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 XSETFASTINT (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);
770 error ("Invalid time zone specification");
772 /* Set TZ before calling mktime; merely adjusting mktime's returned
773 value doesn't suffice, since that would mishandle leap seconds. */
774 set_time_zone_rule (tzstring
);
778 /* Restore TZ to previous value. */
782 #ifdef LOCALTIME_CACHE
787 if (time
== (time_t) -1)
788 error ("Specified time is not representable");
790 return make_time (time
);
793 DEFUN ("current-time-string", Fcurrent_time_string
, Scurrent_time_string
, 0, 1, 0,
794 "Return the current time, as a human-readable string.\n\
795 Programs can use this function to decode a time,\n\
796 since the number of columns in each field is fixed.\n\
797 The format is `Sun Sep 16 01:03:52 1973'.\n\
798 If an argument is given, it specifies a time to format\n\
799 instead of the current time. The argument should have the form:\n\
802 (HIGH LOW . IGNORED).\n\
803 Thus, you can use times obtained from `current-time'\n\
804 and from `file-attributes'.")
806 Lisp_Object specified_time
;
812 if (! lisp_time_argument (specified_time
, &value
))
814 tem
= (char *) ctime (&value
);
816 strncpy (buf
, tem
, 24);
819 return build_string (buf
);
822 #define TM_YEAR_ORIGIN 1900
824 /* Yield A - B, measured in seconds. */
829 int ay
= a
->tm_year
+ (TM_YEAR_ORIGIN
- 1);
830 int by
= b
->tm_year
+ (TM_YEAR_ORIGIN
- 1);
831 /* Some compilers can't handle this as a single return statement. */
833 /* difference in day of year */
834 a
->tm_yday
- b
->tm_yday
835 /* + intervening leap days */
836 + ((ay
>> 2) - (by
>> 2))
838 + ((ay
/100 >> 2) - (by
/100 >> 2))
839 /* + difference in years * 365 */
840 + (long)(ay
-by
) * 365
842 return (60*(60*(24*days
+ (a
->tm_hour
- b
->tm_hour
))
843 + (a
->tm_min
- b
->tm_min
))
844 + (a
->tm_sec
- b
->tm_sec
));
847 DEFUN ("current-time-zone", Fcurrent_time_zone
, Scurrent_time_zone
, 0, 1, 0,
848 "Return the offset and name for the local time zone.\n\
849 This returns a list of the form (OFFSET NAME).\n\
850 OFFSET is an integer number of seconds ahead of UTC (east of Greenwich).\n\
851 A negative value means west of Greenwich.\n\
852 NAME is a string giving the name of the time zone.\n\
853 If an argument is given, it specifies when the time zone offset is determined\n\
854 instead of using the current time. The argument should have the form:\n\
857 (HIGH LOW . IGNORED).\n\
858 Thus, you can use times obtained from `current-time'\n\
859 and from `file-attributes'.\n\
861 Some operating systems cannot provide all this information to Emacs;\n\
862 in this case, `current-time-zone' returns a list containing nil for\n\
863 the data it can't find.")
865 Lisp_Object specified_time
;
870 if (lisp_time_argument (specified_time
, &value
)
871 && (t
= gmtime (&value
)) != 0)
877 gmt
= *t
; /* Make a copy, in case localtime modifies *t. */
878 t
= localtime (&value
);
879 offset
= difftm (t
, &gmt
);
883 s
= (char *)t
->tm_zone
;
884 #else /* not HAVE_TM_ZONE */
886 if (t
->tm_isdst
== 0 || t
->tm_isdst
== 1)
887 s
= tzname
[t
->tm_isdst
];
889 #endif /* not HAVE_TM_ZONE */
892 /* No local time zone name is available; use "+-NNNN" instead. */
893 int am
= (offset
< 0 ? -offset
: offset
) / 60;
894 sprintf (buf
, "%c%02d%02d", (offset
< 0 ? '-' : '+'), am
/60, am
%60);
897 return Fcons (make_number (offset
), Fcons (build_string (s
), Qnil
));
900 return Fmake_list (2, Qnil
);
903 /* This holds the value of `environ' produced by the previous
904 call to Fset_time_zone_rule, or 0 if Fset_time_zone_rule
905 has never been called. */
906 static char **environbuf
;
908 DEFUN ("set-time-zone-rule", Fset_time_zone_rule
, Sset_time_zone_rule
, 1, 1, 0,
909 "Set the local time zone using TZ, a string specifying a time zone rule.\n\
910 If TZ is nil, use implementation-defined default time zone information.")
920 CHECK_STRING (tz
, 0);
921 tzstring
= (char *) XSTRING (tz
)->data
;
924 set_time_zone_rule (tzstring
);
927 environbuf
= environ
;
932 /* Set the local time zone rule to TZSTRING.
933 This allocates memory into `environ', which it is the caller's
934 responsibility to free. */
936 set_time_zone_rule (tzstring
)
940 char **from
, **to
, **newenv
;
942 for (from
= environ
; *from
; from
++)
944 envptrs
= from
- environ
+ 2;
945 newenv
= to
= (char **) xmalloc (envptrs
* sizeof (char *)
946 + (tzstring
? strlen (tzstring
) + 4 : 0));
949 char *t
= (char *) (to
+ envptrs
);
951 strcat (t
, tzstring
);
955 for (from
= environ
; *from
; from
++)
956 if (strncmp (*from
, "TZ=", 3) != 0)
962 #ifdef LOCALTIME_CACHE
975 /* Callers passing one argument to Finsert need not gcpro the
976 argument "array", since the only element of the array will
977 not be used after calling insert or insert_from_string, so
978 we don't care if it gets trashed. */
980 DEFUN ("insert", Finsert
, Sinsert
, 0, MANY
, 0,
981 "Insert the arguments, either strings or characters, at point.\n\
982 Point moves forward so that it ends up after the inserted text.\n\
983 Any other markers at the point of insertion remain before the text.")
986 register Lisp_Object
*args
;
989 register Lisp_Object tem
;
992 for (argnum
= 0; argnum
< nargs
; argnum
++)
1001 else if (STRINGP (tem
))
1003 insert_from_string (tem
, 0, XSTRING (tem
)->size
, 0);
1007 tem
= wrong_type_argument (Qchar_or_string_p
, tem
);
1015 DEFUN ("insert-and-inherit", Finsert_and_inherit
, Sinsert_and_inherit
,
1017 "Insert the arguments at point, inheriting properties from adjoining text.\n\
1018 Point moves forward so that it ends up after the inserted text.\n\
1019 Any other markers at the point of insertion remain before the text.")
1022 register Lisp_Object
*args
;
1024 register int argnum
;
1025 register Lisp_Object tem
;
1028 for (argnum
= 0; argnum
< nargs
; argnum
++)
1034 str
[0] = XINT (tem
);
1035 insert_and_inherit (str
, 1);
1037 else if (STRINGP (tem
))
1039 insert_from_string (tem
, 0, XSTRING (tem
)->size
, 1);
1043 tem
= wrong_type_argument (Qchar_or_string_p
, tem
);
1051 DEFUN ("insert-before-markers", Finsert_before_markers
, Sinsert_before_markers
, 0, MANY
, 0,
1052 "Insert strings or characters at point, relocating markers after the text.\n\
1053 Point moves forward so that it ends up after the inserted text.\n\
1054 Any other markers at the point of insertion also end up after the text.")
1057 register Lisp_Object
*args
;
1059 register int argnum
;
1060 register Lisp_Object tem
;
1063 for (argnum
= 0; argnum
< nargs
; argnum
++)
1069 str
[0] = XINT (tem
);
1070 insert_before_markers (str
, 1);
1072 else if (STRINGP (tem
))
1074 insert_from_string_before_markers (tem
, 0, XSTRING (tem
)->size
, 0);
1078 tem
= wrong_type_argument (Qchar_or_string_p
, tem
);
1086 DEFUN ("insert-before-markers-and-inherit",
1087 Finsert_and_inherit_before_markers
, Sinsert_and_inherit_before_markers
,
1089 "Insert text at point, relocating markers and inheriting properties.\n\
1090 Point moves forward so that it ends up after the inserted text.\n\
1091 Any other markers at the point of insertion also end up after the text.")
1094 register Lisp_Object
*args
;
1096 register int argnum
;
1097 register Lisp_Object tem
;
1100 for (argnum
= 0; argnum
< nargs
; argnum
++)
1106 str
[0] = XINT (tem
);
1107 insert_before_markers_and_inherit (str
, 1);
1109 else if (STRINGP (tem
))
1111 insert_from_string_before_markers (tem
, 0, XSTRING (tem
)->size
, 1);
1115 tem
= wrong_type_argument (Qchar_or_string_p
, tem
);
1123 DEFUN ("insert-char", Finsert_char
, Sinsert_char
, 2, 3, 0,
1124 "Insert COUNT (second arg) copies of CHARACTER (first arg).\n\
1125 Point and all markers are affected as in the function `insert'.\n\
1126 Both arguments are required.\n\
1127 The optional third arg INHERIT, if non-nil, says to inherit text properties\n\
1128 from adjoining text, if those properties are sticky.")
1129 (character
, count
, inherit
)
1130 Lisp_Object character
, count
, inherit
;
1132 register unsigned char *string
;
1133 register int strlen
;
1136 CHECK_NUMBER (character
, 0);
1137 CHECK_NUMBER (count
, 1);
1142 strlen
= min (n
, 256);
1143 string
= (unsigned char *) alloca (strlen
);
1144 for (i
= 0; i
< strlen
; i
++)
1145 string
[i
] = XFASTINT (character
);
1148 if (!NILP (inherit
))
1149 insert_and_inherit (string
, strlen
);
1151 insert (string
, strlen
);
1156 if (!NILP (inherit
))
1157 insert_and_inherit (string
, n
);
1165 /* Making strings from buffer contents. */
1167 /* Return a Lisp_String containing the text of the current buffer from
1168 START to END. If text properties are in use and the current buffer
1169 has properties in the range specified, the resulting string will also
1170 have them, if PROPS is nonzero.
1172 We don't want to use plain old make_string here, because it calls
1173 make_uninit_string, which can cause the buffer arena to be
1174 compacted. make_string has no way of knowing that the data has
1175 been moved, and thus copies the wrong data into the string. This
1176 doesn't effect most of the other users of make_string, so it should
1177 be left as is. But we should use this function when conjuring
1178 buffer substrings. */
1181 make_buffer_string (start
, end
, props
)
1185 Lisp_Object result
, tem
, tem1
;
1187 if (start
< GPT
&& GPT
< end
)
1190 result
= make_uninit_string (end
- start
);
1191 bcopy (&FETCH_CHAR (start
), XSTRING (result
)->data
, end
- start
);
1193 /* If desired, update and copy the text properties. */
1194 #ifdef USE_TEXT_PROPERTIES
1197 update_buffer_properties (start
, end
);
1199 tem
= Fnext_property_change (make_number (start
), Qnil
, make_number (end
));
1200 tem1
= Ftext_properties_at (make_number (start
), Qnil
);
1202 if (XINT (tem
) != end
|| !NILP (tem1
))
1203 copy_intervals_to_string (result
, current_buffer
, start
, end
- start
);
1210 /* Call Vbuffer_access_fontify_functions for the range START ... END
1211 in the current buffer, if necessary. */
1214 update_buffer_properties (start
, end
)
1217 #ifdef USE_TEXT_PROPERTIES
1218 /* If this buffer has some access functions,
1219 call them, specifying the range of the buffer being accessed. */
1220 if (!NILP (Vbuffer_access_fontify_functions
))
1222 Lisp_Object args
[3];
1225 args
[0] = Qbuffer_access_fontify_functions
;
1226 XSETINT (args
[1], start
);
1227 XSETINT (args
[2], end
);
1229 /* But don't call them if we can tell that the work
1230 has already been done. */
1231 if (!NILP (Vbuffer_access_fontified_property
))
1233 tem
= Ftext_property_any (args
[1], args
[2],
1234 Vbuffer_access_fontified_property
,
1237 Frun_hook_with_args (3, args
);
1240 Frun_hook_with_args (3, args
);
1245 DEFUN ("buffer-substring", Fbuffer_substring
, Sbuffer_substring
, 2, 2, 0,
1246 "Return the contents of part of the current buffer as a string.\n\
1247 The two arguments START and END are character positions;\n\
1248 they can be in either order.")
1250 Lisp_Object start
, end
;
1254 validate_region (&start
, &end
);
1258 return make_buffer_string (b
, e
, 1);
1261 DEFUN ("buffer-substring-no-properties", Fbuffer_substring_no_properties
,
1262 Sbuffer_substring_no_properties
, 2, 2, 0,
1263 "Return the characters of part of the buffer, without the text properties.\n\
1264 The two arguments START and END are character positions;\n\
1265 they can be in either order.")
1267 Lisp_Object start
, end
;
1271 validate_region (&start
, &end
);
1275 return make_buffer_string (b
, e
, 0);
1278 DEFUN ("buffer-string", Fbuffer_string
, Sbuffer_string
, 0, 0, 0,
1279 "Return the contents of the current buffer as a string.\n\
1280 If narrowing is in effect, this function returns only the visible part\n\
1284 return make_buffer_string (BEGV
, ZV
, 1);
1287 DEFUN ("insert-buffer-substring", Finsert_buffer_substring
, Sinsert_buffer_substring
,
1289 "Insert before point a substring of the contents of buffer BUFFER.\n\
1290 BUFFER may be a buffer or a buffer name.\n\
1291 Arguments START and END are character numbers specifying the substring.\n\
1292 They default to the beginning and the end of BUFFER.")
1294 Lisp_Object buf
, start
, end
;
1296 register int b
, e
, temp
;
1297 register struct buffer
*bp
, *obuf
;
1300 buffer
= Fget_buffer (buf
);
1303 bp
= XBUFFER (buffer
);
1309 CHECK_NUMBER_COERCE_MARKER (start
, 0);
1316 CHECK_NUMBER_COERCE_MARKER (end
, 1);
1321 temp
= b
, b
= e
, e
= temp
;
1323 if (!(BUF_BEGV (bp
) <= b
&& e
<= BUF_ZV (bp
)))
1324 args_out_of_range (start
, end
);
1326 obuf
= current_buffer
;
1327 set_buffer_internal_1 (bp
);
1328 update_buffer_properties (b
, e
);
1329 set_buffer_internal_1 (obuf
);
1331 insert_from_buffer (bp
, b
, e
- b
, 0);
1335 DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings
, Scompare_buffer_substrings
,
1337 "Compare two substrings of two buffers; return result as number.\n\
1338 the value is -N if first string is less after N-1 chars,\n\
1339 +N if first string is greater after N-1 chars, or 0 if strings match.\n\
1340 Each substring is represented as three arguments: BUFFER, START and END.\n\
1341 That makes six args in all, three for each substring.\n\n\
1342 The value of `case-fold-search' in the current buffer\n\
1343 determines whether case is significant or ignored.")
1344 (buffer1
, start1
, end1
, buffer2
, start2
, end2
)
1345 Lisp_Object buffer1
, start1
, end1
, buffer2
, start2
, end2
;
1347 register int begp1
, endp1
, begp2
, endp2
, temp
, len1
, len2
, length
, i
;
1348 register struct buffer
*bp1
, *bp2
;
1349 register Lisp_Object
*trt
1350 = (!NILP (current_buffer
->case_fold_search
)
1351 ? XCHAR_TABLE (current_buffer
->case_canon_table
)->contents
: 0);
1353 /* Find the first buffer and its substring. */
1356 bp1
= current_buffer
;
1360 buf1
= Fget_buffer (buffer1
);
1363 bp1
= XBUFFER (buf1
);
1367 begp1
= BUF_BEGV (bp1
);
1370 CHECK_NUMBER_COERCE_MARKER (start1
, 1);
1371 begp1
= XINT (start1
);
1374 endp1
= BUF_ZV (bp1
);
1377 CHECK_NUMBER_COERCE_MARKER (end1
, 2);
1378 endp1
= XINT (end1
);
1382 temp
= begp1
, begp1
= endp1
, endp1
= temp
;
1384 if (!(BUF_BEGV (bp1
) <= begp1
1386 && endp1
<= BUF_ZV (bp1
)))
1387 args_out_of_range (start1
, end1
);
1389 /* Likewise for second substring. */
1392 bp2
= current_buffer
;
1396 buf2
= Fget_buffer (buffer2
);
1399 bp2
= XBUFFER (buf2
);
1403 begp2
= BUF_BEGV (bp2
);
1406 CHECK_NUMBER_COERCE_MARKER (start2
, 4);
1407 begp2
= XINT (start2
);
1410 endp2
= BUF_ZV (bp2
);
1413 CHECK_NUMBER_COERCE_MARKER (end2
, 5);
1414 endp2
= XINT (end2
);
1418 temp
= begp2
, begp2
= endp2
, endp2
= temp
;
1420 if (!(BUF_BEGV (bp2
) <= begp2
1422 && endp2
<= BUF_ZV (bp2
)))
1423 args_out_of_range (start2
, end2
);
1425 len1
= endp1
- begp1
;
1426 len2
= endp2
- begp2
;
1431 for (i
= 0; i
< length
; i
++)
1433 int c1
= *BUF_CHAR_ADDRESS (bp1
, begp1
+ i
);
1434 int c2
= *BUF_CHAR_ADDRESS (bp2
, begp2
+ i
);
1441 return make_number (- 1 - i
);
1443 return make_number (i
+ 1);
1446 /* The strings match as far as they go.
1447 If one is shorter, that one is less. */
1449 return make_number (length
+ 1);
1450 else if (length
< len2
)
1451 return make_number (- length
- 1);
1453 /* Same length too => they are equal. */
1454 return make_number (0);
1458 subst_char_in_region_unwind (arg
)
1461 return current_buffer
->undo_list
= arg
;
1465 subst_char_in_region_unwind_1 (arg
)
1468 return current_buffer
->filename
= arg
;
1471 DEFUN ("subst-char-in-region", Fsubst_char_in_region
,
1472 Ssubst_char_in_region
, 4, 5, 0,
1473 "From START to END, replace FROMCHAR with TOCHAR each time it occurs.\n\
1474 If optional arg NOUNDO is non-nil, don't record this change for undo\n\
1475 and don't mark the buffer as really changed.")
1476 (start
, end
, fromchar
, tochar
, noundo
)
1477 Lisp_Object start
, end
, fromchar
, tochar
, noundo
;
1479 register int pos
, stop
, look
;
1481 int count
= specpdl_ptr
- specpdl
;
1483 validate_region (&start
, &end
);
1484 CHECK_NUMBER (fromchar
, 2);
1485 CHECK_NUMBER (tochar
, 3);
1489 look
= XINT (fromchar
);
1491 /* If we don't want undo, turn off putting stuff on the list.
1492 That's faster than getting rid of things,
1493 and it prevents even the entry for a first change.
1494 Also inhibit locking the file. */
1497 record_unwind_protect (subst_char_in_region_unwind
,
1498 current_buffer
->undo_list
);
1499 current_buffer
->undo_list
= Qt
;
1500 /* Don't do file-locking. */
1501 record_unwind_protect (subst_char_in_region_unwind_1
,
1502 current_buffer
->filename
);
1503 current_buffer
->filename
= Qnil
;
1508 if (FETCH_CHAR (pos
) == look
)
1512 modify_region (current_buffer
, XINT (start
), stop
);
1514 if (! NILP (noundo
))
1516 if (MODIFF
- 1 == SAVE_MODIFF
)
1518 if (MODIFF
- 1 == current_buffer
->auto_save_modified
)
1519 current_buffer
->auto_save_modified
++;
1526 record_change (pos
, 1);
1527 FETCH_CHAR (pos
) = XINT (tochar
);
1533 signal_after_change (XINT (start
),
1534 stop
- XINT (start
), stop
- XINT (start
));
1536 unbind_to (count
, Qnil
);
1540 DEFUN ("translate-region", Ftranslate_region
, Stranslate_region
, 3, 3, 0,
1541 "From START to END, translate characters according to TABLE.\n\
1542 TABLE is a string; the Nth character in it is the mapping\n\
1543 for the character with code N. Returns the number of characters changed.")
1547 register Lisp_Object table
;
1549 register int pos
, stop
; /* Limits of the region. */
1550 register unsigned char *tt
; /* Trans table. */
1551 register int oc
; /* Old character. */
1552 register int nc
; /* New character. */
1553 int cnt
; /* Number of changes made. */
1554 Lisp_Object z
; /* Return. */
1555 int size
; /* Size of translate table. */
1557 validate_region (&start
, &end
);
1558 CHECK_STRING (table
, 2);
1560 size
= XSTRING (table
)->size
;
1561 tt
= XSTRING (table
)->data
;
1565 modify_region (current_buffer
, pos
, stop
);
1568 for (; pos
< stop
; ++pos
)
1570 oc
= FETCH_CHAR (pos
);
1576 record_change (pos
, 1);
1577 FETCH_CHAR (pos
) = nc
;
1578 signal_after_change (pos
, 1, 1);
1584 XSETFASTINT (z
, cnt
);
1588 DEFUN ("delete-region", Fdelete_region
, Sdelete_region
, 2, 2, "r",
1589 "Delete the text between point and mark.\n\
1590 When called from a program, expects two arguments,\n\
1591 positions (integers or markers) specifying the stretch to be deleted.")
1593 Lisp_Object start
, end
;
1595 validate_region (&start
, &end
);
1596 del_range (XINT (start
), XINT (end
));
1600 DEFUN ("widen", Fwiden
, Swiden
, 0, 0, "",
1601 "Remove restrictions (narrowing) from current buffer.\n\
1602 This allows the buffer's full text to be seen and edited.")
1606 SET_BUF_ZV (current_buffer
, Z
);
1607 current_buffer
->clip_changed
= 1;
1608 /* Changing the buffer bounds invalidates any recorded current column. */
1609 invalidate_current_column ();
1613 DEFUN ("narrow-to-region", Fnarrow_to_region
, Snarrow_to_region
, 2, 2, "r",
1614 "Restrict editing in this buffer to the current region.\n\
1615 The rest of the text becomes temporarily invisible and untouchable\n\
1616 but is not deleted; if you save the buffer in a file, the invisible\n\
1617 text is included in the file. \\[widen] makes all visible again.\n\
1618 See also `save-restriction'.\n\
1620 When calling from a program, pass two arguments; positions (integers\n\
1621 or markers) bounding the text that should remain visible.")
1623 register Lisp_Object start
, end
;
1625 CHECK_NUMBER_COERCE_MARKER (start
, 0);
1626 CHECK_NUMBER_COERCE_MARKER (end
, 1);
1628 if (XINT (start
) > XINT (end
))
1631 tem
= start
; start
= end
; end
= tem
;
1634 if (!(BEG
<= XINT (start
) && XINT (start
) <= XINT (end
) && XINT (end
) <= Z
))
1635 args_out_of_range (start
, end
);
1637 BEGV
= XFASTINT (start
);
1638 SET_BUF_ZV (current_buffer
, XFASTINT (end
));
1639 if (point
< XFASTINT (start
))
1640 SET_PT (XFASTINT (start
));
1641 if (point
> XFASTINT (end
))
1642 SET_PT (XFASTINT (end
));
1643 current_buffer
->clip_changed
= 1;
1644 /* Changing the buffer bounds invalidates any recorded current column. */
1645 invalidate_current_column ();
1650 save_restriction_save ()
1652 register Lisp_Object bottom
, top
;
1653 /* Note: I tried using markers here, but it does not win
1654 because insertion at the end of the saved region
1655 does not advance mh and is considered "outside" the saved region. */
1656 XSETFASTINT (bottom
, BEGV
- BEG
);
1657 XSETFASTINT (top
, Z
- ZV
);
1659 return Fcons (Fcurrent_buffer (), Fcons (bottom
, top
));
1663 save_restriction_restore (data
)
1666 register struct buffer
*buf
;
1667 register int newhead
, newtail
;
1668 register Lisp_Object tem
;
1670 buf
= XBUFFER (XCONS (data
)->car
);
1672 data
= XCONS (data
)->cdr
;
1674 tem
= XCONS (data
)->car
;
1675 newhead
= XINT (tem
);
1676 tem
= XCONS (data
)->cdr
;
1677 newtail
= XINT (tem
);
1678 if (newhead
+ newtail
> BUF_Z (buf
) - BUF_BEG (buf
))
1683 BUF_BEGV (buf
) = BUF_BEG (buf
) + newhead
;
1684 SET_BUF_ZV (buf
, BUF_Z (buf
) - newtail
);
1685 current_buffer
->clip_changed
= 1;
1687 /* If point is outside the new visible range, move it inside. */
1689 clip_to_bounds (BUF_BEGV (buf
), BUF_PT (buf
), BUF_ZV (buf
)));
1694 DEFUN ("save-restriction", Fsave_restriction
, Ssave_restriction
, 0, UNEVALLED
, 0,
1695 "Execute BODY, saving and restoring current buffer's restrictions.\n\
1696 The buffer's restrictions make parts of the beginning and end invisible.\n\
1697 \(They are set up with `narrow-to-region' and eliminated with `widen'.)\n\
1698 This special form, `save-restriction', saves the current buffer's restrictions\n\
1699 when it is entered, and restores them when it is exited.\n\
1700 So any `narrow-to-region' within BODY lasts only until the end of the form.\n\
1701 The old restrictions settings are restored\n\
1702 even in case of abnormal exit (throw or error).\n\
1704 The value returned is the value of the last form in BODY.\n\
1706 `save-restriction' can get confused if, within the BODY, you widen\n\
1707 and then make changes outside the area within the saved restrictions.\n\
1709 Note: if you are using both `save-excursion' and `save-restriction',\n\
1710 use `save-excursion' outermost:\n\
1711 (save-excursion (save-restriction ...))")
1715 register Lisp_Object val
;
1716 int count
= specpdl_ptr
- specpdl
;
1718 record_unwind_protect (save_restriction_restore
, save_restriction_save ());
1719 val
= Fprogn (body
);
1720 return unbind_to (count
, val
);
1723 /* Buffer for the most recent text displayed by Fmessage. */
1724 static char *message_text
;
1726 /* Allocated length of that buffer. */
1727 static int message_length
;
1729 DEFUN ("message", Fmessage
, Smessage
, 1, MANY
, 0,
1730 "Print a one-line message at the bottom of the screen.\n\
1731 The first argument is a format control string, and the rest are data\n\
1732 to be formatted under control of the string. See `format' for details.\n\
1734 If the first argument is nil, clear any existing message; let the\n\
1735 minibuffer contents show.")
1747 register Lisp_Object val
;
1748 val
= Fformat (nargs
, args
);
1749 /* Copy the data so that it won't move when we GC. */
1752 message_text
= (char *)xmalloc (80);
1753 message_length
= 80;
1755 if (XSTRING (val
)->size
> message_length
)
1757 message_length
= XSTRING (val
)->size
;
1758 message_text
= (char *)xrealloc (message_text
, message_length
);
1760 bcopy (XSTRING (val
)->data
, message_text
, XSTRING (val
)->size
);
1761 message2 (message_text
, XSTRING (val
)->size
);
1766 DEFUN ("message-box", Fmessage_box
, Smessage_box
, 1, MANY
, 0,
1767 "Display a message, in a dialog box if possible.\n\
1768 If a dialog box is not available, use the echo area.\n\
1769 The first argument is a format control string, and the rest are data\n\
1770 to be formatted under control of the string. See `format' for details.\n\
1772 If the first argument is nil, clear any existing message; let the\n\
1773 minibuffer contents show.")
1785 register Lisp_Object val
;
1786 val
= Fformat (nargs
, args
);
1789 Lisp_Object pane
, menu
, obj
;
1790 struct gcpro gcpro1
;
1791 pane
= Fcons (Fcons (build_string ("OK"), Qt
), Qnil
);
1793 menu
= Fcons (val
, pane
);
1794 obj
= Fx_popup_dialog (Qt
, menu
);
1798 #else /* not HAVE_MENUS */
1799 /* Copy the data so that it won't move when we GC. */
1802 message_text
= (char *)xmalloc (80);
1803 message_length
= 80;
1805 if (XSTRING (val
)->size
> message_length
)
1807 message_length
= XSTRING (val
)->size
;
1808 message_text
= (char *)xrealloc (message_text
, message_length
);
1810 bcopy (XSTRING (val
)->data
, message_text
, XSTRING (val
)->size
);
1811 message2 (message_text
, XSTRING (val
)->size
);
1813 #endif /* not HAVE_MENUS */
1817 extern Lisp_Object last_nonmenu_event
;
1820 DEFUN ("message-or-box", Fmessage_or_box
, Smessage_or_box
, 1, MANY
, 0,
1821 "Display a message in a dialog box or in the echo area.\n\
1822 If this command was invoked with the mouse, use a dialog box.\n\
1823 Otherwise, 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.")
1834 if (NILP (last_nonmenu_event
) || CONSP (last_nonmenu_event
))
1835 return Fmessage_box (nargs
, args
);
1837 return Fmessage (nargs
, args
);
1840 DEFUN ("format", Fformat
, Sformat
, 1, MANY
, 0,
1841 "Format a string out of a control-string and arguments.\n\
1842 The first argument is a control string.\n\
1843 The other arguments are substituted into it to make the result, a string.\n\
1844 It may contain %-sequences meaning to substitute the next argument.\n\
1845 %s means print a string argument. Actually, prints any object, with `princ'.\n\
1846 %d means print as number in decimal (%o octal, %x hex).\n\
1847 %e means print a number in exponential notation.\n\
1848 %f means print a number in decimal-point notation.\n\
1849 %g means print a number in exponential notation\n\
1850 or decimal-point notation, whichever uses fewer characters.\n\
1851 %c means print a number as a single character.\n\
1852 %S means print any object as an s-expression (using prin1).\n\
1853 The argument used for %d, %o, %x, %e, %f, %g or %c must be a number.\n\
1854 Use %% to put a single % into the output.")
1857 register Lisp_Object
*args
;
1859 register int n
; /* The number of the next arg to substitute */
1860 register int total
= 5; /* An estimate of the final length */
1862 register unsigned char *format
, *end
;
1864 extern char *index ();
1865 /* It should not be necessary to GCPRO ARGS, because
1866 the caller in the interpreter should take care of that. */
1868 CHECK_STRING (args
[0], 0);
1869 format
= XSTRING (args
[0])->data
;
1870 end
= format
+ XSTRING (args
[0])->size
;
1873 while (format
!= end
)
1874 if (*format
++ == '%')
1878 /* Process a numeric arg and skip it. */
1879 minlen
= atoi (format
);
1883 while ((*format
>= '0' && *format
<= '9')
1884 || *format
== '-' || *format
== ' ' || *format
== '.')
1889 else if (++n
>= nargs
)
1890 error ("Not enough arguments for format string");
1891 else if (*format
== 'S')
1893 /* For `S', prin1 the argument and then treat like a string. */
1894 register Lisp_Object tem
;
1895 tem
= Fprin1_to_string (args
[n
], Qnil
);
1899 else if (SYMBOLP (args
[n
]))
1901 XSETSTRING (args
[n
], XSYMBOL (args
[n
])->name
);
1904 else if (STRINGP (args
[n
]))
1907 if (*format
!= 's' && *format
!= 'S')
1908 error ("format specifier doesn't match argument type");
1909 total
+= XSTRING (args
[n
])->size
;
1910 /* We have to put an arbitrary limit on minlen
1911 since otherwise it could make alloca fail. */
1912 if (minlen
< XSTRING (args
[n
])->size
+ 1000)
1915 /* Would get MPV otherwise, since Lisp_Int's `point' to low memory. */
1916 else if (INTEGERP (args
[n
]) && *format
!= 's')
1918 #ifdef LISP_FLOAT_TYPE
1919 /* The following loop assumes the Lisp type indicates
1920 the proper way to pass the argument.
1921 So make sure we have a flonum if the argument should
1923 if (*format
== 'e' || *format
== 'f' || *format
== 'g')
1924 args
[n
] = Ffloat (args
[n
]);
1927 /* We have to put an arbitrary limit on minlen
1928 since otherwise it could make alloca fail. */
1932 #ifdef LISP_FLOAT_TYPE
1933 else if (FLOATP (args
[n
]) && *format
!= 's')
1935 if (! (*format
== 'e' || *format
== 'f' || *format
== 'g'))
1936 args
[n
] = Ftruncate (args
[n
]);
1938 /* We have to put an arbitrary limit on minlen
1939 since otherwise it could make alloca fail. */
1946 /* Anything but a string, convert to a string using princ. */
1947 register Lisp_Object tem
;
1948 tem
= Fprin1_to_string (args
[n
], Qt
);
1955 register int nstrings
= n
+ 1;
1957 /* Allocate twice as many strings as we have %-escapes; floats occupy
1958 two slots, and we're not sure how many of those we have. */
1959 register unsigned char **strings
1960 = (unsigned char **) alloca (2 * nstrings
* sizeof (unsigned char *));
1964 for (n
= 0; n
< nstrings
; n
++)
1967 strings
[i
++] = (unsigned char *) "";
1968 else if (INTEGERP (args
[n
]))
1969 /* We checked above that the corresponding format effector
1970 isn't %s, which would cause MPV. */
1971 strings
[i
++] = (unsigned char *) XINT (args
[n
]);
1972 #ifdef LISP_FLOAT_TYPE
1973 else if (FLOATP (args
[n
]))
1975 union { double d
; char *half
[2]; } u
;
1977 u
.d
= XFLOAT (args
[n
])->data
;
1978 strings
[i
++] = (unsigned char *) u
.half
[0];
1979 strings
[i
++] = (unsigned char *) u
.half
[1];
1983 /* The first string is treated differently
1984 because it is the format string. */
1985 strings
[i
++] = XSTRING (args
[n
])->data
;
1987 strings
[i
++] = (unsigned char *) XFASTINT (args
[n
]);
1990 /* Make room in result for all the non-%-codes in the control string. */
1991 total
+= XSTRING (args
[0])->size
;
1993 /* Format it in bigger and bigger buf's until it all fits. */
1996 buf
= (char *) alloca (total
+ 1);
1999 length
= doprnt_lisp (buf
, total
+ 1, strings
[0],
2000 end
, i
-1, strings
+ 1);
2001 if (buf
[total
- 1] == 0)
2009 return make_string (buf
, length
);
2015 format1 (string1
, arg0
, arg1
, arg2
, arg3
, arg4
)
2016 EMACS_INT arg0
, arg1
, arg2
, arg3
, arg4
;
2030 doprnt (buf
, sizeof buf
, string1
, (char *)0, 5, args
);
2032 doprnt (buf
, sizeof buf
, string1
, (char *)0, 5, &string1
+ 1);
2034 return build_string (buf
);
2037 DEFUN ("char-equal", Fchar_equal
, Schar_equal
, 2, 2, 0,
2038 "Return t if two characters match, optionally ignoring case.\n\
2039 Both arguments must be characters (i.e. integers).\n\
2040 Case is ignored if `case-fold-search' is non-nil in the current buffer.")
2042 register Lisp_Object c1
, c2
;
2044 Lisp_Object
*downcase
= DOWNCASE_TABLE
;
2045 CHECK_NUMBER (c1
, 0);
2046 CHECK_NUMBER (c2
, 1);
2048 if (!NILP (current_buffer
->case_fold_search
)
2049 ? ((XINT (downcase
[0xff & XFASTINT (c1
)])
2050 == XINT (downcase
[0xff & XFASTINT (c2
)]))
2051 && (XFASTINT (c1
) & ~0xff) == (XFASTINT (c2
) & ~0xff))
2052 : XINT (c1
) == XINT (c2
))
2057 /* Transpose the markers in two regions of the current buffer, and
2058 adjust the ones between them if necessary (i.e.: if the regions
2061 Traverses the entire marker list of the buffer to do so, adding an
2062 appropriate amount to some, subtracting from some, and leaving the
2063 rest untouched. Most of this is copied from adjust_markers in insdel.c.
2065 It's the caller's job to see that (start1 <= end1 <= start2 <= end2). */
2068 transpose_markers (start1
, end1
, start2
, end2
)
2069 register int start1
, end1
, start2
, end2
;
2071 register int amt1
, amt2
, diff
, mpos
;
2072 register Lisp_Object marker
;
2074 /* Update point as if it were a marker. */
2078 TEMP_SET_PT (PT
+ (end2
- end1
));
2079 else if (PT
< start2
)
2080 TEMP_SET_PT (PT
+ (end2
- start2
) - (end1
- start1
));
2082 TEMP_SET_PT (PT
- (start2
- start1
));
2084 /* We used to adjust the endpoints here to account for the gap, but that
2085 isn't good enough. Even if we assume the caller has tried to move the
2086 gap out of our way, it might still be at start1 exactly, for example;
2087 and that places it `inside' the interval, for our purposes. The amount
2088 of adjustment is nontrivial if there's a `denormalized' marker whose
2089 position is between GPT and GPT + GAP_SIZE, so it's simpler to leave
2090 the dirty work to Fmarker_position, below. */
2092 /* The difference between the region's lengths */
2093 diff
= (end2
- start2
) - (end1
- start1
);
2095 /* For shifting each marker in a region by the length of the other
2096 * region plus the distance between the regions.
2098 amt1
= (end2
- start2
) + (start2
- end1
);
2099 amt2
= (end1
- start1
) + (start2
- end1
);
2101 for (marker
= BUF_MARKERS (current_buffer
); !NILP (marker
);
2102 marker
= XMARKER (marker
)->chain
)
2104 mpos
= Fmarker_position (marker
);
2105 if (mpos
>= start1
&& mpos
< end2
)
2109 else if (mpos
< start2
)
2113 if (mpos
> GPT
) mpos
+= GAP_SIZE
;
2114 XMARKER (marker
)->bufpos
= mpos
;
2119 DEFUN ("transpose-regions", Ftranspose_regions
, Stranspose_regions
, 4, 5, 0,
2120 "Transpose region START1 to END1 with START2 to END2.\n\
2121 The regions may not be overlapping, because the size of the buffer is\n\
2122 never changed in a transposition.\n\
2124 Optional fifth arg LEAVE_MARKERS, if non-nil, means don't transpose\n\
2125 any markers that happen to be located in the regions.\n\
2127 Transposing beyond buffer boundaries is an error.")
2128 (startr1
, endr1
, startr2
, endr2
, leave_markers
)
2129 Lisp_Object startr1
, endr1
, startr2
, endr2
, leave_markers
;
2131 register int start1
, end1
, start2
, end2
,
2132 gap
, len1
, len_mid
, len2
;
2133 unsigned char *start1_addr
, *start2_addr
, *temp
;
2135 #ifdef USE_TEXT_PROPERTIES
2136 INTERVAL cur_intv
, tmp_interval1
, tmp_interval_mid
, tmp_interval2
;
2137 cur_intv
= BUF_INTERVALS (current_buffer
);
2138 #endif /* USE_TEXT_PROPERTIES */
2140 validate_region (&startr1
, &endr1
);
2141 validate_region (&startr2
, &endr2
);
2143 start1
= XFASTINT (startr1
);
2144 end1
= XFASTINT (endr1
);
2145 start2
= XFASTINT (startr2
);
2146 end2
= XFASTINT (endr2
);
2149 /* Swap the regions if they're reversed. */
2152 register int glumph
= start1
;
2160 len1
= end1
- start1
;
2161 len2
= end2
- start2
;
2164 error ("transposed regions not properly ordered");
2165 else if (start1
== end1
|| start2
== end2
)
2166 error ("transposed region may not be of length 0");
2168 /* The possibilities are:
2169 1. Adjacent (contiguous) regions, or separate but equal regions
2170 (no, really equal, in this case!), or
2171 2. Separate regions of unequal size.
2173 The worst case is usually No. 2. It means that (aside from
2174 potential need for getting the gap out of the way), there also
2175 needs to be a shifting of the text between the two regions. So
2176 if they are spread far apart, we are that much slower... sigh. */
2178 /* It must be pointed out that the really studly thing to do would
2179 be not to move the gap at all, but to leave it in place and work
2180 around it if necessary. This would be extremely efficient,
2181 especially considering that people are likely to do
2182 transpositions near where they are working interactively, which
2183 is exactly where the gap would be found. However, such code
2184 would be much harder to write and to read. So, if you are
2185 reading this comment and are feeling squirrely, by all means have
2186 a go! I just didn't feel like doing it, so I will simply move
2187 the gap the minimum distance to get it out of the way, and then
2188 deal with an unbroken array. */
2190 /* Make sure the gap won't interfere, by moving it out of the text
2191 we will operate on. */
2192 if (start1
< gap
&& gap
< end2
)
2194 if (gap
- start1
< end2
- gap
)
2200 /* Hmmm... how about checking to see if the gap is large
2201 enough to use as the temporary storage? That would avoid an
2202 allocation... interesting. Later, don't fool with it now. */
2204 /* Working without memmove, for portability (sigh), so must be
2205 careful of overlapping subsections of the array... */
2207 if (end1
== start2
) /* adjacent regions */
2209 modify_region (current_buffer
, start1
, end2
);
2210 record_change (start1
, len1
+ len2
);
2212 #ifdef USE_TEXT_PROPERTIES
2213 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
2214 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
2215 Fset_text_properties (start1
, end2
, Qnil
, Qnil
);
2216 #endif /* USE_TEXT_PROPERTIES */
2218 /* First region smaller than second. */
2221 /* We use alloca only if it is small,
2222 because we want to avoid stack overflow. */
2224 temp
= (unsigned char *) xmalloc (len2
);
2226 temp
= (unsigned char *) alloca (len2
);
2228 /* Don't precompute these addresses. We have to compute them
2229 at the last minute, because the relocating allocator might
2230 have moved the buffer around during the xmalloc. */
2231 start1_addr
= BUF_CHAR_ADDRESS (current_buffer
, start1
);
2232 start2_addr
= BUF_CHAR_ADDRESS (current_buffer
, start2
);
2234 bcopy (start2_addr
, temp
, len2
);
2235 bcopy (start1_addr
, start1_addr
+ len2
, len1
);
2236 bcopy (temp
, start1_addr
, len2
);
2241 /* First region not smaller than second. */
2244 temp
= (unsigned char *) xmalloc (len1
);
2246 temp
= (unsigned char *) alloca (len1
);
2247 start1_addr
= BUF_CHAR_ADDRESS (current_buffer
, start1
);
2248 start2_addr
= BUF_CHAR_ADDRESS (current_buffer
, start2
);
2249 bcopy (start1_addr
, temp
, len1
);
2250 bcopy (start2_addr
, start1_addr
, len2
);
2251 bcopy (temp
, start1_addr
+ len2
, len1
);
2255 #ifdef USE_TEXT_PROPERTIES
2256 graft_intervals_into_buffer (tmp_interval1
, start1
+ len2
,
2257 len1
, current_buffer
, 0);
2258 graft_intervals_into_buffer (tmp_interval2
, start1
,
2259 len2
, current_buffer
, 0);
2260 #endif /* USE_TEXT_PROPERTIES */
2262 /* Non-adjacent regions, because end1 != start2, bleagh... */
2266 /* Regions are same size, though, how nice. */
2268 modify_region (current_buffer
, start1
, end1
);
2269 modify_region (current_buffer
, start2
, end2
);
2270 record_change (start1
, len1
);
2271 record_change (start2
, len2
);
2272 #ifdef USE_TEXT_PROPERTIES
2273 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
2274 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
2275 Fset_text_properties (start1
, end1
, Qnil
, Qnil
);
2276 Fset_text_properties (start2
, end2
, Qnil
, Qnil
);
2277 #endif /* USE_TEXT_PROPERTIES */
2280 temp
= (unsigned char *) xmalloc (len1
);
2282 temp
= (unsigned char *) alloca (len1
);
2283 start1_addr
= BUF_CHAR_ADDRESS (current_buffer
, start1
);
2284 start2_addr
= BUF_CHAR_ADDRESS (current_buffer
, start2
);
2285 bcopy (start1_addr
, temp
, len1
);
2286 bcopy (start2_addr
, start1_addr
, len2
);
2287 bcopy (temp
, start2_addr
, len1
);
2290 #ifdef USE_TEXT_PROPERTIES
2291 graft_intervals_into_buffer (tmp_interval1
, start2
,
2292 len1
, current_buffer
, 0);
2293 graft_intervals_into_buffer (tmp_interval2
, start1
,
2294 len2
, current_buffer
, 0);
2295 #endif /* USE_TEXT_PROPERTIES */
2298 else if (len1
< len2
) /* Second region larger than first */
2299 /* Non-adjacent & unequal size, area between must also be shifted. */
2301 len_mid
= start2
- end1
;
2302 modify_region (current_buffer
, start1
, end2
);
2303 record_change (start1
, (end2
- start1
));
2304 #ifdef USE_TEXT_PROPERTIES
2305 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
2306 tmp_interval_mid
= copy_intervals (cur_intv
, end1
, len_mid
);
2307 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
2308 Fset_text_properties (start1
, end2
, Qnil
, Qnil
);
2309 #endif /* USE_TEXT_PROPERTIES */
2311 /* holds region 2 */
2313 temp
= (unsigned char *) xmalloc (len2
);
2315 temp
= (unsigned char *) alloca (len2
);
2316 start1_addr
= BUF_CHAR_ADDRESS (current_buffer
, start1
);
2317 start2_addr
= BUF_CHAR_ADDRESS (current_buffer
, start2
);
2318 bcopy (start2_addr
, temp
, len2
);
2319 bcopy (start1_addr
, start1_addr
+ len_mid
+ len2
, len1
);
2320 safe_bcopy (start1_addr
+ len1
, start1_addr
+ len2
, len_mid
);
2321 bcopy (temp
, start1_addr
, len2
);
2324 #ifdef USE_TEXT_PROPERTIES
2325 graft_intervals_into_buffer (tmp_interval1
, end2
- len1
,
2326 len1
, current_buffer
, 0);
2327 graft_intervals_into_buffer (tmp_interval_mid
, start1
+ len2
,
2328 len_mid
, current_buffer
, 0);
2329 graft_intervals_into_buffer (tmp_interval2
, start1
,
2330 len2
, current_buffer
, 0);
2331 #endif /* USE_TEXT_PROPERTIES */
2334 /* Second region smaller than first. */
2336 len_mid
= start2
- end1
;
2337 record_change (start1
, (end2
- start1
));
2338 modify_region (current_buffer
, start1
, end2
);
2340 #ifdef USE_TEXT_PROPERTIES
2341 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
2342 tmp_interval_mid
= copy_intervals (cur_intv
, end1
, len_mid
);
2343 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
2344 Fset_text_properties (start1
, end2
, Qnil
, Qnil
);
2345 #endif /* USE_TEXT_PROPERTIES */
2347 /* holds region 1 */
2349 temp
= (unsigned char *) xmalloc (len1
);
2351 temp
= (unsigned char *) alloca (len1
);
2352 start1_addr
= BUF_CHAR_ADDRESS (current_buffer
, start1
);
2353 start2_addr
= BUF_CHAR_ADDRESS (current_buffer
, start2
);
2354 bcopy (start1_addr
, temp
, len1
);
2355 bcopy (start2_addr
, start1_addr
, len2
);
2356 bcopy (start1_addr
+ len1
, start1_addr
+ len2
, len_mid
);
2357 bcopy (temp
, start1_addr
+ len2
+ len_mid
, len1
);
2360 #ifdef USE_TEXT_PROPERTIES
2361 graft_intervals_into_buffer (tmp_interval1
, end2
- len1
,
2362 len1
, current_buffer
, 0);
2363 graft_intervals_into_buffer (tmp_interval_mid
, start1
+ len2
,
2364 len_mid
, current_buffer
, 0);
2365 graft_intervals_into_buffer (tmp_interval2
, start1
,
2366 len2
, current_buffer
, 0);
2367 #endif /* USE_TEXT_PROPERTIES */
2371 /* todo: this will be slow, because for every transposition, we
2372 traverse the whole friggin marker list. Possible solutions:
2373 somehow get a list of *all* the markers across multiple
2374 transpositions and do it all in one swell phoop. Or maybe modify
2375 Emacs' marker code to keep an ordered list or tree. This might
2376 be nicer, and more beneficial in the long run, but would be a
2377 bunch of work. Plus the way they're arranged now is nice. */
2378 if (NILP (leave_markers
))
2380 transpose_markers (start1
, end1
, start2
, end2
);
2381 fix_overlays_in_range (start1
, end2
);
2393 Qbuffer_access_fontify_functions
2394 = intern ("buffer-access-fontify-functions");
2395 staticpro (&Qbuffer_access_fontify_functions
);
2397 DEFVAR_LISP ("buffer-access-fontify-functions",
2398 &Vbuffer_access_fontify_functions
,
2399 "List of functions called by `buffer-substring' to fontify if necessary.\n\
2400 Each function is called with two arguments which specify the range\n\
2401 of the buffer being accessed.");
2402 Vbuffer_access_fontify_functions
= Qnil
;
2406 extern Lisp_Object Vprin1_to_string_buffer
;
2407 obuf
= Fcurrent_buffer ();
2408 /* Do this here, because init_buffer_once is too early--it won't work. */
2409 Fset_buffer (Vprin1_to_string_buffer
);
2410 /* Make sure buffer-access-fontify-functions is nil in this buffer. */
2411 Fset (Fmake_local_variable (intern ("buffer-access-fontify-functions")),
2416 DEFVAR_LISP ("buffer-access-fontified-property",
2417 &Vbuffer_access_fontified_property
,
2418 "Property which (if non-nil) indicates text has been fontified.\n\
2419 `buffer-substring' need not call the `buffer-access-fontify-functions'\n\
2420 functions if all the text being accessed has this property.");
2421 Vbuffer_access_fontified_property
= Qnil
;
2423 DEFVAR_LISP ("system-name", &Vsystem_name
,
2424 "The name of the machine Emacs is running on.");
2426 DEFVAR_LISP ("user-full-name", &Vuser_full_name
,
2427 "The full name of the user logged in.");
2429 DEFVAR_LISP ("user-login-name", &Vuser_login_name
,
2430 "The user's name, taken from environment variables if possible.");
2432 DEFVAR_LISP ("user-real-login-name", &Vuser_real_login_name
,
2433 "The user's name, based upon the real uid only.");
2435 defsubr (&Schar_equal
);
2436 defsubr (&Sgoto_char
);
2437 defsubr (&Sstring_to_char
);
2438 defsubr (&Schar_to_string
);
2439 defsubr (&Sbuffer_substring
);
2440 defsubr (&Sbuffer_substring_no_properties
);
2441 defsubr (&Sbuffer_string
);
2443 defsubr (&Spoint_marker
);
2444 defsubr (&Smark_marker
);
2446 defsubr (&Sregion_beginning
);
2447 defsubr (&Sregion_end
);
2448 /* defsubr (&Smark); */
2449 /* defsubr (&Sset_mark); */
2450 defsubr (&Ssave_excursion
);
2452 defsubr (&Sbufsize
);
2453 defsubr (&Spoint_max
);
2454 defsubr (&Spoint_min
);
2455 defsubr (&Spoint_min_marker
);
2456 defsubr (&Spoint_max_marker
);
2462 defsubr (&Sfollowing_char
);
2463 defsubr (&Sprevious_char
);
2464 defsubr (&Schar_after
);
2466 defsubr (&Sinsert_before_markers
);
2467 defsubr (&Sinsert_and_inherit
);
2468 defsubr (&Sinsert_and_inherit_before_markers
);
2469 defsubr (&Sinsert_char
);
2471 defsubr (&Suser_login_name
);
2472 defsubr (&Suser_real_login_name
);
2473 defsubr (&Suser_uid
);
2474 defsubr (&Suser_real_uid
);
2475 defsubr (&Suser_full_name
);
2476 defsubr (&Semacs_pid
);
2477 defsubr (&Scurrent_time
);
2478 defsubr (&Sformat_time_string
);
2479 defsubr (&Sdecode_time
);
2480 defsubr (&Sencode_time
);
2481 defsubr (&Scurrent_time_string
);
2482 defsubr (&Scurrent_time_zone
);
2483 defsubr (&Sset_time_zone_rule
);
2484 defsubr (&Ssystem_name
);
2485 defsubr (&Smessage
);
2486 defsubr (&Smessage_box
);
2487 defsubr (&Smessage_or_box
);
2490 defsubr (&Sinsert_buffer_substring
);
2491 defsubr (&Scompare_buffer_substrings
);
2492 defsubr (&Ssubst_char_in_region
);
2493 defsubr (&Stranslate_region
);
2494 defsubr (&Sdelete_region
);
2496 defsubr (&Snarrow_to_region
);
2497 defsubr (&Ssave_restriction
);
2498 defsubr (&Stranspose_regions
);