1 /* Lisp functions pertaining to editing.
3 Copyright (C) 1985, 1986, 1987, 1989, 1993, 1994, 1995, 1996, 1997,
4 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
5 2009, 2010, 2011 Free Software Foundation, Inc.
7 This file is part of GNU Emacs.
9 GNU Emacs is free software: you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation, either version 3 of the License, or
12 (at your option) any later version.
14 GNU Emacs is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
24 #include <sys/types.h>
34 #ifdef HAVE_SYS_UTSNAME_H
35 #include <sys/utsname.h>
40 /* systime.h includes <sys/time.h> which, on some systems, is required
41 for <sys/resource.h>; thus systime.h must be included before
45 #if defined HAVE_SYS_RESOURCE_H
46 #include <sys/resource.h>
51 #include "intervals.h"
53 #include "character.h"
57 #include "blockinput.h"
61 #define MAX_10_EXP DBL_MAX_10_EXP
63 #define MAX_10_EXP 310
70 #ifndef USER_FULL_NAME
71 #define USER_FULL_NAME pw->pw_gecos
75 extern char **environ
;
78 #define TM_YEAR_BASE 1900
80 /* Nonzero if TM_YEAR is a struct tm's tm_year value that causes
81 asctime to have well-defined behavior. */
82 #ifndef TM_YEAR_IN_ASCTIME_RANGE
83 # define TM_YEAR_IN_ASCTIME_RANGE(tm_year) \
84 (1000 - TM_YEAR_BASE <= (tm_year) && (tm_year) <= 9999 - TM_YEAR_BASE)
87 extern size_t emacs_strftimeu (char *, size_t, const char *,
88 const struct tm
*, int);
91 extern Lisp_Object
w32_get_internal_run_time (void);
94 static int tm_diff (struct tm
*, struct tm
*);
95 static void find_field (Lisp_Object
, Lisp_Object
, Lisp_Object
,
96 EMACS_INT
*, Lisp_Object
, EMACS_INT
*);
97 static void update_buffer_properties (EMACS_INT
, EMACS_INT
);
98 static Lisp_Object
region_limit (int);
99 static size_t emacs_memftimeu (char *, size_t, const char *,
100 size_t, const struct tm
*, int);
101 static void general_insert_function (void (*) (const unsigned char *, EMACS_INT
),
102 void (*) (Lisp_Object
, EMACS_INT
,
103 EMACS_INT
, EMACS_INT
,
105 int, int, Lisp_Object
*);
106 static Lisp_Object
subst_char_in_region_unwind (Lisp_Object
);
107 static Lisp_Object
subst_char_in_region_unwind_1 (Lisp_Object
);
108 static void transpose_markers (EMACS_INT
, EMACS_INT
, EMACS_INT
, EMACS_INT
,
109 EMACS_INT
, EMACS_INT
, EMACS_INT
, EMACS_INT
);
111 Lisp_Object Qbuffer_access_fontify_functions
;
112 Lisp_Object
Fuser_full_name (Lisp_Object
);
114 /* Symbol for the text property used to mark fields. */
118 /* A special value for Qfield properties. */
120 Lisp_Object Qboundary
;
127 register unsigned char *p
;
128 struct passwd
*pw
; /* password entry for the current user */
131 /* Set up system_name even when dumping. */
135 /* Don't bother with this on initial start when just dumping out */
138 #endif /* not CANNOT_DUMP */
140 pw
= (struct passwd
*) getpwuid (getuid ());
142 /* We let the real user name default to "root" because that's quite
143 accurate on MSDOG and because it lets Emacs find the init file.
144 (The DVX libraries override the Djgpp libraries here.) */
145 Vuser_real_login_name
= build_string (pw
? pw
->pw_name
: "root");
147 Vuser_real_login_name
= build_string (pw
? pw
->pw_name
: "unknown");
150 /* Get the effective user name, by consulting environment variables,
151 or the effective uid if those are unset. */
152 user_name
= (char *) getenv ("LOGNAME");
155 user_name
= (char *) getenv ("USERNAME"); /* it's USERNAME on NT */
156 #else /* WINDOWSNT */
157 user_name
= (char *) getenv ("USER");
158 #endif /* WINDOWSNT */
161 pw
= (struct passwd
*) getpwuid (geteuid ());
162 user_name
= (char *) (pw
? pw
->pw_name
: "unknown");
164 Vuser_login_name
= build_string (user_name
);
166 /* If the user name claimed in the environment vars differs from
167 the real uid, use the claimed name to find the full name. */
168 tem
= Fstring_equal (Vuser_login_name
, Vuser_real_login_name
);
169 Vuser_full_name
= Fuser_full_name (NILP (tem
)? make_number (geteuid())
172 p
= (unsigned char *) getenv ("NAME");
174 Vuser_full_name
= build_string (p
);
175 else if (NILP (Vuser_full_name
))
176 Vuser_full_name
= build_string ("unknown");
178 #ifdef HAVE_SYS_UTSNAME_H
182 Voperating_system_release
= build_string (uts
.release
);
185 Voperating_system_release
= Qnil
;
189 DEFUN ("char-to-string", Fchar_to_string
, Schar_to_string
, 1, 1, 0,
190 doc
: /* Convert arg CHAR to a string containing that character.
191 usage: (char-to-string CHAR) */)
192 (Lisp_Object character
)
195 unsigned char str
[MAX_MULTIBYTE_LENGTH
];
197 CHECK_CHARACTER (character
);
199 len
= CHAR_STRING (XFASTINT (character
), str
);
200 return make_string_from_bytes (str
, 1, len
);
203 DEFUN ("byte-to-string", Fbyte_to_string
, Sbyte_to_string
, 1, 1, 0,
204 doc
: /* Convert arg BYTE to a unibyte string containing that byte. */)
209 if (XINT (byte
) < 0 || XINT (byte
) > 255)
210 error ("Invalid byte");
212 return make_string_from_bytes (&b
, 1, 1);
215 DEFUN ("string-to-char", Fstring_to_char
, Sstring_to_char
, 1, 1, 0,
216 doc
: /* Convert arg STRING to a character, the first character of that string.
217 A multibyte character is handled correctly. */)
218 (register Lisp_Object string
)
220 register Lisp_Object val
;
221 CHECK_STRING (string
);
224 if (STRING_MULTIBYTE (string
))
225 XSETFASTINT (val
, STRING_CHAR (SDATA (string
)));
227 XSETFASTINT (val
, SREF (string
, 0));
230 XSETFASTINT (val
, 0);
235 buildmark (EMACS_INT charpos
, EMACS_INT bytepos
)
237 register Lisp_Object mark
;
238 mark
= Fmake_marker ();
239 set_marker_both (mark
, Qnil
, charpos
, bytepos
);
243 DEFUN ("point", Fpoint
, Spoint
, 0, 0, 0,
244 doc
: /* Return value of point, as an integer.
245 Beginning of buffer is position (point-min). */)
249 XSETFASTINT (temp
, PT
);
253 DEFUN ("point-marker", Fpoint_marker
, Spoint_marker
, 0, 0, 0,
254 doc
: /* Return value of point, as a marker object. */)
257 return buildmark (PT
, PT_BYTE
);
261 clip_to_bounds (EMACS_INT lower
, EMACS_INT num
, EMACS_INT upper
)
265 else if (num
> upper
)
271 DEFUN ("goto-char", Fgoto_char
, Sgoto_char
, 1, 1, "NGoto char: ",
272 doc
: /* Set point to POSITION, a number or marker.
273 Beginning of buffer is position (point-min), end is (point-max).
275 The return value is POSITION. */)
276 (register Lisp_Object position
)
280 if (MARKERP (position
)
281 && current_buffer
== XMARKER (position
)->buffer
)
283 pos
= marker_position (position
);
285 SET_PT_BOTH (BEGV
, BEGV_BYTE
);
287 SET_PT_BOTH (ZV
, ZV_BYTE
);
289 SET_PT_BOTH (pos
, marker_byte_position (position
));
294 CHECK_NUMBER_COERCE_MARKER (position
);
296 pos
= clip_to_bounds (BEGV
, XINT (position
), ZV
);
302 /* Return the start or end position of the region.
303 BEGINNINGP non-zero means return the start.
304 If there is no region active, signal an error. */
307 region_limit (int beginningp
)
311 if (!NILP (Vtransient_mark_mode
)
312 && NILP (Vmark_even_if_inactive
)
313 && NILP (current_buffer
->mark_active
))
314 xsignal0 (Qmark_inactive
);
316 m
= Fmarker_position (current_buffer
->mark
);
318 error ("The mark is not set now, so there is no region");
320 if ((PT
< XFASTINT (m
)) == (beginningp
!= 0))
321 m
= make_number (PT
);
325 DEFUN ("region-beginning", Fregion_beginning
, Sregion_beginning
, 0, 0, 0,
326 doc
: /* Return the integer value of point or mark, whichever is smaller. */)
329 return region_limit (1);
332 DEFUN ("region-end", Fregion_end
, Sregion_end
, 0, 0, 0,
333 doc
: /* Return the integer value of point or mark, whichever is larger. */)
336 return region_limit (0);
339 DEFUN ("mark-marker", Fmark_marker
, Smark_marker
, 0, 0, 0,
340 doc
: /* Return this buffer's mark, as a marker object.
341 Watch out! Moving this marker changes the mark position.
342 If you set the marker not to point anywhere, the buffer will have no mark. */)
345 return current_buffer
->mark
;
349 /* Find all the overlays in the current buffer that touch position POS.
350 Return the number found, and store them in a vector in VEC
354 overlays_around (EMACS_INT pos
, Lisp_Object
*vec
, int len
)
356 Lisp_Object overlay
, start
, end
;
357 struct Lisp_Overlay
*tail
;
358 EMACS_INT startpos
, endpos
;
361 for (tail
= current_buffer
->overlays_before
; tail
; tail
= tail
->next
)
363 XSETMISC (overlay
, tail
);
365 end
= OVERLAY_END (overlay
);
366 endpos
= OVERLAY_POSITION (end
);
369 start
= OVERLAY_START (overlay
);
370 startpos
= OVERLAY_POSITION (start
);
375 /* Keep counting overlays even if we can't return them all. */
380 for (tail
= current_buffer
->overlays_after
; tail
; tail
= tail
->next
)
382 XSETMISC (overlay
, tail
);
384 start
= OVERLAY_START (overlay
);
385 startpos
= OVERLAY_POSITION (start
);
388 end
= OVERLAY_END (overlay
);
389 endpos
= OVERLAY_POSITION (end
);
401 /* Return the value of property PROP, in OBJECT at POSITION.
402 It's the value of PROP that a char inserted at POSITION would get.
403 OBJECT is optional and defaults to the current buffer.
404 If OBJECT is a buffer, then overlay properties are considered as well as
406 If OBJECT is a window, then that window's buffer is used, but
407 window-specific overlays are considered only if they are associated
410 get_pos_property (Lisp_Object position
, register Lisp_Object prop
, Lisp_Object object
)
412 CHECK_NUMBER_COERCE_MARKER (position
);
415 XSETBUFFER (object
, current_buffer
);
416 else if (WINDOWP (object
))
417 object
= XWINDOW (object
)->buffer
;
419 if (!BUFFERP (object
))
420 /* pos-property only makes sense in buffers right now, since strings
421 have no overlays and no notion of insertion for which stickiness
423 return Fget_text_property (position
, prop
, object
);
426 EMACS_INT posn
= XINT (position
);
428 Lisp_Object
*overlay_vec
, tem
;
429 struct buffer
*obuf
= current_buffer
;
431 set_buffer_temp (XBUFFER (object
));
433 /* First try with room for 40 overlays. */
435 overlay_vec
= (Lisp_Object
*) alloca (noverlays
* sizeof (Lisp_Object
));
436 noverlays
= overlays_around (posn
, overlay_vec
, noverlays
);
438 /* If there are more than 40,
439 make enough space for all, and try again. */
442 overlay_vec
= (Lisp_Object
*) alloca (noverlays
* sizeof (Lisp_Object
));
443 noverlays
= overlays_around (posn
, overlay_vec
, noverlays
);
445 noverlays
= sort_overlays (overlay_vec
, noverlays
, NULL
);
447 set_buffer_temp (obuf
);
449 /* Now check the overlays in order of decreasing priority. */
450 while (--noverlays
>= 0)
452 Lisp_Object ol
= overlay_vec
[noverlays
];
453 tem
= Foverlay_get (ol
, prop
);
456 /* Check the overlay is indeed active at point. */
457 Lisp_Object start
= OVERLAY_START (ol
), finish
= OVERLAY_END (ol
);
458 if ((OVERLAY_POSITION (start
) == posn
459 && XMARKER (start
)->insertion_type
== 1)
460 || (OVERLAY_POSITION (finish
) == posn
461 && XMARKER (finish
)->insertion_type
== 0))
462 ; /* The overlay will not cover a char inserted at point. */
470 { /* Now check the text properties. */
471 int stickiness
= text_property_stickiness (prop
, position
, object
);
473 return Fget_text_property (position
, prop
, object
);
474 else if (stickiness
< 0
475 && XINT (position
) > BUF_BEGV (XBUFFER (object
)))
476 return Fget_text_property (make_number (XINT (position
) - 1),
484 /* Find the field surrounding POS in *BEG and *END. If POS is nil,
485 the value of point is used instead. If BEG or END is null,
486 means don't store the beginning or end of the field.
488 BEG_LIMIT and END_LIMIT serve to limit the ranged of the returned
489 results; they do not effect boundary behavior.
491 If MERGE_AT_BOUNDARY is nonzero, then if POS is at the very first
492 position of a field, then the beginning of the previous field is
493 returned instead of the beginning of POS's field (since the end of a
494 field is actually also the beginning of the next input field, this
495 behavior is sometimes useful). Additionally in the MERGE_AT_BOUNDARY
496 true case, if two fields are separated by a field with the special
497 value `boundary', and POS lies within it, then the two separated
498 fields are considered to be adjacent, and POS between them, when
499 finding the beginning and ending of the "merged" field.
501 Either BEG or END may be 0, in which case the corresponding value
505 find_field (Lisp_Object pos
, Lisp_Object merge_at_boundary
,
506 Lisp_Object beg_limit
,
507 EMACS_INT
*beg
, Lisp_Object end_limit
, EMACS_INT
*end
)
509 /* Fields right before and after the point. */
510 Lisp_Object before_field
, after_field
;
511 /* 1 if POS counts as the start of a field. */
512 int at_field_start
= 0;
513 /* 1 if POS counts as the end of a field. */
514 int at_field_end
= 0;
517 XSETFASTINT (pos
, PT
);
519 CHECK_NUMBER_COERCE_MARKER (pos
);
522 = get_char_property_and_overlay (pos
, Qfield
, Qnil
, NULL
);
524 = (XFASTINT (pos
) > BEGV
525 ? get_char_property_and_overlay (make_number (XINT (pos
) - 1),
527 /* Using nil here would be a more obvious choice, but it would
528 fail when the buffer starts with a non-sticky field. */
531 /* See if we need to handle the case where MERGE_AT_BOUNDARY is nil
532 and POS is at beginning of a field, which can also be interpreted
533 as the end of the previous field. Note that the case where if
534 MERGE_AT_BOUNDARY is non-nil (see function comment) is actually the
535 more natural one; then we avoid treating the beginning of a field
537 if (NILP (merge_at_boundary
))
539 Lisp_Object field
= get_pos_property (pos
, Qfield
, Qnil
);
540 if (!EQ (field
, after_field
))
542 if (!EQ (field
, before_field
))
544 if (NILP (field
) && at_field_start
&& at_field_end
)
545 /* If an inserted char would have a nil field while the surrounding
546 text is non-nil, we're probably not looking at a
547 zero-length field, but instead at a non-nil field that's
548 not intended for editing (such as comint's prompts). */
549 at_field_end
= at_field_start
= 0;
552 /* Note about special `boundary' fields:
554 Consider the case where the point (`.') is between the fields `x' and `y':
558 In this situation, if merge_at_boundary is true, we consider the
559 `x' and `y' fields as forming one big merged field, and so the end
560 of the field is the end of `y'.
562 However, if `x' and `y' are separated by a special `boundary' field
563 (a field with a `field' char-property of 'boundary), then we ignore
564 this special field when merging adjacent fields. Here's the same
565 situation, but with a `boundary' field between the `x' and `y' fields:
569 Here, if point is at the end of `x', the beginning of `y', or
570 anywhere in-between (within the `boundary' field), we merge all
571 three fields and consider the beginning as being the beginning of
572 the `x' field, and the end as being the end of the `y' field. */
577 /* POS is at the edge of a field, and we should consider it as
578 the beginning of the following field. */
579 *beg
= XFASTINT (pos
);
581 /* Find the previous field boundary. */
584 if (!NILP (merge_at_boundary
) && EQ (before_field
, Qboundary
))
585 /* Skip a `boundary' field. */
586 p
= Fprevious_single_char_property_change (p
, Qfield
, Qnil
,
589 p
= Fprevious_single_char_property_change (p
, Qfield
, Qnil
,
591 *beg
= NILP (p
) ? BEGV
: XFASTINT (p
);
598 /* POS is at the edge of a field, and we should consider it as
599 the end of the previous field. */
600 *end
= XFASTINT (pos
);
602 /* Find the next field boundary. */
604 if (!NILP (merge_at_boundary
) && EQ (after_field
, Qboundary
))
605 /* Skip a `boundary' field. */
606 pos
= Fnext_single_char_property_change (pos
, Qfield
, Qnil
,
609 pos
= Fnext_single_char_property_change (pos
, Qfield
, Qnil
,
611 *end
= NILP (pos
) ? ZV
: XFASTINT (pos
);
617 DEFUN ("delete-field", Fdelete_field
, Sdelete_field
, 0, 1, 0,
618 doc
: /* Delete the field surrounding POS.
619 A field is a region of text with the same `field' property.
620 If POS is nil, the value of point is used for POS. */)
624 find_field (pos
, Qnil
, Qnil
, &beg
, Qnil
, &end
);
626 del_range (beg
, end
);
630 DEFUN ("field-string", Ffield_string
, Sfield_string
, 0, 1, 0,
631 doc
: /* Return the contents of the field surrounding POS as a string.
632 A field is a region of text with the same `field' property.
633 If POS is nil, the value of point is used for POS. */)
637 find_field (pos
, Qnil
, Qnil
, &beg
, Qnil
, &end
);
638 return make_buffer_string (beg
, end
, 1);
641 DEFUN ("field-string-no-properties", Ffield_string_no_properties
, Sfield_string_no_properties
, 0, 1, 0,
642 doc
: /* Return the contents of the field around POS, without text properties.
643 A field is a region of text with the same `field' property.
644 If POS is nil, the value of point is used for POS. */)
648 find_field (pos
, Qnil
, Qnil
, &beg
, Qnil
, &end
);
649 return make_buffer_string (beg
, end
, 0);
652 DEFUN ("field-beginning", Ffield_beginning
, Sfield_beginning
, 0, 3, 0,
653 doc
: /* Return the beginning of the field surrounding POS.
654 A field is a region of text with the same `field' property.
655 If POS is nil, the value of point is used for POS.
656 If ESCAPE-FROM-EDGE is non-nil and POS is at the beginning of its
657 field, then the beginning of the *previous* field is returned.
658 If LIMIT is non-nil, it is a buffer position; if the beginning of the field
659 is before LIMIT, then LIMIT will be returned instead. */)
660 (Lisp_Object pos
, Lisp_Object escape_from_edge
, Lisp_Object limit
)
663 find_field (pos
, escape_from_edge
, limit
, &beg
, Qnil
, 0);
664 return make_number (beg
);
667 DEFUN ("field-end", Ffield_end
, Sfield_end
, 0, 3, 0,
668 doc
: /* Return the end of the field surrounding POS.
669 A field is a region of text with the same `field' property.
670 If POS is nil, the value of point is used for POS.
671 If ESCAPE-FROM-EDGE is non-nil and POS is at the end of its field,
672 then the end of the *following* field is returned.
673 If LIMIT is non-nil, it is a buffer position; if the end of the field
674 is after LIMIT, then LIMIT will be returned instead. */)
675 (Lisp_Object pos
, Lisp_Object escape_from_edge
, Lisp_Object limit
)
678 find_field (pos
, escape_from_edge
, Qnil
, 0, limit
, &end
);
679 return make_number (end
);
682 DEFUN ("constrain-to-field", Fconstrain_to_field
, Sconstrain_to_field
, 2, 5, 0,
683 doc
: /* Return the position closest to NEW-POS that is in the same field as OLD-POS.
685 A field is a region of text with the same `field' property.
686 If NEW-POS is nil, then the current point is used instead, and set to the
687 constrained position if that is different.
689 If OLD-POS is at the boundary of two fields, then the allowable
690 positions for NEW-POS depends on the value of the optional argument
691 ESCAPE-FROM-EDGE: If ESCAPE-FROM-EDGE is nil, then NEW-POS is
692 constrained to the field that has the same `field' char-property
693 as any new characters inserted at OLD-POS, whereas if ESCAPE-FROM-EDGE
694 is non-nil, NEW-POS is constrained to the union of the two adjacent
695 fields. Additionally, if two fields are separated by another field with
696 the special value `boundary', then any point within this special field is
697 also considered to be `on the boundary'.
699 If the optional argument ONLY-IN-LINE is non-nil and constraining
700 NEW-POS would move it to a different line, NEW-POS is returned
701 unconstrained. This useful for commands that move by line, like
702 \\[next-line] or \\[beginning-of-line], which should generally respect field boundaries
703 only in the case where they can still move to the right line.
705 If the optional argument INHIBIT-CAPTURE-PROPERTY is non-nil, and OLD-POS has
706 a non-nil property of that name, then any field boundaries are ignored.
708 Field boundaries are not noticed if `inhibit-field-text-motion' is non-nil. */)
709 (Lisp_Object new_pos
, Lisp_Object old_pos
, Lisp_Object escape_from_edge
, Lisp_Object only_in_line
, Lisp_Object inhibit_capture_property
)
711 /* If non-zero, then the original point, before re-positioning. */
712 EMACS_INT orig_point
= 0;
714 Lisp_Object prev_old
, prev_new
;
717 /* Use the current point, and afterwards, set it. */
720 XSETFASTINT (new_pos
, PT
);
723 CHECK_NUMBER_COERCE_MARKER (new_pos
);
724 CHECK_NUMBER_COERCE_MARKER (old_pos
);
726 fwd
= (XFASTINT (new_pos
) > XFASTINT (old_pos
));
728 prev_old
= make_number (XFASTINT (old_pos
) - 1);
729 prev_new
= make_number (XFASTINT (new_pos
) - 1);
731 if (NILP (Vinhibit_field_text_motion
)
732 && !EQ (new_pos
, old_pos
)
733 && (!NILP (Fget_char_property (new_pos
, Qfield
, Qnil
))
734 || !NILP (Fget_char_property (old_pos
, Qfield
, Qnil
))
735 /* To recognize field boundaries, we must also look at the
736 previous positions; we could use `get_pos_property'
737 instead, but in itself that would fail inside non-sticky
738 fields (like comint prompts). */
739 || (XFASTINT (new_pos
) > BEGV
740 && !NILP (Fget_char_property (prev_new
, Qfield
, Qnil
)))
741 || (XFASTINT (old_pos
) > BEGV
742 && !NILP (Fget_char_property (prev_old
, Qfield
, Qnil
))))
743 && (NILP (inhibit_capture_property
)
744 /* Field boundaries are again a problem; but now we must
745 decide the case exactly, so we need to call
746 `get_pos_property' as well. */
747 || (NILP (get_pos_property (old_pos
, inhibit_capture_property
, Qnil
))
748 && (XFASTINT (old_pos
) <= BEGV
749 || NILP (Fget_char_property (old_pos
, inhibit_capture_property
, Qnil
))
750 || NILP (Fget_char_property (prev_old
, inhibit_capture_property
, Qnil
))))))
751 /* It is possible that NEW_POS is not within the same field as
752 OLD_POS; try to move NEW_POS so that it is. */
755 Lisp_Object field_bound
;
758 field_bound
= Ffield_end (old_pos
, escape_from_edge
, new_pos
);
760 field_bound
= Ffield_beginning (old_pos
, escape_from_edge
, new_pos
);
762 if (/* See if ESCAPE_FROM_EDGE caused FIELD_BOUND to jump to the
763 other side of NEW_POS, which would mean that NEW_POS is
764 already acceptable, and it's not necessary to constrain it
766 ((XFASTINT (field_bound
) < XFASTINT (new_pos
)) ? fwd
: !fwd
)
767 /* NEW_POS should be constrained, but only if either
768 ONLY_IN_LINE is nil (in which case any constraint is OK),
769 or NEW_POS and FIELD_BOUND are on the same line (in which
770 case the constraint is OK even if ONLY_IN_LINE is non-nil). */
771 && (NILP (only_in_line
)
772 /* This is the ONLY_IN_LINE case, check that NEW_POS and
773 FIELD_BOUND are on the same line by seeing whether
774 there's an intervening newline or not. */
775 || (scan_buffer ('\n',
776 XFASTINT (new_pos
), XFASTINT (field_bound
),
777 fwd
? -1 : 1, &shortage
, 1),
779 /* Constrain NEW_POS to FIELD_BOUND. */
780 new_pos
= field_bound
;
782 if (orig_point
&& XFASTINT (new_pos
) != orig_point
)
783 /* The NEW_POS argument was originally nil, so automatically set PT. */
784 SET_PT (XFASTINT (new_pos
));
791 DEFUN ("line-beginning-position",
792 Fline_beginning_position
, Sline_beginning_position
, 0, 1, 0,
793 doc
: /* Return the character position of the first character on the current line.
794 With argument N not nil or 1, move forward N - 1 lines first.
795 If scan reaches end of buffer, return that position.
797 The returned position is of the first character in the logical order,
798 i.e. the one that has the smallest character position.
800 This function constrains the returned position to the current field
801 unless that would be on a different line than the original,
802 unconstrained result. If N is nil or 1, and a front-sticky field
803 starts at point, the scan stops as soon as it starts. To ignore field
804 boundaries bind `inhibit-field-text-motion' to t.
806 This function does not move point. */)
809 EMACS_INT orig
, orig_byte
, end
;
810 int count
= SPECPDL_INDEX ();
811 specbind (Qinhibit_point_motion_hooks
, Qt
);
820 Fforward_line (make_number (XINT (n
) - 1));
823 SET_PT_BOTH (orig
, orig_byte
);
825 unbind_to (count
, Qnil
);
827 /* Return END constrained to the current input field. */
828 return Fconstrain_to_field (make_number (end
), make_number (orig
),
829 XINT (n
) != 1 ? Qt
: Qnil
,
833 DEFUN ("line-end-position", Fline_end_position
, Sline_end_position
, 0, 1, 0,
834 doc
: /* Return the character position of the last character on the current line.
835 With argument N not nil or 1, move forward N - 1 lines first.
836 If scan reaches end of buffer, return that position.
838 The returned position is of the last character in the logical order,
839 i.e. the character whose buffer position is the largest one.
841 This function constrains the returned position to the current field
842 unless that would be on a different line than the original,
843 unconstrained result. If N is nil or 1, and a rear-sticky field ends
844 at point, the scan stops as soon as it starts. To ignore field
845 boundaries bind `inhibit-field-text-motion' to t.
847 This function does not move point. */)
858 end_pos
= find_before_next_newline (orig
, 0, XINT (n
) - (XINT (n
) <= 0));
860 /* Return END_POS constrained to the current input field. */
861 return Fconstrain_to_field (make_number (end_pos
), make_number (orig
),
867 save_excursion_save (void)
869 int visible
= (XBUFFER (XWINDOW (selected_window
)->buffer
)
872 return Fcons (Fpoint_marker (),
873 Fcons (Fcopy_marker (current_buffer
->mark
, Qnil
),
874 Fcons (visible
? Qt
: Qnil
,
875 Fcons (current_buffer
->mark_active
,
880 save_excursion_restore (Lisp_Object info
)
882 Lisp_Object tem
, tem1
, omark
, nmark
;
883 struct gcpro gcpro1
, gcpro2
, gcpro3
;
886 tem
= Fmarker_buffer (XCAR (info
));
887 /* If buffer being returned to is now deleted, avoid error */
888 /* Otherwise could get error here while unwinding to top level
890 /* In that case, Fmarker_buffer returns nil now. */
894 omark
= nmark
= Qnil
;
895 GCPRO3 (info
, omark
, nmark
);
902 unchain_marker (XMARKER (tem
));
907 omark
= Fmarker_position (current_buffer
->mark
);
908 Fset_marker (current_buffer
->mark
, tem
, Fcurrent_buffer ());
909 nmark
= Fmarker_position (tem
);
910 unchain_marker (XMARKER (tem
));
914 visible_p
= !NILP (XCAR (info
));
916 #if 0 /* We used to make the current buffer visible in the selected window
917 if that was true previously. That avoids some anomalies.
918 But it creates others, and it wasn't documented, and it is simpler
919 and cleaner never to alter the window/buffer connections. */
922 && current_buffer
!= XBUFFER (XWINDOW (selected_window
)->buffer
))
923 Fswitch_to_buffer (Fcurrent_buffer (), Qnil
);
929 tem1
= current_buffer
->mark_active
;
930 current_buffer
->mark_active
= tem
;
932 if (!NILP (Vrun_hooks
))
934 /* If mark is active now, and either was not active
935 or was at a different place, run the activate hook. */
936 if (! NILP (current_buffer
->mark_active
))
938 if (! EQ (omark
, nmark
))
939 call1 (Vrun_hooks
, intern ("activate-mark-hook"));
941 /* If mark has ceased to be active, run deactivate hook. */
942 else if (! NILP (tem1
))
943 call1 (Vrun_hooks
, intern ("deactivate-mark-hook"));
946 /* If buffer was visible in a window, and a different window was
947 selected, and the old selected window is still showing this
948 buffer, restore point in that window. */
951 && !EQ (tem
, selected_window
)
952 && (tem1
= XWINDOW (tem
)->buffer
,
953 (/* Window is live... */
955 /* ...and it shows the current buffer. */
956 && XBUFFER (tem1
) == current_buffer
)))
957 Fset_window_point (tem
, make_number (PT
));
963 DEFUN ("save-excursion", Fsave_excursion
, Ssave_excursion
, 0, UNEVALLED
, 0,
964 doc
: /* Save point, mark, and current buffer; execute BODY; restore those things.
965 Executes BODY just like `progn'.
966 The values of point, mark and the current buffer are restored
967 even in case of abnormal exit (throw or error).
968 The state of activation of the mark is also restored.
970 This construct does not save `deactivate-mark', and therefore
971 functions that change the buffer will still cause deactivation
972 of the mark at the end of the command. To prevent that, bind
973 `deactivate-mark' with `let'.
975 If you only want to save the current buffer but not point nor mark,
976 then just use `save-current-buffer', or even `with-current-buffer'.
978 usage: (save-excursion &rest BODY) */)
981 register Lisp_Object val
;
982 int count
= SPECPDL_INDEX ();
984 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
987 return unbind_to (count
, val
);
990 DEFUN ("save-current-buffer", Fsave_current_buffer
, Ssave_current_buffer
, 0, UNEVALLED
, 0,
991 doc
: /* Save the current buffer; execute BODY; restore the current buffer.
992 Executes BODY just like `progn'.
993 usage: (save-current-buffer &rest BODY) */)
997 int count
= SPECPDL_INDEX ();
999 record_unwind_protect (set_buffer_if_live
, Fcurrent_buffer ());
1001 val
= Fprogn (args
);
1002 return unbind_to (count
, val
);
1005 DEFUN ("buffer-size", Fbufsize
, Sbufsize
, 0, 1, 0,
1006 doc
: /* Return the number of characters in the current buffer.
1007 If BUFFER, return the number of characters in that buffer instead. */)
1008 (Lisp_Object buffer
)
1011 return make_number (Z
- BEG
);
1014 CHECK_BUFFER (buffer
);
1015 return make_number (BUF_Z (XBUFFER (buffer
))
1016 - BUF_BEG (XBUFFER (buffer
)));
1020 DEFUN ("point-min", Fpoint_min
, Spoint_min
, 0, 0, 0,
1021 doc
: /* Return the minimum permissible value of point in the current buffer.
1022 This is 1, unless narrowing (a buffer restriction) is in effect. */)
1026 XSETFASTINT (temp
, BEGV
);
1030 DEFUN ("point-min-marker", Fpoint_min_marker
, Spoint_min_marker
, 0, 0, 0,
1031 doc
: /* Return a marker to the minimum permissible value of point in this buffer.
1032 This is the beginning, unless narrowing (a buffer restriction) is in effect. */)
1035 return buildmark (BEGV
, BEGV_BYTE
);
1038 DEFUN ("point-max", Fpoint_max
, Spoint_max
, 0, 0, 0,
1039 doc
: /* Return the maximum permissible value of point in the current buffer.
1040 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)
1041 is in effect, in which case it is less. */)
1045 XSETFASTINT (temp
, ZV
);
1049 DEFUN ("point-max-marker", Fpoint_max_marker
, Spoint_max_marker
, 0, 0, 0,
1050 doc
: /* Return a marker to the maximum permissible value of point in this buffer.
1051 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)
1052 is in effect, in which case it is less. */)
1055 return buildmark (ZV
, ZV_BYTE
);
1058 DEFUN ("gap-position", Fgap_position
, Sgap_position
, 0, 0, 0,
1059 doc
: /* Return the position of the gap, in the current buffer.
1060 See also `gap-size'. */)
1064 XSETFASTINT (temp
, GPT
);
1068 DEFUN ("gap-size", Fgap_size
, Sgap_size
, 0, 0, 0,
1069 doc
: /* Return the size of the current buffer's gap.
1070 See also `gap-position'. */)
1074 XSETFASTINT (temp
, GAP_SIZE
);
1078 DEFUN ("position-bytes", Fposition_bytes
, Sposition_bytes
, 1, 1, 0,
1079 doc
: /* Return the byte position for character position POSITION.
1080 If POSITION is out of range, the value is nil. */)
1081 (Lisp_Object position
)
1083 CHECK_NUMBER_COERCE_MARKER (position
);
1084 if (XINT (position
) < BEG
|| XINT (position
) > Z
)
1086 return make_number (CHAR_TO_BYTE (XINT (position
)));
1089 DEFUN ("byte-to-position", Fbyte_to_position
, Sbyte_to_position
, 1, 1, 0,
1090 doc
: /* Return the character position for byte position BYTEPOS.
1091 If BYTEPOS is out of range, the value is nil. */)
1092 (Lisp_Object bytepos
)
1094 CHECK_NUMBER (bytepos
);
1095 if (XINT (bytepos
) < BEG_BYTE
|| XINT (bytepos
) > Z_BYTE
)
1097 return make_number (BYTE_TO_CHAR (XINT (bytepos
)));
1100 DEFUN ("following-char", Ffollowing_char
, Sfollowing_char
, 0, 0, 0,
1101 doc
: /* Return the character following point, as a number.
1102 At the end of the buffer or accessible region, return 0. */)
1107 XSETFASTINT (temp
, 0);
1109 XSETFASTINT (temp
, FETCH_CHAR (PT_BYTE
));
1113 DEFUN ("preceding-char", Fprevious_char
, Sprevious_char
, 0, 0, 0,
1114 doc
: /* Return the character preceding point, as a number.
1115 At the beginning of the buffer or accessible region, return 0. */)
1120 XSETFASTINT (temp
, 0);
1121 else if (!NILP (current_buffer
->enable_multibyte_characters
))
1123 EMACS_INT pos
= PT_BYTE
;
1125 XSETFASTINT (temp
, FETCH_CHAR (pos
));
1128 XSETFASTINT (temp
, FETCH_BYTE (PT_BYTE
- 1));
1132 DEFUN ("bobp", Fbobp
, Sbobp
, 0, 0, 0,
1133 doc
: /* Return t if point is at the beginning of the buffer.
1134 If the buffer is narrowed, this means the beginning of the narrowed part. */)
1142 DEFUN ("eobp", Feobp
, Seobp
, 0, 0, 0,
1143 doc
: /* Return t if point is at the end of the buffer.
1144 If the buffer is narrowed, this means the end of the narrowed part. */)
1152 DEFUN ("bolp", Fbolp
, Sbolp
, 0, 0, 0,
1153 doc
: /* Return t if point is at the beginning of a line. */)
1156 if (PT
== BEGV
|| FETCH_BYTE (PT_BYTE
- 1) == '\n')
1161 DEFUN ("eolp", Feolp
, Seolp
, 0, 0, 0,
1162 doc
: /* Return t if point is at the end of a line.
1163 `End of a line' includes point being at the end of the buffer. */)
1166 if (PT
== ZV
|| FETCH_BYTE (PT_BYTE
) == '\n')
1171 DEFUN ("char-after", Fchar_after
, Schar_after
, 0, 1, 0,
1172 doc
: /* Return character in current buffer at position POS.
1173 POS is an integer or a marker and defaults to point.
1174 If POS is out of range, the value is nil. */)
1177 register EMACS_INT pos_byte
;
1182 XSETFASTINT (pos
, PT
);
1187 pos_byte
= marker_byte_position (pos
);
1188 if (pos_byte
< BEGV_BYTE
|| pos_byte
>= ZV_BYTE
)
1193 CHECK_NUMBER_COERCE_MARKER (pos
);
1194 if (XINT (pos
) < BEGV
|| XINT (pos
) >= ZV
)
1197 pos_byte
= CHAR_TO_BYTE (XINT (pos
));
1200 return make_number (FETCH_CHAR (pos_byte
));
1203 DEFUN ("char-before", Fchar_before
, Schar_before
, 0, 1, 0,
1204 doc
: /* Return character in current buffer preceding position POS.
1205 POS is an integer or a marker and defaults to point.
1206 If POS is out of range, the value is nil. */)
1209 register Lisp_Object val
;
1210 register EMACS_INT pos_byte
;
1215 XSETFASTINT (pos
, PT
);
1220 pos_byte
= marker_byte_position (pos
);
1222 if (pos_byte
<= BEGV_BYTE
|| pos_byte
> ZV_BYTE
)
1227 CHECK_NUMBER_COERCE_MARKER (pos
);
1229 if (XINT (pos
) <= BEGV
|| XINT (pos
) > ZV
)
1232 pos_byte
= CHAR_TO_BYTE (XINT (pos
));
1235 if (!NILP (current_buffer
->enable_multibyte_characters
))
1238 XSETFASTINT (val
, FETCH_CHAR (pos_byte
));
1243 XSETFASTINT (val
, FETCH_BYTE (pos_byte
));
1248 DEFUN ("user-login-name", Fuser_login_name
, Suser_login_name
, 0, 1, 0,
1249 doc
: /* Return the name under which the user logged in, as a string.
1250 This is based on the effective uid, not the real uid.
1251 Also, if the environment variables LOGNAME or USER are set,
1252 that determines the value of this function.
1254 If optional argument UID is an integer or a float, return the login name
1255 of the user with that uid, or nil if there is no such user. */)
1261 /* Set up the user name info if we didn't do it before.
1262 (That can happen if Emacs is dumpable
1263 but you decide to run `temacs -l loadup' and not dump. */
1264 if (INTEGERP (Vuser_login_name
))
1268 return Vuser_login_name
;
1270 id
= (uid_t
)XFLOATINT (uid
);
1272 pw
= (struct passwd
*) getpwuid (id
);
1274 return (pw
? build_string (pw
->pw_name
) : Qnil
);
1277 DEFUN ("user-real-login-name", Fuser_real_login_name
, Suser_real_login_name
,
1279 doc
: /* Return the name of the user's real uid, as a string.
1280 This ignores the environment variables LOGNAME and USER, so it differs from
1281 `user-login-name' when running under `su'. */)
1284 /* Set up the user name info if we didn't do it before.
1285 (That can happen if Emacs is dumpable
1286 but you decide to run `temacs -l loadup' and not dump. */
1287 if (INTEGERP (Vuser_login_name
))
1289 return Vuser_real_login_name
;
1292 DEFUN ("user-uid", Fuser_uid
, Suser_uid
, 0, 0, 0,
1293 doc
: /* Return the effective uid of Emacs.
1294 Value is an integer or a float, depending on the value. */)
1297 /* Assignment to EMACS_INT stops GCC whining about limited range of
1299 EMACS_INT euid
= geteuid ();
1301 /* Make sure we don't produce a negative UID due to signed integer
1304 return make_float ((double)geteuid ());
1305 return make_fixnum_or_float (euid
);
1308 DEFUN ("user-real-uid", Fuser_real_uid
, Suser_real_uid
, 0, 0, 0,
1309 doc
: /* Return the real uid of Emacs.
1310 Value is an integer or a float, depending on the value. */)
1313 /* Assignment to EMACS_INT stops GCC whining about limited range of
1315 EMACS_INT uid
= getuid ();
1317 /* Make sure we don't produce a negative UID due to signed integer
1320 return make_float ((double)getuid ());
1321 return make_fixnum_or_float (uid
);
1324 DEFUN ("user-full-name", Fuser_full_name
, Suser_full_name
, 0, 1, 0,
1325 doc
: /* Return the full name of the user logged in, as a string.
1326 If the full name corresponding to Emacs's userid is not known,
1329 If optional argument UID is an integer or float, return the full name
1330 of the user with that uid, or nil if there is no such user.
1331 If UID is a string, return the full name of the user with that login
1332 name, or nil if there is no such user. */)
1336 register unsigned char *p
, *q
;
1340 return Vuser_full_name
;
1341 else if (NUMBERP (uid
))
1344 pw
= (struct passwd
*) getpwuid ((uid_t
) XFLOATINT (uid
));
1347 else if (STRINGP (uid
))
1350 pw
= (struct passwd
*) getpwnam (SDATA (uid
));
1354 error ("Invalid UID specification");
1359 p
= (unsigned char *) USER_FULL_NAME
;
1360 /* Chop off everything after the first comma. */
1361 q
= (unsigned char *) strchr (p
, ',');
1362 full
= make_string (p
, q
? q
- p
: strlen (p
));
1364 #ifdef AMPERSAND_FULL_NAME
1366 q
= (unsigned char *) strchr (p
, '&');
1367 /* Substitute the login name for the &, upcasing the first character. */
1370 register unsigned char *r
;
1373 login
= Fuser_login_name (make_number (pw
->pw_uid
));
1374 r
= (unsigned char *) alloca (strlen (p
) + SCHARS (login
) + 1);
1375 memcpy (r
, p
, q
- p
);
1377 strcat (r
, SDATA (login
));
1378 r
[q
- p
] = UPCASE (r
[q
- p
]);
1380 full
= build_string (r
);
1382 #endif /* AMPERSAND_FULL_NAME */
1387 DEFUN ("system-name", Fsystem_name
, Ssystem_name
, 0, 0, 0,
1388 doc
: /* Return the host name of the machine you are running on, as a string. */)
1391 return Vsystem_name
;
1394 /* For the benefit of callers who don't want to include lisp.h */
1397 get_system_name (void)
1399 if (STRINGP (Vsystem_name
))
1400 return SSDATA (Vsystem_name
);
1406 get_operating_system_release (void)
1408 if (STRINGP (Voperating_system_release
))
1409 return SSDATA (Voperating_system_release
);
1414 DEFUN ("emacs-pid", Femacs_pid
, Semacs_pid
, 0, 0, 0,
1415 doc
: /* Return the process ID of Emacs, as an integer. */)
1418 return make_number (getpid ());
1421 DEFUN ("current-time", Fcurrent_time
, Scurrent_time
, 0, 0, 0,
1422 doc
: /* Return the current time, as the number of seconds since 1970-01-01 00:00:00.
1423 The time is returned as a list of three integers. The first has the
1424 most significant 16 bits of the seconds, while the second has the
1425 least significant 16 bits. The third integer gives the microsecond
1428 The microsecond count is zero on systems that do not provide
1429 resolution finer than a second. */)
1435 return list3 (make_number ((EMACS_SECS (t
) >> 16) & 0xffff),
1436 make_number ((EMACS_SECS (t
) >> 0) & 0xffff),
1437 make_number (EMACS_USECS (t
)));
1440 DEFUN ("get-internal-run-time", Fget_internal_run_time
, Sget_internal_run_time
,
1442 doc
: /* Return the current run time used by Emacs.
1443 The time is returned as a list of three integers. The first has the
1444 most significant 16 bits of the seconds, while the second has the
1445 least significant 16 bits. The third integer gives the microsecond
1448 On systems that can't determine the run time, `get-internal-run-time'
1449 does the same thing as `current-time'. The microsecond count is zero
1450 on systems that do not provide resolution finer than a second. */)
1453 #ifdef HAVE_GETRUSAGE
1454 struct rusage usage
;
1457 if (getrusage (RUSAGE_SELF
, &usage
) < 0)
1458 /* This shouldn't happen. What action is appropriate? */
1461 /* Sum up user time and system time. */
1462 secs
= usage
.ru_utime
.tv_sec
+ usage
.ru_stime
.tv_sec
;
1463 usecs
= usage
.ru_utime
.tv_usec
+ usage
.ru_stime
.tv_usec
;
1464 if (usecs
>= 1000000)
1470 return list3 (make_number ((secs
>> 16) & 0xffff),
1471 make_number ((secs
>> 0) & 0xffff),
1472 make_number (usecs
));
1473 #else /* ! HAVE_GETRUSAGE */
1475 return w32_get_internal_run_time ();
1476 #else /* ! WINDOWSNT */
1477 return Fcurrent_time ();
1478 #endif /* WINDOWSNT */
1479 #endif /* HAVE_GETRUSAGE */
1484 lisp_time_argument (Lisp_Object specified_time
, time_t *result
, int *usec
)
1486 if (NILP (specified_time
))
1493 *usec
= EMACS_USECS (t
);
1494 *result
= EMACS_SECS (t
);
1498 return time (result
) != -1;
1502 Lisp_Object high
, low
;
1503 high
= Fcar (specified_time
);
1504 CHECK_NUMBER (high
);
1505 low
= Fcdr (specified_time
);
1510 Lisp_Object usec_l
= Fcdr (low
);
1512 usec_l
= Fcar (usec_l
);
1517 CHECK_NUMBER (usec_l
);
1518 *usec
= XINT (usec_l
);
1526 *result
= (XINT (high
) << 16) + (XINT (low
) & 0xffff);
1527 return *result
>> 16 == XINT (high
);
1531 DEFUN ("float-time", Ffloat_time
, Sfloat_time
, 0, 1, 0,
1532 doc
: /* Return the current time, as a float number of seconds since the epoch.
1533 If SPECIFIED-TIME is given, it is the time to convert to float
1534 instead of the current time. The argument should have the form
1535 (HIGH LOW) or (HIGH LOW USEC). Thus, you can use times obtained from
1536 `current-time' and from `file-attributes'. SPECIFIED-TIME can also
1537 have the form (HIGH . LOW), but this is considered obsolete.
1539 WARNING: Since the result is floating point, it may not be exact.
1540 If precise time stamps are required, use either `current-time',
1541 or (if you need time as a string) `format-time-string'. */)
1542 (Lisp_Object specified_time
)
1547 if (! lisp_time_argument (specified_time
, &sec
, &usec
))
1548 error ("Invalid time specification");
1550 return make_float ((sec
* 1e6
+ usec
) / 1e6
);
1553 /* Write information into buffer S of size MAXSIZE, according to the
1554 FORMAT of length FORMAT_LEN, using time information taken from *TP.
1555 Default to Universal Time if UT is nonzero, local time otherwise.
1556 Return the number of bytes written, not including the terminating
1557 '\0'. If S is NULL, nothing will be written anywhere; so to
1558 determine how many bytes would be written, use NULL for S and
1559 ((size_t) -1) for MAXSIZE.
1561 This function behaves like emacs_strftimeu, except it allows null
1564 emacs_memftimeu (char *s
, size_t maxsize
, const char *format
, size_t format_len
, const struct tm
*tp
, int ut
)
1568 /* Loop through all the null-terminated strings in the format
1569 argument. Normally there's just one null-terminated string, but
1570 there can be arbitrarily many, concatenated together, if the
1571 format contains '\0' bytes. emacs_strftimeu stops at the first
1572 '\0' byte so we must invoke it separately for each such string. */
1581 result
= emacs_strftimeu (s
, maxsize
, format
, tp
, ut
);
1585 if (result
== 0 && s
[0] != '\0')
1590 maxsize
-= result
+ 1;
1592 len
= strlen (format
);
1593 if (len
== format_len
)
1597 format_len
-= len
+ 1;
1601 DEFUN ("format-time-string", Fformat_time_string
, Sformat_time_string
, 1, 3, 0,
1602 doc
: /* Use FORMAT-STRING to format the time TIME, or now if omitted.
1603 TIME is specified as (HIGH LOW . IGNORED), as returned by
1604 `current-time' or `file-attributes'. The obsolete form (HIGH . LOW)
1605 is also still accepted.
1606 The third, optional, argument UNIVERSAL, if non-nil, means describe TIME
1607 as Universal Time; nil means describe TIME in the local time zone.
1608 The value is a copy of FORMAT-STRING, but with certain constructs replaced
1609 by text that describes the specified date and time in TIME:
1611 %Y is the year, %y within the century, %C the century.
1612 %G is the year corresponding to the ISO week, %g within the century.
1613 %m is the numeric month.
1614 %b and %h are the locale's abbreviated month name, %B the full name.
1615 %d is the day of the month, zero-padded, %e is blank-padded.
1616 %u is the numeric day of week from 1 (Monday) to 7, %w from 0 (Sunday) to 6.
1617 %a is the locale's abbreviated name of the day of week, %A the full name.
1618 %U is the week number starting on Sunday, %W starting on Monday,
1619 %V according to ISO 8601.
1620 %j is the day of the year.
1622 %H is the hour on a 24-hour clock, %I is on a 12-hour clock, %k is like %H
1623 only blank-padded, %l is like %I blank-padded.
1624 %p is the locale's equivalent of either AM or PM.
1627 %Z is the time zone name, %z is the numeric form.
1628 %s is the number of seconds since 1970-01-01 00:00:00 +0000.
1630 %c is the locale's date and time format.
1631 %x is the locale's "preferred" date format.
1632 %D is like "%m/%d/%y".
1634 %R is like "%H:%M", %T is like "%H:%M:%S", %r is like "%I:%M:%S %p".
1635 %X is the locale's "preferred" time format.
1637 Finally, %n is a newline, %t is a tab, %% is a literal %.
1639 Certain flags and modifiers are available with some format controls.
1640 The flags are `_', `-', `^' and `#'. For certain characters X,
1641 %_X is like %X, but padded with blanks; %-X is like %X,
1642 but without padding. %^X is like %X, but with all textual
1643 characters up-cased; %#X is like %X, but with letter-case of
1644 all textual characters reversed.
1645 %NX (where N stands for an integer) is like %X,
1646 but takes up at least N (a number) positions.
1647 The modifiers are `E' and `O'. For certain characters X,
1648 %EX is a locale's alternative version of %X;
1649 %OX is like %X, but uses the locale's number symbols.
1651 For example, to produce full ISO 8601 format, use "%Y-%m-%dT%T%z". */)
1652 (Lisp_Object format_string
, Lisp_Object time
, Lisp_Object universal
)
1657 int ut
= ! NILP (universal
);
1659 CHECK_STRING (format_string
);
1661 if (! lisp_time_argument (time
, &value
, NULL
))
1662 error ("Invalid time specification");
1664 format_string
= code_convert_string_norecord (format_string
,
1665 Vlocale_coding_system
, 1);
1667 /* This is probably enough. */
1668 size
= SBYTES (format_string
) * 6 + 50;
1671 tm
= ut
? gmtime (&value
) : localtime (&value
);
1674 error ("Specified time is not representable");
1676 synchronize_system_time_locale ();
1680 char *buf
= (char *) alloca (size
+ 1);
1685 result
= emacs_memftimeu (buf
, size
, SDATA (format_string
),
1686 SBYTES (format_string
),
1689 if ((result
> 0 && result
< size
) || (result
== 0 && buf
[0] == '\0'))
1690 return code_convert_string_norecord (make_unibyte_string (buf
, result
),
1691 Vlocale_coding_system
, 0);
1693 /* If buffer was too small, make it bigger and try again. */
1695 result
= emacs_memftimeu (NULL
, (size_t) -1,
1696 SDATA (format_string
),
1697 SBYTES (format_string
),
1704 DEFUN ("decode-time", Fdecode_time
, Sdecode_time
, 0, 1, 0,
1705 doc
: /* Decode a time value as (SEC MINUTE HOUR DAY MONTH YEAR DOW DST ZONE).
1706 The optional SPECIFIED-TIME should be a list of (HIGH LOW . IGNORED),
1707 as from `current-time' and `file-attributes', or nil to use the
1708 current time. The obsolete form (HIGH . LOW) is also still accepted.
1709 The list has the following nine members: SEC is an integer between 0
1710 and 60; SEC is 60 for a leap second, which only some operating systems
1711 support. MINUTE is an integer between 0 and 59. HOUR is an integer
1712 between 0 and 23. DAY is an integer between 1 and 31. MONTH is an
1713 integer between 1 and 12. YEAR is an integer indicating the
1714 four-digit year. DOW is the day of week, an integer between 0 and 6,
1715 where 0 is Sunday. DST is t if daylight saving time is in effect,
1716 otherwise nil. ZONE is an integer indicating the number of seconds
1717 east of Greenwich. (Note that Common Lisp has different meanings for
1719 (Lisp_Object specified_time
)
1723 struct tm
*decoded_time
;
1724 Lisp_Object list_args
[9];
1726 if (! lisp_time_argument (specified_time
, &time_spec
, NULL
))
1727 error ("Invalid time specification");
1730 decoded_time
= localtime (&time_spec
);
1733 error ("Specified time is not representable");
1734 XSETFASTINT (list_args
[0], decoded_time
->tm_sec
);
1735 XSETFASTINT (list_args
[1], decoded_time
->tm_min
);
1736 XSETFASTINT (list_args
[2], decoded_time
->tm_hour
);
1737 XSETFASTINT (list_args
[3], decoded_time
->tm_mday
);
1738 XSETFASTINT (list_args
[4], decoded_time
->tm_mon
+ 1);
1739 /* On 64-bit machines an int is narrower than EMACS_INT, thus the
1740 cast below avoids overflow in int arithmetics. */
1741 XSETINT (list_args
[5], TM_YEAR_BASE
+ (EMACS_INT
) decoded_time
->tm_year
);
1742 XSETFASTINT (list_args
[6], decoded_time
->tm_wday
);
1743 list_args
[7] = (decoded_time
->tm_isdst
)? Qt
: Qnil
;
1745 /* Make a copy, in case gmtime modifies the struct. */
1746 save_tm
= *decoded_time
;
1748 decoded_time
= gmtime (&time_spec
);
1750 if (decoded_time
== 0)
1751 list_args
[8] = Qnil
;
1753 XSETINT (list_args
[8], tm_diff (&save_tm
, decoded_time
));
1754 return Flist (9, list_args
);
1757 DEFUN ("encode-time", Fencode_time
, Sencode_time
, 6, MANY
, 0,
1758 doc
: /* Convert SECOND, MINUTE, HOUR, DAY, MONTH, YEAR and ZONE to internal time.
1759 This is the reverse operation of `decode-time', which see.
1760 ZONE defaults to the current time zone rule. This can
1761 be a string or t (as from `set-time-zone-rule'), or it can be a list
1762 \(as from `current-time-zone') or an integer (as from `decode-time')
1763 applied without consideration for daylight saving time.
1765 You can pass more than 7 arguments; then the first six arguments
1766 are used as SECOND through YEAR, and the *last* argument is used as ZONE.
1767 The intervening arguments are ignored.
1768 This feature lets (apply 'encode-time (decode-time ...)) work.
1770 Out-of-range values for SECOND, MINUTE, HOUR, DAY, or MONTH are allowed;
1771 for example, a DAY of 0 means the day preceding the given month.
1772 Year numbers less than 100 are treated just like other year numbers.
1773 If you want them to stand for years in this century, you must do that yourself.
1775 Years before 1970 are not guaranteed to work. On some systems,
1776 year values as low as 1901 do work.
1778 usage: (encode-time SECOND MINUTE HOUR DAY MONTH YEAR &optional ZONE) */)
1779 (int nargs
, register Lisp_Object
*args
)
1783 Lisp_Object zone
= (nargs
> 6 ? args
[nargs
- 1] : Qnil
);
1785 CHECK_NUMBER (args
[0]); /* second */
1786 CHECK_NUMBER (args
[1]); /* minute */
1787 CHECK_NUMBER (args
[2]); /* hour */
1788 CHECK_NUMBER (args
[3]); /* day */
1789 CHECK_NUMBER (args
[4]); /* month */
1790 CHECK_NUMBER (args
[5]); /* year */
1792 tm
.tm_sec
= XINT (args
[0]);
1793 tm
.tm_min
= XINT (args
[1]);
1794 tm
.tm_hour
= XINT (args
[2]);
1795 tm
.tm_mday
= XINT (args
[3]);
1796 tm
.tm_mon
= XINT (args
[4]) - 1;
1797 tm
.tm_year
= XINT (args
[5]) - TM_YEAR_BASE
;
1805 time
= mktime (&tm
);
1811 const char *tzstring
;
1812 char **oldenv
= environ
, **newenv
;
1816 else if (STRINGP (zone
))
1817 tzstring
= SSDATA (zone
);
1818 else if (INTEGERP (zone
))
1820 int abszone
= eabs (XINT (zone
));
1821 sprintf (tzbuf
, "XXX%s%d:%02d:%02d", "-" + (XINT (zone
) < 0),
1822 abszone
/ (60*60), (abszone
/60) % 60, abszone
% 60);
1826 error ("Invalid time zone specification");
1828 /* Set TZ before calling mktime; merely adjusting mktime's returned
1829 value doesn't suffice, since that would mishandle leap seconds. */
1830 set_time_zone_rule (tzstring
);
1833 time
= mktime (&tm
);
1836 /* Restore TZ to previous value. */
1840 #ifdef LOCALTIME_CACHE
1845 if (time
== (time_t) -1)
1846 error ("Specified time is not representable");
1848 return make_time (time
);
1851 DEFUN ("current-time-string", Fcurrent_time_string
, Scurrent_time_string
, 0, 1, 0,
1852 doc
: /* Return the current local time, as a human-readable string.
1853 Programs can use this function to decode a time,
1854 since the number of columns in each field is fixed
1855 if the year is in the range 1000-9999.
1856 The format is `Sun Sep 16 01:03:52 1973'.
1857 However, see also the functions `decode-time' and `format-time-string'
1858 which provide a much more powerful and general facility.
1860 If SPECIFIED-TIME is given, it is a time to format instead of the
1861 current time. The argument should have the form (HIGH LOW . IGNORED).
1862 Thus, you can use times obtained from `current-time' and from
1863 `file-attributes'. SPECIFIED-TIME can also have the form (HIGH . LOW),
1864 but this is considered obsolete. */)
1865 (Lisp_Object specified_time
)
1871 if (! lisp_time_argument (specified_time
, &value
, NULL
))
1872 error ("Invalid time specification");
1874 /* Convert to a string, checking for out-of-range time stamps.
1875 Don't use 'ctime', as that might dump core if VALUE is out of
1878 tm
= localtime (&value
);
1880 if (! (tm
&& TM_YEAR_IN_ASCTIME_RANGE (tm
->tm_year
) && (tem
= asctime (tm
))))
1881 error ("Specified time is not representable");
1883 /* Remove the trailing newline. */
1884 tem
[strlen (tem
) - 1] = '\0';
1886 return build_string (tem
);
1889 /* Yield A - B, measured in seconds.
1890 This function is copied from the GNU C Library. */
1892 tm_diff (struct tm
*a
, struct tm
*b
)
1894 /* Compute intervening leap days correctly even if year is negative.
1895 Take care to avoid int overflow in leap day calculations,
1896 but it's OK to assume that A and B are close to each other. */
1897 int a4
= (a
->tm_year
>> 2) + (TM_YEAR_BASE
>> 2) - ! (a
->tm_year
& 3);
1898 int b4
= (b
->tm_year
>> 2) + (TM_YEAR_BASE
>> 2) - ! (b
->tm_year
& 3);
1899 int a100
= a4
/ 25 - (a4
% 25 < 0);
1900 int b100
= b4
/ 25 - (b4
% 25 < 0);
1901 int a400
= a100
>> 2;
1902 int b400
= b100
>> 2;
1903 int intervening_leap_days
= (a4
- b4
) - (a100
- b100
) + (a400
- b400
);
1904 int years
= a
->tm_year
- b
->tm_year
;
1905 int days
= (365 * years
+ intervening_leap_days
1906 + (a
->tm_yday
- b
->tm_yday
));
1907 return (60 * (60 * (24 * days
+ (a
->tm_hour
- b
->tm_hour
))
1908 + (a
->tm_min
- b
->tm_min
))
1909 + (a
->tm_sec
- b
->tm_sec
));
1912 DEFUN ("current-time-zone", Fcurrent_time_zone
, Scurrent_time_zone
, 0, 1, 0,
1913 doc
: /* Return the offset and name for the local time zone.
1914 This returns a list of the form (OFFSET NAME).
1915 OFFSET is an integer number of seconds ahead of UTC (east of Greenwich).
1916 A negative value means west of Greenwich.
1917 NAME is a string giving the name of the time zone.
1918 If SPECIFIED-TIME is given, the time zone offset is determined from it
1919 instead of using the current time. The argument should have the form
1920 (HIGH LOW . IGNORED). Thus, you can use times obtained from
1921 `current-time' and from `file-attributes'. SPECIFIED-TIME can also
1922 have the form (HIGH . LOW), but this is considered obsolete.
1924 Some operating systems cannot provide all this information to Emacs;
1925 in this case, `current-time-zone' returns a list containing nil for
1926 the data it can't find. */)
1927 (Lisp_Object specified_time
)
1933 if (!lisp_time_argument (specified_time
, &value
, NULL
))
1938 t
= gmtime (&value
);
1942 t
= localtime (&value
);
1949 int offset
= tm_diff (t
, &gmt
);
1955 s
= (char *)t
->tm_zone
;
1956 #else /* not HAVE_TM_ZONE */
1958 if (t
->tm_isdst
== 0 || t
->tm_isdst
== 1)
1959 s
= tzname
[t
->tm_isdst
];
1961 #endif /* not HAVE_TM_ZONE */
1965 /* No local time zone name is available; use "+-NNNN" instead. */
1966 int am
= (offset
< 0 ? -offset
: offset
) / 60;
1967 sprintf (buf
, "%c%02d%02d", (offset
< 0 ? '-' : '+'), am
/60, am
%60);
1971 return Fcons (make_number (offset
), Fcons (build_string (s
), Qnil
));
1974 return Fmake_list (make_number (2), Qnil
);
1977 /* This holds the value of `environ' produced by the previous
1978 call to Fset_time_zone_rule, or 0 if Fset_time_zone_rule
1979 has never been called. */
1980 static char **environbuf
;
1982 /* This holds the startup value of the TZ environment variable so it
1983 can be restored if the user calls set-time-zone-rule with a nil
1985 static char *initial_tz
;
1987 DEFUN ("set-time-zone-rule", Fset_time_zone_rule
, Sset_time_zone_rule
, 1, 1, 0,
1988 doc
: /* Set the local time zone using TZ, a string specifying a time zone rule.
1989 If TZ is nil, use implementation-defined default time zone information.
1990 If TZ is t, use Universal Time. */)
1993 const char *tzstring
;
1995 /* When called for the first time, save the original TZ. */
1997 initial_tz
= (char *) getenv ("TZ");
2000 tzstring
= initial_tz
;
2001 else if (EQ (tz
, Qt
))
2006 tzstring
= SSDATA (tz
);
2009 set_time_zone_rule (tzstring
);
2011 environbuf
= environ
;
2016 #ifdef LOCALTIME_CACHE
2018 /* These two values are known to load tz files in buggy implementations,
2019 i.e. Solaris 1 executables running under either Solaris 1 or Solaris 2.
2020 Their values shouldn't matter in non-buggy implementations.
2021 We don't use string literals for these strings,
2022 since if a string in the environment is in readonly
2023 storage, it runs afoul of bugs in SVR4 and Solaris 2.3.
2024 See Sun bugs 1113095 and 1114114, ``Timezone routines
2025 improperly modify environment''. */
2027 static char set_time_zone_rule_tz1
[] = "TZ=GMT+0";
2028 static char set_time_zone_rule_tz2
[] = "TZ=GMT+1";
2032 /* Set the local time zone rule to TZSTRING.
2033 This allocates memory into `environ', which it is the caller's
2034 responsibility to free. */
2037 set_time_zone_rule (const char *tzstring
)
2040 char **from
, **to
, **newenv
;
2042 /* Make the ENVIRON vector longer with room for TZSTRING. */
2043 for (from
= environ
; *from
; from
++)
2045 envptrs
= from
- environ
+ 2;
2046 newenv
= to
= (char **) xmalloc (envptrs
* sizeof (char *)
2047 + (tzstring
? strlen (tzstring
) + 4 : 0));
2049 /* Add TZSTRING to the end of environ, as a value for TZ. */
2052 char *t
= (char *) (to
+ envptrs
);
2054 strcat (t
, tzstring
);
2058 /* Copy the old environ vector elements into NEWENV,
2059 but don't copy the TZ variable.
2060 So we have only one definition of TZ, which came from TZSTRING. */
2061 for (from
= environ
; *from
; from
++)
2062 if (strncmp (*from
, "TZ=", 3) != 0)
2068 /* If we do have a TZSTRING, NEWENV points to the vector slot where
2069 the TZ variable is stored. If we do not have a TZSTRING,
2070 TO points to the vector slot which has the terminating null. */
2072 #ifdef LOCALTIME_CACHE
2074 /* In SunOS 4.1.3_U1 and 4.1.4, if TZ has a value like
2075 "US/Pacific" that loads a tz file, then changes to a value like
2076 "XXX0" that does not load a tz file, and then changes back to
2077 its original value, the last change is (incorrectly) ignored.
2078 Also, if TZ changes twice in succession to values that do
2079 not load a tz file, tzset can dump core (see Sun bug#1225179).
2080 The following code works around these bugs. */
2084 /* Temporarily set TZ to a value that loads a tz file
2085 and that differs from tzstring. */
2087 *newenv
= (strcmp (tzstring
, set_time_zone_rule_tz1
+ 3) == 0
2088 ? set_time_zone_rule_tz2
: set_time_zone_rule_tz1
);
2094 /* The implied tzstring is unknown, so temporarily set TZ to
2095 two different values that each load a tz file. */
2096 *to
= set_time_zone_rule_tz1
;
2099 *to
= set_time_zone_rule_tz2
;
2104 /* Now TZ has the desired value, and tzset can be invoked safely. */
2111 /* Insert NARGS Lisp objects in the array ARGS by calling INSERT_FUNC
2112 (if a type of object is Lisp_Int) or INSERT_FROM_STRING_FUNC (if a
2113 type of object is Lisp_String). INHERIT is passed to
2114 INSERT_FROM_STRING_FUNC as the last argument. */
2117 general_insert_function (void (*insert_func
)
2118 (const unsigned char *, EMACS_INT
),
2119 void (*insert_from_string_func
)
2120 (Lisp_Object
, EMACS_INT
, EMACS_INT
,
2121 EMACS_INT
, EMACS_INT
, int),
2122 int inherit
, int nargs
, Lisp_Object
*args
)
2124 register int argnum
;
2125 register Lisp_Object val
;
2127 for (argnum
= 0; argnum
< nargs
; argnum
++)
2130 if (CHARACTERP (val
))
2132 unsigned char str
[MAX_MULTIBYTE_LENGTH
];
2135 if (!NILP (current_buffer
->enable_multibyte_characters
))
2136 len
= CHAR_STRING (XFASTINT (val
), str
);
2139 str
[0] = (ASCII_CHAR_P (XINT (val
))
2141 : multibyte_char_to_unibyte (XINT (val
), Qnil
));
2144 (*insert_func
) (str
, len
);
2146 else if (STRINGP (val
))
2148 (*insert_from_string_func
) (val
, 0, 0,
2154 wrong_type_argument (Qchar_or_string_p
, val
);
2159 insert1 (Lisp_Object arg
)
2165 /* Callers passing one argument to Finsert need not gcpro the
2166 argument "array", since the only element of the array will
2167 not be used after calling insert or insert_from_string, so
2168 we don't care if it gets trashed. */
2170 DEFUN ("insert", Finsert
, Sinsert
, 0, MANY
, 0,
2171 doc
: /* Insert the arguments, either strings or characters, at point.
2172 Point and before-insertion markers move forward to end up
2173 after the inserted text.
2174 Any other markers at the point of insertion remain before the text.
2176 If the current buffer is multibyte, unibyte strings are converted
2177 to multibyte for insertion (see `string-make-multibyte').
2178 If the current buffer is unibyte, multibyte strings are converted
2179 to unibyte for insertion (see `string-make-unibyte').
2181 When operating on binary data, it may be necessary to preserve the
2182 original bytes of a unibyte string when inserting it into a multibyte
2183 buffer; to accomplish this, apply `string-as-multibyte' to the string
2184 and insert the result.
2186 usage: (insert &rest ARGS) */)
2187 (int nargs
, register Lisp_Object
*args
)
2189 general_insert_function (insert
, insert_from_string
, 0, nargs
, args
);
2193 DEFUN ("insert-and-inherit", Finsert_and_inherit
, Sinsert_and_inherit
,
2195 doc
: /* Insert the arguments at point, inheriting properties from adjoining text.
2196 Point and before-insertion markers move forward to end up
2197 after the inserted text.
2198 Any other markers at the point of insertion remain before the text.
2200 If the current buffer is multibyte, unibyte strings are converted
2201 to multibyte for insertion (see `unibyte-char-to-multibyte').
2202 If the current buffer is unibyte, multibyte strings are converted
2203 to unibyte for insertion.
2205 usage: (insert-and-inherit &rest ARGS) */)
2206 (int nargs
, register Lisp_Object
*args
)
2208 general_insert_function (insert_and_inherit
, insert_from_string
, 1,
2213 DEFUN ("insert-before-markers", Finsert_before_markers
, Sinsert_before_markers
, 0, MANY
, 0,
2214 doc
: /* Insert strings or characters at point, relocating markers after the text.
2215 Point and markers move forward to end up after the inserted text.
2217 If the current buffer is multibyte, unibyte strings are converted
2218 to multibyte for insertion (see `unibyte-char-to-multibyte').
2219 If the current buffer is unibyte, multibyte strings are converted
2220 to unibyte for insertion.
2222 usage: (insert-before-markers &rest ARGS) */)
2223 (int nargs
, register Lisp_Object
*args
)
2225 general_insert_function (insert_before_markers
,
2226 insert_from_string_before_markers
, 0,
2231 DEFUN ("insert-before-markers-and-inherit", Finsert_and_inherit_before_markers
,
2232 Sinsert_and_inherit_before_markers
, 0, MANY
, 0,
2233 doc
: /* Insert text at point, relocating markers and inheriting properties.
2234 Point and markers move forward to end up after the inserted text.
2236 If the current buffer is multibyte, unibyte strings are converted
2237 to multibyte for insertion (see `unibyte-char-to-multibyte').
2238 If the current buffer is unibyte, multibyte strings are converted
2239 to unibyte for insertion.
2241 usage: (insert-before-markers-and-inherit &rest ARGS) */)
2242 (int nargs
, register Lisp_Object
*args
)
2244 general_insert_function (insert_before_markers_and_inherit
,
2245 insert_from_string_before_markers
, 1,
2250 DEFUN ("insert-char", Finsert_char
, Sinsert_char
, 2, 3, 0,
2251 doc
: /* Insert COUNT copies of CHARACTER.
2252 Point, and before-insertion markers, are relocated as in the function `insert'.
2253 The optional third arg INHERIT, if non-nil, says to inherit text properties
2254 from adjoining text, if those properties are sticky. */)
2255 (Lisp_Object character
, Lisp_Object count
, Lisp_Object inherit
)
2257 register unsigned char *string
;
2258 register EMACS_INT strlen
;
2260 register EMACS_INT n
;
2262 unsigned char str
[MAX_MULTIBYTE_LENGTH
];
2264 CHECK_NUMBER (character
);
2265 CHECK_NUMBER (count
);
2267 if (!NILP (current_buffer
->enable_multibyte_characters
))
2268 len
= CHAR_STRING (XFASTINT (character
), str
);
2270 str
[0] = XFASTINT (character
), len
= 1;
2271 if (MOST_POSITIVE_FIXNUM
/ len
< XINT (count
))
2272 error ("Maximum buffer size would be exceeded");
2273 n
= XINT (count
) * len
;
2276 strlen
= min (n
, 256 * len
);
2277 string
= (unsigned char *) alloca (strlen
);
2278 for (i
= 0; i
< strlen
; i
++)
2279 string
[i
] = str
[i
% len
];
2283 if (!NILP (inherit
))
2284 insert_and_inherit (string
, strlen
);
2286 insert (string
, strlen
);
2291 if (!NILP (inherit
))
2292 insert_and_inherit (string
, n
);
2299 DEFUN ("insert-byte", Finsert_byte
, Sinsert_byte
, 2, 3, 0,
2300 doc
: /* Insert COUNT (second arg) copies of BYTE (first arg).
2301 Both arguments are required.
2302 BYTE is a number of the range 0..255.
2304 If BYTE is 128..255 and the current buffer is multibyte, the
2305 corresponding eight-bit character is inserted.
2307 Point, and before-insertion markers, are relocated as in the function `insert'.
2308 The optional third arg INHERIT, if non-nil, says to inherit text properties
2309 from adjoining text, if those properties are sticky. */)
2310 (Lisp_Object byte
, Lisp_Object count
, Lisp_Object inherit
)
2312 CHECK_NUMBER (byte
);
2313 if (XINT (byte
) < 0 || XINT (byte
) > 255)
2314 args_out_of_range_3 (byte
, make_number (0), make_number (255));
2315 if (XINT (byte
) >= 128
2316 && ! NILP (current_buffer
->enable_multibyte_characters
))
2317 XSETFASTINT (byte
, BYTE8_TO_CHAR (XINT (byte
)));
2318 return Finsert_char (byte
, count
, inherit
);
2322 /* Making strings from buffer contents. */
2324 /* Return a Lisp_String containing the text of the current buffer from
2325 START to END. If text properties are in use and the current buffer
2326 has properties in the range specified, the resulting string will also
2327 have them, if PROPS is nonzero.
2329 We don't want to use plain old make_string here, because it calls
2330 make_uninit_string, which can cause the buffer arena to be
2331 compacted. make_string has no way of knowing that the data has
2332 been moved, and thus copies the wrong data into the string. This
2333 doesn't effect most of the other users of make_string, so it should
2334 be left as is. But we should use this function when conjuring
2335 buffer substrings. */
2338 make_buffer_string (EMACS_INT start
, EMACS_INT end
, int props
)
2340 EMACS_INT start_byte
= CHAR_TO_BYTE (start
);
2341 EMACS_INT end_byte
= CHAR_TO_BYTE (end
);
2343 return make_buffer_string_both (start
, start_byte
, end
, end_byte
, props
);
2346 /* Return a Lisp_String containing the text of the current buffer from
2347 START / START_BYTE to END / END_BYTE.
2349 If text properties are in use and the current buffer
2350 has properties in the range specified, the resulting string will also
2351 have them, if PROPS is nonzero.
2353 We don't want to use plain old make_string here, because it calls
2354 make_uninit_string, which can cause the buffer arena to be
2355 compacted. make_string has no way of knowing that the data has
2356 been moved, and thus copies the wrong data into the string. This
2357 doesn't effect most of the other users of make_string, so it should
2358 be left as is. But we should use this function when conjuring
2359 buffer substrings. */
2362 make_buffer_string_both (EMACS_INT start
, EMACS_INT start_byte
,
2363 EMACS_INT end
, EMACS_INT end_byte
, int props
)
2365 Lisp_Object result
, tem
, tem1
;
2367 if (start
< GPT
&& GPT
< end
)
2370 if (! NILP (current_buffer
->enable_multibyte_characters
))
2371 result
= make_uninit_multibyte_string (end
- start
, end_byte
- start_byte
);
2373 result
= make_uninit_string (end
- start
);
2374 memcpy (SDATA (result
), BYTE_POS_ADDR (start_byte
), end_byte
- start_byte
);
2376 /* If desired, update and copy the text properties. */
2379 update_buffer_properties (start
, end
);
2381 tem
= Fnext_property_change (make_number (start
), Qnil
, make_number (end
));
2382 tem1
= Ftext_properties_at (make_number (start
), Qnil
);
2384 if (XINT (tem
) != end
|| !NILP (tem1
))
2385 copy_intervals_to_string (result
, current_buffer
, start
,
2392 /* Call Vbuffer_access_fontify_functions for the range START ... END
2393 in the current buffer, if necessary. */
2396 update_buffer_properties (EMACS_INT start
, EMACS_INT end
)
2398 /* If this buffer has some access functions,
2399 call them, specifying the range of the buffer being accessed. */
2400 if (!NILP (Vbuffer_access_fontify_functions
))
2402 Lisp_Object args
[3];
2405 args
[0] = Qbuffer_access_fontify_functions
;
2406 XSETINT (args
[1], start
);
2407 XSETINT (args
[2], end
);
2409 /* But don't call them if we can tell that the work
2410 has already been done. */
2411 if (!NILP (Vbuffer_access_fontified_property
))
2413 tem
= Ftext_property_any (args
[1], args
[2],
2414 Vbuffer_access_fontified_property
,
2417 Frun_hook_with_args (3, args
);
2420 Frun_hook_with_args (3, args
);
2424 DEFUN ("buffer-substring", Fbuffer_substring
, Sbuffer_substring
, 2, 2, 0,
2425 doc
: /* Return the contents of part of the current buffer as a string.
2426 The two arguments START and END are character positions;
2427 they can be in either order.
2428 The string returned is multibyte if the buffer is multibyte.
2430 This function copies the text properties of that part of the buffer
2431 into the result string; if you don't want the text properties,
2432 use `buffer-substring-no-properties' instead. */)
2433 (Lisp_Object start
, Lisp_Object end
)
2435 register EMACS_INT b
, e
;
2437 validate_region (&start
, &end
);
2441 return make_buffer_string (b
, e
, 1);
2444 DEFUN ("buffer-substring-no-properties", Fbuffer_substring_no_properties
,
2445 Sbuffer_substring_no_properties
, 2, 2, 0,
2446 doc
: /* Return the characters of part of the buffer, without the text properties.
2447 The two arguments START and END are character positions;
2448 they can be in either order. */)
2449 (Lisp_Object start
, Lisp_Object end
)
2451 register EMACS_INT b
, e
;
2453 validate_region (&start
, &end
);
2457 return make_buffer_string (b
, e
, 0);
2460 DEFUN ("buffer-string", Fbuffer_string
, Sbuffer_string
, 0, 0, 0,
2461 doc
: /* Return the contents of the current buffer as a string.
2462 If narrowing is in effect, this function returns only the visible part
2466 return make_buffer_string (BEGV
, ZV
, 1);
2469 DEFUN ("insert-buffer-substring", Finsert_buffer_substring
, Sinsert_buffer_substring
,
2471 doc
: /* Insert before point a substring of the contents of BUFFER.
2472 BUFFER may be a buffer or a buffer name.
2473 Arguments START and END are character positions specifying the substring.
2474 They default to the values of (point-min) and (point-max) in BUFFER. */)
2475 (Lisp_Object buffer
, Lisp_Object start
, Lisp_Object end
)
2477 register EMACS_INT b
, e
, temp
;
2478 register struct buffer
*bp
, *obuf
;
2481 buf
= Fget_buffer (buffer
);
2485 if (NILP (bp
->name
))
2486 error ("Selecting deleted buffer");
2492 CHECK_NUMBER_COERCE_MARKER (start
);
2499 CHECK_NUMBER_COERCE_MARKER (end
);
2504 temp
= b
, b
= e
, e
= temp
;
2506 if (!(BUF_BEGV (bp
) <= b
&& e
<= BUF_ZV (bp
)))
2507 args_out_of_range (start
, end
);
2509 obuf
= current_buffer
;
2510 set_buffer_internal_1 (bp
);
2511 update_buffer_properties (b
, e
);
2512 set_buffer_internal_1 (obuf
);
2514 insert_from_buffer (bp
, b
, e
- b
, 0);
2518 DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings
, Scompare_buffer_substrings
,
2520 doc
: /* Compare two substrings of two buffers; return result as number.
2521 the value is -N if first string is less after N-1 chars,
2522 +N if first string is greater after N-1 chars, or 0 if strings match.
2523 Each substring is represented as three arguments: BUFFER, START and END.
2524 That makes six args in all, three for each substring.
2526 The value of `case-fold-search' in the current buffer
2527 determines whether case is significant or ignored. */)
2528 (Lisp_Object buffer1
, Lisp_Object start1
, Lisp_Object end1
, Lisp_Object buffer2
, Lisp_Object start2
, Lisp_Object end2
)
2530 register EMACS_INT begp1
, endp1
, begp2
, endp2
, temp
;
2531 register struct buffer
*bp1
, *bp2
;
2532 register Lisp_Object trt
2533 = (!NILP (current_buffer
->case_fold_search
)
2534 ? current_buffer
->case_canon_table
: Qnil
);
2535 EMACS_INT chars
= 0;
2536 EMACS_INT i1
, i2
, i1_byte
, i2_byte
;
2538 /* Find the first buffer and its substring. */
2541 bp1
= current_buffer
;
2545 buf1
= Fget_buffer (buffer1
);
2548 bp1
= XBUFFER (buf1
);
2549 if (NILP (bp1
->name
))
2550 error ("Selecting deleted buffer");
2554 begp1
= BUF_BEGV (bp1
);
2557 CHECK_NUMBER_COERCE_MARKER (start1
);
2558 begp1
= XINT (start1
);
2561 endp1
= BUF_ZV (bp1
);
2564 CHECK_NUMBER_COERCE_MARKER (end1
);
2565 endp1
= XINT (end1
);
2569 temp
= begp1
, begp1
= endp1
, endp1
= temp
;
2571 if (!(BUF_BEGV (bp1
) <= begp1
2573 && endp1
<= BUF_ZV (bp1
)))
2574 args_out_of_range (start1
, end1
);
2576 /* Likewise for second substring. */
2579 bp2
= current_buffer
;
2583 buf2
= Fget_buffer (buffer2
);
2586 bp2
= XBUFFER (buf2
);
2587 if (NILP (bp2
->name
))
2588 error ("Selecting deleted buffer");
2592 begp2
= BUF_BEGV (bp2
);
2595 CHECK_NUMBER_COERCE_MARKER (start2
);
2596 begp2
= XINT (start2
);
2599 endp2
= BUF_ZV (bp2
);
2602 CHECK_NUMBER_COERCE_MARKER (end2
);
2603 endp2
= XINT (end2
);
2607 temp
= begp2
, begp2
= endp2
, endp2
= temp
;
2609 if (!(BUF_BEGV (bp2
) <= begp2
2611 && endp2
<= BUF_ZV (bp2
)))
2612 args_out_of_range (start2
, end2
);
2616 i1_byte
= buf_charpos_to_bytepos (bp1
, i1
);
2617 i2_byte
= buf_charpos_to_bytepos (bp2
, i2
);
2619 while (i1
< endp1
&& i2
< endp2
)
2621 /* When we find a mismatch, we must compare the
2622 characters, not just the bytes. */
2627 if (! NILP (bp1
->enable_multibyte_characters
))
2629 c1
= BUF_FETCH_MULTIBYTE_CHAR (bp1
, i1_byte
);
2630 BUF_INC_POS (bp1
, i1_byte
);
2635 c1
= BUF_FETCH_BYTE (bp1
, i1
);
2636 MAKE_CHAR_MULTIBYTE (c1
);
2640 if (! NILP (bp2
->enable_multibyte_characters
))
2642 c2
= BUF_FETCH_MULTIBYTE_CHAR (bp2
, i2_byte
);
2643 BUF_INC_POS (bp2
, i2_byte
);
2648 c2
= BUF_FETCH_BYTE (bp2
, i2
);
2649 MAKE_CHAR_MULTIBYTE (c2
);
2655 c1
= CHAR_TABLE_TRANSLATE (trt
, c1
);
2656 c2
= CHAR_TABLE_TRANSLATE (trt
, c2
);
2659 return make_number (- 1 - chars
);
2661 return make_number (chars
+ 1);
2666 /* The strings match as far as they go.
2667 If one is shorter, that one is less. */
2668 if (chars
< endp1
- begp1
)
2669 return make_number (chars
+ 1);
2670 else if (chars
< endp2
- begp2
)
2671 return make_number (- chars
- 1);
2673 /* Same length too => they are equal. */
2674 return make_number (0);
2678 subst_char_in_region_unwind (Lisp_Object arg
)
2680 return current_buffer
->undo_list
= arg
;
2684 subst_char_in_region_unwind_1 (Lisp_Object arg
)
2686 return current_buffer
->filename
= arg
;
2689 DEFUN ("subst-char-in-region", Fsubst_char_in_region
,
2690 Ssubst_char_in_region
, 4, 5, 0,
2691 doc
: /* From START to END, replace FROMCHAR with TOCHAR each time it occurs.
2692 If optional arg NOUNDO is non-nil, don't record this change for undo
2693 and don't mark the buffer as really changed.
2694 Both characters must have the same length of multi-byte form. */)
2695 (Lisp_Object start
, Lisp_Object end
, Lisp_Object fromchar
, Lisp_Object tochar
, Lisp_Object noundo
)
2697 register EMACS_INT pos
, pos_byte
, stop
, i
, len
, end_byte
;
2698 /* Keep track of the first change in the buffer:
2699 if 0 we haven't found it yet.
2700 if < 0 we've found it and we've run the before-change-function.
2701 if > 0 we've actually performed it and the value is its position. */
2702 EMACS_INT changed
= 0;
2703 unsigned char fromstr
[MAX_MULTIBYTE_LENGTH
], tostr
[MAX_MULTIBYTE_LENGTH
];
2705 int count
= SPECPDL_INDEX ();
2706 #define COMBINING_NO 0
2707 #define COMBINING_BEFORE 1
2708 #define COMBINING_AFTER 2
2709 #define COMBINING_BOTH (COMBINING_BEFORE | COMBINING_AFTER)
2710 int maybe_byte_combining
= COMBINING_NO
;
2711 EMACS_INT last_changed
= 0;
2712 int multibyte_p
= !NILP (current_buffer
->enable_multibyte_characters
);
2716 validate_region (&start
, &end
);
2717 CHECK_NUMBER (fromchar
);
2718 CHECK_NUMBER (tochar
);
2722 len
= CHAR_STRING (XFASTINT (fromchar
), fromstr
);
2723 if (CHAR_STRING (XFASTINT (tochar
), tostr
) != len
)
2724 error ("Characters in `subst-char-in-region' have different byte-lengths");
2725 if (!ASCII_BYTE_P (*tostr
))
2727 /* If *TOSTR is in the range 0x80..0x9F and TOCHAR is not a
2728 complete multibyte character, it may be combined with the
2729 after bytes. If it is in the range 0xA0..0xFF, it may be
2730 combined with the before and after bytes. */
2731 if (!CHAR_HEAD_P (*tostr
))
2732 maybe_byte_combining
= COMBINING_BOTH
;
2733 else if (BYTES_BY_CHAR_HEAD (*tostr
) > len
)
2734 maybe_byte_combining
= COMBINING_AFTER
;
2740 fromstr
[0] = XFASTINT (fromchar
);
2741 tostr
[0] = XFASTINT (tochar
);
2745 pos_byte
= CHAR_TO_BYTE (pos
);
2746 stop
= CHAR_TO_BYTE (XINT (end
));
2749 /* If we don't want undo, turn off putting stuff on the list.
2750 That's faster than getting rid of things,
2751 and it prevents even the entry for a first change.
2752 Also inhibit locking the file. */
2753 if (!changed
&& !NILP (noundo
))
2755 record_unwind_protect (subst_char_in_region_unwind
,
2756 current_buffer
->undo_list
);
2757 current_buffer
->undo_list
= Qt
;
2758 /* Don't do file-locking. */
2759 record_unwind_protect (subst_char_in_region_unwind_1
,
2760 current_buffer
->filename
);
2761 current_buffer
->filename
= Qnil
;
2764 if (pos_byte
< GPT_BYTE
)
2765 stop
= min (stop
, GPT_BYTE
);
2768 EMACS_INT pos_byte_next
= pos_byte
;
2770 if (pos_byte
>= stop
)
2772 if (pos_byte
>= end_byte
) break;
2775 p
= BYTE_POS_ADDR (pos_byte
);
2777 INC_POS (pos_byte_next
);
2780 if (pos_byte_next
- pos_byte
== len
2781 && p
[0] == fromstr
[0]
2783 || (p
[1] == fromstr
[1]
2784 && (len
== 2 || (p
[2] == fromstr
[2]
2785 && (len
== 3 || p
[3] == fromstr
[3]))))))
2788 /* We've already seen this and run the before-change-function;
2789 this time we only need to record the actual position. */
2794 modify_region (current_buffer
, pos
, XINT (end
), 0);
2796 if (! NILP (noundo
))
2798 if (MODIFF
- 1 == SAVE_MODIFF
)
2800 if (MODIFF
- 1 == BUF_AUTOSAVE_MODIFF (current_buffer
))
2801 BUF_AUTOSAVE_MODIFF (current_buffer
)++;
2804 /* The before-change-function may have moved the gap
2805 or even modified the buffer so we should start over. */
2809 /* Take care of the case where the new character
2810 combines with neighboring bytes. */
2811 if (maybe_byte_combining
2812 && (maybe_byte_combining
== COMBINING_AFTER
2813 ? (pos_byte_next
< Z_BYTE
2814 && ! CHAR_HEAD_P (FETCH_BYTE (pos_byte_next
)))
2815 : ((pos_byte_next
< Z_BYTE
2816 && ! CHAR_HEAD_P (FETCH_BYTE (pos_byte_next
)))
2817 || (pos_byte
> BEG_BYTE
2818 && ! ASCII_BYTE_P (FETCH_BYTE (pos_byte
- 1))))))
2820 Lisp_Object tem
, string
;
2822 struct gcpro gcpro1
;
2824 tem
= current_buffer
->undo_list
;
2827 /* Make a multibyte string containing this single character. */
2828 string
= make_multibyte_string (tostr
, 1, len
);
2829 /* replace_range is less efficient, because it moves the gap,
2830 but it handles combining correctly. */
2831 replace_range (pos
, pos
+ 1, string
,
2833 pos_byte_next
= CHAR_TO_BYTE (pos
);
2834 if (pos_byte_next
> pos_byte
)
2835 /* Before combining happened. We should not increment
2836 POS. So, to cancel the later increment of POS,
2840 INC_POS (pos_byte_next
);
2842 if (! NILP (noundo
))
2843 current_buffer
->undo_list
= tem
;
2850 record_change (pos
, 1);
2851 for (i
= 0; i
< len
; i
++) *p
++ = tostr
[i
];
2853 last_changed
= pos
+ 1;
2855 pos_byte
= pos_byte_next
;
2861 signal_after_change (changed
,
2862 last_changed
- changed
, last_changed
- changed
);
2863 update_compositions (changed
, last_changed
, CHECK_ALL
);
2866 unbind_to (count
, Qnil
);
2871 static Lisp_Object
check_translation (EMACS_INT
, EMACS_INT
, EMACS_INT
,
2874 /* Helper function for Ftranslate_region_internal.
2876 Check if a character sequence at POS (POS_BYTE) matches an element
2877 of VAL. VAL is a list (([FROM-CHAR ...] . TO) ...). If a matching
2878 element is found, return it. Otherwise return Qnil. */
2881 check_translation (EMACS_INT pos
, EMACS_INT pos_byte
, EMACS_INT end
,
2884 int buf_size
= 16, buf_used
= 0;
2885 int *buf
= alloca (sizeof (int) * buf_size
);
2887 for (; CONSP (val
); val
= XCDR (val
))
2896 if (! VECTORP (elt
))
2899 if (len
<= end
- pos
)
2901 for (i
= 0; i
< len
; i
++)
2905 unsigned char *p
= BYTE_POS_ADDR (pos_byte
);
2908 if (buf_used
== buf_size
)
2913 newbuf
= alloca (sizeof (int) * buf_size
);
2914 memcpy (newbuf
, buf
, sizeof (int) * buf_used
);
2917 buf
[buf_used
++] = STRING_CHAR_AND_LENGTH (p
, len1
);
2920 if (XINT (AREF (elt
, i
)) != buf
[i
])
2931 DEFUN ("translate-region-internal", Ftranslate_region_internal
,
2932 Stranslate_region_internal
, 3, 3, 0,
2933 doc
: /* Internal use only.
2934 From START to END, translate characters according to TABLE.
2935 TABLE is a string or a char-table; the Nth character in it is the
2936 mapping for the character with code N.
2937 It returns the number of characters changed. */)
2938 (Lisp_Object start
, Lisp_Object end
, register Lisp_Object table
)
2940 register unsigned char *tt
; /* Trans table. */
2941 register int nc
; /* New character. */
2942 int cnt
; /* Number of changes made. */
2943 EMACS_INT size
; /* Size of translate table. */
2944 EMACS_INT pos
, pos_byte
, end_pos
;
2945 int multibyte
= !NILP (current_buffer
->enable_multibyte_characters
);
2946 int string_multibyte
;
2949 validate_region (&start
, &end
);
2950 if (CHAR_TABLE_P (table
))
2952 if (! EQ (XCHAR_TABLE (table
)->purpose
, Qtranslation_table
))
2953 error ("Not a translation table");
2959 CHECK_STRING (table
);
2961 if (! multibyte
&& (SCHARS (table
) < SBYTES (table
)))
2962 table
= string_make_unibyte (table
);
2963 string_multibyte
= SCHARS (table
) < SBYTES (table
);
2964 size
= SBYTES (table
);
2969 pos_byte
= CHAR_TO_BYTE (pos
);
2970 end_pos
= XINT (end
);
2971 modify_region (current_buffer
, pos
, end_pos
, 0);
2974 for (; pos
< end_pos
; )
2976 register unsigned char *p
= BYTE_POS_ADDR (pos_byte
);
2977 unsigned char *str
, buf
[MAX_MULTIBYTE_LENGTH
];
2983 oc
= STRING_CHAR_AND_LENGTH (p
, len
);
2990 /* Reload as signal_after_change in last iteration may GC. */
2992 if (string_multibyte
)
2994 str
= tt
+ string_char_to_byte (table
, oc
);
2995 nc
= STRING_CHAR_AND_LENGTH (str
, str_len
);
3000 if (! ASCII_BYTE_P (nc
) && multibyte
)
3002 str_len
= BYTE8_STRING (nc
, buf
);
3017 val
= CHAR_TABLE_REF (table
, oc
);
3018 if (CHARACTERP (val
)
3019 && (c
= XINT (val
), CHAR_VALID_P (c
, 0)))
3022 str_len
= CHAR_STRING (nc
, buf
);
3025 else if (VECTORP (val
) || (CONSP (val
)))
3027 /* VAL is [TO_CHAR ...] or (([FROM-CHAR ...] . TO) ...)
3028 where TO is TO-CHAR or [TO-CHAR ...]. */
3033 if (nc
!= oc
&& nc
>= 0)
3035 /* Simple one char to one char translation. */
3040 /* This is less efficient, because it moves the gap,
3041 but it should handle multibyte characters correctly. */
3042 string
= make_multibyte_string (str
, 1, str_len
);
3043 replace_range (pos
, pos
+ 1, string
, 1, 0, 1);
3048 record_change (pos
, 1);
3049 while (str_len
-- > 0)
3051 signal_after_change (pos
, 1, 1);
3052 update_compositions (pos
, pos
+ 1, CHECK_BORDER
);
3062 val
= check_translation (pos
, pos_byte
, end_pos
, val
);
3069 /* VAL is ([FROM-CHAR ...] . TO). */
3070 len
= ASIZE (XCAR (val
));
3078 string
= Fconcat (1, &val
);
3082 string
= Fmake_string (make_number (1), val
);
3084 replace_range (pos
, pos
+ len
, string
, 1, 0, 1);
3085 pos_byte
+= SBYTES (string
);
3086 pos
+= SCHARS (string
);
3087 cnt
+= SCHARS (string
);
3088 end_pos
+= SCHARS (string
) - len
;
3096 return make_number (cnt
);
3099 DEFUN ("delete-region", Fdelete_region
, Sdelete_region
, 2, 2, "r",
3100 doc
: /* Delete the text between point and mark.
3102 When called from a program, expects two arguments,
3103 positions (integers or markers) specifying the stretch to be deleted. */)
3104 (Lisp_Object start
, Lisp_Object end
)
3106 validate_region (&start
, &end
);
3107 del_range (XINT (start
), XINT (end
));
3111 DEFUN ("delete-and-extract-region", Fdelete_and_extract_region
,
3112 Sdelete_and_extract_region
, 2, 2, 0,
3113 doc
: /* Delete the text between START and END and return it. */)
3114 (Lisp_Object start
, Lisp_Object end
)
3116 validate_region (&start
, &end
);
3117 if (XINT (start
) == XINT (end
))
3118 return empty_unibyte_string
;
3119 return del_range_1 (XINT (start
), XINT (end
), 1, 1);
3122 DEFUN ("widen", Fwiden
, Swiden
, 0, 0, "",
3123 doc
: /* Remove restrictions (narrowing) from current buffer.
3124 This allows the buffer's full text to be seen and edited. */)
3127 if (BEG
!= BEGV
|| Z
!= ZV
)
3128 current_buffer
->clip_changed
= 1;
3130 BEGV_BYTE
= BEG_BYTE
;
3131 SET_BUF_ZV_BOTH (current_buffer
, Z
, Z_BYTE
);
3132 /* Changing the buffer bounds invalidates any recorded current column. */
3133 invalidate_current_column ();
3137 DEFUN ("narrow-to-region", Fnarrow_to_region
, Snarrow_to_region
, 2, 2, "r",
3138 doc
: /* Restrict editing in this buffer to the current region.
3139 The rest of the text becomes temporarily invisible and untouchable
3140 but is not deleted; if you save the buffer in a file, the invisible
3141 text is included in the file. \\[widen] makes all visible again.
3142 See also `save-restriction'.
3144 When calling from a program, pass two arguments; positions (integers
3145 or markers) bounding the text that should remain visible. */)
3146 (register Lisp_Object start
, Lisp_Object end
)
3148 CHECK_NUMBER_COERCE_MARKER (start
);
3149 CHECK_NUMBER_COERCE_MARKER (end
);
3151 if (XINT (start
) > XINT (end
))
3154 tem
= start
; start
= end
; end
= tem
;
3157 if (!(BEG
<= XINT (start
) && XINT (start
) <= XINT (end
) && XINT (end
) <= Z
))
3158 args_out_of_range (start
, end
);
3160 if (BEGV
!= XFASTINT (start
) || ZV
!= XFASTINT (end
))
3161 current_buffer
->clip_changed
= 1;
3163 SET_BUF_BEGV (current_buffer
, XFASTINT (start
));
3164 SET_BUF_ZV (current_buffer
, XFASTINT (end
));
3165 if (PT
< XFASTINT (start
))
3166 SET_PT (XFASTINT (start
));
3167 if (PT
> XFASTINT (end
))
3168 SET_PT (XFASTINT (end
));
3169 /* Changing the buffer bounds invalidates any recorded current column. */
3170 invalidate_current_column ();
3175 save_restriction_save (void)
3177 if (BEGV
== BEG
&& ZV
== Z
)
3178 /* The common case that the buffer isn't narrowed.
3179 We return just the buffer object, which save_restriction_restore
3180 recognizes as meaning `no restriction'. */
3181 return Fcurrent_buffer ();
3183 /* We have to save a restriction, so return a pair of markers, one
3184 for the beginning and one for the end. */
3186 Lisp_Object beg
, end
;
3188 beg
= buildmark (BEGV
, BEGV_BYTE
);
3189 end
= buildmark (ZV
, ZV_BYTE
);
3191 /* END must move forward if text is inserted at its exact location. */
3192 XMARKER(end
)->insertion_type
= 1;
3194 return Fcons (beg
, end
);
3199 save_restriction_restore (Lisp_Object data
)
3201 struct buffer
*cur
= NULL
;
3202 struct buffer
*buf
= (CONSP (data
)
3203 ? XMARKER (XCAR (data
))->buffer
3206 if (buf
&& buf
!= current_buffer
&& !NILP (buf
->pt_marker
))
3207 { /* If `buf' uses markers to keep track of PT, BEGV, and ZV (as
3208 is the case if it is or has an indirect buffer), then make
3209 sure it is current before we update BEGV, so
3210 set_buffer_internal takes care of managing those markers. */
3211 cur
= current_buffer
;
3212 set_buffer_internal (buf
);
3216 /* A pair of marks bounding a saved restriction. */
3218 struct Lisp_Marker
*beg
= XMARKER (XCAR (data
));
3219 struct Lisp_Marker
*end
= XMARKER (XCDR (data
));
3220 eassert (buf
== end
->buffer
);
3222 if (buf
/* Verify marker still points to a buffer. */
3223 && (beg
->charpos
!= BUF_BEGV (buf
) || end
->charpos
!= BUF_ZV (buf
)))
3224 /* The restriction has changed from the saved one, so restore
3225 the saved restriction. */
3227 EMACS_INT pt
= BUF_PT (buf
);
3229 SET_BUF_BEGV_BOTH (buf
, beg
->charpos
, beg
->bytepos
);
3230 SET_BUF_ZV_BOTH (buf
, end
->charpos
, end
->bytepos
);
3232 if (pt
< beg
->charpos
|| pt
> end
->charpos
)
3233 /* The point is outside the new visible range, move it inside. */
3234 SET_BUF_PT_BOTH (buf
,
3235 clip_to_bounds (beg
->charpos
, pt
, end
->charpos
),
3236 clip_to_bounds (beg
->bytepos
, BUF_PT_BYTE (buf
),
3239 buf
->clip_changed
= 1; /* Remember that the narrowing changed. */
3243 /* A buffer, which means that there was no old restriction. */
3245 if (buf
/* Verify marker still points to a buffer. */
3246 && (BUF_BEGV (buf
) != BUF_BEG (buf
) || BUF_ZV (buf
) != BUF_Z (buf
)))
3247 /* The buffer has been narrowed, get rid of the narrowing. */
3249 SET_BUF_BEGV_BOTH (buf
, BUF_BEG (buf
), BUF_BEG_BYTE (buf
));
3250 SET_BUF_ZV_BOTH (buf
, BUF_Z (buf
), BUF_Z_BYTE (buf
));
3252 buf
->clip_changed
= 1; /* Remember that the narrowing changed. */
3257 set_buffer_internal (cur
);
3262 DEFUN ("save-restriction", Fsave_restriction
, Ssave_restriction
, 0, UNEVALLED
, 0,
3263 doc
: /* Execute BODY, saving and restoring current buffer's restrictions.
3264 The buffer's restrictions make parts of the beginning and end invisible.
3265 \(They are set up with `narrow-to-region' and eliminated with `widen'.)
3266 This special form, `save-restriction', saves the current buffer's restrictions
3267 when it is entered, and restores them when it is exited.
3268 So any `narrow-to-region' within BODY lasts only until the end of the form.
3269 The old restrictions settings are restored
3270 even in case of abnormal exit (throw or error).
3272 The value returned is the value of the last form in BODY.
3274 Note: if you are using both `save-excursion' and `save-restriction',
3275 use `save-excursion' outermost:
3276 (save-excursion (save-restriction ...))
3278 usage: (save-restriction &rest BODY) */)
3281 register Lisp_Object val
;
3282 int count
= SPECPDL_INDEX ();
3284 record_unwind_protect (save_restriction_restore
, save_restriction_save ());
3285 val
= Fprogn (body
);
3286 return unbind_to (count
, val
);
3289 /* Buffer for the most recent text displayed by Fmessage_box. */
3290 static char *message_text
;
3292 /* Allocated length of that buffer. */
3293 static int message_length
;
3295 DEFUN ("message", Fmessage
, Smessage
, 1, MANY
, 0,
3296 doc
: /* Display a message at the bottom of the screen.
3297 The message also goes into the `*Messages*' buffer.
3298 \(In keyboard macros, that's all it does.)
3301 The first argument is a format control string, and the rest are data
3302 to be formatted under control of the string. See `format' for details.
3304 Note: Use (message "%s" VALUE) to print the value of expressions and
3305 variables to avoid accidentally interpreting `%' as format specifiers.
3307 If the first argument is nil or the empty string, the function clears
3308 any existing message; this lets the minibuffer contents show. See
3309 also `current-message'.
3311 usage: (message FORMAT-STRING &rest ARGS) */)
3312 (int nargs
, Lisp_Object
*args
)
3315 || (STRINGP (args
[0])
3316 && SBYTES (args
[0]) == 0))
3323 register Lisp_Object val
;
3324 val
= Fformat (nargs
, args
);
3325 message3 (val
, SBYTES (val
), STRING_MULTIBYTE (val
));
3330 DEFUN ("message-box", Fmessage_box
, Smessage_box
, 1, MANY
, 0,
3331 doc
: /* Display a message, in a dialog box if possible.
3332 If a dialog box is not available, use the echo area.
3333 The first argument is a format control string, and the rest are data
3334 to be formatted under control of the string. See `format' for details.
3336 If the first argument is nil or the empty string, clear any existing
3337 message; let the minibuffer contents show.
3339 usage: (message-box FORMAT-STRING &rest ARGS) */)
3340 (int nargs
, Lisp_Object
*args
)
3349 register Lisp_Object val
;
3350 val
= Fformat (nargs
, args
);
3352 /* The MS-DOS frames support popup menus even though they are
3353 not FRAME_WINDOW_P. */
3354 if (FRAME_WINDOW_P (XFRAME (selected_frame
))
3355 || FRAME_MSDOS_P (XFRAME (selected_frame
)))
3357 Lisp_Object pane
, menu
, obj
;
3358 struct gcpro gcpro1
;
3359 pane
= Fcons (Fcons (build_string ("OK"), Qt
), Qnil
);
3361 menu
= Fcons (val
, pane
);
3362 obj
= Fx_popup_dialog (Qt
, menu
, Qt
);
3366 #endif /* HAVE_MENUS */
3367 /* Copy the data so that it won't move when we GC. */
3370 message_text
= (char *)xmalloc (80);
3371 message_length
= 80;
3373 if (SBYTES (val
) > message_length
)
3375 message_length
= SBYTES (val
);
3376 message_text
= (char *)xrealloc (message_text
, message_length
);
3378 memcpy (message_text
, SDATA (val
), SBYTES (val
));
3379 message2 (message_text
, SBYTES (val
),
3380 STRING_MULTIBYTE (val
));
3385 DEFUN ("message-or-box", Fmessage_or_box
, Smessage_or_box
, 1, MANY
, 0,
3386 doc
: /* Display a message in a dialog box or in the echo area.
3387 If this command was invoked with the mouse, use a dialog box if
3388 `use-dialog-box' is non-nil.
3389 Otherwise, use the echo area.
3390 The first argument is a format control string, and the rest are data
3391 to be formatted under control of the string. See `format' for details.
3393 If the first argument is nil or the empty string, clear any existing
3394 message; let the minibuffer contents show.
3396 usage: (message-or-box FORMAT-STRING &rest ARGS) */)
3397 (int nargs
, Lisp_Object
*args
)
3400 if ((NILP (last_nonmenu_event
) || CONSP (last_nonmenu_event
))
3402 return Fmessage_box (nargs
, args
);
3404 return Fmessage (nargs
, args
);
3407 DEFUN ("current-message", Fcurrent_message
, Scurrent_message
, 0, 0, 0,
3408 doc
: /* Return the string currently displayed in the echo area, or nil if none. */)
3411 return current_message ();
3415 DEFUN ("propertize", Fpropertize
, Spropertize
, 1, MANY
, 0,
3416 doc
: /* Return a copy of STRING with text properties added.
3417 First argument is the string to copy.
3418 Remaining arguments form a sequence of PROPERTY VALUE pairs for text
3419 properties to add to the result.
3420 usage: (propertize STRING &rest PROPERTIES) */)
3421 (int nargs
, Lisp_Object
*args
)
3423 Lisp_Object properties
, string
;
3424 struct gcpro gcpro1
, gcpro2
;
3427 /* Number of args must be odd. */
3428 if ((nargs
& 1) == 0 || nargs
< 1)
3429 error ("Wrong number of arguments");
3431 properties
= string
= Qnil
;
3432 GCPRO2 (properties
, string
);
3434 /* First argument must be a string. */
3435 CHECK_STRING (args
[0]);
3436 string
= Fcopy_sequence (args
[0]);
3438 for (i
= 1; i
< nargs
; i
+= 2)
3439 properties
= Fcons (args
[i
], Fcons (args
[i
+ 1], properties
));
3441 Fadd_text_properties (make_number (0),
3442 make_number (SCHARS (string
)),
3443 properties
, string
);
3444 RETURN_UNGCPRO (string
);
3448 /* Number of bytes that STRING will occupy when put into the result.
3449 MULTIBYTE is nonzero if the result should be multibyte. */
3451 #define CONVERTED_BYTE_SIZE(MULTIBYTE, STRING) \
3452 (((MULTIBYTE) && ! STRING_MULTIBYTE (STRING)) \
3453 ? count_size_as_multibyte (SDATA (STRING), SBYTES (STRING)) \
3456 DEFUN ("format", Fformat
, Sformat
, 1, MANY
, 0,
3457 doc
: /* Format a string out of a format-string and arguments.
3458 The first argument is a format control string.
3459 The other arguments are substituted into it to make the result, a string.
3461 The format control string may contain %-sequences meaning to substitute
3462 the next available argument:
3464 %s means print a string argument. Actually, prints any object, with `princ'.
3465 %d means print as number in decimal (%o octal, %x hex).
3466 %X is like %x, but uses upper case.
3467 %e means print a number in exponential notation.
3468 %f means print a number in decimal-point notation.
3469 %g means print a number in exponential notation
3470 or decimal-point notation, whichever uses fewer characters.
3471 %c means print a number as a single character.
3472 %S means print any object as an s-expression (using `prin1').
3474 The argument used for %d, %o, %x, %e, %f, %g or %c must be a number.
3475 Use %% to put a single % into the output.
3477 A %-sequence may contain optional flag, width, and precision
3478 specifiers, as follows:
3480 %<flags><width><precision>character
3482 where flags is [+ #-0]+, width is [0-9]+, and precision is .[0-9]+
3484 The + flag character inserts a + before any positive number, while a
3485 space inserts a space before any positive number; these flags only
3486 affect %d, %e, %f, and %g sequences, and the + flag takes precedence.
3487 The # flag means to use an alternate display form for %o, %x, %X, %e,
3488 %f, and %g sequences. The - and 0 flags affect the width specifier,
3491 The width specifier supplies a lower limit for the length of the
3492 printed representation. The padding, if any, normally goes on the
3493 left, but it goes on the right if the - flag is present. The padding
3494 character is normally a space, but it is 0 if the 0 flag is present.
3495 The - flag takes precedence over the 0 flag.
3497 For %e, %f, and %g sequences, the number after the "." in the
3498 precision specifier says how many decimal places to show; if zero, the
3499 decimal point itself is omitted. For %s and %S, the precision
3500 specifier truncates the string to the given width.
3502 usage: (format STRING &rest OBJECTS) */)
3503 (int nargs
, register Lisp_Object
*args
)
3505 register int n
; /* The number of the next arg to substitute */
3506 register EMACS_INT total
; /* An estimate of the final length */
3508 register unsigned char *format
, *end
, *format_start
;
3510 /* Nonzero if the output should be a multibyte string,
3511 which is true if any of the inputs is one. */
3513 /* When we make a multibyte string, we must pay attention to the
3514 byte combining problem, i.e., a byte may be combined with a
3515 multibyte character of the previous string. This flag tells if we
3516 must consider such a situation or not. */
3517 int maybe_combine_byte
;
3518 unsigned char *this_format
;
3519 /* Precision for each spec, or -1, a flag value meaning no precision
3520 was given in that spec. Element 0, corresonding to the format
3521 string itself, will not be used. Element NARGS, corresponding to
3522 no argument, *will* be assigned to in the case that a `%' and `.'
3523 occur after the final format specifier. */
3524 int *precision
= (int *) (alloca ((nargs
+ 1) * sizeof (int)));
3527 int arg_intervals
= 0;
3530 /* discarded[I] is 1 if byte I of the format
3531 string was not copied into the output.
3532 It is 2 if byte I was not the first byte of its character. */
3533 char *discarded
= 0;
3535 /* Each element records, for one argument,
3536 the start and end bytepos in the output string,
3537 and whether the argument is a string with intervals.
3538 info[0] is unused. Unused elements have -1 for start. */
3541 int start
, end
, intervals
;
3544 /* It should not be necessary to GCPRO ARGS, because
3545 the caller in the interpreter should take care of that. */
3547 /* Try to determine whether the result should be multibyte.
3548 This is not always right; sometimes the result needs to be multibyte
3549 because of an object that we will pass through prin1,
3550 and in that case, we won't know it here. */
3551 for (n
= 0; n
< nargs
; n
++)
3553 if (STRINGP (args
[n
]) && STRING_MULTIBYTE (args
[n
]))
3555 /* Piggyback on this loop to initialize precision[N]. */
3558 precision
[nargs
] = -1;
3560 CHECK_STRING (args
[0]);
3561 /* We may have to change "%S" to "%s". */
3562 args
[0] = Fcopy_sequence (args
[0]);
3564 /* GC should never happen here, so abort if it does. */
3567 /* If we start out planning a unibyte result,
3568 then discover it has to be multibyte, we jump back to retry.
3569 That can only happen from the first large while loop below. */
3572 format
= SDATA (args
[0]);
3573 format_start
= format
;
3574 end
= format
+ SBYTES (args
[0]);
3577 /* Make room in result for all the non-%-codes in the control string. */
3578 total
= 5 + CONVERTED_BYTE_SIZE (multibyte
, args
[0]) + 1;
3580 /* Allocate the info and discarded tables. */
3582 int nbytes
= (nargs
+1) * sizeof *info
;
3585 info
= (struct info
*) alloca (nbytes
);
3586 memset (info
, 0, nbytes
);
3587 for (i
= 0; i
<= nargs
; i
++)
3590 SAFE_ALLOCA (discarded
, char *, SBYTES (args
[0]));
3591 memset (discarded
, 0, SBYTES (args
[0]));
3594 /* Add to TOTAL enough space to hold the converted arguments. */
3597 while (format
!= end
)
3598 if (*format
++ == '%')
3600 EMACS_INT thissize
= 0;
3601 EMACS_INT actual_width
= 0;
3602 unsigned char *this_format_start
= format
- 1;
3603 int field_width
= 0;
3605 /* General format specifications look like
3607 '%' [flags] [field-width] [precision] format
3612 field-width ::= [0-9]+
3613 precision ::= '.' [0-9]*
3615 If a field-width is specified, it specifies to which width
3616 the output should be padded with blanks, if the output
3617 string is shorter than field-width.
3619 If precision is specified, it specifies the number of
3620 digits to print after the '.' for floats, or the max.
3621 number of chars to print from a string. */
3623 while (format
!= end
3624 && (*format
== '-' || *format
== '0' || *format
== '#'
3625 || * format
== ' ' || *format
== '+'))
3628 if (*format
>= '0' && *format
<= '9')
3630 for (field_width
= 0; *format
>= '0' && *format
<= '9'; ++format
)
3631 field_width
= 10 * field_width
+ *format
- '0';
3634 /* N is not incremented for another few lines below, so refer to
3635 element N+1 (which might be precision[NARGS]). */
3639 for (precision
[n
+1] = 0; *format
>= '0' && *format
<= '9'; ++format
)
3640 precision
[n
+1] = 10 * precision
[n
+1] + *format
- '0';
3643 /* Extra +1 for 'l' that we may need to insert into the
3645 if (format
- this_format_start
+ 2 > longest_format
)
3646 longest_format
= format
- this_format_start
+ 2;
3649 error ("Format string ends in middle of format specifier");
3652 else if (++n
>= nargs
)
3653 error ("Not enough arguments for format string");
3654 else if (*format
== 'S')
3656 /* For `S', prin1 the argument and then treat like a string. */
3657 register Lisp_Object tem
;
3658 tem
= Fprin1_to_string (args
[n
], Qnil
);
3659 if (STRING_MULTIBYTE (tem
) && ! multibyte
)
3665 /* If we restart the loop, we should not come here again
3666 because args[n] is now a string and calling
3667 Fprin1_to_string on it produces superflous double
3668 quotes. So, change "%S" to "%s" now. */
3672 else if (SYMBOLP (args
[n
]))
3674 args
[n
] = SYMBOL_NAME (args
[n
]);
3675 if (STRING_MULTIBYTE (args
[n
]) && ! multibyte
)
3682 else if (STRINGP (args
[n
]))
3685 if (*format
!= 's' && *format
!= 'S')
3686 error ("Format specifier doesn't match argument type");
3687 /* In the case (PRECISION[N] > 0), THISSIZE may not need
3688 to be as large as is calculated here. Easy check for
3689 the case PRECISION = 0. */
3690 thissize
= precision
[n
] ? CONVERTED_BYTE_SIZE (multibyte
, args
[n
]) : 0;
3691 /* The precision also constrains how much of the argument
3692 string will finally appear (Bug#5710). */
3693 actual_width
= lisp_string_width (args
[n
], -1, NULL
, NULL
);
3694 if (precision
[n
] != -1)
3695 actual_width
= min (actual_width
, precision
[n
]);
3697 /* Would get MPV otherwise, since Lisp_Int's `point' to low memory. */
3698 else if (INTEGERP (args
[n
]) && *format
!= 's')
3700 /* The following loop assumes the Lisp type indicates
3701 the proper way to pass the argument.
3702 So make sure we have a flonum if the argument should
3704 if (*format
== 'e' || *format
== 'f' || *format
== 'g')
3705 args
[n
] = Ffloat (args
[n
]);
3707 if (*format
!= 'd' && *format
!= 'o' && *format
!= 'x'
3708 && *format
!= 'i' && *format
!= 'X' && *format
!= 'c')
3709 error ("Invalid format operation %%%c", *format
);
3711 thissize
= 30 + (precision
[n
] > 0 ? precision
[n
] : 0);
3714 if (! ASCII_CHAR_P (XINT (args
[n
]))
3715 /* Note: No one can remeber why we have to treat
3716 the character 0 as a multibyte character here.
3717 But, until it causes a real problem, let's
3719 || XINT (args
[n
]) == 0)
3726 args
[n
] = Fchar_to_string (args
[n
]);
3727 thissize
= SBYTES (args
[n
]);
3729 else if (! ASCII_BYTE_P (XINT (args
[n
])) && multibyte
)
3732 = Fchar_to_string (Funibyte_char_to_multibyte (args
[n
]));
3733 thissize
= SBYTES (args
[n
]);
3737 else if (FLOATP (args
[n
]) && *format
!= 's')
3739 if (! (*format
== 'e' || *format
== 'f' || *format
== 'g'))
3741 if (*format
!= 'd' && *format
!= 'o' && *format
!= 'x'
3742 && *format
!= 'i' && *format
!= 'X' && *format
!= 'c')
3743 error ("Invalid format operation %%%c", *format
);
3744 /* This fails unnecessarily if args[n] is bigger than
3745 most-positive-fixnum but smaller than MAXINT.
3746 These cases are important because we sometimes use floats
3747 to represent such integer values (typically such values
3748 come from UIDs or PIDs). */
3749 /* args[n] = Ftruncate (args[n], Qnil); */
3752 /* Note that we're using sprintf to print floats,
3753 so we have to take into account what that function
3755 /* Filter out flag value of -1. */
3756 thissize
= (MAX_10_EXP
+ 100
3757 + (precision
[n
] > 0 ? precision
[n
] : 0));
3761 /* Anything but a string, convert to a string using princ. */
3762 register Lisp_Object tem
;
3763 tem
= Fprin1_to_string (args
[n
], Qt
);
3764 if (STRING_MULTIBYTE (tem
) && ! multibyte
)
3773 thissize
+= max (0, field_width
- actual_width
);
3774 total
+= thissize
+ 4;
3779 /* Now we can no longer jump to retry.
3780 TOTAL and LONGEST_FORMAT are known for certain. */
3782 this_format
= (unsigned char *) alloca (longest_format
+ 1);
3784 /* Allocate the space for the result.
3785 Note that TOTAL is an overestimate. */
3786 SAFE_ALLOCA (buf
, char *, total
);
3792 /* Scan the format and store result in BUF. */
3793 format
= SDATA (args
[0]);
3794 format_start
= format
;
3795 end
= format
+ SBYTES (args
[0]);
3796 maybe_combine_byte
= 0;
3797 while (format
!= end
)
3803 unsigned char *this_format_start
= format
;
3805 discarded
[format
- format_start
] = 1;
3808 while (strchr ("-+0# ", *format
))
3814 discarded
[format
- format_start
] = 1;
3818 minlen
= atoi (format
);
3820 while ((*format
>= '0' && *format
<= '9') || *format
== '.')
3822 discarded
[format
- format_start
] = 1;
3826 if (*format
++ == '%')
3835 discarded
[format
- format_start
- 1] = 1;
3836 info
[n
].start
= nchars
;
3838 if (STRINGP (args
[n
]))
3840 /* handle case (precision[n] >= 0) */
3843 EMACS_INT nbytes
, start
, end
;
3844 EMACS_INT nchars_string
;
3846 /* lisp_string_width ignores a precision of 0, but GNU
3847 libc functions print 0 characters when the precision
3848 is 0. Imitate libc behavior here. Changing
3849 lisp_string_width is the right thing, and will be
3850 done, but meanwhile we work with it. */
3852 if (precision
[n
] == 0)
3853 width
= nchars_string
= nbytes
= 0;
3854 else if (precision
[n
] > 0)
3855 width
= lisp_string_width (args
[n
], precision
[n
],
3856 &nchars_string
, &nbytes
);
3858 { /* no precision spec given for this argument */
3859 width
= lisp_string_width (args
[n
], -1, NULL
, NULL
);
3860 nbytes
= SBYTES (args
[n
]);
3861 nchars_string
= SCHARS (args
[n
]);
3864 /* If spec requires it, pad on right with spaces. */
3865 padding
= minlen
- width
;
3867 while (padding
-- > 0)
3873 info
[n
].start
= start
= nchars
;
3874 nchars
+= nchars_string
;
3879 && !ASCII_BYTE_P (*((unsigned char *) p
- 1))
3880 && STRING_MULTIBYTE (args
[n
])
3881 && !CHAR_HEAD_P (SREF (args
[n
], 0)))
3882 maybe_combine_byte
= 1;
3884 p
+= copy_text (SDATA (args
[n
]), p
,
3886 STRING_MULTIBYTE (args
[n
]), multibyte
);
3888 info
[n
].end
= nchars
;
3891 while (padding
-- > 0)
3897 /* If this argument has text properties, record where
3898 in the result string it appears. */
3899 if (STRING_INTERVALS (args
[n
]))
3900 info
[n
].intervals
= arg_intervals
= 1;
3902 else if (INTEGERP (args
[n
]) || FLOATP (args
[n
]))
3906 memcpy (this_format
, this_format_start
,
3907 format
- this_format_start
);
3908 this_format
[format
- this_format_start
] = 0;
3910 if (format
[-1] == 'e' || format
[-1] == 'f' || format
[-1] == 'g')
3911 sprintf (p
, this_format
, XFLOAT_DATA (args
[n
]));
3914 if (sizeof (EMACS_INT
) > sizeof (int)
3915 && format
[-1] != 'c')
3917 /* Insert 'l' before format spec. */
3918 this_format
[format
- this_format_start
]
3919 = this_format
[format
- this_format_start
- 1];
3920 this_format
[format
- this_format_start
- 1] = 'l';
3921 this_format
[format
- this_format_start
+ 1] = 0;
3924 if (INTEGERP (args
[n
]))
3926 if (format
[-1] == 'c')
3927 sprintf (p
, this_format
, (int) XINT (args
[n
]));
3928 else if (format
[-1] == 'd')
3929 sprintf (p
, this_format
, XINT (args
[n
]));
3930 /* Don't sign-extend for octal or hex printing. */
3932 sprintf (p
, this_format
, XUINT (args
[n
]));
3934 else if (format
[-1] == 'c')
3935 sprintf (p
, this_format
, (int) XFLOAT_DATA (args
[n
]));
3936 else if (format
[-1] == 'd')
3937 /* Maybe we should use "%1.0f" instead so it also works
3938 for values larger than MAXINT. */
3939 sprintf (p
, this_format
, (EMACS_INT
) XFLOAT_DATA (args
[n
]));
3941 /* Don't sign-extend for octal or hex printing. */
3942 sprintf (p
, this_format
, (EMACS_UINT
) XFLOAT_DATA (args
[n
]));
3947 && !ASCII_BYTE_P (*((unsigned char *) p
- 1))
3948 && !CHAR_HEAD_P (*((unsigned char *) p
)))
3949 maybe_combine_byte
= 1;
3950 this_nchars
= strlen (p
);
3952 p
+= str_to_multibyte (p
, buf
+ total
- 1 - p
, this_nchars
);
3955 nchars
+= this_nchars
;
3956 info
[n
].end
= nchars
;
3960 else if (STRING_MULTIBYTE (args
[0]))
3962 /* Copy a whole multibyte character. */
3965 && !ASCII_BYTE_P (*((unsigned char *) p
- 1))
3966 && !CHAR_HEAD_P (*format
))
3967 maybe_combine_byte
= 1;
3969 while (! CHAR_HEAD_P (*format
))
3971 discarded
[format
- format_start
] = 2;
3978 /* Convert a single-byte character to multibyte. */
3979 int len
= copy_text (format
, p
, 1, 0, 1);
3986 *p
++ = *format
++, nchars
++;
3989 if (p
> buf
+ total
)
3992 if (maybe_combine_byte
)
3993 nchars
= multibyte_chars_in_text (buf
, p
- buf
);
3994 val
= make_specified_string (buf
, nchars
, p
- buf
, multibyte
);
3996 /* If we allocated BUF with malloc, free it too. */
3999 /* If the format string has text properties, or any of the string
4000 arguments has text properties, set up text properties of the
4003 if (STRING_INTERVALS (args
[0]) || arg_intervals
)
4005 Lisp_Object len
, new_len
, props
;
4006 struct gcpro gcpro1
;
4008 /* Add text properties from the format string. */
4009 len
= make_number (SCHARS (args
[0]));
4010 props
= text_property_list (args
[0], make_number (0), len
, Qnil
);
4015 EMACS_INT bytepos
= 0, position
= 0, translated
= 0;
4019 /* Adjust the bounds of each text property
4020 to the proper start and end in the output string. */
4022 /* Put the positions in PROPS in increasing order, so that
4023 we can do (effectively) one scan through the position
4024 space of the format string. */
4025 props
= Fnreverse (props
);
4027 /* BYTEPOS is the byte position in the format string,
4028 POSITION is the untranslated char position in it,
4029 TRANSLATED is the translated char position in BUF,
4030 and ARGN is the number of the next arg we will come to. */
4031 for (list
= props
; CONSP (list
); list
= XCDR (list
))
4038 /* First adjust the property start position. */
4039 pos
= XINT (XCAR (item
));
4041 /* Advance BYTEPOS, POSITION, TRANSLATED and ARGN
4042 up to this position. */
4043 for (; position
< pos
; bytepos
++)
4045 if (! discarded
[bytepos
])
4046 position
++, translated
++;
4047 else if (discarded
[bytepos
] == 1)
4050 if (translated
== info
[argn
].start
)
4052 translated
+= info
[argn
].end
- info
[argn
].start
;
4058 XSETCAR (item
, make_number (translated
));
4060 /* Likewise adjust the property end position. */
4061 pos
= XINT (XCAR (XCDR (item
)));
4063 for (; position
< pos
; bytepos
++)
4065 if (! discarded
[bytepos
])
4066 position
++, translated
++;
4067 else if (discarded
[bytepos
] == 1)
4070 if (translated
== info
[argn
].start
)
4072 translated
+= info
[argn
].end
- info
[argn
].start
;
4078 XSETCAR (XCDR (item
), make_number (translated
));
4081 add_text_properties_from_list (val
, props
, make_number (0));
4084 /* Add text properties from arguments. */
4086 for (n
= 1; n
< nargs
; ++n
)
4087 if (info
[n
].intervals
)
4089 len
= make_number (SCHARS (args
[n
]));
4090 new_len
= make_number (info
[n
].end
- info
[n
].start
);
4091 props
= text_property_list (args
[n
], make_number (0), len
, Qnil
);
4092 props
= extend_property_ranges (props
, new_len
);
4093 /* If successive arguments have properties, be sure that
4094 the value of `composition' property be the copy. */
4095 if (n
> 1 && info
[n
- 1].end
)
4096 make_composition_value_copy (props
);
4097 add_text_properties_from_list (val
, props
,
4098 make_number (info
[n
].start
));
4108 format2 (const char *string1
, Lisp_Object arg0
, Lisp_Object arg1
)
4110 Lisp_Object args
[3];
4111 args
[0] = build_string (string1
);
4114 return Fformat (3, args
);
4117 DEFUN ("char-equal", Fchar_equal
, Schar_equal
, 2, 2, 0,
4118 doc
: /* Return t if two characters match, optionally ignoring case.
4119 Both arguments must be characters (i.e. integers).
4120 Case is ignored if `case-fold-search' is non-nil in the current buffer. */)
4121 (register Lisp_Object c1
, Lisp_Object c2
)
4124 /* Check they're chars, not just integers, otherwise we could get array
4125 bounds violations in DOWNCASE. */
4126 CHECK_CHARACTER (c1
);
4127 CHECK_CHARACTER (c2
);
4129 if (XINT (c1
) == XINT (c2
))
4131 if (NILP (current_buffer
->case_fold_search
))
4134 /* Do these in separate statements,
4135 then compare the variables.
4136 because of the way DOWNCASE uses temp variables. */
4138 if (NILP (current_buffer
->enable_multibyte_characters
)
4139 && ! ASCII_CHAR_P (i1
))
4141 MAKE_CHAR_MULTIBYTE (i1
);
4144 if (NILP (current_buffer
->enable_multibyte_characters
)
4145 && ! ASCII_CHAR_P (i2
))
4147 MAKE_CHAR_MULTIBYTE (i2
);
4151 return (i1
== i2
? Qt
: Qnil
);
4154 /* Transpose the markers in two regions of the current buffer, and
4155 adjust the ones between them if necessary (i.e.: if the regions
4158 START1, END1 are the character positions of the first region.
4159 START1_BYTE, END1_BYTE are the byte positions.
4160 START2, END2 are the character positions of the second region.
4161 START2_BYTE, END2_BYTE are the byte positions.
4163 Traverses the entire marker list of the buffer to do so, adding an
4164 appropriate amount to some, subtracting from some, and leaving the
4165 rest untouched. Most of this is copied from adjust_markers in insdel.c.
4167 It's the caller's job to ensure that START1 <= END1 <= START2 <= END2. */
4170 transpose_markers (EMACS_INT start1
, EMACS_INT end1
,
4171 EMACS_INT start2
, EMACS_INT end2
,
4172 EMACS_INT start1_byte
, EMACS_INT end1_byte
,
4173 EMACS_INT start2_byte
, EMACS_INT end2_byte
)
4175 register EMACS_INT amt1
, amt1_byte
, amt2
, amt2_byte
, diff
, diff_byte
, mpos
;
4176 register struct Lisp_Marker
*marker
;
4178 /* Update point as if it were a marker. */
4182 TEMP_SET_PT_BOTH (PT
+ (end2
- end1
),
4183 PT_BYTE
+ (end2_byte
- end1_byte
));
4184 else if (PT
< start2
)
4185 TEMP_SET_PT_BOTH (PT
+ (end2
- start2
) - (end1
- start1
),
4186 (PT_BYTE
+ (end2_byte
- start2_byte
)
4187 - (end1_byte
- start1_byte
)));
4189 TEMP_SET_PT_BOTH (PT
- (start2
- start1
),
4190 PT_BYTE
- (start2_byte
- start1_byte
));
4192 /* We used to adjust the endpoints here to account for the gap, but that
4193 isn't good enough. Even if we assume the caller has tried to move the
4194 gap out of our way, it might still be at start1 exactly, for example;
4195 and that places it `inside' the interval, for our purposes. The amount
4196 of adjustment is nontrivial if there's a `denormalized' marker whose
4197 position is between GPT and GPT + GAP_SIZE, so it's simpler to leave
4198 the dirty work to Fmarker_position, below. */
4200 /* The difference between the region's lengths */
4201 diff
= (end2
- start2
) - (end1
- start1
);
4202 diff_byte
= (end2_byte
- start2_byte
) - (end1_byte
- start1_byte
);
4204 /* For shifting each marker in a region by the length of the other
4205 region plus the distance between the regions. */
4206 amt1
= (end2
- start2
) + (start2
- end1
);
4207 amt2
= (end1
- start1
) + (start2
- end1
);
4208 amt1_byte
= (end2_byte
- start2_byte
) + (start2_byte
- end1_byte
);
4209 amt2_byte
= (end1_byte
- start1_byte
) + (start2_byte
- end1_byte
);
4211 for (marker
= BUF_MARKERS (current_buffer
); marker
; marker
= marker
->next
)
4213 mpos
= marker
->bytepos
;
4214 if (mpos
>= start1_byte
&& mpos
< end2_byte
)
4216 if (mpos
< end1_byte
)
4218 else if (mpos
< start2_byte
)
4222 marker
->bytepos
= mpos
;
4224 mpos
= marker
->charpos
;
4225 if (mpos
>= start1
&& mpos
< end2
)
4229 else if (mpos
< start2
)
4234 marker
->charpos
= mpos
;
4238 DEFUN ("transpose-regions", Ftranspose_regions
, Stranspose_regions
, 4, 5, 0,
4239 doc
: /* Transpose region STARTR1 to ENDR1 with STARTR2 to ENDR2.
4240 The regions should not be overlapping, because the size of the buffer is
4241 never changed in a transposition.
4243 Optional fifth arg LEAVE-MARKERS, if non-nil, means don't update
4244 any markers that happen to be located in the regions.
4246 Transposing beyond buffer boundaries is an error. */)
4247 (Lisp_Object startr1
, Lisp_Object endr1
, Lisp_Object startr2
, Lisp_Object endr2
, Lisp_Object leave_markers
)
4249 register EMACS_INT start1
, end1
, start2
, end2
;
4250 EMACS_INT start1_byte
, start2_byte
, len1_byte
, len2_byte
;
4251 EMACS_INT gap
, len1
, len_mid
, len2
;
4252 unsigned char *start1_addr
, *start2_addr
, *temp
;
4254 INTERVAL cur_intv
, tmp_interval1
, tmp_interval_mid
, tmp_interval2
, tmp_interval3
;
4257 XSETBUFFER (buf
, current_buffer
);
4258 cur_intv
= BUF_INTERVALS (current_buffer
);
4260 validate_region (&startr1
, &endr1
);
4261 validate_region (&startr2
, &endr2
);
4263 start1
= XFASTINT (startr1
);
4264 end1
= XFASTINT (endr1
);
4265 start2
= XFASTINT (startr2
);
4266 end2
= XFASTINT (endr2
);
4269 /* Swap the regions if they're reversed. */
4272 register EMACS_INT glumph
= start1
;
4280 len1
= end1
- start1
;
4281 len2
= end2
- start2
;
4284 error ("Transposed regions overlap");
4285 else if (start1
== end1
|| start2
== end2
)
4286 error ("Transposed region has length 0");
4288 /* The possibilities are:
4289 1. Adjacent (contiguous) regions, or separate but equal regions
4290 (no, really equal, in this case!), or
4291 2. Separate regions of unequal size.
4293 The worst case is usually No. 2. It means that (aside from
4294 potential need for getting the gap out of the way), there also
4295 needs to be a shifting of the text between the two regions. So
4296 if they are spread far apart, we are that much slower... sigh. */
4298 /* It must be pointed out that the really studly thing to do would
4299 be not to move the gap at all, but to leave it in place and work
4300 around it if necessary. This would be extremely efficient,
4301 especially considering that people are likely to do
4302 transpositions near where they are working interactively, which
4303 is exactly where the gap would be found. However, such code
4304 would be much harder to write and to read. So, if you are
4305 reading this comment and are feeling squirrely, by all means have
4306 a go! I just didn't feel like doing it, so I will simply move
4307 the gap the minimum distance to get it out of the way, and then
4308 deal with an unbroken array. */
4310 /* Make sure the gap won't interfere, by moving it out of the text
4311 we will operate on. */
4312 if (start1
< gap
&& gap
< end2
)
4314 if (gap
- start1
< end2
- gap
)
4320 start1_byte
= CHAR_TO_BYTE (start1
);
4321 start2_byte
= CHAR_TO_BYTE (start2
);
4322 len1_byte
= CHAR_TO_BYTE (end1
) - start1_byte
;
4323 len2_byte
= CHAR_TO_BYTE (end2
) - start2_byte
;
4325 #ifdef BYTE_COMBINING_DEBUG
4328 if (count_combining_before (BYTE_POS_ADDR (start2_byte
),
4329 len2_byte
, start1
, start1_byte
)
4330 || count_combining_before (BYTE_POS_ADDR (start1_byte
),
4331 len1_byte
, end2
, start2_byte
+ len2_byte
)
4332 || count_combining_after (BYTE_POS_ADDR (start1_byte
),
4333 len1_byte
, end2
, start2_byte
+ len2_byte
))
4338 if (count_combining_before (BYTE_POS_ADDR (start2_byte
),
4339 len2_byte
, start1
, start1_byte
)
4340 || count_combining_before (BYTE_POS_ADDR (start1_byte
),
4341 len1_byte
, start2
, start2_byte
)
4342 || count_combining_after (BYTE_POS_ADDR (start2_byte
),
4343 len2_byte
, end1
, start1_byte
+ len1_byte
)
4344 || count_combining_after (BYTE_POS_ADDR (start1_byte
),
4345 len1_byte
, end2
, start2_byte
+ len2_byte
))
4350 /* Hmmm... how about checking to see if the gap is large
4351 enough to use as the temporary storage? That would avoid an
4352 allocation... interesting. Later, don't fool with it now. */
4354 /* Working without memmove, for portability (sigh), so must be
4355 careful of overlapping subsections of the array... */
4357 if (end1
== start2
) /* adjacent regions */
4359 modify_region (current_buffer
, start1
, end2
, 0);
4360 record_change (start1
, len1
+ len2
);
4362 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
4363 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
4364 /* Don't use Fset_text_properties: that can cause GC, which can
4365 clobber objects stored in the tmp_intervals. */
4366 tmp_interval3
= validate_interval_range (buf
, &startr1
, &endr2
, 0);
4367 if (!NULL_INTERVAL_P (tmp_interval3
))
4368 set_text_properties_1 (startr1
, endr2
, Qnil
, buf
, tmp_interval3
);
4370 /* First region smaller than second. */
4371 if (len1_byte
< len2_byte
)
4375 SAFE_ALLOCA (temp
, unsigned char *, len2_byte
);
4377 /* Don't precompute these addresses. We have to compute them
4378 at the last minute, because the relocating allocator might
4379 have moved the buffer around during the xmalloc. */
4380 start1_addr
= BYTE_POS_ADDR (start1_byte
);
4381 start2_addr
= BYTE_POS_ADDR (start2_byte
);
4383 memcpy (temp
, start2_addr
, len2_byte
);
4384 memcpy (start1_addr
+ len2_byte
, start1_addr
, len1_byte
);
4385 memcpy (start1_addr
, temp
, len2_byte
);
4389 /* First region not smaller than second. */
4393 SAFE_ALLOCA (temp
, unsigned char *, len1_byte
);
4394 start1_addr
= BYTE_POS_ADDR (start1_byte
);
4395 start2_addr
= BYTE_POS_ADDR (start2_byte
);
4396 memcpy (temp
, start1_addr
, len1_byte
);
4397 memcpy (start1_addr
, start2_addr
, len2_byte
);
4398 memcpy (start1_addr
+ len2_byte
, temp
, len1_byte
);
4401 graft_intervals_into_buffer (tmp_interval1
, start1
+ len2
,
4402 len1
, current_buffer
, 0);
4403 graft_intervals_into_buffer (tmp_interval2
, start1
,
4404 len2
, current_buffer
, 0);
4405 update_compositions (start1
, start1
+ len2
, CHECK_BORDER
);
4406 update_compositions (start1
+ len2
, end2
, CHECK_TAIL
);
4408 /* Non-adjacent regions, because end1 != start2, bleagh... */
4411 len_mid
= start2_byte
- (start1_byte
+ len1_byte
);
4413 if (len1_byte
== len2_byte
)
4414 /* Regions are same size, though, how nice. */
4418 modify_region (current_buffer
, start1
, end1
, 0);
4419 modify_region (current_buffer
, start2
, end2
, 0);
4420 record_change (start1
, len1
);
4421 record_change (start2
, len2
);
4422 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
4423 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
4425 tmp_interval3
= validate_interval_range (buf
, &startr1
, &endr1
, 0);
4426 if (!NULL_INTERVAL_P (tmp_interval3
))
4427 set_text_properties_1 (startr1
, endr1
, Qnil
, buf
, tmp_interval3
);
4429 tmp_interval3
= validate_interval_range (buf
, &startr2
, &endr2
, 0);
4430 if (!NULL_INTERVAL_P (tmp_interval3
))
4431 set_text_properties_1 (startr2
, endr2
, Qnil
, buf
, tmp_interval3
);
4433 SAFE_ALLOCA (temp
, unsigned char *, len1_byte
);
4434 start1_addr
= BYTE_POS_ADDR (start1_byte
);
4435 start2_addr
= BYTE_POS_ADDR (start2_byte
);
4436 memcpy (temp
, start1_addr
, len1_byte
);
4437 memcpy (start1_addr
, start2_addr
, len2_byte
);
4438 memcpy (start2_addr
, temp
, len1_byte
);
4441 graft_intervals_into_buffer (tmp_interval1
, start2
,
4442 len1
, current_buffer
, 0);
4443 graft_intervals_into_buffer (tmp_interval2
, start1
,
4444 len2
, current_buffer
, 0);
4447 else if (len1_byte
< len2_byte
) /* Second region larger than first */
4448 /* Non-adjacent & unequal size, area between must also be shifted. */
4452 modify_region (current_buffer
, start1
, end2
, 0);
4453 record_change (start1
, (end2
- start1
));
4454 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
4455 tmp_interval_mid
= copy_intervals (cur_intv
, end1
, len_mid
);
4456 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
4458 tmp_interval3
= validate_interval_range (buf
, &startr1
, &endr2
, 0);
4459 if (!NULL_INTERVAL_P (tmp_interval3
))
4460 set_text_properties_1 (startr1
, endr2
, Qnil
, buf
, tmp_interval3
);
4462 /* holds region 2 */
4463 SAFE_ALLOCA (temp
, unsigned char *, len2_byte
);
4464 start1_addr
= BYTE_POS_ADDR (start1_byte
);
4465 start2_addr
= BYTE_POS_ADDR (start2_byte
);
4466 memcpy (temp
, start2_addr
, len2_byte
);
4467 memcpy (start1_addr
+ len_mid
+ len2_byte
, start1_addr
, len1_byte
);
4468 memmove (start1_addr
+ len2_byte
, start1_addr
+ len1_byte
, len_mid
);
4469 memcpy (start1_addr
, temp
, len2_byte
);
4472 graft_intervals_into_buffer (tmp_interval1
, end2
- len1
,
4473 len1
, current_buffer
, 0);
4474 graft_intervals_into_buffer (tmp_interval_mid
, start1
+ len2
,
4475 len_mid
, current_buffer
, 0);
4476 graft_intervals_into_buffer (tmp_interval2
, start1
,
4477 len2
, current_buffer
, 0);
4480 /* Second region smaller than first. */
4484 record_change (start1
, (end2
- start1
));
4485 modify_region (current_buffer
, start1
, end2
, 0);
4487 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
4488 tmp_interval_mid
= copy_intervals (cur_intv
, end1
, len_mid
);
4489 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
4491 tmp_interval3
= validate_interval_range (buf
, &startr1
, &endr2
, 0);
4492 if (!NULL_INTERVAL_P (tmp_interval3
))
4493 set_text_properties_1 (startr1
, endr2
, Qnil
, buf
, tmp_interval3
);
4495 /* holds region 1 */
4496 SAFE_ALLOCA (temp
, unsigned char *, len1_byte
);
4497 start1_addr
= BYTE_POS_ADDR (start1_byte
);
4498 start2_addr
= BYTE_POS_ADDR (start2_byte
);
4499 memcpy (temp
, start1_addr
, len1_byte
);
4500 memcpy (start1_addr
, start2_addr
, len2_byte
);
4501 memcpy (start1_addr
+ len2_byte
, start1_addr
+ len1_byte
, len_mid
);
4502 memcpy (start1_addr
+ len2_byte
+ len_mid
, temp
, len1_byte
);
4505 graft_intervals_into_buffer (tmp_interval1
, end2
- len1
,
4506 len1
, current_buffer
, 0);
4507 graft_intervals_into_buffer (tmp_interval_mid
, start1
+ len2
,
4508 len_mid
, current_buffer
, 0);
4509 graft_intervals_into_buffer (tmp_interval2
, start1
,
4510 len2
, current_buffer
, 0);
4513 update_compositions (start1
, start1
+ len2
, CHECK_BORDER
);
4514 update_compositions (end2
- len1
, end2
, CHECK_BORDER
);
4517 /* When doing multiple transpositions, it might be nice
4518 to optimize this. Perhaps the markers in any one buffer
4519 should be organized in some sorted data tree. */
4520 if (NILP (leave_markers
))
4522 transpose_markers (start1
, end1
, start2
, end2
,
4523 start1_byte
, start1_byte
+ len1_byte
,
4524 start2_byte
, start2_byte
+ len2_byte
);
4525 fix_start_end_in_overlays (start1
, end2
);
4528 signal_after_change (start1
, end2
- start1
, end2
- start1
);
4534 syms_of_editfns (void)
4539 Qbuffer_access_fontify_functions
4540 = intern_c_string ("buffer-access-fontify-functions");
4541 staticpro (&Qbuffer_access_fontify_functions
);
4543 DEFVAR_LISP ("inhibit-field-text-motion", Vinhibit_field_text_motion
,
4544 doc
: /* Non-nil means text motion commands don't notice fields. */);
4545 Vinhibit_field_text_motion
= Qnil
;
4547 DEFVAR_LISP ("buffer-access-fontify-functions",
4548 Vbuffer_access_fontify_functions
,
4549 doc
: /* List of functions called by `buffer-substring' to fontify if necessary.
4550 Each function is called with two arguments which specify the range
4551 of the buffer being accessed. */);
4552 Vbuffer_access_fontify_functions
= Qnil
;
4556 obuf
= Fcurrent_buffer ();
4557 /* Do this here, because init_buffer_once is too early--it won't work. */
4558 Fset_buffer (Vprin1_to_string_buffer
);
4559 /* Make sure buffer-access-fontify-functions is nil in this buffer. */
4560 Fset (Fmake_local_variable (intern_c_string ("buffer-access-fontify-functions")),
4565 DEFVAR_LISP ("buffer-access-fontified-property",
4566 Vbuffer_access_fontified_property
,
4567 doc
: /* Property which (if non-nil) indicates text has been fontified.
4568 `buffer-substring' need not call the `buffer-access-fontify-functions'
4569 functions if all the text being accessed has this property. */);
4570 Vbuffer_access_fontified_property
= Qnil
;
4572 DEFVAR_LISP ("system-name", Vsystem_name
,
4573 doc
: /* The host name of the machine Emacs is running on. */);
4575 DEFVAR_LISP ("user-full-name", Vuser_full_name
,
4576 doc
: /* The full name of the user logged in. */);
4578 DEFVAR_LISP ("user-login-name", Vuser_login_name
,
4579 doc
: /* The user's name, taken from environment variables if possible. */);
4581 DEFVAR_LISP ("user-real-login-name", Vuser_real_login_name
,
4582 doc
: /* The user's name, based upon the real uid only. */);
4584 DEFVAR_LISP ("operating-system-release", Voperating_system_release
,
4585 doc
: /* The release of the operating system Emacs is running on. */);
4587 defsubr (&Spropertize
);
4588 defsubr (&Schar_equal
);
4589 defsubr (&Sgoto_char
);
4590 defsubr (&Sstring_to_char
);
4591 defsubr (&Schar_to_string
);
4592 defsubr (&Sbyte_to_string
);
4593 defsubr (&Sbuffer_substring
);
4594 defsubr (&Sbuffer_substring_no_properties
);
4595 defsubr (&Sbuffer_string
);
4597 defsubr (&Spoint_marker
);
4598 defsubr (&Smark_marker
);
4600 defsubr (&Sregion_beginning
);
4601 defsubr (&Sregion_end
);
4603 staticpro (&Qfield
);
4604 Qfield
= intern_c_string ("field");
4605 staticpro (&Qboundary
);
4606 Qboundary
= intern_c_string ("boundary");
4607 defsubr (&Sfield_beginning
);
4608 defsubr (&Sfield_end
);
4609 defsubr (&Sfield_string
);
4610 defsubr (&Sfield_string_no_properties
);
4611 defsubr (&Sdelete_field
);
4612 defsubr (&Sconstrain_to_field
);
4614 defsubr (&Sline_beginning_position
);
4615 defsubr (&Sline_end_position
);
4617 /* defsubr (&Smark); */
4618 /* defsubr (&Sset_mark); */
4619 defsubr (&Ssave_excursion
);
4620 defsubr (&Ssave_current_buffer
);
4622 defsubr (&Sbufsize
);
4623 defsubr (&Spoint_max
);
4624 defsubr (&Spoint_min
);
4625 defsubr (&Spoint_min_marker
);
4626 defsubr (&Spoint_max_marker
);
4627 defsubr (&Sgap_position
);
4628 defsubr (&Sgap_size
);
4629 defsubr (&Sposition_bytes
);
4630 defsubr (&Sbyte_to_position
);
4636 defsubr (&Sfollowing_char
);
4637 defsubr (&Sprevious_char
);
4638 defsubr (&Schar_after
);
4639 defsubr (&Schar_before
);
4641 defsubr (&Sinsert_before_markers
);
4642 defsubr (&Sinsert_and_inherit
);
4643 defsubr (&Sinsert_and_inherit_before_markers
);
4644 defsubr (&Sinsert_char
);
4645 defsubr (&Sinsert_byte
);
4647 defsubr (&Suser_login_name
);
4648 defsubr (&Suser_real_login_name
);
4649 defsubr (&Suser_uid
);
4650 defsubr (&Suser_real_uid
);
4651 defsubr (&Suser_full_name
);
4652 defsubr (&Semacs_pid
);
4653 defsubr (&Scurrent_time
);
4654 defsubr (&Sget_internal_run_time
);
4655 defsubr (&Sformat_time_string
);
4656 defsubr (&Sfloat_time
);
4657 defsubr (&Sdecode_time
);
4658 defsubr (&Sencode_time
);
4659 defsubr (&Scurrent_time_string
);
4660 defsubr (&Scurrent_time_zone
);
4661 defsubr (&Sset_time_zone_rule
);
4662 defsubr (&Ssystem_name
);
4663 defsubr (&Smessage
);
4664 defsubr (&Smessage_box
);
4665 defsubr (&Smessage_or_box
);
4666 defsubr (&Scurrent_message
);
4669 defsubr (&Sinsert_buffer_substring
);
4670 defsubr (&Scompare_buffer_substrings
);
4671 defsubr (&Ssubst_char_in_region
);
4672 defsubr (&Stranslate_region_internal
);
4673 defsubr (&Sdelete_region
);
4674 defsubr (&Sdelete_and_extract_region
);
4676 defsubr (&Snarrow_to_region
);
4677 defsubr (&Ssave_restriction
);
4678 defsubr (&Stranspose_regions
);