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