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428
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1 /* Buffer manipulation primitives for XEmacs.
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2 Copyright (C) 1985-1989, 1992-1995 Free Software Foundation, Inc.
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3 Copyright (C) 1995 Sun Microsystems, Inc.
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4 Copyright (C) 1995, 1996 Ben Wing.
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5
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6 This file is part of XEmacs.
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7
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8 XEmacs is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 2, or (at your option) any
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11 later version.
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12
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13 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with XEmacs; see the file COPYING. If not, write to
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20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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21 Boston, MA 02111-1307, USA. */
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22
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23 /* Synched up with: Mule 2.0, FSF 19.30. */
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24
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25 /* Authorship:
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26
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27 FSF: long ago.
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28 JWZ: some changes for Lemacs, long ago. (e.g. separate buffer
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29 list per frame.)
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30 Mly: a few changes for buffer-local vars, 19.8 or 19.9.
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31 Ben Wing: some changes and cleanups for Mule, 19.12.
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32 */
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33
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34 /* This file contains functions that work with buffer objects.
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35 Functions that manipulate a buffer's text, however, are not
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36 in this file:
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37
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38 1) The low-level functions that actually know about the
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39 implementation of a buffer's text are located in insdel.c.
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40 2) The higher-level (mostly Lisp) functions that manipulate a
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41 buffer's text are in editfns.c.
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42 3) The highest-level Lisp commands are in cmds.c.
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43
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44 However:
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45
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46 -- Functions that know about syntax tables (forward-word,
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47 scan-sexps, etc.) are in syntax.c, as are functions
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48 that manipulate syntax tables.
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49 -- Functions that know about case tables (upcase, downcase,
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50 etc.) are in casefiddle.c. Functions that manipulate
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51 case tables (case-table-p, set-case-table, etc.) are
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52 in casetab.c.
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53 -- Functions that do searching and replacing are in
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54 search.c. The low-level functions that implement
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55 regular expressions are in regex.c.
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56
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57 Also:
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58
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59 -- Some file and process functions (in fileio.c and process.c)
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60 copy text from or insert text into a buffer; they call
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61 low-level functions in insdel.c to do this.
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62 -- insdel.c calls low-level functions in undo.c and extents.c
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63 to record buffer modifications for undoing and to handle
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64 extent adjustment and extent-data creation and insertion.
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65
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66 */
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67
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68 #include <config.h>
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69 #include "lisp.h"
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70
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71 #include "buffer.h"
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72 #include "chartab.h"
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73 #include "commands.h"
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74 #include "elhash.h"
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75 #include "extents.h"
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76 #include "faces.h"
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77 #include "frame.h"
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78 #include "insdel.h"
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79 #include "process.h" /* for kill_buffer_processes */
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80 #ifdef REGION_CACHE_NEEDS_WORK
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81 #include "region-cache.h"
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82 #endif
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83 #include "specifier.h"
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84 #include "syntax.h"
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85 #include "sysdep.h" /* for getwd */
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86 #include "window.h"
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87
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88 #include "sysfile.h"
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89
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90 struct buffer *current_buffer; /* the current buffer */
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91
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92 /* This structure holds the default values of the buffer-local variables
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93 defined with DEFVAR_BUFFER_LOCAL, that have special slots in each buffer.
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94 The default value occupies the same slot in this structure
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95 as an individual buffer's value occupies in that buffer.
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96 Setting the default value also goes through the alist of buffers
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97 and stores into each buffer that does not say it has a local value. */
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98 Lisp_Object Vbuffer_defaults;
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99 static void *buffer_defaults_saved_slots;
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100
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101 /* This structure marks which slots in a buffer have corresponding
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102 default values in Vbuffer_defaults.
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103 Each such slot has a nonzero value in this structure.
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104 The value has only one nonzero bit.
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105
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106 When a buffer has its own local value for a slot,
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107 the bit for that slot (found in the same slot in this structure)
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108 is turned on in the buffer's local_var_flags slot.
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109
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110 If a slot in this structure is 0, then there is a DEFVAR_BUFFER_LOCAL
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111 for the slot, but there is no default value for it; the corresponding
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112 slot in Vbuffer_defaults is not used except to initialize newly-created
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113 buffers.
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114
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115 If a slot is -1, then there is a DEFVAR_BUFFER_LOCAL for it
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116 as well as a default value which is used to initialize newly-created
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117 buffers and as a reset-value when local-vars are killed.
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118
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119 If a slot is -2, there is no DEFVAR_BUFFER_LOCAL for it.
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120 (The slot is always local, but there's no lisp variable for it.)
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121 The default value is only used to initialize newly-creation buffers.
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122
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123 If a slot is -3, then there is no DEFVAR_BUFFER_LOCAL for it but
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124 there is a default which is used to initialize newly-creation
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125 buffers and as a reset-value when local-vars are killed. */
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126 struct buffer buffer_local_flags;
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127
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128 /* This is the initial (startup) directory, as used for the *scratch* buffer.
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129 We're making this a global to make others aware of the startup directory.
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130 `initial_directory' is stored in external format.
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131 */
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132 char initial_directory[MAXPATHLEN+1];
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133
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134 /* This structure holds the names of symbols whose values may be
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135 buffer-local. It is indexed and accessed in the same way as the above. */
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136 static Lisp_Object Vbuffer_local_symbols;
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137 static void *buffer_local_symbols_saved_slots;
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138
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139 /* Alist of all buffer names vs the buffers. */
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140 /* This used to be a variable, but is no longer,
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141 to prevent lossage due to user rplac'ing this alist or its elements.
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142 Note that there is a per-frame copy of this as well; the frame slot
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143 and the global variable contain the same data, but possibly in different
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144 orders, so that the buffer ordering can be per-frame.
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145 */
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146 Lisp_Object Vbuffer_alist;
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147
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148 /* Functions to call before and after each text change. */
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149 Lisp_Object Qbefore_change_functions;
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150 Lisp_Object Qafter_change_functions;
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151 Lisp_Object Vbefore_change_functions;
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152 Lisp_Object Vafter_change_functions;
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153
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154 /* #### Obsolete, for compatibility */
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155 Lisp_Object Qbefore_change_function;
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156 Lisp_Object Qafter_change_function;
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157 Lisp_Object Vbefore_change_function;
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158 Lisp_Object Vafter_change_function;
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159
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160 #if 0 /* FSFmacs */
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161 Lisp_Object Vtransient_mark_mode;
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162 #endif
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163
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164 /* t means ignore all read-only text properties.
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165 A list means ignore such a property if its value is a member of the list.
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166 Any non-nil value means ignore buffer-read-only. */
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167 Lisp_Object Vinhibit_read_only;
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168
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169 /* List of functions to call that can query about killing a buffer.
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170 If any of these functions returns nil, we don't kill it. */
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171 Lisp_Object Vkill_buffer_query_functions;
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172
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173 /* Non-nil means delete a buffer's auto-save file when the buffer is saved. */
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174 int delete_auto_save_files;
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175
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176 Lisp_Object Qbuffer_live_p;
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177 Lisp_Object Qbuffer_or_string_p;
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178
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179 /* List of functions to call before changing an unmodified buffer. */
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180 Lisp_Object Vfirst_change_hook;
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181 Lisp_Object Qfirst_change_hook;
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182
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183 Lisp_Object Qfundamental_mode;
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184 Lisp_Object Qmode_class;
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185 Lisp_Object Qpermanent_local;
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186
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187 Lisp_Object Qprotected_field;
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188
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189 Lisp_Object QSFundamental; /* A string "Fundamental" */
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190 Lisp_Object QSscratch; /* "*scratch*" */
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191 Lisp_Object Qdefault_directory;
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192
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193 Lisp_Object Qkill_buffer_hook;
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194 Lisp_Object Qrecord_buffer_hook;
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195
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196 Lisp_Object Qrename_auto_save_file;
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197
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198 Lisp_Object Qget_file_buffer;
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199 Lisp_Object Qchange_major_mode_hook, Vchange_major_mode_hook;
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200
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201 Lisp_Object Qfind_file_compare_truenames;
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202
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203 Lisp_Object Qswitch_to_buffer;
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204
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205 /* Two thresholds controlling how much undo information to keep. */
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206 int undo_threshold;
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207 int undo_high_threshold;
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208
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|
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209 int find_file_compare_truenames;
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210 int find_file_use_truenames;
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211
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212
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213 static void reset_buffer_local_variables (struct buffer *, int first_time);
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214 static void nuke_all_buffer_slots (struct buffer *b, Lisp_Object zap);
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215
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216 Lisp_Object
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217 make_buffer (struct buffer *buf)
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218 {
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219 Lisp_Object obj;
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220 XSETBUFFER (obj, buf);
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221 return obj;
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222 }
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223
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224 static Lisp_Object
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225 mark_buffer (Lisp_Object obj)
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226 {
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227 struct buffer *buf = XBUFFER (obj);
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228
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229 /* Truncate undo information. */
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230 buf->undo_list = truncate_undo_list (buf->undo_list,
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231 undo_threshold,
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232 undo_high_threshold);
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233
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234 #define MARKED_SLOT(x) mark_object (buf->x)
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235 #include "bufslots.h"
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236 #undef MARKED_SLOT
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237
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|
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238 mark_object (buf->extent_info);
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239 if (buf->text)
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240 mark_object (buf->text->line_number_cache);
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241
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242 /* Don't mark normally through the children slot.
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243 (Actually, in this case, it doesn't matter.) */
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244 if (! EQ (buf->indirect_children, Qnull_pointer))
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245 mark_conses_in_list (buf->indirect_children);
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246
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247 return buf->base_buffer ? make_buffer (buf->base_buffer) : Qnil;
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248 }
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249
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250 static void
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251 print_buffer (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
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252 {
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253 struct buffer *b = XBUFFER (obj);
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254
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255 if (print_readably)
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256 {
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257 if (!BUFFER_LIVE_P (b))
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258 error ("printing unreadable object #<killed buffer>");
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259 else
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260 error ("printing unreadable object #<buffer %s>",
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261 XSTRING_DATA (b->name));
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|
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262 }
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263 else if (!BUFFER_LIVE_P (b))
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264 write_c_string ("#<killed buffer>", printcharfun);
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265 else if (escapeflag)
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|
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266 {
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|
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267 write_c_string ("#<buffer ", printcharfun);
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268 print_internal (b->name, printcharfun, 1);
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269 write_c_string (">", printcharfun);
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270 }
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271 else
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|
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272 {
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273 print_internal (b->name, printcharfun, 0);
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274 }
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275 }
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276
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277 /* We do not need a finalize method to handle a buffer's children list
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278 because all buffers have `kill-buffer' applied to them before
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279 they disappear, and the children removal happens then. */
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280 DEFINE_LRECORD_IMPLEMENTATION ("buffer", buffer,
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|
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281 mark_buffer, print_buffer, 0, 0, 0, 0,
|
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282 struct buffer);
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283
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|
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284 DEFUN ("bufferp", Fbufferp, 1, 1, 0, /*
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285 Return t if OBJECT is an editor buffer.
|
|
|
286 */
|
|
|
287 (object))
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|
|
288 {
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|
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289 return BUFFERP (object) ? Qt : Qnil;
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290 }
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291
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292 DEFUN ("buffer-live-p", Fbuffer_live_p, 1, 1, 0, /*
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293 Return t if OBJECT is an editor buffer that has not been deleted.
|
|
|
294 */
|
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295 (object))
|
|
|
296 {
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|
|
297 return BUFFERP (object) && BUFFER_LIVE_P (XBUFFER (object)) ? Qt : Qnil;
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|
|
298 }
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299
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300 static void
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301 nsberror (Lisp_Object spec)
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302 {
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|
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303 if (STRINGP (spec))
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304 error ("No buffer named %s", XSTRING_DATA (spec));
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305 signal_simple_error ("Invalid buffer argument", spec);
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|
306 }
|
|
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307
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308 DEFUN ("buffer-list", Fbuffer_list, 0, 1, 0, /*
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309 Return a list of all existing live buffers.
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|
310 The order is specific to the selected frame; if the optional FRAME
|
|
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311 argument is provided, the ordering for that frame is returned instead.
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|
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312 If the FRAME argument is t, then the global (non-frame) ordering is
|
|
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313 returned instead.
|
|
|
314 */
|
|
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315 (frame))
|
|
|
316 {
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|
|
317 return Fmapcar (Qcdr,
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|
|
318 EQ (frame, Qt) ? Vbuffer_alist :
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|
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319 decode_frame (frame)->buffer_alist);
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|
|
320 }
|
|
|
321
|
|
|
322 Lisp_Object
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323 get_buffer (Lisp_Object name, int error_if_deleted_or_does_not_exist)
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|
|
324 {
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|
|
325 if (BUFFERP (name))
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|
|
326 {
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|
|
327 if (!BUFFER_LIVE_P (XBUFFER (name)))
|
|
|
328 {
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|
|
329 if (error_if_deleted_or_does_not_exist)
|
|
|
330 nsberror (name);
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|
|
331 return Qnil;
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|
|
332 }
|
|
|
333 return name;
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|
|
334 }
|
|
|
335 else
|
|
|
336 {
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|
|
337 Lisp_Object buf;
|
|
|
338 struct gcpro gcpro1;
|
|
|
339
|
|
|
340 CHECK_STRING (name);
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|
|
341 name = LISP_GETTEXT (name); /* I18N3 */
|
|
|
342 GCPRO1 (name);
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|
|
343 buf = Fcdr (Fassoc (name, Vbuffer_alist));
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|
|
344 UNGCPRO;
|
|
|
345 if (NILP (buf) && error_if_deleted_or_does_not_exist)
|
|
|
346 nsberror (name);
|
|
|
347 return buf;
|
|
|
348 }
|
|
|
349 }
|
|
|
350
|
|
|
351 struct buffer *
|
|
|
352 decode_buffer (Lisp_Object buffer, int allow_string)
|
|
|
353 {
|
|
|
354 if (NILP (buffer))
|
|
|
355 return current_buffer;
|
|
|
356
|
|
|
357 if (allow_string && STRINGP (buffer))
|
|
|
358 return XBUFFER (get_buffer (buffer, 1));
|
|
|
359
|
|
|
360 CHECK_LIVE_BUFFER (buffer);
|
|
|
361 return XBUFFER (buffer);
|
|
|
362 }
|
|
|
363
|
|
|
364 DEFUN ("decode-buffer", Fdecode_buffer, 1, 1, 0, /*
|
|
|
365 Validate BUFFER or if BUFFER is nil, return the current buffer.
|
|
|
366 If BUFFER is a valid buffer or a string representing a valid buffer,
|
|
|
367 the corresponding buffer object will be returned. Otherwise an error
|
|
|
368 will be signaled.
|
|
|
369 */
|
|
|
370 (buffer))
|
|
|
371 {
|
|
|
372 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
373 XSETBUFFER (buffer, b);
|
|
|
374 return buffer;
|
|
|
375 }
|
|
|
376
|
|
|
377 #if 0 /* FSFmacs */
|
|
|
378 /* bleagh!!! */
|
|
|
379 /* Like Fassoc, but use Fstring_equal to compare
|
|
|
380 (which ignores text properties),
|
|
|
381 and don't ever QUIT. */
|
|
|
382
|
|
|
383 static Lisp_Object
|
|
|
384 assoc_ignore_text_properties (REGISTER Lisp_Object key, Lisp_Object list)
|
|
|
385 {
|
|
|
386 REGISTER Lisp_Object tail;
|
|
|
387 for (tail = list; !NILP (tail); tail = Fcdr (tail))
|
|
|
388 {
|
|
|
389 REGISTER Lisp_Object elt, tem;
|
|
|
390 elt = Fcar (tail);
|
|
|
391 tem = Fstring_equal (Fcar (elt), key);
|
|
|
392 if (!NILP (tem))
|
|
|
393 return elt;
|
|
|
394 }
|
|
|
395 return Qnil;
|
|
|
396 }
|
|
|
397
|
|
|
398 #endif /* FSFmacs */
|
|
|
399
|
|
|
400 DEFUN ("get-buffer", Fget_buffer, 1, 1, 0, /*
|
|
|
401 Return the buffer named NAME (a string).
|
|
|
402 If there is no live buffer named NAME, return nil.
|
|
|
403 NAME may also be a buffer; if so, the value is that buffer.
|
|
|
404 */
|
|
|
405 (name))
|
|
|
406 {
|
|
|
407 #ifdef I18N3
|
|
|
408 /* #### Doc string should indicate that the buffer name will get
|
|
|
409 translated. */
|
|
|
410 #endif
|
|
|
411
|
|
|
412 /* #### This might return a dead buffer. This is gross. This is
|
|
|
413 called FSF compatibility. */
|
|
|
414 if (BUFFERP (name))
|
|
|
415 return name;
|
|
|
416 return get_buffer (name, 0);
|
|
|
417 /* FSFmacs 19.29 calls assoc_ignore_text_properties() here.
|
|
|
418 Bleagh!! */
|
|
|
419 }
|
|
|
420
|
|
|
421
|
|
|
422 DEFUN ("get-file-buffer", Fget_file_buffer, 1, 1, 0, /*
|
|
|
423 Return the buffer visiting file FILENAME (a string).
|
|
|
424 The buffer's `buffer-file-name' must match exactly the expansion of FILENAME.
|
|
|
425 If there is no such live buffer, return nil.
|
|
|
426
|
|
|
427 Normally, the comparison is done by canonicalizing FILENAME (using
|
|
|
428 `expand-file-name') and comparing that to the value of `buffer-file-name'
|
|
|
429 for each existing buffer. However, If `find-file-compare-truenames' is
|
|
|
430 non-nil, FILENAME will be converted to its truename and the search will be
|
|
|
431 done on each buffer's value of `buffer-file-truename' instead of
|
|
|
432 `buffer-file-name'. Otherwise, if `find-file-use-truenames' is non-nil,
|
|
|
433 FILENAME will be converted to its truename and used for searching, but
|
|
|
434 the search will still be done on `buffer-file-name'.
|
|
|
435 */
|
|
|
436 (filename))
|
|
|
437 {
|
|
|
438 /* This function can GC. GC checked 1997.04.06. */
|
|
|
439 REGISTER Lisp_Object buf;
|
|
|
440 struct gcpro gcpro1;
|
|
|
441
|
|
|
442 #ifdef I18N3
|
|
|
443 /* DO NOT translate the filename. */
|
|
|
444 #endif
|
|
|
445 GCPRO1 (filename);
|
|
|
446 CHECK_STRING (filename);
|
|
|
447 filename = Fexpand_file_name (filename, Qnil);
|
|
|
448 {
|
|
|
449 /* If the file name has special constructs in it,
|
|
|
450 call the corresponding file handler. */
|
|
|
451 Lisp_Object handler = Ffind_file_name_handler (filename, Qget_file_buffer);
|
|
|
452 if (!NILP (handler))
|
|
|
453 {
|
|
|
454 UNGCPRO;
|
|
|
455 return call2 (handler, Qget_file_buffer, filename);
|
|
|
456 }
|
|
|
457 }
|
|
|
458 UNGCPRO;
|
|
|
459
|
|
|
460 if (find_file_compare_truenames || find_file_use_truenames)
|
|
|
461 {
|
|
|
462 struct gcpro ngcpro1, ngcpro2, ngcpro3;
|
|
|
463 Lisp_Object fn = Qnil;
|
|
|
464 Lisp_Object dn = Qnil;
|
|
|
465
|
|
|
466 NGCPRO3 (fn, dn, filename);
|
|
|
467 fn = Ffile_truename (filename, Qnil);
|
|
|
468 if (NILP (fn))
|
|
|
469 {
|
|
|
470 dn = Ffile_name_directory (filename);
|
|
|
471 fn = Ffile_truename (dn, Qnil);
|
|
|
472 if (! NILP (fn)) dn = fn;
|
|
|
473 fn = Fexpand_file_name (Ffile_name_nondirectory (filename),
|
|
|
474 dn);
|
|
|
475 }
|
|
|
476 filename = fn;
|
|
|
477 NUNGCPRO;
|
|
|
478 }
|
|
|
479
|
|
|
480 {
|
|
|
481 Lisp_Object elt;
|
|
|
482 LIST_LOOP_2 (elt, Vbuffer_alist)
|
|
|
483 {
|
|
|
484 buf = Fcdr (elt);
|
|
|
485 if (!BUFFERP (buf)) continue;
|
|
|
486 if (!STRINGP (XBUFFER (buf)->filename)) continue;
|
|
|
487 if (!NILP (Fstring_equal (filename,
|
|
|
488 (find_file_compare_truenames
|
|
|
489 ? XBUFFER (buf)->file_truename
|
|
|
490 : XBUFFER (buf)->filename))))
|
|
|
491 return buf;
|
|
|
492 }
|
|
|
493 }
|
|
|
494 return Qnil;
|
|
|
495 }
|
|
|
496
|
|
|
497
|
|
|
498 static void
|
|
|
499 push_buffer_alist (Lisp_Object name, Lisp_Object buf)
|
|
|
500 {
|
|
|
501 Lisp_Object cons = Fcons (name, buf);
|
|
|
502 Lisp_Object frmcons, devcons, concons;
|
|
|
503
|
|
|
504 Vbuffer_alist = nconc2 (Vbuffer_alist, Fcons (cons, Qnil));
|
|
|
505 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons)
|
|
|
506 {
|
|
|
507 struct frame *f;
|
|
|
508 f = XFRAME (XCAR (frmcons));
|
|
|
509 f->buffer_alist = nconc2 (f->buffer_alist, Fcons (cons, Qnil));
|
|
|
510 }
|
|
|
511 }
|
|
|
512
|
|
|
513 static void
|
|
|
514 delete_from_buffer_alist (Lisp_Object buf)
|
|
|
515 {
|
|
|
516 Lisp_Object cons = Frassq (buf, Vbuffer_alist);
|
|
|
517 Lisp_Object frmcons, devcons, concons;
|
|
|
518 if (NILP (cons))
|
|
|
519 return; /* abort() ? */
|
|
|
520 Vbuffer_alist = delq_no_quit (cons, Vbuffer_alist);
|
|
|
521
|
|
|
522 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons)
|
|
|
523 {
|
|
|
524 struct frame *f;
|
|
|
525 f = XFRAME (XCAR (frmcons));
|
|
|
526 f->buffer_alist = delq_no_quit (cons, f->buffer_alist);
|
|
|
527 }
|
|
|
528 }
|
|
|
529
|
|
|
530 Lisp_Object
|
|
|
531 get_truename_buffer (REGISTER Lisp_Object filename)
|
|
|
532 {
|
|
|
533 /* FSFmacs has its own code here and doesn't call get-file-buffer.
|
|
|
534 That's because their equivalent of find-file-compare-truenames
|
|
|
535 (find-file-existing-other-name) isn't looked at in get-file-buffer.
|
|
|
536 This way is more correct. */
|
|
|
537 int count = specpdl_depth ();
|
|
|
538
|
|
|
539 specbind (Qfind_file_compare_truenames, Qt);
|
|
|
540 return unbind_to (count, Fget_file_buffer (filename));
|
|
|
541 }
|
|
|
542
|
|
|
543 static struct buffer *
|
|
|
544 allocate_buffer (void)
|
|
|
545 {
|
|
|
546 struct buffer *b = alloc_lcrecord_type (struct buffer, &lrecord_buffer);
|
|
|
547
|
|
|
548 copy_lcrecord (b, XBUFFER (Vbuffer_defaults));
|
|
|
549
|
|
|
550 return b;
|
|
|
551 }
|
|
|
552
|
|
|
553 static Lisp_Object
|
|
|
554 finish_init_buffer (struct buffer *b, Lisp_Object name)
|
|
|
555 {
|
|
|
556 Lisp_Object buf;
|
|
|
557
|
|
|
558 XSETBUFFER (buf, b);
|
|
|
559
|
|
|
560 name = Fcopy_sequence (name);
|
|
|
561 /* #### This really does not need to be called. We already
|
|
|
562 initialized the buffer-local variables in allocate_buffer().
|
|
|
563 local_var_alist is set to Qnil at the same point, in
|
|
|
564 nuke_all_buffer_slots(). */
|
|
|
565 reset_buffer_local_variables (b, 1);
|
|
|
566 b->directory = ((current_buffer) ? current_buffer->directory : Qnil);
|
|
|
567
|
|
|
568 b->last_window_start = 1;
|
|
|
569
|
|
|
570 b->name = name;
|
|
|
571 if (string_byte (XSTRING (name), 0) != ' ')
|
|
|
572 b->undo_list = Qnil;
|
|
|
573 else
|
|
|
574 b->undo_list = Qt;
|
|
|
575
|
|
|
576 /* initialize the extent list */
|
|
|
577 init_buffer_extents (b);
|
|
|
578
|
|
|
579 /* Put this in the alist of all live buffers. */
|
|
|
580 push_buffer_alist (name, buf);
|
|
|
581
|
|
|
582 init_buffer_markers (b);
|
|
|
583
|
|
|
584 b->generated_modeline_string = Fmake_string (make_int (84), make_int (' '));
|
|
|
585 b->modeline_extent_table = make_lisp_hash_table (20, HASH_TABLE_KEY_WEAK,
|
|
|
586 HASH_TABLE_EQ);
|
|
|
587
|
|
|
588 return buf;
|
|
|
589 }
|
|
|
590
|
|
|
591 DEFUN ("get-buffer-create", Fget_buffer_create, 1, 1, 0, /*
|
|
|
592 Return the buffer named NAME, or create such a buffer and return it.
|
|
|
593 A new buffer is created if there is no live buffer named NAME.
|
|
|
594 If NAME starts with a space, the new buffer does not keep undo information.
|
|
|
595 If NAME is a buffer instead of a string, then it is the value returned.
|
|
|
596 The value is never nil.
|
|
|
597 */
|
|
|
598 (name))
|
|
|
599 {
|
|
|
600 /* This function can GC */
|
|
|
601 Lisp_Object buf;
|
|
|
602 REGISTER struct buffer *b;
|
|
|
603
|
|
|
604 #ifdef I18N3
|
|
|
605 /* #### Doc string should indicate that the buffer name will get
|
|
|
606 translated. */
|
|
|
607 #endif
|
|
|
608
|
|
|
609 name = LISP_GETTEXT (name);
|
|
|
610 buf = Fget_buffer (name);
|
|
|
611 if (!NILP (buf))
|
|
|
612 return buf;
|
|
|
613
|
|
|
614 if (XSTRING_LENGTH (name) == 0)
|
|
|
615 error ("Empty string for buffer name is not allowed");
|
|
|
616
|
|
|
617 b = allocate_buffer ();
|
|
|
618
|
|
|
619 b->text = &b->own_text;
|
|
|
620 b->base_buffer = 0;
|
|
|
621 b->indirect_children = Qnil;
|
|
|
622 init_buffer_text (b);
|
|
|
623
|
|
|
624 return finish_init_buffer (b, name);
|
|
|
625 }
|
|
|
626
|
|
|
627 DEFUN ("make-indirect-buffer", Fmake_indirect_buffer, 2, 2,
|
|
|
628 "bMake indirect buffer (to buffer): \nBName of indirect buffer: ", /*
|
|
|
629 Create and return an indirect buffer for buffer BASE, named NAME.
|
|
|
630 BASE should be an existing buffer (or buffer name).
|
|
|
631 NAME should be a string which is not the name of an existing buffer.
|
|
|
632 If BASE is an indirect buffer itself, the base buffer for that buffer
|
|
|
633 is made the base buffer for the newly created buffer. (Thus, there will
|
|
|
634 never be indirect buffers whose base buffers are themselves indirect.)
|
|
|
635 */
|
|
|
636 (base_buffer, name))
|
|
|
637 {
|
|
|
638 /* This function can GC */
|
|
|
639
|
|
|
640 /* #### The above interactive specification is totally bogus,
|
|
|
641 because it offers an existing buffer as default answer to the
|
|
|
642 second question. However, the second argument may not BE an
|
|
|
643 existing buffer! */
|
|
|
644 struct buffer *b;
|
|
|
645
|
|
|
646 base_buffer = get_buffer (base_buffer, 1);
|
|
|
647
|
|
|
648 #ifdef I18N3
|
|
|
649 /* #### Doc string should indicate that the buffer name will get
|
|
|
650 translated. */
|
|
|
651 #endif
|
|
|
652 CHECK_STRING (name);
|
|
|
653 name = LISP_GETTEXT (name);
|
|
|
654 if (!NILP (Fget_buffer (name)))
|
|
|
655 signal_simple_error ("Buffer name already in use", name);
|
|
|
656 if (XSTRING_LENGTH (name) == 0)
|
|
|
657 error ("Empty string for buffer name is not allowed");
|
|
|
658
|
|
|
659 b = allocate_buffer ();
|
|
|
660
|
|
|
661 b->base_buffer = BUFFER_BASE_BUFFER (XBUFFER (base_buffer));
|
|
|
662
|
|
|
663 /* Use the base buffer's text object. */
|
|
|
664 b->text = b->base_buffer->text;
|
|
|
665 b->indirect_children = Qnil;
|
|
|
666 b->base_buffer->indirect_children =
|
|
|
667 Fcons (make_buffer (b), b->base_buffer->indirect_children);
|
|
|
668 init_buffer_text (b);
|
|
|
669
|
|
|
670 return finish_init_buffer (b, name);
|
|
|
671 }
|
|
|
672
|
|
|
673
|
|
|
674
|
|
|
675 static void
|
|
|
676 reset_buffer_local_variables (struct buffer *b, int first_time)
|
|
|
677 {
|
|
|
678 struct buffer *def = XBUFFER (Vbuffer_defaults);
|
|
|
679
|
|
|
680 b->local_var_flags = 0;
|
|
|
681 /* For each slot that has a default value,
|
|
|
682 copy that into the slot. */
|
|
|
683 #define MARKED_SLOT(slot) \
|
|
|
684 { int mask = XINT (buffer_local_flags.slot); \
|
|
|
685 if ((mask > 0 || mask == -1 || mask == -3) \
|
|
|
686 && (first_time \
|
|
|
687 || NILP (Fget (XBUFFER (Vbuffer_local_symbols)->slot, \
|
|
|
688 Qpermanent_local, Qnil)))) \
|
|
|
689 b->slot = def->slot; \
|
|
|
690 }
|
|
|
691 #include "bufslots.h"
|
|
|
692 #undef MARKED_SLOT
|
|
|
693 #if 0
|
|
|
694 #define STRING256_P(obj) \
|
|
|
695 (STRINGP (obj) && XSTRING_CHAR_LENGTH (obj) == 256)
|
|
|
696 /* If the standard case table has been altered and invalidated,
|
|
|
697 fix up its insides first. */
|
|
|
698 if (!(STRING256_P(Vascii_upcase_table) &&
|
|
|
699 STRING256_P(Vascii_canon_table) &&
|
|
|
700 STRING256_P(Vascii_eqv_table)))
|
|
|
701 {
|
|
|
702 Fset_standard_case_table (Vascii_downcase_table);
|
|
|
703 }
|
|
|
704 b->downcase_table = Vascii_downcase_table;
|
|
|
705 b->upcase_table = Vascii_upcase_table;
|
|
|
706 b->case_canon_table = Vascii_canon_table;
|
|
|
707 b->case_eqv_table = Vascii_eqv_table;
|
|
|
708 #ifdef MULE
|
|
|
709 b->mirror_downcase_table = Vmirror_ascii_downcase_table;
|
|
|
710 b->mirror_upcase_table = Vmirror_ascii_upcase_table;
|
|
|
711 b->mirror_case_canon_table = Vmirror_ascii_canon_table;
|
|
|
712 b->mirror_case_eqv_table = Vmirror_ascii_eqv_table;
|
|
|
713 #endif
|
|
|
714 #endif
|
|
|
715 }
|
|
|
716
|
|
|
717
|
|
|
718 /* We split this away from generate-new-buffer, because rename-buffer
|
|
|
719 and set-visited-file-name ought to be able to use this to really
|
|
|
720 rename the buffer properly. */
|
|
|
721
|
|
|
722 DEFUN ("generate-new-buffer-name", Fgenerate_new_buffer_name, 1, 2, 0, /*
|
|
|
723 Return a string that is the name of no existing buffer based on NAME.
|
|
|
724 If there is no live buffer named NAME, then return NAME.
|
|
|
725 Otherwise modify name by appending `<NUMBER>', incrementing NUMBER
|
|
|
726 until an unused name is found, and then return that name.
|
|
|
727 Optional second argument IGNORE specifies a name that is okay to use
|
|
|
728 \(if it is in the sequence to be tried)
|
|
|
729 even if a buffer with that name exists.
|
|
|
730 */
|
|
|
731 (name, ignore))
|
|
|
732 {
|
|
|
733 REGISTER Lisp_Object gentemp, tem;
|
|
|
734 int count;
|
|
|
735 char number[10];
|
|
|
736
|
|
|
737 CHECK_STRING (name);
|
|
|
738
|
|
|
739 name = LISP_GETTEXT (name);
|
|
|
740 #ifdef I18N3
|
|
|
741 /* #### Doc string should indicate that the buffer name will get
|
|
|
742 translated. */
|
|
|
743 #endif
|
|
|
744
|
|
|
745 tem = Fget_buffer (name);
|
|
|
746 if (NILP (tem))
|
|
|
747 return name;
|
|
|
748
|
|
|
749 count = 1;
|
|
|
750 while (1)
|
|
|
751 {
|
|
|
752 sprintf (number, "<%d>", ++count);
|
|
|
753 gentemp = concat2 (name, build_string (number));
|
|
|
754 if (!NILP (ignore))
|
|
|
755 {
|
|
|
756 tem = Fstring_equal (gentemp, ignore);
|
|
|
757 if (!NILP (tem))
|
|
|
758 return gentemp;
|
|
|
759 }
|
|
|
760 tem = Fget_buffer (gentemp);
|
|
|
761 if (NILP (tem))
|
|
|
762 return gentemp;
|
|
|
763 }
|
|
|
764 }
|
|
|
765
|
|
|
766
|
|
|
767 DEFUN ("buffer-name", Fbuffer_name, 0, 1, 0, /*
|
|
|
768 Return the name of BUFFER, as a string.
|
|
|
769 With no argument or nil as argument, return the name of the current buffer.
|
|
|
770 */
|
|
|
771 (buffer))
|
|
|
772 {
|
|
|
773 /* For compatibility, we allow a dead buffer here.
|
|
|
774 Earlier versions of Emacs didn't provide buffer-live-p. */
|
|
|
775 if (NILP (buffer))
|
|
|
776 return current_buffer->name;
|
|
|
777 CHECK_BUFFER (buffer);
|
|
|
778 return XBUFFER (buffer)->name;
|
|
|
779 }
|
|
|
780
|
|
|
781 DEFUN ("buffer-file-name", Fbuffer_file_name, 0, 1, 0, /*
|
|
|
782 Return name of file BUFFER is visiting, or nil if none.
|
|
|
783 No argument or nil as argument means use the current buffer.
|
|
|
784 */
|
|
|
785 (buffer))
|
|
|
786 {
|
|
|
787 /* For compatibility, we allow a dead buffer here. Yuck! */
|
|
|
788 if (NILP (buffer))
|
|
|
789 return current_buffer->filename;
|
|
|
790 CHECK_BUFFER (buffer);
|
|
|
791 return XBUFFER (buffer)->filename;
|
|
|
792 }
|
|
|
793
|
|
|
794 DEFUN ("buffer-base-buffer", Fbuffer_base_buffer, 0, 1, 0, /*
|
|
|
795 Return the base buffer of indirect buffer BUFFER.
|
|
|
796 If BUFFER is not indirect, return nil.
|
|
|
797 */
|
|
|
798 (buffer))
|
|
|
799 {
|
|
|
800 struct buffer *buf = decode_buffer (buffer, 0);
|
|
|
801
|
|
|
802 return buf->base_buffer ? make_buffer (buf->base_buffer) : Qnil;
|
|
|
803 }
|
|
|
804
|
|
|
805 DEFUN ("buffer-indirect-children", Fbuffer_indirect_children, 0, 1, 0, /*
|
|
|
806 Return a list of all indirect buffers whose base buffer is BUFFER.
|
|
|
807 If BUFFER is indirect, the return value will always be nil; see
|
|
|
808 `make-indirect-buffer'.
|
|
|
809 */
|
|
|
810 (buffer))
|
|
|
811 {
|
|
|
812 struct buffer *buf = decode_buffer (buffer, 0);
|
|
|
813
|
|
|
814 return Fcopy_sequence (buf->indirect_children);
|
|
|
815 }
|
|
|
816
|
|
|
817 DEFUN ("buffer-local-variables", Fbuffer_local_variables, 0, 1, 0, /*
|
|
|
818 Return an alist of variables that are buffer-local in BUFFER.
|
|
|
819 Most elements look like (SYMBOL . VALUE), describing one variable.
|
|
|
820 For a symbol that is locally unbound, just the symbol appears in the value.
|
|
|
821 Note that storing new VALUEs in these elements doesn't change the variables.
|
|
|
822 No argument or nil as argument means use current buffer as BUFFER.
|
|
|
823 */
|
|
|
824 (buffer))
|
|
|
825 {
|
|
|
826 struct buffer *buf = decode_buffer (buffer, 0);
|
|
|
827 Lisp_Object result = Qnil;
|
|
|
828
|
|
|
829 {
|
|
|
830 Lisp_Object tail;
|
|
|
831 for (tail = buf->local_var_alist; CONSP (tail); tail = XCDR (tail))
|
|
|
832 {
|
|
|
833 Lisp_Object elt = XCAR (tail);
|
|
|
834 /* Reference each variable in the alist in buf.
|
|
|
835 If inquiring about the current buffer, this gets the current values,
|
|
|
836 so store them into the alist so the alist is up to date.
|
|
|
837 If inquiring about some other buffer, this swaps out any values
|
|
|
838 for that buffer, making the alist up to date automatically. */
|
|
|
839 Lisp_Object val = find_symbol_value (XCAR (elt));
|
|
|
840 /* Use the current buffer value only if buf is the current buffer. */
|
|
|
841 if (buf != current_buffer)
|
|
|
842 val = XCDR (elt);
|
|
|
843
|
|
|
844 /* If symbol is unbound, put just the symbol in the list. */
|
|
|
845 if (UNBOUNDP (val))
|
|
|
846 result = Fcons (XCAR (elt), result);
|
|
|
847 /* Otherwise, put (symbol . value) in the list. */
|
|
|
848 else
|
|
|
849 result = Fcons (Fcons (XCAR (elt), val), result);
|
|
|
850 }
|
|
|
851 }
|
|
|
852
|
|
|
853 /* Add on all the variables stored in special slots. */
|
|
|
854 {
|
|
|
855 struct buffer *syms = XBUFFER (Vbuffer_local_symbols);
|
|
|
856 #define MARKED_SLOT(slot) \
|
|
|
857 { int mask = XINT (buffer_local_flags.slot); \
|
|
|
858 if (mask == 0 || mask == -1 \
|
|
|
859 || ((mask > 0) && (buf->local_var_flags & mask))) \
|
|
|
860 result = Fcons (Fcons (syms->slot, buf->slot), result); \
|
|
|
861 }
|
|
|
862 #include "bufslots.h"
|
|
|
863 #undef MARKED_SLOT
|
|
|
864 }
|
|
|
865 return result;
|
|
|
866 }
|
|
|
867
|
|
|
868 DEFUN ("buffer-dedicated-frame", Fbuffer_dedicated_frame, 0, 1, 0, /*
|
|
|
869 Return the frame dedicated to this BUFFER, or nil if there is none.
|
|
|
870 No argument or nil as argument means use current buffer as BUFFER.
|
|
|
871 */
|
|
|
872 (buffer))
|
|
|
873 {
|
|
|
874 struct buffer *buf = decode_buffer (buffer, 0);
|
|
|
875
|
|
|
876 /* XEmacs addition: if the frame is dead, silently make it go away. */
|
|
|
877 if (!NILP (buf->dedicated_frame) &&
|
|
|
878 !FRAME_LIVE_P (XFRAME (buf->dedicated_frame)))
|
|
|
879 buf->dedicated_frame = Qnil;
|
|
|
880
|
|
|
881 return buf->dedicated_frame;
|
|
|
882 }
|
|
|
883
|
|
|
884 DEFUN ("set-buffer-dedicated-frame", Fset_buffer_dedicated_frame, 2, 2, 0, /*
|
|
|
885 For this BUFFER, set the FRAME dedicated to it.
|
|
|
886 FRAME must be a frame or nil.
|
|
|
887 */
|
|
|
888 (buffer, frame))
|
|
|
889 {
|
|
|
890 struct buffer *buf = decode_buffer (buffer, 0);
|
|
|
891
|
|
|
892 if (!NILP (frame))
|
|
|
893 CHECK_LIVE_FRAME (frame); /* XEmacs change */
|
|
|
894
|
|
|
895 return buf->dedicated_frame = frame;
|
|
|
896 }
|
|
|
897
|
|
|
898
|
|
|
899
|
|
|
900 DEFUN ("buffer-modified-p", Fbuffer_modified_p, 0, 1, 0, /*
|
|
|
901 Return t if BUFFER was modified since its file was last read or saved.
|
|
|
902 No argument or nil as argument means use current buffer as BUFFER.
|
|
|
903 */
|
|
|
904 (buffer))
|
|
|
905 {
|
|
|
906 struct buffer *buf = decode_buffer (buffer, 0);
|
|
|
907
|
|
|
908 return BUF_SAVE_MODIFF (buf) < BUF_MODIFF (buf) ? Qt : Qnil;
|
|
|
909 }
|
|
|
910
|
|
|
911 DEFUN ("set-buffer-modified-p", Fset_buffer_modified_p, 1, 2, 0, /*
|
|
|
912 Mark BUFFER as modified or unmodified according to FLAG.
|
|
|
913 A non-nil FLAG means mark the buffer modified. No argument or nil
|
|
|
914 as BUFFER means use current buffer.
|
|
|
915 */
|
|
|
916 (flag, buffer))
|
|
|
917 {
|
|
|
918 /* This function can GC */
|
|
|
919 struct buffer *buf = decode_buffer (buffer, 0);
|
|
|
920
|
|
|
921 #ifdef CLASH_DETECTION
|
|
|
922 /* If buffer becoming modified, lock the file.
|
|
|
923 If buffer becoming unmodified, unlock the file. */
|
|
|
924
|
|
|
925 Lisp_Object fn = buf->file_truename;
|
|
|
926 if (!NILP (fn))
|
|
|
927 {
|
|
|
928 int already = BUF_SAVE_MODIFF (buf) < BUF_MODIFF (buf);
|
|
|
929 if (already == NILP (flag))
|
|
|
930 {
|
|
|
931 int count = specpdl_depth ();
|
|
|
932 /* lock_file() and unlock_file() currently use current_buffer */
|
|
|
933 /* #### - dmoore, what if lock_file or unlock_file kill
|
|
|
934 the current buffer? */
|
|
|
935 record_unwind_protect (Fset_buffer, Fcurrent_buffer ());
|
|
|
936 set_buffer_internal (buf);
|
|
|
937 if (!already && !NILP (flag))
|
|
|
938 lock_file (fn);
|
|
|
939 else if (already && NILP (flag))
|
|
|
940 unlock_file (fn);
|
|
|
941 unbind_to (count, Qnil);
|
|
|
942 }
|
|
|
943 }
|
|
|
944 #endif /* CLASH_DETECTION */
|
|
|
945
|
|
|
946 /* This is often called when the buffer contents are altered but we
|
|
|
947 don't want to treat the changes that way (e.g. selective
|
|
|
948 display). We still need to make sure redisplay realizes that the
|
|
|
949 contents have potentially altered and it needs to do some
|
|
|
950 work. */
|
|
|
951 buf = decode_buffer(buffer, 0);
|
|
|
952 BUF_MODIFF (buf)++;
|
|
|
953 BUF_SAVE_MODIFF (buf) = NILP (flag) ? BUF_MODIFF (buf) : 0;
|
|
|
954 MARK_MODELINE_CHANGED;
|
|
|
955
|
|
|
956 return flag;
|
|
|
957 }
|
|
|
958
|
|
|
959 DEFUN ("buffer-modified-tick", Fbuffer_modified_tick, 0, 1, 0, /*
|
|
|
960 Return BUFFER's tick counter, incremented for each change in text.
|
|
|
961 Each buffer has a tick counter which is incremented each time the text in
|
|
|
962 that buffer is changed. It wraps around occasionally.
|
|
|
963 No argument or nil as argument means use current buffer as BUFFER.
|
|
|
964 */
|
|
|
965 (buffer))
|
|
|
966 {
|
|
|
967 struct buffer *buf = decode_buffer (buffer, 0);
|
|
|
968
|
|
|
969 return make_int (BUF_MODIFF (buf));
|
|
|
970 }
|
|
|
971
|
|
|
972 DEFUN ("rename-buffer", Frename_buffer, 1, 2,
|
|
|
973 "sRename buffer (to new name): \nP", /*
|
|
|
974 Change current buffer's name to NEWNAME (a string).
|
|
|
975 If second arg UNIQUE is nil or omitted, it is an error if a
|
|
|
976 buffer named NEWNAME already exists.
|
|
|
977 If UNIQUE is non-nil, come up with a new name using
|
|
|
978 `generate-new-buffer-name'.
|
|
|
979 Interactively, one can set UNIQUE with a prefix argument.
|
|
|
980 Returns the name we actually gave the buffer.
|
|
|
981 This does not change the name of the visited file (if any).
|
|
|
982 */
|
|
|
983 (newname, unique))
|
|
|
984 {
|
|
|
985 /* This function can GC */
|
|
|
986 Lisp_Object tem, buf;
|
|
|
987
|
|
|
988 #ifdef I18N3
|
|
|
989 /* #### Doc string should indicate that the buffer name will get
|
|
|
990 translated. */
|
|
|
991 #endif
|
|
|
992 CHECK_STRING (newname);
|
|
|
993 newname = LISP_GETTEXT (newname);
|
|
|
994
|
|
|
995 if (XSTRING_LENGTH (newname) == 0)
|
|
|
996 error ("Empty string is invalid as a buffer name");
|
|
|
997
|
|
|
998 tem = Fget_buffer (newname);
|
|
|
999 /* Don't short-circuit if UNIQUE is t. That is a useful way to rename
|
|
|
1000 the buffer automatically so you can create another with the original name.
|
|
|
1001 It makes UNIQUE equivalent to
|
|
|
1002 (rename-buffer (generate-new-buffer-name NEWNAME)). */
|
|
|
1003 /* XEmacs change: added check for nil */
|
|
|
1004 if (NILP (unique) && !NILP (tem) && XBUFFER (tem) == current_buffer)
|
|
|
1005 return current_buffer->name;
|
|
|
1006 if (!NILP (tem))
|
|
|
1007 {
|
|
|
1008 if (!NILP (unique))
|
|
|
1009 newname = Fgenerate_new_buffer_name (newname, current_buffer->name);
|
|
|
1010 else
|
|
|
1011 error ("Buffer name \"%s\" is in use",
|
|
|
1012 XSTRING_DATA (newname));
|
|
|
1013 }
|
|
|
1014
|
|
|
1015 current_buffer->name = newname;
|
|
|
1016
|
|
|
1017 /* Catch redisplay's attention. Unless we do this, the modelines for
|
|
|
1018 any windows displaying current_buffer will stay unchanged. */
|
|
|
1019 MARK_MODELINE_CHANGED;
|
|
|
1020
|
|
|
1021 buf = Fcurrent_buffer ();
|
|
|
1022
|
|
|
1023 /* The aconses in the Vbuffer_alist are shared with frame->buffer_alist,
|
|
|
1024 so this will change it in the per-frame ordering as well. */
|
|
|
1025 Fsetcar (Frassq (buf, Vbuffer_alist), newname);
|
|
|
1026 if (NILP (current_buffer->filename)
|
|
|
1027 && !NILP (current_buffer->auto_save_file_name))
|
|
|
1028 call0 (Qrename_auto_save_file);
|
|
|
1029 /* refetch since that last call may have done GC */
|
|
|
1030 /* (hypothetical relocating GC) */
|
|
|
1031 return current_buffer->name;
|
|
|
1032 }
|
|
|
1033
|
|
|
1034 DEFUN ("other-buffer", Fother_buffer, 0, 3, 0, /*
|
|
|
1035 Return most recently selected buffer other than BUFFER.
|
|
|
1036 Buffers not visible in windows are preferred to visible buffers,
|
|
|
1037 unless optional third argument VISIBLE-OK is non-nil.
|
|
|
1038 If no other buffer exists, the buffer `*scratch*' is returned.
|
|
|
1039 If BUFFER is omitted or nil, some interesting buffer is returned.
|
|
|
1040
|
|
|
1041 The ordering is for this frame; If second optional argument FRAME
|
|
|
1042 is provided, then the ordering is for that frame. If the second arg
|
|
|
1043 is t, then the global ordering is returned.
|
|
|
1044
|
|
|
1045 Note: In FSF Emacs, this function takes two arguments: BUFFER and
|
|
|
1046 VISIBLE-OK.
|
|
|
1047 */
|
|
|
1048 (buffer, frame, visible_ok))
|
|
|
1049 {
|
|
|
1050 /* This function can GC */
|
|
|
1051 Lisp_Object tail, buf, notsogood, tem;
|
|
|
1052 Lisp_Object alist;
|
|
|
1053
|
|
|
1054 notsogood = Qnil;
|
|
|
1055
|
|
|
1056 if (EQ (frame, Qt))
|
|
|
1057 alist = Vbuffer_alist;
|
|
|
1058 else
|
|
|
1059 {
|
|
|
1060 struct frame *f = decode_frame (frame);
|
|
|
1061
|
|
|
1062 XSETFRAME (frame, f);
|
|
|
1063 alist = f->buffer_alist;
|
|
|
1064 }
|
|
|
1065
|
|
|
1066 for (tail = alist; !NILP (tail); tail = Fcdr (tail))
|
|
|
1067 {
|
|
|
1068 buf = Fcdr (Fcar (tail));
|
|
|
1069 if (EQ (buf, buffer))
|
|
|
1070 continue;
|
|
|
1071 if (string_byte (XSTRING (XBUFFER (buf)->name), 0) == ' ')
|
|
|
1072 continue;
|
|
|
1073 /* If FRAME has a buffer_predicate,
|
|
|
1074 disregard buffers that don't fit the predicate. */
|
|
|
1075 if (FRAMEP (frame))
|
|
|
1076 {
|
|
|
1077 tem = XFRAME (frame)->buffer_predicate;
|
|
|
1078 if (!NILP (tem))
|
|
|
1079 {
|
|
|
1080 tem = call1 (tem, buf);
|
|
|
1081 if (NILP (tem))
|
|
|
1082 continue;
|
|
|
1083 }
|
|
|
1084 }
|
|
|
1085
|
|
|
1086 if (NILP (visible_ok))
|
|
|
1087 {
|
|
|
1088 /* get-buffer-window will handle nil or t frame */
|
|
|
1089 tem = Fget_buffer_window (buf, frame, Qnil);
|
|
|
1090 }
|
|
|
1091 else
|
|
|
1092 tem = Qnil;
|
|
|
1093 if (NILP (tem))
|
|
|
1094 return buf;
|
|
|
1095 if (NILP (notsogood))
|
|
|
1096 notsogood = buf;
|
|
|
1097 }
|
|
|
1098 if (!NILP (notsogood))
|
|
|
1099 return notsogood;
|
|
|
1100 return Fget_buffer_create (QSscratch);
|
|
|
1101 }
|
|
|
1102
|
|
|
1103 DEFUN ("buffer-disable-undo", Fbuffer_disable_undo, 0, 1, "", /*
|
|
|
1104 Make BUFFER stop keeping undo information.
|
|
|
1105 Any undo records it already has are discarded.
|
|
|
1106 No argument or nil as argument means do this for the current buffer.
|
|
|
1107 */
|
|
|
1108 (buffer))
|
|
|
1109 {
|
|
|
1110 /* Allowing nil is an RMSism */
|
|
|
1111 struct buffer *real_buf = decode_buffer (buffer, 1);
|
|
|
1112 real_buf->undo_list = Qt;
|
|
|
1113 return Qnil;
|
|
|
1114 }
|
|
|
1115
|
|
|
1116 DEFUN ("buffer-enable-undo", Fbuffer_enable_undo, 0, 1, "", /*
|
|
|
1117 Start keeping undo information for buffer BUFFER.
|
|
|
1118 No argument or nil as argument means do this for the current buffer.
|
|
|
1119 */
|
|
|
1120 (buffer))
|
|
|
1121 {
|
|
|
1122 /* Allowing nil is an RMSism */
|
|
|
1123 struct buffer *real_buf = decode_buffer (buffer, 1);
|
|
|
1124 if (EQ (real_buf->undo_list, Qt))
|
|
|
1125 real_buf->undo_list = Qnil;
|
|
|
1126
|
|
|
1127 return Qnil;
|
|
|
1128 }
|
|
|
1129
|
|
|
1130 DEFUN ("kill-buffer", Fkill_buffer, 1, 1, "bKill buffer: ", /*
|
|
|
1131 Kill the buffer BUFFER.
|
|
|
1132 The argument may be a buffer or may be the name of a buffer.
|
|
|
1133 An argument of nil means kill the current buffer.
|
|
|
1134
|
|
|
1135 Value is t if the buffer is actually killed, nil if user says no.
|
|
|
1136
|
|
|
1137 The value of `kill-buffer-hook' (which may be local to that buffer),
|
|
|
1138 if not void, is a list of functions to be called, with no arguments,
|
|
|
1139 before the buffer is actually killed. The buffer to be killed is current
|
|
|
1140 when the hook functions are called.
|
|
|
1141
|
|
|
1142 Any processes that have this buffer as the `process-buffer' are killed
|
|
|
1143 with `delete-process'.
|
|
|
1144 */
|
|
|
1145 (buffer))
|
|
|
1146 {
|
|
|
1147 /* This function can call lisp */
|
|
|
1148 Lisp_Object buf;
|
|
|
1149 REGISTER struct buffer *b;
|
|
|
1150 struct gcpro gcpro1, gcpro2;
|
|
|
1151
|
|
|
1152 if (NILP (buffer))
|
|
|
1153 buf = Fcurrent_buffer ();
|
|
|
1154 else if (BUFFERP (buffer))
|
|
|
1155 buf = buffer;
|
|
|
1156 else
|
|
|
1157 {
|
|
|
1158 buf = get_buffer (buffer, 0);
|
|
|
1159 if (NILP (buf)) nsberror (buffer);
|
|
|
1160 }
|
|
|
1161
|
|
|
1162 b = XBUFFER (buf);
|
|
|
1163
|
|
|
1164 /* OK to delete an already-deleted buffer. */
|
|
|
1165 if (!BUFFER_LIVE_P (b))
|
|
|
1166 return Qnil;
|
|
|
1167
|
|
|
1168 /* Don't kill the minibuffer now current. */
|
|
|
1169 if (EQ (buf, Vminibuffer_zero))
|
|
|
1170 return Qnil;
|
|
|
1171
|
|
|
1172 /* Or the echo area. */
|
|
|
1173 if (EQ (buf, Vecho_area_buffer))
|
|
|
1174 return Qnil;
|
|
|
1175
|
|
|
1176 /* Query if the buffer is still modified. */
|
|
|
1177 if (INTERACTIVE && !NILP (b->filename)
|
|
|
1178 && BUF_MODIFF (b) > BUF_SAVE_MODIFF (b))
|
|
|
1179 {
|
|
|
1180 Lisp_Object killp;
|
|
|
1181 GCPRO1 (buf);
|
|
|
1182 killp = call1
|
|
|
1183 (Qyes_or_no_p,
|
|
|
1184 (emacs_doprnt_string_c
|
|
|
1185 ((CONST Bufbyte *) GETTEXT ("Buffer %s modified; kill anyway? "),
|
|
|
1186 Qnil, -1, XSTRING_DATA (b->name))));
|
|
|
1187 UNGCPRO;
|
|
|
1188 if (NILP (killp))
|
|
|
1189 return Qnil;
|
|
|
1190 b = XBUFFER (buf); /* Hypothetical relocating GC. */
|
|
|
1191 }
|
|
|
1192
|
|
|
1193 /* Run hooks with the buffer to be killed temporarily selected,
|
|
|
1194 unless the buffer is already dead (could have been deleted
|
|
|
1195 in the question above).
|
|
|
1196 */
|
|
|
1197 if (BUFFER_LIVE_P (b))
|
|
|
1198 {
|
|
|
1199 int speccount = specpdl_depth ();
|
|
|
1200 Lisp_Object tail = Qnil;
|
|
|
1201
|
|
|
1202 GCPRO2 (buf, tail);
|
|
|
1203 record_unwind_protect (save_excursion_restore, save_excursion_save ());
|
|
|
1204 Fset_buffer (buf);
|
|
|
1205
|
|
|
1206 /* First run the query functions; if any query is answered no,
|
|
|
1207 don't kill the buffer. */
|
|
|
1208 EXTERNAL_LIST_LOOP (tail, Vkill_buffer_query_functions)
|
|
|
1209 {
|
|
|
1210 if (NILP (call0 (Fcar (tail))))
|
|
|
1211 {
|
|
|
1212 UNGCPRO;
|
|
|
1213 return unbind_to (speccount, Qnil);
|
|
|
1214 }
|
|
|
1215 }
|
|
|
1216
|
|
|
1217 /* Then run the hooks. */
|
|
|
1218 run_hook (Qkill_buffer_hook);
|
|
|
1219 #ifdef HAVE_X_WINDOWS
|
|
|
1220 /* If an X selection was in this buffer, disown it.
|
|
|
1221 We could have done this by simply adding this function to the
|
|
|
1222 kill-buffer-hook, but the user might mess that up.
|
|
|
1223 */
|
|
|
1224 if (EQ (Vwindow_system, Qx))
|
|
|
1225 call0 (intern ("xselect-kill-buffer-hook"));
|
|
|
1226 /* #### generalize me! */
|
|
|
1227 #endif /* HAVE_X_WINDOWS */
|
|
|
1228 unbind_to (speccount, Qnil);
|
|
|
1229 UNGCPRO;
|
|
|
1230 b = XBUFFER (buf); /* Hypothetical relocating GC. */
|
|
|
1231 }
|
|
|
1232
|
|
|
1233 /* We have no more questions to ask. Verify that it is valid
|
|
|
1234 to kill the buffer. This must be done after the questions
|
|
|
1235 since anything can happen within yes-or-no-p. */
|
|
|
1236
|
|
|
1237 /* Might have been deleted during the last question above */
|
|
|
1238 if (!BUFFER_LIVE_P (b))
|
|
|
1239 return Qnil;
|
|
|
1240
|
|
|
1241 /* Don't kill the minibuffer now current. */
|
|
|
1242 if (EQ (buf, XWINDOW (minibuf_window)->buffer))
|
|
|
1243 return Qnil;
|
|
|
1244
|
|
|
1245 /* When we kill a base buffer, kill all its indirect buffers.
|
|
|
1246 We do it at this stage so nothing terrible happens if they
|
|
|
1247 ask questions or their hooks get errors. */
|
|
|
1248 if (! b->base_buffer)
|
|
|
1249 {
|
|
|
1250 Lisp_Object rest;
|
|
|
1251
|
|
|
1252 GCPRO1 (buf);
|
|
|
1253
|
|
|
1254 LIST_LOOP (rest, b->indirect_children)
|
|
|
1255 {
|
|
|
1256 Fkill_buffer (XCAR (rest));
|
|
|
1257 /* Keep indirect_children updated in case a
|
|
|
1258 query-function/hook throws. */
|
|
|
1259 b->indirect_children = XCDR (rest);
|
|
|
1260 }
|
|
|
1261
|
|
|
1262 UNGCPRO;
|
|
|
1263 }
|
|
|
1264
|
|
|
1265 /* Make this buffer not be current.
|
|
|
1266 In the process, notice if this is the sole visible buffer
|
|
|
1267 and give up if so. */
|
|
|
1268 if (b == current_buffer)
|
|
|
1269 {
|
|
|
1270 Fset_buffer (Fother_buffer (buf, Qnil, Qnil));
|
|
|
1271 if (b == current_buffer)
|
|
|
1272 return Qnil;
|
|
|
1273 }
|
|
|
1274
|
|
|
1275 /* Now there is no question: we can kill the buffer. */
|
|
|
1276
|
|
|
1277 #ifdef CLASH_DETECTION
|
|
|
1278 /* Unlock this buffer's file, if it is locked. unlock_buffer
|
|
|
1279 can both GC and kill the current buffer, and wreak general
|
|
|
1280 havok by running lisp code. */
|
|
|
1281 GCPRO1 (buf);
|
|
|
1282 unlock_buffer (b);
|
|
|
1283 UNGCPRO;
|
|
|
1284 b = XBUFFER (buf);
|
|
|
1285
|
|
|
1286 if (!BUFFER_LIVE_P (b))
|
|
|
1287 return Qnil;
|
|
|
1288
|
|
|
1289 if (b == current_buffer)
|
|
|
1290 {
|
|
|
1291 Fset_buffer (Fother_buffer (buf, Qnil, Qnil));
|
|
|
1292 if (b == current_buffer)
|
|
|
1293 return Qnil;
|
|
|
1294 }
|
|
|
1295 #endif /* CLASH_DETECTION */
|
|
|
1296
|
|
|
1297 {
|
|
|
1298 int speccount = specpdl_depth ();
|
|
|
1299 specbind (Qinhibit_quit, Qt);
|
|
|
1300
|
|
|
1301 kill_buffer_processes (buf);
|
|
|
1302
|
|
|
1303 /* #### This is a problem if this buffer is in a dedicated window.
|
|
|
1304 Need to undedicate any windows of this buffer first (and delete them?)
|
|
|
1305 */
|
|
|
1306 Freplace_buffer_in_windows (buf);
|
|
|
1307
|
|
|
1308 delete_from_buffer_alist (buf);
|
|
|
1309
|
|
|
1310 font_lock_buffer_was_killed (b);
|
|
|
1311
|
|
|
1312 /* Delete any auto-save file, if we saved it in this session. */
|
|
|
1313 if (STRINGP (b->auto_save_file_name)
|
|
|
1314 && b->auto_save_modified != 0
|
|
|
1315 && BUF_SAVE_MODIFF (b) < b->auto_save_modified)
|
|
|
1316 {
|
|
|
1317 if (delete_auto_save_files != 0)
|
|
|
1318 {
|
|
|
1319 /* deleting the auto save file might kill b! */
|
|
|
1320 /* #### dmoore - fix this crap, we do this same gcpro and
|
|
|
1321 buffer liveness check multiple times. Let's get a
|
|
|
1322 macro or something for it. */
|
|
|
1323 GCPRO1 (buf);
|
|
|
1324 internal_delete_file (b->auto_save_file_name);
|
|
|
1325 UNGCPRO;
|
|
|
1326 b = XBUFFER (buf);
|
|
|
1327
|
|
|
1328 if (!BUFFER_LIVE_P (b))
|
|
|
1329 return Qnil;
|
|
|
1330
|
|
|
1331 if (b == current_buffer)
|
|
|
1332 {
|
|
|
1333 Fset_buffer (Fother_buffer (buf, Qnil, Qnil));
|
|
|
1334 if (b == current_buffer)
|
|
|
1335 return Qnil;
|
|
|
1336 }
|
|
|
1337 }
|
|
|
1338 }
|
|
|
1339
|
|
|
1340 uninit_buffer_markers (b);
|
|
|
1341
|
|
|
1342 kill_buffer_local_variables (b);
|
|
|
1343
|
|
|
1344 b->name = Qnil;
|
|
|
1345 uninit_buffer_text (b);
|
|
|
1346 b->undo_list = Qnil;
|
|
|
1347 uninit_buffer_extents (b);
|
|
|
1348 if (b->base_buffer)
|
|
|
1349 {
|
|
|
1350 #ifdef ERROR_CHECK_BUFPOS
|
|
|
1351 assert (!NILP (memq_no_quit (buf, b->base_buffer->indirect_children)));
|
|
|
1352 #endif
|
|
|
1353 b->base_buffer->indirect_children =
|
|
|
1354 delq_no_quit (buf, b->base_buffer->indirect_children);
|
|
|
1355 }
|
|
|
1356
|
|
|
1357 /* Clear away all Lisp objects, so that they
|
|
|
1358 won't be protected from GC. */
|
|
|
1359 nuke_all_buffer_slots (b, Qnil);
|
|
|
1360
|
|
|
1361 unbind_to (speccount, Qnil);
|
|
|
1362 }
|
|
|
1363 return Qt;
|
|
|
1364 }
|
|
|
1365
|
|
|
1366 DEFUN ("record-buffer", Frecord_buffer, 1, 1, 0, /*
|
|
|
1367 Place buffer BUFFER first in the buffer order.
|
|
|
1368 Call this function when a buffer is selected "visibly".
|
|
|
1369
|
|
|
1370 This function changes the global buffer order and the per-frame buffer
|
|
|
1371 order for the selected frame. The buffer order keeps track of recency
|
|
|
1372 of selection so that `other-buffer' will return a recently selected
|
|
|
1373 buffer. See `other-buffer' for more information.
|
|
|
1374 */
|
|
|
1375 (buffer))
|
|
|
1376 {
|
|
|
1377 REGISTER Lisp_Object lynk, prev;
|
|
|
1378 struct frame *f = selected_frame ();
|
|
|
1379
|
|
|
1380 prev = Qnil;
|
|
|
1381 for (lynk = Vbuffer_alist; CONSP (lynk); lynk = XCDR (lynk))
|
|
|
1382 {
|
|
|
1383 if (EQ (XCDR (XCAR (lynk)), buffer))
|
|
|
1384 break;
|
|
|
1385 prev = lynk;
|
|
|
1386 }
|
|
|
1387 /* Effectively do Vbuffer_alist = delq_no_quit (lynk, Vbuffer_alist) */
|
|
|
1388 if (NILP (prev))
|
|
|
1389 Vbuffer_alist = XCDR (Vbuffer_alist);
|
|
|
1390 else
|
|
|
1391 XCDR (prev) = XCDR (XCDR (prev));
|
|
|
1392 XCDR (lynk) = Vbuffer_alist;
|
|
|
1393 Vbuffer_alist = lynk;
|
|
|
1394
|
|
|
1395 /* That was the global one. Now do the same thing for the
|
|
|
1396 per-frame buffer-alist. */
|
|
|
1397 prev = Qnil;
|
|
|
1398 for (lynk = f->buffer_alist; CONSP (lynk); lynk = XCDR (lynk))
|
|
|
1399 {
|
|
|
1400 if (EQ (XCDR (XCAR (lynk)), buffer))
|
|
|
1401 break;
|
|
|
1402 prev = lynk;
|
|
|
1403 }
|
|
|
1404 /* Effectively do f->buffer_alist = delq_no_quit (lynk, f->buffer_alist) */
|
|
|
1405 if (NILP (prev))
|
|
|
1406 f->buffer_alist = XCDR (f->buffer_alist);
|
|
|
1407 else
|
|
|
1408 XCDR (prev) = XCDR (XCDR (prev));
|
|
|
1409 XCDR (lynk) = f->buffer_alist;
|
|
|
1410 f->buffer_alist = lynk;
|
|
|
1411
|
|
|
1412 va_run_hook_with_args (Qrecord_buffer_hook, 1, buffer);
|
|
|
1413
|
|
|
1414 return Qnil;
|
|
|
1415 }
|
|
|
1416
|
|
|
1417 DEFUN ("set-buffer-major-mode", Fset_buffer_major_mode, 1, 1, 0, /*
|
|
|
1418 Set an appropriate major mode for BUFFER, according to `default-major-mode'.
|
|
|
1419 Use this function before selecting the buffer, since it may need to inspect
|
|
|
1420 the current buffer's major mode.
|
|
|
1421 */
|
|
|
1422 (buffer))
|
|
|
1423 {
|
|
|
1424 int speccount = specpdl_depth ();
|
|
|
1425 Lisp_Object function = XBUFFER (Vbuffer_defaults)->major_mode;
|
|
|
1426
|
|
|
1427 if (NILP (function))
|
|
|
1428 {
|
|
|
1429 Lisp_Object tem = Fget (current_buffer->major_mode, Qmode_class, Qnil);
|
|
|
1430 if (NILP (tem))
|
|
|
1431 function = current_buffer->major_mode;
|
|
|
1432 }
|
|
|
1433
|
|
|
1434 if (NILP (function) || EQ (function, Qfundamental_mode))
|
|
|
1435 return Qnil;
|
|
|
1436
|
|
|
1437 /* To select a nonfundamental mode,
|
|
|
1438 select the buffer temporarily and then call the mode function. */
|
|
|
1439
|
|
|
1440 record_unwind_protect (Fset_buffer, Fcurrent_buffer ());
|
|
|
1441
|
|
|
1442 Fset_buffer (buffer);
|
|
|
1443 call0 (function);
|
|
|
1444
|
|
|
1445 return unbind_to (speccount, Qnil);
|
|
|
1446 }
|
|
|
1447
|
|
|
1448 void
|
|
|
1449 switch_to_buffer (Lisp_Object bufname, Lisp_Object norecord)
|
|
|
1450 {
|
|
|
1451 call2 (Qswitch_to_buffer, bufname, norecord);
|
|
|
1452 }
|
|
|
1453
|
|
|
1454
|
|
|
1455 DEFUN ("current-buffer", Fcurrent_buffer, 0, 0, 0, /*
|
|
|
1456 Return the current buffer as a Lisp object.
|
|
|
1457 */
|
|
|
1458 ())
|
|
|
1459 {
|
|
|
1460 Lisp_Object buffer;
|
|
|
1461 XSETBUFFER (buffer, current_buffer);
|
|
|
1462 return buffer;
|
|
|
1463 }
|
|
|
1464
|
|
|
1465 /* Set the current buffer to B. */
|
|
|
1466
|
|
|
1467 void
|
|
|
1468 set_buffer_internal (struct buffer *b)
|
|
|
1469 {
|
|
|
1470 REGISTER struct buffer *old_buf;
|
|
|
1471 REGISTER Lisp_Object tail;
|
|
|
1472
|
|
|
1473 if (current_buffer == b)
|
|
|
1474 return;
|
|
|
1475
|
|
|
1476 INVALIDATE_PIXEL_TO_GLYPH_CACHE;
|
|
|
1477
|
|
|
1478 old_buf = current_buffer;
|
|
|
1479 current_buffer = b;
|
|
|
1480 invalidate_current_column (); /* invalidate indentation cache */
|
|
|
1481
|
|
|
1482 #ifdef HAVE_FEP
|
|
|
1483 if (!noninteractive && initialized)
|
|
|
1484 {
|
|
|
1485 extern Lisp_Object Ffep_force_on (), Ffep_force_off (), Ffep_get_mode ();
|
|
|
1486
|
|
|
1487 old_buf->fep_mode = Ffep_get_mode ();
|
|
|
1488
|
|
|
1489 if (!NILP (current_buffer->fep_mode))
|
|
|
1490 Ffep_force_on ();
|
|
|
1491 else
|
|
|
1492 Ffep_force_off ();
|
|
|
1493 }
|
|
|
1494 #endif /* HAVE_FEP */
|
|
|
1495
|
|
|
1496 if (old_buf)
|
|
|
1497 {
|
|
|
1498 /* Put the undo list back in the base buffer, so that it appears
|
|
|
1499 that an indirect buffer shares the undo list of its base. */
|
|
|
1500 if (old_buf->base_buffer)
|
|
|
1501 old_buf->base_buffer->undo_list = old_buf->undo_list;
|
|
|
1502 }
|
|
|
1503
|
|
|
1504 /* Get the undo list from the base buffer, so that it appears
|
|
|
1505 that an indirect buffer shares the undo list of its base. */
|
|
|
1506 if (b->base_buffer)
|
|
|
1507 b->undo_list = b->base_buffer->undo_list;
|
|
|
1508
|
|
|
1509 /* Look down buffer's list of local Lisp variables
|
|
|
1510 to find and update any that forward into C variables. */
|
|
|
1511
|
|
|
1512 LIST_LOOP (tail, b->local_var_alist)
|
|
|
1513 {
|
|
|
1514 Lisp_Object sym = XCAR (XCAR (tail));
|
|
|
1515 Lisp_Object valcontents = XSYMBOL (sym)->value;
|
|
|
1516 if (SYMBOL_VALUE_MAGIC_P (valcontents))
|
|
|
1517 {
|
|
|
1518 /* Just reference the variable
|
|
|
1519 to cause it to become set for this buffer. */
|
|
|
1520 /* Use find_symbol_value_quickly to avoid an unnecessary O(n)
|
|
|
1521 lookup. */
|
|
|
1522 (void) find_symbol_value_quickly (XCAR (tail), 1);
|
|
|
1523 }
|
|
|
1524 }
|
|
|
1525
|
|
|
1526 /* Do the same with any others that were local to the previous buffer */
|
|
|
1527
|
|
|
1528 if (old_buf)
|
|
|
1529 {
|
|
|
1530 LIST_LOOP (tail, old_buf->local_var_alist)
|
|
|
1531 {
|
|
|
1532 Lisp_Object sym = XCAR (XCAR (tail));
|
|
|
1533 Lisp_Object valcontents = XSYMBOL (sym)->value;
|
|
|
1534
|
|
|
1535 if (SYMBOL_VALUE_MAGIC_P (valcontents))
|
|
|
1536 {
|
|
|
1537 /* Just reference the variable
|
|
|
1538 to cause it to become set for this buffer. */
|
|
|
1539 /* Use find_symbol_value_quickly with find_it_p as 0 to avoid an
|
|
|
1540 unnecessary O(n) lookup which is guaranteed to be worst case.
|
|
|
1541 Any symbols which are local are guaranteed to have been
|
|
|
1542 handled in the previous loop, above. */
|
|
|
1543 (void) find_symbol_value_quickly (sym, 0);
|
|
|
1544 }
|
|
|
1545 }
|
|
|
1546 }
|
|
|
1547 }
|
|
|
1548
|
|
|
1549 DEFUN ("set-buffer", Fset_buffer, 1, 1, 0, /*
|
|
|
1550 Make the buffer BUFFER current for editing operations.
|
|
|
1551 BUFFER may be a buffer or the name of an existing buffer.
|
|
|
1552 See also `save-excursion' when you want to make a buffer current temporarily.
|
|
|
1553 This function does not display the buffer, so its effect ends
|
|
|
1554 when the current command terminates.
|
|
|
1555 Use `switch-to-buffer' or `pop-to-buffer' to switch buffers permanently.
|
|
|
1556 */
|
|
|
1557 (buffer))
|
|
|
1558 {
|
|
|
1559 buffer = get_buffer (buffer, 0);
|
|
|
1560 if (NILP (buffer))
|
|
|
1561 error ("Selecting deleted or non-existent buffer");
|
|
|
1562 set_buffer_internal (XBUFFER (buffer));
|
|
|
1563 return buffer;
|
|
|
1564 }
|
|
|
1565
|
|
|
1566
|
|
|
1567 DEFUN ("barf-if-buffer-read-only", Fbarf_if_buffer_read_only, 0, 3, 0, /*
|
|
|
1568 Signal a `buffer-read-only' error if the buffer is read-only.
|
|
|
1569 Optional argument BUFFER defaults to the current buffer.
|
|
|
1570
|
|
|
1571 If optional argument START is non-nil, all extents in the buffer
|
|
|
1572 which overlap that part of the buffer are checked to ensure none has a
|
|
|
1573 `read-only' property. (Extents that lie completely within the range,
|
|
|
1574 however, are not checked.) END defaults to the value of START.
|
|
|
1575
|
|
|
1576 If START and END are equal, the range checked is [START, END] (i.e.
|
|
|
1577 closed on both ends); otherwise, the range checked is (START, END)
|
|
|
1578 \(open on both ends), except that extents that lie completely within
|
|
|
1579 [START, END] are not checked. See `extent-in-region-p' for a fuller
|
|
|
1580 discussion.
|
|
|
1581 */
|
|
|
1582 (buffer, start, end))
|
|
|
1583 {
|
|
|
1584 struct buffer *b = decode_buffer (buffer, 0);
|
|
|
1585 Bufpos s, e;
|
|
|
1586
|
|
|
1587 if (NILP (start))
|
|
|
1588 s = e = -1;
|
|
|
1589 else
|
|
|
1590 {
|
|
|
1591 if (NILP (end))
|
|
|
1592 end = start;
|
|
|
1593 get_buffer_range_char (b, start, end, &s, &e, 0);
|
|
|
1594 }
|
|
|
1595 barf_if_buffer_read_only (b, s, e);
|
|
|
1596
|
|
|
1597 return Qnil;
|
|
|
1598 }
|
|
|
1599
|
|
|
1600 static void
|
|
|
1601 bury_buffer_1 (Lisp_Object buffer, Lisp_Object before,
|
|
|
1602 Lisp_Object *buffer_alist)
|
|
|
1603 {
|
|
|
1604 Lisp_Object aelt = rassq_no_quit (buffer, *buffer_alist);
|
|
|
1605 Lisp_Object lynk = memq_no_quit (aelt, *buffer_alist);
|
|
|
1606 Lisp_Object iter, before_before;
|
|
|
1607
|
|
|
1608 *buffer_alist = delq_no_quit (aelt, *buffer_alist);
|
|
|
1609 for (before_before = Qnil, iter = *buffer_alist;
|
|
|
1610 !NILP (iter) && !EQ (XCDR (XCAR (iter)), before);
|
|
|
1611 before_before = iter, iter = XCDR (iter))
|
|
|
1612 ;
|
|
|
1613 XCDR (lynk) = iter;
|
|
|
1614 if (!NILP (before_before))
|
|
|
1615 XCDR (before_before) = lynk;
|
|
|
1616 else
|
|
|
1617 *buffer_alist = lynk;
|
|
|
1618 }
|
|
|
1619
|
|
|
1620 DEFUN ("bury-buffer", Fbury_buffer, 0, 2, "", /*
|
|
|
1621 Put BUFFER at the end of the list of all buffers.
|
|
|
1622 There it is the least likely candidate for `other-buffer' to return;
|
|
|
1623 thus, the least likely buffer for \\[switch-to-buffer] to select by default.
|
|
|
1624 If BUFFER is nil or omitted, bury the current buffer.
|
|
|
1625 Also, if BUFFER is nil or omitted, remove the current buffer from the
|
|
|
1626 selected window if it is displayed there.
|
|
434
|
1627 Because of this, you may need to specify (current-buffer) as
|
|
|
1628 BUFFER when calling from minibuffer.
|
|
428
|
1629 If BEFORE is non-nil, it specifies a buffer before which BUFFER
|
|
|
1630 will be placed, instead of being placed at the end.
|
|
|
1631 */
|
|
|
1632 (buffer, before))
|
|
|
1633 {
|
|
|
1634 /* This function can GC */
|
|
|
1635 struct buffer *buf = decode_buffer (buffer, 1);
|
|
|
1636 /* If we're burying the current buffer, unshow it. */
|
|
|
1637 /* Note that the behavior of (bury-buffer nil) and
|
|
|
1638 (bury-buffer (current-buffer)) is not the same.
|
|
|
1639 This is illogical but is historical. Changing it
|
|
|
1640 breaks mh-e and TeX and such packages. */
|
|
|
1641 if (NILP (buffer))
|
|
|
1642 switch_to_buffer (Fother_buffer (Fcurrent_buffer (), Qnil, Qnil), Qnil);
|
|
|
1643 XSETBUFFER (buffer, buf);
|
|
|
1644
|
|
|
1645 if (!NILP (before))
|
|
|
1646 before = get_buffer (before, 1);
|
|
|
1647
|
|
|
1648 if (EQ (before, buffer))
|
|
|
1649 error ("Cannot place a buffer before itself");
|
|
|
1650
|
|
|
1651 bury_buffer_1 (buffer, before, &Vbuffer_alist);
|
|
|
1652 bury_buffer_1 (buffer, before, &selected_frame ()->buffer_alist);
|
|
|
1653
|
|
|
1654 return Qnil;
|
|
|
1655 }
|
|
|
1656
|
|
|
1657
|
|
|
1658 DEFUN ("erase-buffer", Ferase_buffer, 0, 1, "*", /*
|
|
|
1659 Delete the entire contents of the BUFFER.
|
|
|
1660 Any clipping restriction in effect (see `narrow-to-region') is removed,
|
|
|
1661 so the buffer is truly empty after this.
|
|
|
1662 BUFFER defaults to the current buffer if omitted.
|
|
|
1663 */
|
|
|
1664 (buffer))
|
|
|
1665 {
|
|
|
1666 /* This function can GC */
|
|
|
1667 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
1668 /* #### yuck yuck yuck. This is gross. The old echo-area code,
|
|
|
1669 however, was the only place that called erase_buffer() with a
|
|
|
1670 non-zero NO_CLIP argument.
|
|
|
1671
|
|
|
1672 Someone needs to fix up the redisplay code so it is smarter
|
|
|
1673 about this, so that the NO_CLIP junk isn't necessary. */
|
|
|
1674 int no_clip = (b == XBUFFER (Vecho_area_buffer));
|
|
|
1675
|
|
|
1676 INVALIDATE_PIXEL_TO_GLYPH_CACHE;
|
|
|
1677
|
|
|
1678 widen_buffer (b, no_clip);
|
|
|
1679 buffer_delete_range (b, BUF_BEG (b), BUF_Z (b), 0);
|
|
|
1680 b->last_window_start = 1;
|
|
|
1681
|
|
|
1682 /* Prevent warnings, or suspension of auto saving, that would happen
|
|
|
1683 if future size is less than past size. Use of erase-buffer
|
|
|
1684 implies that the future text is not really related to the past text. */
|
|
|
1685 b->saved_size = Qzero;
|
|
|
1686
|
|
|
1687 zmacs_region_stays = 0;
|
|
|
1688 return Qnil;
|
|
|
1689 }
|
|
|
1690
|
|
|
1691
|
|
|
1692
|
|
|
1693 DEFUN ("kill-all-local-variables", Fkill_all_local_variables, 0, 0, 0, /*
|
|
|
1694 Switch to Fundamental mode by killing current buffer's local variables.
|
|
|
1695 Most local variable bindings are eliminated so that the default values
|
|
|
1696 become effective once more. Also, the syntax table is set from
|
|
|
1697 `standard-syntax-table', the category table is set from
|
|
|
1698 `standard-category-table' (if support for Mule exists), local keymap is set
|
|
|
1699 to nil, the abbrev table is set from `fundamental-mode-abbrev-table',
|
|
|
1700 and all specifier specifications whose locale is the current buffer
|
|
|
1701 are removed. This function also forces redisplay of the modeline.
|
|
|
1702
|
|
|
1703 Every function to select a new major mode starts by
|
|
|
1704 calling this function.
|
|
|
1705
|
|
|
1706 As a special exception, local variables whose names have
|
|
|
1707 a non-nil `permanent-local' property are not eliminated by this function.
|
|
|
1708
|
|
|
1709 The first thing this function does is run
|
|
|
1710 the normal hook `change-major-mode-hook'.
|
|
|
1711 */
|
|
|
1712 ())
|
|
|
1713 {
|
|
|
1714 /* This function can GC */
|
|
|
1715 run_hook (Qchange_major_mode_hook);
|
|
|
1716
|
|
|
1717 reset_buffer_local_variables (current_buffer, 0);
|
|
|
1718
|
|
|
1719 kill_buffer_local_variables (current_buffer);
|
|
|
1720
|
|
|
1721 kill_specifier_buffer_locals (Fcurrent_buffer ());
|
|
|
1722
|
|
|
1723 /* Force modeline redisplay. Useful here because all major mode
|
|
|
1724 commands call this function. */
|
|
|
1725 MARK_MODELINE_CHANGED;
|
|
|
1726
|
|
|
1727 return Qnil;
|
|
|
1728 }
|
|
|
1729
|
|
|
1730 #ifdef MEMORY_USAGE_STATS
|
|
|
1731
|
|
|
1732 struct buffer_stats
|
|
|
1733 {
|
|
|
1734 int text;
|
|
|
1735 int markers;
|
|
|
1736 int extents;
|
|
|
1737 int other;
|
|
|
1738 };
|
|
|
1739
|
|
|
1740 static size_t
|
|
|
1741 compute_buffer_text_usage (struct buffer *b, struct overhead_stats *ovstats)
|
|
|
1742 {
|
|
|
1743 int was_requested = b->text->z - 1;
|
|
|
1744 size_t gap = b->text->gap_size + b->text->end_gap_size;
|
|
|
1745 size_t malloc_use = malloced_storage_size (b->text->beg, was_requested + gap, 0);
|
|
|
1746
|
|
|
1747 ovstats->gap_overhead += gap;
|
|
|
1748 ovstats->was_requested += was_requested;
|
|
|
1749 ovstats->malloc_overhead += malloc_use - (was_requested + gap);
|
|
|
1750 return malloc_use;
|
|
|
1751 }
|
|
|
1752
|
|
|
1753 static void
|
|
|
1754 compute_buffer_usage (struct buffer *b, struct buffer_stats *stats,
|
|
|
1755 struct overhead_stats *ovstats)
|
|
|
1756 {
|
|
|
1757 xzero (*stats);
|
|
|
1758 stats->other += malloced_storage_size (b, sizeof (*b), ovstats);
|
|
|
1759 stats->text += compute_buffer_text_usage (b, ovstats);
|
|
|
1760 stats->markers += compute_buffer_marker_usage (b, ovstats);
|
|
|
1761 stats->extents += compute_buffer_extent_usage (b, ovstats);
|
|
|
1762 }
|
|
|
1763
|
|
|
1764 DEFUN ("buffer-memory-usage", Fbuffer_memory_usage, 1, 1, 0, /*
|
|
|
1765 Return stats about the memory usage of buffer BUFFER.
|
|
|
1766 The values returned are in the form of an alist of usage types and byte
|
|
|
1767 counts. The byte counts attempt to encompass all the memory used
|
|
|
1768 by the buffer (separate from the memory logically associated with a
|
|
|
1769 buffer or frame), including internal structures and any malloc()
|
|
|
1770 overhead associated with them. In practice, the byte counts are
|
|
|
1771 underestimated because certain memory usage is very hard to determine
|
|
|
1772 \(e.g. the amount of memory used inside the Xt library or inside the
|
|
|
1773 X server) and because there is other stuff that might logically
|
|
|
1774 be associated with a window, buffer, or frame (e.g. window configurations,
|
|
|
1775 glyphs) but should not obviously be included in the usage counts.
|
|
|
1776
|
|
|
1777 Multiple slices of the total memory usage may be returned, separated
|
|
|
1778 by a nil. Each slice represents a particular view of the memory, a
|
|
|
1779 particular way of partitioning it into groups. Within a slice, there
|
|
|
1780 is no overlap between the groups of memory, and each slice collectively
|
|
|
1781 represents all the memory concerned.
|
|
|
1782 */
|
|
|
1783 (buffer))
|
|
|
1784 {
|
|
|
1785 struct buffer_stats stats;
|
|
|
1786 struct overhead_stats ovstats;
|
|
|
1787 Lisp_Object val = Qnil;
|
|
|
1788
|
|
|
1789 CHECK_BUFFER (buffer); /* dead buffers should be allowed, no? */
|
|
|
1790 xzero (ovstats);
|
|
|
1791 compute_buffer_usage (XBUFFER (buffer), &stats, &ovstats);
|
|
|
1792
|
|
|
1793 val = acons (Qtext, make_int (stats.text), val);
|
|
|
1794 val = acons (Qmarkers, make_int (stats.markers), val);
|
|
|
1795 val = acons (Qextents, make_int (stats.extents), val);
|
|
|
1796 val = acons (Qother, make_int (stats.other), val);
|
|
|
1797 val = Fcons (Qnil, val);
|
|
|
1798 val = acons (Qactually_requested, make_int (ovstats.was_requested), val);
|
|
|
1799 val = acons (Qmalloc_overhead, make_int (ovstats.malloc_overhead), val);
|
|
|
1800 val = acons (Qgap_overhead, make_int (ovstats.gap_overhead), val);
|
|
|
1801 val = acons (Qdynarr_overhead, make_int (ovstats.dynarr_overhead), val);
|
|
|
1802
|
|
|
1803 return Fnreverse (val);
|
|
|
1804 }
|
|
|
1805
|
|
|
1806 #endif /* MEMORY_USAGE_STATS */
|
|
|
1807
|
|
|
1808 void
|
|
|
1809 syms_of_buffer (void)
|
|
|
1810 {
|
|
|
1811 defsymbol (&Qbuffer_live_p, "buffer-live-p");
|
|
|
1812 defsymbol (&Qbuffer_or_string_p, "buffer-or-string-p");
|
|
|
1813 defsymbol (&Qmode_class, "mode-class");
|
|
|
1814 defsymbol (&Qrename_auto_save_file, "rename-auto-save-file");
|
|
|
1815 defsymbol (&Qkill_buffer_hook, "kill-buffer-hook");
|
|
|
1816 defsymbol (&Qrecord_buffer_hook, "record-buffer-hook");
|
|
|
1817 defsymbol (&Qpermanent_local, "permanent-local");
|
|
|
1818
|
|
|
1819 defsymbol (&Qfirst_change_hook, "first-change-hook");
|
|
|
1820 defsymbol (&Qbefore_change_functions, "before-change-functions");
|
|
|
1821 defsymbol (&Qafter_change_functions, "after-change-functions");
|
|
|
1822
|
|
|
1823 /* #### Obsolete, for compatibility */
|
|
|
1824 defsymbol (&Qbefore_change_function, "before-change-function");
|
|
|
1825 defsymbol (&Qafter_change_function, "after-change-function");
|
|
|
1826
|
|
|
1827 defsymbol (&Qdefault_directory, "default-directory");
|
|
|
1828
|
|
|
1829 defsymbol (&Qget_file_buffer, "get-file-buffer");
|
|
|
1830 defsymbol (&Qchange_major_mode_hook, "change-major-mode-hook");
|
|
|
1831
|
|
|
1832 defsymbol (&Qfundamental_mode, "fundamental-mode");
|
|
|
1833
|
|
|
1834 defsymbol (&Qfind_file_compare_truenames, "find-file-compare-truenames");
|
|
|
1835
|
|
|
1836 defsymbol (&Qswitch_to_buffer, "switch-to-buffer");
|
|
|
1837
|
|
|
1838 DEFSUBR (Fbufferp);
|
|
|
1839 DEFSUBR (Fbuffer_live_p);
|
|
|
1840 DEFSUBR (Fbuffer_list);
|
|
|
1841 DEFSUBR (Fdecode_buffer);
|
|
|
1842 DEFSUBR (Fget_buffer);
|
|
|
1843 DEFSUBR (Fget_file_buffer);
|
|
|
1844 DEFSUBR (Fget_buffer_create);
|
|
|
1845 DEFSUBR (Fmake_indirect_buffer);
|
|
|
1846
|
|
|
1847 DEFSUBR (Fgenerate_new_buffer_name);
|
|
|
1848 DEFSUBR (Fbuffer_name);
|
|
|
1849 DEFSUBR (Fbuffer_file_name);
|
|
|
1850 DEFSUBR (Fbuffer_base_buffer);
|
|
|
1851 DEFSUBR (Fbuffer_indirect_children);
|
|
|
1852 DEFSUBR (Fbuffer_local_variables);
|
|
|
1853 DEFSUBR (Fbuffer_dedicated_frame);
|
|
|
1854 DEFSUBR (Fset_buffer_dedicated_frame);
|
|
|
1855 DEFSUBR (Fbuffer_modified_p);
|
|
|
1856 DEFSUBR (Fset_buffer_modified_p);
|
|
|
1857 DEFSUBR (Fbuffer_modified_tick);
|
|
|
1858 DEFSUBR (Frename_buffer);
|
|
|
1859 DEFSUBR (Fother_buffer);
|
|
|
1860 DEFSUBR (Fbuffer_disable_undo);
|
|
|
1861 DEFSUBR (Fbuffer_enable_undo);
|
|
|
1862 DEFSUBR (Fkill_buffer);
|
|
|
1863 DEFSUBR (Ferase_buffer);
|
|
|
1864 DEFSUBR (Frecord_buffer);
|
|
|
1865 DEFSUBR (Fset_buffer_major_mode);
|
|
|
1866 DEFSUBR (Fcurrent_buffer);
|
|
|
1867 DEFSUBR (Fset_buffer);
|
|
|
1868 DEFSUBR (Fbarf_if_buffer_read_only);
|
|
|
1869 DEFSUBR (Fbury_buffer);
|
|
|
1870 DEFSUBR (Fkill_all_local_variables);
|
|
|
1871 #ifdef MEMORY_USAGE_STATS
|
|
|
1872 DEFSUBR (Fbuffer_memory_usage);
|
|
|
1873 #endif
|
|
|
1874
|
|
|
1875 deferror (&Qprotected_field, "protected-field",
|
|
|
1876 "Attempt to modify a protected field", Qerror);
|
|
|
1877 }
|
|
|
1878
|
|
|
1879 void
|
|
|
1880 reinit_vars_of_buffer (void)
|
|
|
1881 {
|
|
|
1882 staticpro_nodump (&Vbuffer_alist);
|
|
|
1883 Vbuffer_alist = Qnil;
|
|
|
1884 current_buffer = 0;
|
|
|
1885 }
|
|
|
1886
|
|
|
1887 /* initialize the buffer routines */
|
|
|
1888 void
|
|
|
1889 vars_of_buffer (void)
|
|
|
1890 {
|
|
|
1891 /* This function can GC */
|
|
|
1892 reinit_vars_of_buffer ();
|
|
|
1893
|
|
|
1894 staticpro (&QSFundamental);
|
|
|
1895 staticpro (&QSscratch);
|
|
|
1896
|
|
|
1897 QSFundamental = build_string ("Fundamental");
|
|
|
1898 QSscratch = build_string (DEFER_GETTEXT ("*scratch*"));
|
|
|
1899
|
|
|
1900 DEFVAR_LISP ("change-major-mode-hook", &Vchange_major_mode_hook /*
|
|
|
1901 List of hooks to be run before killing local variables in a buffer.
|
|
|
1902 This should be used by any mode that temporarily alters the contents or
|
|
|
1903 the read-only state of the buffer. See also `kill-all-local-variables'.
|
|
|
1904 */ );
|
|
|
1905 Vchange_major_mode_hook = Qnil;
|
|
|
1906
|
|
|
1907 DEFVAR_BOOL ("find-file-compare-truenames", &find_file_compare_truenames /*
|
|
|
1908 If this is true, then the find-file command will check the truenames
|
|
|
1909 of all visited files when deciding whether a given file is already in
|
|
|
1910 a buffer, instead of just the buffer-file-name. This means that if you
|
|
|
1911 attempt to visit another file which is a symbolic-link to a file which is
|
|
|
1912 already in a buffer, the existing buffer will be found instead of a newly-
|
|
|
1913 created one. This works if any component of the pathname (including a non-
|
|
|
1914 terminal component) is a symbolic link as well, but doesn't work with hard
|
|
|
1915 links (nothing does).
|
|
|
1916
|
|
|
1917 See also the variable find-file-use-truenames.
|
|
|
1918 */ );
|
|
|
1919 find_file_compare_truenames = 0;
|
|
|
1920
|
|
|
1921 DEFVAR_BOOL ("find-file-use-truenames", &find_file_use_truenames /*
|
|
|
1922 If this is true, then a buffer's visited file-name will always be
|
|
|
1923 chased back to the real file; it will never be a symbolic link, and there
|
|
|
1924 will never be a symbolic link anywhere in its directory path.
|
|
|
1925 That is, the buffer-file-name and buffer-file-truename will be equal.
|
|
|
1926 This doesn't work with hard links.
|
|
|
1927
|
|
|
1928 See also the variable find-file-compare-truenames.
|
|
|
1929 */ );
|
|
|
1930 find_file_use_truenames = 0;
|
|
|
1931
|
|
|
1932 DEFVAR_LISP ("before-change-functions", &Vbefore_change_functions /*
|
|
|
1933 List of functions to call before each text change.
|
|
|
1934 Two arguments are passed to each function: the positions of
|
|
|
1935 the beginning and end of the range of old text to be changed.
|
|
|
1936 \(For an insertion, the beginning and end are at the same place.)
|
|
|
1937 No information is given about the length of the text after the change.
|
|
|
1938
|
|
|
1939 Buffer changes made while executing the `before-change-functions'
|
|
|
1940 don't call any before-change or after-change functions.
|
|
|
1941 */ );
|
|
|
1942 Vbefore_change_functions = Qnil;
|
|
|
1943
|
|
|
1944 /* FSF Emacs has the following additional doc at the end of
|
|
|
1945 before-change-functions and after-change-functions:
|
|
|
1946
|
|
|
1947 That's because these variables are temporarily set to nil.
|
|
|
1948 As a result, a hook function cannot straightforwardly alter the value of
|
|
|
1949 these variables. See the Emacs Lisp manual for a way of
|
|
|
1950 accomplishing an equivalent result by using other variables.
|
|
|
1951
|
|
|
1952 But this doesn't apply under XEmacs because things are
|
|
|
1953 handled better. */
|
|
|
1954
|
|
|
1955 DEFVAR_LISP ("after-change-functions", &Vafter_change_functions /*
|
|
|
1956 List of functions to call after each text change.
|
|
|
1957 Three arguments are passed to each function: the positions of
|
|
|
1958 the beginning and end of the range of changed text,
|
|
|
1959 and the length of the pre-change text replaced by that range.
|
|
|
1960 \(For an insertion, the pre-change length is zero;
|
|
|
1961 for a deletion, that length is the number of characters deleted,
|
|
|
1962 and the post-change beginning and end are at the same place.)
|
|
|
1963
|
|
|
1964 Buffer changes made while executing `after-change-functions'
|
|
|
1965 don't call any before-change or after-change functions.
|
|
|
1966 */ );
|
|
|
1967 Vafter_change_functions = Qnil;
|
|
|
1968
|
|
|
1969 DEFVAR_LISP ("before-change-function", &Vbefore_change_function /*
|
|
|
1970
|
|
|
1971 */ ); /* obsoleteness will be documented */
|
|
|
1972 Vbefore_change_function = Qnil;
|
|
|
1973
|
|
|
1974 DEFVAR_LISP ("after-change-function", &Vafter_change_function /*
|
|
|
1975
|
|
|
1976 */ ); /* obsoleteness will be documented */
|
|
|
1977 Vafter_change_function = Qnil;
|
|
|
1978
|
|
|
1979 DEFVAR_LISP ("first-change-hook", &Vfirst_change_hook /*
|
|
|
1980 A list of functions to call before changing a buffer which is unmodified.
|
|
|
1981 The functions are run using the `run-hooks' function.
|
|
|
1982 */ );
|
|
|
1983 Vfirst_change_hook = Qnil;
|
|
|
1984
|
|
|
1985 #if 0 /* FSFmacs */
|
|
|
1986 xxDEFVAR_LISP ("transient-mark-mode", &Vtransient_mark_mode /*
|
|
|
1987 *Non-nil means deactivate the mark when the buffer contents change.
|
|
|
1988 */ );
|
|
|
1989 Vtransient_mark_mode = Qnil;
|
|
|
1990 #endif /* FSFmacs */
|
|
|
1991
|
|
|
1992 DEFVAR_INT ("undo-threshold", &undo_threshold /*
|
|
|
1993 Keep no more undo information once it exceeds this size.
|
|
|
1994 This threshold is applied when garbage collection happens.
|
|
|
1995 The size is counted as the number of bytes occupied,
|
|
|
1996 which includes both saved text and other data.
|
|
|
1997 */ );
|
|
|
1998 undo_threshold = 20000;
|
|
|
1999
|
|
|
2000 DEFVAR_INT ("undo-high-threshold", &undo_high_threshold /*
|
|
|
2001 Don't keep more than this much size of undo information.
|
|
|
2002 A command which pushes past this size is itself forgotten.
|
|
|
2003 This threshold is applied when garbage collection happens.
|
|
|
2004 The size is counted as the number of bytes occupied,
|
|
|
2005 which includes both saved text and other data.
|
|
|
2006 */ );
|
|
|
2007 undo_high_threshold = 30000;
|
|
|
2008
|
|
|
2009 DEFVAR_LISP ("inhibit-read-only", &Vinhibit_read_only /*
|
|
|
2010 *Non-nil means disregard read-only status of buffers or characters.
|
|
|
2011 If the value is t, disregard `buffer-read-only' and all `read-only'
|
|
|
2012 text properties. If the value is a list, disregard `buffer-read-only'
|
|
|
2013 and disregard a `read-only' extent property or text property if the
|
|
|
2014 property value is a member of the list.
|
|
|
2015 */ );
|
|
|
2016 Vinhibit_read_only = Qnil;
|
|
|
2017
|
|
|
2018 DEFVAR_LISP ("kill-buffer-query-functions", &Vkill_buffer_query_functions /*
|
|
|
2019 List of functions called with no args to query before killing a buffer.
|
|
|
2020 */ );
|
|
|
2021 Vkill_buffer_query_functions = Qnil;
|
|
|
2022
|
|
|
2023 DEFVAR_BOOL ("delete-auto-save-files", &delete_auto_save_files /*
|
|
|
2024 *Non-nil means delete auto-save file when a buffer is saved or killed.
|
|
|
2025 */ );
|
|
|
2026 delete_auto_save_files = 1;
|
|
|
2027 }
|
|
|
2028
|
|
|
2029 /* The docstrings for DEFVAR_* are recorded externally by make-docfile. */
|
|
|
2030
|
|
|
2031 /* Renamed from DEFVAR_PER_BUFFER because FSFmacs D_P_B takes
|
|
|
2032 a bogus extra arg, which confuses an otherwise identical make-docfile.c */
|
|
|
2033
|
|
|
2034 /* Declaring this stuff as const produces 'Cannot reinitialize' messages
|
|
|
2035 from SunPro C's fix-and-continue feature (a way neato feature that
|
|
|
2036 makes debugging unbelievably more bearable) */
|
|
|
2037 #define DEFVAR_BUFFER_LOCAL_1(lname, field_name, forward_type, magicfun) do { \
|
|
|
2038 static CONST_IF_NOT_DEBUG struct symbol_value_forward I_hate_C \
|
|
|
2039 = { { { symbol_value_forward_lheader_initializer, \
|
|
|
2040 (struct lcrecord_header *) &(buffer_local_flags.field_name), 69 }, \
|
|
|
2041 forward_type }, magicfun }; \
|
|
|
2042 { \
|
|
|
2043 int offset = ((char *)symbol_value_forward_forward (&I_hate_C) - \
|
|
|
2044 (char *)&buffer_local_flags); \
|
|
|
2045 defvar_magic (lname, &I_hate_C); \
|
|
|
2046 \
|
|
|
2047 *((Lisp_Object *)(offset + (char *)XBUFFER (Vbuffer_local_symbols))) \
|
|
|
2048 = intern (lname); \
|
|
|
2049 } \
|
|
|
2050 } while (0)
|
|
|
2051
|
|
|
2052 #define DEFVAR_BUFFER_LOCAL_MAGIC(lname, field_name, magicfun) \
|
|
|
2053 DEFVAR_BUFFER_LOCAL_1 (lname, field_name, \
|
|
|
2054 SYMVAL_CURRENT_BUFFER_FORWARD, magicfun)
|
|
|
2055 #define DEFVAR_BUFFER_LOCAL(lname, field_name) \
|
|
|
2056 DEFVAR_BUFFER_LOCAL_MAGIC (lname, field_name, 0)
|
|
|
2057 #define DEFVAR_CONST_BUFFER_LOCAL_MAGIC(lname, field_name, magicfun) \
|
|
|
2058 DEFVAR_BUFFER_LOCAL_1 (lname, field_name, \
|
|
|
2059 SYMVAL_CONST_CURRENT_BUFFER_FORWARD, magicfun)
|
|
|
2060 #define DEFVAR_CONST_BUFFER_LOCAL(lname, field_name) \
|
|
|
2061 DEFVAR_CONST_BUFFER_LOCAL_MAGIC (lname, field_name, 0)
|
|
|
2062
|
|
|
2063 #define DEFVAR_BUFFER_DEFAULTS_MAGIC(lname, field_name, magicfun) \
|
|
|
2064 DEFVAR_SYMVAL_FWD (lname, &(buffer_local_flags.field_name), \
|
|
|
2065 SYMVAL_DEFAULT_BUFFER_FORWARD, magicfun)
|
|
|
2066 #define DEFVAR_BUFFER_DEFAULTS(lname, field_name) \
|
|
|
2067 DEFVAR_BUFFER_DEFAULTS_MAGIC (lname, field_name, 0)
|
|
|
2068
|
|
|
2069 static void
|
|
|
2070 nuke_all_buffer_slots (struct buffer *b, Lisp_Object zap)
|
|
|
2071 {
|
|
|
2072 zero_lcrecord (b);
|
|
|
2073
|
|
|
2074 b->extent_info = Qnil;
|
|
|
2075 b->indirect_children = Qnil;
|
|
|
2076 b->own_text.line_number_cache = Qnil;
|
|
|
2077
|
|
|
2078 #define MARKED_SLOT(x) b->x = zap
|
|
|
2079 #include "bufslots.h"
|
|
|
2080 #undef MARKED_SLOT
|
|
|
2081 }
|
|
|
2082
|
|
|
2083 static void
|
|
|
2084 common_init_complex_vars_of_buffer (void)
|
|
|
2085 {
|
|
|
2086 /* Make sure all markable slots in buffer_defaults
|
|
|
2087 are initialized reasonably, so mark_buffer won't choke. */
|
|
|
2088 struct buffer *defs = alloc_lcrecord_type (struct buffer, &lrecord_buffer);
|
|
|
2089 struct buffer *syms = alloc_lcrecord_type (struct buffer, &lrecord_buffer);
|
|
|
2090
|
|
|
2091 staticpro_nodump (&Vbuffer_defaults);
|
|
|
2092 staticpro_nodump (&Vbuffer_local_symbols);
|
|
|
2093 XSETBUFFER (Vbuffer_defaults, defs);
|
|
|
2094 XSETBUFFER (Vbuffer_local_symbols, syms);
|
|
|
2095
|
|
|
2096 nuke_all_buffer_slots (syms, Qnil);
|
|
|
2097 nuke_all_buffer_slots (defs, Qnil);
|
|
|
2098 defs->text = &defs->own_text;
|
|
|
2099 syms->text = &syms->own_text;
|
|
|
2100
|
|
|
2101 /* Set up the non-nil default values of various buffer slots.
|
|
|
2102 Must do these before making the first buffer. */
|
|
|
2103 defs->major_mode = Qfundamental_mode;
|
|
|
2104 defs->mode_name = QSFundamental;
|
|
|
2105 defs->abbrev_table = Qnil; /* real default setup by Lisp code */
|
|
|
2106
|
|
|
2107 defs->downcase_table = Vascii_downcase_table;
|
|
|
2108 defs->upcase_table = Vascii_upcase_table;
|
|
|
2109 defs->case_canon_table = Vascii_canon_table;
|
|
|
2110 defs->case_eqv_table = Vascii_eqv_table;
|
|
|
2111 #ifdef MULE
|
|
|
2112 defs->mirror_downcase_table = Vmirror_ascii_downcase_table;
|
|
|
2113 defs->mirror_upcase_table = Vmirror_ascii_upcase_table;
|
|
|
2114 defs->mirror_case_canon_table = Vmirror_ascii_canon_table;
|
|
|
2115 defs->mirror_case_eqv_table = Vmirror_ascii_eqv_table;
|
|
|
2116
|
|
|
2117 defs->category_table = Vstandard_category_table;
|
|
|
2118 #endif /* MULE */
|
|
|
2119 defs->syntax_table = Vstandard_syntax_table;
|
|
|
2120 defs->mirror_syntax_table =
|
|
|
2121 XCHAR_TABLE (Vstandard_syntax_table)->mirror_table;
|
|
|
2122 defs->modeline_format = build_string ("%-"); /* reset in loaddefs.el */
|
|
|
2123 defs->case_fold_search = Qt;
|
|
|
2124 defs->selective_display_ellipses = Qt;
|
|
|
2125 defs->tab_width = make_int (8);
|
|
|
2126 defs->ctl_arrow = Qt;
|
|
|
2127 defs->fill_column = make_int (70);
|
|
|
2128 defs->left_margin = Qzero;
|
|
|
2129 defs->saved_size = Qzero; /* lisp code wants int-or-nil */
|
|
|
2130 defs->modtime = 0;
|
|
|
2131 defs->auto_save_modified = 0;
|
|
|
2132 defs->auto_save_failure_time = -1;
|
|
|
2133 defs->invisibility_spec = Qt;
|
|
|
2134
|
|
|
2135 defs->indirect_children = Qnil;
|
|
|
2136 syms->indirect_children = Qnil;
|
|
|
2137
|
|
|
2138 {
|
|
|
2139 /* 0 means var is always local. Default used only at creation.
|
|
|
2140 * -1 means var is always local. Default used only at reset and
|
|
|
2141 * creation.
|
|
|
2142 * -2 means there's no lisp variable corresponding to this slot
|
|
|
2143 * and the default is only used at creation.
|
|
|
2144 * -3 means no Lisp variable. Default used only at reset and creation.
|
|
|
2145 * >0 is mask. Var is local if ((buffer->local_var_flags & mask) != 0)
|
|
|
2146 * Otherwise default is used.
|
|
|
2147 */
|
|
|
2148 Lisp_Object always_local_no_default = make_int (0);
|
|
|
2149 Lisp_Object always_local_resettable = make_int (-1);
|
|
|
2150 Lisp_Object resettable = make_int (-3);
|
|
|
2151
|
|
|
2152 /* Assign the local-flags to the slots that have default values.
|
|
|
2153 The local flag is a bit that is used in the buffer
|
|
|
2154 to say that it has its own local value for the slot.
|
|
|
2155 The local flag bits are in the local_var_flags slot of the
|
|
|
2156 buffer. */
|
|
|
2157
|
|
|
2158 nuke_all_buffer_slots (&buffer_local_flags, make_int (-2));
|
|
|
2159 buffer_local_flags.filename = always_local_no_default;
|
|
|
2160 buffer_local_flags.directory = always_local_no_default;
|
|
|
2161 buffer_local_flags.backed_up = always_local_no_default;
|
|
|
2162 buffer_local_flags.saved_size = always_local_no_default;
|
|
|
2163 buffer_local_flags.auto_save_file_name = always_local_no_default;
|
|
|
2164 buffer_local_flags.read_only = always_local_no_default;
|
|
|
2165
|
|
|
2166 buffer_local_flags.major_mode = always_local_resettable;
|
|
|
2167 buffer_local_flags.mode_name = always_local_resettable;
|
|
|
2168 buffer_local_flags.undo_list = always_local_no_default;
|
|
|
2169 #if 0 /* FSFmacs */
|
|
|
2170 buffer_local_flags.mark_active = always_local_resettable;
|
|
|
2171 #endif
|
|
|
2172 buffer_local_flags.point_before_scroll = always_local_resettable;
|
|
|
2173 buffer_local_flags.file_truename = always_local_no_default;
|
|
|
2174 buffer_local_flags.invisibility_spec = always_local_resettable;
|
|
|
2175 buffer_local_flags.file_format = always_local_resettable;
|
|
|
2176 buffer_local_flags.generated_modeline_string = always_local_no_default;
|
|
|
2177
|
|
|
2178 buffer_local_flags.keymap = resettable;
|
|
|
2179 buffer_local_flags.downcase_table = resettable;
|
|
|
2180 buffer_local_flags.upcase_table = resettable;
|
|
|
2181 buffer_local_flags.case_canon_table = resettable;
|
|
|
2182 buffer_local_flags.case_eqv_table = resettable;
|
|
|
2183 buffer_local_flags.syntax_table = resettable;
|
|
|
2184 #ifdef MULE
|
|
|
2185 buffer_local_flags.category_table = resettable;
|
|
|
2186 #endif
|
|
|
2187
|
|
|
2188 buffer_local_flags.modeline_format = make_int (1<<0);
|
|
|
2189 buffer_local_flags.abbrev_mode = make_int (1<<1);
|
|
|
2190 buffer_local_flags.overwrite_mode = make_int (1<<2);
|
|
|
2191 buffer_local_flags.case_fold_search = make_int (1<<3);
|
|
|
2192 buffer_local_flags.auto_fill_function = make_int (1<<4);
|
|
|
2193 buffer_local_flags.selective_display = make_int (1<<5);
|
|
|
2194 buffer_local_flags.selective_display_ellipses = make_int (1<<6);
|
|
|
2195 buffer_local_flags.tab_width = make_int (1<<7);
|
|
|
2196 buffer_local_flags.truncate_lines = make_int (1<<8);
|
|
|
2197 buffer_local_flags.ctl_arrow = make_int (1<<9);
|
|
|
2198 buffer_local_flags.fill_column = make_int (1<<10);
|
|
|
2199 buffer_local_flags.left_margin = make_int (1<<11);
|
|
|
2200 buffer_local_flags.abbrev_table = make_int (1<<12);
|
|
|
2201 #ifdef REGION_CACHE_NEEDS_WORK
|
|
|
2202 buffer_local_flags.cache_long_line_scans = make_int (1<<13);
|
|
|
2203 #endif
|
|
|
2204 #ifdef FILE_CODING
|
|
|
2205 buffer_local_flags.buffer_file_coding_system = make_int (1<<14);
|
|
|
2206 #endif
|
|
|
2207
|
|
|
2208 /* #### Warning: 1<<31 is the largest number currently allowable
|
|
|
2209 due to the XINT() handling of this value. With some
|
|
|
2210 rearrangement you can get 3 more bits. */
|
|
|
2211 }
|
|
|
2212 }
|
|
|
2213
|
|
|
2214 #define BUFFER_SLOTS_SIZE (offsetof (struct buffer, BUFFER_SLOTS_LAST_NAME) - offsetof (struct buffer, BUFFER_SLOTS_FIRST_NAME) + sizeof (Lisp_Object))
|
|
|
2215 #define BUFFER_SLOTS_COUNT (BUFFER_SLOTS_SIZE / sizeof (Lisp_Object))
|
|
|
2216
|
|
|
2217 void
|
|
|
2218 reinit_complex_vars_of_buffer (void)
|
|
|
2219 {
|
|
|
2220 struct buffer *defs, *syms;
|
|
|
2221
|
|
|
2222 common_init_complex_vars_of_buffer ();
|
|
|
2223
|
|
|
2224 defs = XBUFFER (Vbuffer_defaults);
|
|
|
2225 syms = XBUFFER (Vbuffer_local_symbols);
|
|
|
2226 memcpy (&defs->BUFFER_SLOTS_FIRST_NAME,
|
|
|
2227 buffer_defaults_saved_slots,
|
|
|
2228 BUFFER_SLOTS_SIZE);
|
|
|
2229 memcpy (&syms->BUFFER_SLOTS_FIRST_NAME,
|
|
|
2230 buffer_local_symbols_saved_slots,
|
|
|
2231 BUFFER_SLOTS_SIZE);
|
|
|
2232 }
|
|
|
2233
|
|
|
2234
|
|
|
2235 static const struct lrecord_description buffer_slots_description_1[] = {
|
|
|
2236 { XD_LISP_OBJECT, 0, BUFFER_SLOTS_COUNT },
|
|
|
2237 { XD_END }
|
|
|
2238 };
|
|
|
2239
|
|
|
2240 static const struct struct_description buffer_slots_description = {
|
|
|
2241 BUFFER_SLOTS_SIZE,
|
|
|
2242 buffer_slots_description_1
|
|
|
2243 };
|
|
|
2244
|
|
|
2245 void
|
|
|
2246 complex_vars_of_buffer (void)
|
|
|
2247 {
|
|
|
2248 struct buffer *defs, *syms;
|
|
|
2249
|
|
|
2250 common_init_complex_vars_of_buffer ();
|
|
|
2251
|
|
|
2252 defs = XBUFFER (Vbuffer_defaults);
|
|
|
2253 syms = XBUFFER (Vbuffer_local_symbols);
|
|
|
2254 buffer_defaults_saved_slots = &defs->BUFFER_SLOTS_FIRST_NAME;
|
|
|
2255 buffer_local_symbols_saved_slots = &syms->BUFFER_SLOTS_FIRST_NAME;
|
|
|
2256 dumpstruct (&buffer_defaults_saved_slots, &buffer_slots_description);
|
|
|
2257 dumpstruct (&buffer_local_symbols_saved_slots, &buffer_slots_description);
|
|
|
2258
|
|
|
2259 DEFVAR_BUFFER_DEFAULTS ("default-modeline-format", modeline_format /*
|
|
|
2260 Default value of `modeline-format' for buffers that don't override it.
|
|
|
2261 This is the same as (default-value 'modeline-format).
|
|
|
2262 */ );
|
|
|
2263
|
|
|
2264 DEFVAR_BUFFER_DEFAULTS ("default-abbrev-mode", abbrev_mode /*
|
|
|
2265 Default value of `abbrev-mode' for buffers that do not override it.
|
|
|
2266 This is the same as (default-value 'abbrev-mode).
|
|
|
2267 */ );
|
|
|
2268
|
|
|
2269 DEFVAR_BUFFER_DEFAULTS ("default-ctl-arrow", ctl_arrow /*
|
|
|
2270 Default value of `ctl-arrow' for buffers that do not override it.
|
|
|
2271 This is the same as (default-value 'ctl-arrow).
|
|
|
2272 */ );
|
|
|
2273
|
|
|
2274 #if 0 /* #### make this a specifier! */
|
|
|
2275 DEFVAR_BUFFER_DEFAULTS ("default-display-direction", display_direction /*
|
|
|
2276 Default display-direction for buffers that do not override it.
|
|
|
2277 This is the same as (default-value 'display-direction).
|
|
|
2278 Note: This is not yet implemented.
|
|
|
2279 */ );
|
|
|
2280 #endif
|
|
|
2281
|
|
|
2282 DEFVAR_BUFFER_DEFAULTS ("default-truncate-lines", truncate_lines /*
|
|
|
2283 Default value of `truncate-lines' for buffers that do not override it.
|
|
|
2284 This is the same as (default-value 'truncate-lines).
|
|
|
2285 */ );
|
|
|
2286
|
|
|
2287 DEFVAR_BUFFER_DEFAULTS ("default-fill-column", fill_column /*
|
|
|
2288 Default value of `fill-column' for buffers that do not override it.
|
|
|
2289 This is the same as (default-value 'fill-column).
|
|
|
2290 */ );
|
|
|
2291
|
|
|
2292 DEFVAR_BUFFER_DEFAULTS ("default-left-margin", left_margin /*
|
|
|
2293 Default value of `left-margin' for buffers that do not override it.
|
|
|
2294 This is the same as (default-value 'left-margin).
|
|
|
2295 */ );
|
|
|
2296
|
|
|
2297 DEFVAR_BUFFER_DEFAULTS ("default-tab-width", tab_width /*
|
|
|
2298 Default value of `tab-width' for buffers that do not override it.
|
|
|
2299 This is the same as (default-value 'tab-width).
|
|
|
2300 */ );
|
|
|
2301
|
|
|
2302 DEFVAR_BUFFER_DEFAULTS ("default-case-fold-search", case_fold_search /*
|
|
|
2303 Default value of `case-fold-search' for buffers that don't override it.
|
|
|
2304 This is the same as (default-value 'case-fold-search).
|
|
|
2305 */ );
|
|
|
2306
|
|
|
2307 DEFVAR_BUFFER_LOCAL ("modeline-format", modeline_format /*
|
|
|
2308 Template for displaying modeline for current buffer.
|
|
|
2309 Each buffer has its own value of this variable.
|
|
|
2310 Value may be a string, a symbol or a list or cons cell.
|
|
|
2311 For a symbol, its value is used (but it is ignored if t or nil).
|
|
|
2312 A string appearing directly as the value of a symbol is processed verbatim
|
|
|
2313 in that the %-constructs below are not recognized.
|
|
|
2314 For a glyph, it is inserted as is.
|
|
|
2315 For a list whose car is a symbol, the symbol's value is taken,
|
|
|
2316 and if that is non-nil, the cadr of the list is processed recursively.
|
|
|
2317 Otherwise, the caddr of the list (if there is one) is processed.
|
|
|
2318 For a list whose car is a string or list, each element is processed
|
|
|
2319 recursively and the results are effectively concatenated.
|
|
|
2320 For a list whose car is an integer, the cdr of the list is processed
|
|
|
2321 and padded (if the number is positive) or truncated (if negative)
|
|
|
2322 to the width specified by that number.
|
|
|
2323 For a list whose car is an extent, the cdr of the list is processed
|
|
|
2324 normally but the results are displayed using the face of the
|
|
|
2325 extent, and mouse clicks over this section are processed using the
|
|
|
2326 keymap of the extent. (In addition, if the extent has a help-echo
|
|
|
2327 property, that string will be echoed when the mouse moves over this
|
|
|
2328 section.) See `generated-modeline-string' for more information.
|
|
|
2329 For a list whose car is a face, the cdr of the list is processed
|
|
|
2330 normally but the results will be displayed using the face in the car.
|
|
|
2331 For a list whose car is a keymap, the cdr of the list is processed
|
|
|
2332 normally but the keymap will apply for mouse clicks over the results,
|
|
|
2333 in addition to `modeline-map'. Nested keymap specifications are
|
|
|
2334 handled properly.
|
|
|
2335 A string is printed verbatim in the modeline except for %-constructs:
|
|
|
2336 (%-constructs are processed when the string is the entire modeline-format
|
|
|
2337 or when it is found in a cons-cell or a list)
|
|
|
2338 %b -- print buffer name. %c -- print the current column number.
|
|
|
2339 %f -- print visited file name.
|
|
|
2340 %* -- print %, * or hyphen. %+ -- print *, % or hyphen.
|
|
|
2341 % means buffer is read-only and * means it is modified.
|
|
|
2342 For a modified read-only buffer, %* gives % and %+ gives *.
|
|
|
2343 %s -- print process status. %l -- print the current line number.
|
|
|
2344 %S -- print name of selected frame (only meaningful under X Windows).
|
|
|
2345 %p -- print percent of buffer above top of window, or Top, Bot or All.
|
|
|
2346 %P -- print percent of buffer above bottom of window, perhaps plus Top,
|
|
|
2347 or print Bottom or All.
|
|
|
2348 %n -- print Narrow if appropriate.
|
|
|
2349 %C -- under XEmacs/mule, print the mnemonic for `buffer-file-coding-system'.
|
|
|
2350 %[ -- print one [ for each recursive editing level. %] similar.
|
|
|
2351 %% -- print %. %- -- print infinitely many dashes.
|
|
|
2352 Decimal digits after the % specify field width to which to pad.
|
|
|
2353 */ );
|
|
|
2354
|
|
|
2355 DEFVAR_BUFFER_DEFAULTS ("default-major-mode", major_mode /*
|
|
|
2356 *Major mode for new buffers. Defaults to `fundamental-mode'.
|
|
|
2357 nil here means use current buffer's major mode.
|
|
|
2358 */ );
|
|
|
2359
|
|
|
2360 DEFVAR_BUFFER_DEFAULTS ("fundamental-mode-abbrev-table", abbrev_table /*
|
|
|
2361 The abbrev table of mode-specific abbrevs for Fundamental Mode.
|
|
|
2362 */ );
|
|
|
2363
|
|
|
2364 DEFVAR_BUFFER_LOCAL ("major-mode", major_mode /*
|
|
|
2365 Symbol for current buffer's major mode.
|
|
|
2366 */ );
|
|
|
2367
|
|
|
2368 DEFVAR_BUFFER_LOCAL ("mode-name", mode_name /*
|
|
|
2369 Pretty name of current buffer's major mode (a string).
|
|
|
2370 */ );
|
|
|
2371
|
|
|
2372 DEFVAR_BUFFER_LOCAL ("abbrev-mode", abbrev_mode /*
|
|
|
2373 Non-nil turns on automatic expansion of abbrevs as they are inserted.
|
|
|
2374 Automatically becomes buffer-local when set in any fashion.
|
|
|
2375 */ );
|
|
|
2376
|
|
|
2377 DEFVAR_BUFFER_LOCAL ("case-fold-search", case_fold_search /*
|
|
|
2378 *Non-nil if searches should ignore case.
|
|
|
2379 Automatically becomes buffer-local when set in any fashion.
|
|
|
2380
|
|
|
2381 BUG: Under XEmacs/Mule, translations to or from non-ASCII characters
|
|
|
2382 (this includes chars in the range 128 - 255) are ignored by
|
|
|
2383 the string/buffer-searching routines. Thus, `case-fold-search'
|
|
|
2384 will not correctly conflate a-umlaut and A-umlaut even if the
|
|
|
2385 case tables call for this.
|
|
|
2386 */ );
|
|
|
2387
|
|
|
2388 DEFVAR_BUFFER_LOCAL ("fill-column", fill_column /*
|
|
|
2389 *Column beyond which automatic line-wrapping should happen.
|
|
|
2390 Automatically becomes buffer-local when set in any fashion.
|
|
|
2391 */ );
|
|
|
2392
|
|
|
2393 DEFVAR_BUFFER_LOCAL ("left-margin", left_margin /*
|
|
|
2394 *Column for the default indent-line-function to indent to.
|
|
|
2395 Linefeed indents to this column in Fundamental mode.
|
|
|
2396 Automatically becomes buffer-local when set in any fashion.
|
|
|
2397 Do not confuse this with the specifier `left-margin-width';
|
|
|
2398 that controls the size of a margin that is displayed outside
|
|
|
2399 of the text area.
|
|
|
2400 */ );
|
|
|
2401
|
|
|
2402 DEFVAR_BUFFER_LOCAL_MAGIC ("tab-width", tab_width /*
|
|
|
2403 *Distance between tab stops (for display of tab characters), in columns.
|
|
|
2404 Automatically becomes buffer-local when set in any fashion.
|
|
|
2405 */ , redisplay_variable_changed);
|
|
|
2406
|
|
|
2407 DEFVAR_BUFFER_LOCAL_MAGIC ("ctl-arrow", ctl_arrow /*
|
|
|
2408 *Non-nil means display control chars with uparrow.
|
|
|
2409 Nil means use backslash and octal digits.
|
|
|
2410 An integer means characters >= ctl-arrow are assumed to be printable, and
|
|
|
2411 will be displayed as a single glyph.
|
|
|
2412 Any other value is the same as 160 - the code SPC with the high bit on.
|
|
|
2413
|
|
|
2414 The interpretation of this variable is likely to change in the future.
|
|
|
2415
|
|
|
2416 Automatically becomes buffer-local when set in any fashion.
|
|
|
2417 This variable does not apply to characters whose display is specified
|
|
|
2418 in the current display table (if there is one).
|
|
|
2419 */ , redisplay_variable_changed);
|
|
|
2420
|
|
|
2421 #if 0 /* #### Make this a specifier! */
|
|
|
2422 xxDEFVAR_BUFFER_LOCAL ("display-direction", display_direction /*
|
|
|
2423 *Non-nil means lines in the buffer are displayed right to left.
|
|
|
2424 Nil means left to right. (Not yet implemented.)
|
|
|
2425 */ );
|
|
|
2426 #endif /* Not yet implemented */
|
|
|
2427
|
|
|
2428 DEFVAR_BUFFER_LOCAL_MAGIC ("truncate-lines", truncate_lines /*
|
|
|
2429 *Non-nil means do not display continuation lines;
|
|
|
2430 give each line of text one frame line.
|
|
|
2431 Automatically becomes buffer-local when set in any fashion.
|
|
|
2432
|
|
|
2433 Note that this is overridden by the variable
|
|
|
2434 `truncate-partial-width-windows' if that variable is non-nil
|
|
|
2435 and this buffer is not full-frame width.
|
|
|
2436 */ , redisplay_variable_changed);
|
|
|
2437
|
|
|
2438 DEFVAR_BUFFER_LOCAL ("default-directory", directory /*
|
|
|
2439 Name of default directory of current buffer. Should end with slash.
|
|
|
2440 Each buffer has its own value of this variable.
|
|
|
2441 */ );
|
|
|
2442
|
|
|
2443 #ifdef FILE_CODING
|
|
|
2444 DEFVAR_BUFFER_DEFAULTS ("default-buffer-file-coding-system", buffer_file_coding_system /*
|
|
|
2445 Default value of `buffer-file-coding-system' for buffers that do not override it.
|
|
|
2446 This is the same as (default-value 'buffer-file-coding-system).
|
|
|
2447 This value is used both for buffers without associated files and
|
|
|
2448 for buffers whose files do not have any apparent coding system.
|
|
|
2449 See `buffer-file-coding-system'.
|
|
|
2450 */ );
|
|
|
2451
|
|
|
2452 DEFVAR_BUFFER_LOCAL ("buffer-file-coding-system", buffer_file_coding_system /*
|
|
|
2453 *Current coding system for the current buffer.
|
|
|
2454 When the buffer is written out into a file, this coding system will be
|
|
|
2455 used for the encoding. Automatically buffer-local when set in any
|
|
|
2456 fashion. This is normally set automatically when a file is loaded in
|
|
|
2457 based on the determined coding system of the file (assuming that
|
|
|
2458 `buffer-file-coding-system-for-read' is set to `undecided', which
|
|
|
2459 calls for automatic determination of the file's coding system).
|
|
|
2460 Normally the modeline indicates the current file coding system using
|
|
|
2461 its mnemonic abbreviation.
|
|
|
2462
|
|
|
2463 The default value for this variable (which is normally used for
|
|
|
2464 buffers without associated files) is also used when automatic
|
|
|
2465 detection of a file's encoding is called for and there was no
|
|
|
2466 discernible encoding in the file (i.e. it was entirely or almost
|
|
|
2467 entirely ASCII). The default value should generally *not* be set to
|
|
|
2468 nil (equivalent to `no-conversion'), because if extended characters
|
|
|
2469 are ever inserted into the buffer, they will be lost when the file is
|
|
|
2470 written out. A good choice is `iso-2022-8' (the simple ISO 2022 8-bit
|
|
|
2471 encoding), which will write out ASCII and Latin-1 characters in the
|
|
|
2472 standard (and highly portable) fashion and use standard escape
|
|
|
2473 sequences for other charsets. Another reasonable choice is
|
|
|
2474 `escape-quoted', which is equivalent to `iso-2022-8' but prefixes
|
|
|
2475 certain control characters with ESC to make sure they are not
|
|
|
2476 interpreted as escape sequences when read in. This latter coding
|
|
|
2477 system results in more "correct" output in the presence of control
|
|
|
2478 characters in the buffer, in the sense that when read in again using
|
|
|
2479 the same coding system, the result will virtually always match the
|
|
|
2480 original contents of the buffer, which is not the case with
|
|
|
2481 `iso-2022-8'; but the output is less portable when dealing with binary
|
|
|
2482 data -- there may be stray ESC characters when the file is read by
|
|
|
2483 another program.
|
|
|
2484
|
|
|
2485 `buffer-file-coding-system' does *not* control the coding system used when
|
|
|
2486 a file is read in. Use the variables `buffer-file-coding-system-for-read'
|
|
|
2487 and `buffer-file-coding-system-alist' for that. From a Lisp program, if
|
|
|
2488 you wish to unilaterally specify the coding system used for one
|
|
|
2489 particular operation, you should bind the variable
|
|
|
2490 `coding-system-for-read' rather than changing the other two
|
|
|
2491 variables just mentioned, which are intended to be used for
|
|
|
2492 global environment specification.
|
|
|
2493 */ );
|
|
|
2494 #endif /* FILE_CODING */
|
|
|
2495
|
|
|
2496 DEFVAR_BUFFER_LOCAL ("auto-fill-function", auto_fill_function /*
|
|
|
2497 Function called (if non-nil) to perform auto-fill.
|
|
|
2498 It is called after self-inserting a space at a column beyond `fill-column'.
|
|
|
2499 Each buffer has its own value of this variable.
|
|
|
2500 NOTE: This variable is not an ordinary hook;
|
|
|
2501 It may not be a list of functions.
|
|
|
2502 */ );
|
|
|
2503
|
|
|
2504 DEFVAR_BUFFER_LOCAL ("buffer-file-name", filename /*
|
|
|
2505 Name of file visited in current buffer, or nil if not visiting a file.
|
|
|
2506 Each buffer has its own value of this variable.
|
|
|
2507 */ );
|
|
|
2508
|
|
|
2509 #if 0 /* FSFmacs */
|
|
|
2510 /*
|
|
|
2511 Abbreviated truename of file visited in current buffer, or nil if none.
|
|
|
2512 The truename of a file is calculated by `file-truename'
|
|
|
2513 and then abbreviated with `abbreviate-file-name'.
|
|
|
2514 Each buffer has its own value of this variable.
|
|
|
2515 */
|
|
|
2516 #endif /* FSFmacs */
|
|
|
2517
|
|
|
2518 DEFVAR_BUFFER_LOCAL ("buffer-file-truename", file_truename /*
|
|
|
2519 The real name of the file visited in the current buffer,
|
|
|
2520 or nil if not visiting a file. This is the result of passing
|
|
|
2521 buffer-file-name to the `file-truename' function. Every buffer has
|
|
|
2522 its own value of this variable. This variable is automatically
|
|
|
2523 maintained by the functions that change the file name associated
|
|
|
2524 with a buffer.
|
|
|
2525 */ );
|
|
|
2526
|
|
|
2527 DEFVAR_BUFFER_LOCAL ("buffer-auto-save-file-name", auto_save_file_name /*
|
|
|
2528 Name of file for auto-saving current buffer,
|
|
|
2529 or nil if buffer should not be auto-saved.
|
|
|
2530 Each buffer has its own value of this variable.
|
|
|
2531 */ );
|
|
|
2532
|
|
|
2533 DEFVAR_BUFFER_LOCAL ("buffer-read-only", read_only /*
|
|
|
2534 Non-nil if this buffer is read-only.
|
|
|
2535 Each buffer has its own value of this variable.
|
|
|
2536 */ );
|
|
|
2537
|
|
|
2538 DEFVAR_BUFFER_LOCAL ("buffer-backed-up", backed_up /*
|
|
|
2539 Non-nil if this buffer's file has been backed up.
|
|
|
2540 Backing up is done before the first time the file is saved.
|
|
|
2541 Each buffer has its own value of this variable.
|
|
|
2542 */ );
|
|
|
2543
|
|
|
2544 DEFVAR_BUFFER_LOCAL ("buffer-saved-size", saved_size /*
|
|
|
2545 Length of current buffer when last read in, saved or auto-saved.
|
|
|
2546 0 initially.
|
|
|
2547 Each buffer has its own value of this variable.
|
|
|
2548 */ );
|
|
|
2549
|
|
|
2550 DEFVAR_BUFFER_LOCAL_MAGIC ("selective-display", selective_display /*
|
|
|
2551 Non-nil enables selective display:
|
|
|
2552 Integer N as value means display only lines
|
|
|
2553 that start with less than n columns of space.
|
|
|
2554 A value of t means, after a ^M, all the rest of the line is invisible.
|
|
|
2555 Then ^M's in the file are written into files as newlines.
|
|
|
2556
|
|
|
2557 Automatically becomes buffer-local when set in any fashion.
|
|
|
2558 */, redisplay_variable_changed);
|
|
|
2559
|
|
|
2560 #ifndef old
|
|
|
2561 DEFVAR_BUFFER_LOCAL_MAGIC ("selective-display-ellipses",
|
|
|
2562 selective_display_ellipses /*
|
|
|
2563 t means display ... on previous line when a line is invisible.
|
|
|
2564 Automatically becomes buffer-local when set in any fashion.
|
|
|
2565 */, redisplay_variable_changed);
|
|
|
2566 #endif
|
|
|
2567
|
|
|
2568 DEFVAR_BUFFER_LOCAL ("local-abbrev-table", abbrev_table /*
|
|
|
2569 Local (mode-specific) abbrev table of current buffer.
|
|
|
2570 */ );
|
|
|
2571
|
|
|
2572 DEFVAR_BUFFER_LOCAL ("overwrite-mode", overwrite_mode /*
|
|
|
2573 Non-nil if self-insertion should replace existing text.
|
|
|
2574 The value should be one of `overwrite-mode-textual',
|
|
|
2575 `overwrite-mode-binary', or nil.
|
|
|
2576 If it is `overwrite-mode-textual', self-insertion still
|
|
|
2577 inserts at the end of a line, and inserts when point is before a tab,
|
|
|
2578 until the tab is filled in.
|
|
|
2579 If `overwrite-mode-binary', self-insertion replaces newlines and tabs too.
|
|
|
2580 Automatically becomes buffer-local when set in any fashion.
|
|
|
2581
|
|
|
2582 Normally, you shouldn't modify this variable by hand, but use the functions
|
|
|
2583 `overwrite-mode' and `binary-overwrite-mode' instead. However, you can
|
|
|
2584 customize the default value from the options menu.
|
|
|
2585 */ );
|
|
|
2586
|
|
|
2587 #if 0 /* FSFmacs */
|
|
|
2588 /* Adds the following to the doc string for buffer-undo-list:
|
|
|
2589
|
|
|
2590 An entry (nil PROPERTY VALUE BEG . END) indicates that a text property
|
|
|
2591 was modified between BEG and END. PROPERTY is the property name,
|
|
|
2592 and VALUE is the old value.
|
|
|
2593 */
|
|
|
2594 #endif /* FSFmacs */
|
|
|
2595
|
|
|
2596 DEFVAR_BUFFER_LOCAL ("buffer-undo-list", undo_list /*
|
|
|
2597 List of undo entries in current buffer.
|
|
|
2598 Recent changes come first; older changes follow newer.
|
|
|
2599
|
|
|
2600 An entry (BEG . END) represents an insertion which begins at
|
|
|
2601 position BEG and ends at position END.
|
|
|
2602
|
|
|
2603 An entry (TEXT . POSITION) represents the deletion of the string TEXT
|
|
|
2604 from (abs POSITION). If POSITION is positive, point was at the front
|
|
|
2605 of the text being deleted; if negative, point was at the end.
|
|
|
2606
|
|
|
2607 An entry (t HIGH . LOW) indicates that the buffer previously had
|
|
|
2608 "unmodified" status. HIGH and LOW are the high and low 16-bit portions
|
|
|
2609 of the visited file's modification time, as of that time. If the
|
|
|
2610 modification time of the most recent save is different, this entry is
|
|
|
2611 obsolete.
|
|
|
2612
|
|
|
2613 An entry of the form EXTENT indicates that EXTENT was attached in
|
|
|
2614 the buffer. Undoing an entry of this form detaches EXTENT.
|
|
|
2615
|
|
|
2616 An entry of the form (EXTENT START END) indicates that EXTENT was
|
|
|
2617 detached from the buffer. Undoing an entry of this form attaches
|
|
|
2618 EXTENT from START to END.
|
|
|
2619
|
|
|
2620 An entry of the form POSITION indicates that point was at the buffer
|
|
|
2621 location given by the integer. Undoing an entry of this form places
|
|
|
2622 point at POSITION.
|
|
|
2623
|
|
|
2624 nil marks undo boundaries. The undo command treats the changes
|
|
|
2625 between two undo boundaries as a single step to be undone.
|
|
|
2626
|
|
|
2627 If the value of the variable is t, undo information is not recorded.
|
|
|
2628 */ );
|
|
|
2629
|
|
|
2630 #if 0 /* FSFmacs */
|
|
|
2631 xxDEFVAR_BUFFER_LOCAL ("mark-active", mark_active /*
|
|
|
2632 Non-nil means the mark and region are currently active in this buffer.
|
|
|
2633 Automatically local in all buffers.
|
|
|
2634 */ );
|
|
|
2635 #endif /* FSFmacs */
|
|
|
2636
|
|
|
2637 #ifdef REGION_CACHE_NEEDS_WORK
|
|
|
2638 xxDEFVAR_BUFFER_LOCAL ("cache-long-line-scans", cache_long_line_scans /*
|
|
|
2639 Non-nil means that Emacs should use caches to handle long lines more quickly.
|
|
|
2640 This variable is buffer-local, in all buffers.
|
|
|
2641
|
|
|
2642 Normally, the line-motion functions work by scanning the buffer for
|
|
|
2643 newlines. Columnar operations (like move-to-column and
|
|
|
2644 compute-motion) also work by scanning the buffer, summing character
|
|
|
2645 widths as they go. This works well for ordinary text, but if the
|
|
|
2646 buffer's lines are very long (say, more than 500 characters), these
|
|
|
2647 motion functions will take longer to execute. Emacs may also take
|
|
|
2648 longer to update the display.
|
|
|
2649
|
|
|
2650 If cache-long-line-scans is non-nil, these motion functions cache the
|
|
|
2651 results of their scans, and consult the cache to avoid rescanning
|
|
|
2652 regions of the buffer until the text is modified. The caches are most
|
|
|
2653 beneficial when they prevent the most searching---that is, when the
|
|
|
2654 buffer contains long lines and large regions of characters with the
|
|
|
2655 same, fixed screen width.
|
|
|
2656
|
|
|
2657 When cache-long-line-scans is non-nil, processing short lines will
|
|
|
2658 become slightly slower (because of the overhead of consulting the
|
|
|
2659 cache), and the caches will use memory roughly proportional to the
|
|
|
2660 number of newlines and characters whose screen width varies.
|
|
|
2661
|
|
|
2662 The caches require no explicit maintenance; their accuracy is
|
|
|
2663 maintained internally by the Emacs primitives. Enabling or disabling
|
|
|
2664 the cache should not affect the behavior of any of the motion
|
|
|
2665 functions; it should only affect their performance.
|
|
|
2666 */ );
|
|
|
2667 #endif /* REGION_CACHE_NEEDS_WORK */
|
|
|
2668
|
|
|
2669 DEFVAR_BUFFER_LOCAL ("point-before-scroll", point_before_scroll /*
|
|
|
2670 Value of point before the last series of scroll operations, or nil.
|
|
|
2671 */ );
|
|
|
2672
|
|
|
2673 DEFVAR_BUFFER_LOCAL ("buffer-file-format", file_format /*
|
|
|
2674 List of formats to use when saving this buffer.
|
|
|
2675 Formats are defined by `format-alist'. This variable is
|
|
|
2676 set when a file is visited. Automatically local in all buffers.
|
|
|
2677 */ );
|
|
|
2678
|
|
|
2679 DEFVAR_BUFFER_LOCAL_MAGIC ("buffer-invisibility-spec", invisibility_spec /*
|
|
|
2680 Invisibility spec of this buffer.
|
|
|
2681 The default is t, which means that text is invisible
|
|
|
2682 if it has (or is covered by an extent with) a non-nil `invisible' property.
|
|
|
2683 If the value is a list, a text character is invisible if its `invisible'
|
|
|
2684 property is an element in that list.
|
|
|
2685 If an element is a cons cell of the form (PROP . ELLIPSIS),
|
|
|
2686 then characters with property value PROP are invisible,
|
|
|
2687 and they have an ellipsis as well if ELLIPSIS is non-nil.
|
|
|
2688 Note that the actual characters used for the ellipsis are controllable
|
|
|
2689 using `invisible-text-glyph', and default to "...".
|
|
|
2690 */, redisplay_variable_changed);
|
|
|
2691
|
|
|
2692 DEFVAR_CONST_BUFFER_LOCAL ("generated-modeline-string",
|
|
|
2693 generated_modeline_string /*
|
|
|
2694 String of characters in this buffer's modeline as of the last redisplay.
|
|
|
2695 Each time the modeline is recomputed, the resulting characters are
|
|
|
2696 stored in this string, which is resized as necessary. You may not
|
|
|
2697 set this variable, and modifying this string will not change the
|
|
|
2698 modeline; you have to change `modeline-format' if you want that.
|
|
|
2699
|
|
|
2700 For each extent in `modeline-format' that is encountered when
|
|
|
2701 processing the modeline, a corresponding extent is placed in
|
|
|
2702 `generated-modeline-string' and covers the text over which the
|
|
|
2703 extent in `modeline-format' applies. The extent in
|
|
|
2704 `generated-modeline-string' is made a child of the extent in
|
|
|
2705 `modeline-format', which means that it inherits all properties from
|
|
|
2706 that extent. Note that the extents in `generated-modeline-string'
|
|
|
2707 are managed automatically. You should not explicitly put any extents
|
|
|
2708 in `generated-modeline-string'; if you do, they will disappear the
|
|
|
2709 next time the modeline is processed.
|
|
|
2710
|
|
|
2711 For extents in `modeline-format', the following properties are currently
|
|
|
2712 handled:
|
|
|
2713
|
|
|
2714 `face'
|
|
|
2715 Affects the face of the modeline text. Currently, faces do
|
|
|
2716 not merge properly; only the most recently encountered face
|
|
|
2717 is used. This is a bug.
|
|
|
2718
|
|
|
2719 `keymap'
|
|
|
2720 Affects the disposition of button events over the modeline
|
|
|
2721 text. Multiple applicable keymaps *are* handled properly,
|
|
|
2722 and `modeline-map' still applies to any events that don't
|
|
|
2723 have bindings in extent-specific keymaps.
|
|
|
2724
|
|
|
2725 `help-echo'
|
|
|
2726 If a string, causes the string to be displayed when the mouse
|
|
|
2727 moves over the text.
|
|
|
2728 */ );
|
|
|
2729
|
|
|
2730 /* Check for DEFVAR_BUFFER_LOCAL without initializing the corresponding
|
|
|
2731 slot of buffer_local_flags and vice-versa. Must be done after all
|
|
|
2732 DEFVAR_BUFFER_LOCAL() calls. */
|
|
|
2733 #define MARKED_SLOT(slot) \
|
|
|
2734 if ((XINT (buffer_local_flags.slot) != -2 && \
|
|
|
2735 XINT (buffer_local_flags.slot) != -3) \
|
|
|
2736 != !(NILP (XBUFFER (Vbuffer_local_symbols)->slot))) \
|
|
|
2737 abort ()
|
|
|
2738 #include "bufslots.h"
|
|
|
2739 #undef MARKED_SLOT
|
|
|
2740
|
|
|
2741 {
|
|
|
2742 Lisp_Object scratch = Fget_buffer_create (QSscratch);
|
|
|
2743 Fset_buffer (scratch);
|
|
|
2744 /* Want no undo records for *scratch* until after Emacs is dumped */
|
|
|
2745 Fbuffer_disable_undo (scratch);
|
|
|
2746 }
|
|
|
2747 }
|
|
|
2748
|
|
|
2749 /* Is PWD another name for `.' ? */
|
|
|
2750 static int
|
|
|
2751 directory_is_current_directory (char *pwd)
|
|
|
2752 {
|
|
|
2753 Bufbyte *pwd_internal;
|
|
|
2754 struct stat dotstat, pwdstat;
|
|
|
2755
|
|
|
2756 GET_C_CHARPTR_INT_FILENAME_DATA_ALLOCA (pwd, pwd_internal);
|
|
|
2757
|
|
|
2758 return (IS_DIRECTORY_SEP (*pwd_internal)
|
|
|
2759 && stat ((char *) pwd_internal, &pwdstat) == 0
|
|
|
2760 && stat (".", &dotstat) == 0
|
|
|
2761 && dotstat.st_ino == pwdstat.st_ino
|
|
|
2762 && dotstat.st_dev == pwdstat.st_dev
|
|
|
2763 && (int) strlen ((char *) pwd_internal) < MAXPATHLEN);
|
|
|
2764 }
|
|
|
2765
|
|
|
2766 void
|
|
|
2767 init_initial_directory (void)
|
|
|
2768 {
|
|
|
2769 /* This function can GC */
|
|
|
2770
|
|
|
2771 char *pwd;
|
|
|
2772
|
|
|
2773 initial_directory[0] = 0;
|
|
|
2774
|
|
|
2775 /* If PWD is accurate, use it instead of calling getcwd. This is faster
|
|
|
2776 when PWD is right, and may avoid a fatal error. */
|
|
|
2777 if ((pwd = getenv ("PWD")) != NULL
|
|
|
2778 && directory_is_current_directory (pwd))
|
|
|
2779 strcpy (initial_directory, pwd);
|
|
|
2780 else if (getcwd (initial_directory, MAXPATHLEN) == NULL)
|
|
|
2781 fatal ("`getcwd' failed: %s\n", strerror (errno));
|
|
|
2782
|
|
|
2783 /* Make sure pwd is DIRECTORY_SEP-terminated.
|
|
|
2784 Maybe this should really use some standard subroutine
|
|
|
2785 whose definition is filename syntax dependent. */
|
|
|
2786 {
|
|
|
2787 int len = strlen (initial_directory);
|
|
|
2788
|
|
|
2789 if (! IS_DIRECTORY_SEP (initial_directory[len - 1]))
|
|
|
2790 {
|
|
|
2791 initial_directory[len] = DIRECTORY_SEP;
|
|
|
2792 initial_directory[len + 1] = '\0';
|
|
|
2793 }
|
|
|
2794 }
|
|
|
2795
|
|
|
2796 /* XEmacs change: store buffer's default directory
|
|
|
2797 using preferred (i.e. as defined at compile-time)
|
|
|
2798 directory separator. --marcpa */
|
|
|
2799 #ifdef DOS_NT
|
|
|
2800 #define CORRECT_DIR_SEPS(s) \
|
|
|
2801 do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \
|
|
|
2802 else unixtodos_filename (s); \
|
|
|
2803 } while (0)
|
|
|
2804
|
|
|
2805 CORRECT_DIR_SEPS(initial_directory);
|
|
|
2806 #endif
|
|
|
2807 }
|
|
|
2808
|
|
|
2809 void
|
|
|
2810 init_buffer (void)
|
|
|
2811 {
|
|
|
2812 /* This function can GC */
|
|
|
2813
|
|
|
2814 Fset_buffer (Fget_buffer_create (QSscratch));
|
|
|
2815
|
|
|
2816 current_buffer->directory =
|
|
|
2817 build_ext_string (initial_directory, FORMAT_FILENAME);
|
|
|
2818
|
|
|
2819 #if 0 /* FSFmacs */
|
|
|
2820 /* #### is this correct? */
|
|
|
2821 temp = get_minibuffer (0);
|
|
|
2822 XBUFFER (temp)->directory = current_buffer->directory;
|
|
|
2823 #endif /* FSFmacs */
|
|
|
2824 }
|
