1 /* Lisp functions pertaining to editing.
2 Copyright (C) 1985,86,87,89,93,94,95 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
22 #include <sys/types.h>
33 #include "intervals.h"
39 #define min(a, b) ((a) < (b) ? (a) : (b))
40 #define max(a, b) ((a) > (b) ? (a) : (b))
42 extern char **environ
;
43 extern Lisp_Object
make_time ();
44 extern void insert_from_buffer ();
45 static long difftm ();
46 static void update_buffer_properties ();
47 void set_time_zone_rule ();
49 Lisp_Object Vbuffer_access_fontify_functions
;
50 Lisp_Object Qbuffer_access_fontify_functions
;
51 Lisp_Object Vbuffer_access_fontified_property
;
53 /* Some static data, and a function to initialize it for each run */
55 Lisp_Object Vsystem_name
;
56 Lisp_Object Vuser_real_login_name
; /* login name of current user ID */
57 Lisp_Object Vuser_full_name
; /* full name of current user */
58 Lisp_Object Vuser_login_name
; /* user name from LOGNAME or USER */
64 register unsigned char *p
, *q
, *r
;
65 struct passwd
*pw
; /* password entry for the current user */
66 extern char *index ();
69 /* Set up system_name even when dumping. */
73 /* Don't bother with this on initial start when just dumping out */
76 #endif /* not CANNOT_DUMP */
78 pw
= (struct passwd
*) getpwuid (getuid ());
80 /* We let the real user name default to "root" because that's quite
81 accurate on MSDOG and because it lets Emacs find the init file.
82 (The DVX libraries override the Djgpp libraries here.) */
83 Vuser_real_login_name
= build_string (pw
? pw
->pw_name
: "root");
85 Vuser_real_login_name
= build_string (pw
? pw
->pw_name
: "unknown");
88 /* Get the effective user name, by consulting environment variables,
89 or the effective uid if those are unset. */
90 user_name
= (char *) getenv ("LOGNAME");
93 user_name
= (char *) getenv ("USERNAME"); /* it's USERNAME on NT */
95 user_name
= (char *) getenv ("USER");
96 #endif /* WINDOWSNT */
99 pw
= (struct passwd
*) getpwuid (geteuid ());
100 user_name
= (char *) (pw
? pw
->pw_name
: "unknown");
102 Vuser_login_name
= build_string (user_name
);
104 /* If the user name claimed in the environment vars differs from
105 the real uid, use the claimed name to find the full name. */
106 tem
= Fstring_equal (Vuser_login_name
, Vuser_real_login_name
);
108 pw
= (struct passwd
*) getpwnam (XSTRING (Vuser_login_name
)->data
);
110 p
= (unsigned char *) (pw
? USER_FULL_NAME
: "unknown");
111 q
= (unsigned char *) index (p
, ',');
112 Vuser_full_name
= make_string (p
, q
? q
- p
: strlen (p
));
114 #ifdef AMPERSAND_FULL_NAME
115 p
= XSTRING (Vuser_full_name
)->data
;
116 q
= (unsigned char *) index (p
, '&');
117 /* Substitute the login name for the &, upcasing the first character. */
120 r
= (unsigned char *) alloca (strlen (p
)
121 + XSTRING (Vuser_login_name
)->size
+ 1);
124 strcat (r
, XSTRING (Vuser_login_name
)->data
);
125 r
[q
- p
] = UPCASE (r
[q
- p
]);
127 Vuser_full_name
= build_string (r
);
129 #endif /* AMPERSAND_FULL_NAME */
131 p
= (unsigned char *) getenv ("NAME");
133 Vuser_full_name
= build_string (p
);
136 DEFUN ("char-to-string", Fchar_to_string
, Schar_to_string
, 1, 1, 0,
137 "Convert arg CHARACTER to a one-character string containing that character.")
139 Lisp_Object character
;
142 CHECK_NUMBER (character
, 0);
144 c
= XINT (character
);
145 return make_string (&c
, 1);
148 DEFUN ("string-to-char", Fstring_to_char
, Sstring_to_char
, 1, 1, 0,
149 "Convert arg STRING to a character, the first character of that string.")
151 register Lisp_Object string
;
153 register Lisp_Object val
;
154 register struct Lisp_String
*p
;
155 CHECK_STRING (string
, 0);
157 p
= XSTRING (string
);
159 XSETFASTINT (val
, ((unsigned char *) p
->data
)[0]);
161 XSETFASTINT (val
, 0);
169 register Lisp_Object mark
;
170 mark
= Fmake_marker ();
171 Fset_marker (mark
, make_number (val
), Qnil
);
175 DEFUN ("point", Fpoint
, Spoint
, 0, 0, 0,
176 "Return value of point, as an integer.\n\
177 Beginning of buffer is position (point-min)")
181 XSETFASTINT (temp
, point
);
185 DEFUN ("point-marker", Fpoint_marker
, Spoint_marker
, 0, 0, 0,
186 "Return value of point, as a marker object.")
189 return buildmark (point
);
193 clip_to_bounds (lower
, num
, upper
)
194 int lower
, num
, upper
;
198 else if (num
> upper
)
204 DEFUN ("goto-char", Fgoto_char
, Sgoto_char
, 1, 1, "NGoto char: ",
205 "Set point to POSITION, a number or marker.\n\
206 Beginning of buffer is position (point-min), end is (point-max).")
208 register Lisp_Object position
;
210 CHECK_NUMBER_COERCE_MARKER (position
, 0);
212 SET_PT (clip_to_bounds (BEGV
, XINT (position
), ZV
));
217 region_limit (beginningp
)
220 extern Lisp_Object Vmark_even_if_inactive
; /* Defined in callint.c. */
221 register Lisp_Object m
;
222 if (!NILP (Vtransient_mark_mode
) && NILP (Vmark_even_if_inactive
)
223 && NILP (current_buffer
->mark_active
))
224 Fsignal (Qmark_inactive
, Qnil
);
225 m
= Fmarker_position (current_buffer
->mark
);
226 if (NILP (m
)) error ("There is no region now");
227 if ((point
< XFASTINT (m
)) == beginningp
)
228 return (make_number (point
));
233 DEFUN ("region-beginning", Fregion_beginning
, Sregion_beginning
, 0, 0, 0,
234 "Return position of beginning of region, as an integer.")
237 return (region_limit (1));
240 DEFUN ("region-end", Fregion_end
, Sregion_end
, 0, 0, 0,
241 "Return position of end of region, as an integer.")
244 return (region_limit (0));
247 DEFUN ("mark-marker", Fmark_marker
, Smark_marker
, 0, 0, 0,
248 "Return this buffer's mark, as a marker object.\n\
249 Watch out! Moving this marker changes the mark position.\n\
250 If you set the marker not to point anywhere, the buffer will have no mark.")
253 return current_buffer
->mark
;
257 save_excursion_save ()
259 register int visible
= (XBUFFER (XWINDOW (selected_window
)->buffer
)
262 return Fcons (Fpoint_marker (),
263 Fcons (Fcopy_marker (current_buffer
->mark
, Qnil
),
264 Fcons (visible
? Qt
: Qnil
,
265 current_buffer
->mark_active
)));
269 save_excursion_restore (info
)
272 Lisp_Object tem
, tem1
, omark
, nmark
;
273 struct gcpro gcpro1
, gcpro2
, gcpro3
;
275 tem
= Fmarker_buffer (Fcar (info
));
276 /* If buffer being returned to is now deleted, avoid error */
277 /* Otherwise could get error here while unwinding to top level
279 /* In that case, Fmarker_buffer returns nil now. */
283 omark
= nmark
= Qnil
;
284 GCPRO3 (info
, omark
, nmark
);
289 unchain_marker (tem
);
290 tem
= Fcar (Fcdr (info
));
291 omark
= Fmarker_position (current_buffer
->mark
);
292 Fset_marker (current_buffer
->mark
, tem
, Fcurrent_buffer ());
293 nmark
= Fmarker_position (tem
);
294 unchain_marker (tem
);
295 tem
= Fcdr (Fcdr (info
));
296 #if 0 /* We used to make the current buffer visible in the selected window
297 if that was true previously. That avoids some anomalies.
298 But it creates others, and it wasn't documented, and it is simpler
299 and cleaner never to alter the window/buffer connections. */
302 && current_buffer
!= XBUFFER (XWINDOW (selected_window
)->buffer
))
303 Fswitch_to_buffer (Fcurrent_buffer (), Qnil
);
306 tem1
= current_buffer
->mark_active
;
307 current_buffer
->mark_active
= Fcdr (tem
);
308 if (!NILP (Vrun_hooks
))
310 /* If mark is active now, and either was not active
311 or was at a different place, run the activate hook. */
312 if (! NILP (current_buffer
->mark_active
))
314 if (! EQ (omark
, nmark
))
315 call1 (Vrun_hooks
, intern ("activate-mark-hook"));
317 /* If mark has ceased to be active, run deactivate hook. */
318 else if (! NILP (tem1
))
319 call1 (Vrun_hooks
, intern ("deactivate-mark-hook"));
325 DEFUN ("save-excursion", Fsave_excursion
, Ssave_excursion
, 0, UNEVALLED
, 0,
326 "Save point, mark, and current buffer; execute BODY; restore those things.\n\
327 Executes BODY just like `progn'.\n\
328 The values of point, mark and the current buffer are restored\n\
329 even in case of abnormal exit (throw or error).\n\
330 The state of activation of the mark is also restored.")
334 register Lisp_Object val
;
335 int count
= specpdl_ptr
- specpdl
;
337 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
340 return unbind_to (count
, val
);
343 DEFUN ("buffer-size", Fbufsize
, Sbufsize
, 0, 0, 0,
344 "Return the number of characters in the current buffer.")
348 XSETFASTINT (temp
, Z
- BEG
);
352 DEFUN ("point-min", Fpoint_min
, Spoint_min
, 0, 0, 0,
353 "Return the minimum permissible value of point in the current buffer.\n\
354 This is 1, unless narrowing (a buffer restriction) is in effect.")
358 XSETFASTINT (temp
, BEGV
);
362 DEFUN ("point-min-marker", Fpoint_min_marker
, Spoint_min_marker
, 0, 0, 0,
363 "Return a marker to the minimum permissible value of point in this buffer.\n\
364 This is the beginning, unless narrowing (a buffer restriction) is in effect.")
367 return buildmark (BEGV
);
370 DEFUN ("point-max", Fpoint_max
, Spoint_max
, 0, 0, 0,
371 "Return the maximum permissible value of point in the current buffer.\n\
372 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)\n\
373 is in effect, in which case it is less.")
377 XSETFASTINT (temp
, ZV
);
381 DEFUN ("point-max-marker", Fpoint_max_marker
, Spoint_max_marker
, 0, 0, 0,
382 "Return a marker to the maximum permissible value of point in this buffer.\n\
383 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)\n\
384 is in effect, in which case it is less.")
387 return buildmark (ZV
);
390 DEFUN ("following-char", Ffollowing_char
, Sfollowing_char
, 0, 0, 0,
391 "Return the character following point, as a number.\n\
392 At the end of the buffer or accessible region, return 0.")
397 XSETFASTINT (temp
, 0);
399 XSETFASTINT (temp
, FETCH_CHAR (point
));
403 DEFUN ("preceding-char", Fprevious_char
, Sprevious_char
, 0, 0, 0,
404 "Return the character preceding point, as a number.\n\
405 At the beginning of the buffer or accessible region, return 0.")
410 XSETFASTINT (temp
, 0);
412 XSETFASTINT (temp
, FETCH_CHAR (point
- 1));
416 DEFUN ("bobp", Fbobp
, Sbobp
, 0, 0, 0,
417 "Return T if point is at the beginning of the buffer.\n\
418 If the buffer is narrowed, this means the beginning of the narrowed part.")
426 DEFUN ("eobp", Feobp
, Seobp
, 0, 0, 0,
427 "Return T if point is at the end of the buffer.\n\
428 If the buffer is narrowed, this means the end of the narrowed part.")
436 DEFUN ("bolp", Fbolp
, Sbolp
, 0, 0, 0,
437 "Return T if point is at the beginning of a line.")
440 if (point
== BEGV
|| FETCH_CHAR (point
- 1) == '\n')
445 DEFUN ("eolp", Feolp
, Seolp
, 0, 0, 0,
446 "Return T if point is at the end of a line.\n\
447 `End of a line' includes point being at the end of the buffer.")
450 if (point
== ZV
|| FETCH_CHAR (point
) == '\n')
455 DEFUN ("char-after", Fchar_after
, Schar_after
, 1, 1, 0,
456 "Return character in current buffer at position POS.\n\
457 POS is an integer or a buffer pointer.\n\
458 If POS is out of range, the value is nil.")
462 register Lisp_Object val
;
465 CHECK_NUMBER_COERCE_MARKER (pos
, 0);
468 if (n
< BEGV
|| n
>= ZV
) return Qnil
;
470 XSETFASTINT (val
, FETCH_CHAR (n
));
474 DEFUN ("user-login-name", Fuser_login_name
, Suser_login_name
, 0, 1, 0,
475 "Return the name under which the user logged in, as a string.\n\
476 This is based on the effective uid, not the real uid.\n\
477 Also, if the environment variable LOGNAME or USER is set,\n\
478 that determines the value of this function.\n\n\
479 If optional argument UID is an integer, return the login name of the user\n\
480 with that uid, or nil if there is no such user.")
486 /* Set up the user name info if we didn't do it before.
487 (That can happen if Emacs is dumpable
488 but you decide to run `temacs -l loadup' and not dump. */
489 if (INTEGERP (Vuser_login_name
))
493 return Vuser_login_name
;
495 CHECK_NUMBER (uid
, 0);
496 pw
= (struct passwd
*) getpwuid (XINT (uid
));
497 return (pw
? build_string (pw
->pw_name
) : Qnil
);
500 DEFUN ("user-real-login-name", Fuser_real_login_name
, Suser_real_login_name
,
502 "Return the name of the user's real uid, as a string.\n\
503 This ignores the environment variables LOGNAME and USER, so it differs from\n\
504 `user-login-name' when running under `su'.")
507 /* Set up the user name info if we didn't do it before.
508 (That can happen if Emacs is dumpable
509 but you decide to run `temacs -l loadup' and not dump. */
510 if (INTEGERP (Vuser_login_name
))
512 return Vuser_real_login_name
;
515 DEFUN ("user-uid", Fuser_uid
, Suser_uid
, 0, 0, 0,
516 "Return the effective uid of Emacs, as an integer.")
519 return make_number (geteuid ());
522 DEFUN ("user-real-uid", Fuser_real_uid
, Suser_real_uid
, 0, 0, 0,
523 "Return the real uid of Emacs, as an integer.")
526 return make_number (getuid ());
529 DEFUN ("user-full-name", Fuser_full_name
, Suser_full_name
, 0, 0, 0,
530 "Return the full name of the user logged in, as a string.")
533 return Vuser_full_name
;
536 DEFUN ("system-name", Fsystem_name
, Ssystem_name
, 0, 0, 0,
537 "Return the name of the machine you are running on, as a string.")
543 /* For the benefit of callers who don't want to include lisp.h */
547 return (char *) XSTRING (Vsystem_name
)->data
;
550 DEFUN ("emacs-pid", Femacs_pid
, Semacs_pid
, 0, 0, 0,
551 "Return the process ID of Emacs, as an integer.")
554 return make_number (getpid ());
557 DEFUN ("current-time", Fcurrent_time
, Scurrent_time
, 0, 0, 0,
558 "Return the current time, as the number of seconds since 1970-01-01 00:00:00.\n\
559 The time is returned as a list of three integers. The first has the\n\
560 most significant 16 bits of the seconds, while the second has the\n\
561 least significant 16 bits. The third integer gives the microsecond\n\
564 The microsecond count is zero on systems that do not provide\n\
565 resolution finer than a second.")
569 Lisp_Object result
[3];
572 XSETINT (result
[0], (EMACS_SECS (t
) >> 16) & 0xffff);
573 XSETINT (result
[1], (EMACS_SECS (t
) >> 0) & 0xffff);
574 XSETINT (result
[2], EMACS_USECS (t
));
576 return Flist (3, result
);
581 lisp_time_argument (specified_time
, result
)
582 Lisp_Object specified_time
;
585 if (NILP (specified_time
))
586 return time (result
) != -1;
589 Lisp_Object high
, low
;
590 high
= Fcar (specified_time
);
591 CHECK_NUMBER (high
, 0);
592 low
= Fcdr (specified_time
);
595 CHECK_NUMBER (low
, 0);
596 *result
= (XINT (high
) << 16) + (XINT (low
) & 0xffff);
597 return *result
>> 16 == XINT (high
);
601 DEFUN ("format-time-string", Fformat_time_string
, Sformat_time_string
, 1, 2, 0,
602 "Use FORMAT-STRING to format the time TIME.\n\
603 TIME is specified as (HIGH LOW . IGNORED) or (HIGH . LOW), as from\n\
604 `current-time' and `file-attributes'.\n\
605 FORMAT-STRING may contain %-sequences to substitute parts of the time.\n\
606 %a is replaced by the abbreviated name of the day of week.\n\
607 %A is replaced by the full name of the day of week.\n\
608 %b is replaced by the abbreviated name of the month.\n\
609 %B is replaced by the full name of the month.\n\
610 %c stands for the preferred date/time format of the C locale.\n\
611 %d is replaced by the day of month, zero-padded.\n\
612 %D is a synonym for \"%m/%d/%y\".\n\
613 %e is replaced by the day of month, blank-padded.\n\
614 %h is a synonym for \"%b\".\n\
615 %H is replaced by the hour (00-23).\n\
616 %I is replaced by the hour (00-12).\n\
617 %j is replaced by the day of the year (001-366).\n\
618 %k is replaced by the hour (0-23), blank padded.\n\
619 %l is replaced by the hour (1-12), blank padded.\n\
620 %m is replaced by the month (01-12).\n\
621 %M is replaced by the minute (00-59).\n\
622 %n is a synonym for \"\\n\".\n\
623 %p is replaced by AM or PM, as appropriate.\n\
624 %r is a synonym for \"%I:%M:%S %p\".\n\
625 %R is a synonym for \"%H:%M\".\n\
626 %S is replaced by the second (00-60).\n\
627 %t is a synonym for \"\\t\".\n\
628 %T is a synonym for \"%H:%M:%S\".\n\
629 %U is replaced by the week of the year (00-53), first day of week is Sunday.\n\
630 %w is replaced by the day of week (0-6), Sunday is day 0.\n\
631 %W is replaced by the week of the year (00-53), first day of week is Monday.\n\
632 %x is a locale-specific synonym, which defaults to \"%D\" in the C locale.\n\
633 %X is a locale-specific synonym, which defaults to \"%T\" in the C locale.\n\
634 %y is replaced by the year without century (00-99).\n\
635 %Y is replaced by the year with century.\n\
636 %Z is replaced by the time zone abbreviation.\n\
638 The number of options reflects the `strftime' function.")
639 (format_string
, time
)
640 Lisp_Object format_string
, time
;
645 CHECK_STRING (format_string
, 1);
647 if (! lisp_time_argument (time
, &value
))
648 error ("Invalid time specification");
650 /* This is probably enough. */
651 size
= XSTRING (format_string
)->size
* 6 + 50;
655 char *buf
= (char *) alloca (size
);
657 if (emacs_strftime (buf
, size
, XSTRING (format_string
)->data
,
660 return build_string (buf
);
661 /* If buffer was too small, make it bigger. */
666 DEFUN ("decode-time", Fdecode_time
, Sdecode_time
, 0, 1, 0,
667 "Decode a time value as (SEC MINUTE HOUR DAY MONTH YEAR DOW DST ZONE).\n\
668 The optional SPECIFIED-TIME should be a list of (HIGH LOW . IGNORED)\n\
669 or (HIGH . LOW), as from `current-time' and `file-attributes', or `nil'\n\
670 to use the current time. The list has the following nine members:\n\
671 SEC is an integer between 0 and 60; SEC is 60 for a leap second, which\n\
672 only some operating systems support. MINUTE is an integer between 0 and 59.\n\
673 HOUR is an integer between 0 and 23. DAY is an integer between 1 and 31.\n\
674 MONTH is an integer between 1 and 12. YEAR is an integer indicating the\n\
675 four-digit year. DOW is the day of week, an integer between 0 and 6, where\n\
676 0 is Sunday. DST is t if daylight savings time is effect, otherwise nil.\n\
677 ZONE is an integer indicating the number of seconds east of Greenwich.\n\
678 \(Note that Common Lisp has different meanings for DOW and ZONE.)")
680 Lisp_Object specified_time
;
684 struct tm
*decoded_time
;
685 Lisp_Object list_args
[9];
687 if (! lisp_time_argument (specified_time
, &time_spec
))
688 error ("Invalid time specification");
690 decoded_time
= localtime (&time_spec
);
691 XSETFASTINT (list_args
[0], decoded_time
->tm_sec
);
692 XSETFASTINT (list_args
[1], decoded_time
->tm_min
);
693 XSETFASTINT (list_args
[2], decoded_time
->tm_hour
);
694 XSETFASTINT (list_args
[3], decoded_time
->tm_mday
);
695 XSETFASTINT (list_args
[4], decoded_time
->tm_mon
+ 1);
696 XSETINT (list_args
[5], decoded_time
->tm_year
+ 1900);
697 XSETFASTINT (list_args
[6], decoded_time
->tm_wday
);
698 list_args
[7] = (decoded_time
->tm_isdst
)? Qt
: Qnil
;
700 /* Make a copy, in case gmtime modifies the struct. */
701 save_tm
= *decoded_time
;
702 decoded_time
= gmtime (&time_spec
);
703 if (decoded_time
== 0)
706 XSETINT (list_args
[8], difftm (&save_tm
, decoded_time
));
707 return Flist (9, list_args
);
710 DEFUN ("encode-time", Fencode_time
, Sencode_time
, 6, MANY
, 0,
711 "Convert SECOND, MINUTE, HOUR, DAY, MONTH, YEAR and ZONE to internal time.\n\
712 This is the reverse operation of `decode-time', which see.\n\
713 ZONE defaults to the current time zone rule. This can\n\
714 be a string (as from `set-time-zone-rule'), or it can be a list\n\
715 (as from `current-time-zone') or an integer (as from `decode-time')\n\
716 applied without consideration for daylight savings time.\n\
718 You can pass more than 7 arguments; then the first six arguments\n\
719 are used as SECOND through YEAR, and the *last* argument is used as ZONE.\n\
720 The intervening arguments are ignored.\n\
721 This feature lets (apply 'encode-time (decode-time ...)) work.\n\
723 Out-of-range values for SEC, MINUTE, HOUR, DAY, or MONTH are allowed;\n\
724 for example, a DAY of 0 means the day preceding the given month.\n\
725 Year numbers less than 100 are treated just like other year numbers.\n\
726 If you want them to stand for years in this century, you must do that yourself.")
729 register Lisp_Object
*args
;
733 Lisp_Object zone
= (nargs
> 6)? args
[nargs
- 1] : Qnil
;
735 CHECK_NUMBER (args
[0], 0); /* second */
736 CHECK_NUMBER (args
[1], 1); /* minute */
737 CHECK_NUMBER (args
[2], 2); /* hour */
738 CHECK_NUMBER (args
[3], 3); /* day */
739 CHECK_NUMBER (args
[4], 4); /* month */
740 CHECK_NUMBER (args
[5], 5); /* year */
742 tm
.tm_sec
= XINT (args
[0]);
743 tm
.tm_min
= XINT (args
[1]);
744 tm
.tm_hour
= XINT (args
[2]);
745 tm
.tm_mday
= XINT (args
[3]);
746 tm
.tm_mon
= XINT (args
[4]) - 1;
747 tm
.tm_year
= XINT (args
[5]) - 1900;
758 char **oldenv
= environ
, **newenv
;
761 tzstring
= (char *) XSTRING (zone
)->data
;
762 else if (INTEGERP (zone
))
764 int abszone
= abs (XINT (zone
));
765 sprintf (tzbuf
, "XXX%s%d:%02d:%02d", "-" + (XINT (zone
) < 0),
766 abszone
/ (60*60), (abszone
/60) % 60, abszone
% 60);
769 /* On NEXTSTEP, timezone environment var is ignored. */
770 tm
.tm_gmtoff
= -abszone
;
774 error ("Invalid time zone specification");
776 /* Set TZ before calling mktime; merely adjusting mktime's returned
777 value doesn't suffice, since that would mishandle leap seconds. */
778 set_time_zone_rule (tzstring
);
782 /* Restore TZ to previous value. */
786 #ifdef LOCALTIME_CACHE
791 if (time
== (time_t) -1)
792 error ("Specified time is not representable");
794 return make_time (time
);
797 DEFUN ("current-time-string", Fcurrent_time_string
, Scurrent_time_string
, 0, 1, 0,
798 "Return the current time, as a human-readable string.\n\
799 Programs can use this function to decode a time,\n\
800 since the number of columns in each field is fixed.\n\
801 The format is `Sun Sep 16 01:03:52 1973'.\n\
802 If an argument is given, it specifies a time to format\n\
803 instead of the current time. The argument should have the form:\n\
806 (HIGH LOW . IGNORED).\n\
807 Thus, you can use times obtained from `current-time'\n\
808 and from `file-attributes'.")
810 Lisp_Object specified_time
;
816 if (! lisp_time_argument (specified_time
, &value
))
818 tem
= (char *) ctime (&value
);
820 strncpy (buf
, tem
, 24);
823 return build_string (buf
);
826 #define TM_YEAR_ORIGIN 1900
828 /* Yield A - B, measured in seconds. */
833 int ay
= a
->tm_year
+ (TM_YEAR_ORIGIN
- 1);
834 int by
= b
->tm_year
+ (TM_YEAR_ORIGIN
- 1);
835 /* Divide years by 100, rounding towards minus infinity. */
836 int ac
= ay
/ 100 - (ay
% 100 < 0);
837 int bc
= by
/ 100 - (by
% 100 < 0);
838 /* Some compilers can't handle this as a single return statement. */
840 /* difference in day of year */
841 a
->tm_yday
- b
->tm_yday
842 /* + intervening leap days */
843 + ((ay
>> 2) - (by
>> 2))
845 + ((ac
>> 2) - (bc
>> 2))
846 /* + difference in years * 365 */
847 + (long)(ay
-by
) * 365
849 return (60*(60*(24*days
+ (a
->tm_hour
- b
->tm_hour
))
850 + (a
->tm_min
- b
->tm_min
))
851 + (a
->tm_sec
- b
->tm_sec
));
854 DEFUN ("current-time-zone", Fcurrent_time_zone
, Scurrent_time_zone
, 0, 1, 0,
855 "Return the offset and name for the local time zone.\n\
856 This returns a list of the form (OFFSET NAME).\n\
857 OFFSET is an integer number of seconds ahead of UTC (east of Greenwich).\n\
858 A negative value means west of Greenwich.\n\
859 NAME is a string giving the name of the time zone.\n\
860 If an argument is given, it specifies when the time zone offset is determined\n\
861 instead of using the current time. The argument should have the form:\n\
864 (HIGH LOW . IGNORED).\n\
865 Thus, you can use times obtained from `current-time'\n\
866 and from `file-attributes'.\n\
868 Some operating systems cannot provide all this information to Emacs;\n\
869 in this case, `current-time-zone' returns a list containing nil for\n\
870 the data it can't find.")
872 Lisp_Object specified_time
;
877 if (lisp_time_argument (specified_time
, &value
)
878 && (t
= gmtime (&value
)) != 0)
884 gmt
= *t
; /* Make a copy, in case localtime modifies *t. */
885 t
= localtime (&value
);
886 offset
= difftm (t
, &gmt
);
890 s
= (char *)t
->tm_zone
;
891 #else /* not HAVE_TM_ZONE */
893 if (t
->tm_isdst
== 0 || t
->tm_isdst
== 1)
894 s
= tzname
[t
->tm_isdst
];
896 #endif /* not HAVE_TM_ZONE */
899 /* No local time zone name is available; use "+-NNNN" instead. */
900 int am
= (offset
< 0 ? -offset
: offset
) / 60;
901 sprintf (buf
, "%c%02d%02d", (offset
< 0 ? '-' : '+'), am
/60, am
%60);
904 return Fcons (make_number (offset
), Fcons (build_string (s
), Qnil
));
907 return Fmake_list (2, Qnil
);
910 /* This holds the value of `environ' produced by the previous
911 call to Fset_time_zone_rule, or 0 if Fset_time_zone_rule
912 has never been called. */
913 static char **environbuf
;
915 DEFUN ("set-time-zone-rule", Fset_time_zone_rule
, Sset_time_zone_rule
, 1, 1, 0,
916 "Set the local time zone using TZ, a string specifying a time zone rule.\n\
917 If TZ is nil, use implementation-defined default time zone information.")
927 CHECK_STRING (tz
, 0);
928 tzstring
= (char *) XSTRING (tz
)->data
;
931 set_time_zone_rule (tzstring
);
934 environbuf
= environ
;
939 /* These two values are known to load tz files in buggy implementations.
940 Their values shouldn't matter in non-buggy implementations.
941 We don't use string literals for these strings,
942 since if a string in the environment is in readonly
943 storage, it runs afoul of bugs in SVR4 and Solaris 2.3.
944 See Sun bugs 1113095 and 1114114, ``Timezone routines
945 improperly modify environment''. */
947 static char set_time_zone_rule_tz1
[] = "TZ=GMT0";
948 static char set_time_zone_rule_tz2
[] = "TZ=GMT1";
950 /* Set the local time zone rule to TZSTRING.
951 This allocates memory into `environ', which it is the caller's
952 responsibility to free. */
954 set_time_zone_rule (tzstring
)
958 char **from
, **to
, **newenv
;
960 /* Make the ENVIRON vector longer with room for TZSTRING. */
961 for (from
= environ
; *from
; from
++)
963 envptrs
= from
- environ
+ 2;
964 newenv
= to
= (char **) xmalloc (envptrs
* sizeof (char *)
965 + (tzstring
? strlen (tzstring
) + 4 : 0));
967 /* Add TZSTRING to the end of environ, as a value for TZ. */
970 char *t
= (char *) (to
+ envptrs
);
972 strcat (t
, tzstring
);
976 /* Copy the old environ vector elements into NEWENV,
977 but don't copy the TZ variable.
978 So we have only one definition of TZ, which came from TZSTRING. */
979 for (from
= environ
; *from
; from
++)
980 if (strncmp (*from
, "TZ=", 3) != 0)
986 /* If we do have a TZSTRING, NEWENV points to the vector slot where
987 the TZ variable is stored. If we do not have a TZSTRING,
988 TO points to the vector slot which has the terminating null. */
990 #ifdef LOCALTIME_CACHE
992 /* In SunOS 4.1.3_U1 and 4.1.4, if TZ has a value like
993 "US/Pacific" that loads a tz file, then changes to a value like
994 "XXX0" that does not load a tz file, and then changes back to
995 its original value, the last change is (incorrectly) ignored.
996 Also, if TZ changes twice in succession to values that do
997 not load a tz file, tzset can dump core (see Sun bug#1225179).
998 The following code works around these bugs. */
1002 /* Temporarily set TZ to a value that loads a tz file
1003 and that differs from tzstring. */
1005 *newenv
= (strcmp (tzstring
, set_time_zone_rule_tz1
+ 3) == 0
1006 ? set_time_zone_rule_tz2
: set_time_zone_rule_tz1
);
1012 /* The implied tzstring is unknown, so temporarily set TZ to
1013 two different values that each load a tz file. */
1014 *to
= set_time_zone_rule_tz1
;
1017 *to
= set_time_zone_rule_tz2
;
1022 /* Now TZ has the desired value, and tzset can be invoked safely. */
1037 /* Callers passing one argument to Finsert need not gcpro the
1038 argument "array", since the only element of the array will
1039 not be used after calling insert or insert_from_string, so
1040 we don't care if it gets trashed. */
1042 DEFUN ("insert", Finsert
, Sinsert
, 0, MANY
, 0,
1043 "Insert the arguments, either strings or characters, at point.\n\
1044 Point moves forward so that it ends up after the inserted text.\n\
1045 Any other markers at the point of insertion remain before the text.")
1048 register Lisp_Object
*args
;
1050 register int argnum
;
1051 register Lisp_Object tem
;
1054 for (argnum
= 0; argnum
< nargs
; argnum
++)
1060 str
[0] = XINT (tem
);
1063 else if (STRINGP (tem
))
1065 insert_from_string (tem
, 0, XSTRING (tem
)->size
, 0);
1069 tem
= wrong_type_argument (Qchar_or_string_p
, tem
);
1077 DEFUN ("insert-and-inherit", Finsert_and_inherit
, Sinsert_and_inherit
,
1079 "Insert the arguments at point, inheriting properties from adjoining text.\n\
1080 Point moves forward so that it ends up after the inserted text.\n\
1081 Any other markers at the point of insertion remain before the text.")
1084 register Lisp_Object
*args
;
1086 register int argnum
;
1087 register Lisp_Object tem
;
1090 for (argnum
= 0; argnum
< nargs
; argnum
++)
1096 str
[0] = XINT (tem
);
1097 insert_and_inherit (str
, 1);
1099 else if (STRINGP (tem
))
1101 insert_from_string (tem
, 0, XSTRING (tem
)->size
, 1);
1105 tem
= wrong_type_argument (Qchar_or_string_p
, tem
);
1113 DEFUN ("insert-before-markers", Finsert_before_markers
, Sinsert_before_markers
, 0, MANY
, 0,
1114 "Insert strings or characters at point, relocating markers after the text.\n\
1115 Point moves forward so that it ends up after the inserted text.\n\
1116 Any other markers at the point of insertion also end up after the text.")
1119 register Lisp_Object
*args
;
1121 register int argnum
;
1122 register Lisp_Object tem
;
1125 for (argnum
= 0; argnum
< nargs
; argnum
++)
1131 str
[0] = XINT (tem
);
1132 insert_before_markers (str
, 1);
1134 else if (STRINGP (tem
))
1136 insert_from_string_before_markers (tem
, 0, XSTRING (tem
)->size
, 0);
1140 tem
= wrong_type_argument (Qchar_or_string_p
, tem
);
1148 DEFUN ("insert-before-markers-and-inherit",
1149 Finsert_and_inherit_before_markers
, Sinsert_and_inherit_before_markers
,
1151 "Insert text at point, relocating markers and inheriting properties.\n\
1152 Point moves forward so that it ends up after the inserted text.\n\
1153 Any other markers at the point of insertion also end up after the text.")
1156 register Lisp_Object
*args
;
1158 register int argnum
;
1159 register Lisp_Object tem
;
1162 for (argnum
= 0; argnum
< nargs
; argnum
++)
1168 str
[0] = XINT (tem
);
1169 insert_before_markers_and_inherit (str
, 1);
1171 else if (STRINGP (tem
))
1173 insert_from_string_before_markers (tem
, 0, XSTRING (tem
)->size
, 1);
1177 tem
= wrong_type_argument (Qchar_or_string_p
, tem
);
1185 DEFUN ("insert-char", Finsert_char
, Sinsert_char
, 2, 3, 0,
1186 "Insert COUNT (second arg) copies of CHARACTER (first arg).\n\
1187 Point and all markers are affected as in the function `insert'.\n\
1188 Both arguments are required.\n\
1189 The optional third arg INHERIT, if non-nil, says to inherit text properties\n\
1190 from adjoining text, if those properties are sticky.")
1191 (character
, count
, inherit
)
1192 Lisp_Object character
, count
, inherit
;
1194 register unsigned char *string
;
1195 register int strlen
;
1198 CHECK_NUMBER (character
, 0);
1199 CHECK_NUMBER (count
, 1);
1204 strlen
= min (n
, 256);
1205 string
= (unsigned char *) alloca (strlen
);
1206 for (i
= 0; i
< strlen
; i
++)
1207 string
[i
] = XFASTINT (character
);
1210 if (!NILP (inherit
))
1211 insert_and_inherit (string
, strlen
);
1213 insert (string
, strlen
);
1218 if (!NILP (inherit
))
1219 insert_and_inherit (string
, n
);
1227 /* Making strings from buffer contents. */
1229 /* Return a Lisp_String containing the text of the current buffer from
1230 START to END. If text properties are in use and the current buffer
1231 has properties in the range specified, the resulting string will also
1232 have them, if PROPS is nonzero.
1234 We don't want to use plain old make_string here, because it calls
1235 make_uninit_string, which can cause the buffer arena to be
1236 compacted. make_string has no way of knowing that the data has
1237 been moved, and thus copies the wrong data into the string. This
1238 doesn't effect most of the other users of make_string, so it should
1239 be left as is. But we should use this function when conjuring
1240 buffer substrings. */
1243 make_buffer_string (start
, end
, props
)
1247 Lisp_Object result
, tem
, tem1
;
1249 if (start
< GPT
&& GPT
< end
)
1252 result
= make_uninit_string (end
- start
);
1253 bcopy (&FETCH_CHAR (start
), XSTRING (result
)->data
, end
- start
);
1255 /* If desired, update and copy the text properties. */
1256 #ifdef USE_TEXT_PROPERTIES
1259 update_buffer_properties (start
, end
);
1261 tem
= Fnext_property_change (make_number (start
), Qnil
, make_number (end
));
1262 tem1
= Ftext_properties_at (make_number (start
), Qnil
);
1264 if (XINT (tem
) != end
|| !NILP (tem1
))
1265 copy_intervals_to_string (result
, current_buffer
, start
, end
- start
);
1272 /* Call Vbuffer_access_fontify_functions for the range START ... END
1273 in the current buffer, if necessary. */
1276 update_buffer_properties (start
, end
)
1279 #ifdef USE_TEXT_PROPERTIES
1280 /* If this buffer has some access functions,
1281 call them, specifying the range of the buffer being accessed. */
1282 if (!NILP (Vbuffer_access_fontify_functions
))
1284 Lisp_Object args
[3];
1287 args
[0] = Qbuffer_access_fontify_functions
;
1288 XSETINT (args
[1], start
);
1289 XSETINT (args
[2], end
);
1291 /* But don't call them if we can tell that the work
1292 has already been done. */
1293 if (!NILP (Vbuffer_access_fontified_property
))
1295 tem
= Ftext_property_any (args
[1], args
[2],
1296 Vbuffer_access_fontified_property
,
1299 Frun_hook_with_args (3, args
);
1302 Frun_hook_with_args (3, args
);
1307 DEFUN ("buffer-substring", Fbuffer_substring
, Sbuffer_substring
, 2, 2, 0,
1308 "Return the contents of part of the current buffer as a string.\n\
1309 The two arguments START and END are character positions;\n\
1310 they can be in either order.")
1312 Lisp_Object start
, end
;
1316 validate_region (&start
, &end
);
1320 return make_buffer_string (b
, e
, 1);
1323 DEFUN ("buffer-substring-no-properties", Fbuffer_substring_no_properties
,
1324 Sbuffer_substring_no_properties
, 2, 2, 0,
1325 "Return the characters of part of the buffer, without the text properties.\n\
1326 The two arguments START and END are character positions;\n\
1327 they can be in either order.")
1329 Lisp_Object start
, end
;
1333 validate_region (&start
, &end
);
1337 return make_buffer_string (b
, e
, 0);
1340 DEFUN ("buffer-string", Fbuffer_string
, Sbuffer_string
, 0, 0, 0,
1341 "Return the contents of the current buffer as a string.\n\
1342 If narrowing is in effect, this function returns only the visible part\n\
1346 return make_buffer_string (BEGV
, ZV
, 1);
1349 DEFUN ("insert-buffer-substring", Finsert_buffer_substring
, Sinsert_buffer_substring
,
1351 "Insert before point a substring of the contents of buffer BUFFER.\n\
1352 BUFFER may be a buffer or a buffer name.\n\
1353 Arguments START and END are character numbers specifying the substring.\n\
1354 They default to the beginning and the end of BUFFER.")
1356 Lisp_Object buf
, start
, end
;
1358 register int b
, e
, temp
;
1359 register struct buffer
*bp
, *obuf
;
1362 buffer
= Fget_buffer (buf
);
1365 bp
= XBUFFER (buffer
);
1371 CHECK_NUMBER_COERCE_MARKER (start
, 0);
1378 CHECK_NUMBER_COERCE_MARKER (end
, 1);
1383 temp
= b
, b
= e
, e
= temp
;
1385 if (!(BUF_BEGV (bp
) <= b
&& e
<= BUF_ZV (bp
)))
1386 args_out_of_range (start
, end
);
1388 obuf
= current_buffer
;
1389 set_buffer_internal_1 (bp
);
1390 update_buffer_properties (b
, e
);
1391 set_buffer_internal_1 (obuf
);
1393 insert_from_buffer (bp
, b
, e
- b
, 0);
1397 DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings
, Scompare_buffer_substrings
,
1399 "Compare two substrings of two buffers; return result as number.\n\
1400 the value is -N if first string is less after N-1 chars,\n\
1401 +N if first string is greater after N-1 chars, or 0 if strings match.\n\
1402 Each substring is represented as three arguments: BUFFER, START and END.\n\
1403 That makes six args in all, three for each substring.\n\n\
1404 The value of `case-fold-search' in the current buffer\n\
1405 determines whether case is significant or ignored.")
1406 (buffer1
, start1
, end1
, buffer2
, start2
, end2
)
1407 Lisp_Object buffer1
, start1
, end1
, buffer2
, start2
, end2
;
1409 register int begp1
, endp1
, begp2
, endp2
, temp
, len1
, len2
, length
, i
;
1410 register struct buffer
*bp1
, *bp2
;
1411 register Lisp_Object
*trt
1412 = (!NILP (current_buffer
->case_fold_search
)
1413 ? XCHAR_TABLE (current_buffer
->case_canon_table
)->contents
: 0);
1415 /* Find the first buffer and its substring. */
1418 bp1
= current_buffer
;
1422 buf1
= Fget_buffer (buffer1
);
1425 bp1
= XBUFFER (buf1
);
1429 begp1
= BUF_BEGV (bp1
);
1432 CHECK_NUMBER_COERCE_MARKER (start1
, 1);
1433 begp1
= XINT (start1
);
1436 endp1
= BUF_ZV (bp1
);
1439 CHECK_NUMBER_COERCE_MARKER (end1
, 2);
1440 endp1
= XINT (end1
);
1444 temp
= begp1
, begp1
= endp1
, endp1
= temp
;
1446 if (!(BUF_BEGV (bp1
) <= begp1
1448 && endp1
<= BUF_ZV (bp1
)))
1449 args_out_of_range (start1
, end1
);
1451 /* Likewise for second substring. */
1454 bp2
= current_buffer
;
1458 buf2
= Fget_buffer (buffer2
);
1461 bp2
= XBUFFER (buf2
);
1465 begp2
= BUF_BEGV (bp2
);
1468 CHECK_NUMBER_COERCE_MARKER (start2
, 4);
1469 begp2
= XINT (start2
);
1472 endp2
= BUF_ZV (bp2
);
1475 CHECK_NUMBER_COERCE_MARKER (end2
, 5);
1476 endp2
= XINT (end2
);
1480 temp
= begp2
, begp2
= endp2
, endp2
= temp
;
1482 if (!(BUF_BEGV (bp2
) <= begp2
1484 && endp2
<= BUF_ZV (bp2
)))
1485 args_out_of_range (start2
, end2
);
1487 len1
= endp1
- begp1
;
1488 len2
= endp2
- begp2
;
1493 for (i
= 0; i
< length
; i
++)
1495 int c1
= *BUF_CHAR_ADDRESS (bp1
, begp1
+ i
);
1496 int c2
= *BUF_CHAR_ADDRESS (bp2
, begp2
+ i
);
1503 return make_number (- 1 - i
);
1505 return make_number (i
+ 1);
1508 /* The strings match as far as they go.
1509 If one is shorter, that one is less. */
1511 return make_number (length
+ 1);
1512 else if (length
< len2
)
1513 return make_number (- length
- 1);
1515 /* Same length too => they are equal. */
1516 return make_number (0);
1520 subst_char_in_region_unwind (arg
)
1523 return current_buffer
->undo_list
= arg
;
1527 subst_char_in_region_unwind_1 (arg
)
1530 return current_buffer
->filename
= arg
;
1533 DEFUN ("subst-char-in-region", Fsubst_char_in_region
,
1534 Ssubst_char_in_region
, 4, 5, 0,
1535 "From START to END, replace FROMCHAR with TOCHAR each time it occurs.\n\
1536 If optional arg NOUNDO is non-nil, don't record this change for undo\n\
1537 and don't mark the buffer as really changed.")
1538 (start
, end
, fromchar
, tochar
, noundo
)
1539 Lisp_Object start
, end
, fromchar
, tochar
, noundo
;
1541 register int pos
, stop
, look
;
1543 int count
= specpdl_ptr
- specpdl
;
1545 validate_region (&start
, &end
);
1546 CHECK_NUMBER (fromchar
, 2);
1547 CHECK_NUMBER (tochar
, 3);
1551 look
= XINT (fromchar
);
1553 /* If we don't want undo, turn off putting stuff on the list.
1554 That's faster than getting rid of things,
1555 and it prevents even the entry for a first change.
1556 Also inhibit locking the file. */
1559 record_unwind_protect (subst_char_in_region_unwind
,
1560 current_buffer
->undo_list
);
1561 current_buffer
->undo_list
= Qt
;
1562 /* Don't do file-locking. */
1563 record_unwind_protect (subst_char_in_region_unwind_1
,
1564 current_buffer
->filename
);
1565 current_buffer
->filename
= Qnil
;
1570 if (FETCH_CHAR (pos
) == look
)
1574 modify_region (current_buffer
, XINT (start
), stop
);
1576 if (! NILP (noundo
))
1578 if (MODIFF
- 1 == SAVE_MODIFF
)
1580 if (MODIFF
- 1 == current_buffer
->auto_save_modified
)
1581 current_buffer
->auto_save_modified
++;
1588 record_change (pos
, 1);
1589 FETCH_CHAR (pos
) = XINT (tochar
);
1595 signal_after_change (XINT (start
),
1596 stop
- XINT (start
), stop
- XINT (start
));
1598 unbind_to (count
, Qnil
);
1602 DEFUN ("translate-region", Ftranslate_region
, Stranslate_region
, 3, 3, 0,
1603 "From START to END, translate characters according to TABLE.\n\
1604 TABLE is a string; the Nth character in it is the mapping\n\
1605 for the character with code N. Returns the number of characters changed.")
1609 register Lisp_Object table
;
1611 register int pos
, stop
; /* Limits of the region. */
1612 register unsigned char *tt
; /* Trans table. */
1613 register int oc
; /* Old character. */
1614 register int nc
; /* New character. */
1615 int cnt
; /* Number of changes made. */
1616 Lisp_Object z
; /* Return. */
1617 int size
; /* Size of translate table. */
1619 validate_region (&start
, &end
);
1620 CHECK_STRING (table
, 2);
1622 size
= XSTRING (table
)->size
;
1623 tt
= XSTRING (table
)->data
;
1627 modify_region (current_buffer
, pos
, stop
);
1630 for (; pos
< stop
; ++pos
)
1632 oc
= FETCH_CHAR (pos
);
1638 record_change (pos
, 1);
1639 FETCH_CHAR (pos
) = nc
;
1640 signal_after_change (pos
, 1, 1);
1646 XSETFASTINT (z
, cnt
);
1650 DEFUN ("delete-region", Fdelete_region
, Sdelete_region
, 2, 2, "r",
1651 "Delete the text between point and mark.\n\
1652 When called from a program, expects two arguments,\n\
1653 positions (integers or markers) specifying the stretch to be deleted.")
1655 Lisp_Object start
, end
;
1657 validate_region (&start
, &end
);
1658 del_range (XINT (start
), XINT (end
));
1662 DEFUN ("widen", Fwiden
, Swiden
, 0, 0, "",
1663 "Remove restrictions (narrowing) from current buffer.\n\
1664 This allows the buffer's full text to be seen and edited.")
1668 SET_BUF_ZV (current_buffer
, Z
);
1669 current_buffer
->clip_changed
= 1;
1670 /* Changing the buffer bounds invalidates any recorded current column. */
1671 invalidate_current_column ();
1675 DEFUN ("narrow-to-region", Fnarrow_to_region
, Snarrow_to_region
, 2, 2, "r",
1676 "Restrict editing in this buffer to the current region.\n\
1677 The rest of the text becomes temporarily invisible and untouchable\n\
1678 but is not deleted; if you save the buffer in a file, the invisible\n\
1679 text is included in the file. \\[widen] makes all visible again.\n\
1680 See also `save-restriction'.\n\
1682 When calling from a program, pass two arguments; positions (integers\n\
1683 or markers) bounding the text that should remain visible.")
1685 register Lisp_Object start
, end
;
1687 CHECK_NUMBER_COERCE_MARKER (start
, 0);
1688 CHECK_NUMBER_COERCE_MARKER (end
, 1);
1690 if (XINT (start
) > XINT (end
))
1693 tem
= start
; start
= end
; end
= tem
;
1696 if (!(BEG
<= XINT (start
) && XINT (start
) <= XINT (end
) && XINT (end
) <= Z
))
1697 args_out_of_range (start
, end
);
1699 BEGV
= XFASTINT (start
);
1700 SET_BUF_ZV (current_buffer
, XFASTINT (end
));
1701 if (point
< XFASTINT (start
))
1702 SET_PT (XFASTINT (start
));
1703 if (point
> XFASTINT (end
))
1704 SET_PT (XFASTINT (end
));
1705 current_buffer
->clip_changed
= 1;
1706 /* Changing the buffer bounds invalidates any recorded current column. */
1707 invalidate_current_column ();
1712 save_restriction_save ()
1714 register Lisp_Object bottom
, top
;
1715 /* Note: I tried using markers here, but it does not win
1716 because insertion at the end of the saved region
1717 does not advance mh and is considered "outside" the saved region. */
1718 XSETFASTINT (bottom
, BEGV
- BEG
);
1719 XSETFASTINT (top
, Z
- ZV
);
1721 return Fcons (Fcurrent_buffer (), Fcons (bottom
, top
));
1725 save_restriction_restore (data
)
1728 register struct buffer
*buf
;
1729 register int newhead
, newtail
;
1730 register Lisp_Object tem
;
1732 buf
= XBUFFER (XCONS (data
)->car
);
1734 data
= XCONS (data
)->cdr
;
1736 tem
= XCONS (data
)->car
;
1737 newhead
= XINT (tem
);
1738 tem
= XCONS (data
)->cdr
;
1739 newtail
= XINT (tem
);
1740 if (newhead
+ newtail
> BUF_Z (buf
) - BUF_BEG (buf
))
1745 BUF_BEGV (buf
) = BUF_BEG (buf
) + newhead
;
1746 SET_BUF_ZV (buf
, BUF_Z (buf
) - newtail
);
1747 current_buffer
->clip_changed
= 1;
1749 /* If point is outside the new visible range, move it inside. */
1751 clip_to_bounds (BUF_BEGV (buf
), BUF_PT (buf
), BUF_ZV (buf
)));
1756 DEFUN ("save-restriction", Fsave_restriction
, Ssave_restriction
, 0, UNEVALLED
, 0,
1757 "Execute BODY, saving and restoring current buffer's restrictions.\n\
1758 The buffer's restrictions make parts of the beginning and end invisible.\n\
1759 \(They are set up with `narrow-to-region' and eliminated with `widen'.)\n\
1760 This special form, `save-restriction', saves the current buffer's restrictions\n\
1761 when it is entered, and restores them when it is exited.\n\
1762 So any `narrow-to-region' within BODY lasts only until the end of the form.\n\
1763 The old restrictions settings are restored\n\
1764 even in case of abnormal exit (throw or error).\n\
1766 The value returned is the value of the last form in BODY.\n\
1768 `save-restriction' can get confused if, within the BODY, you widen\n\
1769 and then make changes outside the area within the saved restrictions.\n\
1771 Note: if you are using both `save-excursion' and `save-restriction',\n\
1772 use `save-excursion' outermost:\n\
1773 (save-excursion (save-restriction ...))")
1777 register Lisp_Object val
;
1778 int count
= specpdl_ptr
- specpdl
;
1780 record_unwind_protect (save_restriction_restore
, save_restriction_save ());
1781 val
= Fprogn (body
);
1782 return unbind_to (count
, val
);
1785 /* Buffer for the most recent text displayed by Fmessage. */
1786 static char *message_text
;
1788 /* Allocated length of that buffer. */
1789 static int message_length
;
1791 DEFUN ("message", Fmessage
, Smessage
, 1, MANY
, 0,
1792 "Print a one-line message at the bottom of the screen.\n\
1793 The first argument is a format control string, and the rest are data\n\
1794 to be formatted under control of the string. See `format' for details.\n\
1796 If the first argument is nil, clear any existing message; let the\n\
1797 minibuffer contents show.")
1809 register Lisp_Object val
;
1810 val
= Fformat (nargs
, args
);
1811 /* Copy the data so that it won't move when we GC. */
1814 message_text
= (char *)xmalloc (80);
1815 message_length
= 80;
1817 if (XSTRING (val
)->size
> message_length
)
1819 message_length
= XSTRING (val
)->size
;
1820 message_text
= (char *)xrealloc (message_text
, message_length
);
1822 bcopy (XSTRING (val
)->data
, message_text
, XSTRING (val
)->size
);
1823 message2 (message_text
, XSTRING (val
)->size
);
1828 DEFUN ("message-box", Fmessage_box
, Smessage_box
, 1, MANY
, 0,
1829 "Display a message, in a dialog box if possible.\n\
1830 If a dialog box is not available, use the echo area.\n\
1831 The first argument is a format control string, and the rest are data\n\
1832 to be formatted under control of the string. See `format' for details.\n\
1834 If the first argument is nil, clear any existing message; let the\n\
1835 minibuffer contents show.")
1847 register Lisp_Object val
;
1848 val
= Fformat (nargs
, args
);
1851 Lisp_Object pane
, menu
, obj
;
1852 struct gcpro gcpro1
;
1853 pane
= Fcons (Fcons (build_string ("OK"), Qt
), Qnil
);
1855 menu
= Fcons (val
, pane
);
1856 obj
= Fx_popup_dialog (Qt
, menu
);
1860 #else /* not HAVE_MENUS */
1861 /* Copy the data so that it won't move when we GC. */
1864 message_text
= (char *)xmalloc (80);
1865 message_length
= 80;
1867 if (XSTRING (val
)->size
> message_length
)
1869 message_length
= XSTRING (val
)->size
;
1870 message_text
= (char *)xrealloc (message_text
, message_length
);
1872 bcopy (XSTRING (val
)->data
, message_text
, XSTRING (val
)->size
);
1873 message2 (message_text
, XSTRING (val
)->size
);
1875 #endif /* not HAVE_MENUS */
1879 extern Lisp_Object last_nonmenu_event
;
1882 DEFUN ("message-or-box", Fmessage_or_box
, Smessage_or_box
, 1, MANY
, 0,
1883 "Display a message in a dialog box or in the echo area.\n\
1884 If this command was invoked with the mouse, use a dialog box.\n\
1885 Otherwise, use the echo area.\n\
1886 The first argument is a format control string, and the rest are data\n\
1887 to be formatted under control of the string. See `format' for details.\n\
1889 If the first argument is nil, clear any existing message; let the\n\
1890 minibuffer contents show.")
1896 if (NILP (last_nonmenu_event
) || CONSP (last_nonmenu_event
))
1897 return Fmessage_box (nargs
, args
);
1899 return Fmessage (nargs
, args
);
1902 DEFUN ("format", Fformat
, Sformat
, 1, MANY
, 0,
1903 "Format a string out of a control-string and arguments.\n\
1904 The first argument is a control string.\n\
1905 The other arguments are substituted into it to make the result, a string.\n\
1906 It may contain %-sequences meaning to substitute the next argument.\n\
1907 %s means print a string argument. Actually, prints any object, with `princ'.\n\
1908 %d means print as number in decimal (%o octal, %x hex).\n\
1909 %e means print a number in exponential notation.\n\
1910 %f means print a number in decimal-point notation.\n\
1911 %g means print a number in exponential notation\n\
1912 or decimal-point notation, whichever uses fewer characters.\n\
1913 %c means print a number as a single character.\n\
1914 %S means print any object as an s-expression (using prin1).\n\
1915 The argument used for %d, %o, %x, %e, %f, %g or %c must be a number.\n\
1916 Use %% to put a single % into the output.")
1919 register Lisp_Object
*args
;
1921 register int n
; /* The number of the next arg to substitute */
1922 register int total
= 5; /* An estimate of the final length */
1924 register unsigned char *format
, *end
;
1926 extern char *index ();
1927 /* It should not be necessary to GCPRO ARGS, because
1928 the caller in the interpreter should take care of that. */
1930 CHECK_STRING (args
[0], 0);
1931 format
= XSTRING (args
[0])->data
;
1932 end
= format
+ XSTRING (args
[0])->size
;
1935 while (format
!= end
)
1936 if (*format
++ == '%')
1940 /* Process a numeric arg and skip it. */
1941 minlen
= atoi (format
);
1945 while ((*format
>= '0' && *format
<= '9')
1946 || *format
== '-' || *format
== ' ' || *format
== '.')
1951 else if (++n
>= nargs
)
1952 error ("Not enough arguments for format string");
1953 else if (*format
== 'S')
1955 /* For `S', prin1 the argument and then treat like a string. */
1956 register Lisp_Object tem
;
1957 tem
= Fprin1_to_string (args
[n
], Qnil
);
1961 else if (SYMBOLP (args
[n
]))
1963 XSETSTRING (args
[n
], XSYMBOL (args
[n
])->name
);
1966 else if (STRINGP (args
[n
]))
1969 if (*format
!= 's' && *format
!= 'S')
1970 error ("format specifier doesn't match argument type");
1971 total
+= XSTRING (args
[n
])->size
;
1972 /* We have to put an arbitrary limit on minlen
1973 since otherwise it could make alloca fail. */
1974 if (minlen
< XSTRING (args
[n
])->size
+ 1000)
1977 /* Would get MPV otherwise, since Lisp_Int's `point' to low memory. */
1978 else if (INTEGERP (args
[n
]) && *format
!= 's')
1980 #ifdef LISP_FLOAT_TYPE
1981 /* The following loop assumes the Lisp type indicates
1982 the proper way to pass the argument.
1983 So make sure we have a flonum if the argument should
1985 if (*format
== 'e' || *format
== 'f' || *format
== 'g')
1986 args
[n
] = Ffloat (args
[n
]);
1989 /* We have to put an arbitrary limit on minlen
1990 since otherwise it could make alloca fail. */
1994 #ifdef LISP_FLOAT_TYPE
1995 else if (FLOATP (args
[n
]) && *format
!= 's')
1997 if (! (*format
== 'e' || *format
== 'f' || *format
== 'g'))
1998 args
[n
] = Ftruncate (args
[n
]);
2000 /* We have to put an arbitrary limit on minlen
2001 since otherwise it could make alloca fail. */
2008 /* Anything but a string, convert to a string using princ. */
2009 register Lisp_Object tem
;
2010 tem
= Fprin1_to_string (args
[n
], Qt
);
2017 register int nstrings
= n
+ 1;
2019 /* Allocate twice as many strings as we have %-escapes; floats occupy
2020 two slots, and we're not sure how many of those we have. */
2021 register unsigned char **strings
2022 = (unsigned char **) alloca (2 * nstrings
* sizeof (unsigned char *));
2026 for (n
= 0; n
< nstrings
; n
++)
2029 strings
[i
++] = (unsigned char *) "";
2030 else if (INTEGERP (args
[n
]))
2031 /* We checked above that the corresponding format effector
2032 isn't %s, which would cause MPV. */
2033 strings
[i
++] = (unsigned char *) XINT (args
[n
]);
2034 #ifdef LISP_FLOAT_TYPE
2035 else if (FLOATP (args
[n
]))
2037 union { double d
; char *half
[2]; } u
;
2039 u
.d
= XFLOAT (args
[n
])->data
;
2040 strings
[i
++] = (unsigned char *) u
.half
[0];
2041 strings
[i
++] = (unsigned char *) u
.half
[1];
2045 /* The first string is treated differently
2046 because it is the format string. */
2047 strings
[i
++] = XSTRING (args
[n
])->data
;
2049 strings
[i
++] = (unsigned char *) XFASTINT (args
[n
]);
2052 /* Make room in result for all the non-%-codes in the control string. */
2053 total
+= XSTRING (args
[0])->size
;
2055 /* Format it in bigger and bigger buf's until it all fits. */
2058 buf
= (char *) alloca (total
+ 1);
2061 length
= doprnt_lisp (buf
, total
+ 1, strings
[0],
2062 end
, i
-1, strings
+ 1);
2063 if (buf
[total
- 1] == 0)
2071 return make_string (buf
, length
);
2077 format1 (string1
, arg0
, arg1
, arg2
, arg3
, arg4
)
2078 EMACS_INT arg0
, arg1
, arg2
, arg3
, arg4
;
2092 doprnt (buf
, sizeof buf
, string1
, (char *)0, 5, args
);
2094 doprnt (buf
, sizeof buf
, string1
, (char *)0, 5, &string1
+ 1);
2096 return build_string (buf
);
2099 DEFUN ("char-equal", Fchar_equal
, Schar_equal
, 2, 2, 0,
2100 "Return t if two characters match, optionally ignoring case.\n\
2101 Both arguments must be characters (i.e. integers).\n\
2102 Case is ignored if `case-fold-search' is non-nil in the current buffer.")
2104 register Lisp_Object c1
, c2
;
2106 Lisp_Object
*downcase
= DOWNCASE_TABLE
;
2107 CHECK_NUMBER (c1
, 0);
2108 CHECK_NUMBER (c2
, 1);
2110 if (!NILP (current_buffer
->case_fold_search
)
2111 ? ((XINT (downcase
[0xff & XFASTINT (c1
)])
2112 == XINT (downcase
[0xff & XFASTINT (c2
)]))
2113 && (XFASTINT (c1
) & ~0xff) == (XFASTINT (c2
) & ~0xff))
2114 : XINT (c1
) == XINT (c2
))
2119 /* Transpose the markers in two regions of the current buffer, and
2120 adjust the ones between them if necessary (i.e.: if the regions
2123 Traverses the entire marker list of the buffer to do so, adding an
2124 appropriate amount to some, subtracting from some, and leaving the
2125 rest untouched. Most of this is copied from adjust_markers in insdel.c.
2127 It's the caller's job to see that (start1 <= end1 <= start2 <= end2). */
2130 transpose_markers (start1
, end1
, start2
, end2
)
2131 register int start1
, end1
, start2
, end2
;
2133 register int amt1
, amt2
, diff
, mpos
;
2134 register Lisp_Object marker
;
2136 /* Update point as if it were a marker. */
2140 TEMP_SET_PT (PT
+ (end2
- end1
));
2141 else if (PT
< start2
)
2142 TEMP_SET_PT (PT
+ (end2
- start2
) - (end1
- start1
));
2144 TEMP_SET_PT (PT
- (start2
- start1
));
2146 /* We used to adjust the endpoints here to account for the gap, but that
2147 isn't good enough. Even if we assume the caller has tried to move the
2148 gap out of our way, it might still be at start1 exactly, for example;
2149 and that places it `inside' the interval, for our purposes. The amount
2150 of adjustment is nontrivial if there's a `denormalized' marker whose
2151 position is between GPT and GPT + GAP_SIZE, so it's simpler to leave
2152 the dirty work to Fmarker_position, below. */
2154 /* The difference between the region's lengths */
2155 diff
= (end2
- start2
) - (end1
- start1
);
2157 /* For shifting each marker in a region by the length of the other
2158 * region plus the distance between the regions.
2160 amt1
= (end2
- start2
) + (start2
- end1
);
2161 amt2
= (end1
- start1
) + (start2
- end1
);
2163 for (marker
= BUF_MARKERS (current_buffer
); !NILP (marker
);
2164 marker
= XMARKER (marker
)->chain
)
2166 mpos
= Fmarker_position (marker
);
2167 if (mpos
>= start1
&& mpos
< end2
)
2171 else if (mpos
< start2
)
2175 if (mpos
> GPT
) mpos
+= GAP_SIZE
;
2176 XMARKER (marker
)->bufpos
= mpos
;
2181 DEFUN ("transpose-regions", Ftranspose_regions
, Stranspose_regions
, 4, 5, 0,
2182 "Transpose region START1 to END1 with START2 to END2.\n\
2183 The regions may not be overlapping, because the size of the buffer is\n\
2184 never changed in a transposition.\n\
2186 Optional fifth arg LEAVE_MARKERS, if non-nil, means don't transpose\n\
2187 any markers that happen to be located in the regions.\n\
2189 Transposing beyond buffer boundaries is an error.")
2190 (startr1
, endr1
, startr2
, endr2
, leave_markers
)
2191 Lisp_Object startr1
, endr1
, startr2
, endr2
, leave_markers
;
2193 register int start1
, end1
, start2
, end2
,
2194 gap
, len1
, len_mid
, len2
;
2195 unsigned char *start1_addr
, *start2_addr
, *temp
;
2197 #ifdef USE_TEXT_PROPERTIES
2198 INTERVAL cur_intv
, tmp_interval1
, tmp_interval_mid
, tmp_interval2
;
2199 cur_intv
= BUF_INTERVALS (current_buffer
);
2200 #endif /* USE_TEXT_PROPERTIES */
2202 validate_region (&startr1
, &endr1
);
2203 validate_region (&startr2
, &endr2
);
2205 start1
= XFASTINT (startr1
);
2206 end1
= XFASTINT (endr1
);
2207 start2
= XFASTINT (startr2
);
2208 end2
= XFASTINT (endr2
);
2211 /* Swap the regions if they're reversed. */
2214 register int glumph
= start1
;
2222 len1
= end1
- start1
;
2223 len2
= end2
- start2
;
2226 error ("transposed regions not properly ordered");
2227 else if (start1
== end1
|| start2
== end2
)
2228 error ("transposed region may not be of length 0");
2230 /* The possibilities are:
2231 1. Adjacent (contiguous) regions, or separate but equal regions
2232 (no, really equal, in this case!), or
2233 2. Separate regions of unequal size.
2235 The worst case is usually No. 2. It means that (aside from
2236 potential need for getting the gap out of the way), there also
2237 needs to be a shifting of the text between the two regions. So
2238 if they are spread far apart, we are that much slower... sigh. */
2240 /* It must be pointed out that the really studly thing to do would
2241 be not to move the gap at all, but to leave it in place and work
2242 around it if necessary. This would be extremely efficient,
2243 especially considering that people are likely to do
2244 transpositions near where they are working interactively, which
2245 is exactly where the gap would be found. However, such code
2246 would be much harder to write and to read. So, if you are
2247 reading this comment and are feeling squirrely, by all means have
2248 a go! I just didn't feel like doing it, so I will simply move
2249 the gap the minimum distance to get it out of the way, and then
2250 deal with an unbroken array. */
2252 /* Make sure the gap won't interfere, by moving it out of the text
2253 we will operate on. */
2254 if (start1
< gap
&& gap
< end2
)
2256 if (gap
- start1
< end2
- gap
)
2262 /* Hmmm... how about checking to see if the gap is large
2263 enough to use as the temporary storage? That would avoid an
2264 allocation... interesting. Later, don't fool with it now. */
2266 /* Working without memmove, for portability (sigh), so must be
2267 careful of overlapping subsections of the array... */
2269 if (end1
== start2
) /* adjacent regions */
2271 modify_region (current_buffer
, start1
, end2
);
2272 record_change (start1
, len1
+ len2
);
2274 #ifdef USE_TEXT_PROPERTIES
2275 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
2276 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
2277 Fset_text_properties (start1
, end2
, Qnil
, Qnil
);
2278 #endif /* USE_TEXT_PROPERTIES */
2280 /* First region smaller than second. */
2283 /* We use alloca only if it is small,
2284 because we want to avoid stack overflow. */
2286 temp
= (unsigned char *) xmalloc (len2
);
2288 temp
= (unsigned char *) alloca (len2
);
2290 /* Don't precompute these addresses. We have to compute them
2291 at the last minute, because the relocating allocator might
2292 have moved the buffer around during the xmalloc. */
2293 start1_addr
= BUF_CHAR_ADDRESS (current_buffer
, start1
);
2294 start2_addr
= BUF_CHAR_ADDRESS (current_buffer
, start2
);
2296 bcopy (start2_addr
, temp
, len2
);
2297 bcopy (start1_addr
, start1_addr
+ len2
, len1
);
2298 bcopy (temp
, start1_addr
, len2
);
2303 /* First region not smaller than second. */
2306 temp
= (unsigned char *) xmalloc (len1
);
2308 temp
= (unsigned char *) alloca (len1
);
2309 start1_addr
= BUF_CHAR_ADDRESS (current_buffer
, start1
);
2310 start2_addr
= BUF_CHAR_ADDRESS (current_buffer
, start2
);
2311 bcopy (start1_addr
, temp
, len1
);
2312 bcopy (start2_addr
, start1_addr
, len2
);
2313 bcopy (temp
, start1_addr
+ len2
, len1
);
2317 #ifdef USE_TEXT_PROPERTIES
2318 graft_intervals_into_buffer (tmp_interval1
, start1
+ len2
,
2319 len1
, current_buffer
, 0);
2320 graft_intervals_into_buffer (tmp_interval2
, start1
,
2321 len2
, current_buffer
, 0);
2322 #endif /* USE_TEXT_PROPERTIES */
2324 /* Non-adjacent regions, because end1 != start2, bleagh... */
2328 /* Regions are same size, though, how nice. */
2330 modify_region (current_buffer
, start1
, end1
);
2331 modify_region (current_buffer
, start2
, end2
);
2332 record_change (start1
, len1
);
2333 record_change (start2
, len2
);
2334 #ifdef USE_TEXT_PROPERTIES
2335 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
2336 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
2337 Fset_text_properties (start1
, end1
, Qnil
, Qnil
);
2338 Fset_text_properties (start2
, end2
, Qnil
, Qnil
);
2339 #endif /* USE_TEXT_PROPERTIES */
2342 temp
= (unsigned char *) xmalloc (len1
);
2344 temp
= (unsigned char *) alloca (len1
);
2345 start1_addr
= BUF_CHAR_ADDRESS (current_buffer
, start1
);
2346 start2_addr
= BUF_CHAR_ADDRESS (current_buffer
, start2
);
2347 bcopy (start1_addr
, temp
, len1
);
2348 bcopy (start2_addr
, start1_addr
, len2
);
2349 bcopy (temp
, start2_addr
, len1
);
2352 #ifdef USE_TEXT_PROPERTIES
2353 graft_intervals_into_buffer (tmp_interval1
, start2
,
2354 len1
, current_buffer
, 0);
2355 graft_intervals_into_buffer (tmp_interval2
, start1
,
2356 len2
, current_buffer
, 0);
2357 #endif /* USE_TEXT_PROPERTIES */
2360 else if (len1
< len2
) /* Second region larger than first */
2361 /* Non-adjacent & unequal size, area between must also be shifted. */
2363 len_mid
= start2
- end1
;
2364 modify_region (current_buffer
, start1
, end2
);
2365 record_change (start1
, (end2
- start1
));
2366 #ifdef USE_TEXT_PROPERTIES
2367 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
2368 tmp_interval_mid
= copy_intervals (cur_intv
, end1
, len_mid
);
2369 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
2370 Fset_text_properties (start1
, end2
, Qnil
, Qnil
);
2371 #endif /* USE_TEXT_PROPERTIES */
2373 /* holds region 2 */
2375 temp
= (unsigned char *) xmalloc (len2
);
2377 temp
= (unsigned char *) alloca (len2
);
2378 start1_addr
= BUF_CHAR_ADDRESS (current_buffer
, start1
);
2379 start2_addr
= BUF_CHAR_ADDRESS (current_buffer
, start2
);
2380 bcopy (start2_addr
, temp
, len2
);
2381 bcopy (start1_addr
, start1_addr
+ len_mid
+ len2
, len1
);
2382 safe_bcopy (start1_addr
+ len1
, start1_addr
+ len2
, len_mid
);
2383 bcopy (temp
, start1_addr
, len2
);
2386 #ifdef USE_TEXT_PROPERTIES
2387 graft_intervals_into_buffer (tmp_interval1
, end2
- len1
,
2388 len1
, current_buffer
, 0);
2389 graft_intervals_into_buffer (tmp_interval_mid
, start1
+ len2
,
2390 len_mid
, current_buffer
, 0);
2391 graft_intervals_into_buffer (tmp_interval2
, start1
,
2392 len2
, current_buffer
, 0);
2393 #endif /* USE_TEXT_PROPERTIES */
2396 /* Second region smaller than first. */
2398 len_mid
= start2
- end1
;
2399 record_change (start1
, (end2
- start1
));
2400 modify_region (current_buffer
, start1
, end2
);
2402 #ifdef USE_TEXT_PROPERTIES
2403 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
2404 tmp_interval_mid
= copy_intervals (cur_intv
, end1
, len_mid
);
2405 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
2406 Fset_text_properties (start1
, end2
, Qnil
, Qnil
);
2407 #endif /* USE_TEXT_PROPERTIES */
2409 /* holds region 1 */
2411 temp
= (unsigned char *) xmalloc (len1
);
2413 temp
= (unsigned char *) alloca (len1
);
2414 start1_addr
= BUF_CHAR_ADDRESS (current_buffer
, start1
);
2415 start2_addr
= BUF_CHAR_ADDRESS (current_buffer
, start2
);
2416 bcopy (start1_addr
, temp
, len1
);
2417 bcopy (start2_addr
, start1_addr
, len2
);
2418 bcopy (start1_addr
+ len1
, start1_addr
+ len2
, len_mid
);
2419 bcopy (temp
, start1_addr
+ len2
+ len_mid
, len1
);
2422 #ifdef USE_TEXT_PROPERTIES
2423 graft_intervals_into_buffer (tmp_interval1
, end2
- len1
,
2424 len1
, current_buffer
, 0);
2425 graft_intervals_into_buffer (tmp_interval_mid
, start1
+ len2
,
2426 len_mid
, current_buffer
, 0);
2427 graft_intervals_into_buffer (tmp_interval2
, start1
,
2428 len2
, current_buffer
, 0);
2429 #endif /* USE_TEXT_PROPERTIES */
2433 /* todo: this will be slow, because for every transposition, we
2434 traverse the whole friggin marker list. Possible solutions:
2435 somehow get a list of *all* the markers across multiple
2436 transpositions and do it all in one swell phoop. Or maybe modify
2437 Emacs' marker code to keep an ordered list or tree. This might
2438 be nicer, and more beneficial in the long run, but would be a
2439 bunch of work. Plus the way they're arranged now is nice. */
2440 if (NILP (leave_markers
))
2442 transpose_markers (start1
, end1
, start2
, end2
);
2443 fix_overlays_in_range (start1
, end2
);
2455 Qbuffer_access_fontify_functions
2456 = intern ("buffer-access-fontify-functions");
2457 staticpro (&Qbuffer_access_fontify_functions
);
2459 DEFVAR_LISP ("buffer-access-fontify-functions",
2460 &Vbuffer_access_fontify_functions
,
2461 "List of functions called by `buffer-substring' to fontify if necessary.\n\
2462 Each function is called with two arguments which specify the range\n\
2463 of the buffer being accessed.");
2464 Vbuffer_access_fontify_functions
= Qnil
;
2468 extern Lisp_Object Vprin1_to_string_buffer
;
2469 obuf
= Fcurrent_buffer ();
2470 /* Do this here, because init_buffer_once is too early--it won't work. */
2471 Fset_buffer (Vprin1_to_string_buffer
);
2472 /* Make sure buffer-access-fontify-functions is nil in this buffer. */
2473 Fset (Fmake_local_variable (intern ("buffer-access-fontify-functions")),
2478 DEFVAR_LISP ("buffer-access-fontified-property",
2479 &Vbuffer_access_fontified_property
,
2480 "Property which (if non-nil) indicates text has been fontified.\n\
2481 `buffer-substring' need not call the `buffer-access-fontify-functions'\n\
2482 functions if all the text being accessed has this property.");
2483 Vbuffer_access_fontified_property
= Qnil
;
2485 DEFVAR_LISP ("system-name", &Vsystem_name
,
2486 "The name of the machine Emacs is running on.");
2488 DEFVAR_LISP ("user-full-name", &Vuser_full_name
,
2489 "The full name of the user logged in.");
2491 DEFVAR_LISP ("user-login-name", &Vuser_login_name
,
2492 "The user's name, taken from environment variables if possible.");
2494 DEFVAR_LISP ("user-real-login-name", &Vuser_real_login_name
,
2495 "The user's name, based upon the real uid only.");
2497 defsubr (&Schar_equal
);
2498 defsubr (&Sgoto_char
);
2499 defsubr (&Sstring_to_char
);
2500 defsubr (&Schar_to_string
);
2501 defsubr (&Sbuffer_substring
);
2502 defsubr (&Sbuffer_substring_no_properties
);
2503 defsubr (&Sbuffer_string
);
2505 defsubr (&Spoint_marker
);
2506 defsubr (&Smark_marker
);
2508 defsubr (&Sregion_beginning
);
2509 defsubr (&Sregion_end
);
2510 /* defsubr (&Smark); */
2511 /* defsubr (&Sset_mark); */
2512 defsubr (&Ssave_excursion
);
2514 defsubr (&Sbufsize
);
2515 defsubr (&Spoint_max
);
2516 defsubr (&Spoint_min
);
2517 defsubr (&Spoint_min_marker
);
2518 defsubr (&Spoint_max_marker
);
2524 defsubr (&Sfollowing_char
);
2525 defsubr (&Sprevious_char
);
2526 defsubr (&Schar_after
);
2528 defsubr (&Sinsert_before_markers
);
2529 defsubr (&Sinsert_and_inherit
);
2530 defsubr (&Sinsert_and_inherit_before_markers
);
2531 defsubr (&Sinsert_char
);
2533 defsubr (&Suser_login_name
);
2534 defsubr (&Suser_real_login_name
);
2535 defsubr (&Suser_uid
);
2536 defsubr (&Suser_real_uid
);
2537 defsubr (&Suser_full_name
);
2538 defsubr (&Semacs_pid
);
2539 defsubr (&Scurrent_time
);
2540 defsubr (&Sformat_time_string
);
2541 defsubr (&Sdecode_time
);
2542 defsubr (&Sencode_time
);
2543 defsubr (&Scurrent_time_string
);
2544 defsubr (&Scurrent_time_zone
);
2545 defsubr (&Sset_time_zone_rule
);
2546 defsubr (&Ssystem_name
);
2547 defsubr (&Smessage
);
2548 defsubr (&Smessage_box
);
2549 defsubr (&Smessage_or_box
);
2552 defsubr (&Sinsert_buffer_substring
);
2553 defsubr (&Scompare_buffer_substrings
);
2554 defsubr (&Ssubst_char_in_region
);
2555 defsubr (&Stranslate_region
);
2556 defsubr (&Sdelete_region
);
2558 defsubr (&Snarrow_to_region
);
2559 defsubr (&Ssave_restriction
);
2560 defsubr (&Stranspose_regions
);