/* Buffer manipulation primitives for GNU Emacs.
-Copyright (C) 1985-1989, 1993-1995, 1997-2015 Free Software Foundation,
+Copyright (C) 1985-1989, 1993-1995, 1997-2016 Free Software Foundation,
Inc.
This file is part of GNU Emacs.
#include <verify.h>
#include "lisp.h"
+#include "coding.h"
#include "intervals.h"
+#include "systime.h"
#include "window.h"
#include "commands.h"
#include "character.h"
#include "region-cache.h"
#include "indent.h"
#include "blockinput.h"
-#include "keyboard.h"
#include "keymap.h"
#include "frame.h"
+#ifdef HAVE_XWIDGETS
+# include "xwidget.h"
+#endif
#ifdef WINDOWSNT
#include "w32heap.h" /* for mmap_* */
#endif
doc: /* Return a string that is the name of no existing buffer based on NAME.
If there is no live buffer named NAME, then return NAME.
Otherwise modify name by appending `<NUMBER>', incrementing NUMBER
-\(starting at 2) until an unused name is found, and then return that name.
+(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.
Sbuffer_chars_modified_tick, 0, 1, 0,
doc: /* Return BUFFER's character-change tick counter.
Each buffer has a character-change tick counter, which is set to the
-value of the buffer's tick counter \(see `buffer-modified-tick'), each
+value of the buffer's tick counter (see `buffer-modified-tick'), each
time text in that buffer is inserted or deleted. By comparing the
values returned by two individual calls of `buffer-chars-modified-tick',
you can tell whether a character change occurred in that buffer in
(Lisp_Object buffer_or_name)
{
Lisp_Object buffer;
- register struct buffer *b;
- register Lisp_Object tem;
- register struct Lisp_Marker *m;
- struct gcpro gcpro1;
+ struct buffer *b;
+ Lisp_Object tem;
+ struct Lisp_Marker *m;
if (NILP (buffer_or_name))
buffer = Fcurrent_buffer ();
if (INTERACTIVE && !NILP (BVAR (b, filename))
&& BUF_MODIFF (b) > BUF_SAVE_MODIFF (b))
{
- GCPRO1 (buffer);
AUTO_STRING (format, "Buffer %s modified; kill anyway? ");
tem = do_yes_or_no_p (CALLN (Fformat, format, BVAR (b, name)));
- UNGCPRO;
if (NILP (tem))
return unbind_to (count, Qnil);
}
{
struct buffer *other;
- GCPRO1 (buffer);
-
FOR_EACH_BUFFER (other)
if (other->base_buffer == b)
{
Fkill_buffer (buf);
}
- UNGCPRO;
-
/* Exit if we now have killed the base buffer (Bug#11665). */
if (!BUFFER_LIVE_P (b))
return Qt;
/* Unlock this buffer's file, if it is locked. */
unlock_buffer (b);
- GCPRO1 (buffer);
kill_buffer_processes (buffer);
- UNGCPRO;
+#ifdef HAVE_XWIDGETS
+ kill_buffer_xwidgets (buffer);
+#endif
/* Killing buffer processes may run sentinels which may have killed
our buffer. */
if (!BUFFER_LIVE_P (b))
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;
if (current_buffer->base_buffer)
error ("Cannot do `set-buffer-multibyte' on an indirect buffer");
if (NILP (flag) == NILP (BVAR (current_buffer, enable_multibyte_characters)))
return flag;
- GCPRO1 (old_undo);
-
/* Don't record these buffer changes. We will put a special undo entry
instead. */
bset_undo_list (current_buffer, Qt);
old_undo));
}
- UNGCPRO;
-
current_buffer->prevent_redisplay_optimizations_p = 1;
/* If buffer is shown in a window, let redisplay consider other windows. */
else
nbytes = SBYTES (str);
- if (INT_ADD_OVERFLOW (ssl->bytes, nbytes))
+ if (INT_ADD_WRAPV (ssl->bytes, nbytes, &nbytes))
memory_full (SIZE_MAX);
- ssl->bytes += nbytes;
+ ssl->bytes = nbytes;
if (STRINGP (str2))
{
else
nbytes = SBYTES (str2);
- if (INT_ADD_OVERFLOW (ssl->bytes, nbytes))
+ if (INT_ADD_WRAPV (ssl->bytes, nbytes, &nbytes))
memory_full (SIZE_MAX);
- ssl->bytes += nbytes;
+ ssl->bytes = nbytes;
}
}
unsigned char *p;
ptrdiff_t total;
- if (INT_ADD_OVERFLOW (overlay_heads.bytes, overlay_tails.bytes))
+ if (INT_ADD_WRAPV (overlay_heads.bytes, overlay_tails.bytes, &total))
memory_full (SIZE_MAX);
- total = overlay_heads.bytes + overlay_tails.bytes;
if (total > overlay_str_len)
overlay_str_buf = xpalloc (overlay_str_buf, &overlay_str_len,
total - overlay_str_len, -1, 1);
BEG and END may be integers or markers.
The fourth arg FRONT-ADVANCE, if non-nil, makes the marker
for the front of the overlay advance when text is inserted there
-\(which means the text *is not* included in the overlay).
+(which means the text *is not* included in the overlay).
The fifth arg REAR-ADVANCE, if non-nil, makes the marker
for the rear of the overlay advance when text is inserted there
-\(which means the text *is* included in the overlay). */)
+(which means the text *is* included in the overlay). */)
(Lisp_Object beg, Lisp_Object end, Lisp_Object buffer,
Lisp_Object front_advance, Lisp_Object rear_advance)
{
struct Lisp_Overlay *tail;
/* True if this change is an insertion. */
bool insertion = (after ? XFASTINT (arg3) == 0 : EQ (start, end));
- struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
overlay = Qnil;
tail = NULL;
}
}
- GCPRO4 (overlay, arg1, arg2, arg3);
{
/* Call the functions recorded in last_overlay_modification_hooks.
First copy the vector contents, in case some of these hooks
Lisp_Object *copy;
ptrdiff_t i;
+ if (size)
+ {
+ Lisp_Object ovl
+ = XVECTOR (last_overlay_modification_hooks)->contents[1];
+
+ /* If the buffer of the first overlay in the array doesn't
+ match the current buffer, then these modification hooks
+ should not be run in this buffer. This could happen when
+ some code calls some insdel functions, such as del_range_1,
+ with the PREPARE argument false -- in that case this
+ function is never called to record the overlay modification
+ hook functions in the last_overlay_modification_hooks
+ array, so anything we find there is not ours. */
+ if (XMARKER (OVERLAY_START (ovl))->buffer != current_buffer)
+ return;
+ }
+
USE_SAFE_ALLOCA;
SAFE_ALLOCA_LISP (copy, size);
memcpy (copy, XVECTOR (last_overlay_modification_hooks)->contents,
SAFE_FREE ();
}
- UNGCPRO;
}
static void
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;
-
- GCPRO4 (list, arg1, arg2, arg3);
-
while (CONSP (list))
{
if (NILP (arg3))
call5 (XCAR (list), overlay, after ? Qt : Qnil, arg1, arg2, arg3);
list = XCDR (list);
}
- UNGCPRO;
}
/* Delete any zero-sized overlays at position POS, if the `evaporate'
#include <fcntl.h>
#endif
-#include "coding.h"
-
/* Memory is allocated in regions which are mapped using mmap(2).
The current implementation lets the system select mapped
DEFVAR_BUFFER_DEFAULTS ("default-mode-line-format",
mode_line_format,
doc: /* Default value of `mode-line-format' for buffers that don't override it.
-This is the same as (default-value 'mode-line-format). */);
+This is the same as (default-value \\='mode-line-format). */);
DEFVAR_BUFFER_DEFAULTS ("default-header-line-format",
header_line_format,
doc: /* Default value of `header-line-format' for buffers that don't override it.
-This is the same as (default-value 'header-line-format). */);
+This is the same as (default-value \\='header-line-format). */);
DEFVAR_BUFFER_DEFAULTS ("default-cursor-type", cursor_type,
doc: /* Default value of `cursor-type' for buffers that don't override it.
-This is the same as (default-value 'cursor-type). */);
+This is the same as (default-value \\='cursor-type). */);
DEFVAR_BUFFER_DEFAULTS ("default-line-spacing",
extra_line_spacing,
doc: /* Default value of `line-spacing' for buffers that don't override it.
-This is the same as (default-value 'line-spacing). */);
+This is the same as (default-value \\='line-spacing). */);
DEFVAR_BUFFER_DEFAULTS ("default-cursor-in-non-selected-windows",
cursor_in_non_selected_windows,
doc: /* Default value of `cursor-in-non-selected-windows'.
-This is the same as (default-value 'cursor-in-non-selected-windows). */);
+This is the same as (default-value \\='cursor-in-non-selected-windows). */);
DEFVAR_BUFFER_DEFAULTS ("default-abbrev-mode",
abbrev_mode,
doc: /* Default value of `abbrev-mode' for buffers that do not override it.
-This is the same as (default-value 'abbrev-mode). */);
+This is the same as (default-value \\='abbrev-mode). */);
DEFVAR_BUFFER_DEFAULTS ("default-ctl-arrow",
ctl_arrow,
doc: /* Default value of `ctl-arrow' for buffers that do not override it.
-This is the same as (default-value 'ctl-arrow). */);
+This is the same as (default-value \\='ctl-arrow). */);
DEFVAR_BUFFER_DEFAULTS ("default-enable-multibyte-characters",
enable_multibyte_characters,
doc: /* Default value of `enable-multibyte-characters' for buffers not overriding it.
-This is the same as (default-value 'enable-multibyte-characters). */);
+This is the same as (default-value \\='enable-multibyte-characters). */);
DEFVAR_BUFFER_DEFAULTS ("default-buffer-file-coding-system",
buffer_file_coding_system,
doc: /* Default value of `buffer-file-coding-system' for buffers not overriding it.
-This is the same as (default-value 'buffer-file-coding-system). */);
+This is the same as (default-value \\='buffer-file-coding-system). */);
DEFVAR_BUFFER_DEFAULTS ("default-truncate-lines",
truncate_lines,
doc: /* Default value of `truncate-lines' for buffers that do not override it.
-This is the same as (default-value 'truncate-lines). */);
+This is the same as (default-value \\='truncate-lines). */);
DEFVAR_BUFFER_DEFAULTS ("default-fill-column",
fill_column,
doc: /* Default value of `fill-column' for buffers that do not override it.
-This is the same as (default-value 'fill-column). */);
+This is the same as (default-value \\='fill-column). */);
DEFVAR_BUFFER_DEFAULTS ("default-left-margin",
left_margin,
doc: /* Default value of `left-margin' for buffers that do not override it.
-This is the same as (default-value 'left-margin). */);
+This is the same as (default-value \\='left-margin). */);
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). */);
+This is the same as (default-value \\='tab-width). */);
DEFVAR_BUFFER_DEFAULTS ("default-case-fold-search",
case_fold_search,
doc: /* Default value of `case-fold-search' for buffers that don't override it.
-This is the same as (default-value 'case-fold-search). */);
+This is the same as (default-value \\='case-fold-search). */);
DEFVAR_BUFFER_DEFAULTS ("default-left-margin-width",
left_margin_cols,
doc: /* Default value of `left-margin-width' for buffers that don't override it.
-This is the same as (default-value 'left-margin-width). */);
+This is the same as (default-value \\='left-margin-width). */);
DEFVAR_BUFFER_DEFAULTS ("default-right-margin-width",
right_margin_cols,
doc: /* Default value of `right-margin-width' for buffers that don't override it.
-This is the same as (default-value 'right-margin-width). */);
+This is the same as (default-value \\='right-margin-width). */);
DEFVAR_BUFFER_DEFAULTS ("default-left-fringe-width",
left_fringe_width,
doc: /* Default value of `left-fringe-width' for buffers that don't override it.
-This is the same as (default-value 'left-fringe-width). */);
+This is the same as (default-value \\='left-fringe-width). */);
DEFVAR_BUFFER_DEFAULTS ("default-right-fringe-width",
right_fringe_width,
doc: /* Default value of `right-fringe-width' for buffers that don't override it.
-This is the same as (default-value 'right-fringe-width). */);
+This is the same as (default-value \\='right-fringe-width). */);
DEFVAR_BUFFER_DEFAULTS ("default-fringes-outside-margins",
fringes_outside_margins,
doc: /* Default value of `fringes-outside-margins' for buffers that don't override it.
-This is the same as (default-value 'fringes-outside-margins). */);
+This is the same as (default-value \\='fringes-outside-margins). */);
DEFVAR_BUFFER_DEFAULTS ("default-scroll-bar-width",
scroll_bar_width,
doc: /* Default value of `scroll-bar-width' for buffers that don't override it.
-This is the same as (default-value 'scroll-bar-width). */);
+This is the same as (default-value \\='scroll-bar-width). */);
DEFVAR_BUFFER_DEFAULTS ("default-vertical-scroll-bar",
vertical_scroll_bar_type,
doc: /* Default value of `vertical-scroll-bar' for buffers that don't override it.
-This is the same as (default-value 'vertical-scroll-bar). */);
+This is the same as (default-value \\='vertical-scroll-bar). */);
DEFVAR_BUFFER_DEFAULTS ("default-indicate-empty-lines",
indicate_empty_lines,
doc: /* Default value of `indicate-empty-lines' for buffers that don't override it.
-This is the same as (default-value 'indicate-empty-lines). */);
+This is the same as (default-value \\='indicate-empty-lines). */);
DEFVAR_BUFFER_DEFAULTS ("default-indicate-buffer-boundaries",
indicate_buffer_boundaries,
doc: /* Default value of `indicate-buffer-boundaries' for buffers that don't override it.
-This is the same as (default-value 'indicate-buffer-boundaries). */);
+This is the same as (default-value \\='indicate-buffer-boundaries). */);
DEFVAR_BUFFER_DEFAULTS ("default-fringe-indicator-alist",
fringe_indicator_alist,
doc: /* Default value of `fringe-indicator-alist' for buffers that don't override it.
-This is the same as (default-value 'fringe-indicator-alist'). */);
+This is the same as (default-value \\='fringe-indicator-alist). */);
DEFVAR_BUFFER_DEFAULTS ("default-fringe-cursor-alist",
fringe_cursor_alist,
doc: /* Default value of `fringe-cursor-alist' for buffers that don't override it.
-This is the same as (default-value 'fringe-cursor-alist'). */);
+This is the same as (default-value \\='fringe-cursor-alist). */);
DEFVAR_BUFFER_DEFAULTS ("default-scroll-up-aggressively",
scroll_up_aggressively,
doc: /* Default value of `scroll-up-aggressively'.
This value applies in buffers that don't have their own local values.
-This is the same as (default-value 'scroll-up-aggressively). */);
+This is the same as (default-value \\='scroll-up-aggressively). */);
DEFVAR_BUFFER_DEFAULTS ("default-scroll-down-aggressively",
scroll_down_aggressively,
doc: /* Default value of `scroll-down-aggressively'.
This value applies in buffers that don't have their own local values.
-This is the same as (default-value 'scroll-down-aggressively). */);
+This is the same as (default-value \\='scroll-down-aggressively). */);
DEFVAR_PER_BUFFER ("header-line-format",
&BVAR (current_buffer, header_line_format),
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
-it is not marked as "special".
-
-When a mode is used by default, `find-file' switches to it before it
-reads the contents into the buffer and before it finishes setting up
-the buffer. Thus, the mode and its hooks should not expect certain
-variables such as `buffer-read-only' and `buffer-file-coding-system'
-to be set up. */);
+it is not marked as "special". */);
DEFVAR_PER_BUFFER ("mode-name", &BVAR (current_buffer, mode_name),
Qnil,
DEFVAR_PER_BUFFER ("default-directory", &BVAR (current_buffer, directory),
Qstringp,
- doc: /* Name of default directory of current buffer. Should end with slash.
+ doc: /* Name of default directory of current buffer.
To interactively change the default directory, use command `cd'. */);
DEFVAR_PER_BUFFER ("auto-fill-function", &BVAR (current_buffer, auto_fill_function),
DEFVAR_PER_BUFFER ("selective-display", &BVAR (current_buffer, selective_display),
Qnil,
doc: /* Non-nil enables selective display.
+
An integer N as value means display only lines
that start with less than N columns of space.
+
A value of t means that the character ^M makes itself and
all the rest of the line invisible; also, when saving the buffer
-in a file, save the ^M as a newline. */);
+in a file, save the ^M as a newline. This usage is obsolete; use
+overlays or text properties instead. */);
DEFVAR_PER_BUFFER ("selective-display-ellipses",
&BVAR (current_buffer, selective_display_ellipses),
doc: /* List of functions to call before each text change.
Two arguments are passed to each function: the positions of
the beginning and end of the range of old text to be changed.
-\(For an insertion, the beginning and end are at the same place.)
+(For an insertion, the beginning and end are at the same place.)
No information is given about the length of the text after the change.
Buffer changes made while executing the `before-change-functions'
Three arguments are passed to each function: the positions of
the beginning and end of the range of changed text,
and the length in chars of the pre-change text replaced by that range.
-\(For an insertion, the pre-change length is zero;
+(For an insertion, the pre-change length is zero;
for a deletion, that length is the number of chars deleted,
and the post-change beginning and end are at the same place.)
and VALUE is the old value.
An entry (apply FUN-NAME . ARGS) means undo the change with
-\(apply FUN-NAME ARGS).
+(apply FUN-NAME ARGS).
An entry (apply DELTA BEG END FUN-NAME . ARGS) supports selective undo
in the active region. BEG and END is the range affected by this entry
Lisp programs may give this variable certain special values:
-- A value of `lambda' enables Transient Mark mode temporarily.
- It is disabled again after any subsequent action that would
+- The symbol `lambda' enables Transient Mark mode temporarily.
+ The mode is disabled again after any subsequent action that would
normally deactivate the mark (e.g. buffer modification).
-- A value of (only . OLDVAL) enables Transient Mark mode
+- The pair (only . OLDVAL) enables Transient Mark mode
temporarily. After any subsequent point motion command that is
not shift-translated, or any other action that would normally
deactivate the mark (e.g. buffer modification), the value of
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).
+(a solid box becomes hollow, a bar becomes a narrower bar).
You can also specify the cursor type as in the `cursor-type' variable.
-Use Custom to set this variable and update the display." */);
+Use Custom to set this variable and update the display. */);
DEFVAR_LISP ("kill-buffer-query-functions", Vkill_buffer_query_functions,
doc: /* List of functions called with no args to query before killing a buffer.