1 /* Lisp functions pertaining to editing.
2 Copyright (C) 1985,86,87,89,93,94,95,96,97,98, 1999, 2000
3 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
24 #include <sys/types.h>
37 #include "intervals.h"
45 #define min(a, b) ((a) < (b) ? (a) : (b))
46 #define max(a, b) ((a) > (b) ? (a) : (b))
53 extern char **environ
;
56 extern Lisp_Object make_time
P_ ((time_t));
57 extern size_t emacs_strftimeu
P_ ((char *, size_t, const char *,
58 const struct tm
*, int));
59 static int tm_diff
P_ ((struct tm
*, struct tm
*));
60 static void find_field
P_ ((Lisp_Object
, Lisp_Object
, int *, int *));
61 static void update_buffer_properties
P_ ((int, int));
62 static Lisp_Object region_limit
P_ ((int));
63 static int lisp_time_argument
P_ ((Lisp_Object
, time_t *, int *));
64 static size_t emacs_memftimeu
P_ ((char *, size_t, const char *,
65 size_t, const struct tm
*, int));
66 static void general_insert_function
P_ ((void (*) (unsigned char *, int),
67 void (*) (Lisp_Object
, int, int, int,
69 int, int, Lisp_Object
*));
70 static Lisp_Object subst_char_in_region_unwind
P_ ((Lisp_Object
));
71 static Lisp_Object subst_char_in_region_unwind_1
P_ ((Lisp_Object
));
72 static void transpose_markers
P_ ((int, int, int, int, int, int, int, int));
75 extern char *index
P_ ((const char *, int));
78 Lisp_Object Vbuffer_access_fontify_functions
;
79 Lisp_Object Qbuffer_access_fontify_functions
;
80 Lisp_Object Vbuffer_access_fontified_property
;
82 Lisp_Object Fuser_full_name
P_ ((Lisp_Object
));
84 /* Non-nil means don't stop at field boundary in text motion commands. */
86 Lisp_Object Vinhibit_field_text_motion
;
88 /* Some static data, and a function to initialize it for each run */
90 Lisp_Object Vsystem_name
;
91 Lisp_Object Vuser_real_login_name
; /* login name of current user ID */
92 Lisp_Object Vuser_full_name
; /* full name of current user */
93 Lisp_Object Vuser_login_name
; /* user name from LOGNAME or USER */
95 /* Symbol for the text property used to mark fields. */
99 /* A special value for Qfield properties. */
101 Lisp_Object Qboundary
;
108 register unsigned char *p
;
109 struct passwd
*pw
; /* password entry for the current user */
112 /* Set up system_name even when dumping. */
116 /* Don't bother with this on initial start when just dumping out */
119 #endif /* not CANNOT_DUMP */
121 pw
= (struct passwd
*) getpwuid (getuid ());
123 /* We let the real user name default to "root" because that's quite
124 accurate on MSDOG and because it lets Emacs find the init file.
125 (The DVX libraries override the Djgpp libraries here.) */
126 Vuser_real_login_name
= build_string (pw
? pw
->pw_name
: "root");
128 Vuser_real_login_name
= build_string (pw
? pw
->pw_name
: "unknown");
131 /* Get the effective user name, by consulting environment variables,
132 or the effective uid if those are unset. */
133 user_name
= (char *) getenv ("LOGNAME");
136 user_name
= (char *) getenv ("USERNAME"); /* it's USERNAME on NT */
137 #else /* WINDOWSNT */
138 user_name
= (char *) getenv ("USER");
139 #endif /* WINDOWSNT */
142 pw
= (struct passwd
*) getpwuid (geteuid ());
143 user_name
= (char *) (pw
? pw
->pw_name
: "unknown");
145 Vuser_login_name
= build_string (user_name
);
147 /* If the user name claimed in the environment vars differs from
148 the real uid, use the claimed name to find the full name. */
149 tem
= Fstring_equal (Vuser_login_name
, Vuser_real_login_name
);
150 Vuser_full_name
= Fuser_full_name (NILP (tem
)? make_number (geteuid())
153 p
= (unsigned char *) getenv ("NAME");
155 Vuser_full_name
= build_string (p
);
156 else if (NILP (Vuser_full_name
))
157 Vuser_full_name
= build_string ("unknown");
160 DEFUN ("char-to-string", Fchar_to_string
, Schar_to_string
, 1, 1, 0,
161 "Convert arg CHAR to a string containing that character.")
163 Lisp_Object character
;
166 unsigned char str
[MAX_MULTIBYTE_LENGTH
];
168 CHECK_NUMBER (character
, 0);
170 len
= CHAR_STRING (XFASTINT (character
), str
);
171 return make_string_from_bytes (str
, 1, len
);
174 DEFUN ("string-to-char", Fstring_to_char
, Sstring_to_char
, 1, 1, 0,
175 "Convert arg STRING to a character, the first character of that string.\n\
176 A multibyte character is handled correctly.")
178 register Lisp_Object string
;
180 register Lisp_Object val
;
181 register struct Lisp_String
*p
;
182 CHECK_STRING (string
, 0);
183 p
= XSTRING (string
);
186 if (STRING_MULTIBYTE (string
))
187 XSETFASTINT (val
, STRING_CHAR (p
->data
, STRING_BYTES (p
)));
189 XSETFASTINT (val
, p
->data
[0]);
192 XSETFASTINT (val
, 0);
197 buildmark (charpos
, bytepos
)
198 int charpos
, bytepos
;
200 register Lisp_Object mark
;
201 mark
= Fmake_marker ();
202 set_marker_both (mark
, Qnil
, charpos
, bytepos
);
206 DEFUN ("point", Fpoint
, Spoint
, 0, 0, 0,
207 "Return value of point, as an integer.\n\
208 Beginning of buffer is position (point-min)")
212 XSETFASTINT (temp
, PT
);
216 DEFUN ("point-marker", Fpoint_marker
, Spoint_marker
, 0, 0, 0,
217 "Return value of point, as a marker object.")
220 return buildmark (PT
, PT_BYTE
);
224 clip_to_bounds (lower
, num
, upper
)
225 int lower
, num
, upper
;
229 else if (num
> upper
)
235 DEFUN ("goto-char", Fgoto_char
, Sgoto_char
, 1, 1, "NGoto char: ",
236 "Set point to POSITION, a number or marker.\n\
237 Beginning of buffer is position (point-min), end is (point-max).\n\
238 If the position is in the middle of a multibyte form,\n\
239 the actual point is set at the head of the multibyte form\n\
240 except in the case that `enable-multibyte-characters' is nil.")
242 register Lisp_Object position
;
246 if (MARKERP (position
)
247 && current_buffer
== XMARKER (position
)->buffer
)
249 pos
= marker_position (position
);
251 SET_PT_BOTH (BEGV
, BEGV_BYTE
);
253 SET_PT_BOTH (ZV
, ZV_BYTE
);
255 SET_PT_BOTH (pos
, marker_byte_position (position
));
260 CHECK_NUMBER_COERCE_MARKER (position
, 0);
262 pos
= clip_to_bounds (BEGV
, XINT (position
), ZV
);
268 /* Return the start or end position of the region.
269 BEGINNINGP non-zero means return the start.
270 If there is no region active, signal an error. */
273 region_limit (beginningp
)
276 extern Lisp_Object Vmark_even_if_inactive
; /* Defined in callint.c. */
279 if (!NILP (Vtransient_mark_mode
)
280 && NILP (Vmark_even_if_inactive
)
281 && NILP (current_buffer
->mark_active
))
282 Fsignal (Qmark_inactive
, Qnil
);
284 m
= Fmarker_position (current_buffer
->mark
);
286 error ("There is no region now");
288 if ((PT
< XFASTINT (m
)) == beginningp
)
289 m
= make_number (PT
);
293 DEFUN ("region-beginning", Fregion_beginning
, Sregion_beginning
, 0, 0, 0,
294 "Return position of beginning of region, as an integer.")
297 return region_limit (1);
300 DEFUN ("region-end", Fregion_end
, Sregion_end
, 0, 0, 0,
301 "Return position of end of region, as an integer.")
304 return region_limit (0);
307 DEFUN ("mark-marker", Fmark_marker
, Smark_marker
, 0, 0, 0,
308 "Return this buffer's mark, as a marker object.\n\
309 Watch out! Moving this marker changes the mark position.\n\
310 If you set the marker not to point anywhere, the buffer will have no mark.")
313 return current_buffer
->mark
;
317 /* Return nonzero if POS1 and POS2 have the same value
318 for the text property PROP. */
321 char_property_eq (prop
, pos1
, pos2
)
323 Lisp_Object pos1
, pos2
;
325 Lisp_Object pval1
, pval2
;
327 pval1
= Fget_char_property (pos1
, prop
, Qnil
);
328 pval2
= Fget_char_property (pos2
, prop
, Qnil
);
330 return EQ (pval1
, pval2
);
333 /* Return the direction from which the text-property PROP would be
334 inherited by any new text inserted at POS: 1 if it would be
335 inherited from the char after POS, -1 if it would be inherited from
336 the char before POS, and 0 if from neither. */
339 text_property_stickiness (prop
, pos
)
343 Lisp_Object front_sticky
;
345 if (XINT (pos
) > BEGV
)
346 /* Consider previous character. */
348 Lisp_Object prev_pos
, rear_non_sticky
;
350 prev_pos
= make_number (XINT (pos
) - 1);
351 rear_non_sticky
= Fget_text_property (prev_pos
, Qrear_nonsticky
, Qnil
);
353 if (EQ (rear_non_sticky
, Qnil
)
354 || (CONSP (rear_non_sticky
)
355 && NILP (Fmemq (prop
, rear_non_sticky
))))
356 /* PROP is not rear-non-sticky, and since this takes precedence over
357 any front-stickiness, PROP is inherited from before. */
361 /* Consider following character. */
362 front_sticky
= Fget_text_property (pos
, Qfront_sticky
, Qnil
);
364 if (EQ (front_sticky
, Qt
)
365 || (CONSP (front_sticky
)
366 && !NILP (Fmemq (prop
, front_sticky
))))
367 /* PROP is inherited from after. */
370 /* PROP is not inherited from either side. */
375 /* Find the field surrounding POS in *BEG and *END. If POS is nil,
376 the value of point is used instead. If BEG or END null,
377 means don't store the beginning or end of the field.
379 If MERGE_AT_BOUNDARY is nonzero, then if POS is at the very first
380 position of a field, then the beginning of the previous field is
381 returned instead of the beginning of POS's field (since the end of a
382 field is actually also the beginning of the next input field, this
383 behavior is sometimes useful). Additionally in the MERGE_AT_BOUNDARY
384 true case, if two fields are separated by a field with the special
385 value `boundary', and POS lies within it, then the two separated
386 fields are considered to be adjacent, and POS between them, when
387 finding the beginning and ending of the "merged" field.
389 Either BEG or END may be 0, in which case the corresponding value
393 find_field (pos
, merge_at_boundary
, beg
, end
)
395 Lisp_Object merge_at_boundary
;
398 /* Fields right before and after the point. */
399 Lisp_Object before_field
, after_field
;
400 /* If the fields came from overlays, the associated overlays.
401 Qnil means they came from text-properties. */
402 Lisp_Object before_overlay
= Qnil
, after_overlay
= Qnil
;
403 /* 1 if POS counts as the start of a field. */
404 int at_field_start
= 0;
405 /* 1 if POS counts as the end of a field. */
406 int at_field_end
= 0;
409 XSETFASTINT (pos
, PT
);
411 CHECK_NUMBER_COERCE_MARKER (pos
, 0);
414 = get_char_property_and_overlay (pos
, Qfield
, Qnil
, &after_overlay
);
416 = (XFASTINT (pos
) > BEGV
417 ? get_char_property_and_overlay (make_number (XINT (pos
) - 1),
422 /* See if we need to handle the case where MERGE_AT_BOUNDARY is nil
423 and POS is at beginning of a field, which can also be interpreted
424 as the end of the previous field. Note that the case where if
425 MERGE_AT_BOUNDARY is non-nil (see function comment) is actually the
426 more natural one; then we avoid treating the beginning of a field
428 if (NILP (merge_at_boundary
) && !EQ (after_field
, before_field
))
429 /* We are at a boundary, see which direction is inclusive. We
430 decide by seeing which field the `field' property sticks to. */
432 /* -1 means insertions go into before_field, 1 means they go
433 into after_field, 0 means neither. */
435 /* Whether the before/after_field come from overlays. */
436 int bop
= !NILP (before_overlay
);
437 int aop
= !NILP (after_overlay
);
439 if (bop
&& XMARKER (OVERLAY_END (before_overlay
))->insertion_type
== 1)
440 /* before_field is from an overlay, which expands upon
441 end-insertions. Note that it's possible for after_overlay to
442 also eat insertions here, but then they will overlap, and
443 there's not much we can do. */
446 && XMARKER (OVERLAY_START (after_overlay
))->insertion_type
== 0)
447 /* after_field is from an overlay, which expand to contain
451 /* Both fields come from overlays, but neither will contain any
455 /* before_field is an overlay that won't eat any insertion, but
456 after_field is from a text-property. Assume that the
457 text-property continues underneath the overlay, and so will
458 be inherited by any insertion, regardless of any stickiness
462 /* Similarly, when after_field is the overlay. */
465 /* Both fields come from text-properties. Look for explicit
466 stickiness properties. */
467 stickiness
= text_property_stickiness (Qfield
, pos
);
471 else if (stickiness
< 0)
474 /* STICKINESS == 0 means that any inserted text will get a
475 `field' char-property of nil, so check to see if that
476 matches either of the adjacent characters (this being a
477 kind of "stickiness by default"). */
479 if (NILP (before_field
))
480 at_field_end
= 1; /* Sticks to the left. */
481 else if (NILP (after_field
))
482 at_field_start
= 1; /* Sticks to the right. */
486 /* Note about special `boundary' fields:
488 Consider the case where the point (`.') is between the fields `x' and `y':
492 In this situation, if merge_at_boundary is true, we consider the
493 `x' and `y' fields as forming one big merged field, and so the end
494 of the field is the end of `y'.
496 However, if `x' and `y' are separated by a special `boundary' field
497 (a field with a `field' char-property of 'boundary), then we ignore
498 this special field when merging adjacent fields. Here's the same
499 situation, but with a `boundary' field between the `x' and `y' fields:
503 Here, if point is at the end of `x', the beginning of `y', or
504 anywhere in-between (within the `boundary' field), we merge all
505 three fields and consider the beginning as being the beginning of
506 the `x' field, and the end as being the end of the `y' field. */
511 /* POS is at the edge of a field, and we should consider it as
512 the beginning of the following field. */
513 *beg
= XFASTINT (pos
);
515 /* Find the previous field boundary. */
517 if (!NILP (merge_at_boundary
) && EQ (before_field
, Qboundary
))
518 /* Skip a `boundary' field. */
519 pos
= Fprevious_single_char_property_change (pos
, Qfield
, Qnil
,Qnil
);
521 pos
= Fprevious_single_char_property_change (pos
, Qfield
, Qnil
, Qnil
);
522 *beg
= NILP (pos
) ? BEGV
: XFASTINT (pos
);
529 /* POS is at the edge of a field, and we should consider it as
530 the end of the previous field. */
531 *end
= XFASTINT (pos
);
533 /* Find the next field boundary. */
535 if (!NILP (merge_at_boundary
) && EQ (after_field
, Qboundary
))
536 /* Skip a `boundary' field. */
537 pos
= Fnext_single_char_property_change (pos
, Qfield
, Qnil
, Qnil
);
539 pos
= Fnext_single_char_property_change (pos
, Qfield
, Qnil
, Qnil
);
540 *end
= NILP (pos
) ? ZV
: XFASTINT (pos
);
546 DEFUN ("delete-field", Fdelete_field
, Sdelete_field
, 0, 1, 0,
547 "Delete the field surrounding POS.\n\
548 A field is a region of text with the same `field' property.\n\
549 If POS is nil, the value of point is used for POS.")
554 find_field (pos
, Qnil
, &beg
, &end
);
556 del_range (beg
, end
);
560 DEFUN ("field-string", Ffield_string
, Sfield_string
, 0, 1, 0,
561 "Return the contents of the field surrounding POS as a string.\n\
562 A field is a region of text with the same `field' property.\n\
563 If POS is nil, the value of point is used for POS.")
568 find_field (pos
, Qnil
, &beg
, &end
);
569 return make_buffer_string (beg
, end
, 1);
572 DEFUN ("field-string-no-properties", Ffield_string_no_properties
, Sfield_string_no_properties
, 0, 1, 0,
573 "Return the contents of the field around POS, without text-properties.\n\
574 A field is a region of text with the same `field' property.\n\
575 If POS is nil, the value of point is used for POS.")
580 find_field (pos
, Qnil
, &beg
, &end
);
581 return make_buffer_string (beg
, end
, 0);
584 DEFUN ("field-beginning", Ffield_beginning
, Sfield_beginning
, 0, 2, 0,
585 "Return the beginning of the field surrounding POS.\n\
586 A field is a region of text with the same `field' property.\n\
587 If POS is nil, the value of point is used for POS.\n\
588 If ESCAPE-FROM-EDGE is non-nil and POS is at the beginning of its\n\
589 field, then the beginning of the *previous* field is returned.")
590 (pos
, escape_from_edge
)
591 Lisp_Object pos
, escape_from_edge
;
594 find_field (pos
, escape_from_edge
, &beg
, 0);
595 return make_number (beg
);
598 DEFUN ("field-end", Ffield_end
, Sfield_end
, 0, 2, 0,
599 "Return the end of the field surrounding POS.\n\
600 A field is a region of text with the same `field' property.\n\
601 If POS is nil, the value of point is used for POS.\n\
602 If ESCAPE-FROM-EDGE is non-nil and POS is at the end of its field,\n\
603 then the end of the *following* field is returned.")
604 (pos
, escape_from_edge
)
605 Lisp_Object pos
, escape_from_edge
;
608 find_field (pos
, escape_from_edge
, 0, &end
);
609 return make_number (end
);
612 DEFUN ("constrain-to-field", Fconstrain_to_field
, Sconstrain_to_field
, 2, 5, 0,
613 "Return the position closest to NEW-POS that is in the same field as OLD-POS.\n\
615 A field is a region of text with the same `field' property.\n\
616 If NEW-POS is nil, then the current point is used instead, and set to the\n\
617 constrained position if that is is different.\n\
619 If OLD-POS is at the boundary of two fields, then the allowable\n\
620 positions for NEW-POS depends on the value of the optional argument\n\
621 ESCAPE-FROM-EDGE: If ESCAPE-FROM-EDGE is nil, then NEW-POS is\n\
622 constrained to the field that has the same `field' char-property\n\
623 as any new characters inserted at OLD-POS, whereas if ESCAPE-FROM-EDGE\n\
624 is non-nil, NEW-POS is constrained to the union of the two adjacent\n\
625 fields. Additionally, if two fields are separated by another field with\n\
626 the special value `boundary', then any point within this special field is\n\
627 also considered to be `on the boundary'.\n\
629 If the optional argument ONLY-IN-LINE is non-nil and constraining\n\
630 NEW-POS would move it to a different line, NEW-POS is returned\n\
631 unconstrained. This useful for commands that move by line, like\n\
632 \\[next-line] or \\[beginning-of-line], which should generally respect field boundaries\n\
633 only in the case where they can still move to the right line.\n\
635 If the optional argument INHIBIT-CAPTURE-PROPERTY is non-nil, and OLD-POS has\n\
636 a non-nil property of that name, then any field boundaries are ignored.\n\
638 Field boundaries are not noticed if `inhibit-field-text-motion' is non-nil.")
639 (new_pos
, old_pos
, escape_from_edge
, only_in_line
, inhibit_capture_property
)
640 Lisp_Object new_pos
, old_pos
;
641 Lisp_Object escape_from_edge
, only_in_line
, inhibit_capture_property
;
643 /* If non-zero, then the original point, before re-positioning. */
647 /* Use the current point, and afterwards, set it. */
650 XSETFASTINT (new_pos
, PT
);
653 if (NILP (Vinhibit_field_text_motion
)
654 && !EQ (new_pos
, old_pos
)
655 && (!NILP (Fget_char_property (new_pos
, Qfield
, Qnil
))
656 || !NILP (Fget_char_property (old_pos
, Qfield
, Qnil
)))
657 && (NILP (inhibit_capture_property
)
658 || NILP (Fget_char_property(old_pos
, inhibit_capture_property
, Qnil
))))
659 /* NEW_POS is not within the same field as OLD_POS; try to
660 move NEW_POS so that it is. */
663 Lisp_Object field_bound
;
665 CHECK_NUMBER_COERCE_MARKER (new_pos
, 0);
666 CHECK_NUMBER_COERCE_MARKER (old_pos
, 0);
668 fwd
= (XFASTINT (new_pos
) > XFASTINT (old_pos
));
671 field_bound
= Ffield_end (old_pos
, escape_from_edge
);
673 field_bound
= Ffield_beginning (old_pos
, escape_from_edge
);
675 if (/* See if ESCAPE_FROM_EDGE caused FIELD_BOUND to jump to the
676 other side of NEW_POS, which would mean that NEW_POS is
677 already acceptable, and it's not necessary to constrain it
679 ((XFASTINT (field_bound
) < XFASTINT (new_pos
)) ? fwd
: !fwd
)
680 /* NEW_POS should be constrained, but only if either
681 ONLY_IN_LINE is nil (in which case any constraint is OK),
682 or NEW_POS and FIELD_BOUND are on the same line (in which
683 case the constraint is OK even if ONLY_IN_LINE is non-nil). */
684 && (NILP (only_in_line
)
685 /* This is the ONLY_IN_LINE case, check that NEW_POS and
686 FIELD_BOUND are on the same line by seeing whether
687 there's an intervening newline or not. */
688 || (scan_buffer ('\n',
689 XFASTINT (new_pos
), XFASTINT (field_bound
),
690 fwd
? -1 : 1, &shortage
, 1),
692 /* Constrain NEW_POS to FIELD_BOUND. */
693 new_pos
= field_bound
;
695 if (orig_point
&& XFASTINT (new_pos
) != orig_point
)
696 /* The NEW_POS argument was originally nil, so automatically set PT. */
697 SET_PT (XFASTINT (new_pos
));
704 DEFUN ("line-beginning-position", Fline_beginning_position
, Sline_beginning_position
,
706 "Return the character position of the first character on the current line.\n\
707 With argument N not nil or 1, move forward N - 1 lines first.\n\
708 If scan reaches end of buffer, return that position.\n\
709 The scan does not cross a field boundary unless it would move\n\
710 beyond there to a different line. Field boundaries are not noticed if\n\
711 `inhibit-field-text-motion' is non-nil. .And if N is nil or 1,\n\
712 and scan starts at a field boundary, the scan stops as soon as it starts.\n\
714 This function does not move point.")
718 int orig
, orig_byte
, end
;
727 Fforward_line (make_number (XINT (n
) - 1));
730 SET_PT_BOTH (orig
, orig_byte
);
732 /* Return END constrained to the current input field. */
733 return Fconstrain_to_field (make_number (end
), make_number (orig
),
734 XINT (n
) != 1 ? Qt
: Qnil
,
738 DEFUN ("line-end-position", Fline_end_position
, Sline_end_position
,
740 "Return the character position of the last character on the current line.\n\
741 With argument N not nil or 1, move forward N - 1 lines first.\n\
742 If scan reaches end of buffer, return that position.\n\
743 This function does not move point.")
755 end_pos
= find_before_next_newline (orig
, 0, XINT (n
) - (XINT (n
) <= 0));
757 /* Return END_POS constrained to the current input field. */
758 return Fconstrain_to_field (make_number (end_pos
), make_number (orig
),
763 save_excursion_save ()
765 int visible
= (XBUFFER (XWINDOW (selected_window
)->buffer
)
768 return Fcons (Fpoint_marker (),
769 Fcons (Fcopy_marker (current_buffer
->mark
, Qnil
),
770 Fcons (visible
? Qt
: Qnil
,
771 Fcons (current_buffer
->mark_active
,
776 save_excursion_restore (info
)
779 Lisp_Object tem
, tem1
, omark
, nmark
;
780 struct gcpro gcpro1
, gcpro2
, gcpro3
;
783 tem
= Fmarker_buffer (XCAR (info
));
784 /* If buffer being returned to is now deleted, avoid error */
785 /* Otherwise could get error here while unwinding to top level
787 /* In that case, Fmarker_buffer returns nil now. */
791 omark
= nmark
= Qnil
;
792 GCPRO3 (info
, omark
, nmark
);
799 unchain_marker (tem
);
804 omark
= Fmarker_position (current_buffer
->mark
);
805 Fset_marker (current_buffer
->mark
, tem
, Fcurrent_buffer ());
806 nmark
= Fmarker_position (tem
);
807 unchain_marker (tem
);
811 visible_p
= !NILP (XCAR (info
));
813 #if 0 /* We used to make the current buffer visible in the selected window
814 if that was true previously. That avoids some anomalies.
815 But it creates others, and it wasn't documented, and it is simpler
816 and cleaner never to alter the window/buffer connections. */
819 && current_buffer
!= XBUFFER (XWINDOW (selected_window
)->buffer
))
820 Fswitch_to_buffer (Fcurrent_buffer (), Qnil
);
826 tem1
= current_buffer
->mark_active
;
827 current_buffer
->mark_active
= tem
;
829 if (!NILP (Vrun_hooks
))
831 /* If mark is active now, and either was not active
832 or was at a different place, run the activate hook. */
833 if (! NILP (current_buffer
->mark_active
))
835 if (! EQ (omark
, nmark
))
836 call1 (Vrun_hooks
, intern ("activate-mark-hook"));
838 /* If mark has ceased to be active, run deactivate hook. */
839 else if (! NILP (tem1
))
840 call1 (Vrun_hooks
, intern ("deactivate-mark-hook"));
843 /* If buffer was visible in a window, and a different window was
844 selected, and the old selected window is still showing this
845 buffer, restore point in that window. */
848 && !EQ (tem
, selected_window
)
849 /* This also verifies that the window is still live. */
850 && XBUFFER (XWINDOW (tem
)->buffer
) == current_buffer
)
851 Fset_window_point (tem
, make_number (PT
));
857 DEFUN ("save-excursion", Fsave_excursion
, Ssave_excursion
, 0, UNEVALLED
, 0,
858 "Save point, mark, and current buffer; execute BODY; restore those things.\n\
859 Executes BODY just like `progn'.\n\
860 The values of point, mark and the current buffer are restored\n\
861 even in case of abnormal exit (throw or error).\n\
862 The state of activation of the mark is also restored.\n\
864 This construct does not save `deactivate-mark', and therefore\n\
865 functions that change the buffer will still cause deactivation\n\
866 of the mark at the end of the command. To prevent that, bind\n\
867 `deactivate-mark' with `let'.")
871 register Lisp_Object val
;
872 int count
= specpdl_ptr
- specpdl
;
874 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
877 return unbind_to (count
, val
);
880 DEFUN ("save-current-buffer", Fsave_current_buffer
, Ssave_current_buffer
, 0, UNEVALLED
, 0,
881 "Save the current buffer; execute BODY; restore the current buffer.\n\
882 Executes BODY just like `progn'.")
887 int count
= specpdl_ptr
- specpdl
;
889 record_unwind_protect (set_buffer_if_live
, Fcurrent_buffer ());
892 return unbind_to (count
, val
);
895 DEFUN ("buffer-size", Fbufsize
, Sbufsize
, 0, 1, 0,
896 "Return the number of characters in the current buffer.\n\
897 If BUFFER, return the number of characters in that buffer instead.")
902 return make_number (Z
- BEG
);
905 CHECK_BUFFER (buffer
, 1);
906 return make_number (BUF_Z (XBUFFER (buffer
))
907 - BUF_BEG (XBUFFER (buffer
)));
911 DEFUN ("point-min", Fpoint_min
, Spoint_min
, 0, 0, 0,
912 "Return the minimum permissible value of point in the current buffer.\n\
913 This is 1, unless narrowing (a buffer restriction) is in effect.")
917 XSETFASTINT (temp
, BEGV
);
921 DEFUN ("point-min-marker", Fpoint_min_marker
, Spoint_min_marker
, 0, 0, 0,
922 "Return a marker to the minimum permissible value of point in this buffer.\n\
923 This is the beginning, unless narrowing (a buffer restriction) is in effect.")
926 return buildmark (BEGV
, BEGV_BYTE
);
929 DEFUN ("point-max", Fpoint_max
, Spoint_max
, 0, 0, 0,
930 "Return the maximum permissible value of point in the current buffer.\n\
931 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)\n\
932 is in effect, in which case it is less.")
936 XSETFASTINT (temp
, ZV
);
940 DEFUN ("point-max-marker", Fpoint_max_marker
, Spoint_max_marker
, 0, 0, 0,
941 "Return a marker to the maximum permissible value of point in this buffer.\n\
942 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)\n\
943 is in effect, in which case it is less.")
946 return buildmark (ZV
, ZV_BYTE
);
949 DEFUN ("gap-position", Fgap_position
, Sgap_position
, 0, 0, 0,
950 "Return the position of the gap, in the current buffer.\n\
951 See also `gap-size'.")
955 XSETFASTINT (temp
, GPT
);
959 DEFUN ("gap-size", Fgap_size
, Sgap_size
, 0, 0, 0,
960 "Return the size of the current buffer's gap.\n\
961 See also `gap-position'.")
965 XSETFASTINT (temp
, GAP_SIZE
);
969 DEFUN ("position-bytes", Fposition_bytes
, Sposition_bytes
, 1, 1, 0,
970 "Return the byte position for character position POSITION.\n\
971 If POSITION is out of range, the value is nil.")
973 Lisp_Object position
;
975 CHECK_NUMBER_COERCE_MARKER (position
, 1);
976 if (XINT (position
) < BEG
|| XINT (position
) > Z
)
978 return make_number (CHAR_TO_BYTE (XINT (position
)));
981 DEFUN ("byte-to-position", Fbyte_to_position
, Sbyte_to_position
, 1, 1, 0,
982 "Return the character position for byte position BYTEPOS.\n\
983 If BYTEPOS is out of range, the value is nil.")
987 CHECK_NUMBER (bytepos
, 1);
988 if (XINT (bytepos
) < BEG_BYTE
|| XINT (bytepos
) > Z_BYTE
)
990 return make_number (BYTE_TO_CHAR (XINT (bytepos
)));
993 DEFUN ("following-char", Ffollowing_char
, Sfollowing_char
, 0, 0, 0,
994 "Return the character following point, as a number.\n\
995 At the end of the buffer or accessible region, return 0.")
1000 XSETFASTINT (temp
, 0);
1002 XSETFASTINT (temp
, FETCH_CHAR (PT_BYTE
));
1006 DEFUN ("preceding-char", Fprevious_char
, Sprevious_char
, 0, 0, 0,
1007 "Return the character preceding point, as a number.\n\
1008 At the beginning of the buffer or accessible region, return 0.")
1013 XSETFASTINT (temp
, 0);
1014 else if (!NILP (current_buffer
->enable_multibyte_characters
))
1018 XSETFASTINT (temp
, FETCH_CHAR (pos
));
1021 XSETFASTINT (temp
, FETCH_BYTE (PT_BYTE
- 1));
1025 DEFUN ("bobp", Fbobp
, Sbobp
, 0, 0, 0,
1026 "Return t if point is at the beginning of the buffer.\n\
1027 If the buffer is narrowed, this means the beginning of the narrowed part.")
1035 DEFUN ("eobp", Feobp
, Seobp
, 0, 0, 0,
1036 "Return t if point is at the end of the buffer.\n\
1037 If the buffer is narrowed, this means the end of the narrowed part.")
1045 DEFUN ("bolp", Fbolp
, Sbolp
, 0, 0, 0,
1046 "Return t if point is at the beginning of a line.")
1049 if (PT
== BEGV
|| FETCH_BYTE (PT_BYTE
- 1) == '\n')
1054 DEFUN ("eolp", Feolp
, Seolp
, 0, 0, 0,
1055 "Return t if point is at the end of a line.\n\
1056 `End of a line' includes point being at the end of the buffer.")
1059 if (PT
== ZV
|| FETCH_BYTE (PT_BYTE
) == '\n')
1064 DEFUN ("char-after", Fchar_after
, Schar_after
, 0, 1, 0,
1065 "Return character in current buffer at position POS.\n\
1066 POS is an integer or a marker.\n\
1067 If POS is out of range, the value is nil.")
1071 register int pos_byte
;
1076 XSETFASTINT (pos
, PT
);
1081 pos_byte
= marker_byte_position (pos
);
1082 if (pos_byte
< BEGV_BYTE
|| pos_byte
>= ZV_BYTE
)
1087 CHECK_NUMBER_COERCE_MARKER (pos
, 0);
1088 if (XINT (pos
) < BEGV
|| XINT (pos
) >= ZV
)
1091 pos_byte
= CHAR_TO_BYTE (XINT (pos
));
1094 return make_number (FETCH_CHAR (pos_byte
));
1097 DEFUN ("char-before", Fchar_before
, Schar_before
, 0, 1, 0,
1098 "Return character in current buffer preceding position POS.\n\
1099 POS is an integer or a marker.\n\
1100 If POS is out of range, the value is nil.")
1104 register Lisp_Object val
;
1105 register int pos_byte
;
1110 XSETFASTINT (pos
, PT
);
1115 pos_byte
= marker_byte_position (pos
);
1117 if (pos_byte
<= BEGV_BYTE
|| pos_byte
> ZV_BYTE
)
1122 CHECK_NUMBER_COERCE_MARKER (pos
, 0);
1124 if (XINT (pos
) <= BEGV
|| XINT (pos
) > ZV
)
1127 pos_byte
= CHAR_TO_BYTE (XINT (pos
));
1130 if (!NILP (current_buffer
->enable_multibyte_characters
))
1133 XSETFASTINT (val
, FETCH_CHAR (pos_byte
));
1138 XSETFASTINT (val
, FETCH_BYTE (pos_byte
));
1143 DEFUN ("user-login-name", Fuser_login_name
, Suser_login_name
, 0, 1, 0,
1144 "Return the name under which the user logged in, as a string.\n\
1145 This is based on the effective uid, not the real uid.\n\
1146 Also, if the environment variable LOGNAME or USER is set,\n\
1147 that determines the value of this function.\n\n\
1148 If optional argument UID is an integer, return the login name of the user\n\
1149 with that uid, or nil if there is no such user.")
1155 /* Set up the user name info if we didn't do it before.
1156 (That can happen if Emacs is dumpable
1157 but you decide to run `temacs -l loadup' and not dump. */
1158 if (INTEGERP (Vuser_login_name
))
1162 return Vuser_login_name
;
1164 CHECK_NUMBER (uid
, 0);
1165 pw
= (struct passwd
*) getpwuid (XINT (uid
));
1166 return (pw
? build_string (pw
->pw_name
) : Qnil
);
1169 DEFUN ("user-real-login-name", Fuser_real_login_name
, Suser_real_login_name
,
1171 "Return the name of the user's real uid, as a string.\n\
1172 This ignores the environment variables LOGNAME and USER, so it differs from\n\
1173 `user-login-name' when running under `su'.")
1176 /* Set up the user name info if we didn't do it before.
1177 (That can happen if Emacs is dumpable
1178 but you decide to run `temacs -l loadup' and not dump. */
1179 if (INTEGERP (Vuser_login_name
))
1181 return Vuser_real_login_name
;
1184 DEFUN ("user-uid", Fuser_uid
, Suser_uid
, 0, 0, 0,
1185 "Return the effective uid of Emacs, as an integer.")
1188 return make_number (geteuid ());
1191 DEFUN ("user-real-uid", Fuser_real_uid
, Suser_real_uid
, 0, 0, 0,
1192 "Return the real uid of Emacs, as an integer.")
1195 return make_number (getuid ());
1198 DEFUN ("user-full-name", Fuser_full_name
, Suser_full_name
, 0, 1, 0,
1199 "Return the full name of the user logged in, as a string.\n\
1200 If the full name corresponding to Emacs's userid is not known,\n\
1201 return \"unknown\".\n\
1203 If optional argument UID is an integer, return the full name of the user\n\
1204 with that uid, or nil if there is no such user.\n\
1205 If UID is a string, return the full name of the user with that login\n\
1206 name, or nil if there is no such user.")
1211 register unsigned char *p
, *q
;
1215 return Vuser_full_name
;
1216 else if (NUMBERP (uid
))
1217 pw
= (struct passwd
*) getpwuid (XINT (uid
));
1218 else if (STRINGP (uid
))
1219 pw
= (struct passwd
*) getpwnam (XSTRING (uid
)->data
);
1221 error ("Invalid UID specification");
1226 p
= (unsigned char *) USER_FULL_NAME
;
1227 /* Chop off everything after the first comma. */
1228 q
= (unsigned char *) index (p
, ',');
1229 full
= make_string (p
, q
? q
- p
: strlen (p
));
1231 #ifdef AMPERSAND_FULL_NAME
1232 p
= XSTRING (full
)->data
;
1233 q
= (unsigned char *) index (p
, '&');
1234 /* Substitute the login name for the &, upcasing the first character. */
1237 register unsigned char *r
;
1240 login
= Fuser_login_name (make_number (pw
->pw_uid
));
1241 r
= (unsigned char *) alloca (strlen (p
) + XSTRING (login
)->size
+ 1);
1242 bcopy (p
, r
, q
- p
);
1244 strcat (r
, XSTRING (login
)->data
);
1245 r
[q
- p
] = UPCASE (r
[q
- p
]);
1247 full
= build_string (r
);
1249 #endif /* AMPERSAND_FULL_NAME */
1254 DEFUN ("system-name", Fsystem_name
, Ssystem_name
, 0, 0, 0,
1255 "Return the name of the machine you are running on, as a string.")
1258 return Vsystem_name
;
1261 /* For the benefit of callers who don't want to include lisp.h */
1266 if (STRINGP (Vsystem_name
))
1267 return (char *) XSTRING (Vsystem_name
)->data
;
1272 DEFUN ("emacs-pid", Femacs_pid
, Semacs_pid
, 0, 0, 0,
1273 "Return the process ID of Emacs, as an integer.")
1276 return make_number (getpid ());
1279 DEFUN ("current-time", Fcurrent_time
, Scurrent_time
, 0, 0, 0,
1280 "Return the current time, as the number of seconds since 1970-01-01 00:00:00.\n\
1281 The time is returned as a list of three integers. The first has the\n\
1282 most significant 16 bits of the seconds, while the second has the\n\
1283 least significant 16 bits. The third integer gives the microsecond\n\
1286 The microsecond count is zero on systems that do not provide\n\
1287 resolution finer than a second.")
1291 Lisp_Object result
[3];
1294 XSETINT (result
[0], (EMACS_SECS (t
) >> 16) & 0xffff);
1295 XSETINT (result
[1], (EMACS_SECS (t
) >> 0) & 0xffff);
1296 XSETINT (result
[2], EMACS_USECS (t
));
1298 return Flist (3, result
);
1303 lisp_time_argument (specified_time
, result
, usec
)
1304 Lisp_Object specified_time
;
1308 if (NILP (specified_time
))
1315 *usec
= EMACS_USECS (t
);
1316 *result
= EMACS_SECS (t
);
1320 return time (result
) != -1;
1324 Lisp_Object high
, low
;
1325 high
= Fcar (specified_time
);
1326 CHECK_NUMBER (high
, 0);
1327 low
= Fcdr (specified_time
);
1332 Lisp_Object usec_l
= Fcdr (low
);
1334 usec_l
= Fcar (usec_l
);
1339 CHECK_NUMBER (usec_l
, 0);
1340 *usec
= XINT (usec_l
);
1347 CHECK_NUMBER (low
, 0);
1348 *result
= (XINT (high
) << 16) + (XINT (low
) & 0xffff);
1349 return *result
>> 16 == XINT (high
);
1353 DEFUN ("float-time", Ffloat_time
, Sfloat_time
, 0, 1, 0,
1354 "Return the current time, as a float number of seconds since the epoch.\n\
1355 If an argument is given, it specifies a time to convert to float\n\
1356 instead of the current time. The argument should have the forms:\n\
1357 (HIGH . LOW) or (HIGH LOW USEC) or (HIGH LOW . USEC).\n\
1358 Thus, you can use times obtained from `current-time'\n\
1359 and from `file-attributes'.")
1361 Lisp_Object specified_time
;
1366 if (! lisp_time_argument (specified_time
, &sec
, &usec
))
1367 error ("Invalid time specification");
1369 return make_float (sec
+ usec
* 0.0000001);
1372 /* Write information into buffer S of size MAXSIZE, according to the
1373 FORMAT of length FORMAT_LEN, using time information taken from *TP.
1374 Default to Universal Time if UT is nonzero, local time otherwise.
1375 Return the number of bytes written, not including the terminating
1376 '\0'. If S is NULL, nothing will be written anywhere; so to
1377 determine how many bytes would be written, use NULL for S and
1378 ((size_t) -1) for MAXSIZE.
1380 This function behaves like emacs_strftimeu, except it allows null
1383 emacs_memftimeu (s
, maxsize
, format
, format_len
, tp
, ut
)
1388 const struct tm
*tp
;
1393 /* Loop through all the null-terminated strings in the format
1394 argument. Normally there's just one null-terminated string, but
1395 there can be arbitrarily many, concatenated together, if the
1396 format contains '\0' bytes. emacs_strftimeu stops at the first
1397 '\0' byte so we must invoke it separately for each such string. */
1406 result
= emacs_strftimeu (s
, maxsize
, format
, tp
, ut
);
1410 if (result
== 0 && s
[0] != '\0')
1415 maxsize
-= result
+ 1;
1417 len
= strlen (format
);
1418 if (len
== format_len
)
1422 format_len
-= len
+ 1;
1427 DEFUN ("format-time-string", Fformat_time_string, Sformat_time_string, 1, 3, 0,
1428 "Use FORMAT-STRING to format the time TIME, or now if omitted.\n\
1429 TIME is specified as (HIGH LOW . IGNORED) or (HIGH . LOW), as returned by\n\
1430 `current-time' or `file-attributes'.\n\
1431 The third, optional, argument UNIVERSAL, if non-nil, means describe TIME\n\
1432 as Universal Time; nil means describe TIME in the local time zone.\n\
1433 The value is a copy of FORMAT-STRING, but with certain constructs replaced\n\
1434 by text that describes the specified date and time in TIME:\n\
1436 %Y is the year, %y within the century, %C the century.\n\
1437 %G is the year corresponding to the ISO week, %g within the century.\n\
1438 %m is the numeric month.\n\
1439 %b and %h are the locale's abbreviated month name, %B the full name.\n\
1440 %d is the day of the month, zero-padded, %e is blank-padded.\n\
1441 %u is the numeric day of week from 1 (Monday) to 7, %w from 0 (Sunday) to 6.\n\
1442 %a is the locale's abbreviated name of the day of week, %A the full name.\n\
1443 %U is the week number starting on Sunday, %W starting on Monday,\n\
1444 %V according to ISO 8601.\n\
1445 %j is the day of the year.\n\
1447 %H is the hour on a 24-hour clock, %I is on a 12-hour clock, %k is like %H\n\
1448 only blank-padded, %l is like %I blank-padded.\n\
1449 %p is the locale's equivalent of either AM or PM.\n\
1450 %M is the minute.\n\
1451 %S is the second.\n\
1452 %Z is the time zone name, %z is the numeric form.\n\
1453 %s is the number of seconds since 1970-01-01 00:00:00 +0000.\n\
1455 %c is the locale's date and time format.\n\
1456 %x is the locale's \"preferred\" date format.\n\
1457 %D is like \"%m/%d/%y\".\n\
1459 %R is like \"%H:%M\", %T is like \"%H:%M:%S\", %r is like \"%I:%M:%S %p\".\n\
1460 %X is the locale's \"preferred\" time format.\n\
1462 Finally, %n is a newline, %t is a tab, %% is a literal %.\n\
1464 Certain flags and modifiers are available with some format controls.\n\
1465 The flags are `_', `-', `^' and `#'. For certain characters X,\n\
1466 %_X is like %X, but padded with blanks; %-X is like %X,\n\
1467 ut without padding. %^X is like %X but with all textual\n\
1468 characters up-cased; %#X is like %X but with letter-case of\n\
1469 all textual characters reversed.\n\
1470 %NX (where N stands for an integer) is like %X,\n\
1471 but takes up at least N (a number) positions.\n\
1472 The modifiers are `E' and `O'. For certain characters X,\n\
1473 %EX is a locale's alternative version of %X;\n\
1474 %OX is like %X, but uses the locale's number symbols.\n\
1476 For example, to produce full ISO 8601 format, use \"%Y-%m-%dT%T%z\".")
1477 (format_string, time, universal)
1480 DEFUN ("format-time-string", Fformat_time_string
, Sformat_time_string
, 1, 3, 0,
1481 0 /* See immediately above */)
1482 (format_string
, time
, universal
)
1483 Lisp_Object format_string
, time
, universal
;
1488 int ut
= ! NILP (universal
);
1490 CHECK_STRING (format_string
, 1);
1492 if (! lisp_time_argument (time
, &value
, NULL
))
1493 error ("Invalid time specification");
1495 format_string
= code_convert_string_norecord (format_string
,
1496 Vlocale_coding_system
, 1);
1498 /* This is probably enough. */
1499 size
= STRING_BYTES (XSTRING (format_string
)) * 6 + 50;
1501 tm
= ut
? gmtime (&value
) : localtime (&value
);
1503 error ("Specified time is not representable");
1505 synchronize_system_time_locale ();
1509 char *buf
= (char *) alloca (size
+ 1);
1513 result
= emacs_memftimeu (buf
, size
, XSTRING (format_string
)->data
,
1514 STRING_BYTES (XSTRING (format_string
)),
1516 if ((result
> 0 && result
< size
) || (result
== 0 && buf
[0] == '\0'))
1517 return code_convert_string_norecord (make_string (buf
, result
),
1518 Vlocale_coding_system
, 0);
1520 /* If buffer was too small, make it bigger and try again. */
1521 result
= emacs_memftimeu (NULL
, (size_t) -1,
1522 XSTRING (format_string
)->data
,
1523 STRING_BYTES (XSTRING (format_string
)),
1529 DEFUN ("decode-time", Fdecode_time
, Sdecode_time
, 0, 1, 0,
1530 "Decode a time value as (SEC MINUTE HOUR DAY MONTH YEAR DOW DST ZONE).\n\
1531 The optional SPECIFIED-TIME should be a list of (HIGH LOW . IGNORED)\n\
1532 or (HIGH . LOW), as from `current-time' and `file-attributes', or `nil'\n\
1533 to use the current time. The list has the following nine members:\n\
1534 SEC is an integer between 0 and 60; SEC is 60 for a leap second, which\n\
1535 only some operating systems support. MINUTE is an integer between 0 and 59.\n\
1536 HOUR is an integer between 0 and 23. DAY is an integer between 1 and 31.\n\
1537 MONTH is an integer between 1 and 12. YEAR is an integer indicating the\n\
1538 four-digit year. DOW is the day of week, an integer between 0 and 6, where\n\
1539 0 is Sunday. DST is t if daylight savings time is effect, otherwise nil.\n\
1540 ZONE is an integer indicating the number of seconds east of Greenwich.\n\
1541 \(Note that Common Lisp has different meanings for DOW and ZONE.)")
1543 Lisp_Object specified_time
;
1547 struct tm
*decoded_time
;
1548 Lisp_Object list_args
[9];
1550 if (! lisp_time_argument (specified_time
, &time_spec
, NULL
))
1551 error ("Invalid time specification");
1553 decoded_time
= localtime (&time_spec
);
1555 error ("Specified time is not representable");
1556 XSETFASTINT (list_args
[0], decoded_time
->tm_sec
);
1557 XSETFASTINT (list_args
[1], decoded_time
->tm_min
);
1558 XSETFASTINT (list_args
[2], decoded_time
->tm_hour
);
1559 XSETFASTINT (list_args
[3], decoded_time
->tm_mday
);
1560 XSETFASTINT (list_args
[4], decoded_time
->tm_mon
+ 1);
1561 XSETINT (list_args
[5], decoded_time
->tm_year
+ 1900);
1562 XSETFASTINT (list_args
[6], decoded_time
->tm_wday
);
1563 list_args
[7] = (decoded_time
->tm_isdst
)? Qt
: Qnil
;
1565 /* Make a copy, in case gmtime modifies the struct. */
1566 save_tm
= *decoded_time
;
1567 decoded_time
= gmtime (&time_spec
);
1568 if (decoded_time
== 0)
1569 list_args
[8] = Qnil
;
1571 XSETINT (list_args
[8], tm_diff (&save_tm
, decoded_time
));
1572 return Flist (9, list_args
);
1575 DEFUN ("encode-time", Fencode_time
, Sencode_time
, 6, MANY
, 0,
1576 "Convert SECOND, MINUTE, HOUR, DAY, MONTH, YEAR and ZONE to internal time.\n\
1577 This is the reverse operation of `decode-time', which see.\n\
1578 ZONE defaults to the current time zone rule. This can\n\
1579 be a string or t (as from `set-time-zone-rule'), or it can be a list\n\
1580 \(as from `current-time-zone') or an integer (as from `decode-time')\n\
1581 applied without consideration for daylight savings time.\n\
1583 You can pass more than 7 arguments; then the first six arguments\n\
1584 are used as SECOND through YEAR, and the *last* argument is used as ZONE.\n\
1585 The intervening arguments are ignored.\n\
1586 This feature lets (apply 'encode-time (decode-time ...)) work.\n\
1588 Out-of-range values for SEC, MINUTE, HOUR, DAY, or MONTH are allowed;\n\
1589 for example, a DAY of 0 means the day preceding the given month.\n\
1590 Year numbers less than 100 are treated just like other year numbers.\n\
1591 If you want them to stand for years in this century, you must do that yourself.")
1594 register Lisp_Object
*args
;
1598 Lisp_Object zone
= (nargs
> 6 ? args
[nargs
- 1] : Qnil
);
1600 CHECK_NUMBER (args
[0], 0); /* second */
1601 CHECK_NUMBER (args
[1], 1); /* minute */
1602 CHECK_NUMBER (args
[2], 2); /* hour */
1603 CHECK_NUMBER (args
[3], 3); /* day */
1604 CHECK_NUMBER (args
[4], 4); /* month */
1605 CHECK_NUMBER (args
[5], 5); /* year */
1607 tm
.tm_sec
= XINT (args
[0]);
1608 tm
.tm_min
= XINT (args
[1]);
1609 tm
.tm_hour
= XINT (args
[2]);
1610 tm
.tm_mday
= XINT (args
[3]);
1611 tm
.tm_mon
= XINT (args
[4]) - 1;
1612 tm
.tm_year
= XINT (args
[5]) - 1900;
1618 time
= mktime (&tm
);
1623 char **oldenv
= environ
, **newenv
;
1627 else if (STRINGP (zone
))
1628 tzstring
= (char *) XSTRING (zone
)->data
;
1629 else if (INTEGERP (zone
))
1631 int abszone
= abs (XINT (zone
));
1632 sprintf (tzbuf
, "XXX%s%d:%02d:%02d", "-" + (XINT (zone
) < 0),
1633 abszone
/ (60*60), (abszone
/60) % 60, abszone
% 60);
1637 error ("Invalid time zone specification");
1639 /* Set TZ before calling mktime; merely adjusting mktime's returned
1640 value doesn't suffice, since that would mishandle leap seconds. */
1641 set_time_zone_rule (tzstring
);
1643 time
= mktime (&tm
);
1645 /* Restore TZ to previous value. */
1649 #ifdef LOCALTIME_CACHE
1654 if (time
== (time_t) -1)
1655 error ("Specified time is not representable");
1657 return make_time (time
);
1660 DEFUN ("current-time-string", Fcurrent_time_string
, Scurrent_time_string
, 0, 1, 0,
1661 "Return the current time, as a human-readable string.\n\
1662 Programs can use this function to decode a time,\n\
1663 since the number of columns in each field is fixed.\n\
1664 The format is `Sun Sep 16 01:03:52 1973'.\n\
1665 However, see also the functions `decode-time' and `format-time-string'\n\
1666 which provide a much more powerful and general facility.\n\
1668 If an argument is given, it specifies a time to format\n\
1669 instead of the current time. The argument should have the form:\n\
1672 (HIGH LOW . IGNORED).\n\
1673 Thus, you can use times obtained from `current-time'\n\
1674 and from `file-attributes'.")
1676 Lisp_Object specified_time
;
1682 if (! lisp_time_argument (specified_time
, &value
, NULL
))
1684 tem
= (char *) ctime (&value
);
1686 strncpy (buf
, tem
, 24);
1689 return build_string (buf
);
1692 #define TM_YEAR_BASE 1900
1694 /* Yield A - B, measured in seconds.
1695 This function is copied from the GNU C Library. */
1700 /* Compute intervening leap days correctly even if year is negative.
1701 Take care to avoid int overflow in leap day calculations,
1702 but it's OK to assume that A and B are close to each other. */
1703 int a4
= (a
->tm_year
>> 2) + (TM_YEAR_BASE
>> 2) - ! (a
->tm_year
& 3);
1704 int b4
= (b
->tm_year
>> 2) + (TM_YEAR_BASE
>> 2) - ! (b
->tm_year
& 3);
1705 int a100
= a4
/ 25 - (a4
% 25 < 0);
1706 int b100
= b4
/ 25 - (b4
% 25 < 0);
1707 int a400
= a100
>> 2;
1708 int b400
= b100
>> 2;
1709 int intervening_leap_days
= (a4
- b4
) - (a100
- b100
) + (a400
- b400
);
1710 int years
= a
->tm_year
- b
->tm_year
;
1711 int days
= (365 * years
+ intervening_leap_days
1712 + (a
->tm_yday
- b
->tm_yday
));
1713 return (60 * (60 * (24 * days
+ (a
->tm_hour
- b
->tm_hour
))
1714 + (a
->tm_min
- b
->tm_min
))
1715 + (a
->tm_sec
- b
->tm_sec
));
1718 DEFUN ("current-time-zone", Fcurrent_time_zone
, Scurrent_time_zone
, 0, 1, 0,
1719 "Return the offset and name for the local time zone.\n\
1720 This returns a list of the form (OFFSET NAME).\n\
1721 OFFSET is an integer number of seconds ahead of UTC (east of Greenwich).\n\
1722 A negative value means west of Greenwich.\n\
1723 NAME is a string giving the name of the time zone.\n\
1724 If an argument is given, it specifies when the time zone offset is determined\n\
1725 instead of using the current time. The argument should have the form:\n\
1728 (HIGH LOW . IGNORED).\n\
1729 Thus, you can use times obtained from `current-time'\n\
1730 and from `file-attributes'.\n\
1732 Some operating systems cannot provide all this information to Emacs;\n\
1733 in this case, `current-time-zone' returns a list containing nil for\n\
1734 the data it can't find.")
1736 Lisp_Object specified_time
;
1742 if (lisp_time_argument (specified_time
, &value
, NULL
)
1743 && (t
= gmtime (&value
)) != 0
1744 && (gmt
= *t
, t
= localtime (&value
)) != 0)
1746 int offset
= tm_diff (t
, &gmt
);
1751 s
= (char *)t
->tm_zone
;
1752 #else /* not HAVE_TM_ZONE */
1754 if (t
->tm_isdst
== 0 || t
->tm_isdst
== 1)
1755 s
= tzname
[t
->tm_isdst
];
1757 #endif /* not HAVE_TM_ZONE */
1760 /* No local time zone name is available; use "+-NNNN" instead. */
1761 int am
= (offset
< 0 ? -offset
: offset
) / 60;
1762 sprintf (buf
, "%c%02d%02d", (offset
< 0 ? '-' : '+'), am
/60, am
%60);
1765 return Fcons (make_number (offset
), Fcons (build_string (s
), Qnil
));
1768 return Fmake_list (make_number (2), Qnil
);
1771 /* This holds the value of `environ' produced by the previous
1772 call to Fset_time_zone_rule, or 0 if Fset_time_zone_rule
1773 has never been called. */
1774 static char **environbuf
;
1776 DEFUN ("set-time-zone-rule", Fset_time_zone_rule
, Sset_time_zone_rule
, 1, 1, 0,
1777 "Set the local time zone using TZ, a string specifying a time zone rule.\n\
1778 If TZ is nil, use implementation-defined default time zone information.\n\
1779 If TZ is t, use Universal Time.")
1787 else if (EQ (tz
, Qt
))
1791 CHECK_STRING (tz
, 0);
1792 tzstring
= (char *) XSTRING (tz
)->data
;
1795 set_time_zone_rule (tzstring
);
1798 environbuf
= environ
;
1803 #ifdef LOCALTIME_CACHE
1805 /* These two values are known to load tz files in buggy implementations,
1806 i.e. Solaris 1 executables running under either Solaris 1 or Solaris 2.
1807 Their values shouldn't matter in non-buggy implementations.
1808 We don't use string literals for these strings,
1809 since if a string in the environment is in readonly
1810 storage, it runs afoul of bugs in SVR4 and Solaris 2.3.
1811 See Sun bugs 1113095 and 1114114, ``Timezone routines
1812 improperly modify environment''. */
1814 static char set_time_zone_rule_tz1
[] = "TZ=GMT+0";
1815 static char set_time_zone_rule_tz2
[] = "TZ=GMT+1";
1819 /* Set the local time zone rule to TZSTRING.
1820 This allocates memory into `environ', which it is the caller's
1821 responsibility to free. */
1824 set_time_zone_rule (tzstring
)
1828 char **from
, **to
, **newenv
;
1830 /* Make the ENVIRON vector longer with room for TZSTRING. */
1831 for (from
= environ
; *from
; from
++)
1833 envptrs
= from
- environ
+ 2;
1834 newenv
= to
= (char **) xmalloc (envptrs
* sizeof (char *)
1835 + (tzstring
? strlen (tzstring
) + 4 : 0));
1837 /* Add TZSTRING to the end of environ, as a value for TZ. */
1840 char *t
= (char *) (to
+ envptrs
);
1842 strcat (t
, tzstring
);
1846 /* Copy the old environ vector elements into NEWENV,
1847 but don't copy the TZ variable.
1848 So we have only one definition of TZ, which came from TZSTRING. */
1849 for (from
= environ
; *from
; from
++)
1850 if (strncmp (*from
, "TZ=", 3) != 0)
1856 /* If we do have a TZSTRING, NEWENV points to the vector slot where
1857 the TZ variable is stored. If we do not have a TZSTRING,
1858 TO points to the vector slot which has the terminating null. */
1860 #ifdef LOCALTIME_CACHE
1862 /* In SunOS 4.1.3_U1 and 4.1.4, if TZ has a value like
1863 "US/Pacific" that loads a tz file, then changes to a value like
1864 "XXX0" that does not load a tz file, and then changes back to
1865 its original value, the last change is (incorrectly) ignored.
1866 Also, if TZ changes twice in succession to values that do
1867 not load a tz file, tzset can dump core (see Sun bug#1225179).
1868 The following code works around these bugs. */
1872 /* Temporarily set TZ to a value that loads a tz file
1873 and that differs from tzstring. */
1875 *newenv
= (strcmp (tzstring
, set_time_zone_rule_tz1
+ 3) == 0
1876 ? set_time_zone_rule_tz2
: set_time_zone_rule_tz1
);
1882 /* The implied tzstring is unknown, so temporarily set TZ to
1883 two different values that each load a tz file. */
1884 *to
= set_time_zone_rule_tz1
;
1887 *to
= set_time_zone_rule_tz2
;
1892 /* Now TZ has the desired value, and tzset can be invoked safely. */
1899 /* Insert NARGS Lisp objects in the array ARGS by calling INSERT_FUNC
1900 (if a type of object is Lisp_Int) or INSERT_FROM_STRING_FUNC (if a
1901 type of object is Lisp_String). INHERIT is passed to
1902 INSERT_FROM_STRING_FUNC as the last argument. */
1905 general_insert_function (insert_func
, insert_from_string_func
,
1906 inherit
, nargs
, args
)
1907 void (*insert_func
) P_ ((unsigned char *, int));
1908 void (*insert_from_string_func
) P_ ((Lisp_Object
, int, int, int, int, int));
1910 register Lisp_Object
*args
;
1912 register int argnum
;
1913 register Lisp_Object val
;
1915 for (argnum
= 0; argnum
< nargs
; argnum
++)
1921 unsigned char str
[MAX_MULTIBYTE_LENGTH
];
1924 if (!NILP (current_buffer
->enable_multibyte_characters
))
1925 len
= CHAR_STRING (XFASTINT (val
), str
);
1928 str
[0] = (SINGLE_BYTE_CHAR_P (XINT (val
))
1930 : multibyte_char_to_unibyte (XINT (val
), Qnil
));
1933 (*insert_func
) (str
, len
);
1935 else if (STRINGP (val
))
1937 (*insert_from_string_func
) (val
, 0, 0,
1938 XSTRING (val
)->size
,
1939 STRING_BYTES (XSTRING (val
)),
1944 val
= wrong_type_argument (Qchar_or_string_p
, val
);
1958 /* Callers passing one argument to Finsert need not gcpro the
1959 argument "array", since the only element of the array will
1960 not be used after calling insert or insert_from_string, so
1961 we don't care if it gets trashed. */
1963 DEFUN ("insert", Finsert
, Sinsert
, 0, MANY
, 0,
1964 "Insert the arguments, either strings or characters, at point.\n\
1965 Point and before-insertion markers move forward to end up\n\
1966 after the inserted text.\n\
1967 Any other markers at the point of insertion remain before the text.\n\
1969 If the current buffer is multibyte, unibyte strings are converted\n\
1970 to multibyte for insertion (see `unibyte-char-to-multibyte').\n\
1971 If the current buffer is unibyte, multibyte strings are converted\n\
1972 to unibyte for insertion.")
1975 register Lisp_Object
*args
;
1977 general_insert_function (insert
, insert_from_string
, 0, nargs
, args
);
1981 DEFUN ("insert-and-inherit", Finsert_and_inherit
, Sinsert_and_inherit
,
1983 "Insert the arguments at point, inheriting properties from adjoining text.\n\
1984 Point and before-insertion markers move forward to end up\n\
1985 after the inserted text.\n\
1986 Any other markers at the point of insertion remain before the text.\n\
1988 If the current buffer is multibyte, unibyte strings are converted\n\
1989 to multibyte for insertion (see `unibyte-char-to-multibyte').\n\
1990 If the current buffer is unibyte, multibyte strings are converted\n\
1991 to unibyte for insertion.")
1994 register Lisp_Object
*args
;
1996 general_insert_function (insert_and_inherit
, insert_from_string
, 1,
2001 DEFUN ("insert-before-markers", Finsert_before_markers
, Sinsert_before_markers
, 0, MANY
, 0,
2002 "Insert strings or characters at point, relocating markers after the text.\n\
2003 Point and markers move forward to end up after the inserted text.\n\
2005 If the current buffer is multibyte, unibyte strings are converted\n\
2006 to multibyte for insertion (see `unibyte-char-to-multibyte').\n\
2007 If the current buffer is unibyte, multibyte strings are converted\n\
2008 to unibyte for insertion.")
2011 register Lisp_Object
*args
;
2013 general_insert_function (insert_before_markers
,
2014 insert_from_string_before_markers
, 0,
2019 DEFUN ("insert-before-markers-and-inherit", Finsert_and_inherit_before_markers
,
2020 Sinsert_and_inherit_before_markers
, 0, MANY
, 0,
2021 "Insert text at point, relocating markers and inheriting properties.\n\
2022 Point and markers move forward to end up after the inserted text.\n\
2024 If the current buffer is multibyte, unibyte strings are converted\n\
2025 to multibyte for insertion (see `unibyte-char-to-multibyte').\n\
2026 If the current buffer is unibyte, multibyte strings are converted\n\
2027 to unibyte for insertion.")
2030 register Lisp_Object
*args
;
2032 general_insert_function (insert_before_markers_and_inherit
,
2033 insert_from_string_before_markers
, 1,
2038 DEFUN ("insert-char", Finsert_char
, Sinsert_char
, 2, 3, 0,
2039 "Insert COUNT (second arg) copies of CHARACTER (first arg).\n\
2040 Both arguments are required.\n\
2041 Point, and before-insertion markers, are relocated as in the function `insert'.\n\
2042 The optional third arg INHERIT, if non-nil, says to inherit text properties\n\
2043 from adjoining text, if those properties are sticky.")
2044 (character
, count
, inherit
)
2045 Lisp_Object character
, count
, inherit
;
2047 register unsigned char *string
;
2048 register int strlen
;
2051 unsigned char str
[MAX_MULTIBYTE_LENGTH
];
2053 CHECK_NUMBER (character
, 0);
2054 CHECK_NUMBER (count
, 1);
2056 if (!NILP (current_buffer
->enable_multibyte_characters
))
2057 len
= CHAR_STRING (XFASTINT (character
), str
);
2059 str
[0] = XFASTINT (character
), len
= 1;
2060 n
= XINT (count
) * len
;
2063 strlen
= min (n
, 256 * len
);
2064 string
= (unsigned char *) alloca (strlen
);
2065 for (i
= 0; i
< strlen
; i
++)
2066 string
[i
] = str
[i
% len
];
2070 if (!NILP (inherit
))
2071 insert_and_inherit (string
, strlen
);
2073 insert (string
, strlen
);
2078 if (!NILP (inherit
))
2079 insert_and_inherit (string
, n
);
2087 /* Making strings from buffer contents. */
2089 /* Return a Lisp_String containing the text of the current buffer from
2090 START to END. If text properties are in use and the current buffer
2091 has properties in the range specified, the resulting string will also
2092 have them, if PROPS is nonzero.
2094 We don't want to use plain old make_string here, because it calls
2095 make_uninit_string, which can cause the buffer arena to be
2096 compacted. make_string has no way of knowing that the data has
2097 been moved, and thus copies the wrong data into the string. This
2098 doesn't effect most of the other users of make_string, so it should
2099 be left as is. But we should use this function when conjuring
2100 buffer substrings. */
2103 make_buffer_string (start
, end
, props
)
2107 int start_byte
= CHAR_TO_BYTE (start
);
2108 int end_byte
= CHAR_TO_BYTE (end
);
2110 return make_buffer_string_both (start
, start_byte
, end
, end_byte
, props
);
2113 /* Return a Lisp_String containing the text of the current buffer from
2114 START / START_BYTE to END / END_BYTE.
2116 If text properties are in use and the current buffer
2117 has properties in the range specified, the resulting string will also
2118 have them, if PROPS is nonzero.
2120 We don't want to use plain old make_string here, because it calls
2121 make_uninit_string, which can cause the buffer arena to be
2122 compacted. make_string has no way of knowing that the data has
2123 been moved, and thus copies the wrong data into the string. This
2124 doesn't effect most of the other users of make_string, so it should
2125 be left as is. But we should use this function when conjuring
2126 buffer substrings. */
2129 make_buffer_string_both (start
, start_byte
, end
, end_byte
, props
)
2130 int start
, start_byte
, end
, end_byte
;
2133 Lisp_Object result
, tem
, tem1
;
2135 if (start
< GPT
&& GPT
< end
)
2138 if (! NILP (current_buffer
->enable_multibyte_characters
))
2139 result
= make_uninit_multibyte_string (end
- start
, end_byte
- start_byte
);
2141 result
= make_uninit_string (end
- start
);
2142 bcopy (BYTE_POS_ADDR (start_byte
), XSTRING (result
)->data
,
2143 end_byte
- start_byte
);
2145 /* If desired, update and copy the text properties. */
2148 update_buffer_properties (start
, end
);
2150 tem
= Fnext_property_change (make_number (start
), Qnil
, make_number (end
));
2151 tem1
= Ftext_properties_at (make_number (start
), Qnil
);
2153 if (XINT (tem
) != end
|| !NILP (tem1
))
2154 copy_intervals_to_string (result
, current_buffer
, start
,
2161 /* Call Vbuffer_access_fontify_functions for the range START ... END
2162 in the current buffer, if necessary. */
2165 update_buffer_properties (start
, end
)
2168 /* If this buffer has some access functions,
2169 call them, specifying the range of the buffer being accessed. */
2170 if (!NILP (Vbuffer_access_fontify_functions
))
2172 Lisp_Object args
[3];
2175 args
[0] = Qbuffer_access_fontify_functions
;
2176 XSETINT (args
[1], start
);
2177 XSETINT (args
[2], end
);
2179 /* But don't call them if we can tell that the work
2180 has already been done. */
2181 if (!NILP (Vbuffer_access_fontified_property
))
2183 tem
= Ftext_property_any (args
[1], args
[2],
2184 Vbuffer_access_fontified_property
,
2187 Frun_hook_with_args (3, args
);
2190 Frun_hook_with_args (3, args
);
2194 DEFUN ("buffer-substring", Fbuffer_substring
, Sbuffer_substring
, 2, 2, 0,
2195 "Return the contents of part of the current buffer as a string.\n\
2196 The two arguments START and END are character positions;\n\
2197 they can be in either order.\n\
2198 The string returned is multibyte if the buffer is multibyte.\n\
2200 This function copies the text properties of that part of the buffer\n\
2201 into the result string; if you don't want the text properties,\n\
2202 use `buffer-substring-no-properties' instead.")
2204 Lisp_Object start
, end
;
2208 validate_region (&start
, &end
);
2212 return make_buffer_string (b
, e
, 1);
2215 DEFUN ("buffer-substring-no-properties", Fbuffer_substring_no_properties
,
2216 Sbuffer_substring_no_properties
, 2, 2, 0,
2217 "Return the characters of part of the buffer, without the text properties.\n\
2218 The two arguments START and END are character positions;\n\
2219 they can be in either order.")
2221 Lisp_Object start
, end
;
2225 validate_region (&start
, &end
);
2229 return make_buffer_string (b
, e
, 0);
2232 DEFUN ("buffer-string", Fbuffer_string
, Sbuffer_string
, 0, 0, 0,
2233 "Return the contents of the current buffer as a string.\n\
2234 If narrowing is in effect, this function returns only the visible part\n\
2238 return make_buffer_string (BEGV
, ZV
, 1);
2241 DEFUN ("insert-buffer-substring", Finsert_buffer_substring
, Sinsert_buffer_substring
,
2243 "Insert before point a substring of the contents of buffer BUFFER.\n\
2244 BUFFER may be a buffer or a buffer name.\n\
2245 Arguments START and END are character numbers specifying the substring.\n\
2246 They default to the beginning and the end of BUFFER.")
2248 Lisp_Object buf
, start
, end
;
2250 register int b
, e
, temp
;
2251 register struct buffer
*bp
, *obuf
;
2254 buffer
= Fget_buffer (buf
);
2257 bp
= XBUFFER (buffer
);
2258 if (NILP (bp
->name
))
2259 error ("Selecting deleted buffer");
2265 CHECK_NUMBER_COERCE_MARKER (start
, 0);
2272 CHECK_NUMBER_COERCE_MARKER (end
, 1);
2277 temp
= b
, b
= e
, e
= temp
;
2279 if (!(BUF_BEGV (bp
) <= b
&& e
<= BUF_ZV (bp
)))
2280 args_out_of_range (start
, end
);
2282 obuf
= current_buffer
;
2283 set_buffer_internal_1 (bp
);
2284 update_buffer_properties (b
, e
);
2285 set_buffer_internal_1 (obuf
);
2287 insert_from_buffer (bp
, b
, e
- b
, 0);
2291 DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings
, Scompare_buffer_substrings
,
2293 "Compare two substrings of two buffers; return result as number.\n\
2294 the value is -N if first string is less after N-1 chars,\n\
2295 +N if first string is greater after N-1 chars, or 0 if strings match.\n\
2296 Each substring is represented as three arguments: BUFFER, START and END.\n\
2297 That makes six args in all, three for each substring.\n\n\
2298 The value of `case-fold-search' in the current buffer\n\
2299 determines whether case is significant or ignored.")
2300 (buffer1
, start1
, end1
, buffer2
, start2
, end2
)
2301 Lisp_Object buffer1
, start1
, end1
, buffer2
, start2
, end2
;
2303 register int begp1
, endp1
, begp2
, endp2
, temp
;
2304 register struct buffer
*bp1
, *bp2
;
2305 register Lisp_Object
*trt
2306 = (!NILP (current_buffer
->case_fold_search
)
2307 ? XCHAR_TABLE (current_buffer
->case_canon_table
)->contents
: 0);
2309 int i1
, i2
, i1_byte
, i2_byte
;
2311 /* Find the first buffer and its substring. */
2314 bp1
= current_buffer
;
2318 buf1
= Fget_buffer (buffer1
);
2321 bp1
= XBUFFER (buf1
);
2322 if (NILP (bp1
->name
))
2323 error ("Selecting deleted buffer");
2327 begp1
= BUF_BEGV (bp1
);
2330 CHECK_NUMBER_COERCE_MARKER (start1
, 1);
2331 begp1
= XINT (start1
);
2334 endp1
= BUF_ZV (bp1
);
2337 CHECK_NUMBER_COERCE_MARKER (end1
, 2);
2338 endp1
= XINT (end1
);
2342 temp
= begp1
, begp1
= endp1
, endp1
= temp
;
2344 if (!(BUF_BEGV (bp1
) <= begp1
2346 && endp1
<= BUF_ZV (bp1
)))
2347 args_out_of_range (start1
, end1
);
2349 /* Likewise for second substring. */
2352 bp2
= current_buffer
;
2356 buf2
= Fget_buffer (buffer2
);
2359 bp2
= XBUFFER (buf2
);
2360 if (NILP (bp2
->name
))
2361 error ("Selecting deleted buffer");
2365 begp2
= BUF_BEGV (bp2
);
2368 CHECK_NUMBER_COERCE_MARKER (start2
, 4);
2369 begp2
= XINT (start2
);
2372 endp2
= BUF_ZV (bp2
);
2375 CHECK_NUMBER_COERCE_MARKER (end2
, 5);
2376 endp2
= XINT (end2
);
2380 temp
= begp2
, begp2
= endp2
, endp2
= temp
;
2382 if (!(BUF_BEGV (bp2
) <= begp2
2384 && endp2
<= BUF_ZV (bp2
)))
2385 args_out_of_range (start2
, end2
);
2389 i1_byte
= buf_charpos_to_bytepos (bp1
, i1
);
2390 i2_byte
= buf_charpos_to_bytepos (bp2
, i2
);
2392 while (i1
< endp1
&& i2
< endp2
)
2394 /* When we find a mismatch, we must compare the
2395 characters, not just the bytes. */
2398 if (! NILP (bp1
->enable_multibyte_characters
))
2400 c1
= BUF_FETCH_MULTIBYTE_CHAR (bp1
, i1_byte
);
2401 BUF_INC_POS (bp1
, i1_byte
);
2406 c1
= BUF_FETCH_BYTE (bp1
, i1
);
2407 c1
= unibyte_char_to_multibyte (c1
);
2411 if (! NILP (bp2
->enable_multibyte_characters
))
2413 c2
= BUF_FETCH_MULTIBYTE_CHAR (bp2
, i2_byte
);
2414 BUF_INC_POS (bp2
, i2_byte
);
2419 c2
= BUF_FETCH_BYTE (bp2
, i2
);
2420 c2
= unibyte_char_to_multibyte (c2
);
2426 c1
= XINT (trt
[c1
]);
2427 c2
= XINT (trt
[c2
]);
2430 return make_number (- 1 - chars
);
2432 return make_number (chars
+ 1);
2437 /* The strings match as far as they go.
2438 If one is shorter, that one is less. */
2439 if (chars
< endp1
- begp1
)
2440 return make_number (chars
+ 1);
2441 else if (chars
< endp2
- begp2
)
2442 return make_number (- chars
- 1);
2444 /* Same length too => they are equal. */
2445 return make_number (0);
2449 subst_char_in_region_unwind (arg
)
2452 return current_buffer
->undo_list
= arg
;
2456 subst_char_in_region_unwind_1 (arg
)
2459 return current_buffer
->filename
= arg
;
2462 DEFUN ("subst-char-in-region", Fsubst_char_in_region
,
2463 Ssubst_char_in_region
, 4, 5, 0,
2464 "From START to END, replace FROMCHAR with TOCHAR each time it occurs.\n\
2465 If optional arg NOUNDO is non-nil, don't record this change for undo\n\
2466 and don't mark the buffer as really changed.\n\
2467 Both characters must have the same length of multi-byte form.")
2468 (start
, end
, fromchar
, tochar
, noundo
)
2469 Lisp_Object start
, end
, fromchar
, tochar
, noundo
;
2471 register int pos
, pos_byte
, stop
, i
, len
, end_byte
;
2473 unsigned char fromstr
[MAX_MULTIBYTE_LENGTH
], tostr
[MAX_MULTIBYTE_LENGTH
];
2475 int count
= specpdl_ptr
- specpdl
;
2476 #define COMBINING_NO 0
2477 #define COMBINING_BEFORE 1
2478 #define COMBINING_AFTER 2
2479 #define COMBINING_BOTH (COMBINING_BEFORE | COMBINING_AFTER)
2480 int maybe_byte_combining
= COMBINING_NO
;
2481 int last_changed
= 0;
2482 int multibyte_p
= !NILP (current_buffer
->enable_multibyte_characters
);
2484 validate_region (&start
, &end
);
2485 CHECK_NUMBER (fromchar
, 2);
2486 CHECK_NUMBER (tochar
, 3);
2490 len
= CHAR_STRING (XFASTINT (fromchar
), fromstr
);
2491 if (CHAR_STRING (XFASTINT (tochar
), tostr
) != len
)
2492 error ("Characters in subst-char-in-region have different byte-lengths");
2493 if (!ASCII_BYTE_P (*tostr
))
2495 /* If *TOSTR is in the range 0x80..0x9F and TOCHAR is not a
2496 complete multibyte character, it may be combined with the
2497 after bytes. If it is in the range 0xA0..0xFF, it may be
2498 combined with the before and after bytes. */
2499 if (!CHAR_HEAD_P (*tostr
))
2500 maybe_byte_combining
= COMBINING_BOTH
;
2501 else if (BYTES_BY_CHAR_HEAD (*tostr
) > len
)
2502 maybe_byte_combining
= COMBINING_AFTER
;
2508 fromstr
[0] = XFASTINT (fromchar
);
2509 tostr
[0] = XFASTINT (tochar
);
2513 pos_byte
= CHAR_TO_BYTE (pos
);
2514 stop
= CHAR_TO_BYTE (XINT (end
));
2517 /* If we don't want undo, turn off putting stuff on the list.
2518 That's faster than getting rid of things,
2519 and it prevents even the entry for a first change.
2520 Also inhibit locking the file. */
2523 record_unwind_protect (subst_char_in_region_unwind
,
2524 current_buffer
->undo_list
);
2525 current_buffer
->undo_list
= Qt
;
2526 /* Don't do file-locking. */
2527 record_unwind_protect (subst_char_in_region_unwind_1
,
2528 current_buffer
->filename
);
2529 current_buffer
->filename
= Qnil
;
2532 if (pos_byte
< GPT_BYTE
)
2533 stop
= min (stop
, GPT_BYTE
);
2536 int pos_byte_next
= pos_byte
;
2538 if (pos_byte
>= stop
)
2540 if (pos_byte
>= end_byte
) break;
2543 p
= BYTE_POS_ADDR (pos_byte
);
2545 INC_POS (pos_byte_next
);
2548 if (pos_byte_next
- pos_byte
== len
2549 && p
[0] == fromstr
[0]
2551 || (p
[1] == fromstr
[1]
2552 && (len
== 2 || (p
[2] == fromstr
[2]
2553 && (len
== 3 || p
[3] == fromstr
[3]))))))
2558 modify_region (current_buffer
, changed
, XINT (end
));
2560 if (! NILP (noundo
))
2562 if (MODIFF
- 1 == SAVE_MODIFF
)
2564 if (MODIFF
- 1 == current_buffer
->auto_save_modified
)
2565 current_buffer
->auto_save_modified
++;
2569 /* Take care of the case where the new character
2570 combines with neighboring bytes. */
2571 if (maybe_byte_combining
2572 && (maybe_byte_combining
== COMBINING_AFTER
2573 ? (pos_byte_next
< Z_BYTE
2574 && ! CHAR_HEAD_P (FETCH_BYTE (pos_byte_next
)))
2575 : ((pos_byte_next
< Z_BYTE
2576 && ! CHAR_HEAD_P (FETCH_BYTE (pos_byte_next
)))
2577 || (pos_byte
> BEG_BYTE
2578 && ! ASCII_BYTE_P (FETCH_BYTE (pos_byte
- 1))))))
2580 Lisp_Object tem
, string
;
2582 struct gcpro gcpro1
;
2584 tem
= current_buffer
->undo_list
;
2587 /* Make a multibyte string containing this single character. */
2588 string
= make_multibyte_string (tostr
, 1, len
);
2589 /* replace_range is less efficient, because it moves the gap,
2590 but it handles combining correctly. */
2591 replace_range (pos
, pos
+ 1, string
,
2593 pos_byte_next
= CHAR_TO_BYTE (pos
);
2594 if (pos_byte_next
> pos_byte
)
2595 /* Before combining happened. We should not increment
2596 POS. So, to cancel the later increment of POS,
2600 INC_POS (pos_byte_next
);
2602 if (! NILP (noundo
))
2603 current_buffer
->undo_list
= tem
;
2610 record_change (pos
, 1);
2611 for (i
= 0; i
< len
; i
++) *p
++ = tostr
[i
];
2613 last_changed
= pos
+ 1;
2615 pos_byte
= pos_byte_next
;
2621 signal_after_change (changed
,
2622 last_changed
- changed
, last_changed
- changed
);
2623 update_compositions (changed
, last_changed
, CHECK_ALL
);
2626 unbind_to (count
, Qnil
);
2630 DEFUN ("translate-region", Ftranslate_region
, Stranslate_region
, 3, 3, 0,
2631 "From START to END, translate characters according to TABLE.\n\
2632 TABLE is a string; the Nth character in it is the mapping\n\
2633 for the character with code N.\n\
2634 This function does not alter multibyte characters.\n\
2635 It returns the number of characters changed.")
2639 register Lisp_Object table
;
2641 register int pos_byte
, stop
; /* Limits of the region. */
2642 register unsigned char *tt
; /* Trans table. */
2643 register int nc
; /* New character. */
2644 int cnt
; /* Number of changes made. */
2645 int size
; /* Size of translate table. */
2647 int multibyte
= !NILP (current_buffer
->enable_multibyte_characters
);
2649 validate_region (&start
, &end
);
2650 CHECK_STRING (table
, 2);
2652 size
= STRING_BYTES (XSTRING (table
));
2653 tt
= XSTRING (table
)->data
;
2655 pos_byte
= CHAR_TO_BYTE (XINT (start
));
2656 stop
= CHAR_TO_BYTE (XINT (end
));
2657 modify_region (current_buffer
, XINT (start
), XINT (end
));
2661 for (; pos_byte
< stop
; )
2663 register unsigned char *p
= BYTE_POS_ADDR (pos_byte
);
2669 oc
= STRING_CHAR_AND_LENGTH (p
, stop
- pos_byte
, len
);
2672 pos_byte_next
= pos_byte
+ len
;
2673 if (oc
< size
&& len
== 1)
2678 /* Take care of the case where the new character
2679 combines with neighboring bytes. */
2680 if (!ASCII_BYTE_P (nc
)
2681 && (CHAR_HEAD_P (nc
)
2682 ? ! CHAR_HEAD_P (FETCH_BYTE (pos_byte
+ 1))
2683 : (pos_byte
> BEG_BYTE
2684 && ! ASCII_BYTE_P (FETCH_BYTE (pos_byte
- 1)))))
2688 string
= make_multibyte_string (tt
+ oc
, 1, 1);
2689 /* This is less efficient, because it moves the gap,
2690 but it handles combining correctly. */
2691 replace_range (pos
, pos
+ 1, string
,
2693 pos_byte_next
= CHAR_TO_BYTE (pos
);
2694 if (pos_byte_next
> pos_byte
)
2695 /* Before combining happened. We should not
2696 increment POS. So, to cancel the later
2697 increment of POS, we decrease it now. */
2700 INC_POS (pos_byte_next
);
2704 record_change (pos
, 1);
2706 signal_after_change (pos
, 1, 1);
2707 update_compositions (pos
, pos
+ 1, CHECK_BORDER
);
2712 pos_byte
= pos_byte_next
;
2716 return make_number (cnt
);
2719 DEFUN ("delete-region", Fdelete_region
, Sdelete_region
, 2, 2, "r",
2720 "Delete the text between point and mark.\n\
2721 When called from a program, expects two arguments,\n\
2722 positions (integers or markers) specifying the stretch to be deleted.")
2724 Lisp_Object start
, end
;
2726 validate_region (&start
, &end
);
2727 del_range (XINT (start
), XINT (end
));
2731 DEFUN ("delete-and-extract-region", Fdelete_and_extract_region
,
2732 Sdelete_and_extract_region
, 2, 2, 0,
2733 "Delete the text between START and END and return it.")
2735 Lisp_Object start
, end
;
2737 validate_region (&start
, &end
);
2738 return del_range_1 (XINT (start
), XINT (end
), 1, 1);
2741 DEFUN ("widen", Fwiden
, Swiden
, 0, 0, "",
2742 "Remove restrictions (narrowing) from current buffer.\n\
2743 This allows the buffer's full text to be seen and edited.")
2746 if (BEG
!= BEGV
|| Z
!= ZV
)
2747 current_buffer
->clip_changed
= 1;
2749 BEGV_BYTE
= BEG_BYTE
;
2750 SET_BUF_ZV_BOTH (current_buffer
, Z
, Z_BYTE
);
2751 /* Changing the buffer bounds invalidates any recorded current column. */
2752 invalidate_current_column ();
2756 DEFUN ("narrow-to-region", Fnarrow_to_region
, Snarrow_to_region
, 2, 2, "r",
2757 "Restrict editing in this buffer to the current region.\n\
2758 The rest of the text becomes temporarily invisible and untouchable\n\
2759 but is not deleted; if you save the buffer in a file, the invisible\n\
2760 text is included in the file. \\[widen] makes all visible again.\n\
2761 See also `save-restriction'.\n\
2763 When calling from a program, pass two arguments; positions (integers\n\
2764 or markers) bounding the text that should remain visible.")
2766 register Lisp_Object start
, end
;
2768 CHECK_NUMBER_COERCE_MARKER (start
, 0);
2769 CHECK_NUMBER_COERCE_MARKER (end
, 1);
2771 if (XINT (start
) > XINT (end
))
2774 tem
= start
; start
= end
; end
= tem
;
2777 if (!(BEG
<= XINT (start
) && XINT (start
) <= XINT (end
) && XINT (end
) <= Z
))
2778 args_out_of_range (start
, end
);
2780 if (BEGV
!= XFASTINT (start
) || ZV
!= XFASTINT (end
))
2781 current_buffer
->clip_changed
= 1;
2783 SET_BUF_BEGV (current_buffer
, XFASTINT (start
));
2784 SET_BUF_ZV (current_buffer
, XFASTINT (end
));
2785 if (PT
< XFASTINT (start
))
2786 SET_PT (XFASTINT (start
));
2787 if (PT
> XFASTINT (end
))
2788 SET_PT (XFASTINT (end
));
2789 /* Changing the buffer bounds invalidates any recorded current column. */
2790 invalidate_current_column ();
2795 save_restriction_save ()
2797 if (BEGV
== BEG
&& ZV
== Z
)
2798 /* The common case that the buffer isn't narrowed.
2799 We return just the buffer object, which save_restriction_restore
2800 recognizes as meaning `no restriction'. */
2801 return Fcurrent_buffer ();
2803 /* We have to save a restriction, so return a pair of markers, one
2804 for the beginning and one for the end. */
2806 Lisp_Object beg
, end
;
2808 beg
= buildmark (BEGV
, BEGV_BYTE
);
2809 end
= buildmark (ZV
, ZV_BYTE
);
2811 /* END must move forward if text is inserted at its exact location. */
2812 XMARKER(end
)->insertion_type
= 1;
2814 return Fcons (beg
, end
);
2819 save_restriction_restore (data
)
2823 /* A pair of marks bounding a saved restriction. */
2825 struct Lisp_Marker
*beg
= XMARKER (XCAR (data
));
2826 struct Lisp_Marker
*end
= XMARKER (XCDR (data
));
2827 struct buffer
*buf
= beg
->buffer
; /* END should have the same buffer. */
2829 if (beg
->charpos
!= BUF_BEGV(buf
) || end
->charpos
!= BUF_ZV(buf
))
2830 /* The restriction has changed from the saved one, so restore
2831 the saved restriction. */
2833 int pt
= BUF_PT (buf
);
2835 SET_BUF_BEGV_BOTH (buf
, beg
->charpos
, beg
->bytepos
);
2836 SET_BUF_ZV_BOTH (buf
, end
->charpos
, end
->bytepos
);
2838 if (pt
< beg
->charpos
|| pt
> end
->charpos
)
2839 /* The point is outside the new visible range, move it inside. */
2840 SET_BUF_PT_BOTH (buf
,
2841 clip_to_bounds (beg
->charpos
, pt
, end
->charpos
),
2842 clip_to_bounds (beg
->bytepos
, BUF_PT_BYTE(buf
),
2845 buf
->clip_changed
= 1; /* Remember that the narrowing changed. */
2849 /* A buffer, which means that there was no old restriction. */
2851 struct buffer
*buf
= XBUFFER (data
);
2853 if (BUF_BEGV(buf
) != BUF_BEG(buf
) || BUF_ZV(buf
) != BUF_Z(buf
))
2854 /* The buffer has been narrowed, get rid of the narrowing. */
2856 SET_BUF_BEGV_BOTH (buf
, BUF_BEG(buf
), BUF_BEG_BYTE(buf
));
2857 SET_BUF_ZV_BOTH (buf
, BUF_Z(buf
), BUF_Z_BYTE(buf
));
2859 buf
->clip_changed
= 1; /* Remember that the narrowing changed. */
2866 DEFUN ("save-restriction", Fsave_restriction
, Ssave_restriction
, 0, UNEVALLED
, 0,
2867 "Execute BODY, saving and restoring current buffer's restrictions.\n\
2868 The buffer's restrictions make parts of the beginning and end invisible.\n\
2869 \(They are set up with `narrow-to-region' and eliminated with `widen'.)\n\
2870 This special form, `save-restriction', saves the current buffer's restrictions\n\
2871 when it is entered, and restores them when it is exited.\n\
2872 So any `narrow-to-region' within BODY lasts only until the end of the form.\n\
2873 The old restrictions settings are restored\n\
2874 even in case of abnormal exit (throw or error).\n\
2876 The value returned is the value of the last form in BODY.\n\
2878 Note: if you are using both `save-excursion' and `save-restriction',\n\
2879 use `save-excursion' outermost:\n\
2880 (save-excursion (save-restriction ...))")
2884 register Lisp_Object val
;
2885 int count
= specpdl_ptr
- specpdl
;
2887 record_unwind_protect (save_restriction_restore
, save_restriction_save ());
2888 val
= Fprogn (body
);
2889 return unbind_to (count
, val
);
2894 /* Buffer for the most recent text displayed by Fmessage. */
2895 static char *message_text
;
2897 /* Allocated length of that buffer. */
2898 static int message_length
;
2900 #endif /* not HAVE_MENUS */
2902 DEFUN ("message", Fmessage
, Smessage
, 1, MANY
, 0,
2903 "Print a one-line message at the bottom of the screen.\n\
2904 The first argument is a format control string, and the rest are data\n\
2905 to be formatted under control of the string. See `format' for details.\n\
2907 If the first argument is nil, clear any existing message; let the\n\
2908 minibuffer contents show.")
2920 register Lisp_Object val
;
2921 val
= Fformat (nargs
, args
);
2922 message3 (val
, STRING_BYTES (XSTRING (val
)), STRING_MULTIBYTE (val
));
2927 DEFUN ("message-box", Fmessage_box
, Smessage_box
, 1, MANY
, 0,
2928 "Display a message, in a dialog box if possible.\n\
2929 If a dialog box is not available, use the echo area.\n\
2930 The first argument is a format control string, and the rest are data\n\
2931 to be formatted under control of the string. See `format' for details.\n\
2933 If the first argument is nil, clear any existing message; let the\n\
2934 minibuffer contents show.")
2946 register Lisp_Object val
;
2947 val
= Fformat (nargs
, args
);
2950 Lisp_Object pane
, menu
, obj
;
2951 struct gcpro gcpro1
;
2952 pane
= Fcons (Fcons (build_string ("OK"), Qt
), Qnil
);
2954 menu
= Fcons (val
, pane
);
2955 obj
= Fx_popup_dialog (Qt
, menu
);
2959 #else /* not HAVE_MENUS */
2960 /* Copy the data so that it won't move when we GC. */
2963 message_text
= (char *)xmalloc (80);
2964 message_length
= 80;
2966 if (STRING_BYTES (XSTRING (val
)) > message_length
)
2968 message_length
= STRING_BYTES (XSTRING (val
));
2969 message_text
= (char *)xrealloc (message_text
, message_length
);
2971 bcopy (XSTRING (val
)->data
, message_text
, STRING_BYTES (XSTRING (val
)));
2972 message2 (message_text
, STRING_BYTES (XSTRING (val
)),
2973 STRING_MULTIBYTE (val
));
2975 #endif /* not HAVE_MENUS */
2979 extern Lisp_Object last_nonmenu_event
;
2982 DEFUN ("message-or-box", Fmessage_or_box
, Smessage_or_box
, 1, MANY
, 0,
2983 "Display a message in a dialog box or in the echo area.\n\
2984 If this command was invoked with the mouse, use a dialog box if\n\
2985 `use-dialog-box' is non-nil.\n\
2986 Otherwise, use the echo area.\n\
2987 The first argument is a format control string, and the rest are data\n\
2988 to be formatted under control of the string. See `format' for details.\n\
2990 If the first argument is nil, clear any existing message; let the\n\
2991 minibuffer contents show.")
2997 if ((NILP (last_nonmenu_event
) || CONSP (last_nonmenu_event
))
2999 return Fmessage_box (nargs
, args
);
3001 return Fmessage (nargs
, args
);
3004 DEFUN ("current-message", Fcurrent_message
, Scurrent_message
, 0, 0, 0,
3005 "Return the string currently displayed in the echo area, or nil if none.")
3008 return current_message ();
3012 DEFUN ("propertize", Fpropertize
, Spropertize
, 3, MANY
, 0,
3013 "Return a copy of STRING with text properties added.\n\
3014 First argument is the string to copy.\n\
3015 Remaining arguments form a sequence of PROPERTY VALUE pairs for text\n\
3016 properties to add to the result ")
3021 Lisp_Object properties
, string
;
3022 struct gcpro gcpro1
, gcpro2
;
3025 /* Number of args must be odd. */
3026 if ((nargs
& 1) == 0 || nargs
< 3)
3027 error ("Wrong number of arguments");
3029 properties
= string
= Qnil
;
3030 GCPRO2 (properties
, string
);
3032 /* First argument must be a string. */
3033 CHECK_STRING (args
[0], 0);
3034 string
= Fcopy_sequence (args
[0]);
3036 for (i
= 1; i
< nargs
; i
+= 2)
3038 CHECK_SYMBOL (args
[i
], i
);
3039 properties
= Fcons (args
[i
], Fcons (args
[i
+ 1], properties
));
3042 Fadd_text_properties (make_number (0),
3043 make_number (XSTRING (string
)->size
),
3044 properties
, string
);
3045 RETURN_UNGCPRO (string
);
3049 /* Number of bytes that STRING will occupy when put into the result.
3050 MULTIBYTE is nonzero if the result should be multibyte. */
3052 #define CONVERTED_BYTE_SIZE(MULTIBYTE, STRING) \
3053 (((MULTIBYTE) && ! STRING_MULTIBYTE (STRING)) \
3054 ? count_size_as_multibyte (XSTRING (STRING)->data, \
3055 STRING_BYTES (XSTRING (STRING))) \
3056 : STRING_BYTES (XSTRING (STRING)))
3058 DEFUN ("format", Fformat
, Sformat
, 1, MANY
, 0,
3059 "Format a string out of a control-string and arguments.\n\
3060 The first argument is a control string.\n\
3061 The other arguments are substituted into it to make the result, a string.\n\
3062 It may contain %-sequences meaning to substitute the next argument.\n\
3063 %s means print a string argument. Actually, prints any object, with `princ'.\n\
3064 %d means print as number in decimal (%o octal, %x hex).\n\
3065 %X is like %x, but uses upper case.\n\
3066 %e means print a number in exponential notation.\n\
3067 %f means print a number in decimal-point notation.\n\
3068 %g means print a number in exponential notation\n\
3069 or decimal-point notation, whichever uses fewer characters.\n\
3070 %c means print a number as a single character.\n\
3071 %S means print any object as an s-expression (using `prin1').\n\
3072 The argument used for %d, %o, %x, %e, %f, %g or %c must be a number.\n\
3073 Use %% to put a single % into the output.")
3076 register Lisp_Object
*args
;
3078 register int n
; /* The number of the next arg to substitute */
3079 register int total
; /* An estimate of the final length */
3081 register unsigned char *format
, *end
;
3083 /* Nonzero if the output should be a multibyte string,
3084 which is true if any of the inputs is one. */
3086 /* When we make a multibyte string, we must pay attention to the
3087 byte combining problem, i.e., a byte may be combined with a
3088 multibyte charcter of the previous string. This flag tells if we
3089 must consider such a situation or not. */
3090 int maybe_combine_byte
;
3091 unsigned char *this_format
;
3099 /* It should not be necessary to GCPRO ARGS, because
3100 the caller in the interpreter should take care of that. */
3102 /* Try to determine whether the result should be multibyte.
3103 This is not always right; sometimes the result needs to be multibyte
3104 because of an object that we will pass through prin1,
3105 and in that case, we won't know it here. */
3106 for (n
= 0; n
< nargs
; n
++)
3107 if (STRINGP (args
[n
]) && STRING_MULTIBYTE (args
[n
]))
3110 CHECK_STRING (args
[0], 0);
3112 /* If we start out planning a unibyte result,
3113 and later find it has to be multibyte, we jump back to retry. */
3116 format
= XSTRING (args
[0])->data
;
3117 end
= format
+ STRING_BYTES (XSTRING (args
[0]));
3120 /* Make room in result for all the non-%-codes in the control string. */
3121 total
= 5 + CONVERTED_BYTE_SIZE (multibyte
, args
[0]);
3123 /* Add to TOTAL enough space to hold the converted arguments. */
3126 while (format
!= end
)
3127 if (*format
++ == '%')
3130 unsigned char *this_format_start
= format
- 1;
3131 int field_width
, precision
;
3133 /* General format specifications look like
3135 '%' [flags] [field-width] [precision] format
3140 field-width ::= [0-9]+
3141 precision ::= '.' [0-9]*
3143 If a field-width is specified, it specifies to which width
3144 the output should be padded with blanks, iff the output
3145 string is shorter than field-width.
3147 if precision is specified, it specifies the number of
3148 digits to print after the '.' for floats, or the max.
3149 number of chars to print from a string. */
3151 precision
= field_width
= 0;
3153 while (index ("-*# 0", *format
))
3156 if (*format
>= '0' && *format
<= '9')
3158 for (field_width
= 0; *format
>= '0' && *format
<= '9'; ++format
)
3159 field_width
= 10 * field_width
+ *format
- '0';
3165 for (precision
= 0; *format
>= '0' && *format
<= '9'; ++format
)
3166 precision
= 10 * precision
+ *format
- '0';
3169 if (format
- this_format_start
+ 1 > longest_format
)
3170 longest_format
= format
- this_format_start
+ 1;
3173 error ("Format string ends in middle of format specifier");
3176 else if (++n
>= nargs
)
3177 error ("Not enough arguments for format string");
3178 else if (*format
== 'S')
3180 /* For `S', prin1 the argument and then treat like a string. */
3181 register Lisp_Object tem
;
3182 tem
= Fprin1_to_string (args
[n
], Qnil
);
3183 if (STRING_MULTIBYTE (tem
) && ! multibyte
)
3191 else if (SYMBOLP (args
[n
]))
3193 /* Use a temp var to avoid problems when ENABLE_CHECKING
3195 struct Lisp_String
*t
= XSYMBOL (args
[n
])->name
;
3196 XSETSTRING (args
[n
], t
);
3197 if (STRING_MULTIBYTE (args
[n
]) && ! multibyte
)
3204 else if (STRINGP (args
[n
]))
3207 if (*format
!= 's' && *format
!= 'S')
3208 error ("Format specifier doesn't match argument type");
3209 thissize
= CONVERTED_BYTE_SIZE (multibyte
, args
[n
]);
3211 /* Would get MPV otherwise, since Lisp_Int's `point' to low memory. */
3212 else if (INTEGERP (args
[n
]) && *format
!= 's')
3214 /* The following loop assumes the Lisp type indicates
3215 the proper way to pass the argument.
3216 So make sure we have a flonum if the argument should
3218 if (*format
== 'e' || *format
== 'f' || *format
== 'g')
3219 args
[n
] = Ffloat (args
[n
]);
3221 if (*format
!= 'd' && *format
!= 'o' && *format
!= 'x'
3222 && *format
!= 'i' && *format
!= 'X' && *format
!= 'c')
3223 error ("Invalid format operation %%%c", *format
);
3227 && (! SINGLE_BYTE_CHAR_P (XINT (args
[n
]))
3228 || XINT (args
[n
]) == 0))
3235 args
[n
] = Fchar_to_string (args
[n
]);
3236 thissize
= STRING_BYTES (XSTRING (args
[n
]));
3239 else if (FLOATP (args
[n
]) && *format
!= 's')
3241 if (! (*format
== 'e' || *format
== 'f' || *format
== 'g'))
3242 args
[n
] = Ftruncate (args
[n
], Qnil
);
3244 /* Note that we're using sprintf to print floats,
3245 so we have to take into account what that function
3247 thissize
= 200 + precision
;
3251 /* Anything but a string, convert to a string using princ. */
3252 register Lisp_Object tem
;
3253 tem
= Fprin1_to_string (args
[n
], Qt
);
3254 if (STRING_MULTIBYTE (tem
) & ! multibyte
)
3263 thissize
= max (field_width
, thissize
);
3264 total
+= thissize
+ 4;
3267 /* Now we can no longer jump to retry.
3268 TOTAL and LONGEST_FORMAT are known for certain. */
3270 this_format
= (unsigned char *) alloca (longest_format
+ 1);
3272 /* Allocate the space for the result.
3273 Note that TOTAL is an overestimate. */
3275 buf
= (char *) alloca (total
+ 1);
3277 buf
= (char *) xmalloc (total
+ 1);
3283 /* Scan the format and store result in BUF. */
3284 format
= XSTRING (args
[0])->data
;
3285 maybe_combine_byte
= 0;
3286 while (format
!= end
)
3292 unsigned char *this_format_start
= format
;
3296 /* Process a numeric arg and skip it. */
3297 minlen
= atoi (format
);
3299 minlen
= - minlen
, negative
= 1;
3301 while ((*format
>= '0' && *format
<= '9')
3302 || *format
== '-' || *format
== ' ' || *format
== '.')
3305 if (*format
++ == '%')
3314 if (STRINGP (args
[n
]))
3316 int padding
, nbytes
, start
, end
;
3317 int width
= lisp_string_width (args
[n
], -1, NULL
, NULL
);
3319 /* If spec requires it, pad on right with spaces. */
3320 padding
= minlen
- width
;
3322 while (padding
-- > 0)
3332 && !ASCII_BYTE_P (*((unsigned char *) p
- 1))
3333 && STRING_MULTIBYTE (args
[n
])
3334 && !CHAR_HEAD_P (XSTRING (args
[n
])->data
[0]))
3335 maybe_combine_byte
= 1;
3336 nbytes
= copy_text (XSTRING (args
[n
])->data
, p
,
3337 STRING_BYTES (XSTRING (args
[n
])),
3338 STRING_MULTIBYTE (args
[n
]), multibyte
);
3340 nchars
+= XSTRING (args
[n
])->size
;
3344 while (padding
-- > 0)
3350 /* If this argument has text properties, record where
3351 in the result string it appears. */
3352 if (XSTRING (args
[n
])->intervals
)
3356 int nbytes
= nargs
* sizeof *info
;
3357 info
= (struct info
*) alloca (nbytes
);
3358 bzero (info
, nbytes
);
3361 info
[n
].start
= start
;
3365 else if (INTEGERP (args
[n
]) || FLOATP (args
[n
]))
3369 bcopy (this_format_start
, this_format
,
3370 format
- this_format_start
);
3371 this_format
[format
- this_format_start
] = 0;
3373 if (INTEGERP (args
[n
]))
3374 sprintf (p
, this_format
, XINT (args
[n
]));
3376 sprintf (p
, this_format
, XFLOAT_DATA (args
[n
]));
3380 && !ASCII_BYTE_P (*((unsigned char *) p
- 1))
3381 && !CHAR_HEAD_P (*((unsigned char *) p
)))
3382 maybe_combine_byte
= 1;
3383 this_nchars
= strlen (p
);
3385 p
+= str_to_multibyte (p
, buf
+ total
- p
, this_nchars
);
3388 nchars
+= this_nchars
;
3391 else if (STRING_MULTIBYTE (args
[0]))
3393 /* Copy a whole multibyte character. */
3396 && !ASCII_BYTE_P (*((unsigned char *) p
- 1))
3397 && !CHAR_HEAD_P (*format
))
3398 maybe_combine_byte
= 1;
3400 while (! CHAR_HEAD_P (*format
)) *p
++ = *format
++;
3405 /* Convert a single-byte character to multibyte. */
3406 int len
= copy_text (format
, p
, 1, 0, 1);
3413 *p
++ = *format
++, nchars
++;
3416 if (p
> buf
+ total
+ 1)
3419 if (maybe_combine_byte
)
3420 nchars
= multibyte_chars_in_text (buf
, p
- buf
);
3421 val
= make_specified_string (buf
, nchars
, p
- buf
, multibyte
);
3423 /* If we allocated BUF with malloc, free it too. */
3427 /* If the format string has text properties, or any of the string
3428 arguments has text properties, set up text properties of the
3431 if (XSTRING (args
[0])->intervals
|| info
)
3433 Lisp_Object len
, new_len
, props
;
3434 struct gcpro gcpro1
;
3436 /* Add text properties from the format string. */
3437 len
= make_number (XSTRING (args
[0])->size
);
3438 props
= text_property_list (args
[0], make_number (0), len
, Qnil
);
3443 new_len
= make_number (XSTRING (val
)->size
);
3444 extend_property_ranges (props
, len
, new_len
);
3445 add_text_properties_from_list (val
, props
, make_number (0));
3448 /* Add text properties from arguments. */
3450 for (n
= 1; n
< nargs
; ++n
)
3453 len
= make_number (XSTRING (args
[n
])->size
);
3454 new_len
= make_number (info
[n
].end
- info
[n
].start
);
3455 props
= text_property_list (args
[n
], make_number (0), len
, Qnil
);
3456 extend_property_ranges (props
, len
, new_len
);
3457 /* If successive arguments have properites, be sure that
3458 the value of `composition' property be the copy. */
3459 if (n
> 1 && info
[n
- 1].end
)
3460 make_composition_value_copy (props
);
3461 add_text_properties_from_list (val
, props
,
3462 make_number (info
[n
].start
));
3475 format1 (string1
, arg0
, arg1
, arg2
, arg3
, arg4
)
3476 EMACS_INT arg0
, arg1
, arg2
, arg3
, arg4
;
3490 doprnt (buf
, sizeof buf
, string1
, (char *)0, 5, (char **) args
);
3492 doprnt (buf
, sizeof buf
, string1
, (char *)0, 5, &string1
+ 1);
3494 return build_string (buf
);
3497 DEFUN ("char-equal", Fchar_equal
, Schar_equal
, 2, 2, 0,
3498 "Return t if two characters match, optionally ignoring case.\n\
3499 Both arguments must be characters (i.e. integers).\n\
3500 Case is ignored if `case-fold-search' is non-nil in the current buffer.")
3502 register Lisp_Object c1
, c2
;
3505 CHECK_NUMBER (c1
, 0);
3506 CHECK_NUMBER (c2
, 1);
3508 if (XINT (c1
) == XINT (c2
))
3510 if (NILP (current_buffer
->case_fold_search
))
3513 /* Do these in separate statements,
3514 then compare the variables.
3515 because of the way DOWNCASE uses temp variables. */
3516 i1
= DOWNCASE (XFASTINT (c1
));
3517 i2
= DOWNCASE (XFASTINT (c2
));
3518 return (i1
== i2
? Qt
: Qnil
);
3521 /* Transpose the markers in two regions of the current buffer, and
3522 adjust the ones between them if necessary (i.e.: if the regions
3525 START1, END1 are the character positions of the first region.
3526 START1_BYTE, END1_BYTE are the byte positions.
3527 START2, END2 are the character positions of the second region.
3528 START2_BYTE, END2_BYTE are the byte positions.
3530 Traverses the entire marker list of the buffer to do so, adding an
3531 appropriate amount to some, subtracting from some, and leaving the
3532 rest untouched. Most of this is copied from adjust_markers in insdel.c.
3534 It's the caller's job to ensure that START1 <= END1 <= START2 <= END2. */
3537 transpose_markers (start1
, end1
, start2
, end2
,
3538 start1_byte
, end1_byte
, start2_byte
, end2_byte
)
3539 register int start1
, end1
, start2
, end2
;
3540 register int start1_byte
, end1_byte
, start2_byte
, end2_byte
;
3542 register int amt1
, amt1_byte
, amt2
, amt2_byte
, diff
, diff_byte
, mpos
;
3543 register Lisp_Object marker
;
3545 /* Update point as if it were a marker. */
3549 TEMP_SET_PT_BOTH (PT
+ (end2
- end1
),
3550 PT_BYTE
+ (end2_byte
- end1_byte
));
3551 else if (PT
< start2
)
3552 TEMP_SET_PT_BOTH (PT
+ (end2
- start2
) - (end1
- start1
),
3553 (PT_BYTE
+ (end2_byte
- start2_byte
)
3554 - (end1_byte
- start1_byte
)));
3556 TEMP_SET_PT_BOTH (PT
- (start2
- start1
),
3557 PT_BYTE
- (start2_byte
- start1_byte
));
3559 /* We used to adjust the endpoints here to account for the gap, but that
3560 isn't good enough. Even if we assume the caller has tried to move the
3561 gap out of our way, it might still be at start1 exactly, for example;
3562 and that places it `inside' the interval, for our purposes. The amount
3563 of adjustment is nontrivial if there's a `denormalized' marker whose
3564 position is between GPT and GPT + GAP_SIZE, so it's simpler to leave
3565 the dirty work to Fmarker_position, below. */
3567 /* The difference between the region's lengths */
3568 diff
= (end2
- start2
) - (end1
- start1
);
3569 diff_byte
= (end2_byte
- start2_byte
) - (end1_byte
- start1_byte
);
3571 /* For shifting each marker in a region by the length of the other
3572 region plus the distance between the regions. */
3573 amt1
= (end2
- start2
) + (start2
- end1
);
3574 amt2
= (end1
- start1
) + (start2
- end1
);
3575 amt1_byte
= (end2_byte
- start2_byte
) + (start2_byte
- end1_byte
);
3576 amt2_byte
= (end1_byte
- start1_byte
) + (start2_byte
- end1_byte
);
3578 for (marker
= BUF_MARKERS (current_buffer
); !NILP (marker
);
3579 marker
= XMARKER (marker
)->chain
)
3581 mpos
= marker_byte_position (marker
);
3582 if (mpos
>= start1_byte
&& mpos
< end2_byte
)
3584 if (mpos
< end1_byte
)
3586 else if (mpos
< start2_byte
)
3590 XMARKER (marker
)->bytepos
= mpos
;
3592 mpos
= XMARKER (marker
)->charpos
;
3593 if (mpos
>= start1
&& mpos
< end2
)
3597 else if (mpos
< start2
)
3602 XMARKER (marker
)->charpos
= mpos
;
3606 DEFUN ("transpose-regions", Ftranspose_regions
, Stranspose_regions
, 4, 5, 0,
3607 "Transpose region START1 to END1 with START2 to END2.\n\
3608 The regions may not be overlapping, because the size of the buffer is\n\
3609 never changed in a transposition.\n\
3611 Optional fifth arg LEAVE_MARKERS, if non-nil, means don't update\n\
3612 any markers that happen to be located in the regions.\n\
3614 Transposing beyond buffer boundaries is an error.")
3615 (startr1
, endr1
, startr2
, endr2
, leave_markers
)
3616 Lisp_Object startr1
, endr1
, startr2
, endr2
, leave_markers
;
3618 register int start1
, end1
, start2
, end2
;
3619 int start1_byte
, start2_byte
, len1_byte
, len2_byte
;
3620 int gap
, len1
, len_mid
, len2
;
3621 unsigned char *start1_addr
, *start2_addr
, *temp
;
3623 INTERVAL cur_intv
, tmp_interval1
, tmp_interval_mid
, tmp_interval2
;
3624 cur_intv
= BUF_INTERVALS (current_buffer
);
3626 validate_region (&startr1
, &endr1
);
3627 validate_region (&startr2
, &endr2
);
3629 start1
= XFASTINT (startr1
);
3630 end1
= XFASTINT (endr1
);
3631 start2
= XFASTINT (startr2
);
3632 end2
= XFASTINT (endr2
);
3635 /* Swap the regions if they're reversed. */
3638 register int glumph
= start1
;
3646 len1
= end1
- start1
;
3647 len2
= end2
- start2
;
3650 error ("Transposed regions overlap");
3651 else if (start1
== end1
|| start2
== end2
)
3652 error ("Transposed region has length 0");
3654 /* The possibilities are:
3655 1. Adjacent (contiguous) regions, or separate but equal regions
3656 (no, really equal, in this case!), or
3657 2. Separate regions of unequal size.
3659 The worst case is usually No. 2. It means that (aside from
3660 potential need for getting the gap out of the way), there also
3661 needs to be a shifting of the text between the two regions. So
3662 if they are spread far apart, we are that much slower... sigh. */
3664 /* It must be pointed out that the really studly thing to do would
3665 be not to move the gap at all, but to leave it in place and work
3666 around it if necessary. This would be extremely efficient,
3667 especially considering that people are likely to do
3668 transpositions near where they are working interactively, which
3669 is exactly where the gap would be found. However, such code
3670 would be much harder to write and to read. So, if you are
3671 reading this comment and are feeling squirrely, by all means have
3672 a go! I just didn't feel like doing it, so I will simply move
3673 the gap the minimum distance to get it out of the way, and then
3674 deal with an unbroken array. */
3676 /* Make sure the gap won't interfere, by moving it out of the text
3677 we will operate on. */
3678 if (start1
< gap
&& gap
< end2
)
3680 if (gap
- start1
< end2
- gap
)
3686 start1_byte
= CHAR_TO_BYTE (start1
);
3687 start2_byte
= CHAR_TO_BYTE (start2
);
3688 len1_byte
= CHAR_TO_BYTE (end1
) - start1_byte
;
3689 len2_byte
= CHAR_TO_BYTE (end2
) - start2_byte
;
3691 #ifdef BYTE_COMBINING_DEBUG
3694 if (count_combining_before (BYTE_POS_ADDR (start2_byte
),
3695 len2_byte
, start1
, start1_byte
)
3696 || count_combining_before (BYTE_POS_ADDR (start1_byte
),
3697 len1_byte
, end2
, start2_byte
+ len2_byte
)
3698 || count_combining_after (BYTE_POS_ADDR (start1_byte
),
3699 len1_byte
, end2
, start2_byte
+ len2_byte
))
3704 if (count_combining_before (BYTE_POS_ADDR (start2_byte
),
3705 len2_byte
, start1
, start1_byte
)
3706 || count_combining_before (BYTE_POS_ADDR (start1_byte
),
3707 len1_byte
, start2
, start2_byte
)
3708 || count_combining_after (BYTE_POS_ADDR (start2_byte
),
3709 len2_byte
, end1
, start1_byte
+ len1_byte
)
3710 || count_combining_after (BYTE_POS_ADDR (start1_byte
),
3711 len1_byte
, end2
, start2_byte
+ len2_byte
))
3716 /* Hmmm... how about checking to see if the gap is large
3717 enough to use as the temporary storage? That would avoid an
3718 allocation... interesting. Later, don't fool with it now. */
3720 /* Working without memmove, for portability (sigh), so must be
3721 careful of overlapping subsections of the array... */
3723 if (end1
== start2
) /* adjacent regions */
3725 modify_region (current_buffer
, start1
, end2
);
3726 record_change (start1
, len1
+ len2
);
3728 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
3729 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
3730 Fset_text_properties (make_number (start1
), make_number (end2
),
3733 /* First region smaller than second. */
3734 if (len1_byte
< len2_byte
)
3736 /* We use alloca only if it is small,
3737 because we want to avoid stack overflow. */
3738 if (len2_byte
> 20000)
3739 temp
= (unsigned char *) xmalloc (len2_byte
);
3741 temp
= (unsigned char *) alloca (len2_byte
);
3743 /* Don't precompute these addresses. We have to compute them
3744 at the last minute, because the relocating allocator might
3745 have moved the buffer around during the xmalloc. */
3746 start1_addr
= BYTE_POS_ADDR (start1_byte
);
3747 start2_addr
= BYTE_POS_ADDR (start2_byte
);
3749 bcopy (start2_addr
, temp
, len2_byte
);
3750 bcopy (start1_addr
, start1_addr
+ len2_byte
, len1_byte
);
3751 bcopy (temp
, start1_addr
, len2_byte
);
3752 if (len2_byte
> 20000)
3756 /* First region not smaller than second. */
3758 if (len1_byte
> 20000)
3759 temp
= (unsigned char *) xmalloc (len1_byte
);
3761 temp
= (unsigned char *) alloca (len1_byte
);
3762 start1_addr
= BYTE_POS_ADDR (start1_byte
);
3763 start2_addr
= BYTE_POS_ADDR (start2_byte
);
3764 bcopy (start1_addr
, temp
, len1_byte
);
3765 bcopy (start2_addr
, start1_addr
, len2_byte
);
3766 bcopy (temp
, start1_addr
+ len2_byte
, len1_byte
);
3767 if (len1_byte
> 20000)
3770 graft_intervals_into_buffer (tmp_interval1
, start1
+ len2
,
3771 len1
, current_buffer
, 0);
3772 graft_intervals_into_buffer (tmp_interval2
, start1
,
3773 len2
, current_buffer
, 0);
3774 update_compositions (start1
, start1
+ len2
, CHECK_BORDER
);
3775 update_compositions (start1
+ len2
, end2
, CHECK_TAIL
);
3777 /* Non-adjacent regions, because end1 != start2, bleagh... */
3780 len_mid
= start2_byte
- (start1_byte
+ len1_byte
);
3782 if (len1_byte
== len2_byte
)
3783 /* Regions are same size, though, how nice. */
3785 modify_region (current_buffer
, start1
, end1
);
3786 modify_region (current_buffer
, start2
, end2
);
3787 record_change (start1
, len1
);
3788 record_change (start2
, len2
);
3789 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
3790 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
3791 Fset_text_properties (make_number (start1
), make_number (end1
),
3793 Fset_text_properties (make_number (start2
), make_number (end2
),
3796 if (len1_byte
> 20000)
3797 temp
= (unsigned char *) xmalloc (len1_byte
);
3799 temp
= (unsigned char *) alloca (len1_byte
);
3800 start1_addr
= BYTE_POS_ADDR (start1_byte
);
3801 start2_addr
= BYTE_POS_ADDR (start2_byte
);
3802 bcopy (start1_addr
, temp
, len1_byte
);
3803 bcopy (start2_addr
, start1_addr
, len2_byte
);
3804 bcopy (temp
, start2_addr
, len1_byte
);
3805 if (len1_byte
> 20000)
3807 graft_intervals_into_buffer (tmp_interval1
, start2
,
3808 len1
, current_buffer
, 0);
3809 graft_intervals_into_buffer (tmp_interval2
, start1
,
3810 len2
, current_buffer
, 0);
3813 else if (len1_byte
< len2_byte
) /* Second region larger than first */
3814 /* Non-adjacent & unequal size, area between must also be shifted. */
3816 modify_region (current_buffer
, start1
, end2
);
3817 record_change (start1
, (end2
- start1
));
3818 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
3819 tmp_interval_mid
= copy_intervals (cur_intv
, end1
, len_mid
);
3820 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
3821 Fset_text_properties (make_number (start1
), make_number (end2
),
3824 /* holds region 2 */
3825 if (len2_byte
> 20000)
3826 temp
= (unsigned char *) xmalloc (len2_byte
);
3828 temp
= (unsigned char *) alloca (len2_byte
);
3829 start1_addr
= BYTE_POS_ADDR (start1_byte
);
3830 start2_addr
= BYTE_POS_ADDR (start2_byte
);
3831 bcopy (start2_addr
, temp
, len2_byte
);
3832 bcopy (start1_addr
, start1_addr
+ len_mid
+ len2_byte
, len1_byte
);
3833 safe_bcopy (start1_addr
+ len1_byte
, start1_addr
+ len2_byte
, len_mid
);
3834 bcopy (temp
, start1_addr
, len2_byte
);
3835 if (len2_byte
> 20000)
3837 graft_intervals_into_buffer (tmp_interval1
, end2
- len1
,
3838 len1
, current_buffer
, 0);
3839 graft_intervals_into_buffer (tmp_interval_mid
, start1
+ len2
,
3840 len_mid
, current_buffer
, 0);
3841 graft_intervals_into_buffer (tmp_interval2
, start1
,
3842 len2
, current_buffer
, 0);
3845 /* Second region smaller than first. */
3847 record_change (start1
, (end2
- start1
));
3848 modify_region (current_buffer
, start1
, end2
);
3850 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
3851 tmp_interval_mid
= copy_intervals (cur_intv
, end1
, len_mid
);
3852 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
3853 Fset_text_properties (make_number (start1
), make_number (end2
),
3856 /* holds region 1 */
3857 if (len1_byte
> 20000)
3858 temp
= (unsigned char *) xmalloc (len1_byte
);
3860 temp
= (unsigned char *) alloca (len1_byte
);
3861 start1_addr
= BYTE_POS_ADDR (start1_byte
);
3862 start2_addr
= BYTE_POS_ADDR (start2_byte
);
3863 bcopy (start1_addr
, temp
, len1_byte
);
3864 bcopy (start2_addr
, start1_addr
, len2_byte
);
3865 bcopy (start1_addr
+ len1_byte
, start1_addr
+ len2_byte
, len_mid
);
3866 bcopy (temp
, start1_addr
+ len2_byte
+ len_mid
, len1_byte
);
3867 if (len1_byte
> 20000)
3869 graft_intervals_into_buffer (tmp_interval1
, end2
- len1
,
3870 len1
, current_buffer
, 0);
3871 graft_intervals_into_buffer (tmp_interval_mid
, start1
+ len2
,
3872 len_mid
, current_buffer
, 0);
3873 graft_intervals_into_buffer (tmp_interval2
, start1
,
3874 len2
, current_buffer
, 0);
3877 update_compositions (start1
, start1
+ len2
, CHECK_BORDER
);
3878 update_compositions (end2
- len1
, end2
, CHECK_BORDER
);
3881 /* When doing multiple transpositions, it might be nice
3882 to optimize this. Perhaps the markers in any one buffer
3883 should be organized in some sorted data tree. */
3884 if (NILP (leave_markers
))
3886 transpose_markers (start1
, end1
, start2
, end2
,
3887 start1_byte
, start1_byte
+ len1_byte
,
3888 start2_byte
, start2_byte
+ len2_byte
);
3889 fix_overlays_in_range (start1
, end2
);
3901 Qbuffer_access_fontify_functions
3902 = intern ("buffer-access-fontify-functions");
3903 staticpro (&Qbuffer_access_fontify_functions
);
3905 DEFVAR_LISP ("inhibit-field-text-motion", &Vinhibit_field_text_motion
,
3906 "Non-nil means.text motion commands don't notice fields.");
3907 Vinhibit_field_text_motion
= Qnil
;
3909 DEFVAR_LISP ("buffer-access-fontify-functions",
3910 &Vbuffer_access_fontify_functions
,
3911 "List of functions called by `buffer-substring' to fontify if necessary.\n\
3912 Each function is called with two arguments which specify the range\n\
3913 of the buffer being accessed.");
3914 Vbuffer_access_fontify_functions
= Qnil
;
3918 extern Lisp_Object Vprin1_to_string_buffer
;
3919 obuf
= Fcurrent_buffer ();
3920 /* Do this here, because init_buffer_once is too early--it won't work. */
3921 Fset_buffer (Vprin1_to_string_buffer
);
3922 /* Make sure buffer-access-fontify-functions is nil in this buffer. */
3923 Fset (Fmake_local_variable (intern ("buffer-access-fontify-functions")),
3928 DEFVAR_LISP ("buffer-access-fontified-property",
3929 &Vbuffer_access_fontified_property
,
3930 "Property which (if non-nil) indicates text has been fontified.\n\
3931 `buffer-substring' need not call the `buffer-access-fontify-functions'\n\
3932 functions if all the text being accessed has this property.");
3933 Vbuffer_access_fontified_property
= Qnil
;
3935 DEFVAR_LISP ("system-name", &Vsystem_name
,
3936 "The name of the machine Emacs is running on.");
3938 DEFVAR_LISP ("user-full-name", &Vuser_full_name
,
3939 "The full name of the user logged in.");
3941 DEFVAR_LISP ("user-login-name", &Vuser_login_name
,
3942 "The user's name, taken from environment variables if possible.");
3944 DEFVAR_LISP ("user-real-login-name", &Vuser_real_login_name
,
3945 "The user's name, based upon the real uid only.");
3947 defsubr (&Spropertize
);
3948 defsubr (&Schar_equal
);
3949 defsubr (&Sgoto_char
);
3950 defsubr (&Sstring_to_char
);
3951 defsubr (&Schar_to_string
);
3952 defsubr (&Sbuffer_substring
);
3953 defsubr (&Sbuffer_substring_no_properties
);
3954 defsubr (&Sbuffer_string
);
3956 defsubr (&Spoint_marker
);
3957 defsubr (&Smark_marker
);
3959 defsubr (&Sregion_beginning
);
3960 defsubr (&Sregion_end
);
3962 staticpro (&Qfield
);
3963 Qfield
= intern ("field");
3964 staticpro (&Qboundary
);
3965 Qboundary
= intern ("boundary");
3966 defsubr (&Sfield_beginning
);
3967 defsubr (&Sfield_end
);
3968 defsubr (&Sfield_string
);
3969 defsubr (&Sfield_string_no_properties
);
3970 defsubr (&Sdelete_field
);
3971 defsubr (&Sconstrain_to_field
);
3973 defsubr (&Sline_beginning_position
);
3974 defsubr (&Sline_end_position
);
3976 /* defsubr (&Smark); */
3977 /* defsubr (&Sset_mark); */
3978 defsubr (&Ssave_excursion
);
3979 defsubr (&Ssave_current_buffer
);
3981 defsubr (&Sbufsize
);
3982 defsubr (&Spoint_max
);
3983 defsubr (&Spoint_min
);
3984 defsubr (&Spoint_min_marker
);
3985 defsubr (&Spoint_max_marker
);
3986 defsubr (&Sgap_position
);
3987 defsubr (&Sgap_size
);
3988 defsubr (&Sposition_bytes
);
3989 defsubr (&Sbyte_to_position
);
3995 defsubr (&Sfollowing_char
);
3996 defsubr (&Sprevious_char
);
3997 defsubr (&Schar_after
);
3998 defsubr (&Schar_before
);
4000 defsubr (&Sinsert_before_markers
);
4001 defsubr (&Sinsert_and_inherit
);
4002 defsubr (&Sinsert_and_inherit_before_markers
);
4003 defsubr (&Sinsert_char
);
4005 defsubr (&Suser_login_name
);
4006 defsubr (&Suser_real_login_name
);
4007 defsubr (&Suser_uid
);
4008 defsubr (&Suser_real_uid
);
4009 defsubr (&Suser_full_name
);
4010 defsubr (&Semacs_pid
);
4011 defsubr (&Scurrent_time
);
4012 defsubr (&Sformat_time_string
);
4013 defsubr (&Sfloat_time
);
4014 defsubr (&Sdecode_time
);
4015 defsubr (&Sencode_time
);
4016 defsubr (&Scurrent_time_string
);
4017 defsubr (&Scurrent_time_zone
);
4018 defsubr (&Sset_time_zone_rule
);
4019 defsubr (&Ssystem_name
);
4020 defsubr (&Smessage
);
4021 defsubr (&Smessage_box
);
4022 defsubr (&Smessage_or_box
);
4023 defsubr (&Scurrent_message
);
4026 defsubr (&Sinsert_buffer_substring
);
4027 defsubr (&Scompare_buffer_substrings
);
4028 defsubr (&Ssubst_char_in_region
);
4029 defsubr (&Stranslate_region
);
4030 defsubr (&Sdelete_region
);
4031 defsubr (&Sdelete_and_extract_region
);
4033 defsubr (&Snarrow_to_region
);
4034 defsubr (&Ssave_restriction
);
4035 defsubr (&Stranspose_regions
);