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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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72 #include "commands.h"
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73 #include "elhash.h"
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74 #include "extents.h"
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75 #include "faces.h"
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76 #include "frame.h"
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77 #include "insdel.h"
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78 #include "process.h" /* for kill_buffer_processes */
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79 #ifdef REGION_CACHE_NEEDS_WORK
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80 #include "region-cache.h"
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81 #endif
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82 #include "symeval.h"
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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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100 default values in buffer_defaults.
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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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110 slot in buffer_defaults is not used except to initialize newly-created
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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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117 If a slot is -2, there is no DEFVAR_BUFFER_LOCAL for it.
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118 (The slot is always local, but there's no lisp variable for it.)
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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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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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123 buffers and as a reset-value when local-vars are killed.
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124
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125
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126 */
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127 struct buffer buffer_local_flags;
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128
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129 /* This structure holds the names of symbols whose values may be
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130 buffer-local. It is indexed and accessed in the same way as the above. */
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131 static Lisp_Object Vbuffer_local_symbols;
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132
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133 /* Alist of all buffer names vs the buffers. */
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134 /* This used to be a variable, but is no longer,
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135 to prevent lossage due to user rplac'ing this alist or its elements.
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136 Note that there is a per-frame copy of this as well; the frame slot
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137 and the global variable contain the same data, but possibly in different
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138 orders, so that the buffer ordering can be per-frame.
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139 */
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140 Lisp_Object Vbuffer_alist;
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141
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142 /* Functions to call before and after each text change. */
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143 Lisp_Object Qbefore_change_functions;
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144 Lisp_Object Qafter_change_functions;
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145 Lisp_Object Vbefore_change_functions;
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146 Lisp_Object Vafter_change_functions;
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147
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148 /* #### Obsolete, for compatibility */
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149 Lisp_Object Qbefore_change_function;
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150 Lisp_Object Qafter_change_function;
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151 Lisp_Object Vbefore_change_function;
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152 Lisp_Object Vafter_change_function;
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153
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154 #if 0 /* FSFmacs */
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155 Lisp_Object Vtransient_mark_mode;
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156 #endif
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157
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158 /* t means ignore all read-only text properties.
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159 A list means ignore such a property if its value is a member of the list.
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160 Any non-nil value means ignore buffer-read-only. */
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161 Lisp_Object Vinhibit_read_only;
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162
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163 /* List of functions to call that can query about killing a buffer.
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164 If any of these functions returns nil, we don't kill it. */
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165 Lisp_Object Vkill_buffer_query_functions;
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166
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167 /* Non-nil means delete a buffer's auto-save file when the buffer is saved. */
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168 Lisp_Object Vdelete_auto_save_files;
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169
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170 Lisp_Object Qbuffer_live_p;
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171 Lisp_Object Qbuffer_or_string_p;
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172
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173 /* List of functions to call before changing an unmodified buffer. */
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174 Lisp_Object Vfirst_change_hook;
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175 Lisp_Object Qfirst_change_hook;
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176
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177 Lisp_Object Qfundamental_mode;
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178 Lisp_Object Qmode_class;
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179 Lisp_Object Qpermanent_local;
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180
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181 Lisp_Object Qprotected_field;
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182
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183 Lisp_Object QSFundamental; /* A string "Fundamental" */
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184 Lisp_Object QSscratch; /* "*scratch*" */
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185 Lisp_Object Qdefault_directory;
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186
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187 Lisp_Object Qkill_buffer_hook;
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188 Lisp_Object Qbuffer_file_name, Qbuffer_undo_list;
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189
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190 Lisp_Object Qrename_auto_save_file;
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191
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192 Lisp_Object Qget_file_buffer;
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193 Lisp_Object Qchange_major_mode_hook, Vchange_major_mode_hook;
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194
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195 Lisp_Object Qfind_file_compare_truenames;
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196
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197 Lisp_Object Qswitch_to_buffer;
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198
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199 /* Two thresholds controlling how much undo information to keep. */
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200 int undo_threshold;
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201 int undo_high_threshold;
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202
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203 int find_file_compare_truenames;
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204 int find_file_use_truenames;
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205
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206
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207 static void reset_buffer_local_variables (struct buffer *, int first_time);
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208 static void nuke_all_buffer_slots (struct buffer *b, Lisp_Object zap);
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209 static Lisp_Object mark_buffer (Lisp_Object, void (*) (Lisp_Object));
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210 static void print_buffer (Lisp_Object, Lisp_Object, int);
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211 /* We do not need a finalize method to handle a buffer's children list
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212 because all buffers have `kill-buffer' applied to them before
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213 they disappear, and the children removal happens then. */
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214 DEFINE_LRECORD_IMPLEMENTATION ("buffer", buffer,
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215 mark_buffer, print_buffer, 0, 0, 0,
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216 struct buffer);
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217
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218 #ifdef ENERGIZE
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219 extern void mark_energize_buffer_data (struct buffer *b,
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220 void (*markobj) (Lisp_Object));
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221 #endif
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222
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223 Lisp_Object
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224 make_buffer (struct buffer *buf)
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225 {
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226 Lisp_Object obj;
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227 XSETBUFFER (obj, buf);
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228 return obj;
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229 }
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230
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231 static Lisp_Object
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232 mark_buffer (Lisp_Object obj, void (*markobj) (Lisp_Object))
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233 {
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234 struct buffer *buf = XBUFFER (obj);
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235
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236 /* Truncate undo information. */
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237 buf->undo_list = truncate_undo_list (buf->undo_list,
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238 undo_threshold,
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239 undo_high_threshold);
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240
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241 #define MARKED_SLOT(x) ((markobj) (buf->x));
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242 #include "bufslots.h"
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243 #undef MARKED_SLOT
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244
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245 #ifdef ENERGIZE
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246 mark_energize_buffer_data (XBUFFER (obj), markobj);
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247 #endif
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248
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249 ((markobj) (buf->extent_info));
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250
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251 /* Don't mark normally through the children slot.
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252 (Actually, in this case, it doesn't matter.)
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253 */
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254 mark_conses_in_list (buf->indirect_children);
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255
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256 if (buf->base_buffer)
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257 {
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258 Lisp_Object base_buf_obj = Qnil;
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259
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260 XSETBUFFER (base_buf_obj, buf->base_buffer);
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261 return base_buf_obj;
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262 }
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263 else
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264 return Qnil;
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265 }
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266
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267 static void
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268 print_buffer (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
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269 {
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270 struct buffer *b = XBUFFER (obj);
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271
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272 if (print_readably)
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273 {
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274 if (!BUFFER_LIVE_P (b))
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275 error ("printing unreadable object #<killed buffer>");
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276 else
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277 error ("printing unreadable object #<buffer %s>",
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14
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278 XSTRING_DATA (b->name));
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0
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279 }
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280 else if (!BUFFER_LIVE_P (b))
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281 write_c_string ("#<killed buffer>", printcharfun);
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282 else if (escapeflag)
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283 {
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284 write_c_string ("#<buffer ", printcharfun);
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285 print_internal (b->name, printcharfun, 1);
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286 write_c_string (">", printcharfun);
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287 }
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288 else
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289 {
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290 print_internal (b->name, printcharfun, 0);
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291 }
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292 }
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293
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294
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295 DEFUN ("bufferp", Fbufferp, Sbufferp, 1, 1, 0 /*
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296 T if OBJECT is an editor buffer.
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297 */ )
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298 (object)
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299 Lisp_Object object;
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300 {
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301 if (BUFFERP (object))
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302 return Qt;
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303 return Qnil;
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304 }
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305
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306 DEFUN ("buffer-live-p", Fbuffer_live_p, Sbuffer_live_p, 1, 1, 0 /*
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307 T if OBJECT is an editor buffer that has not been deleted.
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308 */ )
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309 (object)
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310 Lisp_Object object;
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311 {
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312 if (BUFFERP (object) && BUFFER_LIVE_P (XBUFFER (object)))
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313 return Qt;
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314 return Qnil;
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315 }
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316
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317 static void
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318 nsberror (Lisp_Object spec)
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319 {
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320 if (STRINGP (spec))
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14
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321 error ("No buffer named %s", XSTRING_DATA (spec));
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0
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322 signal_simple_error ("Invalid buffer argument", spec);
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323 }
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324
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325 DEFUN ("buffer-list", Fbuffer_list, Sbuffer_list, 0, 1, 0 /*
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326 Return a list of all existing live buffers.
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327 The order is specific to the selected frame; if the optional FRAME
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328 argument is provided, the ordering for that frame is returned instead.
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329 If the FRAME argument is t, then the global (non-frame) ordering is
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330 returned instead.
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331 */ )
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332 (frame)
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333 Lisp_Object frame;
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334 {
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335 Lisp_Object list;
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336 if (EQ (frame, Qt))
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337 list = Vbuffer_alist;
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338 else
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339 list = decode_frame (frame)->buffer_alist;
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340 return Fmapcar (Qcdr, list);
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341 }
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342
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343 Lisp_Object
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344 get_buffer (Lisp_Object name, int error_if_deleted_or_does_not_exist)
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345 {
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346 Lisp_Object buf;
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347
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348 if (BUFFERP (name))
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349 {
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350 if (!BUFFER_LIVE_P (XBUFFER (name)))
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351 {
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352 if (error_if_deleted_or_does_not_exist)
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353 nsberror (name);
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354 return (Qnil);
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355 }
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356 return name;
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357 }
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358 else
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359 {
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360 struct gcpro gcpro1;
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361
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362 CHECK_STRING (name);
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363 name = LISP_GETTEXT (name); /* I18N3 */
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364 GCPRO1 (name);
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365 buf = Fcdr (Fassoc (name, Vbuffer_alist));
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366 UNGCPRO;
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367 if (NILP (buf) && error_if_deleted_or_does_not_exist)
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368 nsberror (name);
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369 return (buf);
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370 }
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371 }
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372
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373 struct buffer *
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374 decode_buffer (Lisp_Object buffer, int allow_string)
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375 {
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376 if (NILP (buffer))
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377 {
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378 return current_buffer;
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379 }
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380 else if (STRINGP (buffer))
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381 {
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382 if (allow_string)
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383 return XBUFFER (get_buffer (buffer, 1));
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384 else
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385 CHECK_BUFFER (buffer); /* This will cause a wrong-type error. */
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386 }
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387
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388 CHECK_LIVE_BUFFER (buffer);
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389 return XBUFFER (buffer);
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390 }
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391
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392 DEFUN ("decode-buffer", Fdecode_buffer, Sdecode_buffer, 1, 1, 0 /*
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393 Validate BUFFER or if BUFFER is nil, return the current buffer.
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394 If BUFFER is a valid buffer or a string representing a valid buffer,
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395 the corresponding buffer object will be returned. Otherwise an error
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396 will be signaled.
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397 */ )
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398 (buffer)
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399 Lisp_Object buffer;
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400 {
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401 struct buffer *b = decode_buffer (buffer, 1);
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402 XSETBUFFER (buffer, b);
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403 return buffer;
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404 }
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405
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406 #if 0 /* FSFmacs */
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|
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407 /* bleagh!!! */
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|
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408 /* Like Fassoc, but use Fstring_equal to compare
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409 (which ignores text properties),
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410 and don't ever QUIT. */
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411
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412 static Lisp_Object
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|
|
413 assoc_ignore_text_properties (register Lisp_Object key, Lisp_Object list)
|
|
|
414 {
|
|
|
415 register Lisp_Object tail;
|
|
|
416 for (tail = list; !NILP (tail); tail = Fcdr (tail))
|
|
|
417 {
|
|
|
418 register Lisp_Object elt, tem;
|
|
|
419 elt = Fcar (tail);
|
|
|
420 tem = Fstring_equal (Fcar (elt), key);
|
|
|
421 if (!NILP (tem))
|
|
|
422 return elt;
|
|
|
423 }
|
|
|
424 return Qnil;
|
|
|
425 }
|
|
|
426
|
|
|
427 #endif
|
|
|
428
|
|
|
429 DEFUN ("get-buffer", Fget_buffer, Sget_buffer, 1, 1, 0 /*
|
|
|
430 Return the buffer named NAME (a string).
|
|
|
431 If there is no live buffer named NAME, return nil.
|
|
|
432 NAME may also be a buffer; if so, the value is that buffer.
|
|
|
433 */ )
|
|
|
434 (name)
|
|
|
435 Lisp_Object name;
|
|
|
436 {
|
|
|
437 #ifdef I18N3
|
|
|
438 /* #### Doc string should indicate that the buffer name will get
|
|
|
439 translated. */
|
|
|
440 #endif
|
|
|
441
|
|
|
442 /* #### This might return a dead buffer. This is gross. This is
|
|
|
443 called FSF compatibility. */
|
|
|
444 if (BUFFERP (name))
|
|
|
445 return name;
|
|
|
446 return (get_buffer (name, 0));
|
|
|
447 /* FSFmacs 19.29 calls assoc_ignore_text_properties() here.
|
|
|
448 Bleagh!! */
|
|
|
449 }
|
|
|
450
|
|
|
451
|
|
|
452 DEFUN ("get-file-buffer", Fget_file_buffer, Sget_file_buffer, 1, 1, 0 /*
|
|
|
453 Return the buffer visiting file FILENAME (a string).
|
|
|
454 The buffer's `buffer-file-name' must match exactly the expansion of FILENAME.
|
|
|
455 If there is no such live buffer, return nil.
|
|
|
456
|
|
|
457 Normally, the comparison is done by canonicalizing FILENAME (using
|
|
|
458 `expand-file-name') and comparing that to the value of `buffer-file-name'
|
|
|
459 for each existing buffer. However, If `find-file-compare-truenames' is
|
|
|
460 non-nil, FILENAME will be converted to its truename and the search will be
|
|
|
461 done on each buffer's value of `buffer-file-truename' instead of
|
|
|
462 `buffer-file-name'. Otherwise, if `find-file-use-truenames' is non-nil,
|
|
|
463 FILENAME will be converted to its truename and used for searching, but
|
|
|
464 the search will still be done on `buffer-file-name'.
|
|
|
465 */ )
|
|
|
466 (filename)
|
|
|
467 Lisp_Object filename;
|
|
|
468 {
|
|
|
469 /* This function can GC */
|
|
|
470 REGISTER Lisp_Object tail, buf, tem;
|
|
|
471 struct gcpro gcpro1;
|
|
|
472
|
|
|
473 #ifdef I18N3
|
|
|
474 /* DO NOT translate the filename. */
|
|
|
475 #endif
|
|
|
476 GCPRO1 (filename);
|
|
|
477 CHECK_STRING (filename);
|
|
|
478 filename = Fexpand_file_name (filename, Qnil);
|
|
|
479 {
|
|
|
480 /* If the file name has special constructs in it,
|
|
|
481 call the corresponding file handler. */
|
|
|
482 Lisp_Object handler = Ffind_file_name_handler (filename, Qget_file_buffer);
|
|
|
483 if (!NILP (handler))
|
|
|
484 {
|
|
|
485 UNGCPRO;
|
|
|
486 return call2 (handler, Qget_file_buffer, filename);
|
|
|
487 }
|
|
|
488 }
|
|
|
489 UNGCPRO;
|
|
|
490
|
|
|
491 if (find_file_compare_truenames || find_file_use_truenames)
|
|
|
492 {
|
|
|
493 struct gcpro ngcpro1, ngcpro2, ngcpro3;
|
|
|
494 Lisp_Object fn = Qnil;
|
|
|
495 Lisp_Object dn = Qnil;
|
|
|
496
|
|
|
497 NGCPRO3 (fn, dn, filename);
|
|
|
498 fn = Ffile_truename (filename, Qnil);
|
|
|
499 if (NILP (fn))
|
|
|
500 {
|
|
|
501 dn = Ffile_name_directory (filename);
|
|
|
502 fn = Ffile_truename (dn, Qnil);
|
|
|
503 if (! NILP (fn)) dn = fn;
|
|
|
504 fn = Fexpand_file_name (Ffile_name_nondirectory (filename),
|
|
|
505 dn);
|
|
|
506 }
|
|
|
507 filename = fn;
|
|
|
508 NUNGCPRO;
|
|
|
509 }
|
|
|
510
|
|
|
511 for (tail = Vbuffer_alist; CONSP (tail); tail = XCDR (tail))
|
|
|
512 {
|
|
|
513 buf = Fcdr (XCAR (tail));
|
|
|
514 if (!BUFFERP (buf)) continue;
|
|
|
515 if (!STRINGP (XBUFFER (buf)->filename)) continue;
|
|
|
516 tem = Fstring_equal (filename,
|
|
|
517 (find_file_compare_truenames
|
|
|
518 ? XBUFFER (buf)->file_truename
|
|
|
519 : XBUFFER (buf)->filename));
|
|
|
520 if (!NILP (tem))
|
|
|
521 return buf;
|
|
|
522 }
|
|
|
523 return Qnil;
|
|
|
524 }
|
|
|
525
|
|
|
526
|
|
|
527 static void
|
|
|
528 push_buffer_alist (Lisp_Object name, Lisp_Object buf)
|
|
|
529 {
|
|
|
530 Lisp_Object cons = Fcons (name, buf);
|
|
|
531 Lisp_Object frmcons, devcons, concons;
|
|
|
532
|
|
|
533 Vbuffer_alist = nconc2 (Vbuffer_alist, Fcons (cons, Qnil));
|
|
|
534 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons)
|
|
|
535 {
|
|
|
536 struct frame *f;
|
|
|
537 f = XFRAME (XCAR (frmcons));
|
|
|
538 f->buffer_alist = nconc2 (f->buffer_alist, Fcons (cons, Qnil));
|
|
|
539 }
|
|
|
540 }
|
|
|
541
|
|
|
542 static void
|
|
|
543 delete_from_buffer_alist (Lisp_Object buf)
|
|
|
544 {
|
|
|
545 Lisp_Object cons = Frassq (buf, Vbuffer_alist);
|
|
|
546 Lisp_Object frmcons, devcons, concons;
|
|
|
547 if (NILP (cons))
|
|
|
548 return; /* abort() ? */
|
|
|
549 Vbuffer_alist = delq_no_quit (cons, Vbuffer_alist);
|
|
|
550
|
|
|
551 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons)
|
|
|
552 {
|
|
|
553 struct frame *f;
|
|
|
554 f = XFRAME (XCAR (frmcons));
|
|
|
555 f->buffer_alist = delq_no_quit (cons, f->buffer_alist);
|
|
|
556 }
|
|
|
557 }
|
|
|
558
|
|
|
559 Lisp_Object
|
|
|
560 get_truename_buffer (REGISTER Lisp_Object filename)
|
|
|
561 {
|
|
|
562 /* FSFmacs has its own code here and doesn't call get-file-buffer.
|
|
|
563 That's because their equivalent of find-file-compare-truenames
|
|
|
564 (find-file-existing-other-name) isn't looked at in get-file-buffer.
|
|
|
565 This way is more correct. */
|
|
|
566 int count = specpdl_depth ();
|
|
|
567
|
|
|
568 specbind (Qfind_file_compare_truenames, Qt);
|
|
|
569 return unbind_to (count, Fget_file_buffer (filename));
|
|
|
570 }
|
|
|
571
|
|
|
572 static struct buffer *
|
|
|
573 allocate_buffer (void)
|
|
|
574 {
|
|
|
575 struct buffer *b = alloc_lcrecord (sizeof (struct buffer), lrecord_buffer);
|
|
|
576
|
|
|
577 copy_lcrecord (b, XBUFFER (Vbuffer_defaults));
|
|
|
578
|
|
|
579 return b;
|
|
|
580 }
|
|
|
581
|
|
|
582 static Lisp_Object
|
|
|
583 finish_init_buffer (struct buffer *b, Lisp_Object name)
|
|
|
584 {
|
|
|
585 Lisp_Object buf;
|
|
|
586
|
|
|
587 XSETBUFFER (buf, b);
|
|
|
588
|
|
|
589 name = Fcopy_sequence (name);
|
|
|
590 /* #### This really does not need to be called. We already
|
|
|
591 initialized the buffer-local variables in allocate_buffer().
|
|
|
592 local_var_alist is set to Qnil at the same point, in
|
|
|
593 nuke_all_buffer_slots(). */
|
|
|
594 reset_buffer_local_variables (b, 1);
|
|
|
595 b->directory = ((current_buffer) ? current_buffer->directory : Qnil);
|
|
|
596
|
|
|
597 b->last_window_start = 1;
|
|
|
598
|
|
|
599 b->name = name;
|
|
|
600 if (string_byte (XSTRING (name), 0) != ' ')
|
|
|
601 b->undo_list = Qnil;
|
|
|
602 else
|
|
|
603 b->undo_list = Qt;
|
|
|
604
|
|
|
605 /* initialize the extent list */
|
|
|
606 init_buffer_extents (b);
|
|
|
607
|
|
|
608 /* Put this in the alist of all live buffers. */
|
|
|
609 push_buffer_alist (name, buf);
|
|
|
610
|
|
|
611 init_buffer_markers (b);
|
|
|
612
|
|
|
613 b->generated_modeline_string = Fmake_string (make_int (84), make_int (' '));
|
|
|
614 b->modeline_extent_table = make_lisp_hashtable (20, HASHTABLE_KEY_WEAK,
|
|
|
615 HASHTABLE_EQ);
|
|
|
616
|
|
|
617 return buf;
|
|
|
618 }
|
|
|
619
|
|
|
620 DEFUN ("get-buffer-create", Fget_buffer_create, Sget_buffer_create, 1, 1, 0 /*
|
|
|
621 Return the buffer named NAME, or create such a buffer and return it.
|
|
|
622 A new buffer is created if there is no live buffer named NAME.
|
|
|
623 If NAME starts with a space, the new buffer does not keep undo information.
|
|
|
624 If NAME is a buffer instead of a string, then it is the value returned.
|
|
|
625 The value is never nil.
|
|
|
626 */ )
|
|
|
627 (name)
|
|
|
628 Lisp_Object name;
|
|
|
629 {
|
|
|
630 /* This function can GC */
|
|
|
631 Lisp_Object buf;
|
|
|
632 REGISTER struct buffer *b;
|
|
|
633
|
|
|
634 #ifdef I18N3
|
|
|
635 /* #### Doc string should indicate that the buffer name will get
|
|
|
636 translated. */
|
|
|
637 #endif
|
|
|
638
|
|
|
639 name = LISP_GETTEXT (name);
|
|
|
640 buf = Fget_buffer (name);
|
|
|
641 if (!NILP (buf))
|
|
|
642 return buf;
|
|
|
643
|
|
14
|
644 if (XSTRING_LENGTH (name) == 0)
|
|
0
|
645 error ("Empty string for buffer name is not allowed");
|
|
|
646
|
|
|
647 b = allocate_buffer ();
|
|
|
648
|
|
|
649 b->text = &b->own_text;
|
|
|
650 b->base_buffer = 0;
|
|
|
651 b->indirect_children = Qnil;
|
|
|
652 init_buffer_text (b, 0);
|
|
|
653
|
|
|
654 return finish_init_buffer (b, name);
|
|
|
655 }
|
|
|
656
|
|
|
657 DEFUN ("make-indirect-buffer",
|
|
|
658 Fmake_indirect_buffer, Smake_indirect_buffer, 2, 2,
|
|
|
659 "bMake indirect buffer (to buffer): \nBName of indirect buffer: " /*
|
|
|
660 Create and return an indirect buffer for buffer BASE, named NAME.
|
|
|
661 BASE should be an existing buffer (or buffer name).
|
|
|
662 NAME should be a string which is not the name of an existing buffer.
|
|
|
663 If BASE is an indirect buffer itself, the base buffer for that buffer
|
|
|
664 is made the base buffer for the newly created buffer. (Thus, there will
|
|
|
665 never be indirect buffers whose base buffers are themselves indirect.)
|
|
|
666 */ )
|
|
|
667 (base_buffer, name)
|
|
|
668 Lisp_Object base_buffer, name;
|
|
|
669 {
|
|
|
670 error ("make-indirect-buffer not yet implemented, oops");
|
|
|
671 return Qnil;
|
|
|
672
|
|
|
673 #if 0 /* #### implement this! Need various changes in insdel.c */
|
|
|
674 Lisp_Object buf;
|
|
|
675 REGISTER struct buffer *b;
|
|
|
676
|
|
|
677 name = LISP_GETTEXT (name);
|
|
|
678 buf = Fget_buffer (name);
|
|
|
679 if (!NILP (buf))
|
|
14
|
680 error ("Buffer name `%s' is in use", XSTRING_DATA (name));
|
|
0
|
681
|
|
|
682 base_buffer = Fget_buffer (base_buffer);
|
|
|
683 if (NILP (base_buffer))
|
|
14
|
684 error ("No such buffer: `%s'", XSTRING_DATA (XBUFFER (base_buffer)->name));
|
|
|
685
|
|
|
686 if (XSTRING_LENGTH (name) == 0)
|
|
0
|
687 error ("Empty string for buffer name is not allowed");
|
|
|
688
|
|
|
689 b = allocate_buffer ();
|
|
|
690
|
|
|
691 if (XBUFFER (base_buffer)->base_buffer)
|
|
|
692 b->base_buffer = XBUFFER (base_buffer)->base_buffer;
|
|
|
693 else
|
|
|
694 b->base_buffer = XBUFFER (base_buffer);
|
|
|
695
|
|
|
696 /* Use the base buffer's text object. */
|
|
|
697 b->text = b->base_buffer->text;
|
|
|
698 b->indirect_children = Qnil;
|
|
|
699 XSETBUFFER (buf, b);
|
|
|
700 b->base_buffer->indirect_children =
|
|
|
701 Fcons (buf, b->base_buffer->indirect_children);
|
|
|
702 init_buffer_text (b, 1);
|
|
|
703
|
|
|
704 return finish_init_buffer (b, name);
|
|
|
705 #endif /* 0 */
|
|
|
706 }
|
|
|
707
|
|
|
708
|
|
|
709 static void
|
|
|
710 reset_buffer_local_variables (struct buffer *b, int first_time)
|
|
|
711 {
|
|
|
712 struct buffer *def = XBUFFER (Vbuffer_defaults);
|
|
|
713
|
|
|
714 b->local_var_flags = 0;
|
|
|
715 /* For each slot that has a default value,
|
|
|
716 copy that into the slot. */
|
|
|
717 #define MARKED_SLOT(slot) \
|
|
|
718 { int mask = XINT (buffer_local_flags.slot); \
|
|
|
719 if ((mask > 0 || mask == -1 || mask == -3) \
|
|
|
720 && (first_time \
|
|
|
721 || NILP (Fget (XBUFFER (Vbuffer_local_symbols)->slot, \
|
|
|
722 Qpermanent_local, Qnil)))) \
|
|
|
723 b->slot = def->slot; \
|
|
|
724 }
|
|
|
725 #include "bufslots.h"
|
|
|
726 #undef MARKED_SLOT
|
|
|
727 }
|
|
|
728
|
|
|
729
|
|
|
730 /* We split this away from generate-new-buffer, because rename-buffer
|
|
|
731 and set-visited-file-name ought to be able to use this to really
|
|
|
732 rename the buffer properly. */
|
|
|
733
|
|
|
734 DEFUN ("generate-new-buffer-name", Fgenerate_new_buffer_name,
|
|
|
735 Sgenerate_new_buffer_name,
|
|
|
736 1, 2, 0 /*
|
|
|
737 Return a string that is the name of no existing buffer based on NAME.
|
|
|
738 If there is no live buffer named NAME, then return NAME.
|
|
|
739 Otherwise modify name by appending `<NUMBER>', incrementing NUMBER
|
|
|
740 until an unused name is found, and then return that name.
|
|
|
741 Optional second argument IGNORE specifies a name that is okay to use
|
|
|
742 \(if it is in the sequence to be tried)
|
|
|
743 even if a buffer with that name exists.
|
|
|
744 */ )
|
|
|
745 (name, ignore)
|
|
|
746 Lisp_Object name, ignore;
|
|
|
747 {
|
|
|
748 REGISTER Lisp_Object gentemp, tem;
|
|
|
749 int count;
|
|
|
750 char number[10];
|
|
|
751
|
|
|
752 CHECK_STRING (name);
|
|
|
753
|
|
|
754 name = LISP_GETTEXT (name);
|
|
|
755 #ifdef I18N3
|
|
|
756 /* #### Doc string should indicate that the buffer name will get
|
|
|
757 translated. */
|
|
|
758 #endif
|
|
|
759
|
|
|
760 tem = Fget_buffer (name);
|
|
|
761 if (NILP (tem))
|
|
|
762 return (name);
|
|
|
763
|
|
|
764 count = 1;
|
|
|
765 while (1)
|
|
|
766 {
|
|
|
767 sprintf (number, "<%d>", ++count);
|
|
|
768 gentemp = concat2 (name, build_string (number));
|
|
|
769 if (!NILP (ignore))
|
|
|
770 {
|
|
|
771 tem = Fstring_equal (gentemp, ignore);
|
|
|
772 if (!NILP (tem))
|
|
|
773 return gentemp;
|
|
|
774 }
|
|
|
775 tem = Fget_buffer (gentemp);
|
|
|
776 if (NILP (tem))
|
|
|
777 return (gentemp);
|
|
|
778 }
|
|
|
779 }
|
|
|
780
|
|
|
781
|
|
|
782 DEFUN ("buffer-name", Fbuffer_name, Sbuffer_name, 0, 1, 0 /*
|
|
|
783 Return the name of BUFFER, as a string.
|
|
|
784 With no argument or nil as argument, return the name of the current buffer.
|
|
|
785 */ )
|
|
|
786 (buffer)
|
|
|
787 Lisp_Object buffer;
|
|
|
788 {
|
|
|
789 /* For compatibility, we allow a dead buffer here.
|
|
|
790 Earlier versions of Emacs didn't provide buffer-live-p. */
|
|
|
791 if (NILP (buffer))
|
|
|
792 return current_buffer->name;
|
|
|
793 CHECK_BUFFER (buffer);
|
|
|
794 return XBUFFER (buffer)->name;
|
|
|
795 }
|
|
|
796
|
|
|
797 DEFUN ("buffer-file-name", Fbuffer_file_name, Sbuffer_file_name, 0, 1, 0 /*
|
|
|
798 Return name of file BUFFER is visiting, or nil if none.
|
|
|
799 No argument or nil as argument means use the current buffer.
|
|
|
800 */ )
|
|
|
801 (buffer)
|
|
|
802 Lisp_Object buffer;
|
|
|
803 {
|
|
|
804 /* For compatibility, we allow a dead buffer here. Yuck! */
|
|
|
805 if (NILP (buffer))
|
|
|
806 return current_buffer->filename;
|
|
|
807 CHECK_BUFFER (buffer);
|
|
|
808 return XBUFFER (buffer)->filename;
|
|
|
809 }
|
|
|
810
|
|
|
811 DEFUN ("buffer-base-buffer", Fbuffer_base_buffer, Sbuffer_base_buffer,
|
|
|
812 0, 1, 0 /*
|
|
|
813 Return the base buffer of indirect buffer BUFFER.
|
|
|
814 If BUFFER is not indirect, return nil.
|
|
|
815 */ )
|
|
|
816 (buffer)
|
|
|
817 Lisp_Object buffer;
|
|
|
818 {
|
|
|
819 struct buffer *buf = decode_buffer (buffer, 0);
|
|
|
820 struct buffer *base = buf->base_buffer;
|
|
|
821 Lisp_Object base_buffer = Qnil;
|
|
|
822
|
|
|
823 if (! base)
|
|
|
824 return Qnil;
|
|
|
825 XSETBUFFER (base_buffer, base);
|
|
|
826 return base_buffer;
|
|
|
827 }
|
|
|
828
|
|
|
829 DEFUN ("buffer-indirect-children", Fbuffer_indirect_children,
|
|
|
830 Sbuffer_indirect_children,
|
|
|
831 0, 1, 0 /*
|
|
|
832 Return a list of all indirect buffers whose base buffer is BUFFER.
|
|
|
833 If BUFFER is indirect, the return value will always be nil; see
|
|
|
834 `make-indirect-buffer'.
|
|
|
835 */ )
|
|
|
836 (buffer)
|
|
|
837 Lisp_Object buffer;
|
|
|
838 {
|
|
|
839 struct buffer *buf = decode_buffer (buffer, 0);
|
|
|
840
|
|
|
841 return Fcopy_sequence (buf->indirect_children);
|
|
|
842 }
|
|
|
843
|
|
|
844 /* Map MAPFUN over all buffers that share the same text as BUF
|
|
|
845 (this includes BUF). Pass two arguments to MAPFUN: a buffer,
|
|
|
846 and CLOSURE. If any invocation of MAPFUN returns non-zero,
|
|
|
847 halt immediately and return that value. Otherwise, continue
|
|
|
848 the mapping to the end and return 0. */
|
|
|
849
|
|
|
850 int
|
|
|
851 map_over_sharing_buffers (struct buffer *buf,
|
|
|
852 int (*mapfun) (struct buffer *buf, void *closure),
|
|
|
853 void *closure)
|
|
|
854 {
|
|
|
855 int result;
|
|
|
856 Lisp_Object tail;
|
|
|
857
|
|
|
858 if (buf->base_buffer)
|
|
|
859 {
|
|
|
860 buf = buf->base_buffer;
|
|
|
861 assert (!buf->base_buffer);
|
|
|
862 }
|
|
|
863
|
|
|
864 result = (mapfun) (buf, closure);
|
|
|
865 if (result)
|
|
|
866 return result;
|
|
|
867
|
|
|
868 LIST_LOOP (tail, buf->indirect_children)
|
|
|
869 {
|
|
|
870 Lisp_Object buffer = XCAR (tail);
|
|
|
871 result = (mapfun) (XBUFFER (buffer), closure);
|
|
|
872 if (result)
|
|
|
873 return result;
|
|
|
874 }
|
|
|
875
|
|
|
876 return 0;
|
|
|
877 }
|
|
|
878
|
|
|
879 DEFUN ("buffer-local-variables", Fbuffer_local_variables,
|
|
|
880 Sbuffer_local_variables, 0, 1, 0 /*
|
|
|
881 Return an alist of variables that are buffer-local in BUFFER.
|
|
|
882 Most elements look like (SYMBOL . VALUE), describing one variable.
|
|
|
883 For a symbol that is locally unbound, just the symbol appears in the value.
|
|
|
884 Note that storing new VALUEs in these elements doesn't change the variables.
|
|
|
885 No argument or nil as argument means use current buffer as BUFFER.
|
|
|
886 */ )
|
|
|
887 (buffer)
|
|
|
888 Lisp_Object buffer;
|
|
|
889 {
|
|
|
890 struct buffer *buf = decode_buffer (buffer, 0);
|
|
|
891 Lisp_Object result = Qnil;
|
|
|
892
|
|
|
893 {
|
|
|
894 Lisp_Object tail;
|
|
|
895 for (tail = buf->local_var_alist; CONSP (tail); tail = XCDR (tail))
|
|
|
896 {
|
|
|
897 Lisp_Object elt = XCAR (tail);
|
|
|
898 /* Reference each variable in the alist in buf.
|
|
|
899 If inquiring about the current buffer, this gets the current values,
|
|
|
900 so store them into the alist so the alist is up to date.
|
|
|
901 If inquiring about some other buffer, this swaps out any values
|
|
|
902 for that buffer, making the alist up to date automatically. */
|
|
|
903 Lisp_Object val = find_symbol_value (XCAR (elt));
|
|
|
904 /* Use the current buffer value only if buf is the current buffer. */
|
|
|
905 if (buf != current_buffer)
|
|
|
906 val = XCDR (elt);
|
|
|
907
|
|
|
908 /* If symbol is unbound, put just the symbol in the list. */
|
|
|
909 if (UNBOUNDP (val))
|
|
|
910 result = Fcons (XCAR (elt), result);
|
|
|
911 /* Otherwise, put (symbol . value) in the list. */
|
|
|
912 else
|
|
|
913 result = Fcons (Fcons (XCAR (elt), val), result);
|
|
|
914 }
|
|
|
915 }
|
|
|
916
|
|
|
917 /* Add on all the variables stored in special slots. */
|
|
|
918 {
|
|
|
919 struct buffer *syms = XBUFFER (Vbuffer_local_symbols);
|
|
|
920 #define MARKED_SLOT(slot) \
|
|
|
921 { int mask = XINT (buffer_local_flags.slot); \
|
|
|
922 if (mask == 0 || mask == -1 \
|
|
|
923 || ((mask > 0) && (buf->local_var_flags & mask))) \
|
|
|
924 result = Fcons (Fcons (syms->slot, buf->slot), result); \
|
|
|
925 }
|
|
|
926 #include "bufslots.h"
|
|
|
927 #undef MARKED_SLOT
|
|
|
928 }
|
|
|
929 return (result);
|
|
|
930 }
|
|
|
931
|
|
|
932 DEFUN ("buffer-dedicated-frame", Fbuffer_dedicated_frame,
|
|
|
933 Sbuffer_dedicated_frame,
|
|
|
934 0, 1, 0 /*
|
|
|
935 Return the frame dedicated to this BUFFER, or nil if there is none.
|
|
|
936 No argument or nil as argument means use current buffer as BUFFER.
|
|
|
937 */ )
|
|
|
938 (buffer)
|
|
|
939 Lisp_Object buffer;
|
|
|
940 {
|
|
|
941 struct buffer *buf = decode_buffer (buffer, 0);
|
|
|
942
|
|
|
943 /* XEmacs addition: if the frame is dead, silently make it go away. */
|
|
|
944 if (!NILP (buf->dedicated_frame) &&
|
|
|
945 !FRAME_LIVE_P (XFRAME (buf->dedicated_frame)))
|
|
|
946 buf->dedicated_frame = Qnil;
|
|
|
947
|
|
|
948 return buf->dedicated_frame;
|
|
|
949 }
|
|
|
950
|
|
|
951 DEFUN ("set-buffer-dedicated-frame", Fset_buffer_dedicated_frame,
|
|
|
952 Sset_buffer_dedicated_frame,
|
|
|
953 2, 2, 0 /*
|
|
|
954 For this BUFFER, set the FRAME dedicated to it.
|
|
|
955 FRAME must be a frame or nil.
|
|
|
956 */ )
|
|
|
957 (buffer, frame)
|
|
|
958 Lisp_Object buffer, frame;
|
|
|
959 {
|
|
|
960 struct buffer *buf = decode_buffer (buffer, 0);
|
|
|
961
|
|
|
962 if (!NILP (frame))
|
|
|
963 CHECK_LIVE_FRAME (frame); /* XEmacs change */
|
|
|
964
|
|
|
965 return buf->dedicated_frame = frame;
|
|
|
966 }
|
|
|
967
|
|
|
968
|
|
|
969
|
|
|
970 DEFUN ("buffer-modified-p", Fbuffer_modified_p, Sbuffer_modified_p,
|
|
|
971 0, 1, 0 /*
|
|
|
972 Return t if BUFFER was modified since its file was last read or saved.
|
|
|
973 No argument or nil as argument means use current buffer as BUFFER.
|
|
|
974 */ )
|
|
|
975 (buffer)
|
|
|
976 Lisp_Object buffer;
|
|
|
977 {
|
|
|
978 struct buffer *buf = decode_buffer (buffer, 0);
|
|
|
979
|
|
|
980 return BUF_SAVE_MODIFF (buf) < BUF_MODIFF (buf) ? Qt : Qnil;
|
|
|
981 }
|
|
|
982
|
|
|
983 DEFUN ("set-buffer-modified-p", Fset_buffer_modified_p, Sset_buffer_modified_p,
|
|
|
984 1, 2, 0 /*
|
|
|
985 Mark BUFFER as modified or unmodified according to FLAG.
|
|
|
986 A non-nil FLAG means mark the buffer modified. No argument or nil
|
|
|
987 as BUFFER means use current buffer.
|
|
|
988 */ )
|
|
|
989 (flag, buffer)
|
|
|
990 Lisp_Object flag, buffer;
|
|
|
991 {
|
|
|
992 /* This function can GC */
|
|
|
993 Lisp_Object fn;
|
|
|
994 struct buffer *buf = decode_buffer (buffer, 0);
|
|
|
995
|
|
|
996 #ifdef ENERGIZE
|
|
|
997 Lisp_Object starting_flag =
|
|
|
998 (BUF_SAVE_MODIFF (buf) < BUF_MODIFF (buf)) ? Qt : Qnil;
|
|
|
999 Lisp_Object argument_flag = (NILP (flag)) ? Qnil : Qt;
|
|
|
1000 #endif
|
|
|
1001
|
|
|
1002 #ifdef CLASH_DETECTION
|
|
|
1003 /* If buffer becoming modified, lock the file.
|
|
|
1004 If buffer becoming unmodified, unlock the file. */
|
|
|
1005
|
|
|
1006 fn = buf->file_truename;
|
|
|
1007 if (!NILP (fn))
|
|
|
1008 {
|
|
|
1009 int already = BUF_SAVE_MODIFF (buf) < BUF_MODIFF (buf);
|
|
|
1010 if (already == NILP (flag))
|
|
|
1011 {
|
|
|
1012 int count = specpdl_depth ();
|
|
|
1013 /* lock_file() and unlock_file() currently use current_buffer */
|
|
|
1014 record_unwind_protect (Fset_buffer, Fcurrent_buffer ());
|
|
|
1015 set_buffer_internal (buf);
|
|
|
1016 if (!already && !NILP (flag))
|
|
|
1017 lock_file (fn);
|
|
|
1018 else if (already && NILP (flag))
|
|
|
1019 unlock_file (fn);
|
|
|
1020 unbind_to (count, Qnil);
|
|
|
1021 }
|
|
|
1022 }
|
|
|
1023 #endif /* CLASH_DETECTION */
|
|
|
1024
|
|
|
1025 /* This is often called when the buffer contents are altered but we
|
|
|
1026 don't want to treat the changes that way (e.g. selective
|
|
|
1027 display). We still need to make sure redisplay realizes that the
|
|
|
1028 contents have potentially altered and it needs to do some
|
|
|
1029 work. */
|
|
|
1030 BUF_MODIFF (buf)++;
|
|
|
1031 BUF_SAVE_MODIFF (buf) = NILP (flag) ? BUF_MODIFF (buf) : 0;
|
|
|
1032 MARK_MODELINE_CHANGED;
|
|
|
1033
|
|
|
1034 #ifdef ENERGIZE
|
|
|
1035 /* don't send any notification if we are "setting" the modification bit
|
|
|
1036 to be the same as it already was */
|
|
|
1037 if (!EQ (starting_flag, argument_flag))
|
|
|
1038 {
|
|
|
1039 extern Lisp_Object Qenergize_buffer_modified_hook;
|
|
|
1040 int count = specpdl_depth ();
|
|
|
1041 record_unwind_protect (Fset_buffer, Fcurrent_buffer ());
|
|
|
1042 set_buffer_internal (buf);
|
|
|
1043 va_run_hook_with_args (Qenergize_buffer_modified_hook, 3,
|
|
|
1044 flag, make_int (BUF_BEG (buf)),
|
|
|
1045 make_int (BUF_Z (buf)));
|
|
|
1046 unbind_to (count, Qnil);
|
|
|
1047 }
|
|
|
1048 #endif /* ENERGIZE */
|
|
|
1049
|
|
|
1050 return flag;
|
|
|
1051 }
|
|
|
1052
|
|
|
1053 DEFUN ("buffer-modified-tick", Fbuffer_modified_tick, Sbuffer_modified_tick,
|
|
|
1054 0, 1, 0 /*
|
|
|
1055 Return BUFFER's tick counter, incremented for each change in text.
|
|
|
1056 Each buffer has a tick counter which is incremented each time the text in
|
|
|
1057 that buffer is changed. It wraps around occasionally.
|
|
|
1058 No argument or nil as argument means use current buffer as BUFFER.
|
|
|
1059 */ )
|
|
|
1060 (buffer)
|
|
|
1061 Lisp_Object buffer;
|
|
|
1062 {
|
|
|
1063 struct buffer *buf = decode_buffer (buffer, 0);
|
|
|
1064
|
|
|
1065 return make_int (BUF_MODIFF (buf));
|
|
|
1066 }
|
|
|
1067
|
|
|
1068 DEFUN ("rename-buffer", Frename_buffer, Srename_buffer, 1, 2,
|
|
|
1069 "sRename buffer (to new name): \nP" /*
|
|
|
1070 Change current buffer's name to NEWNAME (a string).
|
|
|
1071 If second arg UNIQUE is nil or omitted, it is an error if a
|
|
|
1072 buffer named NEWNAME already exists.
|
|
|
1073 If UNIQUE is non-nil, come up with a new name using
|
|
|
1074 `generate-new-buffer-name'.
|
|
|
1075 Interactively, one can set UNIQUE with a prefix argument.
|
|
|
1076 Returns the name we actually gave the buffer.
|
|
|
1077 This does not change the name of the visited file (if any).
|
|
|
1078 */ )
|
|
|
1079 (newname, unique)
|
|
|
1080 Lisp_Object newname, unique;
|
|
|
1081 {
|
|
|
1082 /* This function can GC */
|
|
|
1083 Lisp_Object tem, buf;
|
|
|
1084
|
|
|
1085 #ifdef I18N3
|
|
|
1086 /* #### Doc string should indicate that the buffer name will get
|
|
|
1087 translated. */
|
|
|
1088 #endif
|
|
|
1089 CHECK_STRING (newname);
|
|
|
1090 newname = LISP_GETTEXT (newname);
|
|
|
1091
|
|
14
|
1092 if (XSTRING_LENGTH (newname) == 0)
|
|
0
|
1093 error ("Empty string is invalid as a buffer name");
|
|
|
1094
|
|
|
1095 tem = Fget_buffer (newname);
|
|
|
1096 /* Don't short-circuit if UNIQUE is t. That is a useful way to rename
|
|
|
1097 the buffer automatically so you can create another with the original name.
|
|
|
1098 It makes UNIQUE equivalent to
|
|
|
1099 (rename-buffer (generate-new-buffer-name NEWNAME)). */
|
|
|
1100 /* XEmacs change: added check for nil */
|
|
|
1101 if (NILP (unique) && !NILP (tem) && XBUFFER (tem) == current_buffer)
|
|
|
1102 return current_buffer->name;
|
|
|
1103 if (!NILP (tem))
|
|
|
1104 {
|
|
|
1105 if (!NILP (unique))
|
|
|
1106 newname = Fgenerate_new_buffer_name (newname, current_buffer->name);
|
|
|
1107 else
|
|
|
1108 error ("Buffer name \"%s\" is in use",
|
|
14
|
1109 XSTRING_DATA (newname));
|
|
0
|
1110 }
|
|
|
1111
|
|
|
1112 current_buffer->name = newname;
|
|
|
1113
|
|
|
1114 /* Catch redisplay's attention. Unless we do this, the modelines for
|
|
|
1115 any windows displaying current_buffer will stay unchanged. */
|
|
|
1116 MARK_MODELINE_CHANGED;
|
|
|
1117
|
|
|
1118 buf = Fcurrent_buffer ();
|
|
|
1119
|
|
|
1120 /* The aconses in the Vbuffer_alist are shared with frame->buffer_alist,
|
|
|
1121 so this will change it in the per-frame ordering as well. */
|
|
|
1122 Fsetcar (Frassq (buf, Vbuffer_alist), newname);
|
|
|
1123 if (NILP (current_buffer->filename)
|
|
|
1124 && !NILP (current_buffer->auto_save_file_name))
|
|
|
1125 call0 (Qrename_auto_save_file);
|
|
|
1126 /* refetch since that last call may have done GC */
|
|
|
1127 /* (hypothetical relocating GC) */
|
|
|
1128 return current_buffer->name;
|
|
|
1129 }
|
|
|
1130
|
|
|
1131 DEFUN ("other-buffer", Fother_buffer, Sother_buffer, 0, 3, 0 /*
|
|
|
1132 Return most recently selected buffer other than BUFFER.
|
|
|
1133 Buffers not visible in windows are preferred to visible buffers,
|
|
|
1134 unless optional third argument VISIBLE-OK is non-nil.
|
|
|
1135 If no other buffer exists, the buffer `*scratch*' is returned.
|
|
|
1136 If BUFFER is omitted or nil, some interesting buffer is returned.
|
|
|
1137
|
|
|
1138 The ordering is for this frame; If second optional argument FRAME
|
|
|
1139 is provided, then the ordering is for that frame. If the second arg
|
|
|
1140 is t, then the global ordering is returned.
|
|
|
1141
|
|
|
1142 Note: In FSF Emacs, this function takes two arguments: BUFFER and
|
|
|
1143 VISIBLE-OK.
|
|
|
1144 */ )
|
|
|
1145 (buffer, frame, visible_ok)
|
|
|
1146 Lisp_Object buffer, frame, visible_ok;
|
|
|
1147 {
|
|
|
1148 /* This function can GC */
|
|
|
1149 Lisp_Object tail, buf, notsogood, tem;
|
|
|
1150 Lisp_Object alist;
|
|
|
1151
|
|
|
1152 notsogood = Qnil;
|
|
|
1153
|
|
|
1154 if (EQ (frame, Qt))
|
|
|
1155 alist = Vbuffer_alist;
|
|
|
1156 else
|
|
|
1157 {
|
|
|
1158 struct frame *f = decode_frame (frame);
|
|
|
1159
|
|
|
1160 XSETFRAME (frame, f);
|
|
|
1161 alist = f->buffer_alist;
|
|
|
1162 }
|
|
|
1163
|
|
|
1164 for (tail = alist; !NILP (tail); tail = Fcdr (tail))
|
|
|
1165 {
|
|
|
1166 buf = Fcdr (Fcar (tail));
|
|
|
1167 if (EQ (buf, buffer))
|
|
|
1168 continue;
|
|
|
1169 if (string_byte (XSTRING (XBUFFER (buf)->name), 0) == ' ')
|
|
|
1170 continue;
|
|
|
1171 /* If FRAME has a buffer_predicate,
|
|
|
1172 disregard buffers that don't fit the predicate. */
|
|
|
1173 if (FRAMEP (frame))
|
|
|
1174 {
|
|
|
1175 tem = XFRAME (frame)->buffer_predicate;
|
|
|
1176 if (!NILP (tem))
|
|
|
1177 {
|
|
|
1178 tem = call1 (tem, buf);
|
|
|
1179 if (NILP (tem))
|
|
|
1180 continue;
|
|
|
1181 }
|
|
|
1182 }
|
|
|
1183
|
|
|
1184 if (NILP (visible_ok))
|
|
|
1185 {
|
|
|
1186 /* get-buffer-window will handle nil or t frame */
|
|
|
1187 tem = Fget_buffer_window (buf, frame, Qnil);
|
|
|
1188 }
|
|
|
1189 else
|
|
|
1190 tem = Qnil;
|
|
|
1191 if (NILP (tem))
|
|
|
1192 return buf;
|
|
|
1193 if (NILP (notsogood))
|
|
|
1194 notsogood = buf;
|
|
|
1195 }
|
|
|
1196 if (!NILP (notsogood))
|
|
|
1197 return notsogood;
|
|
|
1198 return Fget_buffer_create (QSscratch);
|
|
|
1199 }
|
|
|
1200
|
|
|
1201 /* XEmacs change: Make this argument required because this is a dangerous
|
|
|
1202 function. */
|
|
|
1203 DEFUN ("buffer-disable-undo", Fbuffer_disable_undo, Sbuffer_disable_undo, 1, 1, "" /*
|
|
|
1204 Make BUFFER stop keeping undo information.
|
|
|
1205 Any undo records it already has are discarded.
|
|
|
1206 */ )
|
|
|
1207 (buffer)
|
|
|
1208 Lisp_Object buffer;
|
|
|
1209 {
|
|
|
1210 /* Allowing nil is an RMSism */
|
|
|
1211 struct buffer *real_buf = decode_buffer (buffer, 1);
|
|
|
1212 real_buf->undo_list = Qt;
|
|
|
1213 return Qnil;
|
|
|
1214 }
|
|
|
1215
|
|
|
1216 DEFUN ("buffer-enable-undo", Fbuffer_enable_undo, Sbuffer_enable_undo,
|
|
|
1217 0, 1, "" /*
|
|
|
1218 Start keeping undo information for buffer BUFFER.
|
|
|
1219 No argument or nil as argument means do this for the current buffer.
|
|
|
1220 */ )
|
|
|
1221 (buffer)
|
|
|
1222 Lisp_Object buffer;
|
|
|
1223 {
|
|
|
1224 /* Allowing nil is an RMSism */
|
|
|
1225 struct buffer *real_buf = decode_buffer (buffer, 1);
|
|
|
1226 if (EQ (real_buf->undo_list, Qt))
|
|
|
1227 real_buf->undo_list = Qnil;
|
|
|
1228
|
|
|
1229 return Qnil;
|
|
|
1230 }
|
|
|
1231
|
|
|
1232 DEFUN ("kill-buffer", Fkill_buffer, Skill_buffer, 1, 1, "bKill buffer: " /*
|
|
|
1233 Kill the buffer BUFNAME.
|
|
|
1234 The argument may be a buffer or may be the name of a buffer.
|
|
|
1235 An argument of nil means kill the current buffer.
|
|
|
1236
|
|
|
1237 Value is t if the buffer is actually killed, nil if user says no.
|
|
|
1238
|
|
|
1239 The value of `kill-buffer-hook' (which may be local to that buffer),
|
|
|
1240 if not void, is a list of functions to be called, with no arguments,
|
|
|
1241 before the buffer is actually killed. The buffer to be killed is current
|
|
|
1242 when the hook functions are called.
|
|
|
1243
|
|
|
1244 Any processes that have this buffer as the `process-buffer' are killed
|
|
|
1245 with `delete-process'.
|
|
|
1246 */ )
|
|
|
1247 (bufname)
|
|
|
1248 Lisp_Object bufname;
|
|
|
1249 {
|
|
|
1250 /* This function can GC */
|
|
|
1251 Lisp_Object buf;
|
|
|
1252 REGISTER struct buffer *b;
|
|
|
1253 struct gcpro gcpro1, gcpro2;
|
|
|
1254
|
|
|
1255 if (NILP (bufname))
|
|
|
1256 buf = Fcurrent_buffer ();
|
|
|
1257 else if (BUFFERP (bufname))
|
|
|
1258 buf = bufname;
|
|
|
1259 else
|
|
|
1260 {
|
|
|
1261 buf = get_buffer (bufname, 0);
|
|
|
1262 if (NILP (buf)) nsberror (bufname);
|
|
|
1263 }
|
|
|
1264
|
|
|
1265 b = XBUFFER (buf);
|
|
|
1266
|
|
|
1267 /* OK to delete an already-deleted buffer. */
|
|
|
1268 if (!BUFFER_LIVE_P (b))
|
|
|
1269 return Qnil;
|
|
|
1270
|
|
|
1271 /* Don't kill the minibuffer now current. */
|
|
|
1272 if (EQ (buf, Vminibuffer_zero))
|
|
|
1273 return Qnil;
|
|
|
1274
|
|
|
1275 /* Or the echo area. */
|
|
|
1276 if (EQ (buf, Vecho_area_buffer))
|
|
|
1277 return Qnil;
|
|
|
1278
|
|
|
1279 /* Query if the buffer is still modified. */
|
|
|
1280 if (INTERACTIVE && !NILP (b->filename)
|
|
|
1281 && BUF_MODIFF (b) > BUF_SAVE_MODIFF (b))
|
|
|
1282 {
|
|
|
1283 Lisp_Object killp;
|
|
|
1284 GCPRO2 (buf, bufname);
|
|
|
1285 killp = call1
|
|
|
1286 (Qyes_or_no_p,
|
|
|
1287 (emacs_doprnt_string_c
|
|
|
1288 ((CONST Bufbyte *) GETTEXT ("Buffer %s modified; kill anyway? "),
|
|
14
|
1289 Qnil, -1, XSTRING_DATA (b->name))));
|
|
0
|
1290 UNGCPRO;
|
|
|
1291 if (NILP (killp))
|
|
|
1292 return Qnil;
|
|
|
1293 b = XBUFFER (buf); /* Hypothetical relocating GC. */
|
|
|
1294 }
|
|
|
1295
|
|
|
1296 /* Run hooks with the buffer to be killed temporarily selected,
|
|
|
1297 unless the buffer is already dead (could have been deleted
|
|
|
1298 in the question above).
|
|
|
1299 */
|
|
|
1300 if (BUFFER_LIVE_P (b))
|
|
|
1301 {
|
|
|
1302 int speccount = specpdl_depth ();
|
|
|
1303 Lisp_Object tail = Qnil;
|
|
|
1304
|
|
|
1305 GCPRO2 (buf, tail);
|
|
|
1306 record_unwind_protect (save_excursion_restore, save_excursion_save ());
|
|
|
1307 Fset_buffer (buf);
|
|
|
1308
|
|
|
1309 /* First run the query functions; if any query is answered no,
|
|
|
1310 don't kill the buffer. */
|
|
|
1311 for (tail = Vkill_buffer_query_functions;
|
|
|
1312 !NILP (tail);
|
|
|
1313 tail = Fcdr (tail))
|
|
|
1314 {
|
|
|
1315 if (NILP (call0 (Fcar (tail))))
|
|
|
1316 {
|
|
|
1317 UNGCPRO;
|
|
|
1318 return unbind_to (speccount, Qnil);
|
|
|
1319 }
|
|
|
1320 }
|
|
|
1321
|
|
|
1322 /* Then run the hooks. */
|
|
|
1323 run_hook (Qkill_buffer_hook);
|
|
|
1324 #ifdef HAVE_X_WINDOWS
|
|
|
1325 /* If an X selection was in this buffer, disown it.
|
|
|
1326 We could have done this by simply adding this function to the
|
|
|
1327 kill-buffer-hook, but the user might mess that up.
|
|
|
1328 */
|
|
|
1329 if (EQ (Vwindow_system, Qx))
|
|
|
1330 call0 (intern ("xselect-kill-buffer-hook"));
|
|
|
1331 /* #### generalize me! */
|
|
|
1332 #endif
|
|
|
1333 unbind_to (speccount, Qnil);
|
|
|
1334 UNGCPRO;
|
|
|
1335 b = XBUFFER (buf); /* Hypothetical relocating GC. */
|
|
|
1336 }
|
|
|
1337
|
|
|
1338 /* We have no more questions to ask. Verify that it is valid
|
|
|
1339 to kill the buffer. This must be done after the questions
|
|
|
1340 since anything can happen within yes-or-no-p. */
|
|
|
1341
|
|
|
1342 /* Don't kill the minibuffer now current. */
|
|
|
1343 if (EQ (buf, XWINDOW (minibuf_window)->buffer))
|
|
|
1344 return Qnil;
|
|
|
1345
|
|
|
1346 /* Might have been deleted during the last question above */
|
|
|
1347 if (!BUFFER_LIVE_P (b))
|
|
|
1348 return Qnil;
|
|
|
1349
|
|
|
1350 /* When we kill a base buffer, kill all its indirect buffers.
|
|
|
1351 We do it at this stage so nothing terrible happens if they
|
|
|
1352 ask questions or their hooks get errors. */
|
|
|
1353 if (! b->base_buffer)
|
|
|
1354 {
|
|
|
1355 Lisp_Object rest;
|
|
|
1356
|
|
|
1357 GCPRO1 (buf);
|
|
|
1358
|
|
|
1359 LIST_LOOP (rest, b->indirect_children)
|
|
|
1360 Fkill_buffer (XCAR (rest));
|
|
|
1361
|
|
|
1362 UNGCPRO;
|
|
|
1363 }
|
|
|
1364
|
|
|
1365 /* Make this buffer not be current.
|
|
|
1366 In the process, notice if this is the sole visible buffer
|
|
|
1367 and give up if so. */
|
|
|
1368 if (b == current_buffer)
|
|
|
1369 {
|
|
|
1370 Fset_buffer (Fother_buffer (buf, Qnil, Qnil));
|
|
|
1371 if (b == current_buffer)
|
|
|
1372 return Qnil;
|
|
|
1373 }
|
|
|
1374
|
|
|
1375 /* Now there is no question: we can kill the buffer. */
|
|
|
1376
|
|
|
1377 #ifdef CLASH_DETECTION
|
|
|
1378 /* Unlock this buffer's file, if it is locked. */
|
|
|
1379 unlock_buffer (b);
|
|
|
1380 #endif /* CLASH_DETECTION */
|
|
|
1381
|
|
|
1382 {
|
|
|
1383 int speccount = specpdl_depth ();
|
|
|
1384 specbind (Qinhibit_quit, Qt);
|
|
|
1385
|
|
|
1386 kill_buffer_processes (buf);
|
|
|
1387
|
|
|
1388 /* #### This is a problem if this buffer is in a dedicated window.
|
|
|
1389 Need to undedicate any windows of this buffer first (and delete them?)
|
|
|
1390 */
|
|
|
1391 Freplace_buffer_in_windows (buf);
|
|
|
1392
|
|
|
1393 delete_from_buffer_alist (buf);
|
|
|
1394
|
|
|
1395 font_lock_buffer_was_killed (b);
|
|
|
1396
|
|
|
1397 /* Delete any auto-save file, if we saved it in this session. */
|
|
|
1398 if (STRINGP (b->auto_save_file_name)
|
|
|
1399 && b->auto_save_modified != 0
|
|
|
1400 && BUF_SAVE_MODIFF (b) < b->auto_save_modified)
|
|
|
1401 {
|
|
|
1402 if (!NILP (Vdelete_auto_save_files))
|
|
|
1403 internal_delete_file (b->auto_save_file_name);
|
|
|
1404 }
|
|
|
1405
|
|
|
1406 uninit_buffer_markers (b);
|
|
|
1407
|
|
|
1408 kill_buffer_local_variables (b);
|
|
|
1409
|
|
|
1410 b->name = Qnil;
|
|
|
1411 uninit_buffer_text (b, !!b->base_buffer);
|
|
|
1412 b->undo_list = Qnil;
|
|
|
1413 uninit_buffer_extents (b);
|
|
|
1414 if (b->base_buffer)
|
|
|
1415 {
|
|
|
1416 #ifdef ERROR_CHECK_BUFPOS
|
|
|
1417 assert (!NILP (memq_no_quit (buf, b->base_buffer->indirect_children)));
|
|
|
1418 #endif
|
|
|
1419 b->base_buffer->indirect_children =
|
|
|
1420 delq_no_quit (buf, b->base_buffer->indirect_children);
|
|
|
1421 }
|
|
|
1422
|
|
|
1423 /* Clear away all Lisp objects, so that they
|
|
|
1424 won't be protected from GC. */
|
|
|
1425 nuke_all_buffer_slots (b, Qnil);
|
|
|
1426
|
|
|
1427 unbind_to (speccount, Qnil);
|
|
|
1428 }
|
|
|
1429 return Qt;
|
|
|
1430 }
|
|
|
1431
|
|
|
1432 DEFUN ("record-buffer", Frecord_buffer,
|
|
|
1433 Srecord_buffer, 1, 1, 0 /*
|
|
2
|
1434 Place buffer BUF first in the buffer order.
|
|
|
1435 Call this function when a buffer is selected \"visibly\".
|
|
|
1436
|
|
|
1437 This function changes the global buffer order and the per-frame buffer
|
|
|
1438 order for the selected frame. The buffer order keeps track of recency
|
|
|
1439 of selection so that `other-buffer' will return a recently selected
|
|
|
1440 buffer. See `other-buffer' for more information.
|
|
0
|
1441 */ )
|
|
|
1442 (buf)
|
|
|
1443 Lisp_Object buf;
|
|
|
1444 {
|
|
|
1445 REGISTER Lisp_Object lynk, prev;
|
|
|
1446 struct frame *f = selected_frame ();
|
|
|
1447
|
|
|
1448 prev = Qnil;
|
|
|
1449 for (lynk = Vbuffer_alist; CONSP (lynk); lynk = XCDR (lynk))
|
|
|
1450 {
|
|
|
1451 if (EQ (XCDR (XCAR (lynk)), buf))
|
|
|
1452 break;
|
|
|
1453 prev = lynk;
|
|
|
1454 }
|
|
|
1455 /* Effectively do Vbuffer_alist = delq_no_quit (lynk, Vbuffer_alist) */
|
|
|
1456 if (NILP (prev))
|
|
|
1457 Vbuffer_alist = XCDR (Vbuffer_alist);
|
|
|
1458 else
|
|
|
1459 XCDR (prev) = XCDR (XCDR (prev));
|
|
|
1460 XCDR (lynk) = Vbuffer_alist;
|
|
|
1461 Vbuffer_alist = lynk;
|
|
|
1462
|
|
|
1463 /* That was the global one. Now do the same thing for the
|
|
|
1464 per-frame buffer-alist. */
|
|
|
1465 prev = Qnil;
|
|
|
1466 for (lynk = f->buffer_alist; CONSP (lynk); lynk = XCDR (lynk))
|
|
|
1467 {
|
|
|
1468 if (EQ (XCDR (XCAR (lynk)), buf))
|
|
|
1469 break;
|
|
|
1470 prev = lynk;
|
|
|
1471 }
|
|
|
1472 /* Effectively do f->buffer_alist = delq_no_quit (lynk, f->buffer_alist) */
|
|
|
1473 if (NILP (prev))
|
|
|
1474 f->buffer_alist = XCDR (f->buffer_alist);
|
|
|
1475 else
|
|
|
1476 XCDR (prev) = XCDR (XCDR (prev));
|
|
|
1477 XCDR (lynk) = f->buffer_alist;
|
|
|
1478 f->buffer_alist = lynk;
|
|
|
1479 return Qnil;
|
|
|
1480 }
|
|
|
1481
|
|
|
1482 DEFUN ("set-buffer-major-mode", Fset_buffer_major_mode,
|
|
|
1483 Sset_buffer_major_mode, 1, 1, 0 /*
|
|
|
1484 Set an appropriate major mode for BUFFER, according to `default-major-mode'.
|
|
|
1485 Use this function before selecting the buffer, since it may need to inspect
|
|
|
1486 the current buffer's major mode.
|
|
|
1487 */ )
|
|
|
1488 (buf)
|
|
|
1489 Lisp_Object buf;
|
|
|
1490 {
|
|
|
1491 int speccount = specpdl_depth ();
|
|
|
1492 REGISTER Lisp_Object function, tem;
|
|
|
1493
|
|
|
1494 function = XBUFFER (Vbuffer_defaults)->major_mode;
|
|
|
1495 if (NILP (function))
|
|
|
1496 {
|
|
|
1497 tem = Fget (current_buffer->major_mode, Qmode_class, Qnil);
|
|
|
1498 if (NILP (tem))
|
|
|
1499 function = current_buffer->major_mode;
|
|
|
1500 }
|
|
|
1501
|
|
|
1502 if (NILP (function) || EQ (function, Qfundamental_mode))
|
|
|
1503 return Qnil;
|
|
|
1504
|
|
|
1505 /* To select a nonfundamental mode,
|
|
|
1506 select the buffer temporarily and then call the mode function. */
|
|
|
1507
|
|
|
1508 record_unwind_protect (Fset_buffer, Fcurrent_buffer ());
|
|
|
1509
|
|
|
1510 Fset_buffer (buf);
|
|
|
1511 call0 (function);
|
|
|
1512
|
|
|
1513 return unbind_to (speccount, Qnil);
|
|
|
1514 }
|
|
|
1515
|
|
|
1516 void
|
|
|
1517 switch_to_buffer (Lisp_Object bufname, Lisp_Object norecord)
|
|
|
1518 {
|
|
|
1519 call2 (Qswitch_to_buffer, bufname, norecord);
|
|
|
1520 }
|
|
|
1521
|
|
|
1522
|
|
|
1523 DEFUN ("current-buffer", Fcurrent_buffer, Scurrent_buffer, 0, 0, 0 /*
|
|
|
1524 Return the current buffer as a Lisp object.
|
|
|
1525 */ )
|
|
|
1526 ()
|
|
|
1527 {
|
|
|
1528 Lisp_Object buf;
|
|
|
1529 XSETBUFFER (buf, current_buffer);
|
|
|
1530 return buf;
|
|
|
1531 }
|
|
|
1532
|
|
|
1533 /* Set the current buffer to B. */
|
|
|
1534
|
|
|
1535 void
|
|
|
1536 set_buffer_internal (struct buffer *b)
|
|
|
1537 {
|
|
|
1538 REGISTER struct buffer *old_buf;
|
|
|
1539 REGISTER Lisp_Object tail;
|
|
|
1540
|
|
|
1541 if (current_buffer == b)
|
|
|
1542 return;
|
|
|
1543
|
|
|
1544 INVALIDATE_PIXEL_TO_GLYPH_CACHE;
|
|
|
1545
|
|
|
1546 old_buf = current_buffer;
|
|
|
1547 current_buffer = b;
|
|
|
1548 invalidate_current_column (); /* invalidate indentation cache */
|
|
|
1549
|
|
|
1550 #ifdef HAVE_FEP
|
|
|
1551 if (!noninteractive && initialized)
|
|
|
1552 {
|
|
|
1553 extern Lisp_Object Ffep_force_on (), Ffep_force_off (), Ffep_get_mode ();
|
|
|
1554
|
|
|
1555 old_buf->fep_mode = Ffep_get_mode ();
|
|
|
1556
|
|
|
1557 if (!NILP (current_buffer->fep_mode))
|
|
|
1558 Ffep_force_on ();
|
|
|
1559 else
|
|
|
1560 Ffep_force_off ();
|
|
|
1561 }
|
|
|
1562 #endif
|
|
|
1563
|
|
|
1564 if (old_buf)
|
|
|
1565 {
|
|
|
1566 /* Put the undo list back in the base buffer, so that it appears
|
|
|
1567 that an indirect buffer shares the undo list of its base. */
|
|
|
1568 if (old_buf->base_buffer)
|
|
|
1569 old_buf->base_buffer->undo_list = old_buf->undo_list;
|
|
|
1570 }
|
|
|
1571
|
|
|
1572 /* Get the undo list from the base buffer, so that it appears
|
|
|
1573 that an indirect buffer shares the undo list of its base. */
|
|
|
1574 if (b->base_buffer)
|
|
|
1575 b->undo_list = b->base_buffer->undo_list;
|
|
|
1576
|
|
|
1577 /* Look down buffer's list of local Lisp variables
|
|
|
1578 to find and update any that forward into C variables. */
|
|
|
1579
|
|
|
1580 LIST_LOOP (tail, b->local_var_alist)
|
|
|
1581 {
|
|
|
1582 Lisp_Object sym = XCAR (XCAR (tail));
|
|
|
1583 Lisp_Object valcontents = XSYMBOL (sym)->value;
|
|
|
1584 if (SYMBOL_VALUE_MAGIC_P (valcontents))
|
|
|
1585 {
|
|
|
1586 /* Just reference the variable
|
|
|
1587 to cause it to become set for this buffer. */
|
|
16
|
1588 /* Use find_symbol_value_quickly to avoid an unnecessary O(n)
|
|
|
1589 lookup. */
|
|
|
1590 (void) find_symbol_value_quickly (XCAR (tail), 1);
|
|
0
|
1591 }
|
|
|
1592 }
|
|
|
1593
|
|
|
1594 /* Do the same with any others that were local to the previous buffer */
|
|
|
1595
|
|
|
1596 if (old_buf)
|
|
|
1597 {
|
|
16
|
1598 LIST_LOOP (tail, old_buf->local_var_alist)
|
|
0
|
1599 {
|
|
|
1600 Lisp_Object sym = XCAR (XCAR (tail));
|
|
|
1601 Lisp_Object valcontents = XSYMBOL (sym)->value;
|
|
|
1602
|
|
|
1603 if (SYMBOL_VALUE_MAGIC_P (valcontents))
|
|
|
1604 {
|
|
|
1605 /* Just reference the variable
|
|
|
1606 to cause it to become set for this buffer. */
|
|
16
|
1607 /* Use find_symbol_value_quickly with find_it_p as 0 to avoid an
|
|
|
1608 unnecessary O(n) lookup which is guaranteed to be worst case.
|
|
|
1609 Any symbols which are local are guaranteed to have been
|
|
|
1610 handled in the previous loop, above. */
|
|
|
1611 (void) find_symbol_value_quickly (sym, 0);
|
|
0
|
1612 }
|
|
|
1613 }
|
|
|
1614 }
|
|
|
1615 }
|
|
|
1616
|
|
|
1617 DEFUN ("set-buffer", Fset_buffer, Sset_buffer, 1, 1, 0 /*
|
|
|
1618 Make the buffer BUFNAME current for editing operations.
|
|
|
1619 BUFNAME may be a buffer or the name of an existing buffer.
|
|
|
1620 See also `save-excursion' when you want to make a buffer current temporarily.
|
|
|
1621 This function does not display the buffer, so its effect ends
|
|
|
1622 when the current command terminates.
|
|
|
1623 Use `switch-to-buffer' or `pop-to-buffer' to switch buffers permanently.
|
|
|
1624 */ )
|
|
|
1625 (bufname)
|
|
|
1626 Lisp_Object bufname;
|
|
|
1627 {
|
|
|
1628 Lisp_Object buffer;
|
|
|
1629 buffer = get_buffer (bufname, 0);
|
|
|
1630 if (NILP (buffer))
|
|
|
1631 error ("Selecting deleted or non-existent buffer");
|
|
|
1632 set_buffer_internal (XBUFFER (buffer));
|
|
|
1633 return buffer;
|
|
|
1634 }
|
|
|
1635
|
|
|
1636
|
|
|
1637 DEFUN ("barf-if-buffer-read-only", Fbarf_if_buffer_read_only,
|
|
|
1638 Sbarf_if_buffer_read_only, 0, 3, 0 /*
|
|
|
1639 Signal a `buffer-read-only' error if the buffer is read-only.
|
|
|
1640 Optional argument BUFFER defaults to the current buffer.
|
|
|
1641
|
|
|
1642 If optional argument START is non-nil, all extents in the buffer
|
|
|
1643 which overlap that part of the buffer are checked to ensure none has a
|
|
|
1644 `read-only' property. (Extents that lie completely within the range,
|
|
|
1645 however, are not checked.) END defaults to the value of START.
|
|
|
1646
|
|
|
1647 If START and END are equal, the range checked is [START, END] (i.e.
|
|
|
1648 closed on both ends); otherwise, the range checked is (START, END)
|
|
|
1649 (open on both ends), except that extents that lie completely within
|
|
|
1650 [START, END] are not checked. See `extent-in-region-p' for a fuller
|
|
|
1651 discussion.
|
|
|
1652 */ )
|
|
|
1653 (buffer, start, end)
|
|
|
1654 Lisp_Object buffer, start, end;
|
|
|
1655 {
|
|
|
1656 struct buffer *b = decode_buffer (buffer, 0);
|
|
|
1657 Bufpos s, e;
|
|
|
1658
|
|
|
1659 if (NILP (start))
|
|
|
1660 s = e = -1;
|
|
|
1661 else
|
|
|
1662 {
|
|
|
1663 if (NILP (end))
|
|
|
1664 end = start;
|
|
|
1665 get_buffer_range_char (b, start, end, &s, &e, 0);
|
|
|
1666 }
|
|
|
1667 barf_if_buffer_read_only (b, s, e);
|
|
|
1668
|
|
|
1669 return (Qnil);
|
|
|
1670 }
|
|
|
1671
|
|
|
1672 static void
|
|
|
1673 bury_buffer_1 (Lisp_Object buffer, Lisp_Object before,
|
|
|
1674 Lisp_Object *buffer_alist)
|
|
|
1675 {
|
|
|
1676 Lisp_Object aelt = rassq_no_quit (buffer, *buffer_alist);
|
|
|
1677 Lisp_Object lynk = memq_no_quit (aelt, *buffer_alist);
|
|
|
1678 Lisp_Object iter, before_before;
|
|
|
1679
|
|
|
1680 *buffer_alist = delq_no_quit (aelt, *buffer_alist);
|
|
|
1681 for (before_before = Qnil, iter = *buffer_alist;
|
|
|
1682 !NILP (iter) && !EQ (XCDR (XCAR (iter)), before);
|
|
|
1683 before_before = iter, iter = XCDR (iter))
|
|
|
1684 ;
|
|
|
1685 XCDR (lynk) = iter;
|
|
|
1686 if (!NILP (before_before))
|
|
|
1687 XCDR (before_before) = lynk;
|
|
|
1688 else
|
|
|
1689 *buffer_alist = lynk;
|
|
|
1690 }
|
|
|
1691
|
|
|
1692 DEFUN ("bury-buffer", Fbury_buffer, Sbury_buffer, 0, 2, "" /*
|
|
|
1693 Put BUFFER at the end of the list of all buffers.
|
|
|
1694 There it is the least likely candidate for `other-buffer' to return;
|
|
|
1695 thus, the least likely buffer for \\[switch-to-buffer] to select by default.
|
|
|
1696 If BUFFER is nil or omitted, bury the current buffer.
|
|
|
1697 Also, if BUFFER is nil or omitted, remove the current buffer from the
|
|
|
1698 selected window if it is displayed there.
|
|
|
1699 If BEFORE is non-nil, it specifies a buffer before which BUFFER
|
|
|
1700 will be placed, instead of being placed at the end.
|
|
|
1701 */ )
|
|
|
1702 (buffer, before)
|
|
|
1703 Lisp_Object buffer, before;
|
|
|
1704 {
|
|
|
1705 /* This function can GC */
|
|
|
1706 struct buffer *buf = decode_buffer (buffer, 1);
|
|
|
1707 /* If we're burying the current buffer, unshow it. */
|
|
|
1708 /* Note that the behavior of (bury-buffer nil) and
|
|
|
1709 (bury-buffer (current-buffer)) is not the same.
|
|
|
1710 This is illogical but is historical. Changing it
|
|
|
1711 breaks mh-e and TeX and such packages. */
|
|
|
1712 if (NILP (buffer))
|
|
|
1713 switch_to_buffer (Fother_buffer (Fcurrent_buffer (), Qnil, Qnil), Qnil);
|
|
|
1714 XSETBUFFER (buffer, buf);
|
|
|
1715
|
|
|
1716 if (!NILP (before))
|
|
|
1717 before = get_buffer (before, 1);
|
|
|
1718
|
|
|
1719 if (EQ (before, buffer))
|
|
|
1720 error ("Cannot place a buffer before itself");
|
|
|
1721
|
|
|
1722 bury_buffer_1 (buffer, before, &Vbuffer_alist);
|
|
|
1723 bury_buffer_1 (buffer, before, &selected_frame ()->buffer_alist);
|
|
|
1724
|
|
|
1725 return Qnil;
|
|
|
1726 }
|
|
|
1727
|
|
|
1728
|
|
|
1729 DEFUN ("erase-buffer", Ferase_buffer, Serase_buffer, 0, 1, "*" /*
|
|
|
1730 Delete the entire contents of the BUFFER.
|
|
|
1731 Any clipping restriction in effect (see `narrow-to-region') is removed,
|
|
|
1732 so the buffer is truly empty after this.
|
|
|
1733 BUFFER defaults to the current buffer if omitted.
|
|
|
1734 */ )
|
|
|
1735 (buffer)
|
|
|
1736 Lisp_Object buffer;
|
|
|
1737 {
|
|
|
1738 /* This function can GC */
|
|
|
1739 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
1740 /* #### yuck yuck yuck. This is gross. The old echo-area code,
|
|
|
1741 however, was the only place that called erase_buffer() with a
|
|
|
1742 non-zero NO_CLIP argument.
|
|
|
1743
|
|
|
1744 Someone needs to fix up the redisplay code so it is smarter
|
|
|
1745 about this, so that the NO_CLIP junk isn't necessary. */
|
|
|
1746 int no_clip = (b == XBUFFER (Vecho_area_buffer));
|
|
|
1747
|
|
|
1748 INVALIDATE_PIXEL_TO_GLYPH_CACHE;
|
|
|
1749
|
|
|
1750 widen_buffer (b, no_clip);
|
|
|
1751 buffer_delete_range (b, BUF_BEG (b), BUF_Z (b), 0);
|
|
|
1752 b->last_window_start = 1;
|
|
|
1753
|
|
|
1754 /* Prevent warnings, or suspension of auto saving, that would happen
|
|
|
1755 if future size is less than past size. Use of erase-buffer
|
|
|
1756 implies that the future text is not really related to the past text. */
|
|
|
1757 b->save_length = Qzero;
|
|
|
1758
|
|
|
1759 zmacs_region_stays = 0;
|
|
|
1760 return Qnil;
|
|
|
1761 }
|
|
|
1762
|
|
|
1763
|
|
|
1764
|
|
|
1765 DEFUN ("kill-all-local-variables", Fkill_all_local_variables,
|
|
|
1766 Skill_all_local_variables, 0, 0, 0 /*
|
|
|
1767 Switch to Fundamental mode by killing current buffer's local variables.
|
|
|
1768 Most local variable bindings are eliminated so that the default values
|
|
|
1769 become effective once more. Also, the syntax table is set from
|
|
|
1770 `standard-syntax-table', local keymap is set to nil,
|
|
|
1771 the abbrev table is set from `fundamental-mode-abbrev-table',
|
|
|
1772 and all specifier specifications whose locale is the current buffer
|
|
|
1773 are removed. This function also forces redisplay of the modeline.
|
|
|
1774
|
|
|
1775 Every function to select a new major mode starts by
|
|
|
1776 calling this function.
|
|
|
1777
|
|
|
1778 As a special exception, local variables whose names have
|
|
|
1779 a non-nil `permanent-local' property are not eliminated by this function.
|
|
|
1780
|
|
|
1781 The first thing this function does is run
|
|
|
1782 the normal hook `change-major-mode-hook'.
|
|
|
1783 */ )
|
|
|
1784 ()
|
|
|
1785 {
|
|
|
1786 /* This function can GC */
|
|
|
1787 run_hook (Qchange_major_mode_hook);
|
|
|
1788
|
|
|
1789 reset_buffer_local_variables (current_buffer, 0);
|
|
|
1790
|
|
|
1791 kill_buffer_local_variables (current_buffer);
|
|
|
1792
|
|
|
1793 kill_specifier_buffer_locals (Fcurrent_buffer ());
|
|
|
1794
|
|
|
1795 /* Force modeline redisplay. Useful here because all major mode
|
|
|
1796 commands call this function. */
|
|
|
1797 MARK_MODELINE_CHANGED;
|
|
|
1798
|
|
|
1799 return Qnil;
|
|
|
1800 }
|
|
|
1801
|
|
|
1802 #ifdef MEMORY_USAGE_STATS
|
|
|
1803
|
|
|
1804 struct buffer_stats
|
|
|
1805 {
|
|
|
1806 int text;
|
|
|
1807 int markers;
|
|
|
1808 int extents;
|
|
|
1809 int other;
|
|
|
1810 };
|
|
|
1811
|
|
|
1812 static int
|
|
|
1813 compute_buffer_text_usage (struct buffer *b, struct overhead_stats *ovstats)
|
|
|
1814 {
|
|
|
1815 int malloc_use;
|
|
|
1816 int was_requested;
|
|
|
1817 int gap;
|
|
|
1818
|
|
|
1819 was_requested = b->text->z - 1;
|
|
|
1820 gap = b->text->gap_size;
|
|
|
1821 malloc_use = malloced_storage_size (b->text->beg, was_requested + gap, 0);
|
|
|
1822 ovstats->gap_overhead += gap;
|
|
|
1823 ovstats->was_requested += was_requested;
|
|
|
1824 ovstats->malloc_overhead += malloc_use - (was_requested + gap);
|
|
|
1825 return malloc_use;
|
|
|
1826 }
|
|
|
1827
|
|
|
1828 static void
|
|
|
1829 compute_buffer_usage (struct buffer *b, struct buffer_stats *stats,
|
|
|
1830 struct overhead_stats *ovstats)
|
|
|
1831 {
|
|
|
1832 memset (stats, 0, sizeof (*stats));
|
|
|
1833 stats->other += malloced_storage_size (b, sizeof (struct buffer), ovstats);
|
|
|
1834 stats->text += compute_buffer_text_usage (b, ovstats);
|
|
|
1835 stats->markers += compute_buffer_marker_usage (b, ovstats);
|
|
|
1836 stats->extents += compute_buffer_extent_usage (b, ovstats);
|
|
|
1837 }
|
|
|
1838
|
|
|
1839 DEFUN ("buffer-memory-usage", Fbuffer_memory_usage, Sbuffer_memory_usage,
|
|
|
1840 1, 1, 0 /*
|
|
|
1841 Return stats about the memory usage of buffer BUFFER.
|
|
|
1842 The values returned are in the form an alist of usage types and byte
|
|
|
1843 counts. The byte counts attempt to encompass all the memory used
|
|
|
1844 by the buffer (separate from the memory logically associated with a
|
|
|
1845 buffer or frame), including internal structures and any malloc()
|
|
|
1846 overhead associated with them. In practice, the byte counts are
|
|
|
1847 underestimated because certain memory usage is very hard to determine
|
|
|
1848 (e.g. the amount of memory used inside the Xt library or inside the
|
|
|
1849 X server) and because there is other stuff that might logically
|
|
|
1850 be associated with a window, buffer, or frame (e.g. window configurations,
|
|
|
1851 glyphs) but should not obviously be included in the usage counts.
|
|
|
1852
|
|
|
1853 Multiple slices of the total memory usage may be returned, separated
|
|
|
1854 by a nil. Each slice represents a particular view of the memory, a
|
|
|
1855 particular way of partitioning it into groups. Within a slice, there
|
|
|
1856 is no overlap between the groups of memory, and each slice collectively
|
|
|
1857 represents all the memory concerned.
|
|
|
1858 */ )
|
|
|
1859 (buffer)
|
|
|
1860 Lisp_Object buffer;
|
|
|
1861 {
|
|
|
1862 struct buffer_stats stats;
|
|
|
1863 struct overhead_stats ovstats;
|
|
|
1864
|
|
|
1865 CHECK_BUFFER (buffer); /* dead buffers should be allowed, no? */
|
|
|
1866 memset (&ovstats, 0, sizeof (ovstats));
|
|
|
1867 compute_buffer_usage (XBUFFER (buffer), &stats, &ovstats);
|
|
|
1868
|
|
|
1869 return nconc2 (list4 (Fcons (Qtext, make_int (stats.text)),
|
|
|
1870 Fcons (Qmarkers, make_int (stats.markers)),
|
|
|
1871 Fcons (Qextents, make_int (stats.extents)),
|
|
|
1872 Fcons (Qother, make_int (stats.other))),
|
|
|
1873 list5 (Qnil,
|
|
|
1874 Fcons (Qactually_requested,
|
|
|
1875 make_int (ovstats.was_requested)),
|
|
|
1876 Fcons (Qmalloc_overhead,
|
|
|
1877 make_int (ovstats.malloc_overhead)),
|
|
|
1878 Fcons (Qgap_overhead,
|
|
|
1879 make_int (ovstats.malloc_overhead)),
|
|
|
1880 Fcons (Qdynarr_overhead,
|
|
|
1881 make_int (ovstats.dynarr_overhead))));
|
|
|
1882 }
|
|
|
1883
|
|
|
1884 #endif /* MEMORY_USAGE_STATS */
|
|
|
1885
|
|
|
1886 void
|
|
|
1887 syms_of_buffer (void)
|
|
|
1888 {
|
|
|
1889 defsymbol (&Qbuffer_live_p, "buffer-live-p");
|
|
|
1890 defsymbol (&Qbuffer_or_string_p, "buffer-or-string-p");
|
|
|
1891 defsymbol (&Qmode_class, "mode-class");
|
|
|
1892 defsymbol (&Qrename_auto_save_file, "rename-auto-save-file");
|
|
|
1893 defsymbol (&Qkill_buffer_hook, "kill-buffer-hook");
|
|
|
1894 defsymbol (&Qpermanent_local, "permanent-local");
|
|
|
1895
|
|
|
1896 defsymbol (&Qfirst_change_hook, "first-change-hook");
|
|
|
1897 defsymbol (&Qbefore_change_functions, "before-change-functions");
|
|
|
1898 defsymbol (&Qafter_change_functions, "after-change-functions");
|
|
|
1899
|
|
|
1900 /* #### Obsolete, for compatibility */
|
|
|
1901 defsymbol (&Qbefore_change_function, "before-change-function");
|
|
|
1902 defsymbol (&Qafter_change_function, "after-change-function");
|
|
|
1903
|
|
|
1904 defsymbol (&Qbuffer_file_name, "buffer-file-name");
|
|
|
1905 defsymbol (&Qbuffer_undo_list, "buffer-undo-list");
|
|
|
1906 defsymbol (&Qdefault_directory, "default-directory");
|
|
|
1907
|
|
|
1908 defsymbol (&Qget_file_buffer, "get-file-buffer");
|
|
|
1909 defsymbol (&Qchange_major_mode_hook, "change-major-mode-hook");
|
|
|
1910
|
|
|
1911 defsymbol (&Qfundamental_mode, "fundamental-mode");
|
|
|
1912
|
|
|
1913 defsymbol (&Qfind_file_compare_truenames, "find-file-compare-truenames");
|
|
|
1914
|
|
|
1915 defsymbol (&Qswitch_to_buffer, "switch-to-buffer");
|
|
|
1916
|
|
|
1917 defsubr (&Sbufferp);
|
|
|
1918 defsubr (&Sbuffer_live_p);
|
|
|
1919 defsubr (&Sbuffer_list);
|
|
|
1920 defsubr (&Sdecode_buffer);
|
|
|
1921 defsubr (&Sget_buffer);
|
|
|
1922 defsubr (&Sget_file_buffer);
|
|
|
1923 defsubr (&Sget_buffer_create);
|
|
|
1924 defsubr (&Smake_indirect_buffer);
|
|
|
1925
|
|
|
1926 defsubr (&Sgenerate_new_buffer_name);
|
|
|
1927 defsubr (&Sbuffer_name);
|
|
|
1928 defsubr (&Sbuffer_file_name);
|
|
|
1929 defsubr (&Sbuffer_base_buffer);
|
|
|
1930 defsubr (&Sbuffer_indirect_children);
|
|
|
1931 defsubr (&Sbuffer_local_variables);
|
|
|
1932 defsubr (&Sbuffer_dedicated_frame);
|
|
|
1933 defsubr (&Sset_buffer_dedicated_frame);
|
|
|
1934 defsubr (&Sbuffer_modified_p);
|
|
|
1935 defsubr (&Sset_buffer_modified_p);
|
|
|
1936 defsubr (&Sbuffer_modified_tick);
|
|
|
1937 defsubr (&Srename_buffer);
|
|
|
1938 defsubr (&Sother_buffer);
|
|
|
1939 defsubr (&Sbuffer_disable_undo);
|
|
|
1940 defsubr (&Sbuffer_enable_undo);
|
|
|
1941 defsubr (&Skill_buffer);
|
|
|
1942 defsubr (&Serase_buffer);
|
|
|
1943 defsubr (&Srecord_buffer);
|
|
|
1944 defsubr (&Sset_buffer_major_mode);
|
|
|
1945 defsubr (&Scurrent_buffer);
|
|
|
1946 defsubr (&Sset_buffer);
|
|
|
1947 defsubr (&Sbarf_if_buffer_read_only);
|
|
|
1948 defsubr (&Sbury_buffer);
|
|
|
1949 defsubr (&Skill_all_local_variables);
|
|
|
1950 #ifdef MEMORY_USAGE_STATS
|
|
|
1951 defsubr (&Sbuffer_memory_usage);
|
|
|
1952 #endif
|
|
|
1953
|
|
|
1954 deferror (&Qprotected_field, "protected-field",
|
|
|
1955 "Attempt to modify a protected field", Qerror);
|
|
|
1956 }
|
|
|
1957
|
|
|
1958 /* initialize the buffer routines */
|
|
|
1959 void
|
|
|
1960 vars_of_buffer (void)
|
|
|
1961 {
|
|
|
1962 /* This function can GC */
|
|
|
1963 staticpro (&QSFundamental);
|
|
|
1964 staticpro (&QSscratch);
|
|
|
1965 staticpro (&Vbuffer_alist);
|
|
|
1966
|
|
|
1967 QSFundamental = Fpurecopy (build_string ("Fundamental"));
|
|
|
1968 QSscratch = Fpurecopy (build_string (DEFER_GETTEXT ("*scratch*")));
|
|
|
1969
|
|
|
1970 Vbuffer_alist = Qnil;
|
|
|
1971 current_buffer = 0;
|
|
|
1972
|
|
|
1973 DEFVAR_LISP ("change-major-mode-hook", &Vchange_major_mode_hook /*
|
|
|
1974 List of hooks to be run before killing local variables in a buffer.
|
|
2
|
1975 This should be used by any mode that temporarily alters the contents or
|
|
0
|
1976 the read-only state of the buffer. See also `kill-all-local-variables'.
|
|
|
1977 */ );
|
|
|
1978 Vchange_major_mode_hook = Qnil;
|
|
|
1979
|
|
|
1980 DEFVAR_BOOL ("find-file-compare-truenames", &find_file_compare_truenames /*
|
|
|
1981 If this is true, then the find-file command will check the truenames
|
|
|
1982 of all visited files when deciding whether a given file is already in
|
|
|
1983 a buffer, instead of just the buffer-file-name. This means that if you
|
|
|
1984 attempt to visit another file which is a symbolic-link to a file which is
|
|
|
1985 already in a buffer, the existing buffer will be found instead of a newly-
|
|
|
1986 created one. This works if any component of the pathname (including a non-
|
|
|
1987 terminal component) is a symbolic link as well, but doesn't work with hard
|
|
|
1988 links (nothing does).
|
|
|
1989
|
|
|
1990 See also the variable find-file-use-truenames.
|
|
|
1991 */ );
|
|
|
1992 find_file_compare_truenames = 0;
|
|
|
1993
|
|
|
1994 DEFVAR_BOOL ("find-file-use-truenames", &find_file_use_truenames /*
|
|
|
1995 If this is true, then a buffer's visited file-name will always be
|
|
|
1996 chased back to the real file; it will never be a symbolic link, and there
|
|
|
1997 will never be a symbolic link anywhere in its directory path.
|
|
|
1998 That is, the buffer-file-name and buffer-file-truename will be equal.
|
|
|
1999 This doesn't work with hard links.
|
|
|
2000
|
|
|
2001 See also the variable find-file-compare-truenames.
|
|
|
2002 */ );
|
|
|
2003 find_file_use_truenames = 0;
|
|
|
2004
|
|
|
2005 DEFVAR_LISP ("before-change-functions", &Vbefore_change_functions /*
|
|
|
2006 List of functions to call before each text change.
|
|
|
2007 Two arguments are passed to each function: the positions of
|
|
|
2008 the beginning and end of the range of old text to be changed.
|
|
|
2009 \(For an insertion, the beginning and end are at the same place.)
|
|
|
2010 No information is given about the length of the text after the change.
|
|
|
2011
|
|
|
2012 Buffer changes made while executing the `before-change-functions'
|
|
|
2013 don't call any before-change or after-change functions.
|
|
|
2014 */ );
|
|
|
2015 Vbefore_change_functions = Qnil;
|
|
|
2016
|
|
|
2017 /* FSF Emacs has the following additional doc at the end of
|
|
|
2018 before-change-functions and after-change-functions:
|
|
|
2019
|
|
|
2020 That's because these variables are temporarily set to nil.\n\
|
|
|
2021 As a result, a hook function cannot straightforwardly alter the value of\n\
|
|
|
2022 these variables. See the Emacs Lisp manual for a way of\n\
|
|
|
2023 accomplishing an equivalent result by using other variables.
|
|
|
2024
|
|
|
2025 But this doesn't apply under XEmacs because things are
|
|
|
2026 handled better. */
|
|
|
2027
|
|
|
2028 DEFVAR_LISP ("after-change-functions", &Vafter_change_functions /*
|
|
|
2029 List of functions to call after each text change.
|
|
|
2030 Three arguments are passed to each function: the positions of
|
|
|
2031 the beginning and end of the range of changed text,
|
|
|
2032 and the length of the pre-change text replaced by that range.
|
|
|
2033 \(For an insertion, the pre-change length is zero;
|
|
|
2034 for a deletion, that length is the number of characters deleted,
|
|
|
2035 and the post-change beginning and end are at the same place.)
|
|
|
2036
|
|
|
2037 Buffer changes made while executing `after-change-functions'
|
|
|
2038 don't call any before-change or after-change functions.
|
|
|
2039 */ );
|
|
|
2040 Vafter_change_functions = Qnil;
|
|
|
2041
|
|
|
2042 DEFVAR_LISP ("before-change-function", &Vbefore_change_function /*
|
|
|
2043
|
|
|
2044 */ ); /* obsoleteness will be documented */
|
|
|
2045 Vbefore_change_function = Qnil;
|
|
|
2046
|
|
|
2047 DEFVAR_LISP ("after-change-function", &Vafter_change_function /*
|
|
|
2048
|
|
|
2049 */ ); /* obsoleteness will be documented */
|
|
|
2050 Vafter_change_function = Qnil;
|
|
|
2051
|
|
|
2052 DEFVAR_LISP ("first-change-hook", &Vfirst_change_hook /*
|
|
|
2053 A list of functions to call before changing a buffer which is unmodified.
|
|
|
2054 The functions are run using the `run-hooks' function.
|
|
|
2055 */ );
|
|
|
2056 Vfirst_change_hook = Qnil;
|
|
|
2057
|
|
|
2058 #if 0 /* FSFmacs */
|
|
|
2059 xxDEFVAR_LISP ("transient-mark-mode", &Vtransient_mark_mode /*
|
|
|
2060 *Non-nil means deactivate the mark when the buffer contents change.
|
|
|
2061 */ );
|
|
|
2062 Vtransient_mark_mode = Qnil;
|
|
|
2063 #endif
|
|
|
2064
|
|
|
2065 DEFVAR_INT ("undo-threshold", &undo_threshold /*
|
|
|
2066 Keep no more undo information once it exceeds this size.
|
|
|
2067 This threshold is applied when garbage collection happens.
|
|
|
2068 The size is counted as the number of bytes occupied,
|
|
|
2069 which includes both saved text and other data.
|
|
|
2070 */ );
|
|
|
2071 undo_threshold = 20000;
|
|
|
2072
|
|
|
2073 DEFVAR_INT ("undo-high-threshold", &undo_high_threshold /*
|
|
|
2074 Don't keep more than this much size of undo information.
|
|
|
2075 A command which pushes past this size is itself forgotten.
|
|
|
2076 This threshold is applied when garbage collection happens.
|
|
|
2077 The size is counted as the number of bytes occupied,
|
|
|
2078 which includes both saved text and other data.
|
|
|
2079 */ );
|
|
|
2080 undo_high_threshold = 30000;
|
|
|
2081
|
|
|
2082 DEFVAR_LISP ("inhibit-read-only", &Vinhibit_read_only /*
|
|
|
2083 *Non-nil means disregard read-only status of buffers or characters.
|
|
|
2084 If the value is t, disregard `buffer-read-only' and all `read-only'
|
|
|
2085 text properties. If the value is a list, disregard `buffer-read-only'
|
|
|
2086 and disregard a `read-only' extent property or text property if the
|
|
|
2087 property value is a member of the list.
|
|
|
2088 */ );
|
|
|
2089 Vinhibit_read_only = Qnil;
|
|
|
2090
|
|
|
2091 DEFVAR_LISP ("kill-buffer-query-functions", &Vkill_buffer_query_functions /*
|
|
|
2092 List of functions called with no args to query before killing a buffer.
|
|
|
2093 */ );
|
|
|
2094 Vkill_buffer_query_functions = Qnil;
|
|
|
2095
|
|
|
2096 DEFVAR_LISP ("delete-auto-save-files", &Vdelete_auto_save_files /*
|
|
|
2097 *Non-nil means delete auto-save file when a buffer is saved or killed.
|
|
|
2098 */ );
|
|
|
2099 Vdelete_auto_save_files = Qt;
|
|
|
2100 }
|
|
|
2101
|
|
|
2102 /* DOC is ignored because it is snagged and recorded externally
|
|
|
2103 * by make-docfile */
|
|
|
2104 /* Renamed from DEFVAR_PER_BUFFER because FSFmacs D_P_B takes
|
|
|
2105 * a bogus extra arg, which confuses an otherwise identical make-docfile.c */
|
|
|
2106 /* Declaring this stuff as const produces 'Cannot reinitialize' messages
|
|
|
2107 from SunPro C's fix-and-continue feature (a way neato feature that
|
|
|
2108 makes debugging unbelievably more bearable) */
|
|
|
2109 #define DEFVAR_BUFFER_LOCAL(lname, field_name) \
|
|
|
2110 do { static CONST_IF_NOT_DEBUG struct symbol_value_forward I_hate_C \
|
|
|
2111 = { { { { lrecord_symbol_value_forward }, \
|
|
|
2112 (void *) &(buffer_local_flags.field_name), 69 }, \
|
|
|
2113 SYMVAL_CURRENT_BUFFER_FORWARD }, 0 }; \
|
|
|
2114 defvar_buffer_local ((lname), &I_hate_C); \
|
|
|
2115 } while (0)
|
|
|
2116
|
|
|
2117 #define DEFVAR_BUFFER_LOCAL_MAGIC(lname, field_name, magicfun) \
|
|
|
2118 do { static CONST_IF_NOT_DEBUG struct symbol_value_forward I_hate_C \
|
|
|
2119 = { { { { lrecord_symbol_value_forward }, \
|
|
|
2120 (void *) &(buffer_local_flags.field_name), 69 }, \
|
|
|
2121 SYMVAL_CURRENT_BUFFER_FORWARD }, magicfun }; \
|
|
|
2122 defvar_buffer_local ((lname), &I_hate_C); \
|
|
|
2123 } while (0)
|
|
|
2124
|
|
|
2125 #define DEFVAR_CONST_BUFFER_LOCAL(lname, field_name) \
|
|
|
2126 do { static CONST_IF_NOT_DEBUG struct symbol_value_forward I_hate_C \
|
|
|
2127 = { { { { lrecord_symbol_value_forward }, \
|
|
|
2128 (void *) &(buffer_local_flags.field_name), 69 }, \
|
|
|
2129 SYMVAL_CONST_CURRENT_BUFFER_FORWARD }, 0 }; \
|
|
|
2130 defvar_buffer_local ((lname), &I_hate_C); \
|
|
|
2131 } while (0)
|
|
|
2132
|
|
|
2133 #define DEFVAR_CONST_BUFFER_LOCAL_MAGIC(lname, field_name, magicfun) \
|
|
|
2134 do { static CONST_IF_NOT_DEBUG struct symbol_value_forward I_hate_C \
|
|
|
2135 = { { { { lrecord_symbol_value_forward }, \
|
|
|
2136 (void *) &(buffer_local_flags.field_name), 69 }, \
|
|
|
2137 SYMVAL_CONST_CURRENT_BUFFER_FORWARD }, magicfun }; \
|
|
|
2138 defvar_buffer_local ((lname), &I_hate_C); \
|
|
|
2139 } while (0)
|
|
|
2140
|
|
|
2141 static void
|
|
|
2142 defvar_buffer_local (CONST char *namestring,
|
|
|
2143 CONST struct symbol_value_forward *m)
|
|
|
2144 {
|
|
|
2145 int offset = ((char *)symbol_value_forward_forward (m)
|
|
|
2146 - (char *)&buffer_local_flags);
|
|
|
2147
|
|
|
2148 defvar_mumble (namestring, m, sizeof (*m));
|
|
|
2149
|
|
|
2150 *((Lisp_Object *)(offset + (char *)XBUFFER (Vbuffer_local_symbols)))
|
|
|
2151 = intern (namestring);
|
|
|
2152 }
|
|
|
2153
|
|
|
2154 /* DOC is ignored because it is snagged and recorded externally
|
|
|
2155 * by make-docfile */
|
|
|
2156 #define DEFVAR_BUFFER_DEFAULTS(lname, field_name) \
|
|
|
2157 do { static CONST_IF_NOT_DEBUG struct symbol_value_forward I_hate_C \
|
|
|
2158 = { { { { lrecord_symbol_value_forward }, \
|
|
|
2159 (void *) &(buffer_local_flags.field_name), 69 }, \
|
|
|
2160 SYMVAL_DEFAULT_BUFFER_FORWARD }, 0 }; \
|
|
|
2161 defvar_mumble ((lname), &I_hate_C, sizeof (I_hate_C)); \
|
|
|
2162 } while (0)
|
|
|
2163
|
|
|
2164 #define DEFVAR_BUFFER_DEFAULTS_MAGIC(lname, field_name, magicfun) \
|
|
|
2165 do { static CONST_IF_NOT_DEBUG struct symbol_value_forward I_hate_C \
|
|
|
2166 = { { { { lrecord_symbol_value_forward }, \
|
|
|
2167 (void *) &(buffer_local_flags.field_name), 69 }, \
|
|
|
2168 SYMVAL_DEFAULT_BUFFER_FORWARD }, magicfun }; \
|
|
|
2169 defvar_mumble ((lname), &I_hate_C, sizeof (I_hate_C)); \
|
|
|
2170 } while (0)
|
|
|
2171
|
|
|
2172 static void
|
|
|
2173 nuke_all_buffer_slots (struct buffer *b, Lisp_Object zap)
|
|
|
2174 {
|
|
|
2175 zero_lcrecord (b);
|
|
|
2176
|
|
|
2177 #define MARKED_SLOT(x) b->x = (zap);
|
|
|
2178 #include "bufslots.h"
|
|
|
2179 #undef MARKED_SLOT
|
|
|
2180 }
|
|
|
2181
|
|
|
2182 void
|
|
|
2183 complex_vars_of_buffer (void)
|
|
|
2184 {
|
|
|
2185 /* Make sure all markable slots in buffer_defaults
|
|
|
2186 are initialized reasonably, so mark_buffer won't choke.
|
|
|
2187 */
|
|
|
2188 struct buffer *defs = alloc_lcrecord (sizeof (struct buffer),
|
|
|
2189 lrecord_buffer);
|
|
|
2190 struct buffer *syms = alloc_lcrecord (sizeof (struct buffer),
|
|
|
2191 lrecord_buffer);
|
|
|
2192
|
|
|
2193 staticpro (&Vbuffer_defaults);
|
|
|
2194 staticpro (&Vbuffer_local_symbols);
|
|
|
2195 XSETBUFFER (Vbuffer_defaults, defs);
|
|
|
2196 XSETBUFFER (Vbuffer_local_symbols, syms);
|
|
|
2197
|
|
|
2198 nuke_all_buffer_slots (syms, Qnil);
|
|
|
2199 nuke_all_buffer_slots (defs, Qnil);
|
|
|
2200 defs->text = &defs->own_text;
|
|
|
2201 syms->text = &syms->own_text;
|
|
|
2202
|
|
|
2203 /* Set up the non-nil default values of various buffer slots.
|
|
|
2204 Must do these before making the first buffer.
|
|
|
2205 */
|
|
|
2206 defs->major_mode = Qfundamental_mode;
|
|
|
2207 defs->mode_name = QSFundamental;
|
|
|
2208 defs->abbrev_table = Qnil; /* real default setup by Lisp code */
|
|
|
2209 defs->downcase_table = Vascii_downcase_table;
|
|
|
2210 defs->upcase_table = Vascii_upcase_table;
|
|
|
2211 defs->case_canon_table = Vascii_canon_table;
|
|
|
2212 defs->case_eqv_table = Vascii_eqv_table;
|
|
|
2213 defs->syntax_table = Vstandard_syntax_table;
|
|
|
2214
|
|
|
2215 defs->modeline_format = build_string ("%-"); /* reset in loaddefs.el */
|
|
|
2216 defs->case_fold_search = Qt;
|
|
|
2217 defs->selective_display_ellipses = Qt;
|
|
|
2218 defs->tab_width = make_int (8);
|
|
|
2219 defs->ctl_arrow = Qt;
|
|
|
2220 defs->fill_column = make_int (70);
|
|
|
2221 defs->left_margin = Qzero;
|
|
|
2222 defs->save_length = Qzero; /* lisp code wants int-or-nil */
|
|
|
2223 defs->modtime = 0;
|
|
|
2224 defs->auto_save_modified = 0;
|
|
|
2225 defs->auto_save_failure_time = -1;
|
|
|
2226 defs->invisibility_spec = Qt;
|
|
|
2227
|
|
|
2228 {
|
|
|
2229 /* 0 means var is always local. Default used only at creation.
|
|
|
2230 * -1 means var is always local. Default used only at reset and
|
|
|
2231 * creation.
|
|
|
2232 * -2 means there's no lisp variable corresponding to this slot
|
|
|
2233 * and the default is only used at creation.
|
|
|
2234 * -3 means no Lisp variable. Default used only at reset and creation.
|
|
|
2235 * >0 is mask. Var is local if ((buffer->local_var_flags & mask) != 0)
|
|
|
2236 * Otherwise default is used.
|
|
|
2237 */
|
|
|
2238 Lisp_Object always_local_no_default = make_int (0);
|
|
|
2239 Lisp_Object always_local_resettable = make_int (-1);
|
|
|
2240 Lisp_Object resettable = make_int (-3);
|
|
|
2241
|
|
|
2242 /* Assign the local-flags to the slots that have default values.
|
|
|
2243 The local flag is a bit that is used in the buffer
|
|
|
2244 to say that it has its own local value for the slot.
|
|
|
2245 The local flag bits are in the local_var_flags slot of the
|
|
|
2246 buffer. */
|
|
|
2247
|
|
|
2248 nuke_all_buffer_slots (&buffer_local_flags, make_int (-2));
|
|
|
2249 buffer_local_flags.filename = always_local_no_default;
|
|
|
2250 buffer_local_flags.directory = always_local_no_default;
|
|
|
2251 buffer_local_flags.backed_up = always_local_no_default;
|
|
|
2252 buffer_local_flags.save_length = always_local_no_default;
|
|
|
2253 buffer_local_flags.auto_save_file_name = always_local_no_default;
|
|
|
2254 buffer_local_flags.read_only = always_local_no_default;
|
|
|
2255
|
|
|
2256 buffer_local_flags.major_mode = always_local_resettable;
|
|
|
2257 buffer_local_flags.mode_name = always_local_resettable;
|
|
|
2258 buffer_local_flags.undo_list = always_local_no_default;
|
|
|
2259 #if 0 /* FSFmacs */
|
|
|
2260 buffer_local_flags.mark_active = always_local_resettable;
|
|
|
2261 #endif
|
|
|
2262 buffer_local_flags.point_before_scroll = always_local_resettable;
|
|
|
2263 buffer_local_flags.file_truename = always_local_no_default;
|
|
|
2264 buffer_local_flags.invisibility_spec = always_local_resettable;
|
|
|
2265 buffer_local_flags.file_format = always_local_resettable;
|
|
|
2266 buffer_local_flags.generated_modeline_string = always_local_no_default;
|
|
|
2267
|
|
|
2268 buffer_local_flags.keymap = resettable;
|
|
|
2269 buffer_local_flags.downcase_table = resettable;
|
|
|
2270 buffer_local_flags.upcase_table = resettable;
|
|
|
2271 buffer_local_flags.case_canon_table = resettable;
|
|
|
2272 buffer_local_flags.case_eqv_table = resettable;
|
|
|
2273 buffer_local_flags.syntax_table = resettable;
|
|
|
2274
|
|
|
2275 buffer_local_flags.modeline_format = make_int (1);
|
|
|
2276 buffer_local_flags.abbrev_mode = make_int (2);
|
|
|
2277 buffer_local_flags.overwrite_mode = make_int (4);
|
|
|
2278 buffer_local_flags.case_fold_search = make_int (8);
|
|
|
2279 buffer_local_flags.auto_fill_function = make_int (0x10);
|
|
|
2280 buffer_local_flags.selective_display = make_int (0x20);
|
|
|
2281 buffer_local_flags.selective_display_ellipses = make_int (0x40);
|
|
|
2282 buffer_local_flags.tab_width = make_int (0x80);
|
|
|
2283 buffer_local_flags.truncate_lines = make_int (0x100);
|
|
|
2284 buffer_local_flags.ctl_arrow = make_int (0x200);
|
|
|
2285 buffer_local_flags.fill_column = make_int (0x400);
|
|
|
2286 buffer_local_flags.left_margin = make_int (0x800);
|
|
|
2287 buffer_local_flags.abbrev_table = make_int (0x1000);
|
|
|
2288 #ifdef REGION_CACHE_NEEDS_WORK
|
|
|
2289 buffer_local_flags.cache_long_line_scans = make_int (0x2000);
|
|
|
2290 #endif
|
|
|
2291 buffer_local_flags.buffer_file_type = make_int (0x4000);
|
|
|
2292
|
|
|
2293 /* #### Warning, 0x4000000 (that's six zeroes) is the largest number
|
|
|
2294 currently allowable due to the XINT() handling of this value.
|
|
|
2295 With some rearrangement you can get 4 more bits. */
|
|
|
2296 }
|
|
|
2297
|
|
|
2298 DEFVAR_BUFFER_DEFAULTS ("default-modeline-format", modeline_format /*
|
|
|
2299 Default value of `modeline-format' for buffers that don't override it.
|
|
|
2300 This is the same as (default-value 'modeline-format).
|
|
|
2301 */ );
|
|
|
2302
|
|
|
2303 DEFVAR_BUFFER_DEFAULTS ("default-abbrev-mode", abbrev_mode /*
|
|
|
2304 Default value of `abbrev-mode' for buffers that do not override it.
|
|
|
2305 This is the same as (default-value 'abbrev-mode).
|
|
|
2306 */ );
|
|
|
2307
|
|
|
2308 DEFVAR_BUFFER_DEFAULTS ("default-ctl-arrow", ctl_arrow /*
|
|
|
2309 Default value of `ctl-arrow' for buffers that do not override it.
|
|
|
2310 This is the same as (default-value 'ctl-arrow).
|
|
|
2311 */ );
|
|
|
2312
|
|
|
2313 #if 0 /* #### make this a specifier! */
|
|
|
2314 DEFVAR_BUFFER_DEFAULTS ("default-display-direction", display_direction /*
|
|
|
2315 Default display-direction for buffers that do not override it.
|
|
|
2316 This is the same as (default-value 'display-direction).
|
|
|
2317 Note: This is not yet implemented.
|
|
|
2318 */ );
|
|
|
2319 #endif
|
|
|
2320
|
|
|
2321 DEFVAR_BUFFER_DEFAULTS ("default-truncate-lines", truncate_lines /*
|
|
|
2322 Default value of `truncate-lines' for buffers that do not override it.
|
|
|
2323 This is the same as (default-value 'truncate-lines).
|
|
|
2324 */ );
|
|
|
2325
|
|
|
2326 DEFVAR_BUFFER_DEFAULTS ("default-fill-column", fill_column /*
|
|
|
2327 Default value of `fill-column' for buffers that do not override it.
|
|
|
2328 This is the same as (default-value 'fill-column).
|
|
|
2329 */ );
|
|
|
2330
|
|
|
2331 DEFVAR_BUFFER_DEFAULTS ("default-left-margin", left_margin /*
|
|
|
2332 Default value of `left-margin' for buffers that do not override it.
|
|
|
2333 This is the same as (default-value 'left-margin).
|
|
|
2334 */ );
|
|
|
2335
|
|
|
2336 DEFVAR_BUFFER_DEFAULTS ("default-tab-width", tab_width /*
|
|
|
2337 Default value of `tab-width' for buffers that do not override it.
|
|
|
2338 This is the same as (default-value 'tab-width).
|
|
|
2339 */ );
|
|
|
2340
|
|
|
2341 DEFVAR_BUFFER_DEFAULTS ("default-case-fold-search", case_fold_search /*
|
|
|
2342 Default value of `case-fold-search' for buffers that don't override it.
|
|
|
2343 This is the same as (default-value 'case-fold-search).
|
|
|
2344 */ );
|
|
|
2345
|
|
|
2346 DEFVAR_BUFFER_DEFAULTS ("default-buffer-file-type", buffer_file_type /*
|
|
|
2347 Default file type for buffers that do not override it.
|
|
|
2348 This is the same as (default-value 'buffer-file-type).
|
|
|
2349 The file type is nil for text, t for binary.
|
|
|
2350 */ );
|
|
|
2351
|
|
|
2352 DEFVAR_BUFFER_LOCAL ("modeline-format", modeline_format /*
|
|
|
2353 Template for displaying modeline for current buffer.
|
|
|
2354 Each buffer has its own value of this variable.
|
|
|
2355 Value may be a string, a symbol or a list or cons cell.
|
|
|
2356 For a symbol, its value is used (but it is ignored if t or nil).
|
|
|
2357 A string appearing directly as the value of a symbol is processed verbatim
|
|
|
2358 in that the %-constructs below are not recognized.
|
|
|
2359 For a glyph, it is inserted as is.
|
|
|
2360 For a list whose car is a symbol, the symbol's value is taken,
|
|
|
2361 and if that is non-nil, the cadr of the list is processed recursively.
|
|
|
2362 Otherwise, the caddr of the list (if there is one) is processed.
|
|
|
2363 For a list whose car is a string or list, each element is processed
|
|
|
2364 recursively and the results are effectively concatenated.
|
|
|
2365 For a list whose car is an integer, the cdr of the list is processed
|
|
|
2366 and padded (if the number is positive) or truncated (if negative)
|
|
|
2367 to the width specified by that number.
|
|
|
2368 For a list whose car is an extent, the cdr of the list is processed
|
|
|
2369 normally but the results are displayed using the face of the
|
|
|
2370 extent, and mouse clicks over this section are processed using the
|
|
|
2371 keymap of the extent. (In addition, if the extent has a help-echo
|
|
|
2372 property, that string will be echoed when the mouse moves over this
|
|
|
2373 section.) See `generated-modeline-string' for more information.
|
|
|
2374 For a list whose car is a face, the cdr of the list is processed
|
|
|
2375 normally but the results will be displayed using the face in the car.
|
|
|
2376 For a list whose car is a keymap, the cdr of the list is processed
|
|
|
2377 normally but the keymap will apply for mouse clicks over the results,
|
|
|
2378 in addition to `modeline-map'. Nested keymap specifications are
|
|
|
2379 handled properly.
|
|
|
2380 A string is printed verbatim in the modeline except for %-constructs:
|
|
|
2381 (%-constructs are processed when the string is the entire modeline-format
|
|
|
2382 or when it is found in a cons-cell or a list)
|
|
|
2383 %b -- print buffer name. %c -- print the current column number.
|
|
|
2384 %f -- print visited file name.
|
|
|
2385 %* -- print %, * or hyphen. %+ -- print *, % or hyphen.
|
|
|
2386 % means buffer is read-only and * means it is modified.
|
|
|
2387 For a modified read-only buffer, %* gives % and %+ gives *.
|
|
|
2388 %s -- print process status. %l -- print the current line number.
|
|
|
2389 %S -- print name of selected frame (only meaningful under X Windows).
|
|
|
2390 %p -- print percent of buffer above top of window, or Top, Bot or All.
|
|
|
2391 %P -- print percent of buffer above bottom of window, perhaps plus Top,
|
|
|
2392 or print Bottom or All.
|
|
|
2393 %n -- print Narrow if appropriate.
|
|
|
2394 %t -- Under MS-DOS, print T if files is text, B if binary.
|
|
|
2395 %[ -- print one [ for each recursive editing level. %] similar.
|
|
|
2396 %% -- print %. %- -- print infinitely many dashes.
|
|
14
|
2397 Decimal digits after the % specify field width to which to pad.
|
|
|
2398 */ );
|
|
0
|
2399
|
|
|
2400 DEFVAR_BUFFER_DEFAULTS ("default-major-mode", major_mode /*
|
|
|
2401 *Major mode for new buffers. Defaults to `fundamental-mode'.
|
|
|
2402 nil here means use current buffer's major mode.
|
|
|
2403 */ );
|
|
|
2404
|
|
|
2405 DEFVAR_BUFFER_DEFAULTS ("fundamental-mode-abbrev-table", abbrev_table /*
|
|
|
2406 The abbrev table of mode-specific abbrevs for Fundamental Mode.
|
|
|
2407 */ );
|
|
|
2408
|
|
|
2409 DEFVAR_BUFFER_LOCAL ("major-mode", major_mode /*
|
|
|
2410 Symbol for current buffer's major mode.
|
|
|
2411 */ );
|
|
|
2412
|
|
|
2413 DEFVAR_BUFFER_LOCAL ("mode-name", mode_name /*
|
|
|
2414 Pretty name of current buffer's major mode (a string).
|
|
|
2415 */ );
|
|
|
2416
|
|
|
2417 DEFVAR_BUFFER_LOCAL ("abbrev-mode", abbrev_mode /*
|
|
|
2418 Non-nil turns on automatic expansion of abbrevs as they are inserted.
|
|
|
2419 Automatically becomes buffer-local when set in any fashion.
|
|
|
2420 */ );
|
|
|
2421
|
|
|
2422 DEFVAR_BUFFER_LOCAL ("case-fold-search", case_fold_search /*
|
|
|
2423 *Non-nil if searches should ignore case.
|
|
|
2424 Automatically becomes buffer-local when set in any fashion.
|
|
|
2425 */ );
|
|
|
2426
|
|
|
2427 DEFVAR_BUFFER_LOCAL ("fill-column", fill_column /*
|
|
|
2428 *Column beyond which automatic line-wrapping should happen.
|
|
|
2429 Automatically becomes buffer-local when set in any fashion.
|
|
|
2430 */ );
|
|
|
2431
|
|
|
2432 DEFVAR_BUFFER_LOCAL ("left-margin", left_margin /*
|
|
|
2433 *Column for the default indent-line-function to indent to.
|
|
|
2434 Linefeed indents to this column in Fundamental mode.
|
|
|
2435 Automatically becomes buffer-local when set in any fashion.
|
|
|
2436 Do not confuse this with the specifier `left-margin-width';
|
|
|
2437 that controls the size of a margin that is displayed outside
|
|
|
2438 of the text area.
|
|
|
2439 */ );
|
|
|
2440
|
|
|
2441 DEFVAR_BUFFER_LOCAL_MAGIC ("tab-width", tab_width /*
|
|
|
2442 *Distance between tab stops (for display of tab characters), in columns.
|
|
|
2443 Automatically becomes buffer-local when set in any fashion.
|
|
|
2444 */ , redisplay_variable_changed);
|
|
|
2445
|
|
|
2446 DEFVAR_BUFFER_LOCAL_MAGIC ("ctl-arrow", ctl_arrow /*
|
|
|
2447 *Non-nil means display control chars with uparrow.
|
|
|
2448 Nil means use backslash and octal digits.
|
|
|
2449 An integer means characters >= ctl-arrow are assumed to be printable, and
|
|
|
2450 will be displayed as a single glyph.
|
|
|
2451 Any other value is the same as 160 - the code SPC with the high bit on.
|
|
|
2452
|
|
|
2453 The interpretation of this variable is likely to change in the future.
|
|
|
2454
|
|
|
2455 Automatically becomes buffer-local when set in any fashion.
|
|
|
2456 This variable does not apply to characters whose display is specified
|
|
|
2457 in the current display table (if there is one).
|
|
|
2458 */ , redisplay_variable_changed);
|
|
|
2459
|
|
|
2460 #if 0 /* #### Make this a specifier! */
|
|
|
2461 xxDEFVAR_BUFFER_LOCAL ("display-direction", display_direction /*
|
|
|
2462 *Non-nil means lines in the buffer are displayed right to left.
|
|
|
2463 Nil means left to right. (Not yet implemented.)
|
|
|
2464 */ );
|
|
|
2465 #endif
|
|
|
2466
|
|
|
2467 DEFVAR_BUFFER_LOCAL_MAGIC ("truncate-lines", truncate_lines /*
|
|
|
2468 *Non-nil means do not display continuation lines;
|
|
|
2469 give each line of text one frame line.
|
|
|
2470 Automatically becomes buffer-local when set in any fashion.
|
|
|
2471
|
|
|
2472 Note that this is overridden by the variable
|
|
|
2473 `truncate-partial-width-windows' if that variable is non-nil
|
|
|
2474 and this buffer is not full-frame width.
|
|
2
|
2475 */ , redisplay_variable_changed);
|
|
0
|
2476
|
|
|
2477 DEFVAR_BUFFER_LOCAL ("default-directory", directory /*
|
|
|
2478 Name of default directory of current buffer. Should end with slash.
|
|
|
2479 Each buffer has its own value of this variable.
|
|
|
2480 */ );
|
|
|
2481
|
|
|
2482 DEFVAR_BUFFER_LOCAL ("buffer-file-type", buffer_file_type /*
|
|
|
2483 "Non-nil if the visited file is a binary file.
|
|
|
2484 This variable is meaningful on MS-DOG and Windows NT.
|
|
|
2485 On those systems, it is automatically local in every buffer.
|
|
|
2486 On other systems, this variable is normally always nil.
|
|
|
2487 */ );
|
|
|
2488
|
|
|
2489 DEFVAR_BUFFER_LOCAL ("auto-fill-function", auto_fill_function /*
|
|
|
2490 Function called (if non-nil) to perform auto-fill.
|
|
|
2491 It is called after self-inserting a space at a column beyond `fill-column'.
|
|
|
2492 Each buffer has its own value of this variable.
|
|
|
2493 NOTE: This variable is not an ordinary hook;
|
|
|
2494 It may not be a list of functions.
|
|
|
2495 */ );
|
|
|
2496
|
|
|
2497 DEFVAR_BUFFER_LOCAL ("buffer-file-name", filename /*
|
|
|
2498 Name of file visited in current buffer, or nil if not visiting a file.
|
|
|
2499 Each buffer has its own value of this variable.
|
|
|
2500 */ );
|
|
|
2501
|
|
|
2502 #if 0 /* FSFmacs */
|
|
|
2503 /*
|
|
|
2504 Abbreviated truename of file visited in current buffer, or nil if none.
|
|
|
2505 The truename of a file is calculated by `file-truename'
|
|
|
2506 and then abbreviated with `abbreviate-file-name'.
|
|
|
2507 Each buffer has its own value of this variable.
|
|
|
2508 */
|
|
|
2509 #endif /* FSFmacs */
|
|
|
2510
|
|
|
2511 DEFVAR_BUFFER_LOCAL ("buffer-file-truename", file_truename /*
|
|
|
2512 The real name of the file visited in the current buffer,
|
|
|
2513 or nil if not visiting a file. This is the result of passing
|
|
|
2514 buffer-file-name to the `file-truename' function. Every buffer has
|
|
|
2515 its own value of this variable. This variable is automatically
|
|
|
2516 maintained by the functions that change the file name associated
|
|
|
2517 with a buffer.
|
|
|
2518 */ );
|
|
|
2519
|
|
|
2520 DEFVAR_BUFFER_LOCAL ("buffer-auto-save-file-name", auto_save_file_name /*
|
|
|
2521 Name of file for auto-saving current buffer,
|
|
|
2522 or nil if buffer should not be auto-saved.
|
|
|
2523 Each buffer has its own value of this variable.
|
|
|
2524 */ );
|
|
|
2525
|
|
|
2526 DEFVAR_BUFFER_LOCAL ("buffer-read-only", read_only /*
|
|
|
2527 Non-nil if this buffer is read-only.
|
|
|
2528 Each buffer has its own value of this variable.
|
|
|
2529 */ );
|
|
|
2530
|
|
|
2531 DEFVAR_BUFFER_LOCAL ("buffer-backed-up", backed_up /*
|
|
|
2532 Non-nil if this buffer's file has been backed up.
|
|
|
2533 Backing up is done before the first time the file is saved.
|
|
|
2534 Each buffer has its own value of this variable.
|
|
|
2535 */ );
|
|
|
2536
|
|
|
2537 DEFVAR_BUFFER_LOCAL ("buffer-saved-size", save_length /*
|
|
|
2538 Length of current buffer when last read in, saved or auto-saved.
|
|
|
2539 0 initially.
|
|
|
2540 Each buffer has its own value of this variable.
|
|
|
2541 */ );
|
|
|
2542
|
|
|
2543 DEFVAR_BUFFER_LOCAL_MAGIC ("selective-display", selective_display /*
|
|
|
2544 Non-nil enables selective display:
|
|
|
2545 Integer N as value means display only lines
|
|
|
2546 that start with less than n columns of space.
|
|
|
2547 A value of t means, after a ^M, all the rest of the line is invisible.
|
|
|
2548 Then ^M's in the file are written into files as newlines.
|
|
|
2549
|
|
|
2550 Automatically becomes buffer-local when set in any fashion.
|
|
|
2551 */, redisplay_variable_changed);
|
|
|
2552
|
|
|
2553 #ifndef old
|
|
|
2554 DEFVAR_BUFFER_LOCAL_MAGIC ("selective-display-ellipses",
|
|
|
2555 selective_display_ellipses /*
|
|
|
2556 t means display ... on previous line when a line is invisible.
|
|
|
2557 Automatically becomes buffer-local when set in any fashion.
|
|
|
2558 */, redisplay_variable_changed);
|
|
|
2559 #endif
|
|
|
2560
|
|
|
2561 DEFVAR_BUFFER_LOCAL ("local-abbrev-table", abbrev_table /*
|
|
|
2562 Local (mode-specific) abbrev table of current buffer.
|
|
|
2563 */ );
|
|
|
2564
|
|
|
2565 DEFVAR_BUFFER_LOCAL ("overwrite-mode", overwrite_mode /*
|
|
|
2566 Non-nil if self-insertion should replace existing text.
|
|
|
2567 The value should be one of `overwrite-mode-textual',
|
|
|
2568 `overwrite-mode-binary', or nil.
|
|
|
2569 If it is `overwrite-mode-textual', self-insertion still
|
|
|
2570 inserts at the end of a line, and inserts when point is before a tab,
|
|
|
2571 until the tab is filled in.
|
|
|
2572 If `overwrite-mode-binary', self-insertion replaces newlines and tabs too.
|
|
|
2573 Automatically becomes buffer-local when set in any fashion.
|
|
|
2574 */ );
|
|
|
2575
|
|
|
2576 #if 0 /* FSFmacs */
|
|
|
2577 /* Adds the following to the doc string for buffer-undo-list:
|
|
|
2578
|
|
|
2579 An entry (nil PROPERTY VALUE BEG . END) indicates that a text property
|
|
|
2580 was modified between BEG and END. PROPERTY is the property name,
|
|
|
2581 and VALUE is the old value.
|
|
|
2582 */
|
|
|
2583 #endif
|
|
|
2584
|
|
|
2585 DEFVAR_BUFFER_LOCAL ("buffer-undo-list", undo_list /*
|
|
|
2586 List of undo entries in current buffer.
|
|
|
2587 Recent changes come first; older changes follow newer.
|
|
|
2588
|
|
|
2589 An entry (BEG . END) represents an insertion which begins at
|
|
|
2590 position BEG and ends at position END.
|
|
|
2591
|
|
|
2592 An entry (TEXT . POSITION) represents the deletion of the string TEXT
|
|
|
2593 from (abs POSITION). If POSITION is positive, point was at the front
|
|
|
2594 of the text being deleted; if negative, point was at the end.
|
|
|
2595
|
|
|
2596 An entry (t HIGH . LOW) indicates that the buffer previously had
|
|
|
2597 \"unmodified\" status. HIGH and LOW are the high and low 16-bit portions
|
|
|
2598 of the visited file's modification time, as of that time. If the
|
|
|
2599 modification time of the most recent save is different, this entry is
|
|
|
2600 obsolete.
|
|
|
2601
|
|
|
2602 An entry of the form EXTENT indicates that EXTENT was attached in
|
|
|
2603 the buffer. Undoing an entry of this form detaches EXTENT.
|
|
|
2604
|
|
|
2605 An entry of the form (EXTENT START END) indicates that EXTENT was
|
|
|
2606 detached from the buffer. Undoing an entry of this form attaches
|
|
|
2607 EXTENT from START to END.
|
|
|
2608
|
|
|
2609 An entry of the form POSITION indicates that point was at the buffer
|
|
|
2610 location given by the integer. Undoing an entry of this form places
|
|
|
2611 point at POSITION.
|
|
|
2612
|
|
|
2613 nil marks undo boundaries. The undo command treats the changes
|
|
|
2614 between two undo boundaries as a single step to be undone.
|
|
|
2615
|
|
|
2616 If the value of the variable is t, undo information is not recorded.
|
|
|
2617 */ );
|
|
|
2618
|
|
|
2619 #if 0 /* FSFmacs */
|
|
|
2620 xxDEFVAR_BUFFER_LOCAL ("mark-active", mark_active /*
|
|
|
2621 Non-nil means the mark and region are currently active in this buffer.
|
|
|
2622 Automatically local in all buffers.
|
|
|
2623 */ );
|
|
|
2624 #endif
|
|
|
2625
|
|
|
2626 #ifdef REGION_CACHE_NEEDS_WORK
|
|
|
2627 xxDEFVAR_BUFFER_LOCAL ("cache-long-line-scans", cache_long_line_scans /*
|
|
|
2628 Non-nil means that Emacs should use caches to handle long lines more quickly.
|
|
|
2629 This variable is buffer-local, in all buffers.
|
|
|
2630
|
|
|
2631 Normally, the line-motion functions work by scanning the buffer for
|
|
|
2632 newlines. Columnar operations (like move-to-column and
|
|
|
2633 compute-motion) also work by scanning the buffer, summing character
|
|
|
2634 widths as they go. This works well for ordinary text, but if the
|
|
|
2635 buffer's lines are very long (say, more than 500 characters), these
|
|
|
2636 motion functions will take longer to execute. Emacs may also take
|
|
|
2637 longer to update the display.
|
|
|
2638
|
|
|
2639 If cache-long-line-scans is non-nil, these motion functions cache the
|
|
|
2640 results of their scans, and consult the cache to avoid rescanning
|
|
|
2641 regions of the buffer until the text is modified. The caches are most
|
|
|
2642 beneficial when they prevent the most searching---that is, when the
|
|
|
2643 buffer contains long lines and large regions of characters with the
|
|
|
2644 same, fixed screen width.
|
|
|
2645
|
|
|
2646 When cache-long-line-scans is non-nil, processing short lines will
|
|
|
2647 become slightly slower (because of the overhead of consulting the
|
|
|
2648 cache), and the caches will use memory roughly proportional to the
|
|
|
2649 number of newlines and characters whose screen width varies.
|
|
|
2650
|
|
|
2651 The caches require no explicit maintenance; their accuracy is
|
|
|
2652 maintained internally by the Emacs primitives. Enabling or disabling
|
|
|
2653 the cache should not affect the behavior of any of the motion
|
|
|
2654 functions; it should only affect their performance.
|
|
|
2655 */ );
|
|
|
2656 #endif /* REGION_CACHE_NEEDS_WORK */
|
|
|
2657
|
|
|
2658 DEFVAR_BUFFER_LOCAL ("point-before-scroll", point_before_scroll /*
|
|
|
2659 Value of point before the last series of scroll operations, or nil.
|
|
|
2660 */ );
|
|
|
2661
|
|
|
2662 DEFVAR_BUFFER_LOCAL ("buffer-file-format", file_format /*
|
|
|
2663 List of formats to use when saving this buffer.
|
|
|
2664 Formats are defined by `format-alist'. This variable is
|
|
|
2665 set when a file is visited. Automatically local in all buffers.
|
|
|
2666 */ );
|
|
|
2667
|
|
|
2668 DEFVAR_BUFFER_LOCAL_MAGIC ("buffer-invisibility-spec", invisibility_spec /*
|
|
|
2669 Invisibility spec of this buffer.
|
|
|
2670 The default is t, which means that text is invisible
|
|
|
2671 if it has (or is covered by an extent with) a non-nil `invisible' property.
|
|
|
2672 If the value is a list, a text character is invisible if its `invisible'
|
|
|
2673 property is an element in that list.
|
|
|
2674 If an element is a cons cell of the form (PROP . ELLIPSIS),
|
|
|
2675 then characters with property value PROP are invisible,
|
|
|
2676 and they have an ellipsis as well if ELLIPSIS is non-nil.
|
|
|
2677 Note that the actual characters used for the ellipsis are controllable
|
|
|
2678 using `invisible-text-glyph', and default to \"...\".
|
|
|
2679 */, redisplay_variable_changed);
|
|
|
2680
|
|
|
2681 DEFVAR_CONST_BUFFER_LOCAL ("generated-modeline-string",
|
|
|
2682 generated_modeline_string /*
|
|
|
2683 String of characters in this buffer's modeline as of the last redisplay.
|
|
|
2684 Each time the modeline is recomputed, the resulting characters are
|
|
|
2685 stored in this string, which is resized as necessary. You may not
|
|
|
2686 set this variable, and modifying this string will not change the
|
|
|
2687 modeline; you have to change `modeline-format' if you want that.
|
|
|
2688
|
|
|
2689 For each extent in `modeline-format' that is encountered when
|
|
|
2690 processing the modeline, a corresponding extent is placed in
|
|
|
2691 `generated-modeline-string' and covers the text over which the
|
|
|
2692 extent in `modeline-format' applies. The extent in
|
|
|
2693 `generated-modeline-string' is made a child of the extent in
|
|
|
2694 `modeline-format', which means that it inherits all properties from
|
|
|
2695 that extent. Note that the extents in `generated-modeline-string'
|
|
|
2696 are managed automatically. You should not explicitly put any extents
|
|
|
2697 in `generated-modeline-string'; if you do, they will disappear the
|
|
|
2698 next time the modeline is processed.
|
|
|
2699
|
|
|
2700 For extents in `modeline-format', the following properties are currently
|
|
|
2701 handled:
|
|
|
2702
|
|
|
2703 `face'
|
|
|
2704 Affects the face of the modeline text. Currently, faces do
|
|
|
2705 not merge properly; only the most recently encountered face
|
|
|
2706 is used. This is a bug.
|
|
|
2707
|
|
|
2708 `keymap'
|
|
|
2709 Affects the disposition of button events over the modeline
|
|
|
2710 text. Multiple applicable keymaps *are* handled properly,
|
|
|
2711 and `modeline-map' still applies to any events that don't
|
|
|
2712 have bindings in extent-specific keymaps.
|
|
|
2713
|
|
|
2714 `help-echo'
|
|
|
2715 If a string, causes the string to be displayed when the mouse
|
|
|
2716 moves over the text.
|
|
|
2717 */ );
|
|
|
2718
|
|
|
2719 /* Check for DEFVAR_BUFFER_LOCAL without initializing the corresponding
|
|
|
2720 slot of buffer_local_flags and vice-versa. Must be done after all
|
|
|
2721 DEFVAR_BUFFER_LOCAL() calls. */
|
|
|
2722 #define MARKED_SLOT(slot) \
|
|
|
2723 if ((XINT (buffer_local_flags.slot) != -2 && \
|
|
|
2724 XINT (buffer_local_flags.slot) != -3) \
|
|
|
2725 != !(NILP (XBUFFER (Vbuffer_local_symbols)->slot))) \
|
|
|
2726 abort ()
|
|
|
2727 #include "bufslots.h"
|
|
|
2728 #undef MARKED_SLOT
|
|
|
2729
|
|
|
2730 Vprin1_to_string_buffer
|
|
|
2731 = Fget_buffer_create (Fpurecopy (build_string (" prin1")));
|
|
|
2732 /* Reset Vbuffer_alist again so that the above buf is magically
|
|
|
2733 invisible */
|
|
|
2734 Vbuffer_alist = Qnil;
|
|
|
2735 /* Want no undo records for prin1_to_string_buffer */
|
|
|
2736 Fbuffer_disable_undo (Vprin1_to_string_buffer);
|
|
|
2737
|
|
|
2738 {
|
|
|
2739 Lisp_Object scratch =
|
|
|
2740 Fset_buffer (Fget_buffer_create (QSscratch));
|
|
|
2741 /* Want no undo records for *scratch* until after Emacs is dumped */
|
|
|
2742 Fbuffer_disable_undo (scratch);
|
|
|
2743 }
|
|
|
2744 }
|
|
|
2745
|
|
|
2746 void
|
|
|
2747 init_buffer (void)
|
|
|
2748 {
|
|
|
2749 /* This function can GC */
|
|
|
2750 char buf[MAXPATHLEN+1];
|
|
|
2751 char *pwd;
|
|
|
2752 struct stat dotstat, pwdstat;
|
|
|
2753 int rc;
|
|
|
2754
|
|
|
2755 buf[0] = 0;
|
|
|
2756
|
|
|
2757 Fset_buffer (Fget_buffer_create (QSscratch));
|
|
|
2758
|
|
|
2759 /* If PWD is accurate, use it instead of calling getwd. This is faster
|
|
|
2760 when PWD is right, and may avoid a fatal error. */
|
|
|
2761 if ((pwd = getenv ("PWD")) != 0 && IS_DIRECTORY_SEP (*pwd)
|
|
|
2762 && stat (pwd, &pwdstat) == 0
|
|
|
2763 && stat (".", &dotstat) == 0
|
|
|
2764 && dotstat.st_ino == pwdstat.st_ino
|
|
|
2765 && dotstat.st_dev == pwdstat.st_dev
|
|
|
2766 && (int) strlen (pwd) < MAXPATHLEN)
|
|
|
2767 strcpy (buf, pwd);
|
|
|
2768 else if (getwd (buf) == 0)
|
|
2
|
2769 fatal ("`getwd' failed: errno %d\n", errno);
|
|
0
|
2770
|
|
|
2771 #ifndef VMS
|
|
|
2772 /* Maybe this should really use some standard subroutine
|
|
|
2773 whose definition is filename syntax dependent. */
|
|
|
2774 rc = strlen (buf);
|
|
|
2775 if (!(IS_DIRECTORY_SEP (buf[rc - 1])))
|
|
|
2776 {
|
|
|
2777 buf[rc] = DIRECTORY_SEP;
|
|
|
2778 buf[rc + 1] = '\0';
|
|
|
2779 }
|
|
|
2780 #endif /* not VMS */
|
|
|
2781 current_buffer->directory = build_string (buf);
|
|
|
2782
|
|
|
2783 #if 0 /* FSFmacs */
|
|
|
2784 /* #### is this correct? */
|
|
|
2785 temp = get_minibuffer (0);
|
|
|
2786 XBUFFER (temp)->directory = current_buffer->directory;
|
|
|
2787 #endif
|
|
|
2788 }
|
