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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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83 #include "syntax.h"
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84 #include "sysdep.h" /* for getwd */
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85 #include "window.h"
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86
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87 #include "sysfile.h"
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88
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89 struct buffer *current_buffer; /* the current buffer */
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90
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91 /* This structure holds the default values of the buffer-local variables
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92 defined with DEFVAR_BUFFER_LOCAL, that have special slots in each buffer.
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93 The default value occupies the same slot in this structure
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94 as an individual buffer's value occupies in that buffer.
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95 Setting the default value also goes through the alist of buffers
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96 and stores into each buffer that does not say it has a local value. */
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97 Lisp_Object Vbuffer_defaults;
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98
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99 /* This structure marks which slots in a buffer have corresponding
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272
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100 default values in Vbuffer_defaults.
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0
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101 Each such slot has a nonzero value in this structure.
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102 The value has only one nonzero bit.
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103
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104 When a buffer has its own local value for a slot,
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105 the bit for that slot (found in the same slot in this structure)
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106 is turned on in the buffer's local_var_flags slot.
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107
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108 If a slot in this structure is 0, then there is a DEFVAR_BUFFER_LOCAL
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109 for the slot, but there is no default value for it; the corresponding
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272
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110 slot in Vbuffer_defaults is not used except to initialize newly-created
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0
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111 buffers.
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112
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113 If a slot is -1, then there is a DEFVAR_BUFFER_LOCAL for it
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114 as well as a default value which is used to initialize newly-created
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115 buffers and as a reset-value when local-vars are killed.
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116
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183
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117 If a slot is -2, there is no DEFVAR_BUFFER_LOCAL for it.
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0
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118 (The slot is always local, but there's no lisp variable for it.)
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183
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119 The default value is only used to initialize newly-creation buffers.
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120
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0
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121 If a slot is -3, then there is no DEFVAR_BUFFER_LOCAL for it but
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122 there is a default which is used to initialize newly-creation
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272
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123 buffers and as a reset-value when local-vars are killed. */
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0
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124 struct buffer buffer_local_flags;
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125
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288
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126 /* This is the initial (startup) directory, as used for the *scratch* buffer.
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127 We're making this a global to make others aware of the startup directory.
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128 */
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129 char initial_directory[MAXPATHLEN+1];
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130
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0
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131 /* This structure holds the names of symbols whose values may be
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132 buffer-local. It is indexed and accessed in the same way as the above. */
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133 static Lisp_Object Vbuffer_local_symbols;
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134
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135 /* Alist of all buffer names vs the buffers. */
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136 /* This used to be a variable, but is no longer,
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137 to prevent lossage due to user rplac'ing this alist or its elements.
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138 Note that there is a per-frame copy of this as well; the frame slot
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139 and the global variable contain the same data, but possibly in different
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140 orders, so that the buffer ordering can be per-frame.
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141 */
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142 Lisp_Object Vbuffer_alist;
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143
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144 /* Functions to call before and after each text change. */
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145 Lisp_Object Qbefore_change_functions;
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146 Lisp_Object Qafter_change_functions;
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147 Lisp_Object Vbefore_change_functions;
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148 Lisp_Object Vafter_change_functions;
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149
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150 /* #### Obsolete, for compatibility */
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151 Lisp_Object Qbefore_change_function;
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152 Lisp_Object Qafter_change_function;
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153 Lisp_Object Vbefore_change_function;
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154 Lisp_Object Vafter_change_function;
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155
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156 #if 0 /* FSFmacs */
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157 Lisp_Object Vtransient_mark_mode;
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158 #endif
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159
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160 /* t means ignore all read-only text properties.
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161 A list means ignore such a property if its value is a member of the list.
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162 Any non-nil value means ignore buffer-read-only. */
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163 Lisp_Object Vinhibit_read_only;
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164
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165 /* List of functions to call that can query about killing a buffer.
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166 If any of these functions returns nil, we don't kill it. */
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167 Lisp_Object Vkill_buffer_query_functions;
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168
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169 /* Non-nil means delete a buffer's auto-save file when the buffer is saved. */
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146
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170 int delete_auto_save_files;
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0
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171
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172 Lisp_Object Qbuffer_live_p;
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173 Lisp_Object Qbuffer_or_string_p;
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174
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175 /* List of functions to call before changing an unmodified buffer. */
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176 Lisp_Object Vfirst_change_hook;
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177 Lisp_Object Qfirst_change_hook;
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178
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179 Lisp_Object Qfundamental_mode;
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180 Lisp_Object Qmode_class;
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181 Lisp_Object Qpermanent_local;
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182
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183 Lisp_Object Qprotected_field;
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184
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185 Lisp_Object QSFundamental; /* A string "Fundamental" */
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186 Lisp_Object QSscratch; /* "*scratch*" */
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187 Lisp_Object Qdefault_directory;
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188
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189 Lisp_Object Qkill_buffer_hook;
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190 Lisp_Object Qbuffer_file_name, Qbuffer_undo_list;
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191
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192 Lisp_Object Qrename_auto_save_file;
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193
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194 Lisp_Object Qget_file_buffer;
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195 Lisp_Object Qchange_major_mode_hook, Vchange_major_mode_hook;
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196
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197 Lisp_Object Qfind_file_compare_truenames;
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198
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199 Lisp_Object Qswitch_to_buffer;
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200
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201 /* Two thresholds controlling how much undo information to keep. */
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202 int undo_threshold;
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203 int undo_high_threshold;
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204
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205 int find_file_compare_truenames;
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206 int find_file_use_truenames;
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207
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208
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209 static void reset_buffer_local_variables (struct buffer *, int first_time);
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210 static void nuke_all_buffer_slots (struct buffer *b, Lisp_Object zap);
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211
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212 Lisp_Object
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213 make_buffer (struct buffer *buf)
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214 {
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215 Lisp_Object obj;
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216 XSETBUFFER (obj, buf);
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217 return obj;
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218 }
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219
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220 static Lisp_Object
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221 mark_buffer (Lisp_Object obj, void (*markobj) (Lisp_Object))
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222 {
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223 struct buffer *buf = XBUFFER (obj);
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224
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225 /* Truncate undo information. */
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226 buf->undo_list = truncate_undo_list (buf->undo_list,
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227 undo_threshold,
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228 undo_high_threshold);
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229
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230 #define MARKED_SLOT(x) ((markobj) (buf->x));
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231 #include "bufslots.h"
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232 #undef MARKED_SLOT
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233
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234 ((markobj) (buf->extent_info));
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235
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236 /* Don't mark normally through the children slot.
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272
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237 (Actually, in this case, it doesn't matter.) */
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207
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238 if (! EQ (buf->indirect_children, Qnull_pointer))
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239 mark_conses_in_list (buf->indirect_children);
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0
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240
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272
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241 return buf->base_buffer ? make_buffer (buf->base_buffer) : Qnil;
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0
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242 }
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243
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244 static void
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245 print_buffer (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
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246 {
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247 struct buffer *b = XBUFFER (obj);
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248
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183
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249 if (print_readably)
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0
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250 {
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251 if (!BUFFER_LIVE_P (b))
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252 error ("printing unreadable object #<killed buffer>");
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253 else
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183
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254 error ("printing unreadable object #<buffer %s>",
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14
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255 XSTRING_DATA (b->name));
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0
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256 }
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257 else if (!BUFFER_LIVE_P (b))
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258 write_c_string ("#<killed buffer>", printcharfun);
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259 else if (escapeflag)
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260 {
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261 write_c_string ("#<buffer ", printcharfun);
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262 print_internal (b->name, printcharfun, 1);
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263 write_c_string (">", printcharfun);
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264 }
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265 else
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266 {
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267 print_internal (b->name, printcharfun, 0);
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268 }
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269 }
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183
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270
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272
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271 /* We do not need a finalize method to handle a buffer's children list
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272 because all buffers have `kill-buffer' applied to them before
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273 they disappear, and the children removal happens then. */
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274 DEFINE_LRECORD_IMPLEMENTATION ("buffer", buffer,
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275 mark_buffer, print_buffer, 0, 0, 0,
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276 struct buffer);
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0
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277
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20
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278 DEFUN ("bufferp", Fbufferp, 1, 1, 0, /*
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272
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279 Return t if OBJECT is an editor buffer.
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20
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280 */
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281 (object))
|
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0
|
282 {
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272
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283 return BUFFERP (object) ? Qt : Qnil;
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0
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284 }
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285
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20
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286 DEFUN ("buffer-live-p", Fbuffer_live_p, 1, 1, 0, /*
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272
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287 Return t if OBJECT is an editor buffer that has not been deleted.
|
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20
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288 */
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289 (object))
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0
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290 {
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272
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291 return BUFFERP (object) && BUFFER_LIVE_P (XBUFFER (object)) ? Qt : Qnil;
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0
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292 }
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293
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294 static void
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295 nsberror (Lisp_Object spec)
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296 {
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297 if (STRINGP (spec))
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14
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298 error ("No buffer named %s", XSTRING_DATA (spec));
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0
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299 signal_simple_error ("Invalid buffer argument", spec);
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300 }
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301
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20
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302 DEFUN ("buffer-list", Fbuffer_list, 0, 1, 0, /*
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0
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303 Return a list of all existing live buffers.
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304 The order is specific to the selected frame; if the optional FRAME
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305 argument is provided, the ordering for that frame is returned instead.
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306 If the FRAME argument is t, then the global (non-frame) ordering is
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307 returned instead.
|
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20
|
308 */
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309 (frame))
|
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0
|
310 {
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311 Lisp_Object list;
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312 if (EQ (frame, Qt))
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313 list = Vbuffer_alist;
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314 else
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315 list = decode_frame (frame)->buffer_alist;
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316 return Fmapcar (Qcdr, list);
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317 }
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318
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319 Lisp_Object
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320 get_buffer (Lisp_Object name, int error_if_deleted_or_does_not_exist)
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321 {
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322 if (BUFFERP (name))
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323 {
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|
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324 if (!BUFFER_LIVE_P (XBUFFER (name)))
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|
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325 {
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|
|
326 if (error_if_deleted_or_does_not_exist)
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327 nsberror (name);
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183
|
328 return Qnil;
|
|
0
|
329 }
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|
|
330 return name;
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|
|
331 }
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|
|
332 else
|
|
|
333 {
|
|
272
|
334 Lisp_Object buf;
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0
|
335 struct gcpro gcpro1;
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|
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336
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|
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337 CHECK_STRING (name);
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338 name = LISP_GETTEXT (name); /* I18N3 */
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|
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339 GCPRO1 (name);
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|
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340 buf = Fcdr (Fassoc (name, Vbuffer_alist));
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341 UNGCPRO;
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|
|
342 if (NILP (buf) && error_if_deleted_or_does_not_exist)
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|
|
343 nsberror (name);
|
|
183
|
344 return buf;
|
|
0
|
345 }
|
|
|
346 }
|
|
|
347
|
|
|
348 struct buffer *
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|
|
349 decode_buffer (Lisp_Object buffer, int allow_string)
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|
|
350 {
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|
|
351 if (NILP (buffer))
|
|
183
|
352 return current_buffer;
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|
|
353
|
|
|
354 if (allow_string && STRINGP (buffer))
|
|
|
355 return XBUFFER (get_buffer (buffer, 1));
|
|
0
|
356
|
|
|
357 CHECK_LIVE_BUFFER (buffer);
|
|
|
358 return XBUFFER (buffer);
|
|
|
359 }
|
|
|
360
|
|
20
|
361 DEFUN ("decode-buffer", Fdecode_buffer, 1, 1, 0, /*
|
|
0
|
362 Validate BUFFER or if BUFFER is nil, return the current buffer.
|
|
|
363 If BUFFER is a valid buffer or a string representing a valid buffer,
|
|
|
364 the corresponding buffer object will be returned. Otherwise an error
|
|
|
365 will be signaled.
|
|
20
|
366 */
|
|
|
367 (buffer))
|
|
0
|
368 {
|
|
|
369 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
370 XSETBUFFER (buffer, b);
|
|
|
371 return buffer;
|
|
|
372 }
|
|
|
373
|
|
|
374 #if 0 /* FSFmacs */
|
|
|
375 /* bleagh!!! */
|
|
|
376 /* Like Fassoc, but use Fstring_equal to compare
|
|
|
377 (which ignores text properties),
|
|
|
378 and don't ever QUIT. */
|
|
|
379
|
|
|
380 static Lisp_Object
|
|
203
|
381 assoc_ignore_text_properties (REGISTER Lisp_Object key, Lisp_Object list)
|
|
0
|
382 {
|
|
203
|
383 REGISTER Lisp_Object tail;
|
|
0
|
384 for (tail = list; !NILP (tail); tail = Fcdr (tail))
|
|
|
385 {
|
|
203
|
386 REGISTER Lisp_Object elt, tem;
|
|
0
|
387 elt = Fcar (tail);
|
|
|
388 tem = Fstring_equal (Fcar (elt), key);
|
|
|
389 if (!NILP (tem))
|
|
|
390 return elt;
|
|
|
391 }
|
|
|
392 return Qnil;
|
|
|
393 }
|
|
|
394
|
|
183
|
395 #endif /* FSFmacs */
|
|
0
|
396
|
|
20
|
397 DEFUN ("get-buffer", Fget_buffer, 1, 1, 0, /*
|
|
0
|
398 Return the buffer named NAME (a string).
|
|
|
399 If there is no live buffer named NAME, return nil.
|
|
|
400 NAME may also be a buffer; if so, the value is that buffer.
|
|
20
|
401 */
|
|
|
402 (name))
|
|
0
|
403 {
|
|
|
404 #ifdef I18N3
|
|
|
405 /* #### Doc string should indicate that the buffer name will get
|
|
|
406 translated. */
|
|
|
407 #endif
|
|
|
408
|
|
|
409 /* #### This might return a dead buffer. This is gross. This is
|
|
|
410 called FSF compatibility. */
|
|
|
411 if (BUFFERP (name))
|
|
|
412 return name;
|
|
183
|
413 return get_buffer (name, 0);
|
|
0
|
414 /* FSFmacs 19.29 calls assoc_ignore_text_properties() here.
|
|
|
415 Bleagh!! */
|
|
|
416 }
|
|
|
417
|
|
|
418
|
|
20
|
419 DEFUN ("get-file-buffer", Fget_file_buffer, 1, 1, 0, /*
|
|
0
|
420 Return the buffer visiting file FILENAME (a string).
|
|
|
421 The buffer's `buffer-file-name' must match exactly the expansion of FILENAME.
|
|
|
422 If there is no such live buffer, return nil.
|
|
|
423
|
|
|
424 Normally, the comparison is done by canonicalizing FILENAME (using
|
|
|
425 `expand-file-name') and comparing that to the value of `buffer-file-name'
|
|
|
426 for each existing buffer. However, If `find-file-compare-truenames' is
|
|
|
427 non-nil, FILENAME will be converted to its truename and the search will be
|
|
|
428 done on each buffer's value of `buffer-file-truename' instead of
|
|
|
429 `buffer-file-name'. Otherwise, if `find-file-use-truenames' is non-nil,
|
|
|
430 FILENAME will be converted to its truename and used for searching, but
|
|
|
431 the search will still be done on `buffer-file-name'.
|
|
20
|
432 */
|
|
|
433 (filename))
|
|
0
|
434 {
|
|
371
|
435 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
436 REGISTER Lisp_Object tail, buf, tem;
|
|
|
437 struct gcpro gcpro1;
|
|
|
438
|
|
|
439 #ifdef I18N3
|
|
|
440 /* DO NOT translate the filename. */
|
|
|
441 #endif
|
|
|
442 GCPRO1 (filename);
|
|
|
443 CHECK_STRING (filename);
|
|
|
444 filename = Fexpand_file_name (filename, Qnil);
|
|
|
445 {
|
|
|
446 /* If the file name has special constructs in it,
|
|
|
447 call the corresponding file handler. */
|
|
|
448 Lisp_Object handler = Ffind_file_name_handler (filename, Qget_file_buffer);
|
|
|
449 if (!NILP (handler))
|
|
|
450 {
|
|
|
451 UNGCPRO;
|
|
|
452 return call2 (handler, Qget_file_buffer, filename);
|
|
|
453 }
|
|
|
454 }
|
|
|
455 UNGCPRO;
|
|
|
456
|
|
|
457 if (find_file_compare_truenames || find_file_use_truenames)
|
|
|
458 {
|
|
|
459 struct gcpro ngcpro1, ngcpro2, ngcpro3;
|
|
|
460 Lisp_Object fn = Qnil;
|
|
|
461 Lisp_Object dn = Qnil;
|
|
|
462
|
|
|
463 NGCPRO3 (fn, dn, filename);
|
|
|
464 fn = Ffile_truename (filename, Qnil);
|
|
|
465 if (NILP (fn))
|
|
|
466 {
|
|
|
467 dn = Ffile_name_directory (filename);
|
|
|
468 fn = Ffile_truename (dn, Qnil);
|
|
|
469 if (! NILP (fn)) dn = fn;
|
|
371
|
470 fn = Fexpand_file_name (Ffile_name_nondirectory (filename),
|
|
|
471 dn);
|
|
0
|
472 }
|
|
|
473 filename = fn;
|
|
|
474 NUNGCPRO;
|
|
|
475 }
|
|
|
476
|
|
219
|
477 LIST_LOOP (tail, Vbuffer_alist)
|
|
0
|
478 {
|
|
|
479 buf = Fcdr (XCAR (tail));
|
|
|
480 if (!BUFFERP (buf)) continue;
|
|
|
481 if (!STRINGP (XBUFFER (buf)->filename)) continue;
|
|
|
482 tem = Fstring_equal (filename,
|
|
|
483 (find_file_compare_truenames
|
|
|
484 ? XBUFFER (buf)->file_truename
|
|
|
485 : XBUFFER (buf)->filename));
|
|
|
486 if (!NILP (tem))
|
|
|
487 return buf;
|
|
|
488 }
|
|
|
489 return Qnil;
|
|
|
490 }
|
|
|
491
|
|
|
492
|
|
|
493 static void
|
|
|
494 push_buffer_alist (Lisp_Object name, Lisp_Object buf)
|
|
|
495 {
|
|
|
496 Lisp_Object cons = Fcons (name, buf);
|
|
|
497 Lisp_Object frmcons, devcons, concons;
|
|
|
498
|
|
|
499 Vbuffer_alist = nconc2 (Vbuffer_alist, Fcons (cons, Qnil));
|
|
|
500 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons)
|
|
|
501 {
|
|
|
502 struct frame *f;
|
|
|
503 f = XFRAME (XCAR (frmcons));
|
|
|
504 f->buffer_alist = nconc2 (f->buffer_alist, Fcons (cons, Qnil));
|
|
|
505 }
|
|
|
506 }
|
|
|
507
|
|
|
508 static void
|
|
|
509 delete_from_buffer_alist (Lisp_Object buf)
|
|
|
510 {
|
|
|
511 Lisp_Object cons = Frassq (buf, Vbuffer_alist);
|
|
|
512 Lisp_Object frmcons, devcons, concons;
|
|
|
513 if (NILP (cons))
|
|
|
514 return; /* abort() ? */
|
|
|
515 Vbuffer_alist = delq_no_quit (cons, Vbuffer_alist);
|
|
|
516
|
|
|
517 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons)
|
|
|
518 {
|
|
|
519 struct frame *f;
|
|
|
520 f = XFRAME (XCAR (frmcons));
|
|
|
521 f->buffer_alist = delq_no_quit (cons, f->buffer_alist);
|
|
|
522 }
|
|
|
523 }
|
|
|
524
|
|
|
525 Lisp_Object
|
|
|
526 get_truename_buffer (REGISTER Lisp_Object filename)
|
|
|
527 {
|
|
|
528 /* FSFmacs has its own code here and doesn't call get-file-buffer.
|
|
|
529 That's because their equivalent of find-file-compare-truenames
|
|
|
530 (find-file-existing-other-name) isn't looked at in get-file-buffer.
|
|
|
531 This way is more correct. */
|
|
|
532 int count = specpdl_depth ();
|
|
|
533
|
|
|
534 specbind (Qfind_file_compare_truenames, Qt);
|
|
|
535 return unbind_to (count, Fget_file_buffer (filename));
|
|
|
536 }
|
|
|
537
|
|
|
538 static struct buffer *
|
|
|
539 allocate_buffer (void)
|
|
|
540 {
|
|
185
|
541 struct buffer *b = alloc_lcrecord_type (struct buffer, lrecord_buffer);
|
|
0
|
542
|
|
|
543 copy_lcrecord (b, XBUFFER (Vbuffer_defaults));
|
|
|
544
|
|
|
545 return b;
|
|
|
546 }
|
|
|
547
|
|
|
548 static Lisp_Object
|
|
|
549 finish_init_buffer (struct buffer *b, Lisp_Object name)
|
|
|
550 {
|
|
|
551 Lisp_Object buf;
|
|
|
552
|
|
|
553 XSETBUFFER (buf, b);
|
|
|
554
|
|
|
555 name = Fcopy_sequence (name);
|
|
|
556 /* #### This really does not need to be called. We already
|
|
|
557 initialized the buffer-local variables in allocate_buffer().
|
|
|
558 local_var_alist is set to Qnil at the same point, in
|
|
|
559 nuke_all_buffer_slots(). */
|
|
|
560 reset_buffer_local_variables (b, 1);
|
|
|
561 b->directory = ((current_buffer) ? current_buffer->directory : Qnil);
|
|
|
562
|
|
|
563 b->last_window_start = 1;
|
|
|
564
|
|
|
565 b->name = name;
|
|
|
566 if (string_byte (XSTRING (name), 0) != ' ')
|
|
|
567 b->undo_list = Qnil;
|
|
|
568 else
|
|
|
569 b->undo_list = Qt;
|
|
|
570
|
|
|
571 /* initialize the extent list */
|
|
|
572 init_buffer_extents (b);
|
|
|
573
|
|
|
574 /* Put this in the alist of all live buffers. */
|
|
|
575 push_buffer_alist (name, buf);
|
|
|
576
|
|
|
577 init_buffer_markers (b);
|
|
|
578
|
|
|
579 b->generated_modeline_string = Fmake_string (make_int (84), make_int (' '));
|
|
|
580 b->modeline_extent_table = make_lisp_hashtable (20, HASHTABLE_KEY_WEAK,
|
|
|
581 HASHTABLE_EQ);
|
|
|
582
|
|
|
583 return buf;
|
|
|
584 }
|
|
|
585
|
|
20
|
586 DEFUN ("get-buffer-create", Fget_buffer_create, 1, 1, 0, /*
|
|
0
|
587 Return the buffer named NAME, or create such a buffer and return it.
|
|
|
588 A new buffer is created if there is no live buffer named NAME.
|
|
|
589 If NAME starts with a space, the new buffer does not keep undo information.
|
|
|
590 If NAME is a buffer instead of a string, then it is the value returned.
|
|
|
591 The value is never nil.
|
|
20
|
592 */
|
|
|
593 (name))
|
|
0
|
594 {
|
|
|
595 /* This function can GC */
|
|
|
596 Lisp_Object buf;
|
|
|
597 REGISTER struct buffer *b;
|
|
|
598
|
|
|
599 #ifdef I18N3
|
|
|
600 /* #### Doc string should indicate that the buffer name will get
|
|
|
601 translated. */
|
|
|
602 #endif
|
|
|
603
|
|
|
604 name = LISP_GETTEXT (name);
|
|
|
605 buf = Fget_buffer (name);
|
|
|
606 if (!NILP (buf))
|
|
|
607 return buf;
|
|
|
608
|
|
14
|
609 if (XSTRING_LENGTH (name) == 0)
|
|
0
|
610 error ("Empty string for buffer name is not allowed");
|
|
|
611
|
|
|
612 b = allocate_buffer ();
|
|
|
613
|
|
|
614 b->text = &b->own_text;
|
|
|
615 b->base_buffer = 0;
|
|
|
616 b->indirect_children = Qnil;
|
|
|
617 init_buffer_text (b, 0);
|
|
|
618
|
|
|
619 return finish_init_buffer (b, name);
|
|
|
620 }
|
|
|
621
|
|
140
|
622 #if 0 /* #### implement this! Need various changes in insdel.c */
|
|
20
|
623 DEFUN ("make-indirect-buffer", Fmake_indirect_buffer, 2, 2,
|
|
|
624 "bMake indirect buffer (to buffer): \nBName of indirect buffer: ", /*
|
|
0
|
625 Create and return an indirect buffer for buffer BASE, named NAME.
|
|
|
626 BASE should be an existing buffer (or buffer name).
|
|
|
627 NAME should be a string which is not the name of an existing buffer.
|
|
|
628 If BASE is an indirect buffer itself, the base buffer for that buffer
|
|
|
629 is made the base buffer for the newly created buffer. (Thus, there will
|
|
|
630 never be indirect buffers whose base buffers are themselves indirect.)
|
|
20
|
631 */
|
|
|
632 (base_buffer, name))
|
|
0
|
633 {
|
|
|
634 Lisp_Object buf;
|
|
|
635 REGISTER struct buffer *b;
|
|
|
636
|
|
70
|
637 #ifdef I18N3
|
|
|
638 /* #### Doc string should indicate that the buffer name will get
|
|
|
639 translated. */
|
|
|
640 #endif
|
|
|
641
|
|
0
|
642 name = LISP_GETTEXT (name);
|
|
|
643 buf = Fget_buffer (name);
|
|
|
644 if (!NILP (buf))
|
|
14
|
645 error ("Buffer name `%s' is in use", XSTRING_DATA (name));
|
|
0
|
646
|
|
|
647 base_buffer = Fget_buffer (base_buffer);
|
|
|
648 if (NILP (base_buffer))
|
|
14
|
649 error ("No such buffer: `%s'", XSTRING_DATA (XBUFFER (base_buffer)->name));
|
|
|
650
|
|
|
651 if (XSTRING_LENGTH (name) == 0)
|
|
0
|
652 error ("Empty string for buffer name is not allowed");
|
|
|
653
|
|
|
654 b = allocate_buffer ();
|
|
|
655
|
|
|
656 if (XBUFFER (base_buffer)->base_buffer)
|
|
|
657 b->base_buffer = XBUFFER (base_buffer)->base_buffer;
|
|
|
658 else
|
|
|
659 b->base_buffer = XBUFFER (base_buffer);
|
|
|
660
|
|
|
661 /* Use the base buffer's text object. */
|
|
|
662 b->text = b->base_buffer->text;
|
|
|
663 b->indirect_children = Qnil;
|
|
|
664 XSETBUFFER (buf, b);
|
|
|
665 b->base_buffer->indirect_children =
|
|
|
666 Fcons (buf, b->base_buffer->indirect_children);
|
|
|
667 init_buffer_text (b, 1);
|
|
|
668
|
|
|
669 return finish_init_buffer (b, name);
|
|
140
|
670 }
|
|
0
|
671 #endif /* 0 */
|
|
|
672
|
|
239
|
673
|
|
0
|
674
|
|
|
675 static void
|
|
|
676 reset_buffer_local_variables (struct buffer *b, int first_time)
|
|
|
677 {
|
|
|
678 struct buffer *def = XBUFFER (Vbuffer_defaults);
|
|
|
679
|
|
|
680 b->local_var_flags = 0;
|
|
|
681 /* For each slot that has a default value,
|
|
|
682 copy that into the slot. */
|
|
|
683 #define MARKED_SLOT(slot) \
|
|
|
684 { int mask = XINT (buffer_local_flags.slot); \
|
|
|
685 if ((mask > 0 || mask == -1 || mask == -3) \
|
|
|
686 && (first_time \
|
|
|
687 || NILP (Fget (XBUFFER (Vbuffer_local_symbols)->slot, \
|
|
|
688 Qpermanent_local, Qnil)))) \
|
|
|
689 b->slot = def->slot; \
|
|
|
690 }
|
|
|
691 #include "bufslots.h"
|
|
|
692 #undef MARKED_SLOT
|
|
239
|
693 #if 0
|
|
|
694 #define STRING256_P(obj) \
|
|
272
|
695 (STRINGP (obj) && XSTRING_CHAR_LENGTH (obj) == 256)
|
|
239
|
696 /* If the standard case table has been altered and invalidated,
|
|
|
697 fix up its insides first. */
|
|
|
698 if (!(STRING256_P(Vascii_upcase_table) &&
|
|
|
699 STRING256_P(Vascii_canon_table) &&
|
|
|
700 STRING256_P(Vascii_eqv_table)))
|
|
|
701 {
|
|
|
702 Fset_standard_case_table (Vascii_downcase_table);
|
|
|
703 }
|
|
|
704 b->downcase_table = Vascii_downcase_table;
|
|
|
705 b->upcase_table = Vascii_upcase_table;
|
|
|
706 b->case_canon_table = Vascii_canon_table;
|
|
|
707 b->case_eqv_table = Vascii_eqv_table;
|
|
|
708 #ifdef MULE
|
|
|
709 b->mirror_downcase_table = Vmirror_ascii_downcase_table;
|
|
|
710 b->mirror_upcase_table = Vmirror_ascii_upcase_table;
|
|
|
711 b->mirror_case_canon_table = Vmirror_ascii_canon_table;
|
|
|
712 b->mirror_case_eqv_table = Vmirror_ascii_eqv_table;
|
|
|
713 #endif
|
|
|
714 #endif
|
|
0
|
715 }
|
|
|
716
|
|
|
717
|
|
|
718 /* We split this away from generate-new-buffer, because rename-buffer
|
|
|
719 and set-visited-file-name ought to be able to use this to really
|
|
|
720 rename the buffer properly. */
|
|
|
721
|
|
20
|
722 DEFUN ("generate-new-buffer-name", Fgenerate_new_buffer_name, 1, 2, 0, /*
|
|
0
|
723 Return a string that is the name of no existing buffer based on NAME.
|
|
|
724 If there is no live buffer named NAME, then return NAME.
|
|
|
725 Otherwise modify name by appending `<NUMBER>', incrementing NUMBER
|
|
|
726 until an unused name is found, and then return that name.
|
|
|
727 Optional second argument IGNORE specifies a name that is okay to use
|
|
|
728 \(if it is in the sequence to be tried)
|
|
|
729 even if a buffer with that name exists.
|
|
20
|
730 */
|
|
|
731 (name, ignore))
|
|
0
|
732 {
|
|
|
733 REGISTER Lisp_Object gentemp, tem;
|
|
|
734 int count;
|
|
|
735 char number[10];
|
|
|
736
|
|
|
737 CHECK_STRING (name);
|
|
|
738
|
|
|
739 name = LISP_GETTEXT (name);
|
|
|
740 #ifdef I18N3
|
|
|
741 /* #### Doc string should indicate that the buffer name will get
|
|
|
742 translated. */
|
|
|
743 #endif
|
|
|
744
|
|
|
745 tem = Fget_buffer (name);
|
|
|
746 if (NILP (tem))
|
|
183
|
747 return name;
|
|
0
|
748
|
|
|
749 count = 1;
|
|
|
750 while (1)
|
|
|
751 {
|
|
|
752 sprintf (number, "<%d>", ++count);
|
|
|
753 gentemp = concat2 (name, build_string (number));
|
|
|
754 if (!NILP (ignore))
|
|
|
755 {
|
|
|
756 tem = Fstring_equal (gentemp, ignore);
|
|
|
757 if (!NILP (tem))
|
|
|
758 return gentemp;
|
|
|
759 }
|
|
|
760 tem = Fget_buffer (gentemp);
|
|
|
761 if (NILP (tem))
|
|
183
|
762 return gentemp;
|
|
0
|
763 }
|
|
|
764 }
|
|
|
765
|
|
|
766
|
|
20
|
767 DEFUN ("buffer-name", Fbuffer_name, 0, 1, 0, /*
|
|
0
|
768 Return the name of BUFFER, as a string.
|
|
|
769 With no argument or nil as argument, return the name of the current buffer.
|
|
20
|
770 */
|
|
|
771 (buffer))
|
|
0
|
772 {
|
|
|
773 /* For compatibility, we allow a dead buffer here.
|
|
|
774 Earlier versions of Emacs didn't provide buffer-live-p. */
|
|
|
775 if (NILP (buffer))
|
|
|
776 return current_buffer->name;
|
|
|
777 CHECK_BUFFER (buffer);
|
|
|
778 return XBUFFER (buffer)->name;
|
|
|
779 }
|
|
|
780
|
|
20
|
781 DEFUN ("buffer-file-name", Fbuffer_file_name, 0, 1, 0, /*
|
|
0
|
782 Return name of file BUFFER is visiting, or nil if none.
|
|
|
783 No argument or nil as argument means use the current buffer.
|
|
20
|
784 */
|
|
|
785 (buffer))
|
|
0
|
786 {
|
|
|
787 /* For compatibility, we allow a dead buffer here. Yuck! */
|
|
|
788 if (NILP (buffer))
|
|
|
789 return current_buffer->filename;
|
|
|
790 CHECK_BUFFER (buffer);
|
|
|
791 return XBUFFER (buffer)->filename;
|
|
|
792 }
|
|
|
793
|
|
20
|
794 DEFUN ("buffer-base-buffer", Fbuffer_base_buffer, 0, 1, 0, /*
|
|
0
|
795 Return the base buffer of indirect buffer BUFFER.
|
|
|
796 If BUFFER is not indirect, return nil.
|
|
20
|
797 */
|
|
|
798 (buffer))
|
|
0
|
799 {
|
|
|
800 struct buffer *buf = decode_buffer (buffer, 0);
|
|
272
|
801
|
|
|
802 return buf->base_buffer ? make_buffer (buf->base_buffer) : Qnil;
|
|
0
|
803 }
|
|
|
804
|
|
20
|
805 DEFUN ("buffer-indirect-children", Fbuffer_indirect_children, 0, 1, 0, /*
|
|
0
|
806 Return a list of all indirect buffers whose base buffer is BUFFER.
|
|
|
807 If BUFFER is indirect, the return value will always be nil; see
|
|
|
808 `make-indirect-buffer'.
|
|
20
|
809 */
|
|
|
810 (buffer))
|
|
0
|
811 {
|
|
|
812 struct buffer *buf = decode_buffer (buffer, 0);
|
|
|
813
|
|
|
814 return Fcopy_sequence (buf->indirect_children);
|
|
|
815 }
|
|
|
816
|
|
|
817 /* Map MAPFUN over all buffers that share the same text as BUF
|
|
|
818 (this includes BUF). Pass two arguments to MAPFUN: a buffer,
|
|
|
819 and CLOSURE. If any invocation of MAPFUN returns non-zero,
|
|
|
820 halt immediately and return that value. Otherwise, continue
|
|
|
821 the mapping to the end and return 0. */
|
|
|
822
|
|
|
823 int
|
|
|
824 map_over_sharing_buffers (struct buffer *buf,
|
|
|
825 int (*mapfun) (struct buffer *buf, void *closure),
|
|
|
826 void *closure)
|
|
|
827 {
|
|
|
828 int result;
|
|
|
829 Lisp_Object tail;
|
|
|
830
|
|
|
831 if (buf->base_buffer)
|
|
|
832 {
|
|
|
833 buf = buf->base_buffer;
|
|
|
834 assert (!buf->base_buffer);
|
|
|
835 }
|
|
|
836
|
|
|
837 result = (mapfun) (buf, closure);
|
|
|
838 if (result)
|
|
|
839 return result;
|
|
|
840
|
|
|
841 LIST_LOOP (tail, buf->indirect_children)
|
|
|
842 {
|
|
|
843 Lisp_Object buffer = XCAR (tail);
|
|
|
844 result = (mapfun) (XBUFFER (buffer), closure);
|
|
|
845 if (result)
|
|
|
846 return result;
|
|
|
847 }
|
|
|
848
|
|
|
849 return 0;
|
|
|
850 }
|
|
|
851
|
|
20
|
852 DEFUN ("buffer-local-variables", Fbuffer_local_variables, 0, 1, 0, /*
|
|
0
|
853 Return an alist of variables that are buffer-local in BUFFER.
|
|
|
854 Most elements look like (SYMBOL . VALUE), describing one variable.
|
|
|
855 For a symbol that is locally unbound, just the symbol appears in the value.
|
|
|
856 Note that storing new VALUEs in these elements doesn't change the variables.
|
|
|
857 No argument or nil as argument means use current buffer as BUFFER.
|
|
20
|
858 */
|
|
|
859 (buffer))
|
|
0
|
860 {
|
|
|
861 struct buffer *buf = decode_buffer (buffer, 0);
|
|
|
862 Lisp_Object result = Qnil;
|
|
|
863
|
|
|
864 {
|
|
|
865 Lisp_Object tail;
|
|
|
866 for (tail = buf->local_var_alist; CONSP (tail); tail = XCDR (tail))
|
|
|
867 {
|
|
|
868 Lisp_Object elt = XCAR (tail);
|
|
|
869 /* Reference each variable in the alist in buf.
|
|
|
870 If inquiring about the current buffer, this gets the current values,
|
|
|
871 so store them into the alist so the alist is up to date.
|
|
|
872 If inquiring about some other buffer, this swaps out any values
|
|
|
873 for that buffer, making the alist up to date automatically. */
|
|
|
874 Lisp_Object val = find_symbol_value (XCAR (elt));
|
|
|
875 /* Use the current buffer value only if buf is the current buffer. */
|
|
|
876 if (buf != current_buffer)
|
|
|
877 val = XCDR (elt);
|
|
|
878
|
|
|
879 /* If symbol is unbound, put just the symbol in the list. */
|
|
|
880 if (UNBOUNDP (val))
|
|
|
881 result = Fcons (XCAR (elt), result);
|
|
|
882 /* Otherwise, put (symbol . value) in the list. */
|
|
|
883 else
|
|
|
884 result = Fcons (Fcons (XCAR (elt), val), result);
|
|
|
885 }
|
|
|
886 }
|
|
|
887
|
|
|
888 /* Add on all the variables stored in special slots. */
|
|
|
889 {
|
|
|
890 struct buffer *syms = XBUFFER (Vbuffer_local_symbols);
|
|
|
891 #define MARKED_SLOT(slot) \
|
|
|
892 { int mask = XINT (buffer_local_flags.slot); \
|
|
|
893 if (mask == 0 || mask == -1 \
|
|
|
894 || ((mask > 0) && (buf->local_var_flags & mask))) \
|
|
|
895 result = Fcons (Fcons (syms->slot, buf->slot), result); \
|
|
|
896 }
|
|
|
897 #include "bufslots.h"
|
|
|
898 #undef MARKED_SLOT
|
|
|
899 }
|
|
183
|
900 return result;
|
|
0
|
901 }
|
|
|
902
|
|
20
|
903 DEFUN ("buffer-dedicated-frame", Fbuffer_dedicated_frame, 0, 1, 0, /*
|
|
0
|
904 Return the frame dedicated to this BUFFER, or nil if there is none.
|
|
|
905 No argument or nil as argument means use current buffer as BUFFER.
|
|
20
|
906 */
|
|
|
907 (buffer))
|
|
0
|
908 {
|
|
|
909 struct buffer *buf = decode_buffer (buffer, 0);
|
|
|
910
|
|
|
911 /* XEmacs addition: if the frame is dead, silently make it go away. */
|
|
|
912 if (!NILP (buf->dedicated_frame) &&
|
|
|
913 !FRAME_LIVE_P (XFRAME (buf->dedicated_frame)))
|
|
|
914 buf->dedicated_frame = Qnil;
|
|
183
|
915
|
|
0
|
916 return buf->dedicated_frame;
|
|
|
917 }
|
|
|
918
|
|
20
|
919 DEFUN ("set-buffer-dedicated-frame", Fset_buffer_dedicated_frame, 2, 2, 0, /*
|
|
0
|
920 For this BUFFER, set the FRAME dedicated to it.
|
|
|
921 FRAME must be a frame or nil.
|
|
20
|
922 */
|
|
|
923 (buffer, frame))
|
|
0
|
924 {
|
|
|
925 struct buffer *buf = decode_buffer (buffer, 0);
|
|
|
926
|
|
|
927 if (!NILP (frame))
|
|
|
928 CHECK_LIVE_FRAME (frame); /* XEmacs change */
|
|
|
929
|
|
|
930 return buf->dedicated_frame = frame;
|
|
|
931 }
|
|
|
932
|
|
|
933
|
|
|
934
|
|
20
|
935 DEFUN ("buffer-modified-p", Fbuffer_modified_p, 0, 1, 0, /*
|
|
0
|
936 Return t if BUFFER was modified since its file was last read or saved.
|
|
|
937 No argument or nil as argument means use current buffer as BUFFER.
|
|
20
|
938 */
|
|
|
939 (buffer))
|
|
0
|
940 {
|
|
|
941 struct buffer *buf = decode_buffer (buffer, 0);
|
|
|
942
|
|
|
943 return BUF_SAVE_MODIFF (buf) < BUF_MODIFF (buf) ? Qt : Qnil;
|
|
|
944 }
|
|
|
945
|
|
20
|
946 DEFUN ("set-buffer-modified-p", Fset_buffer_modified_p, 1, 2, 0, /*
|
|
0
|
947 Mark BUFFER as modified or unmodified according to FLAG.
|
|
|
948 A non-nil FLAG means mark the buffer modified. No argument or nil
|
|
|
949 as BUFFER means use current buffer.
|
|
20
|
950 */
|
|
|
951 (flag, buffer))
|
|
0
|
952 {
|
|
|
953 /* This function can GC */
|
|
|
954 struct buffer *buf = decode_buffer (buffer, 0);
|
|
|
955
|
|
|
956 #ifdef CLASH_DETECTION
|
|
|
957 /* If buffer becoming modified, lock the file.
|
|
|
958 If buffer becoming unmodified, unlock the file. */
|
|
|
959
|
|
175
|
960 Lisp_Object fn = buf->file_truename;
|
|
0
|
961 if (!NILP (fn))
|
|
|
962 {
|
|
|
963 int already = BUF_SAVE_MODIFF (buf) < BUF_MODIFF (buf);
|
|
|
964 if (already == NILP (flag))
|
|
|
965 {
|
|
|
966 int count = specpdl_depth ();
|
|
|
967 /* lock_file() and unlock_file() currently use current_buffer */
|
|
114
|
968 /* #### - dmoore, what if lock_file or unlock_file kill
|
|
|
969 the current buffer? */
|
|
0
|
970 record_unwind_protect (Fset_buffer, Fcurrent_buffer ());
|
|
|
971 set_buffer_internal (buf);
|
|
|
972 if (!already && !NILP (flag))
|
|
|
973 lock_file (fn);
|
|
|
974 else if (already && NILP (flag))
|
|
|
975 unlock_file (fn);
|
|
|
976 unbind_to (count, Qnil);
|
|
|
977 }
|
|
|
978 }
|
|
167
|
979 #endif /* CLASH_DETECTION */
|
|
0
|
980
|
|
|
981 /* This is often called when the buffer contents are altered but we
|
|
|
982 don't want to treat the changes that way (e.g. selective
|
|
|
983 display). We still need to make sure redisplay realizes that the
|
|
|
984 contents have potentially altered and it needs to do some
|
|
|
985 work. */
|
|
110
|
986 buf = decode_buffer(buffer, 0);
|
|
0
|
987 BUF_MODIFF (buf)++;
|
|
|
988 BUF_SAVE_MODIFF (buf) = NILP (flag) ? BUF_MODIFF (buf) : 0;
|
|
|
989 MARK_MODELINE_CHANGED;
|
|
|
990
|
|
|
991 return flag;
|
|
|
992 }
|
|
|
993
|
|
20
|
994 DEFUN ("buffer-modified-tick", Fbuffer_modified_tick, 0, 1, 0, /*
|
|
0
|
995 Return BUFFER's tick counter, incremented for each change in text.
|
|
|
996 Each buffer has a tick counter which is incremented each time the text in
|
|
|
997 that buffer is changed. It wraps around occasionally.
|
|
|
998 No argument or nil as argument means use current buffer as BUFFER.
|
|
20
|
999 */
|
|
|
1000 (buffer))
|
|
0
|
1001 {
|
|
|
1002 struct buffer *buf = decode_buffer (buffer, 0);
|
|
183
|
1003
|
|
0
|
1004 return make_int (BUF_MODIFF (buf));
|
|
|
1005 }
|
|
|
1006
|
|
20
|
1007 DEFUN ("rename-buffer", Frename_buffer, 1, 2,
|
|
|
1008 "sRename buffer (to new name): \nP", /*
|
|
0
|
1009 Change current buffer's name to NEWNAME (a string).
|
|
|
1010 If second arg UNIQUE is nil or omitted, it is an error if a
|
|
|
1011 buffer named NEWNAME already exists.
|
|
|
1012 If UNIQUE is non-nil, come up with a new name using
|
|
|
1013 `generate-new-buffer-name'.
|
|
|
1014 Interactively, one can set UNIQUE with a prefix argument.
|
|
|
1015 Returns the name we actually gave the buffer.
|
|
|
1016 This does not change the name of the visited file (if any).
|
|
20
|
1017 */
|
|
|
1018 (newname, unique))
|
|
0
|
1019 {
|
|
|
1020 /* This function can GC */
|
|
|
1021 Lisp_Object tem, buf;
|
|
|
1022
|
|
|
1023 #ifdef I18N3
|
|
|
1024 /* #### Doc string should indicate that the buffer name will get
|
|
|
1025 translated. */
|
|
|
1026 #endif
|
|
|
1027 CHECK_STRING (newname);
|
|
|
1028 newname = LISP_GETTEXT (newname);
|
|
|
1029
|
|
14
|
1030 if (XSTRING_LENGTH (newname) == 0)
|
|
0
|
1031 error ("Empty string is invalid as a buffer name");
|
|
|
1032
|
|
|
1033 tem = Fget_buffer (newname);
|
|
|
1034 /* Don't short-circuit if UNIQUE is t. That is a useful way to rename
|
|
|
1035 the buffer automatically so you can create another with the original name.
|
|
|
1036 It makes UNIQUE equivalent to
|
|
|
1037 (rename-buffer (generate-new-buffer-name NEWNAME)). */
|
|
|
1038 /* XEmacs change: added check for nil */
|
|
|
1039 if (NILP (unique) && !NILP (tem) && XBUFFER (tem) == current_buffer)
|
|
|
1040 return current_buffer->name;
|
|
|
1041 if (!NILP (tem))
|
|
|
1042 {
|
|
|
1043 if (!NILP (unique))
|
|
|
1044 newname = Fgenerate_new_buffer_name (newname, current_buffer->name);
|
|
|
1045 else
|
|
|
1046 error ("Buffer name \"%s\" is in use",
|
|
14
|
1047 XSTRING_DATA (newname));
|
|
0
|
1048 }
|
|
|
1049
|
|
|
1050 current_buffer->name = newname;
|
|
|
1051
|
|
|
1052 /* Catch redisplay's attention. Unless we do this, the modelines for
|
|
|
1053 any windows displaying current_buffer will stay unchanged. */
|
|
|
1054 MARK_MODELINE_CHANGED;
|
|
|
1055
|
|
|
1056 buf = Fcurrent_buffer ();
|
|
|
1057
|
|
|
1058 /* The aconses in the Vbuffer_alist are shared with frame->buffer_alist,
|
|
|
1059 so this will change it in the per-frame ordering as well. */
|
|
|
1060 Fsetcar (Frassq (buf, Vbuffer_alist), newname);
|
|
|
1061 if (NILP (current_buffer->filename)
|
|
|
1062 && !NILP (current_buffer->auto_save_file_name))
|
|
|
1063 call0 (Qrename_auto_save_file);
|
|
|
1064 /* refetch since that last call may have done GC */
|
|
|
1065 /* (hypothetical relocating GC) */
|
|
|
1066 return current_buffer->name;
|
|
|
1067 }
|
|
|
1068
|
|
20
|
1069 DEFUN ("other-buffer", Fother_buffer, 0, 3, 0, /*
|
|
0
|
1070 Return most recently selected buffer other than BUFFER.
|
|
|
1071 Buffers not visible in windows are preferred to visible buffers,
|
|
|
1072 unless optional third argument VISIBLE-OK is non-nil.
|
|
|
1073 If no other buffer exists, the buffer `*scratch*' is returned.
|
|
|
1074 If BUFFER is omitted or nil, some interesting buffer is returned.
|
|
|
1075
|
|
|
1076 The ordering is for this frame; If second optional argument FRAME
|
|
|
1077 is provided, then the ordering is for that frame. If the second arg
|
|
|
1078 is t, then the global ordering is returned.
|
|
|
1079
|
|
|
1080 Note: In FSF Emacs, this function takes two arguments: BUFFER and
|
|
|
1081 VISIBLE-OK.
|
|
20
|
1082 */
|
|
|
1083 (buffer, frame, visible_ok))
|
|
0
|
1084 {
|
|
|
1085 /* This function can GC */
|
|
|
1086 Lisp_Object tail, buf, notsogood, tem;
|
|
|
1087 Lisp_Object alist;
|
|
|
1088
|
|
|
1089 notsogood = Qnil;
|
|
|
1090
|
|
|
1091 if (EQ (frame, Qt))
|
|
|
1092 alist = Vbuffer_alist;
|
|
|
1093 else
|
|
|
1094 {
|
|
|
1095 struct frame *f = decode_frame (frame);
|
|
|
1096
|
|
|
1097 XSETFRAME (frame, f);
|
|
|
1098 alist = f->buffer_alist;
|
|
|
1099 }
|
|
|
1100
|
|
|
1101 for (tail = alist; !NILP (tail); tail = Fcdr (tail))
|
|
|
1102 {
|
|
|
1103 buf = Fcdr (Fcar (tail));
|
|
|
1104 if (EQ (buf, buffer))
|
|
|
1105 continue;
|
|
|
1106 if (string_byte (XSTRING (XBUFFER (buf)->name), 0) == ' ')
|
|
|
1107 continue;
|
|
|
1108 /* If FRAME has a buffer_predicate,
|
|
|
1109 disregard buffers that don't fit the predicate. */
|
|
|
1110 if (FRAMEP (frame))
|
|
|
1111 {
|
|
183
|
1112 tem = XFRAME (frame)->buffer_predicate;
|
|
0
|
1113 if (!NILP (tem))
|
|
|
1114 {
|
|
|
1115 tem = call1 (tem, buf);
|
|
|
1116 if (NILP (tem))
|
|
|
1117 continue;
|
|
|
1118 }
|
|
|
1119 }
|
|
|
1120
|
|
|
1121 if (NILP (visible_ok))
|
|
|
1122 {
|
|
|
1123 /* get-buffer-window will handle nil or t frame */
|
|
|
1124 tem = Fget_buffer_window (buf, frame, Qnil);
|
|
|
1125 }
|
|
|
1126 else
|
|
|
1127 tem = Qnil;
|
|
|
1128 if (NILP (tem))
|
|
|
1129 return buf;
|
|
|
1130 if (NILP (notsogood))
|
|
|
1131 notsogood = buf;
|
|
|
1132 }
|
|
|
1133 if (!NILP (notsogood))
|
|
|
1134 return notsogood;
|
|
|
1135 return Fget_buffer_create (QSscratch);
|
|
|
1136 }
|
|
|
1137
|
|
100
|
1138 DEFUN ("buffer-disable-undo", Fbuffer_disable_undo, 0, 1, "", /*
|
|
0
|
1139 Make BUFFER stop keeping undo information.
|
|
|
1140 Any undo records it already has are discarded.
|
|
100
|
1141 No argument or nil as argument means do this for the current buffer.
|
|
20
|
1142 */
|
|
|
1143 (buffer))
|
|
0
|
1144 {
|
|
276
|
1145 /* Allowing nil is an RMSism */
|
|
0
|
1146 struct buffer *real_buf = decode_buffer (buffer, 1);
|
|
|
1147 real_buf->undo_list = Qt;
|
|
|
1148 return Qnil;
|
|
|
1149 }
|
|
|
1150
|
|
20
|
1151 DEFUN ("buffer-enable-undo", Fbuffer_enable_undo, 0, 1, "", /*
|
|
0
|
1152 Start keeping undo information for buffer BUFFER.
|
|
|
1153 No argument or nil as argument means do this for the current buffer.
|
|
20
|
1154 */
|
|
|
1155 (buffer))
|
|
0
|
1156 {
|
|
276
|
1157 /* Allowing nil is an RMSism */
|
|
0
|
1158 struct buffer *real_buf = decode_buffer (buffer, 1);
|
|
|
1159 if (EQ (real_buf->undo_list, Qt))
|
|
|
1160 real_buf->undo_list = Qnil;
|
|
|
1161
|
|
|
1162 return Qnil;
|
|
|
1163 }
|
|
|
1164
|
|
20
|
1165 DEFUN ("kill-buffer", Fkill_buffer, 1, 1, "bKill buffer: ", /*
|
|
0
|
1166 Kill the buffer BUFNAME.
|
|
|
1167 The argument may be a buffer or may be the name of a buffer.
|
|
|
1168 An argument of nil means kill the current buffer.
|
|
|
1169
|
|
|
1170 Value is t if the buffer is actually killed, nil if user says no.
|
|
|
1171
|
|
|
1172 The value of `kill-buffer-hook' (which may be local to that buffer),
|
|
|
1173 if not void, is a list of functions to be called, with no arguments,
|
|
|
1174 before the buffer is actually killed. The buffer to be killed is current
|
|
|
1175 when the hook functions are called.
|
|
|
1176
|
|
|
1177 Any processes that have this buffer as the `process-buffer' are killed
|
|
|
1178 with `delete-process'.
|
|
20
|
1179 */
|
|
|
1180 (bufname))
|
|
0
|
1181 {
|
|
116
|
1182 /* This function can call lisp */
|
|
0
|
1183 Lisp_Object buf;
|
|
|
1184 REGISTER struct buffer *b;
|
|
|
1185 struct gcpro gcpro1, gcpro2;
|
|
|
1186
|
|
|
1187 if (NILP (bufname))
|
|
|
1188 buf = Fcurrent_buffer ();
|
|
|
1189 else if (BUFFERP (bufname))
|
|
|
1190 buf = bufname;
|
|
|
1191 else
|
|
|
1192 {
|
|
|
1193 buf = get_buffer (bufname, 0);
|
|
|
1194 if (NILP (buf)) nsberror (bufname);
|
|
|
1195 }
|
|
|
1196
|
|
|
1197 b = XBUFFER (buf);
|
|
|
1198
|
|
|
1199 /* OK to delete an already-deleted buffer. */
|
|
|
1200 if (!BUFFER_LIVE_P (b))
|
|
|
1201 return Qnil;
|
|
|
1202
|
|
|
1203 /* Don't kill the minibuffer now current. */
|
|
|
1204 if (EQ (buf, Vminibuffer_zero))
|
|
|
1205 return Qnil;
|
|
|
1206
|
|
|
1207 /* Or the echo area. */
|
|
|
1208 if (EQ (buf, Vecho_area_buffer))
|
|
|
1209 return Qnil;
|
|
|
1210
|
|
|
1211 /* Query if the buffer is still modified. */
|
|
|
1212 if (INTERACTIVE && !NILP (b->filename)
|
|
|
1213 && BUF_MODIFF (b) > BUF_SAVE_MODIFF (b))
|
|
|
1214 {
|
|
|
1215 Lisp_Object killp;
|
|
|
1216 GCPRO2 (buf, bufname);
|
|
|
1217 killp = call1
|
|
|
1218 (Qyes_or_no_p,
|
|
|
1219 (emacs_doprnt_string_c
|
|
|
1220 ((CONST Bufbyte *) GETTEXT ("Buffer %s modified; kill anyway? "),
|
|
14
|
1221 Qnil, -1, XSTRING_DATA (b->name))));
|
|
0
|
1222 UNGCPRO;
|
|
|
1223 if (NILP (killp))
|
|
|
1224 return Qnil;
|
|
|
1225 b = XBUFFER (buf); /* Hypothetical relocating GC. */
|
|
|
1226 }
|
|
|
1227
|
|
|
1228 /* Run hooks with the buffer to be killed temporarily selected,
|
|
|
1229 unless the buffer is already dead (could have been deleted
|
|
|
1230 in the question above).
|
|
|
1231 */
|
|
|
1232 if (BUFFER_LIVE_P (b))
|
|
|
1233 {
|
|
|
1234 int speccount = specpdl_depth ();
|
|
|
1235 Lisp_Object tail = Qnil;
|
|
|
1236
|
|
|
1237 GCPRO2 (buf, tail);
|
|
|
1238 record_unwind_protect (save_excursion_restore, save_excursion_save ());
|
|
|
1239 Fset_buffer (buf);
|
|
|
1240
|
|
|
1241 /* First run the query functions; if any query is answered no,
|
|
|
1242 don't kill the buffer. */
|
|
219
|
1243 EXTERNAL_LIST_LOOP (tail, Vkill_buffer_query_functions)
|
|
0
|
1244 {
|
|
|
1245 if (NILP (call0 (Fcar (tail))))
|
|
|
1246 {
|
|
|
1247 UNGCPRO;
|
|
|
1248 return unbind_to (speccount, Qnil);
|
|
|
1249 }
|
|
|
1250 }
|
|
|
1251
|
|
|
1252 /* Then run the hooks. */
|
|
|
1253 run_hook (Qkill_buffer_hook);
|
|
|
1254 #ifdef HAVE_X_WINDOWS
|
|
|
1255 /* If an X selection was in this buffer, disown it.
|
|
|
1256 We could have done this by simply adding this function to the
|
|
|
1257 kill-buffer-hook, but the user might mess that up.
|
|
|
1258 */
|
|
|
1259 if (EQ (Vwindow_system, Qx))
|
|
|
1260 call0 (intern ("xselect-kill-buffer-hook"));
|
|
|
1261 /* #### generalize me! */
|
|
183
|
1262 #endif /* HAVE_X_WINDOWS */
|
|
0
|
1263 unbind_to (speccount, Qnil);
|
|
|
1264 UNGCPRO;
|
|
|
1265 b = XBUFFER (buf); /* Hypothetical relocating GC. */
|
|
|
1266 }
|
|
|
1267
|
|
|
1268 /* We have no more questions to ask. Verify that it is valid
|
|
|
1269 to kill the buffer. This must be done after the questions
|
|
|
1270 since anything can happen within yes-or-no-p. */
|
|
|
1271
|
|
114
|
1272 /* Might have been deleted during the last question above */
|
|
|
1273 if (!BUFFER_LIVE_P (b))
|
|
|
1274 return Qnil;
|
|
|
1275
|
|
70
|
1276 /* Don't kill the minibuffer now current. */
|
|
|
1277 if (EQ (buf, XWINDOW (minibuf_window)->buffer))
|
|
|
1278 return Qnil;
|
|
|
1279
|
|
0
|
1280 /* When we kill a base buffer, kill all its indirect buffers.
|
|
|
1281 We do it at this stage so nothing terrible happens if they
|
|
|
1282 ask questions or their hooks get errors. */
|
|
|
1283 if (! b->base_buffer)
|
|
|
1284 {
|
|
|
1285 Lisp_Object rest;
|
|
|
1286
|
|
|
1287 GCPRO1 (buf);
|
|
|
1288
|
|
|
1289 LIST_LOOP (rest, b->indirect_children)
|
|
|
1290 Fkill_buffer (XCAR (rest));
|
|
|
1291
|
|
|
1292 UNGCPRO;
|
|
|
1293 }
|
|
183
|
1294
|
|
0
|
1295 /* Make this buffer not be current.
|
|
|
1296 In the process, notice if this is the sole visible buffer
|
|
|
1297 and give up if so. */
|
|
|
1298 if (b == current_buffer)
|
|
|
1299 {
|
|
|
1300 Fset_buffer (Fother_buffer (buf, Qnil, Qnil));
|
|
|
1301 if (b == current_buffer)
|
|
|
1302 return Qnil;
|
|
|
1303 }
|
|
|
1304
|
|
|
1305 /* Now there is no question: we can kill the buffer. */
|
|
|
1306
|
|
|
1307 #ifdef CLASH_DETECTION
|
|
114
|
1308 /* Unlock this buffer's file, if it is locked. unlock_buffer
|
|
|
1309 can both GC and kill the current buffer, and wreak general
|
|
|
1310 havok by running lisp code. */
|
|
|
1311 GCPRO1 (buf);
|
|
0
|
1312 unlock_buffer (b);
|
|
114
|
1313 UNGCPRO;
|
|
|
1314 b = XBUFFER (buf);
|
|
|
1315
|
|
|
1316 if (!BUFFER_LIVE_P (b))
|
|
|
1317 return Qnil;
|
|
|
1318
|
|
|
1319 if (b == current_buffer)
|
|
|
1320 {
|
|
|
1321 Fset_buffer (Fother_buffer (buf, Qnil, Qnil));
|
|
|
1322 if (b == current_buffer)
|
|
|
1323 return Qnil;
|
|
|
1324 }
|
|
0
|
1325 #endif /* CLASH_DETECTION */
|
|
|
1326
|
|
|
1327 {
|
|
|
1328 int speccount = specpdl_depth ();
|
|
|
1329 specbind (Qinhibit_quit, Qt);
|
|
|
1330
|
|
|
1331 kill_buffer_processes (buf);
|
|
|
1332
|
|
|
1333 /* #### This is a problem if this buffer is in a dedicated window.
|
|
|
1334 Need to undedicate any windows of this buffer first (and delete them?)
|
|
|
1335 */
|
|
|
1336 Freplace_buffer_in_windows (buf);
|
|
|
1337
|
|
|
1338 delete_from_buffer_alist (buf);
|
|
|
1339
|
|
|
1340 font_lock_buffer_was_killed (b);
|
|
|
1341
|
|
|
1342 /* Delete any auto-save file, if we saved it in this session. */
|
|
|
1343 if (STRINGP (b->auto_save_file_name)
|
|
|
1344 && b->auto_save_modified != 0
|
|
|
1345 && BUF_SAVE_MODIFF (b) < b->auto_save_modified)
|
|
|
1346 {
|
|
146
|
1347 if (delete_auto_save_files != 0)
|
|
116
|
1348 {
|
|
|
1349 /* deleting the auto save file might kill b! */
|
|
|
1350 /* #### dmoore - fix this crap, we do this same gcpro and
|
|
|
1351 buffer liveness check multiple times. Let's get a
|
|
|
1352 macro or something for it. */
|
|
|
1353 GCPRO1 (buf);
|
|
|
1354 internal_delete_file (b->auto_save_file_name);
|
|
|
1355 UNGCPRO;
|
|
|
1356 b = XBUFFER (buf);
|
|
183
|
1357
|
|
116
|
1358 if (!BUFFER_LIVE_P (b))
|
|
|
1359 return Qnil;
|
|
|
1360
|
|
|
1361 if (b == current_buffer)
|
|
|
1362 {
|
|
|
1363 Fset_buffer (Fother_buffer (buf, Qnil, Qnil));
|
|
|
1364 if (b == current_buffer)
|
|
|
1365 return Qnil;
|
|
|
1366 }
|
|
|
1367 }
|
|
0
|
1368 }
|
|
|
1369
|
|
|
1370 uninit_buffer_markers (b);
|
|
|
1371
|
|
|
1372 kill_buffer_local_variables (b);
|
|
|
1373
|
|
|
1374 b->name = Qnil;
|
|
|
1375 uninit_buffer_text (b, !!b->base_buffer);
|
|
|
1376 b->undo_list = Qnil;
|
|
|
1377 uninit_buffer_extents (b);
|
|
|
1378 if (b->base_buffer)
|
|
|
1379 {
|
|
|
1380 #ifdef ERROR_CHECK_BUFPOS
|
|
|
1381 assert (!NILP (memq_no_quit (buf, b->base_buffer->indirect_children)));
|
|
|
1382 #endif
|
|
|
1383 b->base_buffer->indirect_children =
|
|
|
1384 delq_no_quit (buf, b->base_buffer->indirect_children);
|
|
|
1385 }
|
|
|
1386
|
|
|
1387 /* Clear away all Lisp objects, so that they
|
|
|
1388 won't be protected from GC. */
|
|
|
1389 nuke_all_buffer_slots (b, Qnil);
|
|
|
1390
|
|
|
1391 unbind_to (speccount, Qnil);
|
|
|
1392 }
|
|
|
1393 return Qt;
|
|
|
1394 }
|
|
|
1395
|
|
20
|
1396 DEFUN ("record-buffer", Frecord_buffer, 1, 1, 0, /*
|
|
2
|
1397 Place buffer BUF first in the buffer order.
|
|
185
|
1398 Call this function when a buffer is selected "visibly".
|
|
2
|
1399
|
|
|
1400 This function changes the global buffer order and the per-frame buffer
|
|
|
1401 order for the selected frame. The buffer order keeps track of recency
|
|
|
1402 of selection so that `other-buffer' will return a recently selected
|
|
|
1403 buffer. See `other-buffer' for more information.
|
|
20
|
1404 */
|
|
|
1405 (buf))
|
|
0
|
1406 {
|
|
|
1407 REGISTER Lisp_Object lynk, prev;
|
|
|
1408 struct frame *f = selected_frame ();
|
|
|
1409
|
|
|
1410 prev = Qnil;
|
|
|
1411 for (lynk = Vbuffer_alist; CONSP (lynk); lynk = XCDR (lynk))
|
|
|
1412 {
|
|
|
1413 if (EQ (XCDR (XCAR (lynk)), buf))
|
|
|
1414 break;
|
|
|
1415 prev = lynk;
|
|
|
1416 }
|
|
|
1417 /* Effectively do Vbuffer_alist = delq_no_quit (lynk, Vbuffer_alist) */
|
|
|
1418 if (NILP (prev))
|
|
|
1419 Vbuffer_alist = XCDR (Vbuffer_alist);
|
|
|
1420 else
|
|
|
1421 XCDR (prev) = XCDR (XCDR (prev));
|
|
|
1422 XCDR (lynk) = Vbuffer_alist;
|
|
|
1423 Vbuffer_alist = lynk;
|
|
|
1424
|
|
|
1425 /* That was the global one. Now do the same thing for the
|
|
|
1426 per-frame buffer-alist. */
|
|
|
1427 prev = Qnil;
|
|
|
1428 for (lynk = f->buffer_alist; CONSP (lynk); lynk = XCDR (lynk))
|
|
|
1429 {
|
|
|
1430 if (EQ (XCDR (XCAR (lynk)), buf))
|
|
|
1431 break;
|
|
|
1432 prev = lynk;
|
|
|
1433 }
|
|
|
1434 /* Effectively do f->buffer_alist = delq_no_quit (lynk, f->buffer_alist) */
|
|
|
1435 if (NILP (prev))
|
|
|
1436 f->buffer_alist = XCDR (f->buffer_alist);
|
|
|
1437 else
|
|
|
1438 XCDR (prev) = XCDR (XCDR (prev));
|
|
|
1439 XCDR (lynk) = f->buffer_alist;
|
|
|
1440 f->buffer_alist = lynk;
|
|
|
1441 return Qnil;
|
|
|
1442 }
|
|
|
1443
|
|
20
|
1444 DEFUN ("set-buffer-major-mode", Fset_buffer_major_mode, 1, 1, 0, /*
|
|
0
|
1445 Set an appropriate major mode for BUFFER, according to `default-major-mode'.
|
|
|
1446 Use this function before selecting the buffer, since it may need to inspect
|
|
|
1447 the current buffer's major mode.
|
|
20
|
1448 */
|
|
|
1449 (buf))
|
|
0
|
1450 {
|
|
|
1451 int speccount = specpdl_depth ();
|
|
|
1452 REGISTER Lisp_Object function, tem;
|
|
|
1453
|
|
|
1454 function = XBUFFER (Vbuffer_defaults)->major_mode;
|
|
|
1455 if (NILP (function))
|
|
|
1456 {
|
|
|
1457 tem = Fget (current_buffer->major_mode, Qmode_class, Qnil);
|
|
|
1458 if (NILP (tem))
|
|
|
1459 function = current_buffer->major_mode;
|
|
|
1460 }
|
|
|
1461
|
|
|
1462 if (NILP (function) || EQ (function, Qfundamental_mode))
|
|
|
1463 return Qnil;
|
|
|
1464
|
|
|
1465 /* To select a nonfundamental mode,
|
|
|
1466 select the buffer temporarily and then call the mode function. */
|
|
|
1467
|
|
|
1468 record_unwind_protect (Fset_buffer, Fcurrent_buffer ());
|
|
|
1469
|
|
|
1470 Fset_buffer (buf);
|
|
|
1471 call0 (function);
|
|
|
1472
|
|
|
1473 return unbind_to (speccount, Qnil);
|
|
|
1474 }
|
|
|
1475
|
|
|
1476 void
|
|
|
1477 switch_to_buffer (Lisp_Object bufname, Lisp_Object norecord)
|
|
|
1478 {
|
|
|
1479 call2 (Qswitch_to_buffer, bufname, norecord);
|
|
|
1480 }
|
|
|
1481
|
|
|
1482
|
|
20
|
1483 DEFUN ("current-buffer", Fcurrent_buffer, 0, 0, 0, /*
|
|
0
|
1484 Return the current buffer as a Lisp object.
|
|
20
|
1485 */
|
|
|
1486 ())
|
|
0
|
1487 {
|
|
|
1488 Lisp_Object buf;
|
|
|
1489 XSETBUFFER (buf, current_buffer);
|
|
|
1490 return buf;
|
|
|
1491 }
|
|
|
1492
|
|
|
1493 /* Set the current buffer to B. */
|
|
|
1494
|
|
|
1495 void
|
|
|
1496 set_buffer_internal (struct buffer *b)
|
|
|
1497 {
|
|
|
1498 REGISTER struct buffer *old_buf;
|
|
|
1499 REGISTER Lisp_Object tail;
|
|
|
1500
|
|
|
1501 if (current_buffer == b)
|
|
|
1502 return;
|
|
|
1503
|
|
|
1504 INVALIDATE_PIXEL_TO_GLYPH_CACHE;
|
|
|
1505
|
|
|
1506 old_buf = current_buffer;
|
|
|
1507 current_buffer = b;
|
|
|
1508 invalidate_current_column (); /* invalidate indentation cache */
|
|
|
1509
|
|
|
1510 #ifdef HAVE_FEP
|
|
|
1511 if (!noninteractive && initialized)
|
|
|
1512 {
|
|
|
1513 extern Lisp_Object Ffep_force_on (), Ffep_force_off (), Ffep_get_mode ();
|
|
|
1514
|
|
|
1515 old_buf->fep_mode = Ffep_get_mode ();
|
|
183
|
1516
|
|
0
|
1517 if (!NILP (current_buffer->fep_mode))
|
|
|
1518 Ffep_force_on ();
|
|
|
1519 else
|
|
|
1520 Ffep_force_off ();
|
|
|
1521 }
|
|
183
|
1522 #endif /* HAVE_FEP */
|
|
0
|
1523
|
|
|
1524 if (old_buf)
|
|
|
1525 {
|
|
|
1526 /* Put the undo list back in the base buffer, so that it appears
|
|
|
1527 that an indirect buffer shares the undo list of its base. */
|
|
|
1528 if (old_buf->base_buffer)
|
|
|
1529 old_buf->base_buffer->undo_list = old_buf->undo_list;
|
|
|
1530 }
|
|
|
1531
|
|
|
1532 /* Get the undo list from the base buffer, so that it appears
|
|
|
1533 that an indirect buffer shares the undo list of its base. */
|
|
|
1534 if (b->base_buffer)
|
|
|
1535 b->undo_list = b->base_buffer->undo_list;
|
|
|
1536
|
|
|
1537 /* Look down buffer's list of local Lisp variables
|
|
|
1538 to find and update any that forward into C variables. */
|
|
|
1539
|
|
|
1540 LIST_LOOP (tail, b->local_var_alist)
|
|
|
1541 {
|
|
|
1542 Lisp_Object sym = XCAR (XCAR (tail));
|
|
|
1543 Lisp_Object valcontents = XSYMBOL (sym)->value;
|
|
|
1544 if (SYMBOL_VALUE_MAGIC_P (valcontents))
|
|
|
1545 {
|
|
|
1546 /* Just reference the variable
|
|
|
1547 to cause it to become set for this buffer. */
|
|
82
|
1548 /* Use find_symbol_value_quickly to avoid an unnecessary O(n)
|
|
|
1549 lookup. */
|
|
|
1550 (void) find_symbol_value_quickly (XCAR (tail), 1);
|
|
0
|
1551 }
|
|
|
1552 }
|
|
|
1553
|
|
|
1554 /* Do the same with any others that were local to the previous buffer */
|
|
|
1555
|
|
|
1556 if (old_buf)
|
|
|
1557 {
|
|
82
|
1558 LIST_LOOP (tail, old_buf->local_var_alist)
|
|
0
|
1559 {
|
|
|
1560 Lisp_Object sym = XCAR (XCAR (tail));
|
|
|
1561 Lisp_Object valcontents = XSYMBOL (sym)->value;
|
|
|
1562
|
|
|
1563 if (SYMBOL_VALUE_MAGIC_P (valcontents))
|
|
|
1564 {
|
|
|
1565 /* Just reference the variable
|
|
|
1566 to cause it to become set for this buffer. */
|
|
82
|
1567 /* Use find_symbol_value_quickly with find_it_p as 0 to avoid an
|
|
|
1568 unnecessary O(n) lookup which is guaranteed to be worst case.
|
|
|
1569 Any symbols which are local are guaranteed to have been
|
|
|
1570 handled in the previous loop, above. */
|
|
|
1571 (void) find_symbol_value_quickly (sym, 0);
|
|
0
|
1572 }
|
|
|
1573 }
|
|
|
1574 }
|
|
|
1575 }
|
|
|
1576
|
|
20
|
1577 DEFUN ("set-buffer", Fset_buffer, 1, 1, 0, /*
|
|
272
|
1578 Make the buffer BUFFER current for editing operations.
|
|
|
1579 BUFFER may be a buffer or the name of an existing buffer.
|
|
0
|
1580 See also `save-excursion' when you want to make a buffer current temporarily.
|
|
|
1581 This function does not display the buffer, so its effect ends
|
|
|
1582 when the current command terminates.
|
|
|
1583 Use `switch-to-buffer' or `pop-to-buffer' to switch buffers permanently.
|
|
20
|
1584 */
|
|
272
|
1585 (buffer))
|
|
0
|
1586 {
|
|
272
|
1587 buffer = get_buffer (buffer, 0);
|
|
0
|
1588 if (NILP (buffer))
|
|
|
1589 error ("Selecting deleted or non-existent buffer");
|
|
|
1590 set_buffer_internal (XBUFFER (buffer));
|
|
|
1591 return buffer;
|
|
|
1592 }
|
|
|
1593
|
|
|
1594
|
|
20
|
1595 DEFUN ("barf-if-buffer-read-only", Fbarf_if_buffer_read_only, 0, 3, 0, /*
|
|
0
|
1596 Signal a `buffer-read-only' error if the buffer is read-only.
|
|
|
1597 Optional argument BUFFER defaults to the current buffer.
|
|
|
1598
|
|
|
1599 If optional argument START is non-nil, all extents in the buffer
|
|
|
1600 which overlap that part of the buffer are checked to ensure none has a
|
|
|
1601 `read-only' property. (Extents that lie completely within the range,
|
|
|
1602 however, are not checked.) END defaults to the value of START.
|
|
|
1603
|
|
|
1604 If START and END are equal, the range checked is [START, END] (i.e.
|
|
|
1605 closed on both ends); otherwise, the range checked is (START, END)
|
|
272
|
1606 \(open on both ends), except that extents that lie completely within
|
|
0
|
1607 [START, END] are not checked. See `extent-in-region-p' for a fuller
|
|
|
1608 discussion.
|
|
20
|
1609 */
|
|
|
1610 (buffer, start, end))
|
|
0
|
1611 {
|
|
|
1612 struct buffer *b = decode_buffer (buffer, 0);
|
|
|
1613 Bufpos s, e;
|
|
|
1614
|
|
|
1615 if (NILP (start))
|
|
|
1616 s = e = -1;
|
|
|
1617 else
|
|
|
1618 {
|
|
|
1619 if (NILP (end))
|
|
|
1620 end = start;
|
|
|
1621 get_buffer_range_char (b, start, end, &s, &e, 0);
|
|
|
1622 }
|
|
|
1623 barf_if_buffer_read_only (b, s, e);
|
|
|
1624
|
|
183
|
1625 return Qnil;
|
|
0
|
1626 }
|
|
|
1627
|
|
|
1628 static void
|
|
|
1629 bury_buffer_1 (Lisp_Object buffer, Lisp_Object before,
|
|
|
1630 Lisp_Object *buffer_alist)
|
|
|
1631 {
|
|
|
1632 Lisp_Object aelt = rassq_no_quit (buffer, *buffer_alist);
|
|
|
1633 Lisp_Object lynk = memq_no_quit (aelt, *buffer_alist);
|
|
|
1634 Lisp_Object iter, before_before;
|
|
|
1635
|
|
|
1636 *buffer_alist = delq_no_quit (aelt, *buffer_alist);
|
|
|
1637 for (before_before = Qnil, iter = *buffer_alist;
|
|
|
1638 !NILP (iter) && !EQ (XCDR (XCAR (iter)), before);
|
|
|
1639 before_before = iter, iter = XCDR (iter))
|
|
|
1640 ;
|
|
|
1641 XCDR (lynk) = iter;
|
|
|
1642 if (!NILP (before_before))
|
|
|
1643 XCDR (before_before) = lynk;
|
|
|
1644 else
|
|
|
1645 *buffer_alist = lynk;
|
|
|
1646 }
|
|
|
1647
|
|
20
|
1648 DEFUN ("bury-buffer", Fbury_buffer, 0, 2, "", /*
|
|
0
|
1649 Put BUFFER at the end of the list of all buffers.
|
|
|
1650 There it is the least likely candidate for `other-buffer' to return;
|
|
|
1651 thus, the least likely buffer for \\[switch-to-buffer] to select by default.
|
|
|
1652 If BUFFER is nil or omitted, bury the current buffer.
|
|
|
1653 Also, if BUFFER is nil or omitted, remove the current buffer from the
|
|
|
1654 selected window if it is displayed there.
|
|
|
1655 If BEFORE is non-nil, it specifies a buffer before which BUFFER
|
|
|
1656 will be placed, instead of being placed at the end.
|
|
20
|
1657 */
|
|
|
1658 (buffer, before))
|
|
0
|
1659 {
|
|
|
1660 /* This function can GC */
|
|
|
1661 struct buffer *buf = decode_buffer (buffer, 1);
|
|
|
1662 /* If we're burying the current buffer, unshow it. */
|
|
|
1663 /* Note that the behavior of (bury-buffer nil) and
|
|
|
1664 (bury-buffer (current-buffer)) is not the same.
|
|
|
1665 This is illogical but is historical. Changing it
|
|
|
1666 breaks mh-e and TeX and such packages. */
|
|
|
1667 if (NILP (buffer))
|
|
|
1668 switch_to_buffer (Fother_buffer (Fcurrent_buffer (), Qnil, Qnil), Qnil);
|
|
|
1669 XSETBUFFER (buffer, buf);
|
|
|
1670
|
|
|
1671 if (!NILP (before))
|
|
|
1672 before = get_buffer (before, 1);
|
|
|
1673
|
|
|
1674 if (EQ (before, buffer))
|
|
|
1675 error ("Cannot place a buffer before itself");
|
|
|
1676
|
|
|
1677 bury_buffer_1 (buffer, before, &Vbuffer_alist);
|
|
|
1678 bury_buffer_1 (buffer, before, &selected_frame ()->buffer_alist);
|
|
|
1679
|
|
|
1680 return Qnil;
|
|
|
1681 }
|
|
|
1682
|
|
|
1683
|
|
20
|
1684 DEFUN ("erase-buffer", Ferase_buffer, 0, 1, "*", /*
|
|
0
|
1685 Delete the entire contents of the BUFFER.
|
|
|
1686 Any clipping restriction in effect (see `narrow-to-region') is removed,
|
|
|
1687 so the buffer is truly empty after this.
|
|
|
1688 BUFFER defaults to the current buffer if omitted.
|
|
20
|
1689 */
|
|
|
1690 (buffer))
|
|
0
|
1691 {
|
|
|
1692 /* This function can GC */
|
|
|
1693 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
1694 /* #### yuck yuck yuck. This is gross. The old echo-area code,
|
|
|
1695 however, was the only place that called erase_buffer() with a
|
|
|
1696 non-zero NO_CLIP argument.
|
|
|
1697
|
|
|
1698 Someone needs to fix up the redisplay code so it is smarter
|
|
|
1699 about this, so that the NO_CLIP junk isn't necessary. */
|
|
|
1700 int no_clip = (b == XBUFFER (Vecho_area_buffer));
|
|
|
1701
|
|
|
1702 INVALIDATE_PIXEL_TO_GLYPH_CACHE;
|
|
|
1703
|
|
|
1704 widen_buffer (b, no_clip);
|
|
|
1705 buffer_delete_range (b, BUF_BEG (b), BUF_Z (b), 0);
|
|
|
1706 b->last_window_start = 1;
|
|
|
1707
|
|
|
1708 /* Prevent warnings, or suspension of auto saving, that would happen
|
|
|
1709 if future size is less than past size. Use of erase-buffer
|
|
|
1710 implies that the future text is not really related to the past text. */
|
|
272
|
1711 b->saved_size = Qzero;
|
|
0
|
1712
|
|
|
1713 zmacs_region_stays = 0;
|
|
|
1714 return Qnil;
|
|
|
1715 }
|
|
|
1716
|
|
|
1717
|
|
|
1718
|
|
20
|
1719 DEFUN ("kill-all-local-variables", Fkill_all_local_variables, 0, 0, 0, /*
|
|
0
|
1720 Switch to Fundamental mode by killing current buffer's local variables.
|
|
|
1721 Most local variable bindings are eliminated so that the default values
|
|
|
1722 become effective once more. Also, the syntax table is set from
|
|
70
|
1723 `standard-syntax-table', the category table is set from
|
|
|
1724 `standard-category-table' (if support for Mule exists), local keymap is set
|
|
|
1725 to nil, the abbrev table is set from `fundamental-mode-abbrev-table',
|
|
0
|
1726 and all specifier specifications whose locale is the current buffer
|
|
|
1727 are removed. This function also forces redisplay of the modeline.
|
|
|
1728
|
|
|
1729 Every function to select a new major mode starts by
|
|
|
1730 calling this function.
|
|
|
1731
|
|
|
1732 As a special exception, local variables whose names have
|
|
|
1733 a non-nil `permanent-local' property are not eliminated by this function.
|
|
|
1734
|
|
|
1735 The first thing this function does is run
|
|
|
1736 the normal hook `change-major-mode-hook'.
|
|
20
|
1737 */
|
|
|
1738 ())
|
|
0
|
1739 {
|
|
|
1740 /* This function can GC */
|
|
|
1741 run_hook (Qchange_major_mode_hook);
|
|
|
1742
|
|
|
1743 reset_buffer_local_variables (current_buffer, 0);
|
|
|
1744
|
|
|
1745 kill_buffer_local_variables (current_buffer);
|
|
|
1746
|
|
|
1747 kill_specifier_buffer_locals (Fcurrent_buffer ());
|
|
|
1748
|
|
|
1749 /* Force modeline redisplay. Useful here because all major mode
|
|
|
1750 commands call this function. */
|
|
|
1751 MARK_MODELINE_CHANGED;
|
|
|
1752
|
|
|
1753 return Qnil;
|
|
|
1754 }
|
|
|
1755
|
|
|
1756 #ifdef MEMORY_USAGE_STATS
|
|
|
1757
|
|
|
1758 struct buffer_stats
|
|
|
1759 {
|
|
|
1760 int text;
|
|
|
1761 int markers;
|
|
|
1762 int extents;
|
|
|
1763 int other;
|
|
|
1764 };
|
|
|
1765
|
|
272
|
1766 static size_t
|
|
0
|
1767 compute_buffer_text_usage (struct buffer *b, struct overhead_stats *ovstats)
|
|
|
1768 {
|
|
272
|
1769 int was_requested = b->text->z - 1;
|
|
|
1770 size_t gap = b->text->gap_size + b->text->end_gap_size;
|
|
|
1771 size_t malloc_use = malloced_storage_size (b->text->beg, was_requested + gap, 0);
|
|
|
1772
|
|
|
1773 ovstats->gap_overhead += gap;
|
|
|
1774 ovstats->was_requested += was_requested;
|
|
0
|
1775 ovstats->malloc_overhead += malloc_use - (was_requested + gap);
|
|
|
1776 return malloc_use;
|
|
|
1777 }
|
|
|
1778
|
|
|
1779 static void
|
|
|
1780 compute_buffer_usage (struct buffer *b, struct buffer_stats *stats,
|
|
|
1781 struct overhead_stats *ovstats)
|
|
|
1782 {
|
|
272
|
1783 xzero (*stats);
|
|
|
1784 stats->other += malloced_storage_size (b, sizeof (*b), ovstats);
|
|
|
1785 stats->text += compute_buffer_text_usage (b, ovstats);
|
|
0
|
1786 stats->markers += compute_buffer_marker_usage (b, ovstats);
|
|
|
1787 stats->extents += compute_buffer_extent_usage (b, ovstats);
|
|
|
1788 }
|
|
|
1789
|
|
20
|
1790 DEFUN ("buffer-memory-usage", Fbuffer_memory_usage, 1, 1, 0, /*
|
|
0
|
1791 Return stats about the memory usage of buffer BUFFER.
|
|
272
|
1792 The values returned are in the form of an alist of usage types and byte
|
|
0
|
1793 counts. The byte counts attempt to encompass all the memory used
|
|
|
1794 by the buffer (separate from the memory logically associated with a
|
|
|
1795 buffer or frame), including internal structures and any malloc()
|
|
|
1796 overhead associated with them. In practice, the byte counts are
|
|
|
1797 underestimated because certain memory usage is very hard to determine
|
|
272
|
1798 \(e.g. the amount of memory used inside the Xt library or inside the
|
|
0
|
1799 X server) and because there is other stuff that might logically
|
|
|
1800 be associated with a window, buffer, or frame (e.g. window configurations,
|
|
|
1801 glyphs) but should not obviously be included in the usage counts.
|
|
|
1802
|
|
|
1803 Multiple slices of the total memory usage may be returned, separated
|
|
|
1804 by a nil. Each slice represents a particular view of the memory, a
|
|
|
1805 particular way of partitioning it into groups. Within a slice, there
|
|
|
1806 is no overlap between the groups of memory, and each slice collectively
|
|
|
1807 represents all the memory concerned.
|
|
20
|
1808 */
|
|
|
1809 (buffer))
|
|
0
|
1810 {
|
|
|
1811 struct buffer_stats stats;
|
|
|
1812 struct overhead_stats ovstats;
|
|
272
|
1813 Lisp_Object val = Qnil;
|
|
0
|
1814
|
|
|
1815 CHECK_BUFFER (buffer); /* dead buffers should be allowed, no? */
|
|
272
|
1816 xzero (ovstats);
|
|
0
|
1817 compute_buffer_usage (XBUFFER (buffer), &stats, &ovstats);
|
|
|
1818
|
|
272
|
1819 val = acons (Qtext, make_int (stats.text), val);
|
|
|
1820 val = acons (Qmarkers, make_int (stats.markers), val);
|
|
|
1821 val = acons (Qextents, make_int (stats.extents), val);
|
|
|
1822 val = acons (Qother, make_int (stats.other), val);
|
|
|
1823 val = Fcons (Qnil, val);
|
|
|
1824 val = acons (Qactually_requested, make_int (ovstats.was_requested), val);
|
|
|
1825 val = acons (Qmalloc_overhead, make_int (ovstats.malloc_overhead), val);
|
|
|
1826 val = acons (Qgap_overhead, make_int (ovstats.gap_overhead), val);
|
|
|
1827 val = acons (Qdynarr_overhead, make_int (ovstats.dynarr_overhead), val);
|
|
|
1828
|
|
|
1829 return Fnreverse (val);
|
|
0
|
1830 }
|
|
|
1831
|
|
|
1832 #endif /* MEMORY_USAGE_STATS */
|
|
|
1833
|
|
|
1834 void
|
|
|
1835 syms_of_buffer (void)
|
|
|
1836 {
|
|
|
1837 defsymbol (&Qbuffer_live_p, "buffer-live-p");
|
|
|
1838 defsymbol (&Qbuffer_or_string_p, "buffer-or-string-p");
|
|
|
1839 defsymbol (&Qmode_class, "mode-class");
|
|
|
1840 defsymbol (&Qrename_auto_save_file, "rename-auto-save-file");
|
|
|
1841 defsymbol (&Qkill_buffer_hook, "kill-buffer-hook");
|
|
|
1842 defsymbol (&Qpermanent_local, "permanent-local");
|
|
|
1843
|
|
|
1844 defsymbol (&Qfirst_change_hook, "first-change-hook");
|
|
|
1845 defsymbol (&Qbefore_change_functions, "before-change-functions");
|
|
|
1846 defsymbol (&Qafter_change_functions, "after-change-functions");
|
|
|
1847
|
|
|
1848 /* #### Obsolete, for compatibility */
|
|
|
1849 defsymbol (&Qbefore_change_function, "before-change-function");
|
|
|
1850 defsymbol (&Qafter_change_function, "after-change-function");
|
|
|
1851
|
|
|
1852 defsymbol (&Qbuffer_file_name, "buffer-file-name");
|
|
|
1853 defsymbol (&Qbuffer_undo_list, "buffer-undo-list");
|
|
|
1854 defsymbol (&Qdefault_directory, "default-directory");
|
|
|
1855
|
|
|
1856 defsymbol (&Qget_file_buffer, "get-file-buffer");
|
|
|
1857 defsymbol (&Qchange_major_mode_hook, "change-major-mode-hook");
|
|
|
1858
|
|
|
1859 defsymbol (&Qfundamental_mode, "fundamental-mode");
|
|
|
1860
|
|
|
1861 defsymbol (&Qfind_file_compare_truenames, "find-file-compare-truenames");
|
|
|
1862
|
|
|
1863 defsymbol (&Qswitch_to_buffer, "switch-to-buffer");
|
|
|
1864
|
|
20
|
1865 DEFSUBR (Fbufferp);
|
|
|
1866 DEFSUBR (Fbuffer_live_p);
|
|
|
1867 DEFSUBR (Fbuffer_list);
|
|
|
1868 DEFSUBR (Fdecode_buffer);
|
|
|
1869 DEFSUBR (Fget_buffer);
|
|
|
1870 DEFSUBR (Fget_file_buffer);
|
|
|
1871 DEFSUBR (Fget_buffer_create);
|
|
140
|
1872 #if 0
|
|
20
|
1873 DEFSUBR (Fmake_indirect_buffer);
|
|
140
|
1874 #endif
|
|
20
|
1875
|
|
|
1876 DEFSUBR (Fgenerate_new_buffer_name);
|
|
|
1877 DEFSUBR (Fbuffer_name);
|
|
|
1878 DEFSUBR (Fbuffer_file_name);
|
|
|
1879 DEFSUBR (Fbuffer_base_buffer);
|
|
|
1880 DEFSUBR (Fbuffer_indirect_children);
|
|
|
1881 DEFSUBR (Fbuffer_local_variables);
|
|
|
1882 DEFSUBR (Fbuffer_dedicated_frame);
|
|
|
1883 DEFSUBR (Fset_buffer_dedicated_frame);
|
|
|
1884 DEFSUBR (Fbuffer_modified_p);
|
|
|
1885 DEFSUBR (Fset_buffer_modified_p);
|
|
|
1886 DEFSUBR (Fbuffer_modified_tick);
|
|
|
1887 DEFSUBR (Frename_buffer);
|
|
|
1888 DEFSUBR (Fother_buffer);
|
|
|
1889 DEFSUBR (Fbuffer_disable_undo);
|
|
|
1890 DEFSUBR (Fbuffer_enable_undo);
|
|
|
1891 DEFSUBR (Fkill_buffer);
|
|
|
1892 DEFSUBR (Ferase_buffer);
|
|
|
1893 DEFSUBR (Frecord_buffer);
|
|
|
1894 DEFSUBR (Fset_buffer_major_mode);
|
|
|
1895 DEFSUBR (Fcurrent_buffer);
|
|
|
1896 DEFSUBR (Fset_buffer);
|
|
|
1897 DEFSUBR (Fbarf_if_buffer_read_only);
|
|
|
1898 DEFSUBR (Fbury_buffer);
|
|
|
1899 DEFSUBR (Fkill_all_local_variables);
|
|
0
|
1900 #ifdef MEMORY_USAGE_STATS
|
|
20
|
1901 DEFSUBR (Fbuffer_memory_usage);
|
|
0
|
1902 #endif
|
|
|
1903
|
|
|
1904 deferror (&Qprotected_field, "protected-field",
|
|
|
1905 "Attempt to modify a protected field", Qerror);
|
|
|
1906 }
|
|
|
1907
|
|
|
1908 /* initialize the buffer routines */
|
|
|
1909 void
|
|
|
1910 vars_of_buffer (void)
|
|
|
1911 {
|
|
|
1912 /* This function can GC */
|
|
|
1913 staticpro (&QSFundamental);
|
|
|
1914 staticpro (&QSscratch);
|
|
|
1915 staticpro (&Vbuffer_alist);
|
|
|
1916
|
|
|
1917 QSFundamental = Fpurecopy (build_string ("Fundamental"));
|
|
|
1918 QSscratch = Fpurecopy (build_string (DEFER_GETTEXT ("*scratch*")));
|
|
|
1919
|
|
|
1920 Vbuffer_alist = Qnil;
|
|
|
1921 current_buffer = 0;
|
|
|
1922
|
|
|
1923 DEFVAR_LISP ("change-major-mode-hook", &Vchange_major_mode_hook /*
|
|
|
1924 List of hooks to be run before killing local variables in a buffer.
|
|
2
|
1925 This should be used by any mode that temporarily alters the contents or
|
|
0
|
1926 the read-only state of the buffer. See also `kill-all-local-variables'.
|
|
|
1927 */ );
|
|
|
1928 Vchange_major_mode_hook = Qnil;
|
|
|
1929
|
|
|
1930 DEFVAR_BOOL ("find-file-compare-truenames", &find_file_compare_truenames /*
|
|
|
1931 If this is true, then the find-file command will check the truenames
|
|
|
1932 of all visited files when deciding whether a given file is already in
|
|
|
1933 a buffer, instead of just the buffer-file-name. This means that if you
|
|
|
1934 attempt to visit another file which is a symbolic-link to a file which is
|
|
|
1935 already in a buffer, the existing buffer will be found instead of a newly-
|
|
|
1936 created one. This works if any component of the pathname (including a non-
|
|
|
1937 terminal component) is a symbolic link as well, but doesn't work with hard
|
|
|
1938 links (nothing does).
|
|
|
1939
|
|
|
1940 See also the variable find-file-use-truenames.
|
|
|
1941 */ );
|
|
|
1942 find_file_compare_truenames = 0;
|
|
|
1943
|
|
|
1944 DEFVAR_BOOL ("find-file-use-truenames", &find_file_use_truenames /*
|
|
|
1945 If this is true, then a buffer's visited file-name will always be
|
|
|
1946 chased back to the real file; it will never be a symbolic link, and there
|
|
|
1947 will never be a symbolic link anywhere in its directory path.
|
|
|
1948 That is, the buffer-file-name and buffer-file-truename will be equal.
|
|
|
1949 This doesn't work with hard links.
|
|
|
1950
|
|
|
1951 See also the variable find-file-compare-truenames.
|
|
|
1952 */ );
|
|
|
1953 find_file_use_truenames = 0;
|
|
|
1954
|
|
|
1955 DEFVAR_LISP ("before-change-functions", &Vbefore_change_functions /*
|
|
|
1956 List of functions to call before each text change.
|
|
|
1957 Two arguments are passed to each function: the positions of
|
|
|
1958 the beginning and end of the range of old text to be changed.
|
|
|
1959 \(For an insertion, the beginning and end are at the same place.)
|
|
|
1960 No information is given about the length of the text after the change.
|
|
|
1961
|
|
|
1962 Buffer changes made while executing the `before-change-functions'
|
|
|
1963 don't call any before-change or after-change functions.
|
|
|
1964 */ );
|
|
|
1965 Vbefore_change_functions = Qnil;
|
|
|
1966
|
|
|
1967 /* FSF Emacs has the following additional doc at the end of
|
|
|
1968 before-change-functions and after-change-functions:
|
|
|
1969
|
|
203
|
1970 That's because these variables are temporarily set to nil.
|
|
|
1971 As a result, a hook function cannot straightforwardly alter the value of
|
|
|
1972 these variables. See the Emacs Lisp manual for a way of
|
|
0
|
1973 accomplishing an equivalent result by using other variables.
|
|
|
1974
|
|
|
1975 But this doesn't apply under XEmacs because things are
|
|
|
1976 handled better. */
|
|
|
1977
|
|
|
1978 DEFVAR_LISP ("after-change-functions", &Vafter_change_functions /*
|
|
|
1979 List of functions to call after each text change.
|
|
|
1980 Three arguments are passed to each function: the positions of
|
|
|
1981 the beginning and end of the range of changed text,
|
|
|
1982 and the length of the pre-change text replaced by that range.
|
|
|
1983 \(For an insertion, the pre-change length is zero;
|
|
|
1984 for a deletion, that length is the number of characters deleted,
|
|
|
1985 and the post-change beginning and end are at the same place.)
|
|
|
1986
|
|
|
1987 Buffer changes made while executing `after-change-functions'
|
|
|
1988 don't call any before-change or after-change functions.
|
|
|
1989 */ );
|
|
|
1990 Vafter_change_functions = Qnil;
|
|
|
1991
|
|
|
1992 DEFVAR_LISP ("before-change-function", &Vbefore_change_function /*
|
|
|
1993
|
|
|
1994 */ ); /* obsoleteness will be documented */
|
|
|
1995 Vbefore_change_function = Qnil;
|
|
|
1996
|
|
|
1997 DEFVAR_LISP ("after-change-function", &Vafter_change_function /*
|
|
|
1998
|
|
|
1999 */ ); /* obsoleteness will be documented */
|
|
|
2000 Vafter_change_function = Qnil;
|
|
|
2001
|
|
|
2002 DEFVAR_LISP ("first-change-hook", &Vfirst_change_hook /*
|
|
|
2003 A list of functions to call before changing a buffer which is unmodified.
|
|
|
2004 The functions are run using the `run-hooks' function.
|
|
|
2005 */ );
|
|
|
2006 Vfirst_change_hook = Qnil;
|
|
|
2007
|
|
|
2008 #if 0 /* FSFmacs */
|
|
|
2009 xxDEFVAR_LISP ("transient-mark-mode", &Vtransient_mark_mode /*
|
|
|
2010 *Non-nil means deactivate the mark when the buffer contents change.
|
|
|
2011 */ );
|
|
|
2012 Vtransient_mark_mode = Qnil;
|
|
183
|
2013 #endif /* FSFmacs */
|
|
0
|
2014
|
|
|
2015 DEFVAR_INT ("undo-threshold", &undo_threshold /*
|
|
|
2016 Keep no more undo information once it exceeds this size.
|
|
|
2017 This threshold is applied when garbage collection happens.
|
|
|
2018 The size is counted as the number of bytes occupied,
|
|
|
2019 which includes both saved text and other data.
|
|
|
2020 */ );
|
|
|
2021 undo_threshold = 20000;
|
|
|
2022
|
|
|
2023 DEFVAR_INT ("undo-high-threshold", &undo_high_threshold /*
|
|
|
2024 Don't keep more than this much size of undo information.
|
|
|
2025 A command which pushes past this size is itself forgotten.
|
|
|
2026 This threshold is applied when garbage collection happens.
|
|
|
2027 The size is counted as the number of bytes occupied,
|
|
|
2028 which includes both saved text and other data.
|
|
|
2029 */ );
|
|
|
2030 undo_high_threshold = 30000;
|
|
|
2031
|
|
|
2032 DEFVAR_LISP ("inhibit-read-only", &Vinhibit_read_only /*
|
|
|
2033 *Non-nil means disregard read-only status of buffers or characters.
|
|
|
2034 If the value is t, disregard `buffer-read-only' and all `read-only'
|
|
|
2035 text properties. If the value is a list, disregard `buffer-read-only'
|
|
|
2036 and disregard a `read-only' extent property or text property if the
|
|
|
2037 property value is a member of the list.
|
|
|
2038 */ );
|
|
|
2039 Vinhibit_read_only = Qnil;
|
|
|
2040
|
|
|
2041 DEFVAR_LISP ("kill-buffer-query-functions", &Vkill_buffer_query_functions /*
|
|
|
2042 List of functions called with no args to query before killing a buffer.
|
|
|
2043 */ );
|
|
|
2044 Vkill_buffer_query_functions = Qnil;
|
|
|
2045
|
|
146
|
2046 DEFVAR_BOOL ("delete-auto-save-files", &delete_auto_save_files /*
|
|
0
|
2047 *Non-nil means delete auto-save file when a buffer is saved or killed.
|
|
|
2048 */ );
|
|
146
|
2049 delete_auto_save_files = 1;
|
|
0
|
2050 }
|
|
|
2051
|
|
183
|
2052 /* DOC is ignored because it is snagged and recorded externally
|
|
0
|
2053 * by make-docfile */
|
|
|
2054 /* Renamed from DEFVAR_PER_BUFFER because FSFmacs D_P_B takes
|
|
|
2055 * a bogus extra arg, which confuses an otherwise identical make-docfile.c */
|
|
|
2056 /* Declaring this stuff as const produces 'Cannot reinitialize' messages
|
|
|
2057 from SunPro C's fix-and-continue feature (a way neato feature that
|
|
|
2058 makes debugging unbelievably more bearable) */
|
|
185
|
2059 #define DEFVAR_BUFFER_LOCAL(lname, field_name) do { \
|
|
|
2060 static CONST_IF_NOT_DEBUG struct symbol_value_forward I_hate_C \
|
|
211
|
2061 = { { { symbol_value_forward_lheader_initializer, \
|
|
185
|
2062 (struct lcrecord_header *) &(buffer_local_flags.field_name), 69 }, \
|
|
|
2063 SYMVAL_CURRENT_BUFFER_FORWARD }, 0 }; \
|
|
0
|
2064 defvar_buffer_local ((lname), &I_hate_C); \
|
|
|
2065 } while (0)
|
|
|
2066
|
|
185
|
2067 #define DEFVAR_BUFFER_LOCAL_MAGIC(lname, field_name, magicfun) do { \
|
|
|
2068 static CONST_IF_NOT_DEBUG struct symbol_value_forward I_hate_C \
|
|
211
|
2069 = { { { symbol_value_forward_lheader_initializer, \
|
|
185
|
2070 (struct lcrecord_header *) &(buffer_local_flags.field_name), 69 }, \
|
|
|
2071 SYMVAL_CURRENT_BUFFER_FORWARD }, magicfun }; \
|
|
0
|
2072 defvar_buffer_local ((lname), &I_hate_C); \
|
|
|
2073 } while (0)
|
|
|
2074
|
|
185
|
2075 #define DEFVAR_CONST_BUFFER_LOCAL(lname, field_name) do { \
|
|
|
2076 static CONST_IF_NOT_DEBUG struct symbol_value_forward I_hate_C \
|
|
211
|
2077 = { { { symbol_value_forward_lheader_initializer, \
|
|
185
|
2078 (struct lcrecord_header *) &(buffer_local_flags.field_name), 69 }, \
|
|
|
2079 SYMVAL_CONST_CURRENT_BUFFER_FORWARD }, 0 }; \
|
|
0
|
2080 defvar_buffer_local ((lname), &I_hate_C); \
|
|
|
2081 } while (0)
|
|
|
2082
|
|
185
|
2083 #define DEFVAR_CONST_BUFFER_LOCAL_MAGIC(lname, field_name, magicfun) do{\
|
|
|
2084 static CONST_IF_NOT_DEBUG struct symbol_value_forward I_hate_C \
|
|
211
|
2085 = { { { symbol_value_forward_lheader_initializer, \
|
|
185
|
2086 (struct lcrecord_header *) &(buffer_local_flags.field_name), 69 }, \
|
|
|
2087 SYMVAL_CONST_CURRENT_BUFFER_FORWARD }, magicfun }; \
|
|
0
|
2088 defvar_buffer_local ((lname), &I_hate_C); \
|
|
|
2089 } while (0)
|
|
|
2090
|
|
|
2091 static void
|
|
183
|
2092 defvar_buffer_local (CONST char *namestring,
|
|
0
|
2093 CONST struct symbol_value_forward *m)
|
|
|
2094 {
|
|
|
2095 int offset = ((char *)symbol_value_forward_forward (m)
|
|
|
2096 - (char *)&buffer_local_flags);
|
|
|
2097
|
|
|
2098 defvar_mumble (namestring, m, sizeof (*m));
|
|
|
2099
|
|
183
|
2100 *((Lisp_Object *)(offset + (char *)XBUFFER (Vbuffer_local_symbols)))
|
|
0
|
2101 = intern (namestring);
|
|
|
2102 }
|
|
|
2103
|
|
183
|
2104 /* DOC is ignored because it is snagged and recorded externally
|
|
0
|
2105 * by make-docfile */
|
|
185
|
2106 #define DEFVAR_BUFFER_DEFAULTS(lname, field_name) do { \
|
|
|
2107 static CONST_IF_NOT_DEBUG struct symbol_value_forward I_hate_C \
|
|
211
|
2108 = { { { symbol_value_forward_lheader_initializer, \
|
|
185
|
2109 (struct lcrecord_header *) &(buffer_local_flags.field_name), 69 }, \
|
|
|
2110 SYMVAL_DEFAULT_BUFFER_FORWARD }, 0 }; \
|
|
0
|
2111 defvar_mumble ((lname), &I_hate_C, sizeof (I_hate_C)); \
|
|
|
2112 } while (0)
|
|
|
2113
|
|
185
|
2114 #define DEFVAR_BUFFER_DEFAULTS_MAGIC(lname, field_name, magicfun) do { \
|
|
|
2115 static CONST_IF_NOT_DEBUG struct symbol_value_forward I_hate_C \
|
|
211
|
2116 = { { { symbol_value_forward_lheader_initializer, \
|
|
185
|
2117 (struct lcrecord_header *) &(buffer_local_flags.field_name), 69 }, \
|
|
|
2118 SYMVAL_DEFAULT_BUFFER_FORWARD }, magicfun }; \
|
|
0
|
2119 defvar_mumble ((lname), &I_hate_C, sizeof (I_hate_C)); \
|
|
|
2120 } while (0)
|
|
|
2121
|
|
|
2122 static void
|
|
|
2123 nuke_all_buffer_slots (struct buffer *b, Lisp_Object zap)
|
|
|
2124 {
|
|
|
2125 zero_lcrecord (b);
|
|
|
2126
|
|
|
2127 #define MARKED_SLOT(x) b->x = (zap);
|
|
|
2128 #include "bufslots.h"
|
|
|
2129 #undef MARKED_SLOT
|
|
|
2130 }
|
|
|
2131
|
|
|
2132 void
|
|
|
2133 complex_vars_of_buffer (void)
|
|
|
2134 {
|
|
|
2135 /* Make sure all markable slots in buffer_defaults
|
|
185
|
2136 are initialized reasonably, so mark_buffer won't choke. */
|
|
|
2137 struct buffer *defs = alloc_lcrecord_type (struct buffer, lrecord_buffer);
|
|
|
2138 struct buffer *syms = alloc_lcrecord_type (struct buffer, lrecord_buffer);
|
|
0
|
2139
|
|
|
2140 staticpro (&Vbuffer_defaults);
|
|
|
2141 staticpro (&Vbuffer_local_symbols);
|
|
|
2142 XSETBUFFER (Vbuffer_defaults, defs);
|
|
|
2143 XSETBUFFER (Vbuffer_local_symbols, syms);
|
|
183
|
2144
|
|
0
|
2145 nuke_all_buffer_slots (syms, Qnil);
|
|
|
2146 nuke_all_buffer_slots (defs, Qnil);
|
|
|
2147 defs->text = &defs->own_text;
|
|
|
2148 syms->text = &syms->own_text;
|
|
183
|
2149
|
|
0
|
2150 /* Set up the non-nil default values of various buffer slots.
|
|
185
|
2151 Must do these before making the first buffer. */
|
|
0
|
2152 defs->major_mode = Qfundamental_mode;
|
|
|
2153 defs->mode_name = QSFundamental;
|
|
|
2154 defs->abbrev_table = Qnil; /* real default setup by Lisp code */
|
|
|
2155 defs->downcase_table = Vascii_downcase_table;
|
|
|
2156 defs->upcase_table = Vascii_upcase_table;
|
|
|
2157 defs->case_canon_table = Vascii_canon_table;
|
|
|
2158 defs->case_eqv_table = Vascii_eqv_table;
|
|
70
|
2159 #ifdef MULE
|
|
|
2160 defs->mirror_downcase_table = Vmirror_ascii_downcase_table;
|
|
|
2161 defs->mirror_upcase_table = Vmirror_ascii_upcase_table;
|
|
|
2162 defs->mirror_case_canon_table = Vmirror_ascii_canon_table;
|
|
|
2163 defs->mirror_case_eqv_table = Vmirror_ascii_eqv_table;
|
|
272
|
2164 defs->category_table = Vstandard_category_table;
|
|
183
|
2165 #endif /* MULE */
|
|
0
|
2166 defs->syntax_table = Vstandard_syntax_table;
|
|
70
|
2167 defs->mirror_syntax_table =
|
|
|
2168 XCHAR_TABLE (Vstandard_syntax_table)->mirror_table;
|
|
0
|
2169 defs->modeline_format = build_string ("%-"); /* reset in loaddefs.el */
|
|
|
2170 defs->case_fold_search = Qt;
|
|
|
2171 defs->selective_display_ellipses = Qt;
|
|
|
2172 defs->tab_width = make_int (8);
|
|
|
2173 defs->ctl_arrow = Qt;
|
|
|
2174 defs->fill_column = make_int (70);
|
|
|
2175 defs->left_margin = Qzero;
|
|
272
|
2176 defs->saved_size = Qzero; /* lisp code wants int-or-nil */
|
|
0
|
2177 defs->modtime = 0;
|
|
|
2178 defs->auto_save_modified = 0;
|
|
|
2179 defs->auto_save_failure_time = -1;
|
|
|
2180 defs->invisibility_spec = Qt;
|
|
183
|
2181
|
|
207
|
2182 defs->indirect_children = Qnil;
|
|
|
2183 syms->indirect_children = Qnil;
|
|
|
2184
|
|
0
|
2185 {
|
|
|
2186 /* 0 means var is always local. Default used only at creation.
|
|
|
2187 * -1 means var is always local. Default used only at reset and
|
|
|
2188 * creation.
|
|
|
2189 * -2 means there's no lisp variable corresponding to this slot
|
|
|
2190 * and the default is only used at creation.
|
|
|
2191 * -3 means no Lisp variable. Default used only at reset and creation.
|
|
|
2192 * >0 is mask. Var is local if ((buffer->local_var_flags & mask) != 0)
|
|
|
2193 * Otherwise default is used.
|
|
|
2194 */
|
|
|
2195 Lisp_Object always_local_no_default = make_int (0);
|
|
|
2196 Lisp_Object always_local_resettable = make_int (-1);
|
|
|
2197 Lisp_Object resettable = make_int (-3);
|
|
183
|
2198
|
|
0
|
2199 /* Assign the local-flags to the slots that have default values.
|
|
|
2200 The local flag is a bit that is used in the buffer
|
|
|
2201 to say that it has its own local value for the slot.
|
|
|
2202 The local flag bits are in the local_var_flags slot of the
|
|
|
2203 buffer. */
|
|
183
|
2204
|
|
0
|
2205 nuke_all_buffer_slots (&buffer_local_flags, make_int (-2));
|
|
|
2206 buffer_local_flags.filename = always_local_no_default;
|
|
|
2207 buffer_local_flags.directory = always_local_no_default;
|
|
|
2208 buffer_local_flags.backed_up = always_local_no_default;
|
|
272
|
2209 buffer_local_flags.saved_size = always_local_no_default;
|
|
0
|
2210 buffer_local_flags.auto_save_file_name = always_local_no_default;
|
|
|
2211 buffer_local_flags.read_only = always_local_no_default;
|
|
183
|
2212
|
|
0
|
2213 buffer_local_flags.major_mode = always_local_resettable;
|
|
|
2214 buffer_local_flags.mode_name = always_local_resettable;
|
|
|
2215 buffer_local_flags.undo_list = always_local_no_default;
|
|
|
2216 #if 0 /* FSFmacs */
|
|
|
2217 buffer_local_flags.mark_active = always_local_resettable;
|
|
|
2218 #endif
|
|
|
2219 buffer_local_flags.point_before_scroll = always_local_resettable;
|
|
|
2220 buffer_local_flags.file_truename = always_local_no_default;
|
|
|
2221 buffer_local_flags.invisibility_spec = always_local_resettable;
|
|
|
2222 buffer_local_flags.file_format = always_local_resettable;
|
|
|
2223 buffer_local_flags.generated_modeline_string = always_local_no_default;
|
|
183
|
2224
|
|
0
|
2225 buffer_local_flags.keymap = resettable;
|
|
|
2226 buffer_local_flags.downcase_table = resettable;
|
|
|
2227 buffer_local_flags.upcase_table = resettable;
|
|
|
2228 buffer_local_flags.case_canon_table = resettable;
|
|
|
2229 buffer_local_flags.case_eqv_table = resettable;
|
|
|
2230 buffer_local_flags.syntax_table = resettable;
|
|
70
|
2231 #ifdef MULE
|
|
|
2232 buffer_local_flags.category_table = resettable;
|
|
|
2233 #endif
|
|
183
|
2234
|
|
0
|
2235 buffer_local_flags.modeline_format = make_int (1);
|
|
|
2236 buffer_local_flags.abbrev_mode = make_int (2);
|
|
|
2237 buffer_local_flags.overwrite_mode = make_int (4);
|
|
|
2238 buffer_local_flags.case_fold_search = make_int (8);
|
|
|
2239 buffer_local_flags.auto_fill_function = make_int (0x10);
|
|
|
2240 buffer_local_flags.selective_display = make_int (0x20);
|
|
|
2241 buffer_local_flags.selective_display_ellipses = make_int (0x40);
|
|
|
2242 buffer_local_flags.tab_width = make_int (0x80);
|
|
|
2243 buffer_local_flags.truncate_lines = make_int (0x100);
|
|
|
2244 buffer_local_flags.ctl_arrow = make_int (0x200);
|
|
|
2245 buffer_local_flags.fill_column = make_int (0x400);
|
|
|
2246 buffer_local_flags.left_margin = make_int (0x800);
|
|
|
2247 buffer_local_flags.abbrev_table = make_int (0x1000);
|
|
|
2248 #ifdef REGION_CACHE_NEEDS_WORK
|
|
|
2249 buffer_local_flags.cache_long_line_scans = make_int (0x2000);
|
|
|
2250 #endif
|
|
259
|
2251 #ifdef FILE_CODING
|
|
284
|
2252 buffer_local_flags.buffer_file_coding_system = make_int (0x4000);
|
|
70
|
2253 #endif
|
|
183
|
2254
|
|
0
|
2255 /* #### Warning, 0x4000000 (that's six zeroes) is the largest number
|
|
|
2256 currently allowable due to the XINT() handling of this value.
|
|
|
2257 With some rearrangement you can get 4 more bits. */
|
|
|
2258 }
|
|
|
2259
|
|
|
2260 DEFVAR_BUFFER_DEFAULTS ("default-modeline-format", modeline_format /*
|
|
|
2261 Default value of `modeline-format' for buffers that don't override it.
|
|
|
2262 This is the same as (default-value 'modeline-format).
|
|
|
2263 */ );
|
|
|
2264
|
|
|
2265 DEFVAR_BUFFER_DEFAULTS ("default-abbrev-mode", abbrev_mode /*
|
|
|
2266 Default value of `abbrev-mode' for buffers that do not override it.
|
|
|
2267 This is the same as (default-value 'abbrev-mode).
|
|
|
2268 */ );
|
|
|
2269
|
|
|
2270 DEFVAR_BUFFER_DEFAULTS ("default-ctl-arrow", ctl_arrow /*
|
|
|
2271 Default value of `ctl-arrow' for buffers that do not override it.
|
|
|
2272 This is the same as (default-value 'ctl-arrow).
|
|
|
2273 */ );
|
|
|
2274
|
|
|
2275 #if 0 /* #### make this a specifier! */
|
|
|
2276 DEFVAR_BUFFER_DEFAULTS ("default-display-direction", display_direction /*
|
|
|
2277 Default display-direction for buffers that do not override it.
|
|
|
2278 This is the same as (default-value 'display-direction).
|
|
|
2279 Note: This is not yet implemented.
|
|
|
2280 */ );
|
|
|
2281 #endif
|
|
|
2282
|
|
|
2283 DEFVAR_BUFFER_DEFAULTS ("default-truncate-lines", truncate_lines /*
|
|
|
2284 Default value of `truncate-lines' for buffers that do not override it.
|
|
|
2285 This is the same as (default-value 'truncate-lines).
|
|
|
2286 */ );
|
|
|
2287
|
|
|
2288 DEFVAR_BUFFER_DEFAULTS ("default-fill-column", fill_column /*
|
|
|
2289 Default value of `fill-column' for buffers that do not override it.
|
|
|
2290 This is the same as (default-value 'fill-column).
|
|
|
2291 */ );
|
|
|
2292
|
|
|
2293 DEFVAR_BUFFER_DEFAULTS ("default-left-margin", left_margin /*
|
|
|
2294 Default value of `left-margin' for buffers that do not override it.
|
|
|
2295 This is the same as (default-value 'left-margin).
|
|
|
2296 */ );
|
|
|
2297
|
|
|
2298 DEFVAR_BUFFER_DEFAULTS ("default-tab-width", tab_width /*
|
|
|
2299 Default value of `tab-width' for buffers that do not override it.
|
|
|
2300 This is the same as (default-value 'tab-width).
|
|
|
2301 */ );
|
|
|
2302
|
|
|
2303 DEFVAR_BUFFER_DEFAULTS ("default-case-fold-search", case_fold_search /*
|
|
|
2304 Default value of `case-fold-search' for buffers that don't override it.
|
|
|
2305 This is the same as (default-value 'case-fold-search).
|
|
|
2306 */ );
|
|
|
2307
|
|
|
2308 DEFVAR_BUFFER_LOCAL ("modeline-format", modeline_format /*
|
|
|
2309 Template for displaying modeline for current buffer.
|
|
|
2310 Each buffer has its own value of this variable.
|
|
|
2311 Value may be a string, a symbol or a list or cons cell.
|
|
|
2312 For a symbol, its value is used (but it is ignored if t or nil).
|
|
|
2313 A string appearing directly as the value of a symbol is processed verbatim
|
|
|
2314 in that the %-constructs below are not recognized.
|
|
|
2315 For a glyph, it is inserted as is.
|
|
|
2316 For a list whose car is a symbol, the symbol's value is taken,
|
|
|
2317 and if that is non-nil, the cadr of the list is processed recursively.
|
|
|
2318 Otherwise, the caddr of the list (if there is one) is processed.
|
|
|
2319 For a list whose car is a string or list, each element is processed
|
|
|
2320 recursively and the results are effectively concatenated.
|
|
|
2321 For a list whose car is an integer, the cdr of the list is processed
|
|
|
2322 and padded (if the number is positive) or truncated (if negative)
|
|
|
2323 to the width specified by that number.
|
|
|
2324 For a list whose car is an extent, the cdr of the list is processed
|
|
|
2325 normally but the results are displayed using the face of the
|
|
|
2326 extent, and mouse clicks over this section are processed using the
|
|
|
2327 keymap of the extent. (In addition, if the extent has a help-echo
|
|
|
2328 property, that string will be echoed when the mouse moves over this
|
|
|
2329 section.) See `generated-modeline-string' for more information.
|
|
|
2330 For a list whose car is a face, the cdr of the list is processed
|
|
|
2331 normally but the results will be displayed using the face in the car.
|
|
|
2332 For a list whose car is a keymap, the cdr of the list is processed
|
|
|
2333 normally but the keymap will apply for mouse clicks over the results,
|
|
|
2334 in addition to `modeline-map'. Nested keymap specifications are
|
|
|
2335 handled properly.
|
|
|
2336 A string is printed verbatim in the modeline except for %-constructs:
|
|
|
2337 (%-constructs are processed when the string is the entire modeline-format
|
|
|
2338 or when it is found in a cons-cell or a list)
|
|
|
2339 %b -- print buffer name. %c -- print the current column number.
|
|
|
2340 %f -- print visited file name.
|
|
|
2341 %* -- print %, * or hyphen. %+ -- print *, % or hyphen.
|
|
|
2342 % means buffer is read-only and * means it is modified.
|
|
|
2343 For a modified read-only buffer, %* gives % and %+ gives *.
|
|
|
2344 %s -- print process status. %l -- print the current line number.
|
|
|
2345 %S -- print name of selected frame (only meaningful under X Windows).
|
|
|
2346 %p -- print percent of buffer above top of window, or Top, Bot or All.
|
|
|
2347 %P -- print percent of buffer above bottom of window, perhaps plus Top,
|
|
|
2348 or print Bottom or All.
|
|
|
2349 %n -- print Narrow if appropriate.
|
|
110
|
2350 %C -- under XEmacs/mule, print the mnemonic for `buffer-file-coding-system'.
|
|
0
|
2351 %[ -- print one [ for each recursive editing level. %] similar.
|
|
|
2352 %% -- print %. %- -- print infinitely many dashes.
|
|
14
|
2353 Decimal digits after the % specify field width to which to pad.
|
|
|
2354 */ );
|
|
0
|
2355
|
|
|
2356 DEFVAR_BUFFER_DEFAULTS ("default-major-mode", major_mode /*
|
|
|
2357 *Major mode for new buffers. Defaults to `fundamental-mode'.
|
|
|
2358 nil here means use current buffer's major mode.
|
|
|
2359 */ );
|
|
|
2360
|
|
|
2361 DEFVAR_BUFFER_DEFAULTS ("fundamental-mode-abbrev-table", abbrev_table /*
|
|
|
2362 The abbrev table of mode-specific abbrevs for Fundamental Mode.
|
|
|
2363 */ );
|
|
|
2364
|
|
|
2365 DEFVAR_BUFFER_LOCAL ("major-mode", major_mode /*
|
|
|
2366 Symbol for current buffer's major mode.
|
|
|
2367 */ );
|
|
|
2368
|
|
|
2369 DEFVAR_BUFFER_LOCAL ("mode-name", mode_name /*
|
|
|
2370 Pretty name of current buffer's major mode (a string).
|
|
|
2371 */ );
|
|
|
2372
|
|
|
2373 DEFVAR_BUFFER_LOCAL ("abbrev-mode", abbrev_mode /*
|
|
|
2374 Non-nil turns on automatic expansion of abbrevs as they are inserted.
|
|
|
2375 Automatically becomes buffer-local when set in any fashion.
|
|
|
2376 */ );
|
|
|
2377
|
|
|
2378 DEFVAR_BUFFER_LOCAL ("case-fold-search", case_fold_search /*
|
|
|
2379 *Non-nil if searches should ignore case.
|
|
|
2380 Automatically becomes buffer-local when set in any fashion.
|
|
70
|
2381
|
|
|
2382 BUG: Under XEmacs/Mule, translations to or from non-ASCII characters
|
|
|
2383 (this includes chars in the range 128 - 255) are ignored by
|
|
|
2384 the string/buffer-searching routines. Thus, `case-fold-search'
|
|
|
2385 will not correctly conflate a-umlaut and A-umlaut even if the
|
|
|
2386 case tables call for this.
|
|
0
|
2387 */ );
|
|
|
2388
|
|
|
2389 DEFVAR_BUFFER_LOCAL ("fill-column", fill_column /*
|
|
|
2390 *Column beyond which automatic line-wrapping should happen.
|
|
|
2391 Automatically becomes buffer-local when set in any fashion.
|
|
|
2392 */ );
|
|
|
2393
|
|
|
2394 DEFVAR_BUFFER_LOCAL ("left-margin", left_margin /*
|
|
|
2395 *Column for the default indent-line-function to indent to.
|
|
|
2396 Linefeed indents to this column in Fundamental mode.
|
|
|
2397 Automatically becomes buffer-local when set in any fashion.
|
|
|
2398 Do not confuse this with the specifier `left-margin-width';
|
|
|
2399 that controls the size of a margin that is displayed outside
|
|
|
2400 of the text area.
|
|
|
2401 */ );
|
|
|
2402
|
|
|
2403 DEFVAR_BUFFER_LOCAL_MAGIC ("tab-width", tab_width /*
|
|
|
2404 *Distance between tab stops (for display of tab characters), in columns.
|
|
|
2405 Automatically becomes buffer-local when set in any fashion.
|
|
|
2406 */ , redisplay_variable_changed);
|
|
|
2407
|
|
|
2408 DEFVAR_BUFFER_LOCAL_MAGIC ("ctl-arrow", ctl_arrow /*
|
|
|
2409 *Non-nil means display control chars with uparrow.
|
|
|
2410 Nil means use backslash and octal digits.
|
|
|
2411 An integer means characters >= ctl-arrow are assumed to be printable, and
|
|
|
2412 will be displayed as a single glyph.
|
|
|
2413 Any other value is the same as 160 - the code SPC with the high bit on.
|
|
|
2414
|
|
|
2415 The interpretation of this variable is likely to change in the future.
|
|
|
2416
|
|
|
2417 Automatically becomes buffer-local when set in any fashion.
|
|
|
2418 This variable does not apply to characters whose display is specified
|
|
|
2419 in the current display table (if there is one).
|
|
|
2420 */ , redisplay_variable_changed);
|
|
|
2421
|
|
|
2422 #if 0 /* #### Make this a specifier! */
|
|
|
2423 xxDEFVAR_BUFFER_LOCAL ("display-direction", display_direction /*
|
|
|
2424 *Non-nil means lines in the buffer are displayed right to left.
|
|
|
2425 Nil means left to right. (Not yet implemented.)
|
|
|
2426 */ );
|
|
183
|
2427 #endif /* Not yet implemented */
|
|
0
|
2428
|
|
|
2429 DEFVAR_BUFFER_LOCAL_MAGIC ("truncate-lines", truncate_lines /*
|
|
|
2430 *Non-nil means do not display continuation lines;
|
|
|
2431 give each line of text one frame line.
|
|
|
2432 Automatically becomes buffer-local when set in any fashion.
|
|
|
2433
|
|
|
2434 Note that this is overridden by the variable
|
|
|
2435 `truncate-partial-width-windows' if that variable is non-nil
|
|
|
2436 and this buffer is not full-frame width.
|
|
2
|
2437 */ , redisplay_variable_changed);
|
|
0
|
2438
|
|
|
2439 DEFVAR_BUFFER_LOCAL ("default-directory", directory /*
|
|
|
2440 Name of default directory of current buffer. Should end with slash.
|
|
|
2441 Each buffer has its own value of this variable.
|
|
|
2442 */ );
|
|
|
2443
|
|
259
|
2444 #ifdef FILE_CODING
|
|
110
|
2445 DEFVAR_BUFFER_DEFAULTS ("default-buffer-file-coding-system", buffer_file_coding_system /*
|
|
|
2446 Default value of `buffer-file-coding-system' for buffers that do not override it.
|
|
|
2447 This is the same as (default-value 'buffer-file-coding-system).
|
|
70
|
2448 This value is used both for buffers without associated files and
|
|
|
2449 for buffers whose files do not have any apparent coding system.
|
|
110
|
2450 See `buffer-file-coding-system'.
|
|
70
|
2451 */ );
|
|
|
2452
|
|
110
|
2453 DEFVAR_BUFFER_LOCAL ("buffer-file-coding-system", buffer_file_coding_system /*
|
|
70
|
2454 *Current coding system for the current buffer.
|
|
120
|
2455 When the buffer is written out into a file, this coding system will be
|
|
|
2456 used for the encoding. Automatically buffer-local when set in any
|
|
|
2457 fashion. This is normally set automatically when a file is loaded in
|
|
|
2458 based on the determined coding system of the file (assuming that
|
|
207
|
2459 `buffer-file-coding-system-for-read' is set to `undecided', which
|
|
|
2460 calls for automatic determination of the file's coding system).
|
|
120
|
2461 Normally the modeline indicates the current file coding system using
|
|
|
2462 its mnemonic abbreviation.
|
|
70
|
2463
|
|
|
2464 The default value for this variable (which is normally used for
|
|
|
2465 buffers without associated files) is also used when automatic
|
|
|
2466 detection of a file's encoding is called for and there was no
|
|
|
2467 discernable encoding in the file (i.e. it was entirely or almost
|
|
|
2468 entirely ASCII). The default value should generally *not* be set to
|
|
|
2469 nil (equivalent to `no-conversion'), because if extended characters
|
|
|
2470 are ever inserted into the buffer, they will be lost when the file is
|
|
|
2471 written out. A good choice is `iso-2022-8' (the simple ISO 2022 8-bit
|
|
|
2472 encoding), which will write out ASCII and Latin-1 characters in the
|
|
|
2473 standard (and highly portable) fashion and use standard escape
|
|
|
2474 sequences for other charsets. Another reasonable choice is
|
|
|
2475 `escape-quoted', which is equivalent to `iso-2022-8' but prefixes
|
|
|
2476 certain control characters with ESC to make sure they are not
|
|
|
2477 interpreted as escape sequences when read in. This latter coding
|
|
185
|
2478 system results in more "correct" output in the presence of control
|
|
70
|
2479 characters in the buffer, in the sense that when read in again using
|
|
|
2480 the same coding system, the result will virtually always match the
|
|
|
2481 original contents of the buffer, which is not the case with
|
|
|
2482 `iso-2022-8'; but the output is less portable when dealing with binary
|
|
|
2483 data -- there may be stray ESC characters when the file is read by
|
|
|
2484 another program.
|
|
|
2485
|
|
110
|
2486 `buffer-file-coding-system' does *not* control the coding system used when
|
|
|
2487 a file is read in. Use the variables `buffer-file-coding-system-for-read'
|
|
|
2488 and `buffer-file-coding-system-alist' for that. From a Lisp program, if
|
|
70
|
2489 you wish to unilaterally specify the coding system used for one
|
|
|
2490 particular operation, you should bind the variable
|
|
108
|
2491 `coding-system-for-read' rather than changing the other two
|
|
70
|
2492 variables just mentioned, which are intended to be used for
|
|
261
|
2493 global environment specification.
|
|
|
2494 */ );
|
|
259
|
2495 #endif
|
|
70
|
2496
|
|
0
|
2497 DEFVAR_BUFFER_LOCAL ("auto-fill-function", auto_fill_function /*
|
|
|
2498 Function called (if non-nil) to perform auto-fill.
|
|
|
2499 It is called after self-inserting a space at a column beyond `fill-column'.
|
|
|
2500 Each buffer has its own value of this variable.
|
|
|
2501 NOTE: This variable is not an ordinary hook;
|
|
|
2502 It may not be a list of functions.
|
|
|
2503 */ );
|
|
|
2504
|
|
|
2505 DEFVAR_BUFFER_LOCAL ("buffer-file-name", filename /*
|
|
|
2506 Name of file visited in current buffer, or nil if not visiting a file.
|
|
|
2507 Each buffer has its own value of this variable.
|
|
|
2508 */ );
|
|
|
2509
|
|
|
2510 #if 0 /* FSFmacs */
|
|
|
2511 /*
|
|
|
2512 Abbreviated truename of file visited in current buffer, or nil if none.
|
|
|
2513 The truename of a file is calculated by `file-truename'
|
|
|
2514 and then abbreviated with `abbreviate-file-name'.
|
|
|
2515 Each buffer has its own value of this variable.
|
|
|
2516 */
|
|
|
2517 #endif /* FSFmacs */
|
|
|
2518
|
|
|
2519 DEFVAR_BUFFER_LOCAL ("buffer-file-truename", file_truename /*
|
|
183
|
2520 The real name of the file visited in the current buffer,
|
|
|
2521 or nil if not visiting a file. This is the result of passing
|
|
|
2522 buffer-file-name to the `file-truename' function. Every buffer has
|
|
|
2523 its own value of this variable. This variable is automatically
|
|
|
2524 maintained by the functions that change the file name associated
|
|
0
|
2525 with a buffer.
|
|
|
2526 */ );
|
|
|
2527
|
|
|
2528 DEFVAR_BUFFER_LOCAL ("buffer-auto-save-file-name", auto_save_file_name /*
|
|
|
2529 Name of file for auto-saving current buffer,
|
|
|
2530 or nil if buffer should not be auto-saved.
|
|
|
2531 Each buffer has its own value of this variable.
|
|
|
2532 */ );
|
|
|
2533
|
|
|
2534 DEFVAR_BUFFER_LOCAL ("buffer-read-only", read_only /*
|
|
|
2535 Non-nil if this buffer is read-only.
|
|
|
2536 Each buffer has its own value of this variable.
|
|
|
2537 */ );
|
|
|
2538
|
|
|
2539 DEFVAR_BUFFER_LOCAL ("buffer-backed-up", backed_up /*
|
|
|
2540 Non-nil if this buffer's file has been backed up.
|
|
|
2541 Backing up is done before the first time the file is saved.
|
|
|
2542 Each buffer has its own value of this variable.
|
|
|
2543 */ );
|
|
|
2544
|
|
272
|
2545 DEFVAR_BUFFER_LOCAL ("buffer-saved-size", saved_size /*
|
|
0
|
2546 Length of current buffer when last read in, saved or auto-saved.
|
|
|
2547 0 initially.
|
|
|
2548 Each buffer has its own value of this variable.
|
|
|
2549 */ );
|
|
|
2550
|
|
|
2551 DEFVAR_BUFFER_LOCAL_MAGIC ("selective-display", selective_display /*
|
|
|
2552 Non-nil enables selective display:
|
|
|
2553 Integer N as value means display only lines
|
|
|
2554 that start with less than n columns of space.
|
|
|
2555 A value of t means, after a ^M, all the rest of the line is invisible.
|
|
|
2556 Then ^M's in the file are written into files as newlines.
|
|
|
2557
|
|
|
2558 Automatically becomes buffer-local when set in any fashion.
|
|
|
2559 */, redisplay_variable_changed);
|
|
|
2560
|
|
|
2561 #ifndef old
|
|
|
2562 DEFVAR_BUFFER_LOCAL_MAGIC ("selective-display-ellipses",
|
|
|
2563 selective_display_ellipses /*
|
|
|
2564 t means display ... on previous line when a line is invisible.
|
|
|
2565 Automatically becomes buffer-local when set in any fashion.
|
|
|
2566 */, redisplay_variable_changed);
|
|
|
2567 #endif
|
|
|
2568
|
|
|
2569 DEFVAR_BUFFER_LOCAL ("local-abbrev-table", abbrev_table /*
|
|
|
2570 Local (mode-specific) abbrev table of current buffer.
|
|
|
2571 */ );
|
|
|
2572
|
|
|
2573 DEFVAR_BUFFER_LOCAL ("overwrite-mode", overwrite_mode /*
|
|
|
2574 Non-nil if self-insertion should replace existing text.
|
|
|
2575 The value should be one of `overwrite-mode-textual',
|
|
|
2576 `overwrite-mode-binary', or nil.
|
|
|
2577 If it is `overwrite-mode-textual', self-insertion still
|
|
|
2578 inserts at the end of a line, and inserts when point is before a tab,
|
|
|
2579 until the tab is filled in.
|
|
|
2580 If `overwrite-mode-binary', self-insertion replaces newlines and tabs too.
|
|
|
2581 Automatically becomes buffer-local when set in any fashion.
|
|
278
|
2582
|
|
|
2583 Normally, you shouldn't modify this variable by hand, but use the functions
|
|
|
2584 `overwrite-mode' and `binary-overwrite-mode' instead. However, you can
|
|
|
2585 customize the default value from the options menu.
|
|
0
|
2586 */ );
|
|
|
2587
|
|
|
2588 #if 0 /* FSFmacs */
|
|
|
2589 /* Adds the following to the doc string for buffer-undo-list:
|
|
|
2590
|
|
|
2591 An entry (nil PROPERTY VALUE BEG . END) indicates that a text property
|
|
|
2592 was modified between BEG and END. PROPERTY is the property name,
|
|
|
2593 and VALUE is the old value.
|
|
|
2594 */
|
|
183
|
2595 #endif /* FSFmacs */
|
|
0
|
2596
|
|
|
2597 DEFVAR_BUFFER_LOCAL ("buffer-undo-list", undo_list /*
|
|
|
2598 List of undo entries in current buffer.
|
|
|
2599 Recent changes come first; older changes follow newer.
|
|
|
2600
|
|
|
2601 An entry (BEG . END) represents an insertion which begins at
|
|
|
2602 position BEG and ends at position END.
|
|
|
2603
|
|
|
2604 An entry (TEXT . POSITION) represents the deletion of the string TEXT
|
|
|
2605 from (abs POSITION). If POSITION is positive, point was at the front
|
|
|
2606 of the text being deleted; if negative, point was at the end.
|
|
|
2607
|
|
|
2608 An entry (t HIGH . LOW) indicates that the buffer previously had
|
|
185
|
2609 "unmodified" status. HIGH and LOW are the high and low 16-bit portions
|
|
0
|
2610 of the visited file's modification time, as of that time. If the
|
|
|
2611 modification time of the most recent save is different, this entry is
|
|
|
2612 obsolete.
|
|
|
2613
|
|
|
2614 An entry of the form EXTENT indicates that EXTENT was attached in
|
|
|
2615 the buffer. Undoing an entry of this form detaches EXTENT.
|
|
|
2616
|
|
|
2617 An entry of the form (EXTENT START END) indicates that EXTENT was
|
|
|
2618 detached from the buffer. Undoing an entry of this form attaches
|
|
|
2619 EXTENT from START to END.
|
|
|
2620
|
|
|
2621 An entry of the form POSITION indicates that point was at the buffer
|
|
|
2622 location given by the integer. Undoing an entry of this form places
|
|
|
2623 point at POSITION.
|
|
|
2624
|
|
|
2625 nil marks undo boundaries. The undo command treats the changes
|
|
|
2626 between two undo boundaries as a single step to be undone.
|
|
|
2627
|
|
|
2628 If the value of the variable is t, undo information is not recorded.
|
|
|
2629 */ );
|
|
|
2630
|
|
|
2631 #if 0 /* FSFmacs */
|
|
|
2632 xxDEFVAR_BUFFER_LOCAL ("mark-active", mark_active /*
|
|
|
2633 Non-nil means the mark and region are currently active in this buffer.
|
|
|
2634 Automatically local in all buffers.
|
|
|
2635 */ );
|
|
183
|
2636 #endif /* FSFmacs */
|
|
0
|
2637
|
|
|
2638 #ifdef REGION_CACHE_NEEDS_WORK
|
|
|
2639 xxDEFVAR_BUFFER_LOCAL ("cache-long-line-scans", cache_long_line_scans /*
|
|
|
2640 Non-nil means that Emacs should use caches to handle long lines more quickly.
|
|
|
2641 This variable is buffer-local, in all buffers.
|
|
|
2642
|
|
|
2643 Normally, the line-motion functions work by scanning the buffer for
|
|
|
2644 newlines. Columnar operations (like move-to-column and
|
|
|
2645 compute-motion) also work by scanning the buffer, summing character
|
|
|
2646 widths as they go. This works well for ordinary text, but if the
|
|
|
2647 buffer's lines are very long (say, more than 500 characters), these
|
|
|
2648 motion functions will take longer to execute. Emacs may also take
|
|
|
2649 longer to update the display.
|
|
|
2650
|
|
|
2651 If cache-long-line-scans is non-nil, these motion functions cache the
|
|
|
2652 results of their scans, and consult the cache to avoid rescanning
|
|
|
2653 regions of the buffer until the text is modified. The caches are most
|
|
|
2654 beneficial when they prevent the most searching---that is, when the
|
|
|
2655 buffer contains long lines and large regions of characters with the
|
|
|
2656 same, fixed screen width.
|
|
|
2657
|
|
|
2658 When cache-long-line-scans is non-nil, processing short lines will
|
|
|
2659 become slightly slower (because of the overhead of consulting the
|
|
|
2660 cache), and the caches will use memory roughly proportional to the
|
|
|
2661 number of newlines and characters whose screen width varies.
|
|
|
2662
|
|
|
2663 The caches require no explicit maintenance; their accuracy is
|
|
|
2664 maintained internally by the Emacs primitives. Enabling or disabling
|
|
|
2665 the cache should not affect the behavior of any of the motion
|
|
|
2666 functions; it should only affect their performance.
|
|
|
2667 */ );
|
|
|
2668 #endif /* REGION_CACHE_NEEDS_WORK */
|
|
|
2669
|
|
|
2670 DEFVAR_BUFFER_LOCAL ("point-before-scroll", point_before_scroll /*
|
|
|
2671 Value of point before the last series of scroll operations, or nil.
|
|
|
2672 */ );
|
|
|
2673
|
|
|
2674 DEFVAR_BUFFER_LOCAL ("buffer-file-format", file_format /*
|
|
|
2675 List of formats to use when saving this buffer.
|
|
|
2676 Formats are defined by `format-alist'. This variable is
|
|
|
2677 set when a file is visited. Automatically local in all buffers.
|
|
|
2678 */ );
|
|
|
2679
|
|
|
2680 DEFVAR_BUFFER_LOCAL_MAGIC ("buffer-invisibility-spec", invisibility_spec /*
|
|
|
2681 Invisibility spec of this buffer.
|
|
|
2682 The default is t, which means that text is invisible
|
|
|
2683 if it has (or is covered by an extent with) a non-nil `invisible' property.
|
|
|
2684 If the value is a list, a text character is invisible if its `invisible'
|
|
|
2685 property is an element in that list.
|
|
|
2686 If an element is a cons cell of the form (PROP . ELLIPSIS),
|
|
|
2687 then characters with property value PROP are invisible,
|
|
|
2688 and they have an ellipsis as well if ELLIPSIS is non-nil.
|
|
|
2689 Note that the actual characters used for the ellipsis are controllable
|
|
185
|
2690 using `invisible-text-glyph', and default to "...".
|
|
0
|
2691 */, redisplay_variable_changed);
|
|
|
2692
|
|
|
2693 DEFVAR_CONST_BUFFER_LOCAL ("generated-modeline-string",
|
|
|
2694 generated_modeline_string /*
|
|
|
2695 String of characters in this buffer's modeline as of the last redisplay.
|
|
|
2696 Each time the modeline is recomputed, the resulting characters are
|
|
|
2697 stored in this string, which is resized as necessary. You may not
|
|
|
2698 set this variable, and modifying this string will not change the
|
|
|
2699 modeline; you have to change `modeline-format' if you want that.
|
|
|
2700
|
|
|
2701 For each extent in `modeline-format' that is encountered when
|
|
|
2702 processing the modeline, a corresponding extent is placed in
|
|
|
2703 `generated-modeline-string' and covers the text over which the
|
|
|
2704 extent in `modeline-format' applies. The extent in
|
|
|
2705 `generated-modeline-string' is made a child of the extent in
|
|
|
2706 `modeline-format', which means that it inherits all properties from
|
|
|
2707 that extent. Note that the extents in `generated-modeline-string'
|
|
|
2708 are managed automatically. You should not explicitly put any extents
|
|
|
2709 in `generated-modeline-string'; if you do, they will disappear the
|
|
|
2710 next time the modeline is processed.
|
|
|
2711
|
|
|
2712 For extents in `modeline-format', the following properties are currently
|
|
|
2713 handled:
|
|
|
2714
|
|
|
2715 `face'
|
|
|
2716 Affects the face of the modeline text. Currently, faces do
|
|
|
2717 not merge properly; only the most recently encountered face
|
|
|
2718 is used. This is a bug.
|
|
|
2719
|
|
|
2720 `keymap'
|
|
|
2721 Affects the disposition of button events over the modeline
|
|
|
2722 text. Multiple applicable keymaps *are* handled properly,
|
|
|
2723 and `modeline-map' still applies to any events that don't
|
|
|
2724 have bindings in extent-specific keymaps.
|
|
|
2725
|
|
|
2726 `help-echo'
|
|
|
2727 If a string, causes the string to be displayed when the mouse
|
|
|
2728 moves over the text.
|
|
|
2729 */ );
|
|
|
2730
|
|
|
2731 /* Check for DEFVAR_BUFFER_LOCAL without initializing the corresponding
|
|
|
2732 slot of buffer_local_flags and vice-versa. Must be done after all
|
|
|
2733 DEFVAR_BUFFER_LOCAL() calls. */
|
|
|
2734 #define MARKED_SLOT(slot) \
|
|
|
2735 if ((XINT (buffer_local_flags.slot) != -2 && \
|
|
272
|
2736 XINT (buffer_local_flags.slot) != -3) \
|
|
0
|
2737 != !(NILP (XBUFFER (Vbuffer_local_symbols)->slot))) \
|
|
|
2738 abort ()
|
|
|
2739 #include "bufslots.h"
|
|
|
2740 #undef MARKED_SLOT
|
|
|
2741
|
|
|
2742 {
|
|
272
|
2743 Lisp_Object scratch = Fget_buffer_create (QSscratch);
|
|
|
2744 Fset_buffer (scratch);
|
|
0
|
2745 /* Want no undo records for *scratch* until after Emacs is dumped */
|
|
|
2746 Fbuffer_disable_undo (scratch);
|
|
|
2747 }
|
|
|
2748 }
|
|
|
2749
|
|
|
2750 void
|
|
288
|
2751 init_initial_directory (void)
|
|
0
|
2752 {
|
|
|
2753 /* This function can GC */
|
|
288
|
2754
|
|
0
|
2755 char *pwd;
|
|
371
|
2756 struct stat dotstat, pwdstat;
|
|
|
2757 int rc;
|
|
0
|
2758
|
|
288
|
2759 initial_directory[0] = 0;
|
|
0
|
2760
|
|
163
|
2761 /* If PWD is accurate, use it instead of calling getcwd. This is faster
|
|
0
|
2762 when PWD is right, and may avoid a fatal error. */
|
|
371
|
2763 if ((pwd = getenv ("PWD")) != 0 && IS_DIRECTORY_SEP (*pwd)
|
|
|
2764 && stat (pwd, &pwdstat) == 0
|
|
|
2765 && stat (".", &dotstat) == 0
|
|
|
2766 && dotstat.st_ino == pwdstat.st_ino
|
|
|
2767 && dotstat.st_dev == pwdstat.st_dev
|
|
|
2768 && (int) strlen (pwd) < MAXPATHLEN)
|
|
288
|
2769 strcpy (initial_directory, pwd);
|
|
|
2770 else if (getcwd (initial_directory, MAXPATHLEN) == NULL)
|
|
163
|
2771 fatal ("`getcwd' failed: %s\n", strerror (errno));
|
|
0
|
2772
|
|
371
|
2773 /* Maybe this should really use some standard subroutine
|
|
0
|
2774 whose definition is filename syntax dependent. */
|
|
371
|
2775 rc = strlen (initial_directory);
|
|
|
2776 if (!(IS_DIRECTORY_SEP (initial_directory[rc - 1])))
|
|
|
2777 {
|
|
|
2778 initial_directory[rc] = DIRECTORY_SEP;
|
|
|
2779 initial_directory[rc + 1] = '\0';
|
|
|
2780 }
|
|
209
|
2781 /* XEmacs change: store buffer's default directory
|
|
|
2782 using prefered (i.e. as defined at compile-time)
|
|
|
2783 directory separator. --marcpa */
|
|
|
2784 #ifdef DOS_NT
|
|
|
2785 #define CORRECT_DIR_SEPS(s) \
|
|
|
2786 do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \
|
|
|
2787 else unixtodos_filename (s); \
|
|
|
2788 } while (0)
|
|
272
|
2789
|
|
288
|
2790 CORRECT_DIR_SEPS(initial_directory);
|
|
209
|
2791 #endif
|
|
288
|
2792 }
|
|
|
2793
|
|
|
2794 void
|
|
|
2795 init_buffer (void)
|
|
|
2796 {
|
|
|
2797 /* This function can GC */
|
|
|
2798
|
|
|
2799 Fset_buffer (Fget_buffer_create (QSscratch));
|
|
|
2800
|
|
371
|
2801 current_buffer->directory = build_string (initial_directory);
|
|
0
|
2802
|
|
|
2803 #if 0 /* FSFmacs */
|
|
|
2804 /* #### is this correct? */
|
|
|
2805 temp = get_minibuffer (0);
|
|
|
2806 XBUFFER (temp)->directory = current_buffer->directory;
|
|
183
|
2807 #endif /* FSFmacs */
|
|
0
|
2808 }
|
