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 is a synonym for \"%x %X\".\n\
611 %C is a locale-specific synonym, which defaults to \"%A, %B %e, %Y\" in the C locale.\n\
612 %d is replaced by the day of month, zero-padded.\n\
613 %D is a synonym for \"%m/%d/%y\".\n\
614 %e is replaced by the day of month, blank-padded.\n\
615 %h is a synonym for \"%b\".\n\
616 %H is replaced by the hour (00-23).\n\
617 %I is replaced by the hour (00-12).\n\
618 %j is replaced by the day of the year (001-366).\n\
619 %k is replaced by the hour (0-23), blank padded.\n\
620 %l is replaced by the hour (1-12), blank padded.\n\
621 %m is replaced by the month (01-12).\n\
622 %M is replaced by the minute (00-59).\n\
623 %n is a synonym for \"\\n\".\n\
624 %p is replaced by AM or PM, as appropriate.\n\
625 %r is a synonym for \"%I:%M:%S %p\".\n\
626 %R is a synonym for \"%H:%M\".\n\
627 %S is replaced by the second (00-60).\n\
628 %t is a synonym for \"\\t\".\n\
629 %T is a synonym for \"%H:%M:%S\".\n\
630 %U is replaced by the week of the year (00-53), first day of week is Sunday.\n\
631 %w is replaced by the day of week (0-6), Sunday is day 0.\n\
632 %W is replaced by the week of the year (00-53), first day of week is Monday.\n\
633 %x is a locale-specific synonym, which defaults to \"%D\" in the C locale.\n\
634 %X is a locale-specific synonym, which defaults to \"%T\" in the C locale.\n\
635 %y is replaced by the year without century (00-99).\n\
636 %Y is replaced by the year with century.\n\
637 %Z is replaced by the time zone abbreviation.\n\
639 The number of options reflects the `strftime' function.")
640 (format_string
, time
)
641 Lisp_Object format_string
, time
;
646 CHECK_STRING (format_string
, 1);
648 if (! lisp_time_argument (time
, &value
))
649 error ("Invalid time specification");
651 /* This is probably enough. */
652 size
= XSTRING (format_string
)->size
* 6 + 50;
656 char *buf
= (char *) alloca (size
);
658 if (emacs_strftime (buf
, size
, XSTRING (format_string
)->data
,
661 return build_string (buf
);
662 /* If buffer was too small, make it bigger. */
667 DEFUN ("decode-time", Fdecode_time
, Sdecode_time
, 0, 1, 0,
668 "Decode a time value as (SEC MINUTE HOUR DAY MONTH YEAR DOW DST ZONE).\n\
669 The optional SPECIFIED-TIME should be a list of (HIGH LOW . IGNORED)\n\
670 or (HIGH . LOW), as from `current-time' and `file-attributes', or `nil'\n\
671 to use the current time. The list has the following nine members:\n\
672 SEC is an integer between 0 and 60; SEC is 60 for a leap second, which\n\
673 only some operating systems support. MINUTE is an integer between 0 and 59.\n\
674 HOUR is an integer between 0 and 23. DAY is an integer between 1 and 31.\n\
675 MONTH is an integer between 1 and 12. YEAR is an integer indicating the\n\
676 four-digit year. DOW is the day of week, an integer between 0 and 6, where\n\
677 0 is Sunday. DST is t if daylight savings time is effect, otherwise nil.\n\
678 ZONE is an integer indicating the number of seconds east of Greenwich.\n\
679 \(Note that Common Lisp has different meanings for DOW and ZONE.)")
681 Lisp_Object specified_time
;
685 struct tm
*decoded_time
;
686 Lisp_Object list_args
[9];
688 if (! lisp_time_argument (specified_time
, &time_spec
))
689 error ("Invalid time specification");
691 decoded_time
= localtime (&time_spec
);
692 XSETFASTINT (list_args
[0], decoded_time
->tm_sec
);
693 XSETFASTINT (list_args
[1], decoded_time
->tm_min
);
694 XSETFASTINT (list_args
[2], decoded_time
->tm_hour
);
695 XSETFASTINT (list_args
[3], decoded_time
->tm_mday
);
696 XSETFASTINT (list_args
[4], decoded_time
->tm_mon
+ 1);
697 XSETFASTINT (list_args
[5], decoded_time
->tm_year
+ 1900);
698 XSETFASTINT (list_args
[6], decoded_time
->tm_wday
);
699 list_args
[7] = (decoded_time
->tm_isdst
)? Qt
: Qnil
;
701 /* Make a copy, in case gmtime modifies the struct. */
702 save_tm
= *decoded_time
;
703 decoded_time
= gmtime (&time_spec
);
704 if (decoded_time
== 0)
707 XSETINT (list_args
[8], difftm (&save_tm
, decoded_time
));
708 return Flist (9, list_args
);
711 DEFUN ("encode-time", Fencode_time
, Sencode_time
, 6, MANY
, 0,
712 "Convert SECOND, MINUTE, HOUR, DAY, MONTH, YEAR and ZONE to internal time.\n\
713 This is the reverse operation of `decode-time', which see.\n\
714 ZONE defaults to the current time zone rule. This can\n\
715 be a string (as from `set-time-zone-rule'), or it can be a list\n\
716 (as from `current-time-zone') or an integer (as from `decode-time')\n\
717 applied without consideration for daylight savings time.\n\
719 You can pass more than 7 arguments; then the first six arguments\n\
720 are used as SECOND through YEAR, and the *last* argument is used as ZONE.\n\
721 The intervening arguments are ignored.\n\
722 This feature lets (apply 'encode-time (decode-time ...)) work.\n\
724 Out-of-range values for SEC, MINUTE, HOUR, DAY, or MONTH are allowed;\n\
725 for example, a DAY of 0 means the day preceding the given month.\n\
726 Year numbers less than 100 are treated just like other year numbers.\n\
727 If you want them to stand for years in this century, you must do that yourself.")
730 register Lisp_Object
*args
;
734 Lisp_Object zone
= (nargs
> 6)? args
[nargs
- 1] : Qnil
;
736 CHECK_NUMBER (args
[0], 0); /* second */
737 CHECK_NUMBER (args
[1], 1); /* minute */
738 CHECK_NUMBER (args
[2], 2); /* hour */
739 CHECK_NUMBER (args
[3], 3); /* day */
740 CHECK_NUMBER (args
[4], 4); /* month */
741 CHECK_NUMBER (args
[5], 5); /* year */
743 tm
.tm_sec
= XINT (args
[0]);
744 tm
.tm_min
= XINT (args
[1]);
745 tm
.tm_hour
= XINT (args
[2]);
746 tm
.tm_mday
= XINT (args
[3]);
747 tm
.tm_mon
= XINT (args
[4]) - 1;
748 tm
.tm_year
= XINT (args
[5]) - 1900;
759 char **oldenv
= environ
, **newenv
;
762 tzstring
= (char *) XSTRING (zone
)->data
;
763 else if (INTEGERP (zone
))
765 int abszone
= abs (XINT (zone
));
766 sprintf (tzbuf
, "XXX%s%d:%02d:%02d", "-" + (XINT (zone
) < 0),
767 abszone
/ (60*60), (abszone
/60) % 60, abszone
% 60);
771 error ("Invalid time zone specification");
773 /* Set TZ before calling mktime; merely adjusting mktime's returned
774 value doesn't suffice, since that would mishandle leap seconds. */
775 set_time_zone_rule (tzstring
);
779 /* Restore TZ to previous value. */
783 #ifdef LOCALTIME_CACHE
788 if (time
== (time_t) -1)
789 error ("Specified time is not representable");
791 return make_time (time
);
794 DEFUN ("current-time-string", Fcurrent_time_string
, Scurrent_time_string
, 0, 1, 0,
795 "Return the current time, as a human-readable string.\n\
796 Programs can use this function to decode a time,\n\
797 since the number of columns in each field is fixed.\n\
798 The format is `Sun Sep 16 01:03:52 1973'.\n\
799 If an argument is given, it specifies a time to format\n\
800 instead of the current time. The argument should have the form:\n\
803 (HIGH LOW . IGNORED).\n\
804 Thus, you can use times obtained from `current-time'\n\
805 and from `file-attributes'.")
807 Lisp_Object specified_time
;
813 if (! lisp_time_argument (specified_time
, &value
))
815 tem
= (char *) ctime (&value
);
817 strncpy (buf
, tem
, 24);
820 return build_string (buf
);
823 #define TM_YEAR_ORIGIN 1900
825 /* Yield A - B, measured in seconds. */
830 int ay
= a
->tm_year
+ (TM_YEAR_ORIGIN
- 1);
831 int by
= b
->tm_year
+ (TM_YEAR_ORIGIN
- 1);
832 /* Some compilers can't handle this as a single return statement. */
834 /* difference in day of year */
835 a
->tm_yday
- b
->tm_yday
836 /* + intervening leap days */
837 + ((ay
>> 2) - (by
>> 2))
839 + ((ay
/100 >> 2) - (by
/100 >> 2))
840 /* + difference in years * 365 */
841 + (long)(ay
-by
) * 365
843 return (60*(60*(24*days
+ (a
->tm_hour
- b
->tm_hour
))
844 + (a
->tm_min
- b
->tm_min
))
845 + (a
->tm_sec
- b
->tm_sec
));
848 DEFUN ("current-time-zone", Fcurrent_time_zone
, Scurrent_time_zone
, 0, 1, 0,
849 "Return the offset and name for the local time zone.\n\
850 This returns a list of the form (OFFSET NAME).\n\
851 OFFSET is an integer number of seconds ahead of UTC (east of Greenwich).\n\
852 A negative value means west of Greenwich.\n\
853 NAME is a string giving the name of the time zone.\n\
854 If an argument is given, it specifies when the time zone offset is determined\n\
855 instead of using the current time. The argument should have the form:\n\
858 (HIGH LOW . IGNORED).\n\
859 Thus, you can use times obtained from `current-time'\n\
860 and from `file-attributes'.\n\
862 Some operating systems cannot provide all this information to Emacs;\n\
863 in this case, `current-time-zone' returns a list containing nil for\n\
864 the data it can't find.")
866 Lisp_Object specified_time
;
871 if (lisp_time_argument (specified_time
, &value
)
872 && (t
= gmtime (&value
)) != 0)
878 gmt
= *t
; /* Make a copy, in case localtime modifies *t. */
879 t
= localtime (&value
);
880 offset
= difftm (t
, &gmt
);
884 s
= (char *)t
->tm_zone
;
885 #else /* not HAVE_TM_ZONE */
887 if (t
->tm_isdst
== 0 || t
->tm_isdst
== 1)
888 s
= tzname
[t
->tm_isdst
];
890 #endif /* not HAVE_TM_ZONE */
893 /* No local time zone name is available; use "+-NNNN" instead. */
894 int am
= (offset
< 0 ? -offset
: offset
) / 60;
895 sprintf (buf
, "%c%02d%02d", (offset
< 0 ? '-' : '+'), am
/60, am
%60);
898 return Fcons (make_number (offset
), Fcons (build_string (s
), Qnil
));
901 return Fmake_list (2, Qnil
);
904 /* This holds the value of `environ' produced by the previous
905 call to Fset_time_zone_rule, or 0 if Fset_time_zone_rule
906 has never been called. */
907 static char **environbuf
;
909 DEFUN ("set-time-zone-rule", Fset_time_zone_rule
, Sset_time_zone_rule
, 1, 1, 0,
910 "Set the local time zone using TZ, a string specifying a time zone rule.\n\
911 If TZ is nil, use implementation-defined default time zone information.")
921 CHECK_STRING (tz
, 0);
922 tzstring
= (char *) XSTRING (tz
)->data
;
925 set_time_zone_rule (tzstring
);
928 environbuf
= environ
;
933 /* Set the local time zone rule to TZSTRING.
934 This allocates memory into `environ', which it is the caller's
935 responsibility to free. */
937 set_time_zone_rule (tzstring
)
941 char **from
, **to
, **newenv
;
943 for (from
= environ
; *from
; from
++)
945 envptrs
= from
- environ
+ 2;
946 newenv
= to
= (char **) xmalloc (envptrs
* sizeof (char *)
947 + (tzstring
? strlen (tzstring
) + 4 : 0));
950 char *t
= (char *) (to
+ envptrs
);
952 strcat (t
, tzstring
);
956 for (from
= environ
; *from
; from
++)
957 if (strncmp (*from
, "TZ=", 3) != 0)
963 #ifdef LOCALTIME_CACHE
976 /* Callers passing one argument to Finsert need not gcpro the
977 argument "array", since the only element of the array will
978 not be used after calling insert or insert_from_string, so
979 we don't care if it gets trashed. */
981 DEFUN ("insert", Finsert
, Sinsert
, 0, MANY
, 0,
982 "Insert the arguments, either strings or characters, at point.\n\
983 Point moves forward so that it ends up after the inserted text.\n\
984 Any other markers at the point of insertion remain before the text.")
987 register Lisp_Object
*args
;
990 register Lisp_Object tem
;
993 for (argnum
= 0; argnum
< nargs
; argnum
++)
1002 else if (STRINGP (tem
))
1004 insert_from_string (tem
, 0, XSTRING (tem
)->size
, 0);
1008 tem
= wrong_type_argument (Qchar_or_string_p
, tem
);
1016 DEFUN ("insert-and-inherit", Finsert_and_inherit
, Sinsert_and_inherit
,
1018 "Insert the arguments at point, inheriting properties from adjoining text.\n\
1019 Point moves forward so that it ends up after the inserted text.\n\
1020 Any other markers at the point of insertion remain before the text.")
1023 register Lisp_Object
*args
;
1025 register int argnum
;
1026 register Lisp_Object tem
;
1029 for (argnum
= 0; argnum
< nargs
; argnum
++)
1035 str
[0] = XINT (tem
);
1036 insert_and_inherit (str
, 1);
1038 else if (STRINGP (tem
))
1040 insert_from_string (tem
, 0, XSTRING (tem
)->size
, 1);
1044 tem
= wrong_type_argument (Qchar_or_string_p
, tem
);
1052 DEFUN ("insert-before-markers", Finsert_before_markers
, Sinsert_before_markers
, 0, MANY
, 0,
1053 "Insert strings or characters at point, relocating markers after the text.\n\
1054 Point moves forward so that it ends up after the inserted text.\n\
1055 Any other markers at the point of insertion also end up after the text.")
1058 register Lisp_Object
*args
;
1060 register int argnum
;
1061 register Lisp_Object tem
;
1064 for (argnum
= 0; argnum
< nargs
; argnum
++)
1070 str
[0] = XINT (tem
);
1071 insert_before_markers (str
, 1);
1073 else if (STRINGP (tem
))
1075 insert_from_string_before_markers (tem
, 0, XSTRING (tem
)->size
, 0);
1079 tem
= wrong_type_argument (Qchar_or_string_p
, tem
);
1087 DEFUN ("insert-before-markers-and-inherit",
1088 Finsert_and_inherit_before_markers
, Sinsert_and_inherit_before_markers
,
1090 "Insert text at point, relocating markers and inheriting properties.\n\
1091 Point moves forward so that it ends up after the inserted text.\n\
1092 Any other markers at the point of insertion also end up after the text.")
1095 register Lisp_Object
*args
;
1097 register int argnum
;
1098 register Lisp_Object tem
;
1101 for (argnum
= 0; argnum
< nargs
; argnum
++)
1107 str
[0] = XINT (tem
);
1108 insert_before_markers_and_inherit (str
, 1);
1110 else if (STRINGP (tem
))
1112 insert_from_string_before_markers (tem
, 0, XSTRING (tem
)->size
, 1);
1116 tem
= wrong_type_argument (Qchar_or_string_p
, tem
);
1124 DEFUN ("insert-char", Finsert_char
, Sinsert_char
, 2, 3, 0,
1125 "Insert COUNT (second arg) copies of CHARACTER (first arg).\n\
1126 Point and all markers are affected as in the function `insert'.\n\
1127 Both arguments are required.\n\
1128 The optional third arg INHERIT, if non-nil, says to inherit text properties\n\
1129 from adjoining text, if those properties are sticky.")
1130 (character
, count
, inherit
)
1131 Lisp_Object character
, count
, inherit
;
1133 register unsigned char *string
;
1134 register int strlen
;
1137 CHECK_NUMBER (character
, 0);
1138 CHECK_NUMBER (count
, 1);
1143 strlen
= min (n
, 256);
1144 string
= (unsigned char *) alloca (strlen
);
1145 for (i
= 0; i
< strlen
; i
++)
1146 string
[i
] = XFASTINT (character
);
1149 if (!NILP (inherit
))
1150 insert_and_inherit (string
, strlen
);
1152 insert (string
, strlen
);
1157 if (!NILP (inherit
))
1158 insert_and_inherit (string
, n
);
1166 /* Making strings from buffer contents. */
1168 /* Return a Lisp_String containing the text of the current buffer from
1169 START to END. If text properties are in use and the current buffer
1170 has properties in the range specified, the resulting string will also
1171 have them, if PROPS is nonzero.
1173 We don't want to use plain old make_string here, because it calls
1174 make_uninit_string, which can cause the buffer arena to be
1175 compacted. make_string has no way of knowing that the data has
1176 been moved, and thus copies the wrong data into the string. This
1177 doesn't effect most of the other users of make_string, so it should
1178 be left as is. But we should use this function when conjuring
1179 buffer substrings. */
1182 make_buffer_string (start
, end
, props
)
1186 Lisp_Object result
, tem
, tem1
;
1188 if (start
< GPT
&& GPT
< end
)
1191 result
= make_uninit_string (end
- start
);
1192 bcopy (&FETCH_CHAR (start
), XSTRING (result
)->data
, end
- start
);
1194 /* If desired, update and copy the text properties. */
1195 #ifdef USE_TEXT_PROPERTIES
1198 update_buffer_properties (start
, end
);
1200 tem
= Fnext_property_change (make_number (start
), Qnil
, make_number (end
));
1201 tem1
= Ftext_properties_at (make_number (start
), Qnil
);
1203 if (XINT (tem
) != end
|| !NILP (tem1
))
1204 copy_intervals_to_string (result
, current_buffer
, start
, end
- start
);
1211 /* Call Vbuffer_access_fontify_functions for the range START ... END
1212 in the current buffer, if necessary. */
1215 update_buffer_properties (start
, end
)
1218 #ifdef USE_TEXT_PROPERTIES
1219 /* If this buffer has some access functions,
1220 call them, specifying the range of the buffer being accessed. */
1221 if (!NILP (Vbuffer_access_fontify_functions
))
1223 Lisp_Object args
[3];
1226 args
[0] = Qbuffer_access_fontify_functions
;
1227 XSETINT (args
[1], start
);
1228 XSETINT (args
[2], end
);
1230 /* But don't call them if we can tell that the work
1231 has already been done. */
1232 if (!NILP (Vbuffer_access_fontified_property
))
1234 tem
= Ftext_property_any (args
[1], args
[2],
1235 Vbuffer_access_fontified_property
,
1238 Frun_hook_with_args (3, args
);
1241 Frun_hook_with_args (3, args
);
1246 DEFUN ("buffer-substring", Fbuffer_substring
, Sbuffer_substring
, 2, 2, 0,
1247 "Return the contents of part of the current buffer as a string.\n\
1248 The two arguments START and END are character positions;\n\
1249 they can be in either order.")
1251 Lisp_Object start
, end
;
1255 validate_region (&start
, &end
);
1259 return make_buffer_string (b
, e
, 1);
1262 DEFUN ("buffer-substring-no-properties", Fbuffer_substring_no_properties
,
1263 Sbuffer_substring_no_properties
, 2, 2, 0,
1264 "Return the characters of part of the buffer, without the text properties.\n\
1265 The two arguments START and END are character positions;\n\
1266 they can be in either order.")
1268 Lisp_Object start
, end
;
1272 validate_region (&start
, &end
);
1276 return make_buffer_string (b
, e
, 0);
1279 DEFUN ("buffer-string", Fbuffer_string
, Sbuffer_string
, 0, 0, 0,
1280 "Return the contents of the current buffer as a string.\n\
1281 If narrowing is in effect, this function returns only the visible part\n\
1285 return make_buffer_string (BEGV
, ZV
, 1);
1288 DEFUN ("insert-buffer-substring", Finsert_buffer_substring
, Sinsert_buffer_substring
,
1290 "Insert before point a substring of the contents of buffer BUFFER.\n\
1291 BUFFER may be a buffer or a buffer name.\n\
1292 Arguments START and END are character numbers specifying the substring.\n\
1293 They default to the beginning and the end of BUFFER.")
1295 Lisp_Object buf
, start
, end
;
1297 register int b
, e
, temp
;
1298 register struct buffer
*bp
, *obuf
;
1301 buffer
= Fget_buffer (buf
);
1304 bp
= XBUFFER (buffer
);
1310 CHECK_NUMBER_COERCE_MARKER (start
, 0);
1317 CHECK_NUMBER_COERCE_MARKER (end
, 1);
1322 temp
= b
, b
= e
, e
= temp
;
1324 if (!(BUF_BEGV (bp
) <= b
&& e
<= BUF_ZV (bp
)))
1325 args_out_of_range (start
, end
);
1327 obuf
= current_buffer
;
1328 set_buffer_internal_1 (bp
);
1329 update_buffer_properties (b
, e
);
1330 set_buffer_internal_1 (obuf
);
1332 insert_from_buffer (bp
, b
, e
- b
, 0);
1336 DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings
, Scompare_buffer_substrings
,
1338 "Compare two substrings of two buffers; return result as number.\n\
1339 the value is -N if first string is less after N-1 chars,\n\
1340 +N if first string is greater after N-1 chars, or 0 if strings match.\n\
1341 Each substring is represented as three arguments: BUFFER, START and END.\n\
1342 That makes six args in all, three for each substring.\n\n\
1343 The value of `case-fold-search' in the current buffer\n\
1344 determines whether case is significant or ignored.")
1345 (buffer1
, start1
, end1
, buffer2
, start2
, end2
)
1346 Lisp_Object buffer1
, start1
, end1
, buffer2
, start2
, end2
;
1348 register int begp1
, endp1
, begp2
, endp2
, temp
, len1
, len2
, length
, i
;
1349 register struct buffer
*bp1
, *bp2
;
1350 register Lisp_Object
*trt
1351 = (!NILP (current_buffer
->case_fold_search
)
1352 ? XCHAR_TABLE (current_buffer
->case_canon_table
)->contents
: 0);
1354 /* Find the first buffer and its substring. */
1357 bp1
= current_buffer
;
1361 buf1
= Fget_buffer (buffer1
);
1364 bp1
= XBUFFER (buf1
);
1368 begp1
= BUF_BEGV (bp1
);
1371 CHECK_NUMBER_COERCE_MARKER (start1
, 1);
1372 begp1
= XINT (start1
);
1375 endp1
= BUF_ZV (bp1
);
1378 CHECK_NUMBER_COERCE_MARKER (end1
, 2);
1379 endp1
= XINT (end1
);
1383 temp
= begp1
, begp1
= endp1
, endp1
= temp
;
1385 if (!(BUF_BEGV (bp1
) <= begp1
1387 && endp1
<= BUF_ZV (bp1
)))
1388 args_out_of_range (start1
, end1
);
1390 /* Likewise for second substring. */
1393 bp2
= current_buffer
;
1397 buf2
= Fget_buffer (buffer2
);
1400 bp2
= XBUFFER (buf2
);
1404 begp2
= BUF_BEGV (bp2
);
1407 CHECK_NUMBER_COERCE_MARKER (start2
, 4);
1408 begp2
= XINT (start2
);
1411 endp2
= BUF_ZV (bp2
);
1414 CHECK_NUMBER_COERCE_MARKER (end2
, 5);
1415 endp2
= XINT (end2
);
1419 temp
= begp2
, begp2
= endp2
, endp2
= temp
;
1421 if (!(BUF_BEGV (bp2
) <= begp2
1423 && endp2
<= BUF_ZV (bp2
)))
1424 args_out_of_range (start2
, end2
);
1426 len1
= endp1
- begp1
;
1427 len2
= endp2
- begp2
;
1432 for (i
= 0; i
< length
; i
++)
1434 int c1
= *BUF_CHAR_ADDRESS (bp1
, begp1
+ i
);
1435 int c2
= *BUF_CHAR_ADDRESS (bp2
, begp2
+ i
);
1442 return make_number (- 1 - i
);
1444 return make_number (i
+ 1);
1447 /* The strings match as far as they go.
1448 If one is shorter, that one is less. */
1450 return make_number (length
+ 1);
1451 else if (length
< len2
)
1452 return make_number (- length
- 1);
1454 /* Same length too => they are equal. */
1455 return make_number (0);
1459 subst_char_in_region_unwind (arg
)
1462 return current_buffer
->undo_list
= arg
;
1466 subst_char_in_region_unwind_1 (arg
)
1469 return current_buffer
->filename
= arg
;
1472 DEFUN ("subst-char-in-region", Fsubst_char_in_region
,
1473 Ssubst_char_in_region
, 4, 5, 0,
1474 "From START to END, replace FROMCHAR with TOCHAR each time it occurs.\n\
1475 If optional arg NOUNDO is non-nil, don't record this change for undo\n\
1476 and don't mark the buffer as really changed.")
1477 (start
, end
, fromchar
, tochar
, noundo
)
1478 Lisp_Object start
, end
, fromchar
, tochar
, noundo
;
1480 register int pos
, stop
, look
;
1482 int count
= specpdl_ptr
- specpdl
;
1484 validate_region (&start
, &end
);
1485 CHECK_NUMBER (fromchar
, 2);
1486 CHECK_NUMBER (tochar
, 3);
1490 look
= XINT (fromchar
);
1492 /* If we don't want undo, turn off putting stuff on the list.
1493 That's faster than getting rid of things,
1494 and it prevents even the entry for a first change.
1495 Also inhibit locking the file. */
1498 record_unwind_protect (subst_char_in_region_unwind
,
1499 current_buffer
->undo_list
);
1500 current_buffer
->undo_list
= Qt
;
1501 /* Don't do file-locking. */
1502 record_unwind_protect (subst_char_in_region_unwind_1
,
1503 current_buffer
->filename
);
1504 current_buffer
->filename
= Qnil
;
1509 if (FETCH_CHAR (pos
) == look
)
1513 modify_region (current_buffer
, XINT (start
), stop
);
1515 if (! NILP (noundo
))
1517 if (MODIFF
- 1 == SAVE_MODIFF
)
1519 if (MODIFF
- 1 == current_buffer
->auto_save_modified
)
1520 current_buffer
->auto_save_modified
++;
1527 record_change (pos
, 1);
1528 FETCH_CHAR (pos
) = XINT (tochar
);
1534 signal_after_change (XINT (start
),
1535 stop
- XINT (start
), stop
- XINT (start
));
1537 unbind_to (count
, Qnil
);
1541 DEFUN ("translate-region", Ftranslate_region
, Stranslate_region
, 3, 3, 0,
1542 "From START to END, translate characters according to TABLE.\n\
1543 TABLE is a string; the Nth character in it is the mapping\n\
1544 for the character with code N. Returns the number of characters changed.")
1548 register Lisp_Object table
;
1550 register int pos
, stop
; /* Limits of the region. */
1551 register unsigned char *tt
; /* Trans table. */
1552 register int oc
; /* Old character. */
1553 register int nc
; /* New character. */
1554 int cnt
; /* Number of changes made. */
1555 Lisp_Object z
; /* Return. */
1556 int size
; /* Size of translate table. */
1558 validate_region (&start
, &end
);
1559 CHECK_STRING (table
, 2);
1561 size
= XSTRING (table
)->size
;
1562 tt
= XSTRING (table
)->data
;
1566 modify_region (current_buffer
, pos
, stop
);
1569 for (; pos
< stop
; ++pos
)
1571 oc
= FETCH_CHAR (pos
);
1577 record_change (pos
, 1);
1578 FETCH_CHAR (pos
) = nc
;
1579 signal_after_change (pos
, 1, 1);
1585 XSETFASTINT (z
, cnt
);
1589 DEFUN ("delete-region", Fdelete_region
, Sdelete_region
, 2, 2, "r",
1590 "Delete the text between point and mark.\n\
1591 When called from a program, expects two arguments,\n\
1592 positions (integers or markers) specifying the stretch to be deleted.")
1594 Lisp_Object start
, end
;
1596 validate_region (&start
, &end
);
1597 del_range (XINT (start
), XINT (end
));
1601 DEFUN ("widen", Fwiden
, Swiden
, 0, 0, "",
1602 "Remove restrictions (narrowing) from current buffer.\n\
1603 This allows the buffer's full text to be seen and edited.")
1607 SET_BUF_ZV (current_buffer
, Z
);
1608 current_buffer
->clip_changed
= 1;
1609 /* Changing the buffer bounds invalidates any recorded current column. */
1610 invalidate_current_column ();
1614 DEFUN ("narrow-to-region", Fnarrow_to_region
, Snarrow_to_region
, 2, 2, "r",
1615 "Restrict editing in this buffer to the current region.\n\
1616 The rest of the text becomes temporarily invisible and untouchable\n\
1617 but is not deleted; if you save the buffer in a file, the invisible\n\
1618 text is included in the file. \\[widen] makes all visible again.\n\
1619 See also `save-restriction'.\n\
1621 When calling from a program, pass two arguments; positions (integers\n\
1622 or markers) bounding the text that should remain visible.")
1624 register Lisp_Object start
, end
;
1626 CHECK_NUMBER_COERCE_MARKER (start
, 0);
1627 CHECK_NUMBER_COERCE_MARKER (end
, 1);
1629 if (XINT (start
) > XINT (end
))
1632 tem
= start
; start
= end
; end
= tem
;
1635 if (!(BEG
<= XINT (start
) && XINT (start
) <= XINT (end
) && XINT (end
) <= Z
))
1636 args_out_of_range (start
, end
);
1638 BEGV
= XFASTINT (start
);
1639 SET_BUF_ZV (current_buffer
, XFASTINT (end
));
1640 if (point
< XFASTINT (start
))
1641 SET_PT (XFASTINT (start
));
1642 if (point
> XFASTINT (end
))
1643 SET_PT (XFASTINT (end
));
1644 current_buffer
->clip_changed
= 1;
1645 /* Changing the buffer bounds invalidates any recorded current column. */
1646 invalidate_current_column ();
1651 save_restriction_save ()
1653 register Lisp_Object bottom
, top
;
1654 /* Note: I tried using markers here, but it does not win
1655 because insertion at the end of the saved region
1656 does not advance mh and is considered "outside" the saved region. */
1657 XSETFASTINT (bottom
, BEGV
- BEG
);
1658 XSETFASTINT (top
, Z
- ZV
);
1660 return Fcons (Fcurrent_buffer (), Fcons (bottom
, top
));
1664 save_restriction_restore (data
)
1667 register struct buffer
*buf
;
1668 register int newhead
, newtail
;
1669 register Lisp_Object tem
;
1671 buf
= XBUFFER (XCONS (data
)->car
);
1673 data
= XCONS (data
)->cdr
;
1675 tem
= XCONS (data
)->car
;
1676 newhead
= XINT (tem
);
1677 tem
= XCONS (data
)->cdr
;
1678 newtail
= XINT (tem
);
1679 if (newhead
+ newtail
> BUF_Z (buf
) - BUF_BEG (buf
))
1684 BUF_BEGV (buf
) = BUF_BEG (buf
) + newhead
;
1685 SET_BUF_ZV (buf
, BUF_Z (buf
) - newtail
);
1686 current_buffer
->clip_changed
= 1;
1688 /* If point is outside the new visible range, move it inside. */
1690 clip_to_bounds (BUF_BEGV (buf
), BUF_PT (buf
), BUF_ZV (buf
)));
1695 DEFUN ("save-restriction", Fsave_restriction
, Ssave_restriction
, 0, UNEVALLED
, 0,
1696 "Execute BODY, saving and restoring current buffer's restrictions.\n\
1697 The buffer's restrictions make parts of the beginning and end invisible.\n\
1698 \(They are set up with `narrow-to-region' and eliminated with `widen'.)\n\
1699 This special form, `save-restriction', saves the current buffer's restrictions\n\
1700 when it is entered, and restores them when it is exited.\n\
1701 So any `narrow-to-region' within BODY lasts only until the end of the form.\n\
1702 The old restrictions settings are restored\n\
1703 even in case of abnormal exit (throw or error).\n\
1705 The value returned is the value of the last form in BODY.\n\
1707 `save-restriction' can get confused if, within the BODY, you widen\n\
1708 and then make changes outside the area within the saved restrictions.\n\
1710 Note: if you are using both `save-excursion' and `save-restriction',\n\
1711 use `save-excursion' outermost:\n\
1712 (save-excursion (save-restriction ...))")
1716 register Lisp_Object val
;
1717 int count
= specpdl_ptr
- specpdl
;
1719 record_unwind_protect (save_restriction_restore
, save_restriction_save ());
1720 val
= Fprogn (body
);
1721 return unbind_to (count
, val
);
1724 /* Buffer for the most recent text displayed by Fmessage. */
1725 static char *message_text
;
1727 /* Allocated length of that buffer. */
1728 static int message_length
;
1730 DEFUN ("message", Fmessage
, Smessage
, 1, MANY
, 0,
1731 "Print a one-line message at the bottom of the screen.\n\
1732 The first argument is a format control string, and the rest are data\n\
1733 to be formatted under control of the string. See `format' for details.\n\
1735 If the first argument is nil, clear any existing message; let the\n\
1736 minibuffer contents show.")
1748 register Lisp_Object val
;
1749 val
= Fformat (nargs
, args
);
1750 /* Copy the data so that it won't move when we GC. */
1753 message_text
= (char *)xmalloc (80);
1754 message_length
= 80;
1756 if (XSTRING (val
)->size
> message_length
)
1758 message_length
= XSTRING (val
)->size
;
1759 message_text
= (char *)xrealloc (message_text
, message_length
);
1761 bcopy (XSTRING (val
)->data
, message_text
, XSTRING (val
)->size
);
1762 message2 (message_text
, XSTRING (val
)->size
);
1767 DEFUN ("message-box", Fmessage_box
, Smessage_box
, 1, MANY
, 0,
1768 "Display a message, in a dialog box if possible.\n\
1769 If a dialog box is not available, use the echo area.\n\
1770 The first argument is a format control string, and the rest are data\n\
1771 to be formatted under control of the string. See `format' for details.\n\
1773 If the first argument is nil, clear any existing message; let the\n\
1774 minibuffer contents show.")
1786 register Lisp_Object val
;
1787 val
= Fformat (nargs
, args
);
1790 Lisp_Object pane
, menu
, obj
;
1791 struct gcpro gcpro1
;
1792 pane
= Fcons (Fcons (build_string ("OK"), Qt
), Qnil
);
1794 menu
= Fcons (val
, pane
);
1795 obj
= Fx_popup_dialog (Qt
, menu
);
1799 #else /* not HAVE_MENUS */
1800 /* Copy the data so that it won't move when we GC. */
1803 message_text
= (char *)xmalloc (80);
1804 message_length
= 80;
1806 if (XSTRING (val
)->size
> message_length
)
1808 message_length
= XSTRING (val
)->size
;
1809 message_text
= (char *)xrealloc (message_text
, message_length
);
1811 bcopy (XSTRING (val
)->data
, message_text
, XSTRING (val
)->size
);
1812 message2 (message_text
, XSTRING (val
)->size
);
1814 #endif /* not HAVE_MENUS */
1818 extern Lisp_Object last_nonmenu_event
;
1821 DEFUN ("message-or-box", Fmessage_or_box
, Smessage_or_box
, 1, MANY
, 0,
1822 "Display a message in a dialog box or in the echo area.\n\
1823 If this command was invoked with the mouse, use a dialog box.\n\
1824 Otherwise, use the echo area.\n\
1825 The first argument is a format control string, and the rest are data\n\
1826 to be formatted under control of the string. See `format' for details.\n\
1828 If the first argument is nil, clear any existing message; let the\n\
1829 minibuffer contents show.")
1835 if (NILP (last_nonmenu_event
) || CONSP (last_nonmenu_event
))
1836 return Fmessage_box (nargs
, args
);
1838 return Fmessage (nargs
, args
);
1841 DEFUN ("format", Fformat
, Sformat
, 1, MANY
, 0,
1842 "Format a string out of a control-string and arguments.\n\
1843 The first argument is a control string.\n\
1844 The other arguments are substituted into it to make the result, a string.\n\
1845 It may contain %-sequences meaning to substitute the next argument.\n\
1846 %s means print a string argument. Actually, prints any object, with `princ'.\n\
1847 %d means print as number in decimal (%o octal, %x hex).\n\
1848 %e means print a number in exponential notation.\n\
1849 %f means print a number in decimal-point notation.\n\
1850 %g means print a number in exponential notation\n\
1851 or decimal-point notation, whichever uses fewer characters.\n\
1852 %c means print a number as a single character.\n\
1853 %S means print any object as an s-expression (using prin1).\n\
1854 The argument used for %d, %o, %x, %e, %f, %g or %c must be a number.\n\
1855 Use %% to put a single % into the output.")
1858 register Lisp_Object
*args
;
1860 register int n
; /* The number of the next arg to substitute */
1861 register int total
= 5; /* An estimate of the final length */
1863 register unsigned char *format
, *end
;
1865 extern char *index ();
1866 /* It should not be necessary to GCPRO ARGS, because
1867 the caller in the interpreter should take care of that. */
1869 CHECK_STRING (args
[0], 0);
1870 format
= XSTRING (args
[0])->data
;
1871 end
= format
+ XSTRING (args
[0])->size
;
1874 while (format
!= end
)
1875 if (*format
++ == '%')
1879 /* Process a numeric arg and skip it. */
1880 minlen
= atoi (format
);
1884 while ((*format
>= '0' && *format
<= '9')
1885 || *format
== '-' || *format
== ' ' || *format
== '.')
1890 else if (++n
>= nargs
)
1891 error ("Not enough arguments for format string");
1892 else if (*format
== 'S')
1894 /* For `S', prin1 the argument and then treat like a string. */
1895 register Lisp_Object tem
;
1896 tem
= Fprin1_to_string (args
[n
], Qnil
);
1900 else if (SYMBOLP (args
[n
]))
1902 XSETSTRING (args
[n
], XSYMBOL (args
[n
])->name
);
1905 else if (STRINGP (args
[n
]))
1908 if (*format
!= 's' && *format
!= 'S')
1909 error ("format specifier doesn't match argument type");
1910 total
+= XSTRING (args
[n
])->size
;
1911 /* We have to put an arbitrary limit on minlen
1912 since otherwise it could make alloca fail. */
1913 if (minlen
< XSTRING (args
[n
])->size
+ 1000)
1916 /* Would get MPV otherwise, since Lisp_Int's `point' to low memory. */
1917 else if (INTEGERP (args
[n
]) && *format
!= 's')
1919 #ifdef LISP_FLOAT_TYPE
1920 /* The following loop assumes the Lisp type indicates
1921 the proper way to pass the argument.
1922 So make sure we have a flonum if the argument should
1924 if (*format
== 'e' || *format
== 'f' || *format
== 'g')
1925 args
[n
] = Ffloat (args
[n
]);
1928 /* We have to put an arbitrary limit on minlen
1929 since otherwise it could make alloca fail. */
1933 #ifdef LISP_FLOAT_TYPE
1934 else if (FLOATP (args
[n
]) && *format
!= 's')
1936 if (! (*format
== 'e' || *format
== 'f' || *format
== 'g'))
1937 args
[n
] = Ftruncate (args
[n
]);
1939 /* We have to put an arbitrary limit on minlen
1940 since otherwise it could make alloca fail. */
1947 /* Anything but a string, convert to a string using princ. */
1948 register Lisp_Object tem
;
1949 tem
= Fprin1_to_string (args
[n
], Qt
);
1956 register int nstrings
= n
+ 1;
1958 /* Allocate twice as many strings as we have %-escapes; floats occupy
1959 two slots, and we're not sure how many of those we have. */
1960 register unsigned char **strings
1961 = (unsigned char **) alloca (2 * nstrings
* sizeof (unsigned char *));
1965 for (n
= 0; n
< nstrings
; n
++)
1968 strings
[i
++] = (unsigned char *) "";
1969 else if (INTEGERP (args
[n
]))
1970 /* We checked above that the corresponding format effector
1971 isn't %s, which would cause MPV. */
1972 strings
[i
++] = (unsigned char *) XINT (args
[n
]);
1973 #ifdef LISP_FLOAT_TYPE
1974 else if (FLOATP (args
[n
]))
1976 union { double d
; char *half
[2]; } u
;
1978 u
.d
= XFLOAT (args
[n
])->data
;
1979 strings
[i
++] = (unsigned char *) u
.half
[0];
1980 strings
[i
++] = (unsigned char *) u
.half
[1];
1984 /* The first string is treated differently
1985 because it is the format string. */
1986 strings
[i
++] = XSTRING (args
[n
])->data
;
1988 strings
[i
++] = (unsigned char *) XFASTINT (args
[n
]);
1991 /* Make room in result for all the non-%-codes in the control string. */
1992 total
+= XSTRING (args
[0])->size
;
1994 /* Format it in bigger and bigger buf's until it all fits. */
1997 buf
= (char *) alloca (total
+ 1);
2000 length
= doprnt_lisp (buf
, total
+ 1, strings
[0],
2001 end
, i
-1, strings
+ 1);
2002 if (buf
[total
- 1] == 0)
2010 return make_string (buf
, length
);
2016 format1 (string1
, arg0
, arg1
, arg2
, arg3
, arg4
)
2017 EMACS_INT arg0
, arg1
, arg2
, arg3
, arg4
;
2031 doprnt (buf
, sizeof buf
, string1
, (char *)0, 5, args
);
2033 doprnt (buf
, sizeof buf
, string1
, (char *)0, 5, &string1
+ 1);
2035 return build_string (buf
);
2038 DEFUN ("char-equal", Fchar_equal
, Schar_equal
, 2, 2, 0,
2039 "Return t if two characters match, optionally ignoring case.\n\
2040 Both arguments must be characters (i.e. integers).\n\
2041 Case is ignored if `case-fold-search' is non-nil in the current buffer.")
2043 register Lisp_Object c1
, c2
;
2045 Lisp_Object
*downcase
= DOWNCASE_TABLE
;
2046 CHECK_NUMBER (c1
, 0);
2047 CHECK_NUMBER (c2
, 1);
2049 if (!NILP (current_buffer
->case_fold_search
)
2050 ? ((XINT (downcase
[0xff & XFASTINT (c1
)])
2051 == XINT (downcase
[0xff & XFASTINT (c2
)]))
2052 && (XFASTINT (c1
) & ~0xff) == (XFASTINT (c2
) & ~0xff))
2053 : XINT (c1
) == XINT (c2
))
2058 /* Transpose the markers in two regions of the current buffer, and
2059 adjust the ones between them if necessary (i.e.: if the regions
2062 Traverses the entire marker list of the buffer to do so, adding an
2063 appropriate amount to some, subtracting from some, and leaving the
2064 rest untouched. Most of this is copied from adjust_markers in insdel.c.
2066 It's the caller's job to see that (start1 <= end1 <= start2 <= end2). */
2069 transpose_markers (start1
, end1
, start2
, end2
)
2070 register int start1
, end1
, start2
, end2
;
2072 register int amt1
, amt2
, diff
, mpos
;
2073 register Lisp_Object marker
;
2075 /* Update point as if it were a marker. */
2079 TEMP_SET_PT (PT
+ (end2
- end1
));
2080 else if (PT
< start2
)
2081 TEMP_SET_PT (PT
+ (end2
- start2
) - (end1
- start1
));
2083 TEMP_SET_PT (PT
- (start2
- start1
));
2085 /* We used to adjust the endpoints here to account for the gap, but that
2086 isn't good enough. Even if we assume the caller has tried to move the
2087 gap out of our way, it might still be at start1 exactly, for example;
2088 and that places it `inside' the interval, for our purposes. The amount
2089 of adjustment is nontrivial if there's a `denormalized' marker whose
2090 position is between GPT and GPT + GAP_SIZE, so it's simpler to leave
2091 the dirty work to Fmarker_position, below. */
2093 /* The difference between the region's lengths */
2094 diff
= (end2
- start2
) - (end1
- start1
);
2096 /* For shifting each marker in a region by the length of the other
2097 * region plus the distance between the regions.
2099 amt1
= (end2
- start2
) + (start2
- end1
);
2100 amt2
= (end1
- start1
) + (start2
- end1
);
2102 for (marker
= BUF_MARKERS (current_buffer
); !NILP (marker
);
2103 marker
= XMARKER (marker
)->chain
)
2105 mpos
= Fmarker_position (marker
);
2106 if (mpos
>= start1
&& mpos
< end2
)
2110 else if (mpos
< start2
)
2114 if (mpos
> GPT
) mpos
+= GAP_SIZE
;
2115 XMARKER (marker
)->bufpos
= mpos
;
2120 DEFUN ("transpose-regions", Ftranspose_regions
, Stranspose_regions
, 4, 5, 0,
2121 "Transpose region START1 to END1 with START2 to END2.\n\
2122 The regions may not be overlapping, because the size of the buffer is\n\
2123 never changed in a transposition.\n\
2125 Optional fifth arg LEAVE_MARKERS, if non-nil, means don't transpose\n\
2126 any markers that happen to be located in the regions.\n\
2128 Transposing beyond buffer boundaries is an error.")
2129 (startr1
, endr1
, startr2
, endr2
, leave_markers
)
2130 Lisp_Object startr1
, endr1
, startr2
, endr2
, leave_markers
;
2132 register int start1
, end1
, start2
, end2
,
2133 gap
, len1
, len_mid
, len2
;
2134 unsigned char *start1_addr
, *start2_addr
, *temp
;
2136 #ifdef USE_TEXT_PROPERTIES
2137 INTERVAL cur_intv
, tmp_interval1
, tmp_interval_mid
, tmp_interval2
;
2138 cur_intv
= BUF_INTERVALS (current_buffer
);
2139 #endif /* USE_TEXT_PROPERTIES */
2141 validate_region (&startr1
, &endr1
);
2142 validate_region (&startr2
, &endr2
);
2144 start1
= XFASTINT (startr1
);
2145 end1
= XFASTINT (endr1
);
2146 start2
= XFASTINT (startr2
);
2147 end2
= XFASTINT (endr2
);
2150 /* Swap the regions if they're reversed. */
2153 register int glumph
= start1
;
2161 len1
= end1
- start1
;
2162 len2
= end2
- start2
;
2165 error ("transposed regions not properly ordered");
2166 else if (start1
== end1
|| start2
== end2
)
2167 error ("transposed region may not be of length 0");
2169 /* The possibilities are:
2170 1. Adjacent (contiguous) regions, or separate but equal regions
2171 (no, really equal, in this case!), or
2172 2. Separate regions of unequal size.
2174 The worst case is usually No. 2. It means that (aside from
2175 potential need for getting the gap out of the way), there also
2176 needs to be a shifting of the text between the two regions. So
2177 if they are spread far apart, we are that much slower... sigh. */
2179 /* It must be pointed out that the really studly thing to do would
2180 be not to move the gap at all, but to leave it in place and work
2181 around it if necessary. This would be extremely efficient,
2182 especially considering that people are likely to do
2183 transpositions near where they are working interactively, which
2184 is exactly where the gap would be found. However, such code
2185 would be much harder to write and to read. So, if you are
2186 reading this comment and are feeling squirrely, by all means have
2187 a go! I just didn't feel like doing it, so I will simply move
2188 the gap the minimum distance to get it out of the way, and then
2189 deal with an unbroken array. */
2191 /* Make sure the gap won't interfere, by moving it out of the text
2192 we will operate on. */
2193 if (start1
< gap
&& gap
< end2
)
2195 if (gap
- start1
< end2
- gap
)
2201 /* Hmmm... how about checking to see if the gap is large
2202 enough to use as the temporary storage? That would avoid an
2203 allocation... interesting. Later, don't fool with it now. */
2205 /* Working without memmove, for portability (sigh), so must be
2206 careful of overlapping subsections of the array... */
2208 if (end1
== start2
) /* adjacent regions */
2210 modify_region (current_buffer
, start1
, end2
);
2211 record_change (start1
, len1
+ len2
);
2213 #ifdef USE_TEXT_PROPERTIES
2214 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
2215 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
2216 Fset_text_properties (start1
, end2
, Qnil
, Qnil
);
2217 #endif /* USE_TEXT_PROPERTIES */
2219 /* First region smaller than second. */
2222 /* We use alloca only if it is small,
2223 because we want to avoid stack overflow. */
2225 temp
= (unsigned char *) xmalloc (len2
);
2227 temp
= (unsigned char *) alloca (len2
);
2229 /* Don't precompute these addresses. We have to compute them
2230 at the last minute, because the relocating allocator might
2231 have moved the buffer around during the xmalloc. */
2232 start1_addr
= BUF_CHAR_ADDRESS (current_buffer
, start1
);
2233 start2_addr
= BUF_CHAR_ADDRESS (current_buffer
, start2
);
2235 bcopy (start2_addr
, temp
, len2
);
2236 bcopy (start1_addr
, start1_addr
+ len2
, len1
);
2237 bcopy (temp
, start1_addr
, len2
);
2242 /* First region not smaller than second. */
2245 temp
= (unsigned char *) xmalloc (len1
);
2247 temp
= (unsigned char *) alloca (len1
);
2248 start1_addr
= BUF_CHAR_ADDRESS (current_buffer
, start1
);
2249 start2_addr
= BUF_CHAR_ADDRESS (current_buffer
, start2
);
2250 bcopy (start1_addr
, temp
, len1
);
2251 bcopy (start2_addr
, start1_addr
, len2
);
2252 bcopy (temp
, start1_addr
+ len2
, len1
);
2256 #ifdef USE_TEXT_PROPERTIES
2257 graft_intervals_into_buffer (tmp_interval1
, start1
+ len2
,
2258 len1
, current_buffer
, 0);
2259 graft_intervals_into_buffer (tmp_interval2
, start1
,
2260 len2
, current_buffer
, 0);
2261 #endif /* USE_TEXT_PROPERTIES */
2263 /* Non-adjacent regions, because end1 != start2, bleagh... */
2267 /* Regions are same size, though, how nice. */
2269 modify_region (current_buffer
, start1
, end1
);
2270 modify_region (current_buffer
, start2
, end2
);
2271 record_change (start1
, len1
);
2272 record_change (start2
, len2
);
2273 #ifdef USE_TEXT_PROPERTIES
2274 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
2275 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
2276 Fset_text_properties (start1
, end1
, Qnil
, Qnil
);
2277 Fset_text_properties (start2
, end2
, Qnil
, Qnil
);
2278 #endif /* USE_TEXT_PROPERTIES */
2281 temp
= (unsigned char *) xmalloc (len1
);
2283 temp
= (unsigned char *) alloca (len1
);
2284 start1_addr
= BUF_CHAR_ADDRESS (current_buffer
, start1
);
2285 start2_addr
= BUF_CHAR_ADDRESS (current_buffer
, start2
);
2286 bcopy (start1_addr
, temp
, len1
);
2287 bcopy (start2_addr
, start1_addr
, len2
);
2288 bcopy (temp
, start2_addr
, len1
);
2291 #ifdef USE_TEXT_PROPERTIES
2292 graft_intervals_into_buffer (tmp_interval1
, start2
,
2293 len1
, current_buffer
, 0);
2294 graft_intervals_into_buffer (tmp_interval2
, start1
,
2295 len2
, current_buffer
, 0);
2296 #endif /* USE_TEXT_PROPERTIES */
2299 else if (len1
< len2
) /* Second region larger than first */
2300 /* Non-adjacent & unequal size, area between must also be shifted. */
2302 len_mid
= start2
- end1
;
2303 modify_region (current_buffer
, start1
, end2
);
2304 record_change (start1
, (end2
- start1
));
2305 #ifdef USE_TEXT_PROPERTIES
2306 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
2307 tmp_interval_mid
= copy_intervals (cur_intv
, end1
, len_mid
);
2308 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
2309 Fset_text_properties (start1
, end2
, Qnil
, Qnil
);
2310 #endif /* USE_TEXT_PROPERTIES */
2312 /* holds region 2 */
2314 temp
= (unsigned char *) xmalloc (len2
);
2316 temp
= (unsigned char *) alloca (len2
);
2317 start1_addr
= BUF_CHAR_ADDRESS (current_buffer
, start1
);
2318 start2_addr
= BUF_CHAR_ADDRESS (current_buffer
, start2
);
2319 bcopy (start2_addr
, temp
, len2
);
2320 bcopy (start1_addr
, start1_addr
+ len_mid
+ len2
, len1
);
2321 safe_bcopy (start1_addr
+ len1
, start1_addr
+ len2
, len_mid
);
2322 bcopy (temp
, start1_addr
, len2
);
2325 #ifdef USE_TEXT_PROPERTIES
2326 graft_intervals_into_buffer (tmp_interval1
, end2
- len1
,
2327 len1
, current_buffer
, 0);
2328 graft_intervals_into_buffer (tmp_interval_mid
, start1
+ len2
,
2329 len_mid
, current_buffer
, 0);
2330 graft_intervals_into_buffer (tmp_interval2
, start1
,
2331 len2
, current_buffer
, 0);
2332 #endif /* USE_TEXT_PROPERTIES */
2335 /* Second region smaller than first. */
2337 len_mid
= start2
- end1
;
2338 record_change (start1
, (end2
- start1
));
2339 modify_region (current_buffer
, start1
, end2
);
2341 #ifdef USE_TEXT_PROPERTIES
2342 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
2343 tmp_interval_mid
= copy_intervals (cur_intv
, end1
, len_mid
);
2344 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
2345 Fset_text_properties (start1
, end2
, Qnil
, Qnil
);
2346 #endif /* USE_TEXT_PROPERTIES */
2348 /* holds region 1 */
2350 temp
= (unsigned char *) xmalloc (len1
);
2352 temp
= (unsigned char *) alloca (len1
);
2353 start1_addr
= BUF_CHAR_ADDRESS (current_buffer
, start1
);
2354 start2_addr
= BUF_CHAR_ADDRESS (current_buffer
, start2
);
2355 bcopy (start1_addr
, temp
, len1
);
2356 bcopy (start2_addr
, start1_addr
, len2
);
2357 bcopy (start1_addr
+ len1
, start1_addr
+ len2
, len_mid
);
2358 bcopy (temp
, start1_addr
+ len2
+ len_mid
, len1
);
2361 #ifdef USE_TEXT_PROPERTIES
2362 graft_intervals_into_buffer (tmp_interval1
, end2
- len1
,
2363 len1
, current_buffer
, 0);
2364 graft_intervals_into_buffer (tmp_interval_mid
, start1
+ len2
,
2365 len_mid
, current_buffer
, 0);
2366 graft_intervals_into_buffer (tmp_interval2
, start1
,
2367 len2
, current_buffer
, 0);
2368 #endif /* USE_TEXT_PROPERTIES */
2372 /* todo: this will be slow, because for every transposition, we
2373 traverse the whole friggin marker list. Possible solutions:
2374 somehow get a list of *all* the markers across multiple
2375 transpositions and do it all in one swell phoop. Or maybe modify
2376 Emacs' marker code to keep an ordered list or tree. This might
2377 be nicer, and more beneficial in the long run, but would be a
2378 bunch of work. Plus the way they're arranged now is nice. */
2379 if (NILP (leave_markers
))
2381 transpose_markers (start1
, end1
, start2
, end2
);
2382 fix_overlays_in_range (start1
, end2
);
2394 Qbuffer_access_fontify_functions
2395 = intern ("buffer-access-fontify-functions");
2396 staticpro (&Qbuffer_access_fontify_functions
);
2398 DEFVAR_LISP ("buffer-access-fontify-functions",
2399 &Vbuffer_access_fontify_functions
,
2400 "List of functions called by `buffer-substring' to fontify if necessary.\n\
2401 Each function is called with two arguments which specify the range\n\
2402 of the buffer being accessed.");
2403 Vbuffer_access_fontify_functions
= Qnil
;
2407 extern Lisp_Object Vprin1_to_string_buffer
;
2408 obuf
= Fcurrent_buffer ();
2409 /* Do this here, because init_buffer_once is too early--it won't work. */
2410 Fset_buffer (Vprin1_to_string_buffer
);
2411 /* Make sure buffer-access-fontify-functions is nil in this buffer. */
2412 Fset (Fmake_local_variable (intern ("buffer-access-fontify-functions")),
2417 DEFVAR_LISP ("buffer-access-fontified-property",
2418 &Vbuffer_access_fontified_property
,
2419 "Property which (if non-nil) indicates text has been fontified.\n\
2420 `buffer-substring' need not call the `buffer-access-fontify-functions'\n\
2421 functions if all the text being accessed has this property.");
2422 Vbuffer_access_fontified_property
= Qnil
;
2424 DEFVAR_LISP ("system-name", &Vsystem_name
,
2425 "The name of the machine Emacs is running on.");
2427 DEFVAR_LISP ("user-full-name", &Vuser_full_name
,
2428 "The full name of the user logged in.");
2430 DEFVAR_LISP ("user-login-name", &Vuser_login_name
,
2431 "The user's name, taken from environment variables if possible.");
2433 DEFVAR_LISP ("user-real-login-name", &Vuser_real_login_name
,
2434 "The user's name, based upon the real uid only.");
2436 defsubr (&Schar_equal
);
2437 defsubr (&Sgoto_char
);
2438 defsubr (&Sstring_to_char
);
2439 defsubr (&Schar_to_string
);
2440 defsubr (&Sbuffer_substring
);
2441 defsubr (&Sbuffer_substring_no_properties
);
2442 defsubr (&Sbuffer_string
);
2444 defsubr (&Spoint_marker
);
2445 defsubr (&Smark_marker
);
2447 defsubr (&Sregion_beginning
);
2448 defsubr (&Sregion_end
);
2449 /* defsubr (&Smark); */
2450 /* defsubr (&Sset_mark); */
2451 defsubr (&Ssave_excursion
);
2453 defsubr (&Sbufsize
);
2454 defsubr (&Spoint_max
);
2455 defsubr (&Spoint_min
);
2456 defsubr (&Spoint_min_marker
);
2457 defsubr (&Spoint_max_marker
);
2463 defsubr (&Sfollowing_char
);
2464 defsubr (&Sprevious_char
);
2465 defsubr (&Schar_after
);
2467 defsubr (&Sinsert_before_markers
);
2468 defsubr (&Sinsert_and_inherit
);
2469 defsubr (&Sinsert_and_inherit_before_markers
);
2470 defsubr (&Sinsert_char
);
2472 defsubr (&Suser_login_name
);
2473 defsubr (&Suser_real_login_name
);
2474 defsubr (&Suser_uid
);
2475 defsubr (&Suser_real_uid
);
2476 defsubr (&Suser_full_name
);
2477 defsubr (&Semacs_pid
);
2478 defsubr (&Scurrent_time
);
2479 defsubr (&Sformat_time_string
);
2480 defsubr (&Sdecode_time
);
2481 defsubr (&Sencode_time
);
2482 defsubr (&Scurrent_time_string
);
2483 defsubr (&Scurrent_time_zone
);
2484 defsubr (&Sset_time_zone_rule
);
2485 defsubr (&Ssystem_name
);
2486 defsubr (&Smessage
);
2487 defsubr (&Smessage_box
);
2488 defsubr (&Smessage_or_box
);
2491 defsubr (&Sinsert_buffer_substring
);
2492 defsubr (&Scompare_buffer_substrings
);
2493 defsubr (&Ssubst_char_in_region
);
2494 defsubr (&Stranslate_region
);
2495 defsubr (&Sdelete_region
);
2497 defsubr (&Snarrow_to_region
);
2498 defsubr (&Ssave_restriction
);
2499 defsubr (&Stranspose_regions
);