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.
771
+ − 4 Copyright (C) 1996, 2001, 2002 Ben Wing.
428
+ − 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
771
+ − 25 /* This file has been Mule-ized, June 2001. */
428
+ − 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"
800
+ − 33 #include "casetab.h"
+ − 34 #include "chartab.h"
428
+ − 35 #include "commands.h"
800
+ − 36 #include "device.h"
428
+ − 37 #include "events.h" /* for EVENTP */
+ − 38 #include "extents.h"
+ − 39 #include "frame.h"
+ − 40 #include "insdel.h"
800
+ − 41 #include "line-number.h"
428
+ − 42 #include "window.h"
+ − 43
800
+ − 44 #include "sysdep.h"
+ − 45 #include "sysdir.h"
+ − 46 #include "sysfile.h"
+ − 47 #include "sysproc.h" /* for qxe_getpid() */
+ − 48 #include "syspwd.h"
428
+ − 49 #include "systime.h"
+ − 50
+ − 51 /* Some static data, and a function to initialize it for each run */
+ − 52
+ − 53 Lisp_Object Vsystem_name; /* #### - I don't see why this should be */
+ − 54 /* static, either... --Stig */
+ − 55 #if 0 /* XEmacs - this is now dynamic */
+ − 56 /* if at some point it's deemed desirable to
+ − 57 use lisp variables here, then they can be
+ − 58 initialized to nil and then set to their
+ − 59 real values upon the first call to the
+ − 60 functions that generate them. --stig */
+ − 61 Lisp_Object Vuser_real_login_name; /* login name of current user ID */
+ − 62 Lisp_Object Vuser_login_name; /* user name from LOGNAME or USER. */
+ − 63 #endif
+ − 64
+ − 65 /* It's useful to be able to set this as user customization, so we'll
+ − 66 keep it. */
+ − 67 Lisp_Object Vuser_full_name;
+ − 68 EXFUN (Fuser_full_name, 1);
+ − 69
+ − 70 Lisp_Object Qformat;
+ − 71
+ − 72 Lisp_Object Qpoint, Qmark, Qregion_beginning, Qregion_end;
+ − 73
+ − 74 Lisp_Object Quser_files_and_directories;
+ − 75
+ − 76 /* This holds the value of `environ' produced by the previous
+ − 77 call to Fset_time_zone_rule, or 0 if Fset_time_zone_rule
+ − 78 has never been called. */
771
+ − 79 static Extbyte **environbuf;
428
+ − 80
+ − 81 void
+ − 82 init_editfns (void)
+ − 83 {
+ − 84 /* Only used in removed code below. */
867
+ − 85 Ibyte *p;
428
+ − 86
+ − 87 environbuf = 0;
+ − 88
+ − 89 /* Set up system_name even when dumping. */
+ − 90 init_system_name ();
+ − 91
+ − 92 #ifndef CANNOT_DUMP
+ − 93 if (!initialized)
+ − 94 return;
+ − 95 #endif
+ − 96
771
+ − 97 if ((p = egetenv ("NAME")))
428
+ − 98 /* I don't think it's the right thing to do the ampersand
+ − 99 modification on NAME. Not that it matters anymore... -hniksic */
771
+ − 100 Vuser_full_name = build_intstring (p);
428
+ − 101 else
+ − 102 Vuser_full_name = Fuser_full_name (Qnil);
+ − 103 }
+ − 104
+ − 105 DEFUN ("char-to-string", Fchar_to_string, 1, 1, 0, /*
444
+ − 106 Convert CHARACTER to a one-character string containing that character.
428
+ − 107 */
444
+ − 108 (character))
428
+ − 109 {
+ − 110 Bytecount len;
867
+ − 111 Ibyte str[MAX_ICHAR_LEN];
428
+ − 112
444
+ − 113 if (EVENTP (character))
428
+ − 114 {
444
+ − 115 Lisp_Object ch2 = Fevent_to_character (character, Qt, Qnil, Qnil);
428
+ − 116 if (NILP (ch2))
563
+ − 117 invalid_argument
+ − 118 ("character has no ASCII equivalent:", Fcopy_event (character, Qnil));
444
+ − 119 character = ch2;
428
+ − 120 }
+ − 121
444
+ − 122 CHECK_CHAR_COERCE_INT (character);
428
+ − 123
867
+ − 124 len = set_itext_ichar (str, XCHAR (character));
428
+ − 125 return make_string (str, len);
+ − 126 }
+ − 127
+ − 128 DEFUN ("string-to-char", Fstring_to_char, 1, 1, 0, /*
+ − 129 Convert arg STRING to a character, the first character of that string.
+ − 130 An empty string will return the constant `nil'.
+ − 131 */
444
+ − 132 (string))
428
+ − 133 {
444
+ − 134 CHECK_STRING (string);
428
+ − 135
793
+ − 136 if (XSTRING_LENGTH (string) != 0)
867
+ − 137 return make_char (string_ichar (string, 0));
428
+ − 138 else
+ − 139 /* This used to return Qzero. That is broken, broken, broken. */
+ − 140 /* It might be kinder to signal an error directly. -slb */
+ − 141 return Qnil;
+ − 142 }
+ − 143
+ − 144
+ − 145 static Lisp_Object
665
+ − 146 buildmark (Charbpos val, Lisp_Object buffer)
428
+ − 147 {
+ − 148 Lisp_Object mark = Fmake_marker ();
+ − 149 Fset_marker (mark, make_int (val), buffer);
+ − 150 return mark;
+ − 151 }
+ − 152
+ − 153 DEFUN ("point", Fpoint, 0, 1, 0, /*
+ − 154 Return value of point, as an integer.
+ − 155 Beginning of buffer is position (point-min).
+ − 156 If BUFFER is nil, the current buffer is assumed.
+ − 157 */
+ − 158 (buffer))
+ − 159 {
+ − 160 struct buffer *b = decode_buffer (buffer, 1);
+ − 161 return make_int (BUF_PT (b));
+ − 162 }
+ − 163
+ − 164 DEFUN ("point-marker", Fpoint_marker, 0, 2, 0, /*
+ − 165 Return value of point, as a marker object.
+ − 166 This marker is a copy; you may modify it with reckless abandon.
+ − 167 If optional argument DONT-COPY-P is non-nil, then it returns the real
+ − 168 point-marker; modifying the position of this marker will move point.
+ − 169 It is illegal to change the buffer of it, or make it point nowhere.
+ − 170 If BUFFER is nil, the current buffer is assumed.
+ − 171 */
+ − 172 (dont_copy_p, buffer))
+ − 173 {
+ − 174 struct buffer *b = decode_buffer (buffer, 1);
+ − 175 if (NILP (dont_copy_p))
+ − 176 return Fcopy_marker (b->point_marker, Qnil);
+ − 177 else
+ − 178 return b->point_marker;
+ − 179 }
+ − 180
+ − 181 /*
+ − 182 * Chuck says:
+ − 183 * There is no absolute way to determine if goto-char is the function
+ − 184 * being run. this-command doesn't work because it is often eval'd
+ − 185 * and this-command ends up set to eval-expression. So this flag gets
+ − 186 * added for now.
+ − 187 *
+ − 188 * Jamie thinks he's wrong, but we'll leave this in for now.
+ − 189 */
+ − 190 int atomic_extent_goto_char_p;
+ − 191
+ − 192 DEFUN ("goto-char", Fgoto_char, 1, 2, "NGoto char: ", /*
+ − 193 Set point to POSITION, a number or marker.
+ − 194 Beginning of buffer is position (point-min), end is (point-max).
+ − 195 If BUFFER is nil, the current buffer is assumed.
+ − 196 Return value of POSITION, as an integer.
+ − 197 */
+ − 198 (position, buffer))
+ − 199 {
+ − 200 struct buffer *b = decode_buffer (buffer, 1);
665
+ − 201 Charbpos n = get_buffer_pos_char (b, position, GB_COERCE_RANGE);
428
+ − 202 BUF_SET_PT (b, n);
+ − 203 atomic_extent_goto_char_p = 1;
+ − 204 return make_int (n);
+ − 205 }
+ − 206
+ − 207 static Lisp_Object
+ − 208 region_limit (int beginningp, struct buffer *b)
+ − 209 {
+ − 210 Lisp_Object m;
+ − 211
+ − 212 #if 0 /* FSFmacs */
+ − 213 if (!NILP (Vtransient_mark_mode) && NILP (Vmark_even_if_inactive)
+ − 214 && NILP (b->mark_active))
+ − 215 Fsignal (Qmark_inactive, Qnil);
+ − 216 #endif
+ − 217 m = Fmarker_position (b->mark);
563
+ − 218 if (NILP (m)) invalid_operation ("There is no region now", Qunbound);
428
+ − 219 if (!!(BUF_PT (b) < XINT (m)) == !!beginningp)
+ − 220 return make_int (BUF_PT (b));
+ − 221 else
+ − 222 return m;
+ − 223 }
+ − 224
+ − 225 DEFUN ("region-beginning", Fregion_beginning, 0, 1, 0, /*
+ − 226 Return position of beginning of region in BUFFER, as an integer.
+ − 227 If BUFFER is nil, the current buffer is assumed.
+ − 228 */
+ − 229 (buffer))
+ − 230 {
+ − 231 return region_limit (1, decode_buffer (buffer, 1));
+ − 232 }
+ − 233
+ − 234 DEFUN ("region-end", Fregion_end, 0, 1, 0, /*
+ − 235 Return position of end of region in BUFFER, as an integer.
+ − 236 If BUFFER is nil, the current buffer is assumed.
+ − 237 */
+ − 238 (buffer))
+ − 239 {
+ − 240 return region_limit (0, decode_buffer (buffer, 1));
+ − 241 }
+ − 242
+ − 243 /* Whether to use lispm-style active-regions */
+ − 244 int zmacs_regions;
+ − 245
+ − 246 /* Whether the zmacs region is active. This is not per-buffer because
+ − 247 there can be only one active region at a time. #### Now that the
+ − 248 zmacs region are not directly tied to the X selections this may not
+ − 249 necessarily have to be true. */
+ − 250 int zmacs_region_active_p;
+ − 251
+ − 252 int zmacs_region_stays;
+ − 253
+ − 254 Lisp_Object Qzmacs_update_region, Qzmacs_deactivate_region;
+ − 255 Lisp_Object Qzmacs_region_buffer;
+ − 256
+ − 257 void
+ − 258 zmacs_update_region (void)
+ − 259 {
+ − 260 /* This function can GC */
+ − 261 if (zmacs_region_active_p)
+ − 262 call0 (Qzmacs_update_region);
+ − 263 }
+ − 264
+ − 265 void
+ − 266 zmacs_deactivate_region (void)
+ − 267 {
+ − 268 /* This function can GC */
+ − 269 if (zmacs_region_active_p)
+ − 270 call0 (Qzmacs_deactivate_region);
+ − 271 }
+ − 272
+ − 273 Lisp_Object
+ − 274 zmacs_region_buffer (void)
+ − 275 {
+ − 276 if (zmacs_region_active_p)
+ − 277 return call0 (Qzmacs_region_buffer);
+ − 278 else
+ − 279 return Qnil;
+ − 280 }
+ − 281
+ − 282 DEFUN ("mark-marker", Fmark_marker, 0, 2, 0, /*
+ − 283 Return this buffer's mark, as a marker object.
+ − 284 If `zmacs-regions' is true, then this returns nil unless the region is
+ − 285 currently in the active (highlighted) state. If optional argument FORCE
+ − 286 is t, this returns the mark (if there is one) regardless of the zmacs-region
+ − 287 state. You should *generally* not use the mark unless the region is active,
+ − 288 if the user has expressed a preference for the zmacs-region model.
+ − 289 Watch out! Moving this marker changes the mark position.
+ − 290 If you set the marker not to point anywhere, the buffer will have no mark.
+ − 291 If BUFFER is nil, the current buffer is assumed.
+ − 292 */
+ − 293 (force, buffer))
+ − 294 {
+ − 295 struct buffer *b = decode_buffer (buffer, 1);
+ − 296 if (! zmacs_regions || zmacs_region_active_p || !NILP (force))
+ − 297 return b->mark;
+ − 298 return Qnil;
+ − 299 }
+ − 300
+ − 301
+ − 302 /* The saved object is a cons:
+ − 303
+ − 304 (COPY-OF-POINT-MARKER . COPY-OF-MARK)
+ − 305
+ − 306 We used to have another cons for a VISIBLE-P element, which was t
+ − 307 if `(eq (current-buffer) (window-buffer (selected-window)))' but it
+ − 308 was unused for a long time, so I removed it. --hniksic */
+ − 309 Lisp_Object
+ − 310 save_excursion_save (void)
+ − 311 {
+ − 312 struct buffer *b;
+ − 313
853
+ − 314 /* There was once a check for preparing_for_armageddon here, which
+ − 315 did nothing; perhaps a left-over from FSF Emacs. Obviously
+ − 316 incorrect. --ben */
428
+ − 317
800
+ − 318 #ifdef ERROR_CHECK_TEXT
428
+ − 319 assert (XINT (Fpoint (Qnil)) ==
+ − 320 XINT (Fmarker_position (Fpoint_marker (Qt, Qnil))));
+ − 321 #endif
+ − 322
+ − 323 b = current_buffer;
+ − 324
+ − 325 return noseeum_cons (noseeum_copy_marker (b->point_marker, Qnil),
+ − 326 noseeum_copy_marker (b->mark, Qnil));
+ − 327 }
+ − 328
+ − 329 Lisp_Object
+ − 330 save_excursion_restore (Lisp_Object info)
+ − 331 {
+ − 332 Lisp_Object buffer = Fmarker_buffer (XCAR (info));
+ − 333
+ − 334 /* If buffer being returned to is now deleted, avoid error --
+ − 335 otherwise could get error here while unwinding to top level and
+ − 336 crash. In that case, Fmarker_buffer returns nil now. */
+ − 337 if (!NILP (buffer))
+ − 338 {
+ − 339 struct buffer *buf = XBUFFER (buffer);
+ − 340 struct gcpro gcpro1;
+ − 341 GCPRO1 (info);
+ − 342 set_buffer_internal (buf);
+ − 343 Fgoto_char (XCAR (info), buffer);
+ − 344 Fset_marker (buf->mark, XCDR (info), buffer);
+ − 345
+ − 346 #if 0 /* We used to make the current buffer visible in the selected window
+ − 347 if that was true previously. That avoids some anomalies.
+ − 348 But it creates others, and it wasn't documented, and it is simpler
+ − 349 and cleaner never to alter the window/buffer connections. */
+ − 350 /* I'm certain some code somewhere depends on this behavior. --jwz */
+ − 351 /* Even if it did, it certainly doesn't matter anymore, because
+ − 352 this has been the behavior for countless XEmacs releases
+ − 353 now. --hniksic */
+ − 354 if (visible
+ − 355 && (current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)))
+ − 356 switch_to_buffer (Fcurrent_buffer (), Qnil);
+ − 357 #endif
+ − 358
+ − 359 UNGCPRO;
+ − 360 }
+ − 361
+ − 362 /* Free all the junk we allocated, so that a `save-excursion' comes
+ − 363 for free in terms of GC junk. */
+ − 364 free_marker (XMARKER (XCAR (info)));
+ − 365 free_marker (XMARKER (XCDR (info)));
853
+ − 366 free_cons (info);
428
+ − 367 return Qnil;
+ − 368 }
+ − 369
+ − 370 DEFUN ("save-excursion", Fsave_excursion, 0, UNEVALLED, 0, /*
+ − 371 Save point, mark, and current buffer; execute BODY; restore those things.
+ − 372 Executes BODY just like `progn'.
+ − 373 The values of point, mark and the current buffer are restored
+ − 374 even in case of abnormal exit (throw or error).
+ − 375 */
+ − 376 (args))
+ − 377 {
+ − 378 /* This function can GC */
+ − 379 int speccount = specpdl_depth ();
+ − 380
+ − 381 record_unwind_protect (save_excursion_restore, save_excursion_save ());
+ − 382
771
+ − 383 return unbind_to_1 (speccount, Fprogn (args));
428
+ − 384 }
+ − 385
+ − 386 Lisp_Object
+ − 387 save_current_buffer_restore (Lisp_Object buffer)
+ − 388 {
+ − 389 struct buffer *buf = XBUFFER (buffer);
+ − 390 /* Avoid signaling an error if the buffer is no longer alive. This
+ − 391 is for consistency with save-excursion. */
+ − 392 if (BUFFER_LIVE_P (buf))
+ − 393 set_buffer_internal (buf);
+ − 394 return Qnil;
+ − 395 }
+ − 396
+ − 397 DEFUN ("save-current-buffer", Fsave_current_buffer, 0, UNEVALLED, 0, /*
+ − 398 Save the current buffer; execute BODY; restore the current buffer.
+ − 399 Executes BODY just like `progn'.
+ − 400 */
+ − 401 (args))
+ − 402 {
+ − 403 /* This function can GC */
+ − 404 int speccount = specpdl_depth ();
+ − 405
+ − 406 record_unwind_protect (save_current_buffer_restore, Fcurrent_buffer ());
+ − 407
771
+ − 408 return unbind_to_1 (speccount, Fprogn (args));
428
+ − 409 }
+ − 410
+ − 411 DEFUN ("buffer-size", Fbuffer_size, 0, 1, 0, /*
+ − 412 Return the number of characters in BUFFER.
+ − 413 If BUFFER is nil, the current buffer is assumed.
+ − 414 */
+ − 415 (buffer))
+ − 416 {
+ − 417 struct buffer *b = decode_buffer (buffer, 1);
+ − 418 return make_int (BUF_SIZE (b));
+ − 419 }
+ − 420
+ − 421 DEFUN ("point-min", Fpoint_min, 0, 1, 0, /*
+ − 422 Return the minimum permissible value of point in BUFFER.
434
+ − 423 This is 1, unless narrowing (a buffer restriction)
+ − 424 is in effect, in which case it may be greater.
428
+ − 425 If BUFFER is nil, the current buffer is assumed.
+ − 426 */
+ − 427 (buffer))
+ − 428 {
+ − 429 struct buffer *b = decode_buffer (buffer, 1);
+ − 430 return make_int (BUF_BEGV (b));
+ − 431 }
+ − 432
+ − 433 DEFUN ("point-min-marker", Fpoint_min_marker, 0, 1, 0, /*
+ − 434 Return a marker to the minimum permissible value of point in BUFFER.
434
+ − 435 This is the beginning, unless narrowing (a buffer restriction)
+ − 436 is in effect, in which case it may be greater.
428
+ − 437 If BUFFER is nil, the current buffer is assumed.
+ − 438 */
+ − 439 (buffer))
+ − 440 {
+ − 441 struct buffer *b = decode_buffer (buffer, 1);
771
+ − 442 return buildmark (BUF_BEGV (b), wrap_buffer (b));
428
+ − 443 }
+ − 444
+ − 445 DEFUN ("point-max", Fpoint_max, 0, 1, 0, /*
+ − 446 Return the maximum permissible value of point in BUFFER.
+ − 447 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)
434
+ − 448 is in effect, in which case it may be less.
428
+ − 449 If BUFFER is nil, the current buffer is assumed.
+ − 450 */
+ − 451 (buffer))
+ − 452 {
+ − 453 struct buffer *b = decode_buffer (buffer, 1);
+ − 454 return make_int (BUF_ZV (b));
+ − 455 }
+ − 456
+ − 457 DEFUN ("point-max-marker", Fpoint_max_marker, 0, 1, 0, /*
434
+ − 458 Return a marker to the maximum permissible value of point in BUFFER.
428
+ − 459 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)
434
+ − 460 is in effect, in which case it may be less.
428
+ − 461 If BUFFER is nil, the current buffer is assumed.
+ − 462 */
+ − 463 (buffer))
+ − 464 {
+ − 465 struct buffer *b = decode_buffer (buffer, 1);
771
+ − 466 return buildmark (BUF_ZV (b), wrap_buffer (b));
428
+ − 467 }
+ − 468
+ − 469 DEFUN ("following-char", Ffollowing_char, 0, 1, 0, /*
+ − 470 Return the character following point.
+ − 471 At the end of the buffer or accessible region, return 0.
+ − 472 If BUFFER is nil, the current buffer is assumed.
+ − 473 */
+ − 474 (buffer))
+ − 475 {
+ − 476 struct buffer *b = decode_buffer (buffer, 1);
+ − 477 if (BUF_PT (b) >= BUF_ZV (b))
+ − 478 return Qzero; /* #### Gag me! */
+ − 479 else
+ − 480 return make_char (BUF_FETCH_CHAR (b, BUF_PT (b)));
+ − 481 }
+ − 482
+ − 483 DEFUN ("preceding-char", Fpreceding_char, 0, 1, 0, /*
+ − 484 Return the character preceding point.
+ − 485 At the beginning of the buffer or accessible region, return 0.
+ − 486 If BUFFER is nil, the current buffer is assumed.
+ − 487 */
+ − 488 (buffer))
+ − 489 {
+ − 490 struct buffer *b = decode_buffer (buffer, 1);
+ − 491 if (BUF_PT (b) <= BUF_BEGV (b))
+ − 492 return Qzero; /* #### Gag me! */
+ − 493 else
+ − 494 return make_char (BUF_FETCH_CHAR (b, BUF_PT (b) - 1));
+ − 495 }
+ − 496
+ − 497 DEFUN ("bobp", Fbobp, 0, 1, 0, /*
+ − 498 Return t if point is at the beginning of the buffer.
+ − 499 If the buffer is narrowed, this means the beginning of the narrowed part.
+ − 500 If BUFFER is nil, the current buffer is assumed.
+ − 501 */
+ − 502 (buffer))
+ − 503 {
+ − 504 struct buffer *b = decode_buffer (buffer, 1);
+ − 505 return BUF_PT (b) == BUF_BEGV (b) ? Qt : Qnil;
+ − 506 }
+ − 507
+ − 508 DEFUN ("eobp", Feobp, 0, 1, 0, /*
+ − 509 Return t if point is at the end of the buffer.
+ − 510 If the buffer is narrowed, this means the end of the narrowed part.
+ − 511 If BUFFER is nil, the current buffer is assumed.
+ − 512 */
+ − 513 (buffer))
+ − 514 {
+ − 515 struct buffer *b = decode_buffer (buffer, 1);
+ − 516 return BUF_PT (b) == BUF_ZV (b) ? Qt : Qnil;
+ − 517 }
+ − 518
+ − 519 int
665
+ − 520 beginning_of_line_p (struct buffer *b, Charbpos pt)
428
+ − 521 {
+ − 522 return pt <= BUF_BEGV (b) || BUF_FETCH_CHAR (b, pt - 1) == '\n';
+ − 523 }
+ − 524
+ − 525
+ − 526 DEFUN ("bolp", Fbolp, 0, 1, 0, /*
+ − 527 Return t if point is at the beginning of a line.
+ − 528 If BUFFER is nil, the current buffer is assumed.
+ − 529 */
+ − 530 (buffer))
+ − 531 {
+ − 532 struct buffer *b = decode_buffer (buffer, 1);
+ − 533 return beginning_of_line_p (b, BUF_PT (b)) ? Qt : Qnil;
+ − 534 }
+ − 535
+ − 536 DEFUN ("eolp", Feolp, 0, 1, 0, /*
+ − 537 Return t if point is at the end of a line.
+ − 538 `End of a line' includes point being at the end of the buffer.
+ − 539 If BUFFER is nil, the current buffer is assumed.
+ − 540 */
+ − 541 (buffer))
+ − 542 {
+ − 543 struct buffer *b = decode_buffer (buffer, 1);
+ − 544 return (BUF_PT (b) == BUF_ZV (b) || BUF_FETCH_CHAR (b, BUF_PT (b)) == '\n')
+ − 545 ? Qt : Qnil;
+ − 546 }
+ − 547
+ − 548 DEFUN ("char-after", Fchar_after, 0, 2, 0, /*
434
+ − 549 Return the character at position POS in BUFFER.
+ − 550 POS is an integer or a marker.
428
+ − 551 If POS is out of range, the value is nil.
434
+ − 552 if POS is nil, the value of point is assumed.
428
+ − 553 If BUFFER is nil, the current buffer is assumed.
+ − 554 */
+ − 555 (pos, buffer))
+ − 556 {
+ − 557 struct buffer *b = decode_buffer (buffer, 1);
665
+ − 558 Charbpos n = (NILP (pos) ? BUF_PT (b) :
428
+ − 559 get_buffer_pos_char (b, pos, GB_NO_ERROR_IF_BAD));
+ − 560
+ − 561 if (n < 0 || n == BUF_ZV (b))
+ − 562 return Qnil;
+ − 563 return make_char (BUF_FETCH_CHAR (b, n));
+ − 564 }
+ − 565
+ − 566 DEFUN ("char-before", Fchar_before, 0, 2, 0, /*
434
+ − 567 Return the character preceding position POS in BUFFER.
+ − 568 POS is an integer or a marker.
428
+ − 569 If POS is out of range, the value is nil.
434
+ − 570 if POS is nil, the value of point is assumed.
428
+ − 571 If BUFFER is nil, the current buffer is assumed.
+ − 572 */
+ − 573 (pos, buffer))
+ − 574 {
+ − 575 struct buffer *b = decode_buffer (buffer, 1);
665
+ − 576 Charbpos n = (NILP (pos) ? BUF_PT (b) :
434
+ − 577 get_buffer_pos_char (b, pos, GB_NO_ERROR_IF_BAD));
428
+ − 578
+ − 579 n--;
+ − 580
+ − 581 if (n < BUF_BEGV (b))
+ − 582 return Qnil;
+ − 583 return make_char (BUF_FETCH_CHAR (b, n));
+ − 584 }
+ − 585
+ − 586
+ − 587 DEFUN ("temp-directory", Ftemp_directory, 0, 0, 0, /*
+ − 588 Return the pathname to the directory to use for temporary files.
442
+ − 589 On MS Windows, this is obtained from the TEMP or TMP environment variables,
771
+ − 590 defaulting to c:\\ if they are both undefined.
444
+ − 591 On Unix it is obtained from TMPDIR, with /tmp as the default.
428
+ − 592 */
+ − 593 ())
+ − 594 {
867
+ − 595 Ibyte *tmpdir;
442
+ − 596 #if defined(WIN32_NATIVE)
771
+ − 597 tmpdir = egetenv ("TEMP");
428
+ − 598 if (!tmpdir)
771
+ − 599 tmpdir = egetenv ("TMP");
428
+ − 600 if (!tmpdir)
867
+ − 601 tmpdir = (Ibyte *) "c:\\";
442
+ − 602 #else /* WIN32_NATIVE */
771
+ − 603 tmpdir = egetenv ("TMPDIR");
428
+ − 604 if (!tmpdir)
442
+ − 605 {
+ − 606 struct stat st;
771
+ − 607 int myuid = getuid ();
867
+ − 608 Ibyte *login_name = user_login_name (NULL);
771
+ − 609 DECLARE_EISTRING (eipath);
867
+ − 610 Ibyte *path;
442
+ − 611
771
+ − 612 eicpy_c (eipath, "/tmp/");
+ − 613 eicat_rawz (eipath, login_name);
+ − 614 path = eidata (eipath);
+ − 615 if (qxe_lstat (path, &st) < 0 && errno == ENOENT)
+ − 616 qxe_mkdir (path, 0700); /* ignore retval -- checked next anyway. */
+ − 617 if (qxe_lstat (path, &st) == 0 && (int) st.st_uid == myuid
+ − 618 && S_ISDIR (st.st_mode))
+ − 619 tmpdir = path;
442
+ − 620 else
+ − 621 {
771
+ − 622 eicpy_rawz (eipath, egetenv ("HOME"));
+ − 623 eicat_c (eipath, "/tmp/");
+ − 624 path = eidata (eipath);
+ − 625 if (qxe_stat (path, &st) < 0 && errno == ENOENT)
442
+ − 626 {
+ − 627 int fd;
771
+ − 628 DECLARE_EISTRING (eiwarnpath);
+ − 629
+ − 630 qxe_mkdir (path, 0700); /* ignore retvals */
+ − 631 eicpy_ei (eiwarnpath, eipath);
+ − 632 eicat_c (eiwarnpath, ".created_by_xemacs");
+ − 633 if ((fd = qxe_open (eidata (eiwarnpath),
+ − 634 O_WRONLY | O_CREAT, 0644)) > 0)
442
+ − 635 {
771
+ − 636 retry_write (fd, "XEmacs created this directory because "
+ − 637 "/tmp/<yourname> was unavailable -- \n"
+ − 638 "Please check !\n", 89);
+ − 639 retry_close (fd);
442
+ − 640 }
+ − 641 }
771
+ − 642 if (qxe_stat (path, &st) == 0 && S_ISDIR (st.st_mode))
+ − 643 tmpdir = path;
442
+ − 644 else
867
+ − 645 tmpdir = (Ibyte *) "/tmp";
442
+ − 646 }
+ − 647 }
428
+ − 648 #endif
+ − 649
771
+ − 650 return build_intstring (tmpdir);
428
+ − 651 }
+ − 652
+ − 653 DEFUN ("user-login-name", Fuser_login_name, 0, 1, 0, /*
+ − 654 Return the name under which the user logged in, as a string.
+ − 655 This is based on the effective uid, not the real uid.
+ − 656 Also, if the environment variable LOGNAME or USER is set,
+ − 657 that determines the value of this function.
+ − 658 If the optional argument UID is present, then environment variables are
+ − 659 ignored and this function returns the login name for that UID, or nil.
+ − 660 */
+ − 661 (uid))
+ − 662 {
867
+ − 663 Ibyte *returned_name;
428
+ − 664 uid_t local_uid;
+ − 665
+ − 666 if (!NILP (uid))
+ − 667 {
+ − 668 CHECK_INT (uid);
+ − 669 local_uid = XINT (uid);
+ − 670 returned_name = user_login_name (&local_uid);
+ − 671 }
+ − 672 else
+ − 673 {
+ − 674 returned_name = user_login_name (NULL);
+ − 675 }
+ − 676 /* #### - I believe this should return nil instead of "unknown" when pw==0
+ − 677 pw=0 is indicated by a null return from user_login_name
+ − 678 */
771
+ − 679 return returned_name ? build_intstring (returned_name) : Qnil;
428
+ − 680 }
+ − 681
+ − 682 /* This function may be called from other C routines when a
+ − 683 character string representation of the user_login_name is
+ − 684 needed but a Lisp Object is not. The UID is passed by
+ − 685 reference. If UID == NULL, then the USER name
+ − 686 for the user running XEmacs will be returned. This
+ − 687 corresponds to a nil argument to Fuser_login_name.
771
+ − 688
793
+ − 689 WARNING: The string returned comes from the data of a Lisp string and
771
+ − 690 therefore will become garbage after the next GC.
428
+ − 691 */
867
+ − 692 Ibyte *
428
+ − 693 user_login_name (uid_t *uid)
+ − 694 {
+ − 695 /* uid == NULL to return name of this user */
+ − 696 if (uid != NULL)
+ − 697 {
771
+ − 698 struct passwd *pw = qxe_getpwuid (*uid);
867
+ − 699 return pw ? (Ibyte *) pw->pw_name : NULL;
428
+ − 700 }
+ − 701 else
+ − 702 {
+ − 703 /* #### - when euid != uid, then LOGNAME and USER are leftovers from the
+ − 704 old environment (I site observed behavior on sunos and linux), so the
+ − 705 environment variables should be disregarded in that case. --Stig */
867
+ − 706 Ibyte *user_name = egetenv ("LOGNAME");
428
+ − 707 if (!user_name)
771
+ − 708 user_name = egetenv (
442
+ − 709 #ifdef WIN32_NATIVE
428
+ − 710 "USERNAME" /* it's USERNAME on NT */
+ − 711 #else
+ − 712 "USER"
+ − 713 #endif
+ − 714 );
+ − 715 if (user_name)
771
+ − 716 return user_name;
428
+ − 717 else
+ − 718 {
771
+ − 719 struct passwd *pw = qxe_getpwuid (geteuid ());
442
+ − 720 #ifdef CYGWIN
428
+ − 721 /* Since the Cygwin environment may not have an /etc/passwd,
+ − 722 return "unknown" instead of the null if the username
+ − 723 cannot be determined.
+ − 724 */
593
+ − 725 /* !!#### fix up in my mule ws */
867
+ − 726 return (Ibyte *) (pw ? pw->pw_name : "unknown");
428
+ − 727 #else
+ − 728 /* For all but Cygwin return NULL (nil) */
+ − 729 return pw ? pw->pw_name : NULL;
+ − 730 #endif
+ − 731 }
+ − 732 }
+ − 733 }
+ − 734
+ − 735 DEFUN ("user-real-login-name", Fuser_real_login_name, 0, 0, 0, /*
+ − 736 Return the name of the user's real uid, as a string.
+ − 737 This ignores the environment variables LOGNAME and USER, so it differs from
+ − 738 `user-login-name' when running under `su'.
+ − 739 */
+ − 740 ())
+ − 741 {
771
+ − 742 struct passwd *pw = qxe_getpwuid (getuid ());
428
+ − 743 /* #### - I believe this should return nil instead of "unknown" when pw==0 */
+ − 744
793
+ − 745 return build_string (pw ? pw->pw_name : "unknown");
428
+ − 746 }
+ − 747
+ − 748 DEFUN ("user-uid", Fuser_uid, 0, 0, 0, /*
+ − 749 Return the effective uid of Emacs, as an integer.
+ − 750 */
+ − 751 ())
+ − 752 {
+ − 753 return make_int (geteuid ());
+ − 754 }
+ − 755
+ − 756 DEFUN ("user-real-uid", Fuser_real_uid, 0, 0, 0, /*
+ − 757 Return the real uid of Emacs, as an integer.
+ − 758 */
+ − 759 ())
+ − 760 {
+ − 761 return make_int (getuid ());
+ − 762 }
+ − 763
+ − 764 DEFUN ("user-full-name", Fuser_full_name, 0, 1, 0, /*
+ − 765 Return the full name of the user logged in, as a string.
+ − 766 If the optional argument USER is given, then the full name for that
+ − 767 user is returned, or nil. USER may be either a login name or a uid.
+ − 768
+ − 769 If USER is nil, and `user-full-name' contains a string, the
+ − 770 value of `user-full-name' is returned.
+ − 771 */
+ − 772 (user))
+ − 773 {
+ − 774 Lisp_Object user_name;
+ − 775 struct passwd *pw = NULL;
+ − 776 Lisp_Object tem;
867
+ − 777 const Ibyte *p, *q;
428
+ − 778
+ − 779 if (NILP (user) && STRINGP (Vuser_full_name))
+ − 780 return Vuser_full_name;
+ − 781
+ − 782 user_name = (STRINGP (user) ? user : Fuser_login_name (user));
+ − 783 if (!NILP (user_name)) /* nil when nonexistent UID passed as arg */
+ − 784 {
+ − 785 /* Fuck me. getpwnam() can call select() and (under IRIX at least)
+ − 786 things get wedged if a SIGIO arrives during this time. */
+ − 787 slow_down_interrupts ();
771
+ − 788 pw = qxe_getpwnam (XSTRING_DATA (user_name));
428
+ − 789 speed_up_interrupts ();
+ − 790 }
+ − 791
+ − 792 /* #### - Stig sez: this should return nil instead of "unknown" when pw==0 */
+ − 793 /* Ben sez: bad idea because it's likely to break something */
+ − 794 #ifndef AMPERSAND_FULL_NAME
867
+ − 795 p = (Ibyte *) (pw ? USER_FULL_NAME : "unknown"); /* don't gettext */
771
+ − 796 q = qxestrchr (p, ',');
428
+ − 797 #else
867
+ − 798 p = (Ibyte *) (pw ? USER_FULL_NAME : "unknown"); /* don't gettext */
771
+ − 799 q = qxestrchr (p, ',');
428
+ − 800 #endif
+ − 801 tem = ((!NILP (user) && !pw)
+ − 802 ? Qnil
814
+ − 803 : make_string (p, (q ? (Bytecount) (q - p) : qxestrlen (p))));
428
+ − 804
+ − 805 #ifdef AMPERSAND_FULL_NAME
+ − 806 if (!NILP (tem))
+ − 807 {
771
+ − 808 p = XSTRING_DATA (tem);
+ − 809 q = qxestrchr (p, '&');
428
+ − 810 /* Substitute the login name for the &, upcasing the first character. */
+ − 811 if (q)
+ − 812 {
771
+ − 813 DECLARE_EISTRING (r);
+ − 814 eicpy_raw (r, p, q - p);
+ − 815 eicat_lstr (r, user_name);
+ − 816 eisetch (r, q - p, UPCASE (0, eigetch (r, q - p)));
+ − 817 eicat_rawz (r, q + 1);
+ − 818 tem = eimake_string (r);
428
+ − 819 }
+ − 820 }
+ − 821 #endif /* AMPERSAND_FULL_NAME */
+ − 822
+ − 823 return tem;
+ − 824 }
+ − 825
867
+ − 826 static Ibyte *cached_home_directory;
428
+ − 827
+ − 828 void
+ − 829 uncache_home_directory (void)
+ − 830 {
771
+ − 831 if (cached_home_directory)
+ − 832 xfree (cached_home_directory);
+ − 833 cached_home_directory = NULL;
428
+ − 834 }
+ − 835
771
+ − 836 /* Returns the home directory */
867
+ − 837 Ibyte *
428
+ − 838 get_home_directory (void)
+ − 839 {
+ − 840 int output_home_warning = 0;
+ − 841
+ − 842 if (cached_home_directory == NULL)
+ − 843 {
771
+ − 844 cached_home_directory = egetenv ("HOME");
+ − 845 if (cached_home_directory)
+ − 846 cached_home_directory = qxestrdup (cached_home_directory);
+ − 847 else
428
+ − 848 {
771
+ − 849 #if defined (WIN32_NATIVE)
867
+ − 850 Ibyte *homedrive, *homepath;
428
+ − 851
771
+ − 852 if ((homedrive = egetenv ("HOMEDRIVE")) != NULL &&
+ − 853 (homepath = egetenv ("HOMEPATH")) != NULL)
428
+ − 854 {
+ − 855 cached_home_directory =
867
+ − 856 (Ibyte *) xmalloc (qxestrlen (homedrive) +
771
+ − 857 qxestrlen (homepath) + 1);
+ − 858 qxesprintf (cached_home_directory, "%s%s",
+ − 859 homedrive,
+ − 860 homepath);
428
+ − 861 }
+ − 862 else
+ − 863 {
867
+ − 864 cached_home_directory = qxestrdup ((Ibyte *) "C:\\");
428
+ − 865 output_home_warning = 1;
+ − 866 }
442
+ − 867 #else /* !WIN32_NATIVE */
428
+ − 868 /*
+ − 869 * Unix, typically.
+ − 870 * Using "/" isn't quite right, but what should we do?
+ − 871 * We probably should try to extract pw_dir from /etc/passwd,
+ − 872 * before falling back to this.
+ − 873 */
867
+ − 874 cached_home_directory = qxestrdup ((Ibyte *) "/");
428
+ − 875 output_home_warning = 1;
442
+ − 876 #endif /* !WIN32_NATIVE */
428
+ − 877 }
+ − 878 if (initialized && output_home_warning)
+ − 879 {
+ − 880 warn_when_safe (Quser_files_and_directories, Qwarning, "\n"
+ − 881 " XEmacs was unable to determine a good value for the user's $HOME\n"
+ − 882 " directory, and will be using the value:\n"
+ − 883 " %s\n"
+ − 884 " This is probably incorrect.",
+ − 885 cached_home_directory
+ − 886 );
+ − 887 }
+ − 888 }
+ − 889 return cached_home_directory;
+ − 890 }
+ − 891
+ − 892 DEFUN ("user-home-directory", Fuser_home_directory, 0, 0, 0, /*
+ − 893 Return the user's home directory, as a string.
+ − 894 */
+ − 895 ())
+ − 896 {
867
+ − 897 Ibyte *path = get_home_directory ();
428
+ − 898
771
+ − 899 return !path ? Qnil :
+ − 900 Fexpand_file_name (Fsubstitute_in_file_name (build_intstring (path)),
428
+ − 901 Qnil);
+ − 902 }
+ − 903
+ − 904 DEFUN ("system-name", Fsystem_name, 0, 0, 0, /*
+ − 905 Return the name of the machine you are running on, as a string.
+ − 906 */
+ − 907 ())
+ − 908 {
771
+ − 909 return Fcopy_sequence (Vsystem_name);
428
+ − 910 }
+ − 911
+ − 912 DEFUN ("emacs-pid", Femacs_pid, 0, 0, 0, /*
+ − 913 Return the process ID of Emacs, as an integer.
+ − 914 */
+ − 915 ())
+ − 916 {
771
+ − 917 return make_int (qxe_getpid ());
428
+ − 918 }
+ − 919
+ − 920 DEFUN ("current-time", Fcurrent_time, 0, 0, 0, /*
+ − 921 Return the current time, as the number of seconds since 1970-01-01 00:00:00.
+ − 922 The time is returned as a list of three integers. The first has the
+ − 923 most significant 16 bits of the seconds, while the second has the
+ − 924 least significant 16 bits. The third integer gives the microsecond
+ − 925 count.
+ − 926
+ − 927 The microsecond count is zero on systems that do not provide
+ − 928 resolution finer than a second.
+ − 929 */
+ − 930 ())
+ − 931 {
+ − 932 EMACS_TIME t;
+ − 933
+ − 934 EMACS_GET_TIME (t);
+ − 935 return list3 (make_int ((EMACS_SECS (t) >> 16) & 0xffff),
+ − 936 make_int ((EMACS_SECS (t) >> 0) & 0xffff),
+ − 937 make_int (EMACS_USECS (t)));
+ − 938 }
+ − 939
+ − 940 DEFUN ("current-process-time", Fcurrent_process_time, 0, 0, 0, /*
+ − 941 Return the amount of time used by this XEmacs process so far.
+ − 942 The return value is a list of three floating-point numbers, expressing
+ − 943 the user, system, and real times used by the process. The user time
+ − 944 measures the time actually spent by the CPU executing the code in this
+ − 945 process. The system time measures time spent by the CPU executing kernel
+ − 946 code on behalf of this process (e.g. I/O requests made by the process).
+ − 947
+ − 948 Note that the user and system times measure processor time, as opposed
+ − 949 to real time, and only accrue when the processor is actually doing
+ − 950 something: Time spent in an idle wait (waiting for user events to come
+ − 951 in or for I/O on a disk drive or other device to complete) does not
+ − 952 count. Thus, the user and system times will often be considerably
+ − 953 less than the real time.
+ − 954
+ − 955 Some systems do not allow the user and system times to be distinguished.
+ − 956 In this case, the user time will be the total processor time used by
+ − 957 the process, and the system time will be 0.
+ − 958
+ − 959 Some systems do not allow the real and processor times to be distinguished.
+ − 960 In this case, the user and real times will be the same and the system
+ − 961 time will be 0.
+ − 962 */
+ − 963 ())
+ − 964 {
+ − 965 double user, sys, real;
+ − 966
+ − 967 get_process_times (&user, &sys, &real);
+ − 968 return list3 (make_float (user), make_float (sys), make_float (real));
+ − 969 }
+ − 970
+ − 971
+ − 972 int lisp_to_time (Lisp_Object specified_time, time_t *result);
+ − 973 int
+ − 974 lisp_to_time (Lisp_Object specified_time, time_t *result)
+ − 975 {
+ − 976 Lisp_Object high, low;
+ − 977
+ − 978 if (NILP (specified_time))
+ − 979 return time (result) != -1;
+ − 980
+ − 981 CHECK_CONS (specified_time);
+ − 982 high = XCAR (specified_time);
+ − 983 low = XCDR (specified_time);
+ − 984 if (CONSP (low))
+ − 985 low = XCAR (low);
+ − 986 CHECK_INT (high);
+ − 987 CHECK_INT (low);
+ − 988 *result = (XINT (high) << 16) + (XINT (low) & 0xffff);
+ − 989 return *result >> 16 == XINT (high);
+ − 990 }
+ − 991
+ − 992 Lisp_Object time_to_lisp (time_t the_time);
+ − 993 Lisp_Object
+ − 994 time_to_lisp (time_t the_time)
+ − 995 {
+ − 996 unsigned int item = (unsigned int) the_time;
+ − 997 return Fcons (make_int (item >> 16), make_int (item & 0xffff));
+ − 998 }
+ − 999
771
+ − 1000 size_t emacs_strftime (Extbyte *string, size_t max, const Extbyte *format,
442
+ − 1001 const struct tm *tm);
+ − 1002 static long difftm (const struct tm *a, const struct tm *b);
428
+ − 1003
+ − 1004
+ − 1005 DEFUN ("format-time-string", Fformat_time_string, 1, 2, 0, /*
+ − 1006 Use FORMAT-STRING to format the time TIME.
+ − 1007 TIME is specified as (HIGH LOW . IGNORED) or (HIGH . LOW), as from
+ − 1008 `current-time' and `file-attributes'. If TIME is not specified it
+ − 1009 defaults to the current time.
+ − 1010 FORMAT-STRING may contain %-sequences to substitute parts of the time.
+ − 1011 %a is replaced by the abbreviated name of the day of week.
+ − 1012 %A is replaced by the full name of the day of week.
+ − 1013 %b is replaced by the abbreviated name of the month.
+ − 1014 %B is replaced by the full name of the month.
+ − 1015 %c is a synonym for "%x %X".
+ − 1016 %C is a locale-specific synonym, which defaults to "%A, %B %e, %Y" in the C locale.
+ − 1017 %d is replaced by the day of month, zero-padded.
+ − 1018 %D is a synonym for "%m/%d/%y".
+ − 1019 %e is replaced by the day of month, blank-padded.
+ − 1020 %h is a synonym for "%b".
+ − 1021 %H is replaced by the hour (00-23).
+ − 1022 %I is replaced by the hour (00-12).
+ − 1023 %j is replaced by the day of the year (001-366).
+ − 1024 %k is replaced by the hour (0-23), blank padded.
+ − 1025 %l is replaced by the hour (1-12), blank padded.
+ − 1026 %m is replaced by the month (01-12).
+ − 1027 %M is replaced by the minute (00-59).
+ − 1028 %n is a synonym for "\\n".
+ − 1029 %p is replaced by AM or PM, as appropriate.
+ − 1030 %r is a synonym for "%I:%M:%S %p".
+ − 1031 %R is a synonym for "%H:%M".
+ − 1032 %s is replaced by the time in seconds since 00:00:00, Jan 1, 1970 (a
+ − 1033 nonstandard extension)
+ − 1034 %S is replaced by the second (00-60).
+ − 1035 %t is a synonym for "\\t".
+ − 1036 %T is a synonym for "%H:%M:%S".
+ − 1037 %U is replaced by the week of the year (00-53), first day of week is Sunday.
+ − 1038 %w is replaced by the day of week (0-6), Sunday is day 0.
+ − 1039 %W is replaced by the week of the year (00-53), first day of week is Monday.
+ − 1040 %x is a locale-specific synonym, which defaults to "%D" in the C locale.
+ − 1041 %X is a locale-specific synonym, which defaults to "%T" in the C locale.
+ − 1042 %y is replaced by the year without century (00-99).
+ − 1043 %Y is replaced by the year with century.
+ − 1044 %Z is replaced by the time zone abbreviation.
+ − 1045
+ − 1046 The number of options reflects the `strftime' function.
+ − 1047
+ − 1048 BUG: If the charset used by the current locale is not ISO 8859-1, the
+ − 1049 characters appearing in the day and month names may be incorrect.
+ − 1050 */
+ − 1051 (format_string, time_))
+ − 1052 {
+ − 1053 time_t value;
665
+ − 1054 Bytecount size;
428
+ − 1055
+ − 1056 CHECK_STRING (format_string);
+ − 1057
+ − 1058 if (! lisp_to_time (time_, &value))
563
+ − 1059 invalid_argument ("Invalid time specification", Qunbound);
428
+ − 1060
+ − 1061 /* This is probably enough. */
+ − 1062 size = XSTRING_LENGTH (format_string) * 6 + 50;
+ − 1063
+ − 1064 while (1)
+ − 1065 {
851
+ − 1066 Extbyte *buf = (Extbyte *) ALLOCA (size);
771
+ − 1067 Extbyte *formext;
428
+ − 1068 *buf = 1;
771
+ − 1069
+ − 1070 /* !!#### this use of external here is not totally safe, and
+ − 1071 potentially data lossy. */
+ − 1072 LISP_STRING_TO_EXTERNAL (format_string, formext, Qnative);
+ − 1073 if (emacs_strftime (buf, size, formext,
428
+ − 1074 localtime (&value))
+ − 1075 || !*buf)
771
+ − 1076 return build_ext_string (buf, Qnative);
428
+ − 1077 /* If buffer was too small, make it bigger. */
+ − 1078 size *= 2;
+ − 1079 }
+ − 1080 }
+ − 1081
+ − 1082 DEFUN ("decode-time", Fdecode_time, 0, 1, 0, /*
+ − 1083 Decode a time value as (SEC MINUTE HOUR DAY MONTH YEAR DOW DST ZONE).
+ − 1084 The optional SPECIFIED-TIME should be a list of (HIGH LOW . IGNORED)
+ − 1085 or (HIGH . LOW), as from `current-time' and `file-attributes', or `nil'
+ − 1086 to use the current time. The list has the following nine members:
+ − 1087 SEC is an integer between 0 and 60; SEC is 60 for a leap second, which
+ − 1088 only some operating systems support. MINUTE is an integer between 0 and 59.
+ − 1089 HOUR is an integer between 0 and 23. DAY is an integer between 1 and 31.
+ − 1090 MONTH is an integer between 1 and 12. YEAR is an integer indicating the
+ − 1091 four-digit year. DOW is the day of week, an integer between 0 and 6, where
+ − 1092 0 is Sunday. DST is t if daylight savings time is effect, otherwise nil.
+ − 1093 ZONE is an integer indicating the number of seconds east of Greenwich.
+ − 1094 \(Note that Common Lisp has different meanings for DOW and ZONE.)
+ − 1095 */
+ − 1096 (specified_time))
+ − 1097 {
+ − 1098 time_t time_spec;
+ − 1099 struct tm save_tm;
+ − 1100 struct tm *decoded_time;
+ − 1101 Lisp_Object list_args[9];
+ − 1102
+ − 1103 if (! lisp_to_time (specified_time, &time_spec))
563
+ − 1104 invalid_argument ("Invalid time specification", Qunbound);
428
+ − 1105
+ − 1106 decoded_time = localtime (&time_spec);
+ − 1107 list_args[0] = make_int (decoded_time->tm_sec);
+ − 1108 list_args[1] = make_int (decoded_time->tm_min);
+ − 1109 list_args[2] = make_int (decoded_time->tm_hour);
+ − 1110 list_args[3] = make_int (decoded_time->tm_mday);
+ − 1111 list_args[4] = make_int (decoded_time->tm_mon + 1);
+ − 1112 list_args[5] = make_int (decoded_time->tm_year + 1900);
+ − 1113 list_args[6] = make_int (decoded_time->tm_wday);
+ − 1114 list_args[7] = (decoded_time->tm_isdst)? Qt : Qnil;
+ − 1115
+ − 1116 /* Make a copy, in case gmtime modifies the struct. */
+ − 1117 save_tm = *decoded_time;
+ − 1118 decoded_time = gmtime (&time_spec);
+ − 1119 if (decoded_time == 0)
+ − 1120 list_args[8] = Qnil;
+ − 1121 else
+ − 1122 list_args[8] = make_int (difftm (&save_tm, decoded_time));
+ − 1123 return Flist (9, list_args);
+ − 1124 }
+ − 1125
771
+ − 1126 static void set_time_zone_rule (Extbyte *tzstring);
428
+ − 1127
707
+ − 1128 /* from GNU Emacs 21, per Simon Josefsson, modified by stephen
+ − 1129 The slight inefficiency is justified since negative times are weird. */
+ − 1130 Lisp_Object
771
+ − 1131 make_time (time_t tiempo)
707
+ − 1132 {
771
+ − 1133 return list2 (make_int (tiempo < 0 ? tiempo / 0x10000 : tiempo >> 16),
+ − 1134 make_int (tiempo & 0xFFFF));
707
+ − 1135 }
+ − 1136
428
+ − 1137 DEFUN ("encode-time", Fencode_time, 6, MANY, 0, /*
+ − 1138 Convert SECOND, MINUTE, HOUR, DAY, MONTH, YEAR and ZONE to internal time.
+ − 1139 This is the reverse operation of `decode-time', which see.
+ − 1140 ZONE defaults to the current time zone rule. This can
+ − 1141 be a string (as from `set-time-zone-rule'), or it can be a list
+ − 1142 \(as from `current-time-zone') or an integer (as from `decode-time')
+ − 1143 applied without consideration for daylight savings time.
+ − 1144
+ − 1145 You can pass more than 7 arguments; then the first six arguments
+ − 1146 are used as SECOND through YEAR, and the *last* argument is used as ZONE.
+ − 1147 The intervening arguments are ignored.
+ − 1148 This feature lets (apply 'encode-time (decode-time ...)) work.
+ − 1149
+ − 1150 Out-of-range values for SEC, MINUTE, HOUR, DAY, or MONTH are allowed;
+ − 1151 for example, a DAY of 0 means the day preceding the given month.
+ − 1152 Year numbers less than 100 are treated just like other year numbers.
+ − 1153 If you want them to stand for years in this century, you must do that yourself.
+ − 1154 */
+ − 1155 (int nargs, Lisp_Object *args))
+ − 1156 {
+ − 1157 time_t the_time;
+ − 1158 struct tm tm;
+ − 1159 Lisp_Object zone = (nargs > 6) ? args[nargs - 1] : Qnil;
+ − 1160
+ − 1161 CHECK_INT (*args); tm.tm_sec = XINT (*args++); /* second */
+ − 1162 CHECK_INT (*args); tm.tm_min = XINT (*args++); /* minute */
+ − 1163 CHECK_INT (*args); tm.tm_hour = XINT (*args++); /* hour */
+ − 1164 CHECK_INT (*args); tm.tm_mday = XINT (*args++); /* day */
+ − 1165 CHECK_INT (*args); tm.tm_mon = XINT (*args++) - 1; /* month */
+ − 1166 CHECK_INT (*args); tm.tm_year = XINT (*args++) - 1900;/* year */
+ − 1167
+ − 1168 tm.tm_isdst = -1;
+ − 1169
+ − 1170 if (CONSP (zone))
+ − 1171 zone = XCAR (zone);
+ − 1172 if (NILP (zone))
+ − 1173 the_time = mktime (&tm);
+ − 1174 else
+ − 1175 {
771
+ − 1176 /* #### This business of modifying environ is horrendous!
+ − 1177 Why don't we just putenv()? Why don't we implement our own
+ − 1178 funs that don't require this futzing? */
+ − 1179 Extbyte tzbuf[100];
+ − 1180 Extbyte *tzstring;
+ − 1181 Extbyte **oldenv = environ, **newenv;
428
+ − 1182
+ − 1183 if (STRINGP (zone))
771
+ − 1184 LISP_STRING_TO_EXTERNAL (zone, tzstring, Qnative);
428
+ − 1185 else if (INTP (zone))
+ − 1186 {
+ − 1187 int abszone = abs (XINT (zone));
+ − 1188 sprintf (tzbuf, "XXX%s%d:%02d:%02d", "-" + (XINT (zone) < 0),
+ − 1189 abszone / (60*60), (abszone/60) % 60, abszone % 60);
+ − 1190 tzstring = tzbuf;
+ − 1191 }
+ − 1192 else
771
+ − 1193 invalid_argument ("Invalid time zone specification", Qunbound);
428
+ − 1194
+ − 1195 /* Set TZ before calling mktime; merely adjusting mktime's returned
+ − 1196 value doesn't suffice, since that would mishandle leap seconds. */
+ − 1197 set_time_zone_rule (tzstring);
+ − 1198
+ − 1199 the_time = mktime (&tm);
+ − 1200
+ − 1201 /* Restore TZ to previous value. */
+ − 1202 newenv = environ;
+ − 1203 environ = oldenv;
+ − 1204 free (newenv);
+ − 1205 #ifdef LOCALTIME_CACHE
+ − 1206 tzset ();
+ − 1207 #endif
+ − 1208 }
+ − 1209
+ − 1210 if (the_time == (time_t) -1)
563
+ − 1211 invalid_argument ("Specified time is not representable", Qunbound);
428
+ − 1212
707
+ − 1213 return make_time (the_time);
428
+ − 1214 }
+ − 1215
+ − 1216 DEFUN ("current-time-string", Fcurrent_time_string, 0, 1, 0, /*
+ − 1217 Return the current time, as a human-readable string.
+ − 1218 Programs can use this function to decode a time,
+ − 1219 since the number of columns in each field is fixed.
+ − 1220 The format is `Sun Sep 16 01:03:52 1973'.
+ − 1221 If an argument is given, it specifies a time to format
+ − 1222 instead of the current time. The argument should have the form:
+ − 1223 (HIGH . LOW)
+ − 1224 or the form:
+ − 1225 (HIGH LOW . IGNORED).
+ − 1226 Thus, you can use times obtained from `current-time'
+ − 1227 and from `file-attributes'.
+ − 1228 */
+ − 1229 (specified_time))
+ − 1230 {
+ − 1231 time_t value;
867
+ − 1232 Ibyte *the_ctime;
647
+ − 1233 EMACS_INT len; /* this is what make_ext_string() accepts; ####
665
+ − 1234 should it be an Bytecount? */
428
+ − 1235
+ − 1236 if (! lisp_to_time (specified_time, &value))
+ − 1237 value = -1;
771
+ − 1238 the_ctime = qxe_ctime (&value);
428
+ − 1239
442
+ − 1240 /* ctime is documented as always returning a "\n\0"-terminated
+ − 1241 26-byte American time string, but let's be careful anyways. */
+ − 1242 for (len = 0; the_ctime[len] != '\n' && the_ctime[len] != '\0'; len++)
+ − 1243 ;
428
+ − 1244
771
+ − 1245 return make_string (the_ctime, len);
428
+ − 1246 }
+ − 1247
+ − 1248 #define TM_YEAR_ORIGIN 1900
+ − 1249
+ − 1250 /* Yield A - B, measured in seconds. */
+ − 1251 static long
442
+ − 1252 difftm (const struct tm *a, const struct tm *b)
428
+ − 1253 {
+ − 1254 int ay = a->tm_year + (TM_YEAR_ORIGIN - 1);
+ − 1255 int by = b->tm_year + (TM_YEAR_ORIGIN - 1);
+ − 1256 /* Some compilers can't handle this as a single return statement. */
+ − 1257 long days = (
+ − 1258 /* difference in day of year */
+ − 1259 a->tm_yday - b->tm_yday
+ − 1260 /* + intervening leap days */
+ − 1261 + ((ay >> 2) - (by >> 2))
+ − 1262 - (ay/100 - by/100)
+ − 1263 + ((ay/100 >> 2) - (by/100 >> 2))
+ − 1264 /* + difference in years * 365 */
+ − 1265 + (long)(ay-by) * 365
+ − 1266 );
+ − 1267 return (60*(60*(24*days + (a->tm_hour - b->tm_hour))
+ − 1268 + (a->tm_min - b->tm_min))
+ − 1269 + (a->tm_sec - b->tm_sec));
+ − 1270 }
+ − 1271
+ − 1272 DEFUN ("current-time-zone", Fcurrent_time_zone, 0, 1, 0, /*
+ − 1273 Return the offset and name for the local time zone.
+ − 1274 This returns a list of the form (OFFSET NAME).
+ − 1275 OFFSET is an integer number of seconds ahead of UTC (east of Greenwich).
+ − 1276 A negative value means west of Greenwich.
+ − 1277 NAME is a string giving the name of the time zone.
+ − 1278 If an argument is given, it specifies when the time zone offset is determined
+ − 1279 instead of using the current time. The argument should have the form:
+ − 1280 (HIGH . LOW)
+ − 1281 or the form:
+ − 1282 (HIGH LOW . IGNORED).
+ − 1283 Thus, you can use times obtained from `current-time'
+ − 1284 and from `file-attributes'.
+ − 1285
+ − 1286 Some operating systems cannot provide all this information to Emacs;
+ − 1287 in this case, `current-time-zone' returns a list containing nil for
+ − 1288 the data it can't find.
+ − 1289 */
+ − 1290 (specified_time))
+ − 1291 {
+ − 1292 time_t value;
+ − 1293 struct tm *t = NULL;
+ − 1294
+ − 1295 if (lisp_to_time (specified_time, &value)
+ − 1296 && (t = gmtime (&value)) != 0)
+ − 1297 {
+ − 1298 struct tm gmt = *t; /* Make a copy, in case localtime modifies *t. */
+ − 1299 long offset;
771
+ − 1300 Extbyte *s;
+ − 1301 Lisp_Object tem;
428
+ − 1302
+ − 1303 t = localtime (&value);
+ − 1304 offset = difftm (t, &gmt);
+ − 1305 s = 0;
+ − 1306 #ifdef HAVE_TM_ZONE
+ − 1307 if (t->tm_zone)
771
+ − 1308 s = (Extbyte *) t->tm_zone;
428
+ − 1309 #else /* not HAVE_TM_ZONE */
+ − 1310 #ifdef HAVE_TZNAME
+ − 1311 if (t->tm_isdst == 0 || t->tm_isdst == 1)
+ − 1312 s = tzname[t->tm_isdst];
+ − 1313 #endif
+ − 1314 #endif /* not HAVE_TM_ZONE */
771
+ − 1315 if (s)
+ − 1316 tem = build_ext_string (s, Qnative);
+ − 1317 else
428
+ − 1318 {
867
+ − 1319 Ibyte buf[6];
771
+ − 1320
428
+ − 1321 /* No local time zone name is available; use "+-NNNN" instead. */
+ − 1322 int am = (offset < 0 ? -offset : offset) / 60;
771
+ − 1323 qxesprintf (buf, "%c%02d%02d", (offset < 0 ? '-' : '+'), am/60,
+ − 1324 am%60);
+ − 1325 tem = build_intstring (buf);
428
+ − 1326 }
771
+ − 1327 return list2 (make_int (offset), tem);
428
+ − 1328 }
+ − 1329 else
+ − 1330 return list2 (Qnil, Qnil);
+ − 1331 }
+ − 1332
+ − 1333 #ifdef LOCALTIME_CACHE
+ − 1334
+ − 1335 /* These two values are known to load tz files in buggy implementations,
+ − 1336 i.e. Solaris 1 executables running under either Solaris 1 or Solaris 2.
+ − 1337 Their values shouldn't matter in non-buggy implementations.
+ − 1338 We don't use string literals for these strings,
+ − 1339 since if a string in the environment is in readonly
+ − 1340 storage, it runs afoul of bugs in SVR4 and Solaris 2.3.
+ − 1341 See Sun bugs 1113095 and 1114114, ``Timezone routines
+ − 1342 improperly modify environment''. */
+ − 1343
771
+ − 1344 static Char_ASCII set_time_zone_rule_tz1[] = "TZ=GMT+0";
+ − 1345 static Char_ASCII set_time_zone_rule_tz2[] = "TZ=GMT+1";
428
+ − 1346
+ − 1347 #endif
+ − 1348
+ − 1349 /* Set the local time zone rule to TZSTRING.
+ − 1350 This allocates memory into `environ', which it is the caller's
+ − 1351 responsibility to free. */
+ − 1352 static void
771
+ − 1353 set_time_zone_rule (Extbyte *tzstring)
428
+ − 1354 {
+ − 1355 int envptrs;
771
+ − 1356 Extbyte **from, **to, **newenv;
428
+ − 1357
+ − 1358 for (from = environ; *from; from++)
+ − 1359 continue;
+ − 1360 envptrs = from - environ + 2;
771
+ − 1361 newenv = to = (Extbyte **) xmalloc (envptrs * sizeof (Extbyte *)
428
+ − 1362 + (tzstring ? strlen (tzstring) + 4 : 0));
+ − 1363 if (tzstring)
+ − 1364 {
771
+ − 1365 Extbyte *t = (Extbyte *) (to + envptrs);
428
+ − 1366 strcpy (t, "TZ=");
+ − 1367 strcat (t, tzstring);
+ − 1368 *to++ = t;
+ − 1369 }
+ − 1370
+ − 1371 for (from = environ; *from; from++)
+ − 1372 if (strncmp (*from, "TZ=", 3) != 0)
+ − 1373 *to++ = *from;
+ − 1374 *to = 0;
+ − 1375
+ − 1376 environ = newenv;
+ − 1377
+ − 1378 #ifdef LOCALTIME_CACHE
+ − 1379 {
+ − 1380 /* In SunOS 4.1.3_U1 and 4.1.4, if TZ has a value like
+ − 1381 "US/Pacific" that loads a tz file, then changes to a value like
+ − 1382 "XXX0" that does not load a tz file, and then changes back to
+ − 1383 its original value, the last change is (incorrectly) ignored.
+ − 1384 Also, if TZ changes twice in succession to values that do
+ − 1385 not load a tz file, tzset can dump core (see Sun bug#1225179).
+ − 1386 The following code works around these bugs. */
+ − 1387
+ − 1388 if (tzstring)
+ − 1389 {
+ − 1390 /* Temporarily set TZ to a value that loads a tz file
+ − 1391 and that differs from tzstring. */
771
+ − 1392 Extbyte *tz = *newenv;
428
+ − 1393 *newenv = (strcmp (tzstring, set_time_zone_rule_tz1 + 3) == 0
+ − 1394 ? set_time_zone_rule_tz2 : set_time_zone_rule_tz1);
+ − 1395 tzset ();
+ − 1396 *newenv = tz;
+ − 1397 }
+ − 1398 else
+ − 1399 {
+ − 1400 /* The implied tzstring is unknown, so temporarily set TZ to
+ − 1401 two different values that each load a tz file. */
+ − 1402 *to = set_time_zone_rule_tz1;
+ − 1403 to[1] = 0;
+ − 1404 tzset ();
+ − 1405 *to = set_time_zone_rule_tz2;
+ − 1406 tzset ();
+ − 1407 *to = 0;
+ − 1408 }
+ − 1409
+ − 1410 /* Now TZ has the desired value, and tzset can be invoked safely. */
+ − 1411 }
+ − 1412
+ − 1413 tzset ();
+ − 1414 #endif
+ − 1415 }
+ − 1416
+ − 1417 DEFUN ("set-time-zone-rule", Fset_time_zone_rule, 1, 1, 0, /*
+ − 1418 Set the local time zone using TZ, a string specifying a time zone rule.
+ − 1419 If TZ is nil, use implementation-defined default time zone information.
+ − 1420 */
+ − 1421 (tz))
+ − 1422 {
771
+ − 1423 Extbyte *tzstring;
428
+ − 1424
+ − 1425 if (NILP (tz))
+ − 1426 tzstring = 0;
+ − 1427 else
+ − 1428 {
+ − 1429 CHECK_STRING (tz);
771
+ − 1430 LISP_STRING_TO_EXTERNAL (tz, tzstring, Qnative);
428
+ − 1431 }
+ − 1432
+ − 1433 set_time_zone_rule (tzstring);
+ − 1434 if (environbuf)
+ − 1435 xfree (environbuf);
+ − 1436 environbuf = environ;
+ − 1437
+ − 1438 return Qnil;
+ − 1439 }
+ − 1440
+ − 1441
+ − 1442 void
+ − 1443 buffer_insert1 (struct buffer *buf, Lisp_Object arg)
+ − 1444 {
+ − 1445 /* This function can GC */
+ − 1446 struct gcpro gcpro1;
+ − 1447 GCPRO1 (arg);
+ − 1448 retry:
+ − 1449 if (CHAR_OR_CHAR_INTP (arg))
+ − 1450 {
+ − 1451 buffer_insert_emacs_char (buf, XCHAR_OR_CHAR_INT (arg));
+ − 1452 }
+ − 1453 else if (STRINGP (arg))
+ − 1454 {
+ − 1455 buffer_insert_lisp_string (buf, arg);
+ − 1456 }
+ − 1457 else
+ − 1458 {
+ − 1459 arg = wrong_type_argument (Qchar_or_string_p, arg);
+ − 1460 goto retry;
+ − 1461 }
+ − 1462 UNGCPRO;
+ − 1463 }
+ − 1464
+ − 1465
+ − 1466 /* Callers passing one argument to Finsert need not gcpro the
+ − 1467 argument "array", since the only element of the array will
+ − 1468 not be used after calling insert_emacs_char or insert_lisp_string,
+ − 1469 so we don't care if it gets trashed. */
+ − 1470
+ − 1471 DEFUN ("insert", Finsert, 0, MANY, 0, /*
+ − 1472 Insert the arguments, either strings or characters, at point.
+ − 1473 Point moves forward so that it ends up after the inserted text.
+ − 1474 Any other markers at the point of insertion remain before the text.
+ − 1475 If a string has non-null string-extent-data, new extents will be created.
+ − 1476 */
+ − 1477 (int nargs, Lisp_Object *args))
+ − 1478 {
+ − 1479 /* This function can GC */
+ − 1480 REGISTER int argnum;
+ − 1481
+ − 1482 for (argnum = 0; argnum < nargs; argnum++)
+ − 1483 {
+ − 1484 buffer_insert1 (current_buffer, args[argnum]);
+ − 1485 }
+ − 1486
+ − 1487 return Qnil;
+ − 1488 }
+ − 1489
+ − 1490 DEFUN ("insert-before-markers", Finsert_before_markers, 0, MANY, 0, /*
+ − 1491 Insert strings or characters at point, relocating markers after the text.
+ − 1492 Point moves forward so that it ends up after the inserted text.
+ − 1493 Any other markers at the point of insertion also end up after the text.
+ − 1494 */
+ − 1495 (int nargs, Lisp_Object *args))
+ − 1496 {
+ − 1497 /* This function can GC */
+ − 1498 REGISTER int argnum;
+ − 1499 REGISTER Lisp_Object tem;
+ − 1500
+ − 1501 for (argnum = 0; argnum < nargs; argnum++)
+ − 1502 {
+ − 1503 tem = args[argnum];
+ − 1504 retry:
+ − 1505 if (CHAR_OR_CHAR_INTP (tem))
+ − 1506 {
+ − 1507 buffer_insert_emacs_char_1 (current_buffer, -1,
+ − 1508 XCHAR_OR_CHAR_INT (tem),
+ − 1509 INSDEL_BEFORE_MARKERS);
+ − 1510 }
+ − 1511 else if (STRINGP (tem))
+ − 1512 {
+ − 1513 buffer_insert_lisp_string_1 (current_buffer, -1, tem,
+ − 1514 INSDEL_BEFORE_MARKERS);
+ − 1515 }
+ − 1516 else
+ − 1517 {
+ − 1518 tem = wrong_type_argument (Qchar_or_string_p, tem);
+ − 1519 goto retry;
+ − 1520 }
+ − 1521 }
+ − 1522 return Qnil;
+ − 1523 }
+ − 1524
+ − 1525 DEFUN ("insert-string", Finsert_string, 1, 2, 0, /*
+ − 1526 Insert STRING into BUFFER at BUFFER's point.
+ − 1527 Point moves forward so that it ends up after the inserted text.
+ − 1528 Any other markers at the point of insertion remain before the text.
+ − 1529 If a string has non-null string-extent-data, new extents will be created.
+ − 1530 BUFFER defaults to the current buffer.
+ − 1531 */
+ − 1532 (string, buffer))
+ − 1533 {
+ − 1534 struct buffer *b = decode_buffer (buffer, 1);
+ − 1535 CHECK_STRING (string);
+ − 1536 buffer_insert_lisp_string (b, string);
+ − 1537 return Qnil;
+ − 1538 }
+ − 1539
+ − 1540 /* Third argument in FSF is INHERIT:
+ − 1541
+ − 1542 "The optional third arg INHERIT, if non-nil, says to inherit text properties
+ − 1543 from adjoining text, if those properties are sticky."
+ − 1544
+ − 1545 Jamie thinks this is bogus. */
+ − 1546
+ − 1547
+ − 1548 DEFUN ("insert-char", Finsert_char, 1, 4, 0, /*
444
+ − 1549 Insert COUNT copies of CHARACTER into BUFFER.
428
+ − 1550 Point and all markers are affected as in the function `insert'.
+ − 1551 COUNT defaults to 1 if omitted.
+ − 1552 The optional third arg IGNORED is INHERIT under FSF Emacs.
+ − 1553 This is highly bogus, however, and XEmacs always behaves as if
+ − 1554 `t' were passed to INHERIT.
+ − 1555 The optional fourth arg BUFFER specifies the buffer to insert the
+ − 1556 text into. If BUFFER is nil, the current buffer is assumed.
+ − 1557 */
444
+ − 1558 (character, count, ignored, buffer))
428
+ − 1559 {
+ − 1560 /* This function can GC */
867
+ − 1561 REGISTER Ibyte *string;
814
+ − 1562 REGISTER Bytecount slen;
+ − 1563 REGISTER Bytecount i, j;
428
+ − 1564 REGISTER Bytecount n;
+ − 1565 REGISTER Bytecount charlen;
867
+ − 1566 Ibyte str[MAX_ICHAR_LEN];
428
+ − 1567 struct buffer *b = decode_buffer (buffer, 1);
+ − 1568 int cou;
+ − 1569
444
+ − 1570 CHECK_CHAR_COERCE_INT (character);
428
+ − 1571 if (NILP (count))
+ − 1572 cou = 1;
+ − 1573 else
+ − 1574 {
+ − 1575 CHECK_INT (count);
+ − 1576 cou = XINT (count);
+ − 1577 }
+ − 1578
867
+ − 1579 charlen = set_itext_ichar (str, XCHAR (character));
428
+ − 1580 n = cou * charlen;
+ − 1581 if (n <= 0)
+ − 1582 return Qnil;
814
+ − 1583 slen = min (n, (Bytecount) 768);
867
+ − 1584 string = alloca_array (Ibyte, slen);
428
+ − 1585 /* Write as many copies of the character into the temp string as will fit. */
+ − 1586 for (i = 0; i + charlen <= slen; i += charlen)
+ − 1587 for (j = 0; j < charlen; j++)
+ − 1588 string[i + j] = str[j];
+ − 1589 slen = i;
+ − 1590 while (n >= slen)
+ − 1591 {
+ − 1592 buffer_insert_raw_string (b, string, slen);
+ − 1593 n -= slen;
+ − 1594 }
+ − 1595 if (n > 0)
+ − 1596 #if 0 /* FSFmacs bogosity */
+ − 1597 {
+ − 1598 if (!NILP (inherit))
+ − 1599 insert_and_inherit (string, n);
+ − 1600 else
+ − 1601 insert (string, n);
+ − 1602 }
+ − 1603 #else
+ − 1604 buffer_insert_raw_string (b, string, n);
+ − 1605 #endif
+ − 1606
+ − 1607 return Qnil;
+ − 1608 }
+ − 1609
+ − 1610
+ − 1611 /* Making strings from buffer contents. */
+ − 1612
+ − 1613 DEFUN ("buffer-substring", Fbuffer_substring, 0, 3, 0, /*
+ − 1614 Return the contents of part of BUFFER as a string.
+ − 1615 The two arguments START and END are character positions;
+ − 1616 they can be in either order. If omitted, they default to the beginning
+ − 1617 and end of BUFFER, respectively.
+ − 1618 If there are duplicable extents in the region, the string remembers
+ − 1619 them in its extent data.
+ − 1620 If BUFFER is nil, the current buffer is assumed.
+ − 1621 */
+ − 1622 (start, end, buffer))
+ − 1623 {
+ − 1624 /* This function can GC */
665
+ − 1625 Charbpos begv, zv;
428
+ − 1626 struct buffer *b = decode_buffer (buffer, 1);
+ − 1627
+ − 1628 get_buffer_range_char (b, start, end, &begv, &zv, GB_ALLOW_NIL);
+ − 1629 return make_string_from_buffer (b, begv, zv - begv);
+ − 1630 }
+ − 1631
+ − 1632 /* It might make more sense to name this
+ − 1633 `buffer-substring-no-extents', but this name is FSFmacs-compatible,
+ − 1634 and what the function does is probably good enough for what the
+ − 1635 user-code will typically want to use it for. */
+ − 1636 DEFUN ("buffer-substring-no-properties", Fbuffer_substring_no_properties, 0, 3, 0, /*
444
+ − 1637 Return the text from START to END as a string, without copying the extents.
428
+ − 1638 */
+ − 1639 (start, end, buffer))
+ − 1640 {
+ − 1641 /* This function can GC */
665
+ − 1642 Charbpos begv, zv;
428
+ − 1643 struct buffer *b = decode_buffer (buffer, 1);
+ − 1644
+ − 1645 get_buffer_range_char (b, start, end, &begv, &zv, GB_ALLOW_NIL);
+ − 1646 return make_string_from_buffer_no_extents (b, begv, zv - begv);
+ − 1647 }
+ − 1648
+ − 1649 DEFUN ("insert-buffer-substring", Finsert_buffer_substring, 1, 3, 0, /*
+ − 1650 Insert before point a substring of the contents of buffer BUFFER.
+ − 1651 BUFFER may be a buffer or a buffer name.
+ − 1652 Arguments START and END are character numbers specifying the substring.
+ − 1653 They default to the beginning and the end of BUFFER.
+ − 1654 */
+ − 1655 (buffer, start, end))
+ − 1656 {
+ − 1657 /* This function can GC */
665
+ − 1658 Charbpos b, e;
428
+ − 1659 struct buffer *bp;
+ − 1660
+ − 1661 bp = XBUFFER (get_buffer (buffer, 1));
+ − 1662 get_buffer_range_char (bp, start, end, &b, &e, GB_ALLOW_NIL);
+ − 1663
+ − 1664 if (b < e)
+ − 1665 buffer_insert_from_buffer (current_buffer, bp, b, e - b);
+ − 1666
+ − 1667 return Qnil;
+ − 1668 }
+ − 1669
+ − 1670 DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings, 6, 6, 0, /*
+ − 1671 Compare two substrings of two buffers; return result as number.
+ − 1672 the value is -N if first string is less after N-1 chars,
+ − 1673 +N if first string is greater after N-1 chars, or 0 if strings match.
+ − 1674 Each substring is represented as three arguments: BUFFER, START and END.
+ − 1675 That makes six args in all, three for each substring.
+ − 1676
+ − 1677 The value of `case-fold-search' in the current buffer
+ − 1678 determines whether case is significant or ignored.
+ − 1679 */
+ − 1680 (buffer1, start1, end1, buffer2, start2, end2))
+ − 1681 {
665
+ − 1682 Charbpos begp1, endp1, begp2, endp2;
428
+ − 1683 REGISTER Charcount len1, len2, length, i;
+ − 1684 struct buffer *bp1, *bp2;
+ − 1685 Lisp_Object trt = ((!NILP (current_buffer->case_fold_search)) ?
446
+ − 1686 XCASE_TABLE_CANON (current_buffer->case_table) : Qnil);
428
+ − 1687
+ − 1688 /* Find the first buffer and its substring. */
+ − 1689
+ − 1690 bp1 = decode_buffer (buffer1, 1);
+ − 1691 get_buffer_range_char (bp1, start1, end1, &begp1, &endp1, GB_ALLOW_NIL);
+ − 1692
+ − 1693 /* Likewise for second substring. */
+ − 1694
+ − 1695 bp2 = decode_buffer (buffer2, 1);
+ − 1696 get_buffer_range_char (bp2, start2, end2, &begp2, &endp2, GB_ALLOW_NIL);
+ − 1697
+ − 1698 len1 = endp1 - begp1;
+ − 1699 len2 = endp2 - begp2;
+ − 1700 length = len1;
+ − 1701 if (len2 < length)
+ − 1702 length = len2;
+ − 1703
+ − 1704 for (i = 0; i < length; i++)
+ − 1705 {
867
+ − 1706 Ichar c1 = BUF_FETCH_CHAR (bp1, begp1 + i);
+ − 1707 Ichar c2 = BUF_FETCH_CHAR (bp2, begp2 + i);
428
+ − 1708 if (!NILP (trt))
+ − 1709 {
+ − 1710 c1 = TRT_TABLE_OF (trt, c1);
+ − 1711 c2 = TRT_TABLE_OF (trt, c2);
+ − 1712 }
+ − 1713 if (c1 < c2)
+ − 1714 return make_int (- 1 - i);
+ − 1715 if (c1 > c2)
+ − 1716 return make_int (i + 1);
+ − 1717 }
+ − 1718
+ − 1719 /* The strings match as far as they go.
+ − 1720 If one is shorter, that one is less. */
+ − 1721 if (length < len1)
+ − 1722 return make_int (length + 1);
+ − 1723 else if (length < len2)
+ − 1724 return make_int (- length - 1);
+ − 1725
+ − 1726 /* Same length too => they are equal. */
+ − 1727 return Qzero;
+ − 1728 }
+ − 1729
+ − 1730
+ − 1731 static Lisp_Object
+ − 1732 subst_char_in_region_unwind (Lisp_Object arg)
+ − 1733 {
+ − 1734 XBUFFER (XCAR (arg))->undo_list = XCDR (arg);
+ − 1735 return Qnil;
+ − 1736 }
+ − 1737
+ − 1738 static Lisp_Object
+ − 1739 subst_char_in_region_unwind_1 (Lisp_Object arg)
+ − 1740 {
+ − 1741 XBUFFER (XCAR (arg))->filename = XCDR (arg);
+ − 1742 return Qnil;
+ − 1743 }
+ − 1744
+ − 1745 DEFUN ("subst-char-in-region", Fsubst_char_in_region, 4, 5, 0, /*
+ − 1746 From START to END, replace FROMCHAR with TOCHAR each time it occurs.
+ − 1747 If optional arg NOUNDO is non-nil, don't record this change for undo
+ − 1748 and don't mark the buffer as really changed.
+ − 1749 */
+ − 1750 (start, end, fromchar, tochar, noundo))
+ − 1751 {
+ − 1752 /* This function can GC */
665
+ − 1753 Charbpos pos, stop;
867
+ − 1754 Ichar fromc, toc;
428
+ − 1755 int mc_count;
+ − 1756 struct buffer *buf = current_buffer;
+ − 1757 int count = specpdl_depth ();
+ − 1758
+ − 1759 get_buffer_range_char (buf, start, end, &pos, &stop, 0);
+ − 1760 CHECK_CHAR_COERCE_INT (fromchar);
+ − 1761 CHECK_CHAR_COERCE_INT (tochar);
+ − 1762
+ − 1763 fromc = XCHAR (fromchar);
+ − 1764 toc = XCHAR (tochar);
+ − 1765
+ − 1766 /* If we don't want undo, turn off putting stuff on the list.
+ − 1767 That's faster than getting rid of things,
+ − 1768 and it prevents even the entry for a first change.
+ − 1769 Also inhibit locking the file. */
+ − 1770 if (!NILP (noundo))
+ − 1771 {
+ − 1772 record_unwind_protect (subst_char_in_region_unwind,
+ − 1773 Fcons (Fcurrent_buffer (), buf->undo_list));
+ − 1774 buf->undo_list = Qt;
+ − 1775 /* Don't do file-locking. */
+ − 1776 record_unwind_protect (subst_char_in_region_unwind_1,
+ − 1777 Fcons (Fcurrent_buffer (), buf->filename));
+ − 1778 buf->filename = Qnil;
+ − 1779 }
+ − 1780
+ − 1781 mc_count = begin_multiple_change (buf, pos, stop);
+ − 1782 while (pos < stop)
+ − 1783 {
+ − 1784 if (BUF_FETCH_CHAR (buf, pos) == fromc)
+ − 1785 {
+ − 1786 /* There used to be some code here that set the buffer to
+ − 1787 unmodified if NOUNDO was specified and there was only
+ − 1788 one change to the buffer since it was last saved.
+ − 1789 This is a crock of shit, so I'm not duplicating this
+ − 1790 behavior. I think this was left over from when
+ − 1791 prepare_to_modify_buffer() actually bumped MODIFF,
+ − 1792 so that code was supposed to undo this change. --ben */
+ − 1793 buffer_replace_char (buf, pos, toc, !NILP (noundo), 0);
+ − 1794
+ − 1795 /* If noundo is not nil then we don't mark the buffer as
+ − 1796 modified. In reality that needs to happen externally
+ − 1797 only. Internally redisplay needs to know that the actual
+ − 1798 contents it should be displaying have changed. */
+ − 1799 if (!NILP (noundo))
+ − 1800 Fset_buffer_modified_p (Fbuffer_modified_p (Qnil), Qnil);
+ − 1801 }
+ − 1802 pos++;
+ − 1803 }
+ − 1804 end_multiple_change (buf, mc_count);
+ − 1805
771
+ − 1806 unbind_to (count);
428
+ − 1807 return Qnil;
+ − 1808 }
+ − 1809
+ − 1810 /* #### Shouldn't this also accept a BUFFER argument, in the good old
+ − 1811 XEmacs tradition? */
+ − 1812 DEFUN ("translate-region", Ftranslate_region, 3, 3, 0, /*
+ − 1813 Translate characters from START to END according to TABLE.
+ − 1814
+ − 1815 If TABLE is a string, the Nth character in it is the mapping for the
+ − 1816 character with code N.
+ − 1817
+ − 1818 If TABLE is a vector, its Nth element is the mapping for character
+ − 1819 with code N. The values of elements may be characters, strings, or
+ − 1820 nil (nil meaning don't replace.)
+ − 1821
+ − 1822 If TABLE is a char-table, its elements describe the mapping between
+ − 1823 characters and their replacements. The char-table should be of type
+ − 1824 `char' or `generic'.
+ − 1825
+ − 1826 Returns the number of substitutions performed.
+ − 1827 */
+ − 1828 (start, end, table))
+ − 1829 {
+ − 1830 /* This function can GC */
665
+ − 1831 Charbpos pos, stop; /* Limits of the region. */
428
+ − 1832 int cnt = 0; /* Number of changes made. */
+ − 1833 int mc_count;
+ − 1834 struct buffer *buf = current_buffer;
867
+ − 1835 Ichar oc;
428
+ − 1836
+ − 1837 get_buffer_range_char (buf, start, end, &pos, &stop, 0);
+ − 1838 mc_count = begin_multiple_change (buf, pos, stop);
+ − 1839 if (STRINGP (table))
+ − 1840 {
826
+ − 1841 Charcount size = string_char_length (table);
428
+ − 1842 #ifdef MULE
867
+ − 1843 /* Under Mule, string_ichar(n) is O(n), so for large tables or
+ − 1844 large regions it makes sense to create an array of Ichars. */
428
+ − 1845 if (size * (stop - pos) > 65536)
+ − 1846 {
867
+ − 1847 Ichar *etable = alloca_array (Ichar, size);
+ − 1848 convert_ibyte_string_into_ichar_string
793
+ − 1849 (XSTRING_DATA (table), XSTRING_LENGTH (table), etable);
428
+ − 1850 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++)
+ − 1851 {
+ − 1852 if (oc < size)
+ − 1853 {
867
+ − 1854 Ichar nc = etable[oc];
428
+ − 1855 if (nc != oc)
+ − 1856 {
+ − 1857 buffer_replace_char (buf, pos, nc, 0, 0);
+ − 1858 ++cnt;
+ − 1859 }
+ − 1860 }
+ − 1861 }
+ − 1862 }
+ − 1863 else
+ − 1864 #endif /* MULE */
+ − 1865 {
+ − 1866 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++)
+ − 1867 {
+ − 1868 if (oc < size)
+ − 1869 {
867
+ − 1870 Ichar nc = string_ichar (table, oc);
428
+ − 1871 if (nc != oc)
+ − 1872 {
+ − 1873 buffer_replace_char (buf, pos, nc, 0, 0);
+ − 1874 ++cnt;
+ − 1875 }
+ − 1876 }
+ − 1877 }
+ − 1878 }
+ − 1879 }
+ − 1880 else if (VECTORP (table))
+ − 1881 {
+ − 1882 Charcount size = XVECTOR_LENGTH (table);
+ − 1883 Lisp_Object *vtable = XVECTOR_DATA (table);
+ − 1884
+ − 1885 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++)
+ − 1886 {
+ − 1887 if (oc < size)
+ − 1888 {
+ − 1889 Lisp_Object replacement = vtable[oc];
+ − 1890 retry:
+ − 1891 if (CHAR_OR_CHAR_INTP (replacement))
+ − 1892 {
867
+ − 1893 Ichar nc = XCHAR_OR_CHAR_INT (replacement);
428
+ − 1894 if (nc != oc)
+ − 1895 {
+ − 1896 buffer_replace_char (buf, pos, nc, 0, 0);
+ − 1897 ++cnt;
+ − 1898 }
+ − 1899 }
+ − 1900 else if (STRINGP (replacement))
+ − 1901 {
826
+ − 1902 Charcount incr = string_char_length (replacement) - 1;
428
+ − 1903 buffer_delete_range (buf, pos, pos + 1, 0);
+ − 1904 buffer_insert_lisp_string_1 (buf, pos, replacement, 0);
+ − 1905 pos += incr, stop += incr;
+ − 1906 ++cnt;
+ − 1907 }
+ − 1908 else if (!NILP (replacement))
+ − 1909 {
+ − 1910 replacement = wrong_type_argument (Qchar_or_string_p, replacement);
+ − 1911 goto retry;
+ − 1912 }
+ − 1913 }
+ − 1914 }
+ − 1915 }
+ − 1916 else if (CHAR_TABLEP (table)
+ − 1917 && (XCHAR_TABLE_TYPE (table) == CHAR_TABLE_TYPE_GENERIC
+ − 1918 || XCHAR_TABLE_TYPE (table) == CHAR_TABLE_TYPE_CHAR))
+ − 1919 {
+ − 1920
+ − 1921 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++)
+ − 1922 {
826
+ − 1923 Lisp_Object replacement = get_char_table (oc, table);
428
+ − 1924 retry2:
+ − 1925 if (CHAR_OR_CHAR_INTP (replacement))
+ − 1926 {
867
+ − 1927 Ichar nc = XCHAR_OR_CHAR_INT (replacement);
428
+ − 1928 if (nc != oc)
+ − 1929 {
+ − 1930 buffer_replace_char (buf, pos, nc, 0, 0);
+ − 1931 ++cnt;
+ − 1932 }
+ − 1933 }
+ − 1934 else if (STRINGP (replacement))
+ − 1935 {
826
+ − 1936 Charcount incr = string_char_length (replacement) - 1;
428
+ − 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 {
826
+ − 1944 replacement = wrong_type_argument (Qchar_or_string_p,
+ − 1945 replacement);
428
+ − 1946 goto retry2;
+ − 1947 }
+ − 1948 }
+ − 1949 }
+ − 1950 else
+ − 1951 dead_wrong_type_argument (Qstringp, table);
+ − 1952 end_multiple_change (buf, mc_count);
+ − 1953
+ − 1954 return make_int (cnt);
+ − 1955 }
+ − 1956
+ − 1957 DEFUN ("delete-region", Fdelete_region, 2, 3, "r", /*
+ − 1958 Delete the text between point and mark.
444
+ − 1959 When called from a program, expects two arguments START and END
+ − 1960 \(integers or markers) specifying the stretch to be deleted.
+ − 1961 If optional third arg BUFFER is nil, the current buffer is assumed.
428
+ − 1962 */
444
+ − 1963 (start, end, buffer))
428
+ − 1964 {
+ − 1965 /* This function can GC */
826
+ − 1966 Charbpos char_start, char_end;
428
+ − 1967 struct buffer *buf = decode_buffer (buffer, 1);
+ − 1968
826
+ − 1969 get_buffer_range_char (buf, start, end, &char_start, &char_end, 0);
+ − 1970 buffer_delete_range (buf, char_start, char_end, 0);
428
+ − 1971 return Qnil;
+ − 1972 }
+ − 1973
+ − 1974 void
+ − 1975 widen_buffer (struct buffer *b, int no_clip)
+ − 1976 {
+ − 1977 if (BUF_BEGV (b) != BUF_BEG (b))
+ − 1978 {
+ − 1979 clip_changed = 1;
826
+ − 1980 SET_BOTH_BUF_BEGV (b, BUF_BEG (b), BYTE_BUF_BEG (b));
428
+ − 1981 }
+ − 1982 if (BUF_ZV (b) != BUF_Z (b))
+ − 1983 {
+ − 1984 clip_changed = 1;
826
+ − 1985 SET_BOTH_BUF_ZV (b, BUF_Z (b), BYTE_BUF_Z (b));
428
+ − 1986 }
+ − 1987 if (clip_changed)
+ − 1988 {
+ − 1989 if (!no_clip)
+ − 1990 MARK_CLIP_CHANGED;
+ − 1991 /* Changing the buffer bounds invalidates any recorded current
+ − 1992 column. */
+ − 1993 invalidate_current_column ();
+ − 1994 narrow_line_number_cache (b);
+ − 1995 }
+ − 1996 }
+ − 1997
+ − 1998 DEFUN ("widen", Fwiden, 0, 1, "", /*
+ − 1999 Remove restrictions (narrowing) from BUFFER.
+ − 2000 This allows the buffer's full text to be seen and edited.
+ − 2001 If BUFFER is nil, the current buffer is assumed.
+ − 2002 */
+ − 2003 (buffer))
+ − 2004 {
+ − 2005 struct buffer *b = decode_buffer (buffer, 1);
+ − 2006 widen_buffer (b, 0);
+ − 2007 return Qnil;
+ − 2008 }
+ − 2009
+ − 2010 DEFUN ("narrow-to-region", Fnarrow_to_region, 2, 3, "r", /*
+ − 2011 Restrict editing in BUFFER to the current region.
+ − 2012 The rest of the text becomes temporarily invisible and untouchable
+ − 2013 but is not deleted; if you save the buffer in a file, the invisible
+ − 2014 text is included in the file. \\[widen] makes all visible again.
+ − 2015 If BUFFER is nil, the current buffer is assumed.
+ − 2016 See also `save-restriction'.
+ − 2017
+ − 2018 When calling from a program, pass two arguments; positions (integers
+ − 2019 or markers) bounding the text that should remain visible.
+ − 2020 */
444
+ − 2021 (start, end, buffer))
428
+ − 2022 {
826
+ − 2023 Charbpos char_start, char_end;
428
+ − 2024 struct buffer *buf = decode_buffer (buffer, 1);
826
+ − 2025 Bytebpos byte_start, byte_end;
428
+ − 2026
826
+ − 2027 get_buffer_range_char (buf, start, end, &char_start, &char_end,
444
+ − 2028 GB_ALLOW_PAST_ACCESSIBLE);
826
+ − 2029 byte_start = charbpos_to_bytebpos (buf, char_start);
+ − 2030 byte_end = charbpos_to_bytebpos (buf, char_end);
428
+ − 2031
826
+ − 2032 SET_BOTH_BUF_BEGV (buf, char_start, byte_start);
+ − 2033 SET_BOTH_BUF_ZV (buf, char_end, byte_end);
+ − 2034 if (BUF_PT (buf) < char_start)
+ − 2035 BUF_SET_PT (buf, char_start);
+ − 2036 if (BUF_PT (buf) > char_end)
+ − 2037 BUF_SET_PT (buf, char_end);
428
+ − 2038 MARK_CLIP_CHANGED;
+ − 2039 /* Changing the buffer bounds invalidates any recorded current column. */
+ − 2040 invalidate_current_column ();
+ − 2041 narrow_line_number_cache (buf);
+ − 2042 return Qnil;
+ − 2043 }
+ − 2044
+ − 2045 Lisp_Object
844
+ − 2046 save_restriction_save (struct buffer *buf)
428
+ − 2047 {
844
+ − 2048 Lisp_Object bottom = noseeum_make_marker ();
+ − 2049 Lisp_Object top = noseeum_make_marker ();
+ − 2050
+ − 2051 /* Formerly, this function remembered the amount of text on either side
+ − 2052 of the restricted area, in a halfway attempt to account for insertion --
+ − 2053 it handles insertion inside the old restricted area, but not outside.
+ − 2054 The comment read:
+ − 2055
+ − 2056 [[ Note: I tried using markers here, but it does not win
428
+ − 2057 because insertion at the end of the saved region
844
+ − 2058 does not advance mh and is considered "outside" the saved region. ]]
+ − 2059
+ − 2060 But that was clearly before the advent of marker-insertion-type. --ben */
428
+ − 2061
844
+ − 2062 Fset_marker (bottom, make_int (BUF_BEGV (buf)), wrap_buffer (buf));
+ − 2063 Fset_marker (top, make_int (BUF_ZV (buf)), wrap_buffer (buf));
+ − 2064 Fset_marker_insertion_type (top, Qt);
+ − 2065
+ − 2066 return noseeum_cons (wrap_buffer (buf), noseeum_cons (bottom, top));
428
+ − 2067 }
+ − 2068
+ − 2069 Lisp_Object
+ − 2070 save_restriction_restore (Lisp_Object data)
+ − 2071 {
+ − 2072 struct buffer *buf;
844
+ − 2073 Lisp_Object markers = XCDR (data);
428
+ − 2074 int local_clip_changed = 0;
+ − 2075
+ − 2076 buf = XBUFFER (XCAR (data));
844
+ − 2077 /* someone could have killed the buffer in the meantime ... */
+ − 2078 if (BUFFER_LIVE_P (buf))
428
+ − 2079 {
844
+ − 2080 Charbpos start = marker_position (XCAR (markers));
+ − 2081 Charbpos end = marker_position (XCDR (markers));
+ − 2082 Bytebpos byte_start = charbpos_to_bytebpos (buf, start);
+ − 2083 Bytebpos byte_end = charbpos_to_bytebpos (buf, end);
428
+ − 2084
844
+ − 2085 if (BUF_BEGV (buf) != start)
+ − 2086 {
+ − 2087 local_clip_changed = 1;
+ − 2088 SET_BOTH_BUF_BEGV (buf, start, byte_start);
+ − 2089 narrow_line_number_cache (buf);
+ − 2090 }
+ − 2091 if (BUF_ZV (buf) != end)
+ − 2092 {
+ − 2093 local_clip_changed = 1;
+ − 2094 SET_BOTH_BUF_ZV (buf, end, byte_end);
+ − 2095 }
428
+ − 2096
844
+ − 2097 if (local_clip_changed)
+ − 2098 MARK_CLIP_CHANGED;
+ − 2099
+ − 2100 /* If point is outside the new visible range, move it inside. */
+ − 2101 BUF_SET_PT (buf, charbpos_clip_to_bounds (BUF_BEGV (buf), BUF_PT (buf),
+ − 2102 BUF_ZV (buf)));
428
+ − 2103 }
+ − 2104
844
+ − 2105 /* Free all the junk we allocated, so that a `save-restriction' comes
+ − 2106 for free in terms of GC junk. */
+ − 2107 free_marker (XMARKER (XCAR (markers)));
+ − 2108 free_marker (XMARKER (XCDR (markers)));
853
+ − 2109 free_cons (markers);
+ − 2110 free_cons (data);
428
+ − 2111
+ − 2112 return Qnil;
+ − 2113 }
+ − 2114
+ − 2115 DEFUN ("save-restriction", Fsave_restriction, 0, UNEVALLED, 0, /*
+ − 2116 Execute BODY, saving and restoring current buffer's restrictions.
+ − 2117 The buffer's restrictions make parts of the beginning and end invisible.
+ − 2118 \(They are set up with `narrow-to-region' and eliminated with `widen'.)
+ − 2119 This special form, `save-restriction', saves the current buffer's restrictions
+ − 2120 when it is entered, and restores them when it is exited.
+ − 2121 So any `narrow-to-region' within BODY lasts only until the end of the form.
+ − 2122 The old restrictions settings are restored
+ − 2123 even in case of abnormal exit (throw or error).
+ − 2124
+ − 2125 The value returned is the value of the last form in BODY.
+ − 2126
844
+ − 2127 As of XEmacs 22.0, `save-restriction' correctly handles all modifications
+ − 2128 made within BODY. (Formerly, it got confused if, within the BODY, you
+ − 2129 widened and then made changes outside the old restricted area.)
428
+ − 2130
+ − 2131 Note: if you are using both `save-excursion' and `save-restriction',
+ − 2132 use `save-excursion' outermost:
+ − 2133 (save-excursion (save-restriction ...))
+ − 2134 */
+ − 2135 (body))
+ − 2136 {
+ − 2137 /* This function can GC */
844
+ − 2138 int speccount =
+ − 2139 record_unwind_protect (save_restriction_restore,
+ − 2140 save_restriction_save (current_buffer));
428
+ − 2141
771
+ − 2142 return unbind_to_1 (speccount, Fprogn (body));
428
+ − 2143 }
+ − 2144
+ − 2145
+ − 2146 DEFUN ("format", Fformat, 1, MANY, 0, /*
+ − 2147 Format a string out of a control-string and arguments.
+ − 2148 The first argument is a control string.
+ − 2149 The other arguments are substituted into it to make the result, a string.
+ − 2150 It may contain %-sequences meaning to substitute the next argument.
+ − 2151 %s means print all objects as-is, using `princ'.
+ − 2152 %S means print all objects as s-expressions, using `prin1'.
+ − 2153 %d or %i means print as an integer in decimal (%o octal, %x lowercase hex,
+ − 2154 %X uppercase hex).
+ − 2155 %c means print as a single character.
+ − 2156 %f means print as a floating-point number in fixed notation (e.g. 785.200).
+ − 2157 %e or %E means print as a floating-point number in scientific notation
+ − 2158 (e.g. 7.85200e+03).
+ − 2159 %g or %G means print as a floating-point number in "pretty format";
+ − 2160 depending on the number, either %f or %e/%E format will be used, and
+ − 2161 trailing zeroes are removed from the fractional part.
+ − 2162 The argument used for all but %s and %S must be a number. It will be
+ − 2163 converted to an integer or a floating-point number as necessary.
+ − 2164
+ − 2165 %$ means reposition to read a specific numbered argument; for example,
+ − 2166 %3$s would apply the `%s' to the third argument after the control string,
+ − 2167 and the next format directive would use the fourth argument, the
+ − 2168 following one the fifth argument, etc. (There must be a positive integer
+ − 2169 between the % and the $).
+ − 2170 Zero or more of the flag characters `-', `+', ` ', `0', and `#' may be
+ − 2171 specified between the optional repositioning spec and the conversion
+ − 2172 character; see below.
+ − 2173 An optional minimum field width may be specified after any flag characters
+ − 2174 and before the conversion character; it specifies the minimum number of
+ − 2175 characters that the converted argument will take up. Padding will be
+ − 2176 added on the left (or on the right, if the `-' flag is specified), as
+ − 2177 necessary. Padding is done with spaces, or with zeroes if the `0' flag
+ − 2178 is specified.
+ − 2179 If the field width is specified as `*', the field width is assumed to have
+ − 2180 been specified as an argument. Any repositioning specification that
+ − 2181 would normally specify the argument to be converted will now specify
+ − 2182 where to find this field width argument, not where to find the argument
+ − 2183 to be converted. If there is no repositioning specification, the normal
+ − 2184 next argument is used. The argument to be converted will be the next
+ − 2185 argument after the field width argument unless the precision is also
+ − 2186 specified as `*' (see below).
+ − 2187
+ − 2188 An optional period character and precision may be specified after any
+ − 2189 minimum field width. It specifies the minimum number of digits to
+ − 2190 appear in %d, %i, %o, %x, and %X conversions (the number is padded
+ − 2191 on the left with zeroes as necessary); the number of digits printed
+ − 2192 after the decimal point for %f, %e, and %E conversions; the number
+ − 2193 of significant digits printed in %g and %G conversions; and the
+ − 2194 maximum number of non-padding characters printed in %s and %S
+ − 2195 conversions. The default precision for floating-point conversions
+ − 2196 is six.
+ − 2197 If the precision is specified as `*', the precision is assumed to have been
+ − 2198 specified as an argument. The argument used will be the next argument
+ − 2199 after the field width argument, if any. If the field width was not
+ − 2200 specified as an argument, any repositioning specification that would
+ − 2201 normally specify the argument to be converted will now specify where to
+ − 2202 find the precision argument. If there is no repositioning specification,
+ − 2203 the normal next argument is used.
+ − 2204
+ − 2205 The ` ' and `+' flags mean prefix non-negative numbers with a space or
+ − 2206 plus sign, respectively.
+ − 2207 The `#' flag means print numbers in an alternate, more verbose format:
+ − 2208 octal numbers begin with zero; hex numbers begin with a 0x or 0X;
+ − 2209 a decimal point is printed in %f, %e, and %E conversions even if no
+ − 2210 numbers are printed after it; and trailing zeroes are not omitted in
+ − 2211 %g and %G conversions.
+ − 2212
+ − 2213 Use %% to put a single % into the output.
+ − 2214 */
+ − 2215 (int nargs, Lisp_Object *args))
+ − 2216 {
+ − 2217 /* It should not be necessary to GCPRO ARGS, because
+ − 2218 the caller in the interpreter should take care of that. */
+ − 2219
+ − 2220 CHECK_STRING (args[0]);
771
+ − 2221 return emacs_vsprintf_string_lisp (0, args[0], nargs - 1, args + 1);
428
+ − 2222 }
+ − 2223
+ − 2224
+ − 2225 DEFUN ("char-equal", Fchar_equal, 2, 3, 0, /*
+ − 2226 Return t if two characters match, optionally ignoring case.
+ − 2227 Both arguments must be characters (i.e. NOT integers).
+ − 2228 Case is ignored if `case-fold-search' is non-nil in BUFFER.
+ − 2229 If BUFFER is nil, the current buffer is assumed.
+ − 2230 */
444
+ − 2231 (character1, character2, buffer))
428
+ − 2232 {
867
+ − 2233 Ichar x1, x2;
428
+ − 2234 struct buffer *b = decode_buffer (buffer, 1);
+ − 2235
444
+ − 2236 CHECK_CHAR_COERCE_INT (character1);
+ − 2237 CHECK_CHAR_COERCE_INT (character2);
+ − 2238 x1 = XCHAR (character1);
+ − 2239 x2 = XCHAR (character2);
428
+ − 2240
+ − 2241 return (!NILP (b->case_fold_search)
+ − 2242 ? DOWNCASE (b, x1) == DOWNCASE (b, x2)
+ − 2243 : x1 == x2)
+ − 2244 ? Qt : Qnil;
+ − 2245 }
+ − 2246
434
+ − 2247 DEFUN ("char=", Fchar_Equal, 2, 2, 0, /*
428
+ − 2248 Return t if two characters match, case is significant.
+ − 2249 Both arguments must be characters (i.e. NOT integers).
+ − 2250 */
444
+ − 2251 (character1, character2))
428
+ − 2252 {
444
+ − 2253 CHECK_CHAR_COERCE_INT (character1);
+ − 2254 CHECK_CHAR_COERCE_INT (character2);
428
+ − 2255
444
+ − 2256 return EQ (character1, character2) ? Qt : Qnil;
428
+ − 2257 }
+ − 2258
+ − 2259 #if 0 /* Undebugged FSFmacs code */
+ − 2260 /* Transpose the markers in two regions of the current buffer, and
+ − 2261 adjust the ones between them if necessary (i.e.: if the regions
+ − 2262 differ in size).
+ − 2263
+ − 2264 Traverses the entire marker list of the buffer to do so, adding an
+ − 2265 appropriate amount to some, subtracting from some, and leaving the
+ − 2266 rest untouched. Most of this is copied from adjust_markers in insdel.c.
+ − 2267
+ − 2268 It's the caller's job to see that (start1 <= end1 <= start2 <= end2). */
+ − 2269
+ − 2270 void
665
+ − 2271 transpose_markers (Charbpos start1, Charbpos end1, Charbpos start2, Charbpos end2)
428
+ − 2272 {
+ − 2273 Charcount amt1, amt2, diff;
+ − 2274 Lisp_Object marker;
+ − 2275 struct buffer *buf = current_buffer;
+ − 2276
+ − 2277 /* Update point as if it were a marker. */
+ − 2278 if (BUF_PT (buf) < start1)
+ − 2279 ;
+ − 2280 else if (BUF_PT (buf) < end1)
+ − 2281 BUF_SET_PT (buf, BUF_PT (buf) + (end2 - end1));
+ − 2282 else if (BUF_PT (buf) < start2)
+ − 2283 BUF_SET_PT (buf, BUF_PT (buf) + (end2 - start2) - (end1 - start1));
+ − 2284 else if (BUF_PT (buf) < end2)
+ − 2285 BUF_SET_PT (buf, BUF_PT (buf) - (start2 - start1));
+ − 2286
+ − 2287 /* We used to adjust the endpoints here to account for the gap, but that
+ − 2288 isn't good enough. Even if we assume the caller has tried to move the
+ − 2289 gap out of our way, it might still be at start1 exactly, for example;
+ − 2290 and that places it `inside' the interval, for our purposes. The amount
+ − 2291 of adjustment is nontrivial if there's a `denormalized' marker whose
+ − 2292 position is between GPT and GPT + GAP_SIZE, so it's simpler to leave
+ − 2293 the dirty work to Fmarker_position, below. */
+ − 2294
+ − 2295 /* The difference between the region's lengths */
+ − 2296 diff = (end2 - start2) - (end1 - start1);
+ − 2297
+ − 2298 /* For shifting each marker in a region by the length of the other
+ − 2299 * region plus the distance between the regions.
+ − 2300 */
+ − 2301 amt1 = (end2 - start2) + (start2 - end1);
+ − 2302 amt2 = (end1 - start1) + (start2 - end1);
+ − 2303
+ − 2304 for (marker = BUF_MARKERS (buf); !NILP (marker);
+ − 2305 marker = XMARKER (marker)->chain)
+ − 2306 {
665
+ − 2307 Charbpos mpos = marker_position (marker);
428
+ − 2308 if (mpos >= start1 && mpos < end2)
+ − 2309 {
+ − 2310 if (mpos < end1)
+ − 2311 mpos += amt1;
+ − 2312 else if (mpos < start2)
+ − 2313 mpos += diff;
+ − 2314 else
+ − 2315 mpos -= amt2;
+ − 2316 set_marker_position (marker, mpos);
+ − 2317 }
+ − 2318 }
+ − 2319 }
+ − 2320
+ − 2321 #endif /* 0 */
+ − 2322
+ − 2323 DEFUN ("transpose-regions", Ftranspose_regions, 4, 5, 0, /*
+ − 2324 Transpose region START1 to END1 with START2 to END2.
+ − 2325 The regions may not be overlapping, because the size of the buffer is
+ − 2326 never changed in a transposition.
+ − 2327
444
+ − 2328 Optional fifth arg LEAVE-MARKERS, if non-nil, means don't transpose
428
+ − 2329 any markers that happen to be located in the regions. (#### BUG: currently
444
+ − 2330 this function always acts as if LEAVE-MARKERS is non-nil.)
428
+ − 2331
+ − 2332 Transposing beyond buffer boundaries is an error.
+ − 2333 */
444
+ − 2334 (start1, end1, start2, end2, leave_markers))
428
+ − 2335 {
665
+ − 2336 Charbpos startr1, endr1, startr2, endr2;
428
+ − 2337 Charcount len1, len2;
+ − 2338 Lisp_Object string1, string2;
+ − 2339 struct buffer *buf = current_buffer;
+ − 2340
444
+ − 2341 get_buffer_range_char (buf, start1, end1, &startr1, &endr1, 0);
+ − 2342 get_buffer_range_char (buf, start2, end2, &startr2, &endr2, 0);
428
+ − 2343
444
+ − 2344 len1 = endr1 - startr1;
+ − 2345 len2 = endr2 - startr2;
428
+ − 2346
444
+ − 2347 if (startr2 < endr1)
563
+ − 2348 invalid_argument ("transposed regions not properly ordered", Qunbound);
444
+ − 2349 else if (startr1 == endr1 || startr2 == endr2)
563
+ − 2350 invalid_argument ("transposed region may not be of length 0", Qunbound);
428
+ − 2351
444
+ − 2352 string1 = make_string_from_buffer (buf, startr1, len1);
+ − 2353 string2 = make_string_from_buffer (buf, startr2, len2);
+ − 2354 buffer_delete_range (buf, startr2, endr2, 0);
+ − 2355 buffer_insert_lisp_string_1 (buf, startr2, string1, 0);
+ − 2356 buffer_delete_range (buf, startr1, endr1, 0);
+ − 2357 buffer_insert_lisp_string_1 (buf, startr1, string2, 0);
428
+ − 2358
+ − 2359 /* In FSFmacs there is a whole bunch of really ugly code here
+ − 2360 to attempt to transpose the regions without using up any
+ − 2361 extra memory. Although the intent may be good, the result
+ − 2362 was highly bogus. */
+ − 2363
+ − 2364 return Qnil;
+ − 2365 }
+ − 2366
+ − 2367
+ − 2368 /************************************************************************/
+ − 2369 /* initialization */
+ − 2370 /************************************************************************/
+ − 2371
+ − 2372 void
+ − 2373 syms_of_editfns (void)
+ − 2374 {
563
+ − 2375 DEFSYMBOL (Qpoint);
+ − 2376 DEFSYMBOL (Qmark);
+ − 2377 DEFSYMBOL (Qregion_beginning);
+ − 2378 DEFSYMBOL (Qregion_end);
+ − 2379 DEFSYMBOL (Qformat);
+ − 2380 DEFSYMBOL (Quser_files_and_directories);
428
+ − 2381
+ − 2382 DEFSUBR (Fchar_equal);
+ − 2383 DEFSUBR (Fchar_Equal);
+ − 2384 DEFSUBR (Fgoto_char);
+ − 2385 DEFSUBR (Fstring_to_char);
+ − 2386 DEFSUBR (Fchar_to_string);
+ − 2387 DEFSUBR (Fbuffer_substring);
+ − 2388 DEFSUBR (Fbuffer_substring_no_properties);
+ − 2389
+ − 2390 DEFSUBR (Fpoint_marker);
+ − 2391 DEFSUBR (Fmark_marker);
+ − 2392 DEFSUBR (Fpoint);
+ − 2393 DEFSUBR (Fregion_beginning);
+ − 2394 DEFSUBR (Fregion_end);
+ − 2395 DEFSUBR (Fsave_excursion);
+ − 2396 DEFSUBR (Fsave_current_buffer);
+ − 2397
+ − 2398 DEFSUBR (Fbuffer_size);
+ − 2399 DEFSUBR (Fpoint_max);
+ − 2400 DEFSUBR (Fpoint_min);
+ − 2401 DEFSUBR (Fpoint_min_marker);
+ − 2402 DEFSUBR (Fpoint_max_marker);
+ − 2403
+ − 2404 DEFSUBR (Fbobp);
+ − 2405 DEFSUBR (Feobp);
+ − 2406 DEFSUBR (Fbolp);
+ − 2407 DEFSUBR (Feolp);
+ − 2408 DEFSUBR (Ffollowing_char);
+ − 2409 DEFSUBR (Fpreceding_char);
+ − 2410 DEFSUBR (Fchar_after);
+ − 2411 DEFSUBR (Fchar_before);
+ − 2412 DEFSUBR (Finsert);
+ − 2413 DEFSUBR (Finsert_string);
+ − 2414 DEFSUBR (Finsert_before_markers);
+ − 2415 DEFSUBR (Finsert_char);
+ − 2416
+ − 2417 DEFSUBR (Ftemp_directory);
+ − 2418 DEFSUBR (Fuser_login_name);
+ − 2419 DEFSUBR (Fuser_real_login_name);
+ − 2420 DEFSUBR (Fuser_uid);
+ − 2421 DEFSUBR (Fuser_real_uid);
+ − 2422 DEFSUBR (Fuser_full_name);
+ − 2423 DEFSUBR (Fuser_home_directory);
+ − 2424 DEFSUBR (Femacs_pid);
+ − 2425 DEFSUBR (Fcurrent_time);
+ − 2426 DEFSUBR (Fcurrent_process_time);
+ − 2427 DEFSUBR (Fformat_time_string);
+ − 2428 DEFSUBR (Fdecode_time);
+ − 2429 DEFSUBR (Fencode_time);
+ − 2430 DEFSUBR (Fcurrent_time_string);
+ − 2431 DEFSUBR (Fcurrent_time_zone);
+ − 2432 DEFSUBR (Fset_time_zone_rule);
+ − 2433 DEFSUBR (Fsystem_name);
+ − 2434 DEFSUBR (Fformat);
+ − 2435
+ − 2436 DEFSUBR (Finsert_buffer_substring);
+ − 2437 DEFSUBR (Fcompare_buffer_substrings);
+ − 2438 DEFSUBR (Fsubst_char_in_region);
+ − 2439 DEFSUBR (Ftranslate_region);
+ − 2440 DEFSUBR (Fdelete_region);
+ − 2441 DEFSUBR (Fwiden);
+ − 2442 DEFSUBR (Fnarrow_to_region);
+ − 2443 DEFSUBR (Fsave_restriction);
+ − 2444 DEFSUBR (Ftranspose_regions);
+ − 2445
563
+ − 2446 DEFSYMBOL (Qzmacs_update_region);
+ − 2447 DEFSYMBOL (Qzmacs_deactivate_region);
+ − 2448 DEFSYMBOL (Qzmacs_region_buffer);
428
+ − 2449 }
+ − 2450
+ − 2451 void
+ − 2452 vars_of_editfns (void)
+ − 2453 {
+ − 2454 staticpro (&Vsystem_name);
+ − 2455 #if 0
+ − 2456 staticpro (&Vuser_name);
+ − 2457 staticpro (&Vuser_real_name);
+ − 2458 #endif
+ − 2459 DEFVAR_BOOL ("zmacs-regions", &zmacs_regions /*
+ − 2460 *Whether LISPM-style active regions should be used.
+ − 2461 This means that commands which operate on the region (the area between the
+ − 2462 point and the mark) will only work while the region is in the ``active''
+ − 2463 state, which is indicated by highlighting. Executing most commands causes
+ − 2464 the region to not be in the active state, so (for example) \\[kill-region] will only
+ − 2465 work immediately after activating the region.
+ − 2466
+ − 2467 More specifically:
+ − 2468
+ − 2469 - Commands which operate on the region only work if the region is active.
+ − 2470 - Only a very small set of commands cause the region to become active:
444
+ − 2471 Those commands whose semantics are to mark an area, like `mark-defun'.
428
+ − 2472 - The region is deactivated after each command that is executed, except that:
+ − 2473 - "Motion" commands do not change whether the region is active or not.
+ − 2474
+ − 2475 set-mark-command (C-SPC) pushes a mark and activates the region. Moving the
+ − 2476 cursor with normal motion commands (C-n, C-p, etc) will cause the region
+ − 2477 between point and the recently-pushed mark to be highlighted. It will
+ − 2478 remain highlighted until some non-motion command is executed.
+ − 2479
+ − 2480 exchange-point-and-mark (\\[exchange-point-and-mark]) activates the region. So if you mark a
+ − 2481 region and execute a command that operates on it, you can reactivate the
+ − 2482 same region with \\[exchange-point-and-mark] (or perhaps \\[exchange-point-and-mark] \\[exchange-point-and-mark]) to operate on it
+ − 2483 again.
+ − 2484
+ − 2485 Generally, commands which push marks as a means of navigation (like
+ − 2486 beginning-of-buffer and end-of-buffer (M-< and M->)) do not activate the
+ − 2487 region. But commands which push marks as a means of marking an area of
+ − 2488 text (like mark-defun (\\[mark-defun]), mark-word (\\[mark-word]) or mark-whole-buffer (\\[mark-whole-buffer]))
+ − 2489 do activate the region.
+ − 2490
+ − 2491 The way the command loop actually works with regard to deactivating the
+ − 2492 region is as follows:
+ − 2493
+ − 2494 - If the variable `zmacs-region-stays' has been set to t during the command
+ − 2495 just executed, the region is left alone (this is how the motion commands
+ − 2496 make the region stay around; see the `_' flag in the `interactive'
+ − 2497 specification). `zmacs-region-stays' is reset to nil before each command
+ − 2498 is executed.
+ − 2499 - If the function `zmacs-activate-region' has been called during the command
+ − 2500 just executed, the region is left alone. Very few functions should
+ − 2501 actually call this function.
+ − 2502 - Otherwise, if the region is active, the region is deactivated and
+ − 2503 the `zmacs-deactivate-region-hook' is called.
+ − 2504 */ );
+ − 2505 /* Zmacs style active regions are now ON by default */
+ − 2506 zmacs_regions = 1;
+ − 2507
+ − 2508 DEFVAR_BOOL ("zmacs-region-active-p", &zmacs_region_active_p /*
+ − 2509 Do not alter this. It is for internal use only.
+ − 2510 */ );
+ − 2511 zmacs_region_active_p = 0;
+ − 2512
+ − 2513 DEFVAR_BOOL ("zmacs-region-stays", &zmacs_region_stays /*
+ − 2514 Whether the current command will deactivate the region.
+ − 2515 Commands which do not wish to affect whether the region is currently
+ − 2516 highlighted should set this to t. Normally, the region is turned off after
+ − 2517 executing each command that did not explicitly turn it on with the function
+ − 2518 zmacs-activate-region. Setting this to true lets a command be non-intrusive.
+ − 2519 See the variable `zmacs-regions'.
+ − 2520
+ − 2521 The same effect can be achieved using the `_' interactive specification.
442
+ − 2522
+ − 2523 `zmacs-region-stays' is reset to nil before each command is executed.
428
+ − 2524 */ );
+ − 2525 zmacs_region_stays = 0;
+ − 2526
+ − 2527 DEFVAR_BOOL ("atomic-extent-goto-char-p", &atomic_extent_goto_char_p /*
+ − 2528 Do not use this -- it will be going away soon.
+ − 2529 Indicates if `goto-char' has just been run. This information is allegedly
+ − 2530 needed to get the desired behavior for atomic extents and unfortunately
+ − 2531 is not available by any other means.
+ − 2532 */ );
+ − 2533 atomic_extent_goto_char_p = 0;
+ − 2534 #ifdef AMPERSAND_FULL_NAME
771
+ − 2535 Fprovide (intern ("ampersand-full-name"));
428
+ − 2536 #endif
+ − 2537
+ − 2538 DEFVAR_LISP ("user-full-name", &Vuser_full_name /*
+ − 2539 *The name of the user.
+ − 2540 The function `user-full-name', which will return the value of this
+ − 2541 variable, when called without arguments.
+ − 2542 This is initialized to the value of the NAME environment variable.
+ − 2543 */ );
+ − 2544 /* Initialized at run-time. */
+ − 2545 Vuser_full_name = Qnil;
+ − 2546 }
