffer_name, Sgenerate_new_buffer_name, | |
efc7e75f | 832 | 1, 2, 0, |
7ee72033 | 833 | doc: /* Return a string that is the name of no existing buffer based on NAME. |
018ba359 PJ |
834 | If there is no live buffer named NAME, then return NAME. |
835 | Otherwise modify name by appending `<NUMBER>', incrementing NUMBER | |
6b61353c | 836 | \(starting at 2) until an unused name is found, and then return that name. |
2f064abf JB |
837 | Optional second argument IGNORE specifies a name that is okay to use (if |
838 | it is in the sequence to be tried) even if a buffer with that name exists. */) | |
7ee72033 | 839 | (name, ignore) |
c273e647 | 840 | register Lisp_Object name, ignore; |
1ab256cb RM |
841 | { |
842 | register Lisp_Object gentemp, tem; | |
843 | int count; | |
844 | char number[10]; | |
845 | ||
b7826503 | 846 | CHECK_STRING (name); |
1ab256cb | 847 | |
6b61353c KH |
848 | tem = Fstring_equal (name, ignore); |
849 | if (!NILP (tem)) | |
850 | return name; | |
1ab256cb | 851 | tem = Fget_buffer (name); |
265a9e55 | 852 | if (NILP (tem)) |
01050cb5 | 853 | return name; |
1ab256cb RM |
854 | |
855 | count = 1; | |
856 | while (1) | |
857 | { | |
858 | sprintf (number, "<%d>", ++count); | |
859 | gentemp = concat2 (name, build_string (number)); | |
638e4fc3 | 860 | tem = Fstring_equal (gentemp, ignore); |
c273e647 RS |
861 | if (!NILP (tem)) |
862 | return gentemp; | |
1ab256cb | 863 | tem = Fget_buffer (gentemp); |
265a9e55 | 864 | if (NILP (tem)) |
01050cb5 | 865 | return gentemp; |
1ab256cb RM |
866 | } |
867 | } | |
868 | ||
869 | \f | |
870 | DEFUN ("buffer-name", Fbuffer_name, Sbuffer_name, 0, 1, 0, | |
7ee72033 MB |
871 | doc: /* Return the name of BUFFER, as a string. |
872 | With no argument or nil as argument, return the name of the current buffer. */) | |
873 | (buffer) | |
1ab256cb RM |
874 | register Lisp_Object buffer; |
875 | { | |
265a9e55 | 876 | if (NILP (buffer)) |
1ab256cb | 877 | return current_buffer->name; |
b7826503 | 878 | CHECK_BUFFER (buffer); |
1ab256cb RM |
879 | return XBUFFER (buffer)->name; |
880 | } | |
881 | ||
882 | DEFUN ("buffer-file-name", Fbuffer_file_name, Sbuffer_file_name, 0, 1, 0, | |
7ee72033 MB |
883 | doc: /* Return name of file BUFFER is visiting, or nil if none. |
884 | No argument or nil as argument means use the current buffer. */) | |
885 | (buffer) | |
1ab256cb RM |
886 | register Lisp_Object buffer; |
887 | { | |
265a9e55 | 888 | if (NILP (buffer)) |
1ab256cb | 889 | return current_buffer->filename; |
b7826503 | 890 | CHECK_BUFFER (buffer); |
1ab256cb RM |
891 | return XBUFFER (buffer)->filename; |
892 | } | |
893 | ||
336cd056 RS |
894 | DEFUN ("buffer-base-buffer", Fbuffer_base_buffer, Sbuffer_base_buffer, |
895 | 0, 1, 0, | |
7ee72033 | 896 | doc: /* Return the base buffer of indirect buffer BUFFER. |
5a72efd4 LT |
897 | If BUFFER is not indirect, return nil. |
898 | BUFFER defaults to the current buffer. */) | |
7ee72033 | 899 | (buffer) |
336cd056 RS |
900 | register Lisp_Object buffer; |
901 | { | |
902 | struct buffer *base; | |
903 | Lisp_Object base_buffer; | |
904 | ||
905 | if (NILP (buffer)) | |
906 | base = current_buffer->base_buffer; | |
907 | else | |
908 | { | |
b7826503 | 909 | CHECK_BUFFER (buffer); |
336cd056 RS |
910 | base = XBUFFER (buffer)->base_buffer; |
911 | } | |
912 | ||
913 | if (! base) | |
914 | return Qnil; | |
915 | XSETBUFFER (base_buffer, base); | |
916 | return base_buffer; | |
917 | } | |
918 | ||
79aa712d | 919 | DEFUN ("buffer-local-value", Fbuffer_local_value, |
177c0ea7 | 920 | Sbuffer_local_value, 2, 2, 0, |
79aa712d RS |
921 | doc: /* Return the value of VARIABLE in BUFFER. |
922 | If VARIABLE does not have a buffer-local binding in BUFFER, the value | |
5e2ad10b JB |
923 | is the default binding of the variable. */) |
924 | (variable, buffer) | |
925 | register Lisp_Object variable; | |
79aa712d RS |
926 | register Lisp_Object buffer; |
927 | { | |
928 | register struct buffer *buf; | |
929 | register Lisp_Object result; | |
930 | ||
5e2ad10b | 931 | CHECK_SYMBOL (variable); |
ae69175b | 932 | CHECK_BUFFER (buffer); |
79aa712d RS |
933 | buf = XBUFFER (buffer); |
934 | ||
e7c10f83 | 935 | variable = indirect_variable (variable); |
0e4d0c9a | 936 | |
79aa712d | 937 | /* Look in local_var_list */ |
5e2ad10b | 938 | result = Fassoc (variable, buf->local_var_alist); |
177c0ea7 | 939 | if (NILP (result)) |
79aa712d RS |
940 | { |
941 | int offset, idx; | |
942 | int found = 0; | |
943 | ||
944 | /* Look in special slots */ | |
3ee24aec SM |
945 | /* buffer-local Lisp variables start at `undo_list', |
946 | tho only the ones from `name' on are GC'd normally. */ | |
947 | for (offset = PER_BUFFER_VAR_OFFSET (undo_list); | |
79aa712d RS |
948 | offset < sizeof (struct buffer); |
949 | /* sizeof EMACS_INT == sizeof Lisp_Object */ | |
950 | offset += (sizeof (EMACS_INT))) | |
951 | { | |
952 | idx = PER_BUFFER_IDX (offset); | |
953 | if ((idx == -1 || PER_BUFFER_VALUE_P (buf, idx)) | |
177c0ea7 | 954 | && SYMBOLP (PER_BUFFER_SYMBOL (offset)) |
5e2ad10b | 955 | && EQ (PER_BUFFER_SYMBOL (offset), variable)) |
79aa712d RS |
956 | { |
957 | result = PER_BUFFER_VALUE (buf, offset); | |
958 | found = 1; | |
959 | break; | |
960 | } | |
961 | } | |
962 | ||
963 | if (!found) | |
5e2ad10b | 964 | result = Fdefault_value (variable); |
79aa712d RS |
965 | } |
966 | else | |
f0bac7de RS |
967 | { |
968 | Lisp_Object valcontents; | |
969 | Lisp_Object current_alist_element; | |
970 | ||
971 | /* What binding is loaded right now? */ | |
5e2ad10b | 972 | valcontents = SYMBOL_VALUE (variable); |
f0bac7de RS |
973 | current_alist_element |
974 | = XCAR (XBUFFER_LOCAL_VALUE (valcontents)->cdr); | |
975 | ||
976 | /* The value of the currently loaded binding is not | |
977 | stored in it, but rather in the realvalue slot. | |
978 | Store that value into the binding it belongs to | |
979 | in case that is the one we are about to use. */ | |
980 | ||
981 | Fsetcdr (current_alist_element, | |
982 | do_symval_forwarding (XBUFFER_LOCAL_VALUE (valcontents)->realvalue)); | |
983 | ||
984 | /* Now get the (perhaps updated) value out of the binding. */ | |
985 | result = XCDR (result); | |
986 | } | |
79aa712d | 987 | |
4c4dc0b0 KS |
988 | if (!EQ (result, Qunbound)) |
989 | return result; | |
79aa712d | 990 | |
4c4dc0b0 | 991 | xsignal1 (Qvoid_variable, variable); |
79aa712d RS |
992 | } |
993 | ||
e1688f54 | 994 | /* Return an alist of the Lisp-level buffer-local bindings of |
7fa57e45 | 995 | buffer BUF. That is, don't include the variables maintained |
e1688f54 RS |
996 | in special slots in the buffer object. */ |
997 | ||
998 | static Lisp_Object | |
999 | buffer_lisp_local_variables (buf) | |
1000 | struct buffer *buf; | |
1001 | { | |
1002 | Lisp_Object result = Qnil; | |
1003 | register Lisp_Object tail; | |
1004 | for (tail = buf->local_var_alist; CONSP (tail); tail = XCDR (tail)) | |
1005 | { | |
1006 | Lisp_Object val, elt; | |
1007 | ||
1008 | elt = XCAR (tail); | |
1009 | ||
1010 | /* Reference each variable in the alist in buf. | |
1011 | If inquiring about the current buffer, this gets the current values, | |
1012 | so store them into the alist so the alist is up to date. | |
1013 | If inquiring about some other buffer, this swaps out any values | |
1014 | for that buffer, making the alist up to date automatically. */ | |
1015 | val = find_symbol_value (XCAR (elt)); | |
1016 | /* Use the current buffer value only if buf is the current buffer. */ | |
1017 | if (buf != current_buffer) | |
1018 | val = XCDR (elt); | |
1019 | ||
1020 | /* If symbol is unbound, put just the symbol in the list. */ | |
1021 | if (EQ (val, Qunbound)) | |
1022 | result = Fcons (XCAR (elt), result); | |
1023 | /* Otherwise, put (symbol . value) in the list. */ | |
1024 | else | |
1025 | result = Fcons (Fcons (XCAR (elt), val), result); | |
1026 | } | |
1027 | ||
1028 | return result; | |
1029 | } | |
1030 | ||
1ab256cb | 1031 | DEFUN ("buffer-local-variables", Fbuffer_local_variables, |
efc7e75f | 1032 | Sbuffer_local_variables, 0, 1, 0, |
7ee72033 | 1033 | doc: /* Return an alist of variables that are buffer-local in BUFFER. |
018ba359 PJ |
1034 | Most elements look like (SYMBOL . VALUE), describing one variable. |
1035 | For a symbol that is locally unbound, just the symbol appears in the value. | |
1036 | Note that storing new VALUEs in these elements doesn't change the variables. | |
7ee72033 MB |
1037 | No argument or nil as argument means use current buffer as BUFFER. */) |
1038 | (buffer) | |
1ab256cb RM |
1039 | register Lisp_Object buffer; |
1040 | { | |
1041 | register struct buffer *buf; | |
553defa4 | 1042 | register Lisp_Object result; |
1ab256cb | 1043 | |
265a9e55 | 1044 | if (NILP (buffer)) |
1ab256cb RM |
1045 | buf = current_buffer; |
1046 | else | |
1047 | { | |
b7826503 | 1048 | CHECK_BUFFER (buffer); |
1ab256cb RM |
1049 | buf = XBUFFER (buffer); |
1050 | } | |
1051 | ||
e1688f54 | 1052 | result = buffer_lisp_local_variables (buf); |
1ab256cb | 1053 | |
1ab256cb RM |
1054 | /* Add on all the variables stored in special slots. */ |
1055 | { | |
7c02e886 | 1056 | int offset, idx; |
1ab256cb | 1057 | |
3ee24aec SM |
1058 | /* buffer-local Lisp variables start at `undo_list', |
1059 | tho only the ones from `name' on are GC'd normally. */ | |
1060 | for (offset = PER_BUFFER_VAR_OFFSET (undo_list); | |
1ab256cb | 1061 | offset < sizeof (struct buffer); |
7c02e886 GM |
1062 | /* sizeof EMACS_INT == sizeof Lisp_Object */ |
1063 | offset += (sizeof (EMACS_INT))) | |
1ab256cb | 1064 | { |
7313acd0 GM |
1065 | idx = PER_BUFFER_IDX (offset); |
1066 | if ((idx == -1 || PER_BUFFER_VALUE_P (buf, idx)) | |
1067 | && SYMBOLP (PER_BUFFER_SYMBOL (offset))) | |
1068 | result = Fcons (Fcons (PER_BUFFER_SYMBOL (offset), | |
1069 | PER_BUFFER_VALUE (buf, offset)), | |
7c02e886 | 1070 | result); |
1ab256cb RM |
1071 | } |
1072 | } | |
553defa4 RS |
1073 | |
1074 | return result; | |
1ab256cb | 1075 | } |
1ab256cb RM |
1076 | \f |
1077 | DEFUN ("buffer-modified-p", Fbuffer_modified_p, Sbuffer_modified_p, | |
efc7e75f | 1078 | 0, 1, 0, |
7ee72033 MB |
1079 | doc: /* Return t if BUFFER was modified since its file was last read or saved. |
1080 | No argument or nil as argument means use current buffer as BUFFER. */) | |
1081 | (buffer) | |
1ab256cb RM |
1082 | register Lisp_Object buffer; |
1083 | { | |
1084 | register struct buffer *buf; | |
265a9e55 | 1085 | if (NILP (buffer)) |
1ab256cb RM |
1086 | buf = current_buffer; |
1087 | else | |
1088 | { | |
b7826503 | 1089 | CHECK_BUFFER (buffer); |
1ab256cb RM |
1090 | buf = XBUFFER (buffer); |
1091 | } | |
1092 | ||
336cd056 | 1093 | return BUF_SAVE_MODIFF (buf) < BUF_MODIFF (buf) ? Qt : Qnil; |
1ab256cb RM |
1094 | } |
1095 | ||
1096 | DEFUN ("set-buffer-modified-p", Fset_buffer_modified_p, Sset_buffer_modified_p, | |
efc7e75f | 1097 | 1, 1, 0, |
7ee72033 MB |
1098 | doc: /* Mark current buffer as modified or unmodified according to FLAG. |
1099 | A non-nil FLAG means mark the buffer modified. */) | |
1100 | (flag) | |
1ab256cb RM |
1101 | register Lisp_Object flag; |
1102 | { | |
1103 | register int already; | |
1104 | register Lisp_Object fn; | |
8ec01c70 | 1105 | Lisp_Object buffer, window; |
1ab256cb RM |
1106 | |
1107 | #ifdef CLASH_DETECTION | |
1108 | /* If buffer becoming modified, lock the file. | |
1109 | If buffer becoming unmodified, unlock the file. */ | |
1110 | ||
60f4dd23 | 1111 | fn = current_buffer->file_truename; |
90d456d2 KH |
1112 | /* Test buffer-file-name so that binding it to nil is effective. */ |
1113 | if (!NILP (fn) && ! NILP (current_buffer->filename)) | |
1ab256cb | 1114 | { |
336cd056 | 1115 | already = SAVE_MODIFF < MODIFF; |
265a9e55 | 1116 | if (!already && !NILP (flag)) |
1ab256cb | 1117 | lock_file (fn); |
265a9e55 | 1118 | else if (already && NILP (flag)) |
1ab256cb RM |
1119 | unlock_file (fn); |
1120 | } | |
1121 | #endif /* CLASH_DETECTION */ | |
1122 | ||
336cd056 | 1123 | SAVE_MODIFF = NILP (flag) ? MODIFF : 0; |
177c0ea7 | 1124 | |
8ec01c70 GM |
1125 | /* Set update_mode_lines only if buffer is displayed in some window. |
1126 | Packages like jit-lock or lazy-lock preserve a buffer's modified | |
1127 | state by recording/restoring the state around blocks of code. | |
1128 | Setting update_mode_lines makes redisplay consider all windows | |
1129 | (on all frames). Stealth fontification of buffers not displayed | |
1130 | would incur additional redisplay costs if we'd set | |
1131 | update_modes_lines unconditionally. | |
1132 | ||
1133 | Ideally, I think there should be another mechanism for fontifying | |
1134 | buffers without "modifying" buffers, or redisplay should be | |
1135 | smarter about updating the `*' in mode lines. --gerd */ | |
1136 | XSETBUFFER (buffer, current_buffer); | |
1137 | window = Fget_buffer_window (buffer, Qt); | |
1138 | if (WINDOWP (window)) | |
d57b83b3 GM |
1139 | { |
1140 | ++update_mode_lines; | |
1141 | current_buffer->prevent_redisplay_optimizations_p = 1; | |
1142 | } | |
177c0ea7 | 1143 | |
1ab256cb RM |
1144 | return flag; |
1145 | } | |
1146 | ||
a8c21b48 GM |
1147 | DEFUN ("restore-buffer-modified-p", Frestore_buffer_modified_p, |
1148 | Srestore_buffer_modified_p, 1, 1, 0, | |
42f47086 | 1149 | doc: /* Like `set-buffer-modified-p', with a difference concerning redisplay. |
018ba359 | 1150 | It is not ensured that mode lines will be updated to show the modified |
7ee72033 MB |
1151 | state of the current buffer. Use with care. */) |
1152 | (flag) | |
a8c21b48 GM |
1153 | Lisp_Object flag; |
1154 | { | |
1155 | #ifdef CLASH_DETECTION | |
1156 | Lisp_Object fn; | |
177c0ea7 | 1157 | |
a8c21b48 GM |
1158 | /* If buffer becoming modified, lock the file. |
1159 | If buffer becoming unmodified, unlock the file. */ | |
1160 | ||
1161 | fn = current_buffer->file_truename; | |
1162 | /* Test buffer-file-name so that binding it to nil is effective. */ | |
1163 | if (!NILP (fn) && ! NILP (current_buffer->filename)) | |
1164 | { | |
1165 | int already = SAVE_MODIFF < MODIFF; | |
1166 | if (!already && !NILP (flag)) | |
1167 | lock_file (fn); | |
1168 | else if (already && NILP (flag)) | |
1169 | unlock_file (fn); | |
1170 | } | |
1171 | #endif /* CLASH_DETECTION */ | |
177c0ea7 | 1172 | |
a8c21b48 GM |
1173 | SAVE_MODIFF = NILP (flag) ? MODIFF : 0; |
1174 | return flag; | |
1175 | } | |
1176 | ||
1ab256cb | 1177 | DEFUN ("buffer-modified-tick", Fbuffer_modified_tick, Sbuffer_modified_tick, |
efc7e75f | 1178 | 0, 1, 0, |
7ee72033 | 1179 | doc: /* Return BUFFER's tick counter, incremented for each change in text. |
2f064abf JB |
1180 | Each buffer has a tick counter which is incremented each time the |
1181 | text in that buffer is changed. It wraps around occasionally. | |
7ee72033 MB |
1182 | No argument or nil as argument means use current buffer as BUFFER. */) |
1183 | (buffer) | |
1ab256cb RM |
1184 | register Lisp_Object buffer; |
1185 | { | |
1186 | register struct buffer *buf; | |
265a9e55 | 1187 | if (NILP (buffer)) |
1ab256cb RM |
1188 | buf = current_buffer; |
1189 | else | |
1190 | { | |
b7826503 | 1191 | CHECK_BUFFER (buffer); |
1ab256cb RM |
1192 | buf = XBUFFER (buffer); |
1193 | } | |
1194 | ||
1195 | return make_number (BUF_MODIFF (buf)); | |
1196 | } | |
3e145152 CY |
1197 | |
1198 | DEFUN ("buffer-chars-modified-tick", Fbuffer_chars_modified_tick, | |
1199 | Sbuffer_chars_modified_tick, 0, 1, 0, | |
1200 | doc: /* Return BUFFER's character-change tick counter. | |
1201 | Each buffer has a character-change tick counter, which is set to the | |
1202 | value of the buffer's tick counter \(see `buffer-modified-tick'), each | |
1203 | time text in that buffer is inserted or deleted. By comparing the | |
12bd42be | 1204 | values returned by two individual calls of `buffer-chars-modified-tick', |
3e145152 CY |
1205 | you can tell whether a character change occurred in that buffer in |
1206 | between these calls. No argument or nil as argument means use current | |
1207 | buffer as BUFFER. */) | |
1208 | (buffer) | |
1209 | register Lisp_Object buffer; | |
1210 | { | |
1211 | register struct buffer *buf; | |
1212 | if (NILP (buffer)) | |
1213 | buf = current_buffer; | |
1214 | else | |
1215 | { | |
1216 | CHECK_BUFFER (buffer); | |
1217 | buf = XBUFFER (buffer); | |
1218 | } | |
1219 | ||
1220 | return make_number (BUF_CHARS_MODIFF (buf)); | |
1221 | } | |
1ab256cb | 1222 | \f |
01050cb5 | 1223 | DEFUN ("rename-buffer", Frename_buffer, Srename_buffer, 1, 2, |
c7d97628 JL |
1224 | "(list (read-string \"Rename buffer (to new name): \" \ |
1225 | nil 'buffer-name-history (buffer-name (current-buffer))) \ | |
1226 | current-prefix-arg)", | |
7ee72033 | 1227 | doc: /* Change current buffer's name to NEWNAME (a string). |
018ba359 PJ |
1228 | If second arg UNIQUE is nil or omitted, it is an error if a |
1229 | buffer named NEWNAME already exists. | |
1230 | If UNIQUE is non-nil, come up with a new name using | |
1231 | `generate-new-buffer-name'. | |
1232 | Interactively, you can set UNIQUE with a prefix argument. | |
1233 | We return the name we actually gave the buffer. | |
7ee72033 MB |
1234 | This does not change the name of the visited file (if any). */) |
1235 | (newname, unique) | |
489c043a | 1236 | register Lisp_Object newname, unique; |
1ab256cb RM |
1237 | { |
1238 | register Lisp_Object tem, buf; | |
1239 | ||
b7826503 | 1240 | CHECK_STRING (newname); |
d59698c4 | 1241 | |
d5db4077 | 1242 | if (SCHARS (newname) == 0) |
d59698c4 RS |
1243 | error ("Empty string is invalid as a buffer name"); |
1244 | ||
489c043a | 1245 | tem = Fget_buffer (newname); |
265a9e55 | 1246 | if (!NILP (tem)) |
01050cb5 | 1247 | { |
8801a864 KR |
1248 | /* Don't short-circuit if UNIQUE is t. That is a useful way to |
1249 | rename the buffer automatically so you can create another | |
1250 | with the original name. It makes UNIQUE equivalent to | |
1251 | (rename-buffer (generate-new-buffer-name NEWNAME)). */ | |
1252 | if (NILP (unique) && XBUFFER (tem) == current_buffer) | |
1253 | return current_buffer->name; | |
3bd779aa | 1254 | if (!NILP (unique)) |
489c043a | 1255 | newname = Fgenerate_new_buffer_name (newname, current_buffer->name); |
01050cb5 | 1256 | else |
d5db4077 | 1257 | error ("Buffer name `%s' is in use", SDATA (newname)); |
01050cb5 | 1258 | } |
1ab256cb | 1259 | |
489c043a | 1260 | current_buffer->name = newname; |
76f590d7 JB |
1261 | |
1262 | /* Catch redisplay's attention. Unless we do this, the mode lines for | |
1263 | any windows displaying current_buffer will stay unchanged. */ | |
1264 | update_mode_lines++; | |
1265 | ||
67180c6a | 1266 | XSETBUFFER (buf, current_buffer); |
489c043a | 1267 | Fsetcar (Frassq (buf, Vbuffer_alist), newname); |
cf058e49 KH |
1268 | if (NILP (current_buffer->filename) |
1269 | && !NILP (current_buffer->auto_save_file_name)) | |
1ab256cb | 1270 | call0 (intern ("rename-auto-save-file")); |
fb5eba9c RS |
1271 | /* Refetch since that last call may have done GC. */ |
1272 | return current_buffer->name; | |
1ab256cb RM |
1273 | } |
1274 | ||
773fbdb9 | 1275 | DEFUN ("other-buffer", Fother_buffer, Sother_buffer, 0, 3, 0, |
7ee72033 | 1276 | doc: /* Return most recently selected buffer other than BUFFER. |
018ba359 PJ |
1277 | Buffers not visible in windows are preferred to visible buffers, |
1278 | unless optional second argument VISIBLE-OK is non-nil. | |
1279 | If the optional third argument FRAME is non-nil, use that frame's | |
1280 | buffer list instead of the selected frame's buffer list. | |
1281 | If no other buffer exists, the buffer `*scratch*' is returned. | |
7ee72033 MB |
1282 | If BUFFER is omitted or nil, some interesting buffer is returned. */) |
1283 | (buffer, visible_ok, frame) | |
773fbdb9 | 1284 | register Lisp_Object buffer, visible_ok, frame; |
1ab256cb | 1285 | { |
89132f25 | 1286 | Lisp_Object Fset_buffer_major_mode (); |
7962a441 | 1287 | register Lisp_Object tail, buf, notsogood, tem, pred, add_ons; |
1ab256cb RM |
1288 | notsogood = Qnil; |
1289 | ||
773fbdb9 | 1290 | if (NILP (frame)) |
9ba9623d | 1291 | frame = selected_frame; |
773fbdb9 | 1292 | |
7962a441 | 1293 | tail = Vbuffer_alist; |
773fbdb9 | 1294 | pred = frame_buffer_predicate (frame); |
7962a441 RS |
1295 | |
1296 | /* Consider buffers that have been seen in the selected frame | |
1297 | before other buffers. */ | |
177c0ea7 | 1298 | |
773fbdb9 | 1299 | tem = frame_buffer_list (frame); |
7962a441 RS |
1300 | add_ons = Qnil; |
1301 | while (CONSP (tem)) | |
1302 | { | |
7539e11f KR |
1303 | if (BUFFERP (XCAR (tem))) |
1304 | add_ons = Fcons (Fcons (Qnil, XCAR (tem)), add_ons); | |
1305 | tem = XCDR (tem); | |
7962a441 RS |
1306 | } |
1307 | tail = nconc2 (Fnreverse (add_ons), tail); | |
1308 | ||
6d70a280 | 1309 | for (; CONSP (tail); tail = XCDR (tail)) |
1ab256cb | 1310 | { |
6d70a280 | 1311 | buf = Fcdr (XCAR (tail)); |
1ab256cb RM |
1312 | if (EQ (buf, buffer)) |
1313 | continue; | |
6b61353c KH |
1314 | if (NILP (buf)) |
1315 | continue; | |
1316 | if (NILP (XBUFFER (buf)->name)) | |
1317 | continue; | |
10ceceb8 | 1318 | if (SREF (XBUFFER (buf)->name, 0) == ' ') |
1ab256cb | 1319 | continue; |
04ae1b48 RS |
1320 | /* If the selected frame has a buffer_predicate, |
1321 | disregard buffers that don't fit the predicate. */ | |
7962a441 | 1322 | if (!NILP (pred)) |
04ae1b48 | 1323 | { |
7962a441 | 1324 | tem = call1 (pred, buf); |
04ae1b48 RS |
1325 | if (NILP (tem)) |
1326 | continue; | |
1327 | } | |
04ae1b48 | 1328 | |
a0ebb746 | 1329 | if (NILP (visible_ok)) |
66ffe51c | 1330 | tem = Fget_buffer_window (buf, Qvisible); |
a0ebb746 JB |
1331 | else |
1332 | tem = Qnil; | |
265a9e55 | 1333 | if (NILP (tem)) |
1ab256cb | 1334 | return buf; |
265a9e55 | 1335 | if (NILP (notsogood)) |
1ab256cb RM |
1336 | notsogood = buf; |
1337 | } | |
265a9e55 | 1338 | if (!NILP (notsogood)) |
1ab256cb | 1339 | return notsogood; |
dba1a30a GM |
1340 | buf = Fget_buffer (build_string ("*scratch*")); |
1341 | if (NILP (buf)) | |
1342 | { | |
1343 | buf = Fget_buffer_create (build_string ("*scratch*")); | |
1344 | Fset_buffer_major_mode (buf); | |
1345 | } | |
89132f25 | 1346 | return buf; |
1ab256cb RM |
1347 | } |
1348 | \f | |
1ab256cb RM |
1349 | DEFUN ("buffer-enable-undo", Fbuffer_enable_undo, Sbuffer_enable_undo, |
1350 | 0, 1, "", | |
7ee72033 MB |
1351 | doc: /* Start keeping undo information for buffer BUFFER. |
1352 | No argument or nil as argument means do this for the current buffer. */) | |
1353 | (buffer) | |
ffd56f97 | 1354 | register Lisp_Object buffer; |
1ab256cb | 1355 | { |
ffd56f97 | 1356 | Lisp_Object real_buffer; |
1ab256cb | 1357 | |
ffd56f97 | 1358 | if (NILP (buffer)) |
67180c6a | 1359 | XSETBUFFER (real_buffer, current_buffer); |
1ab256cb RM |
1360 | else |
1361 | { | |
ffd56f97 JB |
1362 | real_buffer = Fget_buffer (buffer); |
1363 | if (NILP (real_buffer)) | |
1364 | nsberror (buffer); | |
1ab256cb RM |
1365 | } |
1366 | ||
ffd56f97 JB |
1367 | if (EQ (XBUFFER (real_buffer)->undo_list, Qt)) |
1368 | XBUFFER (real_buffer)->undo_list = Qnil; | |
1ab256cb RM |
1369 | |
1370 | return Qnil; | |
1371 | } | |
1372 | ||
1373 | /* | |
1374 | DEFVAR_LISP ("kill-buffer-hook", no_cell, "\ | |
1375 | Hook to be run (by `run-hooks', which see) when a buffer is killed.\n\ | |
1376 | The buffer being killed will be current while the hook is running.\n\ | |
1377 | See `kill-buffer'." | |
1378 | */ | |
1379 | DEFUN ("kill-buffer", Fkill_buffer, Skill_buffer, 1, 1, "bKill buffer: ", | |
7ee72033 | 1380 | doc: /* Kill the buffer BUFFER. |
f6e22881 JB |
1381 | The argument may be a buffer or the name of a buffer. |
1382 | With a nil argument, kill the current buffer. | |
018ba359 | 1383 | |
f6e22881 | 1384 | Value is t if the buffer is actually killed, nil otherwise. |
018ba359 | 1385 | |
f6e22881 JB |
1386 | The functions in `kill-buffer-query-functions' are called with BUFFER as |
1387 | the current buffer. If any of them returns nil, the buffer is not killed. | |
1388 | ||
1389 | The hook `kill-buffer-hook' is run before the buffer is actually killed. | |
1390 | The buffer being killed will be current while the hook is running. | |
018ba359 PJ |
1391 | |
1392 | Any processes that have this buffer as the `process-buffer' are killed | |
7ee72033 MB |
1393 | with SIGHUP. */) |
1394 | (buffer) | |
a25f13ae | 1395 | Lisp_Object buffer; |
1ab256cb RM |
1396 | { |
1397 | Lisp_Object buf; | |
1398 | register struct buffer *b; | |
1399 | register Lisp_Object tem; | |
1400 | register struct Lisp_Marker *m; | |
6af718a4 | 1401 | struct gcpro gcpro1; |
1ab256cb | 1402 | |
a25f13ae | 1403 | if (NILP (buffer)) |
1ab256cb RM |
1404 | buf = Fcurrent_buffer (); |
1405 | else | |
a25f13ae | 1406 | buf = Fget_buffer (buffer); |
265a9e55 | 1407 | if (NILP (buf)) |
a25f13ae | 1408 | nsberror (buffer); |
1ab256cb RM |
1409 | |
1410 | b = XBUFFER (buf); | |
1411 | ||
4a4a9db5 KH |
1412 | /* Avoid trouble for buffer already dead. */ |
1413 | if (NILP (b->name)) | |
1414 | return Qnil; | |
1415 | ||
1ab256cb | 1416 | /* Query if the buffer is still modified. */ |
265a9e55 | 1417 | if (INTERACTIVE && !NILP (b->filename) |
336cd056 | 1418 | && BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) |
1ab256cb | 1419 | { |
a25f13ae | 1420 | GCPRO1 (buf); |
5c4930b0 RS |
1421 | tem = do_yes_or_no_p (format2 ("Buffer %s modified; kill anyway? ", |
1422 | b->name, make_number (0))); | |
1ab256cb | 1423 | UNGCPRO; |
265a9e55 | 1424 | if (NILP (tem)) |
1ab256cb RM |
1425 | return Qnil; |
1426 | } | |
1427 | ||
dcdffbf6 | 1428 | /* Run hooks with the buffer to be killed the current buffer. */ |
1ab256cb | 1429 | { |
aed13378 | 1430 | int count = SPECPDL_INDEX (); |
5b20caf0 | 1431 | Lisp_Object arglist[1]; |
1ab256cb RM |
1432 | |
1433 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1434 | set_buffer_internal (b); | |
dcdffbf6 RS |
1435 | |
1436 | /* First run the query functions; if any query is answered no, | |
1437 | don't kill the buffer. */ | |
5b20caf0 | 1438 | arglist[0] = Qkill_buffer_query_functions; |
09706e1f KR |
1439 | tem = Frun_hook_with_args_until_failure (1, arglist); |
1440 | if (NILP (tem)) | |
5b20caf0 | 1441 | return unbind_to (count, Qnil); |
dcdffbf6 RS |
1442 | |
1443 | /* Then run the hooks. */ | |
f1597a3a | 1444 | Frun_hooks (1, &Qkill_buffer_hook); |
1ab256cb RM |
1445 | unbind_to (count, Qnil); |
1446 | } | |
1447 | ||
1448 | /* We have no more questions to ask. Verify that it is valid | |
1449 | to kill the buffer. This must be done after the questions | |
1450 | since anything can happen within do_yes_or_no_p. */ | |
1451 | ||
1452 | /* Don't kill the minibuffer now current. */ | |
1453 | if (EQ (buf, XWINDOW (minibuf_window)->buffer)) | |
1454 | return Qnil; | |
1455 | ||
265a9e55 | 1456 | if (NILP (b->name)) |
1ab256cb RM |
1457 | return Qnil; |
1458 | ||
336cd056 RS |
1459 | /* When we kill a base buffer, kill all its indirect buffers. |
1460 | We do it at this stage so nothing terrible happens if they | |
1461 | ask questions or their hooks get errors. */ | |
1462 | if (! b->base_buffer) | |
1463 | { | |
1464 | struct buffer *other; | |
1465 | ||
1466 | GCPRO1 (buf); | |
1467 | ||
1468 | for (other = all_buffers; other; other = other->next) | |
4a4a9db5 KH |
1469 | /* all_buffers contains dead buffers too; |
1470 | don't re-kill them. */ | |
1471 | if (other->base_buffer == b && !NILP (other->name)) | |
336cd056 RS |
1472 | { |
1473 | Lisp_Object buf; | |
1474 | XSETBUFFER (buf, other); | |
1475 | Fkill_buffer (buf); | |
1476 | } | |
1477 | ||
1478 | UNGCPRO; | |
1479 | } | |
177c0ea7 | 1480 | |
1ab256cb RM |
1481 | /* Make this buffer not be current. |
1482 | In the process, notice if this is the sole visible buffer | |
1483 | and give up if so. */ | |
1484 | if (b == current_buffer) | |
1485 | { | |
773fbdb9 | 1486 | tem = Fother_buffer (buf, Qnil, Qnil); |
1ab256cb RM |
1487 | Fset_buffer (tem); |
1488 | if (b == current_buffer) | |
1489 | return Qnil; | |
1490 | } | |
1491 | ||
77270fac GM |
1492 | /* Notice if the buffer to kill is the sole visible buffer |
1493 | when we're currently in the mini-buffer, and give up if so. */ | |
1494 | XSETBUFFER (tem, current_buffer); | |
1495 | if (EQ (tem, XWINDOW (minibuf_window)->buffer)) | |
1496 | { | |
1497 | tem = Fother_buffer (buf, Qnil, Qnil); | |
77270fac GM |
1498 | if (EQ (buf, tem)) |
1499 | return Qnil; | |
1500 | } | |
1501 | ||
1ab256cb RM |
1502 | /* Now there is no question: we can kill the buffer. */ |
1503 | ||
1504 | #ifdef CLASH_DETECTION | |
1505 | /* Unlock this buffer's file, if it is locked. */ | |
1506 | unlock_buffer (b); | |
1507 | #endif /* CLASH_DETECTION */ | |
1508 | ||
49da74e6 | 1509 | GCPRO1 (buf); |
1ab256cb | 1510 | kill_buffer_processes (buf); |
49da74e6 KS |
1511 | UNGCPRO; |
1512 | ||
1513 | /* Killing buffer processes may run sentinels which may | |
1514 | have called kill-buffer. */ | |
1515 | ||
1516 | if (NILP (b->name)) | |
1517 | return Qnil; | |
1518 | ||
b93fb365 | 1519 | clear_charpos_cache (b); |
1ab256cb RM |
1520 | |
1521 | tem = Vinhibit_quit; | |
1522 | Vinhibit_quit = Qt; | |
00550f94 | 1523 | replace_buffer_in_all_windows (buf); |
b26dd9cb | 1524 | Vbuffer_alist = Fdelq (Frassq (buf, Vbuffer_alist), Vbuffer_alist); |
7962a441 | 1525 | frames_discard_buffer (buf); |
1ab256cb RM |
1526 | Vinhibit_quit = tem; |
1527 | ||
9cf712eb RS |
1528 | /* Delete any auto-save file, if we saved it in this session. |
1529 | But not if the buffer is modified. */ | |
a7a60ce9 | 1530 | if (STRINGP (b->auto_save_file_name) |
e95a0b39 | 1531 | && b->auto_save_modified != 0 |
9cf712eb | 1532 | && BUF_SAVE_MODIFF (b) < b->auto_save_modified |
6b61353c KH |
1533 | && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b) |
1534 | && NILP (Fsymbol_value (intern ("auto-save-visited-file-name")))) | |
1ab256cb RM |
1535 | { |
1536 | Lisp_Object tem; | |
1537 | tem = Fsymbol_value (intern ("delete-auto-save-files")); | |
265a9e55 | 1538 | if (! NILP (tem)) |
cbb6a418 | 1539 | internal_delete_file (b->auto_save_file_name); |
1ab256cb RM |
1540 | } |
1541 | ||
4a4a9db5 KH |
1542 | if (b->base_buffer) |
1543 | { | |
1544 | /* Unchain all markers that belong to this indirect buffer. | |
1545 | Don't unchain the markers that belong to the base buffer | |
1546 | or its other indirect buffers. */ | |
65745fad | 1547 | for (m = BUF_MARKERS (b); m; ) |
4a4a9db5 | 1548 | { |
65745fad | 1549 | struct Lisp_Marker *next = m->next; |
4a4a9db5 | 1550 | if (m->buffer == b) |
65745fad SM |
1551 | unchain_marker (m); |
1552 | m = next; | |
4a4a9db5 KH |
1553 | } |
1554 | } | |
1555 | else | |
1ab256cb | 1556 | { |
4a4a9db5 | 1557 | /* Unchain all markers of this buffer and its indirect buffers. |
336cd056 | 1558 | and leave them pointing nowhere. */ |
65745fad | 1559 | for (m = BUF_MARKERS (b); m; ) |
336cd056 | 1560 | { |
65745fad | 1561 | struct Lisp_Marker *next = m->next; |
336cd056 | 1562 | m->buffer = 0; |
65745fad SM |
1563 | m->next = NULL; |
1564 | m = next; | |
336cd056 | 1565 | } |
65745fad | 1566 | BUF_MARKERS (b) = NULL; |
336cd056 | 1567 | BUF_INTERVALS (b) = NULL_INTERVAL; |
336cd056 RS |
1568 | |
1569 | /* Perhaps we should explicitly free the interval tree here... */ | |
1570 | } | |
33f7013e | 1571 | |
2f3f993b RS |
1572 | /* Reset the local variables, so that this buffer's local values |
1573 | won't be protected from GC. They would be protected | |
1574 | if they happened to remain encached in their symbols. | |
1575 | This gets rid of them for certain. */ | |
1576 | swap_out_buffer_local_variables (b); | |
13de9290 | 1577 | reset_buffer_local_variables (b, 1); |
2f3f993b | 1578 | |
1ab256cb | 1579 | b->name = Qnil; |
336cd056 | 1580 | |
9ac0d9e0 | 1581 | BLOCK_INPUT; |
336cd056 | 1582 | if (! b->base_buffer) |
b86af064 | 1583 | free_buffer_text (b); |
336cd056 | 1584 | |
28e969dd JB |
1585 | if (b->newline_cache) |
1586 | { | |
1587 | free_region_cache (b->newline_cache); | |
1588 | b->newline_cache = 0; | |
1589 | } | |
1590 | if (b->width_run_cache) | |
1591 | { | |
1592 | free_region_cache (b->width_run_cache); | |
1593 | b->width_run_cache = 0; | |
1594 | } | |
1595 | b->width_table = Qnil; | |
9ac0d9e0 | 1596 | UNBLOCK_INPUT; |
1ab256cb RM |
1597 | b->undo_list = Qnil; |
1598 | ||
1599 | return Qt; | |
1600 | } | |
1601 | \f | |
36a8c287 JB |
1602 | /* Move the assoc for buffer BUF to the front of buffer-alist. Since |
1603 | we do this each time BUF is selected visibly, the more recently | |
1604 | selected buffers are always closer to the front of the list. This | |
1605 | means that other_buffer is more likely to choose a relevant buffer. */ | |
1ab256cb | 1606 | |
01136e9b | 1607 | void |
1ab256cb RM |
1608 | record_buffer (buf) |
1609 | Lisp_Object buf; | |
1610 | { | |
1611 | register Lisp_Object link, prev; | |
773fbdb9 | 1612 | Lisp_Object frame; |
9ba9623d | 1613 | frame = selected_frame; |
1ab256cb RM |
1614 | |
1615 | prev = Qnil; | |
7539e11f | 1616 | for (link = Vbuffer_alist; CONSP (link); link = XCDR (link)) |
1ab256cb | 1617 | { |
7539e11f | 1618 | if (EQ (XCDR (XCAR (link)), buf)) |
1ab256cb RM |
1619 | break; |
1620 | prev = link; | |
1621 | } | |
1622 | ||
36a8c287 JB |
1623 | /* Effectively do Vbuffer_alist = Fdelq (link, Vbuffer_alist); |
1624 | we cannot use Fdelq itself here because it allows quitting. */ | |
1ab256cb | 1625 | |
265a9e55 | 1626 | if (NILP (prev)) |
7539e11f | 1627 | Vbuffer_alist = XCDR (Vbuffer_alist); |
1ab256cb | 1628 | else |
f3fbd155 | 1629 | XSETCDR (prev, XCDR (XCDR (prev))); |
177c0ea7 | 1630 | |
f3fbd155 | 1631 | XSETCDR (link, Vbuffer_alist); |
1ab256cb | 1632 | Vbuffer_alist = link; |
7962a441 | 1633 | |
a18b8cb5 | 1634 | /* Effectively do a delq on buried_buffer_list. */ |
7723e095 | 1635 | |
a18b8cb5 KL |
1636 | prev = Qnil; |
1637 | for (link = XFRAME (frame)->buried_buffer_list; CONSP (link); | |
1638 | link = XCDR (link)) | |
1639 | { | |
1640 | if (EQ (XCAR (link), buf)) | |
1641 | { | |
1642 | if (NILP (prev)) | |
1643 | XFRAME (frame)->buried_buffer_list = XCDR (link); | |
1644 | else | |
1645 | XSETCDR (prev, XCDR (XCDR (prev))); | |
1646 | break; | |
1647 | } | |
1648 | prev = link; | |
1649 | } | |
1650 | ||
7962a441 RS |
1651 | /* Now move this buffer to the front of frame_buffer_list also. */ |
1652 | ||
1653 | prev = Qnil; | |
773fbdb9 | 1654 | for (link = frame_buffer_list (frame); CONSP (link); |
7539e11f | 1655 | link = XCDR (link)) |
7962a441 | 1656 | { |
7539e11f | 1657 | if (EQ (XCAR (link), buf)) |
7962a441 RS |
1658 | break; |
1659 | prev = link; | |
1660 | } | |
1661 | ||
1662 | /* Effectively do delq. */ | |
1663 | ||
1664 | if (CONSP (link)) | |
1665 | { | |
1666 | if (NILP (prev)) | |
773fbdb9 | 1667 | set_frame_buffer_list (frame, |
7539e11f | 1668 | XCDR (frame_buffer_list (frame))); |
7962a441 | 1669 | else |
f3fbd155 | 1670 | XSETCDR (prev, XCDR (XCDR (prev))); |
177c0ea7 | 1671 | |
f3fbd155 | 1672 | XSETCDR (link, frame_buffer_list (frame)); |
773fbdb9 | 1673 | set_frame_buffer_list (frame, link); |
7962a441 RS |
1674 | } |
1675 | else | |
773fbdb9 | 1676 | set_frame_buffer_list (frame, Fcons (buf, frame_buffer_list (frame))); |
1ab256cb RM |
1677 | } |
1678 | ||
a9ee7a59 | 1679 | DEFUN ("set-buffer-major-mode", Fset_buffer_major_mode, Sset_buffer_major_mode, 1, 1, 0, |
7ee72033 | 1680 | doc: /* Set an appropriate major mode for BUFFER. |
864b90c9 | 1681 | For the *scratch* buffer, use `initial-major-mode', otherwise choose a mode |
71a0f2c6 | 1682 | according to `default-major-mode'. |
018ba359 | 1683 | Use this function before selecting the buffer, since it may need to inspect |
7ee72033 MB |
1684 | the current buffer's major mode. */) |
1685 | (buffer) | |
a2428fa2 | 1686 | Lisp_Object buffer; |
a9ee7a59 KH |
1687 | { |
1688 | int count; | |
1689 | Lisp_Object function; | |
1690 | ||
ea4fddd8 JB |
1691 | CHECK_BUFFER (buffer); |
1692 | ||
71a0f2c6 | 1693 | if (STRINGP (XBUFFER (buffer)->name) |
d5db4077 | 1694 | && strcmp (SDATA (XBUFFER (buffer)->name), "*scratch*") == 0) |
71a0f2c6 GM |
1695 | function = find_symbol_value (intern ("initial-major-mode")); |
1696 | else | |
1697 | { | |
1698 | function = buffer_defaults.major_mode; | |
1699 | if (NILP (function) | |
1700 | && NILP (Fget (current_buffer->major_mode, Qmode_class))) | |
1701 | function = current_buffer->major_mode; | |
1702 | } | |
177c0ea7 | 1703 | |
48265e61 DL |
1704 | if (NILP (function) || EQ (function, Qfundamental_mode)) |
1705 | return Qnil; | |
1706 | ||
aed13378 | 1707 | count = SPECPDL_INDEX (); |
a9ee7a59 | 1708 | |
48265e61 DL |
1709 | /* To select a nonfundamental mode, |
1710 | select the buffer temporarily and then call the mode function. */ | |
a9ee7a59 KH |
1711 | |
1712 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1713 | ||
a2428fa2 | 1714 | Fset_buffer (buffer); |
48265e61 | 1715 | call0 (function); |
a9ee7a59 KH |
1716 | |
1717 | return unbind_to (count, Qnil); | |
1718 | } | |
1719 | ||
2594e0fd RS |
1720 | /* If switching buffers in WINDOW would be an error, return |
1721 | a C string saying what the error would be. */ | |
1722 | ||
1723 | char * | |
1724 | no_switch_window (window) | |
1725 | Lisp_Object window; | |
1ab256cb | 1726 | { |
1ab256cb | 1727 | Lisp_Object tem; |
2594e0fd RS |
1728 | if (EQ (minibuf_window, window)) |
1729 | return "Cannot switch buffers in minibuffer window"; | |
1730 | tem = Fwindow_dedicated_p (window); | |
c01d0677 | 1731 | if (EQ (tem, Qt)) |
2594e0fd RS |
1732 | return "Cannot switch buffers in a dedicated window"; |
1733 | return NULL; | |
1734 | } | |
1735 | ||
1736 | /* Switch to buffer BUFFER in the selected window. | |
1737 | If NORECORD is non-nil, don't call record_buffer. */ | |
1738 | ||
1739 | Lisp_Object | |
1740 | switch_to_buffer_1 (buffer, norecord) | |
1741 | Lisp_Object buffer, norecord; | |
1742 | { | |
1743 | register Lisp_Object buf; | |
1ab256cb | 1744 | |
a25f13ae | 1745 | if (NILP (buffer)) |
773fbdb9 | 1746 | buf = Fother_buffer (Fcurrent_buffer (), Qnil, Qnil); |
1ab256cb | 1747 | else |
a9ee7a59 | 1748 | { |
a25f13ae | 1749 | buf = Fget_buffer (buffer); |
a9ee7a59 KH |
1750 | if (NILP (buf)) |
1751 | { | |
a25f13ae | 1752 | buf = Fget_buffer_create (buffer); |
a9ee7a59 KH |
1753 | Fset_buffer_major_mode (buf); |
1754 | } | |
1755 | } | |
1ab256cb | 1756 | Fset_buffer (buf); |
265a9e55 | 1757 | if (NILP (norecord)) |
1ab256cb RM |
1758 | record_buffer (buf); |
1759 | ||
1760 | Fset_window_buffer (EQ (selected_window, minibuf_window) | |
5fcd022d JB |
1761 | ? Fnext_window (minibuf_window, Qnil, Qnil) |
1762 | : selected_window, | |
2ad8731a | 1763 | buf, Qnil); |
1ab256cb | 1764 | |
cd0c235a | 1765 | return buf; |
1ab256cb RM |
1766 | } |
1767 | ||
88970542 JL |
1768 | DEFUN ("switch-to-buffer", Fswitch_to_buffer, Sswitch_to_buffer, 1, 2, |
1769 | "(list (read-buffer-to-switch \"Switch to buffer: \"))", | |
7ee72033 | 1770 | doc: /* Select buffer BUFFER in the current window. |
a6dced2a LT |
1771 | If BUFFER does not identify an existing buffer, |
1772 | then this function creates a buffer with that name. | |
1773 | ||
1774 | When called from Lisp, BUFFER may be a buffer, a string \(a buffer name), | |
1775 | or nil. If BUFFER is nil, then this function chooses a buffer | |
1776 | using `other-buffer'. | |
018ba359 PJ |
1777 | Optional second arg NORECORD non-nil means |
1778 | do not put this buffer at the front of the list of recently selected ones. | |
a6dced2a | 1779 | This function returns the buffer it switched to. |
018ba359 PJ |
1780 | |
1781 | WARNING: This is NOT the way to work on another buffer temporarily | |
1782 | within a Lisp program! Use `set-buffer' instead. That avoids messing with | |
7ee72033 MB |
1783 | the window-buffer correspondences. */) |
1784 | (buffer, norecord) | |
2594e0fd RS |
1785 | Lisp_Object buffer, norecord; |
1786 | { | |
1787 | char *err; | |
1788 | ||
27c6b98e | 1789 | if (EQ (buffer, Fwindow_buffer (selected_window))) |
fab45703 | 1790 | { |
611ac521 RS |
1791 | /* Basically a NOP. Avoid signalling an error in the case where |
1792 | the selected window is dedicated, or a minibuffer. */ | |
1793 | ||
1794 | /* But do put this buffer at the front of the buffer list, | |
1795 | unless that has been inhibited. Note that even if | |
1796 | BUFFER is at the front of the main buffer-list already, | |
1797 | we still want to move it to the front of the frame's buffer list. */ | |
1798 | if (NILP (norecord)) | |
fab45703 | 1799 | record_buffer (buffer); |
fab45703 NR |
1800 | return Fset_buffer (buffer); |
1801 | } | |
27c6b98e | 1802 | |
2594e0fd | 1803 | err = no_switch_window (selected_window); |
1c55ebd1 SM |
1804 | if (err) |
1805 | /* If can't display in current window, let pop-to-buffer | |
1806 | try some other window. */ | |
1807 | return call3 (intern ("pop-to-buffer"), buffer, Qnil, norecord); | |
2594e0fd RS |
1808 | |
1809 | return switch_to_buffer_1 (buffer, norecord); | |
1810 | } | |
1811 | ||
cd0c235a | 1812 | DEFUN ("pop-to-buffer", Fpop_to_buffer, Spop_to_buffer, 1, 3, 0, |
7ee72033 | 1813 | doc: /* Select buffer BUFFER in some window, preferably a different one. |
a6dced2a LT |
1814 | BUFFER may be a buffer, a string \(a buffer name), or nil. |
1815 | If BUFFER is a string which is not the name of an existing buffer, | |
1816 | then this function creates a buffer with that name. | |
1817 | If BUFFER is nil, then it chooses some other buffer. | |
018ba359 | 1818 | If `pop-up-windows' is non-nil, windows can be split to do this. |
e198ba87 | 1819 | If optional second arg OTHER-WINDOW is non-nil, insist on finding another |
6b61353c KH |
1820 | window even if BUFFER is already visible in the selected window, |
1821 | and ignore `same-window-regexps' and `same-window-buffer-names'. | |
a6dced2a | 1822 | This function returns the buffer it switched to. |
018ba359 PJ |
1823 | This uses the function `display-buffer' as a subroutine; see the documentation |
1824 | of `display-buffer' for additional customization information. | |
1825 | ||
1826 | Optional third arg NORECORD non-nil means | |
7ee72033 MB |
1827 | do not put this buffer at the front of the list of recently selected ones. */) |
1828 | (buffer, other_window, norecord) | |
6d12711f | 1829 | Lisp_Object buffer, other_window, norecord; |
1ab256cb RM |
1830 | { |
1831 | register Lisp_Object buf; | |
a25f13ae | 1832 | if (NILP (buffer)) |
773fbdb9 | 1833 | buf = Fother_buffer (Fcurrent_buffer (), Qnil, Qnil); |
1ab256cb | 1834 | else |
7c2087ee | 1835 | { |
a25f13ae | 1836 | buf = Fget_buffer (buffer); |
7c2087ee RS |
1837 | if (NILP (buf)) |
1838 | { | |
a25f13ae | 1839 | buf = Fget_buffer_create (buffer); |
7c2087ee RS |
1840 | Fset_buffer_major_mode (buf); |
1841 | } | |
1842 | } | |
1ab256cb | 1843 | Fset_buffer (buf); |
f1321dc3 | 1844 | Fselect_window (Fdisplay_buffer (buf, other_window, Qnil), norecord); |
e8b3a22d | 1845 | return buf; |
1ab256cb RM |
1846 | } |
1847 | ||
1848 | DEFUN ("current-buffer", Fcurrent_buffer, Scurrent_buffer, 0, 0, 0, | |
7ee72033 MB |
1849 | doc: /* Return the current buffer as a Lisp object. */) |
1850 | () | |
1ab256cb RM |
1851 | { |
1852 | register Lisp_Object buf; | |
67180c6a | 1853 | XSETBUFFER (buf, current_buffer); |
1ab256cb RM |
1854 | return buf; |
1855 | } | |
1856 | \f | |
7ec44ec6 GM |
1857 | /* Set the current buffer to B. |
1858 | ||
1859 | We previously set windows_or_buffers_changed here to invalidate | |
1860 | global unchanged information in beg_unchanged and end_unchanged. | |
1861 | This is no longer necessary because we now compute unchanged | |
1862 | information on a buffer-basis. Every action affecting other | |
1863 | windows than the selected one requires a select_window at some | |
1864 | time, and that increments windows_or_buffers_changed. */ | |
1ab256cb RM |
1865 | |
1866 | void | |
1867 | set_buffer_internal (b) | |
1868 | register struct buffer *b; | |
1869 | { | |
b5a225b4 | 1870 | if (current_buffer != b) |
7ec44ec6 | 1871 | set_buffer_internal_1 (b); |
c7aa5005 KH |
1872 | } |
1873 | ||
1874 | /* Set the current buffer to B, and do not set windows_or_buffers_changed. | |
1875 | This is used by redisplay. */ | |
1876 | ||
1877 | void | |
1878 | set_buffer_internal_1 (b) | |
1879 | register struct buffer *b; | |
1880 | { | |
1881 | register struct buffer *old_buf; | |
1882 | register Lisp_Object tail, valcontents; | |
1883 | Lisp_Object tem; | |
1884 | ||
b86af064 | 1885 | #ifdef USE_MMAP_FOR_BUFFERS |
684b01ee | 1886 | if (b->text->beg == NULL) |
b86af064 GM |
1887 | enlarge_buffer_text (b, 0); |
1888 | #endif /* USE_MMAP_FOR_BUFFERS */ | |
177c0ea7 | 1889 | |
c7aa5005 KH |
1890 | if (current_buffer == b) |
1891 | return; | |
1892 | ||
1ab256cb RM |
1893 | old_buf = current_buffer; |
1894 | current_buffer = b; | |
1895 | last_known_column_point = -1; /* invalidate indentation cache */ | |
1896 | ||
336cd056 RS |
1897 | if (old_buf) |
1898 | { | |
1899 | /* Put the undo list back in the base buffer, so that it appears | |
1900 | that an indirect buffer shares the undo list of its base. */ | |
1901 | if (old_buf->base_buffer) | |
1902 | old_buf->base_buffer->undo_list = old_buf->undo_list; | |
1903 | ||
1904 | /* If the old current buffer has markers to record PT, BEGV and ZV | |
1905 | when it is not current, update them now. */ | |
1906 | if (! NILP (old_buf->pt_marker)) | |
1907 | { | |
1908 | Lisp_Object obuf; | |
1909 | XSETBUFFER (obuf, old_buf); | |
3f236a40 RS |
1910 | set_marker_both (old_buf->pt_marker, obuf, |
1911 | BUF_PT (old_buf), BUF_PT_BYTE (old_buf)); | |
336cd056 RS |
1912 | } |
1913 | if (! NILP (old_buf->begv_marker)) | |
1914 | { | |
1915 | Lisp_Object obuf; | |
1916 | XSETBUFFER (obuf, old_buf); | |
3f236a40 RS |
1917 | set_marker_both (old_buf->begv_marker, obuf, |
1918 | BUF_BEGV (old_buf), BUF_BEGV_BYTE (old_buf)); | |
336cd056 RS |
1919 | } |
1920 | if (! NILP (old_buf->zv_marker)) | |
1921 | { | |
1922 | Lisp_Object obuf; | |
1923 | XSETBUFFER (obuf, old_buf); | |
3f236a40 RS |
1924 | set_marker_both (old_buf->zv_marker, obuf, |
1925 | BUF_ZV (old_buf), BUF_ZV_BYTE (old_buf)); | |
336cd056 RS |
1926 | } |
1927 | } | |
1928 | ||
1929 | /* Get the undo list from the base buffer, so that it appears | |
1930 | that an indirect buffer shares the undo list of its base. */ | |
1931 | if (b->base_buffer) | |
1932 | b->undo_list = b->base_buffer->undo_list; | |
1933 | ||
1934 | /* If the new current buffer has markers to record PT, BEGV and ZV | |
1935 | when it is not current, fetch them now. */ | |
1936 | if (! NILP (b->pt_marker)) | |
3f236a40 RS |
1937 | { |
1938 | BUF_PT (b) = marker_position (b->pt_marker); | |
1939 | BUF_PT_BYTE (b) = marker_byte_position (b->pt_marker); | |
1940 | } | |
336cd056 | 1941 | if (! NILP (b->begv_marker)) |
3f236a40 RS |
1942 | { |
1943 | BUF_BEGV (b) = marker_position (b->begv_marker); | |
1944 | BUF_BEGV_BYTE (b) = marker_byte_position (b->begv_marker); | |
1945 | } | |
336cd056 | 1946 | if (! NILP (b->zv_marker)) |
3f236a40 RS |
1947 | { |
1948 | BUF_ZV (b) = marker_position (b->zv_marker); | |
1949 | BUF_ZV_BYTE (b) = marker_byte_position (b->zv_marker); | |
1950 | } | |
336cd056 | 1951 | |
1ab256cb RM |
1952 | /* Look down buffer's list of local Lisp variables |
1953 | to find and update any that forward into C variables. */ | |
1954 | ||
65745fad | 1955 | for (tail = b->local_var_alist; CONSP (tail); tail = XCDR (tail)) |
1ab256cb | 1956 | { |
f5c1dd0d | 1957 | valcontents = SYMBOL_VALUE (XCAR (XCAR (tail))); |
67ee9f6e | 1958 | if ((BUFFER_LOCAL_VALUEP (valcontents)) |
3d871c85 | 1959 | && (tem = XBUFFER_LOCAL_VALUE (valcontents)->realvalue, |
a7a60ce9 | 1960 | (BOOLFWDP (tem) || INTFWDP (tem) || OBJFWDP (tem)))) |
1ab256cb RM |
1961 | /* Just reference the variable |
1962 | to cause it to become set for this buffer. */ | |
7539e11f | 1963 | Fsymbol_value (XCAR (XCAR (tail))); |
1ab256cb RM |
1964 | } |
1965 | ||
1966 | /* Do the same with any others that were local to the previous buffer */ | |
1967 | ||
1968 | if (old_buf) | |
65745fad | 1969 | for (tail = old_buf->local_var_alist; CONSP (tail); tail = XCDR (tail)) |
1ab256cb | 1970 | { |
f5c1dd0d | 1971 | valcontents = SYMBOL_VALUE (XCAR (XCAR (tail))); |
67ee9f6e | 1972 | if ((BUFFER_LOCAL_VALUEP (valcontents)) |
3d871c85 | 1973 | && (tem = XBUFFER_LOCAL_VALUE (valcontents)->realvalue, |
a7a60ce9 | 1974 | (BOOLFWDP (tem) || INTFWDP (tem) || OBJFWDP (tem)))) |
1ab256cb RM |
1975 | /* Just reference the variable |
1976 | to cause it to become set for this buffer. */ | |
7539e11f | 1977 | Fsymbol_value (XCAR (XCAR (tail))); |
1ab256cb RM |
1978 | } |
1979 | } | |
1980 | ||
336cd056 | 1981 | /* Switch to buffer B temporarily for redisplay purposes. |
bbbe9545 | 1982 | This avoids certain things that don't need to be done within redisplay. */ |
336cd056 RS |
1983 | |
1984 | void | |
1985 | set_buffer_temp (b) | |
1986 | struct buffer *b; | |
1987 | { | |
1988 | register struct buffer *old_buf; | |
1989 | ||
1990 | if (current_buffer == b) | |
1991 | return; | |
1992 | ||
1993 | old_buf = current_buffer; | |
1994 | current_buffer = b; | |
1995 | ||
1996 | if (old_buf) | |
1997 | { | |
1998 | /* If the old current buffer has markers to record PT, BEGV and ZV | |
1999 | when it is not current, update them now. */ | |
2000 | if (! NILP (old_buf->pt_marker)) | |
2001 | { | |
2002 | Lisp_Object obuf; | |
2003 | XSETBUFFER (obuf, old_buf); | |
3f236a40 RS |
2004 | set_marker_both (old_buf->pt_marker, obuf, |
2005 | BUF_PT (old_buf), BUF_PT_BYTE (old_buf)); | |
336cd056 RS |
2006 | } |
2007 | if (! NILP (old_buf->begv_marker)) | |
2008 | { | |
2009 | Lisp_Object obuf; | |
2010 | XSETBUFFER (obuf, old_buf); | |
3f236a40 RS |
2011 | set_marker_both (old_buf->begv_marker, obuf, |
2012 | BUF_BEGV (old_buf), BUF_BEGV_BYTE (old_buf)); | |
336cd056 RS |
2013 | } |
2014 | if (! NILP (old_buf->zv_marker)) | |
2015 | { | |
2016 | Lisp_Object obuf; | |
2017 | XSETBUFFER (obuf, old_buf); | |
3f236a40 RS |
2018 | set_marker_both (old_buf->zv_marker, obuf, |
2019 | BUF_ZV (old_buf), BUF_ZV_BYTE (old_buf)); | |
336cd056 RS |
2020 | } |
2021 | } | |
2022 | ||
2023 | /* If the new current buffer has markers to record PT, BEGV and ZV | |
2024 | when it is not current, fetch them now. */ | |
2025 | if (! NILP (b->pt_marker)) | |
3f236a40 RS |
2026 | { |
2027 | BUF_PT (b) = marker_position (b->pt_marker); | |
2028 | BUF_PT_BYTE (b) = marker_byte_position (b->pt_marker); | |
2029 | } | |
336cd056 | 2030 | if (! NILP (b->begv_marker)) |
3f236a40 RS |
2031 | { |
2032 | BUF_BEGV (b) = marker_position (b->begv_marker); | |
2033 | BUF_BEGV_BYTE (b) = marker_byte_position (b->begv_marker); | |
2034 | } | |
336cd056 | 2035 | if (! NILP (b->zv_marker)) |
3f236a40 RS |
2036 | { |
2037 | BUF_ZV (b) = marker_position (b->zv_marker); | |
2038 | BUF_ZV_BYTE (b) = marker_byte_position (b->zv_marker); | |
2039 | } | |
336cd056 RS |
2040 | } |
2041 | ||
1ab256cb | 2042 | DEFUN ("set-buffer", Fset_buffer, Sset_buffer, 1, 1, 0, |
7ee72033 | 2043 | doc: /* Make the buffer BUFFER current for editing operations. |
018ba359 PJ |
2044 | BUFFER may be a buffer or the name of an existing buffer. |
2045 | See also `save-excursion' when you want to make a buffer current temporarily. | |
2046 | This function does not display the buffer, so its effect ends | |
2047 | when the current command terminates. | |
7ee72033 MB |
2048 | Use `switch-to-buffer' or `pop-to-buffer' to switch buffers permanently. */) |
2049 | (buffer) | |
a25f13ae | 2050 | register Lisp_Object buffer; |
1ab256cb | 2051 | { |
a25f13ae KH |
2052 | register Lisp_Object buf; |
2053 | buf = Fget_buffer (buffer); | |
2054 | if (NILP (buf)) | |
2055 | nsberror (buffer); | |
2056 | if (NILP (XBUFFER (buf)->name)) | |
1ab256cb | 2057 | error ("Selecting deleted buffer"); |
a25f13ae KH |
2058 | set_buffer_internal (XBUFFER (buf)); |
2059 | return buf; | |
1ab256cb | 2060 | } |
d0628b06 RS |
2061 | |
2062 | /* Set the current buffer to BUFFER provided it is alive. */ | |
2063 | ||
2064 | Lisp_Object | |
2065 | set_buffer_if_live (buffer) | |
2066 | Lisp_Object buffer; | |
2067 | { | |
2068 | if (! NILP (XBUFFER (buffer)->name)) | |
2069 | Fset_buffer (buffer); | |
2070 | return Qnil; | |
2071 | } | |
1ab256cb RM |
2072 | \f |
2073 | DEFUN ("barf-if-buffer-read-only", Fbarf_if_buffer_read_only, | |
2074 | Sbarf_if_buffer_read_only, 0, 0, 0, | |
7ee72033 MB |
2075 | doc: /* Signal a `buffer-read-only' error if the current buffer is read-only. */) |
2076 | () | |
1ab256cb | 2077 | { |
a96b68f1 RS |
2078 | if (!NILP (current_buffer->read_only) |
2079 | && NILP (Vinhibit_read_only)) | |
4c4dc0b0 | 2080 | xsignal1 (Qbuffer_read_only, Fcurrent_buffer ()); |
1ab256cb RM |
2081 | return Qnil; |
2082 | } | |
2083 | ||
2084 | DEFUN ("bury-buffer", Fbury_buffer, Sbury_buffer, 0, 1, "", | |
7ee72033 | 2085 | doc: /* Put BUFFER at the end of the list of all buffers. |
018ba359 PJ |
2086 | There it is the least likely candidate for `other-buffer' to return; |
2087 | thus, the least likely buffer for \\[switch-to-buffer] to select by default. | |
39971188 | 2088 | You can specify a buffer name as BUFFER, or an actual buffer object. |
018ba359 PJ |
2089 | If BUFFER is nil or omitted, bury the current buffer. |
2090 | Also, if BUFFER is nil or omitted, remove the current buffer from the | |
7ee72033 MB |
2091 | selected window if it is displayed there. */) |
2092 | (buffer) | |
a2428fa2 | 2093 | register Lisp_Object buffer; |
1ab256cb | 2094 | { |
b271272a | 2095 | /* Figure out what buffer we're going to bury. */ |
a2428fa2 | 2096 | if (NILP (buffer)) |
a5611885 | 2097 | { |
c58dab63 | 2098 | Lisp_Object tem; |
a2428fa2 | 2099 | XSETBUFFER (buffer, current_buffer); |
0a63b212 | 2100 | |
c58dab63 | 2101 | tem = Fwindow_buffer (selected_window); |
0a63b212 | 2102 | /* If we're burying the current buffer, unshow it. */ |
c58dab63 | 2103 | if (EQ (buffer, tem)) |
a78e0303 PJ |
2104 | { |
2105 | if (NILP (Fwindow_dedicated_p (selected_window))) | |
2106 | Fswitch_to_buffer (Fother_buffer (buffer, Qnil, Qnil), Qnil); | |
2107 | else if (NILP (XWINDOW (selected_window)->parent)) | |
2108 | Ficonify_frame (Fwindow_frame (selected_window)); | |
2109 | else | |
2110 | Fdelete_window (selected_window); | |
2111 | } | |
a5611885 | 2112 | } |
1ab256cb RM |
2113 | else |
2114 | { | |
2115 | Lisp_Object buf1; | |
177c0ea7 | 2116 | |
a2428fa2 | 2117 | buf1 = Fget_buffer (buffer); |
265a9e55 | 2118 | if (NILP (buf1)) |
a2428fa2 EN |
2119 | nsberror (buffer); |
2120 | buffer = buf1; | |
b271272a JB |
2121 | } |
2122 | ||
a1a8b28e GM |
2123 | /* Move buffer to the end of the buffer list. Do nothing if the |
2124 | buffer is killed. */ | |
2125 | if (!NILP (XBUFFER (buffer)->name)) | |
2126 | { | |
2127 | Lisp_Object aelt, link; | |
b271272a | 2128 | |
a1a8b28e GM |
2129 | aelt = Frassq (buffer, Vbuffer_alist); |
2130 | link = Fmemq (aelt, Vbuffer_alist); | |
2131 | Vbuffer_alist = Fdelq (aelt, Vbuffer_alist); | |
f3fbd155 | 2132 | XSETCDR (link, Qnil); |
a1a8b28e | 2133 | Vbuffer_alist = nconc2 (Vbuffer_alist, link); |
1ab256cb | 2134 | |
a18b8cb5 KL |
2135 | XFRAME (selected_frame)->buffer_list |
2136 | = Fdelq (buffer, XFRAME (selected_frame)->buffer_list); | |
2137 | XFRAME (selected_frame)->buried_buffer_list | |
2138 | = Fcons (buffer, Fdelq (buffer, XFRAME (selected_frame)->buried_buffer_list)); | |
a1a8b28e | 2139 | } |
dec989eb | 2140 | |
1ab256cb RM |
2141 | return Qnil; |
2142 | } | |
2143 | \f | |
c922bc55 | 2144 | DEFUN ("erase-buffer", Ferase_buffer, Serase_buffer, 0, 0, "*", |
7ee72033 | 2145 | doc: /* Delete the entire contents of the current buffer. |
018ba359 | 2146 | Any narrowing restriction in effect (see `narrow-to-region') is removed, |
7ee72033 MB |
2147 | so the buffer is truly empty after this. */) |
2148 | () | |
1ab256cb RM |
2149 | { |
2150 | Fwiden (); | |
c0d9a0c3 GM |
2151 | |
2152 | del_range (BEG, Z); | |
c280bc6a | 2153 | |
1ab256cb RM |
2154 | current_buffer->last_window_start = 1; |
2155 | /* Prevent warnings, or suspension of auto saving, that would happen | |
2156 | if future size is less than past size. Use of erase-buffer | |
2157 | implies that the future text is not really related to the past text. */ | |
8d7a4592 | 2158 | XSETFASTINT (current_buffer->save_length, 0); |
1ab256cb RM |
2159 | return Qnil; |
2160 | } | |
2161 | ||
01136e9b | 2162 | void |
1ab256cb RM |
2163 | validate_region (b, e) |
2164 | register Lisp_Object *b, *e; | |
2165 | { | |
b7826503 PJ |
2166 | CHECK_NUMBER_COERCE_MARKER (*b); |
2167 | CHECK_NUMBER_COERCE_MARKER (*e); | |
1ab256cb RM |
2168 | |
2169 | if (XINT (*b) > XINT (*e)) | |
2170 | { | |
03192067 KH |
2171 | Lisp_Object tem; |
2172 | tem = *b; *b = *e; *e = tem; | |
1ab256cb RM |
2173 | } |
2174 | ||
2175 | if (!(BEGV <= XINT (*b) && XINT (*b) <= XINT (*e) | |
2176 | && XINT (*e) <= ZV)) | |
2177 | args_out_of_range (*b, *e); | |
2178 | } | |
2179 | \f | |
b05525fa RS |
2180 | /* Advance BYTE_POS up to a character boundary |
2181 | and return the adjusted position. */ | |
2182 | ||
2183 | static int | |
2184 | advance_to_char_boundary (byte_pos) | |
2185 | int byte_pos; | |
2186 | { | |
f8449323 | 2187 | int c; |
b05525fa | 2188 | |
f8449323 RS |
2189 | if (byte_pos == BEG) |
2190 | /* Beginning of buffer is always a character boundary. */ | |
6d70a280 | 2191 | return BEG; |
f8449323 RS |
2192 | |
2193 | c = FETCH_BYTE (byte_pos); | |
2194 | if (! CHAR_HEAD_P (c)) | |
b05525fa | 2195 | { |
1be6387d | 2196 | /* We should advance BYTE_POS only when C is a constituent of a |
f8449323 | 2197 | multibyte sequence. */ |
a9bcded1 KH |
2198 | int orig_byte_pos = byte_pos; |
2199 | ||
2200 | do | |
2201 | { | |
2202 | byte_pos--; | |
2203 | c = FETCH_BYTE (byte_pos); | |
2204 | } | |
2205 | while (! CHAR_HEAD_P (c) && byte_pos > BEG); | |
f8449323 | 2206 | INC_POS (byte_pos); |
a9bcded1 KH |
2207 | if (byte_pos < orig_byte_pos) |
2208 | byte_pos = orig_byte_pos; | |
f8449323 RS |
2209 | /* If C is a constituent of a multibyte sequence, BYTE_POS was |
2210 | surely advance to the correct character boundary. If C is | |
2211 | not, BYTE_POS was unchanged. */ | |
b05525fa RS |
2212 | } |
2213 | ||
20773569 | 2214 | return byte_pos; |
b05525fa RS |
2215 | } |
2216 | ||
13cda5f9 SM |
2217 | DEFUN ("buffer-swap-text", Fbuffer_swap_text, Sbuffer_swap_text, |
2218 | 1, 1, 0, | |
2219 | doc: /* Swap the text between current buffer and BUFFER. */) | |
2220 | (buffer) | |
2221 | Lisp_Object buffer; | |
2222 | { | |
2223 | struct buffer *other_buffer; | |
2224 | CHECK_BUFFER (buffer); | |
2225 | other_buffer = XBUFFER (buffer); | |
2226 | ||
2227 | /* Actually, it probably works just fine. | |
2228 | * if (other_buffer == current_buffer) | |
2229 | * error ("Cannot swap a buffer's text with itself"); */ | |
2230 | ||
2231 | /* Actually, this may be workable as well, tho probably only if they're | |
2232 | *both* indirect. */ | |
2233 | if (other_buffer->base_buffer | |
2234 | || current_buffer->base_buffer) | |
2235 | error ("Cannot swap indirect buffers's text"); | |
2236 | ||
2237 | { /* This is probably harder to make work. */ | |
2238 | struct buffer *other; | |
2239 | for (other = all_buffers; other; other = other->next) | |
2240 | if (other->base_buffer == other_buffer | |
2241 | || other->base_buffer == current_buffer) | |
2242 | error ("One of the buffers to swap has indirect buffers"); | |
2243 | } | |
2244 | ||
2245 | #define swapfield(field, type) \ | |
2246 | do { \ | |
2247 | type tmp##field = other_buffer->field; \ | |
2248 | other_buffer->field = current_buffer->field; \ | |
2249 | current_buffer->field = tmp##field; \ | |
2250 | } while (0) | |
2251 | ||
2252 | swapfield (own_text, struct buffer_text); | |
2253 | eassert (current_buffer->text == ¤t_buffer->own_text); | |
2254 | eassert (other_buffer->text == &other_buffer->own_text); | |
2255 | swapfield (pt, EMACS_INT); | |
2256 | swapfield (pt_byte, EMACS_INT); | |
2257 | swapfield (begv, EMACS_INT); | |
2258 | swapfield (begv_byte, EMACS_INT); | |
2259 | swapfield (zv, EMACS_INT); | |
2260 | swapfield (zv_byte, EMACS_INT); | |
2261 | eassert (!current_buffer->base_buffer); | |
2262 | eassert (!other_buffer->base_buffer); | |
2263 | current_buffer->clip_changed = 1; other_buffer->clip_changed = 1; | |
2264 | swapfield (newline_cache, struct region_cache *); | |
2265 | swapfield (width_run_cache, struct region_cache *); | |
2266 | current_buffer->prevent_redisplay_optimizations_p = 1; | |
2267 | other_buffer->prevent_redisplay_optimizations_p = 1; | |
2268 | swapfield (overlays_before, struct Lisp_Overlay *); | |
2269 | swapfield (overlays_after, struct Lisp_Overlay *); | |
2270 | swapfield (overlay_center, EMACS_INT); | |
2271 | swapfield (undo_list, Lisp_Object); | |
2272 | swapfield (mark, Lisp_Object); | |
2273 | if (MARKERP (current_buffer->mark) && XMARKER (current_buffer->mark)->buffer) | |
2274 | XMARKER (current_buffer->mark)->buffer = current_buffer; | |
2275 | if (MARKERP (other_buffer->mark) && XMARKER (other_buffer->mark)->buffer) | |
2276 | XMARKER (other_buffer->mark)->buffer = other_buffer; | |
2277 | swapfield (enable_multibyte_characters, Lisp_Object); | |
2278 | /* FIXME: Not sure what we should do with these *_marker fields. | |
2279 | Hopefully they're just nil anyway. */ | |
2280 | swapfield (pt_marker, Lisp_Object); | |
2281 | swapfield (begv_marker, Lisp_Object); | |
2282 | swapfield (zv_marker, Lisp_Object); | |
2283 | current_buffer->point_before_scroll = Qnil; | |
2284 | other_buffer->point_before_scroll = Qnil; | |
2285 | ||
2286 | current_buffer->text->modiff++; other_buffer->text->modiff++; | |
2287 | current_buffer->text->chars_modiff++; other_buffer->text->chars_modiff++; | |
2288 | current_buffer->text->overlay_modiff++; other_buffer->text->overlay_modiff++; | |
2289 | current_buffer->text->beg_unchanged = current_buffer->text->gpt; | |
2290 | current_buffer->text->end_unchanged = current_buffer->text->gpt; | |
2291 | other_buffer->text->beg_unchanged = current_buffer->text->gpt; | |
2292 | other_buffer->text->end_unchanged = current_buffer->text->gpt; | |
2293 | { | |
2294 | struct Lisp_Marker *m; | |
2295 | for (m = BUF_MARKERS (current_buffer); m; m = m->next) | |
2296 | if (m->buffer == other_buffer) | |
2297 | m->buffer = current_buffer; | |
2298 | for (m = BUF_MARKERS (other_buffer); m; m = m->next) | |
2299 | if (m->buffer == current_buffer) | |
2300 | m->buffer = other_buffer; | |
2301 | } | |
2302 | if (current_buffer->text->intervals) | |
2303 | (eassert (EQ (current_buffer->text->intervals->up.obj, buffer)), | |
2304 | XSETBUFFER (current_buffer->text->intervals->up.obj, current_buffer)); | |
2305 | if (other_buffer->text->intervals) | |
2306 | (eassert (EQ (other_buffer->text->intervals->up.obj, Fcurrent_buffer ())), | |
2307 | XSETBUFFER (other_buffer->text->intervals->up.obj, other_buffer)); | |
2308 | ||
2309 | return Qnil; | |
2310 | } | |
2311 | ||
3ac81adb RS |
2312 | DEFUN ("set-buffer-multibyte", Fset_buffer_multibyte, Sset_buffer_multibyte, |
2313 | 1, 1, 0, | |
7ee72033 | 2314 | doc: /* Set the multibyte flag of the current buffer to FLAG. |
018ba359 PJ |
2315 | If FLAG is t, this makes the buffer a multibyte buffer. |
2316 | If FLAG is nil, this makes the buffer a single-byte buffer. | |
8f924df7 KH |
2317 | In these cases, the buffer contents remain unchanged as a sequence of |
2318 | bytes but the contents viewed as characters do change. | |
2319 | If FLAG is `to', this makes the buffer a multibyte buffer by changing | |
6b61353c KH |
2320 | all eight-bit bytes to eight-bit characters. |
2321 | If the multibyte flag was really changed, undo information of the | |
2322 | current buffer is cleared. */) | |
7ee72033 | 2323 | (flag) |
3ac81adb RS |
2324 | Lisp_Object flag; |
2325 | { | |
65745fad | 2326 | struct Lisp_Marker *tail, *markers; |
abc9d959 | 2327 | struct buffer *other; |
458c8af4 | 2328 | int begv, zv; |
8d1203ea | 2329 | int narrowed = (BEG != BEGV || Z != ZV); |
ed00559d | 2330 | int modified_p = !NILP (Fbuffer_modified_p (Qnil)); |
38babc07 KS |
2331 | Lisp_Object old_undo = current_buffer->undo_list; |
2332 | struct gcpro gcpro1; | |
3ac81adb | 2333 | |
6e553d5e RS |
2334 | if (current_buffer->base_buffer) |
2335 | error ("Cannot do `set-buffer-multibyte' on an indirect buffer"); | |
2336 | ||
70e77119 AS |
2337 | /* Do nothing if nothing actually changes. */ |
2338 | if (NILP (flag) == NILP (current_buffer->enable_multibyte_characters)) | |
2339 | return flag; | |
2340 | ||
38babc07 KS |
2341 | GCPRO1 (old_undo); |
2342 | ||
2343 | /* Don't record these buffer changes. We will put a special undo entry | |
2344 | instead. */ | |
2345 | current_buffer->undo_list = Qt; | |
b05525fa | 2346 | |
3ac81adb RS |
2347 | /* If the cached position is for this buffer, clear it out. */ |
2348 | clear_charpos_cache (current_buffer); | |
2349 | ||
458c8af4 KH |
2350 | if (NILP (flag)) |
2351 | begv = BEGV_BYTE, zv = ZV_BYTE; | |
2352 | else | |
2353 | begv = BEGV, zv = ZV; | |
2354 | ||
a9bcded1 KH |
2355 | if (narrowed) |
2356 | Fwiden (); | |
2357 | ||
3ac81adb RS |
2358 | if (NILP (flag)) |
2359 | { | |
a9bcded1 KH |
2360 | int pos, stop; |
2361 | unsigned char *p; | |
2362 | ||
3ac81adb RS |
2363 | /* Do this first, so it can use CHAR_TO_BYTE |
2364 | to calculate the old correspondences. */ | |
2365 | set_intervals_multibyte (0); | |
2366 | ||
2367 | current_buffer->enable_multibyte_characters = Qnil; | |
2368 | ||
2369 | Z = Z_BYTE; | |
2370 | BEGV = BEGV_BYTE; | |
2371 | ZV = ZV_BYTE; | |
2372 | GPT = GPT_BYTE; | |
2373 | TEMP_SET_PT_BOTH (PT_BYTE, PT_BYTE); | |
2374 | ||
60ebfdf3 | 2375 | |
65745fad SM |
2376 | for (tail = BUF_MARKERS (current_buffer); tail; tail = tail->next) |
2377 | tail->charpos = tail->bytepos; | |
a9bcded1 KH |
2378 | |
2379 | /* Convert multibyte form of 8-bit characters to unibyte. */ | |
2380 | pos = BEG; | |
2381 | stop = GPT; | |
2382 | p = BEG_ADDR; | |
2383 | while (1) | |
2384 | { | |
2385 | int c, bytes; | |
2386 | ||
2387 | if (pos == stop) | |
2388 | { | |
2389 | if (pos == Z) | |
2390 | break; | |
2391 | p = GAP_END_ADDR; | |
2392 | stop = Z; | |
2393 | } | |
8f348ed5 KH |
2394 | if (ASCII_BYTE_P (*p)) |
2395 | p++, pos++; | |
2396 | else if (CHAR_BYTE8_HEAD_P (*p)) | |
a9bcded1 | 2397 | { |
31285a8f | 2398 | c = STRING_CHAR_AND_LENGTH (p, stop - pos, bytes); |
a9bcded1 KH |
2399 | /* Delete all bytes for this 8-bit character but the |
2400 | last one, and change the last one to the charcter | |
2401 | code. */ | |
2402 | bytes--; | |
2403 | del_range_2 (pos, pos, pos + bytes, pos + bytes, 0); | |
2404 | p = GAP_END_ADDR; | |
2405 | *p++ = c; | |
2406 | pos++; | |
2407 | if (begv > pos) | |
2408 | begv -= bytes; | |
2409 | if (zv > pos) | |
2410 | zv -= bytes; | |
2411 | stop = Z; | |
2412 | } | |
8f924df7 | 2413 | else |
8f348ed5 KH |
2414 | { |
2415 | bytes = BYTES_BY_CHAR_HEAD (*p); | |
2416 | p += bytes, pos += bytes; | |
2417 | } | |
a9bcded1 KH |
2418 | } |
2419 | if (narrowed) | |
2420 | Fnarrow_to_region (make_number (begv), make_number (zv)); | |
3ac81adb RS |
2421 | } |
2422 | else | |
2423 | { | |
a9bcded1 KH |
2424 | int pt = PT; |
2425 | int pos, stop; | |
8f348ed5 | 2426 | unsigned char *p, *pend; |
a9bcded1 | 2427 | |
673c57d2 | 2428 | /* Be sure not to have a multibyte sequence striding over the GAP. |
8f348ed5 KH |
2429 | Ex: We change this: "...abc\302 _GAP_ \241def..." |
2430 | to: "...abc _GAP_ \302\241def..." */ | |
673c57d2 | 2431 | |
8f924df7 | 2432 | if (EQ (flag, Qt) |
a3a303df | 2433 | && GPT_BYTE > 1 && GPT_BYTE < Z_BYTE |
673c57d2 KH |
2434 | && ! CHAR_HEAD_P (*(GAP_END_ADDR))) |
2435 | { | |
2436 | unsigned char *p = GPT_ADDR - 1; | |
2437 | ||
2438 | while (! CHAR_HEAD_P (*p) && p > BEG_ADDR) p--; | |
2439 | if (BASE_LEADING_CODE_P (*p)) | |
2440 | { | |
2441 | int new_gpt = GPT_BYTE - (GPT_ADDR - p); | |
2442 | ||
2443 | move_gap_both (new_gpt, new_gpt); | |
2444 | } | |
2445 | } | |
2446 | ||
a9bcded1 KH |
2447 | /* Make the buffer contents valid as multibyte by converting |
2448 | 8-bit characters to multibyte form. */ | |
2449 | pos = BEG; | |
2450 | stop = GPT; | |
2451 | p = BEG_ADDR; | |
8f348ed5 | 2452 | pend = GPT_ADDR; |
a9bcded1 KH |
2453 | while (1) |
2454 | { | |
2455 | int bytes; | |
2456 | ||
2457 | if (pos == stop) | |
2458 | { | |
2459 | if (pos == Z) | |
2460 | break; | |
2461 | p = GAP_END_ADDR; | |
8f348ed5 | 2462 | pend = Z_ADDR; |
a9bcded1 KH |
2463 | stop = Z; |
2464 | } | |
177c0ea7 | 2465 | |
a3a303df KH |
2466 | if (ASCII_BYTE_P (*p)) |
2467 | p++, pos++; | |
8f924df7 | 2468 | else if (EQ (flag, Qt) && (bytes = MULTIBYTE_LENGTH (p, pend)) > 0) |
a9bcded1 KH |
2469 | p += bytes, pos += bytes; |
2470 | else | |
2471 | { | |
2472 | unsigned char tmp[MAX_MULTIBYTE_LENGTH]; | |
a3a303df | 2473 | int c; |
a9bcded1 | 2474 | |
8f924df7 | 2475 | c = BYTE8_TO_CHAR (*p); |
8c2fc311 | 2476 | bytes = CHAR_STRING (c, tmp); |
a9bcded1 KH |
2477 | *p = tmp[0]; |
2478 | TEMP_SET_PT_BOTH (pos + 1, pos + 1); | |
2479 | bytes--; | |
2480 | insert_1_both (tmp + 1, bytes, bytes, 1, 0, 0); | |
2481 | /* Now the gap is after the just inserted data. */ | |
2482 | pos = GPT; | |
2483 | p = GAP_END_ADDR; | |
2484 | if (pos <= begv) | |
2485 | begv += bytes; | |
2486 | if (pos <= zv) | |
2487 | zv += bytes; | |
2488 | if (pos <= pt) | |
2489 | pt += bytes; | |
31285a8f | 2490 | pend = Z_ADDR; |
a9bcded1 KH |
2491 | stop = Z; |
2492 | } | |
2493 | } | |
2494 | ||
2495 | if (pt != PT) | |
2496 | TEMP_SET_PT (pt); | |
2497 | ||
2498 | if (narrowed) | |
2499 | Fnarrow_to_region (make_number (begv), make_number (zv)); | |
2500 | ||
3ac81adb RS |
2501 | /* Do this first, so that chars_in_text asks the right question. |
2502 | set_intervals_multibyte needs it too. */ | |
2503 | current_buffer->enable_multibyte_characters = Qt; | |
2504 | ||
b05525fa | 2505 | GPT_BYTE = advance_to_char_boundary (GPT_BYTE); |
3ac81adb | 2506 | GPT = chars_in_text (BEG_ADDR, GPT_BYTE - BEG_BYTE) + BEG; |
b05525fa | 2507 | |
673c57d2 | 2508 | Z = chars_in_text (GAP_END_ADDR, Z_BYTE - GPT_BYTE) + GPT; |
b05525fa RS |
2509 | |
2510 | BEGV_BYTE = advance_to_char_boundary (BEGV_BYTE); | |
3ac81adb | 2511 | if (BEGV_BYTE > GPT_BYTE) |
673c57d2 | 2512 | BEGV = chars_in_text (GAP_END_ADDR, BEGV_BYTE - GPT_BYTE) + GPT; |
3ac81adb RS |
2513 | else |
2514 | BEGV = chars_in_text (BEG_ADDR, BEGV_BYTE - BEG_BYTE) + BEG; | |
b05525fa RS |
2515 | |
2516 | ZV_BYTE = advance_to_char_boundary (ZV_BYTE); | |
3ac81adb | 2517 | if (ZV_BYTE > GPT_BYTE) |
673c57d2 | 2518 | ZV = chars_in_text (GAP_END_ADDR, ZV_BYTE - GPT_BYTE) + GPT; |
3ac81adb RS |
2519 | else |
2520 | ZV = chars_in_text (BEG_ADDR, ZV_BYTE - BEG_BYTE) + BEG; | |
b05525fa RS |
2521 | |
2522 | { | |
2523 | int pt_byte = advance_to_char_boundary (PT_BYTE); | |
2524 | int pt; | |
2525 | ||
2526 | if (pt_byte > GPT_BYTE) | |
673c57d2 | 2527 | pt = chars_in_text (GAP_END_ADDR, pt_byte - GPT_BYTE) + GPT; |
b05525fa RS |
2528 | else |
2529 | pt = chars_in_text (BEG_ADDR, pt_byte - BEG_BYTE) + BEG; | |
2530 | TEMP_SET_PT_BOTH (pt, pt_byte); | |
2531 | } | |
3ac81adb RS |
2532 | |
2533 | tail = markers = BUF_MARKERS (current_buffer); | |
95fb069b RS |
2534 | |
2535 | /* This prevents BYTE_TO_CHAR (that is, buf_bytepos_to_charpos) from | |
2536 | getting confused by the markers that have not yet been updated. | |
2537 | It is also a signal that it should never create a marker. */ | |
65745fad | 2538 | BUF_MARKERS (current_buffer) = NULL; |
3ac81adb | 2539 | |
65745fad | 2540 | for (; tail; tail = tail->next) |
3ac81adb | 2541 | { |
65745fad SM |
2542 | tail->bytepos = advance_to_char_boundary (tail->bytepos); |
2543 | tail->charpos = BYTE_TO_CHAR (tail->bytepos); | |
3ac81adb | 2544 | } |
b69f9797 RS |
2545 | |
2546 | /* Make sure no markers were put on the chain | |
2547 | while the chain value was incorrect. */ | |
65745fad | 2548 | if (BUF_MARKERS (current_buffer)) |
b69f9797 RS |
2549 | abort (); |
2550 | ||
3ac81adb RS |
2551 | BUF_MARKERS (current_buffer) = markers; |
2552 | ||
2553 | /* Do this last, so it can calculate the new correspondences | |
2554 | between chars and bytes. */ | |
2555 | set_intervals_multibyte (1); | |
2556 | } | |
2557 | ||
38babc07 KS |
2558 | if (!EQ (old_undo, Qt)) |
2559 | { | |
2560 | /* Represent all the above changes by a special undo entry. */ | |
2561 | extern Lisp_Object Qapply; | |
8929fd87 KS |
2562 | current_buffer->undo_list = Fcons (list3 (Qapply, |
2563 | intern ("set-buffer-multibyte"), | |
2564 | NILP (flag) ? Qt : Qnil), | |
2565 | old_undo); | |
38babc07 KS |
2566 | } |
2567 | ||
2568 | UNGCPRO; | |
a9bcded1 | 2569 | |
724b203f GM |
2570 | /* Changing the multibyteness of a buffer means that all windows |
2571 | showing that buffer must be updated thoroughly. */ | |
2572 | current_buffer->prevent_redisplay_optimizations_p = 1; | |
2573 | ++windows_or_buffers_changed; | |
2574 | ||
abc9d959 RS |
2575 | /* Copy this buffer's new multibyte status |
2576 | into all of its indirect buffers. */ | |
2577 | for (other = all_buffers; other; other = other->next) | |
2578 | if (other->base_buffer == current_buffer && !NILP (other->name)) | |
724b203f GM |
2579 | { |
2580 | other->enable_multibyte_characters | |
2581 | = current_buffer->enable_multibyte_characters; | |
2582 | other->prevent_redisplay_optimizations_p = 1; | |
2583 | } | |
abc9d959 | 2584 | |
ed00559d KH |
2585 | /* Restore the modifiedness of the buffer. */ |
2586 | if (!modified_p && !NILP (Fbuffer_modified_p (Qnil))) | |
2587 | Fset_buffer_modified_p (Qnil); | |
2588 | ||
2a2b50a9 | 2589 | #ifdef subprocesses |
172f9454 KH |
2590 | /* Update coding systems of this buffer's process (if any). */ |
2591 | { | |
2592 | Lisp_Object process; | |
2593 | ||
2594 | process = Fget_buffer_process (Fcurrent_buffer ()); | |
2595 | if (PROCESSP (process)) | |
2596 | setup_process_coding_systems (process); | |
2597 | } | |
2a2b50a9 | 2598 | #endif /* subprocesses */ |
172f9454 | 2599 | |
3ac81adb RS |
2600 | return flag; |
2601 | } | |
2602 | \f | |
1ab256cb | 2603 | DEFUN ("kill-all-local-variables", Fkill_all_local_variables, Skill_all_local_variables, |
efc7e75f | 2604 | 0, 0, 0, |
7ee72033 | 2605 | doc: /* Switch to Fundamental mode by killing current buffer's local variables. |
018ba359 PJ |
2606 | Most local variable bindings are eliminated so that the default values |
2607 | become effective once more. Also, the syntax table is set from | |
2608 | `standard-syntax-table', the local keymap is set to nil, | |
2609 | and the abbrev table from `fundamental-mode-abbrev-table'. | |
2610 | This function also forces redisplay of the mode line. | |
2611 | ||
2612 | Every function to select a new major mode starts by | |
2613 | calling this function. | |
2614 | ||
2615 | As a special exception, local variables whose names have | |
2616 | a non-nil `permanent-local' property are not eliminated by this function. | |
2617 | ||
2618 | The first thing this function does is run | |
7ee72033 MB |
2619 | the normal hook `change-major-mode-hook'. */) |
2620 | () | |
1ab256cb | 2621 | { |
fd186f07 | 2622 | if (!NILP (Vrun_hooks)) |
43ed3b8d | 2623 | call1 (Vrun_hooks, Qchange_major_mode_hook); |
1ab256cb | 2624 | |
3709505e | 2625 | /* Make sure none of the bindings in local_var_alist |
2f3f993b | 2626 | remain swapped in, in their symbols. */ |
1ab256cb | 2627 | |
2f3f993b | 2628 | swap_out_buffer_local_variables (current_buffer); |
1ab256cb RM |
2629 | |
2630 | /* Actually eliminate all local bindings of this buffer. */ | |
2631 | ||
13de9290 | 2632 | reset_buffer_local_variables (current_buffer, 0); |
1ab256cb | 2633 | |
1ab256cb RM |
2634 | /* Force mode-line redisplay. Useful here because all major mode |
2635 | commands call this function. */ | |
2636 | update_mode_lines++; | |
2637 | ||
2638 | return Qnil; | |
2639 | } | |
2f3f993b RS |
2640 | |
2641 | /* Make sure no local variables remain set up with buffer B | |
2642 | for their current values. */ | |
2643 | ||
2644 | static void | |
2645 | swap_out_buffer_local_variables (b) | |
2646 | struct buffer *b; | |
2647 | { | |
2648 | Lisp_Object oalist, alist, sym, tem, buffer; | |
2649 | ||
2650 | XSETBUFFER (buffer, b); | |
2651 | oalist = b->local_var_alist; | |
2652 | ||
67ee9f6e | 2653 | for (alist = oalist; CONSP (alist); alist = XCDR (alist)) |
2f3f993b | 2654 | { |
7539e11f | 2655 | sym = XCAR (XCAR (alist)); |
2f3f993b RS |
2656 | |
2657 | /* Need not do anything if some other buffer's binding is now encached. */ | |
f5c1dd0d | 2658 | tem = XBUFFER_LOCAL_VALUE (SYMBOL_VALUE (sym))->buffer; |
e7c10f83 | 2659 | if (EQ (tem, buffer)) |
2f3f993b | 2660 | { |
e7c10f83 SM |
2661 | /* Symbol is set up for this buffer's old local value: |
2662 | swap it out! */ | |
2663 | swap_in_global_binding (sym); | |
2f3f993b RS |
2664 | } |
2665 | } | |
2666 | } | |
1ab256cb | 2667 | \f |
2eec3b4e | 2668 | /* Find all the overlays in the current buffer that contain position POS. |
177c0ea7 | 2669 | Return the number found, and store them in a vector in *VEC_PTR. |
2eec3b4e | 2670 | Store in *LEN_PTR the size allocated for the vector. |
52f8ec73 | 2671 | Store in *NEXT_PTR the next position after POS where an overlay starts, |
624d2678 | 2672 | or ZV if there are no more overlays between POS and ZV. |
bbbe9545 | 2673 | Store in *PREV_PTR the previous position before POS where an overlay ends, |
413e06a4 | 2674 | or where an overlay starts which ends at or after POS; |
624d2678 | 2675 | or BEGV if there are no such overlays from BEGV to POS. |
239c932b | 2676 | NEXT_PTR and/or PREV_PTR may be 0, meaning don't store that info. |
2eec3b4e RS |
2677 | |
2678 | *VEC_PTR and *LEN_PTR should contain a valid vector and size | |
61d54cd5 RS |
2679 | when this function is called. |
2680 | ||
2681 | If EXTEND is non-zero, we make the vector bigger if necessary. | |
2682 | If EXTEND is zero, we never extend the vector, | |
2683 | and we store only as many overlays as will fit. | |
ac869cf7 MB |
2684 | But we still return the total number of overlays. |
2685 | ||
2686 | If CHANGE_REQ is true, then any position written into *PREV_PTR or | |
2687 | *NEXT_PTR is guaranteed to be not equal to POS, unless it is the | |
2688 | default (BEGV or ZV). */ | |
2eec3b4e RS |
2689 | |
2690 | int | |
ac869cf7 | 2691 | overlays_at (pos, extend, vec_ptr, len_ptr, next_ptr, prev_ptr, change_req) |
c2d5b10f | 2692 | EMACS_INT pos; |
61d54cd5 | 2693 | int extend; |
2eec3b4e RS |
2694 | Lisp_Object **vec_ptr; |
2695 | int *len_ptr; | |
0f8b27ea SM |
2696 | EMACS_INT *next_ptr; |
2697 | EMACS_INT *prev_ptr; | |
ac869cf7 | 2698 | int change_req; |
1ab256cb | 2699 | { |
2410d73a SM |
2700 | Lisp_Object overlay, start, end; |
2701 | struct Lisp_Overlay *tail; | |
2eec3b4e RS |
2702 | int idx = 0; |
2703 | int len = *len_ptr; | |
2704 | Lisp_Object *vec = *vec_ptr; | |
2705 | int next = ZV; | |
239c932b | 2706 | int prev = BEGV; |
61d54cd5 RS |
2707 | int inhibit_storing = 0; |
2708 | ||
2410d73a | 2709 | for (tail = current_buffer->overlays_before; tail; tail = tail->next) |
2eec3b4e | 2710 | { |
239c932b | 2711 | int startpos, endpos; |
52f8ec73 | 2712 | |
2410d73a | 2713 | XSETMISC (overlay, tail); |
1ab256cb | 2714 | |
2eec3b4e RS |
2715 | start = OVERLAY_START (overlay); |
2716 | end = OVERLAY_END (overlay); | |
239c932b RS |
2717 | endpos = OVERLAY_POSITION (end); |
2718 | if (endpos < pos) | |
2719 | { | |
2720 | if (prev < endpos) | |
2721 | prev = endpos; | |
2722 | break; | |
2723 | } | |
413e06a4 RS |
2724 | startpos = OVERLAY_POSITION (start); |
2725 | /* This one ends at or after POS | |
daa1c109 | 2726 | so its start counts for PREV_PTR if it's before POS. */ |
413e06a4 RS |
2727 | if (prev < startpos && startpos < pos) |
2728 | prev = startpos; | |
239c932b RS |
2729 | if (endpos == pos) |
2730 | continue; | |
2eec3b4e RS |
2731 | if (startpos <= pos) |
2732 | { | |
2733 | if (idx == len) | |
2734 | { | |
61d54cd5 RS |
2735 | /* The supplied vector is full. |
2736 | Either make it bigger, or don't store any more in it. */ | |
2737 | if (extend) | |
2738 | { | |
0552666b GM |
2739 | /* Make it work with an initial len == 0. */ |
2740 | len *= 2; | |
2741 | if (len == 0) | |
2742 | len = 4; | |
2743 | *len_ptr = len; | |
61d54cd5 RS |
2744 | vec = (Lisp_Object *) xrealloc (vec, len * sizeof (Lisp_Object)); |
2745 | *vec_ptr = vec; | |
2746 | } | |
2747 | else | |
2748 | inhibit_storing = 1; | |
2eec3b4e | 2749 | } |
61d54cd5 RS |
2750 | |
2751 | if (!inhibit_storing) | |
2752 | vec[idx] = overlay; | |
2753 | /* Keep counting overlays even if we can't return them all. */ | |
2754 | idx++; | |
2eec3b4e RS |
2755 | } |
2756 | else if (startpos < next) | |
2757 | next = startpos; | |
2758 | } | |
2759 | ||
2410d73a | 2760 | for (tail = current_buffer->overlays_after; tail; tail = tail->next) |
1ab256cb | 2761 | { |
239c932b | 2762 | int startpos, endpos; |
52f8ec73 | 2763 | |
2410d73a | 2764 | XSETMISC (overlay, tail); |
2eec3b4e RS |
2765 | |
2766 | start = OVERLAY_START (overlay); | |
2767 | end = OVERLAY_END (overlay); | |
2768 | startpos = OVERLAY_POSITION (start); | |
52f8ec73 | 2769 | if (pos < startpos) |
2eec3b4e RS |
2770 | { |
2771 | if (startpos < next) | |
2772 | next = startpos; | |
2773 | break; | |
2774 | } | |
239c932b RS |
2775 | endpos = OVERLAY_POSITION (end); |
2776 | if (pos < endpos) | |
2eec3b4e RS |
2777 | { |
2778 | if (idx == len) | |
2779 | { | |
61d54cd5 RS |
2780 | if (extend) |
2781 | { | |
4b0e44fc RS |
2782 | /* Make it work with an initial len == 0. */ |
2783 | len *= 2; | |
0552666b | 2784 | if (len == 0) |
4b0e44fc RS |
2785 | len = 4; |
2786 | *len_ptr = len; | |
61d54cd5 RS |
2787 | vec = (Lisp_Object *) xrealloc (vec, len * sizeof (Lisp_Object)); |
2788 | *vec_ptr = vec; | |
2789 | } | |
2790 | else | |
2791 | inhibit_storing = 1; | |
2eec3b4e | 2792 | } |
61d54cd5 RS |
2793 | |
2794 | if (!inhibit_storing) | |
2795 | vec[idx] = overlay; | |
2796 | idx++; | |
413e06a4 RS |
2797 | |
2798 | if (startpos < pos && startpos > prev) | |
2799 | prev = startpos; | |
2eec3b4e | 2800 | } |
239c932b RS |
2801 | else if (endpos < pos && endpos > prev) |
2802 | prev = endpos; | |
1d5f4c1d MB |
2803 | else if (endpos == pos && startpos > prev |
2804 | && (!change_req || startpos < pos)) | |
413e06a4 | 2805 | prev = startpos; |
1ab256cb RM |
2806 | } |
2807 | ||
239c932b RS |
2808 | if (next_ptr) |
2809 | *next_ptr = next; | |
2810 | if (prev_ptr) | |
2811 | *prev_ptr = prev; | |
2eec3b4e RS |
2812 | return idx; |
2813 | } | |
74514898 | 2814 | \f |
7723e095 MR |
2815 | /* Find all the overlays in the current buffer that overlap the range |
2816 | BEG-END, or are empty at BEG, or are empty at END provided END | |
2817 | denotes the position at the end of the current buffer. | |
2a3eeee7 | 2818 | |
177c0ea7 | 2819 | Return the number found, and store them in a vector in *VEC_PTR. |
74514898 RS |
2820 | Store in *LEN_PTR the size allocated for the vector. |
2821 | Store in *NEXT_PTR the next position after POS where an overlay starts, | |
2822 | or ZV if there are no more overlays. | |
2823 | Store in *PREV_PTR the previous position before POS where an overlay ends, | |
2824 | or BEGV if there are no previous overlays. | |
2825 | NEXT_PTR and/or PREV_PTR may be 0, meaning don't store that info. | |
2826 | ||
2827 | *VEC_PTR and *LEN_PTR should contain a valid vector and size | |
2828 | when this function is called. | |
2829 | ||
2830 | If EXTEND is non-zero, we make the vector bigger if necessary. | |
2831 | If EXTEND is zero, we never extend the vector, | |
2832 | and we store only as many overlays as will fit. | |
2833 | But we still return the total number of overlays. */ | |
2834 | ||
a9b9a780 | 2835 | static int |
74514898 RS |
2836 | overlays_in (beg, end, extend, vec_ptr, len_ptr, next_ptr, prev_ptr) |
2837 | int beg, end; | |
2838 | int extend; | |
2839 | Lisp_Object **vec_ptr; | |
2840 | int *len_ptr; | |
2841 | int *next_ptr; | |
2842 | int *prev_ptr; | |
2843 | { | |
2410d73a SM |
2844 | Lisp_Object overlay, ostart, oend; |
2845 | struct Lisp_Overlay *tail; | |
74514898 RS |
2846 | int idx = 0; |
2847 | int len = *len_ptr; | |
2848 | Lisp_Object *vec = *vec_ptr; | |
2849 | int next = ZV; | |
2850 | int prev = BEGV; | |
2851 | int inhibit_storing = 0; | |
7723e095 | 2852 | int end_is_Z = end == Z; |
74514898 | 2853 | |
2410d73a | 2854 | for (tail = current_buffer->overlays_before; tail; tail = tail->next) |
74514898 RS |
2855 | { |
2856 | int startpos, endpos; | |
2857 | ||
2410d73a | 2858 | XSETMISC (overlay, tail); |
74514898 RS |
2859 | |
2860 | ostart = OVERLAY_START (overlay); | |
2861 | oend = OVERLAY_END (overlay); | |
2862 | endpos = OVERLAY_POSITION (oend); | |
2863 | if (endpos < beg) | |
2864 | { | |
2865 | if (prev < endpos) | |
2866 | prev = endpos; | |
2867 | break; | |
2868 | } | |
2869 | startpos = OVERLAY_POSITION (ostart); | |
7723e095 MR |
2870 | /* Count an interval if it overlaps the range, is empty at the |
2871 | start of the range, or is empty at END provided END denotes the | |
2872 | end of the buffer. */ | |
74514898 | 2873 | if ((beg < endpos && startpos < end) |
7723e095 MR |
2874 | || (startpos == endpos |
2875 | && (beg == endpos || (end_is_Z && endpos == end)))) | |
74514898 RS |
2876 | { |
2877 | if (idx == len) | |
2878 | { | |
2879 | /* The supplied vector is full. | |
2880 | Either make it bigger, or don't store any more in it. */ | |
2881 | if (extend) | |
2882 | { | |
4b0e44fc RS |
2883 | /* Make it work with an initial len == 0. */ |
2884 | len *= 2; | |
2885 | if (len == 0) | |
2886 | len = 4; | |
2887 | *len_ptr = len; | |
74514898 RS |
2888 | vec = (Lisp_Object *) xrealloc (vec, len * sizeof (Lisp_Object)); |
2889 | *vec_ptr = vec; | |
2890 | } | |
2891 | else | |
2892 | inhibit_storing = 1; | |
2893 | } | |
2894 | ||
2895 | if (!inhibit_storing) | |
2896 | vec[idx] = overlay; | |
2897 | /* Keep counting overlays even if we can't return them all. */ | |
2898 | idx++; | |
2899 | } | |
2900 | else if (startpos < next) | |
2901 | next = startpos; | |
2902 | } | |
2903 | ||
2410d73a | 2904 | for (tail = current_buffer->overlays_after; tail; tail = tail->next) |
74514898 RS |
2905 | { |
2906 | int startpos, endpos; | |
2907 | ||
2410d73a | 2908 | XSETMISC (overlay, tail); |
74514898 RS |
2909 | |
2910 | ostart = OVERLAY_START (overlay); | |
2911 | oend = OVERLAY_END (overlay); | |
2912 | startpos = OVERLAY_POSITION (ostart); | |
2913 | if (end < startpos) | |
2914 | { | |
2915 | if (startpos < next) | |
2916 | next = startpos; | |
2917 | break; | |
2918 | } | |
2919 | endpos = OVERLAY_POSITION (oend); | |
7723e095 MR |
2920 | /* Count an interval if it overlaps the range, is empty at the |
2921 | start of the range, or is empty at END provided END denotes the | |
2922 | end of the buffer. */ | |
74514898 | 2923 | if ((beg < endpos && startpos < end) |
7723e095 MR |
2924 | || (startpos == endpos |
2925 | && (beg == endpos || (end_is_Z && endpos == end)))) | |
74514898 RS |
2926 | { |
2927 | if (idx == len) | |
2928 | { | |
2929 | if (extend) | |
2930 | { | |
4b0e44fc RS |
2931 | /* Make it work with an initial len == 0. */ |
2932 | len *= 2; | |
2933 | if (len == 0) | |
2934 | len = 4; | |
2935 | *len_ptr = len; | |
74514898 RS |
2936 | vec = (Lisp_Object *) xrealloc (vec, len * sizeof (Lisp_Object)); |
2937 | *vec_ptr = vec; | |
2938 | } | |
2939 | else | |
2940 | inhibit_storing = 1; | |
2941 | } | |
2942 | ||
2943 | if (!inhibit_storing) | |
2944 | vec[idx] = overlay; | |
2945 | idx++; | |
2946 | } | |
2947 | else if (endpos < beg && endpos > prev) | |
2948 | prev = endpos; | |
2949 | } | |
fc04fa47 | 2950 | |
74514898 RS |
2951 | if (next_ptr) |
2952 | *next_ptr = next; | |
2953 | if (prev_ptr) | |
2954 | *prev_ptr = prev; | |
2955 | return idx; | |
2956 | } | |
09a22085 GM |
2957 | |
2958 | ||
2959 | /* Return non-zero if there exists an overlay with a non-nil | |
2960 | `mouse-face' property overlapping OVERLAY. */ | |
2961 | ||
2962 | int | |
2963 | mouse_face_overlay_overlaps (overlay) | |
2964 | Lisp_Object overlay; | |
2965 | { | |
2966 | int start = OVERLAY_POSITION (OVERLAY_START (overlay)); | |
2967 | int end = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
bfd8410f | 2968 | int n, i, size; |
09a22085 | 2969 | Lisp_Object *v, tem; |
177c0ea7 | 2970 | |
bfd8410f GM |
2971 | size = 10; |
2972 | v = (Lisp_Object *) alloca (size * sizeof *v); | |
2973 | n = overlays_in (start, end, 0, &v, &size, NULL, NULL); | |
2974 | if (n > size) | |
09a22085 | 2975 | { |
09a22085 GM |
2976 | v = (Lisp_Object *) alloca (n * sizeof *v); |
2977 | overlays_in (start, end, 0, &v, &n, NULL, NULL); | |
2978 | } | |
2979 | ||
2980 | for (i = 0; i < n; ++i) | |
2981 | if (!EQ (v[i], overlay) | |
2982 | && (tem = Foverlay_get (overlay, Qmouse_face), | |
2983 | !NILP (tem))) | |
2984 | break; | |
2985 | ||
2986 | return i < n; | |
2987 | } | |
2988 | ||
2989 | ||
74514898 | 2990 | \f |
fc04fa47 KH |
2991 | /* Fast function to just test if we're at an overlay boundary. */ |
2992 | int | |
2993 | overlay_touches_p (pos) | |
2994 | int pos; | |
2995 | { | |
2410d73a SM |
2996 | Lisp_Object overlay; |
2997 | struct Lisp_Overlay *tail; | |
fc04fa47 | 2998 | |
2410d73a | 2999 | for (tail = current_buffer->overlays_before; tail; tail = tail->next) |
fc04fa47 KH |
3000 | { |
3001 | int endpos; | |
3002 | ||
2410d73a | 3003 | XSETMISC (overlay ,tail); |
8e50cc2d | 3004 | if (!OVERLAYP (overlay)) |
fc04fa47 KH |
3005 | abort (); |
3006 | ||
3007 | endpos = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
3008 | if (endpos < pos) | |
3009 | break; | |
3010 | if (endpos == pos || OVERLAY_POSITION (OVERLAY_START (overlay)) == pos) | |
3011 | return 1; | |
3012 | } | |
3013 | ||
2410d73a | 3014 | for (tail = current_buffer->overlays_after; tail; tail = tail->next) |
fc04fa47 KH |
3015 | { |
3016 | int startpos; | |
3017 | ||
2410d73a | 3018 | XSETMISC (overlay, tail); |
8e50cc2d | 3019 | if (!OVERLAYP (overlay)) |
fc04fa47 KH |
3020 | abort (); |
3021 | ||
3022 | startpos = OVERLAY_POSITION (OVERLAY_START (overlay)); | |
3023 | if (pos < startpos) | |
3024 | break; | |
3025 | if (startpos == pos || OVERLAY_POSITION (OVERLAY_END (overlay)) == pos) | |
3026 | return 1; | |
3027 | } | |
3028 | return 0; | |
3029 | } | |
2eec3b4e | 3030 | \f |
5985d248 KH |
3031 | struct sortvec |
3032 | { | |
3033 | Lisp_Object overlay; | |
3034 | int beg, end; | |
3035 | int priority; | |
3036 | }; | |
3037 | ||
3038 | static int | |
dfcf069d AS |
3039 | compare_overlays (v1, v2) |
3040 | const void *v1, *v2; | |
5985d248 | 3041 | { |
dfcf069d AS |
3042 | const struct sortvec *s1 = (const struct sortvec *) v1; |
3043 | const struct sortvec *s2 = (const struct sortvec *) v2; | |
5985d248 KH |
3044 | if (s1->priority != s2->priority) |
3045 | return s1->priority - s2->priority; | |
3046 | if (s1->beg != s2->beg) | |
3047 | return s1->beg - s2->beg; | |
3048 | if (s1->end != s2->end) | |
3049 | return s2->end - s1->end; | |
3050 | return 0; | |
3051 | } | |
3052 | ||
3053 | /* Sort an array of overlays by priority. The array is modified in place. | |
3054 | The return value is the new size; this may be smaller than the original | |
3055 | size if some of the overlays were invalid or were window-specific. */ | |
3056 | int | |
3057 | sort_overlays (overlay_vec, noverlays, w) | |
3058 | Lisp_Object *overlay_vec; | |
3059 | int noverlays; | |
3060 | struct window *w; | |
3061 | { | |
3062 | int i, j; | |
3063 | struct sortvec *sortvec; | |
3064 | sortvec = (struct sortvec *) alloca (noverlays * sizeof (struct sortvec)); | |
3065 | ||
3066 | /* Put the valid and relevant overlays into sortvec. */ | |
3067 | ||
3068 | for (i = 0, j = 0; i < noverlays; i++) | |
3069 | { | |
0fa767e7 | 3070 | Lisp_Object tem; |
c99fc30f | 3071 | Lisp_Object overlay; |
5985d248 | 3072 | |
c99fc30f | 3073 | overlay = overlay_vec[i]; |
5985d248 KH |
3074 | if (OVERLAY_VALID (overlay) |
3075 | && OVERLAY_POSITION (OVERLAY_START (overlay)) > 0 | |
3076 | && OVERLAY_POSITION (OVERLAY_END (overlay)) > 0) | |
3077 | { | |
0fa767e7 KH |
3078 | /* If we're interested in a specific window, then ignore |
3079 | overlays that are limited to some other window. */ | |
3080 | if (w) | |
5985d248 | 3081 | { |
0fa767e7 KH |
3082 | Lisp_Object window; |
3083 | ||
3084 | window = Foverlay_get (overlay, Qwindow); | |
a7a60ce9 | 3085 | if (WINDOWP (window) && XWINDOW (window) != w) |
0fa767e7 | 3086 | continue; |
5985d248 | 3087 | } |
0fa767e7 KH |
3088 | |
3089 | /* This overlay is good and counts: put it into sortvec. */ | |
3090 | sortvec[j].overlay = overlay; | |
3091 | sortvec[j].beg = OVERLAY_POSITION (OVERLAY_START (overlay)); | |
3092 | sortvec[j].end = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
3093 | tem = Foverlay_get (overlay, Qpriority); | |
3094 | if (INTEGERP (tem)) | |
3095 | sortvec[j].priority = XINT (tem); | |
3096 | else | |
3097 | sortvec[j].priority = 0; | |
3098 | j++; | |
5985d248 KH |
3099 | } |
3100 | } | |
3101 | noverlays = j; | |
3102 | ||
3103 | /* Sort the overlays into the proper order: increasing priority. */ | |
3104 | ||
3105 | if (noverlays > 1) | |
3106 | qsort (sortvec, noverlays, sizeof (struct sortvec), compare_overlays); | |
3107 | ||
3108 | for (i = 0; i < noverlays; i++) | |
3109 | overlay_vec[i] = sortvec[i].overlay; | |
3110 | return (noverlays); | |
3111 | } | |
3112 | \f | |
bbbe9545 KH |
3113 | struct sortstr |
3114 | { | |
cb26008f | 3115 | Lisp_Object string, string2; |
bbbe9545 KH |
3116 | int size; |
3117 | int priority; | |
3118 | }; | |
3119 | ||
e8185fa8 KH |
3120 | struct sortstrlist |
3121 | { | |
3122 | struct sortstr *buf; /* An array that expands as needed; never freed. */ | |
3123 | int size; /* Allocated length of that array. */ | |
3124 | int used; /* How much of the array is currently in use. */ | |
3125 | int bytes; /* Total length of the strings in buf. */ | |
3126 | }; | |
3127 | ||
3128 | /* Buffers for storing information about the overlays touching a given | |
3129 | position. These could be automatic variables in overlay_strings, but | |
3130 | it's more efficient to hold onto the memory instead of repeatedly | |
3131 | allocating and freeing it. */ | |
3132 | static struct sortstrlist overlay_heads, overlay_tails; | |
9492daf2 | 3133 | static unsigned char *overlay_str_buf; |
e8185fa8 KH |
3134 | |
3135 | /* Allocated length of overlay_str_buf. */ | |
3136 | static int overlay_str_len; | |
3137 | ||
bbbe9545 KH |
3138 | /* A comparison function suitable for passing to qsort. */ |
3139 | static int | |
3140 | cmp_for_strings (as1, as2) | |
3141 | char *as1, *as2; | |
3142 | { | |
3143 | struct sortstr *s1 = (struct sortstr *)as1; | |
3144 | struct sortstr *s2 = (struct sortstr *)as2; | |
3145 | if (s1->size != s2->size) | |
3146 | return s2->size - s1->size; | |
3147 | if (s1->priority != s2->priority) | |
3148 | return s1->priority - s2->priority; | |
3149 | return 0; | |
3150 | } | |
3151 | ||
e8185fa8 | 3152 | static void |
cb26008f | 3153 | record_overlay_string (ssl, str, str2, pri, size) |
e8185fa8 | 3154 | struct sortstrlist *ssl; |
cb26008f | 3155 | Lisp_Object str, str2, pri; |
e8185fa8 KH |
3156 | int size; |
3157 | { | |
43d27a72 RS |
3158 | int nbytes; |
3159 | ||
e8185fa8 KH |
3160 | if (ssl->used == ssl->size) |
3161 | { | |
3162 | if (ssl->buf) | |
3163 | ssl->size *= 2; | |
3164 | else | |
3165 | ssl->size = 5; | |
3166 | ssl->buf = ((struct sortstr *) | |
3167 | xrealloc (ssl->buf, ssl->size * sizeof (struct sortstr))); | |
3168 | } | |
3169 | ssl->buf[ssl->used].string = str; | |
cb26008f | 3170 | ssl->buf[ssl->used].string2 = str2; |
e8185fa8 KH |
3171 | ssl->buf[ssl->used].size = size; |
3172 | ssl->buf[ssl->used].priority = (INTEGERP (pri) ? XINT (pri) : 0); | |
3173 | ssl->used++; | |
43d27a72 RS |
3174 | |
3175 | if (NILP (current_buffer->enable_multibyte_characters)) | |
d5db4077 | 3176 | nbytes = SCHARS (str); |
43d27a72 | 3177 | else if (! STRING_MULTIBYTE (str)) |
d5db4077 KR |
3178 | nbytes = count_size_as_multibyte (SDATA (str), |
3179 | SBYTES (str)); | |
43d27a72 | 3180 | else |
d5db4077 | 3181 | nbytes = SBYTES (str); |
43d27a72 RS |
3182 | |
3183 | ssl->bytes += nbytes; | |
3184 | ||
cb26008f | 3185 | if (STRINGP (str2)) |
43d27a72 RS |
3186 | { |
3187 | if (NILP (current_buffer->enable_multibyte_characters)) | |
d5db4077 | 3188 | nbytes = SCHARS (str2); |
43d27a72 | 3189 | else if (! STRING_MULTIBYTE (str2)) |
d5db4077 KR |
3190 | nbytes = count_size_as_multibyte (SDATA (str2), |
3191 | SBYTES (str2)); | |
43d27a72 | 3192 | else |
d5db4077 | 3193 | nbytes = SBYTES (str2); |
43d27a72 RS |
3194 | |
3195 | ssl->bytes += nbytes; | |
3196 | } | |
e8185fa8 | 3197 | } |
bbbe9545 KH |
3198 | |
3199 | /* Return the concatenation of the strings associated with overlays that | |
3200 | begin or end at POS, ignoring overlays that are specific to a window | |
3201 | other than W. The strings are concatenated in the appropriate order: | |
3202 | shorter overlays nest inside longer ones, and higher priority inside | |
cb26008f KH |
3203 | lower. Normally all of the after-strings come first, but zero-sized |
3204 | overlays have their after-strings ride along with the before-strings | |
3205 | because it would look strange to print them inside-out. | |
3206 | ||
3207 | Returns the string length, and stores the contents indirectly through | |
3208 | PSTR, if that variable is non-null. The string may be overwritten by | |
3209 | subsequent calls. */ | |
6b5d3b89 | 3210 | |
bbbe9545 KH |
3211 | int |
3212 | overlay_strings (pos, w, pstr) | |
c2d5b10f | 3213 | EMACS_INT pos; |
bbbe9545 | 3214 | struct window *w; |
6b5d3b89 | 3215 | unsigned char **pstr; |
bbbe9545 | 3216 | { |
2410d73a SM |
3217 | Lisp_Object overlay, window, str; |
3218 | struct Lisp_Overlay *ov; | |
bbbe9545 | 3219 | int startpos, endpos; |
43d27a72 | 3220 | int multibyte = ! NILP (current_buffer->enable_multibyte_characters); |
bbbe9545 | 3221 | |
e8185fa8 KH |
3222 | overlay_heads.used = overlay_heads.bytes = 0; |
3223 | overlay_tails.used = overlay_tails.bytes = 0; | |
2410d73a | 3224 | for (ov = current_buffer->overlays_before; ov; ov = ov->next) |
bbbe9545 | 3225 | { |
2410d73a | 3226 | XSETMISC (overlay, ov); |
c2d5b10f | 3227 | eassert (OVERLAYP (overlay)); |
bbbe9545 KH |
3228 | |
3229 | startpos = OVERLAY_POSITION (OVERLAY_START (overlay)); | |
3230 | endpos = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
3231 | if (endpos < pos) | |
3232 | break; | |
3233 | if (endpos != pos && startpos != pos) | |
3234 | continue; | |
3235 | window = Foverlay_get (overlay, Qwindow); | |
3236 | if (WINDOWP (window) && XWINDOW (window) != w) | |
3237 | continue; | |
e8185fa8 KH |
3238 | if (startpos == pos |
3239 | && (str = Foverlay_get (overlay, Qbefore_string), STRINGP (str))) | |
3240 | record_overlay_string (&overlay_heads, str, | |
cb26008f KH |
3241 | (startpos == endpos |
3242 | ? Foverlay_get (overlay, Qafter_string) | |
3243 | : Qnil), | |
3244 | Foverlay_get (overlay, Qpriority), | |
3245 | endpos - startpos); | |
3246 | else if (endpos == pos | |
3247 | && (str = Foverlay_get (overlay, Qafter_string), STRINGP (str))) | |
3248 | record_overlay_string (&overlay_tails, str, Qnil, | |
e8185fa8 KH |
3249 | Foverlay_get (overlay, Qpriority), |
3250 | endpos - startpos); | |
bbbe9545 | 3251 | } |
2410d73a | 3252 | for (ov = current_buffer->overlays_after; ov; ov = ov->next) |
bbbe9545 | 3253 | { |
2410d73a SM |
3254 | XSETMISC (overlay, ov); |
3255 | eassert (OVERLAYP (overlay)); | |
bbbe9545 KH |
3256 | |
3257 | startpos = OVERLAY_POSITION (OVERLAY_START (overlay)); | |
3258 | endpos = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
3259 | if (startpos > pos) | |
3260 | break; | |
e8185fa8 KH |
3261 | if (endpos != pos && startpos != pos) |
3262 | continue; | |
3263 | window = Foverlay_get (overlay, Qwindow); | |
3264 | if (WINDOWP (window) && XWINDOW (window) != w) | |
3265 | continue; | |
e8185fa8 KH |
3266 | if (startpos == pos |
3267 | && (str = Foverlay_get (overlay, Qbefore_string), STRINGP (str))) | |
3268 | record_overlay_string (&overlay_heads, str, | |
cb26008f KH |
3269 | (startpos == endpos |
3270 | ? Foverlay_get (overlay, Qafter_string) | |
3271 | : Qnil), | |
3272 | Foverlay_get (overlay, Qpriority), | |
3273 | endpos - startpos); | |
3274 | else if (endpos == pos | |
3275 | && (str = Foverlay_get (overlay, Qafter_string), STRINGP (str))) | |
3276 | record_overlay_string (&overlay_tails, str, Qnil, | |
e8185fa8 KH |
3277 | Foverlay_get (overlay, Qpriority), |
3278 | endpos - startpos); | |
bbbe9545 | 3279 | } |
e8185fa8 KH |
3280 | if (overlay_tails.used > 1) |
3281 | qsort (overlay_tails.buf, overlay_tails.used, sizeof (struct sortstr), | |
3282 | cmp_for_strings); | |
3283 | if (overlay_heads.used > 1) | |
3284 | qsort (overlay_heads.buf, overlay_heads.used, sizeof (struct sortstr), | |
3285 | cmp_for_strings); | |
3286 | if (overlay_heads.bytes || overlay_tails.bytes) | |
bbbe9545 | 3287 | { |
e8185fa8 | 3288 | Lisp_Object tem; |
bbbe9545 | 3289 | int i; |
9f4d7cde | 3290 | unsigned char *p; |
e8185fa8 | 3291 | int total = overlay_heads.bytes + overlay_tails.bytes; |
bbbe9545 KH |
3292 | |
3293 | if (total > overlay_str_len) | |
9f4d7cde RS |
3294 | { |
3295 | overlay_str_len = total; | |
3296 | overlay_str_buf = (unsigned char *)xrealloc (overlay_str_buf, | |
3297 | total); | |
3298 | } | |
bbbe9545 | 3299 | p = overlay_str_buf; |
e8185fa8 | 3300 | for (i = overlay_tails.used; --i >= 0;) |
bbbe9545 | 3301 | { |
43d27a72 | 3302 | int nbytes; |
e8185fa8 | 3303 | tem = overlay_tails.buf[i].string; |
d5db4077 KR |
3304 | nbytes = copy_text (SDATA (tem), p, |
3305 | SBYTES (tem), | |
43d27a72 RS |
3306 | STRING_MULTIBYTE (tem), multibyte); |
3307 | p += nbytes; | |
bbbe9545 | 3308 | } |
e8185fa8 | 3309 | for (i = 0; i < overlay_heads.used; ++i) |
bbbe9545 | 3310 | { |
43d27a72 | 3311 | int nbytes; |
e8185fa8 | 3312 | tem = overlay_heads.buf[i].string; |
d5db4077 KR |
3313 | nbytes = copy_text (SDATA (tem), p, |
3314 | SBYTES (tem), | |
43d27a72 RS |
3315 | STRING_MULTIBYTE (tem), multibyte); |
3316 | p += nbytes; | |
cb26008f KH |
3317 | tem = overlay_heads.buf[i].string2; |
3318 | if (STRINGP (tem)) | |
3319 | { | |
d5db4077 KR |
3320 | nbytes = copy_text (SDATA (tem), p, |
3321 | SBYTES (tem), | |
43d27a72 RS |
3322 | STRING_MULTIBYTE (tem), multibyte); |
3323 | p += nbytes; | |
cb26008f | 3324 | } |
bbbe9545 | 3325 | } |
cb26008f KH |
3326 | if (p != overlay_str_buf + total) |
3327 | abort (); | |
bbbe9545 KH |
3328 | if (pstr) |
3329 | *pstr = overlay_str_buf; | |
e8185fa8 | 3330 | return total; |
bbbe9545 | 3331 | } |
e8185fa8 | 3332 | return 0; |
bbbe9545 KH |
3333 | } |
3334 | \f | |
5c4f68f1 | 3335 | /* Shift overlays in BUF's overlay lists, to center the lists at POS. */ |
1ab256cb | 3336 | |
2eec3b4e | 3337 | void |
5c4f68f1 JB |
3338 | recenter_overlay_lists (buf, pos) |
3339 | struct buffer *buf; | |
c2d5b10f | 3340 | EMACS_INT pos; |
2eec3b4e | 3341 | { |
2410d73a SM |
3342 | Lisp_Object overlay, beg, end; |
3343 | struct Lisp_Overlay *prev, *tail, *next; | |
2eec3b4e RS |
3344 | |
3345 | /* See if anything in overlays_before should move to overlays_after. */ | |
3346 | ||
3347 | /* We don't strictly need prev in this loop; it should always be nil. | |
3348 | But we use it for symmetry and in case that should cease to be true | |
3349 | with some future change. */ | |
2410d73a SM |
3350 | prev = NULL; |
3351 | for (tail = buf->overlays_before; tail; prev = tail, tail = next) | |
1ab256cb | 3352 | { |
2410d73a SM |
3353 | next = tail->next; |
3354 | XSETMISC (overlay, tail); | |
2eec3b4e RS |
3355 | |
3356 | /* If the overlay is not valid, get rid of it. */ | |
3357 | if (!OVERLAY_VALID (overlay)) | |
52f8ec73 JB |
3358 | #if 1 |
3359 | abort (); | |
3360 | #else | |
2eec3b4e RS |
3361 | { |
3362 | /* Splice the cons cell TAIL out of overlays_before. */ | |
3363 | if (!NILP (prev)) | |
7539e11f | 3364 | XCDR (prev) = next; |
2eec3b4e | 3365 | else |
5c4f68f1 | 3366 | buf->overlays_before = next; |
2eec3b4e RS |
3367 | tail = prev; |
3368 | continue; | |
3369 | } | |
52f8ec73 | 3370 | #endif |
1ab256cb | 3371 | |
2eec3b4e RS |
3372 | beg = OVERLAY_START (overlay); |
3373 | end = OVERLAY_END (overlay); | |
1ab256cb | 3374 | |
2eec3b4e | 3375 | if (OVERLAY_POSITION (end) > pos) |
1ab256cb | 3376 | { |
2eec3b4e RS |
3377 | /* OVERLAY needs to be moved. */ |
3378 | int where = OVERLAY_POSITION (beg); | |
2410d73a | 3379 | struct Lisp_Overlay *other, *other_prev; |
2eec3b4e RS |
3380 | |
3381 | /* Splice the cons cell TAIL out of overlays_before. */ | |
2410d73a SM |
3382 | if (prev) |
3383 | prev->next = next; | |
2eec3b4e | 3384 | else |
5c4f68f1 | 3385 | buf->overlays_before = next; |
2eec3b4e RS |
3386 | |
3387 | /* Search thru overlays_after for where to put it. */ | |
2410d73a SM |
3388 | other_prev = NULL; |
3389 | for (other = buf->overlays_after; other; | |
3390 | other_prev = other, other = other->next) | |
1ab256cb | 3391 | { |
6af718a4 | 3392 | Lisp_Object otherbeg, otheroverlay; |
2eec3b4e | 3393 | |
2410d73a SM |
3394 | XSETMISC (otheroverlay, other); |
3395 | eassert (OVERLAY_VALID (otheroverlay)); | |
2eec3b4e RS |
3396 | |
3397 | otherbeg = OVERLAY_START (otheroverlay); | |
3398 | if (OVERLAY_POSITION (otherbeg) >= where) | |
3399 | break; | |
1ab256cb | 3400 | } |
2eec3b4e RS |
3401 | |
3402 | /* Add TAIL to overlays_after before OTHER. */ | |
2410d73a SM |
3403 | tail->next = other; |
3404 | if (other_prev) | |
3405 | other_prev->next = tail; | |
1ab256cb | 3406 | else |
5c4f68f1 | 3407 | buf->overlays_after = tail; |
2eec3b4e | 3408 | tail = prev; |
1ab256cb | 3409 | } |
2eec3b4e RS |
3410 | else |
3411 | /* We've reached the things that should stay in overlays_before. | |
3412 | All the rest of overlays_before must end even earlier, | |
3413 | so stop now. */ | |
3414 | break; | |
3415 | } | |
3416 | ||
3417 | /* See if anything in overlays_after should be in overlays_before. */ | |
2410d73a SM |
3418 | prev = NULL; |
3419 | for (tail = buf->overlays_after; tail; prev = tail, tail = next) | |
2eec3b4e | 3420 | { |
2410d73a SM |
3421 | next = tail->next; |
3422 | XSETMISC (overlay, tail); | |
2eec3b4e RS |
3423 | |
3424 | /* If the overlay is not valid, get rid of it. */ | |
3425 | if (!OVERLAY_VALID (overlay)) | |
52f8ec73 JB |
3426 | #if 1 |
3427 | abort (); | |
3428 | #else | |
2eec3b4e RS |
3429 | { |
3430 | /* Splice the cons cell TAIL out of overlays_after. */ | |
3431 | if (!NILP (prev)) | |
7539e11f | 3432 | XCDR (prev) = next; |
2eec3b4e | 3433 | else |
5c4f68f1 | 3434 | buf->overlays_after = next; |
2eec3b4e RS |
3435 | tail = prev; |
3436 | continue; | |
3437 | } | |
52f8ec73 | 3438 | #endif |
2eec3b4e RS |
3439 | |
3440 | beg = OVERLAY_START (overlay); | |
3441 | end = OVERLAY_END (overlay); | |
3442 | ||
3443 | /* Stop looking, when we know that nothing further | |
3444 | can possibly end before POS. */ | |
3445 | if (OVERLAY_POSITION (beg) > pos) | |
3446 | break; | |
3447 | ||
3448 | if (OVERLAY_POSITION (end) <= pos) | |
3449 | { | |
3450 | /* OVERLAY needs to be moved. */ | |
3451 | int where = OVERLAY_POSITION (end); | |
2410d73a | 3452 | struct Lisp_Overlay *other, *other_prev; |
2eec3b4e RS |
3453 | |
3454 | /* Splice the cons cell TAIL out of overlays_after. */ | |
2410d73a SM |
3455 | if (prev) |
3456 | prev->next = next; | |
2eec3b4e | 3457 | else |
5c4f68f1 | 3458 | buf->overlays_after = next; |
2eec3b4e RS |
3459 | |
3460 | /* Search thru overlays_before for where to put it. */ | |
2410d73a SM |
3461 | other_prev = NULL; |
3462 | for (other = buf->overlays_before; other; | |
3463 | other_prev = other, other = other->next) | |
2eec3b4e RS |
3464 | { |
3465 | Lisp_Object otherend, otheroverlay; | |
2eec3b4e | 3466 | |
2410d73a SM |
3467 | XSETMISC (otheroverlay, other); |
3468 | eassert (OVERLAY_VALID (otheroverlay)); | |
2eec3b4e RS |
3469 | |
3470 | otherend = OVERLAY_END (otheroverlay); | |
3471 | if (OVERLAY_POSITION (otherend) <= where) | |
3472 | break; | |
3473 | } | |
3474 | ||
3475 | /* Add TAIL to overlays_before before OTHER. */ | |
2410d73a SM |
3476 | tail->next = other; |
3477 | if (other_prev) | |
3478 | other_prev->next = tail; | |
2eec3b4e | 3479 | else |
5c4f68f1 | 3480 | buf->overlays_before = tail; |
2eec3b4e RS |
3481 | tail = prev; |
3482 | } | |
3483 | } | |
3484 | ||
c2d5b10f | 3485 | buf->overlay_center = pos; |
2eec3b4e | 3486 | } |
2b1bdf65 | 3487 | |
423cdb46 KH |
3488 | void |
3489 | adjust_overlays_for_insert (pos, length) | |
c2d5b10f SM |
3490 | EMACS_INT pos; |
3491 | EMACS_INT length; | |
423cdb46 KH |
3492 | { |
3493 | /* After an insertion, the lists are still sorted properly, | |
3494 | but we may need to update the value of the overlay center. */ | |
c2d5b10f SM |
3495 | if (current_buffer->overlay_center >= pos) |
3496 | current_buffer->overlay_center += length; | |
423cdb46 KH |
3497 | } |
3498 | ||
3499 | void | |
3500 | adjust_overlays_for_delete (pos, length) | |
c2d5b10f SM |
3501 | EMACS_INT pos; |
3502 | EMACS_INT length; | |
423cdb46 | 3503 | { |
c2d5b10f | 3504 | if (current_buffer->overlay_center < pos) |
423cdb46 KH |
3505 | /* The deletion was to our right. No change needed; the before- and |
3506 | after-lists are still consistent. */ | |
3507 | ; | |
c2d5b10f | 3508 | else if (current_buffer->overlay_center > pos + length) |
423cdb46 KH |
3509 | /* The deletion was to our left. We need to adjust the center value |
3510 | to account for the change in position, but the lists are consistent | |
3511 | given the new value. */ | |
c2d5b10f | 3512 | current_buffer->overlay_center -= length; |
423cdb46 KH |
3513 | else |
3514 | /* We're right in the middle. There might be things on the after-list | |
3515 | that now belong on the before-list. Recentering will move them, | |
3516 | and also update the center point. */ | |
3517 | recenter_overlay_lists (current_buffer, pos); | |
3518 | } | |
3519 | ||
2b1bdf65 KH |
3520 | /* Fix up overlays that were garbled as a result of permuting markers |
3521 | in the range START through END. Any overlay with at least one | |
3522 | endpoint in this range will need to be unlinked from the overlay | |
3523 | list and reinserted in its proper place. | |
3524 | Such an overlay might even have negative size at this point. | |
6b61353c | 3525 | If so, we'll make the overlay empty. */ |
2b1bdf65 | 3526 | void |
6b61353c | 3527 | fix_start_end_in_overlays (start, end) |
2b1bdf65 KH |
3528 | register int start, end; |
3529 | { | |
6af718a4 | 3530 | Lisp_Object overlay; |
2410d73a | 3531 | struct Lisp_Overlay *before_list, *after_list; |
1138e742 KR |
3532 | /* These are either nil, indicating that before_list or after_list |
3533 | should be assigned, or the cons cell the cdr of which should be | |
3534 | assigned. */ | |
2410d73a | 3535 | struct Lisp_Overlay *beforep = NULL, *afterp = NULL; |
1138e742 KR |
3536 | /* 'Parent', likewise, indicates a cons cell or |
3537 | current_buffer->overlays_before or overlays_after, depending | |
3538 | which loop we're in. */ | |
2410d73a | 3539 | struct Lisp_Overlay *tail, *parent; |
2b1bdf65 KH |
3540 | int startpos, endpos; |
3541 | ||
3542 | /* This algorithm shifts links around instead of consing and GCing. | |
3543 | The loop invariant is that before_list (resp. after_list) is a | |
1138e742 KR |
3544 | well-formed list except that its last element, the CDR of beforep |
3545 | (resp. afterp) if beforep (afterp) isn't nil or before_list | |
3546 | (after_list) if it is, is still uninitialized. So it's not a bug | |
3547 | that before_list isn't initialized, although it may look | |
3548 | strange. */ | |
2410d73a | 3549 | for (parent = NULL, tail = current_buffer->overlays_before; tail;) |
2b1bdf65 | 3550 | { |
2410d73a | 3551 | XSETMISC (overlay, tail); |
6b61353c | 3552 | |
2b1bdf65 | 3553 | endpos = OVERLAY_POSITION (OVERLAY_END (overlay)); |
6b61353c KH |
3554 | startpos = OVERLAY_POSITION (OVERLAY_START (overlay)); |
3555 | ||
3556 | /* If the overlay is backwards, make it empty. */ | |
3557 | if (endpos < startpos) | |
3558 | { | |
3559 | startpos = endpos; | |
3560 | Fset_marker (OVERLAY_START (overlay), make_number (startpos), | |
3561 | Qnil); | |
3562 | } | |
3563 | ||
2b1bdf65 KH |
3564 | if (endpos < start) |
3565 | break; | |
60ebfdf3 | 3566 | |
2b1bdf65 KH |
3567 | if (endpos < end |
3568 | || (startpos >= start && startpos < end)) | |
3569 | { | |
2b1bdf65 KH |
3570 | /* Add it to the end of the wrong list. Later on, |
3571 | recenter_overlay_lists will move it to the right place. */ | |
c2d5b10f | 3572 | if (endpos < current_buffer->overlay_center) |
2b1bdf65 | 3573 | { |
2410d73a | 3574 | if (!afterp) |
1138e742 KR |
3575 | after_list = tail; |
3576 | else | |
2410d73a | 3577 | afterp->next = tail; |
1138e742 | 3578 | afterp = tail; |
2b1bdf65 KH |
3579 | } |
3580 | else | |
3581 | { | |
2410d73a | 3582 | if (!beforep) |
1138e742 KR |
3583 | before_list = tail; |
3584 | else | |
2410d73a | 3585 | beforep->next = tail; |
1138e742 | 3586 | beforep = tail; |
2b1bdf65 | 3587 | } |
2410d73a SM |
3588 | if (!parent) |
3589 | current_buffer->overlays_before = tail->next; | |
1138e742 | 3590 | else |
2410d73a SM |
3591 | parent->next = tail->next; |
3592 | tail = tail->next; | |
2b1bdf65 KH |
3593 | } |
3594 | else | |
2410d73a | 3595 | parent = tail, tail = parent->next; |
2b1bdf65 | 3596 | } |
2410d73a | 3597 | for (parent = NULL, tail = current_buffer->overlays_after; tail;) |
2b1bdf65 | 3598 | { |
2410d73a | 3599 | XSETMISC (overlay, tail); |
6b61353c | 3600 | |
2b1bdf65 | 3601 | startpos = OVERLAY_POSITION (OVERLAY_START (overlay)); |
6b61353c KH |
3602 | endpos = OVERLAY_POSITION (OVERLAY_END (overlay)); |
3603 | ||
3604 | /* If the overlay is backwards, make it empty. */ | |
3605 | if (endpos < startpos) | |
3606 | { | |
3607 | startpos = endpos; | |
3608 | Fset_marker (OVERLAY_START (overlay), make_number (startpos), | |
60ebfdf3 | 3609 | Qnil); |
6b61353c KH |
3610 | } |
3611 | ||
2b1bdf65 KH |
3612 | if (startpos >= end) |
3613 | break; | |
6b61353c | 3614 | |
2b1bdf65 KH |
3615 | if (startpos >= start |
3616 | || (endpos >= start && endpos < end)) | |
3617 | { | |
c2d5b10f | 3618 | if (endpos < current_buffer->overlay_center) |
2b1bdf65 | 3619 | { |
2410d73a | 3620 | if (!afterp) |
1138e742 KR |
3621 | after_list = tail; |
3622 | else | |
2410d73a | 3623 | afterp->next = tail; |
1138e742 | 3624 | afterp = tail; |
2b1bdf65 KH |
3625 | } |
3626 | else | |
3627 | { | |
2410d73a | 3628 | if (!beforep) |
1138e742 KR |
3629 | before_list = tail; |
3630 | else | |
2410d73a | 3631 | beforep->next = tail; |
1138e742 | 3632 | beforep = tail; |
2b1bdf65 | 3633 | } |
2410d73a SM |
3634 | if (!parent) |
3635 | current_buffer->overlays_after = tail->next; | |
1138e742 | 3636 | else |
2410d73a SM |
3637 | parent->next = tail->next; |
3638 | tail = tail->next; | |
2b1bdf65 KH |
3639 | } |
3640 | else | |
2410d73a | 3641 | parent = tail, tail = parent->next; |
2b1bdf65 KH |
3642 | } |
3643 | ||
3644 | /* Splice the constructed (wrong) lists into the buffer's lists, | |
3645 | and let the recenter function make it sane again. */ | |
2410d73a | 3646 | if (beforep) |
1138e742 | 3647 | { |
2410d73a | 3648 | beforep->next = current_buffer->overlays_before; |
1138e742 KR |
3649 | current_buffer->overlays_before = before_list; |
3650 | } | |
c2d5b10f | 3651 | recenter_overlay_lists (current_buffer, current_buffer->overlay_center); |
2b1bdf65 | 3652 | |
2410d73a | 3653 | if (afterp) |
1138e742 | 3654 | { |
2410d73a | 3655 | afterp->next = current_buffer->overlays_after; |
1138e742 KR |
3656 | current_buffer->overlays_after = after_list; |
3657 | } | |
c2d5b10f | 3658 | recenter_overlay_lists (current_buffer, current_buffer->overlay_center); |
2b1bdf65 | 3659 | } |
3b06f880 KH |
3660 | |
3661 | /* We have two types of overlay: the one whose ending marker is | |
3662 | after-insertion-marker (this is the usual case) and the one whose | |
3663 | ending marker is before-insertion-marker. When `overlays_before' | |
3664 | contains overlays of the latter type and the former type in this | |
3665 | order and both overlays end at inserting position, inserting a text | |
3666 | increases only the ending marker of the latter type, which results | |
3667 | in incorrect ordering of `overlays_before'. | |
3668 | ||
3669 | This function fixes ordering of overlays in the slot | |
3670 | `overlays_before' of the buffer *BP. Before the insertion, `point' | |
3671 | was at PREV, and now is at POS. */ | |
3672 | ||
01136e9b | 3673 | void |
3b06f880 KH |
3674 | fix_overlays_before (bp, prev, pos) |
3675 | struct buffer *bp; | |
c2d5b10f | 3676 | EMACS_INT prev, pos; |
3b06f880 | 3677 | { |
2410d73a SM |
3678 | /* If parent is nil, replace overlays_before; otherwise, parent->next. */ |
3679 | struct Lisp_Overlay *tail = bp->overlays_before, *parent = NULL, *right_pair; | |
3680 | Lisp_Object tem; | |
c2d5b10f | 3681 | EMACS_INT end; |
3b06f880 KH |
3682 | |
3683 | /* After the insertion, the several overlays may be in incorrect | |
3684 | order. The possibility is that, in the list `overlays_before', | |
3685 | an overlay which ends at POS appears after an overlay which ends | |
3686 | at PREV. Since POS is greater than PREV, we must fix the | |
3687 | ordering of these overlays, by moving overlays ends at POS before | |
3688 | the overlays ends at PREV. */ | |
3689 | ||
3690 | /* At first, find a place where disordered overlays should be linked | |
3691 | in. It is where an overlay which end before POS exists. (i.e. an | |
3692 | overlay whose ending marker is after-insertion-marker if disorder | |
3693 | exists). */ | |
2410d73a SM |
3694 | while (tail |
3695 | && (XSETMISC (tem, tail), | |
3696 | (end = OVERLAY_POSITION (OVERLAY_END (tem))) >= pos)) | |
1138e742 KR |
3697 | { |
3698 | parent = tail; | |
2410d73a | 3699 | tail = tail->next; |
1138e742 | 3700 | } |
3b06f880 KH |
3701 | |
3702 | /* If we don't find such an overlay, | |
3703 | or the found one ends before PREV, | |
3704 | or the found one is the last one in the list, | |
3705 | we don't have to fix anything. */ | |
f93ad4cf | 3706 | if (!tail || end < prev || !tail->next) |
3b06f880 KH |
3707 | return; |
3708 | ||
1138e742 KR |
3709 | right_pair = parent; |
3710 | parent = tail; | |
2410d73a | 3711 | tail = tail->next; |
3b06f880 | 3712 | |
1138e742 | 3713 | /* Now, end position of overlays in the list TAIL should be before |
3b06f880 | 3714 | or equal to PREV. In the loop, an overlay which ends at POS is |
1138e742 KR |
3715 | moved ahead to the place indicated by the CDR of RIGHT_PAIR. If |
3716 | we found an overlay which ends before PREV, the remaining | |
3717 | overlays are in correct order. */ | |
2410d73a | 3718 | while (tail) |
3b06f880 | 3719 | { |
2410d73a SM |
3720 | XSETMISC (tem, tail); |
3721 | end = OVERLAY_POSITION (OVERLAY_END (tem)); | |
3b06f880 KH |
3722 | |
3723 | if (end == pos) | |
3724 | { /* This overlay is disordered. */ | |
2410d73a | 3725 | struct Lisp_Overlay *found = tail; |
3b06f880 KH |
3726 | |
3727 | /* Unlink the found overlay. */ | |
2410d73a SM |
3728 | tail = found->next; |
3729 | parent->next = tail; | |
1138e742 KR |
3730 | /* Move an overlay at RIGHT_PLACE to the next of the found one, |
3731 | and link it into the right place. */ | |
2410d73a | 3732 | if (!right_pair) |
1138e742 | 3733 | { |
2410d73a | 3734 | found->next = bp->overlays_before; |
1138e742 KR |
3735 | bp->overlays_before = found; |
3736 | } | |
3737 | else | |
3738 | { | |
2410d73a SM |
3739 | found->next = right_pair->next; |
3740 | right_pair->next = found; | |
1138e742 | 3741 | } |
3b06f880 KH |
3742 | } |
3743 | else if (end == prev) | |
1138e742 KR |
3744 | { |
3745 | parent = tail; | |
2410d73a | 3746 | tail = tail->next; |
1138e742 | 3747 | } |
3b06f880 KH |
3748 | else /* No more disordered overlay. */ |
3749 | break; | |
3750 | } | |
3751 | } | |
2eec3b4e | 3752 | \f |
52f8ec73 | 3753 | DEFUN ("overlayp", Foverlayp, Soverlayp, 1, 1, 0, |
7ee72033 MB |
3754 | doc: /* Return t if OBJECT is an overlay. */) |
3755 | (object) | |
52f8ec73 JB |
3756 | Lisp_Object object; |
3757 | { | |
3758 | return (OVERLAYP (object) ? Qt : Qnil); | |
3759 | } | |
3760 | ||
acac2700 | 3761 | DEFUN ("make-overlay", Fmake_overlay, Smake_overlay, 2, 5, 0, |
7ee72033 | 3762 | doc: /* Create a new overlay with range BEG to END in BUFFER. |
018ba359 PJ |
3763 | If omitted, BUFFER defaults to the current buffer. |
3764 | BEG and END may be integers or markers. | |
a625ee20 RS |
3765 | The fourth arg FRONT-ADVANCE, if non-nil, makes the marker |
3766 | for the front of the overlay advance when text is inserted there | |
63af6055 | 3767 | \(which means the text *is not* included in the overlay). |
a625ee20 RS |
3768 | The fifth arg REAR-ADVANCE, if non-nil, makes the marker |
3769 | for the rear of the overlay advance when text is inserted there | |
63af6055 | 3770 | \(which means the text *is* included in the overlay). */) |
7ee72033 | 3771 | (beg, end, buffer, front_advance, rear_advance) |
5c4f68f1 | 3772 | Lisp_Object beg, end, buffer; |
acac2700 | 3773 | Lisp_Object front_advance, rear_advance; |
2eec3b4e RS |
3774 | { |
3775 | Lisp_Object overlay; | |
5c4f68f1 | 3776 | struct buffer *b; |
2eec3b4e | 3777 | |
5c4f68f1 | 3778 | if (NILP (buffer)) |
67180c6a | 3779 | XSETBUFFER (buffer, current_buffer); |
883047b9 | 3780 | else |
b7826503 | 3781 | CHECK_BUFFER (buffer); |
883047b9 JB |
3782 | if (MARKERP (beg) |
3783 | && ! EQ (Fmarker_buffer (beg), buffer)) | |
3784 | error ("Marker points into wrong buffer"); | |
3785 | if (MARKERP (end) | |
3786 | && ! EQ (Fmarker_buffer (end), buffer)) | |
3787 | error ("Marker points into wrong buffer"); | |
2eec3b4e | 3788 | |
b7826503 PJ |
3789 | CHECK_NUMBER_COERCE_MARKER (beg); |
3790 | CHECK_NUMBER_COERCE_MARKER (end); | |
5c4f68f1 | 3791 | |
883047b9 | 3792 | if (XINT (beg) > XINT (end)) |
5c4f68f1 | 3793 | { |
c99fc30f KH |
3794 | Lisp_Object temp; |
3795 | temp = beg; beg = end; end = temp; | |
5c4f68f1 | 3796 | } |
883047b9 JB |
3797 | |
3798 | b = XBUFFER (buffer); | |
3799 | ||
3800 | beg = Fset_marker (Fmake_marker (), beg, buffer); | |
3801 | end = Fset_marker (Fmake_marker (), end, buffer); | |
5c4f68f1 | 3802 | |
acac2700 RS |
3803 | if (!NILP (front_advance)) |
3804 | XMARKER (beg)->insertion_type = 1; | |
3805 | if (!NILP (rear_advance)) | |
3806 | XMARKER (end)->insertion_type = 1; | |
597dd755 | 3807 | |
48e2e3ba | 3808 | overlay = allocate_misc (); |
89ca3e1b | 3809 | XMISCTYPE (overlay) = Lisp_Misc_Overlay; |
48e2e3ba KH |
3810 | XOVERLAY (overlay)->start = beg; |
3811 | XOVERLAY (overlay)->end = end; | |
3812 | XOVERLAY (overlay)->plist = Qnil; | |
2410d73a | 3813 | XOVERLAY (overlay)->next = NULL; |
2eec3b4e | 3814 | |
177c0ea7 | 3815 | /* Put the new overlay on the wrong list. */ |
2eec3b4e | 3816 | end = OVERLAY_END (overlay); |
c2d5b10f | 3817 | if (OVERLAY_POSITION (end) < b->overlay_center) |
2410d73a SM |
3818 | { |
3819 | if (b->overlays_after) | |
3820 | XOVERLAY (overlay)->next = b->overlays_after; | |
3821 | b->overlays_after = XOVERLAY (overlay); | |
3822 | } | |
2eec3b4e | 3823 | else |
2410d73a SM |
3824 | { |
3825 | if (b->overlays_before) | |
3826 | XOVERLAY (overlay)->next = b->overlays_before; | |
3827 | b->overlays_before = XOVERLAY (overlay); | |
3828 | } | |
2eec3b4e RS |
3829 | |
3830 | /* This puts it in the right list, and in the right order. */ | |
c2d5b10f | 3831 | recenter_overlay_lists (b, b->overlay_center); |
2eec3b4e | 3832 | |
b61982dd JB |
3833 | /* We don't need to redisplay the region covered by the overlay, because |
3834 | the overlay has no properties at the moment. */ | |
3835 | ||
2eec3b4e RS |
3836 | return overlay; |
3837 | } | |
876aa27c RS |
3838 | \f |
3839 | /* Mark a section of BUF as needing redisplay because of overlays changes. */ | |
3840 | ||
3841 | static void | |
3842 | modify_overlay (buf, start, end) | |
3843 | struct buffer *buf; | |
c2d5b10f | 3844 | EMACS_INT start, end; |
876aa27c | 3845 | { |
876aa27c RS |
3846 | if (start > end) |
3847 | { | |
3848 | int temp = start; | |
26f545d7 GM |
3849 | start = end; |
3850 | end = temp; | |
876aa27c RS |
3851 | } |
3852 | ||
481b5054 | 3853 | BUF_COMPUTE_UNCHANGED (buf, start, end); |
177c0ea7 | 3854 | |
876aa27c RS |
3855 | /* If this is a buffer not in the selected window, |
3856 | we must do other windows. */ | |
3857 | if (buf != XBUFFER (XWINDOW (selected_window)->buffer)) | |
3858 | windows_or_buffers_changed = 1; | |
876aa27c RS |
3859 | /* If multiple windows show this buffer, we must do other windows. */ |
3860 | else if (buffer_shared > 1) | |
3861 | windows_or_buffers_changed = 1; | |
18700091 KS |
3862 | /* If we modify an overlay at the end of the buffer, we cannot |
3863 | be sure that window end is still valid. */ | |
3864 | else if (end >= ZV && start <= ZV) | |
3865 | windows_or_buffers_changed = 1; | |
876aa27c | 3866 | |
d8b9150f | 3867 | ++BUF_OVERLAY_MODIFF (buf); |
876aa27c | 3868 | } |
2eec3b4e | 3869 | |
018ba359 | 3870 | \f |
2e34157c RS |
3871 | Lisp_Object Fdelete_overlay (); |
3872 | ||
2410d73a SM |
3873 | static struct Lisp_Overlay * |
3874 | unchain_overlay (list, overlay) | |
3875 | struct Lisp_Overlay *list, *overlay; | |
3876 | { | |
3877 | struct Lisp_Overlay *tmp, *prev; | |
3878 | for (tmp = list, prev = NULL; tmp; prev = tmp, tmp = tmp->next) | |
3879 | if (tmp == overlay) | |
3880 | { | |
3881 | if (prev) | |
3882 | prev->next = tmp->next; | |
3883 | else | |
3884 | list = tmp->next; | |
3885 | overlay->next = NULL; | |
3886 | break; | |
3887 | } | |
3888 | return list; | |
3889 | } | |
3890 | ||
5c4f68f1 | 3891 | DEFUN ("move-overlay", Fmove_overlay, Smove_overlay, 3, 4, 0, |
7ee72033 | 3892 | doc: /* Set the endpoints of OVERLAY to BEG and END in BUFFER. |
018ba359 PJ |
3893 | If BUFFER is omitted, leave OVERLAY in the same buffer it inhabits now. |
3894 | If BUFFER is omitted, and OVERLAY is in no buffer, put it in the current | |
7ee72033 MB |
3895 | buffer. */) |
3896 | (overlay, beg, end, buffer) | |
5c4f68f1 | 3897 | Lisp_Object overlay, beg, end, buffer; |
2eec3b4e | 3898 | { |
0a4469c9 RS |
3899 | struct buffer *b, *ob; |
3900 | Lisp_Object obuffer; | |
aed13378 | 3901 | int count = SPECPDL_INDEX (); |
5c4f68f1 | 3902 | |
b7826503 | 3903 | CHECK_OVERLAY (overlay); |
5c4f68f1 JB |
3904 | if (NILP (buffer)) |
3905 | buffer = Fmarker_buffer (OVERLAY_START (overlay)); | |
3ece337a | 3906 | if (NILP (buffer)) |
67180c6a | 3907 | XSETBUFFER (buffer, current_buffer); |
b7826503 | 3908 | CHECK_BUFFER (buffer); |
883047b9 JB |
3909 | |
3910 | if (MARKERP (beg) | |
3911 | && ! EQ (Fmarker_buffer (beg), buffer)) | |
3912 | error ("Marker points into wrong buffer"); | |
3913 | if (MARKERP (end) | |
3914 | && ! EQ (Fmarker_buffer (end), buffer)) | |
3915 | error ("Marker points into wrong buffer"); | |
3916 | ||
b7826503 PJ |
3917 | CHECK_NUMBER_COERCE_MARKER (beg); |
3918 | CHECK_NUMBER_COERCE_MARKER (end); | |
b61982dd | 3919 | |
9d7608b7 KH |
3920 | if (XINT (beg) == XINT (end) && ! NILP (Foverlay_get (overlay, Qevaporate))) |
3921 | return Fdelete_overlay (overlay); | |
0a4469c9 | 3922 | |
b61982dd JB |
3923 | if (XINT (beg) > XINT (end)) |
3924 | { | |
c99fc30f KH |
3925 | Lisp_Object temp; |
3926 | temp = beg; beg = end; end = temp; | |
b61982dd JB |
3927 | } |
3928 | ||
9d7608b7 KH |
3929 | specbind (Qinhibit_quit, Qt); |
3930 | ||
0a4469c9 | 3931 | obuffer = Fmarker_buffer (OVERLAY_START (overlay)); |
5c4f68f1 | 3932 | b = XBUFFER (buffer); |
8801a864 | 3933 | ob = BUFFERP (obuffer) ? XBUFFER (obuffer) : (struct buffer *) 0; |
2eec3b4e | 3934 | |
c82ed728 | 3935 | /* If the overlay has changed buffers, do a thorough redisplay. */ |
0a4469c9 | 3936 | if (!EQ (buffer, obuffer)) |
50760c4a RS |
3937 | { |
3938 | /* Redisplay where the overlay was. */ | |
3939 | if (!NILP (obuffer)) | |
3940 | { | |
2e34157c RS |
3941 | int o_beg; |
3942 | int o_end; | |
50760c4a | 3943 | |
80509f2f RS |
3944 | o_beg = OVERLAY_POSITION (OVERLAY_START (overlay)); |
3945 | o_end = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
50760c4a | 3946 | |
2e34157c | 3947 | modify_overlay (ob, o_beg, o_end); |
50760c4a RS |
3948 | } |
3949 | ||
3950 | /* Redisplay where the overlay is going to be. */ | |
876aa27c | 3951 | modify_overlay (b, XINT (beg), XINT (end)); |
50760c4a | 3952 | } |
c82ed728 JB |
3953 | else |
3954 | /* Redisplay the area the overlay has just left, or just enclosed. */ | |
3955 | { | |
2e34157c | 3956 | int o_beg, o_end; |
c82ed728 | 3957 | |
80509f2f RS |
3958 | o_beg = OVERLAY_POSITION (OVERLAY_START (overlay)); |
3959 | o_end = OVERLAY_POSITION (OVERLAY_END (overlay)); | |
c82ed728 | 3960 | |
2e34157c RS |
3961 | if (o_beg == XINT (beg)) |
3962 | modify_overlay (b, o_end, XINT (end)); | |
3963 | else if (o_end == XINT (end)) | |
3964 | modify_overlay (b, o_beg, XINT (beg)); | |
c82ed728 JB |
3965 | else |
3966 | { | |
2e34157c RS |
3967 | if (XINT (beg) < o_beg) o_beg = XINT (beg); |
3968 | if (XINT (end) > o_end) o_end = XINT (end); | |
3969 | modify_overlay (b, o_beg, o_end); | |
c82ed728 JB |
3970 | } |
3971 | } | |
b61982dd | 3972 | |
0a4469c9 RS |
3973 | if (!NILP (obuffer)) |
3974 | { | |
2410d73a SM |
3975 | ob->overlays_before |
3976 | = unchain_overlay (ob->overlays_before, XOVERLAY (overlay)); | |
3977 | ob->overlays_after | |
3978 | = unchain_overlay (ob->overlays_after, XOVERLAY (overlay)); | |
3979 | eassert (XOVERLAY (overlay)->next == NULL); | |
0a4469c9 | 3980 | } |
5c4f68f1 JB |
3981 | |
3982 | Fset_marker (OVERLAY_START (overlay), beg, buffer); | |
3983 | Fset_marker (OVERLAY_END (overlay), end, buffer); | |
2eec3b4e | 3984 | |
177c0ea7 | 3985 | /* Put the overlay on the wrong list. */ |
2eec3b4e | 3986 | end = OVERLAY_END (overlay); |
c2d5b10f | 3987 | if (OVERLAY_POSITION (end) < b->overlay_center) |
2410d73a | 3988 | { |
8f924df7 KH |
3989 | XOVERLAY (overlay)->next = b->overlays_after; |
3990 | b->overlays_after = XOVERLAY (overlay); | |
2410d73a | 3991 | } |
2eec3b4e | 3992 | else |
2410d73a | 3993 | { |
8f924df7 KH |
3994 | XOVERLAY (overlay)->next = b->overlays_before; |
3995 | b->overlays_before = XOVERLAY (overlay); | |
2410d73a | 3996 | } |
2eec3b4e RS |
3997 | |
3998 | /* This puts it in the right list, and in the right order. */ | |
c2d5b10f | 3999 | recenter_overlay_lists (b, b->overlay_center); |
2eec3b4e | 4000 | |
0a4469c9 | 4001 | return unbind_to (count, overlay); |
2eec3b4e RS |
4002 | } |
4003 | ||
4004 | DEFUN ("delete-overlay", Fdelete_overlay, Sdelete_overlay, 1, 1, 0, | |
7ee72033 MB |
4005 | doc: /* Delete the overlay OVERLAY from its buffer. */) |
4006 | (overlay) | |
5c4f68f1 | 4007 | Lisp_Object overlay; |
2eec3b4e | 4008 | { |
0a4469c9 | 4009 | Lisp_Object buffer; |
5c4f68f1 | 4010 | struct buffer *b; |
aed13378 | 4011 | int count = SPECPDL_INDEX (); |
5c4f68f1 | 4012 | |
b7826503 | 4013 | CHECK_OVERLAY (overlay); |
52f8ec73 | 4014 | |
0a4469c9 RS |
4015 | buffer = Fmarker_buffer (OVERLAY_START (overlay)); |
4016 | if (NILP (buffer)) | |
4017 | return Qnil; | |
4018 | ||
4019 | b = XBUFFER (buffer); | |
0a4469c9 | 4020 | specbind (Qinhibit_quit, Qt); |
177c0ea7 | 4021 | |
2410d73a SM |
4022 | b->overlays_before = unchain_overlay (b->overlays_before,XOVERLAY (overlay)); |
4023 | b->overlays_after = unchain_overlay (b->overlays_after, XOVERLAY (overlay)); | |
4024 | eassert (XOVERLAY (overlay)->next == NULL); | |
876aa27c | 4025 | modify_overlay (b, |
8231a9aa RS |
4026 | marker_position (OVERLAY_START (overlay)), |
4027 | marker_position (OVERLAY_END (overlay))); | |
3ece337a JB |
4028 | Fset_marker (OVERLAY_START (overlay), Qnil, Qnil); |
4029 | Fset_marker (OVERLAY_END (overlay), Qnil, Qnil); | |
4030 | ||
e58c389d | 4031 | /* When deleting an overlay with before or after strings, turn off |
26f545d7 GM |
4032 | display optimizations for the affected buffer, on the basis that |
4033 | these strings may contain newlines. This is easier to do than to | |
4034 | check for that situation during redisplay. */ | |
4035 | if (!windows_or_buffers_changed | |
4036 | && (!NILP (Foverlay_get (overlay, Qbefore_string)) | |
4037 | || !NILP (Foverlay_get (overlay, Qafter_string)))) | |
4038 | b->prevent_redisplay_optimizations_p = 1; | |
4039 | ||
0a4469c9 | 4040 | return unbind_to (count, Qnil); |
2eec3b4e RS |
4041 | } |
4042 | \f | |
8ebafa8d JB |
4043 | /* Overlay dissection functions. */ |
4044 | ||
4045 | DEFUN ("overlay-start", Foverlay_start, Soverlay_start, 1, 1, 0, | |
7ee72033 MB |
4046 | doc: /* Return the position at which OVERLAY starts. */) |
4047 | (overlay) | |
8ebafa8d JB |
4048 | Lisp_Object overlay; |
4049 | { | |
b7826503 | 4050 | CHECK_OVERLAY (overlay); |
8ebafa8d JB |
4051 | |
4052 | return (Fmarker_position (OVERLAY_START (overlay))); | |
4053 | } | |
4054 | ||
4055 | DEFUN ("overlay-end", Foverlay_end, Soverlay_end, 1, 1, 0, | |
7ee72033 MB |
4056 | doc: /* Return the position at which OVERLAY ends. */) |
4057 | (overlay) | |
8ebafa8d JB |
4058 | Lisp_Object overlay; |
4059 | { | |
b7826503 | 4060 | CHECK_OVERLAY (overlay); |
8ebafa8d JB |
4061 | |
4062 | return (Fmarker_position (OVERLAY_END (overlay))); | |
4063 | } | |
4064 | ||
4065 | DEFUN ("overlay-buffer", Foverlay_buffer, Soverlay_buffer, 1, 1, 0, | |
563f7128 LK |
4066 | doc: /* Return the buffer OVERLAY belongs to. |
4067 | Return nil if OVERLAY has been deleted. */) | |
7ee72033 | 4068 | (overlay) |
8ebafa8d JB |
4069 | Lisp_Object overlay; |
4070 | { | |
b7826503 | 4071 | CHECK_OVERLAY (overlay); |
8ebafa8d JB |
4072 | |
4073 | return Fmarker_buffer (OVERLAY_START (overlay)); | |
4074 | } | |
4075 | ||
4076 | DEFUN ("overlay-properties", Foverlay_properties, Soverlay_properties, 1, 1, 0, | |
7ee72033 | 4077 | doc: /* Return a list of the properties on OVERLAY. |
018ba359 | 4078 | This is a copy of OVERLAY's plist; modifying its conses has no effect on |
7ee72033 MB |
4079 | OVERLAY. */) |
4080 | (overlay) | |
8ebafa8d JB |
4081 | Lisp_Object overlay; |
4082 | { | |
b7826503 | 4083 | CHECK_OVERLAY (overlay); |
8ebafa8d | 4084 | |
48e2e3ba | 4085 | return Fcopy_sequence (XOVERLAY (overlay)->plist); |
8ebafa8d JB |
4086 | } |
4087 | ||
4088 | \f | |
2eec3b4e | 4089 | DEFUN ("overlays-at", Foverlays_at, Soverlays_at, 1, 1, 0, |
aabc29c8 | 4090 | doc: /* Return a list of the overlays that contain the character at POS. */) |
7ee72033 | 4091 | (pos) |
2eec3b4e RS |
4092 | Lisp_Object pos; |
4093 | { | |
4094 | int noverlays; | |
2eec3b4e RS |
4095 | Lisp_Object *overlay_vec; |
4096 | int len; | |
4097 | Lisp_Object result; | |
4098 | ||
b7826503 | 4099 | CHECK_NUMBER_COERCE_MARKER (pos); |
2eec3b4e RS |
4100 | |
4101 | len = 10; | |
a9800ae8 | 4102 | /* We can't use alloca here because overlays_at can call xrealloc. */ |
2eec3b4e RS |
4103 | overlay_vec = (Lisp_Object *) xmalloc (len * sizeof (Lisp_Object)); |
4104 | ||
4105 | /* Put all the overlays we want in a vector in overlay_vec. | |
4106 | Store the length in len. */ | |
2a77a7d7 | 4107 | noverlays = overlays_at (XINT (pos), 1, &overlay_vec, &len, |
0f8b27ea | 4108 | (EMACS_INT *) 0, (EMACS_INT *) 0, 0); |
2eec3b4e RS |
4109 | |
4110 | /* Make a list of them all. */ | |
4111 | result = Flist (noverlays, overlay_vec); | |
4112 | ||
9ac0d9e0 | 4113 | xfree (overlay_vec); |
2eec3b4e RS |
4114 | return result; |
4115 | } | |
4116 | ||
74514898 | 4117 | DEFUN ("overlays-in", Foverlays_in, Soverlays_in, 2, 2, 0, |
7ee72033 | 4118 | doc: /* Return a list of the overlays that overlap the region BEG ... END. |
018ba359 PJ |
4119 | Overlap means that at least one character is contained within the overlay |
4120 | and also contained within the specified region. | |
7723e095 MR |
4121 | Empty overlays are included in the result if they are located at BEG, |
4122 | between BEG and END, or at END provided END denotes the position at the | |
4123 | end of the buffer. */) | |
7ee72033 | 4124 | (beg, end) |
74514898 RS |
4125 | Lisp_Object beg, end; |
4126 | { | |
4127 | int noverlays; | |
4128 | Lisp_Object *overlay_vec; | |
4129 | int len; | |
4130 | Lisp_Object result; | |
4131 | ||
b7826503 PJ |
4132 | CHECK_NUMBER_COERCE_MARKER (beg); |
4133 | CHECK_NUMBER_COERCE_MARKER (end); | |
74514898 RS |
4134 | |
4135 | len = 10; | |
4136 | overlay_vec = (Lisp_Object *) xmalloc (len * sizeof (Lisp_Object)); | |
4137 | ||
4138 | /* Put all the overlays we want in a vector in overlay_vec. | |
4139 | Store the length in len. */ | |
4140 | noverlays = overlays_in (XINT (beg), XINT (end), 1, &overlay_vec, &len, | |
4141 | (int *) 0, (int *) 0); | |
4142 | ||
4143 | /* Make a list of them all. */ | |
4144 | result = Flist (noverlays, overlay_vec); | |
4145 | ||
4146 | xfree (overlay_vec); | |
4147 | return result; | |
4148 | } | |
4149 | ||
2eec3b4e | 4150 | DEFUN ("next-overlay-change", Fnext_overlay_change, Snext_overlay_change, |
efc7e75f | 4151 | 1, 1, 0, |
7ee72033 | 4152 | doc: /* Return the next position after POS where an overlay starts or ends. |
624d2678 RS |
4153 | If there are no overlay boundaries from POS to (point-max), |
4154 | the value is (point-max). */) | |
7ee72033 | 4155 | (pos) |
2eec3b4e RS |
4156 | Lisp_Object pos; |
4157 | { | |
4158 | int noverlays; | |
0f8b27ea | 4159 | EMACS_INT endpos; |
2eec3b4e RS |
4160 | Lisp_Object *overlay_vec; |
4161 | int len; | |
2eec3b4e RS |
4162 | int i; |
4163 | ||
b7826503 | 4164 | CHECK_NUMBER_COERCE_MARKER (pos); |
2eec3b4e RS |
4165 | |
4166 | len = 10; | |
4167 | overlay_vec = (Lisp_Object *) xmalloc (len * sizeof (Lisp_Object)); | |
4168 | ||
4169 | /* Put all the overlays we want in a vector in overlay_vec. | |
4170 | Store the length in len. | |
4171 | endpos gets the position where the next overlay starts. */ | |
2a77a7d7 | 4172 | noverlays = overlays_at (XINT (pos), 1, &overlay_vec, &len, |
0f8b27ea | 4173 | &endpos, (EMACS_INT *) 0, 1); |
2eec3b4e RS |
4174 | |
4175 | /* If any of these overlays ends before endpos, | |
4176 | use its ending point instead. */ | |
4177 | for (i = 0; i < noverlays; i++) | |
4178 | { | |
4179 | Lisp_Object oend; | |
0f8b27ea | 4180 | EMACS_INT oendpos; |
2eec3b4e RS |
4181 | |
4182 | oend = OVERLAY_END (overlay_vec[i]); | |
4183 | oendpos = OVERLAY_POSITION (oend); | |
4184 | if (oendpos < endpos) | |
4185 | endpos = oendpos; | |
1ab256cb RM |
4186 | } |
4187 | ||
9ac0d9e0 | 4188 | xfree (overlay_vec); |
2eec3b4e RS |
4189 | return make_number (endpos); |
4190 | } | |
239c932b RS |
4191 | |
4192 | DEFUN ("previous-overlay-change", Fprevious_overlay_change, | |
4193 | Sprevious_overlay_change, 1, 1, 0, | |
7ee72033 | 4194 | doc: /* Return the previous position before POS where an overlay starts or ends. |
624d2678 RS |
4195 | If there are no overlay boundaries from (point-min) to POS, |
4196 | the value is (point-min). */) | |
7ee72033 | 4197 | (pos) |
239c932b RS |
4198 | Lisp_Object pos; |
4199 | { | |
4200 | int noverlays; | |
0f8b27ea | 4201 | EMACS_INT prevpos; |
239c932b RS |
4202 | Lisp_Object *overlay_vec; |
4203 | int len; | |
239c932b | 4204 | |
b7826503 | 4205 | CHECK_NUMBER_COERCE_MARKER (pos); |
239c932b | 4206 | |
624bbdc4 RS |
4207 | /* At beginning of buffer, we know the answer; |
4208 | avoid bug subtracting 1 below. */ | |
4209 | if (XINT (pos) == BEGV) | |
4210 | return pos; | |
4211 | ||
017f0539 GM |
4212 | len = 10; |
4213 | overlay_vec = (Lisp_Object *) xmalloc (len * sizeof (Lisp_Object)); | |
4214 | ||
239c932b RS |
4215 | /* Put all the overlays we want in a vector in overlay_vec. |
4216 | Store the length in len. | |
daa1c109 | 4217 | prevpos gets the position of the previous change. */ |
2a77a7d7 | 4218 | noverlays = overlays_at (XINT (pos), 1, &overlay_vec, &len, |
0f8b27ea | 4219 | (EMACS_INT *) 0, &prevpos, 1); |
239c932b | 4220 | |
239c932b RS |
4221 | xfree (overlay_vec); |
4222 | return make_number (prevpos); | |
4223 | } | |
2eec3b4e RS |
4224 | \f |
4225 | /* These functions are for debugging overlays. */ | |
4226 | ||
4227 | DEFUN ("overlay-lists", Foverlay_lists, Soverlay_lists, 0, 0, 0, | |
7ee72033 | 4228 | doc: /* Return a pair of lists giving all the overlays of the current buffer. |
018ba359 PJ |
4229 | The car has all the overlays before the overlay center; |
4230 | the cdr has all the overlays after the overlay center. | |
4231 | Recentering overlays moves overlays between these lists. | |
4232 | The lists you get are copies, so that changing them has no effect. | |
7ee72033 MB |
4233 | However, the overlays you get are the real objects that the buffer uses. */) |
4234 | () | |
2eec3b4e | 4235 | { |
2410d73a SM |
4236 | struct Lisp_Overlay *ol; |
4237 | Lisp_Object before = Qnil, after = Qnil, tmp; | |
4238 | for (ol = current_buffer->overlays_before; ol; ol = ol->next) | |
4239 | { | |
4240 | XSETMISC (tmp, ol); | |
4241 | before = Fcons (tmp, before); | |
4242 | } | |
4243 | for (ol = current_buffer->overlays_after; ol; ol = ol->next) | |
4244 | { | |
4245 | XSETMISC (tmp, ol); | |
4246 | after = Fcons (tmp, after); | |
4247 | } | |
4248 | return Fcons (Fnreverse (before), Fnreverse (after)); | |
2eec3b4e RS |
4249 | } |
4250 | ||
4251 | DEFUN ("overlay-recenter", Foverlay_recenter, Soverlay_recenter, 1, 1, 0, | |
c87426c5 RS |
4252 | doc: /* Recenter the overlays of the current buffer around position POS. |
4253 | That makes overlay lookup faster for positions near POS (but perhaps slower | |
4254 | for positions far away from POS). */) | |
7ee72033 | 4255 | (pos) |
2eec3b4e RS |
4256 | Lisp_Object pos; |
4257 | { | |
b7826503 | 4258 | CHECK_NUMBER_COERCE_MARKER (pos); |
2eec3b4e | 4259 | |
5c4f68f1 | 4260 | recenter_overlay_lists (current_buffer, XINT (pos)); |
2eec3b4e RS |
4261 | return Qnil; |
4262 | } | |
4263 | \f | |
4264 | DEFUN ("overlay-get", Foverlay_get, Soverlay_get, 2, 2, 0, | |
7ee72033 MB |
4265 | doc: /* Get the property of overlay OVERLAY with property name PROP. */) |
4266 | (overlay, prop) | |
2eec3b4e RS |
4267 | Lisp_Object overlay, prop; |
4268 | { | |
b7826503 | 4269 | CHECK_OVERLAY (overlay); |
9a593927 | 4270 | return lookup_char_property (XOVERLAY (overlay)->plist, prop, 0); |
2eec3b4e RS |
4271 | } |
4272 | ||
4273 | DEFUN ("overlay-put", Foverlay_put, Soverlay_put, 3, 3, 0, | |
7ee72033 MB |
4274 | doc: /* Set one property of overlay OVERLAY: give property PROP value VALUE. */) |
4275 | (overlay, prop, value) | |
2eec3b4e RS |
4276 | Lisp_Object overlay, prop, value; |
4277 | { | |
48e2e3ba | 4278 | Lisp_Object tail, buffer; |
9d7608b7 | 4279 | int changed; |
2eec3b4e | 4280 | |
b7826503 | 4281 | CHECK_OVERLAY (overlay); |
b61982dd | 4282 | |
274a9425 RS |
4283 | buffer = Fmarker_buffer (OVERLAY_START (overlay)); |
4284 | ||
48e2e3ba | 4285 | for (tail = XOVERLAY (overlay)->plist; |
7539e11f KR |
4286 | CONSP (tail) && CONSP (XCDR (tail)); |
4287 | tail = XCDR (XCDR (tail))) | |
4288 | if (EQ (XCAR (tail), prop)) | |
274a9425 | 4289 | { |
7539e11f | 4290 | changed = !EQ (XCAR (XCDR (tail)), value); |
f3fbd155 | 4291 | XSETCAR (XCDR (tail), value); |
9d7608b7 | 4292 | goto found; |
274a9425 | 4293 | } |
9d7608b7 KH |
4294 | /* It wasn't in the list, so add it to the front. */ |
4295 | changed = !NILP (value); | |
48e2e3ba KH |
4296 | XOVERLAY (overlay)->plist |
4297 | = Fcons (prop, Fcons (value, XOVERLAY (overlay)->plist)); | |
9d7608b7 KH |
4298 | found: |
4299 | if (! NILP (buffer)) | |
4300 | { | |
4301 | if (changed) | |
876aa27c | 4302 | modify_overlay (XBUFFER (buffer), |
26f545d7 GM |
4303 | marker_position (OVERLAY_START (overlay)), |
4304 | marker_position (OVERLAY_END (overlay))); | |
9d7608b7 KH |
4305 | if (EQ (prop, Qevaporate) && ! NILP (value) |
4306 | && (OVERLAY_POSITION (OVERLAY_START (overlay)) | |
4307 | == OVERLAY_POSITION (OVERLAY_END (overlay)))) | |
4308 | Fdelete_overlay (overlay); | |
4309 | } | |
7d63db98 | 4310 | |
2eec3b4e | 4311 | return value; |
1ab256cb RM |
4312 | } |
4313 | \f | |
9115729e KH |
4314 | /* Subroutine of report_overlay_modification. */ |
4315 | ||
4316 | /* Lisp vector holding overlay hook functions to call. | |
4317 | Vector elements come in pairs. | |
4318 | Each even-index element is a list of hook functions. | |
4319 | The following odd-index element is the overlay they came from. | |
4320 | ||
4321 | Before the buffer change, we fill in this vector | |
4322 | as we call overlay hook functions. | |
4323 | After the buffer change, we get the functions to call from this vector. | |
4324 | This way we always call the same functions before and after the change. */ | |
4325 | static Lisp_Object last_overlay_modification_hooks; | |
4326 | ||
4327 | /* Number of elements actually used in last_overlay_modification_hooks. */ | |
4328 | static int last_overlay_modification_hooks_used; | |
4329 | ||
4330 | /* Add one functionlist/overlay pair | |
4331 | to the end of last_overlay_modification_hooks. */ | |
4332 | ||
4333 | static void | |
4334 | add_overlay_mod_hooklist (functionlist, overlay) | |
4335 | Lisp_Object functionlist, overlay; | |
4336 | { | |
4337 | int oldsize = XVECTOR (last_overlay_modification_hooks)->size; | |
4338 | ||
4339 | if (last_overlay_modification_hooks_used == oldsize) | |
de0280a2 EZ |
4340 | last_overlay_modification_hooks = larger_vector |
4341 | (last_overlay_modification_hooks, oldsize * 2, Qnil); | |
3ae565b3 SM |
4342 | ASET (last_overlay_modification_hooks, last_overlay_modification_hooks_used, |
4343 | functionlist); last_overlay_modification_hooks_used++; | |
4344 | ASET (last_overlay_modification_hooks, last_overlay_modification_hooks_used, | |
4345 | overlay); last_overlay_modification_hooks_used++; | |
9115729e KH |
4346 | } |
4347 | \f | |
173f2a64 RS |
4348 | /* Run the modification-hooks of overlays that include |
4349 | any part of the text in START to END. | |
9115729e KH |
4350 | If this change is an insertion, also |
4351 | run the insert-before-hooks of overlay starting at END, | |
930a9140 RS |
4352 | and the insert-after-hooks of overlay ending at START. |
4353 | ||
4354 | This is called both before and after the modification. | |
4355 | AFTER is nonzero when we call after the modification. | |
4356 | ||
9115729e KH |
4357 | ARG1, ARG2, ARG3 are arguments to pass to the hook functions. |
4358 | When AFTER is nonzero, they are the start position, | |
4359 | the position after the inserted new text, | |
4360 | and the length of deleted or replaced old text. */ | |
173f2a64 RS |
4361 | |
4362 | void | |
930a9140 | 4363 | report_overlay_modification (start, end, after, arg1, arg2, arg3) |
173f2a64 | 4364 | Lisp_Object start, end; |
930a9140 RS |
4365 | int after; |
4366 | Lisp_Object arg1, arg2, arg3; | |
173f2a64 | 4367 | { |
2410d73a SM |
4368 | Lisp_Object prop, overlay; |
4369 | struct Lisp_Overlay *tail; | |
9115729e KH |
4370 | /* 1 if this change is an insertion. */ |
4371 | int insertion = (after ? XFASTINT (arg3) == 0 : EQ (start, end)); | |
a615c6dc | 4372 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
55b48893 RS |
4373 | |
4374 | overlay = Qnil; | |
2410d73a | 4375 | tail = NULL; |
9115729e | 4376 | |
27c6b98e SM |
4377 | /* We used to run the functions as soon as we found them and only register |
4378 | them in last_overlay_modification_hooks for the purpose of the `after' | |
4379 | case. But running elisp code as we traverse the list of overlays is | |
4380 | painful because the list can be modified by the elisp code so we had to | |
4381 | copy at several places. We now simply do a read-only traversal that | |
4382 | only collects the functions to run and we run them afterwards. It's | |
4383 | simpler, especially since all the code was already there. -stef */ | |
4384 | ||
a615c6dc | 4385 | if (!after) |
173f2a64 | 4386 | { |
a615c6dc SM |
4387 | /* We are being called before a change. |
4388 | Scan the overlays to find the functions to call. */ | |
4389 | last_overlay_modification_hooks_used = 0; | |
2410d73a | 4390 | for (tail = current_buffer->overlays_before; tail; tail = tail->next) |
173f2a64 | 4391 | { |
a615c6dc SM |
4392 | int startpos, endpos; |
4393 | Lisp_Object ostart, oend; | |
4394 | ||
2410d73a | 4395 | XSETMISC (overlay, tail); |
a615c6dc SM |
4396 | |
4397 | ostart = OVERLAY_START (overlay); | |
4398 | oend = OVERLAY_END (overlay); | |
4399 | endpos = OVERLAY_POSITION (oend); | |
4400 | if (XFASTINT (start) > endpos) | |
4401 | break; | |
4402 | startpos = OVERLAY_POSITION (ostart); | |
4403 | if (insertion && (XFASTINT (start) == startpos | |
4404 | || XFASTINT (end) == startpos)) | |
5fb5aa33 | 4405 | { |
a615c6dc SM |
4406 | prop = Foverlay_get (overlay, Qinsert_in_front_hooks); |
4407 | if (!NILP (prop)) | |
4408 | add_overlay_mod_hooklist (prop, overlay); | |
5fb5aa33 | 4409 | } |
a615c6dc SM |
4410 | if (insertion && (XFASTINT (start) == endpos |
4411 | || XFASTINT (end) == endpos)) | |
5fb5aa33 | 4412 | { |
a615c6dc SM |
4413 | prop = Foverlay_get (overlay, Qinsert_behind_hooks); |
4414 | if (!NILP (prop)) | |
4415 | add_overlay_mod_hooklist (prop, overlay); | |
5fb5aa33 | 4416 | } |
a615c6dc SM |
4417 | /* Test for intersecting intervals. This does the right thing |
4418 | for both insertion and deletion. */ | |
4419 | if (XFASTINT (end) > startpos && XFASTINT (start) < endpos) | |
5fb5aa33 | 4420 | { |
a615c6dc SM |
4421 | prop = Foverlay_get (overlay, Qmodification_hooks); |
4422 | if (!NILP (prop)) | |
4423 | add_overlay_mod_hooklist (prop, overlay); | |
5fb5aa33 | 4424 | } |
173f2a64 | 4425 | } |
60ebfdf3 | 4426 | |
2410d73a | 4427 | for (tail = current_buffer->overlays_after; tail; tail = tail->next) |
173f2a64 | 4428 | { |
a615c6dc SM |
4429 | int startpos, endpos; |
4430 | Lisp_Object ostart, oend; | |
4431 | ||
2410d73a | 4432 | XSETMISC (overlay, tail); |
a615c6dc SM |
4433 | |
4434 | ostart = OVERLAY_START (overlay); | |
4435 | oend = OVERLAY_END (overlay); | |
4436 | startpos = OVERLAY_POSITION (ostart); | |
4437 | endpos = OVERLAY_POSITION (oend); | |
4438 | if (XFASTINT (end) < startpos) | |
4439 | break; | |
4440 | if (insertion && (XFASTINT (start) == startpos | |
4441 | || XFASTINT (end) == startpos)) | |
5fb5aa33 | 4442 | { |
a615c6dc SM |
4443 | prop = Foverlay_get (overlay, Qinsert_in_front_hooks); |
4444 | if (!NILP (prop)) | |
4445 | add_overlay_mod_hooklist (prop, overlay); | |
5fb5aa33 | 4446 | } |
a615c6dc SM |
4447 | if (insertion && (XFASTINT (start) == endpos |
4448 | || XFASTINT (end) == endpos)) | |
5fb5aa33 | 4449 | { |
a615c6dc SM |
4450 | prop = Foverlay_get (overlay, Qinsert_behind_hooks); |
4451 | if (!NILP (prop)) | |
4452 | add_overlay_mod_hooklist (prop, overlay); | |
5fb5aa33 | 4453 | } |
a615c6dc SM |
4454 | /* Test for intersecting intervals. This does the right thing |
4455 | for both insertion and deletion. */ | |
4456 | if (XFASTINT (end) > startpos && XFASTINT (start) < endpos) | |
5fb5aa33 | 4457 | { |
a615c6dc SM |
4458 | prop = Foverlay_get (overlay, Qmodification_hooks); |
4459 | if (!NILP (prop)) | |
4460 | add_overlay_mod_hooklist (prop, overlay); | |
5fb5aa33 | 4461 | } |
173f2a64 RS |
4462 | } |
4463 | } | |
55b48893 | 4464 | |
a615c6dc SM |
4465 | GCPRO4 (overlay, arg1, arg2, arg3); |
4466 | { | |
4467 | /* Call the functions recorded in last_overlay_modification_hooks. | |
4468 | First copy the vector contents, in case some of these hooks | |
4469 | do subsequent modification of the buffer. */ | |
4470 | int size = last_overlay_modification_hooks_used; | |
4471 | Lisp_Object *copy = (Lisp_Object *) alloca (size * sizeof (Lisp_Object)); | |
4472 | int i; | |
4473 | ||
4474 | bcopy (XVECTOR (last_overlay_modification_hooks)->contents, | |
4475 | copy, size * sizeof (Lisp_Object)); | |
4476 | gcpro1.var = copy; | |
4477 | gcpro1.nvars = size; | |
4478 | ||
4479 | for (i = 0; i < size;) | |
4480 | { | |
4481 | Lisp_Object prop, overlay; | |
4482 | prop = copy[i++]; | |
4483 | overlay = copy[i++]; | |
4484 | call_overlay_mod_hooks (prop, overlay, after, arg1, arg2, arg3); | |
4485 | } | |
4486 | } | |
55b48893 | 4487 | UNGCPRO; |
173f2a64 RS |
4488 | } |
4489 | ||
4490 | static void | |
930a9140 RS |
4491 | call_overlay_mod_hooks (list, overlay, after, arg1, arg2, arg3) |
4492 | Lisp_Object list, overlay; | |
4493 | int after; | |
4494 | Lisp_Object arg1, arg2, arg3; | |
173f2a64 | 4495 | { |
930a9140 | 4496 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
9115729e | 4497 | |
930a9140 | 4498 | GCPRO4 (list, arg1, arg2, arg3); |
9115729e | 4499 | |
6d70a280 | 4500 | while (CONSP (list)) |
173f2a64 | 4501 | { |
930a9140 | 4502 | if (NILP (arg3)) |
6d70a280 | 4503 | call4 (XCAR (list), overlay, after ? Qt : Qnil, arg1, arg2); |
930a9140 | 4504 | else |
6d70a280 SM |
4505 | call5 (XCAR (list), overlay, after ? Qt : Qnil, arg1, arg2, arg3); |
4506 | list = XCDR (list); | |
173f2a64 RS |
4507 | } |
4508 | UNGCPRO; | |
4509 | } | |
9d7608b7 KH |
4510 | |
4511 | /* Delete any zero-sized overlays at position POS, if the `evaporate' | |
4512 | property is set. */ | |
4513 | void | |
4514 | evaporate_overlays (pos) | |
c2d5b10f | 4515 | EMACS_INT pos; |
9d7608b7 | 4516 | { |
2410d73a SM |
4517 | Lisp_Object overlay, hit_list; |
4518 | struct Lisp_Overlay *tail; | |
9d7608b7 KH |
4519 | |
4520 | hit_list = Qnil; | |
c2d5b10f | 4521 | if (pos <= current_buffer->overlay_center) |
2410d73a | 4522 | for (tail = current_buffer->overlays_before; tail; tail = tail->next) |
9d7608b7 KH |
4523 | { |
4524 | int endpos; | |
2410d73a | 4525 | XSETMISC (overlay, tail); |
9d7608b7 KH |
4526 | endpos = OVERLAY_POSITION (OVERLAY_END (overlay)); |
4527 | if (endpos < pos) | |
4528 | break; | |
4529 | if (endpos == pos && OVERLAY_POSITION (OVERLAY_START (overlay)) == pos | |
c3935f9d | 4530 | && ! NILP (Foverlay_get (overlay, Qevaporate))) |
9d7608b7 KH |
4531 | hit_list = Fcons (overlay, hit_list); |
4532 | } | |
4533 | else | |
2410d73a | 4534 | for (tail = current_buffer->overlays_after; tail; tail = tail->next) |
9d7608b7 KH |
4535 | { |
4536 | int startpos; | |
2410d73a | 4537 | XSETMISC (overlay, tail); |
9d7608b7 KH |
4538 | startpos = OVERLAY_POSITION (OVERLAY_START (overlay)); |
4539 | if (startpos > pos) | |
4540 | break; | |
4541 | if (startpos == pos && OVERLAY_POSITION (OVERLAY_END (overlay)) == pos | |
c3935f9d | 4542 | && ! NILP (Foverlay_get (overlay, Qevaporate))) |
9d7608b7 KH |
4543 | hit_list = Fcons (overlay, hit_list); |
4544 | } | |
7539e11f KR |
4545 | for (; CONSP (hit_list); hit_list = XCDR (hit_list)) |
4546 | Fdelete_overlay (XCAR (hit_list)); | |
9d7608b7 | 4547 | } |
173f2a64 | 4548 | \f |
54dfdeb0 | 4549 | /* Somebody has tried to store a value with an unacceptable type |
1bf08baf KH |
4550 | in the slot with offset OFFSET. */ |
4551 | ||
0fa3ba92 | 4552 | void |
64e16c3c SM |
4553 | buffer_slot_type_mismatch (sym, type) |
4554 | Lisp_Object sym; | |
4555 | int type; | |
0fa3ba92 | 4556 | { |
0fa3ba92 | 4557 | char *type_name; |
177c0ea7 | 4558 | |
64e16c3c | 4559 | switch (type) |
0fa3ba92 | 4560 | { |
7c02e886 GM |
4561 | case Lisp_Int: |
4562 | type_name = "integers"; | |
4563 | break; | |
177c0ea7 | 4564 | |
7c02e886 GM |
4565 | case Lisp_String: |
4566 | type_name = "strings"; | |
4567 | break; | |
177c0ea7 | 4568 | |
7c02e886 GM |
4569 | case Lisp_Symbol: |
4570 | type_name = "symbols"; | |
4571 | break; | |
177c0ea7 | 4572 | |
0fa3ba92 JB |
4573 | default: |
4574 | abort (); | |
4575 | } | |
4576 | ||
1bf08baf | 4577 | error ("Only %s should be stored in the buffer-local variable %s", |
d5db4077 | 4578 | type_name, SDATA (SYMBOL_NAME (sym))); |
0fa3ba92 | 4579 | } |
7c02e886 | 4580 | |
0fa3ba92 | 4581 | \f |
b86af064 GM |
4582 | /*********************************************************************** |
4583 | Allocation with mmap | |
4584 | ***********************************************************************/ | |
4585 | ||
4586 | #ifdef USE_MMAP_FOR_BUFFERS | |
4587 | ||
4588 | #include <sys/types.h> | |
4589 | #include <sys/mman.h> | |
4590 | ||
4591 | #ifndef MAP_ANON | |
4592 | #ifdef MAP_ANONYMOUS | |
4593 | #define MAP_ANON MAP_ANONYMOUS | |
4594 | #else | |
4595 | #define MAP_ANON 0 | |
4596 | #endif | |
4597 | #endif | |
4598 | ||
09dfdf85 GM |
4599 | #ifndef MAP_FAILED |
4600 | #define MAP_FAILED ((void *) -1) | |
4601 | #endif | |
4602 | ||
b86af064 GM |
4603 | #include <stdio.h> |
4604 | #include <errno.h> | |
4605 | ||
4606 | #if MAP_ANON == 0 | |
4607 | #include <fcntl.h> | |
4608 | #endif | |
4609 | ||
4610 | #include "coding.h" | |
4611 | ||
4612 | ||
4613 | /* Memory is allocated in regions which are mapped using mmap(2). | |
4614 | The current implementation lets the system select mapped | |
4615 | addresses; we're not using MAP_FIXED in general, except when | |
4616 | trying to enlarge regions. | |
4617 | ||
4618 | Each mapped region starts with a mmap_region structure, the user | |
4619 | area starts after that structure, aligned to MEM_ALIGN. | |
4620 | ||
4621 | +-----------------------+ | |
4622 | | struct mmap_info + | | |
4623 | | padding | | |
4624 | +-----------------------+ | |
4625 | | user data | | |
4626 | | | | |
4627 | | | | |
4628 | +-----------------------+ */ | |
4629 | ||
4630 | struct mmap_region | |
4631 | { | |
4632 | /* User-specified size. */ | |
4633 | size_t nbytes_specified; | |
177c0ea7 | 4634 | |
b86af064 GM |
4635 | /* Number of bytes mapped */ |
4636 | size_t nbytes_mapped; | |
4637 | ||
4638 | /* Pointer to the location holding the address of the memory | |
4639 | allocated with the mmap'd block. The variable actually points | |
4640 | after this structure. */ | |
4641 | POINTER_TYPE **var; | |
4642 | ||
4643 | /* Next and previous in list of all mmap'd regions. */ | |
4644 | struct mmap_region *next, *prev; | |
4645 | }; | |
4646 | ||
4647 | /* Doubly-linked list of mmap'd regions. */ | |
4648 | ||
4649 | static struct mmap_region *mmap_regions; | |
4650 | ||
4651 | /* File descriptor for mmap. If we don't have anonymous mapping, | |
4652 | /dev/zero will be opened on it. */ | |
4653 | ||
4654 | static int mmap_fd; | |
4655 | ||
4656 | /* Temporary storage for mmap_set_vars, see there. */ | |
4657 | ||
4658 | static struct mmap_region *mmap_regions_1; | |
4659 | static int mmap_fd_1; | |
4660 | ||
4661 | /* Page size on this system. */ | |
4662 | ||
4663 | static int mmap_page_size; | |
4664 | ||
4665 | /* 1 means mmap has been intialized. */ | |
4666 | ||
4667 | static int mmap_initialized_p; | |
4668 | ||
4669 | /* Value is X rounded up to the next multiple of N. */ | |
4670 | ||
4671 | #define ROUND(X, N) (((X) + (N) - 1) / (N) * (N)) | |
4672 | ||
4673 | /* Size of mmap_region structure plus padding. */ | |
4674 | ||
4675 | #define MMAP_REGION_STRUCT_SIZE \ | |
4676 | ROUND (sizeof (struct mmap_region), MEM_ALIGN) | |
4677 | ||
4678 | /* Given a pointer P to the start of the user-visible part of a mapped | |
4679 | region, return a pointer to the start of the region. */ | |
4680 | ||
4681 | #define MMAP_REGION(P) \ | |
4682 | ((struct mmap_region *) ((char *) (P) - MMAP_REGION_STRUCT_SIZE)) | |
4683 | ||
4684 | /* Given a pointer P to the start of a mapped region, return a pointer | |
4685 | to the start of the user-visible part of the region. */ | |
4686 | ||
4687 | #define MMAP_USER_AREA(P) \ | |
4688 | ((POINTER_TYPE *) ((char *) (P) + MMAP_REGION_STRUCT_SIZE)) | |
4689 | ||
4690 | #define MEM_ALIGN sizeof (double) | |
4691 | ||
7273faa1 DL |
4692 | /* Predicate returning true if part of the address range [START .. END] |
4693 | is currently mapped. Used to prevent overwriting an existing | |
08327b22 GM |
4694 | memory mapping. |
4695 | ||
4696 | Default is to conservativly assume the address range is occupied by | |
4697 | something else. This can be overridden by system configuration | |
4698 | files if system-specific means to determine this exists. */ | |
4699 | ||
4700 | #ifndef MMAP_ALLOCATED_P | |
4701 | #define MMAP_ALLOCATED_P(start, end) 1 | |
4702 | #endif | |
4703 | ||
b86af064 GM |
4704 | /* Function prototypes. */ |
4705 | ||
4706 | static int mmap_free_1 P_ ((struct mmap_region *)); | |
4707 | static int mmap_enlarge P_ ((struct mmap_region *, int)); | |
4708 | static struct mmap_region *mmap_find P_ ((POINTER_TYPE *, POINTER_TYPE *)); | |
4709 | static POINTER_TYPE *mmap_alloc P_ ((POINTER_TYPE **, size_t)); | |
4710 | static POINTER_TYPE *mmap_realloc P_ ((POINTER_TYPE **, size_t)); | |
4711 | static void mmap_free P_ ((POINTER_TYPE **ptr)); | |
4712 | static void mmap_init P_ ((void)); | |
4713 | ||
4714 | ||
4715 | /* Return a region overlapping address range START...END, or null if | |
4716 | none. END is not including, i.e. the last byte in the range | |
4717 | is at END - 1. */ | |
4718 | ||
4719 | static struct mmap_region * | |
4720 | mmap_find (start, end) | |
4721 | POINTER_TYPE *start, *end; | |
4722 | { | |
4723 | struct mmap_region *r; | |
4724 | char *s = (char *) start, *e = (char *) end; | |
177c0ea7 | 4725 | |
b86af064 GM |
4726 | for (r = mmap_regions; r; r = r->next) |
4727 | { | |
4728 | char *rstart = (char *) r; | |
4729 | char *rend = rstart + r->nbytes_mapped; | |
4730 | ||
4731 | if (/* First byte of range, i.e. START, in this region? */ | |
4732 | (s >= rstart && s < rend) | |
4733 | /* Last byte of range, i.e. END - 1, in this region? */ | |
4734 | || (e > rstart && e <= rend) | |
4735 | /* First byte of this region in the range? */ | |
4736 | || (rstart >= s && rstart < e) | |
4737 | /* Last byte of this region in the range? */ | |
4738 | || (rend > s && rend <= e)) | |
4739 | break; | |
4740 | } | |
4741 | ||
4742 | return r; | |
4743 | } | |
4744 | ||
4745 | ||
4746 | /* Unmap a region. P is a pointer to the start of the user-araa of | |
4747 | the region. Value is non-zero if successful. */ | |
4748 | ||
4749 | static int | |
4750 | mmap_free_1 (r) | |
4751 | struct mmap_region *r; | |
4752 | { | |
4753 | if (r->next) | |
4754 | r->next->prev = r->prev; | |
4755 | if (r->prev) | |
4756 | r->prev->next = r->next; | |
4757 | else | |
4758 | mmap_regions = r->next; | |
177c0ea7 | 4759 | |
1a15cca0 | 4760 | if (munmap ((POINTER_TYPE *) r, r->nbytes_mapped) == -1) |
b86af064 GM |
4761 | { |
4762 | fprintf (stderr, "munmap: %s\n", emacs_strerror (errno)); | |
4763 | return 0; | |
4764 | } | |
4765 | ||
4766 | return 1; | |
4767 | } | |
4768 | ||
4769 | ||
4770 | /* Enlarge region R by NPAGES pages. NPAGES < 0 means shrink R. | |
4771 | Value is non-zero if successful. */ | |
4772 | ||
4773 | static int | |
4774 | mmap_enlarge (r, npages) | |
4775 | struct mmap_region *r; | |
4776 | int npages; | |
4777 | { | |
4778 | char *region_end = (char *) r + r->nbytes_mapped; | |
4779 | size_t nbytes; | |
4780 | int success = 0; | |
4781 | ||
4782 | if (npages < 0) | |
4783 | { | |
4784 | /* Unmap pages at the end of the region. */ | |
4785 | nbytes = - npages * mmap_page_size; | |
4786 | if (munmap (region_end - nbytes, nbytes) == -1) | |
4787 | fprintf (stderr, "munmap: %s\n", emacs_strerror (errno)); | |
4788 | else | |
4789 | { | |
4790 | r->nbytes_mapped -= nbytes; | |
4791 | success = 1; | |
4792 | } | |
4793 | } | |
4794 | else if (npages > 0) | |
4795 | { | |
b86af064 | 4796 | nbytes = npages * mmap_page_size; |
177c0ea7 | 4797 | |
b86af064 GM |
4798 | /* Try to map additional pages at the end of the region. We |
4799 | cannot do this if the address range is already occupied by | |
4800 | something else because mmap deletes any previous mapping. | |
4801 | I'm not sure this is worth doing, let's see. */ | |
08327b22 | 4802 | if (!MMAP_ALLOCATED_P (region_end, region_end + nbytes)) |
b86af064 GM |
4803 | { |
4804 | POINTER_TYPE *p; | |
177c0ea7 | 4805 | |
b86af064 GM |
4806 | p = mmap (region_end, nbytes, PROT_READ | PROT_WRITE, |
4807 | MAP_ANON | MAP_PRIVATE | MAP_FIXED, mmap_fd, 0); | |
4808 | if (p == MAP_FAILED) | |
edaa9aed | 4809 | ; /* fprintf (stderr, "mmap: %s\n", emacs_strerror (errno)); */ |
b86af064 GM |
4810 | else if (p != (POINTER_TYPE *) region_end) |
4811 | { | |
4812 | /* Kernels are free to choose a different address. In | |
4813 | that case, unmap what we've mapped above; we have | |
4814 | no use for it. */ | |
4815 | if (munmap (p, nbytes) == -1) | |
4816 | fprintf (stderr, "munmap: %s\n", emacs_strerror (errno)); | |
4817 | } | |
4818 | else | |
4819 | { | |
4820 | r->nbytes_mapped += nbytes; | |
4821 | success = 1; | |
4822 | } | |
4823 | } | |
4824 | } | |
4825 | ||
4826 | return success; | |
4827 | } | |
4828 | ||
4829 | ||
4830 | /* Set or reset variables holding references to mapped regions. If | |
4831 | RESTORE_P is zero, set all variables to null. If RESTORE_P is | |
4832 | non-zero, set all variables to the start of the user-areas | |
4833 | of mapped regions. | |
4834 | ||
4835 | This function is called from Fdump_emacs to ensure that the dumped | |
4836 | Emacs doesn't contain references to memory that won't be mapped | |
4837 | when Emacs starts. */ | |
4838 | ||
4839 | void | |
4840 | mmap_set_vars (restore_p) | |
4841 | int restore_p; | |
4842 | { | |
4843 | struct mmap_region *r; | |
4844 | ||
4845 | if (restore_p) | |
4846 | { | |
4847 | mmap_regions = mmap_regions_1; | |
4848 | mmap_fd = mmap_fd_1; | |
4849 | for (r = mmap_regions; r; r = r->next) | |
4850 | *r->var = MMAP_USER_AREA (r); | |
4851 | } | |
4852 | else | |
4853 | { | |
4854 | for (r = mmap_regions; r; r = r->next) | |
4855 | *r->var = NULL; | |
4856 | mmap_regions_1 = mmap_regions; | |
4857 | mmap_regions = NULL; | |
4858 | mmap_fd_1 = mmap_fd; | |
4859 | mmap_fd = -1; | |
4860 | } | |
4861 | } | |
4862 | ||
4863 | ||
4864 | /* Allocate a block of storage large enough to hold NBYTES bytes of | |
4865 | data. A pointer to the data is returned in *VAR. VAR is thus the | |
4866 | address of some variable which will use the data area. | |
4867 | ||
4868 | The allocation of 0 bytes is valid. | |
4869 | ||
4870 | If we can't allocate the necessary memory, set *VAR to null, and | |
4871 | return null. */ | |
4872 | ||
4873 | static POINTER_TYPE * | |
4874 | mmap_alloc (var, nbytes) | |
4875 | POINTER_TYPE **var; | |
4876 | size_t nbytes; | |
4877 | { | |
4878 | void *p; | |
4879 | size_t map; | |
4880 | ||
4881 | mmap_init (); | |
4882 | ||
4883 | map = ROUND (nbytes + MMAP_REGION_STRUCT_SIZE, mmap_page_size); | |
4884 | p = mmap (NULL, map, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, | |
4885 | mmap_fd, 0); | |
177c0ea7 | 4886 | |
b86af064 GM |
4887 | if (p == MAP_FAILED) |
4888 | { | |
4889 | if (errno != ENOMEM) | |
4890 | fprintf (stderr, "mmap: %s\n", emacs_strerror (errno)); | |
4891 | p = NULL; | |
4892 | } | |
4893 | else | |
4894 | { | |
4895 | struct mmap_region *r = (struct mmap_region *) p; | |
177c0ea7 | 4896 | |
b86af064 GM |
4897 | r->nbytes_specified = nbytes; |
4898 | r->nbytes_mapped = map; | |
4899 | r->var = var; | |
4900 | r->prev = NULL; | |
4901 | r->next = mmap_regions; | |
4902 | if (r->next) | |
4903 | r->next->prev = r; | |
4904 | mmap_regions = r; | |
177c0ea7 | 4905 | |
b86af064 GM |
4906 | p = MMAP_USER_AREA (p); |
4907 | } | |
177c0ea7 | 4908 | |
b86af064 GM |
4909 | return *var = p; |
4910 | } | |
4911 | ||
4912 | ||
4913 | /* Given a pointer at address VAR to data allocated with mmap_alloc, | |
4914 | resize it to size NBYTES. Change *VAR to reflect the new block, | |
4915 | and return this value. If more memory cannot be allocated, then | |
4916 | leave *VAR unchanged, and return null. */ | |
4917 | ||
4918 | static POINTER_TYPE * | |
4919 | mmap_realloc (var, nbytes) | |
4920 | POINTER_TYPE **var; | |
4921 | size_t nbytes; | |
4922 | { | |
4923 | POINTER_TYPE *result; | |
177c0ea7 | 4924 | |
b86af064 GM |
4925 | mmap_init (); |
4926 | ||
4927 | if (*var == NULL) | |
4928 | result = mmap_alloc (var, nbytes); | |
177c0ea7 | 4929 | else if (nbytes == 0) |
b86af064 GM |
4930 | { |
4931 | mmap_free (var); | |
4932 | result = mmap_alloc (var, nbytes); | |
4933 | } | |
4934 | else | |
4935 | { | |
4936 | struct mmap_region *r = MMAP_REGION (*var); | |
4937 | size_t room = r->nbytes_mapped - MMAP_REGION_STRUCT_SIZE; | |
177c0ea7 | 4938 | |
b86af064 GM |
4939 | if (room < nbytes) |
4940 | { | |
4941 | /* Must enlarge. */ | |
4942 | POINTER_TYPE *old_ptr = *var; | |
4943 | ||
4944 | /* Try to map additional pages at the end of the region. | |
4945 | If that fails, allocate a new region, copy data | |
4946 | from the old region, then free it. */ | |
4947 | if (mmap_enlarge (r, (ROUND (nbytes - room, mmap_page_size) | |
4948 | / mmap_page_size))) | |
4949 | { | |
4950 | r->nbytes_specified = nbytes; | |
4951 | *var = result = old_ptr; | |
4952 | } | |
4953 | else if (mmap_alloc (var, nbytes)) | |
4954 | { | |
4955 | bcopy (old_ptr, *var, r->nbytes_specified); | |
4956 | mmap_free_1 (MMAP_REGION (old_ptr)); | |
4957 | result = *var; | |
4958 | r = MMAP_REGION (result); | |
4959 | r->nbytes_specified = nbytes; | |
4960 | } | |
4961 | else | |
4962 | { | |
4963 | *var = old_ptr; | |
4964 | result = NULL; | |
4965 | } | |
4966 | } | |
4967 | else if (room - nbytes >= mmap_page_size) | |
4968 | { | |
4969 | /* Shrinking by at least a page. Let's give some | |
6bcdeb8c KR |
4970 | memory back to the system. |
4971 | ||
4972 | The extra parens are to make the division happens first, | |
4973 | on positive values, so we know it will round towards | |
4974 | zero. */ | |
bb63c5c9 | 4975 | mmap_enlarge (r, - ((room - nbytes) / mmap_page_size)); |
b86af064 GM |
4976 | result = *var; |
4977 | r->nbytes_specified = nbytes; | |
4978 | } | |
4979 | else | |
4980 | { | |
4981 | /* Leave it alone. */ | |
4982 | result = *var; | |
4983 | r->nbytes_specified = nbytes; | |
4984 | } | |
4985 | } | |
4986 | ||
4987 | return result; | |
4988 | } | |
4989 | ||
4990 | ||
4991 | /* Free a block of relocatable storage whose data is pointed to by | |
4992 | PTR. Store 0 in *PTR to show there's no block allocated. */ | |
4993 | ||
4994 | static void | |
4995 | mmap_free (var) | |
4996 | POINTER_TYPE **var; | |
4997 | { | |
4998 | mmap_init (); | |
177c0ea7 | 4999 | |
b86af064 GM |
5000 | if (*var) |
5001 | { | |
5002 | mmap_free_1 (MMAP_REGION (*var)); | |
5003 | *var = NULL; | |
5004 | } | |
5005 | } | |
5006 | ||
5007 | ||
5008 | /* Perform necessary intializations for the use of mmap. */ | |
5009 | ||
5010 | static void | |
5011 | mmap_init () | |
5012 | { | |
5013 | #if MAP_ANON == 0 | |
5014 | /* The value of mmap_fd is initially 0 in temacs, and -1 | |
5015 | in a dumped Emacs. */ | |
5016 | if (mmap_fd <= 0) | |
5017 | { | |
5018 | /* No anonymous mmap -- we need the file descriptor. */ | |
5019 | mmap_fd = open ("/dev/zero", O_RDONLY); | |
5020 | if (mmap_fd == -1) | |
5021 | fatal ("Cannot open /dev/zero: %s", emacs_strerror (errno)); | |
5022 | } | |
5023 | #endif /* MAP_ANON == 0 */ | |
5024 | ||
5025 | if (mmap_initialized_p) | |
5026 | return; | |
5027 | mmap_initialized_p = 1; | |
177c0ea7 | 5028 | |
b86af064 GM |
5029 | #if MAP_ANON != 0 |
5030 | mmap_fd = -1; | |
5031 | #endif | |
177c0ea7 | 5032 | |
b86af064 GM |
5033 | mmap_page_size = getpagesize (); |
5034 | } | |
5035 | ||
5036 | #endif /* USE_MMAP_FOR_BUFFERS */ | |
5037 | ||
5038 | ||
5039 | \f | |
5040 | /*********************************************************************** | |
5041 | Buffer-text Allocation | |
5042 | ***********************************************************************/ | |
5043 | ||
5044 | #ifdef REL_ALLOC | |
5045 | extern POINTER_TYPE *r_alloc P_ ((POINTER_TYPE **, size_t)); | |
5046 | extern POINTER_TYPE *r_re_alloc P_ ((POINTER_TYPE **, size_t)); | |
5047 | extern void r_alloc_free P_ ((POINTER_TYPE **ptr)); | |
5048 | #endif /* REL_ALLOC */ | |
5049 | ||
5050 | ||
5051 | /* Allocate NBYTES bytes for buffer B's text buffer. */ | |
5052 | ||
5053 | static void | |
5054 | alloc_buffer_text (b, nbytes) | |
5055 | struct buffer *b; | |
5056 | size_t nbytes; | |
5057 | { | |
5058 | POINTER_TYPE *p; | |
177c0ea7 | 5059 | |
b86af064 GM |
5060 | BLOCK_INPUT; |
5061 | #if defined USE_MMAP_FOR_BUFFERS | |
5062 | p = mmap_alloc ((POINTER_TYPE **) &b->text->beg, nbytes); | |
5063 | #elif defined REL_ALLOC | |
5064 | p = r_alloc ((POINTER_TYPE **) &b->text->beg, nbytes); | |
5065 | #else | |
815add84 | 5066 | p = xmalloc (nbytes); |
b86af064 | 5067 | #endif |
177c0ea7 | 5068 | |
b86af064 GM |
5069 | if (p == NULL) |
5070 | { | |
5071 | UNBLOCK_INPUT; | |
5072 | memory_full (); | |
5073 | } | |
5074 | ||
5075 | b->text->beg = (unsigned char *) p; | |
5076 | UNBLOCK_INPUT; | |
5077 | } | |
5078 | ||
5079 | /* Enlarge buffer B's text buffer by DELTA bytes. DELTA < 0 means | |
5080 | shrink it. */ | |
5081 | ||
5082 | void | |
5371d722 | 5083 | enlarge_buffer_text (struct buffer *b, EMACS_INT delta) |
b86af064 GM |
5084 | { |
5085 | POINTER_TYPE *p; | |
5086 | size_t nbytes = (BUF_Z_BYTE (b) - BUF_BEG_BYTE (b) + BUF_GAP_SIZE (b) + 1 | |
5087 | + delta); | |
5088 | BLOCK_INPUT; | |
5089 | #if defined USE_MMAP_FOR_BUFFERS | |
5090 | p = mmap_realloc ((POINTER_TYPE **) &b->text->beg, nbytes); | |
5091 | #elif defined REL_ALLOC | |
5092 | p = r_re_alloc ((POINTER_TYPE **) &b->text->beg, nbytes); | |
5093 | #else | |
5094 | p = xrealloc (b->text->beg, nbytes); | |
5095 | #endif | |
177c0ea7 | 5096 | |
b86af064 GM |
5097 | if (p == NULL) |
5098 | { | |
5099 | UNBLOCK_INPUT; | |
5100 | memory_full (); | |
5101 | } | |
5102 | ||
5103 | BUF_BEG_ADDR (b) = (unsigned char *) p; | |
5104 | UNBLOCK_INPUT; | |
5105 | } | |
5106 | ||
5107 | ||
5108 | /* Free buffer B's text buffer. */ | |
5109 | ||
5110 | static void | |
5111 | free_buffer_text (b) | |
5112 | struct buffer *b; | |
5113 | { | |
5114 | BLOCK_INPUT; | |
5115 | ||
5116 | #if defined USE_MMAP_FOR_BUFFERS | |
5117 | mmap_free ((POINTER_TYPE **) &b->text->beg); | |
5118 | #elif defined REL_ALLOC | |
5119 | r_alloc_free ((POINTER_TYPE **) &b->text->beg); | |
5120 | #else | |
5121 | xfree (b->text->beg); | |
5122 | #endif | |
177c0ea7 | 5123 | |
b86af064 GM |
5124 | BUF_BEG_ADDR (b) = NULL; |
5125 | UNBLOCK_INPUT; | |
5126 | } | |
5127 | ||
5128 | ||
5129 | \f | |
5130 | /*********************************************************************** | |
5131 | Initialization | |
5132 | ***********************************************************************/ | |
5133 | ||
dfcf069d | 5134 | void |
1ab256cb RM |
5135 | init_buffer_once () |
5136 | { | |
7c02e886 GM |
5137 | int idx; |
5138 | ||
5139 | bzero (buffer_permanent_local_flags, sizeof buffer_permanent_local_flags); | |
13de9290 | 5140 | |
1ab256cb RM |
5141 | /* Make sure all markable slots in buffer_defaults |
5142 | are initialized reasonably, so mark_buffer won't choke. */ | |
5143 | reset_buffer (&buffer_defaults); | |
13de9290 | 5144 | reset_buffer_local_variables (&buffer_defaults, 1); |
1ab256cb | 5145 | reset_buffer (&buffer_local_symbols); |
13de9290 | 5146 | reset_buffer_local_variables (&buffer_local_symbols, 1); |
336cd056 RS |
5147 | /* Prevent GC from getting confused. */ |
5148 | buffer_defaults.text = &buffer_defaults.own_text; | |
5149 | buffer_local_symbols.text = &buffer_local_symbols.own_text; | |
336cd056 RS |
5150 | BUF_INTERVALS (&buffer_defaults) = 0; |
5151 | BUF_INTERVALS (&buffer_local_symbols) = 0; | |
cf00e751 | 5152 | XSETPVECTYPE (&buffer_defaults, PVEC_BUFFER); |
67180c6a | 5153 | XSETBUFFER (Vbuffer_defaults, &buffer_defaults); |
cf00e751 | 5154 | XSETPVECTYPE (&buffer_local_symbols, PVEC_BUFFER); |
67180c6a | 5155 | XSETBUFFER (Vbuffer_local_symbols, &buffer_local_symbols); |
1ab256cb RM |
5156 | |
5157 | /* Set up the default values of various buffer slots. */ | |
5158 | /* Must do these before making the first buffer! */ | |
5159 | ||
f532dca0 | 5160 | /* real setup is done in bindings.el */ |
1ab256cb | 5161 | buffer_defaults.mode_line_format = build_string ("%-"); |
045dee35 | 5162 | buffer_defaults.header_line_format = Qnil; |
1ab256cb RM |
5163 | buffer_defaults.abbrev_mode = Qnil; |
5164 | buffer_defaults.overwrite_mode = Qnil; | |
5165 | buffer_defaults.case_fold_search = Qt; | |
5166 | buffer_defaults.auto_fill_function = Qnil; | |
5167 | buffer_defaults.selective_display = Qnil; | |
5168 | #ifndef old | |
5169 | buffer_defaults.selective_display_ellipses = Qt; | |
5170 | #endif | |
5171 | buffer_defaults.abbrev_table = Qnil; | |
5172 | buffer_defaults.display_table = Qnil; | |
1ab256cb | 5173 | buffer_defaults.undo_list = Qnil; |
c48f61ef | 5174 | buffer_defaults.mark_active = Qnil; |
be9aafdd | 5175 | buffer_defaults.file_format = Qnil; |
71ed49fa | 5176 | buffer_defaults.auto_save_file_format = Qt; |
2410d73a SM |
5177 | buffer_defaults.overlays_before = NULL; |
5178 | buffer_defaults.overlays_after = NULL; | |
c2d5b10f | 5179 | buffer_defaults.overlay_center = BEG; |
1ab256cb | 5180 | |
8d7a4592 | 5181 | XSETFASTINT (buffer_defaults.tab_width, 8); |
1ab256cb RM |
5182 | buffer_defaults.truncate_lines = Qnil; |
5183 | buffer_defaults.ctl_arrow = Qt; | |
3b06f880 | 5184 | buffer_defaults.direction_reversed = Qnil; |
bb2ec976 | 5185 | buffer_defaults.cursor_type = Qt; |
a3bbced0 | 5186 | buffer_defaults.extra_line_spacing = Qnil; |
187ccf49 | 5187 | buffer_defaults.cursor_in_non_selected_windows = Qt; |
1ab256cb | 5188 | |
f7975d07 | 5189 | #ifdef DOS_NT |
0776cb1b | 5190 | buffer_defaults.buffer_file_type = Qnil; /* TEXT */ |
54ad07d3 | 5191 | #endif |
a1a17b61 | 5192 | buffer_defaults.enable_multibyte_characters = Qt; |
c71b5d9b | 5193 | buffer_defaults.buffer_file_coding_system = Qnil; |
8d7a4592 KH |
5194 | XSETFASTINT (buffer_defaults.fill_column, 70); |
5195 | XSETFASTINT (buffer_defaults.left_margin, 0); | |
28e969dd | 5196 | buffer_defaults.cache_long_line_scans = Qnil; |
f6ed2e84 | 5197 | buffer_defaults.file_truename = Qnil; |
7962a441 | 5198 | XSETFASTINT (buffer_defaults.display_count, 0); |
2ad8731a KS |
5199 | XSETFASTINT (buffer_defaults.left_margin_cols, 0); |
5200 | XSETFASTINT (buffer_defaults.right_margin_cols, 0); | |
5201 | buffer_defaults.left_fringe_width = Qnil; | |
5202 | buffer_defaults.right_fringe_width = Qnil; | |
5203 | buffer_defaults.fringes_outside_margins = Qnil; | |
5204 | buffer_defaults.scroll_bar_width = Qnil; | |
5205 | buffer_defaults.vertical_scroll_bar_type = Qt; | |
0552666b | 5206 | buffer_defaults.indicate_empty_lines = Qnil; |
6b61353c | 5207 | buffer_defaults.indicate_buffer_boundaries = Qnil; |
c6a46372 KS |
5208 | buffer_defaults.fringe_indicator_alist = Qnil; |
5209 | buffer_defaults.fringe_cursor_alist = Qnil; | |
0552666b GM |
5210 | buffer_defaults.scroll_up_aggressively = Qnil; |
5211 | buffer_defaults.scroll_down_aggressively = Qnil; | |
3fd364db | 5212 | buffer_defaults.display_time = Qnil; |
1ab256cb RM |
5213 | |
5214 | /* Assign the local-flags to the slots that have default values. | |
5215 | The local flag is a bit that is used in the buffer | |
5216 | to say that it has its own local value for the slot. | |
5217 | The local flag bits are in the local_var_flags slot of the buffer. */ | |
5218 | ||
5219 | /* Nothing can work if this isn't true */ | |
4d2f1389 | 5220 | if (sizeof (EMACS_INT) != sizeof (Lisp_Object)) abort (); |
1ab256cb RM |
5221 | |
5222 | /* 0 means not a lisp var, -1 means always local, else mask */ | |
5223 | bzero (&buffer_local_flags, sizeof buffer_local_flags); | |
aab80822 KH |
5224 | XSETINT (buffer_local_flags.filename, -1); |
5225 | XSETINT (buffer_local_flags.directory, -1); | |
5226 | XSETINT (buffer_local_flags.backed_up, -1); | |
5227 | XSETINT (buffer_local_flags.save_length, -1); | |
5228 | XSETINT (buffer_local_flags.auto_save_file_name, -1); | |
5229 | XSETINT (buffer_local_flags.read_only, -1); | |
5230 | XSETINT (buffer_local_flags.major_mode, -1); | |
5231 | XSETINT (buffer_local_flags.mode_name, -1); | |
5232 | XSETINT (buffer_local_flags.undo_list, -1); | |
5233 | XSETINT (buffer_local_flags.mark_active, -1); | |
943e065b | 5234 | XSETINT (buffer_local_flags.point_before_scroll, -1); |
f6ed2e84 | 5235 | XSETINT (buffer_local_flags.file_truename, -1); |
3cb719bd | 5236 | XSETINT (buffer_local_flags.invisibility_spec, -1); |
55ac8536 | 5237 | XSETINT (buffer_local_flags.file_format, -1); |
71ed49fa | 5238 | XSETINT (buffer_local_flags.auto_save_file_format, -1); |
7962a441 | 5239 | XSETINT (buffer_local_flags.display_count, -1); |
3fd364db | 5240 | XSETINT (buffer_local_flags.display_time, -1); |
1bf08baf | 5241 | XSETINT (buffer_local_flags.enable_multibyte_characters, -1); |
8d7a4592 | 5242 | |
7c02e886 GM |
5243 | idx = 1; |
5244 | XSETFASTINT (buffer_local_flags.mode_line_format, idx); ++idx; | |
5245 | XSETFASTINT (buffer_local_flags.abbrev_mode, idx); ++idx; | |
5246 | XSETFASTINT (buffer_local_flags.overwrite_mode, idx); ++idx; | |
5247 | XSETFASTINT (buffer_local_flags.case_fold_search, idx); ++idx; | |
5248 | XSETFASTINT (buffer_local_flags.auto_fill_function, idx); ++idx; | |
5249 | XSETFASTINT (buffer_local_flags.selective_display, idx); ++idx; | |
1ab256cb | 5250 | #ifndef old |
7c02e886 | 5251 | XSETFASTINT (buffer_local_flags.selective_display_ellipses, idx); ++idx; |
1ab256cb | 5252 | #endif |
7c02e886 GM |
5253 | XSETFASTINT (buffer_local_flags.tab_width, idx); ++idx; |
5254 | XSETFASTINT (buffer_local_flags.truncate_lines, idx); ++idx; | |
5255 | XSETFASTINT (buffer_local_flags.ctl_arrow, idx); ++idx; | |
5256 | XSETFASTINT (buffer_local_flags.fill_column, idx); ++idx; | |
5257 | XSETFASTINT (buffer_local_flags.left_margin, idx); ++idx; | |
5258 | XSETFASTINT (buffer_local_flags.abbrev_table, idx); ++idx; | |
5259 | XSETFASTINT (buffer_local_flags.display_table, idx); ++idx; | |
f7975d07 | 5260 | #ifdef DOS_NT |
7c02e886 | 5261 | XSETFASTINT (buffer_local_flags.buffer_file_type, idx); |
13de9290 | 5262 | /* Make this one a permanent local. */ |
7c02e886 | 5263 | buffer_permanent_local_flags[idx++] = 1; |
54ad07d3 | 5264 | #endif |
7c02e886 GM |
5265 | XSETFASTINT (buffer_local_flags.syntax_table, idx); ++idx; |
5266 | XSETFASTINT (buffer_local_flags.cache_long_line_scans, idx); ++idx; | |
5267 | XSETFASTINT (buffer_local_flags.category_table, idx); ++idx; | |
5268 | XSETFASTINT (buffer_local_flags.direction_reversed, idx); ++idx; | |
177c0ea7 | 5269 | XSETFASTINT (buffer_local_flags.buffer_file_coding_system, idx); |
a1a17b61 | 5270 | /* Make this one a permanent local. */ |
7c02e886 | 5271 | buffer_permanent_local_flags[idx++] = 1; |
2ad8731a KS |
5272 | XSETFASTINT (buffer_local_flags.left_margin_cols, idx); ++idx; |
5273 | XSETFASTINT (buffer_local_flags.right_margin_cols, idx); ++idx; | |
5274 | XSETFASTINT (buffer_local_flags.left_fringe_width, idx); ++idx; | |
5275 | XSETFASTINT (buffer_local_flags.right_fringe_width, idx); ++idx; | |
5276 | XSETFASTINT (buffer_local_flags.fringes_outside_margins, idx); ++idx; | |
5277 | XSETFASTINT (buffer_local_flags.scroll_bar_width, idx); ++idx; | |
5278 | XSETFASTINT (buffer_local_flags.vertical_scroll_bar_type, idx); ++idx; | |
7c02e886 | 5279 | XSETFASTINT (buffer_local_flags.indicate_empty_lines, idx); ++idx; |
6b61353c | 5280 | XSETFASTINT (buffer_local_flags.indicate_buffer_boundaries, idx); ++idx; |
c6a46372 KS |
5281 | XSETFASTINT (buffer_local_flags.fringe_indicator_alist, idx); ++idx; |
5282 | XSETFASTINT (buffer_local_flags.fringe_cursor_alist, idx); ++idx; | |
7c02e886 GM |
5283 | XSETFASTINT (buffer_local_flags.scroll_up_aggressively, idx); ++idx; |
5284 | XSETFASTINT (buffer_local_flags.scroll_down_aggressively, idx); ++idx; | |
5285 | XSETFASTINT (buffer_local_flags.header_line_format, idx); ++idx; | |
bd96bd79 | 5286 | XSETFASTINT (buffer_local_flags.cursor_type, idx); ++idx; |
a3bbced0 | 5287 | XSETFASTINT (buffer_local_flags.extra_line_spacing, idx); ++idx; |
0124c5bd | 5288 | XSETFASTINT (buffer_local_flags.cursor_in_non_selected_windows, idx); ++idx; |
7c02e886 GM |
5289 | |
5290 | /* Need more room? */ | |
7313acd0 | 5291 | if (idx >= MAX_PER_BUFFER_VARS) |
7c02e886 | 5292 | abort (); |
7313acd0 | 5293 | last_per_buffer_idx = idx; |
177c0ea7 | 5294 | |
1ab256cb RM |
5295 | Vbuffer_alist = Qnil; |
5296 | current_buffer = 0; | |
5297 | all_buffers = 0; | |
5298 | ||
5299 | QSFundamental = build_string ("Fundamental"); | |
5300 | ||
5301 | Qfundamental_mode = intern ("fundamental-mode"); | |
5302 | buffer_defaults.major_mode = Qfundamental_mode; | |
5303 | ||
5304 | Qmode_class = intern ("mode-class"); | |
5305 | ||
5306 | Qprotected_field = intern ("protected-field"); | |
5307 | ||
5308 | Qpermanent_local = intern ("permanent-local"); | |
5309 | ||
5310 | Qkill_buffer_hook = intern ("kill-buffer-hook"); | |
fd6cfe11 | 5311 | Fput (Qkill_buffer_hook, Qpermanent_local, Qt); |
1ab256cb | 5312 | |
48265e61 DL |
5313 | Qucs_set_table_for_input = intern ("ucs-set-table-for-input"); |
5314 | ||
1ab256cb | 5315 | Vprin1_to_string_buffer = Fget_buffer_create (build_string (" prin1")); |
000f8083 | 5316 | |
1ab256cb RM |
5317 | /* super-magic invisible buffer */ |
5318 | Vbuffer_alist = Qnil; | |
5319 | ||
ffd56f97 | 5320 | Fset_buffer (Fget_buffer_create (build_string ("*scratch*"))); |
7775635d KH |
5321 | |
5322 | inhibit_modification_hooks = 0; | |
1ab256cb RM |
5323 | } |
5324 | ||
dfcf069d | 5325 | void |
1ab256cb RM |
5326 | init_buffer () |
5327 | { | |
2381d133 | 5328 | char *pwd; |
136351b7 | 5329 | Lisp_Object temp; |
b639c9be | 5330 | int len; |
1ab256cb | 5331 | |
b86af064 | 5332 | #ifdef USE_MMAP_FOR_BUFFERS |
93c27ef1 GM |
5333 | { |
5334 | /* When using the ralloc implementation based on mmap(2), buffer | |
5335 | text pointers will have been set to null in the dumped Emacs. | |
5336 | Map new memory. */ | |
5337 | struct buffer *b; | |
177c0ea7 | 5338 | |
93c27ef1 GM |
5339 | for (b = all_buffers; b; b = b->next) |
5340 | if (b->text->beg == NULL) | |
b86af064 | 5341 | enlarge_buffer_text (b, 0); |
93c27ef1 | 5342 | } |
b86af064 | 5343 | #endif /* USE_MMAP_FOR_BUFFERS */ |
177c0ea7 | 5344 | |
1ab256cb | 5345 | Fset_buffer (Fget_buffer_create (build_string ("*scratch*"))); |
3d871c85 RS |
5346 | if (NILP (buffer_defaults.enable_multibyte_characters)) |
5347 | Fset_buffer_multibyte (Qnil); | |
2381d133 | 5348 | |
01537133 | 5349 | pwd = get_current_dir_name (); |
a17b5ed1 | 5350 | |
156bdb41 | 5351 | if (!pwd) |
a17b5ed1 | 5352 | fatal ("`get_current_dir_name' failed: %s\n", strerror (errno)); |
1ab256cb RM |
5353 | |
5354 | #ifndef VMS | |
5355 | /* Maybe this should really use some standard subroutine | |
5356 | whose definition is filename syntax dependent. */ | |
b639c9be RF |
5357 | len = strlen (pwd); |
5358 | if (!(IS_DIRECTORY_SEP (pwd[len - 1]))) | |
f7975d07 | 5359 | { |
156bdb41 | 5360 | /* Grow buffer to add directory separator and '\0'. */ |
b639c9be RF |
5361 | pwd = (char *) xrealloc (pwd, len + 2); |
5362 | pwd[len] = DIRECTORY_SEP; | |
5363 | pwd[len + 1] = '\0'; | |
f7975d07 | 5364 | } |
1ab256cb | 5365 | #endif /* not VMS */ |
0995fa35 | 5366 | |
01537133 | 5367 | current_buffer->directory = make_unibyte_string (pwd, strlen (pwd)); |
dcd74c5f | 5368 | if (! NILP (buffer_defaults.enable_multibyte_characters)) |
f9962371 | 5369 | /* At this moment, we still don't know how to decode the |
156bdb41 | 5370 | directory name. So, we keep the bytes in multibyte form so |
dcd74c5f KH |
5371 | that ENCODE_FILE correctly gets the original bytes. */ |
5372 | current_buffer->directory | |
5373 | = string_to_multibyte (current_buffer->directory); | |
136351b7 | 5374 | |
0995fa35 RS |
5375 | /* Add /: to the front of the name |
5376 | if it would otherwise be treated as magic. */ | |
5377 | temp = Ffind_file_name_handler (current_buffer->directory, Qt); | |
81ab2e07 KH |
5378 | if (! NILP (temp) |
5379 | /* If the default dir is just /, TEMP is non-nil | |
5380 | because of the ange-ftp completion handler. | |
5381 | However, it is not necessary to turn / into /:/. | |
5382 | So avoid doing that. */ | |
d5db4077 | 5383 | && strcmp ("/", SDATA (current_buffer->directory))) |
0995fa35 RS |
5384 | current_buffer->directory |
5385 | = concat2 (build_string ("/:"), current_buffer->directory); | |
5386 | ||
136351b7 RS |
5387 | temp = get_minibuffer (0); |
5388 | XBUFFER (temp)->directory = current_buffer->directory; | |
01537133 EZ |
5389 | |
5390 | free (pwd); | |
1ab256cb RM |
5391 | } |
5392 | ||
d6aa1876 SM |
5393 | /* Similar to defvar_lisp but define a variable whose value is the Lisp |
5394 | Object stored in the current buffer. address is the address of the slot | |
5395 | in the buffer that is current now. */ | |
5396 | ||
5397 | /* TYPE is nil for a general Lisp variable. | |
5398 | An integer specifies a type; then only LIsp values | |
5399 | with that type code are allowed (except that nil is allowed too). | |
5400 | LNAME is the LIsp-level variable name. | |
5401 | VNAME is the name of the buffer slot. | |
5402 | DOC is a dummy where you write the doc string as a comment. */ | |
5403 | #define DEFVAR_PER_BUFFER(lname, vname, type, doc) \ | |
5404 | defvar_per_buffer (lname, vname, type, 0) | |
5405 | ||
5406 | static void | |
5407 | defvar_per_buffer (namestring, address, type, doc) | |
5408 | char *namestring; | |
5409 | Lisp_Object *address; | |
5410 | Lisp_Object type; | |
5411 | char *doc; | |
5412 | { | |
5413 | Lisp_Object sym, val; | |
5414 | int offset; | |
5415 | ||
5416 | sym = intern (namestring); | |
5417 | val = allocate_misc (); | |
5418 | offset = (char *)address - (char *)current_buffer; | |
5419 | ||
5420 | XMISCTYPE (val) = Lisp_Misc_Buffer_Objfwd; | |
5421 | XBUFFER_OBJFWD (val)->offset = offset; | |
64e16c3c | 5422 | XBUFFER_OBJFWD (val)->slottype = type; |
d6aa1876 SM |
5423 | SET_SYMBOL_VALUE (sym, val); |
5424 | PER_BUFFER_SYMBOL (offset) = sym; | |
d6aa1876 SM |
5425 | |
5426 | if (PER_BUFFER_IDX (offset) == 0) | |
5427 | /* Did a DEFVAR_PER_BUFFER without initializing the corresponding | |
5428 | slot of buffer_local_flags */ | |
5429 | abort (); | |
5430 | } | |
5431 | ||
5432 | ||
1ab256cb | 5433 | /* initialize the buffer routines */ |
dfcf069d | 5434 | void |
1ab256cb RM |
5435 | syms_of_buffer () |
5436 | { | |
9115729e KH |
5437 | staticpro (&last_overlay_modification_hooks); |
5438 | last_overlay_modification_hooks | |
5439 | = Fmake_vector (make_number (10), Qnil); | |
5440 | ||
1ab256cb RM |
5441 | staticpro (&Vbuffer_defaults); |
5442 | staticpro (&Vbuffer_local_symbols); | |
5443 | staticpro (&Qfundamental_mode); | |
5444 | staticpro (&Qmode_class); | |
5445 | staticpro (&QSFundamental); | |
5446 | staticpro (&Vbuffer_alist); | |
5447 | staticpro (&Qprotected_field); | |
5448 | staticpro (&Qpermanent_local); | |
2f7a359d RS |
5449 | Qpermanent_local_hook = intern ("permanent-local-hook"); |
5450 | staticpro (&Qpermanent_local_hook); | |
1ab256cb | 5451 | staticpro (&Qkill_buffer_hook); |
22378665 | 5452 | Qoverlayp = intern ("overlayp"); |
52f8ec73 | 5453 | staticpro (&Qoverlayp); |
9d7608b7 KH |
5454 | Qevaporate = intern ("evaporate"); |
5455 | staticpro (&Qevaporate); | |
294d215f | 5456 | Qmodification_hooks = intern ("modification-hooks"); |
22378665 | 5457 | staticpro (&Qmodification_hooks); |
294d215f | 5458 | Qinsert_in_front_hooks = intern ("insert-in-front-hooks"); |
22378665 | 5459 | staticpro (&Qinsert_in_front_hooks); |
294d215f | 5460 | Qinsert_behind_hooks = intern ("insert-behind-hooks"); |
22378665 | 5461 | staticpro (&Qinsert_behind_hooks); |
5fe0b67e | 5462 | Qget_file_buffer = intern ("get-file-buffer"); |
22378665 | 5463 | staticpro (&Qget_file_buffer); |
5985d248 KH |
5464 | Qpriority = intern ("priority"); |
5465 | staticpro (&Qpriority); | |
5466 | Qwindow = intern ("window"); | |
5467 | staticpro (&Qwindow); | |
bbbe9545 KH |
5468 | Qbefore_string = intern ("before-string"); |
5469 | staticpro (&Qbefore_string); | |
5470 | Qafter_string = intern ("after-string"); | |
5471 | staticpro (&Qafter_string); | |
22378665 RS |
5472 | Qfirst_change_hook = intern ("first-change-hook"); |
5473 | staticpro (&Qfirst_change_hook); | |
5474 | Qbefore_change_functions = intern ("before-change-functions"); | |
5475 | staticpro (&Qbefore_change_functions); | |
5476 | Qafter_change_functions = intern ("after-change-functions"); | |
5477 | staticpro (&Qafter_change_functions); | |
2f7a359d | 5478 | /* The next one is initialized in init_buffer_once. */ |
48265e61 | 5479 | staticpro (&Qucs_set_table_for_input); |
1ab256cb | 5480 | |
5b20caf0 RS |
5481 | Qkill_buffer_query_functions = intern ("kill-buffer-query-functions"); |
5482 | staticpro (&Qkill_buffer_query_functions); | |
5483 | ||
1ab256cb RM |
5484 | Fput (Qprotected_field, Qerror_conditions, |
5485 | Fcons (Qprotected_field, Fcons (Qerror, Qnil))); | |
5486 | Fput (Qprotected_field, Qerror_message, | |
5487 | build_string ("Attempt to modify a protected field")); | |
5488 | ||
5489 | /* All these use DEFVAR_LISP_NOPRO because the slots in | |
5490 | buffer_defaults will all be marked via Vbuffer_defaults. */ | |
5491 | ||
5492 | DEFVAR_LISP_NOPRO ("default-mode-line-format", | |
7ee72033 MB |
5493 | &buffer_defaults.mode_line_format, |
5494 | doc: /* Default value of `mode-line-format' for buffers that don't override it. | |
018ba359 | 5495 | This is the same as (default-value 'mode-line-format). */); |
1ab256cb | 5496 | |
045dee35 | 5497 | DEFVAR_LISP_NOPRO ("default-header-line-format", |
7ee72033 MB |
5498 | &buffer_defaults.header_line_format, |
5499 | doc: /* Default value of `header-line-format' for buffers that don't override it. | |
018ba359 | 5500 | This is the same as (default-value 'header-line-format). */); |
0552666b | 5501 | |
7ee72033 MB |
5502 | DEFVAR_LISP_NOPRO ("default-cursor-type", &buffer_defaults.cursor_type, |
5503 | doc: /* Default value of `cursor-type' for buffers that don't override it. | |
018ba359 | 5504 | This is the same as (default-value 'cursor-type). */); |
bd96bd79 | 5505 | |
a3bbced0 | 5506 | DEFVAR_LISP_NOPRO ("default-line-spacing", |
7ee72033 MB |
5507 | &buffer_defaults.extra_line_spacing, |
5508 | doc: /* Default value of `line-spacing' for buffers that don't override it. | |
018ba359 | 5509 | This is the same as (default-value 'line-spacing). */); |
a3bbced0 | 5510 | |
187ccf49 KS |
5511 | DEFVAR_LISP_NOPRO ("default-cursor-in-non-selected-windows", |
5512 | &buffer_defaults.cursor_in_non_selected_windows, | |
5513 | doc: /* Default value of `cursor-in-non-selected-windows'. | |
5514 | This is the same as (default-value 'cursor-in-non-selected-windows). */); | |
5515 | ||
1ab256cb | 5516 | DEFVAR_LISP_NOPRO ("default-abbrev-mode", |
efc7e75f | 5517 | &buffer_defaults.abbrev_mode, |
7ee72033 | 5518 | doc: /* Default value of `abbrev-mode' for buffers that do not override it. |
018ba359 | 5519 | This is the same as (default-value 'abbrev-mode). */); |
1ab256cb RM |
5520 | |
5521 | DEFVAR_LISP_NOPRO ("default-ctl-arrow", | |
efc7e75f | 5522 | &buffer_defaults.ctl_arrow, |
7ee72033 | 5523 | doc: /* Default value of `ctl-arrow' for buffers that do not override it. |
018ba359 | 5524 | This is the same as (default-value 'ctl-arrow). */); |
1ab256cb | 5525 | |
5e2ad10b JB |
5526 | DEFVAR_LISP_NOPRO ("default-direction-reversed", |
5527 | &buffer_defaults.direction_reversed, | |
5528 | doc: /* Default value of `direction-reversed' for buffers that do not override it. | |
018ba359 | 5529 | This is the same as (default-value 'direction-reversed). */); |
177c0ea7 | 5530 | |
5e2ad10b JB |
5531 | DEFVAR_LISP_NOPRO ("default-enable-multibyte-characters", |
5532 | &buffer_defaults.enable_multibyte_characters, | |
5533 | doc: /* *Default value of `enable-multibyte-characters' for buffers not overriding it. | |
018ba359 | 5534 | This is the same as (default-value 'enable-multibyte-characters). */); |
177c0ea7 | 5535 | |
5e2ad10b JB |
5536 | DEFVAR_LISP_NOPRO ("default-buffer-file-coding-system", |
5537 | &buffer_defaults.buffer_file_coding_system, | |
5538 | doc: /* Default value of `buffer-file-coding-system' for buffers not overriding it. | |
018ba359 | 5539 | This is the same as (default-value 'buffer-file-coding-system). */); |
177c0ea7 | 5540 | |
1ab256cb | 5541 | DEFVAR_LISP_NOPRO ("default-truncate-lines", |
efc7e75f PJ |
5542 | &buffer_defaults.truncate_lines, |
5543 | doc: /* Default value of `truncate-lines' for buffers that do not override it. | |
018ba359 | 5544 | This is the same as (default-value 'truncate-lines). */); |
1ab256cb RM |
5545 | |
5546 | DEFVAR_LISP_NOPRO ("default-fill-column", | |
efc7e75f PJ |
5547 | &buffer_defaults.fill_column, |
5548 | doc: /* Default value of `fill-column' for buffers that do not override it. | |
018ba359 | 5549 | This is the same as (default-value 'fill-column). */); |
1ab256cb RM |
5550 | |
5551 | DEFVAR_LISP_NOPRO ("default-left-margin", | |
efc7e75f PJ |
5552 | &buffer_defaults.left_margin, |
5553 | doc: /* Default value of `left-margin' for buffers that do not override it. | |
018ba359 | 5554 | This is the same as (default-value 'left-margin). */); |
1ab256cb RM |
5555 | |
5556 | DEFVAR_LISP_NOPRO ("default-tab-width", | |
bc0ede35 | 5557 | &buffer_defaults.tab_width, |
23625946 | 5558 | doc: /* Default value of `tab-width' for buffers that do not override it. |
018ba359 | 5559 | This is the same as (default-value 'tab-width). */); |
1ab256cb RM |
5560 | |
5561 | DEFVAR_LISP_NOPRO ("default-case-fold-search", | |
efc7e75f PJ |
5562 | &buffer_defaults.case_fold_search, |
5563 | doc: /* Default value of `case-fold-search' for buffers that don't override it. | |
018ba359 | 5564 | This is the same as (default-value 'case-fold-search). */); |
1ab256cb | 5565 | |
f7975d07 | 5566 | #ifdef DOS_NT |
177c0ea7 | 5567 | DEFVAR_LISP_NOPRO ("default-buffer-file-type", |
7ee72033 | 5568 | &buffer_defaults.buffer_file_type, |
efc7e75f | 5569 | doc: /* Default file type for buffers that do not override it. |
018ba359 PJ |
5570 | This is the same as (default-value 'buffer-file-type). |
5571 | The file type is nil for text, t for binary. */); | |
54ad07d3 RS |
5572 | #endif |
5573 | ||
0552666b | 5574 | DEFVAR_LISP_NOPRO ("default-left-margin-width", |
2ad8731a | 5575 | &buffer_defaults.left_margin_cols, |
efc7e75f | 5576 | doc: /* Default value of `left-margin-width' for buffers that don't override it. |
018ba359 | 5577 | This is the same as (default-value 'left-margin-width). */); |
0552666b GM |
5578 | |
5579 | DEFVAR_LISP_NOPRO ("default-right-margin-width", | |
2ad8731a KS |
5580 | &buffer_defaults.right_margin_cols, |
5581 | doc: /* Default value of `right-margin-width' for buffers that don't override it. | |
018ba359 | 5582 | This is the same as (default-value 'right-margin-width). */); |
177c0ea7 | 5583 | |
2ad8731a KS |
5584 | DEFVAR_LISP_NOPRO ("default-left-fringe-width", |
5585 | &buffer_defaults.left_fringe_width, | |
5586 | doc: /* Default value of `left-fringe-width' for buffers that don't override it. | |
5587 | This is the same as (default-value 'left-fringe-width). */); | |
5588 | ||
5589 | DEFVAR_LISP_NOPRO ("default-right-fringe-width", | |
5590 | &buffer_defaults.right_fringe_width, | |
5591 | doc: /* Default value of `right-fringe-width' for buffers that don't override it. | |
5592 | This is the same as (default-value 'right-fringe-width). */); | |
5593 | ||
5594 | DEFVAR_LISP_NOPRO ("default-fringes-outside-margins", | |
5595 | &buffer_defaults.fringes_outside_margins, | |
5596 | doc: /* Default value of `fringes-outside-margins' for buffers that don't override it. | |
5597 | This is the same as (default-value 'fringes-outside-margins). */); | |
5598 | ||
5599 | DEFVAR_LISP_NOPRO ("default-scroll-bar-width", | |
5600 | &buffer_defaults.scroll_bar_width, | |
5601 | doc: /* Default value of `scroll-bar-width' for buffers that don't override it. | |
5602 | This is the same as (default-value 'scroll-bar-width). */); | |
5603 | ||
5604 | DEFVAR_LISP_NOPRO ("default-vertical-scroll-bar", | |
5605 | &buffer_defaults.vertical_scroll_bar_type, | |
5606 | doc: /* Default value of `vertical-scroll-bar' for buffers that don't override it. | |
5607 | This is the same as (default-value 'vertical-scroll-bar). */); | |
5608 | ||
0552666b | 5609 | DEFVAR_LISP_NOPRO ("default-indicate-empty-lines", |
efc7e75f PJ |
5610 | &buffer_defaults.indicate_empty_lines, |
5611 | doc: /* Default value of `indicate-empty-lines' for buffers that don't override it. | |
018ba359 | 5612 | This is the same as (default-value 'indicate-empty-lines). */); |
177c0ea7 | 5613 | |
6b61353c KH |
5614 | DEFVAR_LISP_NOPRO ("default-indicate-buffer-boundaries", |
5615 | &buffer_defaults.indicate_buffer_boundaries, | |
5616 | doc: /* Default value of `indicate-buffer-boundaries' for buffers that don't override it. | |
5617 | This is the same as (default-value 'indicate-buffer-boundaries). */); | |
5618 | ||
c6a46372 KS |
5619 | DEFVAR_LISP_NOPRO ("default-fringe-indicator-alist", |
5620 | &buffer_defaults.fringe_indicator_alist, | |
5621 | doc: /* Default value of `fringe-indicator-alist' for buffers that don't override it. | |
5622 | This is the same as (default-value 'fringe-indicator-alist'). */); | |
5623 | ||
5624 | DEFVAR_LISP_NOPRO ("default-fringe-cursor-alist", | |
5625 | &buffer_defaults.fringe_cursor_alist, | |
5626 | doc: /* Default value of `fringe-cursor-alist' for buffers that don't override it. | |
5627 | This is the same as (default-value 'fringe-cursor-alist'). */); | |
5628 | ||
0552666b | 5629 | DEFVAR_LISP_NOPRO ("default-scroll-up-aggressively", |
efc7e75f | 5630 | &buffer_defaults.scroll_up_aggressively, |
7614d762 RS |
5631 | doc: /* Default value of `scroll-up-aggressively'. |
5632 | This value applies in buffers that don't have their own local values. | |
fc961256 | 5633 | This is the same as (default-value 'scroll-up-aggressively). */); |
177c0ea7 | 5634 | |
0552666b | 5635 | DEFVAR_LISP_NOPRO ("default-scroll-down-aggressively", |
efc7e75f | 5636 | &buffer_defaults.scroll_down_aggressively, |
7614d762 RS |
5637 | doc: /* Default value of `scroll-down-aggressively'. |
5638 | This value applies in buffers that don't have their own local values. | |
fc961256 | 5639 | This is the same as (default-value 'scroll-down-aggressively). */); |
177c0ea7 | 5640 | |
045dee35 | 5641 | DEFVAR_PER_BUFFER ("header-line-format", |
018ba359 | 5642 | ¤t_buffer->header_line_format, |
7ee72033 | 5643 | Qnil, |
7614d762 RS |
5644 | doc: /* Analogous to `mode-line-format', but controls the header line. |
5645 | The header line appears, optionally, at the top of a window; | |
5646 | the mode line appears at the bottom. */); | |
177c0ea7 | 5647 | |
1ab256cb | 5648 | DEFVAR_PER_BUFFER ("mode-line-format", ¤t_buffer->mode_line_format, |
efc7e75f PJ |
5649 | Qnil, |
5650 | doc: /* Template for displaying mode line for current buffer. | |
018ba359 PJ |
5651 | Each buffer has its own value of this variable. |
5652 | Value may be nil, a string, a symbol or a list or cons cell. | |
5653 | A value of nil means don't display a mode line. | |
5654 | For a symbol, its value is used (but it is ignored if t or nil). | |
5655 | A string appearing directly as the value of a symbol is processed verbatim | |
5656 | in that the %-constructs below are not recognized. | |
ed463255 | 5657 | Note that unless the symbol is marked as a `risky-local-variable', all |
177c0ea7 | 5658 | properties in any strings, as well as all :eval and :propertize forms |
ed463255 | 5659 | in the value of that symbol will be ignored. |
018ba359 | 5660 | For a list of the form `(:eval FORM)', FORM is evaluated and the result |
9c3eecf3 RS |
5661 | is used as a mode line element. Be careful--FORM should not load any files, |
5662 | because that can cause an infinite recursion. | |
ed463255 KS |
5663 | For a list of the form `(:propertize ELT PROPS...)', ELT is displayed |
5664 | with the specified properties PROPS applied. | |
018ba359 PJ |
5665 | For a list whose car is a symbol, the symbol's value is taken, |
5666 | and if that is non-nil, the cadr of the list is processed recursively. | |
5667 | Otherwise, the caddr of the list (if there is one) is processed. | |
5668 | For a list whose car is a string or list, each element is processed | |
5669 | recursively and the results are effectively concatenated. | |
5670 | For a list whose car is an integer, the cdr of the list is processed | |
5671 | and padded (if the number is positive) or truncated (if negative) | |
5672 | to the width specified by that number. | |
5673 | A string is printed verbatim in the mode line except for %-constructs: | |
5674 | (%-constructs are allowed when the string is the entire mode-line-format | |
5675 | or when it is found in a cons-cell or a list) | |
5676 | %b -- print buffer name. %f -- print visited file name. | |
5677 | %F -- print frame name. | |
5678 | %* -- print %, * or hyphen. %+ -- print *, % or hyphen. | |
5679 | %& is like %*, but ignore read-only-ness. | |
5680 | % means buffer is read-only and * means it is modified. | |
5681 | For a modified read-only buffer, %* gives % and %+ gives *. | |
5682 | %s -- print process status. %l -- print the current line number. | |
5683 | %c -- print the current column number (this makes editing slower). | |
5684 | To make the column number update correctly in all cases, | |
5685 | `column-number-mode' must be non-nil. | |
6b61353c KH |
5686 | %i -- print the size of the buffer. |
5687 | %I -- like %i, but use k, M, G, etc., to abbreviate. | |
018ba359 PJ |
5688 | %p -- print percent of buffer above top of window, or Top, Bot or All. |
5689 | %P -- print percent of buffer above bottom of window, perhaps plus Top, | |
5690 | or print Bottom or All. | |
018ba359 | 5691 | %n -- print Narrow if appropriate. |
dafbe726 | 5692 | %t -- visited file is text or binary (if OS supports this distinction). |
47419860 | 5693 | %z -- print mnemonics of keyboard, terminal, and buffer coding systems. |
018ba359 | 5694 | %Z -- like %z, but including the end-of-line format. |
dafbe726 | 5695 | %e -- print error message about full memory. |
f7165034 NR |
5696 | %@ -- print @ or hyphen. @ means that default-directory is on a |
5697 | remote machine. | |
018ba359 PJ |
5698 | %[ -- print one [ for each recursive editing level. %] similar. |
5699 | %% -- print %. %- -- print infinitely many dashes. | |
5700 | Decimal digits after the % specify field width to which to pad. */); | |
5701 | ||
7ee72033 | 5702 | DEFVAR_LISP_NOPRO ("default-major-mode", &buffer_defaults.major_mode, |
efc7e75f | 5703 | doc: /* *Major mode for new buffers. Defaults to `fundamental-mode'. |
0493af6f JB |
5704 | A value of nil means use current buffer's major mode, |
5705 | provided it is not marked as "special". | |
557ca2c1 RS |
5706 | |
5707 | When a mode is used by default, `find-file' switches to it | |
5708 | before it reads the contents into the buffer and before | |
5709 | it finishes setting up the buffer. Thus, the mode and | |
5710 | its hooks should not expect certain variables such as | |
5711 | `buffer-read-only' and `buffer-file-coding-system' to be set up. */); | |
1ab256cb RM |
5712 | |
5713 | DEFVAR_PER_BUFFER ("major-mode", ¤t_buffer->major_mode, | |
7ee72033 | 5714 | make_number (Lisp_Symbol), |
efc7e75f | 5715 | doc: /* Symbol for current buffer's major mode. */); |
1ab256cb RM |
5716 | |
5717 | DEFVAR_PER_BUFFER ("mode-name", ¤t_buffer->mode_name, | |
c01d0677 | 5718 | Qnil, |
64a7c220 | 5719 | doc: /* Pretty name of current buffer's major mode. |
d224e8c2 GM |
5720 | Usually a string. See `mode-line-format' for other possible forms. |
5721 | Use the function `format-mode-line' to get the value as a string. */); | |
1ab256cb | 5722 | |
d6aa1876 SM |
5723 | DEFVAR_PER_BUFFER ("local-abbrev-table", ¤t_buffer->abbrev_table, Qnil, |
5724 | doc: /* Local (mode-specific) abbrev table of current buffer. */); | |
5725 | ||
7ee72033 | 5726 | DEFVAR_PER_BUFFER ("abbrev-mode", ¤t_buffer->abbrev_mode, Qnil, |
efc7e75f | 5727 | doc: /* Non-nil turns on automatic expansion of abbrevs as they are inserted. */); |
1ab256cb RM |
5728 | |
5729 | DEFVAR_PER_BUFFER ("case-fold-search", ¤t_buffer->case_fold_search, | |
7ee72033 | 5730 | Qnil, |
efc7e75f | 5731 | doc: /* *Non-nil if searches and matches should ignore case. */); |
1ab256cb RM |
5732 | |
5733 | DEFVAR_PER_BUFFER ("fill-column", ¤t_buffer->fill_column, | |
7ee72033 | 5734 | make_number (Lisp_Int), |
1ac5826d | 5735 | doc: /* *Column beyond which automatic line-wrapping should happen. |
f1ccb329 | 5736 | Interactively, you can set the buffer local value using \\[set-fill-column]. */); |
1ab256cb RM |
5737 | |
5738 | DEFVAR_PER_BUFFER ("left-margin", ¤t_buffer->left_margin, | |
7ee72033 | 5739 | make_number (Lisp_Int), |
fc961256 | 5740 | doc: /* *Column for the default `indent-line-function' to indent to. |
018ba359 | 5741 | Linefeed indents to this column in Fundamental mode. */); |
1ab256cb RM |
5742 | |
5743 | DEFVAR_PER_BUFFER ("tab-width", ¤t_buffer->tab_width, | |
7ee72033 | 5744 | make_number (Lisp_Int), |
efc7e75f | 5745 | doc: /* *Distance between tab stops (for display of tab characters), in columns. */); |
1ab256cb | 5746 | |
7ee72033 | 5747 | DEFVAR_PER_BUFFER ("ctl-arrow", ¤t_buffer->ctl_arrow, Qnil, |
efc7e75f | 5748 | doc: /* *Non-nil means display control chars with uparrow. |
018ba359 PJ |
5749 | A value of nil means use backslash and octal digits. |
5750 | This variable does not apply to characters whose display is specified | |
5751 | in the current display table (if there is one). */); | |
1ab256cb | 5752 | |
3b06f880 | 5753 | DEFVAR_PER_BUFFER ("enable-multibyte-characters", |
1bf08baf | 5754 | ¤t_buffer->enable_multibyte_characters, |
a9b9a780 | 5755 | Qnil, |
efc7e75f | 5756 | doc: /* Non-nil means the buffer contents are regarded as multi-byte characters. |
018ba359 PJ |
5757 | Otherwise they are regarded as unibyte. This affects the display, |
5758 | file I/O and the behavior of various editing commands. | |
5759 | ||
5760 | This variable is buffer-local but you cannot set it directly; | |
5761 | use the function `set-buffer-multibyte' to change a buffer's representation. | |
5762 | Changing its default value with `setq-default' is supported. | |
5763 | See also variable `default-enable-multibyte-characters' and Info node | |
5764 | `(elisp)Text Representations'. */); | |
a9b9a780 | 5765 | XSYMBOL (intern ("enable-multibyte-characters"))->constant = 1; |
3b06f880 | 5766 | |
c71b5d9b | 5767 | DEFVAR_PER_BUFFER ("buffer-file-coding-system", |
7ee72033 | 5768 | ¤t_buffer->buffer_file_coding_system, Qnil, |
efc7e75f | 5769 | doc: /* Coding system to be used for encoding the buffer contents on saving. |
018ba359 PJ |
5770 | This variable applies to saving the buffer, and also to `write-region' |
5771 | and other functions that use `write-region'. | |
5772 | It does not apply to sending output to subprocesses, however. | |
5773 | ||
5774 | If this is nil, the buffer is saved without any code conversion | |
5775 | unless some coding system is specified in `file-coding-system-alist' | |
5776 | for the buffer file. | |
5777 | ||
31a6cb06 EZ |
5778 | If the text to be saved cannot be encoded as specified by this variable, |
5779 | an alternative encoding is selected by `select-safe-coding-system', which see. | |
5780 | ||
018ba359 PJ |
5781 | The variable `coding-system-for-write', if non-nil, overrides this variable. |
5782 | ||
5783 | This variable is never applied to a way of decoding a file while reading it. */); | |
c71b5d9b | 5784 | |
3b06f880 | 5785 | DEFVAR_PER_BUFFER ("direction-reversed", ¤t_buffer->direction_reversed, |
7ee72033 | 5786 | Qnil, |
efc7e75f | 5787 | doc: /* *Non-nil means lines in the buffer are displayed right to left. */); |
3b06f880 | 5788 | |
7ee72033 | 5789 | DEFVAR_PER_BUFFER ("truncate-lines", ¤t_buffer->truncate_lines, Qnil, |
7614d762 RS |
5790 | doc: /* *Non-nil means do not display continuation lines. |
5791 | Instead, give each line of text just one screen line. | |
018ba359 PJ |
5792 | |
5793 | Note that this is overridden by the variable | |
5794 | `truncate-partial-width-windows' if that variable is non-nil | |
5795 | and this buffer is not full-frame width. */); | |
1ab256cb | 5796 | |
f7975d07 | 5797 | #ifdef DOS_NT |
54ad07d3 | 5798 | DEFVAR_PER_BUFFER ("buffer-file-type", ¤t_buffer->buffer_file_type, |
7ee72033 | 5799 | Qnil, |
efc7e75f | 5800 | doc: /* Non-nil if the visited file is a binary file. |
018ba359 PJ |
5801 | This variable is meaningful on MS-DOG and Windows NT. |
5802 | On those systems, it is automatically local in every buffer. | |
5803 | On other systems, this variable is normally always nil. */); | |
54ad07d3 RS |
5804 | #endif |
5805 | ||
1ab256cb | 5806 | DEFVAR_PER_BUFFER ("default-directory", ¤t_buffer->directory, |
7ee72033 | 5807 | make_number (Lisp_String), |
efc7e75f | 5808 | doc: /* Name of default directory of current buffer. Should end with slash. |
018ba359 | 5809 | To interactively change the default directory, use command `cd'. */); |
1ab256cb RM |
5810 | |
5811 | DEFVAR_PER_BUFFER ("auto-fill-function", ¤t_buffer->auto_fill_function, | |
7ee72033 | 5812 | Qnil, |
efc7e75f | 5813 | doc: /* Function called (if non-nil) to perform auto-fill. |
018ba359 PJ |
5814 | It is called after self-inserting any character specified in |
5815 | the `auto-fill-chars' table. | |
5816 | NOTE: This variable is not a hook; | |
5817 | its value may not be a list of functions. */); | |
1ab256cb RM |
5818 | |
5819 | DEFVAR_PER_BUFFER ("buffer-file-name", ¤t_buffer->filename, | |
7ee72033 | 5820 | make_number (Lisp_String), |
efc7e75f | 5821 | doc: /* Name of file visited in current buffer, or nil if not visiting a file. */); |
1ab256cb | 5822 | |
f6ed2e84 | 5823 | DEFVAR_PER_BUFFER ("buffer-file-truename", ¤t_buffer->file_truename, |
7ee72033 | 5824 | make_number (Lisp_String), |
efc7e75f | 5825 | doc: /* Abbreviated truename of file visited in current buffer, or nil if none. |
018ba359 PJ |
5826 | The truename of a file is calculated by `file-truename' |
5827 | and then abbreviated with `abbreviate-file-name'. */); | |
f6ed2e84 | 5828 | |
1ab256cb | 5829 | DEFVAR_PER_BUFFER ("buffer-auto-save-file-name", |
3f5fcd47 | 5830 | ¤t_buffer->auto_save_file_name, |
7ee72033 | 5831 | make_number (Lisp_String), |
7614d762 RS |
5832 | doc: /* Name of file for auto-saving current buffer. |
5833 | If it is nil, that means don't auto-save this buffer. */); | |
1ab256cb | 5834 | |
7ee72033 | 5835 | DEFVAR_PER_BUFFER ("buffer-read-only", ¤t_buffer->read_only, Qnil, |
efc7e75f | 5836 | doc: /* Non-nil if this buffer is read-only. */); |
1ab256cb | 5837 | |
7ee72033 | 5838 | DEFVAR_PER_BUFFER ("buffer-backed-up", ¤t_buffer->backed_up, Qnil, |
efc7e75f | 5839 | doc: /* Non-nil if this buffer's file has been backed up. |
018ba359 | 5840 | Backing up is done before the first time the file is saved. */); |
1ab256cb RM |
5841 | |
5842 | DEFVAR_PER_BUFFER ("buffer-saved-size", ¤t_buffer->save_length, | |
7ee72033 | 5843 | make_number (Lisp_Int), |
efc7e75f | 5844 | doc: /* Length of current buffer when last read in, saved or auto-saved. |
018ba359 | 5845 | 0 initially. */); |
1ab256cb RM |
5846 | |
5847 | DEFVAR_PER_BUFFER ("selective-display", ¤t_buffer->selective_display, | |
7ee72033 | 5848 | Qnil, |
7614d762 | 5849 | doc: /* Non-nil enables selective display. |
a66f285a JB |
5850 | An integer N as value means display only lines |
5851 | that start with less than N columns of space. | |
7614d762 RS |
5852 | A value of t means that the character ^M makes itself and |
5853 | all the rest of the line invisible; also, when saving the buffer | |
5854 | in a file, save the ^M as a newline. */); | |
1ab256cb RM |
5855 | |
5856 | #ifndef old | |
5857 | DEFVAR_PER_BUFFER ("selective-display-ellipses", | |
5858 | ¤t_buffer->selective_display_ellipses, | |
7ee72033 | 5859 | Qnil, |
3f676284 | 5860 | doc: /* Non-nil means display ... on previous line when a line is invisible. */); |
1ab256cb RM |
5861 | #endif |
5862 | ||
7ee72033 | 5863 | DEFVAR_PER_BUFFER ("overwrite-mode", ¤t_buffer->overwrite_mode, Qnil, |
efc7e75f | 5864 | doc: /* Non-nil if self-insertion should replace existing text. |
018ba359 PJ |
5865 | The value should be one of `overwrite-mode-textual', |
5866 | `overwrite-mode-binary', or nil. | |
5867 | If it is `overwrite-mode-textual', self-insertion still | |
5868 | inserts at the end of a line, and inserts when point is before a tab, | |
5869 | until the tab is filled in. | |
5870 | If `overwrite-mode-binary', self-insertion replaces newlines and tabs too. */); | |
5871 | ||
54939090 | 5872 | DEFVAR_PER_BUFFER ("buffer-display-table", ¤t_buffer->display_table, |
7ee72033 | 5873 | Qnil, |
efc7e75f | 5874 | doc: /* Display table that controls display of the contents of current buffer. |
018ba359 PJ |
5875 | |
5876 | If this variable is nil, the value of `standard-display-table' is used. | |
5877 | Each window can have its own, overriding display table, see | |
5878 | `set-window-display-table' and `window-display-table'. | |
5879 | ||
5880 | The display table is a char-table created with `make-display-table'. | |
5881 | A char-table is an array indexed by character codes. Normal array | |
5882 | primitives `aref' and `aset' can be used to access elements of a char-table. | |
5883 | ||
5884 | Each of the char-table elements control how to display the corresponding | |
5885 | text character: the element at index C in the table says how to display | |
5886 | the character whose code is C. Each element should be a vector of | |
426a9163 JB |
5887 | characters or nil. The value nil means display the character in the |
5888 | default fashion; otherwise, the characters from the vector are delivered | |
5889 | to the screen instead of the original character. | |
018ba359 | 5890 | |
5fd11dc8 | 5891 | For example, (aset buffer-display-table ?X [?Y]) tells Emacs |
adbb3b05 | 5892 | to display a capital Y instead of each X character. |
018ba359 PJ |
5893 | |
5894 | In addition, a char-table has six extra slots to control the display of: | |
5895 | ||
5896 | the end of a truncated screen line (extra-slot 0, a single character); | |
5897 | the end of a continued line (extra-slot 1, a single character); | |
5898 | the escape character used to display character codes in octal | |
5899 | (extra-slot 2, a single character); | |
5900 | the character used as an arrow for control characters (extra-slot 3, | |
5901 | a single character); | |
5902 | the decoration indicating the presence of invisible lines (extra-slot 4, | |
5903 | a vector of characters); | |
5904 | the character used to draw the border between side-by-side windows | |
5905 | (extra-slot 5, a single character). | |
5906 | ||
5907 | See also the functions `display-table-slot' and `set-display-table-slot'. */); | |
1ab256cb | 5908 | |
2ad8731a | 5909 | DEFVAR_PER_BUFFER ("left-margin-width", ¤t_buffer->left_margin_cols, |
7ee72033 | 5910 | Qnil, |
efc7e75f | 5911 | doc: /* *Width of left marginal area for display of a buffer. |
018ba359 | 5912 | A value of nil means no marginal area. */); |
177c0ea7 | 5913 | |
2ad8731a | 5914 | DEFVAR_PER_BUFFER ("right-margin-width", ¤t_buffer->right_margin_cols, |
7ee72033 | 5915 | Qnil, |
efc7e75f | 5916 | doc: /* *Width of right marginal area for display of a buffer. |
018ba359 | 5917 | A value of nil means no marginal area. */); |
177c0ea7 | 5918 | |
2ad8731a KS |
5919 | DEFVAR_PER_BUFFER ("left-fringe-width", ¤t_buffer->left_fringe_width, |
5920 | Qnil, | |
5921 | doc: /* *Width of this buffer's left fringe (in pixels). | |
5922 | A value of 0 means no left fringe is shown in this buffer's window. | |
5923 | A value of nil means to use the left fringe width from the window's frame. */); | |
5924 | ||
5925 | DEFVAR_PER_BUFFER ("right-fringe-width", ¤t_buffer->right_fringe_width, | |
5926 | Qnil, | |
5927 | doc: /* *Width of this buffer's right fringe (in pixels). | |
5928 | A value of 0 means no right fringe is shown in this buffer's window. | |
5929 | A value of nil means to use the right fringe width from the window's frame. */); | |
5930 | ||
5931 | DEFVAR_PER_BUFFER ("fringes-outside-margins", ¤t_buffer->fringes_outside_margins, | |
5932 | Qnil, | |
5933 | doc: /* *Non-nil means to display fringes outside display margins. | |
5934 | A value of nil means to display fringes between margins and buffer text. */); | |
5935 | ||
5936 | DEFVAR_PER_BUFFER ("scroll-bar-width", ¤t_buffer->scroll_bar_width, | |
5937 | Qnil, | |
5938 | doc: /* *Width of this buffer's scroll bars in pixels. | |
5939 | A value of nil means to use the scroll bar width from the window's frame. */); | |
5940 | ||
5941 | DEFVAR_PER_BUFFER ("vertical-scroll-bar", ¤t_buffer->vertical_scroll_bar_type, | |
5942 | Qnil, | |
5943 | doc: /* *Position of this buffer's vertical scroll bar. | |
7c6b2007 | 5944 | The value takes effect whenever you tell a window to display this buffer; |
188577ce | 5945 | for instance, with `set-window-buffer' or when `display-buffer' displays it. |
7c6b2007 | 5946 | |
fc2c8887 RS |
5947 | A value of `left' or `right' means put the vertical scroll bar at that side |
5948 | of the window; a value of nil means don't show any vertical scroll bars. | |
5949 | A value of t (the default) means do whatever the window's frame specifies. */); | |
2ad8731a | 5950 | |
0552666b | 5951 | DEFVAR_PER_BUFFER ("indicate-empty-lines", |
7ee72033 | 5952 | ¤t_buffer->indicate_empty_lines, Qnil, |
efc7e75f | 5953 | doc: /* *Visually indicate empty lines after the buffer end. |
018ba359 PJ |
5954 | If non-nil, a bitmap is displayed in the left fringe of a window on |
5955 | window-systems. */); | |
177c0ea7 | 5956 | |
6b61353c KH |
5957 | DEFVAR_PER_BUFFER ("indicate-buffer-boundaries", |
5958 | ¤t_buffer->indicate_buffer_boundaries, Qnil, | |
5959 | doc: /* *Visually indicate buffer boundaries and scrolling. | |
5960 | If non-nil, the first and last line of the buffer are marked in the fringe | |
5961 | of a window on window-systems with angle bitmaps, or if the window can be | |
5962 | scrolled, the top and bottom line of the window are marked with up and down | |
5963 | arrow bitmaps. | |
b2229037 KS |
5964 | |
5965 | If value is a symbol `left' or `right', both angle and arrow bitmaps | |
79e3497d | 5966 | are displayed in the left or right fringe, resp. Any other value |
845a78b4 | 5967 | that doesn't look like an alist means display the angle bitmaps in |
79e3497d | 5968 | the left fringe but no arrows. |
b2229037 | 5969 | |
79e3497d RS |
5970 | You can exercise more precise control by using an alist as the |
5971 | value. Each alist element (INDICATOR . POSITION) specifies | |
5972 | where to show one of the indicators. INDICATOR is one of `top', | |
b2229037 KS |
5973 | `bottom', `up', `down', or t, which specifies the default position, |
5974 | and POSITION is one of `left', `right', or nil, meaning do not show | |
5975 | this indicator. | |
5976 | ||
5977 | For example, ((top . left) (t . right)) places the top angle bitmap in | |
5978 | left fringe, the bottom angle bitmap in right fringe, and both arrow | |
6b61353c | 5979 | bitmaps in right fringe. To show just the angle bitmaps in the left |
b2229037 | 5980 | fringe, but no arrow bitmaps, use ((top . left) (bottom . left)). */); |
6b61353c | 5981 | |
c6a46372 KS |
5982 | DEFVAR_PER_BUFFER ("fringe-indicator-alist", |
5983 | ¤t_buffer->fringe_indicator_alist, Qnil, | |
5984 | doc: /* *Mapping from logical to physical fringe indicator bitmaps. | |
5985 | The value is an alist where each element (INDICATOR . BITMAPS) | |
5986 | specifies the fringe bitmaps used to display a specific logical | |
5987 | fringe indicator. | |
5988 | ||
5989 | INDICATOR specifies the logical indicator type which is one of the | |
5990 | following symbols: `truncation' , `continuation', `overlay-arrow', | |
5991 | `top', `bottom', `up', `down', `one-line', `empty-line', or `unknown'. | |
5992 | ||
5993 | BITMAPS is list of symbols (LEFT RIGHT [LEFT1 RIGHT1]) which specifies | |
5994 | the actual bitmap shown in the left or right fringe for the logical | |
5995 | indicator. LEFT and RIGHT are the bitmaps shown in the left and/or | |
5996 | right fringe for the specific indicator. The LEFT1 or RIGHT1 bitmaps | |
5997 | are used only for the `bottom' and `one-line' indicators when the last | |
63af6055 | 5998 | \(only) line in has no final newline. BITMAPS may also be a single |
c6a46372 KS |
5999 | symbol which is used in both left and right fringes. */); |
6000 | ||
6001 | DEFVAR_PER_BUFFER ("fringe-cursor-alist", | |
6002 | ¤t_buffer->fringe_cursor_alist, Qnil, | |
6003 | doc: /* *Mapping from logical to physical fringe cursor bitmaps. | |
6004 | The value is an alist where each element (CURSOR . BITMAP) | |
6005 | specifies the fringe bitmaps used to display a specific logical | |
6006 | cursor type in the fringe. | |
6007 | ||
6008 | CURSOR specifies the logical cursor type which is one of the following | |
6009 | symbols: `box' , `hollow', `bar', `hbar', or `hollow-small'. The last | |
6010 | one is used to show a hollow cursor on narrow lines display lines | |
6011 | where the normal hollow cursor will not fit. | |
6012 | ||
6013 | BITMAP is the corresponding fringe bitmap shown for the logical | |
6014 | cursor type. */); | |
6015 | ||
0552666b | 6016 | DEFVAR_PER_BUFFER ("scroll-up-aggressively", |
7ee72033 | 6017 | ¤t_buffer->scroll_up_aggressively, Qnil, |
4e0692c1 RS |
6018 | doc: /* How far to scroll windows upward. |
6019 | If you move point off the bottom, the window scrolls automatically. | |
426a9163 | 6020 | This variable controls how far it scrolls. The value nil, the default, |
4e0692c1 RS |
6021 | means scroll to center point. A fraction means scroll to put point |
6022 | that fraction of the window's height from the bottom of the window. | |
6023 | When the value is 0.0, point goes at the bottom line, which in the simple | |
6024 | case that you moved off with C-f means scrolling just one line. 1.0 means | |
6025 | point goes at the top, so that in that simple case, the window | |
e5f95d5c | 6026 | scrolls by a full window height. Meaningful values are |
175e9712 | 6027 | between 0.0 and 1.0, inclusive. */); |
177c0ea7 | 6028 | |
0552666b | 6029 | DEFVAR_PER_BUFFER ("scroll-down-aggressively", |
7ee72033 | 6030 | ¤t_buffer->scroll_down_aggressively, Qnil, |
4e0692c1 RS |
6031 | doc: /* How far to scroll windows downward. |
6032 | If you move point off the top, the window scrolls automatically. | |
426a9163 | 6033 | This variable controls how far it scrolls. The value nil, the default, |
4e0692c1 RS |
6034 | means scroll to center point. A fraction means scroll to put point |
6035 | that fraction of the window's height from the top of the window. | |
6036 | When the value is 0.0, point goes at the top line, which in the simple | |
6037 | case that you moved off with C-b means scrolling just one line. 1.0 means | |
6038 | point goes at the bottom, so that in that simple case, the window | |
e5f95d5c | 6039 | scrolls by a full window height. Meaningful values are |
175e9712 | 6040 | between 0.0 and 1.0, inclusive. */); |
177c0ea7 | 6041 | |
1ab256cb RM |
6042 | /*DEFVAR_LISP ("debug-check-symbol", &Vcheck_symbol, |
6043 | "Don't ask."); | |
6044 | */ | |
1ab256cb | 6045 | |
7ee72033 MB |
6046 | DEFVAR_LISP ("before-change-functions", &Vbefore_change_functions, |
6047 | doc: /* List of functions to call before each text change. | |
018ba359 PJ |
6048 | Two arguments are passed to each function: the positions of |
6049 | the beginning and end of the range of old text to be changed. | |
6050 | \(For an insertion, the beginning and end are at the same place.) | |
6051 | No information is given about the length of the text after the change. | |
6052 | ||
6053 | Buffer changes made while executing the `before-change-functions' | |
6054 | don't call any before-change or after-change functions. | |
6055 | That's because these variables are temporarily set to nil. | |
6056 | As a result, a hook function cannot straightforwardly alter the value of | |
6057 | these variables. See the Emacs Lisp manual for a way of | |
6058 | accomplishing an equivalent result by using other variables. | |
6059 | ||
6060 | If an unhandled error happens in running these functions, | |
6061 | the variable's value remains nil. That prevents the error | |
6062 | from happening repeatedly and making Emacs nonfunctional. */); | |
5f079267 RS |
6063 | Vbefore_change_functions = Qnil; |
6064 | ||
7ee72033 | 6065 | DEFVAR_LISP ("after-change-functions", &Vafter_change_functions, |
eacdfade | 6066 | doc: /* List of functions to call after each text change. |
018ba359 PJ |
6067 | Three arguments are passed to each function: the positions of |
6068 | the beginning and end of the range of changed text, | |
6069 | and the length in bytes of the pre-change text replaced by that range. | |
6070 | \(For an insertion, the pre-change length is zero; | |
6071 | for a deletion, that length is the number of bytes deleted, | |
6072 | and the post-change beginning and end are at the same place.) | |
6073 | ||
6074 | Buffer changes made while executing the `after-change-functions' | |
6075 | don't call any before-change or after-change functions. | |
6076 | That's because these variables are temporarily set to nil. | |
6077 | As a result, a hook function cannot straightforwardly alter the value of | |
6078 | these variables. See the Emacs Lisp manual for a way of | |
6079 | accomplishing an equivalent result by using other variables. | |
6080 | ||
6081 | If an unhandled error happens in running these functions, | |
6082 | the variable's value remains nil. That prevents the error | |
6083 | from happening repeatedly and making Emacs nonfunctional. */); | |
5f079267 RS |
6084 | Vafter_change_functions = Qnil; |
6085 | ||
7ee72033 | 6086 | DEFVAR_LISP ("first-change-hook", &Vfirst_change_hook, |
efc7e75f | 6087 | doc: /* A list of functions to call before changing a buffer which is unmodified. |
018ba359 | 6088 | The functions are run using the `run-hooks' function. */); |
dbc4e1c1 | 6089 | Vfirst_change_hook = Qnil; |
1ab256cb | 6090 | |
7ee72033 MB |
6091 | DEFVAR_PER_BUFFER ("buffer-undo-list", ¤t_buffer->undo_list, Qnil, |
6092 | doc: /* List of undo entries in current buffer. | |
018ba359 PJ |
6093 | Recent changes come first; older changes follow newer. |
6094 | ||
6095 | An entry (BEG . END) represents an insertion which begins at | |
6096 | position BEG and ends at position END. | |
6097 | ||
6098 | An entry (TEXT . POSITION) represents the deletion of the string TEXT | |
6099 | from (abs POSITION). If POSITION is positive, point was at the front | |
6100 | of the text being deleted; if negative, point was at the end. | |
6101 | ||
6102 | An entry (t HIGH . LOW) indicates that the buffer previously had | |
6103 | \"unmodified\" status. HIGH and LOW are the high and low 16-bit portions | |
6104 | of the visited file's modification time, as of that time. If the | |
6105 | modification time of the most recent save is different, this entry is | |
6106 | obsolete. | |
6107 | ||
6108 | An entry (nil PROPERTY VALUE BEG . END) indicates that a text property | |
6109 | was modified between BEG and END. PROPERTY is the property name, | |
6110 | and VALUE is the old value. | |
6111 | ||
7405f386 KS |
6112 | An entry (apply FUN-NAME . ARGS) means undo the change with |
6113 | \(apply FUN-NAME ARGS). | |
6114 | ||
6115 | An entry (apply DELTA BEG END FUN-NAME . ARGS) supports selective undo | |
6116 | in the active region. BEG and END is the range affected by this entry | |
6117 | and DELTA is the number of bytes added or deleted in that range by | |
6118 | this change. | |
c6c7dc03 | 6119 | |
018ba359 PJ |
6120 | An entry (MARKER . DISTANCE) indicates that the marker MARKER |
6121 | was adjusted in position by the offset DISTANCE (an integer). | |
6122 | ||
6123 | An entry of the form POSITION indicates that point was at the buffer | |
6124 | location given by the integer. Undoing an entry of this form places | |
6125 | point at POSITION. | |
6126 | ||
b4c4f2f4 JB |
6127 | Entries with value `nil' mark undo boundaries. The undo command treats |
6128 | the changes between two undo boundaries as a single step to be undone. | |
018ba359 PJ |
6129 | |
6130 | If the value of the variable is t, undo information is not recorded. */); | |
6131 | ||
7ee72033 MB |
6132 | DEFVAR_PER_BUFFER ("mark-active", ¤t_buffer->mark_active, Qnil, |
6133 | doc: /* Non-nil means the mark and region are currently active in this buffer. */); | |
018ba359 | 6134 | |
7ee72033 MB |
6135 | DEFVAR_PER_BUFFER ("cache-long-line-scans", ¤t_buffer->cache_long_line_scans, Qnil, |
6136 | doc: /* Non-nil means that Emacs should use caches to handle long lines more quickly. | |
018ba359 PJ |
6137 | |
6138 | Normally, the line-motion functions work by scanning the buffer for | |
5629f29b DK |
6139 | newlines. Columnar operations (like `move-to-column' and |
6140 | `compute-motion') also work by scanning the buffer, summing character | |
018ba359 PJ |
6141 | widths as they go. This works well for ordinary text, but if the |
6142 | buffer's lines are very long (say, more than 500 characters), these | |
6143 | motion functions will take longer to execute. Emacs may also take | |
6144 | longer to update the display. | |
6145 | ||
5629f29b | 6146 | If `cache-long-line-scans' is non-nil, these motion functions cache the |
018ba359 PJ |
6147 | results of their scans, and consult the cache to avoid rescanning |
6148 | regions of the buffer until the text is modified. The caches are most | |
6149 | beneficial when they prevent the most searching---that is, when the | |
6150 | buffer contains long lines and large regions of characters with the | |
6151 | same, fixed screen width. | |
6152 | ||
5629f29b | 6153 | When `cache-long-line-scans' is non-nil, processing short lines will |
018ba359 PJ |
6154 | become slightly slower (because of the overhead of consulting the |
6155 | cache), and the caches will use memory roughly proportional to the | |
6156 | number of newlines and characters whose screen width varies. | |
6157 | ||
6158 | The caches require no explicit maintenance; their accuracy is | |
6159 | maintained internally by the Emacs primitives. Enabling or disabling | |
6160 | the cache should not affect the behavior of any of the motion | |
6161 | functions; it should only affect their performance. */); | |
6162 | ||
7ee72033 MB |
6163 | DEFVAR_PER_BUFFER ("point-before-scroll", ¤t_buffer->point_before_scroll, Qnil, |
6164 | doc: /* Value of point before the last series of scroll operations, or nil. */); | |
018ba359 | 6165 | |
7ee72033 MB |
6166 | DEFVAR_PER_BUFFER ("buffer-file-format", ¤t_buffer->file_format, Qnil, |
6167 | doc: /* List of formats to use when saving this buffer. | |
018ba359 | 6168 | Formats are defined by `format-alist'. This variable is |
a9b9a780 | 6169 | set when a file is visited. */); |
be9aafdd | 6170 | |
71ed49fa LT |
6171 | DEFVAR_PER_BUFFER ("buffer-auto-save-file-format", |
6172 | ¤t_buffer->auto_save_file_format, Qnil, | |
6173 | doc: /* *Format in which to write auto-save files. | |
6174 | Should be a list of symbols naming formats that are defined in `format-alist'. | |
6175 | If it is t, which is the default, auto-save files are written in the | |
6176 | same format as a regular save would use. */); | |
6177 | ||
3cb719bd | 6178 | DEFVAR_PER_BUFFER ("buffer-invisibility-spec", |
7ee72033 MB |
6179 | ¤t_buffer->invisibility_spec, Qnil, |
6180 | doc: /* Invisibility spec of this buffer. | |
018ba359 PJ |
6181 | The default is t, which means that text is invisible |
6182 | if it has a non-nil `invisible' property. | |
6183 | If the value is a list, a text character is invisible if its `invisible' | |
b49dd850 | 6184 | property is an element in that list (or is a list with members in common). |
018ba359 PJ |
6185 | If an element is a cons cell of the form (PROP . ELLIPSIS), |
6186 | then characters with property value PROP are invisible, | |
6187 | and they have an ellipsis as well if ELLIPSIS is non-nil. */); | |
3cb719bd | 6188 | |
7962a441 | 6189 | DEFVAR_PER_BUFFER ("buffer-display-count", |
7ee72033 MB |
6190 | ¤t_buffer->display_count, Qnil, |
6191 | doc: /* A number incremented each time this buffer is displayed in a window. | |
018ba359 | 6192 | The function `set-window-buffer' increments it. */); |
3fd364db RS |
6193 | |
6194 | DEFVAR_PER_BUFFER ("buffer-display-time", | |
7ee72033 MB |
6195 | ¤t_buffer->display_time, Qnil, |
6196 | doc: /* Time stamp updated each time this buffer is displayed in a window. | |
018ba359 PJ |
6197 | The function `set-window-buffer' updates this variable |
6198 | to the value obtained by calling `current-time'. | |
6199 | If the buffer has never been shown in a window, the value is nil. */); | |
6200 | ||
7ee72033 | 6201 | DEFVAR_LISP ("transient-mark-mode", &Vtransient_mark_mode, |
526c9df9 | 6202 | doc: /* */); |
c48f61ef | 6203 | Vtransient_mark_mode = Qnil; |
526c9df9 CY |
6204 | /* The docstring is in simple.el. If we put it here, it would be |
6205 | overwritten when transient-mark-mode is defined using | |
6206 | define-minor-mode. */ | |
c48f61ef | 6207 | |
7ee72033 MB |
6208 | DEFVAR_LISP ("inhibit-read-only", &Vinhibit_read_only, |
6209 | doc: /* *Non-nil means disregard read-only status of buffers or characters. | |
018ba359 PJ |
6210 | If the value is t, disregard `buffer-read-only' and all `read-only' |
6211 | text properties. If the value is a list, disregard `buffer-read-only' | |
6212 | and disregard a `read-only' text property if the property value | |
6213 | is a member of the list. */); | |
a96b68f1 RS |
6214 | Vinhibit_read_only = Qnil; |
6215 | ||
7ee72033 | 6216 | DEFVAR_PER_BUFFER ("cursor-type", ¤t_buffer->cursor_type, Qnil, |
f6e22881 | 6217 | doc: /* Cursor to use when this buffer is in the selected window. |
018ba359 PJ |
6218 | Values are interpreted as follows: |
6219 | ||
b8dc613f JB |
6220 | t use the cursor specified for the frame |
6221 | nil don't display a cursor | |
6222 | box display a filled box cursor | |
6223 | hollow display a hollow box cursor | |
6224 | bar display a vertical bar cursor with default width | |
6225 | (bar . WIDTH) display a vertical bar cursor with width WIDTH | |
6226 | hbar display a horizontal bar cursor with default height | |
b4234f4c | 6227 | (hbar . HEIGHT) display a horizontal bar cursor with height HEIGHT |
b8dc613f | 6228 | ANYTHING ELSE display a hollow box cursor |
cd8d5236 RS |
6229 | |
6230 | When the buffer is displayed in a nonselected window, | |
6231 | this variable has no effect; the cursor appears as a hollow box. */); | |
bb2ec976 | 6232 | |
a3bbced0 | 6233 | DEFVAR_PER_BUFFER ("line-spacing", |
7ee72033 MB |
6234 | ¤t_buffer->extra_line_spacing, Qnil, |
6235 | doc: /* Additional space to put between lines when displaying a buffer. | |
60ebfdf3 KS |
6236 | The space is measured in pixels, and put below lines on window systems. |
6237 | If value is a floating point number, it specifies the spacing relative | |
fc961256 | 6238 | to the default frame line height. A value of nil means add no extra space. */); |
a3bbced0 | 6239 | |
0124c5bd | 6240 | DEFVAR_PER_BUFFER ("cursor-in-non-selected-windows", |
187ccf49 | 6241 | ¤t_buffer->cursor_in_non_selected_windows, Qnil, |
f6e22881 | 6242 | doc: /* *Cursor type to display in non-selected windows. |
fc961256 | 6243 | The value t means to use hollow box cursor. See `cursor-type' for other values. */); |
0124c5bd | 6244 | |
7ee72033 | 6245 | DEFVAR_LISP ("kill-buffer-query-functions", &Vkill_buffer_query_functions, |
f6e22881 JB |
6246 | doc: /* List of functions called with no args to query before killing a buffer. |
6247 | The buffer being killed will be current while the functions are running. | |
6248 | If any of them returns nil, the buffer is not killed. */); | |
dcdffbf6 RS |
6249 | Vkill_buffer_query_functions = Qnil; |
6250 | ||
43ed3b8d CY |
6251 | DEFVAR_LISP ("change-major-mode-hook", &Vchange_major_mode_hook, |
6252 | doc: /* Normal hook run before changing the major mode of a buffer. | |
6253 | The function `kill-all-local-variables' runs this before doing anything else. */); | |
6254 | Vchange_major_mode_hook = Qnil; | |
6255 | Qchange_major_mode_hook = intern ("change-major-mode-hook"); | |
6256 | staticpro (&Qchange_major_mode_hook); | |
6257 | ||
0dc88e60 | 6258 | defsubr (&Sbuffer_live_p); |
1ab256cb RM |
6259 | defsubr (&Sbuffer_list); |
6260 | defsubr (&Sget_buffer); | |
6261 | defsubr (&Sget_file_buffer); | |
6262 | defsubr (&Sget_buffer_create); | |
336cd056 | 6263 | defsubr (&Smake_indirect_buffer); |
01050cb5 | 6264 | defsubr (&Sgenerate_new_buffer_name); |
1ab256cb RM |
6265 | defsubr (&Sbuffer_name); |
6266 | /*defsubr (&Sbuffer_number);*/ | |
6267 | defsubr (&Sbuffer_file_name); | |
336cd056 | 6268 | defsubr (&Sbuffer_base_buffer); |
79aa712d | 6269 | defsubr (&Sbuffer_local_value); |
1ab256cb RM |
6270 | defsubr (&Sbuffer_local_variables); |
6271 | defsubr (&Sbuffer_modified_p); | |
6272 | defsubr (&Sset_buffer_modified_p); | |
6273 | defsubr (&Sbuffer_modified_tick); | |
3e145152 | 6274 | defsubr (&Sbuffer_chars_modified_tick); |
1ab256cb RM |
6275 | defsubr (&Srename_buffer); |
6276 | defsubr (&Sother_buffer); | |
1ab256cb RM |
6277 | defsubr (&Sbuffer_enable_undo); |
6278 | defsubr (&Skill_buffer); | |
a9ee7a59 | 6279 | defsubr (&Sset_buffer_major_mode); |
1ab256cb RM |
6280 | defsubr (&Sswitch_to_buffer); |
6281 | defsubr (&Spop_to_buffer); | |
6282 | defsubr (&Scurrent_buffer); | |
6283 | defsubr (&Sset_buffer); | |
6284 | defsubr (&Sbarf_if_buffer_read_only); | |
6285 | defsubr (&Sbury_buffer); | |
3ac81adb | 6286 | defsubr (&Serase_buffer); |
13cda5f9 | 6287 | defsubr (&Sbuffer_swap_text); |
3ac81adb | 6288 | defsubr (&Sset_buffer_multibyte); |
1ab256cb | 6289 | defsubr (&Skill_all_local_variables); |
2eec3b4e | 6290 | |
52f8ec73 | 6291 | defsubr (&Soverlayp); |
2eec3b4e RS |
6292 | defsubr (&Smake_overlay); |
6293 | defsubr (&Sdelete_overlay); | |
6294 | defsubr (&Smove_overlay); | |
8ebafa8d JB |
6295 | defsubr (&Soverlay_start); |
6296 | defsubr (&Soverlay_end); | |
6297 | defsubr (&Soverlay_buffer); | |
6298 | defsubr (&Soverlay_properties); | |
2eec3b4e | 6299 | defsubr (&Soverlays_at); |
74514898 | 6300 | defsubr (&Soverlays_in); |
2eec3b4e | 6301 | defsubr (&Snext_overlay_change); |
239c932b | 6302 | defsubr (&Sprevious_overlay_change); |
2eec3b4e RS |
6303 | defsubr (&Soverlay_recenter); |
6304 | defsubr (&Soverlay_lists); | |
6305 | defsubr (&Soverlay_get); | |
6306 | defsubr (&Soverlay_put); | |
a8c21b48 | 6307 | defsubr (&Srestore_buffer_modified_p); |
1ab256cb RM |
6308 | } |
6309 | ||
dfcf069d | 6310 | void |
1ab256cb RM |
6311 | keys_of_buffer () |
6312 | { | |
6313 | initial_define_key (control_x_map, 'b', "switch-to-buffer"); | |
6314 | initial_define_key (control_x_map, 'k', "kill-buffer"); | |
4158c17d RM |
6315 | |
6316 | /* This must not be in syms_of_buffer, because Qdisabled is not | |
6317 | initialized when that function gets called. */ | |
6318 | Fput (intern ("erase-buffer"), Qdisabled, Qt); | |
1ab256cb | 6319 | } |
6b61353c KH |
6320 | |
6321 | /* arch-tag: e48569bf-69a9-4b65-a23b-8e68769436e1 | |
6322 | (do not change this comment) */ |