m->bytepos = from_byte;
}
- /* In a single-byte buffer, a marker's two positions must be equal. */
- if (Z == Z_BYTE)
- {
- register int i = m->bytepos;
-
-#if 0
- /* We use FROM_BYTE here instead of GPT_BYTE
- because FROM_BYTE is where the gap will be after the deletion. */
- if (i > from_byte + coming_gap_size)
- i -= coming_gap_size;
- else if (i > from_byte)
- i = from_byte;
-#endif
-
- if (m->charpos != i)
- abort ();
- }
-
marker = m->chain;
}
}
while (!NILP (marker))
{
register struct Lisp_Marker *m = XMARKER (marker);
+
+ /* In a single-byte buffer, a marker's two positions must be equal.
+ (If this insertion is going to combine characters, Z will
+ become different from Z_BYTE, but they might be the same now.
+ If so, the two OLD positions of the marker should be equal.) */
+ if (Z == Z_BYTE)
+ {
+ if (m->charpos != m->bytepos)
+ abort ();
+ }
+
if (m->bytepos == from_byte)
{
if (m->insertion_type || before_markers)
m->charpos += nchars;
}
- /* In a single-byte buffer, a marker's two positions must be equal. */
- if (Z == Z_BYTE)
- {
- if (m->charpos != m->bytepos)
- abort ();
- }
-
marker = m->chain;
}
signal_after_change (opoint, 0, PT - opoint);
}
}
-\f
+
/* Subroutine used by the insert functions above. */
void
insert_1_both (string, chars_in_text (string, nbytes), nbytes,
inherit, prepare, before_markers);
}
-
+\f
/* See if the bytes before POS/POS_BYTE combine with bytes
at the start of STRING to form a single character.
If so, return the number of bytes at the start of STRING
return pos_byte - opos_byte;
}
+/* Combine NBYTES stray trailing-codes, which were formerly separate
+ characters, with the preceding character. These bytes
+ are located after position POS / POS_BYTE, and the preceding character
+ is located just before that position. */
+
+static void
+combine_bytes (pos, pos_byte, nbytes)
+ int pos, pos_byte, nbytes;
+{
+ /* Adjust all markers. */
+ adjust_markers_for_delete (pos, pos_byte, pos + nbytes, pos_byte);
+
+ adjust_overlays_for_delete (pos, nbytes);
+
+ if (PT > pos)
+ BUF_PT (current_buffer) -= nbytes;
+ if (GPT > pos)
+ GPT -= nbytes;
+ if (Z > pos)
+ Z -= nbytes;
+ if (ZV > pos)
+ ZV -= nbytes;
+
+ if (BUF_INTERVALS (current_buffer) != 0)
+ /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES. */
+ offset_intervals (current_buffer, pos, - nbytes);
+}
+\f
/* Insert a sequence of NCHARS chars which occupy NBYTES bytes
starting at STRING. INHERIT, PREPARE and BEFORE_MARKERS
are the same as in insert_1. */
{
register Lisp_Object temp;
int combined_before_bytes, combined_after_bytes;
- int adjusted_nchars;
if (NILP (current_buffer->enable_multibyte_characters))
nchars = nbytes;
if (GAP_SIZE < nbytes)
make_gap (nbytes - GAP_SIZE);
- combined_before_bytes = count_combining_before (string, nbytes, PT, PT_BYTE);
- combined_after_bytes = count_combining_after (string, nbytes, PT, PT_BYTE);
-
- /* This is the net amount that Z will increase from this insertion. */
-
- adjusted_nchars = nchars - combined_before_bytes - combined_after_bytes;
-
if (prepare)
- prepare_to_modify_buffer (PT - !!combined_before_bytes,
- PT + combined_after_bytes,
- NULL);
+ prepare_to_modify_buffer (PT, PT, NULL);
+
+ combined_before_bytes
+ = count_combining_before (string, nbytes, PT, PT_BYTE);
+ combined_after_bytes
+ = count_combining_after (string, nbytes, PT, PT_BYTE);
/* Record deletion of the surrounding text that combines with
the insertion. This, together with recording the insertion,
bcopy (string, GPT_ADDR, nbytes);
-#ifdef USE_TEXT_PROPERTIES
- if (BUF_INTERVALS (current_buffer) != 0)
- /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES. */
- offset_intervals (current_buffer, PT, adjusted_nchars);
-#endif
-
GAP_SIZE -= nbytes;
/* When we have combining at the end of the insertion,
this is the character position before the combined character. */
- GPT += nchars - combined_before_bytes - !!combined_after_bytes;
- ZV += adjusted_nchars;
- Z += adjusted_nchars;
+ 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. */
- adjust_overlays_for_insert (PT, adjusted_nchars);
+
+ if (combined_after_bytes)
+ move_gap_both (GPT + combined_after_bytes,
+ GPT_BYTE + combined_after_bytes);
+
+ if (GPT_BYTE < GPT)
+ abort ();
+
+ adjust_overlays_for_insert (PT, nchars);
adjust_markers_for_insert (PT, PT_BYTE,
- PT + adjusted_nchars, PT_BYTE + nbytes,
+ PT + nchars, PT_BYTE + nbytes,
combined_before_bytes, combined_after_bytes,
before_markers);
- /* "Delete" the combined-after bytes, as far as intervals are concerned.
- Note that as far as the intervals are concerned,
- no insertion has yet taken place, so these bytes are right after PT. */
- if (combined_after_bytes)
- offset_intervals (current_buffer, PT, - combined_after_bytes);
-
#ifdef USE_TEXT_PROPERTIES
+ if (BUF_INTERVALS (current_buffer) != 0)
+ /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES. */
+ offset_intervals (current_buffer, PT, nchars);
+
if (!inherit && BUF_INTERVALS (current_buffer) != 0)
- Fset_text_properties (make_number (PT),
- make_number (PT + adjusted_nchars + combined_after_bytes),
+ Fset_text_properties (make_number (PT), make_number (PT + nchars),
Qnil, Qnil);
#endif
- adjust_point (adjusted_nchars + combined_after_bytes,
- nbytes + combined_after_bytes);
+ {
+ int pos = PT, pos_byte = PT_BYTE;
- if (combined_after_bytes)
- move_gap_both (GPT + 1, GPT_BYTE + combined_after_bytes);
+ adjust_point (nchars + combined_after_bytes,
+ nbytes + combined_after_bytes);
- if (GPT_BYTE < GPT)
- abort ();
+ if (combined_after_bytes)
+ combine_bytes (pos + nchars, pos_byte + nbytes, combined_after_bytes);
+
+ if (combined_before_bytes)
+ combine_bytes (pos, pos_byte, combined_before_bytes);
+ }
}
\f
/* Insert the part of the text of STRING, a Lisp object assumed to be
the text that has been stored by copy_text. */
combined_before_bytes
- = count_combining_before (XSTRING (string)->data + pos_byte, nbytes,
- PT, PT_BYTE);
+ = count_combining_before (GPT_ADDR, outgoing_nbytes, PT, PT_BYTE);
combined_after_bytes
- = count_combining_after (XSTRING (string)->data + pos_byte, nbytes,
- PT, PT_BYTE);
-
- /* This is the net amount that Z will increase from this insertion. */
- adjusted_nchars = nchars - combined_before_bytes - combined_after_bytes;
+ = count_combining_after (GPT_ADDR, outgoing_nbytes, PT, PT_BYTE);
/* Record deletion of the surrounding text that combines with
the insertion. This, together with recording the insertion,
record_insert (PT - !!combined_before_bytes, nchars);
MODIFF++;
- /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */
- offset_intervals (current_buffer, PT, adjusted_nchars);
-
GAP_SIZE -= outgoing_nbytes;
- GPT += nchars - combined_before_bytes - !!combined_after_bytes;
- ZV += adjusted_nchars;
- Z += adjusted_nchars;
+ GPT += nchars;
+ ZV += nchars;
+ Z += nchars;
GPT_BYTE += outgoing_nbytes;
ZV_BYTE += outgoing_nbytes;
Z_BYTE += outgoing_nbytes;
if (GAP_SIZE > 0) *(GPT_ADDR) = 0; /* Put an anchor. */
- adjust_overlays_for_insert (PT, adjusted_nchars);
- adjust_markers_for_insert (PT, PT_BYTE, PT + adjusted_nchars,
- PT_BYTE + outgoing_nbytes,
- combined_before_bytes, combined_after_bytes,
- before_markers);
if (combined_after_bytes)
- move_gap_both (GPT + 1, GPT_BYTE + combined_after_bytes);
+ move_gap_both (GPT + combined_after_bytes,
+ GPT_BYTE + combined_after_bytes);
if (GPT_BYTE < GPT)
abort ();
- /* "Delete" the combined-after bytes, as far as intervals are concerned.
- Note that as far as the intervals are concerned,
- no insertion has yet taken place, so these bytes are right after PT. */
- if (combined_after_bytes)
- offset_intervals (current_buffer, PT, - combined_after_bytes);
+ adjust_overlays_for_insert (PT, nchars);
+ adjust_markers_for_insert (PT, PT_BYTE, PT + nchars,
+ PT_BYTE + outgoing_nbytes,
+ combined_before_bytes, combined_after_bytes,
+ before_markers);
+ /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */
+ offset_intervals (current_buffer, PT, nchars);
+
+ intervals = XSTRING (string)->intervals;
/* Get the intervals for the part of the string we are inserting--
not including the combined-before bytes. */
- intervals = XSTRING (string)->intervals;
- if (combined_before_bytes != 0
- || nbytes < XSTRING (string)->size_byte)
- intervals = copy_intervals (intervals, pos + combined_before_bytes,
- nchars - combined_before_bytes);
+ if (nbytes < XSTRING (string)->size_byte)
+ intervals = copy_intervals (intervals, pos, nchars);
/* Insert those intervals. */
- graft_intervals_into_buffer (intervals, PT, nchars - combined_before_bytes,
+ graft_intervals_into_buffer (intervals, PT, nchars,
current_buffer, inherit);
- adjust_point (adjusted_nchars + combined_after_bytes,
- outgoing_nbytes + combined_after_bytes);
+ {
+ int pos = PT, pos_byte = PT_BYTE;
+
+ adjust_point (nchars + combined_after_bytes,
+ outgoing_nbytes + combined_after_bytes);
+
+ if (combined_after_bytes)
+ combine_bytes (pos + nchars, pos_byte + outgoing_nbytes,
+ combined_after_bytes);
+
+ if (combined_before_bytes)
+ combine_bytes (pos, pos_byte, combined_before_bytes);
+ }
}
\f
/* Insert text from BUF, NCHARS characters starting at CHARPOS, into the
/* We have copied text into the gap, but we have not altered
PT or PT_BYTE yet. So we can pass PT and PT_BYTE
to these functions and get the same results as we would
- have got earlier on. Meanwhile, PT_ADDR does point to
+ have got earlier on. Meanwhile, GPT_ADDR does point to
the text that has been stored by copy_text. */
combined_before_bytes
- = count_combining_before (PT_ADDR, outgoing_nbytes, PT, PT_BYTE);
+ = count_combining_before (GPT_ADDR, outgoing_nbytes, PT, PT_BYTE);
combined_after_bytes
- = count_combining_after (PT_ADDR, outgoing_nbytes,
+ = count_combining_after (GPT_ADDR, outgoing_nbytes,
PT, PT_BYTE);
- /* This is the net amount that Z will increase from this insertion. */
- adjusted_nchars = nchars - combined_before_bytes - combined_after_bytes;
-
/* Record deletion of the surrounding text that combines with
the insertion. This, together with recording the insertion,
will add up to the right stuff in the undo list.
record_insert (PT - !!combined_before_bytes, nchars);
MODIFF++;
-#ifdef USE_TEXT_PROPERTIES
- if (BUF_INTERVALS (current_buffer) != 0)
- offset_intervals (current_buffer, PT, adjusted_nchars);
-#endif
-
GAP_SIZE -= outgoing_nbytes;
- GPT += nchars - combined_before_bytes - !!combined_after_bytes;
- ZV += adjusted_nchars;
- Z += adjusted_nchars;
+ GPT += nchars;
+ ZV += nchars;
+ Z += nchars;
GPT_BYTE += outgoing_nbytes;
ZV_BYTE += outgoing_nbytes;
Z_BYTE += outgoing_nbytes;
if (GAP_SIZE > 0) *(GPT_ADDR) = 0; /* Put an anchor. */
- adjust_overlays_for_insert (PT, adjusted_nchars);
- adjust_markers_for_insert (PT, PT_BYTE, PT + adjusted_nchars,
+
+ if (combined_after_bytes)
+ move_gap_both (GPT + combined_after_bytes,
+ GPT_BYTE + combined_after_bytes);
+
+ if (GPT_BYTE < GPT)
+ abort ();
+
+ adjust_overlays_for_insert (PT, nchars);
+ adjust_markers_for_insert (PT, PT_BYTE, PT + nchars,
PT_BYTE + outgoing_nbytes,
combined_before_bytes, combined_after_bytes, 0);
- /* "Delete" the combined-after bytes, as far as intervals are concerned.
- Note that as far as the intervals are concerned,
- no insertion has yet taken place, so these bytes are right after PT. */
- if (combined_after_bytes)
- offset_intervals (current_buffer, PT, - combined_after_bytes);
+#ifdef USE_TEXT_PROPERTIES
+ if (BUF_INTERVALS (current_buffer) != 0)
+ offset_intervals (current_buffer, PT, nchars);
+#endif
/* Get the intervals for the part of the string we are inserting--
not including the combined-before bytes. */
intervals = BUF_INTERVALS (buf);
- if (combined_before_bytes != 0
- || nbytes < BUF_Z_BYTE (buf) - BUF_BEG_BYTE (buf))
- intervals = copy_intervals (intervals, from + combined_before_bytes,
- nchars - combined_before_bytes);
+ if (outgoing_nbytes < BUF_Z_BYTE (buf) - BUF_BEG_BYTE (buf))
+ intervals = copy_intervals (intervals, from, nchars);
/* Insert those intervals. */
- graft_intervals_into_buffer (intervals, PT, nchars - combined_before_bytes,
- current_buffer, inherit);
+ graft_intervals_into_buffer (intervals, PT, nchars, current_buffer, inherit);
+ {
+ int pos = PT, pos_byte = PT_BYTE;
- adjust_point (adjusted_nchars + combined_after_bytes,
- outgoing_nbytes + combined_after_bytes);
+ adjust_point (nchars + combined_after_bytes,
+ outgoing_nbytes + combined_after_bytes);
- if (combined_after_bytes)
- move_gap_both (GPT + 1, GPT_BYTE + combined_after_bytes);
+ if (combined_after_bytes)
+ combine_bytes (pos + nchars, pos_byte + outgoing_nbytes,
+ combined_after_bytes);
- if (GPT_BYTE < GPT)
- abort ();
+ if (combined_before_bytes)
+ combine_bytes (pos, pos_byte, combined_before_bytes);
+ }
}
\f
/* This function should be called after moving gap to FROM and before
int combined_before_bytes, combined_after_bytes;
int adjusted_inschars;
INTERVAL intervals;
+ int outgoing_insbytes = insbytes;
GCPRO1 (new);
if (nbytes_del <= 0 && insbytes == 0)
return;
+ /* Make OUTGOING_INSBYTES describe the text
+ as it will be inserted in this buffer. */
+
+ if (NILP (current_buffer->enable_multibyte_characters))
+ outgoing_insbytes = inschars;
+ else if (inschars == insbytes)
+ outgoing_insbytes
+ = count_size_as_multibyte (XSTRING (new)->data, insbytes);
+
/* Make sure point-max won't overflow after this insertion. */
XSETINT (temp, Z_BYTE - nbytes_del + insbytes);
if (Z_BYTE - nbytes_del + insbytes != XINT (temp))
if (GAP_SIZE < insbytes)
make_gap (insbytes - GAP_SIZE);
+ /* Copy the string text into the buffer, perhaps converting
+ between single-byte and multibyte. */
+ copy_text (XSTRING (new)->data, GPT_ADDR, insbytes,
+ /* If these are equal, it is a single-byte string.
+ Its chars are either ASCII, in which case copy_text
+ won't change it, or single-byte non-ASCII chars,
+ that need to be changed. */
+ inschars != insbytes,
+ ! NILP (current_buffer->enable_multibyte_characters));
+
/* We have copied text into the gap, but we have not altered
PT or PT_BYTE yet. So we can pass PT and PT_BYTE
to these functions and get the same results as we would
- have got earlier on. Meanwhile, PT_ADDR does point to
+ have got earlier on. Meanwhile, GPT_ADDR does point to
the text that has been stored by copy_text. */
combined_before_bytes
- = count_combining_before (XSTRING (new)->data, insbytes, PT, PT_BYTE);
+ = count_combining_before (GPT_ADDR, outgoing_insbytes, PT, PT_BYTE);
combined_after_bytes
- = count_combining_after (XSTRING (new)->data, insbytes, PT, PT_BYTE);
-
- /* This is the net amount that Z will increase from this insertion. */
- adjusted_inschars
- = inschars - combined_before_bytes - combined_after_bytes;
+ = count_combining_after (GPT_ADDR, outgoing_insbytes, PT, PT_BYTE);
/* Record deletion of the surrounding text that combines with
the insertion. This, together with recording the insertion,
record_insert (from, inschars);
- bcopy (XSTRING (new)->data, GPT_ADDR, insbytes);
-
- /* Relocate point as if it were a marker. */
- if (from < PT)
- adjust_point ((from + adjusted_inschars - (PT < to ? PT : to)
- + combined_after_bytes),
- (from_byte + insbytes
- - (PT_BYTE < to_byte ? PT_BYTE : to_byte)
- + combined_after_bytes));
-
-#ifdef USE_TEXT_PROPERTIES
- offset_intervals (current_buffer, PT, adjusted_inschars - nchars_del);
-#endif
-
- GAP_SIZE -= insbytes;
- GPT += inschars - combined_before_bytes - !!combined_after_bytes;
- ZV += adjusted_inschars;
- Z += adjusted_inschars;
- GPT_BYTE += insbytes;
- ZV_BYTE += insbytes;
- ZV_BYTE += insbytes;
+ GAP_SIZE -= outgoing_insbytes;
+ GPT += inschars;
+ ZV += inschars;
+ Z += inschars;
+ GPT_BYTE += outgoing_insbytes;
+ ZV_BYTE += outgoing_insbytes;
+ Z_BYTE += outgoing_insbytes;
if (GAP_SIZE > 0) *(GPT_ADDR) = 0; /* Put an anchor. */
+ if (combined_after_bytes)
+ move_gap_both (GPT + combined_after_bytes,
+ GPT_BYTE + combined_after_bytes);
+
if (GPT_BYTE < GPT)
abort ();
/* Adjust the overlay center as needed. This must be done after
adjusting the markers that bound the overlays. */
adjust_overlays_for_delete (from, nchars_del);
- adjust_overlays_for_insert (from, adjusted_inschars);
- adjust_markers_for_insert (from, from_byte, from + adjusted_inschars,
- from_byte + insbytes,
+ adjust_overlays_for_insert (from, inschars);
+ adjust_markers_for_insert (from, from_byte,
+ from + inschars, from_byte + outgoing_insbytes,
combined_before_bytes, combined_after_bytes, 0);
- /* "Delete" the combined-after bytes, as far as intervals are concerned.
- Note that as far as the intervals are concerned,
- no insertion has yet taken place, so these bytes are right after PT. */
- if (combined_after_bytes)
- offset_intervals (current_buffer, PT, - combined_after_bytes);
+#ifdef USE_TEXT_PROPERTIES
+ offset_intervals (current_buffer, PT, 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;
- if (combined_before_bytes != 0)
- intervals = copy_intervals (intervals, combined_before_bytes,
- inschars - combined_before_bytes);
-
/* Insert those intervals. */
- graft_intervals_into_buffer (intervals, from,
- inschars - combined_before_bytes,
+ graft_intervals_into_buffer (intervals, from, inschars,
current_buffer, inherit);
+#endif
- if (insbytes == 0)
- evaporate_overlays (from);
+ /* Relocate point as if it were a marker. */
+ if (from < PT)
+ adjust_point ((from + inschars - (PT < to ? PT : to)
+ + combined_after_bytes),
+ (from_byte + outgoing_insbytes
+ - (PT_BYTE < to_byte ? PT_BYTE : to_byte)
+ + combined_after_bytes));
if (combined_after_bytes)
- move_gap_both (GPT + 1, GPT_BYTE + combined_after_bytes);
+ combine_bytes (from + inschars, from_byte + outgoing_insbytes,
+ combined_after_bytes);
+
+ if (combined_before_bytes)
+ combine_bytes (from, from_byte, combined_before_bytes);
+
+ if (outgoing_insbytes == 0)
+ evaporate_overlays (from);
MODIFF++;
UNGCPRO;
- signal_after_change (from, nchars_del, adjusted_inschars);
+ signal_after_change (from, nchars_del, PT - from);
}
\f
/* Delete characters in current buffer
int from, from_byte, to, to_byte;
{
register int nbytes_del, nchars_del;
+ int combined_after_bytes;
nchars_del = to - from;
nbytes_del = to_byte - from_byte;
if (Z - GPT < end_unchanged)
end_unchanged = Z - GPT;
+ combined_after_bytes
+ = count_combining_before (GAP_END_ADDR, ZV_BYTE - GPT_BYTE, PT, PT_BYTE);
+
+ if (combined_after_bytes)
+ move_gap_both (GPT + combined_after_bytes,
+ GPT_BYTE + combined_after_bytes);
+
+ if (combined_after_bytes)
+ combine_bytes (PT, PT_BYTE, combined_after_bytes);
+
evaporate_overlays (from);
signal_after_change (from, nchars_del, 0);
}
projects / emacs.git / commitdiff