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