1 /* Lisp functions pertaining to editing.
2 Copyright (C) 1985,86,87,89,93,94,95,96,97,98, 1999, 2000, 2001
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. */
25 #include <sys/types.h>
38 #include "intervals.h"
49 #define MAX_10_EXP DBL_MAX_10_EXP
51 #define MAX_10_EXP 310
59 extern char **environ
;
62 extern Lisp_Object make_time
P_ ((time_t));
63 extern size_t emacs_strftimeu
P_ ((char *, size_t, const char *,
64 const struct tm
*, int));
65 static int tm_diff
P_ ((struct tm
*, struct tm
*));
66 static void find_field
P_ ((Lisp_Object
, Lisp_Object
, int *, int *));
67 static void update_buffer_properties
P_ ((int, int));
68 static Lisp_Object region_limit
P_ ((int));
69 static int lisp_time_argument
P_ ((Lisp_Object
, time_t *, int *));
70 static size_t emacs_memftimeu
P_ ((char *, size_t, const char *,
71 size_t, const struct tm
*, int));
72 static void general_insert_function
P_ ((void (*) (unsigned char *, int),
73 void (*) (Lisp_Object
, int, int, int,
75 int, int, Lisp_Object
*));
76 static Lisp_Object subst_char_in_region_unwind
P_ ((Lisp_Object
));
77 static Lisp_Object subst_char_in_region_unwind_1
P_ ((Lisp_Object
));
78 static void transpose_markers
P_ ((int, int, int, int, int, int, int, int));
81 extern char *index
P_ ((const char *, int));
84 Lisp_Object Vbuffer_access_fontify_functions
;
85 Lisp_Object Qbuffer_access_fontify_functions
;
86 Lisp_Object Vbuffer_access_fontified_property
;
88 Lisp_Object Fuser_full_name
P_ ((Lisp_Object
));
90 /* Non-nil means don't stop at field boundary in text motion commands. */
92 Lisp_Object Vinhibit_field_text_motion
;
94 /* Some static data, and a function to initialize it for each run */
96 Lisp_Object Vsystem_name
;
97 Lisp_Object Vuser_real_login_name
; /* login name of current user ID */
98 Lisp_Object Vuser_full_name
; /* full name of current user */
99 Lisp_Object Vuser_login_name
; /* user name from LOGNAME or USER */
101 /* Symbol for the text property used to mark fields. */
105 /* A special value for Qfield properties. */
107 Lisp_Object Qboundary
;
114 register unsigned char *p
;
115 struct passwd
*pw
; /* password entry for the current user */
118 /* Set up system_name even when dumping. */
122 /* Don't bother with this on initial start when just dumping out */
125 #endif /* not CANNOT_DUMP */
127 pw
= (struct passwd
*) getpwuid (getuid ());
129 /* We let the real user name default to "root" because that's quite
130 accurate on MSDOG and because it lets Emacs find the init file.
131 (The DVX libraries override the Djgpp libraries here.) */
132 Vuser_real_login_name
= build_string (pw
? pw
->pw_name
: "root");
134 Vuser_real_login_name
= build_string (pw
? pw
->pw_name
: "unknown");
137 /* Get the effective user name, by consulting environment variables,
138 or the effective uid if those are unset. */
139 user_name
= (char *) getenv ("LOGNAME");
142 user_name
= (char *) getenv ("USERNAME"); /* it's USERNAME on NT */
143 #else /* WINDOWSNT */
144 user_name
= (char *) getenv ("USER");
145 #endif /* WINDOWSNT */
148 pw
= (struct passwd
*) getpwuid (geteuid ());
149 user_name
= (char *) (pw
? pw
->pw_name
: "unknown");
151 Vuser_login_name
= build_string (user_name
);
153 /* If the user name claimed in the environment vars differs from
154 the real uid, use the claimed name to find the full name. */
155 tem
= Fstring_equal (Vuser_login_name
, Vuser_real_login_name
);
156 Vuser_full_name
= Fuser_full_name (NILP (tem
)? make_number (geteuid())
159 p
= (unsigned char *) getenv ("NAME");
161 Vuser_full_name
= build_string (p
);
162 else if (NILP (Vuser_full_name
))
163 Vuser_full_name
= build_string ("unknown");
166 DEFUN ("char-to-string", Fchar_to_string
, Schar_to_string
, 1, 1, 0,
167 "Convert arg CHAR to a string containing that character.")
169 Lisp_Object character
;
172 unsigned char str
[MAX_MULTIBYTE_LENGTH
];
174 CHECK_NUMBER (character
, 0);
176 len
= (SINGLE_BYTE_CHAR_P (XFASTINT (character
))
177 ? (*str
= (unsigned char)(XFASTINT (character
)), 1)
178 : char_to_string (XFASTINT (character
), str
));
179 return make_string_from_bytes (str
, 1, len
);
182 DEFUN ("string-to-char", Fstring_to_char
, Sstring_to_char
, 1, 1, 0,
183 "Convert arg STRING to a character, the first character of that string.\n\
184 A multibyte character is handled correctly.")
186 register Lisp_Object string
;
188 register Lisp_Object val
;
189 register struct Lisp_String
*p
;
190 CHECK_STRING (string
, 0);
191 p
= XSTRING (string
);
194 if (STRING_MULTIBYTE (string
))
195 XSETFASTINT (val
, STRING_CHAR (p
->data
, STRING_BYTES (p
)));
197 XSETFASTINT (val
, p
->data
[0]);
200 XSETFASTINT (val
, 0);
205 buildmark (charpos
, bytepos
)
206 int charpos
, bytepos
;
208 register Lisp_Object mark
;
209 mark
= Fmake_marker ();
210 set_marker_both (mark
, Qnil
, charpos
, bytepos
);
214 DEFUN ("point", Fpoint
, Spoint
, 0, 0, 0,
215 "Return value of point, as an integer.\n\
216 Beginning of buffer is position (point-min)")
220 XSETFASTINT (temp
, PT
);
224 DEFUN ("point-marker", Fpoint_marker
, Spoint_marker
, 0, 0, 0,
225 "Return value of point, as a marker object.")
228 return buildmark (PT
, PT_BYTE
);
232 clip_to_bounds (lower
, num
, upper
)
233 int lower
, num
, upper
;
237 else if (num
> upper
)
243 DEFUN ("goto-char", Fgoto_char
, Sgoto_char
, 1, 1, "NGoto char: ",
244 "Set point to POSITION, a number or marker.\n\
245 Beginning of buffer is position (point-min), end is (point-max).\n\
246 If the position is in the middle of a multibyte form,\n\
247 the actual point is set at the head of the multibyte form\n\
248 except in the case that `enable-multibyte-characters' is nil.")
250 register Lisp_Object position
;
254 if (MARKERP (position
)
255 && current_buffer
== XMARKER (position
)->buffer
)
257 pos
= marker_position (position
);
259 SET_PT_BOTH (BEGV
, BEGV_BYTE
);
261 SET_PT_BOTH (ZV
, ZV_BYTE
);
263 SET_PT_BOTH (pos
, marker_byte_position (position
));
268 CHECK_NUMBER_COERCE_MARKER (position
, 0);
270 pos
= clip_to_bounds (BEGV
, XINT (position
), ZV
);
276 /* Return the start or end position of the region.
277 BEGINNINGP non-zero means return the start.
278 If there is no region active, signal an error. */
281 region_limit (beginningp
)
284 extern Lisp_Object Vmark_even_if_inactive
; /* Defined in callint.c. */
287 if (!NILP (Vtransient_mark_mode
)
288 && NILP (Vmark_even_if_inactive
)
289 && NILP (current_buffer
->mark_active
))
290 Fsignal (Qmark_inactive
, Qnil
);
292 m
= Fmarker_position (current_buffer
->mark
);
294 error ("There is no region now");
296 if ((PT
< XFASTINT (m
)) == beginningp
)
297 m
= make_number (PT
);
301 DEFUN ("region-beginning", Fregion_beginning
, Sregion_beginning
, 0, 0, 0,
302 "Return position of beginning of region, as an integer.")
305 return region_limit (1);
308 DEFUN ("region-end", Fregion_end
, Sregion_end
, 0, 0, 0,
309 "Return position of end of region, as an integer.")
312 return region_limit (0);
315 DEFUN ("mark-marker", Fmark_marker
, Smark_marker
, 0, 0, 0,
316 "Return this buffer's mark, as a marker object.\n\
317 Watch out! Moving this marker changes the mark position.\n\
318 If you set the marker not to point anywhere, the buffer will have no mark.")
321 return current_buffer
->mark
;
325 #if 0 /* Not used. */
327 /* Return nonzero if POS1 and POS2 have the same value
328 for the text property PROP. */
331 char_property_eq (prop
, pos1
, pos2
)
333 Lisp_Object pos1
, pos2
;
335 Lisp_Object pval1
, pval2
;
337 pval1
= Fget_char_property (pos1
, prop
, Qnil
);
338 pval2
= Fget_char_property (pos2
, prop
, Qnil
);
340 return EQ (pval1
, pval2
);
345 /* Return the direction from which the text-property PROP would be
346 inherited by any new text inserted at POS: 1 if it would be
347 inherited from the char after POS, -1 if it would be inherited from
348 the char before POS, and 0 if from neither. */
351 text_property_stickiness (prop
, pos
)
355 Lisp_Object front_sticky
;
357 if (XINT (pos
) > BEGV
)
358 /* Consider previous character. */
360 Lisp_Object prev_pos
, rear_non_sticky
;
362 prev_pos
= make_number (XINT (pos
) - 1);
363 rear_non_sticky
= Fget_text_property (prev_pos
, Qrear_nonsticky
, Qnil
);
365 if (EQ (rear_non_sticky
, Qnil
)
366 || (CONSP (rear_non_sticky
)
367 && NILP (Fmemq (prop
, rear_non_sticky
))))
368 /* PROP is not rear-non-sticky, and since this takes precedence over
369 any front-stickiness, PROP is inherited from before. */
373 /* Consider following character. */
374 front_sticky
= Fget_text_property (pos
, Qfront_sticky
, Qnil
);
376 if (EQ (front_sticky
, Qt
)
377 || (CONSP (front_sticky
)
378 && !NILP (Fmemq (prop
, front_sticky
))))
379 /* PROP is inherited from after. */
382 /* PROP is not inherited from either side. */
387 /* Find the field surrounding POS in *BEG and *END. If POS is nil,
388 the value of point is used instead. If BEG or END null,
389 means don't store the beginning or end of the field.
391 If MERGE_AT_BOUNDARY is nonzero, then if POS is at the very first
392 position of a field, then the beginning of the previous field is
393 returned instead of the beginning of POS's field (since the end of a
394 field is actually also the beginning of the next input field, this
395 behavior is sometimes useful). Additionally in the MERGE_AT_BOUNDARY
396 true case, if two fields are separated by a field with the special
397 value `boundary', and POS lies within it, then the two separated
398 fields are considered to be adjacent, and POS between them, when
399 finding the beginning and ending of the "merged" field.
401 Either BEG or END may be 0, in which case the corresponding value
405 find_field (pos
, merge_at_boundary
, beg
, end
)
407 Lisp_Object merge_at_boundary
;
410 /* Fields right before and after the point. */
411 Lisp_Object before_field
, after_field
;
412 /* If the fields came from overlays, the associated overlays.
413 Qnil means they came from text-properties. */
414 Lisp_Object before_overlay
= Qnil
, after_overlay
= Qnil
;
415 /* 1 if POS counts as the start of a field. */
416 int at_field_start
= 0;
417 /* 1 if POS counts as the end of a field. */
418 int at_field_end
= 0;
421 XSETFASTINT (pos
, PT
);
423 CHECK_NUMBER_COERCE_MARKER (pos
, 0);
426 = get_char_property_and_overlay (pos
, Qfield
, Qnil
, &after_overlay
);
428 = (XFASTINT (pos
) > BEGV
429 ? get_char_property_and_overlay (make_number (XINT (pos
) - 1),
434 /* See if we need to handle the case where MERGE_AT_BOUNDARY is nil
435 and POS is at beginning of a field, which can also be interpreted
436 as the end of the previous field. Note that the case where if
437 MERGE_AT_BOUNDARY is non-nil (see function comment) is actually the
438 more natural one; then we avoid treating the beginning of a field
440 if (NILP (merge_at_boundary
) && !EQ (after_field
, before_field
))
441 /* We are at a boundary, see which direction is inclusive. We
442 decide by seeing which field the `field' property sticks to. */
444 /* -1 means insertions go into before_field, 1 means they go
445 into after_field, 0 means neither. */
447 /* Whether the before/after_field come from overlays. */
448 int bop
= !NILP (before_overlay
);
449 int aop
= !NILP (after_overlay
);
451 if (bop
&& XMARKER (OVERLAY_END (before_overlay
))->insertion_type
== 1)
452 /* before_field is from an overlay, which expands upon
453 end-insertions. Note that it's possible for after_overlay to
454 also eat insertions here, but then they will overlap, and
455 there's not much we can do. */
458 && XMARKER (OVERLAY_START (after_overlay
))->insertion_type
== 0)
459 /* after_field is from an overlay, which expand to contain
463 /* Both fields come from overlays, but neither will contain any
467 /* before_field is an overlay that won't eat any insertion, but
468 after_field is from a text-property. Assume that the
469 text-property continues underneath the overlay, and so will
470 be inherited by any insertion, regardless of any stickiness
474 /* Similarly, when after_field is the overlay. */
477 /* Both fields come from text-properties. Look for explicit
478 stickiness properties. */
479 stickiness
= text_property_stickiness (Qfield
, pos
);
483 else if (stickiness
< 0)
486 /* STICKINESS == 0 means that any inserted text will get a
487 `field' char-property of nil, so check to see if that
488 matches either of the adjacent characters (this being a
489 kind of "stickiness by default"). */
491 if (NILP (before_field
))
492 at_field_end
= 1; /* Sticks to the left. */
493 else if (NILP (after_field
))
494 at_field_start
= 1; /* Sticks to the right. */
498 /* Note about special `boundary' fields:
500 Consider the case where the point (`.') is between the fields `x' and `y':
504 In this situation, if merge_at_boundary is true, we consider the
505 `x' and `y' fields as forming one big merged field, and so the end
506 of the field is the end of `y'.
508 However, if `x' and `y' are separated by a special `boundary' field
509 (a field with a `field' char-property of 'boundary), then we ignore
510 this special field when merging adjacent fields. Here's the same
511 situation, but with a `boundary' field between the `x' and `y' fields:
515 Here, if point is at the end of `x', the beginning of `y', or
516 anywhere in-between (within the `boundary' field), we merge all
517 three fields and consider the beginning as being the beginning of
518 the `x' field, and the end as being the end of the `y' field. */
523 /* POS is at the edge of a field, and we should consider it as
524 the beginning of the following field. */
525 *beg
= XFASTINT (pos
);
527 /* Find the previous field boundary. */
529 if (!NILP (merge_at_boundary
) && EQ (before_field
, Qboundary
))
530 /* Skip a `boundary' field. */
531 pos
= Fprevious_single_char_property_change (pos
, Qfield
, Qnil
,Qnil
);
533 pos
= Fprevious_single_char_property_change (pos
, Qfield
, Qnil
, Qnil
);
534 *beg
= NILP (pos
) ? BEGV
: XFASTINT (pos
);
541 /* POS is at the edge of a field, and we should consider it as
542 the end of the previous field. */
543 *end
= XFASTINT (pos
);
545 /* Find the next field boundary. */
547 if (!NILP (merge_at_boundary
) && EQ (after_field
, Qboundary
))
548 /* Skip a `boundary' field. */
549 pos
= Fnext_single_char_property_change (pos
, Qfield
, Qnil
, Qnil
);
551 pos
= Fnext_single_char_property_change (pos
, Qfield
, Qnil
, Qnil
);
552 *end
= NILP (pos
) ? ZV
: XFASTINT (pos
);
558 DEFUN ("delete-field", Fdelete_field
, Sdelete_field
, 0, 1, 0,
559 "Delete the field surrounding POS.\n\
560 A field is a region of text with the same `field' property.\n\
561 If POS is nil, the value of point is used for POS.")
566 find_field (pos
, Qnil
, &beg
, &end
);
568 del_range (beg
, end
);
572 DEFUN ("field-string", Ffield_string
, Sfield_string
, 0, 1, 0,
573 "Return the contents of the field surrounding POS as a string.\n\
574 A field is a region of text with the same `field' property.\n\
575 If POS is nil, the value of point is used for POS.")
580 find_field (pos
, Qnil
, &beg
, &end
);
581 return make_buffer_string (beg
, end
, 1);
584 DEFUN ("field-string-no-properties", Ffield_string_no_properties
, Sfield_string_no_properties
, 0, 1, 0,
585 "Return the contents of the field around POS, without text-properties.\n\
586 A field is a region of text with the same `field' property.\n\
587 If POS is nil, the value of point is used for POS.")
592 find_field (pos
, Qnil
, &beg
, &end
);
593 return make_buffer_string (beg
, end
, 0);
596 DEFUN ("field-beginning", Ffield_beginning
, Sfield_beginning
, 0, 2, 0,
597 "Return the beginning of the field surrounding POS.\n\
598 A field is a region of text with the same `field' property.\n\
599 If POS is nil, the value of point is used for POS.\n\
600 If ESCAPE-FROM-EDGE is non-nil and POS is at the beginning of its\n\
601 field, then the beginning of the *previous* field is returned.")
602 (pos
, escape_from_edge
)
603 Lisp_Object pos
, escape_from_edge
;
606 find_field (pos
, escape_from_edge
, &beg
, 0);
607 return make_number (beg
);
610 DEFUN ("field-end", Ffield_end
, Sfield_end
, 0, 2, 0,
611 "Return the end of the field surrounding POS.\n\
612 A field is a region of text with the same `field' property.\n\
613 If POS is nil, the value of point is used for POS.\n\
614 If ESCAPE-FROM-EDGE is non-nil and POS is at the end of its field,\n\
615 then the end of the *following* field is returned.")
616 (pos
, escape_from_edge
)
617 Lisp_Object pos
, escape_from_edge
;
620 find_field (pos
, escape_from_edge
, 0, &end
);
621 return make_number (end
);
624 DEFUN ("constrain-to-field", Fconstrain_to_field
, Sconstrain_to_field
, 2, 5, 0,
625 "Return the position closest to NEW-POS that is in the same field as OLD-POS.\n\
627 A field is a region of text with the same `field' property.\n\
628 If NEW-POS is nil, then the current point is used instead, and set to the\n\
629 constrained position if that is different.\n\
631 If OLD-POS is at the boundary of two fields, then the allowable\n\
632 positions for NEW-POS depends on the value of the optional argument\n\
633 ESCAPE-FROM-EDGE: If ESCAPE-FROM-EDGE is nil, then NEW-POS is\n\
634 constrained to the field that has the same `field' char-property\n\
635 as any new characters inserted at OLD-POS, whereas if ESCAPE-FROM-EDGE\n\
636 is non-nil, NEW-POS is constrained to the union of the two adjacent\n\
637 fields. Additionally, if two fields are separated by another field with\n\
638 the special value `boundary', then any point within this special field is\n\
639 also considered to be `on the boundary'.\n\
641 If the optional argument ONLY-IN-LINE is non-nil and constraining\n\
642 NEW-POS would move it to a different line, NEW-POS is returned\n\
643 unconstrained. This useful for commands that move by line, like\n\
644 \\[next-line] or \\[beginning-of-line], which should generally respect field boundaries\n\
645 only in the case where they can still move to the right line.\n\
647 If the optional argument INHIBIT-CAPTURE-PROPERTY is non-nil, and OLD-POS has\n\
648 a non-nil property of that name, then any field boundaries are ignored.\n\
650 Field boundaries are not noticed if `inhibit-field-text-motion' is non-nil.")
651 (new_pos
, old_pos
, escape_from_edge
, only_in_line
, inhibit_capture_property
)
652 Lisp_Object new_pos
, old_pos
;
653 Lisp_Object escape_from_edge
, only_in_line
, inhibit_capture_property
;
655 /* If non-zero, then the original point, before re-positioning. */
659 /* Use the current point, and afterwards, set it. */
662 XSETFASTINT (new_pos
, PT
);
665 if (NILP (Vinhibit_field_text_motion
)
666 && !EQ (new_pos
, old_pos
)
667 && (!NILP (Fget_char_property (new_pos
, Qfield
, Qnil
))
668 || !NILP (Fget_char_property (old_pos
, Qfield
, Qnil
)))
669 && (NILP (inhibit_capture_property
)
670 || NILP (Fget_char_property(old_pos
, inhibit_capture_property
, Qnil
))))
671 /* NEW_POS is not within the same field as OLD_POS; try to
672 move NEW_POS so that it is. */
675 Lisp_Object field_bound
;
677 CHECK_NUMBER_COERCE_MARKER (new_pos
, 0);
678 CHECK_NUMBER_COERCE_MARKER (old_pos
, 0);
680 fwd
= (XFASTINT (new_pos
) > XFASTINT (old_pos
));
683 field_bound
= Ffield_end (old_pos
, escape_from_edge
);
685 field_bound
= Ffield_beginning (old_pos
, escape_from_edge
);
687 if (/* See if ESCAPE_FROM_EDGE caused FIELD_BOUND to jump to the
688 other side of NEW_POS, which would mean that NEW_POS is
689 already acceptable, and it's not necessary to constrain it
691 ((XFASTINT (field_bound
) < XFASTINT (new_pos
)) ? fwd
: !fwd
)
692 /* NEW_POS should be constrained, but only if either
693 ONLY_IN_LINE is nil (in which case any constraint is OK),
694 or NEW_POS and FIELD_BOUND are on the same line (in which
695 case the constraint is OK even if ONLY_IN_LINE is non-nil). */
696 && (NILP (only_in_line
)
697 /* This is the ONLY_IN_LINE case, check that NEW_POS and
698 FIELD_BOUND are on the same line by seeing whether
699 there's an intervening newline or not. */
700 || (scan_buffer ('\n',
701 XFASTINT (new_pos
), XFASTINT (field_bound
),
702 fwd
? -1 : 1, &shortage
, 1),
704 /* Constrain NEW_POS to FIELD_BOUND. */
705 new_pos
= field_bound
;
707 if (orig_point
&& XFASTINT (new_pos
) != orig_point
)
708 /* The NEW_POS argument was originally nil, so automatically set PT. */
709 SET_PT (XFASTINT (new_pos
));
716 DEFUN ("line-beginning-position", Fline_beginning_position
, Sline_beginning_position
,
718 "Return the character position of the first character on the current line.\n\
719 With argument N not nil or 1, move forward N - 1 lines first.\n\
720 If scan reaches end of buffer, return that position.\n\
721 The scan does not cross a field boundary unless it would move\n\
722 beyond there to a different line. Field boundaries are not noticed if\n\
723 `inhibit-field-text-motion' is non-nil. .And if N is nil or 1,\n\
724 and scan starts at a field boundary, the scan stops as soon as it starts.\n\
726 This function does not move point.")
730 int orig
, orig_byte
, end
;
739 Fforward_line (make_number (XINT (n
) - 1));
742 SET_PT_BOTH (orig
, orig_byte
);
744 /* Return END constrained to the current input field. */
745 return Fconstrain_to_field (make_number (end
), make_number (orig
),
746 XINT (n
) != 1 ? Qt
: Qnil
,
750 DEFUN ("line-end-position", Fline_end_position
, Sline_end_position
,
752 "Return the character position of the last character on the current line.\n\
753 With argument N not nil or 1, move forward N - 1 lines first.\n\
754 If scan reaches end of buffer, return that position.\n\
755 This function does not move point.")
767 end_pos
= find_before_next_newline (orig
, 0, XINT (n
) - (XINT (n
) <= 0));
769 /* Return END_POS constrained to the current input field. */
770 return Fconstrain_to_field (make_number (end_pos
), make_number (orig
),
775 save_excursion_save ()
777 int visible
= (XBUFFER (XWINDOW (selected_window
)->buffer
)
780 return Fcons (Fpoint_marker (),
781 Fcons (Fcopy_marker (current_buffer
->mark
, Qnil
),
782 Fcons (visible
? Qt
: Qnil
,
783 Fcons (current_buffer
->mark_active
,
788 save_excursion_restore (info
)
791 Lisp_Object tem
, tem1
, omark
, nmark
;
792 struct gcpro gcpro1
, gcpro2
, gcpro3
;
795 tem
= Fmarker_buffer (XCAR (info
));
796 /* If buffer being returned to is now deleted, avoid error */
797 /* Otherwise could get error here while unwinding to top level
799 /* In that case, Fmarker_buffer returns nil now. */
803 omark
= nmark
= Qnil
;
804 GCPRO3 (info
, omark
, nmark
);
811 unchain_marker (tem
);
816 omark
= Fmarker_position (current_buffer
->mark
);
817 Fset_marker (current_buffer
->mark
, tem
, Fcurrent_buffer ());
818 nmark
= Fmarker_position (tem
);
819 unchain_marker (tem
);
823 visible_p
= !NILP (XCAR (info
));
825 #if 0 /* We used to make the current buffer visible in the selected window
826 if that was true previously. That avoids some anomalies.
827 But it creates others, and it wasn't documented, and it is simpler
828 and cleaner never to alter the window/buffer connections. */
831 && current_buffer
!= XBUFFER (XWINDOW (selected_window
)->buffer
))
832 Fswitch_to_buffer (Fcurrent_buffer (), Qnil
);
838 tem1
= current_buffer
->mark_active
;
839 current_buffer
->mark_active
= tem
;
841 if (!NILP (Vrun_hooks
))
843 /* If mark is active now, and either was not active
844 or was at a different place, run the activate hook. */
845 if (! NILP (current_buffer
->mark_active
))
847 if (! EQ (omark
, nmark
))
848 call1 (Vrun_hooks
, intern ("activate-mark-hook"));
850 /* If mark has ceased to be active, run deactivate hook. */
851 else if (! NILP (tem1
))
852 call1 (Vrun_hooks
, intern ("deactivate-mark-hook"));
855 /* If buffer was visible in a window, and a different window was
856 selected, and the old selected window is still showing this
857 buffer, restore point in that window. */
860 && !EQ (tem
, selected_window
)
861 && (tem1
= XWINDOW (tem
)->buffer
,
862 (/* Window is live... */
864 /* ...and it shows the current buffer. */
865 && XBUFFER (tem1
) == current_buffer
)))
866 Fset_window_point (tem
, make_number (PT
));
872 DEFUN ("save-excursion", Fsave_excursion
, Ssave_excursion
, 0, UNEVALLED
, 0,
873 "Save point, mark, and current buffer; execute BODY; restore those things.\n\
874 Executes BODY just like `progn'.\n\
875 The values of point, mark and the current buffer are restored\n\
876 even in case of abnormal exit (throw or error).\n\
877 The state of activation of the mark is also restored.\n\
879 This construct does not save `deactivate-mark', and therefore\n\
880 functions that change the buffer will still cause deactivation\n\
881 of the mark at the end of the command. To prevent that, bind\n\
882 `deactivate-mark' with `let'.")
886 register Lisp_Object val
;
887 int count
= specpdl_ptr
- specpdl
;
889 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
892 return unbind_to (count
, val
);
895 DEFUN ("save-current-buffer", Fsave_current_buffer
, Ssave_current_buffer
, 0, UNEVALLED
, 0,
896 "Save the current buffer; execute BODY; restore the current buffer.\n\
897 Executes BODY just like `progn'.")
902 int count
= specpdl_ptr
- specpdl
;
904 record_unwind_protect (set_buffer_if_live
, Fcurrent_buffer ());
907 return unbind_to (count
, val
);
910 DEFUN ("buffer-size", Fbufsize
, Sbufsize
, 0, 1, 0,
911 "Return the number of characters in the current buffer.\n\
912 If BUFFER, return the number of characters in that buffer instead.")
917 return make_number (Z
- BEG
);
920 CHECK_BUFFER (buffer
, 1);
921 return make_number (BUF_Z (XBUFFER (buffer
))
922 - BUF_BEG (XBUFFER (buffer
)));
926 DEFUN ("point-min", Fpoint_min
, Spoint_min
, 0, 0, 0,
927 "Return the minimum permissible value of point in the current buffer.\n\
928 This is 1, unless narrowing (a buffer restriction) is in effect.")
932 XSETFASTINT (temp
, BEGV
);
936 DEFUN ("point-min-marker", Fpoint_min_marker
, Spoint_min_marker
, 0, 0, 0,
937 "Return a marker to the minimum permissible value of point in this buffer.\n\
938 This is the beginning, unless narrowing (a buffer restriction) is in effect.")
941 return buildmark (BEGV
, BEGV_BYTE
);
944 DEFUN ("point-max", Fpoint_max
, Spoint_max
, 0, 0, 0,
945 "Return the maximum permissible value of point in the current buffer.\n\
946 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)\n\
947 is in effect, in which case it is less.")
951 XSETFASTINT (temp
, ZV
);
955 DEFUN ("point-max-marker", Fpoint_max_marker
, Spoint_max_marker
, 0, 0, 0,
956 "Return a marker to the maximum permissible value of point in this buffer.\n\
957 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)\n\
958 is in effect, in which case it is less.")
961 return buildmark (ZV
, ZV_BYTE
);
964 DEFUN ("gap-position", Fgap_position
, Sgap_position
, 0, 0, 0,
965 "Return the position of the gap, in the current buffer.\n\
966 See also `gap-size'.")
970 XSETFASTINT (temp
, GPT
);
974 DEFUN ("gap-size", Fgap_size
, Sgap_size
, 0, 0, 0,
975 "Return the size of the current buffer's gap.\n\
976 See also `gap-position'.")
980 XSETFASTINT (temp
, GAP_SIZE
);
984 DEFUN ("position-bytes", Fposition_bytes
, Sposition_bytes
, 1, 1, 0,
985 "Return the byte position for character position POSITION.\n\
986 If POSITION is out of range, the value is nil.")
988 Lisp_Object position
;
990 CHECK_NUMBER_COERCE_MARKER (position
, 1);
991 if (XINT (position
) < BEG
|| XINT (position
) > Z
)
993 return make_number (CHAR_TO_BYTE (XINT (position
)));
996 DEFUN ("byte-to-position", Fbyte_to_position
, Sbyte_to_position
, 1, 1, 0,
997 "Return the character position for byte position BYTEPOS.\n\
998 If BYTEPOS is out of range, the value is nil.")
1000 Lisp_Object bytepos
;
1002 CHECK_NUMBER (bytepos
, 1);
1003 if (XINT (bytepos
) < BEG_BYTE
|| XINT (bytepos
) > Z_BYTE
)
1005 return make_number (BYTE_TO_CHAR (XINT (bytepos
)));
1008 DEFUN ("following-char", Ffollowing_char
, Sfollowing_char
, 0, 0, 0,
1009 "Return the character following point, as a number.\n\
1010 At the end of the buffer or accessible region, return 0.")
1015 XSETFASTINT (temp
, 0);
1017 XSETFASTINT (temp
, FETCH_CHAR (PT_BYTE
));
1021 DEFUN ("preceding-char", Fprevious_char
, Sprevious_char
, 0, 0, 0,
1022 "Return the character preceding point, as a number.\n\
1023 At the beginning of the buffer or accessible region, return 0.")
1028 XSETFASTINT (temp
, 0);
1029 else if (!NILP (current_buffer
->enable_multibyte_characters
))
1033 XSETFASTINT (temp
, FETCH_CHAR (pos
));
1036 XSETFASTINT (temp
, FETCH_BYTE (PT_BYTE
- 1));
1040 DEFUN ("bobp", Fbobp
, Sbobp
, 0, 0, 0,
1041 "Return t if point is at the beginning of the buffer.\n\
1042 If the buffer is narrowed, this means the beginning of the narrowed part.")
1050 DEFUN ("eobp", Feobp
, Seobp
, 0, 0, 0,
1051 "Return t if point is at the end of the buffer.\n\
1052 If the buffer is narrowed, this means the end of the narrowed part.")
1060 DEFUN ("bolp", Fbolp
, Sbolp
, 0, 0, 0,
1061 "Return t if point is at the beginning of a line.")
1064 if (PT
== BEGV
|| FETCH_BYTE (PT_BYTE
- 1) == '\n')
1069 DEFUN ("eolp", Feolp
, Seolp
, 0, 0, 0,
1070 "Return t if point is at the end of a line.\n\
1071 `End of a line' includes point being at the end of the buffer.")
1074 if (PT
== ZV
|| FETCH_BYTE (PT_BYTE
) == '\n')
1079 DEFUN ("char-after", Fchar_after
, Schar_after
, 0, 1, 0,
1080 "Return character in current buffer at position POS.\n\
1081 POS is an integer or a marker.\n\
1082 If POS is out of range, the value is nil.")
1086 register int pos_byte
;
1091 XSETFASTINT (pos
, PT
);
1096 pos_byte
= marker_byte_position (pos
);
1097 if (pos_byte
< BEGV_BYTE
|| pos_byte
>= ZV_BYTE
)
1102 CHECK_NUMBER_COERCE_MARKER (pos
, 0);
1103 if (XINT (pos
) < BEGV
|| XINT (pos
) >= ZV
)
1106 pos_byte
= CHAR_TO_BYTE (XINT (pos
));
1109 return make_number (FETCH_CHAR (pos_byte
));
1112 DEFUN ("char-before", Fchar_before
, Schar_before
, 0, 1, 0,
1113 "Return character in current buffer preceding position POS.\n\
1114 POS is an integer or a marker.\n\
1115 If POS is out of range, the value is nil.")
1119 register Lisp_Object val
;
1120 register int pos_byte
;
1125 XSETFASTINT (pos
, PT
);
1130 pos_byte
= marker_byte_position (pos
);
1132 if (pos_byte
<= BEGV_BYTE
|| pos_byte
> ZV_BYTE
)
1137 CHECK_NUMBER_COERCE_MARKER (pos
, 0);
1139 if (XINT (pos
) <= BEGV
|| XINT (pos
) > ZV
)
1142 pos_byte
= CHAR_TO_BYTE (XINT (pos
));
1145 if (!NILP (current_buffer
->enable_multibyte_characters
))
1148 XSETFASTINT (val
, FETCH_CHAR (pos_byte
));
1153 XSETFASTINT (val
, FETCH_BYTE (pos_byte
));
1158 DEFUN ("user-login-name", Fuser_login_name
, Suser_login_name
, 0, 1, 0,
1159 "Return the name under which the user logged in, as a string.\n\
1160 This is based on the effective uid, not the real uid.\n\
1161 Also, if the environment variable LOGNAME or USER is set,\n\
1162 that determines the value of this function.\n\n\
1163 If optional argument UID is an integer, return the login name of the user\n\
1164 with that uid, or nil if there is no such user.")
1170 /* Set up the user name info if we didn't do it before.
1171 (That can happen if Emacs is dumpable
1172 but you decide to run `temacs -l loadup' and not dump. */
1173 if (INTEGERP (Vuser_login_name
))
1177 return Vuser_login_name
;
1179 CHECK_NUMBER (uid
, 0);
1180 pw
= (struct passwd
*) getpwuid (XINT (uid
));
1181 return (pw
? build_string (pw
->pw_name
) : Qnil
);
1184 DEFUN ("user-real-login-name", Fuser_real_login_name
, Suser_real_login_name
,
1186 "Return the name of the user's real uid, as a string.\n\
1187 This ignores the environment variables LOGNAME and USER, so it differs from\n\
1188 `user-login-name' when running under `su'.")
1191 /* Set up the user name info if we didn't do it before.
1192 (That can happen if Emacs is dumpable
1193 but you decide to run `temacs -l loadup' and not dump. */
1194 if (INTEGERP (Vuser_login_name
))
1196 return Vuser_real_login_name
;
1199 DEFUN ("user-uid", Fuser_uid
, Suser_uid
, 0, 0, 0,
1200 "Return the effective uid of Emacs.\n\
1201 Value is an integer or float, depending on the value.")
1204 return make_fixnum_or_float (geteuid ());
1207 DEFUN ("user-real-uid", Fuser_real_uid
, Suser_real_uid
, 0, 0, 0,
1208 "Return the real uid of Emacs.\n\
1209 Value is an integer or float, depending on the value.")
1212 return make_fixnum_or_float (getuid ());
1215 DEFUN ("user-full-name", Fuser_full_name
, Suser_full_name
, 0, 1, 0,
1216 "Return the full name of the user logged in, as a string.\n\
1217 If the full name corresponding to Emacs's userid is not known,\n\
1218 return \"unknown\".\n\
1220 If optional argument UID is an integer or float, return the full name\n\
1221 of the user with that uid, or nil if there is no such user.\n\
1222 If UID is a string, return the full name of the user with that login\n\
1223 name, or nil if there is no such user.")
1228 register unsigned char *p
, *q
;
1232 return Vuser_full_name
;
1233 else if (NUMBERP (uid
))
1234 pw
= (struct passwd
*) getpwuid ((uid_t
) XFLOATINT (uid
));
1235 else if (STRINGP (uid
))
1236 pw
= (struct passwd
*) getpwnam (XSTRING (uid
)->data
);
1238 error ("Invalid UID specification");
1243 p
= (unsigned char *) USER_FULL_NAME
;
1244 /* Chop off everything after the first comma. */
1245 q
= (unsigned char *) index (p
, ',');
1246 full
= make_string (p
, q
? q
- p
: strlen (p
));
1248 #ifdef AMPERSAND_FULL_NAME
1249 p
= XSTRING (full
)->data
;
1250 q
= (unsigned char *) index (p
, '&');
1251 /* Substitute the login name for the &, upcasing the first character. */
1254 register unsigned char *r
;
1257 login
= Fuser_login_name (make_number (pw
->pw_uid
));
1258 r
= (unsigned char *) alloca (strlen (p
) + XSTRING (login
)->size
+ 1);
1259 bcopy (p
, r
, q
- p
);
1261 strcat (r
, XSTRING (login
)->data
);
1262 r
[q
- p
] = UPCASE (r
[q
- p
]);
1264 full
= build_string (r
);
1266 #endif /* AMPERSAND_FULL_NAME */
1271 DEFUN ("system-name", Fsystem_name
, Ssystem_name
, 0, 0, 0,
1272 "Return the name of the machine you are running on, as a string.")
1275 return Vsystem_name
;
1278 /* For the benefit of callers who don't want to include lisp.h */
1283 if (STRINGP (Vsystem_name
))
1284 return (char *) XSTRING (Vsystem_name
)->data
;
1289 DEFUN ("emacs-pid", Femacs_pid
, Semacs_pid
, 0, 0, 0,
1290 "Return the process ID of Emacs, as an integer.")
1293 return make_number (getpid ());
1296 DEFUN ("current-time", Fcurrent_time
, Scurrent_time
, 0, 0, 0,
1297 "Return the current time, as the number of seconds since 1970-01-01 00:00:00.\n\
1298 The time is returned as a list of three integers. The first has the\n\
1299 most significant 16 bits of the seconds, while the second has the\n\
1300 least significant 16 bits. The third integer gives the microsecond\n\
1303 The microsecond count is zero on systems that do not provide\n\
1304 resolution finer than a second.")
1308 Lisp_Object result
[3];
1311 XSETINT (result
[0], (EMACS_SECS (t
) >> 16) & 0xffff);
1312 XSETINT (result
[1], (EMACS_SECS (t
) >> 0) & 0xffff);
1313 XSETINT (result
[2], EMACS_USECS (t
));
1315 return Flist (3, result
);
1320 lisp_time_argument (specified_time
, result
, usec
)
1321 Lisp_Object specified_time
;
1325 if (NILP (specified_time
))
1332 *usec
= EMACS_USECS (t
);
1333 *result
= EMACS_SECS (t
);
1337 return time (result
) != -1;
1341 Lisp_Object high
, low
;
1342 high
= Fcar (specified_time
);
1343 CHECK_NUMBER (high
, 0);
1344 low
= Fcdr (specified_time
);
1349 Lisp_Object usec_l
= Fcdr (low
);
1351 usec_l
= Fcar (usec_l
);
1356 CHECK_NUMBER (usec_l
, 0);
1357 *usec
= XINT (usec_l
);
1364 CHECK_NUMBER (low
, 0);
1365 *result
= (XINT (high
) << 16) + (XINT (low
) & 0xffff);
1366 return *result
>> 16 == XINT (high
);
1370 DEFUN ("float-time", Ffloat_time
, Sfloat_time
, 0, 1, 0,
1371 "Return the current time, as a float number of seconds since the epoch.\n\
1372 If an argument is given, it specifies a time to convert to float\n\
1373 instead of the current time. The argument should have the forms:\n\
1374 (HIGH . LOW) or (HIGH LOW USEC) or (HIGH LOW . USEC).\n\
1375 Thus, you can use times obtained from `current-time'\n\
1376 and from `file-attributes'.\n\
1378 WARNING: Since the result is floating point, it may not be exact.\n\
1379 Do not use this function if precise time stamps are required.")
1381 Lisp_Object specified_time
;
1386 if (! lisp_time_argument (specified_time
, &sec
, &usec
))
1387 error ("Invalid time specification");
1389 return make_float ((sec
* 1e6
+ usec
) / 1e6
);
1392 /* Write information into buffer S of size MAXSIZE, according to the
1393 FORMAT of length FORMAT_LEN, using time information taken from *TP.
1394 Default to Universal Time if UT is nonzero, local time otherwise.
1395 Return the number of bytes written, not including the terminating
1396 '\0'. If S is NULL, nothing will be written anywhere; so to
1397 determine how many bytes would be written, use NULL for S and
1398 ((size_t) -1) for MAXSIZE.
1400 This function behaves like emacs_strftimeu, except it allows null
1403 emacs_memftimeu (s
, maxsize
, format
, format_len
, tp
, ut
)
1408 const struct tm
*tp
;
1413 /* Loop through all the null-terminated strings in the format
1414 argument. Normally there's just one null-terminated string, but
1415 there can be arbitrarily many, concatenated together, if the
1416 format contains '\0' bytes. emacs_strftimeu stops at the first
1417 '\0' byte so we must invoke it separately for each such string. */
1426 result
= emacs_strftimeu (s
, maxsize
, format
, tp
, ut
);
1430 if (result
== 0 && s
[0] != '\0')
1435 maxsize
-= result
+ 1;
1437 len
= strlen (format
);
1438 if (len
== format_len
)
1442 format_len
-= len
+ 1;
1447 DEFUN ("format-time-string", Fformat_time_string, Sformat_time_string, 1, 3, 0,
1448 "Use FORMAT-STRING to format the time TIME, or now if omitted.\n\
1449 TIME is specified as (HIGH LOW . IGNORED) or (HIGH . LOW), as returned by\n\
1450 `current-time' or `file-attributes'.\n\
1451 The third, optional, argument UNIVERSAL, if non-nil, means describe TIME\n\
1452 as Universal Time; nil means describe TIME in the local time zone.\n\
1453 The value is a copy of FORMAT-STRING, but with certain constructs replaced\n\
1454 by text that describes the specified date and time in TIME:\n\
1456 %Y is the year, %y within the century, %C the century.\n\
1457 %G is the year corresponding to the ISO week, %g within the century.\n\
1458 %m is the numeric month.\n\
1459 %b and %h are the locale's abbreviated month name, %B the full name.\n\
1460 %d is the day of the month, zero-padded, %e is blank-padded.\n\
1461 %u is the numeric day of week from 1 (Monday) to 7, %w from 0 (Sunday) to 6.\n\
1462 %a is the locale's abbreviated name of the day of week, %A the full name.\n\
1463 %U is the week number starting on Sunday, %W starting on Monday,\n\
1464 %V according to ISO 8601.\n\
1465 %j is the day of the year.\n\
1467 %H is the hour on a 24-hour clock, %I is on a 12-hour clock, %k is like %H\n\
1468 only blank-padded, %l is like %I blank-padded.\n\
1469 %p is the locale's equivalent of either AM or PM.\n\
1470 %M is the minute.\n\
1471 %S is the second.\n\
1472 %Z is the time zone name, %z is the numeric form.\n\
1473 %s is the number of seconds since 1970-01-01 00:00:00 +0000.\n\
1475 %c is the locale's date and time format.\n\
1476 %x is the locale's \"preferred\" date format.\n\
1477 %D is like \"%m/%d/%y\".\n\
1479 %R is like \"%H:%M\", %T is like \"%H:%M:%S\", %r is like \"%I:%M:%S %p\".\n\
1480 %X is the locale's \"preferred\" time format.\n\
1482 Finally, %n is a newline, %t is a tab, %% is a literal %.\n\
1484 Certain flags and modifiers are available with some format controls.\n\
1485 The flags are `_', `-', `^' and `#'. For certain characters X,\n\
1486 %_X is like %X, but padded with blanks; %-X is like %X,\n\
1487 ut without padding. %^X is like %X but with all textual\n\
1488 characters up-cased; %#X is like %X but with letter-case of\n\
1489 all textual characters reversed.\n\
1490 %NX (where N stands for an integer) is like %X,\n\
1491 but takes up at least N (a number) positions.\n\
1492 The modifiers are `E' and `O'. For certain characters X,\n\
1493 %EX is a locale's alternative version of %X;\n\
1494 %OX is like %X, but uses the locale's number symbols.\n\
1496 For example, to produce full ISO 8601 format, use \"%Y-%m-%dT%T%z\".")
1497 (format_string, time, universal)
1500 DEFUN ("format-time-string", Fformat_time_string
, Sformat_time_string
, 1, 3, 0,
1501 0 /* See immediately above */)
1502 (format_string
, time
, universal
)
1503 Lisp_Object format_string
, time
, universal
;
1508 int ut
= ! NILP (universal
);
1510 CHECK_STRING (format_string
, 1);
1512 if (! lisp_time_argument (time
, &value
, NULL
))
1513 error ("Invalid time specification");
1515 format_string
= code_convert_string_norecord (format_string
,
1516 Vlocale_coding_system
, 1);
1518 /* This is probably enough. */
1519 size
= STRING_BYTES (XSTRING (format_string
)) * 6 + 50;
1521 tm
= ut
? gmtime (&value
) : localtime (&value
);
1523 error ("Specified time is not representable");
1525 synchronize_system_time_locale ();
1529 char *buf
= (char *) alloca (size
+ 1);
1533 result
= emacs_memftimeu (buf
, size
, XSTRING (format_string
)->data
,
1534 STRING_BYTES (XSTRING (format_string
)),
1536 if ((result
> 0 && result
< size
) || (result
== 0 && buf
[0] == '\0'))
1537 return code_convert_string_norecord (make_string (buf
, result
),
1538 Vlocale_coding_system
, 0);
1540 /* If buffer was too small, make it bigger and try again. */
1541 result
= emacs_memftimeu (NULL
, (size_t) -1,
1542 XSTRING (format_string
)->data
,
1543 STRING_BYTES (XSTRING (format_string
)),
1549 DEFUN ("decode-time", Fdecode_time
, Sdecode_time
, 0, 1, 0,
1550 "Decode a time value as (SEC MINUTE HOUR DAY MONTH YEAR DOW DST ZONE).\n\
1551 The optional SPECIFIED-TIME should be a list of (HIGH LOW . IGNORED)\n\
1552 or (HIGH . LOW), as from `current-time' and `file-attributes', or `nil'\n\
1553 to use the current time. The list has the following nine members:\n\
1554 SEC is an integer between 0 and 60; SEC is 60 for a leap second, which\n\
1555 only some operating systems support. MINUTE is an integer between 0 and 59.\n\
1556 HOUR is an integer between 0 and 23. DAY is an integer between 1 and 31.\n\
1557 MONTH is an integer between 1 and 12. YEAR is an integer indicating the\n\
1558 four-digit year. DOW is the day of week, an integer between 0 and 6, where\n\
1559 0 is Sunday. DST is t if daylight savings time is effect, otherwise nil.\n\
1560 ZONE is an integer indicating the number of seconds east of Greenwich.\n\
1561 \(Note that Common Lisp has different meanings for DOW and ZONE.)")
1563 Lisp_Object specified_time
;
1567 struct tm
*decoded_time
;
1568 Lisp_Object list_args
[9];
1570 if (! lisp_time_argument (specified_time
, &time_spec
, NULL
))
1571 error ("Invalid time specification");
1573 decoded_time
= localtime (&time_spec
);
1575 error ("Specified time is not representable");
1576 XSETFASTINT (list_args
[0], decoded_time
->tm_sec
);
1577 XSETFASTINT (list_args
[1], decoded_time
->tm_min
);
1578 XSETFASTINT (list_args
[2], decoded_time
->tm_hour
);
1579 XSETFASTINT (list_args
[3], decoded_time
->tm_mday
);
1580 XSETFASTINT (list_args
[4], decoded_time
->tm_mon
+ 1);
1581 XSETINT (list_args
[5], decoded_time
->tm_year
+ 1900);
1582 XSETFASTINT (list_args
[6], decoded_time
->tm_wday
);
1583 list_args
[7] = (decoded_time
->tm_isdst
)? Qt
: Qnil
;
1585 /* Make a copy, in case gmtime modifies the struct. */
1586 save_tm
= *decoded_time
;
1587 decoded_time
= gmtime (&time_spec
);
1588 if (decoded_time
== 0)
1589 list_args
[8] = Qnil
;
1591 XSETINT (list_args
[8], tm_diff (&save_tm
, decoded_time
));
1592 return Flist (9, list_args
);
1595 DEFUN ("encode-time", Fencode_time
, Sencode_time
, 6, MANY
, 0,
1596 "Convert SECOND, MINUTE, HOUR, DAY, MONTH, YEAR and ZONE to internal time.\n\
1597 This is the reverse operation of `decode-time', which see.\n\
1598 ZONE defaults to the current time zone rule. This can\n\
1599 be a string or t (as from `set-time-zone-rule'), or it can be a list\n\
1600 \(as from `current-time-zone') or an integer (as from `decode-time')\n\
1601 applied without consideration for daylight savings time.\n\
1603 You can pass more than 7 arguments; then the first six arguments\n\
1604 are used as SECOND through YEAR, and the *last* argument is used as ZONE.\n\
1605 The intervening arguments are ignored.\n\
1606 This feature lets (apply 'encode-time (decode-time ...)) work.\n\
1608 Out-of-range values for SEC, MINUTE, HOUR, DAY, or MONTH are allowed;\n\
1609 for example, a DAY of 0 means the day preceding the given month.\n\
1610 Year numbers less than 100 are treated just like other year numbers.\n\
1611 If you want them to stand for years in this century, you must do that yourself.")
1614 register Lisp_Object
*args
;
1618 Lisp_Object zone
= (nargs
> 6 ? args
[nargs
- 1] : Qnil
);
1620 CHECK_NUMBER (args
[0], 0); /* second */
1621 CHECK_NUMBER (args
[1], 1); /* minute */
1622 CHECK_NUMBER (args
[2], 2); /* hour */
1623 CHECK_NUMBER (args
[3], 3); /* day */
1624 CHECK_NUMBER (args
[4], 4); /* month */
1625 CHECK_NUMBER (args
[5], 5); /* year */
1627 tm
.tm_sec
= XINT (args
[0]);
1628 tm
.tm_min
= XINT (args
[1]);
1629 tm
.tm_hour
= XINT (args
[2]);
1630 tm
.tm_mday
= XINT (args
[3]);
1631 tm
.tm_mon
= XINT (args
[4]) - 1;
1632 tm
.tm_year
= XINT (args
[5]) - 1900;
1638 time
= mktime (&tm
);
1643 char **oldenv
= environ
, **newenv
;
1647 else if (STRINGP (zone
))
1648 tzstring
= (char *) XSTRING (zone
)->data
;
1649 else if (INTEGERP (zone
))
1651 int abszone
= abs (XINT (zone
));
1652 sprintf (tzbuf
, "XXX%s%d:%02d:%02d", "-" + (XINT (zone
) < 0),
1653 abszone
/ (60*60), (abszone
/60) % 60, abszone
% 60);
1657 error ("Invalid time zone specification");
1659 /* Set TZ before calling mktime; merely adjusting mktime's returned
1660 value doesn't suffice, since that would mishandle leap seconds. */
1661 set_time_zone_rule (tzstring
);
1663 time
= mktime (&tm
);
1665 /* Restore TZ to previous value. */
1669 #ifdef LOCALTIME_CACHE
1674 if (time
== (time_t) -1)
1675 error ("Specified time is not representable");
1677 return make_time (time
);
1680 DEFUN ("current-time-string", Fcurrent_time_string
, Scurrent_time_string
, 0, 1, 0,
1681 "Return the current time, as a human-readable string.\n\
1682 Programs can use this function to decode a time,\n\
1683 since the number of columns in each field is fixed.\n\
1684 The format is `Sun Sep 16 01:03:52 1973'.\n\
1685 However, see also the functions `decode-time' and `format-time-string'\n\
1686 which provide a much more powerful and general facility.\n\
1688 If an argument is given, it specifies a time to format\n\
1689 instead of the current time. The argument should have the form:\n\
1692 (HIGH LOW . IGNORED).\n\
1693 Thus, you can use times obtained from `current-time'\n\
1694 and from `file-attributes'.")
1696 Lisp_Object specified_time
;
1702 if (! lisp_time_argument (specified_time
, &value
, NULL
))
1704 tem
= (char *) ctime (&value
);
1706 strncpy (buf
, tem
, 24);
1709 return build_string (buf
);
1712 #define TM_YEAR_BASE 1900
1714 /* Yield A - B, measured in seconds.
1715 This function is copied from the GNU C Library. */
1720 /* Compute intervening leap days correctly even if year is negative.
1721 Take care to avoid int overflow in leap day calculations,
1722 but it's OK to assume that A and B are close to each other. */
1723 int a4
= (a
->tm_year
>> 2) + (TM_YEAR_BASE
>> 2) - ! (a
->tm_year
& 3);
1724 int b4
= (b
->tm_year
>> 2) + (TM_YEAR_BASE
>> 2) - ! (b
->tm_year
& 3);
1725 int a100
= a4
/ 25 - (a4
% 25 < 0);
1726 int b100
= b4
/ 25 - (b4
% 25 < 0);
1727 int a400
= a100
>> 2;
1728 int b400
= b100
>> 2;
1729 int intervening_leap_days
= (a4
- b4
) - (a100
- b100
) + (a400
- b400
);
1730 int years
= a
->tm_year
- b
->tm_year
;
1731 int days
= (365 * years
+ intervening_leap_days
1732 + (a
->tm_yday
- b
->tm_yday
));
1733 return (60 * (60 * (24 * days
+ (a
->tm_hour
- b
->tm_hour
))
1734 + (a
->tm_min
- b
->tm_min
))
1735 + (a
->tm_sec
- b
->tm_sec
));
1738 DEFUN ("current-time-zone", Fcurrent_time_zone
, Scurrent_time_zone
, 0, 1, 0,
1739 "Return the offset and name for the local time zone.\n\
1740 This returns a list of the form (OFFSET NAME).\n\
1741 OFFSET is an integer number of seconds ahead of UTC (east of Greenwich).\n\
1742 A negative value means west of Greenwich.\n\
1743 NAME is a string giving the name of the time zone.\n\
1744 If an argument is given, it specifies when the time zone offset is determined\n\
1745 instead of using the current time. The argument should have the form:\n\
1748 (HIGH LOW . IGNORED).\n\
1749 Thus, you can use times obtained from `current-time'\n\
1750 and from `file-attributes'.\n\
1752 Some operating systems cannot provide all this information to Emacs;\n\
1753 in this case, `current-time-zone' returns a list containing nil for\n\
1754 the data it can't find.")
1756 Lisp_Object specified_time
;
1762 if (lisp_time_argument (specified_time
, &value
, NULL
)
1763 && (t
= gmtime (&value
)) != 0
1764 && (gmt
= *t
, t
= localtime (&value
)) != 0)
1766 int offset
= tm_diff (t
, &gmt
);
1771 s
= (char *)t
->tm_zone
;
1772 #else /* not HAVE_TM_ZONE */
1774 if (t
->tm_isdst
== 0 || t
->tm_isdst
== 1)
1775 s
= tzname
[t
->tm_isdst
];
1777 #endif /* not HAVE_TM_ZONE */
1779 #if defined HAVE_TM_ZONE || defined HAVE_TZNAME
1782 /* On Japanese w32, we can get a Japanese string as time
1783 zone name. Don't accept that. */
1785 for (p
= s
; *p
&& (isalnum ((unsigned char)*p
) || *p
== ' '); ++p
)
1794 /* No local time zone name is available; use "+-NNNN" instead. */
1795 int am
= (offset
< 0 ? -offset
: offset
) / 60;
1796 sprintf (buf
, "%c%02d%02d", (offset
< 0 ? '-' : '+'), am
/60, am
%60);
1799 return Fcons (make_number (offset
), Fcons (build_string (s
), Qnil
));
1802 return Fmake_list (make_number (2), Qnil
);
1805 /* This holds the value of `environ' produced by the previous
1806 call to Fset_time_zone_rule, or 0 if Fset_time_zone_rule
1807 has never been called. */
1808 static char **environbuf
;
1810 DEFUN ("set-time-zone-rule", Fset_time_zone_rule
, Sset_time_zone_rule
, 1, 1, 0,
1811 "Set the local time zone using TZ, a string specifying a time zone rule.\n\
1812 If TZ is nil, use implementation-defined default time zone information.\n\
1813 If TZ is t, use Universal Time.")
1821 else if (EQ (tz
, Qt
))
1825 CHECK_STRING (tz
, 0);
1826 tzstring
= (char *) XSTRING (tz
)->data
;
1829 set_time_zone_rule (tzstring
);
1832 environbuf
= environ
;
1837 #ifdef LOCALTIME_CACHE
1839 /* These two values are known to load tz files in buggy implementations,
1840 i.e. Solaris 1 executables running under either Solaris 1 or Solaris 2.
1841 Their values shouldn't matter in non-buggy implementations.
1842 We don't use string literals for these strings,
1843 since if a string in the environment is in readonly
1844 storage, it runs afoul of bugs in SVR4 and Solaris 2.3.
1845 See Sun bugs 1113095 and 1114114, ``Timezone routines
1846 improperly modify environment''. */
1848 static char set_time_zone_rule_tz1
[] = "TZ=GMT+0";
1849 static char set_time_zone_rule_tz2
[] = "TZ=GMT+1";
1853 /* Set the local time zone rule to TZSTRING.
1854 This allocates memory into `environ', which it is the caller's
1855 responsibility to free. */
1858 set_time_zone_rule (tzstring
)
1862 char **from
, **to
, **newenv
;
1864 /* Make the ENVIRON vector longer with room for TZSTRING. */
1865 for (from
= environ
; *from
; from
++)
1867 envptrs
= from
- environ
+ 2;
1868 newenv
= to
= (char **) xmalloc (envptrs
* sizeof (char *)
1869 + (tzstring
? strlen (tzstring
) + 4 : 0));
1871 /* Add TZSTRING to the end of environ, as a value for TZ. */
1874 char *t
= (char *) (to
+ envptrs
);
1876 strcat (t
, tzstring
);
1880 /* Copy the old environ vector elements into NEWENV,
1881 but don't copy the TZ variable.
1882 So we have only one definition of TZ, which came from TZSTRING. */
1883 for (from
= environ
; *from
; from
++)
1884 if (strncmp (*from
, "TZ=", 3) != 0)
1890 /* If we do have a TZSTRING, NEWENV points to the vector slot where
1891 the TZ variable is stored. If we do not have a TZSTRING,
1892 TO points to the vector slot which has the terminating null. */
1894 #ifdef LOCALTIME_CACHE
1896 /* In SunOS 4.1.3_U1 and 4.1.4, if TZ has a value like
1897 "US/Pacific" that loads a tz file, then changes to a value like
1898 "XXX0" that does not load a tz file, and then changes back to
1899 its original value, the last change is (incorrectly) ignored.
1900 Also, if TZ changes twice in succession to values that do
1901 not load a tz file, tzset can dump core (see Sun bug#1225179).
1902 The following code works around these bugs. */
1906 /* Temporarily set TZ to a value that loads a tz file
1907 and that differs from tzstring. */
1909 *newenv
= (strcmp (tzstring
, set_time_zone_rule_tz1
+ 3) == 0
1910 ? set_time_zone_rule_tz2
: set_time_zone_rule_tz1
);
1916 /* The implied tzstring is unknown, so temporarily set TZ to
1917 two different values that each load a tz file. */
1918 *to
= set_time_zone_rule_tz1
;
1921 *to
= set_time_zone_rule_tz2
;
1926 /* Now TZ has the desired value, and tzset can be invoked safely. */
1933 /* Insert NARGS Lisp objects in the array ARGS by calling INSERT_FUNC
1934 (if a type of object is Lisp_Int) or INSERT_FROM_STRING_FUNC (if a
1935 type of object is Lisp_String). INHERIT is passed to
1936 INSERT_FROM_STRING_FUNC as the last argument. */
1939 general_insert_function (insert_func
, insert_from_string_func
,
1940 inherit
, nargs
, args
)
1941 void (*insert_func
) P_ ((unsigned char *, int));
1942 void (*insert_from_string_func
) P_ ((Lisp_Object
, int, int, int, int, int));
1944 register Lisp_Object
*args
;
1946 register int argnum
;
1947 register Lisp_Object val
;
1949 for (argnum
= 0; argnum
< nargs
; argnum
++)
1955 unsigned char str
[MAX_MULTIBYTE_LENGTH
];
1958 if (!NILP (current_buffer
->enable_multibyte_characters
))
1959 len
= CHAR_STRING (XFASTINT (val
), str
);
1962 str
[0] = (SINGLE_BYTE_CHAR_P (XINT (val
))
1964 : multibyte_char_to_unibyte (XINT (val
), Qnil
));
1967 (*insert_func
) (str
, len
);
1969 else if (STRINGP (val
))
1971 (*insert_from_string_func
) (val
, 0, 0,
1972 XSTRING (val
)->size
,
1973 STRING_BYTES (XSTRING (val
)),
1978 val
= wrong_type_argument (Qchar_or_string_p
, val
);
1992 /* Callers passing one argument to Finsert need not gcpro the
1993 argument "array", since the only element of the array will
1994 not be used after calling insert or insert_from_string, so
1995 we don't care if it gets trashed. */
1997 DEFUN ("insert", Finsert
, Sinsert
, 0, MANY
, 0,
1998 "Insert the arguments, either strings or characters, at point.\n\
1999 Point and before-insertion markers move forward to end up\n\
2000 after the inserted text.\n\
2001 Any other markers at the point of insertion remain before the text.\n\
2003 If the current buffer is multibyte, unibyte strings are converted\n\
2004 to multibyte for insertion (see `unibyte-char-to-multibyte').\n\
2005 If the current buffer is unibyte, multibyte strings are converted\n\
2006 to unibyte for insertion.")
2009 register Lisp_Object
*args
;
2011 general_insert_function (insert
, insert_from_string
, 0, nargs
, args
);
2015 DEFUN ("insert-and-inherit", Finsert_and_inherit
, Sinsert_and_inherit
,
2017 "Insert the arguments at point, inheriting properties from adjoining text.\n\
2018 Point and before-insertion markers move forward to end up\n\
2019 after the inserted text.\n\
2020 Any other markers at the point of insertion remain before the text.\n\
2022 If the current buffer is multibyte, unibyte strings are converted\n\
2023 to multibyte for insertion (see `unibyte-char-to-multibyte').\n\
2024 If the current buffer is unibyte, multibyte strings are converted\n\
2025 to unibyte for insertion.")
2028 register Lisp_Object
*args
;
2030 general_insert_function (insert_and_inherit
, insert_from_string
, 1,
2035 DEFUN ("insert-before-markers", Finsert_before_markers
, Sinsert_before_markers
, 0, MANY
, 0,
2036 "Insert strings or characters at point, relocating markers after the text.\n\
2037 Point and markers move forward to end up after the inserted text.\n\
2039 If the current buffer is multibyte, unibyte strings are converted\n\
2040 to multibyte for insertion (see `unibyte-char-to-multibyte').\n\
2041 If the current buffer is unibyte, multibyte strings are converted\n\
2042 to unibyte for insertion.")
2045 register Lisp_Object
*args
;
2047 general_insert_function (insert_before_markers
,
2048 insert_from_string_before_markers
, 0,
2053 DEFUN ("insert-before-markers-and-inherit", Finsert_and_inherit_before_markers
,
2054 Sinsert_and_inherit_before_markers
, 0, MANY
, 0,
2055 "Insert text at point, relocating markers and inheriting properties.\n\
2056 Point and markers move forward to end up after the inserted text.\n\
2058 If the current buffer is multibyte, unibyte strings are converted\n\
2059 to multibyte for insertion (see `unibyte-char-to-multibyte').\n\
2060 If the current buffer is unibyte, multibyte strings are converted\n\
2061 to unibyte for insertion.")
2064 register Lisp_Object
*args
;
2066 general_insert_function (insert_before_markers_and_inherit
,
2067 insert_from_string_before_markers
, 1,
2072 DEFUN ("insert-char", Finsert_char
, Sinsert_char
, 2, 3, 0,
2073 "Insert COUNT (second arg) copies of CHARACTER (first arg).\n\
2074 Both arguments are required.\n\
2075 Point, and before-insertion markers, are relocated as in the function `insert'.\n\
2076 The optional third arg INHERIT, if non-nil, says to inherit text properties\n\
2077 from adjoining text, if those properties are sticky.")
2078 (character
, count
, inherit
)
2079 Lisp_Object character
, count
, inherit
;
2081 register unsigned char *string
;
2082 register int strlen
;
2085 unsigned char str
[MAX_MULTIBYTE_LENGTH
];
2087 CHECK_NUMBER (character
, 0);
2088 CHECK_NUMBER (count
, 1);
2090 if (!NILP (current_buffer
->enable_multibyte_characters
))
2091 len
= CHAR_STRING (XFASTINT (character
), str
);
2093 str
[0] = XFASTINT (character
), len
= 1;
2094 n
= XINT (count
) * len
;
2097 strlen
= min (n
, 256 * len
);
2098 string
= (unsigned char *) alloca (strlen
);
2099 for (i
= 0; i
< strlen
; i
++)
2100 string
[i
] = str
[i
% len
];
2104 if (!NILP (inherit
))
2105 insert_and_inherit (string
, strlen
);
2107 insert (string
, strlen
);
2112 if (!NILP (inherit
))
2113 insert_and_inherit (string
, n
);
2121 /* Making strings from buffer contents. */
2123 /* Return a Lisp_String containing the text of the current buffer from
2124 START to END. If text properties are in use and the current buffer
2125 has properties in the range specified, the resulting string will also
2126 have them, if PROPS is nonzero.
2128 We don't want to use plain old make_string here, because it calls
2129 make_uninit_string, which can cause the buffer arena to be
2130 compacted. make_string has no way of knowing that the data has
2131 been moved, and thus copies the wrong data into the string. This
2132 doesn't effect most of the other users of make_string, so it should
2133 be left as is. But we should use this function when conjuring
2134 buffer substrings. */
2137 make_buffer_string (start
, end
, props
)
2141 int start_byte
= CHAR_TO_BYTE (start
);
2142 int end_byte
= CHAR_TO_BYTE (end
);
2144 return make_buffer_string_both (start
, start_byte
, end
, end_byte
, props
);
2147 /* Return a Lisp_String containing the text of the current buffer from
2148 START / START_BYTE to END / END_BYTE.
2150 If text properties are in use and the current buffer
2151 has properties in the range specified, the resulting string will also
2152 have them, if PROPS is nonzero.
2154 We don't want to use plain old make_string here, because it calls
2155 make_uninit_string, which can cause the buffer arena to be
2156 compacted. make_string has no way of knowing that the data has
2157 been moved, and thus copies the wrong data into the string. This
2158 doesn't effect most of the other users of make_string, so it should
2159 be left as is. But we should use this function when conjuring
2160 buffer substrings. */
2163 make_buffer_string_both (start
, start_byte
, end
, end_byte
, props
)
2164 int start
, start_byte
, end
, end_byte
;
2167 Lisp_Object result
, tem
, tem1
;
2169 if (start
< GPT
&& GPT
< end
)
2172 if (! NILP (current_buffer
->enable_multibyte_characters
))
2173 result
= make_uninit_multibyte_string (end
- start
, end_byte
- start_byte
);
2175 result
= make_uninit_string (end
- start
);
2176 bcopy (BYTE_POS_ADDR (start_byte
), XSTRING (result
)->data
,
2177 end_byte
- start_byte
);
2179 /* If desired, update and copy the text properties. */
2182 update_buffer_properties (start
, end
);
2184 tem
= Fnext_property_change (make_number (start
), Qnil
, make_number (end
));
2185 tem1
= Ftext_properties_at (make_number (start
), Qnil
);
2187 if (XINT (tem
) != end
|| !NILP (tem1
))
2188 copy_intervals_to_string (result
, current_buffer
, start
,
2195 /* Call Vbuffer_access_fontify_functions for the range START ... END
2196 in the current buffer, if necessary. */
2199 update_buffer_properties (start
, end
)
2202 /* If this buffer has some access functions,
2203 call them, specifying the range of the buffer being accessed. */
2204 if (!NILP (Vbuffer_access_fontify_functions
))
2206 Lisp_Object args
[3];
2209 args
[0] = Qbuffer_access_fontify_functions
;
2210 XSETINT (args
[1], start
);
2211 XSETINT (args
[2], end
);
2213 /* But don't call them if we can tell that the work
2214 has already been done. */
2215 if (!NILP (Vbuffer_access_fontified_property
))
2217 tem
= Ftext_property_any (args
[1], args
[2],
2218 Vbuffer_access_fontified_property
,
2221 Frun_hook_with_args (3, args
);
2224 Frun_hook_with_args (3, args
);
2228 DEFUN ("buffer-substring", Fbuffer_substring
, Sbuffer_substring
, 2, 2, 0,
2229 "Return the contents of part of the current buffer as a string.\n\
2230 The two arguments START and END are character positions;\n\
2231 they can be in either order.\n\
2232 The string returned is multibyte if the buffer is multibyte.\n\
2234 This function copies the text properties of that part of the buffer\n\
2235 into the result string; if you don't want the text properties,\n\
2236 use `buffer-substring-no-properties' instead.")
2238 Lisp_Object start
, end
;
2242 validate_region (&start
, &end
);
2246 return make_buffer_string (b
, e
, 1);
2249 DEFUN ("buffer-substring-no-properties", Fbuffer_substring_no_properties
,
2250 Sbuffer_substring_no_properties
, 2, 2, 0,
2251 "Return the characters of part of the buffer, without the text properties.\n\
2252 The two arguments START and END are character positions;\n\
2253 they can be in either order.")
2255 Lisp_Object start
, end
;
2259 validate_region (&start
, &end
);
2263 return make_buffer_string (b
, e
, 0);
2266 DEFUN ("buffer-string", Fbuffer_string
, Sbuffer_string
, 0, 0, 0,
2267 "Return the contents of the current buffer as a string.\n\
2268 If narrowing is in effect, this function returns only the visible part\n\
2272 return make_buffer_string (BEGV
, ZV
, 1);
2275 DEFUN ("insert-buffer-substring", Finsert_buffer_substring
, Sinsert_buffer_substring
,
2277 "Insert before point a substring of the contents of buffer BUFFER.\n\
2278 BUFFER may be a buffer or a buffer name.\n\
2279 Arguments START and END are character numbers specifying the substring.\n\
2280 They default to the beginning and the end of BUFFER.")
2282 Lisp_Object buf
, start
, end
;
2284 register int b
, e
, temp
;
2285 register struct buffer
*bp
, *obuf
;
2288 buffer
= Fget_buffer (buf
);
2291 bp
= XBUFFER (buffer
);
2292 if (NILP (bp
->name
))
2293 error ("Selecting deleted buffer");
2299 CHECK_NUMBER_COERCE_MARKER (start
, 0);
2306 CHECK_NUMBER_COERCE_MARKER (end
, 1);
2311 temp
= b
, b
= e
, e
= temp
;
2313 if (!(BUF_BEGV (bp
) <= b
&& e
<= BUF_ZV (bp
)))
2314 args_out_of_range (start
, end
);
2316 obuf
= current_buffer
;
2317 set_buffer_internal_1 (bp
);
2318 update_buffer_properties (b
, e
);
2319 set_buffer_internal_1 (obuf
);
2321 insert_from_buffer (bp
, b
, e
- b
, 0);
2325 DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings
, Scompare_buffer_substrings
,
2327 "Compare two substrings of two buffers; return result as number.\n\
2328 the value is -N if first string is less after N-1 chars,\n\
2329 +N if first string is greater after N-1 chars, or 0 if strings match.\n\
2330 Each substring is represented as three arguments: BUFFER, START and END.\n\
2331 That makes six args in all, three for each substring.\n\n\
2332 The value of `case-fold-search' in the current buffer\n\
2333 determines whether case is significant or ignored.")
2334 (buffer1
, start1
, end1
, buffer2
, start2
, end2
)
2335 Lisp_Object buffer1
, start1
, end1
, buffer2
, start2
, end2
;
2337 register int begp1
, endp1
, begp2
, endp2
, temp
;
2338 register struct buffer
*bp1
, *bp2
;
2339 register Lisp_Object
*trt
2340 = (!NILP (current_buffer
->case_fold_search
)
2341 ? XCHAR_TABLE (current_buffer
->case_canon_table
)->contents
: 0);
2343 int i1
, i2
, i1_byte
, i2_byte
;
2345 /* Find the first buffer and its substring. */
2348 bp1
= current_buffer
;
2352 buf1
= Fget_buffer (buffer1
);
2355 bp1
= XBUFFER (buf1
);
2356 if (NILP (bp1
->name
))
2357 error ("Selecting deleted buffer");
2361 begp1
= BUF_BEGV (bp1
);
2364 CHECK_NUMBER_COERCE_MARKER (start1
, 1);
2365 begp1
= XINT (start1
);
2368 endp1
= BUF_ZV (bp1
);
2371 CHECK_NUMBER_COERCE_MARKER (end1
, 2);
2372 endp1
= XINT (end1
);
2376 temp
= begp1
, begp1
= endp1
, endp1
= temp
;
2378 if (!(BUF_BEGV (bp1
) <= begp1
2380 && endp1
<= BUF_ZV (bp1
)))
2381 args_out_of_range (start1
, end1
);
2383 /* Likewise for second substring. */
2386 bp2
= current_buffer
;
2390 buf2
= Fget_buffer (buffer2
);
2393 bp2
= XBUFFER (buf2
);
2394 if (NILP (bp2
->name
))
2395 error ("Selecting deleted buffer");
2399 begp2
= BUF_BEGV (bp2
);
2402 CHECK_NUMBER_COERCE_MARKER (start2
, 4);
2403 begp2
= XINT (start2
);
2406 endp2
= BUF_ZV (bp2
);
2409 CHECK_NUMBER_COERCE_MARKER (end2
, 5);
2410 endp2
= XINT (end2
);
2414 temp
= begp2
, begp2
= endp2
, endp2
= temp
;
2416 if (!(BUF_BEGV (bp2
) <= begp2
2418 && endp2
<= BUF_ZV (bp2
)))
2419 args_out_of_range (start2
, end2
);
2423 i1_byte
= buf_charpos_to_bytepos (bp1
, i1
);
2424 i2_byte
= buf_charpos_to_bytepos (bp2
, i2
);
2426 while (i1
< endp1
&& i2
< endp2
)
2428 /* When we find a mismatch, we must compare the
2429 characters, not just the bytes. */
2432 if (! NILP (bp1
->enable_multibyte_characters
))
2434 c1
= BUF_FETCH_MULTIBYTE_CHAR (bp1
, i1_byte
);
2435 BUF_INC_POS (bp1
, i1_byte
);
2440 c1
= BUF_FETCH_BYTE (bp1
, i1
);
2441 c1
= unibyte_char_to_multibyte (c1
);
2445 if (! NILP (bp2
->enable_multibyte_characters
))
2447 c2
= BUF_FETCH_MULTIBYTE_CHAR (bp2
, i2_byte
);
2448 BUF_INC_POS (bp2
, i2_byte
);
2453 c2
= BUF_FETCH_BYTE (bp2
, i2
);
2454 c2
= unibyte_char_to_multibyte (c2
);
2460 c1
= XINT (trt
[c1
]);
2461 c2
= XINT (trt
[c2
]);
2464 return make_number (- 1 - chars
);
2466 return make_number (chars
+ 1);
2471 /* The strings match as far as they go.
2472 If one is shorter, that one is less. */
2473 if (chars
< endp1
- begp1
)
2474 return make_number (chars
+ 1);
2475 else if (chars
< endp2
- begp2
)
2476 return make_number (- chars
- 1);
2478 /* Same length too => they are equal. */
2479 return make_number (0);
2483 subst_char_in_region_unwind (arg
)
2486 return current_buffer
->undo_list
= arg
;
2490 subst_char_in_region_unwind_1 (arg
)
2493 return current_buffer
->filename
= arg
;
2496 DEFUN ("subst-char-in-region", Fsubst_char_in_region
,
2497 Ssubst_char_in_region
, 4, 5, 0,
2498 "From START to END, replace FROMCHAR with TOCHAR each time it occurs.\n\
2499 If optional arg NOUNDO is non-nil, don't record this change for undo\n\
2500 and don't mark the buffer as really changed.\n\
2501 Both characters must have the same length of multi-byte form.")
2502 (start
, end
, fromchar
, tochar
, noundo
)
2503 Lisp_Object start
, end
, fromchar
, tochar
, noundo
;
2505 register int pos
, pos_byte
, stop
, i
, len
, end_byte
;
2507 unsigned char fromstr
[MAX_MULTIBYTE_LENGTH
], tostr
[MAX_MULTIBYTE_LENGTH
];
2509 int count
= specpdl_ptr
- specpdl
;
2510 #define COMBINING_NO 0
2511 #define COMBINING_BEFORE 1
2512 #define COMBINING_AFTER 2
2513 #define COMBINING_BOTH (COMBINING_BEFORE | COMBINING_AFTER)
2514 int maybe_byte_combining
= COMBINING_NO
;
2515 int last_changed
= 0;
2516 int multibyte_p
= !NILP (current_buffer
->enable_multibyte_characters
);
2518 validate_region (&start
, &end
);
2519 CHECK_NUMBER (fromchar
, 2);
2520 CHECK_NUMBER (tochar
, 3);
2524 len
= CHAR_STRING (XFASTINT (fromchar
), fromstr
);
2525 if (CHAR_STRING (XFASTINT (tochar
), tostr
) != len
)
2526 error ("Characters in subst-char-in-region have different byte-lengths");
2527 if (!ASCII_BYTE_P (*tostr
))
2529 /* If *TOSTR is in the range 0x80..0x9F and TOCHAR is not a
2530 complete multibyte character, it may be combined with the
2531 after bytes. If it is in the range 0xA0..0xFF, it may be
2532 combined with the before and after bytes. */
2533 if (!CHAR_HEAD_P (*tostr
))
2534 maybe_byte_combining
= COMBINING_BOTH
;
2535 else if (BYTES_BY_CHAR_HEAD (*tostr
) > len
)
2536 maybe_byte_combining
= COMBINING_AFTER
;
2542 fromstr
[0] = XFASTINT (fromchar
);
2543 tostr
[0] = XFASTINT (tochar
);
2547 pos_byte
= CHAR_TO_BYTE (pos
);
2548 stop
= CHAR_TO_BYTE (XINT (end
));
2551 /* If we don't want undo, turn off putting stuff on the list.
2552 That's faster than getting rid of things,
2553 and it prevents even the entry for a first change.
2554 Also inhibit locking the file. */
2557 record_unwind_protect (subst_char_in_region_unwind
,
2558 current_buffer
->undo_list
);
2559 current_buffer
->undo_list
= Qt
;
2560 /* Don't do file-locking. */
2561 record_unwind_protect (subst_char_in_region_unwind_1
,
2562 current_buffer
->filename
);
2563 current_buffer
->filename
= Qnil
;
2566 if (pos_byte
< GPT_BYTE
)
2567 stop
= min (stop
, GPT_BYTE
);
2570 int pos_byte_next
= pos_byte
;
2572 if (pos_byte
>= stop
)
2574 if (pos_byte
>= end_byte
) break;
2577 p
= BYTE_POS_ADDR (pos_byte
);
2579 INC_POS (pos_byte_next
);
2582 if (pos_byte_next
- pos_byte
== len
2583 && p
[0] == fromstr
[0]
2585 || (p
[1] == fromstr
[1]
2586 && (len
== 2 || (p
[2] == fromstr
[2]
2587 && (len
== 3 || p
[3] == fromstr
[3]))))))
2592 modify_region (current_buffer
, changed
, XINT (end
));
2594 if (! NILP (noundo
))
2596 if (MODIFF
- 1 == SAVE_MODIFF
)
2598 if (MODIFF
- 1 == current_buffer
->auto_save_modified
)
2599 current_buffer
->auto_save_modified
++;
2603 /* Take care of the case where the new character
2604 combines with neighboring bytes. */
2605 if (maybe_byte_combining
2606 && (maybe_byte_combining
== COMBINING_AFTER
2607 ? (pos_byte_next
< Z_BYTE
2608 && ! CHAR_HEAD_P (FETCH_BYTE (pos_byte_next
)))
2609 : ((pos_byte_next
< Z_BYTE
2610 && ! CHAR_HEAD_P (FETCH_BYTE (pos_byte_next
)))
2611 || (pos_byte
> BEG_BYTE
2612 && ! ASCII_BYTE_P (FETCH_BYTE (pos_byte
- 1))))))
2614 Lisp_Object tem
, string
;
2616 struct gcpro gcpro1
;
2618 tem
= current_buffer
->undo_list
;
2621 /* Make a multibyte string containing this single character. */
2622 string
= make_multibyte_string (tostr
, 1, len
);
2623 /* replace_range is less efficient, because it moves the gap,
2624 but it handles combining correctly. */
2625 replace_range (pos
, pos
+ 1, string
,
2627 pos_byte_next
= CHAR_TO_BYTE (pos
);
2628 if (pos_byte_next
> pos_byte
)
2629 /* Before combining happened. We should not increment
2630 POS. So, to cancel the later increment of POS,
2634 INC_POS (pos_byte_next
);
2636 if (! NILP (noundo
))
2637 current_buffer
->undo_list
= tem
;
2644 record_change (pos
, 1);
2645 for (i
= 0; i
< len
; i
++) *p
++ = tostr
[i
];
2647 last_changed
= pos
+ 1;
2649 pos_byte
= pos_byte_next
;
2655 signal_after_change (changed
,
2656 last_changed
- changed
, last_changed
- changed
);
2657 update_compositions (changed
, last_changed
, CHECK_ALL
);
2660 unbind_to (count
, Qnil
);
2664 DEFUN ("translate-region", Ftranslate_region
, Stranslate_region
, 3, 3, 0,
2665 "From START to END, translate characters according to TABLE.\n\
2666 TABLE is a string; the Nth character in it is the mapping\n\
2667 for the character with code N.\n\
2668 This function does not alter multibyte characters.\n\
2669 It returns the number of characters changed.")
2673 register Lisp_Object table
;
2675 register int pos_byte
, stop
; /* Limits of the region. */
2676 register unsigned char *tt
; /* Trans table. */
2677 register int nc
; /* New character. */
2678 int cnt
; /* Number of changes made. */
2679 int size
; /* Size of translate table. */
2681 int multibyte
= !NILP (current_buffer
->enable_multibyte_characters
);
2683 validate_region (&start
, &end
);
2684 CHECK_STRING (table
, 2);
2686 size
= STRING_BYTES (XSTRING (table
));
2687 tt
= XSTRING (table
)->data
;
2689 pos_byte
= CHAR_TO_BYTE (XINT (start
));
2690 stop
= CHAR_TO_BYTE (XINT (end
));
2691 modify_region (current_buffer
, XINT (start
), XINT (end
));
2695 for (; pos_byte
< stop
; )
2697 register unsigned char *p
= BYTE_POS_ADDR (pos_byte
);
2703 oc
= STRING_CHAR_AND_LENGTH (p
, stop
- pos_byte
, len
);
2706 pos_byte_next
= pos_byte
+ len
;
2707 if (oc
< size
&& len
== 1)
2712 /* Take care of the case where the new character
2713 combines with neighboring bytes. */
2714 if (!ASCII_BYTE_P (nc
)
2715 && (CHAR_HEAD_P (nc
)
2716 ? ! CHAR_HEAD_P (FETCH_BYTE (pos_byte
+ 1))
2717 : (pos_byte
> BEG_BYTE
2718 && ! ASCII_BYTE_P (FETCH_BYTE (pos_byte
- 1)))))
2722 string
= make_multibyte_string (tt
+ oc
, 1, 1);
2723 /* This is less efficient, because it moves the gap,
2724 but it handles combining correctly. */
2725 replace_range (pos
, pos
+ 1, string
,
2727 pos_byte_next
= CHAR_TO_BYTE (pos
);
2728 if (pos_byte_next
> pos_byte
)
2729 /* Before combining happened. We should not
2730 increment POS. So, to cancel the later
2731 increment of POS, we decrease it now. */
2734 INC_POS (pos_byte_next
);
2738 record_change (pos
, 1);
2740 signal_after_change (pos
, 1, 1);
2741 update_compositions (pos
, pos
+ 1, CHECK_BORDER
);
2746 pos_byte
= pos_byte_next
;
2750 return make_number (cnt
);
2753 DEFUN ("delete-region", Fdelete_region
, Sdelete_region
, 2, 2, "r",
2754 "Delete the text between point and mark.\n\
2755 When called from a program, expects two arguments,\n\
2756 positions (integers or markers) specifying the stretch to be deleted.")
2758 Lisp_Object start
, end
;
2760 validate_region (&start
, &end
);
2761 del_range (XINT (start
), XINT (end
));
2765 DEFUN ("delete-and-extract-region", Fdelete_and_extract_region
,
2766 Sdelete_and_extract_region
, 2, 2, 0,
2767 "Delete the text between START and END and return it.")
2769 Lisp_Object start
, end
;
2771 validate_region (&start
, &end
);
2772 return del_range_1 (XINT (start
), XINT (end
), 1, 1);
2775 DEFUN ("widen", Fwiden
, Swiden
, 0, 0, "",
2776 "Remove restrictions (narrowing) from current buffer.\n\
2777 This allows the buffer's full text to be seen and edited.")
2780 if (BEG
!= BEGV
|| Z
!= ZV
)
2781 current_buffer
->clip_changed
= 1;
2783 BEGV_BYTE
= BEG_BYTE
;
2784 SET_BUF_ZV_BOTH (current_buffer
, Z
, Z_BYTE
);
2785 /* Changing the buffer bounds invalidates any recorded current column. */
2786 invalidate_current_column ();
2790 DEFUN ("narrow-to-region", Fnarrow_to_region
, Snarrow_to_region
, 2, 2, "r",
2791 "Restrict editing in this buffer to the current region.\n\
2792 The rest of the text becomes temporarily invisible and untouchable\n\
2793 but is not deleted; if you save the buffer in a file, the invisible\n\
2794 text is included in the file. \\[widen] makes all visible again.\n\
2795 See also `save-restriction'.\n\
2797 When calling from a program, pass two arguments; positions (integers\n\
2798 or markers) bounding the text that should remain visible.")
2800 register Lisp_Object start
, end
;
2802 CHECK_NUMBER_COERCE_MARKER (start
, 0);
2803 CHECK_NUMBER_COERCE_MARKER (end
, 1);
2805 if (XINT (start
) > XINT (end
))
2808 tem
= start
; start
= end
; end
= tem
;
2811 if (!(BEG
<= XINT (start
) && XINT (start
) <= XINT (end
) && XINT (end
) <= Z
))
2812 args_out_of_range (start
, end
);
2814 if (BEGV
!= XFASTINT (start
) || ZV
!= XFASTINT (end
))
2815 current_buffer
->clip_changed
= 1;
2817 SET_BUF_BEGV (current_buffer
, XFASTINT (start
));
2818 SET_BUF_ZV (current_buffer
, XFASTINT (end
));
2819 if (PT
< XFASTINT (start
))
2820 SET_PT (XFASTINT (start
));
2821 if (PT
> XFASTINT (end
))
2822 SET_PT (XFASTINT (end
));
2823 /* Changing the buffer bounds invalidates any recorded current column. */
2824 invalidate_current_column ();
2829 save_restriction_save ()
2831 if (BEGV
== BEG
&& ZV
== Z
)
2832 /* The common case that the buffer isn't narrowed.
2833 We return just the buffer object, which save_restriction_restore
2834 recognizes as meaning `no restriction'. */
2835 return Fcurrent_buffer ();
2837 /* We have to save a restriction, so return a pair of markers, one
2838 for the beginning and one for the end. */
2840 Lisp_Object beg
, end
;
2842 beg
= buildmark (BEGV
, BEGV_BYTE
);
2843 end
= buildmark (ZV
, ZV_BYTE
);
2845 /* END must move forward if text is inserted at its exact location. */
2846 XMARKER(end
)->insertion_type
= 1;
2848 return Fcons (beg
, end
);
2853 save_restriction_restore (data
)
2857 /* A pair of marks bounding a saved restriction. */
2859 struct Lisp_Marker
*beg
= XMARKER (XCAR (data
));
2860 struct Lisp_Marker
*end
= XMARKER (XCDR (data
));
2861 struct buffer
*buf
= beg
->buffer
; /* END should have the same buffer. */
2863 if (beg
->charpos
!= BUF_BEGV(buf
) || end
->charpos
!= BUF_ZV(buf
))
2864 /* The restriction has changed from the saved one, so restore
2865 the saved restriction. */
2867 int pt
= BUF_PT (buf
);
2869 SET_BUF_BEGV_BOTH (buf
, beg
->charpos
, beg
->bytepos
);
2870 SET_BUF_ZV_BOTH (buf
, end
->charpos
, end
->bytepos
);
2872 if (pt
< beg
->charpos
|| pt
> end
->charpos
)
2873 /* The point is outside the new visible range, move it inside. */
2874 SET_BUF_PT_BOTH (buf
,
2875 clip_to_bounds (beg
->charpos
, pt
, end
->charpos
),
2876 clip_to_bounds (beg
->bytepos
, BUF_PT_BYTE(buf
),
2879 buf
->clip_changed
= 1; /* Remember that the narrowing changed. */
2883 /* A buffer, which means that there was no old restriction. */
2885 struct buffer
*buf
= XBUFFER (data
);
2887 if (BUF_BEGV(buf
) != BUF_BEG(buf
) || BUF_ZV(buf
) != BUF_Z(buf
))
2888 /* The buffer has been narrowed, get rid of the narrowing. */
2890 SET_BUF_BEGV_BOTH (buf
, BUF_BEG(buf
), BUF_BEG_BYTE(buf
));
2891 SET_BUF_ZV_BOTH (buf
, BUF_Z(buf
), BUF_Z_BYTE(buf
));
2893 buf
->clip_changed
= 1; /* Remember that the narrowing changed. */
2900 DEFUN ("save-restriction", Fsave_restriction
, Ssave_restriction
, 0, UNEVALLED
, 0,
2901 "Execute BODY, saving and restoring current buffer's restrictions.\n\
2902 The buffer's restrictions make parts of the beginning and end invisible.\n\
2903 \(They are set up with `narrow-to-region' and eliminated with `widen'.)\n\
2904 This special form, `save-restriction', saves the current buffer's restrictions\n\
2905 when it is entered, and restores them when it is exited.\n\
2906 So any `narrow-to-region' within BODY lasts only until the end of the form.\n\
2907 The old restrictions settings are restored\n\
2908 even in case of abnormal exit (throw or error).\n\
2910 The value returned is the value of the last form in BODY.\n\
2912 Note: if you are using both `save-excursion' and `save-restriction',\n\
2913 use `save-excursion' outermost:\n\
2914 (save-excursion (save-restriction ...))")
2918 register Lisp_Object val
;
2919 int count
= specpdl_ptr
- specpdl
;
2921 record_unwind_protect (save_restriction_restore
, save_restriction_save ());
2922 val
= Fprogn (body
);
2923 return unbind_to (count
, val
);
2926 /* Buffer for the most recent text displayed by Fmessage_box. */
2927 static char *message_text
;
2929 /* Allocated length of that buffer. */
2930 static int message_length
;
2932 DEFUN ("message", Fmessage
, Smessage
, 1, MANY
, 0,
2933 "Print a one-line message at the bottom of the screen.\n\
2934 The first argument is a format control string, and the rest are data\n\
2935 to be formatted under control of the string. See `format' for details.\n\
2937 If the first argument is nil, clear any existing message; let the\n\
2938 minibuffer contents show.")
2950 register Lisp_Object val
;
2951 val
= Fformat (nargs
, args
);
2952 message3 (val
, STRING_BYTES (XSTRING (val
)), STRING_MULTIBYTE (val
));
2957 DEFUN ("message-box", Fmessage_box
, Smessage_box
, 1, MANY
, 0,
2958 "Display a message, in a dialog box if possible.\n\
2959 If a dialog box is not available, use the echo area.\n\
2960 The first argument is a format control string, and the rest are data\n\
2961 to be formatted under control of the string. See `format' for details.\n\
2963 If the first argument is nil, clear any existing message; let the\n\
2964 minibuffer contents show.")
2976 register Lisp_Object val
;
2977 val
= Fformat (nargs
, args
);
2979 /* The MS-DOS frames support popup menus even though they are
2980 not FRAME_WINDOW_P. */
2981 if (FRAME_WINDOW_P (XFRAME (selected_frame
))
2982 || FRAME_MSDOS_P (XFRAME (selected_frame
)))
2984 Lisp_Object pane
, menu
, obj
;
2985 struct gcpro gcpro1
;
2986 pane
= Fcons (Fcons (build_string ("OK"), Qt
), Qnil
);
2988 menu
= Fcons (val
, pane
);
2989 obj
= Fx_popup_dialog (Qt
, menu
);
2993 #endif /* HAVE_MENUS */
2994 /* Copy the data so that it won't move when we GC. */
2997 message_text
= (char *)xmalloc (80);
2998 message_length
= 80;
3000 if (STRING_BYTES (XSTRING (val
)) > message_length
)
3002 message_length
= STRING_BYTES (XSTRING (val
));
3003 message_text
= (char *)xrealloc (message_text
, message_length
);
3005 bcopy (XSTRING (val
)->data
, message_text
, STRING_BYTES (XSTRING (val
)));
3006 message2 (message_text
, STRING_BYTES (XSTRING (val
)),
3007 STRING_MULTIBYTE (val
));
3012 extern Lisp_Object last_nonmenu_event
;
3015 DEFUN ("message-or-box", Fmessage_or_box
, Smessage_or_box
, 1, MANY
, 0,
3016 "Display a message in a dialog box or in the echo area.\n\
3017 If this command was invoked with the mouse, use a dialog box if\n\
3018 `use-dialog-box' is non-nil.\n\
3019 Otherwise, use the echo area.\n\
3020 The first argument is a format control string, and the rest are data\n\
3021 to be formatted under control of the string. See `format' for details.\n\
3023 If the first argument is nil, clear any existing message; let the\n\
3024 minibuffer contents show.")
3030 if ((NILP (last_nonmenu_event
) || CONSP (last_nonmenu_event
))
3032 return Fmessage_box (nargs
, args
);
3034 return Fmessage (nargs
, args
);
3037 DEFUN ("current-message", Fcurrent_message
, Scurrent_message
, 0, 0, 0,
3038 "Return the string currently displayed in the echo area, or nil if none.")
3041 return current_message ();
3045 DEFUN ("propertize", Fpropertize
, Spropertize
, 3, MANY
, 0,
3046 "Return a copy of STRING with text properties added.\n\
3047 First argument is the string to copy.\n\
3048 Remaining arguments form a sequence of PROPERTY VALUE pairs for text\n\
3049 properties to add to the result ")
3054 Lisp_Object properties
, string
;
3055 struct gcpro gcpro1
, gcpro2
;
3058 /* Number of args must be odd. */
3059 if ((nargs
& 1) == 0 || nargs
< 3)
3060 error ("Wrong number of arguments");
3062 properties
= string
= Qnil
;
3063 GCPRO2 (properties
, string
);
3065 /* First argument must be a string. */
3066 CHECK_STRING (args
[0], 0);
3067 string
= Fcopy_sequence (args
[0]);
3069 for (i
= 1; i
< nargs
; i
+= 2)
3071 CHECK_SYMBOL (args
[i
], i
);
3072 properties
= Fcons (args
[i
], Fcons (args
[i
+ 1], properties
));
3075 Fadd_text_properties (make_number (0),
3076 make_number (XSTRING (string
)->size
),
3077 properties
, string
);
3078 RETURN_UNGCPRO (string
);
3082 /* Number of bytes that STRING will occupy when put into the result.
3083 MULTIBYTE is nonzero if the result should be multibyte. */
3085 #define CONVERTED_BYTE_SIZE(MULTIBYTE, STRING) \
3086 (((MULTIBYTE) && ! STRING_MULTIBYTE (STRING)) \
3087 ? count_size_as_multibyte (XSTRING (STRING)->data, \
3088 STRING_BYTES (XSTRING (STRING))) \
3089 : STRING_BYTES (XSTRING (STRING)))
3091 DEFUN ("format", Fformat
, Sformat
, 1, MANY
, 0,
3092 "Format a string out of a control-string and arguments.\n\
3093 The first argument is a control string.\n\
3094 The other arguments are substituted into it to make the result, a string.\n\
3095 It may contain %-sequences meaning to substitute the next argument.\n\
3096 %s means print a string argument. Actually, prints any object, with `princ'.\n\
3097 %d means print as number in decimal (%o octal, %x hex).\n\
3098 %X is like %x, but uses upper case.\n\
3099 %e means print a number in exponential notation.\n\
3100 %f means print a number in decimal-point notation.\n\
3101 %g means print a number in exponential notation\n\
3102 or decimal-point notation, whichever uses fewer characters.\n\
3103 %c means print a number as a single character.\n\
3104 %S means print any object as an s-expression (using `prin1').\n\
3105 The argument used for %d, %o, %x, %e, %f, %g or %c must be a number.\n\
3106 Use %% to put a single % into the output.")
3109 register Lisp_Object
*args
;
3111 register int n
; /* The number of the next arg to substitute */
3112 register int total
; /* An estimate of the final length */
3114 register unsigned char *format
, *end
;
3116 /* Nonzero if the output should be a multibyte string,
3117 which is true if any of the inputs is one. */
3119 /* When we make a multibyte string, we must pay attention to the
3120 byte combining problem, i.e., a byte may be combined with a
3121 multibyte charcter of the previous string. This flag tells if we
3122 must consider such a situation or not. */
3123 int maybe_combine_byte
;
3124 unsigned char *this_format
;
3132 /* It should not be necessary to GCPRO ARGS, because
3133 the caller in the interpreter should take care of that. */
3135 /* Try to determine whether the result should be multibyte.
3136 This is not always right; sometimes the result needs to be multibyte
3137 because of an object that we will pass through prin1,
3138 and in that case, we won't know it here. */
3139 for (n
= 0; n
< nargs
; n
++)
3140 if (STRINGP (args
[n
]) && STRING_MULTIBYTE (args
[n
]))
3143 CHECK_STRING (args
[0], 0);
3145 /* If we start out planning a unibyte result,
3146 and later find it has to be multibyte, we jump back to retry. */
3149 format
= XSTRING (args
[0])->data
;
3150 end
= format
+ STRING_BYTES (XSTRING (args
[0]));
3153 /* Make room in result for all the non-%-codes in the control string. */
3154 total
= 5 + CONVERTED_BYTE_SIZE (multibyte
, args
[0]);
3156 /* Add to TOTAL enough space to hold the converted arguments. */
3159 while (format
!= end
)
3160 if (*format
++ == '%')
3163 unsigned char *this_format_start
= format
- 1;
3164 int field_width
, precision
;
3166 /* General format specifications look like
3168 '%' [flags] [field-width] [precision] format
3173 field-width ::= [0-9]+
3174 precision ::= '.' [0-9]*
3176 If a field-width is specified, it specifies to which width
3177 the output should be padded with blanks, iff the output
3178 string is shorter than field-width.
3180 if precision is specified, it specifies the number of
3181 digits to print after the '.' for floats, or the max.
3182 number of chars to print from a string. */
3184 precision
= field_width
= 0;
3186 while (index ("-*# 0", *format
))
3189 if (*format
>= '0' && *format
<= '9')
3191 for (field_width
= 0; *format
>= '0' && *format
<= '9'; ++format
)
3192 field_width
= 10 * field_width
+ *format
- '0';
3198 for (precision
= 0; *format
>= '0' && *format
<= '9'; ++format
)
3199 precision
= 10 * precision
+ *format
- '0';
3202 if (format
- this_format_start
+ 1 > longest_format
)
3203 longest_format
= format
- this_format_start
+ 1;
3206 error ("Format string ends in middle of format specifier");
3209 else if (++n
>= nargs
)
3210 error ("Not enough arguments for format string");
3211 else if (*format
== 'S')
3213 /* For `S', prin1 the argument and then treat like a string. */
3214 register Lisp_Object tem
;
3215 tem
= Fprin1_to_string (args
[n
], Qnil
);
3216 if (STRING_MULTIBYTE (tem
) && ! multibyte
)
3224 else if (SYMBOLP (args
[n
]))
3226 /* Use a temp var to avoid problems when ENABLE_CHECKING
3228 struct Lisp_String
*t
= XSYMBOL (args
[n
])->name
;
3229 XSETSTRING (args
[n
], t
);
3230 if (STRING_MULTIBYTE (args
[n
]) && ! multibyte
)
3237 else if (STRINGP (args
[n
]))
3240 if (*format
!= 's' && *format
!= 'S')
3241 error ("Format specifier doesn't match argument type");
3242 thissize
= CONVERTED_BYTE_SIZE (multibyte
, args
[n
]);
3244 /* Would get MPV otherwise, since Lisp_Int's `point' to low memory. */
3245 else if (INTEGERP (args
[n
]) && *format
!= 's')
3247 /* The following loop assumes the Lisp type indicates
3248 the proper way to pass the argument.
3249 So make sure we have a flonum if the argument should
3251 if (*format
== 'e' || *format
== 'f' || *format
== 'g')
3252 args
[n
] = Ffloat (args
[n
]);
3254 if (*format
!= 'd' && *format
!= 'o' && *format
!= 'x'
3255 && *format
!= 'i' && *format
!= 'X' && *format
!= 'c')
3256 error ("Invalid format operation %%%c", *format
);
3260 && (! SINGLE_BYTE_CHAR_P (XINT (args
[n
]))
3261 || XINT (args
[n
]) == 0))
3268 args
[n
] = Fchar_to_string (args
[n
]);
3269 thissize
= STRING_BYTES (XSTRING (args
[n
]));
3272 else if (FLOATP (args
[n
]) && *format
!= 's')
3274 if (! (*format
== 'e' || *format
== 'f' || *format
== 'g'))
3275 args
[n
] = Ftruncate (args
[n
], Qnil
);
3277 /* Note that we're using sprintf to print floats,
3278 so we have to take into account what that function
3280 thissize
= MAX_10_EXP
+ 100 + precision
;
3284 /* Anything but a string, convert to a string using princ. */
3285 register Lisp_Object tem
;
3286 tem
= Fprin1_to_string (args
[n
], Qt
);
3287 if (STRING_MULTIBYTE (tem
) & ! multibyte
)
3296 thissize
= max (field_width
, thissize
);
3297 total
+= thissize
+ 4;
3300 /* Now we can no longer jump to retry.
3301 TOTAL and LONGEST_FORMAT are known for certain. */
3303 this_format
= (unsigned char *) alloca (longest_format
+ 1);
3305 /* Allocate the space for the result.
3306 Note that TOTAL is an overestimate. */
3308 buf
= (char *) alloca (total
+ 1);
3310 buf
= (char *) xmalloc (total
+ 1);
3316 /* Scan the format and store result in BUF. */
3317 format
= XSTRING (args
[0])->data
;
3318 maybe_combine_byte
= 0;
3319 while (format
!= end
)
3325 unsigned char *this_format_start
= format
;
3329 /* Process a numeric arg and skip it. */
3330 minlen
= atoi (format
);
3332 minlen
= - minlen
, negative
= 1;
3334 while ((*format
>= '0' && *format
<= '9')
3335 || *format
== '-' || *format
== ' ' || *format
== '.')
3338 if (*format
++ == '%')
3347 if (STRINGP (args
[n
]))
3349 int padding
, nbytes
, start
, end
;
3350 int width
= lisp_string_width (args
[n
], -1, NULL
, NULL
);
3352 /* If spec requires it, pad on right with spaces. */
3353 padding
= minlen
- width
;
3355 while (padding
-- > 0)
3365 && !ASCII_BYTE_P (*((unsigned char *) p
- 1))
3366 && STRING_MULTIBYTE (args
[n
])
3367 && !CHAR_HEAD_P (XSTRING (args
[n
])->data
[0]))
3368 maybe_combine_byte
= 1;
3369 nbytes
= copy_text (XSTRING (args
[n
])->data
, p
,
3370 STRING_BYTES (XSTRING (args
[n
])),
3371 STRING_MULTIBYTE (args
[n
]), multibyte
);
3373 nchars
+= XSTRING (args
[n
])->size
;
3377 while (padding
-- > 0)
3383 /* If this argument has text properties, record where
3384 in the result string it appears. */
3385 if (XSTRING (args
[n
])->intervals
)
3389 int nbytes
= nargs
* sizeof *info
;
3390 info
= (struct info
*) alloca (nbytes
);
3391 bzero (info
, nbytes
);
3394 info
[n
].start
= start
;
3398 else if (INTEGERP (args
[n
]) || FLOATP (args
[n
]))
3402 bcopy (this_format_start
, this_format
,
3403 format
- this_format_start
);
3404 this_format
[format
- this_format_start
] = 0;
3406 if (INTEGERP (args
[n
]))
3407 sprintf (p
, this_format
, XINT (args
[n
]));
3409 sprintf (p
, this_format
, XFLOAT_DATA (args
[n
]));
3413 && !ASCII_BYTE_P (*((unsigned char *) p
- 1))
3414 && !CHAR_HEAD_P (*((unsigned char *) p
)))
3415 maybe_combine_byte
= 1;
3416 this_nchars
= strlen (p
);
3418 p
+= str_to_multibyte (p
, buf
+ total
- p
, this_nchars
);
3421 nchars
+= this_nchars
;
3424 else if (STRING_MULTIBYTE (args
[0]))
3426 /* Copy a whole multibyte character. */
3429 && !ASCII_BYTE_P (*((unsigned char *) p
- 1))
3430 && !CHAR_HEAD_P (*format
))
3431 maybe_combine_byte
= 1;
3433 while (! CHAR_HEAD_P (*format
)) *p
++ = *format
++;
3438 /* Convert a single-byte character to multibyte. */
3439 int len
= copy_text (format
, p
, 1, 0, 1);
3446 *p
++ = *format
++, nchars
++;
3449 if (p
> buf
+ total
+ 1)
3452 if (maybe_combine_byte
)
3453 nchars
= multibyte_chars_in_text (buf
, p
- buf
);
3454 val
= make_specified_string (buf
, nchars
, p
- buf
, multibyte
);
3456 /* If we allocated BUF with malloc, free it too. */
3460 /* If the format string has text properties, or any of the string
3461 arguments has text properties, set up text properties of the
3464 if (XSTRING (args
[0])->intervals
|| info
)
3466 Lisp_Object len
, new_len
, props
;
3467 struct gcpro gcpro1
;
3469 /* Add text properties from the format string. */
3470 len
= make_number (XSTRING (args
[0])->size
);
3471 props
= text_property_list (args
[0], make_number (0), len
, Qnil
);
3476 new_len
= make_number (XSTRING (val
)->size
);
3477 extend_property_ranges (props
, len
, new_len
);
3478 add_text_properties_from_list (val
, props
, make_number (0));
3481 /* Add text properties from arguments. */
3483 for (n
= 1; n
< nargs
; ++n
)
3486 len
= make_number (XSTRING (args
[n
])->size
);
3487 new_len
= make_number (info
[n
].end
- info
[n
].start
);
3488 props
= text_property_list (args
[n
], make_number (0), len
, Qnil
);
3489 extend_property_ranges (props
, len
, new_len
);
3490 /* If successive arguments have properites, be sure that
3491 the value of `composition' property be the copy. */
3492 if (n
> 1 && info
[n
- 1].end
)
3493 make_composition_value_copy (props
);
3494 add_text_properties_from_list (val
, props
,
3495 make_number (info
[n
].start
));
3508 format1 (string1
, arg0
, arg1
, arg2
, arg3
, arg4
)
3509 EMACS_INT arg0
, arg1
, arg2
, arg3
, arg4
;
3523 doprnt (buf
, sizeof buf
, string1
, (char *)0, 5, (char **) args
);
3525 doprnt (buf
, sizeof buf
, string1
, (char *)0, 5, &string1
+ 1);
3527 return build_string (buf
);
3530 DEFUN ("char-equal", Fchar_equal
, Schar_equal
, 2, 2, 0,
3531 "Return t if two characters match, optionally ignoring case.\n\
3532 Both arguments must be characters (i.e. integers).\n\
3533 Case is ignored if `case-fold-search' is non-nil in the current buffer.")
3535 register Lisp_Object c1
, c2
;
3538 CHECK_NUMBER (c1
, 0);
3539 CHECK_NUMBER (c2
, 1);
3541 if (XINT (c1
) == XINT (c2
))
3543 if (NILP (current_buffer
->case_fold_search
))
3546 /* Do these in separate statements,
3547 then compare the variables.
3548 because of the way DOWNCASE uses temp variables. */
3549 i1
= DOWNCASE (XFASTINT (c1
));
3550 i2
= DOWNCASE (XFASTINT (c2
));
3551 return (i1
== i2
? Qt
: Qnil
);
3554 /* Transpose the markers in two regions of the current buffer, and
3555 adjust the ones between them if necessary (i.e.: if the regions
3558 START1, END1 are the character positions of the first region.
3559 START1_BYTE, END1_BYTE are the byte positions.
3560 START2, END2 are the character positions of the second region.
3561 START2_BYTE, END2_BYTE are the byte positions.
3563 Traverses the entire marker list of the buffer to do so, adding an
3564 appropriate amount to some, subtracting from some, and leaving the
3565 rest untouched. Most of this is copied from adjust_markers in insdel.c.
3567 It's the caller's job to ensure that START1 <= END1 <= START2 <= END2. */
3570 transpose_markers (start1
, end1
, start2
, end2
,
3571 start1_byte
, end1_byte
, start2_byte
, end2_byte
)
3572 register int start1
, end1
, start2
, end2
;
3573 register int start1_byte
, end1_byte
, start2_byte
, end2_byte
;
3575 register int amt1
, amt1_byte
, amt2
, amt2_byte
, diff
, diff_byte
, mpos
;
3576 register Lisp_Object marker
;
3578 /* Update point as if it were a marker. */
3582 TEMP_SET_PT_BOTH (PT
+ (end2
- end1
),
3583 PT_BYTE
+ (end2_byte
- end1_byte
));
3584 else if (PT
< start2
)
3585 TEMP_SET_PT_BOTH (PT
+ (end2
- start2
) - (end1
- start1
),
3586 (PT_BYTE
+ (end2_byte
- start2_byte
)
3587 - (end1_byte
- start1_byte
)));
3589 TEMP_SET_PT_BOTH (PT
- (start2
- start1
),
3590 PT_BYTE
- (start2_byte
- start1_byte
));
3592 /* We used to adjust the endpoints here to account for the gap, but that
3593 isn't good enough. Even if we assume the caller has tried to move the
3594 gap out of our way, it might still be at start1 exactly, for example;
3595 and that places it `inside' the interval, for our purposes. The amount
3596 of adjustment is nontrivial if there's a `denormalized' marker whose
3597 position is between GPT and GPT + GAP_SIZE, so it's simpler to leave
3598 the dirty work to Fmarker_position, below. */
3600 /* The difference between the region's lengths */
3601 diff
= (end2
- start2
) - (end1
- start1
);
3602 diff_byte
= (end2_byte
- start2_byte
) - (end1_byte
- start1_byte
);
3604 /* For shifting each marker in a region by the length of the other
3605 region plus the distance between the regions. */
3606 amt1
= (end2
- start2
) + (start2
- end1
);
3607 amt2
= (end1
- start1
) + (start2
- end1
);
3608 amt1_byte
= (end2_byte
- start2_byte
) + (start2_byte
- end1_byte
);
3609 amt2_byte
= (end1_byte
- start1_byte
) + (start2_byte
- end1_byte
);
3611 for (marker
= BUF_MARKERS (current_buffer
); !NILP (marker
);
3612 marker
= XMARKER (marker
)->chain
)
3614 mpos
= marker_byte_position (marker
);
3615 if (mpos
>= start1_byte
&& mpos
< end2_byte
)
3617 if (mpos
< end1_byte
)
3619 else if (mpos
< start2_byte
)
3623 XMARKER (marker
)->bytepos
= mpos
;
3625 mpos
= XMARKER (marker
)->charpos
;
3626 if (mpos
>= start1
&& mpos
< end2
)
3630 else if (mpos
< start2
)
3635 XMARKER (marker
)->charpos
= mpos
;
3639 DEFUN ("transpose-regions", Ftranspose_regions
, Stranspose_regions
, 4, 5, 0,
3640 "Transpose region START1 to END1 with START2 to END2.\n\
3641 The regions may not be overlapping, because the size of the buffer is\n\
3642 never changed in a transposition.\n\
3644 Optional fifth arg LEAVE_MARKERS, if non-nil, means don't update\n\
3645 any markers that happen to be located in the regions.\n\
3647 Transposing beyond buffer boundaries is an error.")
3648 (startr1
, endr1
, startr2
, endr2
, leave_markers
)
3649 Lisp_Object startr1
, endr1
, startr2
, endr2
, leave_markers
;
3651 register int start1
, end1
, start2
, end2
;
3652 int start1_byte
, start2_byte
, len1_byte
, len2_byte
;
3653 int gap
, len1
, len_mid
, len2
;
3654 unsigned char *start1_addr
, *start2_addr
, *temp
;
3656 INTERVAL cur_intv
, tmp_interval1
, tmp_interval_mid
, tmp_interval2
;
3657 cur_intv
= BUF_INTERVALS (current_buffer
);
3659 validate_region (&startr1
, &endr1
);
3660 validate_region (&startr2
, &endr2
);
3662 start1
= XFASTINT (startr1
);
3663 end1
= XFASTINT (endr1
);
3664 start2
= XFASTINT (startr2
);
3665 end2
= XFASTINT (endr2
);
3668 /* Swap the regions if they're reversed. */
3671 register int glumph
= start1
;
3679 len1
= end1
- start1
;
3680 len2
= end2
- start2
;
3683 error ("Transposed regions overlap");
3684 else if (start1
== end1
|| start2
== end2
)
3685 error ("Transposed region has length 0");
3687 /* The possibilities are:
3688 1. Adjacent (contiguous) regions, or separate but equal regions
3689 (no, really equal, in this case!), or
3690 2. Separate regions of unequal size.
3692 The worst case is usually No. 2. It means that (aside from
3693 potential need for getting the gap out of the way), there also
3694 needs to be a shifting of the text between the two regions. So
3695 if they are spread far apart, we are that much slower... sigh. */
3697 /* It must be pointed out that the really studly thing to do would
3698 be not to move the gap at all, but to leave it in place and work
3699 around it if necessary. This would be extremely efficient,
3700 especially considering that people are likely to do
3701 transpositions near where they are working interactively, which
3702 is exactly where the gap would be found. However, such code
3703 would be much harder to write and to read. So, if you are
3704 reading this comment and are feeling squirrely, by all means have
3705 a go! I just didn't feel like doing it, so I will simply move
3706 the gap the minimum distance to get it out of the way, and then
3707 deal with an unbroken array. */
3709 /* Make sure the gap won't interfere, by moving it out of the text
3710 we will operate on. */
3711 if (start1
< gap
&& gap
< end2
)
3713 if (gap
- start1
< end2
- gap
)
3719 start1_byte
= CHAR_TO_BYTE (start1
);
3720 start2_byte
= CHAR_TO_BYTE (start2
);
3721 len1_byte
= CHAR_TO_BYTE (end1
) - start1_byte
;
3722 len2_byte
= CHAR_TO_BYTE (end2
) - start2_byte
;
3724 #ifdef BYTE_COMBINING_DEBUG
3727 if (count_combining_before (BYTE_POS_ADDR (start2_byte
),
3728 len2_byte
, start1
, start1_byte
)
3729 || count_combining_before (BYTE_POS_ADDR (start1_byte
),
3730 len1_byte
, end2
, start2_byte
+ len2_byte
)
3731 || count_combining_after (BYTE_POS_ADDR (start1_byte
),
3732 len1_byte
, end2
, start2_byte
+ len2_byte
))
3737 if (count_combining_before (BYTE_POS_ADDR (start2_byte
),
3738 len2_byte
, start1
, start1_byte
)
3739 || count_combining_before (BYTE_POS_ADDR (start1_byte
),
3740 len1_byte
, start2
, start2_byte
)
3741 || count_combining_after (BYTE_POS_ADDR (start2_byte
),
3742 len2_byte
, end1
, start1_byte
+ len1_byte
)
3743 || count_combining_after (BYTE_POS_ADDR (start1_byte
),
3744 len1_byte
, end2
, start2_byte
+ len2_byte
))
3749 /* Hmmm... how about checking to see if the gap is large
3750 enough to use as the temporary storage? That would avoid an
3751 allocation... interesting. Later, don't fool with it now. */
3753 /* Working without memmove, for portability (sigh), so must be
3754 careful of overlapping subsections of the array... */
3756 if (end1
== start2
) /* adjacent regions */
3758 modify_region (current_buffer
, start1
, end2
);
3759 record_change (start1
, len1
+ len2
);
3761 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
3762 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
3763 Fset_text_properties (make_number (start1
), make_number (end2
),
3766 /* First region smaller than second. */
3767 if (len1_byte
< len2_byte
)
3769 /* We use alloca only if it is small,
3770 because we want to avoid stack overflow. */
3771 if (len2_byte
> 20000)
3772 temp
= (unsigned char *) xmalloc (len2_byte
);
3774 temp
= (unsigned char *) alloca (len2_byte
);
3776 /* Don't precompute these addresses. We have to compute them
3777 at the last minute, because the relocating allocator might
3778 have moved the buffer around during the xmalloc. */
3779 start1_addr
= BYTE_POS_ADDR (start1_byte
);
3780 start2_addr
= BYTE_POS_ADDR (start2_byte
);
3782 bcopy (start2_addr
, temp
, len2_byte
);
3783 bcopy (start1_addr
, start1_addr
+ len2_byte
, len1_byte
);
3784 bcopy (temp
, start1_addr
, len2_byte
);
3785 if (len2_byte
> 20000)
3789 /* First region not smaller than second. */
3791 if (len1_byte
> 20000)
3792 temp
= (unsigned char *) xmalloc (len1_byte
);
3794 temp
= (unsigned char *) alloca (len1_byte
);
3795 start1_addr
= BYTE_POS_ADDR (start1_byte
);
3796 start2_addr
= BYTE_POS_ADDR (start2_byte
);
3797 bcopy (start1_addr
, temp
, len1_byte
);
3798 bcopy (start2_addr
, start1_addr
, len2_byte
);
3799 bcopy (temp
, start1_addr
+ len2_byte
, len1_byte
);
3800 if (len1_byte
> 20000)
3803 graft_intervals_into_buffer (tmp_interval1
, start1
+ len2
,
3804 len1
, current_buffer
, 0);
3805 graft_intervals_into_buffer (tmp_interval2
, start1
,
3806 len2
, current_buffer
, 0);
3807 update_compositions (start1
, start1
+ len2
, CHECK_BORDER
);
3808 update_compositions (start1
+ len2
, end2
, CHECK_TAIL
);
3810 /* Non-adjacent regions, because end1 != start2, bleagh... */
3813 len_mid
= start2_byte
- (start1_byte
+ len1_byte
);
3815 if (len1_byte
== len2_byte
)
3816 /* Regions are same size, though, how nice. */
3818 modify_region (current_buffer
, start1
, end1
);
3819 modify_region (current_buffer
, start2
, end2
);
3820 record_change (start1
, len1
);
3821 record_change (start2
, len2
);
3822 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
3823 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
3824 Fset_text_properties (make_number (start1
), make_number (end1
),
3826 Fset_text_properties (make_number (start2
), make_number (end2
),
3829 if (len1_byte
> 20000)
3830 temp
= (unsigned char *) xmalloc (len1_byte
);
3832 temp
= (unsigned char *) alloca (len1_byte
);
3833 start1_addr
= BYTE_POS_ADDR (start1_byte
);
3834 start2_addr
= BYTE_POS_ADDR (start2_byte
);
3835 bcopy (start1_addr
, temp
, len1_byte
);
3836 bcopy (start2_addr
, start1_addr
, len2_byte
);
3837 bcopy (temp
, start2_addr
, len1_byte
);
3838 if (len1_byte
> 20000)
3840 graft_intervals_into_buffer (tmp_interval1
, start2
,
3841 len1
, current_buffer
, 0);
3842 graft_intervals_into_buffer (tmp_interval2
, start1
,
3843 len2
, current_buffer
, 0);
3846 else if (len1_byte
< len2_byte
) /* Second region larger than first */
3847 /* Non-adjacent & unequal size, area between must also be shifted. */
3849 modify_region (current_buffer
, start1
, end2
);
3850 record_change (start1
, (end2
- start1
));
3851 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
3852 tmp_interval_mid
= copy_intervals (cur_intv
, end1
, len_mid
);
3853 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
3854 Fset_text_properties (make_number (start1
), make_number (end2
),
3857 /* holds region 2 */
3858 if (len2_byte
> 20000)
3859 temp
= (unsigned char *) xmalloc (len2_byte
);
3861 temp
= (unsigned char *) alloca (len2_byte
);
3862 start1_addr
= BYTE_POS_ADDR (start1_byte
);
3863 start2_addr
= BYTE_POS_ADDR (start2_byte
);
3864 bcopy (start2_addr
, temp
, len2_byte
);
3865 bcopy (start1_addr
, start1_addr
+ len_mid
+ len2_byte
, len1_byte
);
3866 safe_bcopy (start1_addr
+ len1_byte
, start1_addr
+ len2_byte
, len_mid
);
3867 bcopy (temp
, start1_addr
, len2_byte
);
3868 if (len2_byte
> 20000)
3870 graft_intervals_into_buffer (tmp_interval1
, end2
- len1
,
3871 len1
, current_buffer
, 0);
3872 graft_intervals_into_buffer (tmp_interval_mid
, start1
+ len2
,
3873 len_mid
, current_buffer
, 0);
3874 graft_intervals_into_buffer (tmp_interval2
, start1
,
3875 len2
, current_buffer
, 0);
3878 /* Second region smaller than first. */
3880 record_change (start1
, (end2
- start1
));
3881 modify_region (current_buffer
, start1
, end2
);
3883 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
3884 tmp_interval_mid
= copy_intervals (cur_intv
, end1
, len_mid
);
3885 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
3886 Fset_text_properties (make_number (start1
), make_number (end2
),
3889 /* holds region 1 */
3890 if (len1_byte
> 20000)
3891 temp
= (unsigned char *) xmalloc (len1_byte
);
3893 temp
= (unsigned char *) alloca (len1_byte
);
3894 start1_addr
= BYTE_POS_ADDR (start1_byte
);
3895 start2_addr
= BYTE_POS_ADDR (start2_byte
);
3896 bcopy (start1_addr
, temp
, len1_byte
);
3897 bcopy (start2_addr
, start1_addr
, len2_byte
);
3898 bcopy (start1_addr
+ len1_byte
, start1_addr
+ len2_byte
, len_mid
);
3899 bcopy (temp
, start1_addr
+ len2_byte
+ len_mid
, len1_byte
);
3900 if (len1_byte
> 20000)
3902 graft_intervals_into_buffer (tmp_interval1
, end2
- len1
,
3903 len1
, current_buffer
, 0);
3904 graft_intervals_into_buffer (tmp_interval_mid
, start1
+ len2
,
3905 len_mid
, current_buffer
, 0);
3906 graft_intervals_into_buffer (tmp_interval2
, start1
,
3907 len2
, current_buffer
, 0);
3910 update_compositions (start1
, start1
+ len2
, CHECK_BORDER
);
3911 update_compositions (end2
- len1
, end2
, CHECK_BORDER
);
3914 /* When doing multiple transpositions, it might be nice
3915 to optimize this. Perhaps the markers in any one buffer
3916 should be organized in some sorted data tree. */
3917 if (NILP (leave_markers
))
3919 transpose_markers (start1
, end1
, start2
, end2
,
3920 start1_byte
, start1_byte
+ len1_byte
,
3921 start2_byte
, start2_byte
+ len2_byte
);
3922 fix_overlays_in_range (start1
, end2
);
3934 Qbuffer_access_fontify_functions
3935 = intern ("buffer-access-fontify-functions");
3936 staticpro (&Qbuffer_access_fontify_functions
);
3938 DEFVAR_LISP ("inhibit-field-text-motion", &Vinhibit_field_text_motion
,
3939 "Non-nil means.text motion commands don't notice fields.");
3940 Vinhibit_field_text_motion
= Qnil
;
3942 DEFVAR_LISP ("buffer-access-fontify-functions",
3943 &Vbuffer_access_fontify_functions
,
3944 "List of functions called by `buffer-substring' to fontify if necessary.\n\
3945 Each function is called with two arguments which specify the range\n\
3946 of the buffer being accessed.");
3947 Vbuffer_access_fontify_functions
= Qnil
;
3951 extern Lisp_Object Vprin1_to_string_buffer
;
3952 obuf
= Fcurrent_buffer ();
3953 /* Do this here, because init_buffer_once is too early--it won't work. */
3954 Fset_buffer (Vprin1_to_string_buffer
);
3955 /* Make sure buffer-access-fontify-functions is nil in this buffer. */
3956 Fset (Fmake_local_variable (intern ("buffer-access-fontify-functions")),
3961 DEFVAR_LISP ("buffer-access-fontified-property",
3962 &Vbuffer_access_fontified_property
,
3963 "Property which (if non-nil) indicates text has been fontified.\n\
3964 `buffer-substring' need not call the `buffer-access-fontify-functions'\n\
3965 functions if all the text being accessed has this property.");
3966 Vbuffer_access_fontified_property
= Qnil
;
3968 DEFVAR_LISP ("system-name", &Vsystem_name
,
3969 "The name of the machine Emacs is running on.");
3971 DEFVAR_LISP ("user-full-name", &Vuser_full_name
,
3972 "The full name of the user logged in.");
3974 DEFVAR_LISP ("user-login-name", &Vuser_login_name
,
3975 "The user's name, taken from environment variables if possible.");
3977 DEFVAR_LISP ("user-real-login-name", &Vuser_real_login_name
,
3978 "The user's name, based upon the real uid only.");
3980 defsubr (&Spropertize
);
3981 defsubr (&Schar_equal
);
3982 defsubr (&Sgoto_char
);
3983 defsubr (&Sstring_to_char
);
3984 defsubr (&Schar_to_string
);
3985 defsubr (&Sbuffer_substring
);
3986 defsubr (&Sbuffer_substring_no_properties
);
3987 defsubr (&Sbuffer_string
);
3989 defsubr (&Spoint_marker
);
3990 defsubr (&Smark_marker
);
3992 defsubr (&Sregion_beginning
);
3993 defsubr (&Sregion_end
);
3995 staticpro (&Qfield
);
3996 Qfield
= intern ("field");
3997 staticpro (&Qboundary
);
3998 Qboundary
= intern ("boundary");
3999 defsubr (&Sfield_beginning
);
4000 defsubr (&Sfield_end
);
4001 defsubr (&Sfield_string
);
4002 defsubr (&Sfield_string_no_properties
);
4003 defsubr (&Sdelete_field
);
4004 defsubr (&Sconstrain_to_field
);
4006 defsubr (&Sline_beginning_position
);
4007 defsubr (&Sline_end_position
);
4009 /* defsubr (&Smark); */
4010 /* defsubr (&Sset_mark); */
4011 defsubr (&Ssave_excursion
);
4012 defsubr (&Ssave_current_buffer
);
4014 defsubr (&Sbufsize
);
4015 defsubr (&Spoint_max
);
4016 defsubr (&Spoint_min
);
4017 defsubr (&Spoint_min_marker
);
4018 defsubr (&Spoint_max_marker
);
4019 defsubr (&Sgap_position
);
4020 defsubr (&Sgap_size
);
4021 defsubr (&Sposition_bytes
);
4022 defsubr (&Sbyte_to_position
);
4028 defsubr (&Sfollowing_char
);
4029 defsubr (&Sprevious_char
);
4030 defsubr (&Schar_after
);
4031 defsubr (&Schar_before
);
4033 defsubr (&Sinsert_before_markers
);
4034 defsubr (&Sinsert_and_inherit
);
4035 defsubr (&Sinsert_and_inherit_before_markers
);
4036 defsubr (&Sinsert_char
);
4038 defsubr (&Suser_login_name
);
4039 defsubr (&Suser_real_login_name
);
4040 defsubr (&Suser_uid
);
4041 defsubr (&Suser_real_uid
);
4042 defsubr (&Suser_full_name
);
4043 defsubr (&Semacs_pid
);
4044 defsubr (&Scurrent_time
);
4045 defsubr (&Sformat_time_string
);
4046 defsubr (&Sfloat_time
);
4047 defsubr (&Sdecode_time
);
4048 defsubr (&Sencode_time
);
4049 defsubr (&Scurrent_time_string
);
4050 defsubr (&Scurrent_time_zone
);
4051 defsubr (&Sset_time_zone_rule
);
4052 defsubr (&Ssystem_name
);
4053 defsubr (&Smessage
);
4054 defsubr (&Smessage_box
);
4055 defsubr (&Smessage_or_box
);
4056 defsubr (&Scurrent_message
);
4059 defsubr (&Sinsert_buffer_substring
);
4060 defsubr (&Scompare_buffer_substrings
);
4061 defsubr (&Ssubst_char_in_region
);
4062 defsubr (&Stranslate_region
);
4063 defsubr (&Sdelete_region
);
4064 defsubr (&Sdelete_and_extract_region
);
4066 defsubr (&Snarrow_to_region
);
4067 defsubr (&Ssave_restriction
);
4068 defsubr (&Stranspose_regions
);