1 /* Lisp functions pertaining to editing.
2 Copyright (C) 1985,86,87,89,93,94,95 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
22 #include <sys/types.h>
33 #include "intervals.h"
39 #define min(a, b) ((a) < (b) ? (a) : (b))
40 #define max(a, b) ((a) > (b) ? (a) : (b))
42 extern char **environ
;
43 extern Lisp_Object
make_time ();
44 extern void insert_from_buffer ();
45 static int tm_diff ();
46 static void update_buffer_properties ();
47 void set_time_zone_rule ();
49 Lisp_Object Vbuffer_access_fontify_functions
;
50 Lisp_Object Qbuffer_access_fontify_functions
;
51 Lisp_Object Vbuffer_access_fontified_property
;
53 /* Some static data, and a function to initialize it for each run */
55 Lisp_Object Vsystem_name
;
56 Lisp_Object Vuser_real_login_name
; /* login name of current user ID */
57 Lisp_Object Vuser_full_name
; /* full name of current user */
58 Lisp_Object Vuser_login_name
; /* user name from LOGNAME or USER */
64 register unsigned char *p
, *q
, *r
;
65 struct passwd
*pw
; /* password entry for the current user */
66 extern char *index ();
69 /* Set up system_name even when dumping. */
73 /* Don't bother with this on initial start when just dumping out */
76 #endif /* not CANNOT_DUMP */
78 pw
= (struct passwd
*) getpwuid (getuid ());
80 /* We let the real user name default to "root" because that's quite
81 accurate on MSDOG and because it lets Emacs find the init file.
82 (The DVX libraries override the Djgpp libraries here.) */
83 Vuser_real_login_name
= build_string (pw
? pw
->pw_name
: "root");
85 Vuser_real_login_name
= build_string (pw
? pw
->pw_name
: "unknown");
88 /* Get the effective user name, by consulting environment variables,
89 or the effective uid if those are unset. */
90 user_name
= (char *) getenv ("LOGNAME");
93 user_name
= (char *) getenv ("USERNAME"); /* it's USERNAME on NT */
95 user_name
= (char *) getenv ("USER");
96 #endif /* WINDOWSNT */
99 pw
= (struct passwd
*) getpwuid (geteuid ());
100 user_name
= (char *) (pw
? pw
->pw_name
: "unknown");
102 Vuser_login_name
= build_string (user_name
);
104 /* If the user name claimed in the environment vars differs from
105 the real uid, use the claimed name to find the full name. */
106 tem
= Fstring_equal (Vuser_login_name
, Vuser_real_login_name
);
108 pw
= (struct passwd
*) getpwnam (XSTRING (Vuser_login_name
)->data
);
110 p
= (unsigned char *) (pw
? USER_FULL_NAME
: "unknown");
111 q
= (unsigned char *) index (p
, ',');
112 Vuser_full_name
= make_string (p
, q
? q
- p
: strlen (p
));
114 #ifdef AMPERSAND_FULL_NAME
115 p
= XSTRING (Vuser_full_name
)->data
;
116 q
= (unsigned char *) index (p
, '&');
117 /* Substitute the login name for the &, upcasing the first character. */
120 r
= (unsigned char *) alloca (strlen (p
)
121 + XSTRING (Vuser_login_name
)->size
+ 1);
124 strcat (r
, XSTRING (Vuser_login_name
)->data
);
125 r
[q
- p
] = UPCASE (r
[q
- p
]);
127 Vuser_full_name
= build_string (r
);
129 #endif /* AMPERSAND_FULL_NAME */
131 p
= (unsigned char *) getenv ("NAME");
133 Vuser_full_name
= build_string (p
);
136 DEFUN ("char-to-string", Fchar_to_string
, Schar_to_string
, 1, 1, 0,
137 "Convert arg CHARACTER to a one-character string containing that character.")
139 Lisp_Object character
;
142 CHECK_NUMBER (character
, 0);
144 c
= XINT (character
);
145 return make_string (&c
, 1);
148 DEFUN ("string-to-char", Fstring_to_char
, Sstring_to_char
, 1, 1, 0,
149 "Convert arg STRING to a character, the first character of that string.")
151 register Lisp_Object string
;
153 register Lisp_Object val
;
154 register struct Lisp_String
*p
;
155 CHECK_STRING (string
, 0);
157 p
= XSTRING (string
);
159 XSETFASTINT (val
, ((unsigned char *) p
->data
)[0]);
161 XSETFASTINT (val
, 0);
169 register Lisp_Object mark
;
170 mark
= Fmake_marker ();
171 Fset_marker (mark
, make_number (val
), Qnil
);
175 DEFUN ("point", Fpoint
, Spoint
, 0, 0, 0,
176 "Return value of point, as an integer.\n\
177 Beginning of buffer is position (point-min)")
181 XSETFASTINT (temp
, PT
);
185 DEFUN ("point-marker", Fpoint_marker
, Spoint_marker
, 0, 0, 0,
186 "Return value of point, as a marker object.")
189 return buildmark (PT
);
193 clip_to_bounds (lower
, num
, upper
)
194 int lower
, num
, upper
;
198 else if (num
> upper
)
204 DEFUN ("goto-char", Fgoto_char
, Sgoto_char
, 1, 1, "NGoto char: ",
205 "Set point to POSITION, a number or marker.\n\
206 Beginning of buffer is position (point-min), end is (point-max).")
208 register Lisp_Object position
;
210 CHECK_NUMBER_COERCE_MARKER (position
, 0);
212 SET_PT (clip_to_bounds (BEGV
, XINT (position
), ZV
));
217 region_limit (beginningp
)
220 extern Lisp_Object Vmark_even_if_inactive
; /* Defined in callint.c. */
221 register Lisp_Object m
;
222 if (!NILP (Vtransient_mark_mode
) && NILP (Vmark_even_if_inactive
)
223 && NILP (current_buffer
->mark_active
))
224 Fsignal (Qmark_inactive
, Qnil
);
225 m
= Fmarker_position (current_buffer
->mark
);
226 if (NILP (m
)) error ("There is no region now");
227 if ((PT
< XFASTINT (m
)) == beginningp
)
228 return (make_number (PT
));
233 DEFUN ("region-beginning", Fregion_beginning
, Sregion_beginning
, 0, 0, 0,
234 "Return position of beginning of region, as an integer.")
237 return (region_limit (1));
240 DEFUN ("region-end", Fregion_end
, Sregion_end
, 0, 0, 0,
241 "Return position of end of region, as an integer.")
244 return (region_limit (0));
247 DEFUN ("mark-marker", Fmark_marker
, Smark_marker
, 0, 0, 0,
248 "Return this buffer's mark, as a marker object.\n\
249 Watch out! Moving this marker changes the mark position.\n\
250 If you set the marker not to point anywhere, the buffer will have no mark.")
253 return current_buffer
->mark
;
257 save_excursion_save ()
259 register int visible
= (XBUFFER (XWINDOW (selected_window
)->buffer
)
262 return Fcons (Fpoint_marker (),
263 Fcons (Fcopy_marker (current_buffer
->mark
, Qnil
),
264 Fcons (visible
? Qt
: Qnil
,
265 current_buffer
->mark_active
)));
269 save_excursion_restore (info
)
272 Lisp_Object tem
, tem1
, omark
, nmark
;
273 struct gcpro gcpro1
, gcpro2
, gcpro3
;
275 tem
= Fmarker_buffer (Fcar (info
));
276 /* If buffer being returned to is now deleted, avoid error */
277 /* Otherwise could get error here while unwinding to top level
279 /* In that case, Fmarker_buffer returns nil now. */
283 omark
= nmark
= Qnil
;
284 GCPRO3 (info
, omark
, nmark
);
289 unchain_marker (tem
);
290 tem
= Fcar (Fcdr (info
));
291 omark
= Fmarker_position (current_buffer
->mark
);
292 Fset_marker (current_buffer
->mark
, tem
, Fcurrent_buffer ());
293 nmark
= Fmarker_position (tem
);
294 unchain_marker (tem
);
295 tem
= Fcdr (Fcdr (info
));
296 #if 0 /* We used to make the current buffer visible in the selected window
297 if that was true previously. That avoids some anomalies.
298 But it creates others, and it wasn't documented, and it is simpler
299 and cleaner never to alter the window/buffer connections. */
302 && current_buffer
!= XBUFFER (XWINDOW (selected_window
)->buffer
))
303 Fswitch_to_buffer (Fcurrent_buffer (), Qnil
);
306 tem1
= current_buffer
->mark_active
;
307 current_buffer
->mark_active
= Fcdr (tem
);
308 if (!NILP (Vrun_hooks
))
310 /* If mark is active now, and either was not active
311 or was at a different place, run the activate hook. */
312 if (! NILP (current_buffer
->mark_active
))
314 if (! EQ (omark
, nmark
))
315 call1 (Vrun_hooks
, intern ("activate-mark-hook"));
317 /* If mark has ceased to be active, run deactivate hook. */
318 else if (! NILP (tem1
))
319 call1 (Vrun_hooks
, intern ("deactivate-mark-hook"));
325 DEFUN ("save-excursion", Fsave_excursion
, Ssave_excursion
, 0, UNEVALLED
, 0,
326 "Save point, mark, and current buffer; execute BODY; restore those things.\n\
327 Executes BODY just like `progn'.\n\
328 The values of point, mark and the current buffer are restored\n\
329 even in case of abnormal exit (throw or error).\n\
330 The state of activation of the mark is also restored.")
334 register Lisp_Object val
;
335 int count
= specpdl_ptr
- specpdl
;
337 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
340 return unbind_to (count
, val
);
343 DEFUN ("save-current-buffer", Fsave_current_buffer
, Ssave_current_buffer
, 0, UNEVALLED
, 0,
344 "Save the current buffer; execute BODY; restore the current buffer.\n\
345 Executes BODY just like `progn'.")
349 register Lisp_Object val
;
350 int count
= specpdl_ptr
- specpdl
;
352 record_unwind_protect (Fset_buffer
, Fcurrent_buffer ());
355 return unbind_to (count
, val
);
358 DEFUN ("buffer-size", Fbufsize
, Sbufsize
, 0, 0, 0,
359 "Return the number of characters in the current buffer.")
363 XSETFASTINT (temp
, Z
- BEG
);
367 DEFUN ("point-min", Fpoint_min
, Spoint_min
, 0, 0, 0,
368 "Return the minimum permissible value of point in the current buffer.\n\
369 This is 1, unless narrowing (a buffer restriction) is in effect.")
373 XSETFASTINT (temp
, BEGV
);
377 DEFUN ("point-min-marker", Fpoint_min_marker
, Spoint_min_marker
, 0, 0, 0,
378 "Return a marker to the minimum permissible value of point in this buffer.\n\
379 This is the beginning, unless narrowing (a buffer restriction) is in effect.")
382 return buildmark (BEGV
);
385 DEFUN ("point-max", Fpoint_max
, Spoint_max
, 0, 0, 0,
386 "Return the maximum permissible value of point in the current buffer.\n\
387 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)\n\
388 is in effect, in which case it is less.")
392 XSETFASTINT (temp
, ZV
);
396 DEFUN ("point-max-marker", Fpoint_max_marker
, Spoint_max_marker
, 0, 0, 0,
397 "Return a marker to the maximum permissible value of point in this buffer.\n\
398 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)\n\
399 is in effect, in which case it is less.")
402 return buildmark (ZV
);
405 DEFUN ("following-char", Ffollowing_char
, Sfollowing_char
, 0, 0, 0,
406 "Return the character following point, as a number.\n\
407 At the end of the buffer or accessible region, return 0.")
412 XSETFASTINT (temp
, 0);
414 XSETFASTINT (temp
, FETCH_CHAR (PT
));
418 DEFUN ("preceding-char", Fprevious_char
, Sprevious_char
, 0, 0, 0,
419 "Return the character preceding point, as a number.\n\
420 At the beginning of the buffer or accessible region, return 0.")
425 XSETFASTINT (temp
, 0);
427 XSETFASTINT (temp
, FETCH_CHAR (PT
- 1));
431 DEFUN ("bobp", Fbobp
, Sbobp
, 0, 0, 0,
432 "Return T if point is at the beginning of the buffer.\n\
433 If the buffer is narrowed, this means the beginning of the narrowed part.")
441 DEFUN ("eobp", Feobp
, Seobp
, 0, 0, 0,
442 "Return T if point is at the end of the buffer.\n\
443 If the buffer is narrowed, this means the end of the narrowed part.")
451 DEFUN ("bolp", Fbolp
, Sbolp
, 0, 0, 0,
452 "Return T if point is at the beginning of a line.")
455 if (PT
== BEGV
|| FETCH_CHAR (PT
- 1) == '\n')
460 DEFUN ("eolp", Feolp
, Seolp
, 0, 0, 0,
461 "Return T if point is at the end of a line.\n\
462 `End of a line' includes point being at the end of the buffer.")
465 if (PT
== ZV
|| FETCH_CHAR (PT
) == '\n')
470 DEFUN ("char-after", Fchar_after
, Schar_after
, 1, 1, 0,
471 "Return character in current buffer at position POS.\n\
472 POS is an integer or a buffer pointer.\n\
473 If POS is out of range, the value is nil.")
477 register Lisp_Object val
;
480 CHECK_NUMBER_COERCE_MARKER (pos
, 0);
483 if (n
< BEGV
|| n
>= ZV
) return Qnil
;
485 XSETFASTINT (val
, FETCH_CHAR (n
));
489 DEFUN ("user-login-name", Fuser_login_name
, Suser_login_name
, 0, 1, 0,
490 "Return the name under which the user logged in, as a string.\n\
491 This is based on the effective uid, not the real uid.\n\
492 Also, if the environment variable LOGNAME or USER is set,\n\
493 that determines the value of this function.\n\n\
494 If optional argument UID is an integer, return the login name of the user\n\
495 with that uid, or nil if there is no such user.")
501 /* Set up the user name info if we didn't do it before.
502 (That can happen if Emacs is dumpable
503 but you decide to run `temacs -l loadup' and not dump. */
504 if (INTEGERP (Vuser_login_name
))
508 return Vuser_login_name
;
510 CHECK_NUMBER (uid
, 0);
511 pw
= (struct passwd
*) getpwuid (XINT (uid
));
512 return (pw
? build_string (pw
->pw_name
) : Qnil
);
515 DEFUN ("user-real-login-name", Fuser_real_login_name
, Suser_real_login_name
,
517 "Return the name of the user's real uid, as a string.\n\
518 This ignores the environment variables LOGNAME and USER, so it differs from\n\
519 `user-login-name' when running under `su'.")
522 /* Set up the user name info if we didn't do it before.
523 (That can happen if Emacs is dumpable
524 but you decide to run `temacs -l loadup' and not dump. */
525 if (INTEGERP (Vuser_login_name
))
527 return Vuser_real_login_name
;
530 DEFUN ("user-uid", Fuser_uid
, Suser_uid
, 0, 0, 0,
531 "Return the effective uid of Emacs, as an integer.")
534 return make_number (geteuid ());
537 DEFUN ("user-real-uid", Fuser_real_uid
, Suser_real_uid
, 0, 0, 0,
538 "Return the real uid of Emacs, as an integer.")
541 return make_number (getuid ());
544 DEFUN ("user-full-name", Fuser_full_name
, Suser_full_name
, 0, 0, 0,
545 "Return the full name of the user logged in, as a string.")
548 return Vuser_full_name
;
551 DEFUN ("system-name", Fsystem_name
, Ssystem_name
, 0, 0, 0,
552 "Return the name of the machine you are running on, as a string.")
558 /* For the benefit of callers who don't want to include lisp.h */
562 return (char *) XSTRING (Vsystem_name
)->data
;
565 DEFUN ("emacs-pid", Femacs_pid
, Semacs_pid
, 0, 0, 0,
566 "Return the process ID of Emacs, as an integer.")
569 return make_number (getpid ());
572 DEFUN ("current-time", Fcurrent_time
, Scurrent_time
, 0, 0, 0,
573 "Return the current time, as the number of seconds since 1970-01-01 00:00:00.\n\
574 The time is returned as a list of three integers. The first has the\n\
575 most significant 16 bits of the seconds, while the second has the\n\
576 least significant 16 bits. The third integer gives the microsecond\n\
579 The microsecond count is zero on systems that do not provide\n\
580 resolution finer than a second.")
584 Lisp_Object result
[3];
587 XSETINT (result
[0], (EMACS_SECS (t
) >> 16) & 0xffff);
588 XSETINT (result
[1], (EMACS_SECS (t
) >> 0) & 0xffff);
589 XSETINT (result
[2], EMACS_USECS (t
));
591 return Flist (3, result
);
596 lisp_time_argument (specified_time
, result
)
597 Lisp_Object specified_time
;
600 if (NILP (specified_time
))
601 return time (result
) != -1;
604 Lisp_Object high
, low
;
605 high
= Fcar (specified_time
);
606 CHECK_NUMBER (high
, 0);
607 low
= Fcdr (specified_time
);
610 CHECK_NUMBER (low
, 0);
611 *result
= (XINT (high
) << 16) + (XINT (low
) & 0xffff);
612 return *result
>> 16 == XINT (high
);
616 DEFUN ("format-time-string", Fformat_time_string
, Sformat_time_string
, 1, 2, 0,
617 "Use FORMAT-STRING to format the time TIME.\n\
618 TIME is specified as (HIGH LOW . IGNORED) or (HIGH . LOW), as from\n\
619 `current-time' and `file-attributes'.\n\
620 FORMAT-STRING may contain %-sequences to substitute parts of the time.\n\
621 %a is replaced by the abbreviated name of the day of week.\n\
622 %A is replaced by the full name of the day of week.\n\
623 %b is replaced by the abbreviated name of the month.\n\
624 %B is replaced by the full name of the month.\n\
625 %c stands for the preferred date/time format of the C locale.\n\
626 %d is replaced by the day of month, zero-padded.\n\
627 %D is a synonym for \"%m/%d/%y\".\n\
628 %e is replaced by the day of month, blank-padded.\n\
629 %h is a synonym for \"%b\".\n\
630 %H is replaced by the hour (00-23).\n\
631 %I is replaced by the hour (00-12).\n\
632 %j is replaced by the day of the year (001-366).\n\
633 %k is replaced by the hour (0-23), blank padded.\n\
634 %l is replaced by the hour (1-12), blank padded.\n\
635 %m is replaced by the month (01-12).\n\
636 %M is replaced by the minute (00-59).\n\
637 %n is a synonym for \"\\n\".\n\
638 %p is replaced by AM or PM, as appropriate.\n\
639 %r is a synonym for \"%I:%M:%S %p\".\n\
640 %R is a synonym for \"%H:%M\".\n\
641 %S is replaced by the second (00-60).\n\
642 %t is a synonym for \"\\t\".\n\
643 %T is a synonym for \"%H:%M:%S\".\n\
644 %U is replaced by the week of the year (00-53), first day of week is Sunday.\n\
645 %w is replaced by the day of week (0-6), Sunday is day 0.\n\
646 %W is replaced by the week of the year (00-53), first day of week is Monday.\n\
647 %x is a locale-specific synonym, which defaults to \"%D\" in the C locale.\n\
648 %X is a locale-specific synonym, which defaults to \"%T\" in the C locale.\n\
649 %y is replaced by the year without century (00-99).\n\
650 %Y is replaced by the year with century.\n\
651 %Z is replaced by the time zone abbreviation.\n\
653 The number of options reflects the `strftime' function.")
654 (format_string
, time
)
655 Lisp_Object format_string
, time
;
660 CHECK_STRING (format_string
, 1);
662 if (! lisp_time_argument (time
, &value
))
663 error ("Invalid time specification");
665 /* This is probably enough. */
666 size
= XSTRING (format_string
)->size
* 6 + 50;
670 char *buf
= (char *) alloca (size
);
672 if (emacs_strftime (buf
, size
, XSTRING (format_string
)->data
,
675 return build_string (buf
);
676 /* If buffer was too small, make it bigger. */
681 DEFUN ("decode-time", Fdecode_time
, Sdecode_time
, 0, 1, 0,
682 "Decode a time value as (SEC MINUTE HOUR DAY MONTH YEAR DOW DST ZONE).\n\
683 The optional SPECIFIED-TIME should be a list of (HIGH LOW . IGNORED)\n\
684 or (HIGH . LOW), as from `current-time' and `file-attributes', or `nil'\n\
685 to use the current time. The list has the following nine members:\n\
686 SEC is an integer between 0 and 60; SEC is 60 for a leap second, which\n\
687 only some operating systems support. MINUTE is an integer between 0 and 59.\n\
688 HOUR is an integer between 0 and 23. DAY is an integer between 1 and 31.\n\
689 MONTH is an integer between 1 and 12. YEAR is an integer indicating the\n\
690 four-digit year. DOW is the day of week, an integer between 0 and 6, where\n\
691 0 is Sunday. DST is t if daylight savings time is effect, otherwise nil.\n\
692 ZONE is an integer indicating the number of seconds east of Greenwich.\n\
693 \(Note that Common Lisp has different meanings for DOW and ZONE.)")
695 Lisp_Object specified_time
;
699 struct tm
*decoded_time
;
700 Lisp_Object list_args
[9];
702 if (! lisp_time_argument (specified_time
, &time_spec
))
703 error ("Invalid time specification");
705 decoded_time
= localtime (&time_spec
);
706 XSETFASTINT (list_args
[0], decoded_time
->tm_sec
);
707 XSETFASTINT (list_args
[1], decoded_time
->tm_min
);
708 XSETFASTINT (list_args
[2], decoded_time
->tm_hour
);
709 XSETFASTINT (list_args
[3], decoded_time
->tm_mday
);
710 XSETFASTINT (list_args
[4], decoded_time
->tm_mon
+ 1);
711 XSETINT (list_args
[5], decoded_time
->tm_year
+ 1900);
712 XSETFASTINT (list_args
[6], decoded_time
->tm_wday
);
713 list_args
[7] = (decoded_time
->tm_isdst
)? Qt
: Qnil
;
715 /* Make a copy, in case gmtime modifies the struct. */
716 save_tm
= *decoded_time
;
717 decoded_time
= gmtime (&time_spec
);
718 if (decoded_time
== 0)
721 XSETINT (list_args
[8], tm_diff (&save_tm
, decoded_time
));
722 return Flist (9, list_args
);
725 DEFUN ("encode-time", Fencode_time
, Sencode_time
, 6, MANY
, 0,
726 "Convert SECOND, MINUTE, HOUR, DAY, MONTH, YEAR and ZONE to internal time.\n\
727 This is the reverse operation of `decode-time', which see.\n\
728 ZONE defaults to the current time zone rule. This can\n\
729 be a string or t (as from `set-time-zone-rule'), or it can be a list\n\
730 (as from `current-time-zone') or an integer (as from `decode-time')\n\
731 applied without consideration for daylight savings time.\n\
733 You can pass more than 7 arguments; then the first six arguments\n\
734 are used as SECOND through YEAR, and the *last* argument is used as ZONE.\n\
735 The intervening arguments are ignored.\n\
736 This feature lets (apply 'encode-time (decode-time ...)) work.\n\
738 Out-of-range values for SEC, MINUTE, HOUR, DAY, or MONTH are allowed;\n\
739 for example, a DAY of 0 means the day preceding the given month.\n\
740 Year numbers less than 100 are treated just like other year numbers.\n\
741 If you want them to stand for years in this century, you must do that yourself.")
744 register Lisp_Object
*args
;
748 Lisp_Object zone
= (nargs
> 6)? args
[nargs
- 1] : Qnil
;
750 CHECK_NUMBER (args
[0], 0); /* second */
751 CHECK_NUMBER (args
[1], 1); /* minute */
752 CHECK_NUMBER (args
[2], 2); /* hour */
753 CHECK_NUMBER (args
[3], 3); /* day */
754 CHECK_NUMBER (args
[4], 4); /* month */
755 CHECK_NUMBER (args
[5], 5); /* year */
757 tm
.tm_sec
= XINT (args
[0]);
758 tm
.tm_min
= XINT (args
[1]);
759 tm
.tm_hour
= XINT (args
[2]);
760 tm
.tm_mday
= XINT (args
[3]);
761 tm
.tm_mon
= XINT (args
[4]) - 1;
762 tm
.tm_year
= XINT (args
[5]) - 1900;
773 char **oldenv
= environ
, **newenv
;
777 else if (STRINGP (zone
))
778 tzstring
= (char *) XSTRING (zone
)->data
;
779 else if (INTEGERP (zone
))
781 int abszone
= abs (XINT (zone
));
782 sprintf (tzbuf
, "XXX%s%d:%02d:%02d", "-" + (XINT (zone
) < 0),
783 abszone
/ (60*60), (abszone
/60) % 60, abszone
% 60);
787 error ("Invalid time zone specification");
789 /* Set TZ before calling mktime; merely adjusting mktime's returned
790 value doesn't suffice, since that would mishandle leap seconds. */
791 set_time_zone_rule (tzstring
);
795 /* Restore TZ to previous value. */
799 #ifdef LOCALTIME_CACHE
804 if (time
== (time_t) -1)
805 error ("Specified time is not representable");
807 return make_time (time
);
810 DEFUN ("current-time-string", Fcurrent_time_string
, Scurrent_time_string
, 0, 1, 0,
811 "Return the current time, as a human-readable string.\n\
812 Programs can use this function to decode a time,\n\
813 since the number of columns in each field is fixed.\n\
814 The format is `Sun Sep 16 01:03:52 1973'.\n\
815 If an argument is given, it specifies a time to format\n\
816 instead of the current time. The argument should have the form:\n\
819 (HIGH LOW . IGNORED).\n\
820 Thus, you can use times obtained from `current-time'\n\
821 and from `file-attributes'.")
823 Lisp_Object specified_time
;
829 if (! lisp_time_argument (specified_time
, &value
))
831 tem
= (char *) ctime (&value
);
833 strncpy (buf
, tem
, 24);
836 return build_string (buf
);
839 #define TM_YEAR_BASE 1900
841 /* Yield A - B, measured in seconds.
842 This function is copied from the GNU C Library. */
847 /* Compute intervening leap days correctly even if year is negative.
848 Take care to avoid int overflow in leap day calculations,
849 but it's OK to assume that A and B are close to each other. */
850 int a4
= (a
->tm_year
>> 2) + (TM_YEAR_BASE
>> 2) - ! (a
->tm_year
& 3);
851 int b4
= (b
->tm_year
>> 2) + (TM_YEAR_BASE
>> 2) - ! (b
->tm_year
& 3);
852 int a100
= a4
/ 25 - (a4
% 25 < 0);
853 int b100
= b4
/ 25 - (b4
% 25 < 0);
854 int a400
= a100
>> 2;
855 int b400
= b100
>> 2;
856 int intervening_leap_days
= (a4
- b4
) - (a100
- b100
) + (a400
- b400
);
857 int years
= a
->tm_year
- b
->tm_year
;
858 int days
= (365 * years
+ intervening_leap_days
859 + (a
->tm_yday
- b
->tm_yday
));
860 return (60 * (60 * (24 * days
+ (a
->tm_hour
- b
->tm_hour
))
861 + (a
->tm_min
- b
->tm_min
))
862 + (a
->tm_sec
- b
->tm_sec
));
865 DEFUN ("current-time-zone", Fcurrent_time_zone
, Scurrent_time_zone
, 0, 1, 0,
866 "Return the offset and name for the local time zone.\n\
867 This returns a list of the form (OFFSET NAME).\n\
868 OFFSET is an integer number of seconds ahead of UTC (east of Greenwich).\n\
869 A negative value means west of Greenwich.\n\
870 NAME is a string giving the name of the time zone.\n\
871 If an argument is given, it specifies when the time zone offset is determined\n\
872 instead of using the current time. The argument should have the form:\n\
875 (HIGH LOW . IGNORED).\n\
876 Thus, you can use times obtained from `current-time'\n\
877 and from `file-attributes'.\n\
879 Some operating systems cannot provide all this information to Emacs;\n\
880 in this case, `current-time-zone' returns a list containing nil for\n\
881 the data it can't find.")
883 Lisp_Object specified_time
;
888 if (lisp_time_argument (specified_time
, &value
)
889 && (t
= gmtime (&value
)) != 0)
895 gmt
= *t
; /* Make a copy, in case localtime modifies *t. */
896 t
= localtime (&value
);
897 offset
= tm_diff (t
, &gmt
);
901 s
= (char *)t
->tm_zone
;
902 #else /* not HAVE_TM_ZONE */
904 if (t
->tm_isdst
== 0 || t
->tm_isdst
== 1)
905 s
= tzname
[t
->tm_isdst
];
907 #endif /* not HAVE_TM_ZONE */
910 /* No local time zone name is available; use "+-NNNN" instead. */
911 int am
= (offset
< 0 ? -offset
: offset
) / 60;
912 sprintf (buf
, "%c%02d%02d", (offset
< 0 ? '-' : '+'), am
/60, am
%60);
915 return Fcons (make_number (offset
), Fcons (build_string (s
), Qnil
));
918 return Fmake_list (2, Qnil
);
921 /* This holds the value of `environ' produced by the previous
922 call to Fset_time_zone_rule, or 0 if Fset_time_zone_rule
923 has never been called. */
924 static char **environbuf
;
926 DEFUN ("set-time-zone-rule", Fset_time_zone_rule
, Sset_time_zone_rule
, 1, 1, 0,
927 "Set the local time zone using TZ, a string specifying a time zone rule.\n\
928 If TZ is nil, use implementation-defined default time zone information.\n\
929 If TZ is t, use Universal Time.")
941 CHECK_STRING (tz
, 0);
942 tzstring
= (char *) XSTRING (tz
)->data
;
945 set_time_zone_rule (tzstring
);
948 environbuf
= environ
;
953 /* These two values are known to load tz files in buggy implementations.
954 Their values shouldn't matter in non-buggy implementations.
955 We don't use string literals for these strings,
956 since if a string in the environment is in readonly
957 storage, it runs afoul of bugs in SVR4 and Solaris 2.3.
958 See Sun bugs 1113095 and 1114114, ``Timezone routines
959 improperly modify environment''. */
961 static char set_time_zone_rule_tz1
[] = "TZ=GMT0";
962 static char set_time_zone_rule_tz2
[] = "TZ=GMT1";
964 /* Set the local time zone rule to TZSTRING.
965 This allocates memory into `environ', which it is the caller's
966 responsibility to free. */
968 set_time_zone_rule (tzstring
)
972 char **from
, **to
, **newenv
;
974 /* Make the ENVIRON vector longer with room for TZSTRING. */
975 for (from
= environ
; *from
; from
++)
977 envptrs
= from
- environ
+ 2;
978 newenv
= to
= (char **) xmalloc (envptrs
* sizeof (char *)
979 + (tzstring
? strlen (tzstring
) + 4 : 0));
981 /* Add TZSTRING to the end of environ, as a value for TZ. */
984 char *t
= (char *) (to
+ envptrs
);
986 strcat (t
, tzstring
);
990 /* Copy the old environ vector elements into NEWENV,
991 but don't copy the TZ variable.
992 So we have only one definition of TZ, which came from TZSTRING. */
993 for (from
= environ
; *from
; from
++)
994 if (strncmp (*from
, "TZ=", 3) != 0)
1000 /* If we do have a TZSTRING, NEWENV points to the vector slot where
1001 the TZ variable is stored. If we do not have a TZSTRING,
1002 TO points to the vector slot which has the terminating null. */
1004 #ifdef LOCALTIME_CACHE
1006 /* In SunOS 4.1.3_U1 and 4.1.4, if TZ has a value like
1007 "US/Pacific" that loads a tz file, then changes to a value like
1008 "XXX0" that does not load a tz file, and then changes back to
1009 its original value, the last change is (incorrectly) ignored.
1010 Also, if TZ changes twice in succession to values that do
1011 not load a tz file, tzset can dump core (see Sun bug#1225179).
1012 The following code works around these bugs. */
1016 /* Temporarily set TZ to a value that loads a tz file
1017 and that differs from tzstring. */
1019 *newenv
= (strcmp (tzstring
, set_time_zone_rule_tz1
+ 3) == 0
1020 ? set_time_zone_rule_tz2
: set_time_zone_rule_tz1
);
1026 /* The implied tzstring is unknown, so temporarily set TZ to
1027 two different values that each load a tz file. */
1028 *to
= set_time_zone_rule_tz1
;
1031 *to
= set_time_zone_rule_tz2
;
1036 /* Now TZ has the desired value, and tzset can be invoked safely. */
1051 /* Callers passing one argument to Finsert need not gcpro the
1052 argument "array", since the only element of the array will
1053 not be used after calling insert or insert_from_string, so
1054 we don't care if it gets trashed. */
1056 DEFUN ("insert", Finsert
, Sinsert
, 0, MANY
, 0,
1057 "Insert the arguments, either strings or characters, at point.\n\
1058 Point moves forward so that it ends up after the inserted text.\n\
1059 Any other markers at the point of insertion remain before the text.")
1062 register Lisp_Object
*args
;
1064 register int argnum
;
1065 register Lisp_Object tem
;
1068 for (argnum
= 0; argnum
< nargs
; argnum
++)
1074 str
[0] = XINT (tem
);
1077 else if (STRINGP (tem
))
1079 insert_from_string (tem
, 0, XSTRING (tem
)->size
, 0);
1083 tem
= wrong_type_argument (Qchar_or_string_p
, tem
);
1091 DEFUN ("insert-and-inherit", Finsert_and_inherit
, Sinsert_and_inherit
,
1093 "Insert the arguments at point, inheriting properties from adjoining text.\n\
1094 Point moves forward so that it ends up after the inserted text.\n\
1095 Any other markers at the point of insertion remain before the text.")
1098 register Lisp_Object
*args
;
1100 register int argnum
;
1101 register Lisp_Object tem
;
1104 for (argnum
= 0; argnum
< nargs
; argnum
++)
1110 str
[0] = XINT (tem
);
1111 insert_and_inherit (str
, 1);
1113 else if (STRINGP (tem
))
1115 insert_from_string (tem
, 0, XSTRING (tem
)->size
, 1);
1119 tem
= wrong_type_argument (Qchar_or_string_p
, tem
);
1127 DEFUN ("insert-before-markers", Finsert_before_markers
, Sinsert_before_markers
, 0, MANY
, 0,
1128 "Insert strings or characters at point, relocating markers after the text.\n\
1129 Point moves forward so that it ends up after the inserted text.\n\
1130 Any other markers at the point of insertion also end up after the text.")
1133 register Lisp_Object
*args
;
1135 register int argnum
;
1136 register Lisp_Object tem
;
1139 for (argnum
= 0; argnum
< nargs
; argnum
++)
1145 str
[0] = XINT (tem
);
1146 insert_before_markers (str
, 1);
1148 else if (STRINGP (tem
))
1150 insert_from_string_before_markers (tem
, 0, XSTRING (tem
)->size
, 0);
1154 tem
= wrong_type_argument (Qchar_or_string_p
, tem
);
1162 DEFUN ("insert-before-markers-and-inherit", Finsert_and_inherit_before_markers
,
1163 Sinsert_and_inherit_before_markers
, 0, MANY
, 0,
1164 "Insert text at point, relocating markers and inheriting properties.\n\
1165 Point moves forward so that it ends up after the inserted text.\n\
1166 Any other markers at the point of insertion also end up after the text.")
1169 register Lisp_Object
*args
;
1171 register int argnum
;
1172 register Lisp_Object tem
;
1175 for (argnum
= 0; argnum
< nargs
; argnum
++)
1181 str
[0] = XINT (tem
);
1182 insert_before_markers_and_inherit (str
, 1);
1184 else if (STRINGP (tem
))
1186 insert_from_string_before_markers (tem
, 0, XSTRING (tem
)->size
, 1);
1190 tem
= wrong_type_argument (Qchar_or_string_p
, tem
);
1198 DEFUN ("insert-char", Finsert_char
, Sinsert_char
, 2, 3, 0,
1199 "Insert COUNT (second arg) copies of CHARACTER (first arg).\n\
1200 Point and all markers are affected as in the function `insert'.\n\
1201 Both arguments are required.\n\
1202 The optional third arg INHERIT, if non-nil, says to inherit text properties\n\
1203 from adjoining text, if those properties are sticky.")
1204 (character
, count
, inherit
)
1205 Lisp_Object character
, count
, inherit
;
1207 register unsigned char *string
;
1208 register int strlen
;
1211 CHECK_NUMBER (character
, 0);
1212 CHECK_NUMBER (count
, 1);
1217 strlen
= min (n
, 256);
1218 string
= (unsigned char *) alloca (strlen
);
1219 for (i
= 0; i
< strlen
; i
++)
1220 string
[i
] = XFASTINT (character
);
1223 if (!NILP (inherit
))
1224 insert_and_inherit (string
, strlen
);
1226 insert (string
, strlen
);
1231 if (!NILP (inherit
))
1232 insert_and_inherit (string
, n
);
1240 /* Making strings from buffer contents. */
1242 /* Return a Lisp_String containing the text of the current buffer from
1243 START to END. If text properties are in use and the current buffer
1244 has properties in the range specified, the resulting string will also
1245 have them, if PROPS is nonzero.
1247 We don't want to use plain old make_string here, because it calls
1248 make_uninit_string, which can cause the buffer arena to be
1249 compacted. make_string has no way of knowing that the data has
1250 been moved, and thus copies the wrong data into the string. This
1251 doesn't effect most of the other users of make_string, so it should
1252 be left as is. But we should use this function when conjuring
1253 buffer substrings. */
1256 make_buffer_string (start
, end
, props
)
1260 Lisp_Object result
, tem
, tem1
;
1262 if (start
< GPT
&& GPT
< end
)
1265 result
= make_uninit_string (end
- start
);
1266 bcopy (&FETCH_CHAR (start
), XSTRING (result
)->data
, end
- start
);
1268 /* If desired, update and copy the text properties. */
1269 #ifdef USE_TEXT_PROPERTIES
1272 update_buffer_properties (start
, end
);
1274 tem
= Fnext_property_change (make_number (start
), Qnil
, make_number (end
));
1275 tem1
= Ftext_properties_at (make_number (start
), Qnil
);
1277 if (XINT (tem
) != end
|| !NILP (tem1
))
1278 copy_intervals_to_string (result
, current_buffer
, start
, end
- start
);
1285 /* Call Vbuffer_access_fontify_functions for the range START ... END
1286 in the current buffer, if necessary. */
1289 update_buffer_properties (start
, end
)
1292 #ifdef USE_TEXT_PROPERTIES
1293 /* If this buffer has some access functions,
1294 call them, specifying the range of the buffer being accessed. */
1295 if (!NILP (Vbuffer_access_fontify_functions
))
1297 Lisp_Object args
[3];
1300 args
[0] = Qbuffer_access_fontify_functions
;
1301 XSETINT (args
[1], start
);
1302 XSETINT (args
[2], end
);
1304 /* But don't call them if we can tell that the work
1305 has already been done. */
1306 if (!NILP (Vbuffer_access_fontified_property
))
1308 tem
= Ftext_property_any (args
[1], args
[2],
1309 Vbuffer_access_fontified_property
,
1312 Frun_hook_with_args (3, args
);
1315 Frun_hook_with_args (3, args
);
1320 DEFUN ("buffer-substring", Fbuffer_substring
, Sbuffer_substring
, 2, 2, 0,
1321 "Return the contents of part of the current buffer as a string.\n\
1322 The two arguments START and END are character positions;\n\
1323 they can be in either order.")
1325 Lisp_Object start
, end
;
1329 validate_region (&start
, &end
);
1333 return make_buffer_string (b
, e
, 1);
1336 DEFUN ("buffer-substring-no-properties", Fbuffer_substring_no_properties
,
1337 Sbuffer_substring_no_properties
, 2, 2, 0,
1338 "Return the characters of part of the buffer, without the text properties.\n\
1339 The two arguments START and END are character positions;\n\
1340 they can be in either order.")
1342 Lisp_Object start
, end
;
1346 validate_region (&start
, &end
);
1350 return make_buffer_string (b
, e
, 0);
1353 DEFUN ("buffer-string", Fbuffer_string
, Sbuffer_string
, 0, 0, 0,
1354 "Return the contents of the current buffer as a string.\n\
1355 If narrowing is in effect, this function returns only the visible part\n\
1359 return make_buffer_string (BEGV
, ZV
, 1);
1362 DEFUN ("insert-buffer-substring", Finsert_buffer_substring
, Sinsert_buffer_substring
,
1364 "Insert before point a substring of the contents of buffer BUFFER.\n\
1365 BUFFER may be a buffer or a buffer name.\n\
1366 Arguments START and END are character numbers specifying the substring.\n\
1367 They default to the beginning and the end of BUFFER.")
1369 Lisp_Object buf
, start
, end
;
1371 register int b
, e
, temp
;
1372 register struct buffer
*bp
, *obuf
;
1375 buffer
= Fget_buffer (buf
);
1378 bp
= XBUFFER (buffer
);
1379 if (NILP (bp
->name
))
1380 error ("Selecting deleted buffer");
1386 CHECK_NUMBER_COERCE_MARKER (start
, 0);
1393 CHECK_NUMBER_COERCE_MARKER (end
, 1);
1398 temp
= b
, b
= e
, e
= temp
;
1400 if (!(BUF_BEGV (bp
) <= b
&& e
<= BUF_ZV (bp
)))
1401 args_out_of_range (start
, end
);
1403 obuf
= current_buffer
;
1404 set_buffer_internal_1 (bp
);
1405 update_buffer_properties (b
, e
);
1406 set_buffer_internal_1 (obuf
);
1408 insert_from_buffer (bp
, b
, e
- b
, 0);
1412 DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings
, Scompare_buffer_substrings
,
1414 "Compare two substrings of two buffers; return result as number.\n\
1415 the value is -N if first string is less after N-1 chars,\n\
1416 +N if first string is greater after N-1 chars, or 0 if strings match.\n\
1417 Each substring is represented as three arguments: BUFFER, START and END.\n\
1418 That makes six args in all, three for each substring.\n\n\
1419 The value of `case-fold-search' in the current buffer\n\
1420 determines whether case is significant or ignored.")
1421 (buffer1
, start1
, end1
, buffer2
, start2
, end2
)
1422 Lisp_Object buffer1
, start1
, end1
, buffer2
, start2
, end2
;
1424 register int begp1
, endp1
, begp2
, endp2
, temp
, len1
, len2
, length
, i
;
1425 register struct buffer
*bp1
, *bp2
;
1426 register Lisp_Object
*trt
1427 = (!NILP (current_buffer
->case_fold_search
)
1428 ? XCHAR_TABLE (current_buffer
->case_canon_table
)->contents
: 0);
1430 /* Find the first buffer and its substring. */
1433 bp1
= current_buffer
;
1437 buf1
= Fget_buffer (buffer1
);
1440 bp1
= XBUFFER (buf1
);
1441 if (NILP (bp1
->name
))
1442 error ("Selecting deleted buffer");
1446 begp1
= BUF_BEGV (bp1
);
1449 CHECK_NUMBER_COERCE_MARKER (start1
, 1);
1450 begp1
= XINT (start1
);
1453 endp1
= BUF_ZV (bp1
);
1456 CHECK_NUMBER_COERCE_MARKER (end1
, 2);
1457 endp1
= XINT (end1
);
1461 temp
= begp1
, begp1
= endp1
, endp1
= temp
;
1463 if (!(BUF_BEGV (bp1
) <= begp1
1465 && endp1
<= BUF_ZV (bp1
)))
1466 args_out_of_range (start1
, end1
);
1468 /* Likewise for second substring. */
1471 bp2
= current_buffer
;
1475 buf2
= Fget_buffer (buffer2
);
1478 bp2
= XBUFFER (buf2
);
1479 if (NILP (bp2
->name
))
1480 error ("Selecting deleted buffer");
1484 begp2
= BUF_BEGV (bp2
);
1487 CHECK_NUMBER_COERCE_MARKER (start2
, 4);
1488 begp2
= XINT (start2
);
1491 endp2
= BUF_ZV (bp2
);
1494 CHECK_NUMBER_COERCE_MARKER (end2
, 5);
1495 endp2
= XINT (end2
);
1499 temp
= begp2
, begp2
= endp2
, endp2
= temp
;
1501 if (!(BUF_BEGV (bp2
) <= begp2
1503 && endp2
<= BUF_ZV (bp2
)))
1504 args_out_of_range (start2
, end2
);
1506 len1
= endp1
- begp1
;
1507 len2
= endp2
- begp2
;
1512 for (i
= 0; i
< length
; i
++)
1514 int c1
= *BUF_CHAR_ADDRESS (bp1
, begp1
+ i
);
1515 int c2
= *BUF_CHAR_ADDRESS (bp2
, begp2
+ i
);
1522 return make_number (- 1 - i
);
1524 return make_number (i
+ 1);
1527 /* The strings match as far as they go.
1528 If one is shorter, that one is less. */
1530 return make_number (length
+ 1);
1531 else if (length
< len2
)
1532 return make_number (- length
- 1);
1534 /* Same length too => they are equal. */
1535 return make_number (0);
1539 subst_char_in_region_unwind (arg
)
1542 return current_buffer
->undo_list
= arg
;
1546 subst_char_in_region_unwind_1 (arg
)
1549 return current_buffer
->filename
= arg
;
1552 DEFUN ("subst-char-in-region", Fsubst_char_in_region
,
1553 Ssubst_char_in_region
, 4, 5, 0,
1554 "From START to END, replace FROMCHAR with TOCHAR each time it occurs.\n\
1555 If optional arg NOUNDO is non-nil, don't record this change for undo\n\
1556 and don't mark the buffer as really changed.")
1557 (start
, end
, fromchar
, tochar
, noundo
)
1558 Lisp_Object start
, end
, fromchar
, tochar
, noundo
;
1560 register int pos
, stop
, look
;
1562 int count
= specpdl_ptr
- specpdl
;
1564 validate_region (&start
, &end
);
1565 CHECK_NUMBER (fromchar
, 2);
1566 CHECK_NUMBER (tochar
, 3);
1570 look
= XINT (fromchar
);
1572 /* If we don't want undo, turn off putting stuff on the list.
1573 That's faster than getting rid of things,
1574 and it prevents even the entry for a first change.
1575 Also inhibit locking the file. */
1578 record_unwind_protect (subst_char_in_region_unwind
,
1579 current_buffer
->undo_list
);
1580 current_buffer
->undo_list
= Qt
;
1581 /* Don't do file-locking. */
1582 record_unwind_protect (subst_char_in_region_unwind_1
,
1583 current_buffer
->filename
);
1584 current_buffer
->filename
= Qnil
;
1589 if (FETCH_CHAR (pos
) == look
)
1593 modify_region (current_buffer
, XINT (start
), stop
);
1595 if (! NILP (noundo
))
1597 if (MODIFF
- 1 == SAVE_MODIFF
)
1599 if (MODIFF
- 1 == current_buffer
->auto_save_modified
)
1600 current_buffer
->auto_save_modified
++;
1607 record_change (pos
, 1);
1608 FETCH_CHAR (pos
) = XINT (tochar
);
1614 signal_after_change (XINT (start
),
1615 stop
- XINT (start
), stop
- XINT (start
));
1617 unbind_to (count
, Qnil
);
1621 DEFUN ("translate-region", Ftranslate_region
, Stranslate_region
, 3, 3, 0,
1622 "From START to END, translate characters according to TABLE.\n\
1623 TABLE is a string; the Nth character in it is the mapping\n\
1624 for the character with code N. Returns the number of characters changed.")
1628 register Lisp_Object table
;
1630 register int pos
, stop
; /* Limits of the region. */
1631 register unsigned char *tt
; /* Trans table. */
1632 register int oc
; /* Old character. */
1633 register int nc
; /* New character. */
1634 int cnt
; /* Number of changes made. */
1635 Lisp_Object z
; /* Return. */
1636 int size
; /* Size of translate table. */
1638 validate_region (&start
, &end
);
1639 CHECK_STRING (table
, 2);
1641 size
= XSTRING (table
)->size
;
1642 tt
= XSTRING (table
)->data
;
1646 modify_region (current_buffer
, pos
, stop
);
1649 for (; pos
< stop
; ++pos
)
1651 oc
= FETCH_CHAR (pos
);
1657 record_change (pos
, 1);
1658 FETCH_CHAR (pos
) = nc
;
1659 signal_after_change (pos
, 1, 1);
1665 XSETFASTINT (z
, cnt
);
1669 DEFUN ("delete-region", Fdelete_region
, Sdelete_region
, 2, 2, "r",
1670 "Delete the text between point and mark.\n\
1671 When called from a program, expects two arguments,\n\
1672 positions (integers or markers) specifying the stretch to be deleted.")
1674 Lisp_Object start
, end
;
1676 validate_region (&start
, &end
);
1677 del_range (XINT (start
), XINT (end
));
1681 DEFUN ("widen", Fwiden
, Swiden
, 0, 0, "",
1682 "Remove restrictions (narrowing) from current buffer.\n\
1683 This allows the buffer's full text to be seen and edited.")
1687 SET_BUF_ZV (current_buffer
, Z
);
1688 current_buffer
->clip_changed
= 1;
1689 /* Changing the buffer bounds invalidates any recorded current column. */
1690 invalidate_current_column ();
1694 DEFUN ("narrow-to-region", Fnarrow_to_region
, Snarrow_to_region
, 2, 2, "r",
1695 "Restrict editing in this buffer to the current region.\n\
1696 The rest of the text becomes temporarily invisible and untouchable\n\
1697 but is not deleted; if you save the buffer in a file, the invisible\n\
1698 text is included in the file. \\[widen] makes all visible again.\n\
1699 See also `save-restriction'.\n\
1701 When calling from a program, pass two arguments; positions (integers\n\
1702 or markers) bounding the text that should remain visible.")
1704 register Lisp_Object start
, end
;
1706 CHECK_NUMBER_COERCE_MARKER (start
, 0);
1707 CHECK_NUMBER_COERCE_MARKER (end
, 1);
1709 if (XINT (start
) > XINT (end
))
1712 tem
= start
; start
= end
; end
= tem
;
1715 if (!(BEG
<= XINT (start
) && XINT (start
) <= XINT (end
) && XINT (end
) <= Z
))
1716 args_out_of_range (start
, end
);
1718 BEGV
= XFASTINT (start
);
1719 SET_BUF_ZV (current_buffer
, XFASTINT (end
));
1720 if (PT
< XFASTINT (start
))
1721 SET_PT (XFASTINT (start
));
1722 if (PT
> XFASTINT (end
))
1723 SET_PT (XFASTINT (end
));
1724 current_buffer
->clip_changed
= 1;
1725 /* Changing the buffer bounds invalidates any recorded current column. */
1726 invalidate_current_column ();
1731 save_restriction_save ()
1733 register Lisp_Object bottom
, top
;
1734 /* Note: I tried using markers here, but it does not win
1735 because insertion at the end of the saved region
1736 does not advance mh and is considered "outside" the saved region. */
1737 XSETFASTINT (bottom
, BEGV
- BEG
);
1738 XSETFASTINT (top
, Z
- ZV
);
1740 return Fcons (Fcurrent_buffer (), Fcons (bottom
, top
));
1744 save_restriction_restore (data
)
1747 register struct buffer
*buf
;
1748 register int newhead
, newtail
;
1749 register Lisp_Object tem
;
1751 buf
= XBUFFER (XCONS (data
)->car
);
1753 data
= XCONS (data
)->cdr
;
1755 tem
= XCONS (data
)->car
;
1756 newhead
= XINT (tem
);
1757 tem
= XCONS (data
)->cdr
;
1758 newtail
= XINT (tem
);
1759 if (newhead
+ newtail
> BUF_Z (buf
) - BUF_BEG (buf
))
1764 BUF_BEGV (buf
) = BUF_BEG (buf
) + newhead
;
1765 SET_BUF_ZV (buf
, BUF_Z (buf
) - newtail
);
1766 current_buffer
->clip_changed
= 1;
1768 /* If point is outside the new visible range, move it inside. */
1770 clip_to_bounds (BUF_BEGV (buf
), BUF_PT (buf
), BUF_ZV (buf
)));
1775 DEFUN ("save-restriction", Fsave_restriction
, Ssave_restriction
, 0, UNEVALLED
, 0,
1776 "Execute BODY, saving and restoring current buffer's restrictions.\n\
1777 The buffer's restrictions make parts of the beginning and end invisible.\n\
1778 \(They are set up with `narrow-to-region' and eliminated with `widen'.)\n\
1779 This special form, `save-restriction', saves the current buffer's restrictions\n\
1780 when it is entered, and restores them when it is exited.\n\
1781 So any `narrow-to-region' within BODY lasts only until the end of the form.\n\
1782 The old restrictions settings are restored\n\
1783 even in case of abnormal exit (throw or error).\n\
1785 The value returned is the value of the last form in BODY.\n\
1787 `save-restriction' can get confused if, within the BODY, you widen\n\
1788 and then make changes outside the area within the saved restrictions.\n\
1790 Note: if you are using both `save-excursion' and `save-restriction',\n\
1791 use `save-excursion' outermost:\n\
1792 (save-excursion (save-restriction ...))")
1796 register Lisp_Object val
;
1797 int count
= specpdl_ptr
- specpdl
;
1799 record_unwind_protect (save_restriction_restore
, save_restriction_save ());
1800 val
= Fprogn (body
);
1801 return unbind_to (count
, val
);
1804 /* Buffer for the most recent text displayed by Fmessage. */
1805 static char *message_text
;
1807 /* Allocated length of that buffer. */
1808 static int message_length
;
1810 DEFUN ("message", Fmessage
, Smessage
, 1, MANY
, 0,
1811 "Print a one-line message at the bottom of the screen.\n\
1812 The first argument is a format control string, and the rest are data\n\
1813 to be formatted under control of the string. See `format' for details.\n\
1815 If the first argument is nil, clear any existing message; let the\n\
1816 minibuffer contents show.")
1828 register Lisp_Object val
;
1829 val
= Fformat (nargs
, args
);
1830 /* Copy the data so that it won't move when we GC. */
1833 message_text
= (char *)xmalloc (80);
1834 message_length
= 80;
1836 if (XSTRING (val
)->size
> message_length
)
1838 message_length
= XSTRING (val
)->size
;
1839 message_text
= (char *)xrealloc (message_text
, message_length
);
1841 bcopy (XSTRING (val
)->data
, message_text
, XSTRING (val
)->size
);
1842 message2 (message_text
, XSTRING (val
)->size
);
1847 DEFUN ("message-box", Fmessage_box
, Smessage_box
, 1, MANY
, 0,
1848 "Display a message, in a dialog box if possible.\n\
1849 If a dialog box is not available, use the echo area.\n\
1850 The first argument is a format control string, and the rest are data\n\
1851 to be formatted under control of the string. See `format' for details.\n\
1853 If the first argument is nil, clear any existing message; let the\n\
1854 minibuffer contents show.")
1866 register Lisp_Object val
;
1867 val
= Fformat (nargs
, args
);
1870 Lisp_Object pane
, menu
, obj
;
1871 struct gcpro gcpro1
;
1872 pane
= Fcons (Fcons (build_string ("OK"), Qt
), Qnil
);
1874 menu
= Fcons (val
, pane
);
1875 obj
= Fx_popup_dialog (Qt
, menu
);
1879 #else /* not HAVE_MENUS */
1880 /* Copy the data so that it won't move when we GC. */
1883 message_text
= (char *)xmalloc (80);
1884 message_length
= 80;
1886 if (XSTRING (val
)->size
> message_length
)
1888 message_length
= XSTRING (val
)->size
;
1889 message_text
= (char *)xrealloc (message_text
, message_length
);
1891 bcopy (XSTRING (val
)->data
, message_text
, XSTRING (val
)->size
);
1892 message2 (message_text
, XSTRING (val
)->size
);
1894 #endif /* not HAVE_MENUS */
1898 extern Lisp_Object last_nonmenu_event
;
1901 DEFUN ("message-or-box", Fmessage_or_box
, Smessage_or_box
, 1, MANY
, 0,
1902 "Display a message in a dialog box or in the echo area.\n\
1903 If this command was invoked with the mouse, use a dialog box.\n\
1904 Otherwise, use the echo area.\n\
1905 The first argument is a format control string, and the rest are data\n\
1906 to be formatted under control of the string. See `format' for details.\n\
1908 If the first argument is nil, clear any existing message; let the\n\
1909 minibuffer contents show.")
1915 if (NILP (last_nonmenu_event
) || CONSP (last_nonmenu_event
))
1916 return Fmessage_box (nargs
, args
);
1918 return Fmessage (nargs
, args
);
1921 DEFUN ("format", Fformat
, Sformat
, 1, MANY
, 0,
1922 "Format a string out of a control-string and arguments.\n\
1923 The first argument is a control string.\n\
1924 The other arguments are substituted into it to make the result, a string.\n\
1925 It may contain %-sequences meaning to substitute the next argument.\n\
1926 %s means print a string argument. Actually, prints any object, with `princ'.\n\
1927 %d means print as number in decimal (%o octal, %x hex).\n\
1928 %e means print a number in exponential notation.\n\
1929 %f means print a number in decimal-point notation.\n\
1930 %g means print a number in exponential notation\n\
1931 or decimal-point notation, whichever uses fewer characters.\n\
1932 %c means print a number as a single character.\n\
1933 %S means print any object as an s-expression (using prin1).\n\
1934 The argument used for %d, %o, %x, %e, %f, %g or %c must be a number.\n\
1935 Use %% to put a single % into the output.")
1938 register Lisp_Object
*args
;
1940 register int n
; /* The number of the next arg to substitute */
1941 register int total
= 5; /* An estimate of the final length */
1943 register unsigned char *format
, *end
;
1945 extern char *index ();
1946 /* It should not be necessary to GCPRO ARGS, because
1947 the caller in the interpreter should take care of that. */
1949 CHECK_STRING (args
[0], 0);
1950 format
= XSTRING (args
[0])->data
;
1951 end
= format
+ XSTRING (args
[0])->size
;
1954 while (format
!= end
)
1955 if (*format
++ == '%')
1959 /* Process a numeric arg and skip it. */
1960 minlen
= atoi (format
);
1964 while ((*format
>= '0' && *format
<= '9')
1965 || *format
== '-' || *format
== ' ' || *format
== '.')
1970 else if (++n
>= nargs
)
1971 error ("Not enough arguments for format string");
1972 else if (*format
== 'S')
1974 /* For `S', prin1 the argument and then treat like a string. */
1975 register Lisp_Object tem
;
1976 tem
= Fprin1_to_string (args
[n
], Qnil
);
1980 else if (SYMBOLP (args
[n
]))
1982 XSETSTRING (args
[n
], XSYMBOL (args
[n
])->name
);
1985 else if (STRINGP (args
[n
]))
1988 if (*format
!= 's' && *format
!= 'S')
1989 error ("format specifier doesn't match argument type");
1990 total
+= XSTRING (args
[n
])->size
;
1991 /* We have to put an arbitrary limit on minlen
1992 since otherwise it could make alloca fail. */
1993 if (minlen
< XSTRING (args
[n
])->size
+ 1000)
1996 /* Would get MPV otherwise, since Lisp_Int's `point' to low memory. */
1997 else if (INTEGERP (args
[n
]) && *format
!= 's')
1999 #ifdef LISP_FLOAT_TYPE
2000 /* The following loop assumes the Lisp type indicates
2001 the proper way to pass the argument.
2002 So make sure we have a flonum if the argument should
2004 if (*format
== 'e' || *format
== 'f' || *format
== 'g')
2005 args
[n
] = Ffloat (args
[n
]);
2008 /* We have to put an arbitrary limit on minlen
2009 since otherwise it could make alloca fail. */
2013 #ifdef LISP_FLOAT_TYPE
2014 else if (FLOATP (args
[n
]) && *format
!= 's')
2016 if (! (*format
== 'e' || *format
== 'f' || *format
== 'g'))
2017 args
[n
] = Ftruncate (args
[n
]);
2019 /* We have to put an arbitrary limit on minlen
2020 since otherwise it could make alloca fail. */
2027 /* Anything but a string, convert to a string using princ. */
2028 register Lisp_Object tem
;
2029 tem
= Fprin1_to_string (args
[n
], Qt
);
2036 register int nstrings
= n
+ 1;
2038 /* Allocate twice as many strings as we have %-escapes; floats occupy
2039 two slots, and we're not sure how many of those we have. */
2040 register unsigned char **strings
2041 = (unsigned char **) alloca (2 * nstrings
* sizeof (unsigned char *));
2045 for (n
= 0; n
< nstrings
; n
++)
2048 strings
[i
++] = (unsigned char *) "";
2049 else if (INTEGERP (args
[n
]))
2050 /* We checked above that the corresponding format effector
2051 isn't %s, which would cause MPV. */
2052 strings
[i
++] = (unsigned char *) XINT (args
[n
]);
2053 #ifdef LISP_FLOAT_TYPE
2054 else if (FLOATP (args
[n
]))
2056 union { double d
; char *half
[2]; } u
;
2058 u
.d
= XFLOAT (args
[n
])->data
;
2059 strings
[i
++] = (unsigned char *) u
.half
[0];
2060 strings
[i
++] = (unsigned char *) u
.half
[1];
2064 /* The first string is treated differently
2065 because it is the format string. */
2066 strings
[i
++] = XSTRING (args
[n
])->data
;
2068 strings
[i
++] = (unsigned char *) XSTRING (args
[n
]);
2071 /* Make room in result for all the non-%-codes in the control string. */
2072 total
+= XSTRING (args
[0])->size
;
2074 /* Format it in bigger and bigger buf's until it all fits. */
2077 buf
= (char *) alloca (total
+ 1);
2080 length
= doprnt_lisp (buf
, total
+ 1, strings
[0],
2081 end
, i
-1, strings
+ 1);
2082 if (buf
[total
- 1] == 0)
2090 return make_string (buf
, length
);
2096 format1 (string1
, arg0
, arg1
, arg2
, arg3
, arg4
)
2097 EMACS_INT arg0
, arg1
, arg2
, arg3
, arg4
;
2111 doprnt (buf
, sizeof buf
, string1
, (char *)0, 5, args
);
2113 doprnt (buf
, sizeof buf
, string1
, (char *)0, 5, &string1
+ 1);
2115 return build_string (buf
);
2118 DEFUN ("char-equal", Fchar_equal
, Schar_equal
, 2, 2, 0,
2119 "Return t if two characters match, optionally ignoring case.\n\
2120 Both arguments must be characters (i.e. integers).\n\
2121 Case is ignored if `case-fold-search' is non-nil in the current buffer.")
2123 register Lisp_Object c1
, c2
;
2125 Lisp_Object
*downcase
= DOWNCASE_TABLE
;
2126 CHECK_NUMBER (c1
, 0);
2127 CHECK_NUMBER (c2
, 1);
2129 if (!NILP (current_buffer
->case_fold_search
)
2130 ? ((XINT (downcase
[0xff & XFASTINT (c1
)])
2131 == XINT (downcase
[0xff & XFASTINT (c2
)]))
2132 && (XFASTINT (c1
) & ~0xff) == (XFASTINT (c2
) & ~0xff))
2133 : XINT (c1
) == XINT (c2
))
2138 /* Transpose the markers in two regions of the current buffer, and
2139 adjust the ones between them if necessary (i.e.: if the regions
2142 Traverses the entire marker list of the buffer to do so, adding an
2143 appropriate amount to some, subtracting from some, and leaving the
2144 rest untouched. Most of this is copied from adjust_markers in insdel.c.
2146 It's the caller's job to see that (start1 <= end1 <= start2 <= end2). */
2149 transpose_markers (start1
, end1
, start2
, end2
)
2150 register int start1
, end1
, start2
, end2
;
2152 register int amt1
, amt2
, diff
, mpos
;
2153 register Lisp_Object marker
;
2155 /* Update point as if it were a marker. */
2159 TEMP_SET_PT (PT
+ (end2
- end1
));
2160 else if (PT
< start2
)
2161 TEMP_SET_PT (PT
+ (end2
- start2
) - (end1
- start1
));
2163 TEMP_SET_PT (PT
- (start2
- start1
));
2165 /* We used to adjust the endpoints here to account for the gap, but that
2166 isn't good enough. Even if we assume the caller has tried to move the
2167 gap out of our way, it might still be at start1 exactly, for example;
2168 and that places it `inside' the interval, for our purposes. The amount
2169 of adjustment is nontrivial if there's a `denormalized' marker whose
2170 position is between GPT and GPT + GAP_SIZE, so it's simpler to leave
2171 the dirty work to Fmarker_position, below. */
2173 /* The difference between the region's lengths */
2174 diff
= (end2
- start2
) - (end1
- start1
);
2176 /* For shifting each marker in a region by the length of the other
2177 * region plus the distance between the regions.
2179 amt1
= (end2
- start2
) + (start2
- end1
);
2180 amt2
= (end1
- start1
) + (start2
- end1
);
2182 for (marker
= BUF_MARKERS (current_buffer
); !NILP (marker
);
2183 marker
= XMARKER (marker
)->chain
)
2185 mpos
= Fmarker_position (marker
);
2186 if (mpos
>= start1
&& mpos
< end2
)
2190 else if (mpos
< start2
)
2194 if (mpos
> GPT
) mpos
+= GAP_SIZE
;
2195 XMARKER (marker
)->bufpos
= mpos
;
2200 DEFUN ("transpose-regions", Ftranspose_regions
, Stranspose_regions
, 4, 5, 0,
2201 "Transpose region START1 to END1 with START2 to END2.\n\
2202 The regions may not be overlapping, because the size of the buffer is\n\
2203 never changed in a transposition.\n\
2205 Optional fifth arg LEAVE_MARKERS, if non-nil, means don't transpose\n\
2206 any markers that happen to be located in the regions.\n\
2208 Transposing beyond buffer boundaries is an error.")
2209 (startr1
, endr1
, startr2
, endr2
, leave_markers
)
2210 Lisp_Object startr1
, endr1
, startr2
, endr2
, leave_markers
;
2212 register int start1
, end1
, start2
, end2
,
2213 gap
, len1
, len_mid
, len2
;
2214 unsigned char *start1_addr
, *start2_addr
, *temp
;
2216 #ifdef USE_TEXT_PROPERTIES
2217 INTERVAL cur_intv
, tmp_interval1
, tmp_interval_mid
, tmp_interval2
;
2218 cur_intv
= BUF_INTERVALS (current_buffer
);
2219 #endif /* USE_TEXT_PROPERTIES */
2221 validate_region (&startr1
, &endr1
);
2222 validate_region (&startr2
, &endr2
);
2224 start1
= XFASTINT (startr1
);
2225 end1
= XFASTINT (endr1
);
2226 start2
= XFASTINT (startr2
);
2227 end2
= XFASTINT (endr2
);
2230 /* Swap the regions if they're reversed. */
2233 register int glumph
= start1
;
2241 len1
= end1
- start1
;
2242 len2
= end2
- start2
;
2245 error ("transposed regions not properly ordered");
2246 else if (start1
== end1
|| start2
== end2
)
2247 error ("transposed region may not be of length 0");
2249 /* The possibilities are:
2250 1. Adjacent (contiguous) regions, or separate but equal regions
2251 (no, really equal, in this case!), or
2252 2. Separate regions of unequal size.
2254 The worst case is usually No. 2. It means that (aside from
2255 potential need for getting the gap out of the way), there also
2256 needs to be a shifting of the text between the two regions. So
2257 if they are spread far apart, we are that much slower... sigh. */
2259 /* It must be pointed out that the really studly thing to do would
2260 be not to move the gap at all, but to leave it in place and work
2261 around it if necessary. This would be extremely efficient,
2262 especially considering that people are likely to do
2263 transpositions near where they are working interactively, which
2264 is exactly where the gap would be found. However, such code
2265 would be much harder to write and to read. So, if you are
2266 reading this comment and are feeling squirrely, by all means have
2267 a go! I just didn't feel like doing it, so I will simply move
2268 the gap the minimum distance to get it out of the way, and then
2269 deal with an unbroken array. */
2271 /* Make sure the gap won't interfere, by moving it out of the text
2272 we will operate on. */
2273 if (start1
< gap
&& gap
< end2
)
2275 if (gap
- start1
< end2
- gap
)
2281 /* Hmmm... how about checking to see if the gap is large
2282 enough to use as the temporary storage? That would avoid an
2283 allocation... interesting. Later, don't fool with it now. */
2285 /* Working without memmove, for portability (sigh), so must be
2286 careful of overlapping subsections of the array... */
2288 if (end1
== start2
) /* adjacent regions */
2290 modify_region (current_buffer
, start1
, end2
);
2291 record_change (start1
, len1
+ len2
);
2293 #ifdef USE_TEXT_PROPERTIES
2294 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
2295 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
2296 Fset_text_properties (start1
, end2
, Qnil
, Qnil
);
2297 #endif /* USE_TEXT_PROPERTIES */
2299 /* First region smaller than second. */
2302 /* We use alloca only if it is small,
2303 because we want to avoid stack overflow. */
2305 temp
= (unsigned char *) xmalloc (len2
);
2307 temp
= (unsigned char *) alloca (len2
);
2309 /* Don't precompute these addresses. We have to compute them
2310 at the last minute, because the relocating allocator might
2311 have moved the buffer around during the xmalloc. */
2312 start1_addr
= BUF_CHAR_ADDRESS (current_buffer
, start1
);
2313 start2_addr
= BUF_CHAR_ADDRESS (current_buffer
, start2
);
2315 bcopy (start2_addr
, temp
, len2
);
2316 bcopy (start1_addr
, start1_addr
+ len2
, len1
);
2317 bcopy (temp
, start1_addr
, len2
);
2322 /* First region not smaller than second. */
2325 temp
= (unsigned char *) xmalloc (len1
);
2327 temp
= (unsigned char *) alloca (len1
);
2328 start1_addr
= BUF_CHAR_ADDRESS (current_buffer
, start1
);
2329 start2_addr
= BUF_CHAR_ADDRESS (current_buffer
, start2
);
2330 bcopy (start1_addr
, temp
, len1
);
2331 bcopy (start2_addr
, start1_addr
, len2
);
2332 bcopy (temp
, start1_addr
+ len2
, len1
);
2336 #ifdef USE_TEXT_PROPERTIES
2337 graft_intervals_into_buffer (tmp_interval1
, start1
+ len2
,
2338 len1
, current_buffer
, 0);
2339 graft_intervals_into_buffer (tmp_interval2
, start1
,
2340 len2
, current_buffer
, 0);
2341 #endif /* USE_TEXT_PROPERTIES */
2343 /* Non-adjacent regions, because end1 != start2, bleagh... */
2347 /* Regions are same size, though, how nice. */
2349 modify_region (current_buffer
, start1
, end1
);
2350 modify_region (current_buffer
, start2
, end2
);
2351 record_change (start1
, len1
);
2352 record_change (start2
, len2
);
2353 #ifdef USE_TEXT_PROPERTIES
2354 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
2355 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
2356 Fset_text_properties (start1
, end1
, Qnil
, Qnil
);
2357 Fset_text_properties (start2
, end2
, Qnil
, Qnil
);
2358 #endif /* USE_TEXT_PROPERTIES */
2361 temp
= (unsigned char *) xmalloc (len1
);
2363 temp
= (unsigned char *) alloca (len1
);
2364 start1_addr
= BUF_CHAR_ADDRESS (current_buffer
, start1
);
2365 start2_addr
= BUF_CHAR_ADDRESS (current_buffer
, start2
);
2366 bcopy (start1_addr
, temp
, len1
);
2367 bcopy (start2_addr
, start1_addr
, len2
);
2368 bcopy (temp
, start2_addr
, len1
);
2371 #ifdef USE_TEXT_PROPERTIES
2372 graft_intervals_into_buffer (tmp_interval1
, start2
,
2373 len1
, current_buffer
, 0);
2374 graft_intervals_into_buffer (tmp_interval2
, start1
,
2375 len2
, current_buffer
, 0);
2376 #endif /* USE_TEXT_PROPERTIES */
2379 else if (len1
< len2
) /* Second region larger than first */
2380 /* Non-adjacent & unequal size, area between must also be shifted. */
2382 len_mid
= start2
- end1
;
2383 modify_region (current_buffer
, start1
, end2
);
2384 record_change (start1
, (end2
- start1
));
2385 #ifdef USE_TEXT_PROPERTIES
2386 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
2387 tmp_interval_mid
= copy_intervals (cur_intv
, end1
, len_mid
);
2388 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
2389 Fset_text_properties (start1
, end2
, Qnil
, Qnil
);
2390 #endif /* USE_TEXT_PROPERTIES */
2392 /* holds region 2 */
2394 temp
= (unsigned char *) xmalloc (len2
);
2396 temp
= (unsigned char *) alloca (len2
);
2397 start1_addr
= BUF_CHAR_ADDRESS (current_buffer
, start1
);
2398 start2_addr
= BUF_CHAR_ADDRESS (current_buffer
, start2
);
2399 bcopy (start2_addr
, temp
, len2
);
2400 bcopy (start1_addr
, start1_addr
+ len_mid
+ len2
, len1
);
2401 safe_bcopy (start1_addr
+ len1
, start1_addr
+ len2
, len_mid
);
2402 bcopy (temp
, start1_addr
, len2
);
2405 #ifdef USE_TEXT_PROPERTIES
2406 graft_intervals_into_buffer (tmp_interval1
, end2
- len1
,
2407 len1
, current_buffer
, 0);
2408 graft_intervals_into_buffer (tmp_interval_mid
, start1
+ len2
,
2409 len_mid
, current_buffer
, 0);
2410 graft_intervals_into_buffer (tmp_interval2
, start1
,
2411 len2
, current_buffer
, 0);
2412 #endif /* USE_TEXT_PROPERTIES */
2415 /* Second region smaller than first. */
2417 len_mid
= start2
- end1
;
2418 record_change (start1
, (end2
- start1
));
2419 modify_region (current_buffer
, start1
, end2
);
2421 #ifdef USE_TEXT_PROPERTIES
2422 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
2423 tmp_interval_mid
= copy_intervals (cur_intv
, end1
, len_mid
);
2424 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
2425 Fset_text_properties (start1
, end2
, Qnil
, Qnil
);
2426 #endif /* USE_TEXT_PROPERTIES */
2428 /* holds region 1 */
2430 temp
= (unsigned char *) xmalloc (len1
);
2432 temp
= (unsigned char *) alloca (len1
);
2433 start1_addr
= BUF_CHAR_ADDRESS (current_buffer
, start1
);
2434 start2_addr
= BUF_CHAR_ADDRESS (current_buffer
, start2
);
2435 bcopy (start1_addr
, temp
, len1
);
2436 bcopy (start2_addr
, start1_addr
, len2
);
2437 bcopy (start1_addr
+ len1
, start1_addr
+ len2
, len_mid
);
2438 bcopy (temp
, start1_addr
+ len2
+ len_mid
, len1
);
2441 #ifdef USE_TEXT_PROPERTIES
2442 graft_intervals_into_buffer (tmp_interval1
, end2
- len1
,
2443 len1
, current_buffer
, 0);
2444 graft_intervals_into_buffer (tmp_interval_mid
, start1
+ len2
,
2445 len_mid
, current_buffer
, 0);
2446 graft_intervals_into_buffer (tmp_interval2
, start1
,
2447 len2
, current_buffer
, 0);
2448 #endif /* USE_TEXT_PROPERTIES */
2452 /* todo: this will be slow, because for every transposition, we
2453 traverse the whole friggin marker list. Possible solutions:
2454 somehow get a list of *all* the markers across multiple
2455 transpositions and do it all in one swell phoop. Or maybe modify
2456 Emacs' marker code to keep an ordered list or tree. This might
2457 be nicer, and more beneficial in the long run, but would be a
2458 bunch of work. Plus the way they're arranged now is nice. */
2459 if (NILP (leave_markers
))
2461 transpose_markers (start1
, end1
, start2
, end2
);
2462 fix_overlays_in_range (start1
, end2
);
2474 Qbuffer_access_fontify_functions
2475 = intern ("buffer-access-fontify-functions");
2476 staticpro (&Qbuffer_access_fontify_functions
);
2478 DEFVAR_LISP ("buffer-access-fontify-functions",
2479 &Vbuffer_access_fontify_functions
,
2480 "List of functions called by `buffer-substring' to fontify if necessary.\n\
2481 Each function is called with two arguments which specify the range\n\
2482 of the buffer being accessed.");
2483 Vbuffer_access_fontify_functions
= Qnil
;
2487 extern Lisp_Object Vprin1_to_string_buffer
;
2488 obuf
= Fcurrent_buffer ();
2489 /* Do this here, because init_buffer_once is too early--it won't work. */
2490 Fset_buffer (Vprin1_to_string_buffer
);
2491 /* Make sure buffer-access-fontify-functions is nil in this buffer. */
2492 Fset (Fmake_local_variable (intern ("buffer-access-fontify-functions")),
2497 DEFVAR_LISP ("buffer-access-fontified-property",
2498 &Vbuffer_access_fontified_property
,
2499 "Property which (if non-nil) indicates text has been fontified.\n\
2500 `buffer-substring' need not call the `buffer-access-fontify-functions'\n\
2501 functions if all the text being accessed has this property.");
2502 Vbuffer_access_fontified_property
= Qnil
;
2504 DEFVAR_LISP ("system-name", &Vsystem_name
,
2505 "The name of the machine Emacs is running on.");
2507 DEFVAR_LISP ("user-full-name", &Vuser_full_name
,
2508 "The full name of the user logged in.");
2510 DEFVAR_LISP ("user-login-name", &Vuser_login_name
,
2511 "The user's name, taken from environment variables if possible.");
2513 DEFVAR_LISP ("user-real-login-name", &Vuser_real_login_name
,
2514 "The user's name, based upon the real uid only.");
2516 defsubr (&Schar_equal
);
2517 defsubr (&Sgoto_char
);
2518 defsubr (&Sstring_to_char
);
2519 defsubr (&Schar_to_string
);
2520 defsubr (&Sbuffer_substring
);
2521 defsubr (&Sbuffer_substring_no_properties
);
2522 defsubr (&Sbuffer_string
);
2524 defsubr (&Spoint_marker
);
2525 defsubr (&Smark_marker
);
2527 defsubr (&Sregion_beginning
);
2528 defsubr (&Sregion_end
);
2529 /* defsubr (&Smark); */
2530 /* defsubr (&Sset_mark); */
2531 defsubr (&Ssave_excursion
);
2532 defsubr (&Ssave_current_buffer
);
2534 defsubr (&Sbufsize
);
2535 defsubr (&Spoint_max
);
2536 defsubr (&Spoint_min
);
2537 defsubr (&Spoint_min_marker
);
2538 defsubr (&Spoint_max_marker
);
2544 defsubr (&Sfollowing_char
);
2545 defsubr (&Sprevious_char
);
2546 defsubr (&Schar_after
);
2548 defsubr (&Sinsert_before_markers
);
2549 defsubr (&Sinsert_and_inherit
);
2550 defsubr (&Sinsert_and_inherit_before_markers
);
2551 defsubr (&Sinsert_char
);
2553 defsubr (&Suser_login_name
);
2554 defsubr (&Suser_real_login_name
);
2555 defsubr (&Suser_uid
);
2556 defsubr (&Suser_real_uid
);
2557 defsubr (&Suser_full_name
);
2558 defsubr (&Semacs_pid
);
2559 defsubr (&Scurrent_time
);
2560 defsubr (&Sformat_time_string
);
2561 defsubr (&Sdecode_time
);
2562 defsubr (&Sencode_time
);
2563 defsubr (&Scurrent_time_string
);
2564 defsubr (&Scurrent_time_zone
);
2565 defsubr (&Sset_time_zone_rule
);
2566 defsubr (&Ssystem_name
);
2567 defsubr (&Smessage
);
2568 defsubr (&Smessage_box
);
2569 defsubr (&Smessage_or_box
);
2572 defsubr (&Sinsert_buffer_substring
);
2573 defsubr (&Scompare_buffer_substrings
);
2574 defsubr (&Ssubst_char_in_region
);
2575 defsubr (&Stranslate_region
);
2576 defsubr (&Sdelete_region
);
2578 defsubr (&Snarrow_to_region
);
2579 defsubr (&Ssave_restriction
);
2580 defsubr (&Stranspose_regions
);