/* 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.
GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
+the Free Software Foundation, either version 3 of the License, or (at
+your option) any later version.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
#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"
+#include "xwidget.h"
#ifdef WINDOWSNT
#include "w32heap.h" /* for mmap_* */
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
Buffers not visible in windows are preferred to visible buffers, unless
optional second argument VISIBLE-OK is non-nil. Ignore the argument
BUFFER unless it denotes a live buffer. If the optional third argument
-FRAME is non-nil, use that frame's buffer list instead of the selected
-frame's buffer list.
+FRAME specifies a live frame, then use that frame's buffer list instead
+of the selected frame's buffer list.
The buffer is found by scanning the selected or specified frame's buffer
list first, followed by the list of all buffers. If no other buffer
exists, return the buffer `*scratch*' (creating it if necessary). */)
(Lisp_Object buffer, Lisp_Object visible_ok, Lisp_Object frame)
{
- struct frame *f = decode_any_frame (frame);
+ struct frame *f = decode_live_frame (frame);
Lisp_Object tail = f->buffer_list, pred = f->buffer_predicate;
Lisp_Object buf, notsogood = Qnil;
(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);
- tem = do_yes_or_no_p (format2 ("Buffer %s modified; kill anyway? ",
- BVAR (b, name), make_number (0)));
- UNGCPRO;
+ AUTO_STRING (format, "Buffer %s modified; kill anyway? ");
+ tem = do_yes_or_no_p (CALLN (Fformat, format, BVAR (b, name)));
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;
+ kill_buffer_xwidgets (buffer);
/* Killing buffer processes may run sentinels which may have killed
our buffer. */
doc: /* Signal a `buffer-read-only' error if the current buffer is read-only.
If the text under POSITION (which defaults to point) has the
`inhibit-read-only' text property set, the error will not be raised. */)
- (Lisp_Object pos)
+ (Lisp_Object position)
{
- if (NILP (pos))
- XSETFASTINT (pos, PT);
+ if (NILP (position))
+ XSETFASTINT (position, PT);
else
- CHECK_NUMBER (pos);
+ CHECK_NUMBER (position);
if (!NILP (BVAR (current_buffer, read_only))
&& NILP (Vinhibit_read_only)
- && NILP (Fget_text_property (pos, Qinhibit_read_only, Qnil)))
+ && NILP (Fget_text_property (position, Qinhibit_read_only, Qnil)))
xsignal1 (Qbuffer_read_only, Fcurrent_buffer ());
return Qnil;
}
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);
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
pwd = get_current_dir_name ();
if (!pwd)
- fatal ("`get_current_dir_name' failed: %s\n", strerror (errno));
-
- /* Maybe this should really use some standard subroutine
- whose definition is filename syntax dependent. */
- len = strlen (pwd);
- if (!(IS_DIRECTORY_SEP (pwd[len - 1])))
{
- /* Grow buffer to add directory separator and '\0'. */
- 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++;
+ fprintf (stderr, "Error getting directory: %s\n",
+ emacs_strerror (errno));
+ bset_directory (current_buffer, Qnil);
}
-
- /* At this moment, we still don't know how to decode the directory
- name. So, we keep the bytes in unibyte form so that file I/O
- routines correctly get the original bytes. */
- bset_directory (current_buffer, make_unibyte_string (pwd, len));
-
- /* Add /: to the front of the name
- if it would otherwise be treated as magic. */
- temp = Ffind_file_name_handler (BVAR (current_buffer, directory), Qt);
- if (! NILP (temp)
- /* If the default dir is just /, TEMP is non-nil
- because of the ange-ftp completion handler.
- However, it is not necessary to turn / into /:/.
- So avoid doing that. */
- && strcmp ("/", SSDATA (BVAR (current_buffer, directory))))
+ else
{
- AUTO_STRING (slash_colon, "/:");
- bset_directory (current_buffer,
- concat2 (slash_colon,
- BVAR (current_buffer, directory)));
+ /* Maybe this should really use some standard subroutine
+ whose definition is filename syntax dependent. */
+ len = strlen (pwd);
+ if (!(IS_DIRECTORY_SEP (pwd[len - 1])))
+ {
+ /* Grow buffer to add directory separator and '\0'. */
+ pwd = realloc (pwd, len + 2);
+ if (!pwd)
+ fatal ("get_current_dir_name: %s\n", strerror (errno));
+ pwd[len] = DIRECTORY_SEP;
+ pwd[len + 1] = '\0';
+ len++;
+ }
+
+ /* At this moment, we still don't know how to decode the directory
+ name. So, we keep the bytes in unibyte form so that file I/O
+ routines correctly get the original bytes. */
+ bset_directory (current_buffer, make_unibyte_string (pwd, len));
+
+ /* Add /: to the front of the name
+ if it would otherwise be treated as magic. */
+ temp = Ffind_file_name_handler (BVAR (current_buffer, directory), Qt);
+ if (! NILP (temp)
+ /* If the default dir is just /, TEMP is non-nil
+ because of the ange-ftp completion handler.
+ However, it is not necessary to turn / into /:/.
+ So avoid doing that. */
+ && strcmp ("/", SSDATA (BVAR (current_buffer, directory))))
+ {
+ AUTO_STRING (slash_colon, "/:");
+ bset_directory (current_buffer,
+ concat2 (slash_colon,
+ BVAR (current_buffer, directory)));
+ }
}
temp = get_minibuffer (0);
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,
Any other value is treated as nil.
This variable has no effect unless the buffer's value of
-\`bidi-display-reordering' is non-nil. */);
+`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.
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),
location given by the integer. Undoing an entry of this form places
point at POSITION.
-Entries with value `nil' mark undo boundaries. The undo command treats
+Entries with value nil mark undo boundaries. The undo command treats
the changes between two undo boundaries as a single step to be undone.
If the value of the variable is t, undo information is not recorded. */);
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
(hbar . HEIGHT) display a horizontal bar cursor with height HEIGHT
ANYTHING ELSE display a hollow box cursor
+WIDTH and HEIGHT can't exceed the frame's canonical character size.
+
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'. */);
If t, displays a cursor related to the usual cursor type
\(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.