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
= (SINGLE_BYTE_CHAR_P (XFASTINT (character
))
171 ? (*str
= (unsigned char)(XFASTINT (character
)), 1)
172 : char_to_string (XFASTINT (character
), str
));
173 return make_string_from_bytes (str
, 1, len
);
176 DEFUN ("string-to-char", Fstring_to_char
, Sstring_to_char
, 1, 1, 0,
177 "Convert arg STRING to a character, the first character of that string.\n\
178 A multibyte character is handled correctly.")
180 register Lisp_Object string
;
182 register Lisp_Object val
;
183 register struct Lisp_String
*p
;
184 CHECK_STRING (string
, 0);
185 p
= XSTRING (string
);
188 if (STRING_MULTIBYTE (string
))
189 XSETFASTINT (val
, STRING_CHAR (p
->data
, STRING_BYTES (p
)));
191 XSETFASTINT (val
, p
->data
[0]);
194 XSETFASTINT (val
, 0);
199 buildmark (charpos
, bytepos
)
200 int charpos
, bytepos
;
202 register Lisp_Object mark
;
203 mark
= Fmake_marker ();
204 set_marker_both (mark
, Qnil
, charpos
, bytepos
);
208 DEFUN ("point", Fpoint
, Spoint
, 0, 0, 0,
209 "Return value of point, as an integer.\n\
210 Beginning of buffer is position (point-min)")
214 XSETFASTINT (temp
, PT
);
218 DEFUN ("point-marker", Fpoint_marker
, Spoint_marker
, 0, 0, 0,
219 "Return value of point, as a marker object.")
222 return buildmark (PT
, PT_BYTE
);
226 clip_to_bounds (lower
, num
, upper
)
227 int lower
, num
, upper
;
231 else if (num
> upper
)
237 DEFUN ("goto-char", Fgoto_char
, Sgoto_char
, 1, 1, "NGoto char: ",
238 "Set point to POSITION, a number or marker.\n\
239 Beginning of buffer is position (point-min), end is (point-max).\n\
240 If the position is in the middle of a multibyte form,\n\
241 the actual point is set at the head of the multibyte form\n\
242 except in the case that `enable-multibyte-characters' is nil.")
244 register Lisp_Object position
;
248 if (MARKERP (position
)
249 && current_buffer
== XMARKER (position
)->buffer
)
251 pos
= marker_position (position
);
253 SET_PT_BOTH (BEGV
, BEGV_BYTE
);
255 SET_PT_BOTH (ZV
, ZV_BYTE
);
257 SET_PT_BOTH (pos
, marker_byte_position (position
));
262 CHECK_NUMBER_COERCE_MARKER (position
, 0);
264 pos
= clip_to_bounds (BEGV
, XINT (position
), ZV
);
270 /* Return the start or end position of the region.
271 BEGINNINGP non-zero means return the start.
272 If there is no region active, signal an error. */
275 region_limit (beginningp
)
278 extern Lisp_Object Vmark_even_if_inactive
; /* Defined in callint.c. */
281 if (!NILP (Vtransient_mark_mode
)
282 && NILP (Vmark_even_if_inactive
)
283 && NILP (current_buffer
->mark_active
))
284 Fsignal (Qmark_inactive
, Qnil
);
286 m
= Fmarker_position (current_buffer
->mark
);
288 error ("There is no region now");
290 if ((PT
< XFASTINT (m
)) == beginningp
)
291 m
= make_number (PT
);
295 DEFUN ("region-beginning", Fregion_beginning
, Sregion_beginning
, 0, 0, 0,
296 "Return position of beginning of region, as an integer.")
299 return region_limit (1);
302 DEFUN ("region-end", Fregion_end
, Sregion_end
, 0, 0, 0,
303 "Return position of end of region, as an integer.")
306 return region_limit (0);
309 DEFUN ("mark-marker", Fmark_marker
, Smark_marker
, 0, 0, 0,
310 "Return this buffer's mark, as a marker object.\n\
311 Watch out! Moving this marker changes the mark position.\n\
312 If you set the marker not to point anywhere, the buffer will have no mark.")
315 return current_buffer
->mark
;
319 /* Return nonzero if POS1 and POS2 have the same value
320 for the text property PROP. */
323 char_property_eq (prop
, pos1
, pos2
)
325 Lisp_Object pos1
, pos2
;
327 Lisp_Object pval1
, pval2
;
329 pval1
= Fget_char_property (pos1
, prop
, Qnil
);
330 pval2
= Fget_char_property (pos2
, prop
, Qnil
);
332 return EQ (pval1
, pval2
);
335 /* Return the direction from which the text-property PROP would be
336 inherited by any new text inserted at POS: 1 if it would be
337 inherited from the char after POS, -1 if it would be inherited from
338 the char before POS, and 0 if from neither. */
341 text_property_stickiness (prop
, pos
)
345 Lisp_Object front_sticky
;
347 if (XINT (pos
) > BEGV
)
348 /* Consider previous character. */
350 Lisp_Object prev_pos
, rear_non_sticky
;
352 prev_pos
= make_number (XINT (pos
) - 1);
353 rear_non_sticky
= Fget_text_property (prev_pos
, Qrear_nonsticky
, Qnil
);
355 if (EQ (rear_non_sticky
, Qnil
)
356 || (CONSP (rear_non_sticky
)
357 && NILP (Fmemq (prop
, rear_non_sticky
))))
358 /* PROP is not rear-non-sticky, and since this takes precedence over
359 any front-stickiness, PROP is inherited from before. */
363 /* Consider following character. */
364 front_sticky
= Fget_text_property (pos
, Qfront_sticky
, Qnil
);
366 if (EQ (front_sticky
, Qt
)
367 || (CONSP (front_sticky
)
368 && !NILP (Fmemq (prop
, front_sticky
))))
369 /* PROP is inherited from after. */
372 /* PROP is not inherited from either side. */
377 /* Find the field surrounding POS in *BEG and *END. If POS is nil,
378 the value of point is used instead. If BEG or END null,
379 means don't store the beginning or end of the field.
381 If MERGE_AT_BOUNDARY is nonzero, then if POS is at the very first
382 position of a field, then the beginning of the previous field is
383 returned instead of the beginning of POS's field (since the end of a
384 field is actually also the beginning of the next input field, this
385 behavior is sometimes useful). Additionally in the MERGE_AT_BOUNDARY
386 true case, if two fields are separated by a field with the special
387 value `boundary', and POS lies within it, then the two separated
388 fields are considered to be adjacent, and POS between them, when
389 finding the beginning and ending of the "merged" field.
391 Either BEG or END may be 0, in which case the corresponding value
395 find_field (pos
, merge_at_boundary
, beg
, end
)
397 Lisp_Object merge_at_boundary
;
400 /* Fields right before and after the point. */
401 Lisp_Object before_field
, after_field
;
402 /* If the fields came from overlays, the associated overlays.
403 Qnil means they came from text-properties. */
404 Lisp_Object before_overlay
= Qnil
, after_overlay
= Qnil
;
405 /* 1 if POS counts as the start of a field. */
406 int at_field_start
= 0;
407 /* 1 if POS counts as the end of a field. */
408 int at_field_end
= 0;
411 XSETFASTINT (pos
, PT
);
413 CHECK_NUMBER_COERCE_MARKER (pos
, 0);
416 = get_char_property_and_overlay (pos
, Qfield
, Qnil
, &after_overlay
);
418 = (XFASTINT (pos
) > BEGV
419 ? get_char_property_and_overlay (make_number (XINT (pos
) - 1),
424 /* See if we need to handle the case where MERGE_AT_BOUNDARY is nil
425 and POS is at beginning of a field, which can also be interpreted
426 as the end of the previous field. Note that the case where if
427 MERGE_AT_BOUNDARY is non-nil (see function comment) is actually the
428 more natural one; then we avoid treating the beginning of a field
430 if (NILP (merge_at_boundary
) && !EQ (after_field
, before_field
))
431 /* We are at a boundary, see which direction is inclusive. We
432 decide by seeing which field the `field' property sticks to. */
434 /* -1 means insertions go into before_field, 1 means they go
435 into after_field, 0 means neither. */
437 /* Whether the before/after_field come from overlays. */
438 int bop
= !NILP (before_overlay
);
439 int aop
= !NILP (after_overlay
);
441 if (bop
&& XMARKER (OVERLAY_END (before_overlay
))->insertion_type
== 1)
442 /* before_field is from an overlay, which expands upon
443 end-insertions. Note that it's possible for after_overlay to
444 also eat insertions here, but then they will overlap, and
445 there's not much we can do. */
448 && XMARKER (OVERLAY_START (after_overlay
))->insertion_type
== 0)
449 /* after_field is from an overlay, which expand to contain
453 /* Both fields come from overlays, but neither will contain any
457 /* before_field is an overlay that won't eat any insertion, but
458 after_field is from a text-property. Assume that the
459 text-property continues underneath the overlay, and so will
460 be inherited by any insertion, regardless of any stickiness
464 /* Similarly, when after_field is the overlay. */
467 /* Both fields come from text-properties. Look for explicit
468 stickiness properties. */
469 stickiness
= text_property_stickiness (Qfield
, pos
);
473 else if (stickiness
< 0)
476 /* STICKINESS == 0 means that any inserted text will get a
477 `field' char-property of nil, so check to see if that
478 matches either of the adjacent characters (this being a
479 kind of "stickiness by default"). */
481 if (NILP (before_field
))
482 at_field_end
= 1; /* Sticks to the left. */
483 else if (NILP (after_field
))
484 at_field_start
= 1; /* Sticks to the right. */
488 /* Note about special `boundary' fields:
490 Consider the case where the point (`.') is between the fields `x' and `y':
494 In this situation, if merge_at_boundary is true, we consider the
495 `x' and `y' fields as forming one big merged field, and so the end
496 of the field is the end of `y'.
498 However, if `x' and `y' are separated by a special `boundary' field
499 (a field with a `field' char-property of 'boundary), then we ignore
500 this special field when merging adjacent fields. Here's the same
501 situation, but with a `boundary' field between the `x' and `y' fields:
505 Here, if point is at the end of `x', the beginning of `y', or
506 anywhere in-between (within the `boundary' field), we merge all
507 three fields and consider the beginning as being the beginning of
508 the `x' field, and the end as being the end of the `y' field. */
513 /* POS is at the edge of a field, and we should consider it as
514 the beginning of the following field. */
515 *beg
= XFASTINT (pos
);
517 /* Find the previous field boundary. */
519 if (!NILP (merge_at_boundary
) && EQ (before_field
, Qboundary
))
520 /* Skip a `boundary' field. */
521 pos
= Fprevious_single_char_property_change (pos
, Qfield
, Qnil
,Qnil
);
523 pos
= Fprevious_single_char_property_change (pos
, Qfield
, Qnil
, Qnil
);
524 *beg
= NILP (pos
) ? BEGV
: XFASTINT (pos
);
531 /* POS is at the edge of a field, and we should consider it as
532 the end of the previous field. */
533 *end
= XFASTINT (pos
);
535 /* Find the next field boundary. */
537 if (!NILP (merge_at_boundary
) && EQ (after_field
, Qboundary
))
538 /* Skip a `boundary' field. */
539 pos
= Fnext_single_char_property_change (pos
, Qfield
, Qnil
, Qnil
);
541 pos
= Fnext_single_char_property_change (pos
, Qfield
, Qnil
, Qnil
);
542 *end
= NILP (pos
) ? ZV
: XFASTINT (pos
);
548 DEFUN ("delete-field", Fdelete_field
, Sdelete_field
, 0, 1, 0,
549 "Delete the field surrounding POS.\n\
550 A field is a region of text with the same `field' property.\n\
551 If POS is nil, the value of point is used for POS.")
556 find_field (pos
, Qnil
, &beg
, &end
);
558 del_range (beg
, end
);
562 DEFUN ("field-string", Ffield_string
, Sfield_string
, 0, 1, 0,
563 "Return the contents of the field surrounding POS as a string.\n\
564 A field is a region of text with the same `field' property.\n\
565 If POS is nil, the value of point is used for POS.")
570 find_field (pos
, Qnil
, &beg
, &end
);
571 return make_buffer_string (beg
, end
, 1);
574 DEFUN ("field-string-no-properties", Ffield_string_no_properties
, Sfield_string_no_properties
, 0, 1, 0,
575 "Return the contents of the field around POS, without text-properties.\n\
576 A field is a region of text with the same `field' property.\n\
577 If POS is nil, the value of point is used for POS.")
582 find_field (pos
, Qnil
, &beg
, &end
);
583 return make_buffer_string (beg
, end
, 0);
586 DEFUN ("field-beginning", Ffield_beginning
, Sfield_beginning
, 0, 2, 0,
587 "Return the beginning of the field surrounding POS.\n\
588 A field is a region of text with the same `field' property.\n\
589 If POS is nil, the value of point is used for POS.\n\
590 If ESCAPE-FROM-EDGE is non-nil and POS is at the beginning of its\n\
591 field, then the beginning of the *previous* field is returned.")
592 (pos
, escape_from_edge
)
593 Lisp_Object pos
, escape_from_edge
;
596 find_field (pos
, escape_from_edge
, &beg
, 0);
597 return make_number (beg
);
600 DEFUN ("field-end", Ffield_end
, Sfield_end
, 0, 2, 0,
601 "Return the end of the field surrounding POS.\n\
602 A field is a region of text with the same `field' property.\n\
603 If POS is nil, the value of point is used for POS.\n\
604 If ESCAPE-FROM-EDGE is non-nil and POS is at the end of its field,\n\
605 then the end of the *following* field is returned.")
606 (pos
, escape_from_edge
)
607 Lisp_Object pos
, escape_from_edge
;
610 find_field (pos
, escape_from_edge
, 0, &end
);
611 return make_number (end
);
614 DEFUN ("constrain-to-field", Fconstrain_to_field
, Sconstrain_to_field
, 2, 5, 0,
615 "Return the position closest to NEW-POS that is in the same field as OLD-POS.\n\
617 A field is a region of text with the same `field' property.\n\
618 If NEW-POS is nil, then the current point is used instead, and set to the\n\
619 constrained position if that is different.\n\
621 If OLD-POS is at the boundary of two fields, then the allowable\n\
622 positions for NEW-POS depends on the value of the optional argument\n\
623 ESCAPE-FROM-EDGE: If ESCAPE-FROM-EDGE is nil, then NEW-POS is\n\
624 constrained to the field that has the same `field' char-property\n\
625 as any new characters inserted at OLD-POS, whereas if ESCAPE-FROM-EDGE\n\
626 is non-nil, NEW-POS is constrained to the union of the two adjacent\n\
627 fields. Additionally, if two fields are separated by another field with\n\
628 the special value `boundary', then any point within this special field is\n\
629 also considered to be `on the boundary'.\n\
631 If the optional argument ONLY-IN-LINE is non-nil and constraining\n\
632 NEW-POS would move it to a different line, NEW-POS is returned\n\
633 unconstrained. This useful for commands that move by line, like\n\
634 \\[next-line] or \\[beginning-of-line], which should generally respect field boundaries\n\
635 only in the case where they can still move to the right line.\n\
637 If the optional argument INHIBIT-CAPTURE-PROPERTY is non-nil, and OLD-POS has\n\
638 a non-nil property of that name, then any field boundaries are ignored.\n\
640 Field boundaries are not noticed if `inhibit-field-text-motion' is non-nil.")
641 (new_pos
, old_pos
, escape_from_edge
, only_in_line
, inhibit_capture_property
)
642 Lisp_Object new_pos
, old_pos
;
643 Lisp_Object escape_from_edge
, only_in_line
, inhibit_capture_property
;
645 /* If non-zero, then the original point, before re-positioning. */
649 /* Use the current point, and afterwards, set it. */
652 XSETFASTINT (new_pos
, PT
);
655 if (NILP (Vinhibit_field_text_motion
)
656 && !EQ (new_pos
, old_pos
)
657 && (!NILP (Fget_char_property (new_pos
, Qfield
, Qnil
))
658 || !NILP (Fget_char_property (old_pos
, Qfield
, Qnil
)))
659 && (NILP (inhibit_capture_property
)
660 || NILP (Fget_char_property(old_pos
, inhibit_capture_property
, Qnil
))))
661 /* NEW_POS is not within the same field as OLD_POS; try to
662 move NEW_POS so that it is. */
665 Lisp_Object field_bound
;
667 CHECK_NUMBER_COERCE_MARKER (new_pos
, 0);
668 CHECK_NUMBER_COERCE_MARKER (old_pos
, 0);
670 fwd
= (XFASTINT (new_pos
) > XFASTINT (old_pos
));
673 field_bound
= Ffield_end (old_pos
, escape_from_edge
);
675 field_bound
= Ffield_beginning (old_pos
, escape_from_edge
);
677 if (/* See if ESCAPE_FROM_EDGE caused FIELD_BOUND to jump to the
678 other side of NEW_POS, which would mean that NEW_POS is
679 already acceptable, and it's not necessary to constrain it
681 ((XFASTINT (field_bound
) < XFASTINT (new_pos
)) ? fwd
: !fwd
)
682 /* NEW_POS should be constrained, but only if either
683 ONLY_IN_LINE is nil (in which case any constraint is OK),
684 or NEW_POS and FIELD_BOUND are on the same line (in which
685 case the constraint is OK even if ONLY_IN_LINE is non-nil). */
686 && (NILP (only_in_line
)
687 /* This is the ONLY_IN_LINE case, check that NEW_POS and
688 FIELD_BOUND are on the same line by seeing whether
689 there's an intervening newline or not. */
690 || (scan_buffer ('\n',
691 XFASTINT (new_pos
), XFASTINT (field_bound
),
692 fwd
? -1 : 1, &shortage
, 1),
694 /* Constrain NEW_POS to FIELD_BOUND. */
695 new_pos
= field_bound
;
697 if (orig_point
&& XFASTINT (new_pos
) != orig_point
)
698 /* The NEW_POS argument was originally nil, so automatically set PT. */
699 SET_PT (XFASTINT (new_pos
));
706 DEFUN ("line-beginning-position", Fline_beginning_position
, Sline_beginning_position
,
708 "Return the character position of the first character on the current line.\n\
709 With argument N not nil or 1, move forward N - 1 lines first.\n\
710 If scan reaches end of buffer, return that position.\n\
711 The scan does not cross a field boundary unless it would move\n\
712 beyond there to a different line. Field boundaries are not noticed if\n\
713 `inhibit-field-text-motion' is non-nil. .And if N is nil or 1,\n\
714 and scan starts at a field boundary, the scan stops as soon as it starts.\n\
716 This function does not move point.")
720 int orig
, orig_byte
, end
;
729 Fforward_line (make_number (XINT (n
) - 1));
732 SET_PT_BOTH (orig
, orig_byte
);
734 /* Return END constrained to the current input field. */
735 return Fconstrain_to_field (make_number (end
), make_number (orig
),
736 XINT (n
) != 1 ? Qt
: Qnil
,
740 DEFUN ("line-end-position", Fline_end_position
, Sline_end_position
,
742 "Return the character position of the last character on the current line.\n\
743 With argument N not nil or 1, move forward N - 1 lines first.\n\
744 If scan reaches end of buffer, return that position.\n\
745 This function does not move point.")
757 end_pos
= find_before_next_newline (orig
, 0, XINT (n
) - (XINT (n
) <= 0));
759 /* Return END_POS constrained to the current input field. */
760 return Fconstrain_to_field (make_number (end_pos
), make_number (orig
),
765 save_excursion_save ()
767 int visible
= (XBUFFER (XWINDOW (selected_window
)->buffer
)
770 return Fcons (Fpoint_marker (),
771 Fcons (Fcopy_marker (current_buffer
->mark
, Qnil
),
772 Fcons (visible
? Qt
: Qnil
,
773 Fcons (current_buffer
->mark_active
,
778 save_excursion_restore (info
)
781 Lisp_Object tem
, tem1
, omark
, nmark
;
782 struct gcpro gcpro1
, gcpro2
, gcpro3
;
785 tem
= Fmarker_buffer (XCAR (info
));
786 /* If buffer being returned to is now deleted, avoid error */
787 /* Otherwise could get error here while unwinding to top level
789 /* In that case, Fmarker_buffer returns nil now. */
793 omark
= nmark
= Qnil
;
794 GCPRO3 (info
, omark
, nmark
);
801 unchain_marker (tem
);
806 omark
= Fmarker_position (current_buffer
->mark
);
807 Fset_marker (current_buffer
->mark
, tem
, Fcurrent_buffer ());
808 nmark
= Fmarker_position (tem
);
809 unchain_marker (tem
);
813 visible_p
= !NILP (XCAR (info
));
815 #if 0 /* We used to make the current buffer visible in the selected window
816 if that was true previously. That avoids some anomalies.
817 But it creates others, and it wasn't documented, and it is simpler
818 and cleaner never to alter the window/buffer connections. */
821 && current_buffer
!= XBUFFER (XWINDOW (selected_window
)->buffer
))
822 Fswitch_to_buffer (Fcurrent_buffer (), Qnil
);
828 tem1
= current_buffer
->mark_active
;
829 current_buffer
->mark_active
= tem
;
831 if (!NILP (Vrun_hooks
))
833 /* If mark is active now, and either was not active
834 or was at a different place, run the activate hook. */
835 if (! NILP (current_buffer
->mark_active
))
837 if (! EQ (omark
, nmark
))
838 call1 (Vrun_hooks
, intern ("activate-mark-hook"));
840 /* If mark has ceased to be active, run deactivate hook. */
841 else if (! NILP (tem1
))
842 call1 (Vrun_hooks
, intern ("deactivate-mark-hook"));
845 /* If buffer was visible in a window, and a different window was
846 selected, and the old selected window is still showing this
847 buffer, restore point in that window. */
850 && !EQ (tem
, selected_window
)
851 /* This also verifies that the window is still live. */
852 && XBUFFER (XWINDOW (tem
)->buffer
) == current_buffer
)
853 Fset_window_point (tem
, make_number (PT
));
859 DEFUN ("save-excursion", Fsave_excursion
, Ssave_excursion
, 0, UNEVALLED
, 0,
860 "Save point, mark, and current buffer; execute BODY; restore those things.\n\
861 Executes BODY just like `progn'.\n\
862 The values of point, mark and the current buffer are restored\n\
863 even in case of abnormal exit (throw or error).\n\
864 The state of activation of the mark is also restored.\n\
866 This construct does not save `deactivate-mark', and therefore\n\
867 functions that change the buffer will still cause deactivation\n\
868 of the mark at the end of the command. To prevent that, bind\n\
869 `deactivate-mark' with `let'.")
873 register Lisp_Object val
;
874 int count
= specpdl_ptr
- specpdl
;
876 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
879 return unbind_to (count
, val
);
882 DEFUN ("save-current-buffer", Fsave_current_buffer
, Ssave_current_buffer
, 0, UNEVALLED
, 0,
883 "Save the current buffer; execute BODY; restore the current buffer.\n\
884 Executes BODY just like `progn'.")
889 int count
= specpdl_ptr
- specpdl
;
891 record_unwind_protect (set_buffer_if_live
, Fcurrent_buffer ());
894 return unbind_to (count
, val
);
897 DEFUN ("buffer-size", Fbufsize
, Sbufsize
, 0, 1, 0,
898 "Return the number of characters in the current buffer.\n\
899 If BUFFER, return the number of characters in that buffer instead.")
904 return make_number (Z
- BEG
);
907 CHECK_BUFFER (buffer
, 1);
908 return make_number (BUF_Z (XBUFFER (buffer
))
909 - BUF_BEG (XBUFFER (buffer
)));
913 DEFUN ("point-min", Fpoint_min
, Spoint_min
, 0, 0, 0,
914 "Return the minimum permissible value of point in the current buffer.\n\
915 This is 1, unless narrowing (a buffer restriction) is in effect.")
919 XSETFASTINT (temp
, BEGV
);
923 DEFUN ("point-min-marker", Fpoint_min_marker
, Spoint_min_marker
, 0, 0, 0,
924 "Return a marker to the minimum permissible value of point in this buffer.\n\
925 This is the beginning, unless narrowing (a buffer restriction) is in effect.")
928 return buildmark (BEGV
, BEGV_BYTE
);
931 DEFUN ("point-max", Fpoint_max
, Spoint_max
, 0, 0, 0,
932 "Return the maximum permissible value of point in the current buffer.\n\
933 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)\n\
934 is in effect, in which case it is less.")
938 XSETFASTINT (temp
, ZV
);
942 DEFUN ("point-max-marker", Fpoint_max_marker
, Spoint_max_marker
, 0, 0, 0,
943 "Return a marker to the maximum permissible value of point in this buffer.\n\
944 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)\n\
945 is in effect, in which case it is less.")
948 return buildmark (ZV
, ZV_BYTE
);
951 DEFUN ("gap-position", Fgap_position
, Sgap_position
, 0, 0, 0,
952 "Return the position of the gap, in the current buffer.\n\
953 See also `gap-size'.")
957 XSETFASTINT (temp
, GPT
);
961 DEFUN ("gap-size", Fgap_size
, Sgap_size
, 0, 0, 0,
962 "Return the size of the current buffer's gap.\n\
963 See also `gap-position'.")
967 XSETFASTINT (temp
, GAP_SIZE
);
971 DEFUN ("position-bytes", Fposition_bytes
, Sposition_bytes
, 1, 1, 0,
972 "Return the byte position for character position POSITION.\n\
973 If POSITION is out of range, the value is nil.")
975 Lisp_Object position
;
977 CHECK_NUMBER_COERCE_MARKER (position
, 1);
978 if (XINT (position
) < BEG
|| XINT (position
) > Z
)
980 return make_number (CHAR_TO_BYTE (XINT (position
)));
983 DEFUN ("byte-to-position", Fbyte_to_position
, Sbyte_to_position
, 1, 1, 0,
984 "Return the character position for byte position BYTEPOS.\n\
985 If BYTEPOS is out of range, the value is nil.")
989 CHECK_NUMBER (bytepos
, 1);
990 if (XINT (bytepos
) < BEG_BYTE
|| XINT (bytepos
) > Z_BYTE
)
992 return make_number (BYTE_TO_CHAR (XINT (bytepos
)));
995 DEFUN ("following-char", Ffollowing_char
, Sfollowing_char
, 0, 0, 0,
996 "Return the character following point, as a number.\n\
997 At the end of the buffer or accessible region, return 0.")
1002 XSETFASTINT (temp
, 0);
1004 XSETFASTINT (temp
, FETCH_CHAR (PT_BYTE
));
1008 DEFUN ("preceding-char", Fprevious_char
, Sprevious_char
, 0, 0, 0,
1009 "Return the character preceding point, as a number.\n\
1010 At the beginning of the buffer or accessible region, return 0.")
1015 XSETFASTINT (temp
, 0);
1016 else if (!NILP (current_buffer
->enable_multibyte_characters
))
1020 XSETFASTINT (temp
, FETCH_CHAR (pos
));
1023 XSETFASTINT (temp
, FETCH_BYTE (PT_BYTE
- 1));
1027 DEFUN ("bobp", Fbobp
, Sbobp
, 0, 0, 0,
1028 "Return t if point is at the beginning of the buffer.\n\
1029 If the buffer is narrowed, this means the beginning of the narrowed part.")
1037 DEFUN ("eobp", Feobp
, Seobp
, 0, 0, 0,
1038 "Return t if point is at the end of the buffer.\n\
1039 If the buffer is narrowed, this means the end of the narrowed part.")
1047 DEFUN ("bolp", Fbolp
, Sbolp
, 0, 0, 0,
1048 "Return t if point is at the beginning of a line.")
1051 if (PT
== BEGV
|| FETCH_BYTE (PT_BYTE
- 1) == '\n')
1056 DEFUN ("eolp", Feolp
, Seolp
, 0, 0, 0,
1057 "Return t if point is at the end of a line.\n\
1058 `End of a line' includes point being at the end of the buffer.")
1061 if (PT
== ZV
|| FETCH_BYTE (PT_BYTE
) == '\n')
1066 DEFUN ("char-after", Fchar_after
, Schar_after
, 0, 1, 0,
1067 "Return character in current buffer at position POS.\n\
1068 POS is an integer or a marker.\n\
1069 If POS is out of range, the value is nil.")
1073 register int pos_byte
;
1078 XSETFASTINT (pos
, PT
);
1083 pos_byte
= marker_byte_position (pos
);
1084 if (pos_byte
< BEGV_BYTE
|| pos_byte
>= ZV_BYTE
)
1089 CHECK_NUMBER_COERCE_MARKER (pos
, 0);
1090 if (XINT (pos
) < BEGV
|| XINT (pos
) >= ZV
)
1093 pos_byte
= CHAR_TO_BYTE (XINT (pos
));
1096 return make_number (FETCH_CHAR (pos_byte
));
1099 DEFUN ("char-before", Fchar_before
, Schar_before
, 0, 1, 0,
1100 "Return character in current buffer preceding position POS.\n\
1101 POS is an integer or a marker.\n\
1102 If POS is out of range, the value is nil.")
1106 register Lisp_Object val
;
1107 register int pos_byte
;
1112 XSETFASTINT (pos
, PT
);
1117 pos_byte
= marker_byte_position (pos
);
1119 if (pos_byte
<= BEGV_BYTE
|| pos_byte
> ZV_BYTE
)
1124 CHECK_NUMBER_COERCE_MARKER (pos
, 0);
1126 if (XINT (pos
) <= BEGV
|| XINT (pos
) > ZV
)
1129 pos_byte
= CHAR_TO_BYTE (XINT (pos
));
1132 if (!NILP (current_buffer
->enable_multibyte_characters
))
1135 XSETFASTINT (val
, FETCH_CHAR (pos_byte
));
1140 XSETFASTINT (val
, FETCH_BYTE (pos_byte
));
1145 DEFUN ("user-login-name", Fuser_login_name
, Suser_login_name
, 0, 1, 0,
1146 "Return the name under which the user logged in, as a string.\n\
1147 This is based on the effective uid, not the real uid.\n\
1148 Also, if the environment variable LOGNAME or USER is set,\n\
1149 that determines the value of this function.\n\n\
1150 If optional argument UID is an integer, return the login name of the user\n\
1151 with that uid, or nil if there is no such user.")
1157 /* Set up the user name info if we didn't do it before.
1158 (That can happen if Emacs is dumpable
1159 but you decide to run `temacs -l loadup' and not dump. */
1160 if (INTEGERP (Vuser_login_name
))
1164 return Vuser_login_name
;
1166 CHECK_NUMBER (uid
, 0);
1167 pw
= (struct passwd
*) getpwuid (XINT (uid
));
1168 return (pw
? build_string (pw
->pw_name
) : Qnil
);
1171 DEFUN ("user-real-login-name", Fuser_real_login_name
, Suser_real_login_name
,
1173 "Return the name of the user's real uid, as a string.\n\
1174 This ignores the environment variables LOGNAME and USER, so it differs from\n\
1175 `user-login-name' when running under `su'.")
1178 /* Set up the user name info if we didn't do it before.
1179 (That can happen if Emacs is dumpable
1180 but you decide to run `temacs -l loadup' and not dump. */
1181 if (INTEGERP (Vuser_login_name
))
1183 return Vuser_real_login_name
;
1186 DEFUN ("user-uid", Fuser_uid
, Suser_uid
, 0, 0, 0,
1187 "Return the effective uid of Emacs, as an integer.")
1190 return make_number (geteuid ());
1193 DEFUN ("user-real-uid", Fuser_real_uid
, Suser_real_uid
, 0, 0, 0,
1194 "Return the real uid of Emacs, as an integer.")
1197 return make_number (getuid ());
1200 DEFUN ("user-full-name", Fuser_full_name
, Suser_full_name
, 0, 1, 0,
1201 "Return the full name of the user logged in, as a string.\n\
1202 If the full name corresponding to Emacs's userid is not known,\n\
1203 return \"unknown\".\n\
1205 If optional argument UID is an integer, return the full name of the user\n\
1206 with that uid, or nil if there is no such user.\n\
1207 If UID is a string, return the full name of the user with that login\n\
1208 name, or nil if there is no such user.")
1213 register unsigned char *p
, *q
;
1217 return Vuser_full_name
;
1218 else if (NUMBERP (uid
))
1219 pw
= (struct passwd
*) getpwuid (XINT (uid
));
1220 else if (STRINGP (uid
))
1221 pw
= (struct passwd
*) getpwnam (XSTRING (uid
)->data
);
1223 error ("Invalid UID specification");
1228 p
= (unsigned char *) USER_FULL_NAME
;
1229 /* Chop off everything after the first comma. */
1230 q
= (unsigned char *) index (p
, ',');
1231 full
= make_string (p
, q
? q
- p
: strlen (p
));
1233 #ifdef AMPERSAND_FULL_NAME
1234 p
= XSTRING (full
)->data
;
1235 q
= (unsigned char *) index (p
, '&');
1236 /* Substitute the login name for the &, upcasing the first character. */
1239 register unsigned char *r
;
1242 login
= Fuser_login_name (make_number (pw
->pw_uid
));
1243 r
= (unsigned char *) alloca (strlen (p
) + XSTRING (login
)->size
+ 1);
1244 bcopy (p
, r
, q
- p
);
1246 strcat (r
, XSTRING (login
)->data
);
1247 r
[q
- p
] = UPCASE (r
[q
- p
]);
1249 full
= build_string (r
);
1251 #endif /* AMPERSAND_FULL_NAME */
1256 DEFUN ("system-name", Fsystem_name
, Ssystem_name
, 0, 0, 0,
1257 "Return the name of the machine you are running on, as a string.")
1260 return Vsystem_name
;
1263 /* For the benefit of callers who don't want to include lisp.h */
1268 if (STRINGP (Vsystem_name
))
1269 return (char *) XSTRING (Vsystem_name
)->data
;
1274 DEFUN ("emacs-pid", Femacs_pid
, Semacs_pid
, 0, 0, 0,
1275 "Return the process ID of Emacs, as an integer.")
1278 return make_number (getpid ());
1281 DEFUN ("current-time", Fcurrent_time
, Scurrent_time
, 0, 0, 0,
1282 "Return the current time, as the number of seconds since 1970-01-01 00:00:00.\n\
1283 The time is returned as a list of three integers. The first has the\n\
1284 most significant 16 bits of the seconds, while the second has the\n\
1285 least significant 16 bits. The third integer gives the microsecond\n\
1288 The microsecond count is zero on systems that do not provide\n\
1289 resolution finer than a second.")
1293 Lisp_Object result
[3];
1296 XSETINT (result
[0], (EMACS_SECS (t
) >> 16) & 0xffff);
1297 XSETINT (result
[1], (EMACS_SECS (t
) >> 0) & 0xffff);
1298 XSETINT (result
[2], EMACS_USECS (t
));
1300 return Flist (3, result
);
1305 lisp_time_argument (specified_time
, result
, usec
)
1306 Lisp_Object specified_time
;
1310 if (NILP (specified_time
))
1317 *usec
= EMACS_USECS (t
);
1318 *result
= EMACS_SECS (t
);
1322 return time (result
) != -1;
1326 Lisp_Object high
, low
;
1327 high
= Fcar (specified_time
);
1328 CHECK_NUMBER (high
, 0);
1329 low
= Fcdr (specified_time
);
1334 Lisp_Object usec_l
= Fcdr (low
);
1336 usec_l
= Fcar (usec_l
);
1341 CHECK_NUMBER (usec_l
, 0);
1342 *usec
= XINT (usec_l
);
1349 CHECK_NUMBER (low
, 0);
1350 *result
= (XINT (high
) << 16) + (XINT (low
) & 0xffff);
1351 return *result
>> 16 == XINT (high
);
1355 DEFUN ("float-time", Ffloat_time
, Sfloat_time
, 0, 1, 0,
1356 "Return the current time, as a float number of seconds since the epoch.\n\
1357 If an argument is given, it specifies a time to convert to float\n\
1358 instead of the current time. The argument should have the forms:\n\
1359 (HIGH . LOW) or (HIGH LOW USEC) or (HIGH LOW . USEC).\n\
1360 Thus, you can use times obtained from `current-time'\n\
1361 and from `file-attributes'.")
1363 Lisp_Object specified_time
;
1368 if (! lisp_time_argument (specified_time
, &sec
, &usec
))
1369 error ("Invalid time specification");
1371 return make_float (sec
+ usec
* 0.0000001);
1374 /* Write information into buffer S of size MAXSIZE, according to the
1375 FORMAT of length FORMAT_LEN, using time information taken from *TP.
1376 Default to Universal Time if UT is nonzero, local time otherwise.
1377 Return the number of bytes written, not including the terminating
1378 '\0'. If S is NULL, nothing will be written anywhere; so to
1379 determine how many bytes would be written, use NULL for S and
1380 ((size_t) -1) for MAXSIZE.
1382 This function behaves like emacs_strftimeu, except it allows null
1385 emacs_memftimeu (s
, maxsize
, format
, format_len
, tp
, ut
)
1390 const struct tm
*tp
;
1395 /* Loop through all the null-terminated strings in the format
1396 argument. Normally there's just one null-terminated string, but
1397 there can be arbitrarily many, concatenated together, if the
1398 format contains '\0' bytes. emacs_strftimeu stops at the first
1399 '\0' byte so we must invoke it separately for each such string. */
1408 result
= emacs_strftimeu (s
, maxsize
, format
, tp
, ut
);
1412 if (result
== 0 && s
[0] != '\0')
1417 maxsize
-= result
+ 1;
1419 len
= strlen (format
);
1420 if (len
== format_len
)
1424 format_len
-= len
+ 1;
1429 DEFUN ("format-time-string", Fformat_time_string, Sformat_time_string, 1, 3, 0,
1430 "Use FORMAT-STRING to format the time TIME, or now if omitted.\n\
1431 TIME is specified as (HIGH LOW . IGNORED) or (HIGH . LOW), as returned by\n\
1432 `current-time' or `file-attributes'.\n\
1433 The third, optional, argument UNIVERSAL, if non-nil, means describe TIME\n\
1434 as Universal Time; nil means describe TIME in the local time zone.\n\
1435 The value is a copy of FORMAT-STRING, but with certain constructs replaced\n\
1436 by text that describes the specified date and time in TIME:\n\
1438 %Y is the year, %y within the century, %C the century.\n\
1439 %G is the year corresponding to the ISO week, %g within the century.\n\
1440 %m is the numeric month.\n\
1441 %b and %h are the locale's abbreviated month name, %B the full name.\n\
1442 %d is the day of the month, zero-padded, %e is blank-padded.\n\
1443 %u is the numeric day of week from 1 (Monday) to 7, %w from 0 (Sunday) to 6.\n\
1444 %a is the locale's abbreviated name of the day of week, %A the full name.\n\
1445 %U is the week number starting on Sunday, %W starting on Monday,\n\
1446 %V according to ISO 8601.\n\
1447 %j is the day of the year.\n\
1449 %H is the hour on a 24-hour clock, %I is on a 12-hour clock, %k is like %H\n\
1450 only blank-padded, %l is like %I blank-padded.\n\
1451 %p is the locale's equivalent of either AM or PM.\n\
1452 %M is the minute.\n\
1453 %S is the second.\n\
1454 %Z is the time zone name, %z is the numeric form.\n\
1455 %s is the number of seconds since 1970-01-01 00:00:00 +0000.\n\
1457 %c is the locale's date and time format.\n\
1458 %x is the locale's \"preferred\" date format.\n\
1459 %D is like \"%m/%d/%y\".\n\
1461 %R is like \"%H:%M\", %T is like \"%H:%M:%S\", %r is like \"%I:%M:%S %p\".\n\
1462 %X is the locale's \"preferred\" time format.\n\
1464 Finally, %n is a newline, %t is a tab, %% is a literal %.\n\
1466 Certain flags and modifiers are available with some format controls.\n\
1467 The flags are `_', `-', `^' and `#'. For certain characters X,\n\
1468 %_X is like %X, but padded with blanks; %-X is like %X,\n\
1469 ut without padding. %^X is like %X but with all textual\n\
1470 characters up-cased; %#X is like %X but with letter-case of\n\
1471 all textual characters reversed.\n\
1472 %NX (where N stands for an integer) is like %X,\n\
1473 but takes up at least N (a number) positions.\n\
1474 The modifiers are `E' and `O'. For certain characters X,\n\
1475 %EX is a locale's alternative version of %X;\n\
1476 %OX is like %X, but uses the locale's number symbols.\n\
1478 For example, to produce full ISO 8601 format, use \"%Y-%m-%dT%T%z\".")
1479 (format_string, time, universal)
1482 DEFUN ("format-time-string", Fformat_time_string
, Sformat_time_string
, 1, 3, 0,
1483 0 /* See immediately above */)
1484 (format_string
, time
, universal
)
1485 Lisp_Object format_string
, time
, universal
;
1490 int ut
= ! NILP (universal
);
1492 CHECK_STRING (format_string
, 1);
1494 if (! lisp_time_argument (time
, &value
, NULL
))
1495 error ("Invalid time specification");
1497 format_string
= code_convert_string_norecord (format_string
,
1498 Vlocale_coding_system
, 1);
1500 /* This is probably enough. */
1501 size
= STRING_BYTES (XSTRING (format_string
)) * 6 + 50;
1503 tm
= ut
? gmtime (&value
) : localtime (&value
);
1505 error ("Specified time is not representable");
1507 synchronize_system_time_locale ();
1511 char *buf
= (char *) alloca (size
+ 1);
1515 result
= emacs_memftimeu (buf
, size
, XSTRING (format_string
)->data
,
1516 STRING_BYTES (XSTRING (format_string
)),
1518 if ((result
> 0 && result
< size
) || (result
== 0 && buf
[0] == '\0'))
1519 return code_convert_string_norecord (make_string (buf
, result
),
1520 Vlocale_coding_system
, 0);
1522 /* If buffer was too small, make it bigger and try again. */
1523 result
= emacs_memftimeu (NULL
, (size_t) -1,
1524 XSTRING (format_string
)->data
,
1525 STRING_BYTES (XSTRING (format_string
)),
1531 DEFUN ("decode-time", Fdecode_time
, Sdecode_time
, 0, 1, 0,
1532 "Decode a time value as (SEC MINUTE HOUR DAY MONTH YEAR DOW DST ZONE).\n\
1533 The optional SPECIFIED-TIME should be a list of (HIGH LOW . IGNORED)\n\
1534 or (HIGH . LOW), as from `current-time' and `file-attributes', or `nil'\n\
1535 to use the current time. The list has the following nine members:\n\
1536 SEC is an integer between 0 and 60; SEC is 60 for a leap second, which\n\
1537 only some operating systems support. MINUTE is an integer between 0 and 59.\n\
1538 HOUR is an integer between 0 and 23. DAY is an integer between 1 and 31.\n\
1539 MONTH is an integer between 1 and 12. YEAR is an integer indicating the\n\
1540 four-digit year. DOW is the day of week, an integer between 0 and 6, where\n\
1541 0 is Sunday. DST is t if daylight savings time is effect, otherwise nil.\n\
1542 ZONE is an integer indicating the number of seconds east of Greenwich.\n\
1543 \(Note that Common Lisp has different meanings for DOW and ZONE.)")
1545 Lisp_Object specified_time
;
1549 struct tm
*decoded_time
;
1550 Lisp_Object list_args
[9];
1552 if (! lisp_time_argument (specified_time
, &time_spec
, NULL
))
1553 error ("Invalid time specification");
1555 decoded_time
= localtime (&time_spec
);
1557 error ("Specified time is not representable");
1558 XSETFASTINT (list_args
[0], decoded_time
->tm_sec
);
1559 XSETFASTINT (list_args
[1], decoded_time
->tm_min
);
1560 XSETFASTINT (list_args
[2], decoded_time
->tm_hour
);
1561 XSETFASTINT (list_args
[3], decoded_time
->tm_mday
);
1562 XSETFASTINT (list_args
[4], decoded_time
->tm_mon
+ 1);
1563 XSETINT (list_args
[5], decoded_time
->tm_year
+ 1900);
1564 XSETFASTINT (list_args
[6], decoded_time
->tm_wday
);
1565 list_args
[7] = (decoded_time
->tm_isdst
)? Qt
: Qnil
;
1567 /* Make a copy, in case gmtime modifies the struct. */
1568 save_tm
= *decoded_time
;
1569 decoded_time
= gmtime (&time_spec
);
1570 if (decoded_time
== 0)
1571 list_args
[8] = Qnil
;
1573 XSETINT (list_args
[8], tm_diff (&save_tm
, decoded_time
));
1574 return Flist (9, list_args
);
1577 DEFUN ("encode-time", Fencode_time
, Sencode_time
, 6, MANY
, 0,
1578 "Convert SECOND, MINUTE, HOUR, DAY, MONTH, YEAR and ZONE to internal time.\n\
1579 This is the reverse operation of `decode-time', which see.\n\
1580 ZONE defaults to the current time zone rule. This can\n\
1581 be a string or t (as from `set-time-zone-rule'), or it can be a list\n\
1582 \(as from `current-time-zone') or an integer (as from `decode-time')\n\
1583 applied without consideration for daylight savings time.\n\
1585 You can pass more than 7 arguments; then the first six arguments\n\
1586 are used as SECOND through YEAR, and the *last* argument is used as ZONE.\n\
1587 The intervening arguments are ignored.\n\
1588 This feature lets (apply 'encode-time (decode-time ...)) work.\n\
1590 Out-of-range values for SEC, MINUTE, HOUR, DAY, or MONTH are allowed;\n\
1591 for example, a DAY of 0 means the day preceding the given month.\n\
1592 Year numbers less than 100 are treated just like other year numbers.\n\
1593 If you want them to stand for years in this century, you must do that yourself.")
1596 register Lisp_Object
*args
;
1600 Lisp_Object zone
= (nargs
> 6 ? args
[nargs
- 1] : Qnil
);
1602 CHECK_NUMBER (args
[0], 0); /* second */
1603 CHECK_NUMBER (args
[1], 1); /* minute */
1604 CHECK_NUMBER (args
[2], 2); /* hour */
1605 CHECK_NUMBER (args
[3], 3); /* day */
1606 CHECK_NUMBER (args
[4], 4); /* month */
1607 CHECK_NUMBER (args
[5], 5); /* year */
1609 tm
.tm_sec
= XINT (args
[0]);
1610 tm
.tm_min
= XINT (args
[1]);
1611 tm
.tm_hour
= XINT (args
[2]);
1612 tm
.tm_mday
= XINT (args
[3]);
1613 tm
.tm_mon
= XINT (args
[4]) - 1;
1614 tm
.tm_year
= XINT (args
[5]) - 1900;
1620 time
= mktime (&tm
);
1625 char **oldenv
= environ
, **newenv
;
1629 else if (STRINGP (zone
))
1630 tzstring
= (char *) XSTRING (zone
)->data
;
1631 else if (INTEGERP (zone
))
1633 int abszone
= abs (XINT (zone
));
1634 sprintf (tzbuf
, "XXX%s%d:%02d:%02d", "-" + (XINT (zone
) < 0),
1635 abszone
/ (60*60), (abszone
/60) % 60, abszone
% 60);
1639 error ("Invalid time zone specification");
1641 /* Set TZ before calling mktime; merely adjusting mktime's returned
1642 value doesn't suffice, since that would mishandle leap seconds. */
1643 set_time_zone_rule (tzstring
);
1645 time
= mktime (&tm
);
1647 /* Restore TZ to previous value. */
1651 #ifdef LOCALTIME_CACHE
1656 if (time
== (time_t) -1)
1657 error ("Specified time is not representable");
1659 return make_time (time
);
1662 DEFUN ("current-time-string", Fcurrent_time_string
, Scurrent_time_string
, 0, 1, 0,
1663 "Return the current time, as a human-readable string.\n\
1664 Programs can use this function to decode a time,\n\
1665 since the number of columns in each field is fixed.\n\
1666 The format is `Sun Sep 16 01:03:52 1973'.\n\
1667 However, see also the functions `decode-time' and `format-time-string'\n\
1668 which provide a much more powerful and general facility.\n\
1670 If an argument is given, it specifies a time to format\n\
1671 instead of the current time. The argument should have the form:\n\
1674 (HIGH LOW . IGNORED).\n\
1675 Thus, you can use times obtained from `current-time'\n\
1676 and from `file-attributes'.")
1678 Lisp_Object specified_time
;
1684 if (! lisp_time_argument (specified_time
, &value
, NULL
))
1686 tem
= (char *) ctime (&value
);
1688 strncpy (buf
, tem
, 24);
1691 return build_string (buf
);
1694 #define TM_YEAR_BASE 1900
1696 /* Yield A - B, measured in seconds.
1697 This function is copied from the GNU C Library. */
1702 /* Compute intervening leap days correctly even if year is negative.
1703 Take care to avoid int overflow in leap day calculations,
1704 but it's OK to assume that A and B are close to each other. */
1705 int a4
= (a
->tm_year
>> 2) + (TM_YEAR_BASE
>> 2) - ! (a
->tm_year
& 3);
1706 int b4
= (b
->tm_year
>> 2) + (TM_YEAR_BASE
>> 2) - ! (b
->tm_year
& 3);
1707 int a100
= a4
/ 25 - (a4
% 25 < 0);
1708 int b100
= b4
/ 25 - (b4
% 25 < 0);
1709 int a400
= a100
>> 2;
1710 int b400
= b100
>> 2;
1711 int intervening_leap_days
= (a4
- b4
) - (a100
- b100
) + (a400
- b400
);
1712 int years
= a
->tm_year
- b
->tm_year
;
1713 int days
= (365 * years
+ intervening_leap_days
1714 + (a
->tm_yday
- b
->tm_yday
));
1715 return (60 * (60 * (24 * days
+ (a
->tm_hour
- b
->tm_hour
))
1716 + (a
->tm_min
- b
->tm_min
))
1717 + (a
->tm_sec
- b
->tm_sec
));
1720 DEFUN ("current-time-zone", Fcurrent_time_zone
, Scurrent_time_zone
, 0, 1, 0,
1721 "Return the offset and name for the local time zone.\n\
1722 This returns a list of the form (OFFSET NAME).\n\
1723 OFFSET is an integer number of seconds ahead of UTC (east of Greenwich).\n\
1724 A negative value means west of Greenwich.\n\
1725 NAME is a string giving the name of the time zone.\n\
1726 If an argument is given, it specifies when the time zone offset is determined\n\
1727 instead of using the current time. The argument should have the form:\n\
1730 (HIGH LOW . IGNORED).\n\
1731 Thus, you can use times obtained from `current-time'\n\
1732 and from `file-attributes'.\n\
1734 Some operating systems cannot provide all this information to Emacs;\n\
1735 in this case, `current-time-zone' returns a list containing nil for\n\
1736 the data it can't find.")
1738 Lisp_Object specified_time
;
1744 if (lisp_time_argument (specified_time
, &value
, NULL
)
1745 && (t
= gmtime (&value
)) != 0
1746 && (gmt
= *t
, t
= localtime (&value
)) != 0)
1748 int offset
= tm_diff (t
, &gmt
);
1753 s
= (char *)t
->tm_zone
;
1754 #else /* not HAVE_TM_ZONE */
1756 if (t
->tm_isdst
== 0 || t
->tm_isdst
== 1)
1757 s
= tzname
[t
->tm_isdst
];
1759 #endif /* not HAVE_TM_ZONE */
1761 #if defined HAVE_TM_ZONE || defined HAVE_TZNAME
1764 /* On Japanese w32, we can get a Japanese string as time
1765 zone name. Don't accept that. */
1767 for (p
= s
; *p
&& isalnum (*p
); ++p
)
1776 /* No local time zone name is available; use "+-NNNN" instead. */
1777 int am
= (offset
< 0 ? -offset
: offset
) / 60;
1778 sprintf (buf
, "%c%02d%02d", (offset
< 0 ? '-' : '+'), am
/60, am
%60);
1781 return Fcons (make_number (offset
), Fcons (build_string (s
), Qnil
));
1784 return Fmake_list (make_number (2), Qnil
);
1787 /* This holds the value of `environ' produced by the previous
1788 call to Fset_time_zone_rule, or 0 if Fset_time_zone_rule
1789 has never been called. */
1790 static char **environbuf
;
1792 DEFUN ("set-time-zone-rule", Fset_time_zone_rule
, Sset_time_zone_rule
, 1, 1, 0,
1793 "Set the local time zone using TZ, a string specifying a time zone rule.\n\
1794 If TZ is nil, use implementation-defined default time zone information.\n\
1795 If TZ is t, use Universal Time.")
1803 else if (EQ (tz
, Qt
))
1807 CHECK_STRING (tz
, 0);
1808 tzstring
= (char *) XSTRING (tz
)->data
;
1811 set_time_zone_rule (tzstring
);
1814 environbuf
= environ
;
1819 #ifdef LOCALTIME_CACHE
1821 /* These two values are known to load tz files in buggy implementations,
1822 i.e. Solaris 1 executables running under either Solaris 1 or Solaris 2.
1823 Their values shouldn't matter in non-buggy implementations.
1824 We don't use string literals for these strings,
1825 since if a string in the environment is in readonly
1826 storage, it runs afoul of bugs in SVR4 and Solaris 2.3.
1827 See Sun bugs 1113095 and 1114114, ``Timezone routines
1828 improperly modify environment''. */
1830 static char set_time_zone_rule_tz1
[] = "TZ=GMT+0";
1831 static char set_time_zone_rule_tz2
[] = "TZ=GMT+1";
1835 /* Set the local time zone rule to TZSTRING.
1836 This allocates memory into `environ', which it is the caller's
1837 responsibility to free. */
1840 set_time_zone_rule (tzstring
)
1844 char **from
, **to
, **newenv
;
1846 /* Make the ENVIRON vector longer with room for TZSTRING. */
1847 for (from
= environ
; *from
; from
++)
1849 envptrs
= from
- environ
+ 2;
1850 newenv
= to
= (char **) xmalloc (envptrs
* sizeof (char *)
1851 + (tzstring
? strlen (tzstring
) + 4 : 0));
1853 /* Add TZSTRING to the end of environ, as a value for TZ. */
1856 char *t
= (char *) (to
+ envptrs
);
1858 strcat (t
, tzstring
);
1862 /* Copy the old environ vector elements into NEWENV,
1863 but don't copy the TZ variable.
1864 So we have only one definition of TZ, which came from TZSTRING. */
1865 for (from
= environ
; *from
; from
++)
1866 if (strncmp (*from
, "TZ=", 3) != 0)
1872 /* If we do have a TZSTRING, NEWENV points to the vector slot where
1873 the TZ variable is stored. If we do not have a TZSTRING,
1874 TO points to the vector slot which has the terminating null. */
1876 #ifdef LOCALTIME_CACHE
1878 /* In SunOS 4.1.3_U1 and 4.1.4, if TZ has a value like
1879 "US/Pacific" that loads a tz file, then changes to a value like
1880 "XXX0" that does not load a tz file, and then changes back to
1881 its original value, the last change is (incorrectly) ignored.
1882 Also, if TZ changes twice in succession to values that do
1883 not load a tz file, tzset can dump core (see Sun bug#1225179).
1884 The following code works around these bugs. */
1888 /* Temporarily set TZ to a value that loads a tz file
1889 and that differs from tzstring. */
1891 *newenv
= (strcmp (tzstring
, set_time_zone_rule_tz1
+ 3) == 0
1892 ? set_time_zone_rule_tz2
: set_time_zone_rule_tz1
);
1898 /* The implied tzstring is unknown, so temporarily set TZ to
1899 two different values that each load a tz file. */
1900 *to
= set_time_zone_rule_tz1
;
1903 *to
= set_time_zone_rule_tz2
;
1908 /* Now TZ has the desired value, and tzset can be invoked safely. */
1915 /* Insert NARGS Lisp objects in the array ARGS by calling INSERT_FUNC
1916 (if a type of object is Lisp_Int) or INSERT_FROM_STRING_FUNC (if a
1917 type of object is Lisp_String). INHERIT is passed to
1918 INSERT_FROM_STRING_FUNC as the last argument. */
1921 general_insert_function (insert_func
, insert_from_string_func
,
1922 inherit
, nargs
, args
)
1923 void (*insert_func
) P_ ((unsigned char *, int));
1924 void (*insert_from_string_func
) P_ ((Lisp_Object
, int, int, int, int, int));
1926 register Lisp_Object
*args
;
1928 register int argnum
;
1929 register Lisp_Object val
;
1931 for (argnum
= 0; argnum
< nargs
; argnum
++)
1937 unsigned char str
[MAX_MULTIBYTE_LENGTH
];
1940 if (!NILP (current_buffer
->enable_multibyte_characters
))
1941 len
= CHAR_STRING (XFASTINT (val
), str
);
1944 str
[0] = (SINGLE_BYTE_CHAR_P (XINT (val
))
1946 : multibyte_char_to_unibyte (XINT (val
), Qnil
));
1949 (*insert_func
) (str
, len
);
1951 else if (STRINGP (val
))
1953 (*insert_from_string_func
) (val
, 0, 0,
1954 XSTRING (val
)->size
,
1955 STRING_BYTES (XSTRING (val
)),
1960 val
= wrong_type_argument (Qchar_or_string_p
, val
);
1974 /* Callers passing one argument to Finsert need not gcpro the
1975 argument "array", since the only element of the array will
1976 not be used after calling insert or insert_from_string, so
1977 we don't care if it gets trashed. */
1979 DEFUN ("insert", Finsert
, Sinsert
, 0, MANY
, 0,
1980 "Insert the arguments, either strings or characters, at point.\n\
1981 Point and before-insertion markers move forward to end up\n\
1982 after the inserted text.\n\
1983 Any other markers at the point of insertion remain before the text.\n\
1985 If the current buffer is multibyte, unibyte strings are converted\n\
1986 to multibyte for insertion (see `unibyte-char-to-multibyte').\n\
1987 If the current buffer is unibyte, multibyte strings are converted\n\
1988 to unibyte for insertion.")
1991 register Lisp_Object
*args
;
1993 general_insert_function (insert
, insert_from_string
, 0, nargs
, args
);
1997 DEFUN ("insert-and-inherit", Finsert_and_inherit
, Sinsert_and_inherit
,
1999 "Insert the arguments at point, inheriting properties from adjoining text.\n\
2000 Point and before-insertion markers move forward to end up\n\
2001 after the inserted text.\n\
2002 Any other markers at the point of insertion remain before the text.\n\
2004 If the current buffer is multibyte, unibyte strings are converted\n\
2005 to multibyte for insertion (see `unibyte-char-to-multibyte').\n\
2006 If the current buffer is unibyte, multibyte strings are converted\n\
2007 to unibyte for insertion.")
2010 register Lisp_Object
*args
;
2012 general_insert_function (insert_and_inherit
, insert_from_string
, 1,
2017 DEFUN ("insert-before-markers", Finsert_before_markers
, Sinsert_before_markers
, 0, MANY
, 0,
2018 "Insert strings or characters at point, relocating markers after the text.\n\
2019 Point and markers move forward to end up after the inserted text.\n\
2021 If the current buffer is multibyte, unibyte strings are converted\n\
2022 to multibyte for insertion (see `unibyte-char-to-multibyte').\n\
2023 If the current buffer is unibyte, multibyte strings are converted\n\
2024 to unibyte for insertion.")
2027 register Lisp_Object
*args
;
2029 general_insert_function (insert_before_markers
,
2030 insert_from_string_before_markers
, 0,
2035 DEFUN ("insert-before-markers-and-inherit", Finsert_and_inherit_before_markers
,
2036 Sinsert_and_inherit_before_markers
, 0, MANY
, 0,
2037 "Insert text at point, relocating markers and inheriting properties.\n\
2038 Point and markers move forward to end up after the inserted text.\n\
2040 If the current buffer is multibyte, unibyte strings are converted\n\
2041 to multibyte for insertion (see `unibyte-char-to-multibyte').\n\
2042 If the current buffer is unibyte, multibyte strings are converted\n\
2043 to unibyte for insertion.")
2046 register Lisp_Object
*args
;
2048 general_insert_function (insert_before_markers_and_inherit
,
2049 insert_from_string_before_markers
, 1,
2054 DEFUN ("insert-char", Finsert_char
, Sinsert_char
, 2, 3, 0,
2055 "Insert COUNT (second arg) copies of CHARACTER (first arg).\n\
2056 Both arguments are required.\n\
2057 Point, and before-insertion markers, are relocated as in the function `insert'.\n\
2058 The optional third arg INHERIT, if non-nil, says to inherit text properties\n\
2059 from adjoining text, if those properties are sticky.")
2060 (character
, count
, inherit
)
2061 Lisp_Object character
, count
, inherit
;
2063 register unsigned char *string
;
2064 register int strlen
;
2067 unsigned char str
[MAX_MULTIBYTE_LENGTH
];
2069 CHECK_NUMBER (character
, 0);
2070 CHECK_NUMBER (count
, 1);
2072 if (!NILP (current_buffer
->enable_multibyte_characters
))
2073 len
= CHAR_STRING (XFASTINT (character
), str
);
2075 str
[0] = XFASTINT (character
), len
= 1;
2076 n
= XINT (count
) * len
;
2079 strlen
= min (n
, 256 * len
);
2080 string
= (unsigned char *) alloca (strlen
);
2081 for (i
= 0; i
< strlen
; i
++)
2082 string
[i
] = str
[i
% len
];
2086 if (!NILP (inherit
))
2087 insert_and_inherit (string
, strlen
);
2089 insert (string
, strlen
);
2094 if (!NILP (inherit
))
2095 insert_and_inherit (string
, n
);
2103 /* Making strings from buffer contents. */
2105 /* Return a Lisp_String containing the text of the current buffer from
2106 START to END. If text properties are in use and the current buffer
2107 has properties in the range specified, the resulting string will also
2108 have them, if PROPS is nonzero.
2110 We don't want to use plain old make_string here, because it calls
2111 make_uninit_string, which can cause the buffer arena to be
2112 compacted. make_string has no way of knowing that the data has
2113 been moved, and thus copies the wrong data into the string. This
2114 doesn't effect most of the other users of make_string, so it should
2115 be left as is. But we should use this function when conjuring
2116 buffer substrings. */
2119 make_buffer_string (start
, end
, props
)
2123 int start_byte
= CHAR_TO_BYTE (start
);
2124 int end_byte
= CHAR_TO_BYTE (end
);
2126 return make_buffer_string_both (start
, start_byte
, end
, end_byte
, props
);
2129 /* Return a Lisp_String containing the text of the current buffer from
2130 START / START_BYTE to END / END_BYTE.
2132 If text properties are in use and the current buffer
2133 has properties in the range specified, the resulting string will also
2134 have them, if PROPS is nonzero.
2136 We don't want to use plain old make_string here, because it calls
2137 make_uninit_string, which can cause the buffer arena to be
2138 compacted. make_string has no way of knowing that the data has
2139 been moved, and thus copies the wrong data into the string. This
2140 doesn't effect most of the other users of make_string, so it should
2141 be left as is. But we should use this function when conjuring
2142 buffer substrings. */
2145 make_buffer_string_both (start
, start_byte
, end
, end_byte
, props
)
2146 int start
, start_byte
, end
, end_byte
;
2149 Lisp_Object result
, tem
, tem1
;
2151 if (start
< GPT
&& GPT
< end
)
2154 if (! NILP (current_buffer
->enable_multibyte_characters
))
2155 result
= make_uninit_multibyte_string (end
- start
, end_byte
- start_byte
);
2157 result
= make_uninit_string (end
- start
);
2158 bcopy (BYTE_POS_ADDR (start_byte
), XSTRING (result
)->data
,
2159 end_byte
- start_byte
);
2161 /* If desired, update and copy the text properties. */
2164 update_buffer_properties (start
, end
);
2166 tem
= Fnext_property_change (make_number (start
), Qnil
, make_number (end
));
2167 tem1
= Ftext_properties_at (make_number (start
), Qnil
);
2169 if (XINT (tem
) != end
|| !NILP (tem1
))
2170 copy_intervals_to_string (result
, current_buffer
, start
,
2177 /* Call Vbuffer_access_fontify_functions for the range START ... END
2178 in the current buffer, if necessary. */
2181 update_buffer_properties (start
, end
)
2184 /* If this buffer has some access functions,
2185 call them, specifying the range of the buffer being accessed. */
2186 if (!NILP (Vbuffer_access_fontify_functions
))
2188 Lisp_Object args
[3];
2191 args
[0] = Qbuffer_access_fontify_functions
;
2192 XSETINT (args
[1], start
);
2193 XSETINT (args
[2], end
);
2195 /* But don't call them if we can tell that the work
2196 has already been done. */
2197 if (!NILP (Vbuffer_access_fontified_property
))
2199 tem
= Ftext_property_any (args
[1], args
[2],
2200 Vbuffer_access_fontified_property
,
2203 Frun_hook_with_args (3, args
);
2206 Frun_hook_with_args (3, args
);
2210 DEFUN ("buffer-substring", Fbuffer_substring
, Sbuffer_substring
, 2, 2, 0,
2211 "Return the contents of part of the current buffer as a string.\n\
2212 The two arguments START and END are character positions;\n\
2213 they can be in either order.\n\
2214 The string returned is multibyte if the buffer is multibyte.\n\
2216 This function copies the text properties of that part of the buffer\n\
2217 into the result string; if you don't want the text properties,\n\
2218 use `buffer-substring-no-properties' instead.")
2220 Lisp_Object start
, end
;
2224 validate_region (&start
, &end
);
2228 return make_buffer_string (b
, e
, 1);
2231 DEFUN ("buffer-substring-no-properties", Fbuffer_substring_no_properties
,
2232 Sbuffer_substring_no_properties
, 2, 2, 0,
2233 "Return the characters of part of the buffer, without the text properties.\n\
2234 The two arguments START and END are character positions;\n\
2235 they can be in either order.")
2237 Lisp_Object start
, end
;
2241 validate_region (&start
, &end
);
2245 return make_buffer_string (b
, e
, 0);
2248 DEFUN ("buffer-string", Fbuffer_string
, Sbuffer_string
, 0, 0, 0,
2249 "Return the contents of the current buffer as a string.\n\
2250 If narrowing is in effect, this function returns only the visible part\n\
2254 return make_buffer_string (BEGV
, ZV
, 1);
2257 DEFUN ("insert-buffer-substring", Finsert_buffer_substring
, Sinsert_buffer_substring
,
2259 "Insert before point a substring of the contents of buffer BUFFER.\n\
2260 BUFFER may be a buffer or a buffer name.\n\
2261 Arguments START and END are character numbers specifying the substring.\n\
2262 They default to the beginning and the end of BUFFER.")
2264 Lisp_Object buf
, start
, end
;
2266 register int b
, e
, temp
;
2267 register struct buffer
*bp
, *obuf
;
2270 buffer
= Fget_buffer (buf
);
2273 bp
= XBUFFER (buffer
);
2274 if (NILP (bp
->name
))
2275 error ("Selecting deleted buffer");
2281 CHECK_NUMBER_COERCE_MARKER (start
, 0);
2288 CHECK_NUMBER_COERCE_MARKER (end
, 1);
2293 temp
= b
, b
= e
, e
= temp
;
2295 if (!(BUF_BEGV (bp
) <= b
&& e
<= BUF_ZV (bp
)))
2296 args_out_of_range (start
, end
);
2298 obuf
= current_buffer
;
2299 set_buffer_internal_1 (bp
);
2300 update_buffer_properties (b
, e
);
2301 set_buffer_internal_1 (obuf
);
2303 insert_from_buffer (bp
, b
, e
- b
, 0);
2307 DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings
, Scompare_buffer_substrings
,
2309 "Compare two substrings of two buffers; return result as number.\n\
2310 the value is -N if first string is less after N-1 chars,\n\
2311 +N if first string is greater after N-1 chars, or 0 if strings match.\n\
2312 Each substring is represented as three arguments: BUFFER, START and END.\n\
2313 That makes six args in all, three for each substring.\n\n\
2314 The value of `case-fold-search' in the current buffer\n\
2315 determines whether case is significant or ignored.")
2316 (buffer1
, start1
, end1
, buffer2
, start2
, end2
)
2317 Lisp_Object buffer1
, start1
, end1
, buffer2
, start2
, end2
;
2319 register int begp1
, endp1
, begp2
, endp2
, temp
;
2320 register struct buffer
*bp1
, *bp2
;
2321 register Lisp_Object
*trt
2322 = (!NILP (current_buffer
->case_fold_search
)
2323 ? XCHAR_TABLE (current_buffer
->case_canon_table
)->contents
: 0);
2325 int i1
, i2
, i1_byte
, i2_byte
;
2327 /* Find the first buffer and its substring. */
2330 bp1
= current_buffer
;
2334 buf1
= Fget_buffer (buffer1
);
2337 bp1
= XBUFFER (buf1
);
2338 if (NILP (bp1
->name
))
2339 error ("Selecting deleted buffer");
2343 begp1
= BUF_BEGV (bp1
);
2346 CHECK_NUMBER_COERCE_MARKER (start1
, 1);
2347 begp1
= XINT (start1
);
2350 endp1
= BUF_ZV (bp1
);
2353 CHECK_NUMBER_COERCE_MARKER (end1
, 2);
2354 endp1
= XINT (end1
);
2358 temp
= begp1
, begp1
= endp1
, endp1
= temp
;
2360 if (!(BUF_BEGV (bp1
) <= begp1
2362 && endp1
<= BUF_ZV (bp1
)))
2363 args_out_of_range (start1
, end1
);
2365 /* Likewise for second substring. */
2368 bp2
= current_buffer
;
2372 buf2
= Fget_buffer (buffer2
);
2375 bp2
= XBUFFER (buf2
);
2376 if (NILP (bp2
->name
))
2377 error ("Selecting deleted buffer");
2381 begp2
= BUF_BEGV (bp2
);
2384 CHECK_NUMBER_COERCE_MARKER (start2
, 4);
2385 begp2
= XINT (start2
);
2388 endp2
= BUF_ZV (bp2
);
2391 CHECK_NUMBER_COERCE_MARKER (end2
, 5);
2392 endp2
= XINT (end2
);
2396 temp
= begp2
, begp2
= endp2
, endp2
= temp
;
2398 if (!(BUF_BEGV (bp2
) <= begp2
2400 && endp2
<= BUF_ZV (bp2
)))
2401 args_out_of_range (start2
, end2
);
2405 i1_byte
= buf_charpos_to_bytepos (bp1
, i1
);
2406 i2_byte
= buf_charpos_to_bytepos (bp2
, i2
);
2408 while (i1
< endp1
&& i2
< endp2
)
2410 /* When we find a mismatch, we must compare the
2411 characters, not just the bytes. */
2414 if (! NILP (bp1
->enable_multibyte_characters
))
2416 c1
= BUF_FETCH_MULTIBYTE_CHAR (bp1
, i1_byte
);
2417 BUF_INC_POS (bp1
, i1_byte
);
2422 c1
= BUF_FETCH_BYTE (bp1
, i1
);
2423 c1
= unibyte_char_to_multibyte (c1
);
2427 if (! NILP (bp2
->enable_multibyte_characters
))
2429 c2
= BUF_FETCH_MULTIBYTE_CHAR (bp2
, i2_byte
);
2430 BUF_INC_POS (bp2
, i2_byte
);
2435 c2
= BUF_FETCH_BYTE (bp2
, i2
);
2436 c2
= unibyte_char_to_multibyte (c2
);
2442 c1
= XINT (trt
[c1
]);
2443 c2
= XINT (trt
[c2
]);
2446 return make_number (- 1 - chars
);
2448 return make_number (chars
+ 1);
2453 /* The strings match as far as they go.
2454 If one is shorter, that one is less. */
2455 if (chars
< endp1
- begp1
)
2456 return make_number (chars
+ 1);
2457 else if (chars
< endp2
- begp2
)
2458 return make_number (- chars
- 1);
2460 /* Same length too => they are equal. */
2461 return make_number (0);
2465 subst_char_in_region_unwind (arg
)
2468 return current_buffer
->undo_list
= arg
;
2472 subst_char_in_region_unwind_1 (arg
)
2475 return current_buffer
->filename
= arg
;
2478 DEFUN ("subst-char-in-region", Fsubst_char_in_region
,
2479 Ssubst_char_in_region
, 4, 5, 0,
2480 "From START to END, replace FROMCHAR with TOCHAR each time it occurs.\n\
2481 If optional arg NOUNDO is non-nil, don't record this change for undo\n\
2482 and don't mark the buffer as really changed.\n\
2483 Both characters must have the same length of multi-byte form.")
2484 (start
, end
, fromchar
, tochar
, noundo
)
2485 Lisp_Object start
, end
, fromchar
, tochar
, noundo
;
2487 register int pos
, pos_byte
, stop
, i
, len
, end_byte
;
2489 unsigned char fromstr
[MAX_MULTIBYTE_LENGTH
], tostr
[MAX_MULTIBYTE_LENGTH
];
2491 int count
= specpdl_ptr
- specpdl
;
2492 #define COMBINING_NO 0
2493 #define COMBINING_BEFORE 1
2494 #define COMBINING_AFTER 2
2495 #define COMBINING_BOTH (COMBINING_BEFORE | COMBINING_AFTER)
2496 int maybe_byte_combining
= COMBINING_NO
;
2497 int last_changed
= 0;
2498 int multibyte_p
= !NILP (current_buffer
->enable_multibyte_characters
);
2500 validate_region (&start
, &end
);
2501 CHECK_NUMBER (fromchar
, 2);
2502 CHECK_NUMBER (tochar
, 3);
2506 len
= CHAR_STRING (XFASTINT (fromchar
), fromstr
);
2507 if (CHAR_STRING (XFASTINT (tochar
), tostr
) != len
)
2508 error ("Characters in subst-char-in-region have different byte-lengths");
2509 if (!ASCII_BYTE_P (*tostr
))
2511 /* If *TOSTR is in the range 0x80..0x9F and TOCHAR is not a
2512 complete multibyte character, it may be combined with the
2513 after bytes. If it is in the range 0xA0..0xFF, it may be
2514 combined with the before and after bytes. */
2515 if (!CHAR_HEAD_P (*tostr
))
2516 maybe_byte_combining
= COMBINING_BOTH
;
2517 else if (BYTES_BY_CHAR_HEAD (*tostr
) > len
)
2518 maybe_byte_combining
= COMBINING_AFTER
;
2524 fromstr
[0] = XFASTINT (fromchar
);
2525 tostr
[0] = XFASTINT (tochar
);
2529 pos_byte
= CHAR_TO_BYTE (pos
);
2530 stop
= CHAR_TO_BYTE (XINT (end
));
2533 /* If we don't want undo, turn off putting stuff on the list.
2534 That's faster than getting rid of things,
2535 and it prevents even the entry for a first change.
2536 Also inhibit locking the file. */
2539 record_unwind_protect (subst_char_in_region_unwind
,
2540 current_buffer
->undo_list
);
2541 current_buffer
->undo_list
= Qt
;
2542 /* Don't do file-locking. */
2543 record_unwind_protect (subst_char_in_region_unwind_1
,
2544 current_buffer
->filename
);
2545 current_buffer
->filename
= Qnil
;
2548 if (pos_byte
< GPT_BYTE
)
2549 stop
= min (stop
, GPT_BYTE
);
2552 int pos_byte_next
= pos_byte
;
2554 if (pos_byte
>= stop
)
2556 if (pos_byte
>= end_byte
) break;
2559 p
= BYTE_POS_ADDR (pos_byte
);
2561 INC_POS (pos_byte_next
);
2564 if (pos_byte_next
- pos_byte
== len
2565 && p
[0] == fromstr
[0]
2567 || (p
[1] == fromstr
[1]
2568 && (len
== 2 || (p
[2] == fromstr
[2]
2569 && (len
== 3 || p
[3] == fromstr
[3]))))))
2574 modify_region (current_buffer
, changed
, XINT (end
));
2576 if (! NILP (noundo
))
2578 if (MODIFF
- 1 == SAVE_MODIFF
)
2580 if (MODIFF
- 1 == current_buffer
->auto_save_modified
)
2581 current_buffer
->auto_save_modified
++;
2585 /* Take care of the case where the new character
2586 combines with neighboring bytes. */
2587 if (maybe_byte_combining
2588 && (maybe_byte_combining
== COMBINING_AFTER
2589 ? (pos_byte_next
< Z_BYTE
2590 && ! CHAR_HEAD_P (FETCH_BYTE (pos_byte_next
)))
2591 : ((pos_byte_next
< Z_BYTE
2592 && ! CHAR_HEAD_P (FETCH_BYTE (pos_byte_next
)))
2593 || (pos_byte
> BEG_BYTE
2594 && ! ASCII_BYTE_P (FETCH_BYTE (pos_byte
- 1))))))
2596 Lisp_Object tem
, string
;
2598 struct gcpro gcpro1
;
2600 tem
= current_buffer
->undo_list
;
2603 /* Make a multibyte string containing this single character. */
2604 string
= make_multibyte_string (tostr
, 1, len
);
2605 /* replace_range is less efficient, because it moves the gap,
2606 but it handles combining correctly. */
2607 replace_range (pos
, pos
+ 1, string
,
2609 pos_byte_next
= CHAR_TO_BYTE (pos
);
2610 if (pos_byte_next
> pos_byte
)
2611 /* Before combining happened. We should not increment
2612 POS. So, to cancel the later increment of POS,
2616 INC_POS (pos_byte_next
);
2618 if (! NILP (noundo
))
2619 current_buffer
->undo_list
= tem
;
2626 record_change (pos
, 1);
2627 for (i
= 0; i
< len
; i
++) *p
++ = tostr
[i
];
2629 last_changed
= pos
+ 1;
2631 pos_byte
= pos_byte_next
;
2637 signal_after_change (changed
,
2638 last_changed
- changed
, last_changed
- changed
);
2639 update_compositions (changed
, last_changed
, CHECK_ALL
);
2642 unbind_to (count
, Qnil
);
2646 DEFUN ("translate-region", Ftranslate_region
, Stranslate_region
, 3, 3, 0,
2647 "From START to END, translate characters according to TABLE.\n\
2648 TABLE is a string; the Nth character in it is the mapping\n\
2649 for the character with code N.\n\
2650 This function does not alter multibyte characters.\n\
2651 It returns the number of characters changed.")
2655 register Lisp_Object table
;
2657 register int pos_byte
, stop
; /* Limits of the region. */
2658 register unsigned char *tt
; /* Trans table. */
2659 register int nc
; /* New character. */
2660 int cnt
; /* Number of changes made. */
2661 int size
; /* Size of translate table. */
2663 int multibyte
= !NILP (current_buffer
->enable_multibyte_characters
);
2665 validate_region (&start
, &end
);
2666 CHECK_STRING (table
, 2);
2668 size
= STRING_BYTES (XSTRING (table
));
2669 tt
= XSTRING (table
)->data
;
2671 pos_byte
= CHAR_TO_BYTE (XINT (start
));
2672 stop
= CHAR_TO_BYTE (XINT (end
));
2673 modify_region (current_buffer
, XINT (start
), XINT (end
));
2677 for (; pos_byte
< stop
; )
2679 register unsigned char *p
= BYTE_POS_ADDR (pos_byte
);
2685 oc
= STRING_CHAR_AND_LENGTH (p
, stop
- pos_byte
, len
);
2688 pos_byte_next
= pos_byte
+ len
;
2689 if (oc
< size
&& len
== 1)
2694 /* Take care of the case where the new character
2695 combines with neighboring bytes. */
2696 if (!ASCII_BYTE_P (nc
)
2697 && (CHAR_HEAD_P (nc
)
2698 ? ! CHAR_HEAD_P (FETCH_BYTE (pos_byte
+ 1))
2699 : (pos_byte
> BEG_BYTE
2700 && ! ASCII_BYTE_P (FETCH_BYTE (pos_byte
- 1)))))
2704 string
= make_multibyte_string (tt
+ oc
, 1, 1);
2705 /* This is less efficient, because it moves the gap,
2706 but it handles combining correctly. */
2707 replace_range (pos
, pos
+ 1, string
,
2709 pos_byte_next
= CHAR_TO_BYTE (pos
);
2710 if (pos_byte_next
> pos_byte
)
2711 /* Before combining happened. We should not
2712 increment POS. So, to cancel the later
2713 increment of POS, we decrease it now. */
2716 INC_POS (pos_byte_next
);
2720 record_change (pos
, 1);
2722 signal_after_change (pos
, 1, 1);
2723 update_compositions (pos
, pos
+ 1, CHECK_BORDER
);
2728 pos_byte
= pos_byte_next
;
2732 return make_number (cnt
);
2735 DEFUN ("delete-region", Fdelete_region
, Sdelete_region
, 2, 2, "r",
2736 "Delete the text between point and mark.\n\
2737 When called from a program, expects two arguments,\n\
2738 positions (integers or markers) specifying the stretch to be deleted.")
2740 Lisp_Object start
, end
;
2742 validate_region (&start
, &end
);
2743 del_range (XINT (start
), XINT (end
));
2747 DEFUN ("delete-and-extract-region", Fdelete_and_extract_region
,
2748 Sdelete_and_extract_region
, 2, 2, 0,
2749 "Delete the text between START and END and return it.")
2751 Lisp_Object start
, end
;
2753 validate_region (&start
, &end
);
2754 return del_range_1 (XINT (start
), XINT (end
), 1, 1);
2757 DEFUN ("widen", Fwiden
, Swiden
, 0, 0, "",
2758 "Remove restrictions (narrowing) from current buffer.\n\
2759 This allows the buffer's full text to be seen and edited.")
2762 if (BEG
!= BEGV
|| Z
!= ZV
)
2763 current_buffer
->clip_changed
= 1;
2765 BEGV_BYTE
= BEG_BYTE
;
2766 SET_BUF_ZV_BOTH (current_buffer
, Z
, Z_BYTE
);
2767 /* Changing the buffer bounds invalidates any recorded current column. */
2768 invalidate_current_column ();
2772 DEFUN ("narrow-to-region", Fnarrow_to_region
, Snarrow_to_region
, 2, 2, "r",
2773 "Restrict editing in this buffer to the current region.\n\
2774 The rest of the text becomes temporarily invisible and untouchable\n\
2775 but is not deleted; if you save the buffer in a file, the invisible\n\
2776 text is included in the file. \\[widen] makes all visible again.\n\
2777 See also `save-restriction'.\n\
2779 When calling from a program, pass two arguments; positions (integers\n\
2780 or markers) bounding the text that should remain visible.")
2782 register Lisp_Object start
, end
;
2784 CHECK_NUMBER_COERCE_MARKER (start
, 0);
2785 CHECK_NUMBER_COERCE_MARKER (end
, 1);
2787 if (XINT (start
) > XINT (end
))
2790 tem
= start
; start
= end
; end
= tem
;
2793 if (!(BEG
<= XINT (start
) && XINT (start
) <= XINT (end
) && XINT (end
) <= Z
))
2794 args_out_of_range (start
, end
);
2796 if (BEGV
!= XFASTINT (start
) || ZV
!= XFASTINT (end
))
2797 current_buffer
->clip_changed
= 1;
2799 SET_BUF_BEGV (current_buffer
, XFASTINT (start
));
2800 SET_BUF_ZV (current_buffer
, XFASTINT (end
));
2801 if (PT
< XFASTINT (start
))
2802 SET_PT (XFASTINT (start
));
2803 if (PT
> XFASTINT (end
))
2804 SET_PT (XFASTINT (end
));
2805 /* Changing the buffer bounds invalidates any recorded current column. */
2806 invalidate_current_column ();
2811 save_restriction_save ()
2813 if (BEGV
== BEG
&& ZV
== Z
)
2814 /* The common case that the buffer isn't narrowed.
2815 We return just the buffer object, which save_restriction_restore
2816 recognizes as meaning `no restriction'. */
2817 return Fcurrent_buffer ();
2819 /* We have to save a restriction, so return a pair of markers, one
2820 for the beginning and one for the end. */
2822 Lisp_Object beg
, end
;
2824 beg
= buildmark (BEGV
, BEGV_BYTE
);
2825 end
= buildmark (ZV
, ZV_BYTE
);
2827 /* END must move forward if text is inserted at its exact location. */
2828 XMARKER(end
)->insertion_type
= 1;
2830 return Fcons (beg
, end
);
2835 save_restriction_restore (data
)
2839 /* A pair of marks bounding a saved restriction. */
2841 struct Lisp_Marker
*beg
= XMARKER (XCAR (data
));
2842 struct Lisp_Marker
*end
= XMARKER (XCDR (data
));
2843 struct buffer
*buf
= beg
->buffer
; /* END should have the same buffer. */
2845 if (beg
->charpos
!= BUF_BEGV(buf
) || end
->charpos
!= BUF_ZV(buf
))
2846 /* The restriction has changed from the saved one, so restore
2847 the saved restriction. */
2849 int pt
= BUF_PT (buf
);
2851 SET_BUF_BEGV_BOTH (buf
, beg
->charpos
, beg
->bytepos
);
2852 SET_BUF_ZV_BOTH (buf
, end
->charpos
, end
->bytepos
);
2854 if (pt
< beg
->charpos
|| pt
> end
->charpos
)
2855 /* The point is outside the new visible range, move it inside. */
2856 SET_BUF_PT_BOTH (buf
,
2857 clip_to_bounds (beg
->charpos
, pt
, end
->charpos
),
2858 clip_to_bounds (beg
->bytepos
, BUF_PT_BYTE(buf
),
2861 buf
->clip_changed
= 1; /* Remember that the narrowing changed. */
2865 /* A buffer, which means that there was no old restriction. */
2867 struct buffer
*buf
= XBUFFER (data
);
2869 if (BUF_BEGV(buf
) != BUF_BEG(buf
) || BUF_ZV(buf
) != BUF_Z(buf
))
2870 /* The buffer has been narrowed, get rid of the narrowing. */
2872 SET_BUF_BEGV_BOTH (buf
, BUF_BEG(buf
), BUF_BEG_BYTE(buf
));
2873 SET_BUF_ZV_BOTH (buf
, BUF_Z(buf
), BUF_Z_BYTE(buf
));
2875 buf
->clip_changed
= 1; /* Remember that the narrowing changed. */
2882 DEFUN ("save-restriction", Fsave_restriction
, Ssave_restriction
, 0, UNEVALLED
, 0,
2883 "Execute BODY, saving and restoring current buffer's restrictions.\n\
2884 The buffer's restrictions make parts of the beginning and end invisible.\n\
2885 \(They are set up with `narrow-to-region' and eliminated with `widen'.)\n\
2886 This special form, `save-restriction', saves the current buffer's restrictions\n\
2887 when it is entered, and restores them when it is exited.\n\
2888 So any `narrow-to-region' within BODY lasts only until the end of the form.\n\
2889 The old restrictions settings are restored\n\
2890 even in case of abnormal exit (throw or error).\n\
2892 The value returned is the value of the last form in BODY.\n\
2894 Note: if you are using both `save-excursion' and `save-restriction',\n\
2895 use `save-excursion' outermost:\n\
2896 (save-excursion (save-restriction ...))")
2900 register Lisp_Object val
;
2901 int count
= specpdl_ptr
- specpdl
;
2903 record_unwind_protect (save_restriction_restore
, save_restriction_save ());
2904 val
= Fprogn (body
);
2905 return unbind_to (count
, val
);
2910 /* Buffer for the most recent text displayed by Fmessage. */
2911 static char *message_text
;
2913 /* Allocated length of that buffer. */
2914 static int message_length
;
2916 #endif /* not HAVE_MENUS */
2918 DEFUN ("message", Fmessage
, Smessage
, 1, MANY
, 0,
2919 "Print a one-line message at the bottom of the screen.\n\
2920 The first argument is a format control string, and the rest are data\n\
2921 to be formatted under control of the string. See `format' for details.\n\
2923 If the first argument is nil, clear any existing message; let the\n\
2924 minibuffer contents show.")
2936 register Lisp_Object val
;
2937 val
= Fformat (nargs
, args
);
2938 message3 (val
, STRING_BYTES (XSTRING (val
)), STRING_MULTIBYTE (val
));
2943 DEFUN ("message-box", Fmessage_box
, Smessage_box
, 1, MANY
, 0,
2944 "Display a message, in a dialog box if possible.\n\
2945 If a dialog box is not available, use the echo area.\n\
2946 The first argument is a format control string, and the rest are data\n\
2947 to be formatted under control of the string. See `format' for details.\n\
2949 If the first argument is nil, clear any existing message; let the\n\
2950 minibuffer contents show.")
2962 register Lisp_Object val
;
2963 val
= Fformat (nargs
, args
);
2966 Lisp_Object pane
, menu
, obj
;
2967 struct gcpro gcpro1
;
2968 pane
= Fcons (Fcons (build_string ("OK"), Qt
), Qnil
);
2970 menu
= Fcons (val
, pane
);
2971 obj
= Fx_popup_dialog (Qt
, menu
);
2975 #else /* not HAVE_MENUS */
2976 /* Copy the data so that it won't move when we GC. */
2979 message_text
= (char *)xmalloc (80);
2980 message_length
= 80;
2982 if (STRING_BYTES (XSTRING (val
)) > message_length
)
2984 message_length
= STRING_BYTES (XSTRING (val
));
2985 message_text
= (char *)xrealloc (message_text
, message_length
);
2987 bcopy (XSTRING (val
)->data
, message_text
, STRING_BYTES (XSTRING (val
)));
2988 message2 (message_text
, STRING_BYTES (XSTRING (val
)),
2989 STRING_MULTIBYTE (val
));
2991 #endif /* not HAVE_MENUS */
2995 extern Lisp_Object last_nonmenu_event
;
2998 DEFUN ("message-or-box", Fmessage_or_box
, Smessage_or_box
, 1, MANY
, 0,
2999 "Display a message in a dialog box or in the echo area.\n\
3000 If this command was invoked with the mouse, use a dialog box if\n\
3001 `use-dialog-box' is non-nil.\n\
3002 Otherwise, use the echo area.\n\
3003 The first argument is a format control string, and the rest are data\n\
3004 to be formatted under control of the string. See `format' for details.\n\
3006 If the first argument is nil, clear any existing message; let the\n\
3007 minibuffer contents show.")
3013 if ((NILP (last_nonmenu_event
) || CONSP (last_nonmenu_event
))
3015 return Fmessage_box (nargs
, args
);
3017 return Fmessage (nargs
, args
);
3020 DEFUN ("current-message", Fcurrent_message
, Scurrent_message
, 0, 0, 0,
3021 "Return the string currently displayed in the echo area, or nil if none.")
3024 return current_message ();
3028 DEFUN ("propertize", Fpropertize
, Spropertize
, 3, MANY
, 0,
3029 "Return a copy of STRING with text properties added.\n\
3030 First argument is the string to copy.\n\
3031 Remaining arguments form a sequence of PROPERTY VALUE pairs for text\n\
3032 properties to add to the result ")
3037 Lisp_Object properties
, string
;
3038 struct gcpro gcpro1
, gcpro2
;
3041 /* Number of args must be odd. */
3042 if ((nargs
& 1) == 0 || nargs
< 3)
3043 error ("Wrong number of arguments");
3045 properties
= string
= Qnil
;
3046 GCPRO2 (properties
, string
);
3048 /* First argument must be a string. */
3049 CHECK_STRING (args
[0], 0);
3050 string
= Fcopy_sequence (args
[0]);
3052 for (i
= 1; i
< nargs
; i
+= 2)
3054 CHECK_SYMBOL (args
[i
], i
);
3055 properties
= Fcons (args
[i
], Fcons (args
[i
+ 1], properties
));
3058 Fadd_text_properties (make_number (0),
3059 make_number (XSTRING (string
)->size
),
3060 properties
, string
);
3061 RETURN_UNGCPRO (string
);
3065 /* Number of bytes that STRING will occupy when put into the result.
3066 MULTIBYTE is nonzero if the result should be multibyte. */
3068 #define CONVERTED_BYTE_SIZE(MULTIBYTE, STRING) \
3069 (((MULTIBYTE) && ! STRING_MULTIBYTE (STRING)) \
3070 ? count_size_as_multibyte (XSTRING (STRING)->data, \
3071 STRING_BYTES (XSTRING (STRING))) \
3072 : STRING_BYTES (XSTRING (STRING)))
3074 DEFUN ("format", Fformat
, Sformat
, 1, MANY
, 0,
3075 "Format a string out of a control-string and arguments.\n\
3076 The first argument is a control string.\n\
3077 The other arguments are substituted into it to make the result, a string.\n\
3078 It may contain %-sequences meaning to substitute the next argument.\n\
3079 %s means print a string argument. Actually, prints any object, with `princ'.\n\
3080 %d means print as number in decimal (%o octal, %x hex).\n\
3081 %X is like %x, but uses upper case.\n\
3082 %e means print a number in exponential notation.\n\
3083 %f means print a number in decimal-point notation.\n\
3084 %g means print a number in exponential notation\n\
3085 or decimal-point notation, whichever uses fewer characters.\n\
3086 %c means print a number as a single character.\n\
3087 %S means print any object as an s-expression (using `prin1').\n\
3088 The argument used for %d, %o, %x, %e, %f, %g or %c must be a number.\n\
3089 Use %% to put a single % into the output.")
3092 register Lisp_Object
*args
;
3094 register int n
; /* The number of the next arg to substitute */
3095 register int total
; /* An estimate of the final length */
3097 register unsigned char *format
, *end
;
3099 /* Nonzero if the output should be a multibyte string,
3100 which is true if any of the inputs is one. */
3102 /* When we make a multibyte string, we must pay attention to the
3103 byte combining problem, i.e., a byte may be combined with a
3104 multibyte charcter of the previous string. This flag tells if we
3105 must consider such a situation or not. */
3106 int maybe_combine_byte
;
3107 unsigned char *this_format
;
3115 /* It should not be necessary to GCPRO ARGS, because
3116 the caller in the interpreter should take care of that. */
3118 /* Try to determine whether the result should be multibyte.
3119 This is not always right; sometimes the result needs to be multibyte
3120 because of an object that we will pass through prin1,
3121 and in that case, we won't know it here. */
3122 for (n
= 0; n
< nargs
; n
++)
3123 if (STRINGP (args
[n
]) && STRING_MULTIBYTE (args
[n
]))
3126 CHECK_STRING (args
[0], 0);
3128 /* If we start out planning a unibyte result,
3129 and later find it has to be multibyte, we jump back to retry. */
3132 format
= XSTRING (args
[0])->data
;
3133 end
= format
+ STRING_BYTES (XSTRING (args
[0]));
3136 /* Make room in result for all the non-%-codes in the control string. */
3137 total
= 5 + CONVERTED_BYTE_SIZE (multibyte
, args
[0]);
3139 /* Add to TOTAL enough space to hold the converted arguments. */
3142 while (format
!= end
)
3143 if (*format
++ == '%')
3146 unsigned char *this_format_start
= format
- 1;
3147 int field_width
, precision
;
3149 /* General format specifications look like
3151 '%' [flags] [field-width] [precision] format
3156 field-width ::= [0-9]+
3157 precision ::= '.' [0-9]*
3159 If a field-width is specified, it specifies to which width
3160 the output should be padded with blanks, iff the output
3161 string is shorter than field-width.
3163 if precision is specified, it specifies the number of
3164 digits to print after the '.' for floats, or the max.
3165 number of chars to print from a string. */
3167 precision
= field_width
= 0;
3169 while (index ("-*# 0", *format
))
3172 if (*format
>= '0' && *format
<= '9')
3174 for (field_width
= 0; *format
>= '0' && *format
<= '9'; ++format
)
3175 field_width
= 10 * field_width
+ *format
- '0';
3181 for (precision
= 0; *format
>= '0' && *format
<= '9'; ++format
)
3182 precision
= 10 * precision
+ *format
- '0';
3185 if (format
- this_format_start
+ 1 > longest_format
)
3186 longest_format
= format
- this_format_start
+ 1;
3189 error ("Format string ends in middle of format specifier");
3192 else if (++n
>= nargs
)
3193 error ("Not enough arguments for format string");
3194 else if (*format
== 'S')
3196 /* For `S', prin1 the argument and then treat like a string. */
3197 register Lisp_Object tem
;
3198 tem
= Fprin1_to_string (args
[n
], Qnil
);
3199 if (STRING_MULTIBYTE (tem
) && ! multibyte
)
3207 else if (SYMBOLP (args
[n
]))
3209 /* Use a temp var to avoid problems when ENABLE_CHECKING
3211 struct Lisp_String
*t
= XSYMBOL (args
[n
])->name
;
3212 XSETSTRING (args
[n
], t
);
3213 if (STRING_MULTIBYTE (args
[n
]) && ! multibyte
)
3220 else if (STRINGP (args
[n
]))
3223 if (*format
!= 's' && *format
!= 'S')
3224 error ("Format specifier doesn't match argument type");
3225 thissize
= CONVERTED_BYTE_SIZE (multibyte
, args
[n
]);
3227 /* Would get MPV otherwise, since Lisp_Int's `point' to low memory. */
3228 else if (INTEGERP (args
[n
]) && *format
!= 's')
3230 /* The following loop assumes the Lisp type indicates
3231 the proper way to pass the argument.
3232 So make sure we have a flonum if the argument should
3234 if (*format
== 'e' || *format
== 'f' || *format
== 'g')
3235 args
[n
] = Ffloat (args
[n
]);
3237 if (*format
!= 'd' && *format
!= 'o' && *format
!= 'x'
3238 && *format
!= 'i' && *format
!= 'X' && *format
!= 'c')
3239 error ("Invalid format operation %%%c", *format
);
3243 && (! SINGLE_BYTE_CHAR_P (XINT (args
[n
]))
3244 || XINT (args
[n
]) == 0))
3251 args
[n
] = Fchar_to_string (args
[n
]);
3252 thissize
= STRING_BYTES (XSTRING (args
[n
]));
3255 else if (FLOATP (args
[n
]) && *format
!= 's')
3257 if (! (*format
== 'e' || *format
== 'f' || *format
== 'g'))
3258 args
[n
] = Ftruncate (args
[n
], Qnil
);
3260 /* Note that we're using sprintf to print floats,
3261 so we have to take into account what that function
3263 thissize
= 200 + precision
;
3267 /* Anything but a string, convert to a string using princ. */
3268 register Lisp_Object tem
;
3269 tem
= Fprin1_to_string (args
[n
], Qt
);
3270 if (STRING_MULTIBYTE (tem
) & ! multibyte
)
3279 thissize
= max (field_width
, thissize
);
3280 total
+= thissize
+ 4;
3283 /* Now we can no longer jump to retry.
3284 TOTAL and LONGEST_FORMAT are known for certain. */
3286 this_format
= (unsigned char *) alloca (longest_format
+ 1);
3288 /* Allocate the space for the result.
3289 Note that TOTAL is an overestimate. */
3291 buf
= (char *) alloca (total
+ 1);
3293 buf
= (char *) xmalloc (total
+ 1);
3299 /* Scan the format and store result in BUF. */
3300 format
= XSTRING (args
[0])->data
;
3301 maybe_combine_byte
= 0;
3302 while (format
!= end
)
3308 unsigned char *this_format_start
= format
;
3312 /* Process a numeric arg and skip it. */
3313 minlen
= atoi (format
);
3315 minlen
= - minlen
, negative
= 1;
3317 while ((*format
>= '0' && *format
<= '9')
3318 || *format
== '-' || *format
== ' ' || *format
== '.')
3321 if (*format
++ == '%')
3330 if (STRINGP (args
[n
]))
3332 int padding
, nbytes
, start
, end
;
3333 int width
= lisp_string_width (args
[n
], -1, NULL
, NULL
);
3335 /* If spec requires it, pad on right with spaces. */
3336 padding
= minlen
- width
;
3338 while (padding
-- > 0)
3348 && !ASCII_BYTE_P (*((unsigned char *) p
- 1))
3349 && STRING_MULTIBYTE (args
[n
])
3350 && !CHAR_HEAD_P (XSTRING (args
[n
])->data
[0]))
3351 maybe_combine_byte
= 1;
3352 nbytes
= copy_text (XSTRING (args
[n
])->data
, p
,
3353 STRING_BYTES (XSTRING (args
[n
])),
3354 STRING_MULTIBYTE (args
[n
]), multibyte
);
3356 nchars
+= XSTRING (args
[n
])->size
;
3360 while (padding
-- > 0)
3366 /* If this argument has text properties, record where
3367 in the result string it appears. */
3368 if (XSTRING (args
[n
])->intervals
)
3372 int nbytes
= nargs
* sizeof *info
;
3373 info
= (struct info
*) alloca (nbytes
);
3374 bzero (info
, nbytes
);
3377 info
[n
].start
= start
;
3381 else if (INTEGERP (args
[n
]) || FLOATP (args
[n
]))
3385 bcopy (this_format_start
, this_format
,
3386 format
- this_format_start
);
3387 this_format
[format
- this_format_start
] = 0;
3389 if (INTEGERP (args
[n
]))
3390 sprintf (p
, this_format
, XINT (args
[n
]));
3392 sprintf (p
, this_format
, XFLOAT_DATA (args
[n
]));
3396 && !ASCII_BYTE_P (*((unsigned char *) p
- 1))
3397 && !CHAR_HEAD_P (*((unsigned char *) p
)))
3398 maybe_combine_byte
= 1;
3399 this_nchars
= strlen (p
);
3401 p
+= str_to_multibyte (p
, buf
+ total
- p
, this_nchars
);
3404 nchars
+= this_nchars
;
3407 else if (STRING_MULTIBYTE (args
[0]))
3409 /* Copy a whole multibyte character. */
3412 && !ASCII_BYTE_P (*((unsigned char *) p
- 1))
3413 && !CHAR_HEAD_P (*format
))
3414 maybe_combine_byte
= 1;
3416 while (! CHAR_HEAD_P (*format
)) *p
++ = *format
++;
3421 /* Convert a single-byte character to multibyte. */
3422 int len
= copy_text (format
, p
, 1, 0, 1);
3429 *p
++ = *format
++, nchars
++;
3432 if (p
> buf
+ total
+ 1)
3435 if (maybe_combine_byte
)
3436 nchars
= multibyte_chars_in_text (buf
, p
- buf
);
3437 val
= make_specified_string (buf
, nchars
, p
- buf
, multibyte
);
3439 /* If we allocated BUF with malloc, free it too. */
3443 /* If the format string has text properties, or any of the string
3444 arguments has text properties, set up text properties of the
3447 if (XSTRING (args
[0])->intervals
|| info
)
3449 Lisp_Object len
, new_len
, props
;
3450 struct gcpro gcpro1
;
3452 /* Add text properties from the format string. */
3453 len
= make_number (XSTRING (args
[0])->size
);
3454 props
= text_property_list (args
[0], make_number (0), len
, Qnil
);
3459 new_len
= make_number (XSTRING (val
)->size
);
3460 extend_property_ranges (props
, len
, new_len
);
3461 add_text_properties_from_list (val
, props
, make_number (0));
3464 /* Add text properties from arguments. */
3466 for (n
= 1; n
< nargs
; ++n
)
3469 len
= make_number (XSTRING (args
[n
])->size
);
3470 new_len
= make_number (info
[n
].end
- info
[n
].start
);
3471 props
= text_property_list (args
[n
], make_number (0), len
, Qnil
);
3472 extend_property_ranges (props
, len
, new_len
);
3473 /* If successive arguments have properites, be sure that
3474 the value of `composition' property be the copy. */
3475 if (n
> 1 && info
[n
- 1].end
)
3476 make_composition_value_copy (props
);
3477 add_text_properties_from_list (val
, props
,
3478 make_number (info
[n
].start
));
3491 format1 (string1
, arg0
, arg1
, arg2
, arg3
, arg4
)
3492 EMACS_INT arg0
, arg1
, arg2
, arg3
, arg4
;
3506 doprnt (buf
, sizeof buf
, string1
, (char *)0, 5, (char **) args
);
3508 doprnt (buf
, sizeof buf
, string1
, (char *)0, 5, &string1
+ 1);
3510 return build_string (buf
);
3513 DEFUN ("char-equal", Fchar_equal
, Schar_equal
, 2, 2, 0,
3514 "Return t if two characters match, optionally ignoring case.\n\
3515 Both arguments must be characters (i.e. integers).\n\
3516 Case is ignored if `case-fold-search' is non-nil in the current buffer.")
3518 register Lisp_Object c1
, c2
;
3521 CHECK_NUMBER (c1
, 0);
3522 CHECK_NUMBER (c2
, 1);
3524 if (XINT (c1
) == XINT (c2
))
3526 if (NILP (current_buffer
->case_fold_search
))
3529 /* Do these in separate statements,
3530 then compare the variables.
3531 because of the way DOWNCASE uses temp variables. */
3532 i1
= DOWNCASE (XFASTINT (c1
));
3533 i2
= DOWNCASE (XFASTINT (c2
));
3534 return (i1
== i2
? Qt
: Qnil
);
3537 /* Transpose the markers in two regions of the current buffer, and
3538 adjust the ones between them if necessary (i.e.: if the regions
3541 START1, END1 are the character positions of the first region.
3542 START1_BYTE, END1_BYTE are the byte positions.
3543 START2, END2 are the character positions of the second region.
3544 START2_BYTE, END2_BYTE are the byte positions.
3546 Traverses the entire marker list of the buffer to do so, adding an
3547 appropriate amount to some, subtracting from some, and leaving the
3548 rest untouched. Most of this is copied from adjust_markers in insdel.c.
3550 It's the caller's job to ensure that START1 <= END1 <= START2 <= END2. */
3553 transpose_markers (start1
, end1
, start2
, end2
,
3554 start1_byte
, end1_byte
, start2_byte
, end2_byte
)
3555 register int start1
, end1
, start2
, end2
;
3556 register int start1_byte
, end1_byte
, start2_byte
, end2_byte
;
3558 register int amt1
, amt1_byte
, amt2
, amt2_byte
, diff
, diff_byte
, mpos
;
3559 register Lisp_Object marker
;
3561 /* Update point as if it were a marker. */
3565 TEMP_SET_PT_BOTH (PT
+ (end2
- end1
),
3566 PT_BYTE
+ (end2_byte
- end1_byte
));
3567 else if (PT
< start2
)
3568 TEMP_SET_PT_BOTH (PT
+ (end2
- start2
) - (end1
- start1
),
3569 (PT_BYTE
+ (end2_byte
- start2_byte
)
3570 - (end1_byte
- start1_byte
)));
3572 TEMP_SET_PT_BOTH (PT
- (start2
- start1
),
3573 PT_BYTE
- (start2_byte
- start1_byte
));
3575 /* We used to adjust the endpoints here to account for the gap, but that
3576 isn't good enough. Even if we assume the caller has tried to move the
3577 gap out of our way, it might still be at start1 exactly, for example;
3578 and that places it `inside' the interval, for our purposes. The amount
3579 of adjustment is nontrivial if there's a `denormalized' marker whose
3580 position is between GPT and GPT + GAP_SIZE, so it's simpler to leave
3581 the dirty work to Fmarker_position, below. */
3583 /* The difference between the region's lengths */
3584 diff
= (end2
- start2
) - (end1
- start1
);
3585 diff_byte
= (end2_byte
- start2_byte
) - (end1_byte
- start1_byte
);
3587 /* For shifting each marker in a region by the length of the other
3588 region plus the distance between the regions. */
3589 amt1
= (end2
- start2
) + (start2
- end1
);
3590 amt2
= (end1
- start1
) + (start2
- end1
);
3591 amt1_byte
= (end2_byte
- start2_byte
) + (start2_byte
- end1_byte
);
3592 amt2_byte
= (end1_byte
- start1_byte
) + (start2_byte
- end1_byte
);
3594 for (marker
= BUF_MARKERS (current_buffer
); !NILP (marker
);
3595 marker
= XMARKER (marker
)->chain
)
3597 mpos
= marker_byte_position (marker
);
3598 if (mpos
>= start1_byte
&& mpos
< end2_byte
)
3600 if (mpos
< end1_byte
)
3602 else if (mpos
< start2_byte
)
3606 XMARKER (marker
)->bytepos
= mpos
;
3608 mpos
= XMARKER (marker
)->charpos
;
3609 if (mpos
>= start1
&& mpos
< end2
)
3613 else if (mpos
< start2
)
3618 XMARKER (marker
)->charpos
= mpos
;
3622 DEFUN ("transpose-regions", Ftranspose_regions
, Stranspose_regions
, 4, 5, 0,
3623 "Transpose region START1 to END1 with START2 to END2.\n\
3624 The regions may not be overlapping, because the size of the buffer is\n\
3625 never changed in a transposition.\n\
3627 Optional fifth arg LEAVE_MARKERS, if non-nil, means don't update\n\
3628 any markers that happen to be located in the regions.\n\
3630 Transposing beyond buffer boundaries is an error.")
3631 (startr1
, endr1
, startr2
, endr2
, leave_markers
)
3632 Lisp_Object startr1
, endr1
, startr2
, endr2
, leave_markers
;
3634 register int start1
, end1
, start2
, end2
;
3635 int start1_byte
, start2_byte
, len1_byte
, len2_byte
;
3636 int gap
, len1
, len_mid
, len2
;
3637 unsigned char *start1_addr
, *start2_addr
, *temp
;
3639 INTERVAL cur_intv
, tmp_interval1
, tmp_interval_mid
, tmp_interval2
;
3640 cur_intv
= BUF_INTERVALS (current_buffer
);
3642 validate_region (&startr1
, &endr1
);
3643 validate_region (&startr2
, &endr2
);
3645 start1
= XFASTINT (startr1
);
3646 end1
= XFASTINT (endr1
);
3647 start2
= XFASTINT (startr2
);
3648 end2
= XFASTINT (endr2
);
3651 /* Swap the regions if they're reversed. */
3654 register int glumph
= start1
;
3662 len1
= end1
- start1
;
3663 len2
= end2
- start2
;
3666 error ("Transposed regions overlap");
3667 else if (start1
== end1
|| start2
== end2
)
3668 error ("Transposed region has length 0");
3670 /* The possibilities are:
3671 1. Adjacent (contiguous) regions, or separate but equal regions
3672 (no, really equal, in this case!), or
3673 2. Separate regions of unequal size.
3675 The worst case is usually No. 2. It means that (aside from
3676 potential need for getting the gap out of the way), there also
3677 needs to be a shifting of the text between the two regions. So
3678 if they are spread far apart, we are that much slower... sigh. */
3680 /* It must be pointed out that the really studly thing to do would
3681 be not to move the gap at all, but to leave it in place and work
3682 around it if necessary. This would be extremely efficient,
3683 especially considering that people are likely to do
3684 transpositions near where they are working interactively, which
3685 is exactly where the gap would be found. However, such code
3686 would be much harder to write and to read. So, if you are
3687 reading this comment and are feeling squirrely, by all means have
3688 a go! I just didn't feel like doing it, so I will simply move
3689 the gap the minimum distance to get it out of the way, and then
3690 deal with an unbroken array. */
3692 /* Make sure the gap won't interfere, by moving it out of the text
3693 we will operate on. */
3694 if (start1
< gap
&& gap
< end2
)
3696 if (gap
- start1
< end2
- gap
)
3702 start1_byte
= CHAR_TO_BYTE (start1
);
3703 start2_byte
= CHAR_TO_BYTE (start2
);
3704 len1_byte
= CHAR_TO_BYTE (end1
) - start1_byte
;
3705 len2_byte
= CHAR_TO_BYTE (end2
) - start2_byte
;
3707 #ifdef BYTE_COMBINING_DEBUG
3710 if (count_combining_before (BYTE_POS_ADDR (start2_byte
),
3711 len2_byte
, start1
, start1_byte
)
3712 || count_combining_before (BYTE_POS_ADDR (start1_byte
),
3713 len1_byte
, end2
, start2_byte
+ len2_byte
)
3714 || count_combining_after (BYTE_POS_ADDR (start1_byte
),
3715 len1_byte
, end2
, start2_byte
+ len2_byte
))
3720 if (count_combining_before (BYTE_POS_ADDR (start2_byte
),
3721 len2_byte
, start1
, start1_byte
)
3722 || count_combining_before (BYTE_POS_ADDR (start1_byte
),
3723 len1_byte
, start2
, start2_byte
)
3724 || count_combining_after (BYTE_POS_ADDR (start2_byte
),
3725 len2_byte
, end1
, start1_byte
+ len1_byte
)
3726 || count_combining_after (BYTE_POS_ADDR (start1_byte
),
3727 len1_byte
, end2
, start2_byte
+ len2_byte
))
3732 /* Hmmm... how about checking to see if the gap is large
3733 enough to use as the temporary storage? That would avoid an
3734 allocation... interesting. Later, don't fool with it now. */
3736 /* Working without memmove, for portability (sigh), so must be
3737 careful of overlapping subsections of the array... */
3739 if (end1
== start2
) /* adjacent regions */
3741 modify_region (current_buffer
, start1
, end2
);
3742 record_change (start1
, len1
+ len2
);
3744 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
3745 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
3746 Fset_text_properties (make_number (start1
), make_number (end2
),
3749 /* First region smaller than second. */
3750 if (len1_byte
< len2_byte
)
3752 /* We use alloca only if it is small,
3753 because we want to avoid stack overflow. */
3754 if (len2_byte
> 20000)
3755 temp
= (unsigned char *) xmalloc (len2_byte
);
3757 temp
= (unsigned char *) alloca (len2_byte
);
3759 /* Don't precompute these addresses. We have to compute them
3760 at the last minute, because the relocating allocator might
3761 have moved the buffer around during the xmalloc. */
3762 start1_addr
= BYTE_POS_ADDR (start1_byte
);
3763 start2_addr
= BYTE_POS_ADDR (start2_byte
);
3765 bcopy (start2_addr
, temp
, len2_byte
);
3766 bcopy (start1_addr
, start1_addr
+ len2_byte
, len1_byte
);
3767 bcopy (temp
, start1_addr
, len2_byte
);
3768 if (len2_byte
> 20000)
3772 /* First region not smaller than second. */
3774 if (len1_byte
> 20000)
3775 temp
= (unsigned char *) xmalloc (len1_byte
);
3777 temp
= (unsigned char *) alloca (len1_byte
);
3778 start1_addr
= BYTE_POS_ADDR (start1_byte
);
3779 start2_addr
= BYTE_POS_ADDR (start2_byte
);
3780 bcopy (start1_addr
, temp
, len1_byte
);
3781 bcopy (start2_addr
, start1_addr
, len2_byte
);
3782 bcopy (temp
, start1_addr
+ len2_byte
, len1_byte
);
3783 if (len1_byte
> 20000)
3786 graft_intervals_into_buffer (tmp_interval1
, start1
+ len2
,
3787 len1
, current_buffer
, 0);
3788 graft_intervals_into_buffer (tmp_interval2
, start1
,
3789 len2
, current_buffer
, 0);
3790 update_compositions (start1
, start1
+ len2
, CHECK_BORDER
);
3791 update_compositions (start1
+ len2
, end2
, CHECK_TAIL
);
3793 /* Non-adjacent regions, because end1 != start2, bleagh... */
3796 len_mid
= start2_byte
- (start1_byte
+ len1_byte
);
3798 if (len1_byte
== len2_byte
)
3799 /* Regions are same size, though, how nice. */
3801 modify_region (current_buffer
, start1
, end1
);
3802 modify_region (current_buffer
, start2
, end2
);
3803 record_change (start1
, len1
);
3804 record_change (start2
, len2
);
3805 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
3806 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
3807 Fset_text_properties (make_number (start1
), make_number (end1
),
3809 Fset_text_properties (make_number (start2
), make_number (end2
),
3812 if (len1_byte
> 20000)
3813 temp
= (unsigned char *) xmalloc (len1_byte
);
3815 temp
= (unsigned char *) alloca (len1_byte
);
3816 start1_addr
= BYTE_POS_ADDR (start1_byte
);
3817 start2_addr
= BYTE_POS_ADDR (start2_byte
);
3818 bcopy (start1_addr
, temp
, len1_byte
);
3819 bcopy (start2_addr
, start1_addr
, len2_byte
);
3820 bcopy (temp
, start2_addr
, len1_byte
);
3821 if (len1_byte
> 20000)
3823 graft_intervals_into_buffer (tmp_interval1
, start2
,
3824 len1
, current_buffer
, 0);
3825 graft_intervals_into_buffer (tmp_interval2
, start1
,
3826 len2
, current_buffer
, 0);
3829 else if (len1_byte
< len2_byte
) /* Second region larger than first */
3830 /* Non-adjacent & unequal size, area between must also be shifted. */
3832 modify_region (current_buffer
, start1
, end2
);
3833 record_change (start1
, (end2
- start1
));
3834 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
3835 tmp_interval_mid
= copy_intervals (cur_intv
, end1
, len_mid
);
3836 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
3837 Fset_text_properties (make_number (start1
), make_number (end2
),
3840 /* holds region 2 */
3841 if (len2_byte
> 20000)
3842 temp
= (unsigned char *) xmalloc (len2_byte
);
3844 temp
= (unsigned char *) alloca (len2_byte
);
3845 start1_addr
= BYTE_POS_ADDR (start1_byte
);
3846 start2_addr
= BYTE_POS_ADDR (start2_byte
);
3847 bcopy (start2_addr
, temp
, len2_byte
);
3848 bcopy (start1_addr
, start1_addr
+ len_mid
+ len2_byte
, len1_byte
);
3849 safe_bcopy (start1_addr
+ len1_byte
, start1_addr
+ len2_byte
, len_mid
);
3850 bcopy (temp
, start1_addr
, len2_byte
);
3851 if (len2_byte
> 20000)
3853 graft_intervals_into_buffer (tmp_interval1
, end2
- len1
,
3854 len1
, current_buffer
, 0);
3855 graft_intervals_into_buffer (tmp_interval_mid
, start1
+ len2
,
3856 len_mid
, current_buffer
, 0);
3857 graft_intervals_into_buffer (tmp_interval2
, start1
,
3858 len2
, current_buffer
, 0);
3861 /* Second region smaller than first. */
3863 record_change (start1
, (end2
- start1
));
3864 modify_region (current_buffer
, start1
, end2
);
3866 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
3867 tmp_interval_mid
= copy_intervals (cur_intv
, end1
, len_mid
);
3868 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
3869 Fset_text_properties (make_number (start1
), make_number (end2
),
3872 /* holds region 1 */
3873 if (len1_byte
> 20000)
3874 temp
= (unsigned char *) xmalloc (len1_byte
);
3876 temp
= (unsigned char *) alloca (len1_byte
);
3877 start1_addr
= BYTE_POS_ADDR (start1_byte
);
3878 start2_addr
= BYTE_POS_ADDR (start2_byte
);
3879 bcopy (start1_addr
, temp
, len1_byte
);
3880 bcopy (start2_addr
, start1_addr
, len2_byte
);
3881 bcopy (start1_addr
+ len1_byte
, start1_addr
+ len2_byte
, len_mid
);
3882 bcopy (temp
, start1_addr
+ len2_byte
+ len_mid
, len1_byte
);
3883 if (len1_byte
> 20000)
3885 graft_intervals_into_buffer (tmp_interval1
, end2
- len1
,
3886 len1
, current_buffer
, 0);
3887 graft_intervals_into_buffer (tmp_interval_mid
, start1
+ len2
,
3888 len_mid
, current_buffer
, 0);
3889 graft_intervals_into_buffer (tmp_interval2
, start1
,
3890 len2
, current_buffer
, 0);
3893 update_compositions (start1
, start1
+ len2
, CHECK_BORDER
);
3894 update_compositions (end2
- len1
, end2
, CHECK_BORDER
);
3897 /* When doing multiple transpositions, it might be nice
3898 to optimize this. Perhaps the markers in any one buffer
3899 should be organized in some sorted data tree. */
3900 if (NILP (leave_markers
))
3902 transpose_markers (start1
, end1
, start2
, end2
,
3903 start1_byte
, start1_byte
+ len1_byte
,
3904 start2_byte
, start2_byte
+ len2_byte
);
3905 fix_overlays_in_range (start1
, end2
);
3917 Qbuffer_access_fontify_functions
3918 = intern ("buffer-access-fontify-functions");
3919 staticpro (&Qbuffer_access_fontify_functions
);
3921 DEFVAR_LISP ("inhibit-field-text-motion", &Vinhibit_field_text_motion
,
3922 "Non-nil means.text motion commands don't notice fields.");
3923 Vinhibit_field_text_motion
= Qnil
;
3925 DEFVAR_LISP ("buffer-access-fontify-functions",
3926 &Vbuffer_access_fontify_functions
,
3927 "List of functions called by `buffer-substring' to fontify if necessary.\n\
3928 Each function is called with two arguments which specify the range\n\
3929 of the buffer being accessed.");
3930 Vbuffer_access_fontify_functions
= Qnil
;
3934 extern Lisp_Object Vprin1_to_string_buffer
;
3935 obuf
= Fcurrent_buffer ();
3936 /* Do this here, because init_buffer_once is too early--it won't work. */
3937 Fset_buffer (Vprin1_to_string_buffer
);
3938 /* Make sure buffer-access-fontify-functions is nil in this buffer. */
3939 Fset (Fmake_local_variable (intern ("buffer-access-fontify-functions")),
3944 DEFVAR_LISP ("buffer-access-fontified-property",
3945 &Vbuffer_access_fontified_property
,
3946 "Property which (if non-nil) indicates text has been fontified.\n\
3947 `buffer-substring' need not call the `buffer-access-fontify-functions'\n\
3948 functions if all the text being accessed has this property.");
3949 Vbuffer_access_fontified_property
= Qnil
;
3951 DEFVAR_LISP ("system-name", &Vsystem_name
,
3952 "The name of the machine Emacs is running on.");
3954 DEFVAR_LISP ("user-full-name", &Vuser_full_name
,
3955 "The full name of the user logged in.");
3957 DEFVAR_LISP ("user-login-name", &Vuser_login_name
,
3958 "The user's name, taken from environment variables if possible.");
3960 DEFVAR_LISP ("user-real-login-name", &Vuser_real_login_name
,
3961 "The user's name, based upon the real uid only.");
3963 defsubr (&Spropertize
);
3964 defsubr (&Schar_equal
);
3965 defsubr (&Sgoto_char
);
3966 defsubr (&Sstring_to_char
);
3967 defsubr (&Schar_to_string
);
3968 defsubr (&Sbuffer_substring
);
3969 defsubr (&Sbuffer_substring_no_properties
);
3970 defsubr (&Sbuffer_string
);
3972 defsubr (&Spoint_marker
);
3973 defsubr (&Smark_marker
);
3975 defsubr (&Sregion_beginning
);
3976 defsubr (&Sregion_end
);
3978 staticpro (&Qfield
);
3979 Qfield
= intern ("field");
3980 staticpro (&Qboundary
);
3981 Qboundary
= intern ("boundary");
3982 defsubr (&Sfield_beginning
);
3983 defsubr (&Sfield_end
);
3984 defsubr (&Sfield_string
);
3985 defsubr (&Sfield_string_no_properties
);
3986 defsubr (&Sdelete_field
);
3987 defsubr (&Sconstrain_to_field
);
3989 defsubr (&Sline_beginning_position
);
3990 defsubr (&Sline_end_position
);
3992 /* defsubr (&Smark); */
3993 /* defsubr (&Sset_mark); */
3994 defsubr (&Ssave_excursion
);
3995 defsubr (&Ssave_current_buffer
);
3997 defsubr (&Sbufsize
);
3998 defsubr (&Spoint_max
);
3999 defsubr (&Spoint_min
);
4000 defsubr (&Spoint_min_marker
);
4001 defsubr (&Spoint_max_marker
);
4002 defsubr (&Sgap_position
);
4003 defsubr (&Sgap_size
);
4004 defsubr (&Sposition_bytes
);
4005 defsubr (&Sbyte_to_position
);
4011 defsubr (&Sfollowing_char
);
4012 defsubr (&Sprevious_char
);
4013 defsubr (&Schar_after
);
4014 defsubr (&Schar_before
);
4016 defsubr (&Sinsert_before_markers
);
4017 defsubr (&Sinsert_and_inherit
);
4018 defsubr (&Sinsert_and_inherit_before_markers
);
4019 defsubr (&Sinsert_char
);
4021 defsubr (&Suser_login_name
);
4022 defsubr (&Suser_real_login_name
);
4023 defsubr (&Suser_uid
);
4024 defsubr (&Suser_real_uid
);
4025 defsubr (&Suser_full_name
);
4026 defsubr (&Semacs_pid
);
4027 defsubr (&Scurrent_time
);
4028 defsubr (&Sformat_time_string
);
4029 defsubr (&Sfloat_time
);
4030 defsubr (&Sdecode_time
);
4031 defsubr (&Sencode_time
);
4032 defsubr (&Scurrent_time_string
);
4033 defsubr (&Scurrent_time_zone
);
4034 defsubr (&Sset_time_zone_rule
);
4035 defsubr (&Ssystem_name
);
4036 defsubr (&Smessage
);
4037 defsubr (&Smessage_box
);
4038 defsubr (&Smessage_or_box
);
4039 defsubr (&Scurrent_message
);
4042 defsubr (&Sinsert_buffer_substring
);
4043 defsubr (&Scompare_buffer_substrings
);
4044 defsubr (&Ssubst_char_in_region
);
4045 defsubr (&Stranslate_region
);
4046 defsubr (&Sdelete_region
);
4047 defsubr (&Sdelete_and_extract_region
);
4049 defsubr (&Snarrow_to_region
);
4050 defsubr (&Ssave_restriction
);
4051 defsubr (&Stranspose_regions
);