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1.1 root 1: /* Buffer manipulation primitives for GNU Emacs.
2: Copyright (C) 1985, 1986, 1987, 1988, 1990 Free Software Foundation, Inc.
3:
4: This file is part of GNU Emacs.
5:
6: GNU Emacs is free software; you can redistribute it and/or modify
7: it under the terms of the GNU General Public License as published by
8: the Free Software Foundation; either version 1, or (at your option)
9: any later version.
10:
11: GNU Emacs is distributed in the hope that it will be useful,
12: but WITHOUT ANY WARRANTY; without even the implied warranty of
13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14: GNU General Public License for more details.
15:
16: You should have received a copy of the GNU General Public License
17: along with GNU Emacs; see the file COPYING. If not, write to
18: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
19:
20:
21: #include <sys/param.h>
22:
23: #ifndef MAXPATHLEN
24: /* in 4.1, param.h fails to define this. */
25: #define MAXPATHLEN 1024
26: #endif /* not MAXPATHLEN */
27:
28: #ifdef NULL
29: #undef NULL
30: #endif
31: #include "config.h"
32: #include "lisp.h"
33: #include "window.h"
34: #include "commands.h"
35: #include "buffer.h"
36: #include "syntax.h"
37:
38: struct buffer *current_buffer; /* the current buffer */
39:
40: /* First buffer in chain of all buffers (in reverse order of creation).
41: Threaded through ->next. */
42:
43: struct buffer *all_buffers;
44:
45: /* This structure holds the default values of the buffer-local variables
46: defined with DEFVAR_PER_BUFFER, that have special slots in each buffer.
47: The default value occupies the same slot in this structure
48: as an individual buffer's value occupies in that buffer.
49: Setting the default value also goes through the alist of buffers
50: and stores into each buffer that does not say it has a local value. */
51:
52: struct buffer buffer_defaults;
53: /* A Lisp_Object pointer to the above, used for staticpro */
54: static Lisp_Object Vbuffer_defaults;
55:
56: /* This structure marks which slots in a buffer have corresponding
57: default values in buffer_defaults.
58: Each such slot has a nonzero value in this structure.
59: The value has only one nonzero bit.
60:
61: When a buffer has its own local value for a slot,
62: the bit for that slot (found in the same slot in this structure)
63: is turned on in the buffer's local_var_flags slot.
64:
65: If a slot in this structure is -1, then even though there may
66: be a DEFVAR_PER_BUFFER for the slot, there is no default value for it;
67: and the corresponding slot in buffer_defaults is not used.
68:
69: If a slot is -2, then there is no DEFVAR_PER_BUFFER for it,
70: but there is a default value which is copied into each buffer.
71:
72: If a slot in this structure corresponding to a DEFVAR_PER_BUFFER is
73: zero, that is a bug */
74:
75: struct buffer buffer_local_flags;
76:
77: /* This structure holds the names of symbols whose values may be
78: buffer-local. It is indexed and accessed in the same way as the above. */
79:
80: struct buffer buffer_local_symbols;
81: /* A Lisp_Object pointer to the above, used for staticpro */
82: static Lisp_Object Vbuffer_local_symbols;
83:
84: Lisp_Object Fset_buffer ();
85:
86: /* Alist of all buffer names vs the buffers. */
87: /* This used to be a variable, but is no longer,
88: to prevent lossage due to user rplac'ing this alist or its elements. */
89: Lisp_Object Vbuffer_alist;
90:
91: Lisp_Object Qfundamental_mode, Qmode_class;
92:
93: Lisp_Object QSFundamental; /* A string "Fundamental" */
94:
95: /* For debugging; temporary. See set_buffer_internal. */
96: /* Lisp_Object Qlisp_mode, Vcheck_symbol; */
97:
98: nsberror (spec)
99: Lisp_Object spec;
100: {
101: if (XTYPE (spec) == Lisp_String)
102: error ("No buffer named %s", XSTRING (spec)->data);
103: error ("Invalid buffer argument");
104: }
105:
106: DEFUN ("buffer-list", Fbuffer_list, Sbuffer_list, 0, 0, 0,
107: "Return a list of all buffers.")
108: ()
109: {
110: return Fmapcar (Qcdr, Vbuffer_alist);
111: }
112:
113: DEFUN ("get-buffer", Fget_buffer, Sget_buffer, 1, 1, 0,
114: "Return the buffer named NAME (a string).\n\
115: It is found by looking up NAME in buffer-alist.\n\
116: If there is no buffer named NAME, nil is returned.\n\
117: NAME may also be a buffer; it is returned.")
118: (name)
119: register Lisp_Object name;
120: {
121: if (XTYPE (name) == Lisp_Buffer)
122: return name;
123: CHECK_STRING (name, 0);
124:
125: return Fcdr (Fassoc (name, Vbuffer_alist));
126: }
127:
128: DEFUN ("get-file-buffer", Fget_file_buffer, Sget_file_buffer, 1, 1, 0,
129: "Return the buffer visiting file FILENAME (a string).\n\
130: If there is no such buffer, nil is returned.")
131: (filename)
132: register Lisp_Object filename;
133: {
134: register Lisp_Object tail, buf, tem;
135: CHECK_STRING (filename, 0);
136: filename = Fexpand_file_name (filename, Qnil);
137:
138: for (tail = Vbuffer_alist; CONSP (tail); tail = XCONS (tail)->cdr)
139: {
140: buf = Fcdr (XCONS (tail)->car);
141: if (XTYPE (buf) != Lisp_Buffer) continue;
142: if (XTYPE (XBUFFER (buf)->filename) != Lisp_String) continue;
143: tem = Fstring_equal (XBUFFER (buf)->filename, filename);
144: if (!NULL (tem))
145: return buf;
146: }
147: return Qnil;
148: }
149:
150: DEFUN ("get-buffer-create", Fget_buffer_create, Sget_buffer_create, 1, 1, 0,
151: "Like get-buffer but creates a buffer named NAME and returns it if none already exists.")
152: (name)
153: register Lisp_Object name;
154: {
155: register Lisp_Object buf, function, tem;
156: int count = specpdl_ptr - specpdl;
157: register struct buffer *b;
158: register unsigned char *data;
159: /* register struct buffer *bx; */
160:
161: buf = Fget_buffer (name);
162: if (!NULL (buf)) return buf;
163:
164: b = (struct buffer *) malloc (sizeof (struct buffer));
165: if (!b) memory_full ();
166:
167: BUF_GAP_SIZE (b) = 20;
168: data = (unsigned char *) malloc (BUF_GAP_SIZE (b));
169: if (!data)
170: {
171: free (b);
172: memory_full ();
173: }
174: BUF_BEG_ADDR (b) = data;
175: BUF_PT (b) = 1;
176: BUF_GPT (b) = 1;
177: BUF_BEGV (b) = 1;
178: BUF_ZV (b) = 1;
179: BUF_Z (b) = 1;
180: BUF_MODIFF (b) = 1;
181:
182: /* Put this on the chain of all buffers including killed ones. */
183: b->next = all_buffers;
184: all_buffers = b;
185:
186: /* Put this in the alist of all live buffers. */
187: XSET (buf, Lisp_Buffer, b);
188: #if 0
189: XSETTYPE (buf, Lisp_Buffer);
190: bx = b; /* Use of bx avoids compiler bug on Sun */
191: XSETBUFFER (buf, bx);
192: #endif
193: Vbuffer_alist = nconc2 (Vbuffer_alist, Fcons (Fcons (name, buf), Qnil));
194:
195: b->mark = Fmake_marker ();
196: b->markers = Qnil;
197: b->name = name;
198:
199: /* Enable undo in this buffer unless name starts with a space. */
200: if (XSTRING (name)->data[0] != ' ')
201: b->undo_list = Qnil;
202: else
203: b->undo_list = Qt;
204:
205: reset_buffer (b);
206:
207: function = buffer_defaults.major_mode;
208: if (NULL (function))
209: {
210: tem = Fget (current_buffer->major_mode, Qmode_class);
211: if (EQ (tem, Qnil))
212: function = current_buffer->major_mode;
213: }
214:
215: if (NULL (function) || EQ (function, Qfundamental_mode))
216: return buf;
217:
218: /* To select a nonfundamental mode,
219: select the buffer temporarily and then call the mode function. */
220:
221: record_unwind_protect (save_excursion_restore, save_excursion_save ());
222:
223: Fset_buffer (buf);
224: call0 (function);
225:
226: unbind_to (count);
227: return buf;
228: }
229:
230: /* Reinitialize everything about a buffer except its name and contents. */
231:
232: void
233: reset_buffer (b)
234: register struct buffer *b;
235: {
236: b->filename = Qnil;
237: b->directory = (current_buffer) ? current_buffer->directory : Qnil;
238: b->modtime = 0;
239: b->save_modified = 1;
240: b->save_length = 0;
241: b->last_window_start = 1;
242: b->backed_up = Qnil;
243: b->auto_save_modified = 0;
244: b->auto_save_file_name = Qnil;
245: b->read_only = Qnil;
246: reset_buffer_local_variables(b);
247: }
248:
249: reset_buffer_local_variables(b)
250: register struct buffer *b;
251: {
252: register int offset;
253:
254: /* Reset the major mode to Fundamental, together with all the
255: things that depend on the major mode.
256: default-major-mode is handled at a higher level.
257: We ignore it here. */
258: b->major_mode = Qfundamental_mode;
259: b->keymap = Qnil;
260: b->abbrev_table = Vfundamental_mode_abbrev_table;
261: b->mode_name = QSFundamental;
262:
263: /* Reset all per-buffer variables to their defaults. */
264: b->local_var_alist = Qnil;
265: b->local_var_flags = 0;
266:
267: /* For each slot that has a default value,
268: copy that into the slot. */
269:
270: for (offset = (char *)&buffer_local_flags.name - (char *)&buffer_local_flags;
271: offset < sizeof (struct buffer);
272: offset += sizeof (Lisp_Object)) /* sizeof int == sizeof Lisp_Object */
273: if (*(int *)(offset + (char *) &buffer_local_flags) > 0
274: || *(int *)(offset + (char *) &buffer_local_flags) == -2)
275: *(Lisp_Object *)(offset + (char *)b) =
276: *(Lisp_Object *)(offset + (char *)&buffer_defaults);
277: }
278:
279: DEFUN ("generate-new-buffer", Fgenerate_new_buffer, Sgenerate_new_buffer,
280: 1, 1, 0,
281: "Creates and returns a buffer named NAME if one does not already exist,\n\
282: else tries adding successive suffixes to NAME until a new buffer-name is\n\
283: formed, then creates and returns a new buffer with that new name.")
284: (name)
285: register Lisp_Object name;
286: {
287: register Lisp_Object gentemp, tem;
288: int count;
289: char number[10];
290:
291: CHECK_STRING (name, 0);
292:
293: tem = Fget_buffer (name);
294: if (NULL (tem))
295: return Fget_buffer_create (name);
296:
297: count = 1;
298: while (1)
299: {
300: sprintf (number, "<%d>", ++count);
301: gentemp = concat2 (name, build_string (number));
302: tem = Fget_buffer (gentemp);
303: if (NULL (tem))
304: return Fget_buffer_create (gentemp);
305: }
306: }
307:
308:
309: DEFUN ("buffer-name", Fbuffer_name, Sbuffer_name, 0, 1, 0,
310: "Return the name of BUFFER, as a string.\n\
311: No arg means return name of current buffer.")
312: (buffer)
313: register Lisp_Object buffer;
314: {
315: if (NULL (buffer))
316: return current_buffer->name;
317: CHECK_BUFFER (buffer, 0);
318: return XBUFFER (buffer)->name;
319: }
320:
321: #ifdef NOTDEF /* Useless. If you need this, you should be using `eq'
322: DEFUN ("buffer-number", Fbuffer_number, Sbuffer_number, 0, 1, 0,
323: "Return the number of BUFFER.\n\
324: No arg means return number of current buffer.")
325: (buffer)
326: Lisp_Object buffer;
327: {
328: if (NULL (buffer))
329: return current_buffer->number;
330: CHECK_BUFFER (buffer, 0);
331: return XBUFFER (buffer)->number;
332: }
333: */
334: #endif NOTDEF
335:
336: DEFUN ("buffer-file-name", Fbuffer_file_name, Sbuffer_file_name, 0, 1, 0,
337: "Return name of file BUFFER is visiting, or NIL if none.\n\
338: No argument means use current buffer as BUFFER.")
339: (buffer)
340: register Lisp_Object buffer;
341: {
342: if (NULL (buffer))
343: return current_buffer->filename;
344: CHECK_BUFFER (buffer, 0);
345: return XBUFFER (buffer)->filename;
346: }
347:
348: DEFUN ("buffer-local-variables", Fbuffer_local_variables,
349: Sbuffer_local_variables, 0, 1, 0,
350: "Return alist of variables that are buffer-local in BUFFER.\n\
351: No argument means use current buffer as BUFFER.\n\
352: Each element of the value looks like (SYMBOL . VALUE).\n\
353: Note that storing new VALUEs in these elements\n\
354: does not change the local values.")
355: (buffer)
356: register Lisp_Object buffer;
357: {
358: register struct buffer *buf;
359: register Lisp_Object val;
360:
361: if (NULL (buffer))
362: buf = current_buffer;
363: else
364: {
365: CHECK_BUFFER (buffer, 0);
366: buf = XBUFFER (buffer);
367: }
368:
369: {
370: /* Reference each variable in the alist in our current buffer.
371: If inquiring about the current buffer, this gets the current values,
372: so store them into the alist so the alist is up to date.
373: If inquiring about some other buffer, this swaps out any values
374: for that buffer, making the alist up to date automatically. */
375: register Lisp_Object tem;
376: for (tem = buf->local_var_alist; CONSP (tem); tem = XCONS (tem)->cdr)
377: {
378: Lisp_Object v1 = Fsymbol_value (XCONS (XCONS (tem)->car)->car);
379: if (buf == current_buffer)
380: XCONS (XCONS (tem)->car)->cdr = v1;
381: }
382: }
383:
384: /* Make a copy of the alist, to return it. */
385: val = Fcopy_alist (buf->local_var_alist);
386:
387: /* Add on all the variables stored in special slots. */
388: {
389: register int offset, mask;
390:
391: for (offset = (char *)&buffer_local_symbols.name - (char *)&buffer_local_symbols;
392: offset < sizeof (struct buffer);
393: offset += (sizeof (int))) /* sizeof int == sizeof Lisp_Object */
394: {
395: mask = *(int *)(offset + (char *) &buffer_local_flags);
396: if (mask == -1 || (buf->local_var_flags & mask))
397: if (XTYPE (*(Lisp_Object *)(offset + (char *)&buffer_local_symbols))
398: == Lisp_Symbol)
399: val = Fcons (Fcons (*(Lisp_Object *)(offset + (char *)&buffer_local_symbols),
400: *(Lisp_Object *)(offset + (char *)buf)),
401: val);
402: }
403: }
404: return (val);
405: }
406:
407:
408: DEFUN ("buffer-modified-p", Fbuffer_modified_p, Sbuffer_modified_p,
409: 0, 1, 0,
410: "Return t if BUFFER is modified since file last read in or saved.\n\
411: No argument means use current buffer as BUFFER.")
412: (buffer)
413: register Lisp_Object buffer;
414: {
415: register struct buffer *buf;
416: if (NULL (buffer))
417: buf = current_buffer;
418: else
419: {
420: CHECK_BUFFER (buffer, 0);
421: buf = XBUFFER (buffer);
422: }
423:
424: return buf->save_modified < BUF_MODIFF (buf) ? Qt : Qnil;
425: }
426:
427: DEFUN ("set-buffer-modified-p", Fset_buffer_modified_p, Sset_buffer_modified_p,
428: 1, 1, 0,
429: "Mark current buffer as modified or unmodified according to FLAG.")
430: (flag)
431: register Lisp_Object flag;
432: {
433: register int already;
434: register Lisp_Object fn;
435:
436: #ifdef CLASH_DETECTION
437: /* If buffer becoming modified, lock the file.
438: If buffer becoming unmodified, unlock the file. */
439:
440: fn = current_buffer->filename;
441: if (!NULL (fn))
442: {
443: already = current_buffer->save_modified < MODIFF;
444: if (!already && !NULL (flag))
445: lock_file (fn);
446: else if (already && NULL (flag))
447: unlock_file (fn);
448: }
449: #endif /* CLASH_DETECTION */
450:
451: current_buffer->save_modified = NULL (flag) ? MODIFF : 0;
452: update_mode_lines++;
453: return flag;
454: }
455:
456: DEFUN ("rename-buffer", Frename_buffer, Srename_buffer, 1, 1,
457: "sRename buffer (to new name): ",
458: "Change current buffer's name to NEWNAME (a string).")
459: (name)
460: register Lisp_Object name;
461: {
462: register Lisp_Object tem, buf;
463:
464: CHECK_STRING (name, 0);
465: tem = Fget_buffer (name);
466: if (!NULL (tem))
467: error ("Buffer name \"%s\" is in use", XSTRING (name)->data);
468:
469: XSET (buf, Lisp_Buffer, current_buffer);
470: tem = Fmemq (buf, Vminibuffer_list);
471: if (!NULL (tem))
472: error ("Cannot rename a minibuffer");
473:
474: current_buffer->name = name;
475: Fsetcar (Frassq (buf, Vbuffer_alist), name);
476: if (NULL (current_buffer->filename) && !NULL (current_buffer->auto_save_file_name))
477: call0 (intern ("rename-auto-save-file"));
478: return Qnil;
479: }
480:
481: DEFUN ("other-buffer", Fother_buffer, Sother_buffer, 0, 1, 0,
482: "Return most recently selected buffer other than BUFFER.\n\
483: Buffers not visible in windows are preferred to visible buffers.\n\
484: If no other exists, the buffer *scratch* is returned.\n\
485: If BUFFER is omitted or nil, some interesting buffer is returned.")
486: (buffer)
487: register Lisp_Object buffer;
488: {
489: register Lisp_Object tail, buf, notsogood, tem;
490: notsogood = Qnil;
491:
492: for (tail = Vbuffer_alist; !NULL (tail); tail = Fcdr (tail))
493: {
494: buf = Fcdr (Fcar (tail));
495: if (EQ (buf, buffer))
496: continue;
497: if (XSTRING (XBUFFER (buf)->name)->data[0] == ' ')
498: continue;
499: tem = Fget_buffer_window (buf);
500: if (NULL (tem))
501: return buf;
502: if (NULL (notsogood))
503: notsogood = buf;
504: }
505: if (!NULL (notsogood))
506: return notsogood;
507: return Fget_buffer_create (build_string ("*scratch*"));
508: }
509:
510: DEFUN ("buffer-flush-undo", Fbuffer_flush_undo, Sbuffer_flush_undo, 1, 1, 0,
511: "Make BUFFER stop keeping undo information.")
512: (buf)
513: register Lisp_Object buf;
514: {
515: CHECK_BUFFER (buf, 0);
516: XBUFFER (buf)->undo_list = Qt;
517: return Qnil;
518: }
519:
520: DEFUN ("buffer-enable-undo", Fbuffer_enable_undo, Sbuffer_enable_undo,
521: 0, 1, "",
522: "Start keeping undo information for buffer BUFFER (default is current buffer).")
523: (buf)
524: register Lisp_Object buf;
525: {
526: if (NULL (buf))
527: {
528: if (EQ (current_buffer->undo_list, Qt))
529: current_buffer->undo_list = Qnil;
530: }
531: else
532: {
533: CHECK_BUFFER (buf, 0);
534: if (EQ (XBUFFER (buf)->undo_list, Qt))
535: XBUFFER (buf)->undo_list = Qnil;
536: }
537: return Qnil;
538: }
539:
540: DEFUN ("kill-buffer", Fkill_buffer, Skill_buffer, 1, 1, "bKill buffer: ",
541: "One arg, a string or a buffer. Get rid of the specified buffer.\n\
542: Any processes that have this buffer as the `process-buffer' are killed\n\
543: with `delete-process'.")
544: (bufname)
545: Lisp_Object bufname;
546: {
547: Lisp_Object buf;
548: register struct buffer *b;
549: register Lisp_Object tem;
550: register struct Lisp_Marker *m;
551: struct gcpro gcpro1, gcpro2;
552:
553: if (NULL (bufname))
554: buf = Fcurrent_buffer ();
555: else
556: buf = Fget_buffer (bufname);
557: if (NULL (buf))
558: nsberror (bufname);
559:
560: b = XBUFFER (buf);
561:
562: if (FROM_KBD && !NULL (b->filename)
563: && BUF_MODIFF (b) > b->save_modified)
564: {
565: GCPRO2 (buf, bufname);
566: tem = Fyes_or_no_p (format1 ("Buffer %s modified; kill anyway? ",
567: XSTRING (b->name)->data));
568: UNGCPRO;
569: if (NULL (tem))
570: return Qnil;
571: }
572:
573: /* We have no more questions to ask. Verify that it is valid
574: to kill the buffer. This must be done after the questions
575: since anything can happen within Fyes_or_no_p. */
576:
577: /* Don't kill the minibuffer now current. */
578: if (EQ (buf, XWINDOW (minibuf_window)->buffer))
579: return Qnil;
580:
581: if (NULL (b->name))
582: return Qnil;
583:
584: /* Make this buffer not be current.
585: In the process, notice if this is the sole visible buffer
586: and give up if so. */
587: if (b == current_buffer)
588: {
589: tem = Fother_buffer (buf);
590: Fset_buffer (tem);
591: if (b == current_buffer)
592: return Qnil;
593: }
594:
595: /* Now there is no question: we can kill the buffer. */
596:
597: #ifdef CLASH_DETECTION
598: /* Unlock this buffer's file, if it is locked. */
599: unlock_buffer (b);
600: #endif /* CLASH_DETECTION */
601:
602: #ifdef subprocesses
603: kill_buffer_processes (buf);
604: #endif subprocesses
605:
606: tem = Vinhibit_quit;
607: Vinhibit_quit = Qt;
608: Vbuffer_alist = Fdelq (Frassq (buf, Vbuffer_alist), Vbuffer_alist);
609: Freplace_buffer_in_windows (buf);
610: Vinhibit_quit = tem;
611:
612: /* Unchain all markers of this buffer
613: and leave them pointing nowhere. */
614: for (tem = b->markers; !EQ (tem, Qnil); )
615: {
616: m = XMARKER (tem);
617: m->buffer = 0;
618: tem = m->chain;
619: m->chain = Qnil;
620: }
621: b->markers = Qnil;
622:
623: b->name = Qnil;
624: b->undo_list = Qnil;
625: free (BUF_BEG_ADDR (b));
626:
627: return Qnil;
628: }
629:
630: /* Put the element for buffer `buf' at the front of buffer-alist.
631: This is done when a buffer is selected "visibly".
632: It keeps buffer-alist in the order of recency of selection
633: so that other_buffer will return something nice. */
634:
635: record_buffer (buf)
636: Lisp_Object buf;
637: {
638: register Lisp_Object link, prev;
639:
640: prev = Qnil;
641: for (link = Vbuffer_alist; CONSP (link); link = XCONS (link)->cdr)
642: {
643: if (EQ (XCONS (XCONS (link)->car)->cdr, buf))
644: break;
645: prev = link;
646: }
647:
648: /* Effectively do Vbuffer_alist = Fdelq (link, Vbuffer_alist)
649: but cannot use Fdelq here it that allows quitting. */
650:
651: if (NULL (prev))
652: Vbuffer_alist = XCONS (Vbuffer_alist)->cdr;
653: else
654: XCONS (prev)->cdr = XCONS (XCONS (prev)->cdr)->cdr;
655:
656: XCONS(link)->cdr = Vbuffer_alist;
657: Vbuffer_alist = link;
658: }
659:
660: DEFUN ("switch-to-buffer", Fswitch_to_buffer, Sswitch_to_buffer, 1, 2, "BSwitch to buffer: ",
661: "Select buffer BUFFER in the current window.\n\
662: BUFFER may be a buffer or a buffer name.\n\
663: Optional second arg NORECORD non-nil means\n\
664: do not put this buffer at the front of the list of recently selected ones.\n\
665: \n\
666: WARNING: This is NOT the way to work on another buffer temporarily\n\
667: within a Lisp program! Use `set-buffer' instead. That avoids messing with\n\
668: the window-buffer correspondances.")
669: (bufname, norecord)
670: Lisp_Object bufname, norecord;
671: {
672: register Lisp_Object buf;
673:
674: if (EQ (minibuf_window, selected_window))
675: error ("Cannot switch buffers in minibuffer window");
676:
677: if (NULL (bufname))
678: buf = Fother_buffer (Fcurrent_buffer ());
679: else
680: buf = Fget_buffer_create (bufname);
681: Fset_buffer (buf);
682: if (NULL (norecord))
683: record_buffer (buf);
684:
685: Fset_window_buffer (EQ (selected_window, minibuf_window)
686: ? Fnext_window (minibuf_window, Qnil) : selected_window,
687: buf);
688:
689: return Qnil;
690: }
691:
692: DEFUN ("pop-to-buffer", Fpop_to_buffer, Spop_to_buffer, 1, 2, 0,
693: "Select buffer BUFFER in some window, preferably a different one.\n\
694: If pop-up-windows is non-nil, windows can be split to do this.\n\
695: If second arg OTHER-WINDOW is non-nil, insist on finding another\n\
696: window even if BUFFER is already visible in the selected window.")
697: (bufname, other)
698: Lisp_Object bufname, other;
699: {
700: register Lisp_Object buf;
701: if (NULL (bufname))
702: buf = Fother_buffer (Fcurrent_buffer ());
703: else
704: buf = Fget_buffer_create (bufname);
705: Fset_buffer (buf);
706: record_buffer (buf);
707: Fselect_window (Fdisplay_buffer (buf, other));
708: return Qnil;
709: }
710:
711: DEFUN ("current-buffer", Fcurrent_buffer, Scurrent_buffer, 0, 0, 0,
712: "Return the current buffer as a Lisp buffer object.")
713: ()
714: {
715: register Lisp_Object buf;
716: XSET (buf, Lisp_Buffer, current_buffer);
717: return buf;
718: }
719:
720: DEFUN ("set-buffer", Fset_buffer, Sset_buffer, 1, 1, 0,
721: "Set the current buffer to the buffer or buffer name supplied as argument.\n\
722: That buffer will then be the default for editing operations and printing.\n\
723: This function's effect can't last past end of current command\n\
724: because returning to command level\n\
725: selects the chosen buffer of the current window,\n\
726: and this function has no effect on what buffer that is.\n\
727: See also `save-excursion' when you want to select a buffer temporarily.\n\
728: Use `switch-to-buffer' or `pop-to-buffer' for interactive buffer selection.")
729: (bufname)
730: register Lisp_Object bufname;
731: {
732: register Lisp_Object buffer;
733: buffer = Fget_buffer (bufname);
734: if (NULL (buffer))
735: nsberror (bufname);
736: if (NULL (XBUFFER (buffer)->name))
737: error ("Selecting deleted buffer");
738: set_buffer_internal (XBUFFER (buffer));
739: return buffer;
740: }
741:
742: DEFUN ("barf-if-buffer-read-only", Fbarf_if_buffer_read_only,
743: Sbarf_if_buffer_read_only, 0, 0, 0,
744: "Signal a buffer-read-only error if the current buffer is read-only.")
745: ()
746: {
747: while (!NULL (current_buffer->read_only))
748: Fsignal (Qbuffer_read_only, (Fcons (Fcurrent_buffer (), Qnil)));
749: return Qnil;
750: }
751:
752: DEFUN ("bury-buffer", Fbury_buffer, Sbury_buffer, 0, 1, "",
753: "Put BUFFER at the end of the list of all buffers.\n\
754: There it is the least likely candidate for other-buffer to return;\n\
755: thus, the least likely buffer for \\[switch-to-buffer] to select by default.\n\
756: BUFFER is also removed from the selected window if it was displayed there.")
757: (buf)
758: register Lisp_Object buf;
759: {
760: register Lisp_Object aelt, link;
761:
762: if (NULL (buf))
763: {
764: XSET (buf, Lisp_Buffer, current_buffer);
765: Fswitch_to_buffer (Fother_buffer (buf), Qnil);
766: }
767: else
768: {
769: Lisp_Object buf1;
770:
771: buf1 = Fget_buffer (buf);
772: if (NULL (buf1))
773: nsberror (buf);
774: buf = buf1;
775: }
776:
777: aelt = Frassq (buf, Vbuffer_alist);
778: link = Fmemq (aelt, Vbuffer_alist);
779: Vbuffer_alist = Fdelq (aelt, Vbuffer_alist);
780: XCONS (link)->cdr = Qnil;
781: Vbuffer_alist = nconc2 (Vbuffer_alist, link);
782: return Qnil;
783: }
784:
785: extern int last_known_column_point;
786:
787: /* Set the current buffer to B, which is a C pointer,
788: rather than a Lisp object. */
789:
790: set_buffer_internal (b)
791: register struct buffer *b;
792: {
793: register struct buffer *swb = 0;
794: register struct buffer *old_buf;
795: register Lisp_Object tail, valcontents;
796: enum Lisp_Type tem;
797:
798: if (current_buffer == b)
799: return;
800:
801: #if 0
802: if (XWINDOW (selected_window) != 0)
803: swb = NULL (selected_window) ? 0 : XBUFFER (XWINDOW (selected_window)->buffer);
804: #endif
805:
806: windows_or_buffers_changed = 1;
807:
808: /* Vcheck_symbol is set up to the symbol paragraph-start
809: in order to check for the bug that clobbers it. */
810: /* if (current_buffer && EQ (current_buffer->major_mode, Qlisp_mode)
811: && XFASTINT (Vcheck_symbol) != 0
812: && !NULL (Vcheck_symbol))
813: {
814: valcontents = XSYMBOL (Vcheck_symbol)->value;
815: if (XTYPE (valcontents) != Lisp_Some_Buffer_Local_Value)
816: abort ();
817: if (current_buffer == XBUFFER (XCONS (XCONS (valcontents)->cdr)->car)
818: && (XTYPE (XCONS (valcontents)->car) != Lisp_String
819: || XSTRING (XCONS (valcontents)->car)->size != 6))
820: abort ();
821: }
822: */
823:
824: #if 0
825: if (current_buffer == swb && !NULL (selected_window))
826: Fset_marker (XWINDOW (selected_window)->pointm, make_number (point),
827: XWINDOW (selected_window)->buffer);
828: #endif
829: old_buf = current_buffer;
830: current_buffer = b;
831: #if 0
832: if (b == swb)
833: {
834: SET_PT (marker_position (XWINDOW (selected_window)->pointm));
835: if (point < BEGV)
836: point = BEGV;
837: if (point > ZV)
838: point = ZV;
839: }
840: #endif
841: last_known_column_point = -1; /* invalidate indentation cache */
842:
843: /* Look down buffer's list of local Lisp variables
844: to find and update any that forward into C variables. */
845:
846: for (tail = b->local_var_alist; !NULL (tail); tail = XCONS (tail)->cdr)
847: {
848: valcontents = XSYMBOL (XCONS (XCONS (tail)->car)->car)->value;
849: if ((XTYPE (valcontents) == Lisp_Buffer_Local_Value
850: || XTYPE (valcontents) == Lisp_Some_Buffer_Local_Value)
851: && (tem = XTYPE (XCONS (valcontents)->car),
852: (tem == Lisp_Boolfwd || tem == Lisp_Intfwd
853: || tem == Lisp_Objfwd)))
854: /* Just reference the variable
855: to cause it to become set for this buffer. */
856: Fsymbol_value (XCONS (XCONS (tail)->car)->car);
857: }
858:
859: /* Do the same with any others that were local to the previous buffer */
860:
861: if (old_buf)
862: for (tail = old_buf->local_var_alist; !NULL (tail); tail = XCONS (tail)->cdr)
863: {
864: valcontents = XSYMBOL (XCONS (XCONS (tail)->car)->car)->value;
865: if ((XTYPE (valcontents) == Lisp_Buffer_Local_Value
866: || XTYPE (valcontents) == Lisp_Some_Buffer_Local_Value)
867: && (tem = XTYPE (XCONS (valcontents)->car),
868: (tem == Lisp_Boolfwd || tem == Lisp_Intfwd
869: || tem == Lisp_Objfwd)))
870: /* Just reference the variable
871: to cause it to become set for this buffer. */
872: Fsymbol_value (XCONS (XCONS (tail)->car)->car);
873: }
874: /* Vcheck_symbol is set up to the symbol paragraph-start
875: in order to check for the bug that clobbers it. */
876: /*if (EQ (b->major_mode, Qlisp_mode)
877: && Vcheck_symbol
878: && !NULL (Vcheck_symbol))
879: {
880: valcontents = XSYMBOL (Vcheck_symbol)->value;
881: if (XTYPE (valcontents) != Lisp_Some_Buffer_Local_Value)
882: abort ();
883: if (b == XBUFFER (XCONS (XCONS (valcontents)->cdr)->car)
884: && (XTYPE (XCONS (valcontents)->car) != Lisp_String
885: || XSTRING (XCONS (valcontents)->car)->size != 6))
886: abort ();
887: Fsymbol_value (Vcheck_symbol);
888: valcontents = XSYMBOL (Vcheck_symbol)->value;
889: if (b != XBUFFER (XCONS (XCONS (valcontents)->cdr)->car)
890: || XTYPE (XCONS (valcontents)->car) != Lisp_String
891: || XSTRING (XCONS (valcontents)->car)->size != 6)
892: abort ();
893: }
894: */
895: }
896:
897: DEFUN ("erase-buffer", Ferase_buffer, Serase_buffer, 0, 0, 0,
898: "Delete the entire contents of the current buffer.")
899: ()
900: {
901: Fwiden ();
902: del_range (BEG, Z);
903: current_buffer->last_window_start = 1;
904: /* Prevent warnings, or suspension of auto saving, that would happen
905: if future size is less than past size. Use of erase-buffer
906: implies that the future text is not really related to the past text. */
907: XFASTINT (current_buffer->save_length) = 0;
908: return Qnil;
909: }
910:
911: validate_region (b, e)
912: register Lisp_Object *b, *e;
913: {
914: register int i;
915:
916: CHECK_NUMBER_COERCE_MARKER (*b, 0);
917: CHECK_NUMBER_COERCE_MARKER (*e, 1);
918:
919: if (XINT (*b) > XINT (*e))
920: {
921: i = XFASTINT (*b); /* This is legit even if *b is < 0 */
922: *b = *e;
923: XFASTINT (*e) = i; /* because this is all we do with i. */
924: }
925:
926: if (!(BEGV <= XINT (*b) && XINT (*b) <= XINT (*e)
927: && XINT (*e) <= ZV))
928: args_out_of_range (*b, *e);
929: }
930:
931: Lisp_Object
932: list_buffers_1 (files)
933: Lisp_Object files;
934: {
935: register Lisp_Object tail, tem, buf;
936: Lisp_Object col1, col2, col3, minspace;
937: register struct buffer *old = current_buffer, *b;
938: int desired_point = 0;
939:
940: XFASTINT (col1) = 19;
941: XFASTINT (col2) = 25;
942: XFASTINT (col3) = 40;
943: XFASTINT (minspace) = 1;
944:
945: Fset_buffer (Vstandard_output);
946:
947: tail = intern ("Buffer-menu-mode");
948: if (!EQ (tail, current_buffer->major_mode)
949: && (tem = Ffboundp (tail), !NULL (tem)))
950: call0 (tail);
951: Fbuffer_flush_undo (Vstandard_output);
952: current_buffer->read_only = Qnil;
953:
954: write_string ("\
955: MR Buffer Size Mode File\n\
956: -- ------ ---- ---- ----\n", -1);
957:
958: for (tail = Vbuffer_alist; !NULL (tail); tail = Fcdr (tail))
959: {
960: buf = Fcdr (Fcar (tail));
961: b = XBUFFER (buf);
962: /* Don't mention the minibuffers. */
963: if (XSTRING (b->name)->data[0] == ' ')
964: continue;
965: /* Optionally don't mention buffers that lack files. */
966: if (!NULL (files) && NULL (b->filename))
967: continue;
968: /* Identify the current buffer. */
969: if (b == old)
970: desired_point = point;
971: write_string (b == old ? "." : " ", -1);
972: /* Identify modified buffers */
973: write_string (BUF_MODIFF (b) > b->save_modified ? "*" : " ", -1);
974: write_string (NULL (b->read_only) ? " " : "% ", -1);
975: Fprinc (b->name, Qnil);
976: Findent_to (col1, make_number (2));
977: XFASTINT (tem) = BUF_Z (b) - BUF_BEG (b);
978: Fprin1 (tem, Qnil);
979: Findent_to (col2, minspace);
980: Fprinc (b->mode_name, Qnil);
981: Findent_to (col3, minspace);
982: if (!NULL (b->filename))
983: Fprinc (b->filename, Qnil);
984: write_string ("\n", -1);
985: }
986:
987: current_buffer->read_only = Qt;
988: set_buffer_internal (old);
989: /* Foo. This doesn't work since temp_output_buffer_show sets point to 1
990: if (desired_point)
991: BUF_PT (XBUFFER (Vstandard_output)) = desired_point;
992: */
993: return Qnil;
994: }
995:
996: DEFUN ("list-buffers", Flist_buffers, Slist_buffers, 0, 1, "P",
997: "Display a list of names of existing buffers.\n\
998: Inserts it in buffer *Buffer List* and displays that.\n\
999: Note that buffers with names starting with spaces are omitted.\n\
1000: Non-null optional arg FILES-ONLY means mention only file buffers.\n\
1001: \n\
1002: The M column contains a * for buffers that are modified.\n\
1003: The R column contains a % for buffers that are read-only.")
1004: (files)
1005: Lisp_Object files;
1006: {
1007: internal_with_output_to_temp_buffer ("*Buffer List*",
1008: list_buffers_1, files);
1009: return Qnil;
1010: }
1011:
1012: DEFUN ("kill-all-local-variables", Fkill_all_local_variables, Skill_all_local_variables,
1013: 0, 0, 0,
1014: "Eliminate all the buffer-local variable values of the current buffer.\n\
1015: This buffer will then see the default values of all variables.")
1016: ()
1017: {
1018: register Lisp_Object alist, sym, tem;
1019:
1020: for (alist = current_buffer->local_var_alist; !NULL (alist); alist = XCONS (alist)->cdr)
1021: {
1022: sym = XCONS (XCONS (alist)->car)->car;
1023:
1024: /* Need not do anything if some other buffer's binding is now encached. */
1025: tem = XCONS (XCONS (XSYMBOL (sym)->value)->cdr)->car;
1026: if (XBUFFER (tem) == current_buffer)
1027: {
1028: /* Symbol is set up for this buffer's old local value.
1029: Set it up for the current buffer with the default value. */
1030:
1031: tem = XCONS (XCONS (XSYMBOL (sym)->value)->cdr)->cdr;
1032: XCONS (tem)->car = tem;
1033: XCONS (XCONS (XSYMBOL (sym)->value)->cdr)->car = Fcurrent_buffer ();
1034: store_symval_forwarding (sym, XCONS (XSYMBOL (sym)->value)->car,
1035: XCONS (tem)->cdr);
1036: }
1037: }
1038:
1039: reset_buffer_local_variables (current_buffer);
1040: return Qnil;
1041: }
1042:
1043: extern Lisp_Object Vprin1_to_string_buffer; /* in print.c */
1044: init_buffer_once ()
1045: {
1046: register Lisp_Object tem;
1047:
1048: /* Make sure all markable slots in buffer_defaults
1049: are initialized reasonably, so mark_buffer won't choke. */
1050: reset_buffer (&buffer_defaults);
1051: reset_buffer (&buffer_local_symbols);
1052: XSET (Vbuffer_defaults, Lisp_Buffer, &buffer_defaults);
1053: XSET (Vbuffer_local_symbols, Lisp_Buffer, &buffer_local_symbols);
1054:
1055: /* Set up the default values of various buffer slots. */
1056: /* Must do these before making the first buffer! */
1057:
1058: /* real setup is done in loaddefs.el */
1059: buffer_defaults.mode_line_format = build_string ("%-");
1060: buffer_defaults.abbrev_mode = Qnil;
1061: buffer_defaults.overwrite_mode = Qnil;
1062: buffer_defaults.case_fold_search = Qt;
1063: buffer_defaults.auto_fill_hook = Qnil;
1064: buffer_defaults.selective_display = Qnil;
1065: buffer_defaults.selective_display_ellipses = Qt;
1066: buffer_defaults.abbrev_table = Qnil;
1067: buffer_defaults.undo_list = Qnil;
1068:
1069: XFASTINT (buffer_defaults.tab_width) = 8;
1070: buffer_defaults.truncate_lines = Qnil;
1071: buffer_defaults.ctl_arrow = Qt;
1072:
1073: XFASTINT (buffer_defaults.fill_column) = 70;
1074: XFASTINT (buffer_defaults.left_margin) = 0;
1075:
1076: /* Assign the local-flags to the slots that have default values.
1077: The local flag is a bit that is used in the buffer
1078: to say that it has its own local value for the slot.
1079: The local flag bits are in the local_var_flags slot of the buffer. */
1080:
1081: /* Nothing can work if this isn't true */
1082: if (sizeof (int) != sizeof (Lisp_Object)) abort ();
1083:
1084: /* 0 means not a lisp var, -1 means always local, else mask */
1085: bzero (&buffer_local_flags, sizeof buffer_local_flags);
1086: XFASTINT (buffer_local_flags.filename) = -1;
1087: XFASTINT (buffer_local_flags.directory) = -1;
1088: XFASTINT (buffer_local_flags.backed_up) = -1;
1089: XFASTINT (buffer_local_flags.save_length) = -1;
1090: XFASTINT (buffer_local_flags.auto_save_file_name) = -1;
1091: XFASTINT (buffer_local_flags.read_only) = -1;
1092: XFASTINT (buffer_local_flags.major_mode) = -1;
1093: XFASTINT (buffer_local_flags.mode_name) = -1;
1094: XFASTINT (buffer_local_flags.undo_list) = -1;
1095:
1096: XFASTINT (buffer_local_flags.mode_line_format) = 1;
1097: XFASTINT (buffer_local_flags.abbrev_mode) = 2;
1098: XFASTINT (buffer_local_flags.overwrite_mode) = 4;
1099: XFASTINT (buffer_local_flags.case_fold_search) = 8;
1100: XFASTINT (buffer_local_flags.auto_fill_hook) = 0x10;
1101: XFASTINT (buffer_local_flags.selective_display) = 0x20;
1102: XFASTINT (buffer_local_flags.selective_display_ellipses) = 0x40;
1103: XFASTINT (buffer_local_flags.tab_width) = 0x80;
1104: XFASTINT (buffer_local_flags.truncate_lines) = 0x100;
1105: XFASTINT (buffer_local_flags.ctl_arrow) = 0x200;
1106: XFASTINT (buffer_local_flags.fill_column) = 0x400;
1107: XFASTINT (buffer_local_flags.left_margin) = 0x800;
1108: XFASTINT (buffer_local_flags.abbrev_table) = 0x1000;
1109: XFASTINT (buffer_local_flags.syntax_table) = 0x2000;
1110:
1111: Vbuffer_alist = Qnil;
1112: current_buffer = 0;
1113: all_buffers = 0;
1114:
1115: QSFundamental = build_string ("Fundamental");
1116:
1117: Qfundamental_mode = intern ("fundamental-mode");
1118: buffer_defaults.major_mode = Qfundamental_mode;
1119:
1120: Qmode_class = intern ("mode-class");
1121:
1122: Vprin1_to_string_buffer = Fget_buffer_create (build_string (" prin1"));
1123: /* super-magic invisible buffer */
1124: Vbuffer_alist = Qnil;
1125:
1126: Fset_buffer (Fget_buffer_create (build_string ("*scratch*")));
1127: }
1128:
1129: init_buffer ()
1130: {
1131: char buf[MAXPATHLEN+1];
1132:
1133: Fset_buffer (Fget_buffer_create (build_string ("*scratch*")));
1134: if (getwd (buf) == 0)
1135: fatal ("`getwd' failed: %s.\n", buf);
1136:
1137: #ifndef VMS
1138: /* Maybe this should really use some standard subroutine
1139: whose definition is filename syntax dependent. */
1140: if (buf[strlen (buf) - 1] != '/')
1141: strcat (buf, "/");
1142: #endif /* not VMS */
1143: current_buffer->directory = build_string (buf);
1144: }
1145:
1146: /* initialize the buffer routines */
1147: syms_of_buffer ()
1148: {
1149: staticpro (&Vbuffer_defaults);
1150: staticpro (&Vbuffer_local_symbols);
1151: staticpro (&Qfundamental_mode);
1152: staticpro (&Qmode_class);
1153: staticpro (&QSFundamental);
1154: staticpro (&Vbuffer_alist);
1155:
1156: /*staticpro (&Qlisp_mode);
1157: Qlisp_mode = intern ("lisp-mode");
1158: */
1159:
1160: /* All these use DEFVAR_LISP_NOPRO because the slots in
1161: buffer_defaults will all be marked via Vbuffer_defaults. */
1162:
1163: DEFVAR_LISP_NOPRO ("default-mode-line-format",
1164: &buffer_defaults.mode_line_format,
1165: "Default mode-line-format for buffers that do not override it.\n\
1166: This is the same as (default-value 'mode-line-format).");
1167:
1168: DEFVAR_LISP_NOPRO ("default-abbrev-mode",
1169: &buffer_defaults.abbrev_mode,
1170: "Default abbrev-mode for buffers that do not override it.\n\
1171: This is the same as (default-value 'abbrev-mode).");
1172:
1173: DEFVAR_LISP_NOPRO ("default-ctl-arrow",
1174: &buffer_defaults.ctl_arrow,
1175: "Default ctl-arrow for buffers that do not override it.\n\
1176: This is the same as (default-value 'ctl-arrow).");
1177:
1178: DEFVAR_LISP_NOPRO ("default-truncate-lines",
1179: &buffer_defaults.truncate_lines,
1180: "Default truncate-lines for buffers that do not override it.\n\
1181: This is the same as (default-value 'truncate-lines).");
1182:
1183: DEFVAR_LISP_NOPRO ("default-fill-column",
1184: &buffer_defaults.fill_column,
1185: "Default fill-column for buffers that do not override it.\n\
1186: This is the same as (default-value 'fill-column).");
1187:
1188: DEFVAR_LISP_NOPRO ("default-left-margin",
1189: &buffer_defaults.left_margin,
1190: "Default left-margin for buffers that do not override it.\n\
1191: This is the same as (default-value 'left-margin).");
1192:
1193: DEFVAR_LISP_NOPRO ("default-tab-width",
1194: &buffer_defaults.tab_width,
1195: "Default tab-width for buffers that do not override it.\n\
1196: This is the same as (default-value 'tab-width).");
1197:
1198: DEFVAR_LISP_NOPRO ("default-case-fold-search",
1199: &buffer_defaults.case_fold_search,
1200: "Default case-fold-search for buffers that do not override it.\n\
1201: This is the same as (default-value 'case-fold-search).");
1202:
1203: DEFVAR_PER_BUFFER ("mode-line-format", ¤t_buffer->mode_line_format, 0);
1204:
1205: /* This doc string is too long for cpp; cpp dies.
1206: DEFVAR_PER_BUFFER ("mode-line-format", ¤t_buffer->mode_line_format,
1207: "Template for displaying mode line for current buffer.\n\
1208: Each buffer has its own value of this variable.\n\
1209: Value may be a string, a symbol or a list or cons cell.\n\
1210: For a symbol, its value is used (but it is ignored if t or nil).\n\
1211: A string appearing directly as the value of a symbol is processed verbatim\n\
1212: in that the %-constructs below are not recognized.\n\
1213: For a list whose car is a symbol, the symbol's value is taken,\n\
1214: and if that is non-nil, the cadr of the list is processed recursively.\n\
1215: Otherwise, the caddr of the list (if there is one) is processed.\n\
1216: For a list whose car is a string or list, each element is processed\n\
1217: recursively and the results are effectively concatenated.\n\
1218: For a list whose car is an integer, the cdr of the list is processed\n\
1219: and padded (if the number is positive) or truncated (if negative)\n\
1220: to the width specified by that number.\n\
1221: A string is printed verbatim in the mode line except for %-constructs:\n\
1222: (%-constructs are allowed when the string is the entire mode-line-format\n\
1223: or when it is found in a cons-cell or a list)\n\
1224: %b -- print buffer name. %f -- print visited file name.\n\
1225: %* -- print *, % or hyphen. %m -- print value of mode-name (obsolete).\n\
1226: %s -- print process status. %M -- print value of global-mode-string. (obs)\n\
1227: %p -- print percent of buffer above top of window, or top, bot or all.\n\
1228: %n -- print Narrow if appropriate.\n\
1229: %[ -- print one [ for each recursive editing level. %] similar.\n\
1230: %% -- print %. %- -- print infinitely many dashes.\n\
1231: Decimal digits after the % specify field width to which to pad.");
1232: */
1233:
1234: DEFVAR_LISP_NOPRO ("default-major-mode", &buffer_defaults.major_mode,
1235: "*Major mode for new buffers. Defaults to fundamental-mode.\n\
1236: nil here means use current buffer's major mode.");
1237:
1238: DEFVAR_PER_BUFFER ("major-mode", ¤t_buffer->major_mode,
1239: "Symbol for current buffer's major mode.");
1240:
1241: DEFVAR_PER_BUFFER ("abbrev-mode", ¤t_buffer->abbrev_mode,
1242: "Non-nil turns on automatic expansion of abbrevs when inserted.\n\
1243: Automatically becomes local when set in any fashion.");
1244:
1245: DEFVAR_PER_BUFFER ("case-fold-search", ¤t_buffer->case_fold_search,
1246: "*Non-nil if searches should ignore case.\n\
1247: Automatically becomes local when set in any fashion.");
1248:
1249: DEFVAR_PER_BUFFER ("mode-name", ¤t_buffer->mode_name,
1250: "Pretty name of current buffer's major mode (a string).");
1251:
1252: DEFVAR_PER_BUFFER ("fill-column", ¤t_buffer->fill_column,
1253: "*Column beyond which automatic line-wrapping should happen.\n\
1254: Automatically becomes local when set in any fashion.");
1255:
1256: DEFVAR_PER_BUFFER ("left-margin", ¤t_buffer->left_margin,
1257: "*Column for the default indent-line-function to indent to.\n\
1258: Linefeed indents to this column in Fundamental mode.\n\
1259: Automatically becomes local when set in any fashion.");
1260:
1261: DEFVAR_PER_BUFFER ("tab-width", ¤t_buffer->tab_width,
1262: "*Distance between tab stops (for display of tab characters), in columns.\n\
1263: Automatically becomes local when set in any fashion.");
1264:
1265: DEFVAR_PER_BUFFER ("ctl-arrow", ¤t_buffer->ctl_arrow,
1266: "*Non-nil means display control chars with uparrow.\n\
1267: Nil means use backslash and octal digits.\n\
1268: Automatically becomes local when set in any fashion.");
1269:
1270: DEFVAR_PER_BUFFER ("truncate-lines", ¤t_buffer->truncate_lines,
1271: "*Non-nil means do not display continuation lines;\n\
1272: give each line of text one screen line.\n\
1273: Automatically becomes local when set in any fashion.\n\
1274: \n\
1275: Note that this is overridden by the variable\n\
1276: truncate-partial-width-windows if that variable is non-nil\n\
1277: and this buffer is not full-screen width.");
1278:
1279: DEFVAR_PER_BUFFER ("default-directory", ¤t_buffer->directory,
1280: "Name of default directory of current buffer. Should end with slash.");
1281:
1282: DEFVAR_PER_BUFFER ("auto-fill-hook", ¤t_buffer->auto_fill_hook,
1283: "Function called (if non-nil) after self-inserting a space at column beyond fill-column");
1284:
1285: DEFVAR_PER_BUFFER ("buffer-file-name", ¤t_buffer->filename,
1286: "Name of file visited in current buffer, or nil if not visiting a file.");
1287:
1288: DEFVAR_PER_BUFFER ("buffer-auto-save-file-name",
1289: ¤t_buffer->auto_save_file_name,
1290: "Name of file for auto-saving current buffer,\n\
1291: or nil if buffer should not be auto-saved.");
1292:
1293: DEFVAR_PER_BUFFER ("buffer-read-only", ¤t_buffer->read_only,
1294: "Non-nil if this buffer is read-only.");
1295:
1296: DEFVAR_PER_BUFFER ("buffer-backed-up", ¤t_buffer->backed_up,
1297: "Non-nil if this buffer's file has been backed up.\n\
1298: Backing up is done before the first time the file is saved.");
1299:
1300: DEFVAR_PER_BUFFER ("buffer-saved-size", ¤t_buffer->save_length,
1301: "Length of current buffer when last read in, saved or auto-saved.\n\
1302: 0 initially.");
1303:
1304: DEFVAR_PER_BUFFER ("selective-display", ¤t_buffer->selective_display,
1305: "t enables selective display:\n\
1306: after a ^M, all the rest of the line is invisible.\n\
1307: ^M's in the file are written into files as newlines.\n\
1308: Integer n as value means display only lines\n\
1309: that start with less than n columns of space.\n\
1310: Automatically becomes local when set in any fashion.");
1311:
1312: DEFVAR_PER_BUFFER ("selective-display-ellipses",
1313: ¤t_buffer->selective_display_ellipses,
1314: "t means display ... on previous line when a line is invisible.\n\
1315: Automatically becomes local when set in any fashion.");
1316:
1317: DEFVAR_PER_BUFFER ("overwrite-mode", ¤t_buffer->overwrite_mode,
1318: "Non-nil if self-insertion should replace existing text.\n\
1319: Automatically becomes local when set in any fashion.");
1320:
1321: DEFVAR_PER_BUFFER ("buffer-undo-list", ¤t_buffer->undo_list,
1322: "List of undo entries in current buffer.");
1323:
1324: /*DEFVAR_LISP ("debug-check-symbol", &Vcheck_symbol,
1325: "Don't ask.");
1326: */
1327: defsubr (&Sbuffer_list);
1328: defsubr (&Sget_buffer);
1329: defsubr (&Sget_file_buffer);
1330: defsubr (&Sget_buffer_create);
1331: defsubr (&Sgenerate_new_buffer);
1332: defsubr (&Sbuffer_name);
1333: /*defsubr (&Sbuffer_number);*/
1334: defsubr (&Sbuffer_file_name);
1335: defsubr (&Sbuffer_local_variables);
1336: defsubr (&Sbuffer_modified_p);
1337: defsubr (&Sset_buffer_modified_p);
1338: defsubr (&Srename_buffer);
1339: defsubr (&Sother_buffer);
1340: defsubr (&Sbuffer_flush_undo);
1341: defsubr (&Sbuffer_enable_undo);
1342: defsubr (&Skill_buffer);
1343: defsubr (&Serase_buffer);
1344: defsubr (&Sswitch_to_buffer);
1345: defsubr (&Spop_to_buffer);
1346: defsubr (&Scurrent_buffer);
1347: defsubr (&Sset_buffer);
1348: defsubr (&Sbarf_if_buffer_read_only);
1349: defsubr (&Sbury_buffer);
1350: defsubr (&Slist_buffers);
1351: defsubr (&Skill_all_local_variables);
1352: }
1353:
1354: keys_of_buffer ()
1355: {
1356: ndefkey (Vctl_x_map, 'b', "switch-to-buffer");
1357: ndefkey (Vctl_x_map, 'k', "kill-buffer");
1358: ndefkey (Vctl_x_map, Ctl ('B'), "list-buffers");
1359: }
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