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comparison src/bufslots.h @ 0:376386a54a3c r19-14

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Import from CVS: tag r19-14
author cvs
date Mon, 13 Aug 2007 08:45:50 +0200
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1 /* Definitions of marked slots in buffers
2 Copyright (C) 1990, 1992, 1993 Free Software Foundation, Inc.
3
4 This file is part of XEmacs.
5
6 XEmacs is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
9 later version.
10
11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with XEmacs; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
20
21 /* Synched up with: Mule 2.0, FSF 19.30. Split out of buffer.h. */
22
23 /* Authorship:
24
25 FSF: long ago (part of buffer.h).
26 JWZ: separated out from buffer.h, early in Lemacs.
27 XEmacs: a few other changes.
28 */
29
30 /* In the declaration of the buffer structure, this file is included
31 after defining MARKED_SLOT(x) to be Lisp_Object x; i.e. just a slot
32 definition. In the garbage collector this file is included after
33 defining MARKED_SLOT(x) to be mark_object(buffer->x). */
34
35 /* The name of this buffer. */
36 MARKED_SLOT (name);
37
38 /* The name of the file visited in this buffer, or nil. */
39 MARKED_SLOT (filename);
40
41 /* Dir for expanding relative file names. */
42 MARKED_SLOT (directory);
43
44 /* True iff this buffer has been backed up (if you write to the
45 visited file and it hasn't been backed up, then a backup will
46 be made). */
47 /* #### This isn't really used by the C code, so could be deleted. */
48 MARKED_SLOT (backed_up);
49
50 /* Length of file when last read or saved.
51 This is not in the struct buffer_text
52 because it's not used in indirect buffers at all. */
53 MARKED_SLOT (save_length);
54
55 /* File name used for auto-saving this buffer.
56 This is not in the struct buffer_text
57 because it's not used in indirect buffers at all. */
58 MARKED_SLOT (auto_save_file_name);
59
60 /* Non-nil if buffer read-only. */
61 MARKED_SLOT (read_only);
62
63 /* "The mark". This is a marker which may
64 point into this buffer or may point nowhere. */
65 MARKED_SLOT (mark);
66
67 /* Alist of elements (SYMBOL . VALUE-IN-THIS-BUFFER)
68 for all per-buffer variables of this buffer.
69 Specifically, this lists those variables that have
70 a buffer-local value in this buffer: i.e. those
71 whose value does not shadow the default value.
72 (Remember that for any particlar variable created
73 with `make-local-variable' or `make-variable-buffer-local',
74 it will have a per-buffer value in some buffers and a
75 default value in others.)
76
77 Variables declared in C with DEFVAR_BUFFER_LOCAL() (i.e.
78 those stored in the struct buffer) are not listed here. */
79 MARKED_SLOT (local_var_alist);
80
81 /* Symbol naming major mode (eg, lisp-mode). */
82 MARKED_SLOT (major_mode);
83
84 /* Pretty name of major mode (eg, "Lisp"). */
85 MARKED_SLOT (mode_name);
86
87 /* Modeline element that controls format of modeline. */
88 MARKED_SLOT (modeline_format);
89
90 /* Keys that are bound local to this buffer. */
91 MARKED_SLOT (keymap);
92
93 /* This buffer's local abbrev table. */
94 MARKED_SLOT (abbrev_table);
95 /* This buffer's syntax table. */
96 MARKED_SLOT (syntax_table);
97
98 /* Values of several buffer-local variables.
99
100 tab-width is buffer-local so that redisplay can find it
101 in buffers that are not current */
102 MARKED_SLOT (case_fold_search);
103 MARKED_SLOT (tab_width);
104 MARKED_SLOT (fill_column);
105 MARKED_SLOT (left_margin);
106
107 /* Function to call when insert space past fill column. */
108 MARKED_SLOT (auto_fill_function);
109
110 /* nil: text, t: binary.
111 This value is meaningful only on certain operating systems. */
112 MARKED_SLOT (buffer_file_type);
113
114 /* Case table for case-conversion in this buffer.
115 This char-table maps each char into its lower-case version. */
116 MARKED_SLOT (downcase_table);
117 /* Char-table mapping each char to its upper-case version. */
118 MARKED_SLOT (upcase_table);
119
120 /* Char-table for conversion for case-folding search. */
121 MARKED_SLOT (case_canon_table);
122 /* Char-table of equivalences for case-folding search. */
123 MARKED_SLOT (case_eqv_table);
124
125 /* #### This ought to be a specifier: */
126 /* Non-nil means do not display continuation lines. */
127 MARKED_SLOT (truncate_lines);
128 /* #### This ought to be a specifier: */
129 /* #### Better yet, it ought to be junked. It really sucks. */
130 /* Non-nil means display ctl chars with uparrow. */
131 MARKED_SLOT (ctl_arrow);
132 /* #### This ought to be a specifier: */
133 /* #### Better yet, it ought to be junked. It really sucks. */
134 /* Non-nil means do selective display;
135 see doc string in syms_of_buffer (buffer.c) for details. */
136 MARKED_SLOT (selective_display);
137 /* #### This ought to be a specifier: */
138 /* #### Better yet, it ought to be junked. It really sucks. */
139 /* Non-nil means show ... at end of line followed by invisible lines. */
140 MARKED_SLOT (selective_display_ellipses);
141 /* Alist of (FUNCTION . STRING) for each minor mode enabled in buffer. */
142 /* Unused: MARKED_SLOT (minor_modes); */
143 /* t if "self-insertion" should overwrite */
144 MARKED_SLOT (overwrite_mode);
145 /* non-nil means abbrev mode is on. Expand abbrevs automatically. */
146 MARKED_SLOT (abbrev_mode);
147
148 /* No display table here. It's a specifier. */
149 #if 0 /* FSFmacs */
150 /* t means the mark and region are currently active. */
151 MARKED_SLOT (mark_active);
152 #endif
153
154 /* Changes in the buffer are recorded here for undo.
155 t means don't record anything.
156 This information belongs to the base buffer of an indirect buffer,
157 But we can't store it in the struct buffer_text
158 because local variables have to be right in the struct buffer.
159 So we copy it around in set_buffer_internal. */
160 MARKED_SLOT (undo_list);
161
162 /* FSFmacs has overlay stuff here. We have extent info elsewhere in the
163 struct buffer. */
164
165 /* If dedicated_frame is non-nil, display_buffer tries to use it instead
166 of the current frame */
167 MARKED_SLOT (dedicated_frame);
168
169 /* Lisp of symbols naming the file format used for visited file. */
170 MARKED_SLOT (file_format);
171
172 #ifdef REGION_CACHE_NEEDS_WORK
173 /* True if the newline position cache and width run cache are
174 enabled. See search.c and indent.c. */
175 MARKED_SLOT (cache_long_line_scans);
176
177 /* If the width run cache is enabled, this table contains the
178 character widths width_run_cache (see above) assumes. When we
179 do a thorough redisplay, we compare this against the buffer's
180 current display table to see whether the display table has
181 affected the widths of any characters. If it has, we
182 invalidate the width run cache, and re-initialize width_table. */
183 MARKED_SLOT (width_table);
184 #endif /* REGION_CACHE_NEEDS_WORK */
185
186 /* A redundant copy of text.pt, in the form of a marker. Every time one
187 is updated, so is the other.
188 */
189 MARKED_SLOT (point_marker);
190
191 /* FSFmacs has pt_marker, begv_marker, zv_marker here, used for
192 indirect buffers. We don't need them because we handle these
193 values directly instead of playing games with markers. */
194
195 /* This holds the point value before the last scroll operation.
196 Explicitly setting point sets this to nil. */
197 MARKED_SLOT (point_before_scroll);
198
199 /* Truename of the visited file (via the realpath() system call),
200 or nil. */
201 MARKED_SLOT (file_truename);
202
203 /* Invisibility spec of this buffer.
204 t => any non-nil `invisible' property means invisible.
205 A list => `invisible' property means invisible
206 if it is memq in that list. */
207 MARKED_SLOT (invisibility_spec);
208
209 /* The string generated by formatting the modeline in this buffer. */
210 MARKED_SLOT (generated_modeline_string);
211
212 /* A hash table that maps from a "generic extent" (an extent in
213 `modeline-format') into a buffer-specific extent. */
214 MARKED_SLOT (modeline_extent_table);
215 #if 0 /* FSFmacs */
216 /* This is silly and stupid */
217 /* These are so we don't have to recompile everything
218 the next few times we add a new slot. */
219 MARKED_SLOT (extra1, extra2, extra3);
220 #endif