/* Header file for the buffer manipulation primitives.
- Copyright (C) 1985, 86, 93, 94, 95, 97, 1998, 1999, 2000, 01, 2003
- Free Software Foundation, Inc.
+ Copyright (C) 1985, 1986, 1993, 1994, 1995, 1997, 1998, 1999, 2000, 2001,
+ 2002, 2003, 2004, 2005, 2006, 2007 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 2, or (at your option)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
GNU Emacs is distributed in the hope that it will be useful,
You should have received a copy of the GNU General Public License
along with GNU Emacs; see the file COPYING. If not, write to
-the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
/* Accessing the parameters of the current buffer. */
/* Modification count. */
#define MODIFF (current_buffer->text->modiff)
+/* Character modification count. */
+#define CHARS_MODIFF (current_buffer->text->chars_modiff)
+
/* Overlay modification count. */
#define OVERLAY_MODIFF (current_buffer->text->overlay_modiff)
/* Modification count. */
#define BUF_MODIFF(buf) ((buf)->text->modiff)
+/* Character modification count. */
+#define BUF_CHARS_MODIFF(buf) ((buf)->text->chars_modiff)
+
/* Modification count as of last visit or save. */
#define BUF_SAVE_MODIFF(buf) ((buf)->text->save_modiff)
for this buffer. It is incremented for
each such event, and never otherwise
changed. */
+ int chars_modiff; /* This is modified with character change
+ events for this buffer. It is set to
+ modiff for each such event, and never
+ otherwise changed. */
int save_modiff; /* Previous value of modiff, as of last
time buffer visited or saved a file. */
Lisp_Object filename;
/* Dir for expanding relative file names. */
Lisp_Object directory;
- /* True iff this buffer has been backed up (if you write to the
+ /* True if this buffer has been backed up (if you write to the
visited file and it hasn't been backed up, then a backup will
be made). */
/* This isn't really used by the C code, so could be deleted. */
/* List of symbols naming the file format used for visited file. */
Lisp_Object file_format;
+ /* List of symbols naming the file format used for auto-save file. */
+ Lisp_Object auto_save_file_format;
+
/* True if the newline position cache and width run cache are
enabled. See search.c and indent.c. */
Lisp_Object cache_long_line_scans;
like vi). */
Lisp_Object indicate_empty_lines;
+ /* Non-nil means indicate buffer boundaries and scrolling. */
+ Lisp_Object indicate_buffer_boundaries;
+
+ /* Logical to physical fringe bitmap mappings. */
+ Lisp_Object fringe_indicator_alist;
+
+ /* Logical to physical cursor bitmap mappings. */
+ Lisp_Object fringe_cursor_alist;
+
/* Time stamp updated each time this buffer is displayed in a window. */
Lisp_Object display_time;
/* An integer > 0 means put that number of pixels below text lines
in the display of this buffer. */
Lisp_Object extra_line_spacing;
+
+ /* *Cursor type to display in non-selected windows.
+ t means to use hollow box cursor.
+ See `cursor-type' for other values. */
+ Lisp_Object cursor_in_non_selected_windows;
};
\f
extern void set_buffer_internal_1 P_ ((struct buffer *));
extern void set_buffer_temp P_ ((struct buffer *));
extern void record_buffer P_ ((Lisp_Object));
-extern void buffer_slot_type_mismatch P_ ((int));
+extern void buffer_slot_type_mismatch P_ ((int)) NO_RETURN;
extern void fix_overlays_before P_ ((struct buffer *, EMACS_INT, EMACS_INT));
extern void mmap_set_vars P_ ((int));
+/* Get overlays at POSN into array OVERLAYS with NOVERLAYS elements.
+ If NEXTP is non-NULL, return next overlay there.
+ See overlay_at arg CHANGE_REQ for meaning of CHRQ arg. */
+
+#define GET_OVERLAYS_AT(posn, overlays, noverlays, nextp, chrq) \
+ do { \
+ int maxlen = 40; \
+ overlays = (Lisp_Object *) alloca (maxlen * sizeof (Lisp_Object)); \
+ noverlays = overlays_at (posn, 0, &overlays, &maxlen, \
+ nextp, NULL, chrq); \
+ if (noverlays > maxlen) \
+ { \
+ maxlen = noverlays; \
+ overlays = (Lisp_Object *) alloca (maxlen * sizeof (Lisp_Object)); \
+ noverlays = overlays_at (posn, 0, &overlays, &maxlen, \
+ nextp, NULL, chrq); \
+ } \
+ } while (0)
+
EXFUN (Fbuffer_name, 1);
EXFUN (Fget_file_buffer, 1);
EXFUN (Fnext_overlay_change, 1);
EXFUN (Fdelete_overlay, 1);
EXFUN (Fbuffer_local_value, 2);
+EXFUN (Fgenerate_new_buffer_name, 2);
/* Functions to call before and after each text change. */
extern Lisp_Object Vbefore_change_functions;
(B)->local_flags[IDX] = (VAL); \
} while (0)
-/* Return the index of the per-buffer variable at offset OFFSET in the
- buffer structure. */
+/* Return the index value of the per-buffer variable at offset OFFSET
+ in the buffer structure.
+
+ If the slot OFFSET has a corresponding default value in
+ buffer_defaults, the index value is positive and has only one
+ nonzero bit. When a buffer has its own local value for a slot, the
+ bit for that slot (found in the same slot in this structure) is
+ turned on in the buffer's local_flags array.
+
+ If the index value is -1, even though there may be a
+ DEFVAR_PER_BUFFER for the slot, there is no default value for it;
+ and the corresponding slot in buffer_defaults is not used.
+
+ If the index value is -2, then there is no DEFVAR_PER_BUFFER for
+ the slot, but there is a default value which is copied into each
+ new buffer.
+
+ If a slot in this structure corresponding to a DEFVAR_PER_BUFFER is
+ zero, that is a bug */
+
#define PER_BUFFER_IDX(OFFSET) \
XINT (*(Lisp_Object *)((OFFSET) + (char *) &buffer_local_flags))