/* Buffer manipulation primitives for GNU Emacs.
-Copyright (C) 1985-1989, 1993-1995, 1997-2012 Free Software Foundation, Inc.
+Copyright (C) 1985-1989, 1993-1995, 1997-2013 Free Software Foundation,
+Inc.
This file is part of GNU Emacs.
#include <config.h>
+#define BUFFER_INLINE EXTERN_INLINE
+
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/param.h>
#include <errno.h>
#include <stdio.h>
-#include <setjmp.h>
#include <unistd.h>
#include <verify.h>
#include "intervals.h"
#include "window.h"
#include "commands.h"
-#include "buffer.h"
#include "character.h"
+#include "buffer.h"
#include "region-cache.h"
#include "indent.h"
#include "blockinput.h"
#include "keymap.h"
#include "frame.h"
-struct buffer *current_buffer; /* the current buffer */
+struct buffer *current_buffer; /* The current buffer. */
/* First buffer in chain of all buffers (in reverse order of creation).
Threaded through ->header.next.buffer. */
Setting the default value also goes through the alist of buffers
and stores into each buffer that does not say it has a local value. */
-DECL_ALIGN (struct buffer, buffer_defaults);
-
-/* A Lisp_Object pointer to the above, used for staticpro */
-
-static Lisp_Object Vbuffer_defaults;
+struct buffer alignas (GCALIGNMENT) buffer_defaults;
/* This structure marks which slots in a buffer have corresponding
default values in buffer_defaults.
and the corresponding slot in buffer_defaults is not used.
If a slot in this structure corresponding to a DEFVAR_PER_BUFFER is
- zero, that is a bug */
+ zero, that is a bug. */
struct buffer buffer_local_flags;
/* This structure holds the names of symbols whose values may be
- buffer-local. It is indexed and accessed in the same way as the above. */
-
-DECL_ALIGN (struct buffer, buffer_local_symbols);
+ buffer-local. It is indexed and accessed in the same way as the above. */
-/* A Lisp_Object pointer to the above, used for staticpro */
-static Lisp_Object Vbuffer_local_symbols;
+struct buffer alignas (GCALIGNMENT) buffer_local_symbols;
/* Return the symbol of the per-buffer variable at offset OFFSET in
the buffer structure. */
/* Maximum length of an overlay vector. */
#define OVERLAY_COUNT_MAX \
((ptrdiff_t) min (MOST_POSITIVE_FIXNUM, \
- min (PTRDIFF_MAX, SIZE_MAX) / sizeof (Lisp_Object)))
+ min (PTRDIFF_MAX, SIZE_MAX) / word_size))
/* Flags indicating which built-in buffer-local variables
are permanent locals. */
int last_per_buffer_idx;
-static Lisp_Object Fset_buffer_major_mode (Lisp_Object);
-static Lisp_Object Fdelete_overlay (Lisp_Object);
static void call_overlay_mod_hooks (Lisp_Object list, Lisp_Object overlay,
- int after, Lisp_Object arg1,
+ bool after, Lisp_Object arg1,
Lisp_Object arg2, Lisp_Object arg3);
static void swap_out_buffer_local_variables (struct buffer *b);
-static void reset_buffer_local_variables (struct buffer *b, int permanent_too);
+static void reset_buffer_local_variables (struct buffer *, bool);
-/* Alist of all buffer names vs the buffers. */
-/* This used to be a variable, but is no longer,
- to prevent lossage due to user rplac'ing this alist or its elements. */
+/* Alist of all buffer names vs the buffers. This used to be
+ a Lisp-visible variable, but is no longer, to prevent lossage
+ due to user rplac'ing this alist or its elements. */
Lisp_Object Vbuffer_alist;
static Lisp_Object Qkill_buffer_query_functions;
Lisp_Object Qfirst_change_hook;
Lisp_Object Qbefore_change_functions;
Lisp_Object Qafter_change_functions;
-static Lisp_Object Qucs_set_table_for_input;
static Lisp_Object Qfundamental_mode, Qmode_class, Qpermanent_local;
static Lisp_Object Qpermanent_local_hook;
static Lisp_Object Qprotected_field;
-static Lisp_Object QSFundamental; /* A string "Fundamental" */
+static Lisp_Object QSFundamental; /* A string "Fundamental". */
static Lisp_Object Qkill_buffer_hook;
static Lisp_Object Qbuffer_list_update_hook;
static void alloc_buffer_text (struct buffer *, ptrdiff_t);
static void free_buffer_text (struct buffer *b);
static struct Lisp_Overlay * copy_overlays (struct buffer *, struct Lisp_Overlay *);
-static void modify_overlay (struct buffer *, EMACS_INT, EMACS_INT);
-static Lisp_Object buffer_lisp_local_variables (struct buffer *, int);
+static void modify_overlay (struct buffer *, ptrdiff_t, ptrdiff_t);
+static Lisp_Object buffer_lisp_local_variables (struct buffer *, bool);
+
+static void
+CHECK_OVERLAY (Lisp_Object x)
+{
+ CHECK_TYPE (OVERLAYP (x), Qoverlayp, x);
+}
-/* For debugging; temporary. See set_buffer_internal. */
-/* Lisp_Object Qlisp_mode, Vcheck_symbol; */
+/* These setters are used only in this file, so they can be private. */
+static void
+bset_abbrev_mode (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (abbrev_mode) = val;
+}
+static void
+bset_abbrev_table (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (abbrev_table) = val;
+}
+static void
+bset_auto_fill_function (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (auto_fill_function) = val;
+}
+static void
+bset_auto_save_file_format (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (auto_save_file_format) = val;
+}
+static void
+bset_auto_save_file_name (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (auto_save_file_name) = val;
+}
+static void
+bset_backed_up (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (backed_up) = val;
+}
+static void
+bset_begv_marker (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (begv_marker) = val;
+}
+static void
+bset_bidi_display_reordering (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (bidi_display_reordering) = val;
+}
+static void
+bset_buffer_file_coding_system (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (buffer_file_coding_system) = val;
+}
+static void
+bset_cache_long_scans (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (cache_long_scans) = val;
+}
+static void
+bset_case_fold_search (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (case_fold_search) = val;
+}
+static void
+bset_ctl_arrow (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (ctl_arrow) = val;
+}
+static void
+bset_cursor_in_non_selected_windows (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (cursor_in_non_selected_windows) = val;
+}
+static void
+bset_cursor_type (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (cursor_type) = val;
+}
+static void
+bset_display_table (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (display_table) = val;
+}
+static void
+bset_extra_line_spacing (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (extra_line_spacing) = val;
+}
+static void
+bset_file_format (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (file_format) = val;
+}
+static void
+bset_file_truename (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (file_truename) = val;
+}
+static void
+bset_fringe_cursor_alist (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (fringe_cursor_alist) = val;
+}
+static void
+bset_fringe_indicator_alist (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (fringe_indicator_alist) = val;
+}
+static void
+bset_fringes_outside_margins (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (fringes_outside_margins) = val;
+}
+static void
+bset_header_line_format (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (header_line_format) = val;
+}
+static void
+bset_indicate_buffer_boundaries (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (indicate_buffer_boundaries) = val;
+}
+static void
+bset_indicate_empty_lines (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (indicate_empty_lines) = val;
+}
+static void
+bset_invisibility_spec (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (invisibility_spec) = val;
+}
+static void
+bset_left_fringe_width (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (left_fringe_width) = val;
+}
+static void
+bset_major_mode (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (major_mode) = val;
+}
+static void
+bset_mark (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (mark) = val;
+}
+static void
+bset_minor_modes (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (minor_modes) = val;
+}
+static void
+bset_mode_line_format (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (mode_line_format) = val;
+}
+static void
+bset_mode_name (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (mode_name) = val;
+}
+static void
+bset_name (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (name) = val;
+}
+static void
+bset_overwrite_mode (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (overwrite_mode) = val;
+}
+static void
+bset_pt_marker (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (pt_marker) = val;
+}
+static void
+bset_right_fringe_width (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (right_fringe_width) = val;
+}
+static void
+bset_save_length (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (save_length) = val;
+}
+static void
+bset_scroll_bar_width (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (scroll_bar_width) = val;
+}
+static void
+bset_scroll_down_aggressively (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (scroll_down_aggressively) = val;
+}
+static void
+bset_scroll_up_aggressively (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (scroll_up_aggressively) = val;
+}
+static void
+bset_selective_display (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (selective_display) = val;
+}
+static void
+bset_selective_display_ellipses (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (selective_display_ellipses) = val;
+}
+static void
+bset_vertical_scroll_bar_type (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (vertical_scroll_bar_type) = val;
+}
+static void
+bset_word_wrap (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (word_wrap) = val;
+}
+static void
+bset_zv_marker (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (zv_marker) = val;
+}
void
nsberror (Lisp_Object spec)
Value is nil if OBJECT is not a buffer or if it has been killed. */)
(Lisp_Object object)
{
- return ((BUFFERP (object) && ! NILP (BVAR (XBUFFER (object), name)))
+ return ((BUFFERP (object) && BUFFER_LIVE_P (XBUFFER (object)))
? Qt : Qnil);
}
Lisp_Object framelist, prevlist, tail;
Lisp_Object args[3];
- CHECK_FRAME (frame);
framelist = Fcopy_sequence (XFRAME (frame)->buffer_list);
prevlist = Fnreverse (Fcopy_sequence
(XFRAME (frame)->buried_buffer_list));
See also `find-buffer-visiting'. */)
(register Lisp_Object filename)
{
- register Lisp_Object tail, buf, tem;
- Lisp_Object handler;
+ register Lisp_Object tail, buf, handler;
CHECK_STRING (filename);
filename = Fexpand_file_name (filename, Qnil);
return BUFFERP (handled_buf) ? handled_buf : Qnil;
}
- for (tail = Vbuffer_alist; CONSP (tail); tail = XCDR (tail))
+ FOR_EACH_LIVE_BUFFER (tail, buf)
{
- buf = Fcdr (XCAR (tail));
- if (!BUFFERP (buf)) continue;
if (!STRINGP (BVAR (XBUFFER (buf), filename))) continue;
- tem = Fstring_equal (BVAR (XBUFFER (buf), filename), filename);
- if (!NILP (tem))
+ if (!NILP (Fstring_equal (BVAR (XBUFFER (buf), filename), filename)))
return buf;
}
return Qnil;
Lisp_Object
get_truename_buffer (register Lisp_Object filename)
{
- register Lisp_Object tail, buf, tem;
+ register Lisp_Object tail, buf;
- for (tail = Vbuffer_alist; CONSP (tail); tail = XCDR (tail))
+ FOR_EACH_LIVE_BUFFER (tail, buf)
{
- buf = Fcdr (XCAR (tail));
- if (!BUFFERP (buf)) continue;
if (!STRINGP (BVAR (XBUFFER (buf), file_truename))) continue;
- tem = Fstring_equal (BVAR (XBUFFER (buf), file_truename), filename);
- if (!NILP (tem))
+ if (!NILP (Fstring_equal (BVAR (XBUFFER (buf), file_truename), filename)))
return buf;
}
return Qnil;
/* An ordinary buffer uses its own struct buffer_text. */
b->text = &b->own_text;
- b->base_buffer = 0;
+ b->base_buffer = NULL;
+ /* No one shares the text with us now. */
+ b->indirections = 0;
+ /* No one shows us now. */
+ b->window_count = 0;
BUF_GAP_SIZE (b) = 20;
- BLOCK_INPUT;
+ block_input ();
/* We allocate extra 1-byte at the tail and keep it always '\0' for
anchoring a search. */
alloc_buffer_text (b, BUF_GAP_SIZE (b) + 1);
- UNBLOCK_INPUT;
+ unblock_input ();
if (! BUF_BEG_ADDR (b))
buffer_memory_full (BUF_GAP_SIZE (b) + 1);
BUF_CHARS_MODIFF (b) = 1;
BUF_OVERLAY_MODIFF (b) = 1;
BUF_SAVE_MODIFF (b) = 1;
- BUF_INTERVALS (b) = 0;
+ BUF_COMPACT (b) = 1;
+ set_buffer_intervals (b, NULL);
BUF_UNCHANGED_MODIFIED (b) = 1;
BUF_OVERLAY_UNCHANGED_MODIFIED (b) = 1;
BUF_END_UNCHANGED (b) = 0;
b->newline_cache = 0;
b->width_run_cache = 0;
- BVAR (b, width_table) = Qnil;
+ b->bidi_paragraph_cache = 0;
+ bset_width_table (b, Qnil);
b->prevent_redisplay_optimizations_p = 1;
- /* Put this on the chain of all buffers including killed ones. */
- b->header.next.buffer = all_buffers;
- all_buffers = b;
-
/* An ordinary buffer normally doesn't need markers
to handle BEGV and ZV. */
- BVAR (b, pt_marker) = Qnil;
- BVAR (b, begv_marker) = Qnil;
- BVAR (b, zv_marker) = Qnil;
+ bset_pt_marker (b, Qnil);
+ bset_begv_marker (b, Qnil);
+ bset_zv_marker (b, Qnil);
name = Fcopy_sequence (buffer_or_name);
- STRING_SET_INTERVALS (name, NULL_INTERVAL);
- BVAR (b, name) = name;
+ set_string_intervals (name, NULL);
+ bset_name (b, name);
- BVAR (b, undo_list) = (SREF (name, 0) != ' ') ? Qnil : Qt;
+ bset_undo_list (b, SREF (name, 0) != ' ' ? Qnil : Qt);
reset_buffer (b);
reset_buffer_local_variables (b, 1);
- BVAR (b, mark) = Fmake_marker ();
+ bset_mark (b, Fmake_marker ());
BUF_MARKERS (b) = NULL;
- BVAR (b, name) = name;
/* Put this in the alist of all live buffers. */
XSETBUFFER (buffer, b);
- Vbuffer_alist = nconc2 (Vbuffer_alist, Fcons (Fcons (name, buffer), Qnil));
+ Vbuffer_alist = nconc2 (Vbuffer_alist, list1 (Fcons (name, buffer)));
/* And run buffer-list-update-hook. */
if (!NILP (Vrun_hooks))
call1 (Vrun_hooks, Qbuffer_list_update_hook);
- /* An error in calling the function here (should someone redefine it)
- can lead to infinite regress until you run out of stack. rms
- says that's not worth protecting against. */
- if (!NILP (Ffboundp (Qucs_set_table_for_input)))
- /* buffer is on buffer-alist, so no gcpro. */
- call1 (Qucs_set_table_for_input, buffer);
-
return buffer;
}
static struct Lisp_Overlay *
copy_overlays (struct buffer *b, struct Lisp_Overlay *list)
{
- Lisp_Object buffer;
struct Lisp_Overlay *result = NULL, *tail = NULL;
- XSETBUFFER (buffer, b);
-
for (; list; list = list->next)
{
- Lisp_Object overlay, start, end, old_overlay;
- EMACS_INT charpos;
-
- XSETMISC (old_overlay, list);
- charpos = marker_position (OVERLAY_START (old_overlay));
- start = Fmake_marker ();
- Fset_marker (start, make_number (charpos), buffer);
- XMARKER (start)->insertion_type
- = XMARKER (OVERLAY_START (old_overlay))->insertion_type;
-
- charpos = marker_position (OVERLAY_END (old_overlay));
- end = Fmake_marker ();
- Fset_marker (end, make_number (charpos), buffer);
- XMARKER (end)->insertion_type
- = XMARKER (OVERLAY_END (old_overlay))->insertion_type;
-
- overlay = allocate_misc ();
- XMISCTYPE (overlay) = Lisp_Misc_Overlay;
- OVERLAY_START (overlay) = start;
- OVERLAY_END (overlay) = end;
- OVERLAY_PLIST (overlay) = Fcopy_sequence (OVERLAY_PLIST (old_overlay));
- XOVERLAY (overlay)->next = NULL;
+ Lisp_Object overlay, start, end;
+ struct Lisp_Marker *m;
+ eassert (MARKERP (list->start));
+ m = XMARKER (list->start);
+ start = build_marker (b, m->charpos, m->bytepos);
+ XMARKER (start)->insertion_type = m->insertion_type;
+
+ eassert (MARKERP (list->end));
+ m = XMARKER (list->end);
+ end = build_marker (b, m->charpos, m->bytepos);
+ XMARKER (end)->insertion_type = m->insertion_type;
+
+ overlay = build_overlay (start, end, Fcopy_sequence (list->plist));
if (tail)
tail = tail->next = XOVERLAY (overlay);
else
return result;
}
+/* Set an appropriate overlay of B. */
+
+static void
+set_buffer_overlays_before (struct buffer *b, struct Lisp_Overlay *o)
+{
+ b->overlays_before = o;
+}
+
+static void
+set_buffer_overlays_after (struct buffer *b, struct Lisp_Overlay *o)
+{
+ b->overlays_after = o;
+}
/* Clone per-buffer values of buffer FROM.
static void
clone_per_buffer_values (struct buffer *from, struct buffer *to)
{
- Lisp_Object to_buffer;
int offset;
- XSETBUFFER (to_buffer, to);
-
- /* buffer-local Lisp variables start at `undo_list',
- tho only the ones from `name' on are GC'd normally. */
- for (offset = PER_BUFFER_VAR_OFFSET (FIRST_FIELD_PER_BUFFER);
- offset <= PER_BUFFER_VAR_OFFSET (LAST_FIELD_PER_BUFFER);
- offset += sizeof (Lisp_Object))
+ FOR_EACH_PER_BUFFER_OBJECT_AT (offset)
{
Lisp_Object obj;
if (offset == PER_BUFFER_VAR_OFFSET (name))
continue;
- obj = PER_BUFFER_VALUE (from, offset);
+ obj = per_buffer_value (from, offset);
if (MARKERP (obj) && XMARKER (obj)->buffer == from)
{
struct Lisp_Marker *m = XMARKER (obj);
- obj = Fmake_marker ();
+
+ obj = build_marker (to, m->charpos, m->bytepos);
XMARKER (obj)->insertion_type = m->insertion_type;
- set_marker_both (obj, to_buffer, m->charpos, m->bytepos);
}
- PER_BUFFER_VALUE (to, offset) = obj;
+ set_per_buffer_value (to, offset, obj);
}
memcpy (to->local_flags, from->local_flags, sizeof to->local_flags);
- to->overlays_before = copy_overlays (to, from->overlays_before);
- to->overlays_after = copy_overlays (to, from->overlays_after);
+ set_buffer_overlays_before (to, copy_overlays (to, from->overlays_before));
+ set_buffer_overlays_after (to, copy_overlays (to, from->overlays_after));
/* Get (a copy of) the alist of Lisp-level local variables of FROM
and install that in TO. */
- BVAR (to, local_var_alist) = buffer_lisp_local_variables (from, 1);
+ bset_local_var_alist (to, buffer_lisp_local_variables (from, 1));
}
base_buffer = Fget_buffer (base_buffer);
if (NILP (base_buffer))
error ("No such buffer: `%s'", SDATA (tem));
- if (NILP (BVAR (XBUFFER (base_buffer), name)))
+ if (!BUFFER_LIVE_P (XBUFFER (base_buffer)))
error ("Base buffer has been killed");
if (SCHARS (name) == 0)
b = allocate_buffer ();
+ /* No double indirection - if base buffer is indirect,
+ new buffer becomes an indirect to base's base. */
b->base_buffer = (XBUFFER (base_buffer)->base_buffer
? XBUFFER (base_buffer)->base_buffer
: XBUFFER (base_buffer));
/* Use the base buffer's text object. */
b->text = b->base_buffer->text;
+ /* We have no own text. */
+ b->indirections = -1;
+ /* Notify base buffer that we share the text now. */
+ b->base_buffer->indirections++;
+ /* Always -1 for an indirect buffer. */
+ b->window_count = -1;
b->pt = b->base_buffer->pt;
b->begv = b->base_buffer->begv;
b->newline_cache = 0;
b->width_run_cache = 0;
- BVAR (b, width_table) = Qnil;
-
- /* Put this on the chain of all buffers including killed ones. */
- b->header.next.buffer = all_buffers;
- all_buffers = b;
+ b->bidi_paragraph_cache = 0;
+ bset_width_table (b, Qnil);
name = Fcopy_sequence (name);
- STRING_SET_INTERVALS (name, NULL_INTERVAL);
- BVAR (b, name) = name;
+ set_string_intervals (name, NULL);
+ bset_name (b, name);
reset_buffer (b);
reset_buffer_local_variables (b, 1);
/* Put this in the alist of all live buffers. */
XSETBUFFER (buf, b);
- Vbuffer_alist = nconc2 (Vbuffer_alist, Fcons (Fcons (name, buf), Qnil));
+ Vbuffer_alist = nconc2 (Vbuffer_alist, list1 (Fcons (name, buf)));
- BVAR (b, mark) = Fmake_marker ();
- BVAR (b, name) = name;
+ bset_mark (b, Fmake_marker ());
/* The multibyte status belongs to the base buffer. */
- BVAR (b, enable_multibyte_characters) = BVAR (b->base_buffer, enable_multibyte_characters);
+ bset_enable_multibyte_characters
+ (b, BVAR (b->base_buffer, enable_multibyte_characters));
/* Make sure the base buffer has markers for its narrowing. */
if (NILP (BVAR (b->base_buffer, pt_marker)))
eassert (NILP (BVAR (b->base_buffer, begv_marker)));
eassert (NILP (BVAR (b->base_buffer, zv_marker)));
- BVAR (b->base_buffer, pt_marker) = Fmake_marker ();
- set_marker_both (BVAR (b->base_buffer, pt_marker), base_buffer,
- b->base_buffer->pt,
- b->base_buffer->pt_byte);
+ bset_pt_marker (b->base_buffer,
+ build_marker (b->base_buffer, b->base_buffer->pt,
+ b->base_buffer->pt_byte));
- BVAR (b->base_buffer, begv_marker) = Fmake_marker ();
- set_marker_both (BVAR (b->base_buffer, begv_marker), base_buffer,
- b->base_buffer->begv,
- b->base_buffer->begv_byte);
+ bset_begv_marker (b->base_buffer,
+ build_marker (b->base_buffer, b->base_buffer->begv,
+ b->base_buffer->begv_byte));
+
+ bset_zv_marker (b->base_buffer,
+ build_marker (b->base_buffer, b->base_buffer->zv,
+ b->base_buffer->zv_byte));
- BVAR (b->base_buffer, zv_marker) = Fmake_marker ();
- set_marker_both (BVAR (b->base_buffer, zv_marker), base_buffer,
- b->base_buffer->zv,
- b->base_buffer->zv_byte);
XMARKER (BVAR (b->base_buffer, zv_marker))->insertion_type = 1;
}
if (NILP (clone))
{
/* Give the indirect buffer markers for its narrowing. */
- BVAR (b, pt_marker) = Fmake_marker ();
- set_marker_both (BVAR (b, pt_marker), buf, b->pt, b->pt_byte);
- BVAR (b, begv_marker) = Fmake_marker ();
- set_marker_both (BVAR (b, begv_marker), buf, b->begv, b->begv_byte);
- BVAR (b, zv_marker) = Fmake_marker ();
- set_marker_both (BVAR (b, zv_marker), buf, b->zv, b->zv_byte);
+ bset_pt_marker (b, build_marker (b, b->pt, b->pt_byte));
+ bset_begv_marker (b, build_marker (b, b->begv, b->begv_byte));
+ bset_zv_marker (b, build_marker (b, b->zv, b->zv_byte));
XMARKER (BVAR (b, zv_marker))->insertion_type = 1;
}
else
struct buffer *old_b = current_buffer;
clone_per_buffer_values (b->base_buffer, b);
- BVAR (b, filename) = Qnil;
- BVAR (b, file_truename) = Qnil;
- BVAR (b, display_count) = make_number (0);
- BVAR (b, backed_up) = Qnil;
- BVAR (b, auto_save_file_name) = Qnil;
+ bset_filename (b, Qnil);
+ bset_file_truename (b, Qnil);
+ bset_display_count (b, make_number (0));
+ bset_backed_up (b, Qnil);
+ bset_auto_save_file_name (b, Qnil);
set_buffer_internal_1 (b);
Fset (intern ("buffer-save-without-query"), Qnil);
Fset (intern ("buffer-file-number"), Qnil);
return buf;
}
+/* Mark OV as no longer associated with B. */
+
+static void
+drop_overlay (struct buffer *b, struct Lisp_Overlay *ov)
+{
+ eassert (b == XBUFFER (Fmarker_buffer (ov->start)));
+ modify_overlay (b, marker_position (ov->start),
+ marker_position (ov->end));
+ Fset_marker (ov->start, Qnil, Qnil);
+ Fset_marker (ov->end, Qnil, Qnil);
+
+}
+
+/* Delete all overlays of B and reset it's overlay lists. */
+
void
delete_all_overlays (struct buffer *b)
{
- Lisp_Object overlay;
+ struct Lisp_Overlay *ov, *next;
- /* `reset_buffer' blindly sets the list of overlays to NULL, so we
- have to empty the list, otherwise we end up with overlays that
- think they belong to this buffer while the buffer doesn't know about
- them any more. */
- while (b->overlays_before)
+ /* FIXME: Since each drop_overlay will scan BUF_MARKERS to unlink its
+ markers, we have an unneeded O(N^2) behavior here. */
+ for (ov = b->overlays_before; ov; ov = next)
{
- XSETMISC (overlay, b->overlays_before);
- Fdelete_overlay (overlay);
+ drop_overlay (b, ov);
+ next = ov->next;
+ ov->next = NULL;
}
- while (b->overlays_after)
+
+ for (ov = b->overlays_after; ov; ov = next)
{
- XSETMISC (overlay, b->overlays_after);
- Fdelete_overlay (overlay);
+ drop_overlay (b, ov);
+ next = ov->next;
+ ov->next = NULL;
}
- eassert (b->overlays_before == NULL);
- eassert (b->overlays_after == NULL);
+
+ set_buffer_overlays_before (b, NULL);
+ set_buffer_overlays_after (b, NULL);
}
/* Reinitialize everything about a buffer except its name and contents
void
reset_buffer (register struct buffer *b)
{
- BVAR (b, filename) = Qnil;
- BVAR (b, file_truename) = Qnil;
- BVAR (b, directory) = (current_buffer) ? BVAR (current_buffer, directory) : Qnil;
- b->modtime = 0;
+ bset_filename (b, Qnil);
+ bset_file_truename (b, Qnil);
+ bset_directory (b, current_buffer ? BVAR (current_buffer, directory) : Qnil);
+ b->modtime = make_emacs_time (0, UNKNOWN_MODTIME_NSECS);
b->modtime_size = -1;
XSETFASTINT (BVAR (b, save_length), 0);
b->last_window_start = 1;
/* It is more conservative to start out "changed" than "unchanged". */
b->clip_changed = 0;
b->prevent_redisplay_optimizations_p = 1;
- BVAR (b, backed_up) = Qnil;
+ bset_backed_up (b, Qnil);
BUF_AUTOSAVE_MODIFF (b) = 0;
b->auto_save_failure_time = 0;
- BVAR (b, auto_save_file_name) = Qnil;
- BVAR (b, read_only) = Qnil;
- b->overlays_before = NULL;
- b->overlays_after = NULL;
+ bset_auto_save_file_name (b, Qnil);
+ bset_read_only (b, Qnil);
+ set_buffer_overlays_before (b, NULL);
+ set_buffer_overlays_after (b, NULL);
b->overlay_center = BEG;
- BVAR (b, mark_active) = Qnil;
- BVAR (b, point_before_scroll) = Qnil;
- BVAR (b, file_format) = Qnil;
- BVAR (b, auto_save_file_format) = Qt;
- BVAR (b, last_selected_window) = Qnil;
- XSETINT (BVAR (b, display_count), 0);
- BVAR (b, display_time) = Qnil;
- BVAR (b, enable_multibyte_characters) = BVAR (&buffer_defaults, enable_multibyte_characters);
- BVAR (b, cursor_type) = BVAR (&buffer_defaults, cursor_type);
- BVAR (b, extra_line_spacing) = BVAR (&buffer_defaults, extra_line_spacing);
+ bset_mark_active (b, Qnil);
+ bset_point_before_scroll (b, Qnil);
+ bset_file_format (b, Qnil);
+ bset_auto_save_file_format (b, Qt);
+ bset_last_selected_window (b, Qnil);
+ bset_display_count (b, make_number (0));
+ bset_display_time (b, Qnil);
+ bset_enable_multibyte_characters
+ (b, BVAR (&buffer_defaults, enable_multibyte_characters));
+ bset_cursor_type (b, BVAR (&buffer_defaults, cursor_type));
+ bset_extra_line_spacing (b, BVAR (&buffer_defaults, extra_line_spacing));
b->display_error_modiff = 0;
}
it does not treat permanent locals consistently.
Instead, use Fkill_all_local_variables.
- If PERMANENT_TOO is 1, then we reset permanent
- buffer-local variables. If PERMANENT_TOO is 0,
- we preserve those. */
+ If PERMANENT_TOO, reset permanent buffer-local variables.
+ If not, preserve those. */
static void
-reset_buffer_local_variables (register struct buffer *b, int permanent_too)
+reset_buffer_local_variables (struct buffer *b, bool permanent_too)
{
- register int offset;
- int i;
+ int offset, i;
/* Reset the major mode to Fundamental, together with all the
things that depend on the major mode.
default-major-mode is handled at a higher level.
We ignore it here. */
- BVAR (b, major_mode) = Qfundamental_mode;
- BVAR (b, keymap) = Qnil;
- BVAR (b, mode_name) = QSFundamental;
- BVAR (b, minor_modes) = Qnil;
+ bset_major_mode (b, Qfundamental_mode);
+ bset_keymap (b, Qnil);
+ bset_mode_name (b, QSFundamental);
+ bset_minor_modes (b, Qnil);
/* If the standard case table has been altered and invalidated,
fix up its insides first. */
&& CHAR_TABLE_P (XCHAR_TABLE (Vascii_downcase_table)->extras[2])))
Fset_standard_case_table (Vascii_downcase_table);
- BVAR (b, downcase_table) = Vascii_downcase_table;
- BVAR (b, upcase_table) = XCHAR_TABLE (Vascii_downcase_table)->extras[0];
- BVAR (b, case_canon_table) = XCHAR_TABLE (Vascii_downcase_table)->extras[1];
- BVAR (b, case_eqv_table) = XCHAR_TABLE (Vascii_downcase_table)->extras[2];
- BVAR (b, invisibility_spec) = Qt;
+ bset_downcase_table (b, Vascii_downcase_table);
+ bset_upcase_table (b, XCHAR_TABLE (Vascii_downcase_table)->extras[0]);
+ bset_case_canon_table (b, XCHAR_TABLE (Vascii_downcase_table)->extras[1]);
+ bset_case_eqv_table (b, XCHAR_TABLE (Vascii_downcase_table)->extras[2]);
+ bset_invisibility_spec (b, Qt);
/* Reset all (or most) per-buffer variables to their defaults. */
if (permanent_too)
- BVAR (b, local_var_alist) = Qnil;
+ bset_local_var_alist (b, Qnil);
else
{
Lisp_Object tmp, prop, last = Qnil;
}
/* Delete this local variable. */
else if (NILP (last))
- BVAR (b, local_var_alist) = XCDR (tmp);
+ bset_local_var_alist (b, XCDR (tmp));
else
XSETCDR (last, XCDR (tmp));
}
if (permanent_too || buffer_permanent_local_flags[i] == 0)
SET_PER_BUFFER_VALUE_P (b, i, 0);
- /* For each slot that has a default value,
- copy that into the slot. */
-
- /* buffer-local Lisp variables start at `undo_list',
- tho only the ones from `name' on are GC'd normally. */
- for (offset = PER_BUFFER_VAR_OFFSET (FIRST_FIELD_PER_BUFFER);
- offset <= PER_BUFFER_VAR_OFFSET (LAST_FIELD_PER_BUFFER);
- offset += sizeof (Lisp_Object))
+ /* For each slot that has a default value, copy that into the slot. */
+ FOR_EACH_PER_BUFFER_OBJECT_AT (offset)
{
int idx = PER_BUFFER_IDX (offset);
if ((idx > 0
&& (permanent_too
|| buffer_permanent_local_flags[idx] == 0)))
- PER_BUFFER_VALUE (b, offset) = PER_BUFFER_DEFAULT (offset);
+ set_per_buffer_value (b, offset, per_buffer_default (offset));
}
}
Otherwise modify name by appending `<NUMBER>', incrementing NUMBER
\(starting at 2) until an unused name is found, and then return that name.
Optional second argument IGNORE specifies a name that is okay to use (if
-it is in the sequence to be tried) even if a buffer with that name exists. */)
+it is in the sequence to be tried) even if a buffer with that name exists.
+
+If NAME begins with a space (i.e., a buffer that is not normally
+visible to users), then if buffer NAME already exists a random number
+is first appended to NAME, to speed up finding a non-existent buffer. */)
(register Lisp_Object name, Lisp_Object ignore)
{
- register Lisp_Object gentemp, tem;
- EMACS_INT count;
- char number[INT_BUFSIZE_BOUND (EMACS_INT) + sizeof "<>"];
+ register Lisp_Object gentemp, tem, tem2;
+ ptrdiff_t count;
+ char number[INT_BUFSIZE_BOUND (ptrdiff_t) + sizeof "<>"];
CHECK_STRING (name);
if (NILP (tem))
return name;
+ if (!strncmp (SSDATA (name), " ", 1)) /* see bug#1229 */
+ {
+ /* Note fileio.c:make_temp_name does random differently. */
+ tem2 = concat2 (name, make_formatted_string
+ (number, "-%"pI"d",
+ XFASTINT (Frandom (make_number (999999)))));
+ tem = Fget_buffer (tem2);
+ if (NILP (tem))
+ return tem2;
+ }
+ else
+ tem2 = name;
+
count = 1;
while (1)
{
- sprintf (number, "<%"pI"d>", ++count);
- gentemp = concat2 (name, build_string (number));
+ gentemp = concat2 (tem2, make_formatted_string
+ (number, "<%"pD"d>", ++count));
tem = Fstring_equal (gentemp, ignore);
if (!NILP (tem))
return gentemp;
If VARIABLE does not have a buffer-local binding in BUFFER, the value
is the default binding of the variable. */)
(register Lisp_Object variable, register Lisp_Object buffer)
+{
+ register Lisp_Object result = buffer_local_value_1 (variable, buffer);
+
+ if (EQ (result, Qunbound))
+ xsignal1 (Qvoid_variable, variable);
+
+ return result;
+}
+
+
+/* Like Fbuffer_local_value, but return Qunbound if the variable is
+ locally unbound. */
+
+Lisp_Object
+buffer_local_value_1 (Lisp_Object variable, Lisp_Object buffer)
{
register struct buffer *buf;
register Lisp_Object result;
{
union Lisp_Fwd *fwd = SYMBOL_FWD (sym);
if (BUFFER_OBJFWDP (fwd))
- result = PER_BUFFER_VALUE (buf, XBUFFER_OBJFWD (fwd)->offset);
+ result = per_buffer_value (buf, XBUFFER_OBJFWD (fwd)->offset);
else
result = Fdefault_value (variable);
break;
}
- default: abort ();
+ default: emacs_abort ();
}
- if (!EQ (result, Qunbound))
- return result;
-
- xsignal1 (Qvoid_variable, variable);
+ return result;
}
/* Return an alist of the Lisp-level buffer-local bindings of
buffer BUF. That is, don't include the variables maintained
in special slots in the buffer object.
- If CLONE is zero elements of the form (VAR . unbound) are replaced
+ If not CLONE, replace elements of the form (VAR . unbound)
by VAR. */
static Lisp_Object
-buffer_lisp_local_variables (struct buffer *buf, int clone)
+buffer_lisp_local_variables (struct buffer *buf, bool clone)
{
Lisp_Object result = Qnil;
- register Lisp_Object tail;
+ Lisp_Object tail;
for (tail = BVAR (buf, local_var_alist); CONSP (tail); tail = XCDR (tail))
{
Lisp_Object val, elt;
{
int offset, idx;
- /* buffer-local Lisp variables start at `undo_list',
- tho only the ones from `name' on are GC'd normally. */
- for (offset = PER_BUFFER_VAR_OFFSET (FIRST_FIELD_PER_BUFFER);
- offset <= PER_BUFFER_VAR_OFFSET (LAST_FIELD_PER_BUFFER);
- /* sizeof EMACS_INT == sizeof Lisp_Object */
- offset += (sizeof (EMACS_INT)))
+ FOR_EACH_PER_BUFFER_OBJECT_AT (offset)
{
idx = PER_BUFFER_IDX (offset);
if ((idx == -1 || PER_BUFFER_VALUE_P (buf, idx))
&& SYMBOLP (PER_BUFFER_SYMBOL (offset)))
{
Lisp_Object sym = PER_BUFFER_SYMBOL (offset);
- Lisp_Object val = PER_BUFFER_VALUE (buf, offset);
+ Lisp_Object val = per_buffer_value (buf, offset);
result = Fcons (EQ (val, Qunbound) ? sym : Fcons (sym, val),
result);
}
1, 1, 0,
doc: /* Mark current buffer as modified or unmodified according to FLAG.
A non-nil FLAG means mark the buffer modified. */)
- (register Lisp_Object flag)
+ (Lisp_Object flag)
{
- register int already;
- register Lisp_Object fn;
- Lisp_Object buffer, window;
+ Lisp_Object fn;
#ifdef CLASH_DETECTION
/* If buffer becoming modified, lock the file.
If buffer becoming unmodified, unlock the file. */
- fn = BVAR (current_buffer, file_truename);
+ struct buffer *b = current_buffer->base_buffer
+ ? current_buffer->base_buffer
+ : current_buffer;
+
+ fn = BVAR (b, file_truename);
/* Test buffer-file-name so that binding it to nil is effective. */
- if (!NILP (fn) && ! NILP (BVAR (current_buffer, filename)))
+ if (!NILP (fn) && ! NILP (BVAR (b, filename)))
{
- already = SAVE_MODIFF < MODIFF;
+ bool already = SAVE_MODIFF < MODIFF;
if (!already && !NILP (flag))
lock_file (fn);
else if (already && NILP (flag))
Ideally, I think there should be another mechanism for fontifying
buffers without "modifying" buffers, or redisplay should be
smarter about updating the `*' in mode lines. --gerd */
- XSETBUFFER (buffer, current_buffer);
- window = Fget_buffer_window (buffer, Qt);
- if (WINDOWP (window))
+ if (buffer_window_count (current_buffer))
{
++update_mode_lines;
current_buffer->prevent_redisplay_optimizations_p = 1;
/* Test buffer-file-name so that binding it to nil is effective. */
if (!NILP (fn) && ! NILP (BVAR (current_buffer, filename)))
{
- int already = SAVE_MODIFF < MODIFF;
+ bool already = SAVE_MODIFF < MODIFF;
if (!already && !NILP (flag))
lock_file (fn);
else if (already && NILP (flag))
error ("Buffer name `%s' is in use", SDATA (newname));
}
- BVAR (current_buffer, name) = newname;
+ bset_name (current_buffer, newname);
/* Catch redisplay's attention. Unless we do this, the mode lines for
any windows displaying current_buffer will stay unchanged. */
return BVAR (current_buffer, name);
}
+/* True if B can be used as 'other-than-BUFFER' buffer. */
+
+static bool
+candidate_buffer (Lisp_Object b, Lisp_Object buffer)
+{
+ return (BUFFERP (b) && !EQ (b, buffer)
+ && BUFFER_LIVE_P (XBUFFER (b))
+ && !BUFFER_HIDDEN_P (XBUFFER (b)));
+}
+
DEFUN ("other-buffer", Fother_buffer, Sother_buffer, 0, 3, 0,
doc: /* Return most recently selected buffer other than BUFFER.
Buffers not visible in windows are preferred to visible buffers, unless
exists, return the buffer `*scratch*' (creating it if necessary). */)
(register Lisp_Object buffer, Lisp_Object visible_ok, Lisp_Object frame)
{
- Lisp_Object Fset_buffer_major_mode (Lisp_Object buffer);
- Lisp_Object tail, buf, pred;
- Lisp_Object notsogood = Qnil;
-
- if (NILP (frame))
- frame = selected_frame;
+ struct frame *f = decode_any_frame (frame);
+ Lisp_Object tail = f->buffer_list, pred = f->buffer_predicate;
+ Lisp_Object buf, notsogood = Qnil;
- CHECK_FRAME (frame);
-
- pred = frame_buffer_predicate (frame);
/* Consider buffers that have been seen in the frame first. */
- tail = XFRAME (frame)->buffer_list;
for (; CONSP (tail); tail = XCDR (tail))
{
buf = XCAR (tail);
- if (BUFFERP (buf) && !EQ (buf, buffer)
- && !NILP (BVAR (XBUFFER (buf), name))
- && (SREF (BVAR (XBUFFER (buf), name), 0) != ' ')
+ if (candidate_buffer (buf, buffer)
/* If the frame has a buffer_predicate, disregard buffers that
don't fit the predicate. */
&& (NILP (pred) || !NILP (call1 (pred, buf))))
}
/* Consider alist of all buffers next. */
- tail = Vbuffer_alist;
- for (; CONSP (tail); tail = XCDR (tail))
+ FOR_EACH_LIVE_BUFFER (tail, buf)
{
- buf = Fcdr (XCAR (tail));
- if (BUFFERP (buf) && !EQ (buf, buffer)
- && !NILP (BVAR (XBUFFER (buf), name))
- && (SREF (BVAR (XBUFFER (buf), name), 0) != ' ')
+ if (candidate_buffer (buf, buffer)
/* If the frame has a buffer_predicate, disregard buffers that
don't fit the predicate. */
&& (NILP (pred) || !NILP (call1 (pred, buf))))
Lisp_Object
other_buffer_safely (Lisp_Object buffer)
{
- Lisp_Object Fset_buffer_major_mode (Lisp_Object buffer);
Lisp_Object tail, buf;
- tail = Vbuffer_alist;
- for (; CONSP (tail); tail = XCDR (tail))
- {
- buf = Fcdr (XCAR (tail));
- if (BUFFERP (buf) && !EQ (buf, buffer)
- && !NILP (BVAR (XBUFFER (buf), name))
- && (SREF (BVAR (XBUFFER (buf), name), 0) != ' '))
- return buf;
- }
+ FOR_EACH_LIVE_BUFFER (tail, buf)
+ if (candidate_buffer (buf, buffer))
+ return buf;
buf = Fget_buffer (build_string ("*scratch*"));
if (NILP (buf))
}
if (EQ (BVAR (XBUFFER (real_buffer), undo_list), Qt))
- BVAR (XBUFFER (real_buffer), undo_list) = Qnil;
+ bset_undo_list (XBUFFER (real_buffer), Qnil);
return Qnil;
}
-/*
- DEFVAR_LISP ("kill-buffer-hook", ..., "\
-Hook to be run (by `run-hooks', which see) when a buffer is killed.\n\
-The buffer being killed will be current while the hook is running.\n\
-See `kill-buffer'."
- */
+/* Truncate undo list and shrink the gap of BUFFER. */
+
+void
+compact_buffer (struct buffer *buffer)
+{
+ BUFFER_CHECK_INDIRECTION (buffer);
+
+ /* Skip dead buffers, indirect buffers and buffers
+ which aren't changed since last compaction. */
+ if (BUFFER_LIVE_P (buffer)
+ && (buffer->base_buffer == NULL)
+ && (BUF_COMPACT (buffer) != BUF_MODIFF (buffer)))
+ {
+ /* If a buffer's undo list is Qt, that means that undo is
+ turned off in that buffer. Calling truncate_undo_list on
+ Qt tends to return NULL, which effectively turns undo back on.
+ So don't call truncate_undo_list if undo_list is Qt. */
+ if (!EQ (buffer->INTERNAL_FIELD (undo_list), Qt))
+ truncate_undo_list (buffer);
+
+ /* Shrink buffer gaps. */
+ if (!buffer->text->inhibit_shrinking)
+ {
+ /* If a buffer's gap size is more than 10% of the buffer
+ size, or larger than GAP_BYTES_DFL bytes, then shrink it
+ accordingly. Keep a minimum size of GAP_BYTES_MIN bytes. */
+ ptrdiff_t size = clip_to_bounds (GAP_BYTES_MIN,
+ BUF_Z_BYTE (buffer) / 10,
+ GAP_BYTES_DFL);
+ if (BUF_GAP_SIZE (buffer) > size)
+ make_gap_1 (buffer, -(BUF_GAP_SIZE (buffer) - size));
+ }
+ BUF_COMPACT (buffer) = BUF_MODIFF (buffer);
+ }
+}
+
DEFUN ("kill-buffer", Fkill_buffer, Skill_buffer, 0, 1, "bKill buffer: ",
- doc: /* Kill buffer BUFFER-OR-NAME.
+ doc: /* Kill the buffer specified by BUFFER-OR-NAME.
The argument may be a buffer or the name of an existing buffer.
Argument nil or omitted means kill the current buffer. Return t if the
buffer is actually killed, nil otherwise.
-This function calls `replace-buffer-in-windows' for cleaning up all
-windows currently displaying the buffer to be killed. The functions in
-`kill-buffer-query-functions' are called with the buffer to be killed as
-the current buffer. If any of them returns nil, the buffer is not
-killed. The hook `kill-buffer-hook' is run before the buffer is
-actually killed. The buffer being killed will be current while the hook
-is running.
+The functions in `kill-buffer-query-functions' are called with the
+buffer to be killed as the current buffer. If any of them returns nil,
+the buffer is not killed. The hook `kill-buffer-hook' is run before the
+buffer is actually killed. The buffer being killed will be current
+while the hook is running. Functions called by any of these hooks are
+supposed to not change the current buffer.
Any processes that have this buffer as the `process-buffer' are killed
-with SIGHUP. */)
+with SIGHUP. This function calls `replace-buffer-in-windows' for
+cleaning up all windows currently displaying the buffer to be killed. */)
(Lisp_Object buffer_or_name)
{
Lisp_Object buffer;
b = XBUFFER (buffer);
/* Avoid trouble for buffer already dead. */
- if (NILP (BVAR (b, name)))
+ if (!BUFFER_LIVE_P (b))
return Qnil;
- /* Query if the buffer is still modified. */
- if (INTERACTIVE && !NILP (BVAR (b, filename))
- && BUF_MODIFF (b) > BUF_SAVE_MODIFF (b))
- {
- GCPRO1 (buffer);
- tem = do_yes_or_no_p (format2 ("Buffer %s modified; kill anyway? ",
- BVAR (b, name), make_number (0)));
- UNGCPRO;
- if (NILP (tem))
- return Qnil;
- }
-
/* Run hooks with the buffer to be killed the current buffer. */
{
- int count = SPECPDL_INDEX ();
+ ptrdiff_t count = SPECPDL_INDEX ();
Lisp_Object arglist[1];
record_unwind_protect (save_excursion_restore, save_excursion_save ());
if (NILP (tem))
return unbind_to (count, Qnil);
+ /* Query if the buffer is still modified. */
+ if (INTERACTIVE && !NILP (BVAR (b, filename))
+ && BUF_MODIFF (b) > BUF_SAVE_MODIFF (b))
+ {
+ GCPRO1 (buffer);
+ tem = do_yes_or_no_p (format2 ("Buffer %s modified; kill anyway? ",
+ BVAR (b, name), make_number (0)));
+ UNGCPRO;
+ if (NILP (tem))
+ return unbind_to (count, Qnil);
+ }
+
+ /* If the hooks have killed the buffer, exit now. */
+ if (!BUFFER_LIVE_P (b))
+ return unbind_to (count, Qt);
+
/* Then run the hooks. */
Frun_hooks (1, &Qkill_buffer_hook);
unbind_to (count, Qnil);
}
+ /* If the hooks have killed the buffer, exit now. */
+ if (!BUFFER_LIVE_P (b))
+ return Qt;
+
/* We have no more questions to ask. Verify that it is valid
to kill the buffer. This must be done after the questions
since anything can happen within do_yes_or_no_p. */
/* Don't kill the minibuffer now current. */
- if (EQ (buffer, XWINDOW (minibuf_window)->buffer))
- return Qnil;
-
- if (NILP (BVAR (b, name)))
+ if (EQ (buffer, XWINDOW (minibuf_window)->contents))
return Qnil;
- /* When we kill a base buffer, kill all its indirect buffers.
+ /* When we kill an ordinary buffer which shares it's buffer text
+ with indirect buffer(s), we must kill indirect buffer(s) too.
We do it at this stage so nothing terrible happens if they
ask questions or their hooks get errors. */
- if (! b->base_buffer)
+ if (!b->base_buffer && b->indirections > 0)
{
struct buffer *other;
GCPRO1 (buffer);
- for (other = all_buffers; other; other = other->header.next.buffer)
- /* all_buffers contains dead buffers too;
- don't re-kill them. */
- if (other->base_buffer == b && !NILP (BVAR (other, name)))
+ FOR_EACH_BUFFER (other)
+ if (other->base_buffer == b)
{
Lisp_Object buf;
XSETBUFFER (buf, other);
}
UNGCPRO;
+
+ /* Exit if we now have killed the base buffer (Bug#11665). */
+ if (!BUFFER_LIVE_P (b))
+ return Qt;
}
/* Run replace_buffer_in_windows before making another buffer current
buffer. (Bug#10114) */
replace_buffer_in_windows (buffer);
- /* Make this buffer not be current.
- In the process, notice if this is the sole visible buffer
- and give up if so. */
+ /* Exit if replacing the buffer in windows has killed our buffer. */
+ if (!BUFFER_LIVE_P (b))
+ return Qt;
+
+ /* Make this buffer not be current. Exit if it is the sole visible
+ buffer. */
if (b == current_buffer)
{
tem = Fother_buffer (buffer, Qnil, Qnil);
return Qnil;
}
- /* Notice if the buffer to kill is the sole visible buffer
- when we're currently in the mini-buffer, and give up if so. */
+ /* If the buffer now current is shown in the minibuffer and our buffer
+ is the sole other buffer give up. */
XSETBUFFER (tem, current_buffer);
- if (EQ (tem, XWINDOW (minibuf_window)->buffer))
- {
- tem = Fother_buffer (buffer, Qnil, Qnil);
- if (EQ (buffer, tem))
- return Qnil;
- }
+ if (EQ (tem, XWINDOW (minibuf_window)->contents)
+ && EQ (buffer, Fother_buffer (buffer, Qnil, Qnil)))
+ return Qnil;
/* Now there is no question: we can kill the buffer. */
kill_buffer_processes (buffer);
UNGCPRO;
- /* Killing buffer processes may run sentinels which may
- have called kill-buffer. */
-
- if (NILP (BVAR (b, name)))
- return Qnil;
+ /* Killing buffer processes may run sentinels which may have killed
+ our buffer. */
+ if (!BUFFER_LIVE_P (b))
+ return Qt;
/* These may run Lisp code and into infinite loops (if someone
insisted on circular lists) so allow quitting here. */
Vinhibit_quit = Qt;
/* Remove the buffer from the list of all buffers. */
Vbuffer_alist = Fdelq (Frassq (buffer, Vbuffer_alist), Vbuffer_alist);
- /* If replace_buffer_in_windows didn't do its job correctly fix that
- now. */
+ /* If replace_buffer_in_windows didn't do its job fix that now. */
replace_buffer_in_windows_safely (buffer);
Vinhibit_quit = tem;
internal_delete_file (BVAR (b, auto_save_file_name));
}
+ /* Deleting an auto-save file could have killed our buffer. */
+ if (!BUFFER_LIVE_P (b))
+ return Qt;
+
if (b->base_buffer)
{
/* Unchain all markers that belong to this indirect buffer.
Don't unchain the markers that belong to the base buffer
or its other indirect buffers. */
- for (m = BUF_MARKERS (b); m; )
+ struct Lisp_Marker **mp = &BUF_MARKERS (b);
+ while ((m = *mp))
{
- struct Lisp_Marker *next = m->next;
if (m->buffer == b)
- unchain_marker (m);
- m = next;
+ {
+ m->buffer = NULL;
+ *mp = m->next;
+ }
+ else
+ mp = &m->next;
}
}
else
m = next;
}
BUF_MARKERS (b) = NULL;
- BUF_INTERVALS (b) = NULL_INTERVAL;
+ set_buffer_intervals (b, NULL);
- /* Perhaps we should explicitly free the interval tree here... */
+ /* Perhaps we should explicitly free the interval tree here... */
}
+ /* Since we've unlinked the markers, the overlays can't be here any more
+ either. */
+ b->overlays_before = NULL;
+ b->overlays_after = NULL;
/* Reset the local variables, so that this buffer's local values
won't be protected from GC. They would be protected
swap_out_buffer_local_variables (b);
reset_buffer_local_variables (b, 1);
- BVAR (b, name) = Qnil;
+ bset_name (b, Qnil);
- BLOCK_INPUT;
- if (! b->base_buffer)
- free_buffer_text (b);
+ block_input ();
+ if (b->base_buffer)
+ {
+ /* Notify our base buffer that we don't share the text anymore. */
+ eassert (b->indirections == -1);
+ b->base_buffer->indirections--;
+ eassert (b->base_buffer->indirections >= 0);
+ /* Make sure that we wasn't confused. */
+ eassert (b->window_count == -1);
+ }
+ else
+ {
+ /* Make sure that no one shows us. */
+ eassert (b->window_count == 0);
+ /* No one shares our buffer text, can free it. */
+ free_buffer_text (b);
+ }
if (b->newline_cache)
{
free_region_cache (b->width_run_cache);
b->width_run_cache = 0;
}
- BVAR (b, width_table) = Qnil;
- UNBLOCK_INPUT;
- BVAR (b, undo_list) = Qnil;
+ if (b->bidi_paragraph_cache)
+ {
+ free_region_cache (b->bidi_paragraph_cache);
+ b->bidi_paragraph_cache = 0;
+ }
+ bset_width_table (b, Qnil);
+ unblock_input ();
+ bset_undo_list (b, Qnil);
/* Run buffer-list-update-hook. */
if (!NILP (Vrun_hooks))
Vinhibit_quit = tem;
/* Update buffer list of selected frame. */
- f->buffer_list = Fcons (buffer, Fdelq (buffer, f->buffer_list));
- f->buried_buffer_list = Fdelq (buffer, f->buried_buffer_list);
+ fset_buffer_list (f, Fcons (buffer, Fdelq (buffer, f->buffer_list)));
+ fset_buried_buffer_list (f, Fdelq (buffer, f->buried_buffer_list));
/* Run buffer-list-update-hook. */
if (!NILP (Vrun_hooks))
Vinhibit_quit = tem;
/* Update buffer lists of selected frame. */
- f->buffer_list = Fdelq (buffer, f->buffer_list);
- f->buried_buffer_list = Fcons (buffer, Fdelq (buffer, f->buried_buffer_list));
+ fset_buffer_list (f, Fdelq (buffer, f->buffer_list));
+ fset_buried_buffer_list
+ (f, Fcons (buffer, Fdelq (buffer, f->buried_buffer_list)));
/* Run buffer-list-update-hook. */
if (!NILP (Vrun_hooks))
DEFUN ("set-buffer-major-mode", Fset_buffer_major_mode, Sset_buffer_major_mode, 1, 1, 0,
doc: /* Set an appropriate major mode for BUFFER.
For the *scratch* buffer, use `initial-major-mode', otherwise choose a mode
-according to `default-major-mode'.
+according to the default value of `major-mode'.
Use this function before selecting the buffer, since it may need to inspect
the current buffer's major mode. */)
(Lisp_Object buffer)
{
- int count;
+ ptrdiff_t count;
Lisp_Object function;
CHECK_BUFFER (buffer);
- if (STRINGP (BVAR (XBUFFER (buffer), name))
- && strcmp (SSDATA (BVAR (XBUFFER (buffer), name)), "*scratch*") == 0)
+ if (!BUFFER_LIVE_P (XBUFFER (buffer)))
+ error ("Attempt to set major mode for a dead buffer");
+
+ if (strcmp (SSDATA (BVAR (XBUFFER (buffer), name)), "*scratch*") == 0)
function = find_symbol_value (intern ("initial-major-mode"));
else
{
XSETBUFFER (buf, current_buffer);
return buf;
}
-\f
-/* Set the current buffer to B.
-
- We previously set windows_or_buffers_changed here to invalidate
- global unchanged information in beg_unchanged and end_unchanged.
- This is no longer necessary because we now compute unchanged
- information on a buffer-basis. Every action affecting other
- windows than the selected one requires a select_window at some
- time, and that increments windows_or_buffers_changed. */
-
-void
-set_buffer_internal (register struct buffer *b)
-{
- if (current_buffer != b)
- set_buffer_internal_1 (b);
-}
/* Set the current buffer to B, and do not set windows_or_buffers_changed.
This is used by redisplay. */
if (current_buffer == b)
return;
+ BUFFER_CHECK_INDIRECTION (b);
+
old_buf = current_buffer;
current_buffer = b;
last_known_column_point = -1; /* invalidate indentation cache */
/* Put the undo list back in the base buffer, so that it appears
that an indirect buffer shares the undo list of its base. */
if (old_buf->base_buffer)
- BVAR (old_buf->base_buffer, undo_list) = BVAR (old_buf, undo_list);
+ bset_undo_list (old_buf->base_buffer, BVAR (old_buf, undo_list));
/* If the old current buffer has markers to record PT, BEGV and ZV
when it is not current, update them now. */
/* Get the undo list from the base buffer, so that it appears
that an indirect buffer shares the undo list of its base. */
if (b->base_buffer)
- BVAR (b, undo_list) = BVAR (b->base_buffer, undo_list);
+ bset_undo_list (b, BVAR (b->base_buffer, undo_list));
/* If the new current buffer has markers to record PT, BEGV and ZV
when it is not current, fetch them now. */
DEFUN ("set-buffer", Fset_buffer, Sset_buffer, 1, 1, 0,
doc: /* Make buffer BUFFER-OR-NAME current for editing operations.
BUFFER-OR-NAME may be a buffer or the name of an existing buffer. See
-also `save-excursion' when you want to make a buffer current
+also `with-current-buffer' when you want to make a buffer current
temporarily. This function does not display the buffer, so its effect
ends when the current command terminates. Use `switch-to-buffer' or
`pop-to-buffer' to switch buffers permanently. */)
buffer = Fget_buffer (buffer_or_name);
if (NILP (buffer))
nsberror (buffer_or_name);
- if (NILP (BVAR (XBUFFER (buffer), name)))
+ if (!BUFFER_LIVE_P (XBUFFER (buffer)))
error ("Selecting deleted buffer");
set_buffer_internal (XBUFFER (buffer));
return buffer;
}
-/* Set the current buffer to BUFFER provided it is alive. */
+void
+restore_buffer (Lisp_Object buffer_or_name)
+{
+ Fset_buffer (buffer_or_name);
+}
-Lisp_Object
+/* Set the current buffer to BUFFER provided if it is alive. */
+
+void
set_buffer_if_live (Lisp_Object buffer)
{
- if (! NILP (BVAR (XBUFFER (buffer), name)))
- Fset_buffer (buffer);
- return Qnil;
+ if (BUFFER_LIVE_P (XBUFFER (buffer)))
+ set_buffer_internal (XBUFFER (buffer));
}
\f
DEFUN ("barf-if-buffer-read-only", Fbarf_if_buffer_read_only,
tem = *b; *b = *e; *e = tem;
}
- if (!(BEGV <= XINT (*b) && XINT (*b) <= XINT (*e)
- && XINT (*e) <= ZV))
+ if (! (BEGV <= XINT (*b) && XINT (*e) <= ZV))
args_out_of_range (*b, *e);
}
\f
/* Advance BYTE_POS up to a character boundary
and return the adjusted position. */
-static EMACS_INT
-advance_to_char_boundary (EMACS_INT byte_pos)
+static ptrdiff_t
+advance_to_char_boundary (ptrdiff_t byte_pos)
{
int c;
{
/* We should advance BYTE_POS only when C is a constituent of a
multibyte sequence. */
- EMACS_INT orig_byte_pos = byte_pos;
+ ptrdiff_t orig_byte_pos = byte_pos;
do
{
CHECK_BUFFER (buffer);
other_buffer = XBUFFER (buffer);
- if (NILP (BVAR (other_buffer, name)))
+ if (!BUFFER_LIVE_P (other_buffer))
error ("Cannot swap a dead buffer's text");
/* Actually, it probably works just fine.
{ /* This is probably harder to make work. */
struct buffer *other;
- for (other = all_buffers; other; other = other->header.next.buffer)
+ FOR_EACH_BUFFER (other)
if (other->base_buffer == other_buffer
|| other->base_buffer == current_buffer)
error ("One of the buffers to swap has indirect buffers");
#define swapfield_(field, type) \
do { \
type tmp##field = BVAR (other_buffer, field); \
- BVAR (other_buffer, field) = BVAR (current_buffer, field); \
- BVAR (current_buffer, field) = tmp##field; \
+ bset_##field (other_buffer, BVAR (current_buffer, field)); \
+ bset_##field (current_buffer, tmp##field); \
} while (0)
swapfield (own_text, struct buffer_text);
eassert (current_buffer->text == ¤t_buffer->own_text);
eassert (other_buffer->text == &other_buffer->own_text);
#ifdef REL_ALLOC
- r_alloc_reset_variable ((POINTER_TYPE **) ¤t_buffer->own_text.beg,
- (POINTER_TYPE **) &other_buffer->own_text.beg);
- r_alloc_reset_variable ((POINTER_TYPE **) &other_buffer->own_text.beg,
- (POINTER_TYPE **) ¤t_buffer->own_text.beg);
+ r_alloc_reset_variable ((void **) ¤t_buffer->own_text.beg,
+ (void **) &other_buffer->own_text.beg);
+ r_alloc_reset_variable ((void **) &other_buffer->own_text.beg,
+ (void **) ¤t_buffer->own_text.beg);
#endif /* REL_ALLOC */
- swapfield (pt, EMACS_INT);
- swapfield (pt_byte, EMACS_INT);
- swapfield (begv, EMACS_INT);
- swapfield (begv_byte, EMACS_INT);
- swapfield (zv, EMACS_INT);
- swapfield (zv_byte, EMACS_INT);
+ swapfield (pt, ptrdiff_t);
+ swapfield (pt_byte, ptrdiff_t);
+ swapfield (begv, ptrdiff_t);
+ swapfield (begv_byte, ptrdiff_t);
+ swapfield (zv, ptrdiff_t);
+ swapfield (zv_byte, ptrdiff_t);
eassert (!current_buffer->base_buffer);
eassert (!other_buffer->base_buffer);
+ swapfield (indirections, ptrdiff_t);
current_buffer->clip_changed = 1; other_buffer->clip_changed = 1;
swapfield (newline_cache, struct region_cache *);
swapfield (width_run_cache, struct region_cache *);
+ swapfield (bidi_paragraph_cache, struct region_cache *);
current_buffer->prevent_redisplay_optimizations_p = 1;
other_buffer->prevent_redisplay_optimizations_p = 1;
swapfield (overlays_before, struct Lisp_Overlay *);
swapfield (overlays_after, struct Lisp_Overlay *);
- swapfield (overlay_center, EMACS_INT);
+ swapfield (overlay_center, ptrdiff_t);
swapfield_ (undo_list, Lisp_Object);
swapfield_ (mark, Lisp_Object);
swapfield_ (enable_multibyte_characters, Lisp_Object);
swapfield_ (pt_marker, Lisp_Object);
swapfield_ (begv_marker, Lisp_Object);
swapfield_ (zv_marker, Lisp_Object);
- BVAR (current_buffer, point_before_scroll) = Qnil;
- BVAR (other_buffer, point_before_scroll) = Qnil;
+ bset_point_before_scroll (current_buffer, Qnil);
+ bset_point_before_scroll (other_buffer, Qnil);
current_buffer->text->modiff++; other_buffer->text->modiff++;
current_buffer->text->chars_modiff++; other_buffer->text->chars_modiff++;
BUF_MARKERS(buf) should either be for `buf' or dead. */
eassert (!m->buffer);
}
- { /* Some of the C code expects that w->buffer == w->pointm->buffer.
- So since we just swapped the markers between the two buffers, we need
+ { /* Some of the C code expects that both window markers of a
+ live window points to that window's buffer. So since we
+ just swapped the markers between the two buffers, we need
to undo the effect of this swap for window markers. */
- Lisp_Object w = Fselected_window (), ws = Qnil;
+ Lisp_Object w = selected_window, ws = Qnil;
Lisp_Object buf1, buf2;
XSETBUFFER (buf1, current_buffer); XSETBUFFER (buf2, other_buffer);
{
ws = Fcons (w, ws);
if (MARKERP (XWINDOW (w)->pointm)
- && (EQ (XWINDOW (w)->buffer, buf1)
- || EQ (XWINDOW (w)->buffer, buf2)))
+ && (EQ (XWINDOW (w)->contents, buf1)
+ || EQ (XWINDOW (w)->contents, buf2)))
Fset_marker (XWINDOW (w)->pointm,
- make_number (BUF_BEGV (XBUFFER (XWINDOW (w)->buffer))),
- XWINDOW (w)->buffer);
+ make_number
+ (BUF_BEGV (XBUFFER (XWINDOW (w)->contents))),
+ XWINDOW (w)->contents);
+ if (MARKERP (XWINDOW (w)->start)
+ && (EQ (XWINDOW (w)->contents, buf1)
+ || EQ (XWINDOW (w)->contents, buf2)))
+ Fset_marker (XWINDOW (w)->start,
+ make_number
+ (XBUFFER (XWINDOW (w)->contents)->last_window_start),
+ XWINDOW (w)->contents);
w = Fnext_window (w, Qt, Qt);
}
}
{
struct Lisp_Marker *tail, *markers;
struct buffer *other;
- EMACS_INT begv, zv;
- int narrowed = (BEG != BEGV || Z != ZV);
- int modified_p = !NILP (Fbuffer_modified_p (Qnil));
+ ptrdiff_t begv, zv;
+ bool narrowed = (BEG != BEGV || Z != ZV);
+ bool modified_p = !NILP (Fbuffer_modified_p (Qnil));
Lisp_Object old_undo = BVAR (current_buffer, undo_list);
struct gcpro gcpro1;
/* Don't record these buffer changes. We will put a special undo entry
instead. */
- BVAR (current_buffer, undo_list) = Qt;
+ bset_undo_list (current_buffer, Qt);
/* If the cached position is for this buffer, clear it out. */
clear_charpos_cache (current_buffer);
begv = BEGV, zv = ZV;
if (narrowed)
- Fwiden ();
+ error ("Changing multibyteness in a narrowed buffer");
if (NILP (flag))
{
- EMACS_INT pos, stop;
+ ptrdiff_t pos, stop;
unsigned char *p;
/* Do this first, so it can use CHAR_TO_BYTE
to calculate the old correspondences. */
set_intervals_multibyte (0);
- BVAR (current_buffer, enable_multibyte_characters) = Qnil;
+ bset_enable_multibyte_characters (current_buffer, Qnil);
Z = Z_BYTE;
BEGV = BEGV_BYTE;
}
else
{
- EMACS_INT pt = PT;
- EMACS_INT pos, stop;
+ ptrdiff_t pt = PT;
+ ptrdiff_t pos, stop;
unsigned char *p, *pend;
/* Be sure not to have a multibyte sequence striding over the GAP.
while (! CHAR_HEAD_P (*q) && q > BEG_ADDR) q--;
if (LEADING_CODE_P (*q))
{
- EMACS_INT new_gpt = GPT_BYTE - (GPT_ADDR - q);
+ ptrdiff_t new_gpt = GPT_BYTE - (GPT_ADDR - q);
move_gap_both (new_gpt, new_gpt);
}
/* Do this first, so that chars_in_text asks the right question.
set_intervals_multibyte needs it too. */
- BVAR (current_buffer, enable_multibyte_characters) = Qt;
+ bset_enable_multibyte_characters (current_buffer, Qt);
GPT_BYTE = advance_to_char_boundary (GPT_BYTE);
GPT = chars_in_text (BEG_ADDR, GPT_BYTE - BEG_BYTE) + BEG;
ZV = chars_in_text (BEG_ADDR, ZV_BYTE - BEG_BYTE) + BEG;
{
- EMACS_INT byte = advance_to_char_boundary (PT_BYTE);
- EMACS_INT position;
+ ptrdiff_t byte = advance_to_char_boundary (PT_BYTE);
+ ptrdiff_t position;
if (byte > GPT_BYTE)
position = chars_in_text (GAP_END_ADDR, byte - GPT_BYTE) + GPT;
/* Make sure no markers were put on the chain
while the chain value was incorrect. */
if (BUF_MARKERS (current_buffer))
- abort ();
+ emacs_abort ();
BUF_MARKERS (current_buffer) = markers;
if (!EQ (old_undo, Qt))
{
/* Represent all the above changes by a special undo entry. */
- BVAR (current_buffer, undo_list) = Fcons (list3 (Qapply,
- intern ("set-buffer-multibyte"),
- NILP (flag) ? Qt : Qnil),
- old_undo);
+ bset_undo_list (current_buffer,
+ Fcons (list3 (Qapply,
+ intern ("set-buffer-multibyte"),
+ NILP (flag) ? Qt : Qnil),
+ old_undo));
}
UNGCPRO;
- /* Changing the multibyteness of a buffer means that all windows
- showing that buffer must be updated thoroughly. */
current_buffer->prevent_redisplay_optimizations_p = 1;
- ++windows_or_buffers_changed;
+
+ /* If buffer is shown in a window, let redisplay consider other windows. */
+ if (buffer_window_count (current_buffer))
+ ++windows_or_buffers_changed;
/* Copy this buffer's new multibyte status
into all of its indirect buffers. */
- for (other = all_buffers; other; other = other->header.next.buffer)
- if (other->base_buffer == current_buffer && !NILP (BVAR (other, name)))
+ FOR_EACH_BUFFER (other)
+ if (other->base_buffer == current_buffer && BUFFER_LIVE_P (other))
{
BVAR (other, enable_multibyte_characters)
= BVAR (current_buffer, enable_multibyte_characters);
*VEC_PTR and *LEN_PTR should contain a valid vector and size
when this function is called.
- If EXTEND is non-zero, we make the vector bigger if necessary.
- If EXTEND is zero, we never extend the vector,
- and we store only as many overlays as will fit.
- But we still return the total number of overlays.
+ If EXTEND, make the vector bigger if necessary.
+ If not, never extend the vector,
+ and store only as many overlays as will fit.
+ But still return the total number of overlays.
- If CHANGE_REQ is true, then any position written into *PREV_PTR or
+ If CHANGE_REQ, any position written into *PREV_PTR or
*NEXT_PTR is guaranteed to be not equal to POS, unless it is the
default (BEGV or ZV). */
ptrdiff_t
-overlays_at (EMACS_INT pos, int extend, Lisp_Object **vec_ptr,
+overlays_at (EMACS_INT pos, bool extend, Lisp_Object **vec_ptr,
ptrdiff_t *len_ptr,
- EMACS_INT *next_ptr, EMACS_INT *prev_ptr, int change_req)
+ ptrdiff_t *next_ptr, ptrdiff_t *prev_ptr, bool change_req)
{
Lisp_Object overlay, start, end;
struct Lisp_Overlay *tail;
ptrdiff_t idx = 0;
ptrdiff_t len = *len_ptr;
Lisp_Object *vec = *vec_ptr;
- EMACS_INT next = ZV;
- EMACS_INT prev = BEGV;
- int inhibit_storing = 0;
+ ptrdiff_t next = ZV;
+ ptrdiff_t prev = BEGV;
+ bool inhibit_storing = 0;
for (tail = current_buffer->overlays_before; tail; tail = tail->next)
{
- EMACS_INT startpos, endpos;
+ ptrdiff_t startpos, endpos;
XSETMISC (overlay, tail);
for (tail = current_buffer->overlays_after; tail; tail = tail->next)
{
- EMACS_INT startpos, endpos;
+ ptrdiff_t startpos, endpos;
XSETMISC (overlay, tail);
*VEC_PTR and *LEN_PTR should contain a valid vector and size
when this function is called.
- If EXTEND is non-zero, we make the vector bigger if necessary.
- If EXTEND is zero, we never extend the vector,
- and we store only as many overlays as will fit.
- But we still return the total number of overlays. */
+ If EXTEND, make the vector bigger if necessary.
+ If not, never extend the vector,
+ and store only as many overlays as will fit.
+ But still return the total number of overlays. */
static ptrdiff_t
-overlays_in (EMACS_INT beg, EMACS_INT end, int extend,
+overlays_in (EMACS_INT beg, EMACS_INT end, bool extend,
Lisp_Object **vec_ptr, ptrdiff_t *len_ptr,
- EMACS_INT *next_ptr, EMACS_INT *prev_ptr)
+ ptrdiff_t *next_ptr, ptrdiff_t *prev_ptr)
{
Lisp_Object overlay, ostart, oend;
struct Lisp_Overlay *tail;
ptrdiff_t idx = 0;
ptrdiff_t len = *len_ptr;
Lisp_Object *vec = *vec_ptr;
- EMACS_INT next = ZV;
- EMACS_INT prev = BEGV;
- int inhibit_storing = 0;
- int end_is_Z = end == Z;
+ ptrdiff_t next = ZV;
+ ptrdiff_t prev = BEGV;
+ bool inhibit_storing = 0;
+ bool end_is_Z = end == Z;
for (tail = current_buffer->overlays_before; tail; tail = tail->next)
{
- EMACS_INT startpos, endpos;
+ ptrdiff_t startpos, endpos;
XSETMISC (overlay, tail);
for (tail = current_buffer->overlays_after; tail; tail = tail->next)
{
- EMACS_INT startpos, endpos;
+ ptrdiff_t startpos, endpos;
XSETMISC (overlay, tail);
}
-/* Return non-zero if there exists an overlay with a non-nil
+/* Return true if there exists an overlay with a non-nil
`mouse-face' property overlapping OVERLAY. */
-int
+bool
mouse_face_overlay_overlaps (Lisp_Object overlay)
{
- EMACS_INT start = OVERLAY_POSITION (OVERLAY_START (overlay));
- EMACS_INT end = OVERLAY_POSITION (OVERLAY_END (overlay));
+ ptrdiff_t start = OVERLAY_POSITION (OVERLAY_START (overlay));
+ ptrdiff_t end = OVERLAY_POSITION (OVERLAY_END (overlay));
ptrdiff_t n, i, size;
Lisp_Object *v, tem;
size = 10;
- v = (Lisp_Object *) alloca (size * sizeof *v);
+ v = alloca (size * sizeof *v);
n = overlays_in (start, end, 0, &v, &size, NULL, NULL);
if (n > size)
{
- v = (Lisp_Object *) alloca (n * sizeof *v);
+ v = alloca (n * sizeof *v);
overlays_in (start, end, 0, &v, &n, NULL, NULL);
}
\f
/* Fast function to just test if we're at an overlay boundary. */
-int
-overlay_touches_p (EMACS_INT pos)
+bool
+overlay_touches_p (ptrdiff_t pos)
{
Lisp_Object overlay;
struct Lisp_Overlay *tail;
for (tail = current_buffer->overlays_before; tail; tail = tail->next)
{
- EMACS_INT endpos;
+ ptrdiff_t endpos;
XSETMISC (overlay ,tail);
- if (!OVERLAYP (overlay))
- abort ();
+ eassert (OVERLAYP (overlay));
endpos = OVERLAY_POSITION (OVERLAY_END (overlay));
if (endpos < pos)
for (tail = current_buffer->overlays_after; tail; tail = tail->next)
{
- EMACS_INT startpos;
+ ptrdiff_t startpos;
XSETMISC (overlay, tail);
- if (!OVERLAYP (overlay))
- abort ();
+ eassert (OVERLAYP (overlay));
startpos = OVERLAY_POSITION (OVERLAY_START (overlay));
if (pos < startpos)
struct sortvec
{
Lisp_Object overlay;
- EMACS_INT beg, end;
+ ptrdiff_t beg, end;
EMACS_INT priority;
};
static int
compare_overlays (const void *v1, const void *v2)
{
- const struct sortvec *s1 = (const struct sortvec *) v1;
- const struct sortvec *s2 = (const struct sortvec *) v2;
+ const struct sortvec *s1 = v1;
+ const struct sortvec *s2 = v2;
if (s1->priority != s2->priority)
return s1->priority < s2->priority ? -1 : 1;
if (s1->beg != s2->beg)
between "equal" overlays. The result can still change between
invocations of Emacs, but it won't change in the middle of
`find_field' (bug#6830). */
- if (XHASH (s1->overlay) != XHASH (s2->overlay))
- return XHASH (s1->overlay) < XHASH (s2->overlay) ? -1 : 1;
+ if (!EQ (s1->overlay, s2->overlay))
+ return XLI (s1->overlay) < XLI (s2->overlay) ? -1 : 1;
return 0;
}
sort_overlays (Lisp_Object *overlay_vec, ptrdiff_t noverlays, struct window *w)
{
ptrdiff_t i, j;
+ USE_SAFE_ALLOCA;
struct sortvec *sortvec;
- sortvec = (struct sortvec *) alloca (noverlays * sizeof (struct sortvec));
+
+ SAFE_NALLOCA (sortvec, 1, noverlays);
/* Put the valid and relevant overlays into sortvec. */
Lisp_Object overlay;
overlay = overlay_vec[i];
- if (OVERLAY_VALID (overlay)
+ if (OVERLAYP (overlay)
&& OVERLAY_POSITION (OVERLAY_START (overlay)) > 0
&& OVERLAY_POSITION (OVERLAY_END (overlay)) > 0)
{
for (i = 0; i < noverlays; i++)
overlay_vec[i] = sortvec[i].overlay;
+
+ SAFE_FREE ();
return (noverlays);
}
\f
static int
cmp_for_strings (const void *as1, const void *as2)
{
- struct sortstr *s1 = (struct sortstr *)as1;
- struct sortstr *s2 = (struct sortstr *)as2;
+ struct sortstr const *s1 = as1;
+ struct sortstr const *s2 = as2;
if (s1->size != s2->size)
return s2->size < s1->size ? -1 : 1;
if (s1->priority != s2->priority)
record_overlay_string (struct sortstrlist *ssl, Lisp_Object str,
Lisp_Object str2, Lisp_Object pri, ptrdiff_t size)
{
- EMACS_INT nbytes;
+ ptrdiff_t nbytes;
if (ssl->used == ssl->size)
ssl->buf = xpalloc (ssl->buf, &ssl->size, 5, -1, sizeof *ssl->buf);
PSTR, if that variable is non-null. The string may be overwritten by
subsequent calls. */
-EMACS_INT
-overlay_strings (EMACS_INT pos, struct window *w, unsigned char **pstr)
+ptrdiff_t
+overlay_strings (ptrdiff_t pos, struct window *w, unsigned char **pstr)
{
Lisp_Object overlay, window, str;
struct Lisp_Overlay *ov;
- EMACS_INT startpos, endpos;
- int multibyte = ! NILP (BVAR (current_buffer, enable_multibyte_characters));
+ ptrdiff_t startpos, endpos;
+ bool multibyte = ! NILP (BVAR (current_buffer, enable_multibyte_characters));
overlay_heads.used = overlay_heads.bytes = 0;
overlay_tails.used = overlay_tails.bytes = 0;
if (overlay_heads.bytes || overlay_tails.bytes)
{
Lisp_Object tem;
- EMACS_INT i;
+ ptrdiff_t i;
unsigned char *p;
ptrdiff_t total;
p = overlay_str_buf;
for (i = overlay_tails.used; --i >= 0;)
{
- EMACS_INT nbytes;
+ ptrdiff_t nbytes;
tem = overlay_tails.buf[i].string;
nbytes = copy_text (SDATA (tem), p,
SBYTES (tem),
}
for (i = 0; i < overlay_heads.used; ++i)
{
- EMACS_INT nbytes;
+ ptrdiff_t nbytes;
tem = overlay_heads.buf[i].string;
nbytes = copy_text (SDATA (tem), p,
SBYTES (tem),
}
}
if (p != overlay_str_buf + total)
- abort ();
+ emacs_abort ();
if (pstr)
*pstr = overlay_str_buf;
return total;
/* Shift overlays in BUF's overlay lists, to center the lists at POS. */
void
-recenter_overlay_lists (struct buffer *buf, EMACS_INT pos)
+recenter_overlay_lists (struct buffer *buf, ptrdiff_t pos)
{
Lisp_Object overlay, beg, end;
struct Lisp_Overlay *prev, *tail, *next;
{
next = tail->next;
XSETMISC (overlay, tail);
-
- /* If the overlay is not valid, get rid of it. */
- if (!OVERLAY_VALID (overlay))
-#if 1
- abort ();
-#else
- {
- /* Splice the cons cell TAIL out of overlays_before. */
- if (!NILP (prev))
- XCDR (prev) = next;
- else
- buf->overlays_before = next;
- tail = prev;
- continue;
- }
-#endif
+ eassert (OVERLAYP (overlay));
beg = OVERLAY_START (overlay);
end = OVERLAY_END (overlay);
if (OVERLAY_POSITION (end) > pos)
{
/* OVERLAY needs to be moved. */
- EMACS_INT where = OVERLAY_POSITION (beg);
+ ptrdiff_t where = OVERLAY_POSITION (beg);
struct Lisp_Overlay *other, *other_prev;
/* Splice the cons cell TAIL out of overlays_before. */
if (prev)
prev->next = next;
else
- buf->overlays_before = next;
+ set_buffer_overlays_before (buf, next);
/* Search thru overlays_after for where to put it. */
other_prev = NULL;
Lisp_Object otherbeg, otheroverlay;
XSETMISC (otheroverlay, other);
- eassert (OVERLAY_VALID (otheroverlay));
+ eassert (OVERLAYP (otheroverlay));
otherbeg = OVERLAY_START (otheroverlay);
if (OVERLAY_POSITION (otherbeg) >= where)
if (other_prev)
other_prev->next = tail;
else
- buf->overlays_after = tail;
+ set_buffer_overlays_after (buf, tail);
tail = prev;
}
else
{
next = tail->next;
XSETMISC (overlay, tail);
-
- /* If the overlay is not valid, get rid of it. */
- if (!OVERLAY_VALID (overlay))
-#if 1
- abort ();
-#else
- {
- /* Splice the cons cell TAIL out of overlays_after. */
- if (!NILP (prev))
- XCDR (prev) = next;
- else
- buf->overlays_after = next;
- tail = prev;
- continue;
- }
-#endif
+ eassert (OVERLAYP (overlay));
beg = OVERLAY_START (overlay);
end = OVERLAY_END (overlay);
if (OVERLAY_POSITION (end) <= pos)
{
/* OVERLAY needs to be moved. */
- EMACS_INT where = OVERLAY_POSITION (end);
+ ptrdiff_t where = OVERLAY_POSITION (end);
struct Lisp_Overlay *other, *other_prev;
/* Splice the cons cell TAIL out of overlays_after. */
if (prev)
prev->next = next;
else
- buf->overlays_after = next;
+ set_buffer_overlays_after (buf, next);
/* Search thru overlays_before for where to put it. */
other_prev = NULL;
Lisp_Object otherend, otheroverlay;
XSETMISC (otheroverlay, other);
- eassert (OVERLAY_VALID (otheroverlay));
+ eassert (OVERLAYP (otheroverlay));
otherend = OVERLAY_END (otheroverlay);
if (OVERLAY_POSITION (otherend) <= where)
if (other_prev)
other_prev->next = tail;
else
- buf->overlays_before = tail;
+ set_buffer_overlays_before (buf, tail);
tail = prev;
}
}
}
void
-adjust_overlays_for_insert (EMACS_INT pos, EMACS_INT length)
+adjust_overlays_for_insert (ptrdiff_t pos, ptrdiff_t length)
{
/* After an insertion, the lists are still sorted properly,
but we may need to update the value of the overlay center. */
}
void
-adjust_overlays_for_delete (EMACS_INT pos, EMACS_INT length)
+adjust_overlays_for_delete (ptrdiff_t pos, ptrdiff_t length)
{
if (current_buffer->overlay_center < pos)
/* The deletion was to our right. No change needed; the before- and
after-lists are still consistent. */
;
- else if (current_buffer->overlay_center > pos + length)
+ else if (current_buffer->overlay_center - pos > length)
/* The deletion was to our left. We need to adjust the center value
to account for the change in position, but the lists are consistent
given the new value. */
Such an overlay might even have negative size at this point.
If so, we'll make the overlay empty. */
void
-fix_start_end_in_overlays (register EMACS_INT start, register EMACS_INT end)
+fix_start_end_in_overlays (register ptrdiff_t start, register ptrdiff_t end)
{
Lisp_Object overlay;
struct Lisp_Overlay *before_list IF_LINT (= NULL);
current_buffer->overlays_before or overlays_after, depending
which loop we're in. */
struct Lisp_Overlay *tail, *parent;
- EMACS_INT startpos, endpos;
+ ptrdiff_t startpos, endpos;
/* This algorithm shifts links around instead of consing and GCing.
The loop invariant is that before_list (resp. after_list) is a
beforep = tail;
}
if (!parent)
- current_buffer->overlays_before = tail->next;
+ set_buffer_overlays_before (current_buffer, tail->next);
else
parent->next = tail->next;
tail = tail->next;
beforep = tail;
}
if (!parent)
- current_buffer->overlays_after = tail->next;
+ set_buffer_overlays_after (current_buffer, tail->next);
else
parent->next = tail->next;
tail = tail->next;
if (beforep)
{
beforep->next = current_buffer->overlays_before;
- current_buffer->overlays_before = before_list;
+ set_buffer_overlays_before (current_buffer, before_list);
}
- recenter_overlay_lists (current_buffer, current_buffer->overlay_center);
if (afterp)
{
afterp->next = current_buffer->overlays_after;
- current_buffer->overlays_after = after_list;
+ set_buffer_overlays_after (current_buffer, after_list);
}
recenter_overlay_lists (current_buffer, current_buffer->overlay_center);
}
was at PREV, and now is at POS. */
void
-fix_overlays_before (struct buffer *bp, EMACS_INT prev, EMACS_INT pos)
+fix_overlays_before (struct buffer *bp, ptrdiff_t prev, ptrdiff_t pos)
{
/* If parent is nil, replace overlays_before; otherwise, parent->next. */
struct Lisp_Overlay *tail = bp->overlays_before, *parent = NULL, *right_pair;
Lisp_Object tem;
- EMACS_INT end IF_LINT (= 0);
+ ptrdiff_t end IF_LINT (= 0);
/* After the insertion, the several overlays may be in incorrect
order. The possibility is that, in the list `overlays_before',
if (!right_pair)
{
found->next = bp->overlays_before;
- bp->overlays_before = found;
+ set_buffer_overlays_before (bp, found);
}
else
{
if (!NILP (rear_advance))
XMARKER (end)->insertion_type = 1;
- overlay = allocate_misc ();
- XMISCTYPE (overlay) = Lisp_Misc_Overlay;
- XOVERLAY (overlay)->start = beg;
- XOVERLAY (overlay)->end = end;
- XOVERLAY (overlay)->plist = Qnil;
- XOVERLAY (overlay)->next = NULL;
+ overlay = build_overlay (beg, end, Qnil);
/* Put the new overlay on the wrong list. */
end = OVERLAY_END (overlay);
if (OVERLAY_POSITION (end) < b->overlay_center)
{
- if (b->overlays_after)
- XOVERLAY (overlay)->next = b->overlays_after;
- b->overlays_after = XOVERLAY (overlay);
+ eassert (b->overlays_after || (XOVERLAY (overlay)->next == NULL));
+ XOVERLAY (overlay)->next = b->overlays_after;
+ set_buffer_overlays_after (b, XOVERLAY (overlay));
}
else
{
- if (b->overlays_before)
- XOVERLAY (overlay)->next = b->overlays_before;
- b->overlays_before = XOVERLAY (overlay);
+ eassert (b->overlays_before || (XOVERLAY (overlay)->next == NULL));
+ XOVERLAY (overlay)->next = b->overlays_before;
+ set_buffer_overlays_before (b, XOVERLAY (overlay));
}
-
/* This puts it in the right list, and in the right order. */
recenter_overlay_lists (b, b->overlay_center);
/* Mark a section of BUF as needing redisplay because of overlays changes. */
static void
-modify_overlay (struct buffer *buf, EMACS_INT start, EMACS_INT end)
+modify_overlay (struct buffer *buf, ptrdiff_t start, ptrdiff_t end)
{
if (start > end)
{
- EMACS_INT temp = start;
+ ptrdiff_t temp = start;
start = end;
end = temp;
}
BUF_COMPUTE_UNCHANGED (buf, start, end);
- /* If this is a buffer not in the selected window,
- we must do other windows. */
- if (buf != XBUFFER (XWINDOW (selected_window)->buffer))
- windows_or_buffers_changed = 1;
- /* If multiple windows show this buffer, we must do other windows. */
- else if (buffer_shared > 1)
- windows_or_buffers_changed = 1;
- /* If we modify an overlay at the end of the buffer, we cannot
- be sure that window end is still valid. */
- else if (end >= ZV && start <= ZV)
- windows_or_buffers_changed = 1;
+ /* If BUF is visible, consider updating the display if ... */
+ if (buffer_window_count (buf) > 0)
+ {
+ /* ... it's visible in other window than selected, */
+ if (buf != XBUFFER (XWINDOW (selected_window)->contents))
+ windows_or_buffers_changed = 1;
+ /* ... or if we modify an overlay at the end of the buffer
+ and so we cannot be sure that window end is still valid. */
+ else if (end >= ZV && start <= ZV)
+ windows_or_buffers_changed = 1;
+ }
++BUF_OVERLAY_MODIFF (buf);
}
-\f
+/* Remove OVERLAY from LIST. */
+
static struct Lisp_Overlay *
unchain_overlay (struct Lisp_Overlay *list, struct Lisp_Overlay *overlay)
{
- struct Lisp_Overlay *tmp, *prev;
- for (tmp = list, prev = NULL; tmp; prev = tmp, tmp = tmp->next)
- if (tmp == overlay)
+ register struct Lisp_Overlay *tail, **prev = &list;
+
+ for (tail = list; tail; prev = &tail->next, tail = *prev)
+ if (tail == overlay)
{
- if (prev)
- prev->next = tmp->next;
- else
- list = tmp->next;
+ *prev = overlay->next;
overlay->next = NULL;
break;
}
return list;
}
+/* Remove OVERLAY from both overlay lists of B. */
+
+static void
+unchain_both (struct buffer *b, Lisp_Object overlay)
+{
+ struct Lisp_Overlay *ov = XOVERLAY (overlay);
+
+ set_buffer_overlays_before (b, unchain_overlay (b->overlays_before, ov));
+ set_buffer_overlays_after (b, unchain_overlay (b->overlays_after, ov));
+ eassert (XOVERLAY (overlay)->next == NULL);
+}
+
DEFUN ("move-overlay", Fmove_overlay, Smove_overlay, 3, 4, 0,
doc: /* Set the endpoints of OVERLAY to BEG and END in BUFFER.
If BUFFER is omitted, leave OVERLAY in the same buffer it inhabits now.
buffer. */)
(Lisp_Object overlay, Lisp_Object beg, Lisp_Object end, Lisp_Object buffer)
{
- struct buffer *b, *ob;
+ struct buffer *b, *ob = 0;
Lisp_Object obuffer;
- int count = SPECPDL_INDEX ();
+ ptrdiff_t count = SPECPDL_INDEX ();
+ ptrdiff_t n_beg, n_end, o_beg IF_LINT (= 0), o_end IF_LINT (= 0);
CHECK_OVERLAY (overlay);
if (NILP (buffer))
XSETBUFFER (buffer, current_buffer);
CHECK_BUFFER (buffer);
+ if (NILP (Fbuffer_live_p (buffer)))
+ error ("Attempt to move overlay to a dead buffer");
+
if (MARKERP (beg)
&& ! EQ (Fmarker_buffer (beg), buffer))
error ("Marker points into wrong buffer");
CHECK_NUMBER_COERCE_MARKER (beg);
CHECK_NUMBER_COERCE_MARKER (end);
- if (XINT (beg) == XINT (end) && ! NILP (Foverlay_get (overlay, Qevaporate)))
- return Fdelete_overlay (overlay);
-
if (XINT (beg) > XINT (end))
{
Lisp_Object temp;
obuffer = Fmarker_buffer (OVERLAY_START (overlay));
b = XBUFFER (buffer);
- ob = BUFFERP (obuffer) ? XBUFFER (obuffer) : (struct buffer *) 0;
+
+ if (!NILP (obuffer))
+ {
+ ob = XBUFFER (obuffer);
+
+ o_beg = OVERLAY_POSITION (OVERLAY_START (overlay));
+ o_end = OVERLAY_POSITION (OVERLAY_END (overlay));
+
+ unchain_both (ob, overlay);
+ }
+
+ /* Set the overlay boundaries, which may clip them. */
+ Fset_marker (OVERLAY_START (overlay), beg, buffer);
+ Fset_marker (OVERLAY_END (overlay), end, buffer);
+
+ n_beg = marker_position (OVERLAY_START (overlay));
+ n_end = marker_position (OVERLAY_END (overlay));
/* If the overlay has changed buffers, do a thorough redisplay. */
if (!EQ (buffer, obuffer))
{
/* Redisplay where the overlay was. */
- if (!NILP (obuffer))
- {
- EMACS_INT o_beg;
- EMACS_INT o_end;
-
- o_beg = OVERLAY_POSITION (OVERLAY_START (overlay));
- o_end = OVERLAY_POSITION (OVERLAY_END (overlay));
-
- modify_overlay (ob, o_beg, o_end);
- }
+ if (ob)
+ modify_overlay (ob, o_beg, o_end);
/* Redisplay where the overlay is going to be. */
- modify_overlay (b, XINT (beg), XINT (end));
+ modify_overlay (b, n_beg, n_end);
}
else
/* Redisplay the area the overlay has just left, or just enclosed. */
{
- EMACS_INT o_beg, o_end;
-
- o_beg = OVERLAY_POSITION (OVERLAY_START (overlay));
- o_end = OVERLAY_POSITION (OVERLAY_END (overlay));
-
- if (o_beg == XINT (beg))
- modify_overlay (b, o_end, XINT (end));
- else if (o_end == XINT (end))
- modify_overlay (b, o_beg, XINT (beg));
+ if (o_beg == n_beg)
+ modify_overlay (b, o_end, n_end);
+ else if (o_end == n_end)
+ modify_overlay (b, o_beg, n_beg);
else
- {
- if (XINT (beg) < o_beg) o_beg = XINT (beg);
- if (XINT (end) > o_end) o_end = XINT (end);
- modify_overlay (b, o_beg, o_end);
- }
+ modify_overlay (b, min (o_beg, n_beg), max (o_end, n_end));
}
- if (!NILP (obuffer))
- {
- ob->overlays_before
- = unchain_overlay (ob->overlays_before, XOVERLAY (overlay));
- ob->overlays_after
- = unchain_overlay (ob->overlays_after, XOVERLAY (overlay));
- eassert (XOVERLAY (overlay)->next == NULL);
- }
+ /* Delete the overlay if it is empty after clipping and has the
+ evaporate property. */
+ if (n_beg == n_end && !NILP (Foverlay_get (overlay, Qevaporate)))
+ return unbind_to (count, Fdelete_overlay (overlay));
- Fset_marker (OVERLAY_START (overlay), beg, buffer);
- Fset_marker (OVERLAY_END (overlay), end, buffer);
-
- /* Put the overlay on the wrong list. */
- end = OVERLAY_END (overlay);
- if (OVERLAY_POSITION (end) < b->overlay_center)
+ /* Put the overlay into the new buffer's overlay lists, first on the
+ wrong list. */
+ if (n_end < b->overlay_center)
{
XOVERLAY (overlay)->next = b->overlays_after;
- b->overlays_after = XOVERLAY (overlay);
+ set_buffer_overlays_after (b, XOVERLAY (overlay));
}
else
{
XOVERLAY (overlay)->next = b->overlays_before;
- b->overlays_before = XOVERLAY (overlay);
+ set_buffer_overlays_before (b, XOVERLAY (overlay));
}
/* This puts it in the right list, and in the right order. */
{
Lisp_Object buffer;
struct buffer *b;
- int count = SPECPDL_INDEX ();
+ ptrdiff_t count = SPECPDL_INDEX ();
CHECK_OVERLAY (overlay);
b = XBUFFER (buffer);
specbind (Qinhibit_quit, Qt);
- b->overlays_before = unchain_overlay (b->overlays_before,XOVERLAY (overlay));
- b->overlays_after = unchain_overlay (b->overlays_after, XOVERLAY (overlay));
- eassert (XOVERLAY (overlay)->next == NULL);
- modify_overlay (b,
- marker_position (OVERLAY_START (overlay)),
- marker_position (OVERLAY_END (overlay)));
- Fset_marker (OVERLAY_START (overlay), Qnil, Qnil);
- Fset_marker (OVERLAY_END (overlay), Qnil, Qnil);
+ unchain_both (b, overlay);
+ drop_overlay (b, XOVERLAY (overlay));
/* When deleting an overlay with before or after strings, turn off
display optimizations for the affected buffer, on the basis that
return unbind_to (count, Qnil);
}
+
+DEFUN ("delete-all-overlays", Fdelete_all_overlays, Sdelete_all_overlays, 0, 1, 0,
+ doc: /* Delete all overlays of BUFFER.
+BUFFER omitted or nil means delete all overlays of the current
+buffer. */)
+ (Lisp_Object buffer)
+{
+ register struct buffer *buf;
+
+ if (NILP (buffer))
+ buf = current_buffer;
+ else
+ {
+ CHECK_BUFFER (buffer);
+ buf = XBUFFER (buffer);
+ }
+
+ delete_all_overlays (buf);
+ return Qnil;
+}
\f
/* Overlay dissection functions. */
len = 10;
/* We can't use alloca here because overlays_at can call xrealloc. */
- overlay_vec = (Lisp_Object *) xmalloc (len * sizeof (Lisp_Object));
+ overlay_vec = xmalloc (len * sizeof *overlay_vec);
/* Put all the overlays we want in a vector in overlay_vec.
Store the length in len. */
noverlays = overlays_at (XINT (pos), 1, &overlay_vec, &len,
- (EMACS_INT *) 0, (EMACS_INT *) 0, 0);
+ NULL, NULL, 0);
/* Make a list of them all. */
result = Flist (noverlays, overlay_vec);
CHECK_NUMBER_COERCE_MARKER (end);
len = 10;
- overlay_vec = (Lisp_Object *) xmalloc (len * sizeof (Lisp_Object));
+ overlay_vec = xmalloc (len * sizeof *overlay_vec);
/* Put all the overlays we want in a vector in overlay_vec.
Store the length in len. */
(Lisp_Object pos)
{
ptrdiff_t i, len, noverlays;
- EMACS_INT endpos;
+ ptrdiff_t endpos;
Lisp_Object *overlay_vec;
CHECK_NUMBER_COERCE_MARKER (pos);
len = 10;
- overlay_vec = (Lisp_Object *) xmalloc (len * sizeof (Lisp_Object));
+ overlay_vec = xmalloc (len * sizeof *overlay_vec);
/* Put all the overlays we want in a vector in overlay_vec.
Store the length in len.
endpos gets the position where the next overlay starts. */
noverlays = overlays_at (XINT (pos), 1, &overlay_vec, &len,
- &endpos, (EMACS_INT *) 0, 1);
+ &endpos, 0, 1);
/* If any of these overlays ends before endpos,
use its ending point instead. */
for (i = 0; i < noverlays; i++)
{
Lisp_Object oend;
- EMACS_INT oendpos;
+ ptrdiff_t oendpos;
oend = OVERLAY_END (overlay_vec[i]);
oendpos = OVERLAY_POSITION (oend);
the value is (point-min). */)
(Lisp_Object pos)
{
- EMACS_INT prevpos;
+ ptrdiff_t prevpos;
Lisp_Object *overlay_vec;
ptrdiff_t len;
return pos;
len = 10;
- overlay_vec = (Lisp_Object *) xmalloc (len * sizeof (Lisp_Object));
+ overlay_vec = xmalloc (len * sizeof *overlay_vec);
/* Put all the overlays we want in a vector in overlay_vec.
Store the length in len.
prevpos gets the position of the previous change. */
overlays_at (XINT (pos), 1, &overlay_vec, &len,
- (EMACS_INT *) 0, &prevpos, 1);
+ 0, &prevpos, 1);
xfree (overlay_vec);
return make_number (prevpos);
{
struct Lisp_Overlay *ol;
Lisp_Object before = Qnil, after = Qnil, tmp;
+
for (ol = current_buffer->overlays_before; ol; ol = ol->next)
{
XSETMISC (tmp, ol);
XSETMISC (tmp, ol);
after = Fcons (tmp, after);
}
+
return Fcons (Fnreverse (before), Fnreverse (after));
}
for positions far away from POS). */)
(Lisp_Object pos)
{
+ ptrdiff_t p;
CHECK_NUMBER_COERCE_MARKER (pos);
- recenter_overlay_lists (current_buffer, XINT (pos));
+ p = clip_to_bounds (PTRDIFF_MIN, XINT (pos), PTRDIFF_MAX);
+ recenter_overlay_lists (current_buffer, p);
return Qnil;
}
\f
(Lisp_Object overlay, Lisp_Object prop, Lisp_Object value)
{
Lisp_Object tail, buffer;
- int changed;
+ bool changed;
CHECK_OVERLAY (overlay);
}
/* It wasn't in the list, so add it to the front. */
changed = !NILP (value);
- XOVERLAY (overlay)->plist
- = Fcons (prop, Fcons (value, XOVERLAY (overlay)->plist));
+ set_overlay_plist
+ (overlay, Fcons (prop, Fcons (value, XOVERLAY (overlay)->plist)));
found:
if (! NILP (buffer))
{
static Lisp_Object last_overlay_modification_hooks;
/* Number of elements actually used in last_overlay_modification_hooks. */
-static int last_overlay_modification_hooks_used;
+static ptrdiff_t last_overlay_modification_hooks_used;
/* Add one functionlist/overlay pair
to the end of last_overlay_modification_hooks. */
static void
add_overlay_mod_hooklist (Lisp_Object functionlist, Lisp_Object overlay)
{
- int oldsize = ASIZE (last_overlay_modification_hooks);
+ ptrdiff_t oldsize = ASIZE (last_overlay_modification_hooks);
- if (last_overlay_modification_hooks_used == oldsize)
- last_overlay_modification_hooks = larger_vector
- (last_overlay_modification_hooks, oldsize * 2, Qnil);
+ if (oldsize - 1 <= last_overlay_modification_hooks_used)
+ last_overlay_modification_hooks =
+ larger_vector (last_overlay_modification_hooks, 2, -1);
ASET (last_overlay_modification_hooks, last_overlay_modification_hooks_used,
functionlist); last_overlay_modification_hooks_used++;
ASET (last_overlay_modification_hooks, last_overlay_modification_hooks_used,
and the insert-after-hooks of overlay ending at START.
This is called both before and after the modification.
- AFTER is nonzero when we call after the modification.
+ AFTER is true when we call after the modification.
ARG1, ARG2, ARG3 are arguments to pass to the hook functions.
When AFTER is nonzero, they are the start position,
and the length of deleted or replaced old text. */
void
-report_overlay_modification (Lisp_Object start, Lisp_Object end, int after,
+report_overlay_modification (Lisp_Object start, Lisp_Object end, bool after,
Lisp_Object arg1, Lisp_Object arg2, Lisp_Object arg3)
{
Lisp_Object prop, overlay;
struct Lisp_Overlay *tail;
- /* 1 if this change is an insertion. */
- int insertion = (after ? XFASTINT (arg3) == 0 : EQ (start, end));
+ /* True if this change is an insertion. */
+ bool insertion = (after ? XFASTINT (arg3) == 0 : EQ (start, end));
struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
overlay = Qnil;
last_overlay_modification_hooks_used = 0;
for (tail = current_buffer->overlays_before; tail; tail = tail->next)
{
- EMACS_INT startpos, endpos;
+ ptrdiff_t startpos, endpos;
Lisp_Object ostart, oend;
XSETMISC (overlay, tail);
for (tail = current_buffer->overlays_after; tail; tail = tail->next)
{
- EMACS_INT startpos, endpos;
+ ptrdiff_t startpos, endpos;
Lisp_Object ostart, oend;
XSETMISC (overlay, tail);
/* Call the functions recorded in last_overlay_modification_hooks.
First copy the vector contents, in case some of these hooks
do subsequent modification of the buffer. */
- int size = last_overlay_modification_hooks_used;
- Lisp_Object *copy = (Lisp_Object *) alloca (size * sizeof (Lisp_Object));
- int i;
+ ptrdiff_t size = last_overlay_modification_hooks_used;
+ Lisp_Object *copy = alloca (size * sizeof *copy);
+ ptrdiff_t i;
memcpy (copy, XVECTOR (last_overlay_modification_hooks)->contents,
- size * sizeof (Lisp_Object));
+ size * word_size);
gcpro1.var = copy;
gcpro1.nvars = size;
}
static void
-call_overlay_mod_hooks (Lisp_Object list, Lisp_Object overlay, int after,
+call_overlay_mod_hooks (Lisp_Object list, Lisp_Object overlay, bool after,
Lisp_Object arg1, Lisp_Object arg2, Lisp_Object arg3)
{
struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
/* Delete any zero-sized overlays at position POS, if the `evaporate'
property is set. */
void
-evaporate_overlays (EMACS_INT pos)
+evaporate_overlays (ptrdiff_t pos)
{
Lisp_Object overlay, hit_list;
struct Lisp_Overlay *tail;
if (pos <= current_buffer->overlay_center)
for (tail = current_buffer->overlays_before; tail; tail = tail->next)
{
- EMACS_INT endpos;
+ ptrdiff_t endpos;
XSETMISC (overlay, tail);
endpos = OVERLAY_POSITION (OVERLAY_END (overlay));
if (endpos < pos)
else
for (tail = current_buffer->overlays_after; tail; tail = tail->next)
{
- EMACS_INT startpos;
+ ptrdiff_t startpos;
XSETMISC (overlay, tail);
startpos = OVERLAY_POSITION (OVERLAY_START (overlay));
if (startpos > pos)
for (; CONSP (hit_list); hit_list = XCDR (hit_list))
Fdelete_overlay (XCAR (hit_list));
}
-\f
-/* Somebody has tried to store a value with an unacceptable type
- in the slot with offset OFFSET. */
-
-void
-buffer_slot_type_mismatch (Lisp_Object newval, int type)
-{
- Lisp_Object predicate;
-
- switch (type)
- {
- case_Lisp_Int: predicate = Qintegerp; break;
- case Lisp_String: predicate = Qstringp; break;
- case Lisp_Symbol: predicate = Qsymbolp; break;
- default: abort ();
- }
- wrong_type_argument (predicate, newval);
-}
-
-\f
/***********************************************************************
Allocation with mmap
***********************************************************************/
#ifdef USE_MMAP_FOR_BUFFERS
-#include <sys/types.h>
#include <sys/mman.h>
#ifndef MAP_ANON
#define MAP_FAILED ((void *) -1)
#endif
-#include <stdio.h>
-
#if MAP_ANON == 0
#include <fcntl.h>
#endif
/* Pointer to the location holding the address of the memory
allocated with the mmap'd block. The variable actually points
after this structure. */
- POINTER_TYPE **var;
+ void **var;
/* Next and previous in list of all mmap'd regions. */
struct mmap_region *next, *prev;
/* 1 means mmap has been initialized. */
-static int mmap_initialized_p;
+static bool mmap_initialized_p;
/* Value is X rounded up to the next multiple of N. */
to the start of the user-visible part of the region. */
#define MMAP_USER_AREA(P) \
- ((POINTER_TYPE *) ((char *) (P) + MMAP_REGION_STRUCT_SIZE))
+ ((void *) ((char *) (P) + MMAP_REGION_STRUCT_SIZE))
#define MEM_ALIGN sizeof (double)
if (mmap_fd <= 0)
{
/* No anonymous mmap -- we need the file descriptor. */
- mmap_fd = open ("/dev/zero", O_RDONLY);
+ mmap_fd = emacs_open ("/dev/zero", O_RDONLY, 0);
if (mmap_fd == -1)
fatal ("Cannot open /dev/zero: %s", emacs_strerror (errno));
}
is at END - 1. */
static struct mmap_region *
-mmap_find (POINTER_TYPE *start, POINTER_TYPE *end)
+mmap_find (void *start, void *end)
{
struct mmap_region *r;
- char *s = (char *) start, *e = (char *) end;
+ char *s = start, *e = end;
for (r = mmap_regions; r; r = r->next)
{
/* Unmap a region. P is a pointer to the start of the user-araa of
- the region. Value is non-zero if successful. */
+ the region. */
-static int
+static void
mmap_free_1 (struct mmap_region *r)
{
if (r->next)
else
mmap_regions = r->next;
- if (munmap ((POINTER_TYPE *) r, r->nbytes_mapped) == -1)
- {
- fprintf (stderr, "munmap: %s\n", emacs_strerror (errno));
- return 0;
- }
-
- return 1;
+ if (munmap (r, r->nbytes_mapped) == -1)
+ fprintf (stderr, "munmap: %s\n", emacs_strerror (errno));
}
/* Enlarge region R by NPAGES pages. NPAGES < 0 means shrink R.
- Value is non-zero if successful. */
+ Value is true if successful. */
-static int
+static bool
mmap_enlarge (struct mmap_region *r, int npages)
{
char *region_end = (char *) r + r->nbytes_mapped;
size_t nbytes;
- int success = 0;
+ bool success = 0;
if (npages < 0)
{
I'm not sure this is worth doing, let's see. */
if (!MMAP_ALLOCATED_P (region_end, region_end + nbytes))
{
- POINTER_TYPE *p;
+ void *p;
p = mmap (region_end, nbytes, PROT_READ | PROT_WRITE,
MAP_ANON | MAP_PRIVATE | MAP_FIXED, mmap_fd, 0);
if (p == MAP_FAILED)
; /* fprintf (stderr, "mmap: %s\n", emacs_strerror (errno)); */
- else if (p != (POINTER_TYPE *) region_end)
+ else if (p != region_end)
{
/* Kernels are free to choose a different address. In
that case, unmap what we've mapped above; we have
}
-/* Set or reset variables holding references to mapped regions. If
- RESTORE_P is zero, set all variables to null. If RESTORE_P is
- non-zero, set all variables to the start of the user-areas
- of mapped regions.
+/* Set or reset variables holding references to mapped regions.
+ If not RESTORE_P, set all variables to null. If RESTORE_P, set all
+ variables to the start of the user-areas of mapped regions.
This function is called from Fdump_emacs to ensure that the dumped
Emacs doesn't contain references to memory that won't be mapped
when Emacs starts. */
void
-mmap_set_vars (int restore_p)
+mmap_set_vars (bool restore_p)
{
struct mmap_region *r;
If we can't allocate the necessary memory, set *VAR to null, and
return null. */
-static POINTER_TYPE *
-mmap_alloc (POINTER_TYPE **var, size_t nbytes)
+static void *
+mmap_alloc (void **var, size_t nbytes)
{
void *p;
size_t map;
}
else
{
- struct mmap_region *r = (struct mmap_region *) p;
+ struct mmap_region *r = p;
r->nbytes_specified = nbytes;
r->nbytes_mapped = map;
PTR. Store 0 in *PTR to show there's no block allocated. */
static void
-mmap_free (POINTER_TYPE **var)
+mmap_free (void **var)
{
mmap_init ();
and return this value. If more memory cannot be allocated, then
leave *VAR unchanged, and return null. */
-static POINTER_TYPE *
-mmap_realloc (POINTER_TYPE **var, size_t nbytes)
+static void *
+mmap_realloc (void **var, size_t nbytes)
{
- POINTER_TYPE *result;
+ void *result;
mmap_init ();
if (room < nbytes)
{
/* Must enlarge. */
- POINTER_TYPE *old_ptr = *var;
+ void *old_ptr = *var;
/* Try to map additional pages at the end of the region.
If that fails, allocate a new region, copy data
static void
alloc_buffer_text (struct buffer *b, ptrdiff_t nbytes)
{
- POINTER_TYPE *p;
+ void *p;
- BLOCK_INPUT;
+ block_input ();
#if defined USE_MMAP_FOR_BUFFERS
- p = mmap_alloc ((POINTER_TYPE **) &b->text->beg, nbytes);
+ p = mmap_alloc ((void **) &b->text->beg, nbytes);
#elif defined REL_ALLOC
- p = r_alloc ((POINTER_TYPE **) &b->text->beg, nbytes);
+ p = r_alloc ((void **) &b->text->beg, nbytes);
#else
p = xmalloc (nbytes);
#endif
if (p == NULL)
{
- UNBLOCK_INPUT;
+ unblock_input ();
memory_full (nbytes);
}
- b->text->beg = (unsigned char *) p;
- UNBLOCK_INPUT;
+ b->text->beg = p;
+ unblock_input ();
}
/* Enlarge buffer B's text buffer by DELTA bytes. DELTA < 0 means
shrink it. */
void
-enlarge_buffer_text (struct buffer *b, EMACS_INT delta)
+enlarge_buffer_text (struct buffer *b, ptrdiff_t delta)
{
- POINTER_TYPE *p;
+ void *p;
ptrdiff_t nbytes = (BUF_Z_BYTE (b) - BUF_BEG_BYTE (b) + BUF_GAP_SIZE (b) + 1
+ delta);
- BLOCK_INPUT;
+ block_input ();
#if defined USE_MMAP_FOR_BUFFERS
- p = mmap_realloc ((POINTER_TYPE **) &b->text->beg, nbytes);
+ p = mmap_realloc ((void **) &b->text->beg, nbytes);
#elif defined REL_ALLOC
- p = r_re_alloc ((POINTER_TYPE **) &b->text->beg, nbytes);
+ p = r_re_alloc ((void **) &b->text->beg, nbytes);
#else
p = xrealloc (b->text->beg, nbytes);
#endif
if (p == NULL)
{
- UNBLOCK_INPUT;
+ unblock_input ();
memory_full (nbytes);
}
- BUF_BEG_ADDR (b) = (unsigned char *) p;
- UNBLOCK_INPUT;
+ BUF_BEG_ADDR (b) = p;
+ unblock_input ();
}
static void
free_buffer_text (struct buffer *b)
{
- BLOCK_INPUT;
+ block_input ();
#if defined USE_MMAP_FOR_BUFFERS
- mmap_free ((POINTER_TYPE **) &b->text->beg);
+ mmap_free ((void **) &b->text->beg);
#elif defined REL_ALLOC
- r_alloc_free ((POINTER_TYPE **) &b->text->beg);
+ r_alloc_free ((void **) &b->text->beg);
#else
xfree (b->text->beg);
#endif
BUF_BEG_ADDR (b) = NULL;
- UNBLOCK_INPUT;
+ unblock_input ();
}
/* Prevent GC from getting confused. */
buffer_defaults.text = &buffer_defaults.own_text;
buffer_local_symbols.text = &buffer_local_symbols.own_text;
- BUF_INTERVALS (&buffer_defaults) = 0;
- BUF_INTERVALS (&buffer_local_symbols) = 0;
- XSETPVECTYPESIZE (&buffer_defaults, PVEC_BUFFER, 0);
- XSETBUFFER (Vbuffer_defaults, &buffer_defaults);
- XSETPVECTYPESIZE (&buffer_local_symbols, PVEC_BUFFER, 0);
- XSETBUFFER (Vbuffer_local_symbols, &buffer_local_symbols);
+ /* No one will share the text with these buffers, but let's play it safe. */
+ buffer_defaults.indirections = 0;
+ buffer_local_symbols.indirections = 0;
+ /* Likewise no one will display them. */
+ buffer_defaults.window_count = 0;
+ buffer_local_symbols.window_count = 0;
+ set_buffer_intervals (&buffer_defaults, NULL);
+ set_buffer_intervals (&buffer_local_symbols, NULL);
+ /* This is not strictly necessary, but let's make them initialized. */
+ bset_name (&buffer_defaults, build_pure_c_string (" *buffer-defaults*"));
+ bset_name (&buffer_local_symbols, build_pure_c_string (" *buffer-local-symbols*"));
+ BUFFER_PVEC_INIT (&buffer_defaults);
+ BUFFER_PVEC_INIT (&buffer_local_symbols);
/* Set up the default values of various buffer slots. */
/* Must do these before making the first buffer! */
/* real setup is done in bindings.el */
- BVAR (&buffer_defaults, mode_line_format) = make_pure_c_string ("%-");
- BVAR (&buffer_defaults, header_line_format) = Qnil;
- BVAR (&buffer_defaults, abbrev_mode) = Qnil;
- BVAR (&buffer_defaults, overwrite_mode) = Qnil;
- BVAR (&buffer_defaults, case_fold_search) = Qt;
- BVAR (&buffer_defaults, auto_fill_function) = Qnil;
- BVAR (&buffer_defaults, selective_display) = Qnil;
-#ifndef old
- BVAR (&buffer_defaults, selective_display_ellipses) = Qt;
-#endif
- BVAR (&buffer_defaults, abbrev_table) = Qnil;
- BVAR (&buffer_defaults, display_table) = Qnil;
- BVAR (&buffer_defaults, undo_list) = Qnil;
- BVAR (&buffer_defaults, mark_active) = Qnil;
- BVAR (&buffer_defaults, file_format) = Qnil;
- BVAR (&buffer_defaults, auto_save_file_format) = Qt;
- buffer_defaults.overlays_before = NULL;
- buffer_defaults.overlays_after = NULL;
+ bset_mode_line_format (&buffer_defaults, build_pure_c_string ("%-"));
+ bset_header_line_format (&buffer_defaults, Qnil);
+ bset_abbrev_mode (&buffer_defaults, Qnil);
+ bset_overwrite_mode (&buffer_defaults, Qnil);
+ bset_case_fold_search (&buffer_defaults, Qt);
+ bset_auto_fill_function (&buffer_defaults, Qnil);
+ bset_selective_display (&buffer_defaults, Qnil);
+ bset_selective_display_ellipses (&buffer_defaults, Qt);
+ bset_abbrev_table (&buffer_defaults, Qnil);
+ bset_display_table (&buffer_defaults, Qnil);
+ bset_undo_list (&buffer_defaults, Qnil);
+ bset_mark_active (&buffer_defaults, Qnil);
+ bset_file_format (&buffer_defaults, Qnil);
+ bset_auto_save_file_format (&buffer_defaults, Qt);
+ set_buffer_overlays_before (&buffer_defaults, NULL);
+ set_buffer_overlays_after (&buffer_defaults, NULL);
buffer_defaults.overlay_center = BEG;
XSETFASTINT (BVAR (&buffer_defaults, tab_width), 8);
- BVAR (&buffer_defaults, truncate_lines) = Qnil;
- BVAR (&buffer_defaults, word_wrap) = Qnil;
- BVAR (&buffer_defaults, ctl_arrow) = Qt;
- BVAR (&buffer_defaults, bidi_display_reordering) = Qt;
- BVAR (&buffer_defaults, bidi_paragraph_direction) = Qnil;
- BVAR (&buffer_defaults, cursor_type) = Qt;
- BVAR (&buffer_defaults, extra_line_spacing) = Qnil;
- BVAR (&buffer_defaults, cursor_in_non_selected_windows) = Qt;
-
- BVAR (&buffer_defaults, enable_multibyte_characters) = Qt;
- BVAR (&buffer_defaults, buffer_file_coding_system) = Qnil;
+ bset_truncate_lines (&buffer_defaults, Qnil);
+ bset_word_wrap (&buffer_defaults, Qnil);
+ bset_ctl_arrow (&buffer_defaults, Qt);
+ bset_bidi_display_reordering (&buffer_defaults, Qt);
+ bset_bidi_paragraph_direction (&buffer_defaults, Qnil);
+ bset_cursor_type (&buffer_defaults, Qt);
+ bset_extra_line_spacing (&buffer_defaults, Qnil);
+ bset_cursor_in_non_selected_windows (&buffer_defaults, Qt);
+
+ bset_enable_multibyte_characters (&buffer_defaults, Qt);
+ bset_buffer_file_coding_system (&buffer_defaults, Qnil);
XSETFASTINT (BVAR (&buffer_defaults, fill_column), 70);
XSETFASTINT (BVAR (&buffer_defaults, left_margin), 0);
- BVAR (&buffer_defaults, cache_long_line_scans) = Qnil;
- BVAR (&buffer_defaults, file_truename) = Qnil;
+ bset_cache_long_scans (&buffer_defaults, Qnil);
+ bset_file_truename (&buffer_defaults, Qnil);
XSETFASTINT (BVAR (&buffer_defaults, display_count), 0);
XSETFASTINT (BVAR (&buffer_defaults, left_margin_cols), 0);
XSETFASTINT (BVAR (&buffer_defaults, right_margin_cols), 0);
- BVAR (&buffer_defaults, left_fringe_width) = Qnil;
- BVAR (&buffer_defaults, right_fringe_width) = Qnil;
- BVAR (&buffer_defaults, fringes_outside_margins) = Qnil;
- BVAR (&buffer_defaults, scroll_bar_width) = Qnil;
- BVAR (&buffer_defaults, vertical_scroll_bar_type) = Qt;
- BVAR (&buffer_defaults, indicate_empty_lines) = Qnil;
- BVAR (&buffer_defaults, indicate_buffer_boundaries) = Qnil;
- BVAR (&buffer_defaults, fringe_indicator_alist) = Qnil;
- BVAR (&buffer_defaults, fringe_cursor_alist) = Qnil;
- BVAR (&buffer_defaults, scroll_up_aggressively) = Qnil;
- BVAR (&buffer_defaults, scroll_down_aggressively) = Qnil;
- BVAR (&buffer_defaults, display_time) = Qnil;
+ bset_left_fringe_width (&buffer_defaults, Qnil);
+ bset_right_fringe_width (&buffer_defaults, Qnil);
+ bset_fringes_outside_margins (&buffer_defaults, Qnil);
+ bset_scroll_bar_width (&buffer_defaults, Qnil);
+ bset_vertical_scroll_bar_type (&buffer_defaults, Qt);
+ bset_indicate_empty_lines (&buffer_defaults, Qnil);
+ bset_indicate_buffer_boundaries (&buffer_defaults, Qnil);
+ bset_fringe_indicator_alist (&buffer_defaults, Qnil);
+ bset_fringe_cursor_alist (&buffer_defaults, Qnil);
+ bset_scroll_up_aggressively (&buffer_defaults, Qnil);
+ bset_scroll_down_aggressively (&buffer_defaults, Qnil);
+ bset_display_time (&buffer_defaults, Qnil);
/* Assign the local-flags to the slots that have default values.
The local flag is a bit that is used in the buffer
The local flag bits are in the local_var_flags slot of the buffer. */
/* Nothing can work if this isn't true */
- { verify (sizeof (EMACS_INT) == sizeof (Lisp_Object)); }
+ { verify (sizeof (EMACS_INT) == word_size); }
/* 0 means not a lisp var, -1 means always local, else mask */
memset (&buffer_local_flags, 0, sizeof buffer_local_flags);
- XSETINT (BVAR (&buffer_local_flags, filename), -1);
- XSETINT (BVAR (&buffer_local_flags, directory), -1);
- XSETINT (BVAR (&buffer_local_flags, backed_up), -1);
- XSETINT (BVAR (&buffer_local_flags, save_length), -1);
- XSETINT (BVAR (&buffer_local_flags, auto_save_file_name), -1);
- XSETINT (BVAR (&buffer_local_flags, read_only), -1);
- XSETINT (BVAR (&buffer_local_flags, major_mode), -1);
- XSETINT (BVAR (&buffer_local_flags, mode_name), -1);
- XSETINT (BVAR (&buffer_local_flags, undo_list), -1);
- XSETINT (BVAR (&buffer_local_flags, mark_active), -1);
- XSETINT (BVAR (&buffer_local_flags, point_before_scroll), -1);
- XSETINT (BVAR (&buffer_local_flags, file_truename), -1);
- XSETINT (BVAR (&buffer_local_flags, invisibility_spec), -1);
- XSETINT (BVAR (&buffer_local_flags, file_format), -1);
- XSETINT (BVAR (&buffer_local_flags, auto_save_file_format), -1);
- XSETINT (BVAR (&buffer_local_flags, display_count), -1);
- XSETINT (BVAR (&buffer_local_flags, display_time), -1);
- XSETINT (BVAR (&buffer_local_flags, enable_multibyte_characters), -1);
+ bset_filename (&buffer_local_flags, make_number (-1));
+ bset_directory (&buffer_local_flags, make_number (-1));
+ bset_backed_up (&buffer_local_flags, make_number (-1));
+ bset_save_length (&buffer_local_flags, make_number (-1));
+ bset_auto_save_file_name (&buffer_local_flags, make_number (-1));
+ bset_read_only (&buffer_local_flags, make_number (-1));
+ bset_major_mode (&buffer_local_flags, make_number (-1));
+ bset_mode_name (&buffer_local_flags, make_number (-1));
+ bset_undo_list (&buffer_local_flags, make_number (-1));
+ bset_mark_active (&buffer_local_flags, make_number (-1));
+ bset_point_before_scroll (&buffer_local_flags, make_number (-1));
+ bset_file_truename (&buffer_local_flags, make_number (-1));
+ bset_invisibility_spec (&buffer_local_flags, make_number (-1));
+ bset_file_format (&buffer_local_flags, make_number (-1));
+ bset_auto_save_file_format (&buffer_local_flags, make_number (-1));
+ bset_display_count (&buffer_local_flags, make_number (-1));
+ bset_display_time (&buffer_local_flags, make_number (-1));
+ bset_enable_multibyte_characters (&buffer_local_flags, make_number (-1));
idx = 1;
XSETFASTINT (BVAR (&buffer_local_flags, mode_line_format), idx); ++idx;
XSETFASTINT (BVAR (&buffer_local_flags, case_fold_search), idx); ++idx;
XSETFASTINT (BVAR (&buffer_local_flags, auto_fill_function), idx); ++idx;
XSETFASTINT (BVAR (&buffer_local_flags, selective_display), idx); ++idx;
-#ifndef old
XSETFASTINT (BVAR (&buffer_local_flags, selective_display_ellipses), idx); ++idx;
-#endif
XSETFASTINT (BVAR (&buffer_local_flags, tab_width), idx); ++idx;
XSETFASTINT (BVAR (&buffer_local_flags, truncate_lines), idx); ++idx;
XSETFASTINT (BVAR (&buffer_local_flags, word_wrap), idx); ++idx;
XSETFASTINT (BVAR (&buffer_local_flags, abbrev_table), idx); ++idx;
XSETFASTINT (BVAR (&buffer_local_flags, display_table), idx); ++idx;
XSETFASTINT (BVAR (&buffer_local_flags, syntax_table), idx); ++idx;
- XSETFASTINT (BVAR (&buffer_local_flags, cache_long_line_scans), idx); ++idx;
+ XSETFASTINT (BVAR (&buffer_local_flags, cache_long_scans), idx); ++idx;
XSETFASTINT (BVAR (&buffer_local_flags, category_table), idx); ++idx;
XSETFASTINT (BVAR (&buffer_local_flags, bidi_display_reordering), idx); ++idx;
XSETFASTINT (BVAR (&buffer_local_flags, bidi_paragraph_direction), idx); ++idx;
/* Need more room? */
if (idx >= MAX_PER_BUFFER_VARS)
- abort ();
+ emacs_abort ();
last_per_buffer_idx = idx;
Vbuffer_alist = Qnil;
current_buffer = 0;
all_buffers = 0;
- QSFundamental = make_pure_c_string ("Fundamental");
+ QSFundamental = build_pure_c_string ("Fundamental");
Qfundamental_mode = intern_c_string ("fundamental-mode");
- BVAR (&buffer_defaults, major_mode) = Qfundamental_mode;
+ bset_major_mode (&buffer_defaults, Qfundamental_mode);
Qmode_class = intern_c_string ("mode-class");
Qkill_buffer_hook = intern_c_string ("kill-buffer-hook");
Fput (Qkill_buffer_hook, Qpermanent_local, Qt);
- Qucs_set_table_for_input = intern_c_string ("ucs-set-table-for-input");
-
/* super-magic invisible buffer */
- Vprin1_to_string_buffer = Fget_buffer_create (make_pure_c_string (" prin1"));
+ Vprin1_to_string_buffer = Fget_buffer_create (build_pure_c_string (" prin1"));
Vbuffer_alist = Qnil;
- Fset_buffer (Fget_buffer_create (make_pure_c_string ("*scratch*")));
+ Fset_buffer (Fget_buffer_create (build_pure_c_string ("*scratch*")));
inhibit_modification_hooks = 0;
}
Map new memory. */
struct buffer *b;
- for (b = all_buffers; b; b = b->header.next.buffer)
+ FOR_EACH_BUFFER (b)
if (b->text->beg == NULL)
enlarge_buffer_text (b, 0);
}
if (!(IS_DIRECTORY_SEP (pwd[len - 1])))
{
/* Grow buffer to add directory separator and '\0'. */
- pwd = (char *) realloc (pwd, len + 2);
+ pwd = realloc (pwd, len + 2);
if (!pwd)
fatal ("`get_current_dir_name' failed: %s\n", strerror (errno));
pwd[len] = DIRECTORY_SEP;
pwd[len + 1] = '\0';
+ len++;
}
- BVAR (current_buffer, directory) = make_unibyte_string (pwd, strlen (pwd));
+ bset_directory (current_buffer, make_unibyte_string (pwd, len));
if (! NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))
/* At this moment, we still don't know how to decode the
directory name. So, we keep the bytes in multibyte form so
that ENCODE_FILE correctly gets the original bytes. */
- BVAR (current_buffer, directory)
- = string_to_multibyte (BVAR (current_buffer, directory));
+ bset_directory
+ (current_buffer, string_to_multibyte (BVAR (current_buffer, directory)));
/* Add /: to the front of the name
if it would otherwise be treated as magic. */
However, it is not necessary to turn / into /:/.
So avoid doing that. */
&& strcmp ("/", SSDATA (BVAR (current_buffer, directory))))
- BVAR (current_buffer, directory)
- = concat2 (build_string ("/:"), BVAR (current_buffer, directory));
+ bset_directory
+ (current_buffer,
+ concat2 (build_string ("/:"), BVAR (current_buffer, directory)));
temp = get_minibuffer (0);
- BVAR (XBUFFER (temp), directory) = BVAR (current_buffer, directory);
+ bset_directory (XBUFFER (temp), BVAR (current_buffer, directory));
free (pwd);
}
-/* Similar to defvar_lisp but define a variable whose value is the Lisp
- Object stored in the current buffer. address is the address of the slot
- in the buffer that is current now. */
-
-/* TYPE is nil for a general Lisp variable.
- An integer specifies a type; then only Lisp values
- with that type code are allowed (except that nil is allowed too).
- LNAME is the Lisp-level variable name.
- VNAME is the name of the buffer slot.
- DOC is a dummy where you write the doc string as a comment. */
-#define DEFVAR_PER_BUFFER(lname, vname, type, doc) \
- do { \
- static struct Lisp_Buffer_Objfwd bo_fwd; \
- defvar_per_buffer (&bo_fwd, lname, vname, type); \
+/* Similar to defvar_lisp but define a variable whose value is the
+ Lisp_Object stored in the current buffer. LNAME is the Lisp-level
+ variable name. VNAME is the name of the buffer slot. PREDICATE
+ is nil for a general Lisp variable. If PREDICATE is non-nil, then
+ only Lisp values that satisfies the PREDICATE are allowed (except
+ that nil is allowed too). DOC is a dummy where you write the doc
+ string as a comment. */
+
+#define DEFVAR_PER_BUFFER(lname, vname, predicate, doc) \
+ do { \
+ static struct Lisp_Buffer_Objfwd bo_fwd; \
+ defvar_per_buffer (&bo_fwd, lname, vname, predicate); \
} while (0)
static void
defvar_per_buffer (struct Lisp_Buffer_Objfwd *bo_fwd, const char *namestring,
- Lisp_Object *address, Lisp_Object type)
+ Lisp_Object *address, Lisp_Object predicate)
{
struct Lisp_Symbol *sym;
int offset;
bo_fwd->type = Lisp_Fwd_Buffer_Obj;
bo_fwd->offset = offset;
- bo_fwd->slottype = type;
+ bo_fwd->predicate = predicate;
sym->declared_special = 1;
sym->redirect = SYMBOL_FORWARDED;
- {
- /* I tried to do the job without a cast, but it seems impossible.
- union Lisp_Fwd *fwd; &(fwd->u_buffer_objfwd) = bo_fwd; */
- SET_SYMBOL_FWD (sym, (union Lisp_Fwd *)bo_fwd);
- }
+ SET_SYMBOL_FWD (sym, (union Lisp_Fwd *) bo_fwd);
XSETSYMBOL (PER_BUFFER_SYMBOL (offset), sym);
if (PER_BUFFER_IDX (offset) == 0)
/* Did a DEFVAR_PER_BUFFER without initializing the corresponding
slot of buffer_local_flags */
- abort ();
+ emacs_abort ();
}
last_overlay_modification_hooks
= Fmake_vector (make_number (10), Qnil);
- staticpro (&Vbuffer_defaults);
- staticpro (&Vbuffer_local_symbols);
staticpro (&Qfundamental_mode);
staticpro (&Qmode_class);
staticpro (&QSFundamental);
DEFSYM (Qafter_change_functions, "after-change-functions");
DEFSYM (Qkill_buffer_query_functions, "kill-buffer-query-functions");
- /* The next one is initialized in init_buffer_once. */
- staticpro (&Qucs_set_table_for_input);
-
Fput (Qprotected_field, Qerror_conditions,
- pure_cons (Qprotected_field, pure_cons (Qerror, Qnil)));
+ listn (CONSTYPE_PURE, 2, Qprotected_field, Qerror));
Fput (Qprotected_field, Qerror_message,
- make_pure_c_string ("Attempt to modify a protected field"));
+ build_pure_c_string ("Attempt to modify a protected field"));
DEFVAR_BUFFER_DEFAULTS ("default-mode-line-format",
mode_line_format,
DEFVAR_BUFFER_DEFAULTS ("default-enable-multibyte-characters",
enable_multibyte_characters,
- doc: /* *Default value of `enable-multibyte-characters' for buffers not overriding it.
+ doc: /* Default value of `enable-multibyte-characters' for buffers not overriding it.
This is the same as (default-value 'enable-multibyte-characters). */);
DEFVAR_BUFFER_DEFAULTS ("default-buffer-file-coding-system",
DEFVAR_BUFFER_DEFAULTS ("default-tab-width",
tab_width,
doc: /* Default value of `tab-width' for buffers that do not override it.
+NOTE: This controls the display width of a TAB character, and not
+the size of an indentation step.
This is the same as (default-value 'tab-width). */);
DEFVAR_BUFFER_DEFAULTS ("default-case-fold-search",
DEFVAR_PER_BUFFER ("mode-line-format", &BVAR (current_buffer, mode_line_format),
Qnil,
doc: /* Template for displaying mode line for current buffer.
-Each buffer has its own value of this variable.
-Value may be nil, a string, a symbol or a list or cons cell.
+
+The value may be nil, a string, a symbol or a list.
+
A value of nil means don't display a mode line.
-For a symbol, its value is used (but it is ignored if t or nil).
- A string appearing directly as the value of a symbol is processed verbatim
- in that the %-constructs below are not recognized.
- Note that unless the symbol is marked as a `risky-local-variable', all
- properties in any strings, as well as all :eval and :propertize forms
- in the value of that symbol will be ignored.
-For a list of the form `(:eval FORM)', FORM is evaluated and the result
- is used as a mode line element. Be careful--FORM should not load any files,
- because that can cause an infinite recursion.
-For a list of the form `(:propertize ELT PROPS...)', ELT is displayed
- with the specified properties PROPS applied.
-For a list whose car is a symbol, the symbol's value is taken,
- and if that is non-nil, the cadr of the list is processed recursively.
- Otherwise, the caddr of the list (if there is one) is processed.
-For a list whose car is a string or list, each element is processed
- recursively and the results are effectively concatenated.
-For a list whose car is an integer, the cdr of the list is processed
- and padded (if the number is positive) or truncated (if negative)
- to the width specified by that number.
+
+For any symbol other than t or nil, the symbol's value is processed as
+ a mode line construct. As a special exception, if that value is a
+ string, the string is processed verbatim, without handling any
+ %-constructs (see below). Also, unless the symbol has a non-nil
+ `risky-local-variable' property, all properties in any strings, as
+ well as all :eval and :propertize forms in the value, are ignored.
+
+A list whose car is a string or list is processed by processing each
+ of the list elements recursively, as separate mode line constructs,
+ and concatenating the results.
+
+A list of the form `(:eval FORM)' is processed by evaluating FORM and
+ using the result as a mode line construct. Be careful--FORM should
+ not load any files, because that can cause an infinite recursion.
+
+A list of the form `(:propertize ELT PROPS...)' is processed by
+ processing ELT as the mode line construct, and adding the text
+ properties PROPS to the result.
+
+A list whose car is a symbol is processed by examining the symbol's
+ value, and, if that value is non-nil, processing the cadr of the list
+ recursively; and if that value is nil, processing the caddr of the
+ list recursively.
+
+A list whose car is an integer is processed by processing the cadr of
+ the list, and padding (if the number is positive) or truncating (if
+ negative) to the width specified by that number.
+
A string is printed verbatim in the mode line except for %-constructs:
- (%-constructs are allowed when the string is the entire mode-line-format
- or when it is found in a cons-cell or a list)
%b -- print buffer name. %f -- print visited file name.
%F -- print frame name.
%* -- print %, * or hyphen. %+ -- print *, % or hyphen.
Decimal digits after the % specify field width to which to pad. */);
DEFVAR_BUFFER_DEFAULTS ("default-major-mode", major_mode,
- doc: /* *Value of `major-mode' for new buffers. */);
+ doc: /* Value of `major-mode' for new buffers. */);
DEFVAR_PER_BUFFER ("major-mode", &BVAR (current_buffer, major_mode),
- make_number (Lisp_Symbol),
+ Qsymbolp,
doc: /* Symbol for current buffer's major mode.
The default value (normally `fundamental-mode') affects new buffers.
A value of nil means to use the current buffer's major mode, provided
DEFVAR_PER_BUFFER ("case-fold-search", &BVAR (current_buffer, case_fold_search),
Qnil,
- doc: /* *Non-nil if searches and matches should ignore case. */);
+ doc: /* Non-nil if searches and matches should ignore case. */);
DEFVAR_PER_BUFFER ("fill-column", &BVAR (current_buffer, fill_column),
- make_number (LISP_INT_TAG),
- doc: /* *Column beyond which automatic line-wrapping should happen.
+ Qintegerp,
+ doc: /* Column beyond which automatic line-wrapping should happen.
Interactively, you can set the buffer local value using \\[set-fill-column]. */);
DEFVAR_PER_BUFFER ("left-margin", &BVAR (current_buffer, left_margin),
- make_number (LISP_INT_TAG),
- doc: /* *Column for the default `indent-line-function' to indent to.
+ Qintegerp,
+ doc: /* Column for the default `indent-line-function' to indent to.
Linefeed indents to this column in Fundamental mode. */);
DEFVAR_PER_BUFFER ("tab-width", &BVAR (current_buffer, tab_width),
- make_number (LISP_INT_TAG),
- doc: /* *Distance between tab stops (for display of tab characters), in columns.
+ Qintegerp,
+ doc: /* Distance between tab stops (for display of tab characters), in columns.
+NOTE: This controls the display width of a TAB character, and not
+the size of an indentation step.
This should be an integer greater than zero. */);
DEFVAR_PER_BUFFER ("ctl-arrow", &BVAR (current_buffer, ctl_arrow), Qnil,
- doc: /* *Non-nil means display control chars with uparrow.
+ doc: /* Non-nil means display control chars with uparrow.
A value of nil means use backslash and octal digits.
This variable does not apply to characters whose display is specified
in the current display table (if there is one). */);
DEFVAR_PER_BUFFER ("bidi-paragraph-direction",
&BVAR (current_buffer, bidi_paragraph_direction), Qnil,
- doc: /* *If non-nil, forces directionality of text paragraphs in the buffer.
+ doc: /* If non-nil, forces directionality of text paragraphs in the buffer.
If this is nil (the default), the direction of each paragraph is
determined by the first strong directional character of its text.
\`bidi-display-reordering' is non-nil. */);
DEFVAR_PER_BUFFER ("truncate-lines", &BVAR (current_buffer, truncate_lines), Qnil,
- doc: /* *Non-nil means do not display continuation lines.
+ doc: /* Non-nil means do not display continuation lines.
Instead, give each line of text just one screen line.
Note that this is overridden by the variable
Minibuffers set this variable to nil. */);
DEFVAR_PER_BUFFER ("word-wrap", &BVAR (current_buffer, word_wrap), Qnil,
- doc: /* *Non-nil means to use word-wrapping for continuation lines.
+ doc: /* Non-nil means to use word-wrapping for continuation lines.
When word-wrapping is on, continuation lines are wrapped at the space
or tab character nearest to the right window edge.
If nil, continuation lines are wrapped at the right screen edge.
`truncate-lines' and `truncate-partial-width-windows'). If you use
word-wrapping, you might want to reduce the value of
`truncate-partial-width-windows', since wrapping can make text readable
-in narrower windows. */);
+in narrower windows.
+
+Instead of setting this variable directly, most users should use
+Visual Line mode . Visual Line mode, when enabled, sets `word-wrap'
+to t, and additionally redefines simple editing commands to act on
+visual lines rather than logical lines. See the documentation of
+`visual-line-mode'. */);
DEFVAR_PER_BUFFER ("default-directory", &BVAR (current_buffer, directory),
- make_number (Lisp_String),
+ Qstringp,
doc: /* Name of default directory of current buffer. Should end with slash.
To interactively change the default directory, use command `cd'. */);
its value may not be a list of functions. */);
DEFVAR_PER_BUFFER ("buffer-file-name", &BVAR (current_buffer, filename),
- make_number (Lisp_String),
+ Qstringp,
doc: /* Name of file visited in current buffer, or nil if not visiting a file. */);
DEFVAR_PER_BUFFER ("buffer-file-truename", &BVAR (current_buffer, file_truename),
- make_number (Lisp_String),
+ Qstringp,
doc: /* Abbreviated truename of file visited in current buffer, or nil if none.
The truename of a file is calculated by `file-truename'
and then abbreviated with `abbreviate-file-name'. */);
DEFVAR_PER_BUFFER ("buffer-auto-save-file-name",
&BVAR (current_buffer, auto_save_file_name),
- make_number (Lisp_String),
+ Qstringp,
doc: /* Name of file for auto-saving current buffer.
If it is nil, that means don't auto-save this buffer. */);
Backing up is done before the first time the file is saved. */);
DEFVAR_PER_BUFFER ("buffer-saved-size", &BVAR (current_buffer, save_length),
- make_number (LISP_INT_TAG),
+ Qintegerp,
doc: /* Length of current buffer when last read in, saved or auto-saved.
0 initially.
-1 means auto-saving turned off until next real save.
all the rest of the line invisible; also, when saving the buffer
in a file, save the ^M as a newline. */);
-#ifndef old
DEFVAR_PER_BUFFER ("selective-display-ellipses",
&BVAR (current_buffer, selective_display_ellipses),
Qnil,
doc: /* Non-nil means display ... on previous line when a line is invisible. */);
-#endif
DEFVAR_PER_BUFFER ("overwrite-mode", &BVAR (current_buffer, overwrite_mode), Qnil,
doc: /* Non-nil if self-insertion should replace existing text.
See also the functions `display-table-slot' and `set-display-table-slot'. */);
DEFVAR_PER_BUFFER ("left-margin-width", &BVAR (current_buffer, left_margin_cols),
- Qnil,
- doc: /* *Width of left marginal area for display of a buffer.
-A value of nil means no marginal area. */);
+ Qintegerp,
+ doc: /* Width of left marginal area for display of a buffer.
+A value of nil means no marginal area.
+
+Setting this variable does not take effect until a new buffer is displayed
+in a window. To make the change take effect, call `set-window-buffer'. */);
DEFVAR_PER_BUFFER ("right-margin-width", &BVAR (current_buffer, right_margin_cols),
- Qnil,
- doc: /* *Width of right marginal area for display of a buffer.
-A value of nil means no marginal area. */);
+ Qintegerp,
+ doc: /* Width of right marginal area for display of a buffer.
+A value of nil means no marginal area.
+
+Setting this variable does not take effect until a new buffer is displayed
+in a window. To make the change take effect, call `set-window-buffer'. */);
DEFVAR_PER_BUFFER ("left-fringe-width", &BVAR (current_buffer, left_fringe_width),
- Qnil,
- doc: /* *Width of this buffer's left fringe (in pixels).
+ Qintegerp,
+ doc: /* Width of this buffer's left fringe (in pixels).
A value of 0 means no left fringe is shown in this buffer's window.
-A value of nil means to use the left fringe width from the window's frame. */);
+A value of nil means to use the left fringe width from the window's frame.
+
+Setting this variable does not take effect until a new buffer is displayed
+in a window. To make the change take effect, call `set-window-buffer'. */);
DEFVAR_PER_BUFFER ("right-fringe-width", &BVAR (current_buffer, right_fringe_width),
- Qnil,
- doc: /* *Width of this buffer's right fringe (in pixels).
+ Qintegerp,
+ doc: /* Width of this buffer's right fringe (in pixels).
A value of 0 means no right fringe is shown in this buffer's window.
-A value of nil means to use the right fringe width from the window's frame. */);
+A value of nil means to use the right fringe width from the window's frame.
+
+Setting this variable does not take effect until a new buffer is displayed
+in a window. To make the change take effect, call `set-window-buffer'. */);
DEFVAR_PER_BUFFER ("fringes-outside-margins", &BVAR (current_buffer, fringes_outside_margins),
Qnil,
- doc: /* *Non-nil means to display fringes outside display margins.
-A value of nil means to display fringes between margins and buffer text. */);
+ doc: /* Non-nil means to display fringes outside display margins.
+A value of nil means to display fringes between margins and buffer text.
+
+Setting this variable does not take effect until a new buffer is displayed
+in a window. To make the change take effect, call `set-window-buffer'. */);
DEFVAR_PER_BUFFER ("scroll-bar-width", &BVAR (current_buffer, scroll_bar_width),
- Qnil,
- doc: /* *Width of this buffer's scroll bars in pixels.
+ Qintegerp,
+ doc: /* Width of this buffer's scroll bars in pixels.
A value of nil means to use the scroll bar width from the window's frame. */);
DEFVAR_PER_BUFFER ("vertical-scroll-bar", &BVAR (current_buffer, vertical_scroll_bar_type),
Qnil,
- doc: /* *Position of this buffer's vertical scroll bar.
+ doc: /* Position of this buffer's vertical scroll bar.
The value takes effect whenever you tell a window to display this buffer;
for instance, with `set-window-buffer' or when `display-buffer' displays it.
DEFVAR_PER_BUFFER ("indicate-empty-lines",
&BVAR (current_buffer, indicate_empty_lines), Qnil,
- doc: /* *Visually indicate empty lines after the buffer end.
+ doc: /* Visually indicate empty lines after the buffer end.
If non-nil, a bitmap is displayed in the left fringe of a window on
window-systems. */);
DEFVAR_PER_BUFFER ("indicate-buffer-boundaries",
&BVAR (current_buffer, indicate_buffer_boundaries), Qnil,
- doc: /* *Visually indicate buffer boundaries and scrolling.
+ doc: /* Visually indicate buffer boundaries and scrolling.
If non-nil, the first and last line of the buffer are marked in the fringe
of a window on window-systems with angle bitmaps, or if the window can be
scrolled, the top and bottom line of the window are marked with up and down
DEFVAR_PER_BUFFER ("fringe-indicator-alist",
&BVAR (current_buffer, fringe_indicator_alist), Qnil,
- doc: /* *Mapping from logical to physical fringe indicator bitmaps.
+ doc: /* Mapping from logical to physical fringe indicator bitmaps.
The value is an alist where each element (INDICATOR . BITMAPS)
specifies the fringe bitmaps used to display a specific logical
fringe indicator.
DEFVAR_PER_BUFFER ("fringe-cursor-alist",
&BVAR (current_buffer, fringe_cursor_alist), Qnil,
- doc: /* *Mapping from logical to physical fringe cursor bitmaps.
+ doc: /* Mapping from logical to physical fringe cursor bitmaps.
The value is an alist where each element (CURSOR . BITMAP)
specifies the fringe bitmaps used to display a specific logical
cursor type in the fringe.
cursor type. */);
DEFVAR_PER_BUFFER ("scroll-up-aggressively",
- &BVAR (current_buffer, scroll_up_aggressively), Qnil,
+ &BVAR (current_buffer, scroll_up_aggressively), Qfloatp,
doc: /* How far to scroll windows upward.
If you move point off the bottom, the window scrolls automatically.
This variable controls how far it scrolls. The value nil, the default,
between 0.0 and 1.0, inclusive. */);
DEFVAR_PER_BUFFER ("scroll-down-aggressively",
- &BVAR (current_buffer, scroll_down_aggressively), Qnil,
+ &BVAR (current_buffer, scroll_down_aggressively), Qfloatp,
doc: /* How far to scroll windows downward.
If you move point off the top, the window scrolls automatically.
This variable controls how far it scrolls. The value nil, the default,
window scrolls by a full window height. Meaningful values are
between 0.0 and 1.0, inclusive. */);
-/*DEFVAR_LISP ("debug-check-symbol", &Vcheck_symbol,
- "Don't ask.");
-*/
-
DEFVAR_LISP ("before-change-functions", Vbefore_change_functions,
doc: /* List of functions to call before each text change.
Two arguments are passed to each function: the positions of
from (abs POSITION). If POSITION is positive, point was at the front
of the text being deleted; if negative, point was at the end.
-An entry (t HIGH . LOW) indicates that the buffer previously had
-\"unmodified\" status. HIGH and LOW are the high and low 16-bit portions
-of the visited file's modification time, as of that time. If the
+An entry (t HIGH LOW USEC PSEC) indicates that the buffer was previously
+unmodified; (HIGH LOW USEC PSEC) is in the same style as (current-time)
+and is the visited file's modification time, as of that time. If the
modification time of the most recent save is different, this entry is
obsolete.
+An entry (t . 0) means means the buffer was previously unmodified but
+its time stamp was unknown because it was not associated with a file.
+An entry (t . -1) is similar, except that it means the buffer's visited
+file did not exist.
+
An entry (nil PROPERTY VALUE BEG . END) indicates that a text property
was modified between BEG and END. PROPERTY is the property name,
and VALUE is the old value.
DEFVAR_PER_BUFFER ("mark-active", &BVAR (current_buffer, mark_active), Qnil,
doc: /* Non-nil means the mark and region are currently active in this buffer. */);
- DEFVAR_PER_BUFFER ("cache-long-line-scans", &BVAR (current_buffer, cache_long_line_scans), Qnil,
- doc: /* Non-nil means that Emacs should use caches to handle long lines more quickly.
+ DEFVAR_PER_BUFFER ("cache-long-scans", &BVAR (current_buffer, cache_long_scans), Qnil,
+ doc: /* Non-nil means that Emacs should use caches in attempt to speedup buffer scans.
Normally, the line-motion functions work by scanning the buffer for
newlines. Columnar operations (like `move-to-column' and
motion functions will take longer to execute. Emacs may also take
longer to update the display.
-If `cache-long-line-scans' is non-nil, these motion functions cache the
+If `cache-long-scans' is non-nil, these motion functions cache the
results of their scans, and consult the cache to avoid rescanning
regions of the buffer until the text is modified. The caches are most
beneficial when they prevent the most searching---that is, when the
buffer contains long lines and large regions of characters with the
same, fixed screen width.
-When `cache-long-line-scans' is non-nil, processing short lines will
+When `cache-long-scans' is non-nil, processing short lines will
become slightly slower (because of the overhead of consulting the
cache), and the caches will use memory roughly proportional to the
number of newlines and characters whose screen width varies.
+Bidirectional editing also requires buffer scans to find paragraph
+separators. If you have large paragraphs or no paragraph separators
+at all, these scans may be slow. If `cache-long-scans' is non-nil,
+results of these scans are cached. This doesn't help too much if
+paragraphs are of the reasonable (few thousands of characters) size.
+
The caches require no explicit maintenance; their accuracy is
maintained internally by the Emacs primitives. Enabling or disabling
the cache should not affect the behavior of any of the motion
DEFVAR_PER_BUFFER ("buffer-auto-save-file-format",
&BVAR (current_buffer, auto_save_file_format), Qnil,
- doc: /* *Format in which to write auto-save files.
+ doc: /* Format in which to write auto-save files.
Should be a list of symbols naming formats that are defined in `format-alist'.
If it is t, which is the default, auto-save files are written in the
same format as a regular save would use. */);
and they have an ellipsis as well if ELLIPSIS is non-nil. */);
DEFVAR_PER_BUFFER ("buffer-display-count",
- &BVAR (current_buffer, display_count), Qnil,
+ &BVAR (current_buffer, display_count), Qintegerp,
doc: /* A number incremented each time this buffer is displayed in a window.
The function `set-window-buffer' increments it. */);
Vtransient_mark_mode = Qnil;
DEFVAR_LISP ("inhibit-read-only", Vinhibit_read_only,
- doc: /* *Non-nil means disregard read-only status of buffers or characters.
+ doc: /* Non-nil means disregard read-only status of buffers or characters.
If the value is t, disregard `buffer-read-only' and all `read-only'
text properties. If the value is a list, disregard `buffer-read-only'
and disregard a `read-only' text property if the property value
doc: /* Cursor to use when this buffer is in the selected window.
Values are interpreted as follows:
- t use the cursor specified for the frame
- nil don't display a cursor
- box display a filled box cursor
- hollow display a hollow box cursor
- bar display a vertical bar cursor with default width
- (bar . WIDTH) display a vertical bar cursor with width WIDTH
- hbar display a horizontal bar cursor with default height
+ t use the cursor specified for the frame
+ nil don't display a cursor
+ box display a filled box cursor
+ hollow display a hollow box cursor
+ bar display a vertical bar cursor with default width
+ (bar . WIDTH) display a vertical bar cursor with width WIDTH
+ hbar display a horizontal bar cursor with default height
(hbar . HEIGHT) display a horizontal bar cursor with height HEIGHT
- ANYTHING ELSE display a hollow box cursor
+ ANYTHING ELSE display a hollow box cursor
When the buffer is displayed in a non-selected window, the
cursor's appearance is instead controlled by the variable
`cursor-in-non-selected-windows'. */);
DEFVAR_PER_BUFFER ("line-spacing",
- &BVAR (current_buffer, extra_line_spacing), Qnil,
+ &BVAR (current_buffer, extra_line_spacing), Qnumberp,
doc: /* Additional space to put between lines when displaying a buffer.
The space is measured in pixels, and put below lines on graphic displays,
see `display-graphic-p'.
DEFVAR_PER_BUFFER ("cursor-in-non-selected-windows",
&BVAR (current_buffer, cursor_in_non_selected_windows), Qnil,
- doc: /* *Non-nil means show a cursor in non-selected windows.
+ doc: /* Non-nil means show a cursor in non-selected windows.
If nil, only shows a cursor in the selected window.
If t, displays a cursor related to the usual cursor type
\(a solid box becomes hollow, a bar becomes a narrower bar).
DEFVAR_LISP ("kill-buffer-query-functions", Vkill_buffer_query_functions,
doc: /* List of functions called with no args to query before killing a buffer.
The buffer being killed will be current while the functions are running.
-If any of them returns nil, the buffer is not killed. */);
+
+If any of them returns nil, the buffer is not killed. Functions run by
+this hook are supposed to not change the current buffer. */);
Vkill_buffer_query_functions = Qnil;
DEFVAR_LISP ("change-major-mode-hook", Vchange_major_mode_hook,
defsubr (&Smake_indirect_buffer);
defsubr (&Sgenerate_new_buffer_name);
defsubr (&Sbuffer_name);
-/*defsubr (&Sbuffer_number);*/
defsubr (&Sbuffer_file_name);
defsubr (&Sbuffer_base_buffer);
defsubr (&Sbuffer_local_value);
defsubr (&Soverlayp);
defsubr (&Smake_overlay);
defsubr (&Sdelete_overlay);
+ defsubr (&Sdelete_all_overlays);
defsubr (&Smove_overlay);
defsubr (&Soverlay_start);
defsubr (&Soverlay_end);