428
+ − 1 /* Lisp functions pertaining to editing.
+ − 2 Copyright (C) 1985-1987, 1989, 1992-1995 Free Software Foundation, Inc.
+ − 3 Copyright (C) 1995 Tinker Systems and INS Engineering Corp.
+ − 4 Copyright (C) 1996 Ben Wing.
+ − 5
+ − 6 This file is part of XEmacs.
+ − 7
+ − 8 XEmacs is free software; you can redistribute it and/or modify it
+ − 9 under the terms of the GNU General Public License as published by the
+ − 10 Free Software Foundation; either version 2, or (at your option) any
+ − 11 later version.
+ − 12
+ − 13 XEmacs is distributed in the hope that it will be useful, but WITHOUT
+ − 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ − 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ − 16 for more details.
+ − 17
+ − 18 You should have received a copy of the GNU General Public License
+ − 19 along with XEmacs; see the file COPYING. If not, write to
+ − 20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ − 21 Boston, MA 02111-1307, USA. */
+ − 22
+ − 23 /* Synched up with: Mule 2.0, FSF 19.30. */
+ − 24
+ − 25 /* This file has been Mule-ized. */
+ − 26
+ − 27 /* Hacked on for Mule by Ben Wing, December 1994. */
+ − 28
+ − 29 #include <config.h>
+ − 30 #include "lisp.h"
+ − 31
+ − 32 #include "buffer.h"
+ − 33 #include "commands.h"
+ − 34 #include "events.h" /* for EVENTP */
+ − 35 #include "extents.h"
+ − 36 #include "frame.h"
+ − 37 #include "insdel.h"
+ − 38 #include "window.h"
446
+ − 39 #include "casetab.h"
428
+ − 40 #include "chartab.h"
+ − 41 #include "line-number.h"
+ − 42
+ − 43 #include "systime.h"
+ − 44 #include "sysdep.h"
+ − 45 #include "syspwd.h"
+ − 46 #include "sysfile.h" /* for getcwd */
+ − 47
+ − 48 /* Some static data, and a function to initialize it for each run */
+ − 49
+ − 50 Lisp_Object Vsystem_name; /* #### - I don't see why this should be */
+ − 51 /* static, either... --Stig */
+ − 52 #if 0 /* XEmacs - this is now dynamic */
+ − 53 /* if at some point it's deemed desirable to
+ − 54 use lisp variables here, then they can be
+ − 55 initialized to nil and then set to their
+ − 56 real values upon the first call to the
+ − 57 functions that generate them. --stig */
+ − 58 Lisp_Object Vuser_real_login_name; /* login name of current user ID */
+ − 59 Lisp_Object Vuser_login_name; /* user name from LOGNAME or USER. */
+ − 60 #endif
+ − 61
+ − 62 /* It's useful to be able to set this as user customization, so we'll
+ − 63 keep it. */
+ − 64 Lisp_Object Vuser_full_name;
+ − 65 EXFUN (Fuser_full_name, 1);
+ − 66
+ − 67 Lisp_Object Qformat;
+ − 68
+ − 69 Lisp_Object Qpoint, Qmark, Qregion_beginning, Qregion_end;
+ − 70
+ − 71 Lisp_Object Quser_files_and_directories;
+ − 72
+ − 73 /* This holds the value of `environ' produced by the previous
+ − 74 call to Fset_time_zone_rule, or 0 if Fset_time_zone_rule
+ − 75 has never been called. */
+ − 76 static char **environbuf;
+ − 77
+ − 78 void
+ − 79 init_editfns (void)
+ − 80 {
+ − 81 /* Only used in removed code below. */
+ − 82 char *p;
+ − 83
+ − 84 environbuf = 0;
+ − 85
+ − 86 /* Set up system_name even when dumping. */
+ − 87 init_system_name ();
+ − 88
+ − 89 #ifndef CANNOT_DUMP
+ − 90 if (!initialized)
+ − 91 return;
+ − 92 #endif
+ − 93
+ − 94 if ((p = getenv ("NAME")))
+ − 95 /* I don't think it's the right thing to do the ampersand
+ − 96 modification on NAME. Not that it matters anymore... -hniksic */
440
+ − 97 Vuser_full_name = build_ext_string (p, Qnative);
428
+ − 98 else
+ − 99 Vuser_full_name = Fuser_full_name (Qnil);
+ − 100 }
+ − 101
+ − 102 DEFUN ("char-to-string", Fchar_to_string, 1, 1, 0, /*
444
+ − 103 Convert CHARACTER to a one-character string containing that character.
428
+ − 104 */
444
+ − 105 (character))
428
+ − 106 {
+ − 107 Bytecount len;
+ − 108 Bufbyte str[MAX_EMCHAR_LEN];
+ − 109
444
+ − 110 if (EVENTP (character))
428
+ − 111 {
444
+ − 112 Lisp_Object ch2 = Fevent_to_character (character, Qt, Qnil, Qnil);
428
+ − 113 if (NILP (ch2))
563
+ − 114 invalid_argument
+ − 115 ("character has no ASCII equivalent:", Fcopy_event (character, Qnil));
444
+ − 116 character = ch2;
428
+ − 117 }
+ − 118
444
+ − 119 CHECK_CHAR_COERCE_INT (character);
428
+ − 120
444
+ − 121 len = set_charptr_emchar (str, XCHAR (character));
428
+ − 122 return make_string (str, len);
+ − 123 }
+ − 124
+ − 125 DEFUN ("string-to-char", Fstring_to_char, 1, 1, 0, /*
+ − 126 Convert arg STRING to a character, the first character of that string.
+ − 127 An empty string will return the constant `nil'.
+ − 128 */
444
+ − 129 (string))
428
+ − 130 {
440
+ − 131 Lisp_String *p;
444
+ − 132 CHECK_STRING (string);
428
+ − 133
444
+ − 134 p = XSTRING (string);
428
+ − 135 if (string_length (p) != 0)
+ − 136 return make_char (string_char (p, 0));
+ − 137 else
+ − 138 /* This used to return Qzero. That is broken, broken, broken. */
+ − 139 /* It might be kinder to signal an error directly. -slb */
+ − 140 return Qnil;
+ − 141 }
+ − 142
+ − 143
+ − 144 static Lisp_Object
+ − 145 buildmark (Bufpos val, Lisp_Object buffer)
+ − 146 {
+ − 147 Lisp_Object mark = Fmake_marker ();
+ − 148 Fset_marker (mark, make_int (val), buffer);
+ − 149 return mark;
+ − 150 }
+ − 151
+ − 152 DEFUN ("point", Fpoint, 0, 1, 0, /*
+ − 153 Return value of point, as an integer.
+ − 154 Beginning of buffer is position (point-min).
+ − 155 If BUFFER is nil, the current buffer is assumed.
+ − 156 */
+ − 157 (buffer))
+ − 158 {
+ − 159 struct buffer *b = decode_buffer (buffer, 1);
+ − 160 return make_int (BUF_PT (b));
+ − 161 }
+ − 162
+ − 163 DEFUN ("point-marker", Fpoint_marker, 0, 2, 0, /*
+ − 164 Return value of point, as a marker object.
+ − 165 This marker is a copy; you may modify it with reckless abandon.
+ − 166 If optional argument DONT-COPY-P is non-nil, then it returns the real
+ − 167 point-marker; modifying the position of this marker will move point.
+ − 168 It is illegal to change the buffer of it, or make it point nowhere.
+ − 169 If BUFFER is nil, the current buffer is assumed.
+ − 170 */
+ − 171 (dont_copy_p, buffer))
+ − 172 {
+ − 173 struct buffer *b = decode_buffer (buffer, 1);
+ − 174 if (NILP (dont_copy_p))
+ − 175 return Fcopy_marker (b->point_marker, Qnil);
+ − 176 else
+ − 177 return b->point_marker;
+ − 178 }
+ − 179
+ − 180 /* The following two functions end up being identical but it's
+ − 181 cleaner to declare them separately. */
+ − 182
+ − 183 Bufpos
+ − 184 bufpos_clip_to_bounds (Bufpos lower, Bufpos num, Bufpos upper)
+ − 185 {
+ − 186 return (num < lower ? lower :
+ − 187 num > upper ? upper :
+ − 188 num);
+ − 189 }
+ − 190
+ − 191 Bytind
+ − 192 bytind_clip_to_bounds (Bytind lower, Bytind num, Bytind upper)
+ − 193 {
+ − 194 return (num < lower ? lower :
+ − 195 num > upper ? upper :
+ − 196 num);
+ − 197 }
+ − 198
+ − 199 /*
+ − 200 * Chuck says:
+ − 201 * There is no absolute way to determine if goto-char is the function
+ − 202 * being run. this-command doesn't work because it is often eval'd
+ − 203 * and this-command ends up set to eval-expression. So this flag gets
+ − 204 * added for now.
+ − 205 *
+ − 206 * Jamie thinks he's wrong, but we'll leave this in for now.
+ − 207 */
+ − 208 int atomic_extent_goto_char_p;
+ − 209
+ − 210 DEFUN ("goto-char", Fgoto_char, 1, 2, "NGoto char: ", /*
+ − 211 Set point to POSITION, a number or marker.
+ − 212 Beginning of buffer is position (point-min), end is (point-max).
+ − 213 If BUFFER is nil, the current buffer is assumed.
+ − 214 Return value of POSITION, as an integer.
+ − 215 */
+ − 216 (position, buffer))
+ − 217 {
+ − 218 struct buffer *b = decode_buffer (buffer, 1);
+ − 219 Bufpos n = get_buffer_pos_char (b, position, GB_COERCE_RANGE);
+ − 220 BUF_SET_PT (b, n);
+ − 221 atomic_extent_goto_char_p = 1;
+ − 222 return make_int (n);
+ − 223 }
+ − 224
+ − 225 static Lisp_Object
+ − 226 region_limit (int beginningp, struct buffer *b)
+ − 227 {
+ − 228 Lisp_Object m;
+ − 229
+ − 230 #if 0 /* FSFmacs */
+ − 231 if (!NILP (Vtransient_mark_mode) && NILP (Vmark_even_if_inactive)
+ − 232 && NILP (b->mark_active))
+ − 233 Fsignal (Qmark_inactive, Qnil);
+ − 234 #endif
+ − 235 m = Fmarker_position (b->mark);
563
+ − 236 if (NILP (m)) invalid_operation ("There is no region now", Qunbound);
428
+ − 237 if (!!(BUF_PT (b) < XINT (m)) == !!beginningp)
+ − 238 return make_int (BUF_PT (b));
+ − 239 else
+ − 240 return m;
+ − 241 }
+ − 242
+ − 243 DEFUN ("region-beginning", Fregion_beginning, 0, 1, 0, /*
+ − 244 Return position of beginning of region in BUFFER, as an integer.
+ − 245 If BUFFER is nil, the current buffer is assumed.
+ − 246 */
+ − 247 (buffer))
+ − 248 {
+ − 249 return region_limit (1, decode_buffer (buffer, 1));
+ − 250 }
+ − 251
+ − 252 DEFUN ("region-end", Fregion_end, 0, 1, 0, /*
+ − 253 Return position of end of region in BUFFER, as an integer.
+ − 254 If BUFFER is nil, the current buffer is assumed.
+ − 255 */
+ − 256 (buffer))
+ − 257 {
+ − 258 return region_limit (0, decode_buffer (buffer, 1));
+ − 259 }
+ − 260
+ − 261 /* Whether to use lispm-style active-regions */
+ − 262 int zmacs_regions;
+ − 263
+ − 264 /* Whether the zmacs region is active. This is not per-buffer because
+ − 265 there can be only one active region at a time. #### Now that the
+ − 266 zmacs region are not directly tied to the X selections this may not
+ − 267 necessarily have to be true. */
+ − 268 int zmacs_region_active_p;
+ − 269
+ − 270 int zmacs_region_stays;
+ − 271
+ − 272 Lisp_Object Qzmacs_update_region, Qzmacs_deactivate_region;
+ − 273 Lisp_Object Qzmacs_region_buffer;
+ − 274
+ − 275 void
+ − 276 zmacs_update_region (void)
+ − 277 {
+ − 278 /* This function can GC */
+ − 279 if (zmacs_region_active_p)
+ − 280 call0 (Qzmacs_update_region);
+ − 281 }
+ − 282
+ − 283 void
+ − 284 zmacs_deactivate_region (void)
+ − 285 {
+ − 286 /* This function can GC */
+ − 287 if (zmacs_region_active_p)
+ − 288 call0 (Qzmacs_deactivate_region);
+ − 289 }
+ − 290
+ − 291 Lisp_Object
+ − 292 zmacs_region_buffer (void)
+ − 293 {
+ − 294 if (zmacs_region_active_p)
+ − 295 return call0 (Qzmacs_region_buffer);
+ − 296 else
+ − 297 return Qnil;
+ − 298 }
+ − 299
+ − 300 DEFUN ("mark-marker", Fmark_marker, 0, 2, 0, /*
+ − 301 Return this buffer's mark, as a marker object.
+ − 302 If `zmacs-regions' is true, then this returns nil unless the region is
+ − 303 currently in the active (highlighted) state. If optional argument FORCE
+ − 304 is t, this returns the mark (if there is one) regardless of the zmacs-region
+ − 305 state. You should *generally* not use the mark unless the region is active,
+ − 306 if the user has expressed a preference for the zmacs-region model.
+ − 307 Watch out! Moving this marker changes the mark position.
+ − 308 If you set the marker not to point anywhere, the buffer will have no mark.
+ − 309 If BUFFER is nil, the current buffer is assumed.
+ − 310 */
+ − 311 (force, buffer))
+ − 312 {
+ − 313 struct buffer *b = decode_buffer (buffer, 1);
+ − 314 if (! zmacs_regions || zmacs_region_active_p || !NILP (force))
+ − 315 return b->mark;
+ − 316 return Qnil;
+ − 317 }
+ − 318
+ − 319
+ − 320 /* The saved object is a cons:
+ − 321
+ − 322 (COPY-OF-POINT-MARKER . COPY-OF-MARK)
+ − 323
+ − 324 We used to have another cons for a VISIBLE-P element, which was t
+ − 325 if `(eq (current-buffer) (window-buffer (selected-window)))' but it
+ − 326 was unused for a long time, so I removed it. --hniksic */
+ − 327 Lisp_Object
+ − 328 save_excursion_save (void)
+ − 329 {
+ − 330 struct buffer *b;
+ − 331
+ − 332 /* #### Huh? --hniksic */
+ − 333 /*if (preparing_for_armageddon) return Qnil;*/
+ − 334
+ − 335 #ifdef ERROR_CHECK_BUFPOS
+ − 336 assert (XINT (Fpoint (Qnil)) ==
+ − 337 XINT (Fmarker_position (Fpoint_marker (Qt, Qnil))));
+ − 338 #endif
+ − 339
+ − 340 b = current_buffer;
+ − 341
+ − 342 return noseeum_cons (noseeum_copy_marker (b->point_marker, Qnil),
+ − 343 noseeum_copy_marker (b->mark, Qnil));
+ − 344 }
+ − 345
+ − 346 Lisp_Object
+ − 347 save_excursion_restore (Lisp_Object info)
+ − 348 {
+ − 349 Lisp_Object buffer = Fmarker_buffer (XCAR (info));
+ − 350
+ − 351 /* If buffer being returned to is now deleted, avoid error --
+ − 352 otherwise could get error here while unwinding to top level and
+ − 353 crash. In that case, Fmarker_buffer returns nil now. */
+ − 354 if (!NILP (buffer))
+ − 355 {
+ − 356 struct buffer *buf = XBUFFER (buffer);
+ − 357 struct gcpro gcpro1;
+ − 358 GCPRO1 (info);
+ − 359 set_buffer_internal (buf);
+ − 360 Fgoto_char (XCAR (info), buffer);
+ − 361 Fset_marker (buf->mark, XCDR (info), buffer);
+ − 362
+ − 363 #if 0 /* We used to make the current buffer visible in the selected window
+ − 364 if that was true previously. That avoids some anomalies.
+ − 365 But it creates others, and it wasn't documented, and it is simpler
+ − 366 and cleaner never to alter the window/buffer connections. */
+ − 367 /* I'm certain some code somewhere depends on this behavior. --jwz */
+ − 368 /* Even if it did, it certainly doesn't matter anymore, because
+ − 369 this has been the behavior for countless XEmacs releases
+ − 370 now. --hniksic */
+ − 371 if (visible
+ − 372 && (current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)))
+ − 373 switch_to_buffer (Fcurrent_buffer (), Qnil);
+ − 374 #endif
+ − 375
+ − 376 UNGCPRO;
+ − 377 }
+ − 378
+ − 379 /* Free all the junk we allocated, so that a `save-excursion' comes
+ − 380 for free in terms of GC junk. */
+ − 381 free_marker (XMARKER (XCAR (info)));
+ − 382 free_marker (XMARKER (XCDR (info)));
+ − 383 free_cons (XCONS (info));
+ − 384 return Qnil;
+ − 385 }
+ − 386
+ − 387 DEFUN ("save-excursion", Fsave_excursion, 0, UNEVALLED, 0, /*
+ − 388 Save point, mark, and current buffer; execute BODY; restore those things.
+ − 389 Executes BODY just like `progn'.
+ − 390 The values of point, mark and the current buffer are restored
+ − 391 even in case of abnormal exit (throw or error).
+ − 392 */
+ − 393 (args))
+ − 394 {
+ − 395 /* This function can GC */
+ − 396 int speccount = specpdl_depth ();
+ − 397
+ − 398 record_unwind_protect (save_excursion_restore, save_excursion_save ());
+ − 399
+ − 400 return unbind_to (speccount, Fprogn (args));
+ − 401 }
+ − 402
+ − 403 Lisp_Object
+ − 404 save_current_buffer_restore (Lisp_Object buffer)
+ − 405 {
+ − 406 struct buffer *buf = XBUFFER (buffer);
+ − 407 /* Avoid signaling an error if the buffer is no longer alive. This
+ − 408 is for consistency with save-excursion. */
+ − 409 if (BUFFER_LIVE_P (buf))
+ − 410 set_buffer_internal (buf);
+ − 411 return Qnil;
+ − 412 }
+ − 413
+ − 414 DEFUN ("save-current-buffer", Fsave_current_buffer, 0, UNEVALLED, 0, /*
+ − 415 Save the current buffer; execute BODY; restore the current buffer.
+ − 416 Executes BODY just like `progn'.
+ − 417 */
+ − 418 (args))
+ − 419 {
+ − 420 /* This function can GC */
+ − 421 int speccount = specpdl_depth ();
+ − 422
+ − 423 record_unwind_protect (save_current_buffer_restore, Fcurrent_buffer ());
+ − 424
+ − 425 return unbind_to (speccount, Fprogn (args));
+ − 426 }
+ − 427
+ − 428 DEFUN ("buffer-size", Fbuffer_size, 0, 1, 0, /*
+ − 429 Return the number of characters in BUFFER.
+ − 430 If BUFFER is nil, the current buffer is assumed.
+ − 431 */
+ − 432 (buffer))
+ − 433 {
+ − 434 struct buffer *b = decode_buffer (buffer, 1);
+ − 435 return make_int (BUF_SIZE (b));
+ − 436 }
+ − 437
+ − 438 DEFUN ("point-min", Fpoint_min, 0, 1, 0, /*
+ − 439 Return the minimum permissible value of point in BUFFER.
434
+ − 440 This is 1, unless narrowing (a buffer restriction)
+ − 441 is in effect, in which case it may be greater.
428
+ − 442 If BUFFER is nil, the current buffer is assumed.
+ − 443 */
+ − 444 (buffer))
+ − 445 {
+ − 446 struct buffer *b = decode_buffer (buffer, 1);
+ − 447 return make_int (BUF_BEGV (b));
+ − 448 }
+ − 449
+ − 450 DEFUN ("point-min-marker", Fpoint_min_marker, 0, 1, 0, /*
+ − 451 Return a marker to the minimum permissible value of point in BUFFER.
434
+ − 452 This is the beginning, unless narrowing (a buffer restriction)
+ − 453 is in effect, in which case it may be greater.
428
+ − 454 If BUFFER is nil, the current buffer is assumed.
+ − 455 */
+ − 456 (buffer))
+ − 457 {
+ − 458 struct buffer *b = decode_buffer (buffer, 1);
+ − 459 return buildmark (BUF_BEGV (b), make_buffer (b));
+ − 460 }
+ − 461
+ − 462 DEFUN ("point-max", Fpoint_max, 0, 1, 0, /*
+ − 463 Return the maximum permissible value of point in BUFFER.
+ − 464 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)
434
+ − 465 is in effect, in which case it may be less.
428
+ − 466 If BUFFER is nil, the current buffer is assumed.
+ − 467 */
+ − 468 (buffer))
+ − 469 {
+ − 470 struct buffer *b = decode_buffer (buffer, 1);
+ − 471 return make_int (BUF_ZV (b));
+ − 472 }
+ − 473
+ − 474 DEFUN ("point-max-marker", Fpoint_max_marker, 0, 1, 0, /*
434
+ − 475 Return a marker to the maximum permissible value of point in BUFFER.
428
+ − 476 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)
434
+ − 477 is in effect, in which case it may be less.
428
+ − 478 If BUFFER is nil, the current buffer is assumed.
+ − 479 */
+ − 480 (buffer))
+ − 481 {
+ − 482 struct buffer *b = decode_buffer (buffer, 1);
+ − 483 return buildmark (BUF_ZV (b), make_buffer (b));
+ − 484 }
+ − 485
+ − 486 DEFUN ("following-char", Ffollowing_char, 0, 1, 0, /*
+ − 487 Return the character following point.
+ − 488 At the end of the buffer or accessible region, return 0.
+ − 489 If BUFFER is nil, the current buffer is assumed.
+ − 490 */
+ − 491 (buffer))
+ − 492 {
+ − 493 struct buffer *b = decode_buffer (buffer, 1);
+ − 494 if (BUF_PT (b) >= BUF_ZV (b))
+ − 495 return Qzero; /* #### Gag me! */
+ − 496 else
+ − 497 return make_char (BUF_FETCH_CHAR (b, BUF_PT (b)));
+ − 498 }
+ − 499
+ − 500 DEFUN ("preceding-char", Fpreceding_char, 0, 1, 0, /*
+ − 501 Return the character preceding point.
+ − 502 At the beginning of the buffer or accessible region, return 0.
+ − 503 If BUFFER is nil, the current buffer is assumed.
+ − 504 */
+ − 505 (buffer))
+ − 506 {
+ − 507 struct buffer *b = decode_buffer (buffer, 1);
+ − 508 if (BUF_PT (b) <= BUF_BEGV (b))
+ − 509 return Qzero; /* #### Gag me! */
+ − 510 else
+ − 511 return make_char (BUF_FETCH_CHAR (b, BUF_PT (b) - 1));
+ − 512 }
+ − 513
+ − 514 DEFUN ("bobp", Fbobp, 0, 1, 0, /*
+ − 515 Return t if point is at the beginning of the buffer.
+ − 516 If the buffer is narrowed, this means the beginning of the narrowed part.
+ − 517 If BUFFER is nil, the current buffer is assumed.
+ − 518 */
+ − 519 (buffer))
+ − 520 {
+ − 521 struct buffer *b = decode_buffer (buffer, 1);
+ − 522 return BUF_PT (b) == BUF_BEGV (b) ? Qt : Qnil;
+ − 523 }
+ − 524
+ − 525 DEFUN ("eobp", Feobp, 0, 1, 0, /*
+ − 526 Return t if point is at the end of the buffer.
+ − 527 If the buffer is narrowed, this means the end of the narrowed part.
+ − 528 If BUFFER is nil, the current buffer is assumed.
+ − 529 */
+ − 530 (buffer))
+ − 531 {
+ − 532 struct buffer *b = decode_buffer (buffer, 1);
+ − 533 return BUF_PT (b) == BUF_ZV (b) ? Qt : Qnil;
+ − 534 }
+ − 535
+ − 536 int
+ − 537 beginning_of_line_p (struct buffer *b, Bufpos pt)
+ − 538 {
+ − 539 return pt <= BUF_BEGV (b) || BUF_FETCH_CHAR (b, pt - 1) == '\n';
+ − 540 }
+ − 541
+ − 542
+ − 543 DEFUN ("bolp", Fbolp, 0, 1, 0, /*
+ − 544 Return t if point is at the beginning of a line.
+ − 545 If BUFFER is nil, the current buffer is assumed.
+ − 546 */
+ − 547 (buffer))
+ − 548 {
+ − 549 struct buffer *b = decode_buffer (buffer, 1);
+ − 550 return beginning_of_line_p (b, BUF_PT (b)) ? Qt : Qnil;
+ − 551 }
+ − 552
+ − 553 DEFUN ("eolp", Feolp, 0, 1, 0, /*
+ − 554 Return t if point is at the end of a line.
+ − 555 `End of a line' includes point being at the end of the buffer.
+ − 556 If BUFFER is nil, the current buffer is assumed.
+ − 557 */
+ − 558 (buffer))
+ − 559 {
+ − 560 struct buffer *b = decode_buffer (buffer, 1);
+ − 561 return (BUF_PT (b) == BUF_ZV (b) || BUF_FETCH_CHAR (b, BUF_PT (b)) == '\n')
+ − 562 ? Qt : Qnil;
+ − 563 }
+ − 564
+ − 565 DEFUN ("char-after", Fchar_after, 0, 2, 0, /*
434
+ − 566 Return the character at position POS in BUFFER.
+ − 567 POS is an integer or a marker.
428
+ − 568 If POS is out of range, the value is nil.
434
+ − 569 if POS is nil, the value of point is assumed.
428
+ − 570 If BUFFER is nil, the current buffer is assumed.
+ − 571 */
+ − 572 (pos, buffer))
+ − 573 {
+ − 574 struct buffer *b = decode_buffer (buffer, 1);
+ − 575 Bufpos n = (NILP (pos) ? BUF_PT (b) :
+ − 576 get_buffer_pos_char (b, pos, GB_NO_ERROR_IF_BAD));
+ − 577
+ − 578 if (n < 0 || n == BUF_ZV (b))
+ − 579 return Qnil;
+ − 580 return make_char (BUF_FETCH_CHAR (b, n));
+ − 581 }
+ − 582
+ − 583 DEFUN ("char-before", Fchar_before, 0, 2, 0, /*
434
+ − 584 Return the character preceding position POS in BUFFER.
+ − 585 POS is an integer or a marker.
428
+ − 586 If POS is out of range, the value is nil.
434
+ − 587 if POS is nil, the value of point is assumed.
428
+ − 588 If BUFFER is nil, the current buffer is assumed.
+ − 589 */
+ − 590 (pos, buffer))
+ − 591 {
+ − 592 struct buffer *b = decode_buffer (buffer, 1);
434
+ − 593 Bufpos n = (NILP (pos) ? BUF_PT (b) :
+ − 594 get_buffer_pos_char (b, pos, GB_NO_ERROR_IF_BAD));
428
+ − 595
+ − 596 n--;
+ − 597
+ − 598 if (n < BUF_BEGV (b))
+ − 599 return Qnil;
+ − 600 return make_char (BUF_FETCH_CHAR (b, n));
+ − 601 }
+ − 602
442
+ − 603 #if !defined(WINDOWSNT) && !defined(MSDOS)
+ − 604 #include <sys/stat.h>
+ − 605 #include <fcntl.h>
+ − 606 #include <errno.h>
+ − 607 #include <limits.h>
+ − 608 #endif
428
+ − 609
+ − 610 DEFUN ("temp-directory", Ftemp_directory, 0, 0, 0, /*
+ − 611 Return the pathname to the directory to use for temporary files.
442
+ − 612 On MS Windows, this is obtained from the TEMP or TMP environment variables,
428
+ − 613 defaulting to / if they are both undefined.
444
+ − 614 On Unix it is obtained from TMPDIR, with /tmp as the default.
428
+ − 615 */
+ − 616 ())
+ − 617 {
+ − 618 char *tmpdir;
442
+ − 619 #if defined(WIN32_NATIVE)
428
+ − 620 tmpdir = getenv ("TEMP");
+ − 621 if (!tmpdir)
+ − 622 tmpdir = getenv ("TMP");
+ − 623 if (!tmpdir)
+ − 624 tmpdir = "/";
442
+ − 625 #else /* WIN32_NATIVE */
428
+ − 626 tmpdir = getenv ("TMPDIR");
+ − 627 if (!tmpdir)
442
+ − 628 {
+ − 629 struct stat st;
+ − 630 int myuid = getuid();
+ − 631 static char path[5 /* strlen ("/tmp/") */ + 1 + _POSIX_PATH_MAX];
+ − 632
+ − 633 strcpy (path, "/tmp/");
+ − 634 strncat (path, user_login_name (NULL), _POSIX_PATH_MAX);
+ − 635 if (lstat(path, &st) < 0 && errno == ENOENT)
+ − 636 {
+ − 637 mkdir(path, 0700); /* ignore retval -- checked next anyway. */
+ − 638 }
664
+ − 639 if (lstat(path, &st) == 0 && st.st_uid == (uid_t) myuid &&
+ − 640 S_ISDIR(st.st_mode))
442
+ − 641 {
+ − 642 tmpdir = path;
+ − 643 }
+ − 644 else
+ − 645 {
+ − 646 strcpy(path, getenv("HOME")); strncat(path, "/tmp/", _POSIX_PATH_MAX);
+ − 647 if (stat(path, &st) < 0 && errno == ENOENT)
+ − 648 {
+ − 649 int fd;
+ − 650 char warnpath[1+_POSIX_PATH_MAX];
+ − 651 mkdir(path, 0700); /* ignore retvals */
+ − 652 strcpy(warnpath, path);
+ − 653 strncat(warnpath, ".created_by_xemacs", _POSIX_PATH_MAX);
+ − 654 if ((fd = open(warnpath, O_WRONLY|O_CREAT, 0644)) > 0)
+ − 655 {
+ − 656 write(fd, "XEmacs created this directory because /tmp/<yourname> was unavailable -- \nPlease check !\n", 89);
+ − 657 close(fd);
+ − 658 }
+ − 659 }
+ − 660 if (stat(path, &st) == 0 && S_ISDIR(st.st_mode))
+ − 661 {
+ − 662 tmpdir = path;
+ − 663 }
+ − 664 else
+ − 665 {
428
+ − 666 tmpdir = "/tmp";
442
+ − 667 }
+ − 668 }
+ − 669 }
428
+ − 670 #endif
+ − 671
440
+ − 672 return build_ext_string (tmpdir, Qfile_name);
428
+ − 673 }
+ − 674
+ − 675 DEFUN ("user-login-name", Fuser_login_name, 0, 1, 0, /*
+ − 676 Return the name under which the user logged in, as a string.
+ − 677 This is based on the effective uid, not the real uid.
+ − 678 Also, if the environment variable LOGNAME or USER is set,
+ − 679 that determines the value of this function.
+ − 680 If the optional argument UID is present, then environment variables are
+ − 681 ignored and this function returns the login name for that UID, or nil.
+ − 682 */
+ − 683 (uid))
+ − 684 {
+ − 685 char *returned_name;
+ − 686 uid_t local_uid;
+ − 687
+ − 688 if (!NILP (uid))
+ − 689 {
+ − 690 CHECK_INT (uid);
+ − 691 local_uid = XINT (uid);
+ − 692 returned_name = user_login_name (&local_uid);
+ − 693 }
+ − 694 else
+ − 695 {
+ − 696 returned_name = user_login_name (NULL);
+ − 697 }
+ − 698 /* #### - I believe this should return nil instead of "unknown" when pw==0
+ − 699 pw=0 is indicated by a null return from user_login_name
+ − 700 */
+ − 701 return returned_name ? build_string (returned_name) : Qnil;
+ − 702 }
+ − 703
+ − 704 /* This function may be called from other C routines when a
+ − 705 character string representation of the user_login_name is
+ − 706 needed but a Lisp Object is not. The UID is passed by
+ − 707 reference. If UID == NULL, then the USER name
+ − 708 for the user running XEmacs will be returned. This
+ − 709 corresponds to a nil argument to Fuser_login_name.
+ − 710 */
+ − 711 char*
+ − 712 user_login_name (uid_t *uid)
+ − 713 {
+ − 714 /* uid == NULL to return name of this user */
+ − 715 if (uid != NULL)
+ − 716 {
+ − 717 struct passwd *pw = getpwuid (*uid);
+ − 718 return pw ? pw->pw_name : NULL;
+ − 719 }
+ − 720 else
+ − 721 {
+ − 722 /* #### - when euid != uid, then LOGNAME and USER are leftovers from the
+ − 723 old environment (I site observed behavior on sunos and linux), so the
+ − 724 environment variables should be disregarded in that case. --Stig */
+ − 725 char *user_name = getenv ("LOGNAME");
+ − 726 if (!user_name)
+ − 727 user_name = getenv (
442
+ − 728 #ifdef WIN32_NATIVE
428
+ − 729 "USERNAME" /* it's USERNAME on NT */
+ − 730 #else
+ − 731 "USER"
+ − 732 #endif
+ − 733 );
+ − 734 if (user_name)
+ − 735 return (user_name);
+ − 736 else
+ − 737 {
+ − 738 struct passwd *pw = getpwuid (geteuid ());
442
+ − 739 #ifdef CYGWIN
428
+ − 740 /* Since the Cygwin environment may not have an /etc/passwd,
+ − 741 return "unknown" instead of the null if the username
+ − 742 cannot be determined.
+ − 743 */
593
+ − 744 /* !!#### fix up in my mule ws */
+ − 745 return pw ? pw->pw_name : (char *) "unknown";
428
+ − 746 #else
+ − 747 /* For all but Cygwin return NULL (nil) */
+ − 748 return pw ? pw->pw_name : NULL;
+ − 749 #endif
+ − 750 }
+ − 751 }
+ − 752 }
+ − 753
+ − 754 DEFUN ("user-real-login-name", Fuser_real_login_name, 0, 0, 0, /*
+ − 755 Return the name of the user's real uid, as a string.
+ − 756 This ignores the environment variables LOGNAME and USER, so it differs from
+ − 757 `user-login-name' when running under `su'.
+ − 758 */
+ − 759 ())
+ − 760 {
+ − 761 struct passwd *pw = getpwuid (getuid ());
+ − 762 /* #### - I believe this should return nil instead of "unknown" when pw==0 */
+ − 763
+ − 764 Lisp_Object tem = build_string (pw ? pw->pw_name : "unknown");/* no gettext */
+ − 765 return tem;
+ − 766 }
+ − 767
+ − 768 DEFUN ("user-uid", Fuser_uid, 0, 0, 0, /*
+ − 769 Return the effective uid of Emacs, as an integer.
+ − 770 */
+ − 771 ())
+ − 772 {
+ − 773 return make_int (geteuid ());
+ − 774 }
+ − 775
+ − 776 DEFUN ("user-real-uid", Fuser_real_uid, 0, 0, 0, /*
+ − 777 Return the real uid of Emacs, as an integer.
+ − 778 */
+ − 779 ())
+ − 780 {
+ − 781 return make_int (getuid ());
+ − 782 }
+ − 783
+ − 784 DEFUN ("user-full-name", Fuser_full_name, 0, 1, 0, /*
+ − 785 Return the full name of the user logged in, as a string.
+ − 786 If the optional argument USER is given, then the full name for that
+ − 787 user is returned, or nil. USER may be either a login name or a uid.
+ − 788
+ − 789 If USER is nil, and `user-full-name' contains a string, the
+ − 790 value of `user-full-name' is returned.
+ − 791 */
+ − 792 (user))
+ − 793 {
+ − 794 Lisp_Object user_name;
+ − 795 struct passwd *pw = NULL;
+ − 796 Lisp_Object tem;
+ − 797 const char *p, *q;
+ − 798
+ − 799 if (NILP (user) && STRINGP (Vuser_full_name))
+ − 800 return Vuser_full_name;
+ − 801
+ − 802 user_name = (STRINGP (user) ? user : Fuser_login_name (user));
+ − 803 if (!NILP (user_name)) /* nil when nonexistent UID passed as arg */
+ − 804 {
442
+ − 805 const char *user_name_ext;
428
+ − 806
+ − 807 /* Fuck me. getpwnam() can call select() and (under IRIX at least)
+ − 808 things get wedged if a SIGIO arrives during this time. */
440
+ − 809 TO_EXTERNAL_FORMAT (LISP_STRING, user_name,
+ − 810 C_STRING_ALLOCA, user_name_ext,
+ − 811 Qnative);
428
+ − 812 slow_down_interrupts ();
+ − 813 pw = (struct passwd *) getpwnam (user_name_ext);
+ − 814 speed_up_interrupts ();
+ − 815 }
+ − 816
+ − 817 /* #### - Stig sez: this should return nil instead of "unknown" when pw==0 */
+ − 818 /* Ben sez: bad idea because it's likely to break something */
+ − 819 #ifndef AMPERSAND_FULL_NAME
442
+ − 820 p = pw ? USER_FULL_NAME : "unknown"; /* don't gettext */
428
+ − 821 q = strchr (p, ',');
+ − 822 #else
442
+ − 823 p = pw ? USER_FULL_NAME : "unknown"; /* don't gettext */
428
+ − 824 q = strchr (p, ',');
+ − 825 #endif
+ − 826 tem = ((!NILP (user) && !pw)
+ − 827 ? Qnil
664
+ − 828 : make_ext_string ((Extbyte *) p, (q ? q - p : (int) strlen (p)),
440
+ − 829 Qnative));
428
+ − 830
+ − 831 #ifdef AMPERSAND_FULL_NAME
+ − 832 if (!NILP (tem))
+ − 833 {
+ − 834 p = (char *) XSTRING_DATA (tem);
+ − 835 q = strchr (p, '&');
+ − 836 /* Substitute the login name for the &, upcasing the first character. */
+ − 837 if (q)
+ − 838 {
+ − 839 char *r = (char *) alloca (strlen (p) + XSTRING_LENGTH (user_name) + 1);
+ − 840 memcpy (r, p, q - p);
+ − 841 r[q - p] = 0;
+ − 842 strcat (r, (char *) XSTRING_DATA (user_name));
+ − 843 /* #### current_buffer dependency! */
+ − 844 r[q - p] = UPCASE (current_buffer, r[q - p]);
+ − 845 strcat (r, q + 1);
+ − 846 tem = build_string (r);
+ − 847 }
+ − 848 }
+ − 849 #endif /* AMPERSAND_FULL_NAME */
+ − 850
+ − 851 return tem;
+ − 852 }
+ − 853
440
+ − 854 static Extbyte *cached_home_directory;
428
+ − 855
+ − 856 void
+ − 857 uncache_home_directory (void)
+ − 858 {
+ − 859 cached_home_directory = NULL; /* in some cases, this may cause the leaking
+ − 860 of a few bytes */
+ − 861 }
+ − 862
442
+ − 863 /* !!#### not Mule correct. */
+ − 864
428
+ − 865 /* Returns the home directory, in external format */
440
+ − 866 Extbyte *
428
+ − 867 get_home_directory (void)
+ − 868 {
442
+ − 869 /* !!#### this is hopelessly bogus. Rule #1: Do not make any assumptions
+ − 870 about what format an external string is in. Could be Unicode, for all
+ − 871 we know, and then all the operations below are totally bogus.
+ − 872 Instead, convert all data to internal format *right* at the juncture
+ − 873 between XEmacs and the outside world, the very moment we first get
+ − 874 the data. --ben */
428
+ − 875 int output_home_warning = 0;
+ − 876
+ − 877 if (cached_home_directory == NULL)
+ − 878 {
440
+ − 879 if ((cached_home_directory = (Extbyte *) getenv("HOME")) == NULL)
428
+ − 880 {
442
+ − 881 #if defined(WIN32_NATIVE)
440
+ − 882 char *homedrive, *homepath;
428
+ − 883
+ − 884 if ((homedrive = getenv("HOMEDRIVE")) != NULL &&
+ − 885 (homepath = getenv("HOMEPATH")) != NULL)
+ − 886 {
+ − 887 cached_home_directory =
440
+ − 888 (Extbyte *) xmalloc (strlen (homedrive) +
+ − 889 strlen (homepath) + 1);
+ − 890 sprintf((char *) cached_home_directory, "%s%s",
+ − 891 homedrive,
+ − 892 homepath);
428
+ − 893 }
+ − 894 else
+ − 895 {
442
+ − 896 # if 0 /* changed by ben. This behavior absolutely stinks, and the
+ − 897 possibility being addressed here occurs quite commonly.
+ − 898 Using the current directory makes absolutely no sense. */
428
+ − 899 /*
+ − 900 * Use the current directory.
+ − 901 * This preserves the existing XEmacs behavior, but is different
+ − 902 * from NT Emacs.
+ − 903 */
+ − 904 if (initial_directory[0] != '\0')
+ − 905 {
442
+ − 906 cached_home_directory = (Extbyte*) initial_directory;
428
+ − 907 }
+ − 908 else
+ − 909 {
+ − 910 /* This will probably give the wrong value */
442
+ − 911 cached_home_directory = (Extbyte*) getcwd (NULL, 0);
428
+ − 912 }
+ − 913 # else
+ − 914 /*
+ − 915 * This is NT Emacs behavior
+ − 916 */
440
+ − 917 cached_home_directory = (Extbyte *) "C:\\";
428
+ − 918 output_home_warning = 1;
+ − 919 # endif
+ − 920 }
442
+ − 921 #else /* !WIN32_NATIVE */
428
+ − 922 /*
+ − 923 * Unix, typically.
+ − 924 * Using "/" isn't quite right, but what should we do?
+ − 925 * We probably should try to extract pw_dir from /etc/passwd,
+ − 926 * before falling back to this.
+ − 927 */
440
+ − 928 cached_home_directory = (Extbyte *) "/";
428
+ − 929 output_home_warning = 1;
442
+ − 930 #endif /* !WIN32_NATIVE */
428
+ − 931 }
+ − 932 if (initialized && output_home_warning)
+ − 933 {
+ − 934 warn_when_safe (Quser_files_and_directories, Qwarning, "\n"
+ − 935 " XEmacs was unable to determine a good value for the user's $HOME\n"
+ − 936 " directory, and will be using the value:\n"
+ − 937 " %s\n"
+ − 938 " This is probably incorrect.",
+ − 939 cached_home_directory
+ − 940 );
+ − 941 }
+ − 942 }
+ − 943 return cached_home_directory;
+ − 944 }
+ − 945
+ − 946 DEFUN ("user-home-directory", Fuser_home_directory, 0, 0, 0, /*
+ − 947 Return the user's home directory, as a string.
+ − 948 */
+ − 949 ())
+ − 950 {
440
+ − 951 Extbyte *path = get_home_directory ();
428
+ − 952
+ − 953 return path == NULL ? Qnil :
+ − 954 Fexpand_file_name (Fsubstitute_in_file_name
440
+ − 955 (build_ext_string ((char *) path, Qfile_name)),
428
+ − 956 Qnil);
+ − 957 }
+ − 958
+ − 959 DEFUN ("system-name", Fsystem_name, 0, 0, 0, /*
+ − 960 Return the name of the machine you are running on, as a string.
+ − 961 */
+ − 962 ())
+ − 963 {
+ − 964 return Fcopy_sequence (Vsystem_name);
+ − 965 }
+ − 966
+ − 967 DEFUN ("emacs-pid", Femacs_pid, 0, 0, 0, /*
+ − 968 Return the process ID of Emacs, as an integer.
+ − 969 */
+ − 970 ())
+ − 971 {
+ − 972 return make_int (getpid ());
+ − 973 }
+ − 974
+ − 975 DEFUN ("current-time", Fcurrent_time, 0, 0, 0, /*
+ − 976 Return the current time, as the number of seconds since 1970-01-01 00:00:00.
+ − 977 The time is returned as a list of three integers. The first has the
+ − 978 most significant 16 bits of the seconds, while the second has the
+ − 979 least significant 16 bits. The third integer gives the microsecond
+ − 980 count.
+ − 981
+ − 982 The microsecond count is zero on systems that do not provide
+ − 983 resolution finer than a second.
+ − 984 */
+ − 985 ())
+ − 986 {
+ − 987 EMACS_TIME t;
+ − 988
+ − 989 EMACS_GET_TIME (t);
+ − 990 return list3 (make_int ((EMACS_SECS (t) >> 16) & 0xffff),
+ − 991 make_int ((EMACS_SECS (t) >> 0) & 0xffff),
+ − 992 make_int (EMACS_USECS (t)));
+ − 993 }
+ − 994
+ − 995 DEFUN ("current-process-time", Fcurrent_process_time, 0, 0, 0, /*
+ − 996 Return the amount of time used by this XEmacs process so far.
+ − 997 The return value is a list of three floating-point numbers, expressing
+ − 998 the user, system, and real times used by the process. The user time
+ − 999 measures the time actually spent by the CPU executing the code in this
+ − 1000 process. The system time measures time spent by the CPU executing kernel
+ − 1001 code on behalf of this process (e.g. I/O requests made by the process).
+ − 1002
+ − 1003 Note that the user and system times measure processor time, as opposed
+ − 1004 to real time, and only accrue when the processor is actually doing
+ − 1005 something: Time spent in an idle wait (waiting for user events to come
+ − 1006 in or for I/O on a disk drive or other device to complete) does not
+ − 1007 count. Thus, the user and system times will often be considerably
+ − 1008 less than the real time.
+ − 1009
+ − 1010 Some systems do not allow the user and system times to be distinguished.
+ − 1011 In this case, the user time will be the total processor time used by
+ − 1012 the process, and the system time will be 0.
+ − 1013
+ − 1014 Some systems do not allow the real and processor times to be distinguished.
+ − 1015 In this case, the user and real times will be the same and the system
+ − 1016 time will be 0.
+ − 1017 */
+ − 1018 ())
+ − 1019 {
+ − 1020 double user, sys, real;
+ − 1021
+ − 1022 get_process_times (&user, &sys, &real);
+ − 1023 return list3 (make_float (user), make_float (sys), make_float (real));
+ − 1024 }
+ − 1025
+ − 1026
+ − 1027 int lisp_to_time (Lisp_Object specified_time, time_t *result);
+ − 1028 int
+ − 1029 lisp_to_time (Lisp_Object specified_time, time_t *result)
+ − 1030 {
+ − 1031 Lisp_Object high, low;
+ − 1032
+ − 1033 if (NILP (specified_time))
+ − 1034 return time (result) != -1;
+ − 1035
+ − 1036 CHECK_CONS (specified_time);
+ − 1037 high = XCAR (specified_time);
+ − 1038 low = XCDR (specified_time);
+ − 1039 if (CONSP (low))
+ − 1040 low = XCAR (low);
+ − 1041 CHECK_INT (high);
+ − 1042 CHECK_INT (low);
+ − 1043 *result = (XINT (high) << 16) + (XINT (low) & 0xffff);
+ − 1044 return *result >> 16 == XINT (high);
+ − 1045 }
+ − 1046
+ − 1047 Lisp_Object time_to_lisp (time_t the_time);
+ − 1048 Lisp_Object
+ − 1049 time_to_lisp (time_t the_time)
+ − 1050 {
+ − 1051 unsigned int item = (unsigned int) the_time;
+ − 1052 return Fcons (make_int (item >> 16), make_int (item & 0xffff));
+ − 1053 }
+ − 1054
442
+ − 1055 size_t emacs_strftime (char *string, size_t max, const char *format,
+ − 1056 const struct tm *tm);
+ − 1057 static long difftm (const struct tm *a, const struct tm *b);
428
+ − 1058
+ − 1059
+ − 1060 DEFUN ("format-time-string", Fformat_time_string, 1, 2, 0, /*
+ − 1061 Use FORMAT-STRING to format the time TIME.
+ − 1062 TIME is specified as (HIGH LOW . IGNORED) or (HIGH . LOW), as from
+ − 1063 `current-time' and `file-attributes'. If TIME is not specified it
+ − 1064 defaults to the current time.
+ − 1065 FORMAT-STRING may contain %-sequences to substitute parts of the time.
+ − 1066 %a is replaced by the abbreviated name of the day of week.
+ − 1067 %A is replaced by the full name of the day of week.
+ − 1068 %b is replaced by the abbreviated name of the month.
+ − 1069 %B is replaced by the full name of the month.
+ − 1070 %c is a synonym for "%x %X".
+ − 1071 %C is a locale-specific synonym, which defaults to "%A, %B %e, %Y" in the C locale.
+ − 1072 %d is replaced by the day of month, zero-padded.
+ − 1073 %D is a synonym for "%m/%d/%y".
+ − 1074 %e is replaced by the day of month, blank-padded.
+ − 1075 %h is a synonym for "%b".
+ − 1076 %H is replaced by the hour (00-23).
+ − 1077 %I is replaced by the hour (00-12).
+ − 1078 %j is replaced by the day of the year (001-366).
+ − 1079 %k is replaced by the hour (0-23), blank padded.
+ − 1080 %l is replaced by the hour (1-12), blank padded.
+ − 1081 %m is replaced by the month (01-12).
+ − 1082 %M is replaced by the minute (00-59).
+ − 1083 %n is a synonym for "\\n".
+ − 1084 %p is replaced by AM or PM, as appropriate.
+ − 1085 %r is a synonym for "%I:%M:%S %p".
+ − 1086 %R is a synonym for "%H:%M".
+ − 1087 %s is replaced by the time in seconds since 00:00:00, Jan 1, 1970 (a
+ − 1088 nonstandard extension)
+ − 1089 %S is replaced by the second (00-60).
+ − 1090 %t is a synonym for "\\t".
+ − 1091 %T is a synonym for "%H:%M:%S".
+ − 1092 %U is replaced by the week of the year (00-53), first day of week is Sunday.
+ − 1093 %w is replaced by the day of week (0-6), Sunday is day 0.
+ − 1094 %W is replaced by the week of the year (00-53), first day of week is Monday.
+ − 1095 %x is a locale-specific synonym, which defaults to "%D" in the C locale.
+ − 1096 %X is a locale-specific synonym, which defaults to "%T" in the C locale.
+ − 1097 %y is replaced by the year without century (00-99).
+ − 1098 %Y is replaced by the year with century.
+ − 1099 %Z is replaced by the time zone abbreviation.
+ − 1100
+ − 1101 The number of options reflects the `strftime' function.
+ − 1102
+ − 1103 BUG: If the charset used by the current locale is not ISO 8859-1, the
+ − 1104 characters appearing in the day and month names may be incorrect.
+ − 1105 */
+ − 1106 (format_string, time_))
+ − 1107 {
+ − 1108 time_t value;
647
+ − 1109 Memory_Count size;
428
+ − 1110
+ − 1111 CHECK_STRING (format_string);
+ − 1112
+ − 1113 if (! lisp_to_time (time_, &value))
563
+ − 1114 invalid_argument ("Invalid time specification", Qunbound);
428
+ − 1115
+ − 1116 /* This is probably enough. */
+ − 1117 size = XSTRING_LENGTH (format_string) * 6 + 50;
+ − 1118
+ − 1119 while (1)
+ − 1120 {
+ − 1121 char *buf = (char *) alloca (size);
+ − 1122 *buf = 1;
+ − 1123 if (emacs_strftime (buf, size,
442
+ − 1124 (const char *) XSTRING_DATA (format_string),
428
+ − 1125 localtime (&value))
+ − 1126 || !*buf)
440
+ − 1127 return build_ext_string (buf, Qbinary);
428
+ − 1128 /* If buffer was too small, make it bigger. */
+ − 1129 size *= 2;
+ − 1130 }
+ − 1131 }
+ − 1132
+ − 1133 DEFUN ("decode-time", Fdecode_time, 0, 1, 0, /*
+ − 1134 Decode a time value as (SEC MINUTE HOUR DAY MONTH YEAR DOW DST ZONE).
+ − 1135 The optional SPECIFIED-TIME should be a list of (HIGH LOW . IGNORED)
+ − 1136 or (HIGH . LOW), as from `current-time' and `file-attributes', or `nil'
+ − 1137 to use the current time. The list has the following nine members:
+ − 1138 SEC is an integer between 0 and 60; SEC is 60 for a leap second, which
+ − 1139 only some operating systems support. MINUTE is an integer between 0 and 59.
+ − 1140 HOUR is an integer between 0 and 23. DAY is an integer between 1 and 31.
+ − 1141 MONTH is an integer between 1 and 12. YEAR is an integer indicating the
+ − 1142 four-digit year. DOW is the day of week, an integer between 0 and 6, where
+ − 1143 0 is Sunday. DST is t if daylight savings time is effect, otherwise nil.
+ − 1144 ZONE is an integer indicating the number of seconds east of Greenwich.
+ − 1145 \(Note that Common Lisp has different meanings for DOW and ZONE.)
+ − 1146 */
+ − 1147 (specified_time))
+ − 1148 {
+ − 1149 time_t time_spec;
+ − 1150 struct tm save_tm;
+ − 1151 struct tm *decoded_time;
+ − 1152 Lisp_Object list_args[9];
+ − 1153
+ − 1154 if (! lisp_to_time (specified_time, &time_spec))
563
+ − 1155 invalid_argument ("Invalid time specification", Qunbound);
428
+ − 1156
+ − 1157 decoded_time = localtime (&time_spec);
+ − 1158 list_args[0] = make_int (decoded_time->tm_sec);
+ − 1159 list_args[1] = make_int (decoded_time->tm_min);
+ − 1160 list_args[2] = make_int (decoded_time->tm_hour);
+ − 1161 list_args[3] = make_int (decoded_time->tm_mday);
+ − 1162 list_args[4] = make_int (decoded_time->tm_mon + 1);
+ − 1163 list_args[5] = make_int (decoded_time->tm_year + 1900);
+ − 1164 list_args[6] = make_int (decoded_time->tm_wday);
+ − 1165 list_args[7] = (decoded_time->tm_isdst)? Qt : Qnil;
+ − 1166
+ − 1167 /* Make a copy, in case gmtime modifies the struct. */
+ − 1168 save_tm = *decoded_time;
+ − 1169 decoded_time = gmtime (&time_spec);
+ − 1170 if (decoded_time == 0)
+ − 1171 list_args[8] = Qnil;
+ − 1172 else
+ − 1173 list_args[8] = make_int (difftm (&save_tm, decoded_time));
+ − 1174 return Flist (9, list_args);
+ − 1175 }
+ − 1176
+ − 1177 static void set_time_zone_rule (char *tzstring);
+ − 1178
+ − 1179 DEFUN ("encode-time", Fencode_time, 6, MANY, 0, /*
+ − 1180 Convert SECOND, MINUTE, HOUR, DAY, MONTH, YEAR and ZONE to internal time.
+ − 1181 This is the reverse operation of `decode-time', which see.
+ − 1182 ZONE defaults to the current time zone rule. This can
+ − 1183 be a string (as from `set-time-zone-rule'), or it can be a list
+ − 1184 \(as from `current-time-zone') or an integer (as from `decode-time')
+ − 1185 applied without consideration for daylight savings time.
+ − 1186
+ − 1187 You can pass more than 7 arguments; then the first six arguments
+ − 1188 are used as SECOND through YEAR, and the *last* argument is used as ZONE.
+ − 1189 The intervening arguments are ignored.
+ − 1190 This feature lets (apply 'encode-time (decode-time ...)) work.
+ − 1191
+ − 1192 Out-of-range values for SEC, MINUTE, HOUR, DAY, or MONTH are allowed;
+ − 1193 for example, a DAY of 0 means the day preceding the given month.
+ − 1194 Year numbers less than 100 are treated just like other year numbers.
+ − 1195 If you want them to stand for years in this century, you must do that yourself.
+ − 1196 */
+ − 1197 (int nargs, Lisp_Object *args))
+ − 1198 {
+ − 1199 time_t the_time;
+ − 1200 struct tm tm;
+ − 1201 Lisp_Object zone = (nargs > 6) ? args[nargs - 1] : Qnil;
+ − 1202
+ − 1203 CHECK_INT (*args); tm.tm_sec = XINT (*args++); /* second */
+ − 1204 CHECK_INT (*args); tm.tm_min = XINT (*args++); /* minute */
+ − 1205 CHECK_INT (*args); tm.tm_hour = XINT (*args++); /* hour */
+ − 1206 CHECK_INT (*args); tm.tm_mday = XINT (*args++); /* day */
+ − 1207 CHECK_INT (*args); tm.tm_mon = XINT (*args++) - 1; /* month */
+ − 1208 CHECK_INT (*args); tm.tm_year = XINT (*args++) - 1900;/* year */
+ − 1209
+ − 1210 tm.tm_isdst = -1;
+ − 1211
+ − 1212 if (CONSP (zone))
+ − 1213 zone = XCAR (zone);
+ − 1214 if (NILP (zone))
+ − 1215 the_time = mktime (&tm);
+ − 1216 else
+ − 1217 {
+ − 1218 char tzbuf[100];
+ − 1219 char *tzstring;
+ − 1220 char **oldenv = environ, **newenv;
+ − 1221
+ − 1222 if (STRINGP (zone))
+ − 1223 tzstring = (char *) XSTRING_DATA (zone);
+ − 1224 else if (INTP (zone))
+ − 1225 {
+ − 1226 int abszone = abs (XINT (zone));
+ − 1227 sprintf (tzbuf, "XXX%s%d:%02d:%02d", "-" + (XINT (zone) < 0),
+ − 1228 abszone / (60*60), (abszone/60) % 60, abszone % 60);
+ − 1229 tzstring = tzbuf;
+ − 1230 }
+ − 1231 else
563
+ − 1232 invalid_argument ("Invalid time zone specification", Qunbound);
428
+ − 1233
+ − 1234 /* Set TZ before calling mktime; merely adjusting mktime's returned
+ − 1235 value doesn't suffice, since that would mishandle leap seconds. */
+ − 1236 set_time_zone_rule (tzstring);
+ − 1237
+ − 1238 the_time = mktime (&tm);
+ − 1239
+ − 1240 /* Restore TZ to previous value. */
+ − 1241 newenv = environ;
+ − 1242 environ = oldenv;
+ − 1243 free (newenv);
+ − 1244 #ifdef LOCALTIME_CACHE
+ − 1245 tzset ();
+ − 1246 #endif
+ − 1247 }
+ − 1248
+ − 1249 if (the_time == (time_t) -1)
563
+ − 1250 invalid_argument ("Specified time is not representable", Qunbound);
428
+ − 1251
+ − 1252 return wasteful_word_to_lisp (the_time);
+ − 1253 }
+ − 1254
+ − 1255 DEFUN ("current-time-string", Fcurrent_time_string, 0, 1, 0, /*
+ − 1256 Return the current time, as a human-readable string.
+ − 1257 Programs can use this function to decode a time,
+ − 1258 since the number of columns in each field is fixed.
+ − 1259 The format is `Sun Sep 16 01:03:52 1973'.
+ − 1260 If an argument is given, it specifies a time to format
+ − 1261 instead of the current time. The argument should have the form:
+ − 1262 (HIGH . LOW)
+ − 1263 or the form:
+ − 1264 (HIGH LOW . IGNORED).
+ − 1265 Thus, you can use times obtained from `current-time'
+ − 1266 and from `file-attributes'.
+ − 1267 */
+ − 1268 (specified_time))
+ − 1269 {
+ − 1270 time_t value;
442
+ − 1271 char *the_ctime;
647
+ − 1272 EMACS_INT len; /* this is what make_ext_string() accepts; ####
+ − 1273 should it be an Extcount? */
428
+ − 1274
+ − 1275 if (! lisp_to_time (specified_time, &value))
+ − 1276 value = -1;
442
+ − 1277 the_ctime = ctime (&value);
428
+ − 1278
442
+ − 1279 /* ctime is documented as always returning a "\n\0"-terminated
+ − 1280 26-byte American time string, but let's be careful anyways. */
+ − 1281 for (len = 0; the_ctime[len] != '\n' && the_ctime[len] != '\0'; len++)
+ − 1282 ;
428
+ − 1283
442
+ − 1284 return make_ext_string ((Extbyte *) the_ctime, len, Qbinary);
428
+ − 1285 }
+ − 1286
+ − 1287 #define TM_YEAR_ORIGIN 1900
+ − 1288
+ − 1289 /* Yield A - B, measured in seconds. */
+ − 1290 static long
442
+ − 1291 difftm (const struct tm *a, const struct tm *b)
428
+ − 1292 {
+ − 1293 int ay = a->tm_year + (TM_YEAR_ORIGIN - 1);
+ − 1294 int by = b->tm_year + (TM_YEAR_ORIGIN - 1);
+ − 1295 /* Some compilers can't handle this as a single return statement. */
+ − 1296 long days = (
+ − 1297 /* difference in day of year */
+ − 1298 a->tm_yday - b->tm_yday
+ − 1299 /* + intervening leap days */
+ − 1300 + ((ay >> 2) - (by >> 2))
+ − 1301 - (ay/100 - by/100)
+ − 1302 + ((ay/100 >> 2) - (by/100 >> 2))
+ − 1303 /* + difference in years * 365 */
+ − 1304 + (long)(ay-by) * 365
+ − 1305 );
+ − 1306 return (60*(60*(24*days + (a->tm_hour - b->tm_hour))
+ − 1307 + (a->tm_min - b->tm_min))
+ − 1308 + (a->tm_sec - b->tm_sec));
+ − 1309 }
+ − 1310
+ − 1311 DEFUN ("current-time-zone", Fcurrent_time_zone, 0, 1, 0, /*
+ − 1312 Return the offset and name for the local time zone.
+ − 1313 This returns a list of the form (OFFSET NAME).
+ − 1314 OFFSET is an integer number of seconds ahead of UTC (east of Greenwich).
+ − 1315 A negative value means west of Greenwich.
+ − 1316 NAME is a string giving the name of the time zone.
+ − 1317 If an argument is given, it specifies when the time zone offset is determined
+ − 1318 instead of using the current time. The argument should have the form:
+ − 1319 (HIGH . LOW)
+ − 1320 or the form:
+ − 1321 (HIGH LOW . IGNORED).
+ − 1322 Thus, you can use times obtained from `current-time'
+ − 1323 and from `file-attributes'.
+ − 1324
+ − 1325 Some operating systems cannot provide all this information to Emacs;
+ − 1326 in this case, `current-time-zone' returns a list containing nil for
+ − 1327 the data it can't find.
+ − 1328 */
+ − 1329 (specified_time))
+ − 1330 {
+ − 1331 time_t value;
+ − 1332 struct tm *t = NULL;
+ − 1333
+ − 1334 if (lisp_to_time (specified_time, &value)
+ − 1335 && (t = gmtime (&value)) != 0)
+ − 1336 {
+ − 1337 struct tm gmt = *t; /* Make a copy, in case localtime modifies *t. */
+ − 1338 long offset;
+ − 1339 char *s, buf[6];
+ − 1340
+ − 1341 t = localtime (&value);
+ − 1342 offset = difftm (t, &gmt);
+ − 1343 s = 0;
+ − 1344 #ifdef HAVE_TM_ZONE
+ − 1345 if (t->tm_zone)
+ − 1346 s = (char *)t->tm_zone;
+ − 1347 #else /* not HAVE_TM_ZONE */
+ − 1348 #ifdef HAVE_TZNAME
+ − 1349 if (t->tm_isdst == 0 || t->tm_isdst == 1)
+ − 1350 s = tzname[t->tm_isdst];
+ − 1351 #endif
+ − 1352 #endif /* not HAVE_TM_ZONE */
+ − 1353 if (!s)
+ − 1354 {
+ − 1355 /* No local time zone name is available; use "+-NNNN" instead. */
+ − 1356 int am = (offset < 0 ? -offset : offset) / 60;
+ − 1357 sprintf (buf, "%c%02d%02d", (offset < 0 ? '-' : '+'), am/60, am%60);
+ − 1358 s = buf;
+ − 1359 }
+ − 1360 return list2 (make_int (offset), build_string (s));
+ − 1361 }
+ − 1362 else
+ − 1363 return list2 (Qnil, Qnil);
+ − 1364 }
+ − 1365
+ − 1366 #ifdef LOCALTIME_CACHE
+ − 1367
+ − 1368 /* These two values are known to load tz files in buggy implementations,
+ − 1369 i.e. Solaris 1 executables running under either Solaris 1 or Solaris 2.
+ − 1370 Their values shouldn't matter in non-buggy implementations.
+ − 1371 We don't use string literals for these strings,
+ − 1372 since if a string in the environment is in readonly
+ − 1373 storage, it runs afoul of bugs in SVR4 and Solaris 2.3.
+ − 1374 See Sun bugs 1113095 and 1114114, ``Timezone routines
+ − 1375 improperly modify environment''. */
+ − 1376
+ − 1377 static char set_time_zone_rule_tz1[] = "TZ=GMT+0";
+ − 1378 static char set_time_zone_rule_tz2[] = "TZ=GMT+1";
+ − 1379
+ − 1380 #endif
+ − 1381
+ − 1382 /* Set the local time zone rule to TZSTRING.
+ − 1383 This allocates memory into `environ', which it is the caller's
+ − 1384 responsibility to free. */
+ − 1385 static void
+ − 1386 set_time_zone_rule (char *tzstring)
+ − 1387 {
+ − 1388 int envptrs;
+ − 1389 char **from, **to, **newenv;
+ − 1390
+ − 1391 for (from = environ; *from; from++)
+ − 1392 continue;
+ − 1393 envptrs = from - environ + 2;
+ − 1394 newenv = to = (char **) xmalloc (envptrs * sizeof (char *)
+ − 1395 + (tzstring ? strlen (tzstring) + 4 : 0));
+ − 1396 if (tzstring)
+ − 1397 {
+ − 1398 char *t = (char *) (to + envptrs);
+ − 1399 strcpy (t, "TZ=");
+ − 1400 strcat (t, tzstring);
+ − 1401 *to++ = t;
+ − 1402 }
+ − 1403
+ − 1404 for (from = environ; *from; from++)
+ − 1405 if (strncmp (*from, "TZ=", 3) != 0)
+ − 1406 *to++ = *from;
+ − 1407 *to = 0;
+ − 1408
+ − 1409 environ = newenv;
+ − 1410
+ − 1411 #ifdef LOCALTIME_CACHE
+ − 1412 {
+ − 1413 /* In SunOS 4.1.3_U1 and 4.1.4, if TZ has a value like
+ − 1414 "US/Pacific" that loads a tz file, then changes to a value like
+ − 1415 "XXX0" that does not load a tz file, and then changes back to
+ − 1416 its original value, the last change is (incorrectly) ignored.
+ − 1417 Also, if TZ changes twice in succession to values that do
+ − 1418 not load a tz file, tzset can dump core (see Sun bug#1225179).
+ − 1419 The following code works around these bugs. */
+ − 1420
+ − 1421 if (tzstring)
+ − 1422 {
+ − 1423 /* Temporarily set TZ to a value that loads a tz file
+ − 1424 and that differs from tzstring. */
+ − 1425 char *tz = *newenv;
+ − 1426 *newenv = (strcmp (tzstring, set_time_zone_rule_tz1 + 3) == 0
+ − 1427 ? set_time_zone_rule_tz2 : set_time_zone_rule_tz1);
+ − 1428 tzset ();
+ − 1429 *newenv = tz;
+ − 1430 }
+ − 1431 else
+ − 1432 {
+ − 1433 /* The implied tzstring is unknown, so temporarily set TZ to
+ − 1434 two different values that each load a tz file. */
+ − 1435 *to = set_time_zone_rule_tz1;
+ − 1436 to[1] = 0;
+ − 1437 tzset ();
+ − 1438 *to = set_time_zone_rule_tz2;
+ − 1439 tzset ();
+ − 1440 *to = 0;
+ − 1441 }
+ − 1442
+ − 1443 /* Now TZ has the desired value, and tzset can be invoked safely. */
+ − 1444 }
+ − 1445
+ − 1446 tzset ();
+ − 1447 #endif
+ − 1448 }
+ − 1449
+ − 1450 DEFUN ("set-time-zone-rule", Fset_time_zone_rule, 1, 1, 0, /*
+ − 1451 Set the local time zone using TZ, a string specifying a time zone rule.
+ − 1452 If TZ is nil, use implementation-defined default time zone information.
+ − 1453 */
+ − 1454 (tz))
+ − 1455 {
+ − 1456 char *tzstring;
+ − 1457
+ − 1458 if (NILP (tz))
+ − 1459 tzstring = 0;
+ − 1460 else
+ − 1461 {
+ − 1462 CHECK_STRING (tz);
+ − 1463 tzstring = (char *) XSTRING_DATA (tz);
+ − 1464 }
+ − 1465
+ − 1466 set_time_zone_rule (tzstring);
+ − 1467 if (environbuf)
+ − 1468 xfree (environbuf);
+ − 1469 environbuf = environ;
+ − 1470
+ − 1471 return Qnil;
+ − 1472 }
+ − 1473
+ − 1474
+ − 1475 void
+ − 1476 buffer_insert1 (struct buffer *buf, Lisp_Object arg)
+ − 1477 {
+ − 1478 /* This function can GC */
+ − 1479 struct gcpro gcpro1;
+ − 1480 GCPRO1 (arg);
+ − 1481 retry:
+ − 1482 if (CHAR_OR_CHAR_INTP (arg))
+ − 1483 {
+ − 1484 buffer_insert_emacs_char (buf, XCHAR_OR_CHAR_INT (arg));
+ − 1485 }
+ − 1486 else if (STRINGP (arg))
+ − 1487 {
+ − 1488 buffer_insert_lisp_string (buf, arg);
+ − 1489 }
+ − 1490 else
+ − 1491 {
+ − 1492 arg = wrong_type_argument (Qchar_or_string_p, arg);
+ − 1493 goto retry;
+ − 1494 }
+ − 1495 UNGCPRO;
+ − 1496 }
+ − 1497
+ − 1498
+ − 1499 /* Callers passing one argument to Finsert need not gcpro the
+ − 1500 argument "array", since the only element of the array will
+ − 1501 not be used after calling insert_emacs_char or insert_lisp_string,
+ − 1502 so we don't care if it gets trashed. */
+ − 1503
+ − 1504 DEFUN ("insert", Finsert, 0, MANY, 0, /*
+ − 1505 Insert the arguments, either strings or characters, at point.
+ − 1506 Point moves forward so that it ends up after the inserted text.
+ − 1507 Any other markers at the point of insertion remain before the text.
+ − 1508 If a string has non-null string-extent-data, new extents will be created.
+ − 1509 */
+ − 1510 (int nargs, Lisp_Object *args))
+ − 1511 {
+ − 1512 /* This function can GC */
+ − 1513 REGISTER int argnum;
+ − 1514
+ − 1515 for (argnum = 0; argnum < nargs; argnum++)
+ − 1516 {
+ − 1517 buffer_insert1 (current_buffer, args[argnum]);
+ − 1518 }
+ − 1519
+ − 1520 return Qnil;
+ − 1521 }
+ − 1522
+ − 1523 DEFUN ("insert-before-markers", Finsert_before_markers, 0, MANY, 0, /*
+ − 1524 Insert strings or characters at point, relocating markers after the text.
+ − 1525 Point moves forward so that it ends up after the inserted text.
+ − 1526 Any other markers at the point of insertion also end up after the text.
+ − 1527 */
+ − 1528 (int nargs, Lisp_Object *args))
+ − 1529 {
+ − 1530 /* This function can GC */
+ − 1531 REGISTER int argnum;
+ − 1532 REGISTER Lisp_Object tem;
+ − 1533
+ − 1534 for (argnum = 0; argnum < nargs; argnum++)
+ − 1535 {
+ − 1536 tem = args[argnum];
+ − 1537 retry:
+ − 1538 if (CHAR_OR_CHAR_INTP (tem))
+ − 1539 {
+ − 1540 buffer_insert_emacs_char_1 (current_buffer, -1,
+ − 1541 XCHAR_OR_CHAR_INT (tem),
+ − 1542 INSDEL_BEFORE_MARKERS);
+ − 1543 }
+ − 1544 else if (STRINGP (tem))
+ − 1545 {
+ − 1546 buffer_insert_lisp_string_1 (current_buffer, -1, tem,
+ − 1547 INSDEL_BEFORE_MARKERS);
+ − 1548 }
+ − 1549 else
+ − 1550 {
+ − 1551 tem = wrong_type_argument (Qchar_or_string_p, tem);
+ − 1552 goto retry;
+ − 1553 }
+ − 1554 }
+ − 1555 return Qnil;
+ − 1556 }
+ − 1557
+ − 1558 DEFUN ("insert-string", Finsert_string, 1, 2, 0, /*
+ − 1559 Insert STRING into BUFFER at BUFFER's point.
+ − 1560 Point moves forward so that it ends up after the inserted text.
+ − 1561 Any other markers at the point of insertion remain before the text.
+ − 1562 If a string has non-null string-extent-data, new extents will be created.
+ − 1563 BUFFER defaults to the current buffer.
+ − 1564 */
+ − 1565 (string, buffer))
+ − 1566 {
+ − 1567 struct buffer *b = decode_buffer (buffer, 1);
+ − 1568 CHECK_STRING (string);
+ − 1569 buffer_insert_lisp_string (b, string);
+ − 1570 return Qnil;
+ − 1571 }
+ − 1572
+ − 1573 /* Third argument in FSF is INHERIT:
+ − 1574
+ − 1575 "The optional third arg INHERIT, if non-nil, says to inherit text properties
+ − 1576 from adjoining text, if those properties are sticky."
+ − 1577
+ − 1578 Jamie thinks this is bogus. */
+ − 1579
+ − 1580
+ − 1581 DEFUN ("insert-char", Finsert_char, 1, 4, 0, /*
444
+ − 1582 Insert COUNT copies of CHARACTER into BUFFER.
428
+ − 1583 Point and all markers are affected as in the function `insert'.
+ − 1584 COUNT defaults to 1 if omitted.
+ − 1585 The optional third arg IGNORED is INHERIT under FSF Emacs.
+ − 1586 This is highly bogus, however, and XEmacs always behaves as if
+ − 1587 `t' were passed to INHERIT.
+ − 1588 The optional fourth arg BUFFER specifies the buffer to insert the
+ − 1589 text into. If BUFFER is nil, the current buffer is assumed.
+ − 1590 */
444
+ − 1591 (character, count, ignored, buffer))
428
+ − 1592 {
+ − 1593 /* This function can GC */
+ − 1594 REGISTER Bufbyte *string;
+ − 1595 REGISTER int slen;
+ − 1596 REGISTER int i, j;
+ − 1597 REGISTER Bytecount n;
+ − 1598 REGISTER Bytecount charlen;
+ − 1599 Bufbyte str[MAX_EMCHAR_LEN];
+ − 1600 struct buffer *b = decode_buffer (buffer, 1);
+ − 1601 int cou;
+ − 1602
444
+ − 1603 CHECK_CHAR_COERCE_INT (character);
428
+ − 1604 if (NILP (count))
+ − 1605 cou = 1;
+ − 1606 else
+ − 1607 {
+ − 1608 CHECK_INT (count);
+ − 1609 cou = XINT (count);
+ − 1610 }
+ − 1611
444
+ − 1612 charlen = set_charptr_emchar (str, XCHAR (character));
428
+ − 1613 n = cou * charlen;
+ − 1614 if (n <= 0)
+ − 1615 return Qnil;
+ − 1616 slen = min (n, 768);
+ − 1617 string = alloca_array (Bufbyte, slen);
+ − 1618 /* Write as many copies of the character into the temp string as will fit. */
+ − 1619 for (i = 0; i + charlen <= slen; i += charlen)
+ − 1620 for (j = 0; j < charlen; j++)
+ − 1621 string[i + j] = str[j];
+ − 1622 slen = i;
+ − 1623 while (n >= slen)
+ − 1624 {
+ − 1625 buffer_insert_raw_string (b, string, slen);
+ − 1626 n -= slen;
+ − 1627 }
+ − 1628 if (n > 0)
+ − 1629 #if 0 /* FSFmacs bogosity */
+ − 1630 {
+ − 1631 if (!NILP (inherit))
+ − 1632 insert_and_inherit (string, n);
+ − 1633 else
+ − 1634 insert (string, n);
+ − 1635 }
+ − 1636 #else
+ − 1637 buffer_insert_raw_string (b, string, n);
+ − 1638 #endif
+ − 1639
+ − 1640 return Qnil;
+ − 1641 }
+ − 1642
+ − 1643
+ − 1644 /* Making strings from buffer contents. */
+ − 1645
+ − 1646 DEFUN ("buffer-substring", Fbuffer_substring, 0, 3, 0, /*
+ − 1647 Return the contents of part of BUFFER as a string.
+ − 1648 The two arguments START and END are character positions;
+ − 1649 they can be in either order. If omitted, they default to the beginning
+ − 1650 and end of BUFFER, respectively.
+ − 1651 If there are duplicable extents in the region, the string remembers
+ − 1652 them in its extent data.
+ − 1653 If BUFFER is nil, the current buffer is assumed.
+ − 1654 */
+ − 1655 (start, end, buffer))
+ − 1656 {
+ − 1657 /* This function can GC */
+ − 1658 Bufpos begv, zv;
+ − 1659 struct buffer *b = decode_buffer (buffer, 1);
+ − 1660
+ − 1661 get_buffer_range_char (b, start, end, &begv, &zv, GB_ALLOW_NIL);
+ − 1662 return make_string_from_buffer (b, begv, zv - begv);
+ − 1663 }
+ − 1664
+ − 1665 /* It might make more sense to name this
+ − 1666 `buffer-substring-no-extents', but this name is FSFmacs-compatible,
+ − 1667 and what the function does is probably good enough for what the
+ − 1668 user-code will typically want to use it for. */
+ − 1669 DEFUN ("buffer-substring-no-properties", Fbuffer_substring_no_properties, 0, 3, 0, /*
444
+ − 1670 Return the text from START to END as a string, without copying the extents.
428
+ − 1671 */
+ − 1672 (start, end, buffer))
+ − 1673 {
+ − 1674 /* This function can GC */
+ − 1675 Bufpos begv, zv;
+ − 1676 struct buffer *b = decode_buffer (buffer, 1);
+ − 1677
+ − 1678 get_buffer_range_char (b, start, end, &begv, &zv, GB_ALLOW_NIL);
+ − 1679 return make_string_from_buffer_no_extents (b, begv, zv - begv);
+ − 1680 }
+ − 1681
+ − 1682 DEFUN ("insert-buffer-substring", Finsert_buffer_substring, 1, 3, 0, /*
+ − 1683 Insert before point a substring of the contents of buffer BUFFER.
+ − 1684 BUFFER may be a buffer or a buffer name.
+ − 1685 Arguments START and END are character numbers specifying the substring.
+ − 1686 They default to the beginning and the end of BUFFER.
+ − 1687 */
+ − 1688 (buffer, start, end))
+ − 1689 {
+ − 1690 /* This function can GC */
+ − 1691 Bufpos b, e;
+ − 1692 struct buffer *bp;
+ − 1693
+ − 1694 bp = XBUFFER (get_buffer (buffer, 1));
+ − 1695 get_buffer_range_char (bp, start, end, &b, &e, GB_ALLOW_NIL);
+ − 1696
+ − 1697 if (b < e)
+ − 1698 buffer_insert_from_buffer (current_buffer, bp, b, e - b);
+ − 1699
+ − 1700 return Qnil;
+ − 1701 }
+ − 1702
+ − 1703 DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings, 6, 6, 0, /*
+ − 1704 Compare two substrings of two buffers; return result as number.
+ − 1705 the value is -N if first string is less after N-1 chars,
+ − 1706 +N if first string is greater after N-1 chars, or 0 if strings match.
+ − 1707 Each substring is represented as three arguments: BUFFER, START and END.
+ − 1708 That makes six args in all, three for each substring.
+ − 1709
+ − 1710 The value of `case-fold-search' in the current buffer
+ − 1711 determines whether case is significant or ignored.
+ − 1712 */
+ − 1713 (buffer1, start1, end1, buffer2, start2, end2))
+ − 1714 {
+ − 1715 Bufpos begp1, endp1, begp2, endp2;
+ − 1716 REGISTER Charcount len1, len2, length, i;
+ − 1717 struct buffer *bp1, *bp2;
+ − 1718 Lisp_Object trt = ((!NILP (current_buffer->case_fold_search)) ?
446
+ − 1719 XCASE_TABLE_CANON (current_buffer->case_table) : Qnil);
428
+ − 1720
+ − 1721 /* Find the first buffer and its substring. */
+ − 1722
+ − 1723 bp1 = decode_buffer (buffer1, 1);
+ − 1724 get_buffer_range_char (bp1, start1, end1, &begp1, &endp1, GB_ALLOW_NIL);
+ − 1725
+ − 1726 /* Likewise for second substring. */
+ − 1727
+ − 1728 bp2 = decode_buffer (buffer2, 1);
+ − 1729 get_buffer_range_char (bp2, start2, end2, &begp2, &endp2, GB_ALLOW_NIL);
+ − 1730
+ − 1731 len1 = endp1 - begp1;
+ − 1732 len2 = endp2 - begp2;
+ − 1733 length = len1;
+ − 1734 if (len2 < length)
+ − 1735 length = len2;
+ − 1736
+ − 1737 for (i = 0; i < length; i++)
+ − 1738 {
+ − 1739 Emchar c1 = BUF_FETCH_CHAR (bp1, begp1 + i);
+ − 1740 Emchar c2 = BUF_FETCH_CHAR (bp2, begp2 + i);
+ − 1741 if (!NILP (trt))
+ − 1742 {
+ − 1743 c1 = TRT_TABLE_OF (trt, c1);
+ − 1744 c2 = TRT_TABLE_OF (trt, c2);
+ − 1745 }
+ − 1746 if (c1 < c2)
+ − 1747 return make_int (- 1 - i);
+ − 1748 if (c1 > c2)
+ − 1749 return make_int (i + 1);
+ − 1750 }
+ − 1751
+ − 1752 /* The strings match as far as they go.
+ − 1753 If one is shorter, that one is less. */
+ − 1754 if (length < len1)
+ − 1755 return make_int (length + 1);
+ − 1756 else if (length < len2)
+ − 1757 return make_int (- length - 1);
+ − 1758
+ − 1759 /* Same length too => they are equal. */
+ − 1760 return Qzero;
+ − 1761 }
+ − 1762
+ − 1763
+ − 1764 static Lisp_Object
+ − 1765 subst_char_in_region_unwind (Lisp_Object arg)
+ − 1766 {
+ − 1767 XBUFFER (XCAR (arg))->undo_list = XCDR (arg);
+ − 1768 return Qnil;
+ − 1769 }
+ − 1770
+ − 1771 static Lisp_Object
+ − 1772 subst_char_in_region_unwind_1 (Lisp_Object arg)
+ − 1773 {
+ − 1774 XBUFFER (XCAR (arg))->filename = XCDR (arg);
+ − 1775 return Qnil;
+ − 1776 }
+ − 1777
+ − 1778 DEFUN ("subst-char-in-region", Fsubst_char_in_region, 4, 5, 0, /*
+ − 1779 From START to END, replace FROMCHAR with TOCHAR each time it occurs.
+ − 1780 If optional arg NOUNDO is non-nil, don't record this change for undo
+ − 1781 and don't mark the buffer as really changed.
+ − 1782 */
+ − 1783 (start, end, fromchar, tochar, noundo))
+ − 1784 {
+ − 1785 /* This function can GC */
+ − 1786 Bufpos pos, stop;
+ − 1787 Emchar fromc, toc;
+ − 1788 int mc_count;
+ − 1789 struct buffer *buf = current_buffer;
+ − 1790 int count = specpdl_depth ();
+ − 1791
+ − 1792 get_buffer_range_char (buf, start, end, &pos, &stop, 0);
+ − 1793 CHECK_CHAR_COERCE_INT (fromchar);
+ − 1794 CHECK_CHAR_COERCE_INT (tochar);
+ − 1795
+ − 1796 fromc = XCHAR (fromchar);
+ − 1797 toc = XCHAR (tochar);
+ − 1798
+ − 1799 /* If we don't want undo, turn off putting stuff on the list.
+ − 1800 That's faster than getting rid of things,
+ − 1801 and it prevents even the entry for a first change.
+ − 1802 Also inhibit locking the file. */
+ − 1803 if (!NILP (noundo))
+ − 1804 {
+ − 1805 record_unwind_protect (subst_char_in_region_unwind,
+ − 1806 Fcons (Fcurrent_buffer (), buf->undo_list));
+ − 1807 buf->undo_list = Qt;
+ − 1808 /* Don't do file-locking. */
+ − 1809 record_unwind_protect (subst_char_in_region_unwind_1,
+ − 1810 Fcons (Fcurrent_buffer (), buf->filename));
+ − 1811 buf->filename = Qnil;
+ − 1812 }
+ − 1813
+ − 1814 mc_count = begin_multiple_change (buf, pos, stop);
+ − 1815 while (pos < stop)
+ − 1816 {
+ − 1817 if (BUF_FETCH_CHAR (buf, pos) == fromc)
+ − 1818 {
+ − 1819 /* There used to be some code here that set the buffer to
+ − 1820 unmodified if NOUNDO was specified and there was only
+ − 1821 one change to the buffer since it was last saved.
+ − 1822 This is a crock of shit, so I'm not duplicating this
+ − 1823 behavior. I think this was left over from when
+ − 1824 prepare_to_modify_buffer() actually bumped MODIFF,
+ − 1825 so that code was supposed to undo this change. --ben */
+ − 1826 buffer_replace_char (buf, pos, toc, !NILP (noundo), 0);
+ − 1827
+ − 1828 /* If noundo is not nil then we don't mark the buffer as
+ − 1829 modified. In reality that needs to happen externally
+ − 1830 only. Internally redisplay needs to know that the actual
+ − 1831 contents it should be displaying have changed. */
+ − 1832 if (!NILP (noundo))
+ − 1833 Fset_buffer_modified_p (Fbuffer_modified_p (Qnil), Qnil);
+ − 1834 }
+ − 1835 pos++;
+ − 1836 }
+ − 1837 end_multiple_change (buf, mc_count);
+ − 1838
+ − 1839 unbind_to (count, Qnil);
+ − 1840 return Qnil;
+ − 1841 }
+ − 1842
+ − 1843 /* #### Shouldn't this also accept a BUFFER argument, in the good old
+ − 1844 XEmacs tradition? */
+ − 1845 DEFUN ("translate-region", Ftranslate_region, 3, 3, 0, /*
+ − 1846 Translate characters from START to END according to TABLE.
+ − 1847
+ − 1848 If TABLE is a string, the Nth character in it is the mapping for the
+ − 1849 character with code N.
+ − 1850
+ − 1851 If TABLE is a vector, its Nth element is the mapping for character
+ − 1852 with code N. The values of elements may be characters, strings, or
+ − 1853 nil (nil meaning don't replace.)
+ − 1854
+ − 1855 If TABLE is a char-table, its elements describe the mapping between
+ − 1856 characters and their replacements. The char-table should be of type
+ − 1857 `char' or `generic'.
+ − 1858
+ − 1859 Returns the number of substitutions performed.
+ − 1860 */
+ − 1861 (start, end, table))
+ − 1862 {
+ − 1863 /* This function can GC */
+ − 1864 Bufpos pos, stop; /* Limits of the region. */
+ − 1865 int cnt = 0; /* Number of changes made. */
+ − 1866 int mc_count;
+ − 1867 struct buffer *buf = current_buffer;
+ − 1868 Emchar oc;
+ − 1869
+ − 1870 get_buffer_range_char (buf, start, end, &pos, &stop, 0);
+ − 1871 mc_count = begin_multiple_change (buf, pos, stop);
+ − 1872 if (STRINGP (table))
+ − 1873 {
440
+ − 1874 Lisp_String *stable = XSTRING (table);
428
+ − 1875 Charcount size = string_char_length (stable);
+ − 1876 #ifdef MULE
+ − 1877 /* Under Mule, string_char(n) is O(n), so for large tables or
+ − 1878 large regions it makes sense to create an array of Emchars. */
+ − 1879 if (size * (stop - pos) > 65536)
+ − 1880 {
+ − 1881 Emchar *etable = alloca_array (Emchar, size);
+ − 1882 convert_bufbyte_string_into_emchar_string
+ − 1883 (string_data (stable), string_length (stable), etable);
+ − 1884 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++)
+ − 1885 {
+ − 1886 if (oc < size)
+ − 1887 {
+ − 1888 Emchar nc = etable[oc];
+ − 1889 if (nc != oc)
+ − 1890 {
+ − 1891 buffer_replace_char (buf, pos, nc, 0, 0);
+ − 1892 ++cnt;
+ − 1893 }
+ − 1894 }
+ − 1895 }
+ − 1896 }
+ − 1897 else
+ − 1898 #endif /* MULE */
+ − 1899 {
+ − 1900 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++)
+ − 1901 {
+ − 1902 if (oc < size)
+ − 1903 {
+ − 1904 Emchar nc = string_char (stable, oc);
+ − 1905 if (nc != oc)
+ − 1906 {
+ − 1907 buffer_replace_char (buf, pos, nc, 0, 0);
+ − 1908 ++cnt;
+ − 1909 }
+ − 1910 }
+ − 1911 }
+ − 1912 }
+ − 1913 }
+ − 1914 else if (VECTORP (table))
+ − 1915 {
+ − 1916 Charcount size = XVECTOR_LENGTH (table);
+ − 1917 Lisp_Object *vtable = XVECTOR_DATA (table);
+ − 1918
+ − 1919 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++)
+ − 1920 {
+ − 1921 if (oc < size)
+ − 1922 {
+ − 1923 Lisp_Object replacement = vtable[oc];
+ − 1924 retry:
+ − 1925 if (CHAR_OR_CHAR_INTP (replacement))
+ − 1926 {
+ − 1927 Emchar nc = XCHAR_OR_CHAR_INT (replacement);
+ − 1928 if (nc != oc)
+ − 1929 {
+ − 1930 buffer_replace_char (buf, pos, nc, 0, 0);
+ − 1931 ++cnt;
+ − 1932 }
+ − 1933 }
+ − 1934 else if (STRINGP (replacement))
+ − 1935 {
+ − 1936 Charcount incr = XSTRING_CHAR_LENGTH (replacement) - 1;
+ − 1937 buffer_delete_range (buf, pos, pos + 1, 0);
+ − 1938 buffer_insert_lisp_string_1 (buf, pos, replacement, 0);
+ − 1939 pos += incr, stop += incr;
+ − 1940 ++cnt;
+ − 1941 }
+ − 1942 else if (!NILP (replacement))
+ − 1943 {
+ − 1944 replacement = wrong_type_argument (Qchar_or_string_p, replacement);
+ − 1945 goto retry;
+ − 1946 }
+ − 1947 }
+ − 1948 }
+ − 1949 }
+ − 1950 else if (CHAR_TABLEP (table)
+ − 1951 && (XCHAR_TABLE_TYPE (table) == CHAR_TABLE_TYPE_GENERIC
+ − 1952 || XCHAR_TABLE_TYPE (table) == CHAR_TABLE_TYPE_CHAR))
+ − 1953 {
440
+ − 1954 Lisp_Char_Table *ctable = XCHAR_TABLE (table);
428
+ − 1955
+ − 1956 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++)
+ − 1957 {
+ − 1958 Lisp_Object replacement = get_char_table (oc, ctable);
+ − 1959 retry2:
+ − 1960 if (CHAR_OR_CHAR_INTP (replacement))
+ − 1961 {
+ − 1962 Emchar nc = XCHAR_OR_CHAR_INT (replacement);
+ − 1963 if (nc != oc)
+ − 1964 {
+ − 1965 buffer_replace_char (buf, pos, nc, 0, 0);
+ − 1966 ++cnt;
+ − 1967 }
+ − 1968 }
+ − 1969 else if (STRINGP (replacement))
+ − 1970 {
+ − 1971 Charcount incr = XSTRING_CHAR_LENGTH (replacement) - 1;
+ − 1972 buffer_delete_range (buf, pos, pos + 1, 0);
+ − 1973 buffer_insert_lisp_string_1 (buf, pos, replacement, 0);
+ − 1974 pos += incr, stop += incr;
+ − 1975 ++cnt;
+ − 1976 }
+ − 1977 else if (!NILP (replacement))
+ − 1978 {
+ − 1979 replacement = wrong_type_argument (Qchar_or_string_p, replacement);
+ − 1980 goto retry2;
+ − 1981 }
+ − 1982 }
+ − 1983 }
+ − 1984 else
+ − 1985 dead_wrong_type_argument (Qstringp, table);
+ − 1986 end_multiple_change (buf, mc_count);
+ − 1987
+ − 1988 return make_int (cnt);
+ − 1989 }
+ − 1990
+ − 1991 DEFUN ("delete-region", Fdelete_region, 2, 3, "r", /*
+ − 1992 Delete the text between point and mark.
444
+ − 1993 When called from a program, expects two arguments START and END
+ − 1994 \(integers or markers) specifying the stretch to be deleted.
+ − 1995 If optional third arg BUFFER is nil, the current buffer is assumed.
428
+ − 1996 */
444
+ − 1997 (start, end, buffer))
428
+ − 1998 {
+ − 1999 /* This function can GC */
444
+ − 2000 Bufpos bp_start, bp_end;
428
+ − 2001 struct buffer *buf = decode_buffer (buffer, 1);
+ − 2002
444
+ − 2003 get_buffer_range_char (buf, start, end, &bp_start, &bp_end, 0);
+ − 2004 buffer_delete_range (buf, bp_start, bp_end, 0);
428
+ − 2005 return Qnil;
+ − 2006 }
+ − 2007
+ − 2008 void
+ − 2009 widen_buffer (struct buffer *b, int no_clip)
+ − 2010 {
+ − 2011 if (BUF_BEGV (b) != BUF_BEG (b))
+ − 2012 {
+ − 2013 clip_changed = 1;
+ − 2014 SET_BOTH_BUF_BEGV (b, BUF_BEG (b), BI_BUF_BEG (b));
+ − 2015 }
+ − 2016 if (BUF_ZV (b) != BUF_Z (b))
+ − 2017 {
+ − 2018 clip_changed = 1;
+ − 2019 SET_BOTH_BUF_ZV (b, BUF_Z (b), BI_BUF_Z (b));
+ − 2020 }
+ − 2021 if (clip_changed)
+ − 2022 {
+ − 2023 if (!no_clip)
+ − 2024 MARK_CLIP_CHANGED;
+ − 2025 /* Changing the buffer bounds invalidates any recorded current
+ − 2026 column. */
+ − 2027 invalidate_current_column ();
+ − 2028 narrow_line_number_cache (b);
+ − 2029 }
+ − 2030 }
+ − 2031
+ − 2032 DEFUN ("widen", Fwiden, 0, 1, "", /*
+ − 2033 Remove restrictions (narrowing) from BUFFER.
+ − 2034 This allows the buffer's full text to be seen and edited.
+ − 2035 If BUFFER is nil, the current buffer is assumed.
+ − 2036 */
+ − 2037 (buffer))
+ − 2038 {
+ − 2039 struct buffer *b = decode_buffer (buffer, 1);
+ − 2040 widen_buffer (b, 0);
+ − 2041 return Qnil;
+ − 2042 }
+ − 2043
+ − 2044 DEFUN ("narrow-to-region", Fnarrow_to_region, 2, 3, "r", /*
+ − 2045 Restrict editing in BUFFER to the current region.
+ − 2046 The rest of the text becomes temporarily invisible and untouchable
+ − 2047 but is not deleted; if you save the buffer in a file, the invisible
+ − 2048 text is included in the file. \\[widen] makes all visible again.
+ − 2049 If BUFFER is nil, the current buffer is assumed.
+ − 2050 See also `save-restriction'.
+ − 2051
+ − 2052 When calling from a program, pass two arguments; positions (integers
+ − 2053 or markers) bounding the text that should remain visible.
+ − 2054 */
444
+ − 2055 (start, end, buffer))
428
+ − 2056 {
444
+ − 2057 Bufpos bp_start, bp_end;
428
+ − 2058 struct buffer *buf = decode_buffer (buffer, 1);
+ − 2059 Bytind bi_start, bi_end;
+ − 2060
444
+ − 2061 get_buffer_range_char (buf, start, end, &bp_start, &bp_end,
+ − 2062 GB_ALLOW_PAST_ACCESSIBLE);
+ − 2063 bi_start = bufpos_to_bytind (buf, bp_start);
+ − 2064 bi_end = bufpos_to_bytind (buf, bp_end);
428
+ − 2065
444
+ − 2066 SET_BOTH_BUF_BEGV (buf, bp_start, bi_start);
+ − 2067 SET_BOTH_BUF_ZV (buf, bp_end, bi_end);
+ − 2068 if (BUF_PT (buf) < bp_start)
+ − 2069 BUF_SET_PT (buf, bp_start);
+ − 2070 if (BUF_PT (buf) > bp_end)
+ − 2071 BUF_SET_PT (buf, bp_end);
428
+ − 2072 MARK_CLIP_CHANGED;
+ − 2073 /* Changing the buffer bounds invalidates any recorded current column. */
+ − 2074 invalidate_current_column ();
+ − 2075 narrow_line_number_cache (buf);
+ − 2076 return Qnil;
+ − 2077 }
+ − 2078
+ − 2079 Lisp_Object
+ − 2080 save_restriction_save (void)
+ − 2081 {
+ − 2082 Lisp_Object bottom, top;
+ − 2083 /* Note: I tried using markers here, but it does not win
+ − 2084 because insertion at the end of the saved region
+ − 2085 does not advance mh and is considered "outside" the saved region. */
+ − 2086 bottom = make_int (BUF_BEGV (current_buffer) - BUF_BEG (current_buffer));
+ − 2087 top = make_int (BUF_Z (current_buffer) - BUF_ZV (current_buffer));
+ − 2088
+ − 2089 return noseeum_cons (Fcurrent_buffer (), noseeum_cons (bottom, top));
+ − 2090 }
+ − 2091
+ − 2092 Lisp_Object
+ − 2093 save_restriction_restore (Lisp_Object data)
+ − 2094 {
+ − 2095 struct buffer *buf;
+ − 2096 Charcount newhead, newtail;
+ − 2097 Lisp_Object tem;
+ − 2098 int local_clip_changed = 0;
+ − 2099
+ − 2100 buf = XBUFFER (XCAR (data));
+ − 2101 if (!BUFFER_LIVE_P (buf))
+ − 2102 {
+ − 2103 /* someone could have killed the buffer in the meantime ... */
+ − 2104 free_cons (XCONS (XCDR (data)));
+ − 2105 free_cons (XCONS (data));
+ − 2106 return Qnil;
+ − 2107 }
+ − 2108 tem = XCDR (data);
+ − 2109 newhead = XINT (XCAR (tem));
+ − 2110 newtail = XINT (XCDR (tem));
+ − 2111
+ − 2112 free_cons (XCONS (XCDR (data)));
+ − 2113 free_cons (XCONS (data));
+ − 2114
+ − 2115 if (newhead + newtail > BUF_Z (buf) - BUF_BEG (buf))
+ − 2116 {
+ − 2117 newhead = 0;
+ − 2118 newtail = 0;
+ − 2119 }
+ − 2120
+ − 2121 {
+ − 2122 Bufpos start, end;
+ − 2123 Bytind bi_start, bi_end;
+ − 2124
+ − 2125 start = BUF_BEG (buf) + newhead;
+ − 2126 end = BUF_Z (buf) - newtail;
+ − 2127
+ − 2128 bi_start = bufpos_to_bytind (buf, start);
+ − 2129 bi_end = bufpos_to_bytind (buf, end);
+ − 2130
+ − 2131 if (BUF_BEGV (buf) != start)
+ − 2132 {
+ − 2133 local_clip_changed = 1;
+ − 2134 SET_BOTH_BUF_BEGV (buf, start, bi_start);
+ − 2135 narrow_line_number_cache (buf);
+ − 2136 }
+ − 2137 if (BUF_ZV (buf) != end)
+ − 2138 {
+ − 2139 local_clip_changed = 1;
+ − 2140 SET_BOTH_BUF_ZV (buf, end, bi_end);
+ − 2141 }
+ − 2142 }
+ − 2143 if (local_clip_changed)
+ − 2144 MARK_CLIP_CHANGED;
+ − 2145
+ − 2146 /* If point is outside the new visible range, move it inside. */
+ − 2147 BUF_SET_PT (buf,
+ − 2148 bufpos_clip_to_bounds (BUF_BEGV (buf),
+ − 2149 BUF_PT (buf),
+ − 2150 BUF_ZV (buf)));
+ − 2151
+ − 2152 return Qnil;
+ − 2153 }
+ − 2154
+ − 2155 DEFUN ("save-restriction", Fsave_restriction, 0, UNEVALLED, 0, /*
+ − 2156 Execute BODY, saving and restoring current buffer's restrictions.
+ − 2157 The buffer's restrictions make parts of the beginning and end invisible.
+ − 2158 \(They are set up with `narrow-to-region' and eliminated with `widen'.)
+ − 2159 This special form, `save-restriction', saves the current buffer's restrictions
+ − 2160 when it is entered, and restores them when it is exited.
+ − 2161 So any `narrow-to-region' within BODY lasts only until the end of the form.
+ − 2162 The old restrictions settings are restored
+ − 2163 even in case of abnormal exit (throw or error).
+ − 2164
+ − 2165 The value returned is the value of the last form in BODY.
+ − 2166
+ − 2167 `save-restriction' can get confused if, within the BODY, you widen
+ − 2168 and then make changes outside the area within the saved restrictions.
+ − 2169
+ − 2170 Note: if you are using both `save-excursion' and `save-restriction',
+ − 2171 use `save-excursion' outermost:
+ − 2172 (save-excursion (save-restriction ...))
+ − 2173 */
+ − 2174 (body))
+ − 2175 {
+ − 2176 /* This function can GC */
+ − 2177 int speccount = specpdl_depth ();
+ − 2178
+ − 2179 record_unwind_protect (save_restriction_restore, save_restriction_save ());
+ − 2180
+ − 2181 return unbind_to (speccount, Fprogn (body));
+ − 2182 }
+ − 2183
+ − 2184
+ − 2185 DEFUN ("format", Fformat, 1, MANY, 0, /*
+ − 2186 Format a string out of a control-string and arguments.
+ − 2187 The first argument is a control string.
+ − 2188 The other arguments are substituted into it to make the result, a string.
+ − 2189 It may contain %-sequences meaning to substitute the next argument.
+ − 2190 %s means print all objects as-is, using `princ'.
+ − 2191 %S means print all objects as s-expressions, using `prin1'.
+ − 2192 %d or %i means print as an integer in decimal (%o octal, %x lowercase hex,
+ − 2193 %X uppercase hex).
+ − 2194 %c means print as a single character.
+ − 2195 %f means print as a floating-point number in fixed notation (e.g. 785.200).
+ − 2196 %e or %E means print as a floating-point number in scientific notation
+ − 2197 (e.g. 7.85200e+03).
+ − 2198 %g or %G means print as a floating-point number in "pretty format";
+ − 2199 depending on the number, either %f or %e/%E format will be used, and
+ − 2200 trailing zeroes are removed from the fractional part.
+ − 2201 The argument used for all but %s and %S must be a number. It will be
+ − 2202 converted to an integer or a floating-point number as necessary.
+ − 2203
+ − 2204 %$ means reposition to read a specific numbered argument; for example,
+ − 2205 %3$s would apply the `%s' to the third argument after the control string,
+ − 2206 and the next format directive would use the fourth argument, the
+ − 2207 following one the fifth argument, etc. (There must be a positive integer
+ − 2208 between the % and the $).
+ − 2209 Zero or more of the flag characters `-', `+', ` ', `0', and `#' may be
+ − 2210 specified between the optional repositioning spec and the conversion
+ − 2211 character; see below.
+ − 2212 An optional minimum field width may be specified after any flag characters
+ − 2213 and before the conversion character; it specifies the minimum number of
+ − 2214 characters that the converted argument will take up. Padding will be
+ − 2215 added on the left (or on the right, if the `-' flag is specified), as
+ − 2216 necessary. Padding is done with spaces, or with zeroes if the `0' flag
+ − 2217 is specified.
+ − 2218 If the field width is specified as `*', the field width is assumed to have
+ − 2219 been specified as an argument. Any repositioning specification that
+ − 2220 would normally specify the argument to be converted will now specify
+ − 2221 where to find this field width argument, not where to find the argument
+ − 2222 to be converted. If there is no repositioning specification, the normal
+ − 2223 next argument is used. The argument to be converted will be the next
+ − 2224 argument after the field width argument unless the precision is also
+ − 2225 specified as `*' (see below).
+ − 2226
+ − 2227 An optional period character and precision may be specified after any
+ − 2228 minimum field width. It specifies the minimum number of digits to
+ − 2229 appear in %d, %i, %o, %x, and %X conversions (the number is padded
+ − 2230 on the left with zeroes as necessary); the number of digits printed
+ − 2231 after the decimal point for %f, %e, and %E conversions; the number
+ − 2232 of significant digits printed in %g and %G conversions; and the
+ − 2233 maximum number of non-padding characters printed in %s and %S
+ − 2234 conversions. The default precision for floating-point conversions
+ − 2235 is six.
+ − 2236 If the precision is specified as `*', the precision is assumed to have been
+ − 2237 specified as an argument. The argument used will be the next argument
+ − 2238 after the field width argument, if any. If the field width was not
+ − 2239 specified as an argument, any repositioning specification that would
+ − 2240 normally specify the argument to be converted will now specify where to
+ − 2241 find the precision argument. If there is no repositioning specification,
+ − 2242 the normal next argument is used.
+ − 2243
+ − 2244 The ` ' and `+' flags mean prefix non-negative numbers with a space or
+ − 2245 plus sign, respectively.
+ − 2246 The `#' flag means print numbers in an alternate, more verbose format:
+ − 2247 octal numbers begin with zero; hex numbers begin with a 0x or 0X;
+ − 2248 a decimal point is printed in %f, %e, and %E conversions even if no
+ − 2249 numbers are printed after it; and trailing zeroes are not omitted in
+ − 2250 %g and %G conversions.
+ − 2251
+ − 2252 Use %% to put a single % into the output.
+ − 2253 */
+ − 2254 (int nargs, Lisp_Object *args))
+ − 2255 {
+ − 2256 /* It should not be necessary to GCPRO ARGS, because
+ − 2257 the caller in the interpreter should take care of that. */
+ − 2258
+ − 2259 CHECK_STRING (args[0]);
+ − 2260 return emacs_doprnt_string_lisp (0, args[0], 0, nargs - 1, args + 1);
+ − 2261 }
+ − 2262
+ − 2263
+ − 2264 DEFUN ("char-equal", Fchar_equal, 2, 3, 0, /*
+ − 2265 Return t if two characters match, optionally ignoring case.
+ − 2266 Both arguments must be characters (i.e. NOT integers).
+ − 2267 Case is ignored if `case-fold-search' is non-nil in BUFFER.
+ − 2268 If BUFFER is nil, the current buffer is assumed.
+ − 2269 */
444
+ − 2270 (character1, character2, buffer))
428
+ − 2271 {
+ − 2272 Emchar x1, x2;
+ − 2273 struct buffer *b = decode_buffer (buffer, 1);
+ − 2274
444
+ − 2275 CHECK_CHAR_COERCE_INT (character1);
+ − 2276 CHECK_CHAR_COERCE_INT (character2);
+ − 2277 x1 = XCHAR (character1);
+ − 2278 x2 = XCHAR (character2);
428
+ − 2279
+ − 2280 return (!NILP (b->case_fold_search)
+ − 2281 ? DOWNCASE (b, x1) == DOWNCASE (b, x2)
+ − 2282 : x1 == x2)
+ − 2283 ? Qt : Qnil;
+ − 2284 }
+ − 2285
434
+ − 2286 DEFUN ("char=", Fchar_Equal, 2, 2, 0, /*
428
+ − 2287 Return t if two characters match, case is significant.
+ − 2288 Both arguments must be characters (i.e. NOT integers).
+ − 2289 */
444
+ − 2290 (character1, character2))
428
+ − 2291 {
444
+ − 2292 CHECK_CHAR_COERCE_INT (character1);
+ − 2293 CHECK_CHAR_COERCE_INT (character2);
428
+ − 2294
444
+ − 2295 return EQ (character1, character2) ? Qt : Qnil;
428
+ − 2296 }
+ − 2297
+ − 2298 #if 0 /* Undebugged FSFmacs code */
+ − 2299 /* Transpose the markers in two regions of the current buffer, and
+ − 2300 adjust the ones between them if necessary (i.e.: if the regions
+ − 2301 differ in size).
+ − 2302
+ − 2303 Traverses the entire marker list of the buffer to do so, adding an
+ − 2304 appropriate amount to some, subtracting from some, and leaving the
+ − 2305 rest untouched. Most of this is copied from adjust_markers in insdel.c.
+ − 2306
+ − 2307 It's the caller's job to see that (start1 <= end1 <= start2 <= end2). */
+ − 2308
+ − 2309 void
+ − 2310 transpose_markers (Bufpos start1, Bufpos end1, Bufpos start2, Bufpos end2)
+ − 2311 {
+ − 2312 Charcount amt1, amt2, diff;
+ − 2313 Lisp_Object marker;
+ − 2314 struct buffer *buf = current_buffer;
+ − 2315
+ − 2316 /* Update point as if it were a marker. */
+ − 2317 if (BUF_PT (buf) < start1)
+ − 2318 ;
+ − 2319 else if (BUF_PT (buf) < end1)
+ − 2320 BUF_SET_PT (buf, BUF_PT (buf) + (end2 - end1));
+ − 2321 else if (BUF_PT (buf) < start2)
+ − 2322 BUF_SET_PT (buf, BUF_PT (buf) + (end2 - start2) - (end1 - start1));
+ − 2323 else if (BUF_PT (buf) < end2)
+ − 2324 BUF_SET_PT (buf, BUF_PT (buf) - (start2 - start1));
+ − 2325
+ − 2326 /* We used to adjust the endpoints here to account for the gap, but that
+ − 2327 isn't good enough. Even if we assume the caller has tried to move the
+ − 2328 gap out of our way, it might still be at start1 exactly, for example;
+ − 2329 and that places it `inside' the interval, for our purposes. The amount
+ − 2330 of adjustment is nontrivial if there's a `denormalized' marker whose
+ − 2331 position is between GPT and GPT + GAP_SIZE, so it's simpler to leave
+ − 2332 the dirty work to Fmarker_position, below. */
+ − 2333
+ − 2334 /* The difference between the region's lengths */
+ − 2335 diff = (end2 - start2) - (end1 - start1);
+ − 2336
+ − 2337 /* For shifting each marker in a region by the length of the other
+ − 2338 * region plus the distance between the regions.
+ − 2339 */
+ − 2340 amt1 = (end2 - start2) + (start2 - end1);
+ − 2341 amt2 = (end1 - start1) + (start2 - end1);
+ − 2342
+ − 2343 for (marker = BUF_MARKERS (buf); !NILP (marker);
+ − 2344 marker = XMARKER (marker)->chain)
+ − 2345 {
+ − 2346 Bufpos mpos = marker_position (marker);
+ − 2347 if (mpos >= start1 && mpos < end2)
+ − 2348 {
+ − 2349 if (mpos < end1)
+ − 2350 mpos += amt1;
+ − 2351 else if (mpos < start2)
+ − 2352 mpos += diff;
+ − 2353 else
+ − 2354 mpos -= amt2;
+ − 2355 set_marker_position (marker, mpos);
+ − 2356 }
+ − 2357 }
+ − 2358 }
+ − 2359
+ − 2360 #endif /* 0 */
+ − 2361
+ − 2362 DEFUN ("transpose-regions", Ftranspose_regions, 4, 5, 0, /*
+ − 2363 Transpose region START1 to END1 with START2 to END2.
+ − 2364 The regions may not be overlapping, because the size of the buffer is
+ − 2365 never changed in a transposition.
+ − 2366
444
+ − 2367 Optional fifth arg LEAVE-MARKERS, if non-nil, means don't transpose
428
+ − 2368 any markers that happen to be located in the regions. (#### BUG: currently
444
+ − 2369 this function always acts as if LEAVE-MARKERS is non-nil.)
428
+ − 2370
+ − 2371 Transposing beyond buffer boundaries is an error.
+ − 2372 */
444
+ − 2373 (start1, end1, start2, end2, leave_markers))
428
+ − 2374 {
444
+ − 2375 Bufpos startr1, endr1, startr2, endr2;
428
+ − 2376 Charcount len1, len2;
+ − 2377 Lisp_Object string1, string2;
+ − 2378 struct buffer *buf = current_buffer;
+ − 2379
444
+ − 2380 get_buffer_range_char (buf, start1, end1, &startr1, &endr1, 0);
+ − 2381 get_buffer_range_char (buf, start2, end2, &startr2, &endr2, 0);
428
+ − 2382
444
+ − 2383 len1 = endr1 - startr1;
+ − 2384 len2 = endr2 - startr2;
428
+ − 2385
444
+ − 2386 if (startr2 < endr1)
563
+ − 2387 invalid_argument ("transposed regions not properly ordered", Qunbound);
444
+ − 2388 else if (startr1 == endr1 || startr2 == endr2)
563
+ − 2389 invalid_argument ("transposed region may not be of length 0", Qunbound);
428
+ − 2390
444
+ − 2391 string1 = make_string_from_buffer (buf, startr1, len1);
+ − 2392 string2 = make_string_from_buffer (buf, startr2, len2);
+ − 2393 buffer_delete_range (buf, startr2, endr2, 0);
+ − 2394 buffer_insert_lisp_string_1 (buf, startr2, string1, 0);
+ − 2395 buffer_delete_range (buf, startr1, endr1, 0);
+ − 2396 buffer_insert_lisp_string_1 (buf, startr1, string2, 0);
428
+ − 2397
+ − 2398 /* In FSFmacs there is a whole bunch of really ugly code here
+ − 2399 to attempt to transpose the regions without using up any
+ − 2400 extra memory. Although the intent may be good, the result
+ − 2401 was highly bogus. */
+ − 2402
+ − 2403 return Qnil;
+ − 2404 }
+ − 2405
+ − 2406
+ − 2407 /************************************************************************/
+ − 2408 /* initialization */
+ − 2409 /************************************************************************/
+ − 2410
+ − 2411 void
+ − 2412 syms_of_editfns (void)
+ − 2413 {
563
+ − 2414 DEFSYMBOL (Qpoint);
+ − 2415 DEFSYMBOL (Qmark);
+ − 2416 DEFSYMBOL (Qregion_beginning);
+ − 2417 DEFSYMBOL (Qregion_end);
+ − 2418 DEFSYMBOL (Qformat);
+ − 2419 DEFSYMBOL (Quser_files_and_directories);
428
+ − 2420
+ − 2421 DEFSUBR (Fchar_equal);
+ − 2422 DEFSUBR (Fchar_Equal);
+ − 2423 DEFSUBR (Fgoto_char);
+ − 2424 DEFSUBR (Fstring_to_char);
+ − 2425 DEFSUBR (Fchar_to_string);
+ − 2426 DEFSUBR (Fbuffer_substring);
+ − 2427 DEFSUBR (Fbuffer_substring_no_properties);
+ − 2428
+ − 2429 DEFSUBR (Fpoint_marker);
+ − 2430 DEFSUBR (Fmark_marker);
+ − 2431 DEFSUBR (Fpoint);
+ − 2432 DEFSUBR (Fregion_beginning);
+ − 2433 DEFSUBR (Fregion_end);
+ − 2434 DEFSUBR (Fsave_excursion);
+ − 2435 DEFSUBR (Fsave_current_buffer);
+ − 2436
+ − 2437 DEFSUBR (Fbuffer_size);
+ − 2438 DEFSUBR (Fpoint_max);
+ − 2439 DEFSUBR (Fpoint_min);
+ − 2440 DEFSUBR (Fpoint_min_marker);
+ − 2441 DEFSUBR (Fpoint_max_marker);
+ − 2442
+ − 2443 DEFSUBR (Fbobp);
+ − 2444 DEFSUBR (Feobp);
+ − 2445 DEFSUBR (Fbolp);
+ − 2446 DEFSUBR (Feolp);
+ − 2447 DEFSUBR (Ffollowing_char);
+ − 2448 DEFSUBR (Fpreceding_char);
+ − 2449 DEFSUBR (Fchar_after);
+ − 2450 DEFSUBR (Fchar_before);
+ − 2451 DEFSUBR (Finsert);
+ − 2452 DEFSUBR (Finsert_string);
+ − 2453 DEFSUBR (Finsert_before_markers);
+ − 2454 DEFSUBR (Finsert_char);
+ − 2455
+ − 2456 DEFSUBR (Ftemp_directory);
+ − 2457 DEFSUBR (Fuser_login_name);
+ − 2458 DEFSUBR (Fuser_real_login_name);
+ − 2459 DEFSUBR (Fuser_uid);
+ − 2460 DEFSUBR (Fuser_real_uid);
+ − 2461 DEFSUBR (Fuser_full_name);
+ − 2462 DEFSUBR (Fuser_home_directory);
+ − 2463 DEFSUBR (Femacs_pid);
+ − 2464 DEFSUBR (Fcurrent_time);
+ − 2465 DEFSUBR (Fcurrent_process_time);
+ − 2466 DEFSUBR (Fformat_time_string);
+ − 2467 DEFSUBR (Fdecode_time);
+ − 2468 DEFSUBR (Fencode_time);
+ − 2469 DEFSUBR (Fcurrent_time_string);
+ − 2470 DEFSUBR (Fcurrent_time_zone);
+ − 2471 DEFSUBR (Fset_time_zone_rule);
+ − 2472 DEFSUBR (Fsystem_name);
+ − 2473 DEFSUBR (Fformat);
+ − 2474
+ − 2475 DEFSUBR (Finsert_buffer_substring);
+ − 2476 DEFSUBR (Fcompare_buffer_substrings);
+ − 2477 DEFSUBR (Fsubst_char_in_region);
+ − 2478 DEFSUBR (Ftranslate_region);
+ − 2479 DEFSUBR (Fdelete_region);
+ − 2480 DEFSUBR (Fwiden);
+ − 2481 DEFSUBR (Fnarrow_to_region);
+ − 2482 DEFSUBR (Fsave_restriction);
+ − 2483 DEFSUBR (Ftranspose_regions);
+ − 2484
563
+ − 2485 DEFSYMBOL (Qzmacs_update_region);
+ − 2486 DEFSYMBOL (Qzmacs_deactivate_region);
+ − 2487 DEFSYMBOL (Qzmacs_region_buffer);
428
+ − 2488 }
+ − 2489
+ − 2490 void
+ − 2491 vars_of_editfns (void)
+ − 2492 {
+ − 2493 staticpro (&Vsystem_name);
+ − 2494 #if 0
+ − 2495 staticpro (&Vuser_name);
+ − 2496 staticpro (&Vuser_real_name);
+ − 2497 #endif
+ − 2498 DEFVAR_BOOL ("zmacs-regions", &zmacs_regions /*
+ − 2499 *Whether LISPM-style active regions should be used.
+ − 2500 This means that commands which operate on the region (the area between the
+ − 2501 point and the mark) will only work while the region is in the ``active''
+ − 2502 state, which is indicated by highlighting. Executing most commands causes
+ − 2503 the region to not be in the active state, so (for example) \\[kill-region] will only
+ − 2504 work immediately after activating the region.
+ − 2505
+ − 2506 More specifically:
+ − 2507
+ − 2508 - Commands which operate on the region only work if the region is active.
+ − 2509 - Only a very small set of commands cause the region to become active:
444
+ − 2510 Those commands whose semantics are to mark an area, like `mark-defun'.
428
+ − 2511 - The region is deactivated after each command that is executed, except that:
+ − 2512 - "Motion" commands do not change whether the region is active or not.
+ − 2513
+ − 2514 set-mark-command (C-SPC) pushes a mark and activates the region. Moving the
+ − 2515 cursor with normal motion commands (C-n, C-p, etc) will cause the region
+ − 2516 between point and the recently-pushed mark to be highlighted. It will
+ − 2517 remain highlighted until some non-motion command is executed.
+ − 2518
+ − 2519 exchange-point-and-mark (\\[exchange-point-and-mark]) activates the region. So if you mark a
+ − 2520 region and execute a command that operates on it, you can reactivate the
+ − 2521 same region with \\[exchange-point-and-mark] (or perhaps \\[exchange-point-and-mark] \\[exchange-point-and-mark]) to operate on it
+ − 2522 again.
+ − 2523
+ − 2524 Generally, commands which push marks as a means of navigation (like
+ − 2525 beginning-of-buffer and end-of-buffer (M-< and M->)) do not activate the
+ − 2526 region. But commands which push marks as a means of marking an area of
+ − 2527 text (like mark-defun (\\[mark-defun]), mark-word (\\[mark-word]) or mark-whole-buffer (\\[mark-whole-buffer]))
+ − 2528 do activate the region.
+ − 2529
+ − 2530 The way the command loop actually works with regard to deactivating the
+ − 2531 region is as follows:
+ − 2532
+ − 2533 - If the variable `zmacs-region-stays' has been set to t during the command
+ − 2534 just executed, the region is left alone (this is how the motion commands
+ − 2535 make the region stay around; see the `_' flag in the `interactive'
+ − 2536 specification). `zmacs-region-stays' is reset to nil before each command
+ − 2537 is executed.
+ − 2538 - If the function `zmacs-activate-region' has been called during the command
+ − 2539 just executed, the region is left alone. Very few functions should
+ − 2540 actually call this function.
+ − 2541 - Otherwise, if the region is active, the region is deactivated and
+ − 2542 the `zmacs-deactivate-region-hook' is called.
+ − 2543 */ );
+ − 2544 /* Zmacs style active regions are now ON by default */
+ − 2545 zmacs_regions = 1;
+ − 2546
+ − 2547 DEFVAR_BOOL ("zmacs-region-active-p", &zmacs_region_active_p /*
+ − 2548 Do not alter this. It is for internal use only.
+ − 2549 */ );
+ − 2550 zmacs_region_active_p = 0;
+ − 2551
+ − 2552 DEFVAR_BOOL ("zmacs-region-stays", &zmacs_region_stays /*
+ − 2553 Whether the current command will deactivate the region.
+ − 2554 Commands which do not wish to affect whether the region is currently
+ − 2555 highlighted should set this to t. Normally, the region is turned off after
+ − 2556 executing each command that did not explicitly turn it on with the function
+ − 2557 zmacs-activate-region. Setting this to true lets a command be non-intrusive.
+ − 2558 See the variable `zmacs-regions'.
+ − 2559
+ − 2560 The same effect can be achieved using the `_' interactive specification.
442
+ − 2561
+ − 2562 `zmacs-region-stays' is reset to nil before each command is executed.
428
+ − 2563 */ );
+ − 2564 zmacs_region_stays = 0;
+ − 2565
+ − 2566 DEFVAR_BOOL ("atomic-extent-goto-char-p", &atomic_extent_goto_char_p /*
+ − 2567 Do not use this -- it will be going away soon.
+ − 2568 Indicates if `goto-char' has just been run. This information is allegedly
+ − 2569 needed to get the desired behavior for atomic extents and unfortunately
+ − 2570 is not available by any other means.
+ − 2571 */ );
+ − 2572 atomic_extent_goto_char_p = 0;
+ − 2573 #ifdef AMPERSAND_FULL_NAME
+ − 2574 Fprovide(intern("ampersand-full-name"));
+ − 2575 #endif
+ − 2576
+ − 2577 DEFVAR_LISP ("user-full-name", &Vuser_full_name /*
+ − 2578 *The name of the user.
+ − 2579 The function `user-full-name', which will return the value of this
+ − 2580 variable, when called without arguments.
+ − 2581 This is initialized to the value of the NAME environment variable.
+ − 2582 */ );
+ − 2583 /* Initialized at run-time. */
+ − 2584 Vuser_full_name = Qnil;
+ − 2585 }
