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 long difftm ();
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
, point
);
185 DEFUN ("point-marker", Fpoint_marker
, Spoint_marker
, 0, 0, 0,
186 "Return value of point, as a marker object.")
189 return buildmark (point
);
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 ((point
< XFASTINT (m
)) == beginningp
)
228 return (make_number (point
));
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 ("buffer-size", Fbufsize
, Sbufsize
, 0, 0, 0,
344 "Return the number of characters in the current buffer.")
348 XSETFASTINT (temp
, Z
- BEG
);
352 DEFUN ("point-min", Fpoint_min
, Spoint_min
, 0, 0, 0,
353 "Return the minimum permissible value of point in the current buffer.\n\
354 This is 1, unless narrowing (a buffer restriction) is in effect.")
358 XSETFASTINT (temp
, BEGV
);
362 DEFUN ("point-min-marker", Fpoint_min_marker
, Spoint_min_marker
, 0, 0, 0,
363 "Return a marker to the minimum permissible value of point in this buffer.\n\
364 This is the beginning, unless narrowing (a buffer restriction) is in effect.")
367 return buildmark (BEGV
);
370 DEFUN ("point-max", Fpoint_max
, Spoint_max
, 0, 0, 0,
371 "Return the maximum permissible value of point in the current buffer.\n\
372 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)\n\
373 is in effect, in which case it is less.")
377 XSETFASTINT (temp
, ZV
);
381 DEFUN ("point-max-marker", Fpoint_max_marker
, Spoint_max_marker
, 0, 0, 0,
382 "Return a marker to the maximum permissible value of point in this buffer.\n\
383 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)\n\
384 is in effect, in which case it is less.")
387 return buildmark (ZV
);
390 DEFUN ("following-char", Ffollowing_char
, Sfollowing_char
, 0, 0, 0,
391 "Return the character following point, as a number.\n\
392 At the end of the buffer or accessible region, return 0.")
397 XSETFASTINT (temp
, 0);
399 XSETFASTINT (temp
, FETCH_CHAR (point
));
403 DEFUN ("preceding-char", Fprevious_char
, Sprevious_char
, 0, 0, 0,
404 "Return the character preceding point, as a number.\n\
405 At the beginning of the buffer or accessible region, return 0.")
410 XSETFASTINT (temp
, 0);
412 XSETFASTINT (temp
, FETCH_CHAR (point
- 1));
416 DEFUN ("bobp", Fbobp
, Sbobp
, 0, 0, 0,
417 "Return T if point is at the beginning of the buffer.\n\
418 If the buffer is narrowed, this means the beginning of the narrowed part.")
426 DEFUN ("eobp", Feobp
, Seobp
, 0, 0, 0,
427 "Return T if point is at the end of the buffer.\n\
428 If the buffer is narrowed, this means the end of the narrowed part.")
436 DEFUN ("bolp", Fbolp
, Sbolp
, 0, 0, 0,
437 "Return T if point is at the beginning of a line.")
440 if (point
== BEGV
|| FETCH_CHAR (point
- 1) == '\n')
445 DEFUN ("eolp", Feolp
, Seolp
, 0, 0, 0,
446 "Return T if point is at the end of a line.\n\
447 `End of a line' includes point being at the end of the buffer.")
450 if (point
== ZV
|| FETCH_CHAR (point
) == '\n')
455 DEFUN ("char-after", Fchar_after
, Schar_after
, 1, 1, 0,
456 "Return character in current buffer at position POS.\n\
457 POS is an integer or a buffer pointer.\n\
458 If POS is out of range, the value is nil.")
462 register Lisp_Object val
;
465 CHECK_NUMBER_COERCE_MARKER (pos
, 0);
468 if (n
< BEGV
|| n
>= ZV
) return Qnil
;
470 XSETFASTINT (val
, FETCH_CHAR (n
));
474 DEFUN ("user-login-name", Fuser_login_name
, Suser_login_name
, 0, 1, 0,
475 "Return the name under which the user logged in, as a string.\n\
476 This is based on the effective uid, not the real uid.\n\
477 Also, if the environment variable LOGNAME or USER is set,\n\
478 that determines the value of this function.\n\n\
479 If optional argument UID is an integer, return the login name of the user\n\
480 with that uid, or nil if there is no such user.")
486 /* Set up the user name info if we didn't do it before.
487 (That can happen if Emacs is dumpable
488 but you decide to run `temacs -l loadup' and not dump. */
489 if (INTEGERP (Vuser_login_name
))
493 return Vuser_login_name
;
495 CHECK_NUMBER (uid
, 0);
496 pw
= (struct passwd
*) getpwuid (XINT (uid
));
497 return (pw
? build_string (pw
->pw_name
) : Qnil
);
500 DEFUN ("user-real-login-name", Fuser_real_login_name
, Suser_real_login_name
,
502 "Return the name of the user's real uid, as a string.\n\
503 This ignores the environment variables LOGNAME and USER, so it differs from\n\
504 `user-login-name' when running under `su'.")
507 /* Set up the user name info if we didn't do it before.
508 (That can happen if Emacs is dumpable
509 but you decide to run `temacs -l loadup' and not dump. */
510 if (INTEGERP (Vuser_login_name
))
512 return Vuser_real_login_name
;
515 DEFUN ("user-uid", Fuser_uid
, Suser_uid
, 0, 0, 0,
516 "Return the effective uid of Emacs, as an integer.")
519 return make_number (geteuid ());
522 DEFUN ("user-real-uid", Fuser_real_uid
, Suser_real_uid
, 0, 0, 0,
523 "Return the real uid of Emacs, as an integer.")
526 return make_number (getuid ());
529 DEFUN ("user-full-name", Fuser_full_name
, Suser_full_name
, 0, 0, 0,
530 "Return the full name of the user logged in, as a string.")
533 return Vuser_full_name
;
536 DEFUN ("system-name", Fsystem_name
, Ssystem_name
, 0, 0, 0,
537 "Return the name of the machine you are running on, as a string.")
543 /* For the benefit of callers who don't want to include lisp.h */
547 return (char *) XSTRING (Vsystem_name
)->data
;
550 DEFUN ("emacs-pid", Femacs_pid
, Semacs_pid
, 0, 0, 0,
551 "Return the process ID of Emacs, as an integer.")
554 return make_number (getpid ());
557 DEFUN ("current-time", Fcurrent_time
, Scurrent_time
, 0, 0, 0,
558 "Return the current time, as the number of seconds since 1970-01-01 00:00:00.\n\
559 The time is returned as a list of three integers. The first has the\n\
560 most significant 16 bits of the seconds, while the second has the\n\
561 least significant 16 bits. The third integer gives the microsecond\n\
564 The microsecond count is zero on systems that do not provide\n\
565 resolution finer than a second.")
569 Lisp_Object result
[3];
572 XSETINT (result
[0], (EMACS_SECS (t
) >> 16) & 0xffff);
573 XSETINT (result
[1], (EMACS_SECS (t
) >> 0) & 0xffff);
574 XSETINT (result
[2], EMACS_USECS (t
));
576 return Flist (3, result
);
581 lisp_time_argument (specified_time
, result
)
582 Lisp_Object specified_time
;
585 if (NILP (specified_time
))
586 return time (result
) != -1;
589 Lisp_Object high
, low
;
590 high
= Fcar (specified_time
);
591 CHECK_NUMBER (high
, 0);
592 low
= Fcdr (specified_time
);
595 CHECK_NUMBER (low
, 0);
596 *result
= (XINT (high
) << 16) + (XINT (low
) & 0xffff);
597 return *result
>> 16 == XINT (high
);
601 DEFUN ("format-time-string", Fformat_time_string
, Sformat_time_string
, 1, 2, 0,
602 "Use FORMAT-STRING to format the time TIME.\n\
603 TIME is specified as (HIGH LOW . IGNORED) or (HIGH . LOW), as from\n\
604 `current-time' and `file-attributes'.\n\
605 FORMAT-STRING may contain %-sequences to substitute parts of the time.\n\
606 %a is replaced by the abbreviated name of the day of week.\n\
607 %A is replaced by the full name of the day of week.\n\
608 %b is replaced by the abbreviated name of the month.\n\
609 %B is replaced by the full name of the month.\n\
610 %c stands for the preferred date/time format of the C locale.\n\
611 %d is replaced by the day of month, zero-padded.\n\
612 %D is a synonym for \"%m/%d/%y\".\n\
613 %e is replaced by the day of month, blank-padded.\n\
614 %h is a synonym for \"%b\".\n\
615 %H is replaced by the hour (00-23).\n\
616 %I is replaced by the hour (00-12).\n\
617 %j is replaced by the day of the year (001-366).\n\
618 %k is replaced by the hour (0-23), blank padded.\n\
619 %l is replaced by the hour (1-12), blank padded.\n\
620 %m is replaced by the month (01-12).\n\
621 %M is replaced by the minute (00-59).\n\
622 %n is a synonym for \"\\n\".\n\
623 %p is replaced by AM or PM, as appropriate.\n\
624 %r is a synonym for \"%I:%M:%S %p\".\n\
625 %R is a synonym for \"%H:%M\".\n\
626 %S is replaced by the second (00-60).\n\
627 %t is a synonym for \"\\t\".\n\
628 %T is a synonym for \"%H:%M:%S\".\n\
629 %U is replaced by the week of the year (00-53), first day of week is Sunday.\n\
630 %w is replaced by the day of week (0-6), Sunday is day 0.\n\
631 %W is replaced by the week of the year (00-53), first day of week is Monday.\n\
632 %x is a locale-specific synonym, which defaults to \"%D\" in the C locale.\n\
633 %X is a locale-specific synonym, which defaults to \"%T\" in the C locale.\n\
634 %y is replaced by the year without century (00-99).\n\
635 %Y is replaced by the year with century.\n\
636 %Z is replaced by the time zone abbreviation.\n\
638 The number of options reflects the `strftime' function.")
639 (format_string
, time
)
640 Lisp_Object format_string
, time
;
645 CHECK_STRING (format_string
, 1);
647 if (! lisp_time_argument (time
, &value
))
648 error ("Invalid time specification");
650 /* This is probably enough. */
651 size
= XSTRING (format_string
)->size
* 6 + 50;
655 char *buf
= (char *) alloca (size
);
657 if (emacs_strftime (buf
, size
, XSTRING (format_string
)->data
,
660 return build_string (buf
);
661 /* If buffer was too small, make it bigger. */
666 DEFUN ("decode-time", Fdecode_time
, Sdecode_time
, 0, 1, 0,
667 "Decode a time value as (SEC MINUTE HOUR DAY MONTH YEAR DOW DST ZONE).\n\
668 The optional SPECIFIED-TIME should be a list of (HIGH LOW . IGNORED)\n\
669 or (HIGH . LOW), as from `current-time' and `file-attributes', or `nil'\n\
670 to use the current time. The list has the following nine members:\n\
671 SEC is an integer between 0 and 60; SEC is 60 for a leap second, which\n\
672 only some operating systems support. MINUTE is an integer between 0 and 59.\n\
673 HOUR is an integer between 0 and 23. DAY is an integer between 1 and 31.\n\
674 MONTH is an integer between 1 and 12. YEAR is an integer indicating the\n\
675 four-digit year. DOW is the day of week, an integer between 0 and 6, where\n\
676 0 is Sunday. DST is t if daylight savings time is effect, otherwise nil.\n\
677 ZONE is an integer indicating the number of seconds east of Greenwich.\n\
678 \(Note that Common Lisp has different meanings for DOW and ZONE.)")
680 Lisp_Object specified_time
;
684 struct tm
*decoded_time
;
685 Lisp_Object list_args
[9];
687 if (! lisp_time_argument (specified_time
, &time_spec
))
688 error ("Invalid time specification");
690 decoded_time
= localtime (&time_spec
);
691 XSETFASTINT (list_args
[0], decoded_time
->tm_sec
);
692 XSETFASTINT (list_args
[1], decoded_time
->tm_min
);
693 XSETFASTINT (list_args
[2], decoded_time
->tm_hour
);
694 XSETFASTINT (list_args
[3], decoded_time
->tm_mday
);
695 XSETFASTINT (list_args
[4], decoded_time
->tm_mon
+ 1);
696 XSETINT (list_args
[5], decoded_time
->tm_year
+ 1900);
697 XSETFASTINT (list_args
[6], decoded_time
->tm_wday
);
698 list_args
[7] = (decoded_time
->tm_isdst
)? Qt
: Qnil
;
700 /* Make a copy, in case gmtime modifies the struct. */
701 save_tm
= *decoded_time
;
702 decoded_time
= gmtime (&time_spec
);
703 if (decoded_time
== 0)
706 XSETINT (list_args
[8], difftm (&save_tm
, decoded_time
));
707 return Flist (9, list_args
);
710 DEFUN ("encode-time", Fencode_time
, Sencode_time
, 6, MANY
, 0,
711 "Convert SECOND, MINUTE, HOUR, DAY, MONTH, YEAR and ZONE to internal time.\n\
712 This is the reverse operation of `decode-time', which see.\n\
713 ZONE defaults to the current time zone rule. This can\n\
714 be a string (as from `set-time-zone-rule'), or it can be a list\n\
715 (as from `current-time-zone') or an integer (as from `decode-time')\n\
716 applied without consideration for daylight savings time.\n\
718 You can pass more than 7 arguments; then the first six arguments\n\
719 are used as SECOND through YEAR, and the *last* argument is used as ZONE.\n\
720 The intervening arguments are ignored.\n\
721 This feature lets (apply 'encode-time (decode-time ...)) work.\n\
723 Out-of-range values for SEC, MINUTE, HOUR, DAY, or MONTH are allowed;\n\
724 for example, a DAY of 0 means the day preceding the given month.\n\
725 Year numbers less than 100 are treated just like other year numbers.\n\
726 If you want them to stand for years in this century, you must do that yourself.")
729 register Lisp_Object
*args
;
733 Lisp_Object zone
= (nargs
> 6)? args
[nargs
- 1] : Qnil
;
735 CHECK_NUMBER (args
[0], 0); /* second */
736 CHECK_NUMBER (args
[1], 1); /* minute */
737 CHECK_NUMBER (args
[2], 2); /* hour */
738 CHECK_NUMBER (args
[3], 3); /* day */
739 CHECK_NUMBER (args
[4], 4); /* month */
740 CHECK_NUMBER (args
[5], 5); /* year */
742 tm
.tm_sec
= XINT (args
[0]);
743 tm
.tm_min
= XINT (args
[1]);
744 tm
.tm_hour
= XINT (args
[2]);
745 tm
.tm_mday
= XINT (args
[3]);
746 tm
.tm_mon
= XINT (args
[4]) - 1;
747 tm
.tm_year
= XINT (args
[5]) - 1900;
758 char **oldenv
= environ
, **newenv
;
761 tzstring
= (char *) XSTRING (zone
)->data
;
762 else if (INTEGERP (zone
))
764 int abszone
= abs (XINT (zone
));
765 sprintf (tzbuf
, "XXX%s%d:%02d:%02d", "-" + (XINT (zone
) < 0),
766 abszone
/ (60*60), (abszone
/60) % 60, abszone
% 60);
769 /* On NEXTSTEP, timezone environment var is ignored. */
770 tm
.tm_gmtoff
= -abszone
;
774 error ("Invalid time zone specification");
776 /* Set TZ before calling mktime; merely adjusting mktime's returned
777 value doesn't suffice, since that would mishandle leap seconds. */
778 set_time_zone_rule (tzstring
);
782 /* Restore TZ to previous value. */
786 #ifdef LOCALTIME_CACHE
791 if (time
== (time_t) -1)
792 error ("Specified time is not representable");
794 return make_time (time
);
797 DEFUN ("current-time-string", Fcurrent_time_string
, Scurrent_time_string
, 0, 1, 0,
798 "Return the current time, as a human-readable string.\n\
799 Programs can use this function to decode a time,\n\
800 since the number of columns in each field is fixed.\n\
801 The format is `Sun Sep 16 01:03:52 1973'.\n\
802 If an argument is given, it specifies a time to format\n\
803 instead of the current time. The argument should have the form:\n\
806 (HIGH LOW . IGNORED).\n\
807 Thus, you can use times obtained from `current-time'\n\
808 and from `file-attributes'.")
810 Lisp_Object specified_time
;
816 if (! lisp_time_argument (specified_time
, &value
))
818 tem
= (char *) ctime (&value
);
820 strncpy (buf
, tem
, 24);
823 return build_string (buf
);
826 #define TM_YEAR_ORIGIN 1900
828 /* Yield A - B, measured in seconds. */
833 int ay
= a
->tm_year
+ (TM_YEAR_ORIGIN
- 1);
834 int by
= b
->tm_year
+ (TM_YEAR_ORIGIN
- 1);
835 /* Divide years by 100, rounding towards minus infinity. */
836 int ac
= ay
/ 100 - (ay
% 100 < 0);
837 int bc
= by
/ 100 - (by
% 100 < 0);
838 /* Some compilers can't handle this as a single return statement. */
840 /* difference in day of year */
841 a
->tm_yday
- b
->tm_yday
842 /* + intervening leap days */
843 + ((ay
>> 2) - (by
>> 2))
845 + ((ac
>> 2) - (bc
>> 2))
846 /* + difference in years * 365 */
847 + (long)(ay
-by
) * 365
849 return (60*(60*(24*days
+ (a
->tm_hour
- b
->tm_hour
))
850 + (a
->tm_min
- b
->tm_min
))
851 + (a
->tm_sec
- b
->tm_sec
));
854 DEFUN ("current-time-zone", Fcurrent_time_zone
, Scurrent_time_zone
, 0, 1, 0,
855 "Return the offset and name for the local time zone.\n\
856 This returns a list of the form (OFFSET NAME).\n\
857 OFFSET is an integer number of seconds ahead of UTC (east of Greenwich).\n\
858 A negative value means west of Greenwich.\n\
859 NAME is a string giving the name of the time zone.\n\
860 If an argument is given, it specifies when the time zone offset is determined\n\
861 instead of using the current time. The argument should have the form:\n\
864 (HIGH LOW . IGNORED).\n\
865 Thus, you can use times obtained from `current-time'\n\
866 and from `file-attributes'.\n\
868 Some operating systems cannot provide all this information to Emacs;\n\
869 in this case, `current-time-zone' returns a list containing nil for\n\
870 the data it can't find.")
872 Lisp_Object specified_time
;
877 if (lisp_time_argument (specified_time
, &value
)
878 && (t
= gmtime (&value
)) != 0)
884 gmt
= *t
; /* Make a copy, in case localtime modifies *t. */
885 t
= localtime (&value
);
886 offset
= difftm (t
, &gmt
);
890 s
= (char *)t
->tm_zone
;
891 #else /* not HAVE_TM_ZONE */
893 if (t
->tm_isdst
== 0 || t
->tm_isdst
== 1)
894 s
= tzname
[t
->tm_isdst
];
896 #endif /* not HAVE_TM_ZONE */
899 /* No local time zone name is available; use "+-NNNN" instead. */
900 int am
= (offset
< 0 ? -offset
: offset
) / 60;
901 sprintf (buf
, "%c%02d%02d", (offset
< 0 ? '-' : '+'), am
/60, am
%60);
904 return Fcons (make_number (offset
), Fcons (build_string (s
), Qnil
));
907 return Fmake_list (2, Qnil
);
910 /* This holds the value of `environ' produced by the previous
911 call to Fset_time_zone_rule, or 0 if Fset_time_zone_rule
912 has never been called. */
913 static char **environbuf
;
915 DEFUN ("set-time-zone-rule", Fset_time_zone_rule
, Sset_time_zone_rule
, 1, 1, 0,
916 "Set the local time zone using TZ, a string specifying a time zone rule.\n\
917 If TZ is nil, use implementation-defined default time zone information.")
927 CHECK_STRING (tz
, 0);
928 tzstring
= (char *) XSTRING (tz
)->data
;
931 set_time_zone_rule (tzstring
);
934 environbuf
= environ
;
939 /* Set the local time zone rule to TZSTRING.
940 This allocates memory into `environ', which it is the caller's
941 responsibility to free. */
943 set_time_zone_rule (tzstring
)
947 char **from
, **to
, **newenv
;
949 /* Make the ENVIRON vector longer with room for TZSTRING. */
950 for (from
= environ
; *from
; from
++)
952 envptrs
= from
- environ
+ 2;
953 newenv
= to
= (char **) xmalloc (envptrs
* sizeof (char *)
954 + (tzstring
? strlen (tzstring
) + 4 : 0));
956 /* Add TZSTRING to the end of environ, as a value for TZ. */
959 char *t
= (char *) (to
+ envptrs
);
961 strcat (t
, tzstring
);
965 /* Copy the old environ vector elements into NEWENV,
966 but don't copy the TZ variable.
967 So we have only one definition of TZ, which came from TZSTRING. */
968 for (from
= environ
; *from
; from
++)
969 if (strncmp (*from
, "TZ=", 3) != 0)
975 /* If we do have a TZSTRING, NEWENV points to the vector slot where
976 the TZ variable is stored. If we do not have a TZSTRING,
977 TO points to the vector slot which has the terminating null. */
979 #ifdef LOCALTIME_CACHE
981 /* In SunOS 4.1.3_U1 and 4.1.4, if TZ has a value like
982 "US/Pacific" that loads a tz file, then changes to a value like
983 "XXX0" that does not load a tz file, and then changes back to
984 its original value, the last change is (incorrectly) ignored.
985 Also, if TZ changes twice in succession to values that do
986 not load a tz file, tzset can dump core (see Sun bug#1225179).
987 The following code works around these bugs. */
989 /* These two values are known to load tz files in buggy implementations.
990 Their values shouldn't matter in non-buggy implementations. */
991 char *tz1
= "TZ=GMT0";
992 char *tz2
= "TZ=GMT1";
996 /* Temporarily set TZ to a value that loads a tz file
997 and that differs from tzstring. */
999 *newenv
= strcmp (tzstring
, tz1
+ 3) == 0 ? tz2
: tz1
;
1005 /* The implied tzstring is unknown, so temporarily set TZ to
1006 two different values that each load a tz file. */
1015 /* Now TZ has the desired value, and tzset can be invoked safely. */
1030 /* Callers passing one argument to Finsert need not gcpro the
1031 argument "array", since the only element of the array will
1032 not be used after calling insert or insert_from_string, so
1033 we don't care if it gets trashed. */
1035 DEFUN ("insert", Finsert
, Sinsert
, 0, MANY
, 0,
1036 "Insert the arguments, either strings or characters, at point.\n\
1037 Point moves forward so that it ends up after the inserted text.\n\
1038 Any other markers at the point of insertion remain before the text.")
1041 register Lisp_Object
*args
;
1043 register int argnum
;
1044 register Lisp_Object tem
;
1047 for (argnum
= 0; argnum
< nargs
; argnum
++)
1053 str
[0] = XINT (tem
);
1056 else if (STRINGP (tem
))
1058 insert_from_string (tem
, 0, XSTRING (tem
)->size
, 0);
1062 tem
= wrong_type_argument (Qchar_or_string_p
, tem
);
1070 DEFUN ("insert-and-inherit", Finsert_and_inherit
, Sinsert_and_inherit
,
1072 "Insert the arguments at point, inheriting properties from adjoining text.\n\
1073 Point moves forward so that it ends up after the inserted text.\n\
1074 Any other markers at the point of insertion remain before the text.")
1077 register Lisp_Object
*args
;
1079 register int argnum
;
1080 register Lisp_Object tem
;
1083 for (argnum
= 0; argnum
< nargs
; argnum
++)
1089 str
[0] = XINT (tem
);
1090 insert_and_inherit (str
, 1);
1092 else if (STRINGP (tem
))
1094 insert_from_string (tem
, 0, XSTRING (tem
)->size
, 1);
1098 tem
= wrong_type_argument (Qchar_or_string_p
, tem
);
1106 DEFUN ("insert-before-markers", Finsert_before_markers
, Sinsert_before_markers
, 0, MANY
, 0,
1107 "Insert strings or characters at point, relocating markers after the text.\n\
1108 Point moves forward so that it ends up after the inserted text.\n\
1109 Any other markers at the point of insertion also end up after the text.")
1112 register Lisp_Object
*args
;
1114 register int argnum
;
1115 register Lisp_Object tem
;
1118 for (argnum
= 0; argnum
< nargs
; argnum
++)
1124 str
[0] = XINT (tem
);
1125 insert_before_markers (str
, 1);
1127 else if (STRINGP (tem
))
1129 insert_from_string_before_markers (tem
, 0, XSTRING (tem
)->size
, 0);
1133 tem
= wrong_type_argument (Qchar_or_string_p
, tem
);
1141 DEFUN ("insert-before-markers-and-inherit",
1142 Finsert_and_inherit_before_markers
, Sinsert_and_inherit_before_markers
,
1144 "Insert text at point, relocating markers and inheriting properties.\n\
1145 Point moves forward so that it ends up after the inserted text.\n\
1146 Any other markers at the point of insertion also end up after the text.")
1149 register Lisp_Object
*args
;
1151 register int argnum
;
1152 register Lisp_Object tem
;
1155 for (argnum
= 0; argnum
< nargs
; argnum
++)
1161 str
[0] = XINT (tem
);
1162 insert_before_markers_and_inherit (str
, 1);
1164 else if (STRINGP (tem
))
1166 insert_from_string_before_markers (tem
, 0, XSTRING (tem
)->size
, 1);
1170 tem
= wrong_type_argument (Qchar_or_string_p
, tem
);
1178 DEFUN ("insert-char", Finsert_char
, Sinsert_char
, 2, 3, 0,
1179 "Insert COUNT (second arg) copies of CHARACTER (first arg).\n\
1180 Point and all markers are affected as in the function `insert'.\n\
1181 Both arguments are required.\n\
1182 The optional third arg INHERIT, if non-nil, says to inherit text properties\n\
1183 from adjoining text, if those properties are sticky.")
1184 (character
, count
, inherit
)
1185 Lisp_Object character
, count
, inherit
;
1187 register unsigned char *string
;
1188 register int strlen
;
1191 CHECK_NUMBER (character
, 0);
1192 CHECK_NUMBER (count
, 1);
1197 strlen
= min (n
, 256);
1198 string
= (unsigned char *) alloca (strlen
);
1199 for (i
= 0; i
< strlen
; i
++)
1200 string
[i
] = XFASTINT (character
);
1203 if (!NILP (inherit
))
1204 insert_and_inherit (string
, strlen
);
1206 insert (string
, strlen
);
1211 if (!NILP (inherit
))
1212 insert_and_inherit (string
, n
);
1220 /* Making strings from buffer contents. */
1222 /* Return a Lisp_String containing the text of the current buffer from
1223 START to END. If text properties are in use and the current buffer
1224 has properties in the range specified, the resulting string will also
1225 have them, if PROPS is nonzero.
1227 We don't want to use plain old make_string here, because it calls
1228 make_uninit_string, which can cause the buffer arena to be
1229 compacted. make_string has no way of knowing that the data has
1230 been moved, and thus copies the wrong data into the string. This
1231 doesn't effect most of the other users of make_string, so it should
1232 be left as is. But we should use this function when conjuring
1233 buffer substrings. */
1236 make_buffer_string (start
, end
, props
)
1240 Lisp_Object result
, tem
, tem1
;
1242 if (start
< GPT
&& GPT
< end
)
1245 result
= make_uninit_string (end
- start
);
1246 bcopy (&FETCH_CHAR (start
), XSTRING (result
)->data
, end
- start
);
1248 /* If desired, update and copy the text properties. */
1249 #ifdef USE_TEXT_PROPERTIES
1252 update_buffer_properties (start
, end
);
1254 tem
= Fnext_property_change (make_number (start
), Qnil
, make_number (end
));
1255 tem1
= Ftext_properties_at (make_number (start
), Qnil
);
1257 if (XINT (tem
) != end
|| !NILP (tem1
))
1258 copy_intervals_to_string (result
, current_buffer
, start
, end
- start
);
1265 /* Call Vbuffer_access_fontify_functions for the range START ... END
1266 in the current buffer, if necessary. */
1269 update_buffer_properties (start
, end
)
1272 #ifdef USE_TEXT_PROPERTIES
1273 /* If this buffer has some access functions,
1274 call them, specifying the range of the buffer being accessed. */
1275 if (!NILP (Vbuffer_access_fontify_functions
))
1277 Lisp_Object args
[3];
1280 args
[0] = Qbuffer_access_fontify_functions
;
1281 XSETINT (args
[1], start
);
1282 XSETINT (args
[2], end
);
1284 /* But don't call them if we can tell that the work
1285 has already been done. */
1286 if (!NILP (Vbuffer_access_fontified_property
))
1288 tem
= Ftext_property_any (args
[1], args
[2],
1289 Vbuffer_access_fontified_property
,
1292 Frun_hook_with_args (3, args
);
1295 Frun_hook_with_args (3, args
);
1300 DEFUN ("buffer-substring", Fbuffer_substring
, Sbuffer_substring
, 2, 2, 0,
1301 "Return the contents of part of the current buffer as a string.\n\
1302 The two arguments START and END are character positions;\n\
1303 they can be in either order.")
1305 Lisp_Object start
, end
;
1309 validate_region (&start
, &end
);
1313 return make_buffer_string (b
, e
, 1);
1316 DEFUN ("buffer-substring-no-properties", Fbuffer_substring_no_properties
,
1317 Sbuffer_substring_no_properties
, 2, 2, 0,
1318 "Return the characters of part of the buffer, without the text properties.\n\
1319 The two arguments START and END are character positions;\n\
1320 they can be in either order.")
1322 Lisp_Object start
, end
;
1326 validate_region (&start
, &end
);
1330 return make_buffer_string (b
, e
, 0);
1333 DEFUN ("buffer-string", Fbuffer_string
, Sbuffer_string
, 0, 0, 0,
1334 "Return the contents of the current buffer as a string.\n\
1335 If narrowing is in effect, this function returns only the visible part\n\
1339 return make_buffer_string (BEGV
, ZV
, 1);
1342 DEFUN ("insert-buffer-substring", Finsert_buffer_substring
, Sinsert_buffer_substring
,
1344 "Insert before point a substring of the contents of buffer BUFFER.\n\
1345 BUFFER may be a buffer or a buffer name.\n\
1346 Arguments START and END are character numbers specifying the substring.\n\
1347 They default to the beginning and the end of BUFFER.")
1349 Lisp_Object buf
, start
, end
;
1351 register int b
, e
, temp
;
1352 register struct buffer
*bp
, *obuf
;
1355 buffer
= Fget_buffer (buf
);
1358 bp
= XBUFFER (buffer
);
1364 CHECK_NUMBER_COERCE_MARKER (start
, 0);
1371 CHECK_NUMBER_COERCE_MARKER (end
, 1);
1376 temp
= b
, b
= e
, e
= temp
;
1378 if (!(BUF_BEGV (bp
) <= b
&& e
<= BUF_ZV (bp
)))
1379 args_out_of_range (start
, end
);
1381 obuf
= current_buffer
;
1382 set_buffer_internal_1 (bp
);
1383 update_buffer_properties (b
, e
);
1384 set_buffer_internal_1 (obuf
);
1386 insert_from_buffer (bp
, b
, e
- b
, 0);
1390 DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings
, Scompare_buffer_substrings
,
1392 "Compare two substrings of two buffers; return result as number.\n\
1393 the value is -N if first string is less after N-1 chars,\n\
1394 +N if first string is greater after N-1 chars, or 0 if strings match.\n\
1395 Each substring is represented as three arguments: BUFFER, START and END.\n\
1396 That makes six args in all, three for each substring.\n\n\
1397 The value of `case-fold-search' in the current buffer\n\
1398 determines whether case is significant or ignored.")
1399 (buffer1
, start1
, end1
, buffer2
, start2
, end2
)
1400 Lisp_Object buffer1
, start1
, end1
, buffer2
, start2
, end2
;
1402 register int begp1
, endp1
, begp2
, endp2
, temp
, len1
, len2
, length
, i
;
1403 register struct buffer
*bp1
, *bp2
;
1404 register Lisp_Object
*trt
1405 = (!NILP (current_buffer
->case_fold_search
)
1406 ? XCHAR_TABLE (current_buffer
->case_canon_table
)->contents
: 0);
1408 /* Find the first buffer and its substring. */
1411 bp1
= current_buffer
;
1415 buf1
= Fget_buffer (buffer1
);
1418 bp1
= XBUFFER (buf1
);
1422 begp1
= BUF_BEGV (bp1
);
1425 CHECK_NUMBER_COERCE_MARKER (start1
, 1);
1426 begp1
= XINT (start1
);
1429 endp1
= BUF_ZV (bp1
);
1432 CHECK_NUMBER_COERCE_MARKER (end1
, 2);
1433 endp1
= XINT (end1
);
1437 temp
= begp1
, begp1
= endp1
, endp1
= temp
;
1439 if (!(BUF_BEGV (bp1
) <= begp1
1441 && endp1
<= BUF_ZV (bp1
)))
1442 args_out_of_range (start1
, end1
);
1444 /* Likewise for second substring. */
1447 bp2
= current_buffer
;
1451 buf2
= Fget_buffer (buffer2
);
1454 bp2
= XBUFFER (buf2
);
1458 begp2
= BUF_BEGV (bp2
);
1461 CHECK_NUMBER_COERCE_MARKER (start2
, 4);
1462 begp2
= XINT (start2
);
1465 endp2
= BUF_ZV (bp2
);
1468 CHECK_NUMBER_COERCE_MARKER (end2
, 5);
1469 endp2
= XINT (end2
);
1473 temp
= begp2
, begp2
= endp2
, endp2
= temp
;
1475 if (!(BUF_BEGV (bp2
) <= begp2
1477 && endp2
<= BUF_ZV (bp2
)))
1478 args_out_of_range (start2
, end2
);
1480 len1
= endp1
- begp1
;
1481 len2
= endp2
- begp2
;
1486 for (i
= 0; i
< length
; i
++)
1488 int c1
= *BUF_CHAR_ADDRESS (bp1
, begp1
+ i
);
1489 int c2
= *BUF_CHAR_ADDRESS (bp2
, begp2
+ i
);
1496 return make_number (- 1 - i
);
1498 return make_number (i
+ 1);
1501 /* The strings match as far as they go.
1502 If one is shorter, that one is less. */
1504 return make_number (length
+ 1);
1505 else if (length
< len2
)
1506 return make_number (- length
- 1);
1508 /* Same length too => they are equal. */
1509 return make_number (0);
1513 subst_char_in_region_unwind (arg
)
1516 return current_buffer
->undo_list
= arg
;
1520 subst_char_in_region_unwind_1 (arg
)
1523 return current_buffer
->filename
= arg
;
1526 DEFUN ("subst-char-in-region", Fsubst_char_in_region
,
1527 Ssubst_char_in_region
, 4, 5, 0,
1528 "From START to END, replace FROMCHAR with TOCHAR each time it occurs.\n\
1529 If optional arg NOUNDO is non-nil, don't record this change for undo\n\
1530 and don't mark the buffer as really changed.")
1531 (start
, end
, fromchar
, tochar
, noundo
)
1532 Lisp_Object start
, end
, fromchar
, tochar
, noundo
;
1534 register int pos
, stop
, look
;
1536 int count
= specpdl_ptr
- specpdl
;
1538 validate_region (&start
, &end
);
1539 CHECK_NUMBER (fromchar
, 2);
1540 CHECK_NUMBER (tochar
, 3);
1544 look
= XINT (fromchar
);
1546 /* If we don't want undo, turn off putting stuff on the list.
1547 That's faster than getting rid of things,
1548 and it prevents even the entry for a first change.
1549 Also inhibit locking the file. */
1552 record_unwind_protect (subst_char_in_region_unwind
,
1553 current_buffer
->undo_list
);
1554 current_buffer
->undo_list
= Qt
;
1555 /* Don't do file-locking. */
1556 record_unwind_protect (subst_char_in_region_unwind_1
,
1557 current_buffer
->filename
);
1558 current_buffer
->filename
= Qnil
;
1563 if (FETCH_CHAR (pos
) == look
)
1567 modify_region (current_buffer
, XINT (start
), stop
);
1569 if (! NILP (noundo
))
1571 if (MODIFF
- 1 == SAVE_MODIFF
)
1573 if (MODIFF
- 1 == current_buffer
->auto_save_modified
)
1574 current_buffer
->auto_save_modified
++;
1581 record_change (pos
, 1);
1582 FETCH_CHAR (pos
) = XINT (tochar
);
1588 signal_after_change (XINT (start
),
1589 stop
- XINT (start
), stop
- XINT (start
));
1591 unbind_to (count
, Qnil
);
1595 DEFUN ("translate-region", Ftranslate_region
, Stranslate_region
, 3, 3, 0,
1596 "From START to END, translate characters according to TABLE.\n\
1597 TABLE is a string; the Nth character in it is the mapping\n\
1598 for the character with code N. Returns the number of characters changed.")
1602 register Lisp_Object table
;
1604 register int pos
, stop
; /* Limits of the region. */
1605 register unsigned char *tt
; /* Trans table. */
1606 register int oc
; /* Old character. */
1607 register int nc
; /* New character. */
1608 int cnt
; /* Number of changes made. */
1609 Lisp_Object z
; /* Return. */
1610 int size
; /* Size of translate table. */
1612 validate_region (&start
, &end
);
1613 CHECK_STRING (table
, 2);
1615 size
= XSTRING (table
)->size
;
1616 tt
= XSTRING (table
)->data
;
1620 modify_region (current_buffer
, pos
, stop
);
1623 for (; pos
< stop
; ++pos
)
1625 oc
= FETCH_CHAR (pos
);
1631 record_change (pos
, 1);
1632 FETCH_CHAR (pos
) = nc
;
1633 signal_after_change (pos
, 1, 1);
1639 XSETFASTINT (z
, cnt
);
1643 DEFUN ("delete-region", Fdelete_region
, Sdelete_region
, 2, 2, "r",
1644 "Delete the text between point and mark.\n\
1645 When called from a program, expects two arguments,\n\
1646 positions (integers or markers) specifying the stretch to be deleted.")
1648 Lisp_Object start
, end
;
1650 validate_region (&start
, &end
);
1651 del_range (XINT (start
), XINT (end
));
1655 DEFUN ("widen", Fwiden
, Swiden
, 0, 0, "",
1656 "Remove restrictions (narrowing) from current buffer.\n\
1657 This allows the buffer's full text to be seen and edited.")
1661 SET_BUF_ZV (current_buffer
, Z
);
1662 current_buffer
->clip_changed
= 1;
1663 /* Changing the buffer bounds invalidates any recorded current column. */
1664 invalidate_current_column ();
1668 DEFUN ("narrow-to-region", Fnarrow_to_region
, Snarrow_to_region
, 2, 2, "r",
1669 "Restrict editing in this buffer to the current region.\n\
1670 The rest of the text becomes temporarily invisible and untouchable\n\
1671 but is not deleted; if you save the buffer in a file, the invisible\n\
1672 text is included in the file. \\[widen] makes all visible again.\n\
1673 See also `save-restriction'.\n\
1675 When calling from a program, pass two arguments; positions (integers\n\
1676 or markers) bounding the text that should remain visible.")
1678 register Lisp_Object start
, end
;
1680 CHECK_NUMBER_COERCE_MARKER (start
, 0);
1681 CHECK_NUMBER_COERCE_MARKER (end
, 1);
1683 if (XINT (start
) > XINT (end
))
1686 tem
= start
; start
= end
; end
= tem
;
1689 if (!(BEG
<= XINT (start
) && XINT (start
) <= XINT (end
) && XINT (end
) <= Z
))
1690 args_out_of_range (start
, end
);
1692 BEGV
= XFASTINT (start
);
1693 SET_BUF_ZV (current_buffer
, XFASTINT (end
));
1694 if (point
< XFASTINT (start
))
1695 SET_PT (XFASTINT (start
));
1696 if (point
> XFASTINT (end
))
1697 SET_PT (XFASTINT (end
));
1698 current_buffer
->clip_changed
= 1;
1699 /* Changing the buffer bounds invalidates any recorded current column. */
1700 invalidate_current_column ();
1705 save_restriction_save ()
1707 register Lisp_Object bottom
, top
;
1708 /* Note: I tried using markers here, but it does not win
1709 because insertion at the end of the saved region
1710 does not advance mh and is considered "outside" the saved region. */
1711 XSETFASTINT (bottom
, BEGV
- BEG
);
1712 XSETFASTINT (top
, Z
- ZV
);
1714 return Fcons (Fcurrent_buffer (), Fcons (bottom
, top
));
1718 save_restriction_restore (data
)
1721 register struct buffer
*buf
;
1722 register int newhead
, newtail
;
1723 register Lisp_Object tem
;
1725 buf
= XBUFFER (XCONS (data
)->car
);
1727 data
= XCONS (data
)->cdr
;
1729 tem
= XCONS (data
)->car
;
1730 newhead
= XINT (tem
);
1731 tem
= XCONS (data
)->cdr
;
1732 newtail
= XINT (tem
);
1733 if (newhead
+ newtail
> BUF_Z (buf
) - BUF_BEG (buf
))
1738 BUF_BEGV (buf
) = BUF_BEG (buf
) + newhead
;
1739 SET_BUF_ZV (buf
, BUF_Z (buf
) - newtail
);
1740 current_buffer
->clip_changed
= 1;
1742 /* If point is outside the new visible range, move it inside. */
1744 clip_to_bounds (BUF_BEGV (buf
), BUF_PT (buf
), BUF_ZV (buf
)));
1749 DEFUN ("save-restriction", Fsave_restriction
, Ssave_restriction
, 0, UNEVALLED
, 0,
1750 "Execute BODY, saving and restoring current buffer's restrictions.\n\
1751 The buffer's restrictions make parts of the beginning and end invisible.\n\
1752 \(They are set up with `narrow-to-region' and eliminated with `widen'.)\n\
1753 This special form, `save-restriction', saves the current buffer's restrictions\n\
1754 when it is entered, and restores them when it is exited.\n\
1755 So any `narrow-to-region' within BODY lasts only until the end of the form.\n\
1756 The old restrictions settings are restored\n\
1757 even in case of abnormal exit (throw or error).\n\
1759 The value returned is the value of the last form in BODY.\n\
1761 `save-restriction' can get confused if, within the BODY, you widen\n\
1762 and then make changes outside the area within the saved restrictions.\n\
1764 Note: if you are using both `save-excursion' and `save-restriction',\n\
1765 use `save-excursion' outermost:\n\
1766 (save-excursion (save-restriction ...))")
1770 register Lisp_Object val
;
1771 int count
= specpdl_ptr
- specpdl
;
1773 record_unwind_protect (save_restriction_restore
, save_restriction_save ());
1774 val
= Fprogn (body
);
1775 return unbind_to (count
, val
);
1778 /* Buffer for the most recent text displayed by Fmessage. */
1779 static char *message_text
;
1781 /* Allocated length of that buffer. */
1782 static int message_length
;
1784 DEFUN ("message", Fmessage
, Smessage
, 1, MANY
, 0,
1785 "Print a one-line message at the bottom of the screen.\n\
1786 The first argument is a format control string, and the rest are data\n\
1787 to be formatted under control of the string. See `format' for details.\n\
1789 If the first argument is nil, clear any existing message; let the\n\
1790 minibuffer contents show.")
1802 register Lisp_Object val
;
1803 val
= Fformat (nargs
, args
);
1804 /* Copy the data so that it won't move when we GC. */
1807 message_text
= (char *)xmalloc (80);
1808 message_length
= 80;
1810 if (XSTRING (val
)->size
> message_length
)
1812 message_length
= XSTRING (val
)->size
;
1813 message_text
= (char *)xrealloc (message_text
, message_length
);
1815 bcopy (XSTRING (val
)->data
, message_text
, XSTRING (val
)->size
);
1816 message2 (message_text
, XSTRING (val
)->size
);
1821 DEFUN ("message-box", Fmessage_box
, Smessage_box
, 1, MANY
, 0,
1822 "Display a message, in a dialog box if possible.\n\
1823 If a dialog box is not available, use the echo area.\n\
1824 The first argument is a format control string, and the rest are data\n\
1825 to be formatted under control of the string. See `format' for details.\n\
1827 If the first argument is nil, clear any existing message; let the\n\
1828 minibuffer contents show.")
1840 register Lisp_Object val
;
1841 val
= Fformat (nargs
, args
);
1844 Lisp_Object pane
, menu
, obj
;
1845 struct gcpro gcpro1
;
1846 pane
= Fcons (Fcons (build_string ("OK"), Qt
), Qnil
);
1848 menu
= Fcons (val
, pane
);
1849 obj
= Fx_popup_dialog (Qt
, menu
);
1853 #else /* not HAVE_MENUS */
1854 /* Copy the data so that it won't move when we GC. */
1857 message_text
= (char *)xmalloc (80);
1858 message_length
= 80;
1860 if (XSTRING (val
)->size
> message_length
)
1862 message_length
= XSTRING (val
)->size
;
1863 message_text
= (char *)xrealloc (message_text
, message_length
);
1865 bcopy (XSTRING (val
)->data
, message_text
, XSTRING (val
)->size
);
1866 message2 (message_text
, XSTRING (val
)->size
);
1868 #endif /* not HAVE_MENUS */
1872 extern Lisp_Object last_nonmenu_event
;
1875 DEFUN ("message-or-box", Fmessage_or_box
, Smessage_or_box
, 1, MANY
, 0,
1876 "Display a message in a dialog box or in the echo area.\n\
1877 If this command was invoked with the mouse, use a dialog box.\n\
1878 Otherwise, use the echo area.\n\
1879 The first argument is a format control string, and the rest are data\n\
1880 to be formatted under control of the string. See `format' for details.\n\
1882 If the first argument is nil, clear any existing message; let the\n\
1883 minibuffer contents show.")
1889 if (NILP (last_nonmenu_event
) || CONSP (last_nonmenu_event
))
1890 return Fmessage_box (nargs
, args
);
1892 return Fmessage (nargs
, args
);
1895 DEFUN ("format", Fformat
, Sformat
, 1, MANY
, 0,
1896 "Format a string out of a control-string and arguments.\n\
1897 The first argument is a control string.\n\
1898 The other arguments are substituted into it to make the result, a string.\n\
1899 It may contain %-sequences meaning to substitute the next argument.\n\
1900 %s means print a string argument. Actually, prints any object, with `princ'.\n\
1901 %d means print as number in decimal (%o octal, %x hex).\n\
1902 %e means print a number in exponential notation.\n\
1903 %f means print a number in decimal-point notation.\n\
1904 %g means print a number in exponential notation\n\
1905 or decimal-point notation, whichever uses fewer characters.\n\
1906 %c means print a number as a single character.\n\
1907 %S means print any object as an s-expression (using prin1).\n\
1908 The argument used for %d, %o, %x, %e, %f, %g or %c must be a number.\n\
1909 Use %% to put a single % into the output.")
1912 register Lisp_Object
*args
;
1914 register int n
; /* The number of the next arg to substitute */
1915 register int total
= 5; /* An estimate of the final length */
1917 register unsigned char *format
, *end
;
1919 extern char *index ();
1920 /* It should not be necessary to GCPRO ARGS, because
1921 the caller in the interpreter should take care of that. */
1923 CHECK_STRING (args
[0], 0);
1924 format
= XSTRING (args
[0])->data
;
1925 end
= format
+ XSTRING (args
[0])->size
;
1928 while (format
!= end
)
1929 if (*format
++ == '%')
1933 /* Process a numeric arg and skip it. */
1934 minlen
= atoi (format
);
1938 while ((*format
>= '0' && *format
<= '9')
1939 || *format
== '-' || *format
== ' ' || *format
== '.')
1944 else if (++n
>= nargs
)
1945 error ("Not enough arguments for format string");
1946 else if (*format
== 'S')
1948 /* For `S', prin1 the argument and then treat like a string. */
1949 register Lisp_Object tem
;
1950 tem
= Fprin1_to_string (args
[n
], Qnil
);
1954 else if (SYMBOLP (args
[n
]))
1956 XSETSTRING (args
[n
], XSYMBOL (args
[n
])->name
);
1959 else if (STRINGP (args
[n
]))
1962 if (*format
!= 's' && *format
!= 'S')
1963 error ("format specifier doesn't match argument type");
1964 total
+= XSTRING (args
[n
])->size
;
1965 /* We have to put an arbitrary limit on minlen
1966 since otherwise it could make alloca fail. */
1967 if (minlen
< XSTRING (args
[n
])->size
+ 1000)
1970 /* Would get MPV otherwise, since Lisp_Int's `point' to low memory. */
1971 else if (INTEGERP (args
[n
]) && *format
!= 's')
1973 #ifdef LISP_FLOAT_TYPE
1974 /* The following loop assumes the Lisp type indicates
1975 the proper way to pass the argument.
1976 So make sure we have a flonum if the argument should
1978 if (*format
== 'e' || *format
== 'f' || *format
== 'g')
1979 args
[n
] = Ffloat (args
[n
]);
1982 /* We have to put an arbitrary limit on minlen
1983 since otherwise it could make alloca fail. */
1987 #ifdef LISP_FLOAT_TYPE
1988 else if (FLOATP (args
[n
]) && *format
!= 's')
1990 if (! (*format
== 'e' || *format
== 'f' || *format
== 'g'))
1991 args
[n
] = Ftruncate (args
[n
]);
1993 /* We have to put an arbitrary limit on minlen
1994 since otherwise it could make alloca fail. */
2001 /* Anything but a string, convert to a string using princ. */
2002 register Lisp_Object tem
;
2003 tem
= Fprin1_to_string (args
[n
], Qt
);
2010 register int nstrings
= n
+ 1;
2012 /* Allocate twice as many strings as we have %-escapes; floats occupy
2013 two slots, and we're not sure how many of those we have. */
2014 register unsigned char **strings
2015 = (unsigned char **) alloca (2 * nstrings
* sizeof (unsigned char *));
2019 for (n
= 0; n
< nstrings
; n
++)
2022 strings
[i
++] = (unsigned char *) "";
2023 else if (INTEGERP (args
[n
]))
2024 /* We checked above that the corresponding format effector
2025 isn't %s, which would cause MPV. */
2026 strings
[i
++] = (unsigned char *) XINT (args
[n
]);
2027 #ifdef LISP_FLOAT_TYPE
2028 else if (FLOATP (args
[n
]))
2030 union { double d
; char *half
[2]; } u
;
2032 u
.d
= XFLOAT (args
[n
])->data
;
2033 strings
[i
++] = (unsigned char *) u
.half
[0];
2034 strings
[i
++] = (unsigned char *) u
.half
[1];
2038 /* The first string is treated differently
2039 because it is the format string. */
2040 strings
[i
++] = XSTRING (args
[n
])->data
;
2042 strings
[i
++] = (unsigned char *) XFASTINT (args
[n
]);
2045 /* Make room in result for all the non-%-codes in the control string. */
2046 total
+= XSTRING (args
[0])->size
;
2048 /* Format it in bigger and bigger buf's until it all fits. */
2051 buf
= (char *) alloca (total
+ 1);
2054 length
= doprnt_lisp (buf
, total
+ 1, strings
[0],
2055 end
, i
-1, strings
+ 1);
2056 if (buf
[total
- 1] == 0)
2064 return make_string (buf
, length
);
2070 format1 (string1
, arg0
, arg1
, arg2
, arg3
, arg4
)
2071 EMACS_INT arg0
, arg1
, arg2
, arg3
, arg4
;
2085 doprnt (buf
, sizeof buf
, string1
, (char *)0, 5, args
);
2087 doprnt (buf
, sizeof buf
, string1
, (char *)0, 5, &string1
+ 1);
2089 return build_string (buf
);
2092 DEFUN ("char-equal", Fchar_equal
, Schar_equal
, 2, 2, 0,
2093 "Return t if two characters match, optionally ignoring case.\n\
2094 Both arguments must be characters (i.e. integers).\n\
2095 Case is ignored if `case-fold-search' is non-nil in the current buffer.")
2097 register Lisp_Object c1
, c2
;
2099 Lisp_Object
*downcase
= DOWNCASE_TABLE
;
2100 CHECK_NUMBER (c1
, 0);
2101 CHECK_NUMBER (c2
, 1);
2103 if (!NILP (current_buffer
->case_fold_search
)
2104 ? ((XINT (downcase
[0xff & XFASTINT (c1
)])
2105 == XINT (downcase
[0xff & XFASTINT (c2
)]))
2106 && (XFASTINT (c1
) & ~0xff) == (XFASTINT (c2
) & ~0xff))
2107 : XINT (c1
) == XINT (c2
))
2112 /* Transpose the markers in two regions of the current buffer, and
2113 adjust the ones between them if necessary (i.e.: if the regions
2116 Traverses the entire marker list of the buffer to do so, adding an
2117 appropriate amount to some, subtracting from some, and leaving the
2118 rest untouched. Most of this is copied from adjust_markers in insdel.c.
2120 It's the caller's job to see that (start1 <= end1 <= start2 <= end2). */
2123 transpose_markers (start1
, end1
, start2
, end2
)
2124 register int start1
, end1
, start2
, end2
;
2126 register int amt1
, amt2
, diff
, mpos
;
2127 register Lisp_Object marker
;
2129 /* Update point as if it were a marker. */
2133 TEMP_SET_PT (PT
+ (end2
- end1
));
2134 else if (PT
< start2
)
2135 TEMP_SET_PT (PT
+ (end2
- start2
) - (end1
- start1
));
2137 TEMP_SET_PT (PT
- (start2
- start1
));
2139 /* We used to adjust the endpoints here to account for the gap, but that
2140 isn't good enough. Even if we assume the caller has tried to move the
2141 gap out of our way, it might still be at start1 exactly, for example;
2142 and that places it `inside' the interval, for our purposes. The amount
2143 of adjustment is nontrivial if there's a `denormalized' marker whose
2144 position is between GPT and GPT + GAP_SIZE, so it's simpler to leave
2145 the dirty work to Fmarker_position, below. */
2147 /* The difference between the region's lengths */
2148 diff
= (end2
- start2
) - (end1
- start1
);
2150 /* For shifting each marker in a region by the length of the other
2151 * region plus the distance between the regions.
2153 amt1
= (end2
- start2
) + (start2
- end1
);
2154 amt2
= (end1
- start1
) + (start2
- end1
);
2156 for (marker
= BUF_MARKERS (current_buffer
); !NILP (marker
);
2157 marker
= XMARKER (marker
)->chain
)
2159 mpos
= Fmarker_position (marker
);
2160 if (mpos
>= start1
&& mpos
< end2
)
2164 else if (mpos
< start2
)
2168 if (mpos
> GPT
) mpos
+= GAP_SIZE
;
2169 XMARKER (marker
)->bufpos
= mpos
;
2174 DEFUN ("transpose-regions", Ftranspose_regions
, Stranspose_regions
, 4, 5, 0,
2175 "Transpose region START1 to END1 with START2 to END2.\n\
2176 The regions may not be overlapping, because the size of the buffer is\n\
2177 never changed in a transposition.\n\
2179 Optional fifth arg LEAVE_MARKERS, if non-nil, means don't transpose\n\
2180 any markers that happen to be located in the regions.\n\
2182 Transposing beyond buffer boundaries is an error.")
2183 (startr1
, endr1
, startr2
, endr2
, leave_markers
)
2184 Lisp_Object startr1
, endr1
, startr2
, endr2
, leave_markers
;
2186 register int start1
, end1
, start2
, end2
,
2187 gap
, len1
, len_mid
, len2
;
2188 unsigned char *start1_addr
, *start2_addr
, *temp
;
2190 #ifdef USE_TEXT_PROPERTIES
2191 INTERVAL cur_intv
, tmp_interval1
, tmp_interval_mid
, tmp_interval2
;
2192 cur_intv
= BUF_INTERVALS (current_buffer
);
2193 #endif /* USE_TEXT_PROPERTIES */
2195 validate_region (&startr1
, &endr1
);
2196 validate_region (&startr2
, &endr2
);
2198 start1
= XFASTINT (startr1
);
2199 end1
= XFASTINT (endr1
);
2200 start2
= XFASTINT (startr2
);
2201 end2
= XFASTINT (endr2
);
2204 /* Swap the regions if they're reversed. */
2207 register int glumph
= start1
;
2215 len1
= end1
- start1
;
2216 len2
= end2
- start2
;
2219 error ("transposed regions not properly ordered");
2220 else if (start1
== end1
|| start2
== end2
)
2221 error ("transposed region may not be of length 0");
2223 /* The possibilities are:
2224 1. Adjacent (contiguous) regions, or separate but equal regions
2225 (no, really equal, in this case!), or
2226 2. Separate regions of unequal size.
2228 The worst case is usually No. 2. It means that (aside from
2229 potential need for getting the gap out of the way), there also
2230 needs to be a shifting of the text between the two regions. So
2231 if they are spread far apart, we are that much slower... sigh. */
2233 /* It must be pointed out that the really studly thing to do would
2234 be not to move the gap at all, but to leave it in place and work
2235 around it if necessary. This would be extremely efficient,
2236 especially considering that people are likely to do
2237 transpositions near where they are working interactively, which
2238 is exactly where the gap would be found. However, such code
2239 would be much harder to write and to read. So, if you are
2240 reading this comment and are feeling squirrely, by all means have
2241 a go! I just didn't feel like doing it, so I will simply move
2242 the gap the minimum distance to get it out of the way, and then
2243 deal with an unbroken array. */
2245 /* Make sure the gap won't interfere, by moving it out of the text
2246 we will operate on. */
2247 if (start1
< gap
&& gap
< end2
)
2249 if (gap
- start1
< end2
- gap
)
2255 /* Hmmm... how about checking to see if the gap is large
2256 enough to use as the temporary storage? That would avoid an
2257 allocation... interesting. Later, don't fool with it now. */
2259 /* Working without memmove, for portability (sigh), so must be
2260 careful of overlapping subsections of the array... */
2262 if (end1
== start2
) /* adjacent regions */
2264 modify_region (current_buffer
, start1
, end2
);
2265 record_change (start1
, len1
+ len2
);
2267 #ifdef USE_TEXT_PROPERTIES
2268 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
2269 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
2270 Fset_text_properties (start1
, end2
, Qnil
, Qnil
);
2271 #endif /* USE_TEXT_PROPERTIES */
2273 /* First region smaller than second. */
2276 /* We use alloca only if it is small,
2277 because we want to avoid stack overflow. */
2279 temp
= (unsigned char *) xmalloc (len2
);
2281 temp
= (unsigned char *) alloca (len2
);
2283 /* Don't precompute these addresses. We have to compute them
2284 at the last minute, because the relocating allocator might
2285 have moved the buffer around during the xmalloc. */
2286 start1_addr
= BUF_CHAR_ADDRESS (current_buffer
, start1
);
2287 start2_addr
= BUF_CHAR_ADDRESS (current_buffer
, start2
);
2289 bcopy (start2_addr
, temp
, len2
);
2290 bcopy (start1_addr
, start1_addr
+ len2
, len1
);
2291 bcopy (temp
, start1_addr
, len2
);
2296 /* First region not smaller than second. */
2299 temp
= (unsigned char *) xmalloc (len1
);
2301 temp
= (unsigned char *) alloca (len1
);
2302 start1_addr
= BUF_CHAR_ADDRESS (current_buffer
, start1
);
2303 start2_addr
= BUF_CHAR_ADDRESS (current_buffer
, start2
);
2304 bcopy (start1_addr
, temp
, len1
);
2305 bcopy (start2_addr
, start1_addr
, len2
);
2306 bcopy (temp
, start1_addr
+ len2
, len1
);
2310 #ifdef USE_TEXT_PROPERTIES
2311 graft_intervals_into_buffer (tmp_interval1
, start1
+ len2
,
2312 len1
, current_buffer
, 0);
2313 graft_intervals_into_buffer (tmp_interval2
, start1
,
2314 len2
, current_buffer
, 0);
2315 #endif /* USE_TEXT_PROPERTIES */
2317 /* Non-adjacent regions, because end1 != start2, bleagh... */
2321 /* Regions are same size, though, how nice. */
2323 modify_region (current_buffer
, start1
, end1
);
2324 modify_region (current_buffer
, start2
, end2
);
2325 record_change (start1
, len1
);
2326 record_change (start2
, len2
);
2327 #ifdef USE_TEXT_PROPERTIES
2328 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
2329 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
2330 Fset_text_properties (start1
, end1
, Qnil
, Qnil
);
2331 Fset_text_properties (start2
, end2
, Qnil
, Qnil
);
2332 #endif /* USE_TEXT_PROPERTIES */
2335 temp
= (unsigned char *) xmalloc (len1
);
2337 temp
= (unsigned char *) alloca (len1
);
2338 start1_addr
= BUF_CHAR_ADDRESS (current_buffer
, start1
);
2339 start2_addr
= BUF_CHAR_ADDRESS (current_buffer
, start2
);
2340 bcopy (start1_addr
, temp
, len1
);
2341 bcopy (start2_addr
, start1_addr
, len2
);
2342 bcopy (temp
, start2_addr
, len1
);
2345 #ifdef USE_TEXT_PROPERTIES
2346 graft_intervals_into_buffer (tmp_interval1
, start2
,
2347 len1
, current_buffer
, 0);
2348 graft_intervals_into_buffer (tmp_interval2
, start1
,
2349 len2
, current_buffer
, 0);
2350 #endif /* USE_TEXT_PROPERTIES */
2353 else if (len1
< len2
) /* Second region larger than first */
2354 /* Non-adjacent & unequal size, area between must also be shifted. */
2356 len_mid
= start2
- end1
;
2357 modify_region (current_buffer
, start1
, end2
);
2358 record_change (start1
, (end2
- start1
));
2359 #ifdef USE_TEXT_PROPERTIES
2360 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
2361 tmp_interval_mid
= copy_intervals (cur_intv
, end1
, len_mid
);
2362 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
2363 Fset_text_properties (start1
, end2
, Qnil
, Qnil
);
2364 #endif /* USE_TEXT_PROPERTIES */
2366 /* holds region 2 */
2368 temp
= (unsigned char *) xmalloc (len2
);
2370 temp
= (unsigned char *) alloca (len2
);
2371 start1_addr
= BUF_CHAR_ADDRESS (current_buffer
, start1
);
2372 start2_addr
= BUF_CHAR_ADDRESS (current_buffer
, start2
);
2373 bcopy (start2_addr
, temp
, len2
);
2374 bcopy (start1_addr
, start1_addr
+ len_mid
+ len2
, len1
);
2375 safe_bcopy (start1_addr
+ len1
, start1_addr
+ len2
, len_mid
);
2376 bcopy (temp
, start1_addr
, len2
);
2379 #ifdef USE_TEXT_PROPERTIES
2380 graft_intervals_into_buffer (tmp_interval1
, end2
- len1
,
2381 len1
, current_buffer
, 0);
2382 graft_intervals_into_buffer (tmp_interval_mid
, start1
+ len2
,
2383 len_mid
, current_buffer
, 0);
2384 graft_intervals_into_buffer (tmp_interval2
, start1
,
2385 len2
, current_buffer
, 0);
2386 #endif /* USE_TEXT_PROPERTIES */
2389 /* Second region smaller than first. */
2391 len_mid
= start2
- end1
;
2392 record_change (start1
, (end2
- start1
));
2393 modify_region (current_buffer
, start1
, end2
);
2395 #ifdef USE_TEXT_PROPERTIES
2396 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
2397 tmp_interval_mid
= copy_intervals (cur_intv
, end1
, len_mid
);
2398 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
2399 Fset_text_properties (start1
, end2
, Qnil
, Qnil
);
2400 #endif /* USE_TEXT_PROPERTIES */
2402 /* holds region 1 */
2404 temp
= (unsigned char *) xmalloc (len1
);
2406 temp
= (unsigned char *) alloca (len1
);
2407 start1_addr
= BUF_CHAR_ADDRESS (current_buffer
, start1
);
2408 start2_addr
= BUF_CHAR_ADDRESS (current_buffer
, start2
);
2409 bcopy (start1_addr
, temp
, len1
);
2410 bcopy (start2_addr
, start1_addr
, len2
);
2411 bcopy (start1_addr
+ len1
, start1_addr
+ len2
, len_mid
);
2412 bcopy (temp
, start1_addr
+ len2
+ len_mid
, len1
);
2415 #ifdef USE_TEXT_PROPERTIES
2416 graft_intervals_into_buffer (tmp_interval1
, end2
- len1
,
2417 len1
, current_buffer
, 0);
2418 graft_intervals_into_buffer (tmp_interval_mid
, start1
+ len2
,
2419 len_mid
, current_buffer
, 0);
2420 graft_intervals_into_buffer (tmp_interval2
, start1
,
2421 len2
, current_buffer
, 0);
2422 #endif /* USE_TEXT_PROPERTIES */
2426 /* todo: this will be slow, because for every transposition, we
2427 traverse the whole friggin marker list. Possible solutions:
2428 somehow get a list of *all* the markers across multiple
2429 transpositions and do it all in one swell phoop. Or maybe modify
2430 Emacs' marker code to keep an ordered list or tree. This might
2431 be nicer, and more beneficial in the long run, but would be a
2432 bunch of work. Plus the way they're arranged now is nice. */
2433 if (NILP (leave_markers
))
2435 transpose_markers (start1
, end1
, start2
, end2
);
2436 fix_overlays_in_range (start1
, end2
);
2448 Qbuffer_access_fontify_functions
2449 = intern ("buffer-access-fontify-functions");
2450 staticpro (&Qbuffer_access_fontify_functions
);
2452 DEFVAR_LISP ("buffer-access-fontify-functions",
2453 &Vbuffer_access_fontify_functions
,
2454 "List of functions called by `buffer-substring' to fontify if necessary.\n\
2455 Each function is called with two arguments which specify the range\n\
2456 of the buffer being accessed.");
2457 Vbuffer_access_fontify_functions
= Qnil
;
2461 extern Lisp_Object Vprin1_to_string_buffer
;
2462 obuf
= Fcurrent_buffer ();
2463 /* Do this here, because init_buffer_once is too early--it won't work. */
2464 Fset_buffer (Vprin1_to_string_buffer
);
2465 /* Make sure buffer-access-fontify-functions is nil in this buffer. */
2466 Fset (Fmake_local_variable (intern ("buffer-access-fontify-functions")),
2471 DEFVAR_LISP ("buffer-access-fontified-property",
2472 &Vbuffer_access_fontified_property
,
2473 "Property which (if non-nil) indicates text has been fontified.\n\
2474 `buffer-substring' need not call the `buffer-access-fontify-functions'\n\
2475 functions if all the text being accessed has this property.");
2476 Vbuffer_access_fontified_property
= Qnil
;
2478 DEFVAR_LISP ("system-name", &Vsystem_name
,
2479 "The name of the machine Emacs is running on.");
2481 DEFVAR_LISP ("user-full-name", &Vuser_full_name
,
2482 "The full name of the user logged in.");
2484 DEFVAR_LISP ("user-login-name", &Vuser_login_name
,
2485 "The user's name, taken from environment variables if possible.");
2487 DEFVAR_LISP ("user-real-login-name", &Vuser_real_login_name
,
2488 "The user's name, based upon the real uid only.");
2490 defsubr (&Schar_equal
);
2491 defsubr (&Sgoto_char
);
2492 defsubr (&Sstring_to_char
);
2493 defsubr (&Schar_to_string
);
2494 defsubr (&Sbuffer_substring
);
2495 defsubr (&Sbuffer_substring_no_properties
);
2496 defsubr (&Sbuffer_string
);
2498 defsubr (&Spoint_marker
);
2499 defsubr (&Smark_marker
);
2501 defsubr (&Sregion_beginning
);
2502 defsubr (&Sregion_end
);
2503 /* defsubr (&Smark); */
2504 /* defsubr (&Sset_mark); */
2505 defsubr (&Ssave_excursion
);
2507 defsubr (&Sbufsize
);
2508 defsubr (&Spoint_max
);
2509 defsubr (&Spoint_min
);
2510 defsubr (&Spoint_min_marker
);
2511 defsubr (&Spoint_max_marker
);
2517 defsubr (&Sfollowing_char
);
2518 defsubr (&Sprevious_char
);
2519 defsubr (&Schar_after
);
2521 defsubr (&Sinsert_before_markers
);
2522 defsubr (&Sinsert_and_inherit
);
2523 defsubr (&Sinsert_and_inherit_before_markers
);
2524 defsubr (&Sinsert_char
);
2526 defsubr (&Suser_login_name
);
2527 defsubr (&Suser_real_login_name
);
2528 defsubr (&Suser_uid
);
2529 defsubr (&Suser_real_uid
);
2530 defsubr (&Suser_full_name
);
2531 defsubr (&Semacs_pid
);
2532 defsubr (&Scurrent_time
);
2533 defsubr (&Sformat_time_string
);
2534 defsubr (&Sdecode_time
);
2535 defsubr (&Sencode_time
);
2536 defsubr (&Scurrent_time_string
);
2537 defsubr (&Scurrent_time_zone
);
2538 defsubr (&Sset_time_zone_rule
);
2539 defsubr (&Ssystem_name
);
2540 defsubr (&Smessage
);
2541 defsubr (&Smessage_box
);
2542 defsubr (&Smessage_or_box
);
2545 defsubr (&Sinsert_buffer_substring
);
2546 defsubr (&Scompare_buffer_substrings
);
2547 defsubr (&Ssubst_char_in_region
);
2548 defsubr (&Stranslate_region
);
2549 defsubr (&Sdelete_region
);
2551 defsubr (&Snarrow_to_region
);
2552 defsubr (&Ssave_restriction
);
2553 defsubr (&Stranspose_regions
);