/* Buffer insertion/deletion and gap motion for GNU Emacs.
- Copyright (C) 1985, 86,93,94,95,97,98, 1999 Free Software Foundation, Inc.
+ Copyright (C) 1985, 86,93,94,95,97,98, 1999, 2000, 01, 2003
+ Free Software Foundation, Inc.
This file is part of GNU Emacs.
#include "lisp.h"
#include "intervals.h"
#include "buffer.h"
-#include "charset.h"
+#include "character.h"
#include "window.h"
#include "blockinput.h"
#include "region-cache.h"
#define NULL 0
#endif
-#define min(x, y) ((x) < (y) ? (x) : (y))
-#define max(x, y) ((x) > (y) ? (x) : (y))
-
static void insert_from_string_1 P_ ((Lisp_Object, int, int, int, int, int, int));
static void insert_from_buffer_1 ();
static void gap_left P_ ((int, int, int));
/* Buffer which combine_after_change_list is about. */
Lisp_Object combine_after_change_buffer;
+
+Lisp_Object Qinhibit_modification_hooks;
+
\f
/* Check all markers in the current buffer, looking for something invalid. */
void
check_markers ()
{
- register Lisp_Object tail;
+ register struct Lisp_Marker *tail;
int multibyte = ! NILP (current_buffer->enable_multibyte_characters);
- tail = BUF_MARKERS (current_buffer);
-
- while (! NILP (tail))
+ for (tail = BUF_MARKERS (current_buffer); tail; tail = tail->next)
{
- if (XMARKER (tail)->buffer->text != current_buffer->text)
+ if (tail->buffer->text != current_buffer->text)
abort ();
- if (XMARKER (tail)->charpos > Z)
+ if (tail->charpos > Z)
abort ();
- if (XMARKER (tail)->bytepos > Z_BYTE)
+ if (tail->bytepos > Z_BYTE)
abort ();
- if (multibyte && ! CHAR_HEAD_P (FETCH_BYTE (XMARKER (tail)->bytepos)))
+ if (multibyte && ! CHAR_HEAD_P (FETCH_BYTE (tail->bytepos)))
abort ();
-
- tail = XMARKER (tail)->chain;
}
}
\f
register struct Lisp_Marker *m;
register int charpos;
- marker = BUF_MARKERS (current_buffer);
-
- while (!NILP (marker))
+ for (m = BUF_MARKERS (current_buffer); m; m = m->next)
{
- m = XMARKER (marker);
charpos = m->charpos;
if (charpos > Z)
m->charpos -= to - from;
m->bytepos -= to_byte - from_byte;
}
-
/* Here's the case where a marker is inside text being deleted. */
else if (charpos > from)
{
- record_marker_adjustment (marker, from - charpos);
+ if (! m->insertion_type)
+ { /* Normal markers will end up at the beginning of the
+ re-inserted text after undoing a deletion, and must be
+ adjusted to move them to the correct place. */
+ XSETMISC (marker, m);
+ record_marker_adjustment (marker, from - charpos);
+ }
+ else if (charpos < to)
+ { /* Before-insertion markers will automatically move forward
+ upon re-inserting the deleted text, so we have to arrange
+ for them to move backward to the correct position. */
+ XSETMISC (marker, m);
+ record_marker_adjustment (marker, charpos - to);
+ }
m->charpos = from;
m->bytepos = from_byte;
}
-
- marker = m->chain;
+ /* Here's the case where a before-insertion marker is immediately
+ before the deleted region. */
+ else if (charpos == from && m->insertion_type)
+ {
+ /* Undoing the change uses normal insertion, which will
+ incorrectly make MARKER move forward, so we arrange for it
+ to then move backward to the correct place at the beginning
+ of the deleted region. */
+ XSETMISC (marker, m);
+ record_marker_adjustment (marker, to - from);
+ }
}
}
register int from, from_byte, to, to_byte;
int before_markers;
{
- Lisp_Object marker;
+ struct Lisp_Marker *m;
int adjusted = 0;
int nchars = to - from;
int nbytes = to_byte - from_byte;
- marker = BUF_MARKERS (current_buffer);
-
- while (!NILP (marker))
+ for (m = BUF_MARKERS (current_buffer); m; m = m->next)
{
- register struct Lisp_Marker *m = XMARKER (marker);
-
/* In a single-byte buffer, a marker's two positions must be
equal. */
if (Z == Z_BYTE)
m->bytepos += nbytes;
m->charpos += nchars;
}
-
- marker = m->chain;
}
/* Adjusting only markers whose insertion-type is t may result in
- disordered overlays in the slot `overlays_before'. */
+ - disordered start and end in overlays, and
+ - disordered overlays in the slot `overlays_before' of current_buffer. */
if (adjusted)
- fix_overlays_before (current_buffer, from, to);
+ {
+ fix_start_end_in_overlays(from, to);
+ fix_overlays_before (current_buffer, from, to);
+ }
}
/* Adjust point for an insertion of NBYTES bytes, which are NCHARS characters.
new_chars, new_bytes)
int from, from_byte, old_chars, old_bytes, new_chars, new_bytes;
{
- Lisp_Object marker = BUF_MARKERS (current_buffer);
+ register struct Lisp_Marker *m;
int prev_to_byte = from_byte + old_bytes;
int diff_chars = new_chars - old_chars;
int diff_bytes = new_bytes - old_bytes;
- while (!NILP (marker))
+ for (m = BUF_MARKERS (current_buffer); m; m = m->next)
{
- register struct Lisp_Marker *m = XMARKER (marker);
-
if (m->bytepos >= prev_to_byte)
{
m->charpos += diff_chars;
m->charpos = from;
m->bytepos = from_byte;
}
-
- marker = m->chain;
}
CHECK_MARKERS ();
/* Make the gap NBYTES_ADDED bytes longer. */
void
-make_gap (nbytes_added)
+make_gap_larger (nbytes_added)
int nbytes_added;
{
- unsigned char *result;
Lisp_Object tem;
int real_gap_loc;
int real_gap_loc_byte;
/* Don't allow a buffer size that won't fit in an int
even if it will fit in a Lisp integer.
- That won't work because so many places use `int'. */
-
- if (Z_BYTE - BEG_BYTE + GAP_SIZE + nbytes_added
- >= ((unsigned) 1 << (min (BITS_PER_INT, VALBITS) - 1)))
- error ("Buffer exceeds maximum size");
+ That won't work because so many places use `int'.
- BLOCK_INPUT;
- /* We allocate extra 1-byte `\0' at the tail for anchoring a search. */
- result = BUFFER_REALLOC (BEG_ADDR, (Z_BYTE - BEG_BYTE
- + GAP_SIZE + nbytes_added + 1));
+ Make sure we don't introduce overflows in the calculation. */
- if (result == 0)
- {
- UNBLOCK_INPUT;
- memory_full ();
- }
+ if (Z_BYTE - BEG_BYTE + GAP_SIZE
+ >= (((EMACS_INT) 1 << (min (VALBITS, BITS_PER_INT) - 1)) - 1
+ - nbytes_added))
+ error ("Buffer exceeds maximum size");
- /* We can't unblock until the new address is properly stored. */
- BEG_ADDR = result;
- UNBLOCK_INPUT;
+ enlarge_buffer_text (current_buffer, nbytes_added);
/* Prevent quitting in move_gap. */
tem = Vinhibit_quit;
Vinhibit_quit = tem;
}
+
+
+/* Make the gap NBYTES_REMOVED bytes shorter. */
+
+void
+make_gap_smaller (nbytes_removed)
+ int nbytes_removed;
+{
+ Lisp_Object tem;
+ int real_gap_loc;
+ int real_gap_loc_byte;
+ int real_Z;
+ int real_Z_byte;
+ int real_beg_unchanged;
+ int new_gap_size;
+
+ /* Make sure the gap is at least 20 bytes. */
+ if (GAP_SIZE - nbytes_removed < 20)
+ nbytes_removed = GAP_SIZE - 20;
+
+ /* Prevent quitting in move_gap. */
+ tem = Vinhibit_quit;
+ Vinhibit_quit = Qt;
+
+ real_gap_loc = GPT;
+ real_gap_loc_byte = GPT_BYTE;
+ new_gap_size = GAP_SIZE - nbytes_removed;
+ real_Z = Z;
+ real_Z_byte = Z_BYTE;
+ real_beg_unchanged = BEG_UNCHANGED;
+
+ /* Pretend that the last unwanted part of the gap is the entire gap,
+ and that the first desired part of the gap is part of the buffer
+ text. */
+ bzero (GPT_ADDR, new_gap_size);
+ GPT += new_gap_size;
+ GPT_BYTE += new_gap_size;
+ Z += new_gap_size;
+ Z_BYTE += new_gap_size;
+ GAP_SIZE = nbytes_removed;
+
+ /* Move the unwanted pretend gap to the end of the buffer. This
+ adjusts the markers properly too. */
+ gap_right (Z, Z_BYTE);
+
+ enlarge_buffer_text (current_buffer, -nbytes_removed);
+
+ /* Now restore the desired gap. */
+ GAP_SIZE = new_gap_size;
+ GPT = real_gap_loc;
+ GPT_BYTE = real_gap_loc_byte;
+ Z = real_Z;
+ Z_BYTE = real_Z_byte;
+ BEG_UNCHANGED = real_beg_unchanged;
+
+ /* Put an anchor. */
+ *(Z_ADDR) = 0;
+
+ Vinhibit_quit = tem;
+}
+
+void
+make_gap (nbytes_added)
+ int nbytes_added;
+{
+ if (nbytes_added >= 0)
+ make_gap_larger (nbytes_added);
+#if defined USE_MMAP_FOR_BUFFERS || defined REL_ALLOC || defined DOUG_LEA_MALLOC
+ else
+ make_gap_smaller (-nbytes_added);
+#endif
+}
\f
/* Copy NBYTES bytes of text from FROM_ADDR to TO_ADDR.
FROM_MULTIBYTE says whether the incoming text is multibyte.
int
copy_text (from_addr, to_addr, nbytes,
from_multibyte, to_multibyte)
- unsigned char *from_addr;
+ const unsigned char *from_addr;
unsigned char *to_addr;
int nbytes;
int from_multibyte, to_multibyte;
int bytes_left = nbytes;
Lisp_Object tbl = Qnil;
- /* We set the variable tbl to the reverse table of
- Vnonascii_translation_table in advance. */
- if (CHAR_TABLE_P (Vnonascii_translation_table))
- {
- tbl = Fchar_table_extra_slot (Vnonascii_translation_table,
- make_number (0));
- if (!CHAR_TABLE_P (tbl))
- tbl = Qnil;
- }
-
- /* Convert multibyte to single byte. */
while (bytes_left > 0)
{
int thislen, c;
c = STRING_CHAR_AND_LENGTH (from_addr, bytes_left, thislen);
- if (!SINGLE_BYTE_CHAR_P (c))
+ if (!ASCII_CHAR_P (c))
c = multibyte_char_to_unibyte (c, tbl);
*to_addr++ = c;
from_addr += thislen;
int
count_size_as_multibyte (ptr, nbytes)
- unsigned char *ptr;
+ const unsigned char *ptr;
int nbytes;
{
int i;
void
insert (string, nbytes)
- register unsigned char *string;
+ register const unsigned char *string;
register int nbytes;
{
if (nbytes > 0)
void
insert_and_inherit (string, nbytes)
- register unsigned char *string;
+ register const unsigned char *string;
register int nbytes;
{
if (nbytes > 0)
void
insert_string (s)
- char *s;
+ const char *s;
{
insert (s, strlen (s));
}
void
insert_before_markers (string, nbytes)
- unsigned char *string;
+ const unsigned char *string;
register int nbytes;
{
if (nbytes > 0)
void
insert_before_markers_and_inherit (string, nbytes)
- unsigned char *string;
+ const unsigned char *string;
register int nbytes;
{
if (nbytes > 0)
void
insert_1 (string, nbytes, inherit, prepare, before_markers)
- register unsigned char *string;
+ register const unsigned char *string;
register int nbytes;
int inherit, prepare, before_markers;
{
int
count_combining_before (string, length, pos, pos_byte)
- unsigned char *string;
+ const unsigned char *string;
int length;
int pos, pos_byte;
{
int len, combining_bytes;
- unsigned char *p;
+ const unsigned char *p;
if (NILP (current_buffer->enable_multibyte_characters))
return 0;
int
count_combining_after (string, length, pos, pos_byte)
- unsigned char *string;
+ const unsigned char *string;
int length;
int pos, pos_byte;
{
void
insert_1_both (string, nchars, nbytes, inherit, prepare, before_markers)
- register unsigned char *string;
+ register const unsigned char *string;
register int nchars, nbytes;
int inherit, prepare, before_markers;
{
+ if (nchars == 0)
+ return;
+
if (NILP (current_buffer->enable_multibyte_characters))
nchars = nbytes;
if (GPT_BYTE < GPT)
abort ();
+ /* The insert may have been in the unchanged region, so check again. */
+ if (Z - GPT < END_UNCHANGED)
+ END_UNCHANGED = Z - GPT;
+
adjust_overlays_for_insert (PT, nchars);
adjust_markers_for_insert (PT, PT_BYTE,
PT + nchars, PT_BYTE + nbytes,
outgoing_nbytes = nchars;
else if (! STRING_MULTIBYTE (string))
outgoing_nbytes
- = count_size_as_multibyte (&XSTRING (string)->data[pos_byte],
+ = count_size_as_multibyte (SDATA (string) + pos_byte,
nbytes);
GCPRO1 (string);
/* Copy the string text into the buffer, perhaps converting
between single-byte and multibyte. */
- copy_text (XSTRING (string)->data + pos_byte, GPT_ADDR, nbytes,
+ copy_text (SDATA (string) + pos_byte, GPT_ADDR, nbytes,
STRING_MULTIBYTE (string),
! NILP (current_buffer->enable_multibyte_characters));
if (GPT_BYTE < GPT)
abort ();
+ /* The insert may have been in the unchanged region, so check again. */
+ if (Z - GPT < END_UNCHANGED)
+ END_UNCHANGED = Z - GPT;
+
adjust_overlays_for_insert (PT, nchars);
adjust_markers_for_insert (PT, PT_BYTE, PT + nchars,
PT_BYTE + outgoing_nbytes,
offset_intervals (current_buffer, PT, nchars);
- intervals = XSTRING (string)->intervals;
+ intervals = STRING_INTERVALS (string);
/* Get the intervals for the part of the string we are inserting. */
- if (nbytes < STRING_BYTES (XSTRING (string)))
+ if (nbytes < SBYTES (string))
intervals = copy_intervals (intervals, pos, nchars);
-
+
/* Insert those intervals. */
graft_intervals_into_buffer (intervals, PT, nchars,
current_buffer, inherit);
adjust_point (nchars, outgoing_nbytes);
+
+ CHECK_MARKERS ();
+}
+\f
+/* Insert a sequence of NCHARS chars which occupy NBYTES bytes
+ starting at GPT_ADDR. */
+
+void
+insert_from_gap (nchars, nbytes)
+ register int nchars, nbytes;
+{
+ if (NILP (current_buffer->enable_multibyte_characters))
+ nchars = nbytes;
+
+ record_insert (GPT, nchars);
+ MODIFF++;
+
+ GAP_SIZE -= nbytes;
+ GPT += nchars;
+ ZV += nchars;
+ Z += nchars;
+ GPT_BYTE += nbytes;
+ ZV_BYTE += nbytes;
+ Z_BYTE += nbytes;
+ if (GAP_SIZE > 0) *(GPT_ADDR) = 0; /* Put an anchor. */
+
+ if (GPT_BYTE < GPT)
+ abort ();
+
+ adjust_overlays_for_insert (GPT - nchars, nchars);
+ adjust_markers_for_insert (GPT - nchars, GPT_BYTE - nbytes,
+ GPT, GPT_BYTE, 0);
+
+ if (BUF_INTERVALS (current_buffer) != 0)
+ {
+ offset_intervals (current_buffer, GPT - nchars, nchars);
+ graft_intervals_into_buffer (NULL_INTERVAL, GPT - nchars, nchars,
+ current_buffer, 0);
+ }
+
+ if (GPT - nchars < PT)
+ adjust_point (nchars, nbytes);
+
+ CHECK_MARKERS ();
}
\f
/* Insert text from BUF, NCHARS characters starting at CHARPOS, into the
if (chunk < incoming_nbytes)
outgoing_after_gap
- = count_size_as_multibyte (BUF_BYTE_ADDRESS (buf,
+ = count_size_as_multibyte (BUF_BYTE_ADDRESS (buf,
from_byte + chunk),
incoming_nbytes - chunk);
outgoing_nbytes = outgoing_before_gap + outgoing_after_gap;
}
-
+
/* Make sure point-max won't overflow after this insertion. */
XSETINT (temp, outgoing_nbytes + Z);
if (outgoing_nbytes + Z != XINT (temp))
if (GPT_BYTE < GPT)
abort ();
+ /* The insert may have been in the unchanged region, so check again. */
+ if (Z - GPT < END_UNCHANGED)
+ END_UNCHANGED = Z - GPT;
+
adjust_overlays_for_insert (PT, nchars);
adjust_markers_for_insert (PT, PT_BYTE, PT + nchars,
PT_BYTE + outgoing_nbytes,
from += nchars;
intervals = copy_intervals (intervals, from, nchars);
}
-
+
/* Insert those intervals. */
graft_intervals_into_buffer (intervals, PT, nchars, current_buffer, inherit);
if (STRINGP (prev_text))
{
- nchars_del = XSTRING (prev_text)->size;
- nbytes_del = STRING_BYTES (XSTRING (prev_text));
+ nchars_del = SCHARS (prev_text);
+ nbytes_del = SBYTES (prev_text);
}
/* Update various buffer positions for the new text. */
MODIFF++;
}
+/* Like adjust_after_replace, but doesn't require PREV_TEXT.
+ This is for use when undo is not enabled in the current buffer. */
+
+void
+adjust_after_replace_noundo (from, from_byte, nchars_del, nbytes_del, len, len_byte)
+ int from, from_byte, nchars_del, nbytes_del, len, len_byte;
+{
+#ifdef BYTE_COMBINING_DEBUG
+ if (count_combining_before (GPT_ADDR, len_byte, from, from_byte)
+ || count_combining_after (GPT_ADDR, len_byte, from, from_byte))
+ abort ();
+#endif
+
+ /* Update various buffer positions for the new text. */
+ GAP_SIZE -= len_byte;
+ ZV += len; Z+= len;
+ ZV_BYTE += len_byte; Z_BYTE += len_byte;
+ GPT += len; GPT_BYTE += len_byte;
+ if (GAP_SIZE > 0) *(GPT_ADDR) = 0; /* Put an anchor. */
+
+ if (nchars_del > 0)
+ adjust_markers_for_replace (from, from_byte, nchars_del, nbytes_del,
+ len, len_byte);
+ else
+ adjust_markers_for_insert (from, from_byte,
+ from + len, from_byte + len_byte, 0);
+
+ if (len > nchars_del)
+ adjust_overlays_for_insert (from, len - nchars_del);
+ else if (len < nchars_del)
+ adjust_overlays_for_delete (from, nchars_del - len);
+ if (BUF_INTERVALS (current_buffer) != 0)
+ {
+ offset_intervals (current_buffer, from, len - nchars_del);
+ }
+
+ if (from < PT)
+ adjust_point (len - nchars_del, len_byte - nbytes_del);
+
+ /* As byte combining will decrease Z, we must check this again. */
+ if (Z - GPT < END_UNCHANGED)
+ END_UNCHANGED = Z - GPT;
+
+ CHECK_MARKERS ();
+
+ if (len == 0)
+ evaporate_overlays (from);
+ MODIFF++;
+}
+
/* Record undo information, adjust markers and position keepers for an
insertion of a text from FROM (FROM_BYTE) to TO (TO_BYTE). The
text already exists in the current buffer but character length (TO
Lisp_Object new;
int from, to, prepare, inherit, markers;
{
- int inschars = XSTRING (new)->size;
- int insbytes = STRING_BYTES (XSTRING (new));
+ int inschars = SCHARS (new);
+ int insbytes = SBYTES (new);
int from_byte, to_byte;
int nbytes_del, nchars_del;
register Lisp_Object temp;
CHECK_MARKERS ();
GCPRO1 (new);
+ deletion = Qnil;
if (prepare)
{
outgoing_insbytes = inschars;
else if (! STRING_MULTIBYTE (new))
outgoing_insbytes
- = count_size_as_multibyte (XSTRING (new)->data, insbytes);
+ = count_size_as_multibyte (SDATA (new), insbytes);
/* Make sure point-max won't overflow after this insertion. */
XSETINT (temp, Z_BYTE - nbytes_del + insbytes);
if (! EQ (current_buffer->undo_list, Qt))
deletion = make_buffer_string_both (from, from_byte, to, to_byte, 1);
- if (markers)
- /* Relocate all markers pointing into the new, larger gap
- to point at the end of the text before the gap.
- Do this before recording the deletion,
- so that undo handles this after reinserting the text. */
- adjust_markers_for_delete (from, from_byte, to, to_byte);
-
GAP_SIZE += nbytes_del;
ZV -= nchars_del;
Z -= nchars_del;
Z_BYTE -= nbytes_del;
GPT = from;
GPT_BYTE = from_byte;
- *(GPT_ADDR) = 0; /* Put an anchor. */
+ if (GAP_SIZE > 0) *(GPT_ADDR) = 0; /* Put an anchor. */
if (GPT_BYTE < GPT)
abort ();
/* Copy the string text into the buffer, perhaps converting
between single-byte and multibyte. */
- copy_text (XSTRING (new)->data, GPT_ADDR, insbytes,
+ copy_text (SDATA (new), GPT_ADDR, insbytes,
STRING_MULTIBYTE (new),
! NILP (current_buffer->enable_multibyte_characters));
adjusting the markers that bound the overlays. */
adjust_overlays_for_delete (from, nchars_del);
adjust_overlays_for_insert (from, inschars);
+
+ /* Adjust markers for the deletion and the insertion. */
if (markers)
- adjust_markers_for_insert (from, from_byte,
- from + inschars, from_byte + outgoing_insbytes,
- 0);
+ adjust_markers_for_replace (from, from_byte, nchars_del, nbytes_del,
+ inschars, outgoing_insbytes);
offset_intervals (current_buffer, from, inschars - nchars_del);
/* Get the intervals for the part of the string we are inserting--
not including the combined-before bytes. */
- intervals = XSTRING (new)->intervals;
+ intervals = STRING_INTERVALS (new);
/* Insert those intervals. */
graft_intervals_into_buffer (intervals, from, inschars,
current_buffer, inherit);
{
int range_length = to - from;
prepare_to_modify_buffer (from, to, &from);
- to = from + range_length;
+ to = min (ZV, from + range_length);
}
from_byte = CHAR_TO_BYTE (from);
if (old_from != from)
from_byte = CHAR_TO_BYTE (from);
- if (old_to == Z - to)
+ if (to > ZV)
+ {
+ to = ZV;
+ to_byte = ZV_BYTE;
+ }
+ else if (old_to == Z - to)
to_byte = CHAR_TO_BYTE (to);
}
if (old_from != from)
from_byte = CHAR_TO_BYTE (from);
- if (old_to == Z - to)
+ if (to > ZV)
+ {
+ to = ZV;
+ to_byte = ZV_BYTE;
+ }
+ else if (old_to == Z - to)
to_byte = CHAR_TO_BYTE (to);
}
Z -= nchars_del;
GPT = from;
GPT_BYTE = from_byte;
- *(GPT_ADDR) = 0; /* Put an anchor. */
+ if (GAP_SIZE > 0) *(GPT_ADDR) = 0; /* Put an anchor. */
if (GPT_BYTE < GPT)
abort ();
GCPRO1 (preserve_marker);
verify_interval_modification (current_buffer, start, end);
*preserve_ptr = marker_position (preserve_marker);
- unchain_marker (preserve_marker);
+ unchain_marker (XMARKER (preserve_marker));
UNGCPRO;
}
else
if (! NILP (preserve_marker)) \
{ \
*preserve_ptr = marker_position (preserve_marker); \
- unchain_marker (preserve_marker); \
+ unchain_marker (XMARKER (preserve_marker)); \
}
#define PRESERVE_START_END \
call1 (Vrun_hooks, Qfirst_change_hook);
}
- /* Run the before-change-function if any.
- We don't bother "binding" this variable to nil
- because it is obsolete anyway and new code should not use it. */
- if (!NILP (Vbefore_change_function))
- {
- PRESERVE_VALUE;
- PRESERVE_START_END;
- call2 (Vbefore_change_function, FETCH_START, FETCH_END);
- }
-
/* Now run the before-change-functions if any. */
if (!NILP (Vbefore_change_functions))
{
Lisp_Object before_change_functions;
Lisp_Object after_change_functions;
struct gcpro gcpro1, gcpro2;
+ struct buffer *old = current_buffer;
+ struct buffer *new;
PRESERVE_VALUE;
PRESERVE_START_END;
args[2] = FETCH_END;
run_hook_list_with_args (before_change_functions, 3, args);
- /* "Unbind" the variables we "bound" to nil. */
- Vbefore_change_functions = before_change_functions;
- Vafter_change_functions = after_change_functions;
+ /* "Unbind" the variables we "bound" to nil. Beware a
+ buffer-local hook which changes the buffer when run (e.g. W3). */
+ if (old != current_buffer)
+ {
+ new = current_buffer;
+ set_buffer_internal (old);
+ Vbefore_change_functions = before_change_functions;
+ Vafter_change_functions = after_change_functions;
+ set_buffer_internal (new);
+ }
+ else
+ {
+ Vbefore_change_functions = before_change_functions;
+ Vafter_change_functions = after_change_functions;
+ }
UNGCPRO;
}
- if (!NILP (current_buffer->overlays_before)
- || !NILP (current_buffer->overlays_after))
+ if (current_buffer->overlays_before || current_buffer->overlays_after)
{
PRESERVE_VALUE;
report_overlay_modification (FETCH_START, FETCH_END, 0,
and there are no before-change functions,
just record the args that we were going to use. */
if (! NILP (Vcombine_after_change_calls)
- && NILP (Vbefore_change_function) && NILP (Vbefore_change_functions)
- && NILP (current_buffer->overlays_before)
- && NILP (current_buffer->overlays_after))
+ && NILP (Vbefore_change_functions)
+ && !current_buffer->overlays_before
+ && !current_buffer->overlays_after)
{
Lisp_Object elt;
return;
}
- if (!NILP (combine_after_change_list))
+ if (!NILP (combine_after_change_list))
Fcombine_after_change_execute ();
- /* Run the after-change-function if any.
- We don't bother "binding" this variable to nil
- because it is obsolete anyway and new code should not use it. */
- if (!NILP (Vafter_change_function))
- call3 (Vafter_change_function,
- make_number (charpos), make_number (charpos + lenins),
- make_number (lendel));
-
if (!NILP (Vafter_change_functions))
{
Lisp_Object args[4];
Lisp_Object before_change_functions;
Lisp_Object after_change_functions;
+ struct buffer *old = current_buffer;
+ struct buffer *new;
struct gcpro gcpro1, gcpro2;
/* "Bind" before-change-functions and after-change-functions
run_hook_list_with_args (after_change_functions,
4, args);
- /* "Unbind" the variables we "bound" to nil. */
- Vbefore_change_functions = before_change_functions;
- Vafter_change_functions = after_change_functions;
+ /* "Unbind" the variables we "bound" to nil. Beware a
+ buffer-local hook which changes the buffer when run (e.g. W3). */
+ if (old != current_buffer)
+ {
+ new = current_buffer;
+ set_buffer_internal (old);
+ Vbefore_change_functions = before_change_functions;
+ Vafter_change_functions = after_change_functions;
+ set_buffer_internal (new);
+ }
+ else
+ {
+ Vbefore_change_functions = before_change_functions;
+ Vafter_change_functions = after_change_functions;
+ }
UNGCPRO;
}
- if (!NILP (current_buffer->overlays_before)
- || !NILP (current_buffer->overlays_after))
+ if (current_buffer->overlays_before || current_buffer->overlays_after)
report_overlay_modification (make_number (charpos),
make_number (charpos + lenins),
1,
}
DEFUN ("combine-after-change-execute", Fcombine_after_change_execute,
- Scombine_after_change_execute, 0, 0, 0,
- "This function is for use internally in `combine-after-change-calls'.")
- ()
+ Scombine_after_change_execute, 0, 0, 0,
+ doc: /* This function is for use internally in `combine-after-change-calls'. */)
+ ()
{
- int count = specpdl_ptr - specpdl;
+ int count = SPECPDL_INDEX ();
int beg, end, change;
int begpos, endpos;
Lisp_Object tail;
that was changed. */
begpos = BEG + beg;
endpos = Z - end;
-
+
/* We are about to handle these, so discard them. */
combine_after_change_list = Qnil;
combine_after_change_buffer = Qnil;
DEFVAR_BOOL ("check-markers-debug-flag", &check_markers_debug_flag,
- "Non-nil means enable debugging checks for invalid marker positions.");
+ doc: /* Non-nil means enable debugging checks for invalid marker positions. */);
check_markers_debug_flag = 0;
DEFVAR_LISP ("combine-after-change-calls", &Vcombine_after_change_calls,
- "Used internally by the `combine-after-change-calls' macro.");
+ doc: /* Used internally by the `combine-after-change-calls' macro. */);
Vcombine_after_change_calls = Qnil;
DEFVAR_BOOL ("inhibit-modification-hooks", &inhibit_modification_hooks,
- "Non-nil means don't run any of the hooks that respond to buffer changes.\n\
-This affects `before-change-functions' and `after-change-functions',\n\
-as well as hooks attached to text properties and overlays.");
+ doc: /* Non-nil means don't run any of the hooks that respond to buffer changes.
+This affects `before-change-functions' and `after-change-functions',
+as well as hooks attached to text properties and overlays. */);
inhibit_modification_hooks = 0;
+ Qinhibit_modification_hooks = intern ("inhibit-modification-hooks");
+ staticpro (&Qinhibit_modification_hooks);
defsubr (&Scombine_after_change_execute);
}
+
+/* arch-tag: 9b34b886-47d7-465e-a234-299af411b23d
+ (do not change this comment) */
HCoop / bpt / emacs.git / blobdiff