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428
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1 ;;; files.el --- file input and output commands for XEmacs.
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2
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3 ;; Copyright (C) 1985-1987, 1992-1995, 1997 Free Software Foundation, Inc.
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4 ;; Copyright (C) 1995 Sun Microsystems.
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1333
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5 ;; Copyright (C) 2001, 2002, 2003 Ben Wing.
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428
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6
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7 ;; Maintainer: XEmacs Development Team
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8 ;; Keywords: extensions, dumped
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9
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10 ;; This file is part of XEmacs.
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11
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12 ;; XEmacs is free software; you can redistribute it and/or modify it
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13 ;; under the terms of the GNU General Public License as published by
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14 ;; the Free Software Foundation; either version 2, or (at your option)
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15 ;; any later version.
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16
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17 ;; XEmacs is distributed in the hope that it will be useful, but
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18 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 ;; General Public License for more details.
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21
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22 ;; You should have received a copy of the GNU General Public License
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23 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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24 ;; Software Foundation, Inc. 59 Temple Place - Suite 330, Boston, MA
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25 ;; 02111-1307, USA.
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26
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1333
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27 ;;; [[ Synched up with: FSF 20.3 (but diverging)
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28 ;;; Warning: Merging this file is tough. Beware.]]
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29
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30 ;;; Beware of sync messages with 20.x or 21.x! (Unless I did them, of
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31 ;;; course ... :-) Those who did these synchronizations did not do proper
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32 ;;; jobs and often left out lots of changes. In practice you need to do a
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33 ;;; line-by-line comparison, and whenever encountering differences, see
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34 ;;; what FSF 19.34 looks like to see if the changes are intentional or just
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35 ;;; regressions. In at least one case below, our code was unchanged from
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36 ;;; FSF 19.30! --ben
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37
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38 ;;; Mostly synched to FSF 21.2 by Ben Wing using a line-by-line comparison,
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39 ;;; except some really hard parts that have changed almost completely.
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428
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40
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41 ;;; Commentary:
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42
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43 ;; This file is dumped with XEmacs.
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44
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1333
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45 ;; BEGIN SYNC WITH FSF 21.2.
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46
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428
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47 ;; Defines most of XEmacs's file- and directory-handling functions,
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48 ;; including basic file visiting, backup generation, link handling,
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49 ;; ITS-id version control, load- and write-hook handling, and the like.
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50
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51 ;;; Code:
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52
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53 ;; XEmacs: Avoid compilation warnings.
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54 (defvar coding-system-for-read)
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55 (defvar buffer-file-coding-system)
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56
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57 (defgroup files nil
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58 "Support editing files."
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59 :group 'emacs)
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60
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61 (defgroup backup nil
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62 "Backups of edited data files."
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63 :group 'files)
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64
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65 (defgroup find-file nil
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66 "Finding and editing files."
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67 :group 'files)
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68
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1333
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69 ;; XEmacs: In buffer.c (also)
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70 (defcustom delete-auto-save-files t
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71 "*Non-nil means delete auto-save file when a buffer is saved or killed.
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72
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73 Note that auto-save file will not be deleted if the buffer is killed
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74 when it has unsaved changes."
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75 :type 'boolean
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76 :group 'auto-save)
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428
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77
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78 ;; FSF has automount-dir-prefix. Our directory-abbrev-alist is more general.
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79 ;; note: tmp_mnt bogosity conversion is established in paths.el.
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80 (defcustom directory-abbrev-alist nil
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81 "*Alist of abbreviations for file directories.
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82 A list of elements of the form (FROM . TO), each meaning to replace
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83 FROM with TO when it appears in a directory name.
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84 This replacement is done when setting up the default directory of a
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85 newly visited file. *Every* FROM string should start with \\\\` or ^.
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86
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1333
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87 Do not use `~' in the TO strings.
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88 They should be ordinary absolute directory names.
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89
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428
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90 Use this feature when you have directories which you normally refer to
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91 via absolute symbolic links or to eliminate automounter mount points
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92 from the beginning of your filenames. Make TO the name of the link,
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93 and FROM the name it is linked to."
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94 :type '(repeat (cons :format "%v"
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95 :value ("\\`" . "")
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96 (regexp :tag "From")
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97 (regexp :tag "To")))
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98 :group 'find-file)
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99
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100 (defcustom make-backup-files t
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101 "*Non-nil means make a backup of a file the first time it is saved.
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102 This can be done by renaming the file or by copying.
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103
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104 Renaming means that XEmacs renames the existing file so that it is a
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105 backup file, then writes the buffer into a new file. Any other names
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106 that the old file had will now refer to the backup file. The new file
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107 is owned by you and its group is defaulted.
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108
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109 Copying means that XEmacs copies the existing file into the backup
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110 file, then writes the buffer on top of the existing file. Any other
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111 names that the old file had will now refer to the new (edited) file.
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112 The file's owner and group are unchanged.
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113
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114 The choice of renaming or copying is controlled by the variables
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115 `backup-by-copying', `backup-by-copying-when-linked' and
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116 `backup-by-copying-when-mismatch' and
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117 `backup-by-copying-when-privileged-mismatch'. See also `backup-inhibited'."
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428
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118 :type 'boolean
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119 :group 'backup)
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120
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121 ;; Do this so that local variables based on the file name
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122 ;; are not overridden by the major mode.
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123 (defvar backup-inhibited nil
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124 "Non-nil means don't make a backup, regardless of the other parameters.
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125 This variable is intended for use by making it local to a buffer.
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126 But it is local only if you make it local.")
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127 (put 'backup-inhibited 'permanent-local t)
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128
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129 (defcustom backup-by-copying nil
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130 "*Non-nil means always use copying to create backup files.
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131 See documentation of variable `make-backup-files'."
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132 :type 'boolean
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133 :group 'backup)
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134
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135 (defcustom backup-by-copying-when-linked nil
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136 "*Non-nil means use copying to create backups for files with multiple names.
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137 This causes the alternate names to refer to the latest version as edited.
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138 This variable is relevant only if `backup-by-copying' is nil."
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139 :type 'boolean
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140 :group 'backup)
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141
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142 (defcustom backup-by-copying-when-mismatch nil
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143 "*Non-nil means create backups by copying if this preserves owner or group.
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144 Renaming may still be used (subject to control of other variables)
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145 when it would not result in changing the owner or group of the file;
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146 that is, for files which are owned by you and whose group matches
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147 the default for a new file created there by you.
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148 This variable is relevant only if `backup-by-copying' is nil."
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149 :type 'boolean
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150 :group 'backup)
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151
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1333
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152 (defcustom backup-by-copying-when-privileged-mismatch 200
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153 "*Non-nil means create backups by copying to preserve a privileged owner.
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154 Renaming may still be used (subject to control of other variables)
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155 when it would not result in changing the owner of the file or if the owner
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156 has a user id greater than the value of this variable. This is useful
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157 when low-numbered uid's are used for special system users (such as root)
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158 that must maintain ownership of certain files.
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159 This variable is relevant only if `backup-by-copying' and
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160 `backup-by-copying-when-mismatch' are nil."
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161 :type '(choice (const nil) integer)
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162 :group 'backup)
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163
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164 (defun normal-backup-enable-predicate (name)
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165 "Default `backup-enable-predicate' function.
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166 Checks for files in `temporary-file-directory' or
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167 `small-temporary-file-directory'."
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168 (let ((temporary-file-directory (temp-directory)))
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169 (not (or (let ((comp (compare-strings temporary-file-directory 0 nil
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170 name 0 nil)))
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171 ;; Directory is under temporary-file-directory.
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172 (and (not (eq comp t))
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173 (< comp (- (length temporary-file-directory)))))
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174 (if small-temporary-file-directory
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175 (let ((comp (compare-strings small-temporary-file-directory
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176 0 nil
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177 name 0 nil)))
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178 ;; Directory is under small-temporary-file-directory.
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179 (and (not (eq comp t))
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180 (< comp (- (length small-temporary-file-directory))))))))))
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181
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182 (defvar backup-enable-predicate 'normal-backup-enable-predicate
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428
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183 "Predicate that looks at a file name and decides whether to make backups.
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184 Called with an absolute file name as argument, it returns t to enable backup.")
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185
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186 (defcustom buffer-offer-save nil
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1333
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187 "*Non-nil in a buffer means always offer to save buffer on exit.
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188 Do so even if the buffer is not visiting a file.
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428
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189 Automatically local in all buffers."
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190 :type 'boolean
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191 :group 'find-file)
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192 (make-variable-buffer-local 'buffer-offer-save)
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193
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194 ;; FSF uses normal defconst
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195 (defvaralias 'find-file-visit-truename 'find-file-use-truenames)
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196 (defvaralias 'find-file-existing-other-name 'find-file-compare-truenames)
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197
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198 (defcustom revert-without-query nil
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199 "*Specify which files should be reverted without query.
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200 The value is a list of regular expressions.
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201 If the file name matches one of these regular expressions,
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202 then `revert-buffer' reverts the file without querying
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203 if the file has changed on disk and you have not edited the buffer."
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204 :type '(repeat (regexp ""))
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205 :group 'find-file)
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206
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207 (defvar buffer-file-number nil
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208 "The device number and file number of the file visited in the current buffer.
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209 The value is a list of the form (FILENUM DEVNUM).
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210 This pair of numbers uniquely identifies the file.
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211 If the buffer is visiting a new file, the value is nil.")
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212 (make-variable-buffer-local 'buffer-file-number)
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213 (put 'buffer-file-number 'permanent-local t)
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214
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215 (defvar buffer-file-numbers-unique (not (memq system-type '(windows-nt)))
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216 "Non-nil means that buffer-file-number uniquely identifies files.")
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217
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1333
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218 ;; FSF 21.2. We use (temp-directory).
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219 ; (defvar temporary-file-directory
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220 ; (file-name-as-directory
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221 ; (cond ((memq system-type '(ms-dos windows-nt))
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222 ; (or (getenv "TEMP") (getenv "TMPDIR") (getenv "TMP") "c:/temp"))
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223 ; ((memq system-type '(vax-vms axp-vms))
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224 ; (or (getenv "TMPDIR") (getenv "TMP") (getenv "TEMP") "SYS$SCRATCH:"))
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225 ; (t
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226 ; (or (getenv "TMPDIR") (getenv "TMP") (getenv "TEMP") "/tmp"))))
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227 ; "The directory for writing temporary files.")
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228
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229 (defvar small-temporary-file-directory
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230 (if (eq system-type 'ms-dos) (getenv "TMPDIR"))
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231 "The directory for writing small temporary files.
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232 If non-nil, this directory is used instead of `temporary-file-directory'
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233 by programs that create small temporary files. This is for systems that
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234 have fast storage with limited space, such as a RAM disk.")
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235
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236 ;; The system null device. (Should reference NULL_DEVICE from C.)
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237 (defvar null-device "/dev/null" "The system null device.")
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238
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239 ; (defvar file-name-invalid-regexp
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240 ; (cond ((and (eq system-type 'ms-dos) (not (msdos-long-file-names)))
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241 ; (concat "^\\([^A-Z[-`a-z]\\|..+\\)?:\\|" ; colon except after drive
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242 ; "[+, ;=|<>\"?*]\\|\\[\\|\\]\\|" ; invalid characters
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243 ; "[\000-\031]\\|" ; control characters
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244 ; "\\(/\\.\\.?[^/]\\)\\|" ; leading dots
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245 ; "\\(/[^/.]+\\.[^/.]*\\.\\)")) ; more than a single dot
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246 ; ((memq system-type '(ms-dos windows-nt))
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247 ; (concat "^\\([^A-Z[-`a-z]\\|..+\\)?:\\|" ; colon except after drive
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248 ; "[|<>\"?*\000-\031]")) ; invalid characters
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249 ; (t "[\000]"))
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250 ; "Regexp recognizing file names which aren't allowed by the filesystem.")
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251
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428
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252 (defcustom file-precious-flag nil
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253 "*Non-nil means protect against I/O errors while saving files.
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254 Some modes set this non-nil in particular buffers.
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255
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256 This feature works by writing the new contents into a temporary file
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257 and then renaming the temporary file to replace the original.
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258 In this way, any I/O error in writing leaves the original untouched,
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259 and there is never any instant where the file is nonexistent.
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260
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261 Note that this feature forces backups to be made by copying.
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262 Yet, at the same time, saving a precious file
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263 breaks any hard links between it and other files."
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264 :type 'boolean
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265 :group 'backup)
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266
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267 (defcustom version-control nil
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268 "*Control use of version numbers for backup files.
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269 t means make numeric backup versions unconditionally.
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270 nil means make them for files that have some already.
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271 `never' means do not make them."
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1333
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272 :type '(choice (const :tag "Never" never)
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273 (const :tag "If existing" nil)
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274 (other :tag "Always" t))
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428
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275 :group 'backup
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276 :group 'vc)
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277
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278 ;; This is now defined in efs.
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1333
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279 ; (defcustom dired-kept-versions 2
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280 ; "*When cleaning directory, number of versions to keep."
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281 ; :type 'integer
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282 ; :group 'backup
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283 ; :group 'dired)
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428
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284
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285 (defcustom delete-old-versions nil
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286 "*If t, delete excess backup versions silently.
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287 If nil, ask confirmation. Any other value prevents any trimming."
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288 :type '(choice (const :tag "Delete" t)
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289 (const :tag "Ask" nil)
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290 (sexp :tag "Leave" :format "%t\n" other))
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291 :group 'backup)
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292
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293 (defcustom kept-old-versions 2
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294 "*Number of oldest versions to keep when a new numbered backup is made."
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295 :type 'integer
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296 :group 'backup)
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297
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298 (defcustom kept-new-versions 2
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299 "*Number of newest versions to keep when a new numbered backup is made.
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300 Includes the new backup. Must be > 0"
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301 :type 'integer
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302 :group 'backup)
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303
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304 (defcustom require-final-newline nil
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305 "*Value of t says silently ensure a file ends in a newline when it is saved.
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306 Non-nil but not t says ask user whether to add a newline when there isn't one.
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307 nil means don't add newlines."
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308 :type '(choice (const :tag "Off" nil)
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309 (const :tag "Add" t)
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310 (sexp :tag "Ask" :format "%t\n" ask))
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311 :group 'editing-basics)
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312
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313 (defcustom auto-save-default t
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314 "*Non-nil says by default do auto-saving of every file-visiting buffer."
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315 :type 'boolean
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316 :group 'auto-save)
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317
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318 (defcustom auto-save-visited-file-name nil
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319 "*Non-nil says auto-save a buffer in the file it is visiting, when practical.
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320 Normally auto-save files are written under other names."
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321 :type 'boolean
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322 :group 'auto-save)
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323
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1333
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324 (defcustom auto-save-file-name-transforms
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325 `(("\\`/[^/]*:\\(.+/\\)*\\(.*\\)"
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326 ,(expand-file-name "\\2" (temp-directory))))
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327 "*Transforms to apply to buffer file name before making auto-save file name.
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328 Each transform is a list (REGEXP REPLACEMENT):
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329 REGEXP is a regular expression to match against the file name.
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330 If it matches, `replace-match' is used to replace the
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331 matching part with REPLACEMENT.
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332 All the transforms in the list are tried, in the order they are listed.
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333 When one transform applies, its result is final;
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334 no further transforms are tried.
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335
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336 The default value is set up to put the auto-save file into the
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337 temporary directory (see the variable `temporary-file-directory') for
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338 editing a remote file."
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339 :group 'auto-save
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340 :type '(repeat (list (string :tag "Regexp") (string :tag "Replacement")))
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341 ;:version "21.1"
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342 )
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343
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428
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344 (defcustom save-abbrevs nil
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1333
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345 "*Non-nil means save word abbrevs too when files are saved.
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346 If `silently', don't ask the user before saving.
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1337
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347 Loading an abbrev file sets this to t."
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1333
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348 :type '(choice (const t) (const nil) (const silently))
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1337
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349 :group 'abbrev)
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350
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428
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351 (defcustom find-file-run-dired t
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1333
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352 "*Non-nil means allow `find-file' to visit directories.
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353 To visit the directory, `find-file' runs `find-directory-functions'."
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354 :type 'boolean
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355 :group 'find-file)
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356
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357 (defcustom find-directory-functions '(cvs-dired-noselect dired-noselect)
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358 "*List of functions to try in sequence to visit a directory.
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359 Each function is called with the directory name as the sole argument
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360 and should return either a buffer or nil."
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361 :type '(hook :options (cvs-dired-noselect dired-noselect))
|
|
428
|
362 :group 'find-file)
|
|
|
363
|
|
|
364 ;;;It is not useful to make this a local variable.
|
|
|
365 ;;;(put 'find-file-not-found-hooks 'permanent-local t)
|
|
|
366 (defvar find-file-not-found-hooks nil
|
|
|
367 "List of functions to be called for `find-file' on nonexistent file.
|
|
|
368 These functions are called as soon as the error is detected.
|
|
1333
|
369 Variable `buffer-file-name' is already set up.
|
|
428
|
370 The functions are called in the order given until one of them returns non-nil.")
|
|
|
371
|
|
|
372 ;;;It is not useful to make this a local variable.
|
|
|
373 ;;;(put 'find-file-hooks 'permanent-local t)
|
|
|
374 (defvar find-file-hooks nil
|
|
|
375 "List of functions to be called after a buffer is loaded from a file.
|
|
|
376 The buffer's local variables (if any) will have been processed before the
|
|
|
377 functions are called.")
|
|
|
378
|
|
|
379 (defvar write-file-hooks nil
|
|
|
380 "List of functions to be called before writing out a buffer to a file.
|
|
|
381 If one of them returns non-nil, the file is considered already written
|
|
|
382 and the rest are not called.
|
|
|
383 These hooks are considered to pertain to the visited file.
|
|
1333
|
384 So any buffer-local binding of `write-file-hooks' is
|
|
|
385 discarded if you change the visited file name with \\[set-visited-file-name].
|
|
|
386
|
|
|
387 Don't make this variable buffer-local; instead, use `local-write-file-hooks'.
|
|
428
|
388 See also `write-contents-hooks' and `continue-save-buffer'.")
|
|
|
389 ;;; However, in case someone does make it local...
|
|
|
390 (put 'write-file-hooks 'permanent-local t)
|
|
|
391
|
|
|
392 (defvar local-write-file-hooks nil
|
|
|
393 "Just like `write-file-hooks', except intended for per-buffer use.
|
|
|
394 The functions in this list are called before the ones in
|
|
|
395 `write-file-hooks'.
|
|
|
396
|
|
|
397 This variable is meant to be used for hooks that have to do with a
|
|
|
398 particular visited file. Therefore, it is a permanent local, so that
|
|
|
399 changing the major mode does not clear it. However, calling
|
|
|
400 `set-visited-file-name' does clear it.")
|
|
|
401 (make-variable-buffer-local 'local-write-file-hooks)
|
|
|
402 (put 'local-write-file-hooks 'permanent-local t)
|
|
|
403
|
|
|
404
|
|
|
405 ;; #### think about this (added by Sun).
|
|
|
406 (put 'after-set-visited-file-name-hooks 'permanent-local t)
|
|
|
407 (defvar after-set-visited-file-name-hooks nil
|
|
|
408 "List of functions to be called after \\[set-visited-file-name]
|
|
|
409 or during \\[write-file].
|
|
444
|
410 You can use this hook to restore local values of `write-file-hooks',
|
|
|
411 `after-save-hook', and `revert-buffer-function', which pertain
|
|
428
|
412 to a specific file and therefore are normally killed by a rename.
|
|
444
|
413 Put hooks pertaining to the buffer contents on `write-contents-hooks'
|
|
|
414 and `revert-buffer-insert-file-contents-function'.")
|
|
428
|
415
|
|
|
416 (defvar write-contents-hooks nil
|
|
|
417 "List of functions to be called before writing out a buffer to a file.
|
|
|
418 If one of them returns non-nil, the file is considered already written
|
|
|
419 and the rest are not called.
|
|
1333
|
420
|
|
|
421 This variable is meant to be used for hooks that pertain to the
|
|
|
422 buffer's contents, not to the particular visited file; thus,
|
|
|
423 `set-visited-file-name' does not clear this variable; but changing the
|
|
|
424 major mode does clear it.
|
|
|
425
|
|
|
426 This variable automatically becomes buffer-local whenever it is set.
|
|
|
427 If you use `add-hook' to add elements to the list, use nil for the
|
|
|
428 LOCAL argument.
|
|
|
429
|
|
428
|
430 See also `write-file-hooks' and `continue-save-buffer'.")
|
|
1333
|
431 (make-variable-buffer-local 'write-contents-hooks)
|
|
428
|
432
|
|
|
433 ;; XEmacs addition
|
|
|
434 ;; Energize needed this to hook into save-buffer at a lower level; we need
|
|
|
435 ;; to provide a new output method, but don't want to have to duplicate all
|
|
|
436 ;; of the backup file and file modes logic.that does not occur if one uses
|
|
|
437 ;; a write-file-hook which returns non-nil.
|
|
|
438 (put 'write-file-data-hooks 'permanent-local t)
|
|
|
439 (defvar write-file-data-hooks nil
|
|
|
440 "List of functions to be called to put the bytes on disk.
|
|
|
441 These functions receive the name of the file to write to as argument.
|
|
|
442 The default behavior is to call
|
|
|
443 (write-region (point-min) (point-max) filename nil t)
|
|
|
444 If one of them returns non-nil, the file is considered already written
|
|
|
445 and the rest are not called.
|
|
|
446 These hooks are considered to pertain to the visited file.
|
|
1333
|
447 So any buffer-local binding of `write-file-data-hooks' is
|
|
|
448 discarded if you change the visited file name with \\[set-visited-file-name].
|
|
428
|
449 See also `write-file-hooks'.")
|
|
|
450
|
|
|
451 (defcustom enable-local-variables t
|
|
1333
|
452 "*Control use of local variables in files you visit.
|
|
428
|
453 The value can be t, nil or something else.
|
|
1333
|
454 A value of t means file local variables specifications are obeyed;
|
|
428
|
455 nil means they are ignored; anything else means query.
|
|
1333
|
456 This variable also controls use of major modes specified in
|
|
|
457 a -*- line.
|
|
|
458
|
|
|
459 The command \\[normal-mode], when used interactively,
|
|
|
460 always obeys file local variable specifications and the -*- line,
|
|
428
|
461 and ignores this variable."
|
|
|
462 :type '(choice (const :tag "Obey" t)
|
|
|
463 (const :tag "Ignore" nil)
|
|
|
464 (sexp :tag "Query" :format "%t\n" other))
|
|
|
465 :group 'find-file)
|
|
|
466
|
|
1333
|
467 ; (defvar local-enable-local-variables t
|
|
|
468 ; "Like `enable-local-variables' but meant for buffer-local bindings.
|
|
|
469 ; The meaningful values are nil and non-nil. The default is non-nil.
|
|
|
470 ; If a major mode sets this to nil, buffer-locally, then any local
|
|
|
471 ; variables list in the file will be ignored.
|
|
|
472
|
|
|
473 ; This variable does not affect the use of major modes
|
|
|
474 ; specified in a -*- line.")
|
|
|
475
|
|
428
|
476 (defcustom enable-local-eval 'maybe
|
|
|
477 "*Control processing of the \"variable\" `eval' in a file's local variables.
|
|
|
478 The value can be t, nil or something else.
|
|
|
479 A value of t means obey `eval' variables;
|
|
|
480 nil means ignore them; anything else means query.
|
|
|
481
|
|
|
482 The command \\[normal-mode] always obeys local-variables lists
|
|
|
483 and ignores this variable."
|
|
|
484 :type '(choice (const :tag "Obey" t)
|
|
|
485 (const :tag "Ignore" nil)
|
|
|
486 (sexp :tag "Query" :format "%t\n" other))
|
|
|
487 :group 'find-file)
|
|
|
488
|
|
|
489 ;; Avoid losing in versions where CLASH_DETECTION is disabled.
|
|
|
490 (or (fboundp 'lock-buffer)
|
|
|
491 (defalias 'lock-buffer 'ignore))
|
|
|
492 (or (fboundp 'unlock-buffer)
|
|
|
493 (defalias 'unlock-buffer 'ignore))
|
|
1333
|
494 (or (fboundp 'file-locked-p)
|
|
|
495 (defalias 'file-locked-p 'ignore))
|
|
|
496
|
|
|
497 (defvar view-read-only nil
|
|
|
498 "*Non-nil means buffers visiting files read-only, do it in view mode.")
|
|
428
|
499
|
|
|
500 ;;FSFmacs bastardized ange-ftp cruft
|
|
|
501 ;(defun ange-ftp-completion-hook-function (op &rest args)
|
|
1333
|
502 ; "Provides support for ange-ftp host name completion.
|
|
|
503 ;Runs the usual ange-ftp hook, but only for completion operations."
|
|
|
504 ; ;; Having this here avoids the need to load ange-ftp when it's not
|
|
|
505 ; ;; really in use.
|
|
428
|
506 ; (if (memq op '(file-name-completion file-name-all-completions))
|
|
|
507 ; (apply 'ange-ftp-hook-function op args)
|
|
|
508 ; (let ((inhibit-file-name-handlers
|
|
|
509 ; (cons 'ange-ftp-completion-hook-function
|
|
|
510 ; (and (eq inhibit-file-name-operation op)
|
|
|
511 ; inhibit-file-name-handlers)))
|
|
|
512 ; (inhibit-file-name-operation op))
|
|
|
513 ; (apply op args))
|
|
|
514
|
|
1333
|
515 ;; FSF 21.2:
|
|
|
516 ;This function's standard definition is trivial; it just returns the argument.
|
|
|
517 ;However, on some systems, the function is redefined with a definition
|
|
|
518 ;that really does change some file names to canonicalize certain
|
|
|
519 ;patterns and to guarantee valid names."
|
|
428
|
520 (defun convert-standard-filename (filename)
|
|
464
|
521 "Convert a standard file's name to something suitable for the current OS."
|
|
|
522 (if (eq system-type 'windows-nt)
|
|
|
523 (let ((name (copy-sequence filename))
|
|
|
524 (start 0))
|
|
|
525 ;; leave ':' if part of drive specifier
|
|
819
|
526 (if (and (> (length name) 1)
|
|
|
527 (eq (aref name 1) ?:))
|
|
464
|
528 (setq start 2))
|
|
|
529 ;; destructively replace invalid filename characters with !
|
|
|
530 (while (string-match "[?*:<>|\"\000-\037]" name start)
|
|
|
531 (aset name (match-beginning 0) ?!)
|
|
|
532 (setq start (match-end 0)))
|
|
|
533 ;; FSF: [convert directory separators to Windows format ...]
|
|
|
534 ;; unneeded in XEmacs.
|
|
|
535 name)
|
|
|
536 filename))
|
|
|
537
|
|
428
|
538
|
|
|
539 (defun pwd ()
|
|
|
540 "Show the current default directory."
|
|
|
541 (interactive nil)
|
|
|
542 (message "Directory %s" default-directory))
|
|
|
543
|
|
|
544 (defvar cd-path nil
|
|
|
545 "Value of the CDPATH environment variable, as a list.
|
|
|
546 Not actually set up until the first time you use it.")
|
|
|
547
|
|
|
548 (defvar cdpath-previous nil
|
|
|
549 "Prior value of the CDPATH environment variable.")
|
|
|
550
|
|
|
551 (defun parse-colon-path (cd-path)
|
|
|
552 "Explode a colon-separated search path into a list of directory names.
|
|
|
553
|
|
|
554 If you think you want to use this, you probably don't. This function
|
|
|
555 is provided for backward compatibility. A more robust implementation
|
|
|
556 of the same functionality is available as `split-path', which see."
|
|
|
557 (and cd-path
|
|
|
558 (let (cd-list (cd-start 0) cd-colon)
|
|
|
559 (setq cd-path (concat cd-path path-separator))
|
|
|
560 (while (setq cd-colon (string-match path-separator cd-path cd-start))
|
|
|
561 (setq cd-list
|
|
|
562 (nconc cd-list
|
|
|
563 (list (if (= cd-start cd-colon)
|
|
|
564 nil
|
|
|
565 (substitute-in-file-name
|
|
|
566 (file-name-as-directory
|
|
|
567 (substring cd-path cd-start cd-colon)))))))
|
|
|
568 (setq cd-start (+ cd-colon 1)))
|
|
|
569 cd-list)))
|
|
|
570
|
|
|
571 (defun cd-absolute (dir)
|
|
|
572 "Change current directory to given absolute file name DIR."
|
|
|
573 ;; Put the name into directory syntax now,
|
|
|
574 ;; because otherwise expand-file-name may give some bad results.
|
|
|
575 (setq dir (file-name-as-directory dir))
|
|
|
576 ;; XEmacs change: stig@hackvan.com
|
|
|
577 (if find-file-use-truenames
|
|
|
578 (setq dir (file-truename dir)))
|
|
|
579 (setq dir (abbreviate-file-name (expand-file-name dir)))
|
|
|
580 (cond ((not (file-directory-p dir))
|
|
1333
|
581 (if (file-exists-p dir)
|
|
|
582 (error "%s is not a directory" dir)
|
|
|
583 (error "%s: no such directory" dir)))
|
|
428
|
584 ;; this breaks ange-ftp, which doesn't (can't?) overload `file-executable-p'.
|
|
|
585 ;;((not (file-executable-p dir))
|
|
|
586 ;; (error "Cannot cd to %s: Permission denied" dir))
|
|
|
587 (t
|
|
|
588 (setq default-directory dir))))
|
|
|
589
|
|
|
590 (defun cd (dir)
|
|
|
591 "Make DIR become the current buffer's default directory.
|
|
|
592 If your environment includes a `CDPATH' variable, try each one of that
|
|
|
593 colon-separated list of directories when resolving a relative directory name."
|
|
|
594 (interactive
|
|
|
595 ;; XEmacs change? (read-file-name => read-directory-name)
|
|
|
596 (list (read-directory-name "Change default directory: "
|
|
|
597 default-directory default-directory
|
|
|
598 (and (member cd-path '(nil ("./")))
|
|
|
599 (null (getenv "CDPATH"))))))
|
|
|
600 (if (file-name-absolute-p dir)
|
|
|
601 (cd-absolute (expand-file-name dir))
|
|
|
602 ;; XEmacs
|
|
|
603 (unless (and cd-path (equal (getenv "CDPATH") cdpath-previous))
|
|
|
604 ;;#### Unix-specific
|
|
|
605 (let ((trypath (parse-colon-path
|
|
|
606 (setq cdpath-previous (getenv "CDPATH")))))
|
|
|
607 (setq cd-path (or trypath (list "./")))))
|
|
|
608 (or (catch 'found
|
|
|
609 (mapcar #'(lambda (x)
|
|
|
610 (let ((f (expand-file-name (concat x dir))))
|
|
|
611 (if (file-directory-p f)
|
|
|
612 (progn
|
|
|
613 (cd-absolute f)
|
|
|
614 (throw 'found t)))))
|
|
|
615 cd-path)
|
|
|
616 nil)
|
|
|
617 ;; jwz: give a better error message to those of us with the
|
|
|
618 ;; good taste not to use a kludge like $CDPATH.
|
|
|
619 (if (equal cd-path '("./"))
|
|
|
620 (error "No such directory: %s" (expand-file-name dir))
|
|
|
621 (error "Directory not found in $CDPATH: %s" dir)))))
|
|
|
622
|
|
|
623 (defun load-file (file)
|
|
|
624 "Load the Lisp file named FILE."
|
|
1333
|
625 ;; This is a case where .elc makes a lot of sense.
|
|
|
626 (interactive (list (let ((completion-ignored-extensions
|
|
|
627 (remove ".elc" completion-ignored-extensions)))
|
|
|
628 (read-file-name "Load file: "))))
|
|
428
|
629 (load (expand-file-name file) nil nil t))
|
|
|
630
|
|
|
631 ; We now dump utils/lib-complete.el which has improved versions of this.
|
|
|
632 ;(defun load-library (library)
|
|
|
633 ; "Load the library named LIBRARY.
|
|
|
634 ;This is an interface to the function `load'."
|
|
|
635 ; (interactive "sLoad library: ")
|
|
|
636 ; (load library))
|
|
|
637 ;
|
|
|
638 ;(defun find-library (library)
|
|
|
639 ; "Find the library of Lisp code named LIBRARY.
|
|
|
640 ;This searches `load-path' for a file named either \"LIBRARY\" or \"LIBRARY.el\"."
|
|
|
641 ; (interactive "sFind library file: ")
|
|
|
642 ; (let ((f (locate-file library load-path ":.el:")))
|
|
|
643 ; (if f
|
|
|
644 ; (find-file f)
|
|
|
645 ; (error "Couldn't locate library %s" library))))
|
|
|
646
|
|
1333
|
647 (defun file-local-copy (file)
|
|
428
|
648 "Copy the file FILE into a temporary file on this machine.
|
|
|
649 Returns the name of the local copy, or nil, if FILE is directly
|
|
|
650 accessible."
|
|
1333
|
651 ;; This formerly had an optional BUFFER argument that wasn't used by
|
|
|
652 ;; anything.
|
|
428
|
653 (let ((handler (find-file-name-handler file 'file-local-copy)))
|
|
|
654 (if handler
|
|
|
655 (funcall handler 'file-local-copy file)
|
|
|
656 nil)))
|
|
|
657
|
|
|
658 ;; XEmacs change block
|
|
|
659 ; We have this in C and use the realpath() system call.
|
|
|
660
|
|
|
661 ;(defun file-truename (filename &optional counter prev-dirs)
|
|
|
662 ; [... lots of code snipped ...]
|
|
|
663 ; filename))
|
|
|
664
|
|
|
665 ;; XEmacs addition. Called from `insert-file-contents-internal'
|
|
|
666 ;; at the appropriate time.
|
|
|
667 (defun compute-buffer-file-truename (&optional buffer)
|
|
|
668 "Recompute BUFFER's value of `buffer-file-truename'
|
|
|
669 based on the current value of `buffer-file-name'.
|
|
|
670 BUFFER defaults to the current buffer if unspecified."
|
|
|
671 (save-excursion
|
|
|
672 (set-buffer (or buffer (current-buffer)))
|
|
|
673 (cond ((null buffer-file-name)
|
|
|
674 (setq buffer-file-truename nil))
|
|
|
675 ((setq buffer-file-truename (file-truename buffer-file-name))
|
|
|
676 ;; it exists, we're done.
|
|
|
677 nil)
|
|
|
678 (t
|
|
|
679 ;; the file doesn't exist, but maybe the directory does.
|
|
|
680 (let* ((dir (file-name-directory buffer-file-name))
|
|
|
681 (truedir (file-truename dir)))
|
|
|
682 (if truedir (setq dir truedir))
|
|
|
683 (setq buffer-file-truename
|
|
|
684 (expand-file-name (file-name-nondirectory buffer-file-name)
|
|
|
685 dir)))))
|
|
|
686 (if (and find-file-use-truenames buffer-file-truename)
|
|
|
687 (setq buffer-file-name (abbreviate-file-name buffer-file-truename)
|
|
|
688 default-directory (file-name-directory buffer-file-name)))
|
|
|
689 buffer-file-truename))
|
|
|
690 ;; End XEmacs change block
|
|
|
691
|
|
|
692 (defun file-chase-links (filename)
|
|
|
693 "Chase links in FILENAME until a name that is not a link.
|
|
|
694 Does not examine containing directories for links,
|
|
|
695 unlike `file-truename'."
|
|
|
696 (let (tem (count 100) (newname filename))
|
|
|
697 (while (setq tem (file-symlink-p newname))
|
|
|
698 (save-match-data
|
|
|
699 (if (= count 0)
|
|
|
700 (error "Apparent cycle of symbolic links for %s" filename))
|
|
|
701 ;; In the context of a link, `//' doesn't mean what XEmacs thinks.
|
|
|
702 (while (string-match "//+" tem)
|
|
1333
|
703 (setq tem (replace-match "/" nil nil tem)))
|
|
428
|
704 ;; Handle `..' by hand, since it needs to work in the
|
|
|
705 ;; target of any directory symlink.
|
|
|
706 ;; This code is not quite complete; it does not handle
|
|
|
707 ;; embedded .. in some cases such as ./../foo and foo/bar/../../../lose.
|
|
|
708 (while (string-match "\\`\\.\\./" tem) ;#### Unix specific
|
|
|
709 (setq tem (substring tem 3))
|
|
|
710 (setq newname (file-name-as-directory
|
|
|
711 ;; Do the .. by hand.
|
|
|
712 (directory-file-name
|
|
|
713 (file-name-directory
|
|
|
714 ;; Chase links in the default dir of the symlink.
|
|
|
715 (file-chase-links
|
|
|
716 (directory-file-name
|
|
|
717 (file-name-directory newname))))))))
|
|
|
718 (setq newname (expand-file-name tem (file-name-directory newname)))
|
|
|
719 (setq count (1- count))))
|
|
|
720 newname))
|
|
|
721
|
|
|
722 (defun switch-to-other-buffer (arg)
|
|
|
723 "Switch to the previous buffer. With a numeric arg, n, switch to the nth
|
|
|
724 most recent buffer. With an arg of 0, buries the current buffer at the
|
|
|
725 bottom of the buffer stack."
|
|
|
726 (interactive "p")
|
|
|
727 (if (eq arg 0)
|
|
|
728 (bury-buffer (current-buffer)))
|
|
|
729 (switch-to-buffer
|
|
|
730 (if (<= arg 1) (other-buffer (current-buffer))
|
|
|
731 (nth (1+ arg) (buffer-list)))))
|
|
|
732
|
|
1333
|
733 ;;FSF 21.2
|
|
|
734 ;Optional second arg NORECORD non-nil means
|
|
|
735 ;do not put this buffer at the front of the list of recently selected ones.
|
|
|
736 (defun switch-to-buffer-other-window (buffer) ;;FSF 21.2: &optional norecord
|
|
|
737 "Select buffer BUFFER in another window.
|
|
|
738
|
|
|
739 This uses the function `display-buffer' as a subroutine; see its
|
|
|
740 documentation for additional customization information."
|
|
|
741 (interactive "BSwitch to buffer in other window: ")
|
|
428
|
742 (let ((pop-up-windows t))
|
|
|
743 ;; XEmacs: this used to have (selected-frame) as the third argument,
|
|
|
744 ;; but this is obnoxious. If the user wants the buffer in a
|
|
|
745 ;; different frame, then it should be this way.
|
|
|
746
|
|
|
747 ;; Change documented above undone --mrb
|
|
|
748 (pop-to-buffer buffer t (selected-frame))))
|
|
1333
|
749 ;(pop-to-buffer buffer t norecord)))
|
|
|
750
|
|
|
751 ;; FSF 21.2:
|
|
|
752 ; (defun switch-to-buffer-other-frame (buffer &optional norecord)
|
|
|
753 ; "Switch to buffer BUFFER in another frame.
|
|
|
754 ; Optional second arg NORECORD non-nil means
|
|
|
755 ; do not put this buffer at the front of the list of recently selected ones.
|
|
|
756
|
|
|
757 ; This uses the function `display-buffer' as a subroutine; see its
|
|
|
758 ; documentation for additional customization information."
|
|
|
759 ; (interactive "BSwitch to buffer in other frame: ")
|
|
|
760 ; (let ((pop-up-frames t))
|
|
|
761 ; (pop-to-buffer buffer t norecord)
|
|
|
762 ; (raise-frame (window-frame (selected-window)))))
|
|
428
|
763
|
|
|
764 (defun switch-to-buffer-other-frame (buffer)
|
|
1333
|
765 "Switch to buffer BUFFER in a newly-created frame.
|
|
|
766
|
|
|
767 This uses the function `display-buffer' as a subroutine; see its
|
|
|
768 documentation for additional customization information."
|
|
428
|
769 (interactive "BSwitch to buffer in other frame: ")
|
|
|
770 (let* ((name (get-frame-name-for-buffer buffer))
|
|
|
771 (frame (make-frame (if name
|
|
|
772 (list (cons 'name (symbol-name name)))))))
|
|
|
773 (pop-to-buffer buffer t frame)
|
|
|
774 (make-frame-visible frame)
|
|
|
775 buffer))
|
|
|
776
|
|
771
|
777 (defun switch-to-next-buffer (&optional n)
|
|
|
778 "Switch to the next-most-recent buffer.
|
|
|
779 This essentially rotates the buffer list forward.
|
|
|
780 N (interactively, the prefix arg) specifies how many times to rotate
|
|
|
781 forward, and defaults to 1. Buffers whose name begins with a space
|
|
|
782 \(i.e. \"invisible\" buffers) are ignored."
|
|
|
783 ;; Here is a different interactive spec. Look up the function
|
|
|
784 ;; `interactive' (i.e. `C-h f interactive') to understand how this
|
|
|
785 ;; all works.
|
|
|
786 (interactive "p")
|
|
|
787 (dotimes (n (or n 1))
|
|
|
788 (loop
|
|
|
789 do (bury-buffer (car (buffer-list)))
|
|
|
790 while (funcall buffers-tab-omit-function (car (buffer-list))))
|
|
|
791 (switch-to-buffer (car (buffer-list)))))
|
|
|
792
|
|
|
793 (defun switch-to-previous-buffer (&optional n)
|
|
|
794 "Switch to the previously most-recent buffer.
|
|
|
795 This essentially rotates the buffer list backward.
|
|
|
796 N (interactively, the prefix arg) specifies how many times to rotate
|
|
|
797 backward, and defaults to 1. Buffers whose name begins with a space
|
|
|
798 \(i.e. \"invisible\" buffers) are ignored."
|
|
|
799 (interactive "p")
|
|
|
800 (dotimes (n (or n 1))
|
|
|
801 (loop
|
|
|
802 do (switch-to-buffer (car (last (buffer-list))))
|
|
|
803 while (funcall buffers-tab-omit-function (car (buffer-list))))))
|
|
|
804
|
|
|
805 (defun switch-to-next-buffer-in-group (&optional n)
|
|
|
806 "Switch to the next-most-recent buffer in the current group.
|
|
|
807 This essentially rotates the buffer list forward.
|
|
|
808 N (interactively, the prefix arg) specifies how many times to rotate
|
|
|
809 forward, and defaults to 1. Buffers whose name begins with a space
|
|
|
810 \(i.e. \"invisible\" buffers) are ignored."
|
|
|
811 (interactive "p")
|
|
|
812 (dotimes (n (or n 1))
|
|
|
813 (let ((curbuf (car (buffer-list))))
|
|
|
814 (loop
|
|
|
815 do (bury-buffer (car (buffer-list)))
|
|
|
816 while (or (funcall buffers-tab-omit-function (car (buffer-list)))
|
|
|
817 (not (funcall buffers-tab-selection-function
|
|
|
818 curbuf (car (buffer-list)))))))
|
|
|
819 (switch-to-buffer (car (buffer-list)))))
|
|
|
820
|
|
|
821 (defun switch-to-previous-buffer-in-group (&optional n)
|
|
|
822 "Switch to the previously most-recent buffer in the current group.
|
|
|
823 This essentially rotates the buffer list backward.
|
|
|
824 N (interactively, the prefix arg) specifies how many times to rotate
|
|
|
825 backward, and defaults to 1. Buffers whose name begins with a space
|
|
|
826 \(i.e. \"invisible\" buffers) are ignored."
|
|
|
827 (interactive "p")
|
|
|
828 (dotimes (n (or n 1))
|
|
|
829 (let ((curbuf (car (buffer-list))))
|
|
|
830 (loop
|
|
|
831 do (switch-to-buffer (car (last (buffer-list))))
|
|
|
832 while (or (funcall buffers-tab-omit-function (car (buffer-list)))
|
|
|
833 (not (funcall buffers-tab-selection-function
|
|
|
834 curbuf (car (buffer-list)))))))))
|
|
|
835
|
|
1333
|
836 (defun find-file (filename &optional codesys wildcards)
|
|
428
|
837 "Edit file FILENAME.
|
|
771
|
838 Switch to a buffer visiting file FILENAME, creating one if none already
|
|
|
839 exists. Optional second argument specifies the coding system to use when
|
|
|
840 decoding the file. Interactively, with a prefix argument, you will be
|
|
|
841 prompted for the coding system.
|
|
|
842
|
|
|
843 If you do not explicitly specify a coding system, the coding system
|
|
|
844 is determined as follows:
|
|
|
845
|
|
|
846 1. `coding-system-for-read', if non-nil. (This is used by Lisp programs to
|
|
|
847 temporarily set an overriding coding system and should almost never
|
|
|
848 apply here in `find-file'.)
|
|
|
849 2. The result of `insert-file-contents-pre-hook', if non-nil. (This is a
|
|
|
850 complex interface for handling special cases.)
|
|
|
851 3. The matching value for this filename from `file-coding-system-alist',
|
|
|
852 if any. (This lets you specify the coding system to be used for
|
|
|
853 files with particular extensions, names, etc.)
|
|
|
854 4. `buffer-file-coding-system-for-read', if non-nil. (This is the global
|
|
|
855 default -- normally `undecided', so the built-in auto-detection
|
|
|
856 mechanism can do its thing.)
|
|
|
857 5. The coding system 'raw-text.
|
|
|
858
|
|
|
859 See `insert-file-contents' for more details about how the process of
|
|
1333
|
860 determining the coding system works.
|
|
|
861
|
|
|
862 Interactively, or if WILDCARDS is non-nil in a call from Lisp,
|
|
|
863 expand wildcards (if any) and visit multiple files. Wildcard expansion
|
|
|
864 can be suppressed by setting `find-file-wildcards'."
|
|
|
865 (interactive (list (read-file-name "Find file: ")
|
|
|
866 (and current-prefix-arg
|
|
|
867 (read-coding-system "Coding system: "))
|
|
|
868 t))
|
|
428
|
869 (if codesys
|
|
|
870 (let ((coding-system-for-read
|
|
|
871 (get-coding-system codesys)))
|
|
1333
|
872 (let ((value (find-file-noselect filename nil nil wildcards)))
|
|
|
873 (if (listp value)
|
|
|
874 (mapcar 'switch-to-buffer (nreverse value))
|
|
|
875 (switch-to-buffer value))))
|
|
|
876 (let ((value (find-file-noselect filename nil nil wildcards)))
|
|
|
877 (if (listp value)
|
|
|
878 (mapcar 'switch-to-buffer (nreverse value))
|
|
|
879 (switch-to-buffer value)))))
|
|
|
880
|
|
|
881 (defun find-file-other-window (filename &optional codesys wildcards)
|
|
428
|
882 "Edit file FILENAME, in another window.
|
|
771
|
883 May create a new window, or reuse an existing one. See the function
|
|
|
884 `display-buffer'. Optional second argument specifies the coding system to
|
|
|
885 use when decoding the file. Interactively, with a prefix argument, you
|
|
|
886 will be prompted for the coding system."
|
|
1333
|
887 (interactive (list (read-file-name "Find file in other window: ")
|
|
|
888 (and current-prefix-arg
|
|
|
889 (read-coding-system "Coding system: "))
|
|
|
890 t))
|
|
428
|
891 (if codesys
|
|
|
892 (let ((coding-system-for-read
|
|
|
893 (get-coding-system codesys)))
|
|
1333
|
894 (let ((value (find-file-noselect filename nil nil wildcards)))
|
|
|
895 (if (listp value)
|
|
|
896 (progn
|
|
|
897 (setq value (nreverse value))
|
|
|
898 (switch-to-buffer-other-window (car value))
|
|
|
899 (mapcar 'switch-to-buffer (cdr value)))
|
|
|
900 (switch-to-buffer-other-window value))))
|
|
|
901 (let ((value (find-file-noselect filename nil nil wildcards)))
|
|
|
902 (if (listp value)
|
|
|
903 (progn
|
|
|
904 (setq value (nreverse value))
|
|
|
905 (switch-to-buffer-other-window (car value))
|
|
|
906 (mapcar 'switch-to-buffer (cdr value)))
|
|
|
907 (switch-to-buffer-other-window value)))))
|
|
|
908
|
|
|
909 (defun find-file-other-frame (filename &optional codesys wildcards)
|
|
428
|
910 "Edit file FILENAME, in a newly-created frame.
|
|
771
|
911 Optional second argument specifies the coding system to use when decoding
|
|
|
912 the file. Interactively, with a prefix argument, you will be prompted for
|
|
|
913 the coding system."
|
|
1333
|
914 (interactive (list (read-file-name "Find file in other frame: ")
|
|
|
915 (and current-prefix-arg
|
|
|
916 (read-coding-system "Coding system: "))
|
|
|
917 t))
|
|
428
|
918 (if codesys
|
|
|
919 (let ((coding-system-for-read
|
|
|
920 (get-coding-system codesys)))
|
|
1333
|
921 (let ((value (find-file-noselect filename nil nil wildcards)))
|
|
|
922 (if (listp value)
|
|
|
923 (progn
|
|
|
924 (setq value (nreverse value))
|
|
|
925 (switch-to-buffer-other-frame (car value))
|
|
|
926 (mapcar 'switch-to-buffer (cdr value)))
|
|
|
927 (switch-to-buffer-other-frame value))))
|
|
|
928 (let ((value (find-file-noselect filename nil nil wildcards)))
|
|
|
929 (if (listp value)
|
|
|
930 (progn
|
|
|
931 (setq value (nreverse value))
|
|
|
932 (switch-to-buffer-other-frame (car value))
|
|
|
933 (mapcar 'switch-to-buffer (cdr value)))
|
|
|
934 (switch-to-buffer-other-frame value)))))
|
|
|
935
|
|
|
936 (defun find-file-read-only (filename &optional codesys wildcards)
|
|
428
|
937 "Edit file FILENAME but don't allow changes.
|
|
|
938 Like \\[find-file] but marks buffer as read-only.
|
|
|
939 Use \\[toggle-read-only] to permit editing.
|
|
771
|
940 Optional second argument specifies the coding system to use when decoding
|
|
|
941 the file. Interactively, with a prefix argument, you will be prompted for
|
|
|
942 the coding system."
|
|
1333
|
943 (interactive (list (read-file-name "Find file read-only: ")
|
|
|
944 (and current-prefix-arg
|
|
|
945 (read-coding-system "Coding system: "))
|
|
|
946 t))
|
|
428
|
947 (if codesys
|
|
|
948 (let ((coding-system-for-read
|
|
|
949 (get-coding-system codesys)))
|
|
1333
|
950 (find-file filename nil wildcards))
|
|
|
951 (find-file filename nil wildcards))
|
|
428
|
952 (setq buffer-read-only t)
|
|
|
953 (current-buffer))
|
|
|
954
|
|
1333
|
955 (defun find-file-read-only-other-window (filename &optional codesys wildcards)
|
|
428
|
956 "Edit file FILENAME in another window but don't allow changes.
|
|
|
957 Like \\[find-file-other-window] but marks buffer as read-only.
|
|
|
958 Use \\[toggle-read-only] to permit editing.
|
|
771
|
959 Optional second argument specifies the coding system to use when decoding
|
|
|
960 the file. Interactively, with a prefix argument, you will be prompted for
|
|
|
961 the coding system."
|
|
1333
|
962 (interactive (list (read-file-name "Find file read-only other window: ")
|
|
|
963 (and current-prefix-arg
|
|
|
964 (read-coding-system "Coding system: "))
|
|
|
965 t))
|
|
428
|
966 (if codesys
|
|
|
967 (let ((coding-system-for-read
|
|
|
968 (get-coding-system codesys)))
|
|
|
969 (find-file-other-window filename))
|
|
|
970 (find-file-other-window filename))
|
|
|
971 (setq buffer-read-only t)
|
|
|
972 (current-buffer))
|
|
|
973
|
|
1333
|
974 (defun find-file-read-only-other-frame (filename &optional codesys wildcards)
|
|
428
|
975 "Edit file FILENAME in another frame but don't allow changes.
|
|
|
976 Like \\[find-file-other-frame] but marks buffer as read-only.
|
|
|
977 Use \\[toggle-read-only] to permit editing.
|
|
771
|
978 Optional second argument specifies the coding system to use when decoding
|
|
|
979 the file. Interactively, with a prefix argument, you will be prompted for
|
|
|
980 the coding system."
|
|
1333
|
981 (interactive (list (read-file-name "Find file read-only other frame: ")
|
|
|
982 (and current-prefix-arg
|
|
|
983 (read-coding-system "Coding system: "))
|
|
|
984 t))
|
|
428
|
985 (if codesys
|
|
|
986 (let ((coding-system-for-read
|
|
|
987 (get-coding-system codesys)))
|
|
|
988 (find-file-other-frame filename))
|
|
|
989 (find-file-other-frame filename))
|
|
|
990 (setq buffer-read-only t)
|
|
|
991 (current-buffer))
|
|
|
992
|
|
|
993 (defun find-alternate-file-other-window (filename &optional codesys)
|
|
|
994 "Find file FILENAME as a replacement for the file in the next window.
|
|
771
|
995 This command does not select that window. Optional second argument
|
|
|
996 specifies the coding system to use when decoding the file. Interactively,
|
|
428
|
997 with a prefix argument, you will be prompted for the coding system."
|
|
|
998 (interactive
|
|
|
999 (save-selected-window
|
|
|
1000 (other-window 1)
|
|
|
1001 (let ((file buffer-file-name)
|
|
|
1002 (file-name nil)
|
|
|
1003 (file-dir nil))
|
|
|
1004 (and file
|
|
|
1005 (setq file-name (file-name-nondirectory file)
|
|
|
1006 file-dir (file-name-directory file)))
|
|
|
1007 (list (read-file-name
|
|
|
1008 "Find alternate file: " file-dir nil nil file-name)
|
|
771
|
1009 (if current-prefix-arg (read-coding-system "Coding-system: "))))))
|
|
428
|
1010 (if (one-window-p)
|
|
|
1011 (find-file-other-window filename)
|
|
|
1012 (save-selected-window
|
|
|
1013 (other-window 1)
|
|
|
1014 (find-alternate-file filename codesys))))
|
|
|
1015
|
|
|
1016 (defun find-alternate-file (filename &optional codesys)
|
|
|
1017 "Find file FILENAME, select its buffer, kill previous buffer.
|
|
|
1018 If the current buffer now contains an empty file that you just visited
|
|
771
|
1019 \(presumably by mistake), use this command to visit the file you really
|
|
|
1020 want. Optional second argument specifies the coding system to use when
|
|
|
1021 decoding the file. Interactively, with a prefix argument, you will be
|
|
|
1022 prompted for the coding system."
|
|
428
|
1023 (interactive
|
|
|
1024 (let ((file buffer-file-name)
|
|
|
1025 (file-name nil)
|
|
|
1026 (file-dir nil))
|
|
|
1027 (and file
|
|
|
1028 (setq file-name (file-name-nondirectory file)
|
|
|
1029 file-dir (file-name-directory file)))
|
|
|
1030 (list (read-file-name
|
|
|
1031 "Find alternate file: " file-dir nil nil file-name)
|
|
771
|
1032 (if current-prefix-arg (read-coding-system "Coding-system: ")))))
|
|
428
|
1033 (and (buffer-modified-p) (buffer-file-name)
|
|
|
1034 ;; (not buffer-read-only)
|
|
|
1035 (not (yes-or-no-p (format
|
|
|
1036 "Buffer %s is modified; kill anyway? "
|
|
|
1037 (buffer-name))))
|
|
|
1038 (error "Aborted"))
|
|
|
1039 (let ((obuf (current-buffer))
|
|
|
1040 (ofile buffer-file-name)
|
|
|
1041 (onum buffer-file-number)
|
|
|
1042 (otrue buffer-file-truename)
|
|
|
1043 (oname (buffer-name)))
|
|
|
1044 (if (get-buffer " **lose**")
|
|
|
1045 (kill-buffer " **lose**"))
|
|
|
1046 (rename-buffer " **lose**")
|
|
|
1047 (setq buffer-file-name nil)
|
|
|
1048 (setq buffer-file-number nil)
|
|
|
1049 (setq buffer-file-truename nil)
|
|
|
1050 (unwind-protect
|
|
|
1051 (progn
|
|
|
1052 (unlock-buffer)
|
|
|
1053 (if codesys
|
|
|
1054 (let ((coding-system-for-read
|
|
|
1055 (get-coding-system codesys)))
|
|
|
1056 (find-file filename))
|
|
|
1057 (find-file filename)))
|
|
|
1058 (cond ((eq obuf (current-buffer))
|
|
|
1059 (setq buffer-file-name ofile)
|
|
|
1060 (setq buffer-file-number onum)
|
|
|
1061 (setq buffer-file-truename otrue)
|
|
|
1062 (lock-buffer)
|
|
|
1063 (rename-buffer oname))))
|
|
|
1064 (or (eq (current-buffer) obuf)
|
|
|
1065 (kill-buffer obuf))))
|
|
1333
|
1066
|
|
428
|
1067 (defun create-file-buffer (filename)
|
|
|
1068 "Create a suitably named buffer for visiting FILENAME, and return it.
|
|
|
1069 FILENAME (sans directory) is used unchanged if that name is free;
|
|
|
1070 otherwise a string <2> or <3> or ... is appended to get an unused name."
|
|
|
1071 (let ((handler (find-file-name-handler filename 'create-file-buffer)))
|
|
|
1072 (if handler
|
|
|
1073 (funcall handler 'create-file-buffer filename)
|
|
|
1074 (let ((lastname (file-name-nondirectory filename)))
|
|
|
1075 (if (string= lastname "")
|
|
|
1076 (setq lastname filename))
|
|
|
1077 (generate-new-buffer lastname)))))
|
|
|
1078
|
|
|
1079 (defun generate-new-buffer (name)
|
|
|
1080 "Create and return a buffer with a name based on NAME.
|
|
|
1081 Choose the buffer's name using `generate-new-buffer-name'."
|
|
|
1082 (get-buffer-create (generate-new-buffer-name name)))
|
|
|
1083
|
|
|
1084 (defvar abbreviated-home-dir nil
|
|
|
1085 "The user's homedir abbreviated according to `directory-abbrev-alist'.")
|
|
|
1086
|
|
|
1087 (defun abbreviate-file-name (filename &optional hack-homedir)
|
|
|
1088 "Return a version of FILENAME shortened using `directory-abbrev-alist'.
|
|
1333
|
1089 Type \\[describe-variable] directory-abbrev-alist RET for more information.
|
|
428
|
1090 If optional argument HACK-HOMEDIR is non-nil, then this also substitutes
|
|
|
1091 \"~\" for the user's home directory."
|
|
|
1092 (let ((handler (find-file-name-handler filename 'abbreviate-file-name)))
|
|
|
1093 (if handler
|
|
|
1094 (funcall handler 'abbreviate-file-name filename hack-homedir)
|
|
|
1095 ;; Get rid of the prefixes added by the automounter.
|
|
|
1096 ;;(if (and (string-match automount-dir-prefix filename)
|
|
|
1097 ;; (file-exists-p (file-name-directory
|
|
|
1098 ;; (substring filename (1- (match-end 0))))))
|
|
|
1099 ;; (setq filename (substring filename (1- (match-end 0)))))
|
|
|
1100 (let ((tail directory-abbrev-alist))
|
|
|
1101 ;; If any elt of directory-abbrev-alist matches this name,
|
|
|
1102 ;; abbreviate accordingly.
|
|
|
1103 (while tail
|
|
|
1104 (when (string-match (car (car tail)) filename)
|
|
|
1105 (setq filename
|
|
|
1106 (concat (cdr (car tail)) (substring filename (match-end 0)))))
|
|
|
1107 (setq tail (cdr tail))))
|
|
|
1108 (when hack-homedir
|
|
|
1109 ;; Compute and save the abbreviated homedir name.
|
|
440
|
1110 ;; We defer computing this until the first time it's needed,
|
|
|
1111 ;; to give time for directory-abbrev-alist to be set properly.
|
|
|
1112 ;; We include the separator at the end, to avoid spurious
|
|
|
1113 ;; matches such as `/usr/foobar' when the home dir is
|
|
|
1114 ;; `/usr/foo'.
|
|
428
|
1115 (or abbreviated-home-dir
|
|
|
1116 (setq abbreviated-home-dir
|
|
|
1117 (let ((abbreviated-home-dir "$foo"))
|
|
440
|
1118 (concat "\\`"
|
|
|
1119 (regexp-quote
|
|
|
1120 (abbreviate-file-name (expand-file-name "~")))
|
|
|
1121 "\\("
|
|
|
1122 (regexp-quote (string directory-sep-char))
|
|
|
1123 "\\|\\'\\)"))))
|
|
428
|
1124 ;; If FILENAME starts with the abbreviated homedir,
|
|
|
1125 ;; make it start with `~' instead.
|
|
|
1126 (if (and (string-match abbreviated-home-dir filename)
|
|
|
1127 ;; If the home dir is just /, don't change it.
|
|
440
|
1128 (not (and (= (match-end 0) 1)
|
|
|
1129 (= (aref filename 0) directory-sep-char)))
|
|
|
1130 (not (and (eq system-type 'windows-nt)
|
|
428
|
1131 (save-match-data
|
|
440
|
1132 (string-match (concat "\\`[a-zA-Z]:"
|
|
|
1133 (regexp-quote
|
|
|
1134 (string directory-sep-char))
|
|
|
1135 "\\'")
|
|
|
1136 filename)))))
|
|
428
|
1137 (setq filename
|
|
|
1138 (concat "~"
|
|
440
|
1139 (match-string 1 filename)
|
|
428
|
1140 (substring filename (match-end 0))))))
|
|
|
1141 filename)))
|
|
|
1142
|
|
|
1143 (defcustom find-file-not-true-dirname-list nil
|
|
|
1144 "*List of logical names for which visiting shouldn't save the true dirname."
|
|
|
1145 :type '(repeat (string :tag "Name"))
|
|
|
1146 :group 'find-file)
|
|
|
1147
|
|
|
1148 ;; This function is needed by FSF vc.el. I hope somebody can make it
|
|
|
1149 ;; work for XEmacs. -sb.
|
|
|
1150 ;; #### In what way does it not work? --hniksic
|
|
|
1151 (defun find-buffer-visiting (filename)
|
|
|
1152 "Return the buffer visiting file FILENAME (a string).
|
|
|
1153 This is like `get-file-buffer', except that it checks for any buffer
|
|
|
1154 visiting the same file, possibly under a different name.
|
|
|
1155 If there is no such live buffer, return nil."
|
|
|
1156 (let ((buf (get-file-buffer filename))
|
|
|
1157 (truename (abbreviate-file-name (file-truename filename))))
|
|
|
1158 (or buf
|
|
|
1159 (let ((list (buffer-list)) found)
|
|
|
1160 (while (and (not found) list)
|
|
|
1161 (save-excursion
|
|
|
1162 (set-buffer (car list))
|
|
|
1163 (if (and buffer-file-name
|
|
|
1164 (string= buffer-file-truename truename))
|
|
|
1165 (setq found (car list))))
|
|
|
1166 (setq list (cdr list)))
|
|
|
1167 found)
|
|
1333
|
1168 (let* ((attributes (file-attributes truename))
|
|
|
1169 (number (nthcdr 10 attributes))
|
|
|
1170 (list (buffer-list)) found)
|
|
428
|
1171 (and buffer-file-numbers-unique
|
|
|
1172 number
|
|
|
1173 (while (and (not found) list)
|
|
1333
|
1174 (with-current-buffer (car list)
|
|
|
1175 (if (and buffer-file-name
|
|
|
1176 (equal buffer-file-number number)
|
|
428
|
1177 ;; Verify this buffer's file number
|
|
|
1178 ;; still belongs to its file.
|
|
|
1179 (file-exists-p buffer-file-name)
|
|
1333
|
1180 (equal (file-attributes buffer-file-name)
|
|
|
1181 attributes))
|
|
428
|
1182 (setq found (car list))))
|
|
|
1183 (setq list (cdr list))))
|
|
|
1184 found))))
|
|
1333
|
1185
|
|
|
1186 (defcustom find-file-wildcards t
|
|
|
1187 "*Non-nil means file-visiting commands should handle wildcards.
|
|
|
1188 For example, if you specify `*.c', that would visit all the files
|
|
|
1189 whose names match the pattern."
|
|
|
1190 :group 'files
|
|
|
1191 ; :version "20.4"
|
|
|
1192 :type 'boolean)
|
|
|
1193
|
|
|
1194 (defcustom find-file-suppress-same-file-warnings nil
|
|
|
1195 "*Non-nil means suppress warning messages for symlinked files.
|
|
|
1196 When nil, Emacs prints a warning when visiting a file that is already
|
|
|
1197 visited, but with a different name. Setting this option to t
|
|
|
1198 suppresses this warning."
|
|
|
1199 :group 'files
|
|
|
1200 ; :version "21.1"
|
|
|
1201 :type 'boolean)
|
|
|
1202
|
|
|
1203 (defun find-file-noselect (filename &optional nowarn rawfile wildcards)
|
|
|
1204 "Read file FILENAME into a buffer and return the buffer.
|
|
|
1205 If a buffer exists visiting FILENAME, return that one, but
|
|
|
1206 verify that the file has not changed since visited or saved.
|
|
|
1207 The buffer is not selected, just returned to the caller.
|
|
|
1208 If NOWARN is non-nil, warning messages will be suppressed.
|
|
|
1209 If RAWFILE is non-nil, the file is read literally."
|
|
|
1210 (setq filename
|
|
|
1211 (abbreviate-file-name
|
|
|
1212 (expand-file-name filename)))
|
|
|
1213 (if (file-directory-p filename)
|
|
|
1214 (or (and find-file-run-dired
|
|
|
1215 (loop for fn in find-directory-functions
|
|
|
1216 for x = (and (fboundp fn)
|
|
|
1217 (funcall fn
|
|
|
1218 (if find-file-use-truenames
|
|
|
1219 (abbreviate-file-name
|
|
|
1220 (file-truename filename))
|
|
|
1221 filename)))
|
|
|
1222 if x
|
|
|
1223 return x))
|
|
|
1224 (error "%s is a directory" filename))
|
|
|
1225 (if (and wildcards
|
|
|
1226 find-file-wildcards
|
|
|
1227 (not (string-match "\\`/:" filename))
|
|
|
1228 (string-match "[[*?]" filename))
|
|
|
1229 (let ((files (condition-case nil
|
|
|
1230 (file-expand-wildcards filename t)
|
|
|
1231 (error (list filename))))
|
|
|
1232 (find-file-wildcards nil))
|
|
|
1233 (if (null files)
|
|
|
1234 (find-file-noselect filename)
|
|
|
1235 (mapcar #'find-file-noselect files)))
|
|
|
1236 (let* ((buf (get-file-buffer filename))
|
|
|
1237 (truename (abbreviate-file-name (file-truename filename)))
|
|
|
1238 (number (nthcdr 10 (file-attributes truename)))
|
|
|
1239 ; ;; Find any buffer for a file which has same truename.
|
|
|
1240 ; (other (and (not buf) (find-buffer-visiting filename)))
|
|
1346
|
1241 )
|
|
1333
|
1242
|
|
|
1243 ; ;; Let user know if there is a buffer with the same truename.
|
|
|
1244 ; (if other
|
|
|
1245 ; (progn
|
|
|
1246 ; (or nowarn
|
|
|
1247 ; find-file-suppress-same-file-warnings
|
|
|
1248 ; (string-equal filename (buffer-file-name other))
|
|
|
1249 ; (message "%s and %s are the same file"
|
|
|
1250 ; filename (buffer-file-name other)))
|
|
|
1251 ; ;; Optionally also find that buffer.
|
|
|
1252 ; (if (or find-file-existing-other-name find-file-visit-truename)
|
|
|
1253 ; (setq buf other))))
|
|
|
1254
|
|
|
1255 (when (and buf
|
|
|
1256 (or find-file-compare-truenames find-file-use-truenames)
|
|
|
1257 (not find-file-suppress-same-file-warnings)
|
|
|
1258 (not nowarn))
|
|
|
1259 (save-excursion
|
|
|
1260 (set-buffer buf)
|
|
|
1261 (if (not (string-equal buffer-file-name filename))
|
|
|
1262 (message "%s and %s are the same file (%s)"
|
|
|
1263 filename buffer-file-name
|
|
|
1264 buffer-file-truename))))
|
|
|
1265
|
|
|
1266 (if buf
|
|
|
1267 (progn
|
|
|
1268 (or nowarn
|
|
|
1269 (verify-visited-file-modtime buf)
|
|
|
1270 (cond ((not (file-exists-p filename))
|
|
|
1271 (error "File %s no longer exists!" filename))
|
|
|
1272 ;; Certain files should be reverted automatically
|
|
|
1273 ;; if they have changed on disk and not in the buffer.
|
|
|
1274 ((and (not (buffer-modified-p buf))
|
|
|
1275 (dolist (rx revert-without-query nil)
|
|
|
1276 (when (string-match rx filename)
|
|
|
1277 (return t))))
|
|
|
1278 (with-current-buffer buf
|
|
|
1279 (message "Reverting file %s..." filename)
|
|
|
1280 (revert-buffer t t)
|
|
|
1281 (message "Reverting file %s... done" filename)))
|
|
|
1282 ((yes-or-no-p
|
|
|
1283 (if (string= (file-name-nondirectory filename)
|
|
|
1284 (buffer-name buf))
|
|
|
1285 (format
|
|
|
1286 (if (buffer-modified-p buf)
|
|
|
1287 (gettext "File %s changed on disk. Discard your edits? ")
|
|
|
1288 (gettext "File %s changed on disk. Reread from disk? "))
|
|
|
1289 (file-name-nondirectory filename))
|
|
|
1290 (format
|
|
|
1291 (if (buffer-modified-p buf)
|
|
|
1292 (gettext "File %s changed on disk. Discard your edits in %s? ")
|
|
|
1293 (gettext "File %s changed on disk. Reread from disk into %s? "))
|
|
|
1294 (file-name-nondirectory filename)
|
|
|
1295 (buffer-name buf))))
|
|
|
1296 (with-current-buffer buf
|
|
|
1297 (revert-buffer t t)))))
|
|
|
1298 (when (not (eq rawfile (not (null find-file-literally))))
|
|
|
1299 (with-current-buffer buf
|
|
|
1300 (if (buffer-modified-p)
|
|
|
1301 (if (y-or-n-p (if rawfile
|
|
|
1302 "Save file and revisit literally? "
|
|
|
1303 "Save file and revisit non-literally? "))
|
|
|
1304 (progn
|
|
|
1305 (save-buffer)
|
|
|
1306 (find-file-noselect-1 buf filename nowarn
|
|
|
1307 rawfile truename number))
|
|
|
1308 (if (y-or-n-p (if rawfile
|
|
|
1309 "Discard your edits and revisit file literally? "
|
|
|
1310 "Discard your edits and revisit file non-literally? "))
|
|
|
1311 (find-file-noselect-1 buf filename nowarn
|
|
|
1312 rawfile truename number)
|
|
|
1313 (error (if rawfile "File already visited non-literally"
|
|
|
1314 "File already visited literally"))))
|
|
|
1315 (if (y-or-n-p (if rawfile
|
|
|
1316 "Revisit file literally? "
|
|
|
1317 "Revisit file non-literally? "))
|
|
|
1318 (find-file-noselect-1 buf filename nowarn
|
|
|
1319 rawfile truename number)
|
|
|
1320 (error (if rawfile "File already visited non-literally"
|
|
|
1321 "File already visited literally"))))))
|
|
|
1322 ;; Return the buffer we are using.
|
|
|
1323 buf)
|
|
|
1324 ;; Create a new buffer.
|
|
|
1325 (setq buf (create-file-buffer filename))
|
|
|
1326 ;; Catch various signals, such as QUIT, and kill the buffer
|
|
|
1327 ;; in that case.
|
|
|
1328 (condition-case data
|
|
|
1329 (progn
|
|
|
1330 (set-buffer-major-mode buf)
|
|
|
1331 ;; find-file-noselect-1 may use a different buffer.
|
|
|
1332 (find-file-noselect-1 buf filename nowarn
|
|
|
1333 rawfile truename number))
|
|
|
1334 (t
|
|
|
1335 (kill-buffer buf)
|
|
|
1336 (signal (car data) (cdr data)))))))))
|
|
|
1337
|
|
|
1338 (defun find-file-noselect-1 (buf filename nowarn rawfile truename number)
|
|
|
1339 (let ((inhibit-read-only t)
|
|
|
1340 error)
|
|
|
1341 (with-current-buffer buf
|
|
|
1342 (kill-local-variable 'find-file-literally)
|
|
|
1343 ;; Needed in case we are re-visiting the file with a different
|
|
|
1344 ;; text representation.
|
|
|
1345 (kill-local-variable 'buffer-file-coding-system)
|
|
|
1346 (erase-buffer)
|
|
|
1347 ; (and (default-value 'enable-multibyte-characters)
|
|
|
1348 ; (not rawfile)
|
|
|
1349 ; (set-buffer-multibyte t))
|
|
|
1350 (condition-case ()
|
|
|
1351 (if rawfile
|
|
|
1352 (insert-file-contents-literally filename t)
|
|
|
1353 (insert-file-contents filename t))
|
|
|
1354 (file-error
|
|
|
1355 (when (and (file-exists-p filename)
|
|
|
1356 (not (file-readable-p filename)))
|
|
|
1357 (signal 'file-error (list "File is not readable" filename)))
|
|
|
1358 (if rawfile
|
|
|
1359 ;; Unconditionally set error
|
|
|
1360 (setq error t)
|
|
|
1361 (or
|
|
|
1362 ;; Run find-file-not-found-hooks until one returns non-nil.
|
|
|
1363 (run-hook-with-args-until-success 'find-file-not-found-hooks)
|
|
|
1364 ;; If they fail too, set error.
|
|
|
1365 (setq error t)))))
|
|
|
1366 ;; Find the file's truename, and maybe use that as visited name.
|
|
|
1367 ;; automatically computed in XEmacs, unless jka-compr was used!
|
|
|
1368 (unless buffer-file-truename
|
|
|
1369 (setq buffer-file-truename truename))
|
|
|
1370 (setq buffer-file-number number)
|
|
|
1371 (and find-file-use-truenames
|
|
|
1372 ;; This should be in C. Put pathname
|
|
|
1373 ;; abbreviations that have been explicitly
|
|
|
1374 ;; requested back into the pathname. Most
|
|
|
1375 ;; importantly, strip out automounter /tmp_mnt
|
|
|
1376 ;; directories so that auto-save will work
|
|
|
1377 (setq buffer-file-name (abbreviate-file-name buffer-file-name)))
|
|
|
1378 ;; Set buffer's default directory to that of the file.
|
|
|
1379 (setq default-directory (file-name-directory buffer-file-name))
|
|
|
1380 ;; Turn off backup files for certain file names. Since
|
|
|
1381 ;; this is a permanent local, the major mode won't eliminate it.
|
|
|
1382 (and (not (funcall backup-enable-predicate buffer-file-name))
|
|
|
1383 (progn
|
|
|
1384 (make-local-variable 'backup-inhibited)
|
|
|
1385 (setq backup-inhibited t)))
|
|
|
1386 (if rawfile
|
|
|
1387 (progn
|
|
|
1388 (setq buffer-file-coding-system 'no-conversion)
|
|
|
1389 (make-local-variable 'find-file-literally)
|
|
|
1390 (setq find-file-literally t))
|
|
|
1391 (after-find-file error (not nowarn))
|
|
|
1392 (setq buf (current-buffer)))
|
|
|
1393 (current-buffer))))
|
|
|
1394
|
|
444
|
1395 (defun insert-file-contents-literally (filename &optional visit start end replace)
|
|
1333
|
1396 "Like `insert-file-contents', but only reads in the file literally.
|
|
|
1397 A buffer may be modified in several ways after reading into the buffer,
|
|
|
1398 due to Emacs features such as format decoding, character code
|
|
|
1399 conversion, `find-file-hooks', automatic uncompression, etc.
|
|
|
1400
|
|
|
1401 This function ensures that none of these modifications will take place."
|
|
442
|
1402 (let ((wrap-func (find-file-name-handler filename
|
|
|
1403 'insert-file-contents-literally)))
|
|
444
|
1404 (if wrap-func
|
|
442
|
1405 (funcall wrap-func 'insert-file-contents-literally filename
|
|
444
|
1406 visit start end replace)
|
|
442
|
1407 (let ((file-name-handler-alist nil)
|
|
|
1408 (format-alist nil)
|
|
|
1409 (after-insert-file-functions nil)
|
|
|
1410 (coding-system-for-read 'binary)
|
|
|
1411 (coding-system-for-write 'binary)
|
|
|
1412 (find-buffer-file-type-function
|
|
|
1413 (if (fboundp 'find-buffer-file-type)
|
|
|
1414 (symbol-function 'find-buffer-file-type)
|
|
1333
|
1415 nil))
|
|
|
1416 (inhibit-file-name-handlers '(jka-compr-handler image-file-handler))
|
|
|
1417 (inhibit-file-name-operation 'insert-file-contents))
|
|
442
|
1418 (unwind-protect
|
|
|
1419 (progn
|
|
|
1420 (fset 'find-buffer-file-type (lambda (filename) t))
|
|
444
|
1421 (insert-file-contents filename visit start end replace))
|
|
442
|
1422 (if find-buffer-file-type-function
|
|
|
1423 (fset 'find-buffer-file-type find-buffer-file-type-function)
|
|
|
1424 (fmakunbound 'find-buffer-file-type)))))))
|
|
428
|
1425
|
|
1333
|
1426 (defun insert-file-literally (filename)
|
|
|
1427 "Insert contents of file FILENAME into buffer after point with no conversion.
|
|
|
1428
|
|
|
1429 This function is meant for the user to run interactively.
|
|
|
1430 Don't call it from programs! Use `insert-file-contents-literally' instead.
|
|
|
1431 \(Its calling sequence is different; see its documentation)."
|
|
|
1432 (interactive "*fInsert file literally: ")
|
|
428
|
1433 (if (file-directory-p filename)
|
|
1333
|
1434 (signal 'file-error (list "Opening input file" "file is a directory"
|
|
|
1435 filename)))
|
|
|
1436 (let ((tem (insert-file-contents-literally filename)))
|
|
|
1437 (push-mark (+ (point) (car (cdr tem))))))
|
|
|
1438
|
|
|
1439 (defvar find-file-literally nil
|
|
|
1440 "Non-nil if this buffer was made by `find-file-literally' or equivalent.
|
|
|
1441 This is a permanent local.")
|
|
|
1442 (put 'find-file-literally 'permanent-local t)
|
|
|
1443
|
|
|
1444 (defun find-file-literally (filename)
|
|
|
1445 "Visit file FILENAME with no conversion of any kind.
|
|
|
1446 Format conversion and character code conversion are both disabled,
|
|
|
1447 and multibyte characters are disabled in the resulting buffer.
|
|
|
1448 The major mode used is Fundamental mode regardless of the file name,
|
|
|
1449 and local variable specifications in the file are ignored.
|
|
|
1450 Automatic uncompression and adding a newline at the end of the
|
|
|
1451 file due to `require-final-newline' is also disabled.
|
|
|
1452
|
|
|
1453 You cannot absolutely rely on this function to result in
|
|
|
1454 visiting the file literally. If Emacs already has a buffer
|
|
|
1455 which is visiting the file, you get the existing buffer,
|
|
|
1456 regardless of whether it was created literally or not.
|
|
|
1457
|
|
|
1458 In a Lisp program, if you want to be sure of accessing a file's
|
|
|
1459 contents literally, you should create a temporary buffer and then read
|
|
|
1460 the file contents into it using `insert-file-contents-literally'."
|
|
|
1461 (interactive "FFind file literally: ")
|
|
|
1462 (switch-to-buffer (find-file-noselect filename nil t)))
|
|
428
|
1463
|
|
|
1464 (defvar after-find-file-from-revert-buffer nil)
|
|
|
1465
|
|
|
1466 (defun after-find-file (&optional error warn noauto
|
|
|
1467 after-find-file-from-revert-buffer
|
|
|
1468 nomodes)
|
|
|
1469 "Called after finding a file and by the default revert function.
|
|
|
1470 Sets buffer mode, parses local variables.
|
|
|
1471 Optional args ERROR, WARN, and NOAUTO: ERROR non-nil means there was an
|
|
|
1472 error in reading the file. WARN non-nil means warn if there
|
|
|
1473 exists an auto-save file more recent than the visited file.
|
|
|
1474 NOAUTO means don't mess with auto-save mode.
|
|
|
1475 Fourth arg AFTER-FIND-FILE-FROM-REVERT-BUFFER non-nil
|
|
|
1476 means this call was from `revert-buffer'.
|
|
|
1477 Fifth arg NOMODES non-nil means don't alter the file's modes.
|
|
1333
|
1478 Finishes by calling the functions in `find-file-hooks'
|
|
|
1479 unless NOMODES is non-nil."
|
|
428
|
1480 (setq buffer-read-only (not (file-writable-p buffer-file-name)))
|
|
|
1481 (if noninteractive
|
|
|
1482 nil
|
|
|
1483 (let* (not-serious
|
|
|
1484 (msg
|
|
1333
|
1485 (cond
|
|
|
1486 ((not warn) nil)
|
|
|
1487 ((and error (file-attributes buffer-file-name))
|
|
|
1488 (setq buffer-read-only t)
|
|
|
1489 (gettext "File exists, but cannot be read."))
|
|
|
1490 ((not buffer-read-only)
|
|
|
1491 (if (and warn
|
|
|
1492 (file-newer-than-file-p (make-auto-save-file-name)
|
|
|
1493 buffer-file-name))
|
|
|
1494 (format "%s has auto save data; consider M-x recover-file"
|
|
|
1495 (file-name-nondirectory buffer-file-name))
|
|
|
1496 (setq not-serious t)
|
|
|
1497 (if error (gettext "(New file)") nil)))
|
|
|
1498 ((not error)
|
|
|
1499 (setq not-serious t)
|
|
|
1500 (gettext "Note: file is write protected"))
|
|
|
1501 ((file-attributes (directory-file-name default-directory))
|
|
|
1502 (gettext "File not found and directory write-protected"))
|
|
|
1503 ((file-exists-p (file-name-directory buffer-file-name))
|
|
|
1504 (setq buffer-read-only nil))
|
|
|
1505 (t
|
|
|
1506 ;; If the directory the buffer is in doesn't exist,
|
|
|
1507 ;; offer to create it. It's better to do this now
|
|
|
1508 ;; than when we save the buffer, because we want
|
|
|
1509 ;; autosaving to work.
|
|
|
1510 (setq buffer-read-only nil)
|
|
|
1511 ;; XEmacs
|
|
|
1512 (or (file-exists-p (file-name-directory buffer-file-name))
|
|
|
1513 (condition-case nil
|
|
|
1514 (if (yes-or-no-p
|
|
|
1515 (format
|
|
|
1516 "\
|
|
428
|
1517 The directory containing %s does not exist. Create? "
|
|
1333
|
1518 (abbreviate-file-name buffer-file-name)))
|
|
|
1519 (make-directory (file-name-directory
|
|
|
1520 buffer-file-name)
|
|
|
1521 t))
|
|
|
1522 (quit
|
|
|
1523 (kill-buffer (current-buffer))
|
|
|
1524 (signal 'quit nil))))
|
|
|
1525 nil))))
|
|
428
|
1526 (if msg
|
|
|
1527 (progn
|
|
|
1528 (message "%s" msg)
|
|
|
1529 (or not-serious (sit-for 1 t)))))
|
|
1333
|
1530 (when (and auto-save-default (not noauto))
|
|
428
|
1531 (auto-save-mode t)))
|
|
1333
|
1532 ;; Make people do a little extra work (C-x C-q)
|
|
|
1533 ;; before altering a backup file.
|
|
|
1534 (when (backup-file-name-p buffer-file-name)
|
|
|
1535 (setq buffer-read-only t))
|
|
428
|
1536 (unless nomodes
|
|
1333
|
1537 ;; #### No view-mode-disable.
|
|
|
1538 ; (when view-read-only
|
|
|
1539 ; (and-boundp 'view-mode (view-mode-disable)))
|
|
428
|
1540 (normal-mode t)
|
|
1333
|
1541 (when (and buffer-read-only
|
|
|
1542 view-read-only
|
|
|
1543 (not (eq (get major-mode 'mode-class) 'special)))
|
|
|
1544 (view-mode))
|
|
428
|
1545 (run-hooks 'find-file-hooks)))
|
|
|
1546
|
|
|
1547 (defun normal-mode (&optional find-file)
|
|
|
1548 "Choose the major mode for this buffer automatically.
|
|
|
1549 Also sets up any specified local variables of the file.
|
|
|
1550 Uses the visited file name, the -*- line, and the local variables spec.
|
|
|
1551
|
|
|
1552 This function is called automatically from `find-file'. In that case,
|
|
1333
|
1553 we may set up the file-specified mode and local variables,
|
|
|
1554 depending on the value of `enable-local-variables': if it is t, we do;
|
|
|
1555 if it is nil, we don't; otherwise, we query.
|
|
|
1556 In addition, if `local-enable-local-variables' is nil, we do
|
|
|
1557 not set local variables (though we do notice a mode specified with -*-.)
|
|
|
1558
|
|
|
1559 `enable-local-variables' is ignored if you run `normal-mode' interactively,
|
|
|
1560 or from Lisp without specifying the optional argument FIND-FILE;
|
|
|
1561 in that case, this function acts as if `enable-local-variables' were t."
|
|
428
|
1562 (interactive)
|
|
|
1563 (or find-file (funcall (or default-major-mode 'fundamental-mode)))
|
|
793
|
1564 (and (with-trapping-errors
|
|
|
1565 :operation "File mode specification"
|
|
|
1566 :class 'file-mode-spec
|
|
|
1567 :error-form nil
|
|
|
1568 (set-auto-mode)
|
|
|
1569 t)
|
|
|
1570 (with-trapping-errors
|
|
|
1571 :operation "File local-variables"
|
|
|
1572 :class 'local-variables
|
|
|
1573 :error-form nil
|
|
1333
|
1574 ;; FSF 21.2:
|
|
|
1575 ; (let ((enable-local-variables (or (not find-file)
|
|
|
1576 ; enable-local-variables)))
|
|
|
1577 ; (hack-local-variables))
|
|
793
|
1578 (hack-local-variables (not find-file)))))
|
|
428
|
1579
|
|
1333
|
1580 ;; END SYNC WITH FSF 21.2.
|
|
|
1581
|
|
1024
|
1582 ;; `auto-mode-alist' used to contain entries for modes in core and in packages.
|
|
|
1583 ;; The applicable entries are now located in the corresponding modes in
|
|
|
1584 ;; packages, the ones here are for core modes. Ditto for
|
|
|
1585 ;; `interpreter-mode-alist' below.
|
|
|
1586 ;; Per Abrahamsen suggested splitting auto-mode-alist to
|
|
428
|
1587 ;; several distinct variables such as, in order of precedence,
|
|
|
1588 ;; `user-auto-mode-alist' for users, `package-auto-mode-alist' for
|
|
|
1589 ;; packages and `auto-mode-alist' (which might also be called
|
|
|
1590 ;; `default-auto-mode-alist') for default stuff, such as some of the
|
|
|
1591 ;; entries below.
|
|
|
1592
|
|
|
1593 (defvar auto-mode-alist
|
|
|
1594 '(("\\.te?xt\\'" . text-mode)
|
|
|
1595 ("\\.el\\'" . emacs-lisp-mode)
|
|
|
1596 ("\\.c?l\\(?:i?sp\\)?\\'" . lisp-mode)
|
|
|
1597 ("\\.article\\'" . text-mode)
|
|
|
1598 ("\\.letter\\'" . text-mode)
|
|
|
1599 ;; Mailer puts message to be edited in /tmp/Re.... or Message
|
|
|
1600 ;; #### Unix-specific!
|
|
|
1601 ("\\`/tmp/Re" . text-mode)
|
|
|
1602 ("/Message[0-9]*\\'" . text-mode)
|
|
|
1603 ;; some news reader is reported to use this
|
|
|
1604 ("^/tmp/fol/" . text-mode)
|
|
|
1605 ;; .emacs following a directory delimiter in either Unix or
|
|
|
1606 ;; Windows syntax.
|
|
|
1607 ("[/\\][._].*emacs\\'" . emacs-lisp-mode)
|
|
|
1608 ("\\.ml\\'" . lisp-mode)
|
|
|
1609 )
|
|
|
1610 "Alist of filename patterns vs. corresponding major mode functions.
|
|
|
1611 Each element looks like (REGEXP . FUNCTION) or (REGEXP FUNCTION NON-NIL).
|
|
|
1612 \(NON-NIL stands for anything that is not nil; the value does not matter.)
|
|
|
1613 Visiting a file whose name matches REGEXP specifies FUNCTION as the
|
|
|
1614 mode function to use. FUNCTION will be called, unless it is nil.
|
|
|
1615
|
|
|
1616 If the element has the form (REGEXP FUNCTION NON-NIL), then after
|
|
|
1617 calling FUNCTION (if it's not nil), we delete the suffix that matched
|
|
|
1618 REGEXP and search the list again for another match.")
|
|
|
1619
|
|
|
1620 (defvar interpreter-mode-alist
|
|
1024
|
1621 '(("emacs" . emacs-lisp-mode))
|
|
428
|
1622 "Alist mapping interpreter names to major modes.
|
|
|
1623 This alist is used to guess the major mode of a file based on the
|
|
|
1624 contents of the first line. This line often contains something like:
|
|
|
1625 #!/bin/sh
|
|
|
1626 but may contain something more imaginative like
|
|
|
1627 #! /bin/env python
|
|
|
1628 or
|
|
|
1629 eval 'exec perl -w -S $0 ${1+\"$@\"}'.
|
|
|
1630
|
|
|
1631 Each alist element looks like (INTERPRETER . MODE).
|
|
|
1632 The car of each element is a regular expression which is compared
|
|
|
1633 with the name of the interpreter specified in the first line.
|
|
|
1634 If it matches, mode MODE is selected.")
|
|
|
1635
|
|
|
1636 (defvar binary-file-regexps
|
|
444
|
1637 '("\\.\\(?:bz2\\|elc\\|g\\(if\\|z\\)\\|jp\\(eg\\|g\\)\\|png\\|t\\(ar\\|gz\\|iff\\)\\|[Zo]\\)\\'")
|
|
428
|
1638 "List of regexps of filenames containing binary (non-text) data.")
|
|
|
1639
|
|
|
1640 ; (eval-when-compile
|
|
|
1641 ; (require 'regexp-opt)
|
|
|
1642 ; (list
|
|
|
1643 ; (format "\\.\\(?:%s\\)\\'"
|
|
|
1644 ; (regexp-opt
|
|
|
1645 ; '("tar"
|
|
|
1646 ; "tgz"
|
|
|
1647 ; "gz"
|
|
|
1648 ; "bz2"
|
|
|
1649 ; "Z"
|
|
|
1650 ; "o"
|
|
|
1651 ; "elc"
|
|
|
1652 ; "png"
|
|
|
1653 ; "gif"
|
|
|
1654 ; "tiff"
|
|
|
1655 ; "jpg"
|
|
|
1656 ; "jpeg"))))))
|
|
444
|
1657
|
|
428
|
1658 (defvar inhibit-first-line-modes-regexps
|
|
444
|
1659 binary-file-regexps
|
|
428
|
1660 "List of regexps; if one matches a file name, don't look for `-*-'.")
|
|
|
1661
|
|
|
1662 (defvar inhibit-first-line-modes-suffixes nil
|
|
|
1663 "List of regexps for what to ignore, for `inhibit-first-line-modes-regexps'.
|
|
|
1664 When checking `inhibit-first-line-modes-regexps', we first discard
|
|
|
1665 from the end of the file name anything that matches one of these regexps.")
|
|
|
1666
|
|
1333
|
1667 ;; Junk from FSF 21.2. Unnecessary in XEmacs, since `interpreter-mode-alist'
|
|
|
1668 ;; can have regexps.
|
|
|
1669 ; (defvar auto-mode-interpreter-regexp
|
|
|
1670 ; "#![ \t]?\\([^ \t\n]*\
|
|
|
1671 ; /bin/env[ \t]\\)?\\([^ \t\n]+\\)"
|
|
|
1672 ; "Regular expression matching interpreters, for file mode determination.
|
|
|
1673 ; This regular expression is matched against the first line of a file
|
|
|
1674 ; to determine the file's mode in `set-auto-mode' when Emacs can't deduce
|
|
|
1675 ; a mode from the file's name. If it matches, the file is assumed to
|
|
|
1676 ; be interpreted by the interpreter matched by the second group of the
|
|
|
1677 ; regular expression. The mode is then determined as the mode associated
|
|
|
1678 ; with that interpreter in `interpreter-mode-alist'.")
|
|
|
1679
|
|
428
|
1680 (defvar user-init-file
|
|
|
1681 nil ; set by command-line
|
|
|
1682 "File name including directory of user's initialization file.")
|
|
|
1683
|
|
|
1684 (defun set-auto-mode (&optional just-from-file-name)
|
|
|
1685 "Select major mode appropriate for current buffer.
|
|
|
1686 This checks for a -*- mode tag in the buffer's text,
|
|
|
1687 compares the filename against the entries in `auto-mode-alist',
|
|
|
1688 or checks the interpreter that runs this file against
|
|
|
1689 `interpreter-mode-alist'.
|
|
|
1690
|
|
|
1691 It does not check for the `mode:' local variable in the
|
|
|
1692 Local Variables section of the file; for that, use `hack-local-variables'.
|
|
|
1693
|
|
|
1694 If `enable-local-variables' is nil, this function does not check for a
|
|
|
1695 -*- mode tag.
|
|
|
1696
|
|
|
1697 If the optional argument JUST-FROM-FILE-NAME is non-nil,
|
|
|
1698 then we do not set anything but the major mode,
|
|
|
1699 and we don't even do that unless it would come from the file name."
|
|
|
1700 (save-excursion
|
|
|
1701 ;; Look for -*-MODENAME-*- or -*- ... mode: MODENAME; ... -*-
|
|
|
1702 ;; Do this by calling the hack-local-variables helper to avoid redundancy.
|
|
|
1703 ;; We bind enable-local-variables to nil this time because we're going to
|
|
|
1704 ;; call hack-local-variables-prop-line again later, "for real." Note that
|
|
|
1705 ;; this temporary binding does not prevent hack-local-variables-prop-line
|
|
|
1706 ;; from setting the major mode.
|
|
|
1707 (or (and enable-local-variables
|
|
|
1708 (let ((enable-local-variables nil))
|
|
|
1709 (hack-local-variables-prop-line nil))
|
|
|
1710 )
|
|
|
1711 ;; It's not in the -*- line, so check the auto-mode-alist, unless
|
|
|
1712 ;; this buffer isn't associated with a file.
|
|
|
1713 (null buffer-file-name)
|
|
|
1714 (let ((name (file-name-sans-versions buffer-file-name))
|
|
|
1715 (keep-going t))
|
|
|
1716 (while keep-going
|
|
|
1717 (setq keep-going nil)
|
|
|
1718 (let ((alist auto-mode-alist)
|
|
|
1719 (mode nil))
|
|
440
|
1720
|
|
428
|
1721 ;; Find first matching alist entry.
|
|
440
|
1722
|
|
|
1723 ;; #### This is incorrect. In NT, case sensitivity is a volume
|
|
|
1724 ;; property. For instance, NFS mounts *are* case sensitive.
|
|
|
1725 ;; Need internal function (file-name-case-sensitive f), F
|
|
|
1726 ;; being file or directory name. - kkm
|
|
428
|
1727 (let ((case-fold-search
|
|
440
|
1728 (eq system-type 'windows-nt)))
|
|
428
|
1729 (while (and (not mode) alist)
|
|
|
1730 (if (string-match (car (car alist)) name)
|
|
|
1731 (if (and (consp (cdr (car alist)))
|
|
|
1732 (nth 2 (car alist)))
|
|
|
1733 (progn
|
|
|
1734 (setq mode (car (cdr (car alist)))
|
|
|
1735 name (substring name 0 (match-beginning 0))
|
|
|
1736 keep-going t))
|
|
|
1737 (setq mode (cdr (car alist))
|
|
|
1738 keep-going nil)))
|
|
|
1739 (setq alist (cdr alist))))
|
|
|
1740 (unless just-from-file-name
|
|
|
1741 ;; If we can't deduce a mode from the file name,
|
|
|
1742 ;; look for an interpreter specified in the first line.
|
|
|
1743 (if (and (null mode)
|
|
|
1744 (save-excursion ; XEmacs
|
|
|
1745 (goto-char (point-min))
|
|
|
1746 (looking-at "#!")))
|
|
|
1747 (let ((firstline
|
|
|
1748 (buffer-substring
|
|
|
1749 (point-min)
|
|
|
1750 (save-excursion
|
|
|
1751 (goto-char (point-min)) (end-of-line) (point)))))
|
|
|
1752 (setq alist interpreter-mode-alist)
|
|
|
1753 (while alist
|
|
|
1754 (if (string-match (car (car alist)) firstline)
|
|
|
1755 (progn
|
|
|
1756 (setq mode (cdr (car alist)))
|
|
|
1757 (setq alist nil))
|
|
|
1758 (setq alist (cdr alist)))))))
|
|
|
1759 (if mode
|
|
|
1760 (if (not (fboundp mode))
|
|
|
1761 (let ((name (package-get-package-provider mode)))
|
|
|
1762 (if name
|
|
|
1763 (message "Mode %s is not installed. Download package %s" mode name)
|
|
|
1764 (message "Mode %s either doesn't exist or is not a known package" mode))
|
|
|
1765 (sit-for 2)
|
|
|
1766 (error "%s" mode))
|
|
|
1767 (unless (and just-from-file-name
|
|
|
1768 (or
|
|
|
1769 ;; Don't reinvoke major mode.
|
|
|
1770 (eq mode major-mode)
|
|
|
1771 ;; Don't lose on minor modes.
|
|
|
1772 (assq mode minor-mode-alist)))
|
|
|
1773 (funcall mode))))))))))
|
|
|
1774
|
|
|
1775 (defvar hack-local-variables-hook nil
|
|
|
1776 "Normal hook run after processing a file's local variables specs.
|
|
|
1777 Major modes can use this to examine user-specified local variables
|
|
|
1778 in order to initialize other data structure based on them.
|
|
|
1779
|
|
|
1780 This hook runs even if there were no local variables or if their
|
|
|
1781 evaluation was suppressed. See also `enable-local-variables' and
|
|
|
1782 `enable-local-eval'.")
|
|
|
1783
|
|
|
1784 (defun hack-local-variables (&optional force)
|
|
|
1785 "Parse, and bind or evaluate as appropriate, any local variables
|
|
|
1786 for current buffer."
|
|
|
1787 ;; Don't look for -*- if this file name matches any
|
|
|
1788 ;; of the regexps in inhibit-first-line-modes-regexps.
|
|
|
1789 (if (or (null buffer-file-name) ; don't lose if buffer has no file!
|
|
|
1790 (not (let ((temp inhibit-first-line-modes-regexps)
|
|
|
1791 (name (if buffer-file-name
|
|
|
1792 (file-name-sans-versions buffer-file-name)
|
|
|
1793 (buffer-name))))
|
|
|
1794 (while (let ((sufs inhibit-first-line-modes-suffixes))
|
|
|
1795 (while (and sufs (not
|
|
|
1796 (string-match (car sufs) name)))
|
|
|
1797 (setq sufs (cdr sufs)))
|
|
|
1798 sufs)
|
|
|
1799 (setq name (substring name 0 (match-beginning 0))))
|
|
|
1800 (while (and temp
|
|
|
1801 (not (string-match (car temp) name)))
|
|
|
1802 (setq temp (cdr temp))
|
|
|
1803 temp))))
|
|
|
1804 (progn
|
|
|
1805 ;; Look for variables in the -*- line.
|
|
|
1806 (hack-local-variables-prop-line force)
|
|
|
1807 ;; Look for "Local variables:" block in last page.
|
|
|
1808 (hack-local-variables-last-page force)))
|
|
|
1809 (run-hooks 'hack-local-variables-hook))
|
|
|
1810
|
|
|
1811 ;;; Local variables may be specified in the last page of the file (within 3k
|
|
|
1812 ;;; from the end of the file and after the last ^L) in the form
|
|
|
1813 ;;;
|
|
|
1814 ;;; Local variables:
|
|
|
1815 ;;; variable-name: variable-value
|
|
|
1816 ;;; end:
|
|
|
1817 ;;;
|
|
|
1818 ;;; The lines may begin with a common prefix, like ";;; " in the above
|
|
|
1819 ;;; example. They may also have a common suffix (" */" for example). In
|
|
|
1820 ;;; this form, the local variable "mode" can be used to change the major
|
|
|
1821 ;;; mode, and the local variable "eval" can be used to evaluate an arbitrary
|
|
|
1822 ;;; form.
|
|
|
1823 ;;;
|
|
|
1824 ;;; Local variables may also be specified in the first line of the file.
|
|
|
1825 ;;; Embedded in this line are a pair of "-*-" sequences. What lies between
|
|
|
1826 ;;; them are variable-name/variable-value pairs, like:
|
|
|
1827 ;;;
|
|
|
1828 ;;; -*- mode: emacs-lisp -*-
|
|
|
1829 ;;; or -*- mode: postscript; version-control: never -*-
|
|
|
1830 ;;; or -*- tags-file-name: "/foo/bar/TAGS" -*-
|
|
|
1831 ;;;
|
|
|
1832 ;;; The local variable "eval" is not used with this form. For hysterical
|
|
|
1833 ;;; reasons, the syntax "-*- modename -*-" is allowed as well.
|
|
|
1834 ;;;
|
|
|
1835
|
|
|
1836 (defun hack-local-variables-p (modeline)
|
|
|
1837 (or (eq enable-local-variables t)
|
|
|
1838 (and enable-local-variables
|
|
|
1839 (save-window-excursion
|
|
|
1840 (condition-case nil
|
|
|
1841 (switch-to-buffer (current-buffer))
|
|
|
1842 (error
|
|
|
1843 ;; If we fail to switch in the selected window,
|
|
|
1844 ;; it is probably a minibuffer.
|
|
|
1845 ;; So try another window.
|
|
|
1846 (condition-case nil
|
|
|
1847 (switch-to-buffer-other-window (current-buffer))
|
|
|
1848 (error
|
|
|
1849 (switch-to-buffer-other-frame (current-buffer))))))
|
|
|
1850 (or modeline (save-excursion
|
|
|
1851 (beginning-of-line)
|
|
|
1852 (set-window-start (selected-window) (point))))
|
|
|
1853 (y-or-n-p (format
|
|
|
1854 "Set local variables as specified %s of %s? "
|
|
|
1855 (if modeline "in -*- line" "at end")
|
|
|
1856 (if buffer-file-name
|
|
|
1857 (file-name-nondirectory buffer-file-name)
|
|
|
1858 (concat "buffer " (buffer-name)))))))))
|
|
|
1859
|
|
|
1860 (defun hack-local-variables-last-page (&optional force)
|
|
|
1861 ;; Set local variables set in the "Local Variables:" block of the last page.
|
|
|
1862 (save-excursion
|
|
|
1863 (goto-char (point-max))
|
|
|
1864 (search-backward "\n\^L" (max (- (point-max) 3000) (point-min)) 'move)
|
|
|
1865 (if (let ((case-fold-search t))
|
|
|
1866 (and (search-forward "Local Variables:" nil t)
|
|
|
1867 (or force
|
|
|
1868 (hack-local-variables-p nil))))
|
|
|
1869 (let ((continue t)
|
|
444
|
1870 prefix prefixlen suffix start
|
|
428
|
1871 (enable-local-eval enable-local-eval))
|
|
|
1872 ;; The prefix is what comes before "local variables:" in its line.
|
|
|
1873 ;; The suffix is what comes after "local variables:" in its line.
|
|
|
1874 (skip-chars-forward " \t")
|
|
|
1875 (or (eolp)
|
|
|
1876 (setq suffix (buffer-substring (point)
|
|
|
1877 (progn (end-of-line) (point)))))
|
|
|
1878 (goto-char (match-beginning 0))
|
|
|
1879 (or (bolp)
|
|
|
1880 (setq prefix
|
|
|
1881 (buffer-substring (point)
|
|
|
1882 (progn (beginning-of-line) (point)))))
|
|
|
1883 (if prefix (setq prefixlen (length prefix)
|
|
|
1884 prefix (regexp-quote prefix)))
|
|
|
1885 (if suffix (setq suffix (concat (regexp-quote suffix) "$")))
|
|
|
1886 (while continue
|
|
|
1887 ;; Look at next local variable spec.
|
|
|
1888 (if selective-display (re-search-forward "[\n\C-m]")
|
|
|
1889 (forward-line 1))
|
|
|
1890 ;; Skip the prefix, if any.
|
|
|
1891 (if prefix
|
|
|
1892 (if (looking-at prefix)
|
|
|
1893 (forward-char prefixlen)
|
|
|
1894 (error "Local variables entry is missing the prefix")))
|
|
|
1895 ;; Find the variable name; strip whitespace.
|
|
|
1896 (skip-chars-forward " \t")
|
|
444
|
1897 (setq start (point))
|
|
428
|
1898 (skip-chars-forward "^:\n")
|
|
|
1899 (if (eolp) (error "Missing colon in local variables entry"))
|
|
|
1900 (skip-chars-backward " \t")
|
|
444
|
1901 (let* ((str (buffer-substring start (point)))
|
|
428
|
1902 (var (read str))
|
|
|
1903 val)
|
|
|
1904 ;; Setting variable named "end" means end of list.
|
|
801
|
1905 (if (equalp str "end")
|
|
428
|
1906 (setq continue nil)
|
|
|
1907 ;; Otherwise read the variable value.
|
|
|
1908 (skip-chars-forward "^:")
|
|
|
1909 (forward-char 1)
|
|
|
1910 (setq val (read (current-buffer)))
|
|
|
1911 (skip-chars-backward "\n")
|
|
|
1912 (skip-chars-forward " \t")
|
|
|
1913 (or (if suffix (looking-at suffix) (eolp))
|
|
|
1914 (error "Local variables entry is terminated incorrectly"))
|
|
|
1915 ;; Set the variable. "Variables" mode and eval are funny.
|
|
|
1916 (hack-one-local-variable var val))))))))
|
|
|
1917
|
|
|
1918 ;; jwz - New Version 20.1/19.15
|
|
|
1919 (defun hack-local-variables-prop-line (&optional force)
|
|
|
1920 ;; Set local variables specified in the -*- line.
|
|
|
1921 ;; Returns t if mode was set.
|
|
|
1922 (let ((result nil))
|
|
|
1923 (save-excursion
|
|
|
1924 (goto-char (point-min))
|
|
|
1925 (skip-chars-forward " \t\n\r")
|
|
|
1926 (let ((end (save-excursion
|
|
|
1927 ;; If the file begins with "#!"
|
|
|
1928 ;; (un*x exec interpreter magic), look
|
|
|
1929 ;; for mode frobs in the first two
|
|
|
1930 ;; lines. You cannot necessarily
|
|
|
1931 ;; put them in the first line of
|
|
|
1932 ;; such a file without screwing up
|
|
|
1933 ;; the interpreter invocation.
|
|
|
1934 (end-of-line (and (looking-at "^#!") 2))
|
|
|
1935 (point))))
|
|
|
1936 ;; Parse the -*- line into the `result' alist.
|
|
|
1937 (cond ((not (search-forward "-*-" end t))
|
|
|
1938 ;; doesn't have one.
|
|
|
1939 (setq force t))
|
|
442
|
1940 ((looking-at "[ \t]*\\([^ \t\n\r:;]+?\\)\\([ \t]*-\\*-\\)")
|
|
428
|
1941 ;; Antiquated form: "-*- ModeName -*-".
|
|
|
1942 (setq result
|
|
|
1943 (list (cons 'mode
|
|
|
1944 (intern (buffer-substring
|
|
|
1945 (match-beginning 1)
|
|
|
1946 (match-end 1)))))
|
|
|
1947 ))
|
|
|
1948 (t
|
|
|
1949 ;; Usual form: '-*-' [ <variable> ':' <value> ';' ]* '-*-'
|
|
|
1950 ;; (last ";" is optional).
|
|
|
1951 (save-excursion
|
|
|
1952 (if (search-forward "-*-" end t)
|
|
|
1953 (setq end (- (point) 3))
|
|
|
1954 (error "-*- not terminated before end of line")))
|
|
|
1955 (while (< (point) end)
|
|
|
1956 (or (looking-at "[ \t]*\\([^ \t\n:]+\\)[ \t]*:[ \t]*")
|
|
|
1957 (error "malformed -*- line"))
|
|
|
1958 (goto-char (match-end 0))
|
|
|
1959 ;; There used to be a downcase here,
|
|
|
1960 ;; but the manual didn't say so,
|
|
|
1961 ;; and people want to set var names that aren't all lc.
|
|
|
1962 (let ((key (intern (buffer-substring
|
|
|
1963 (match-beginning 1)
|
|
|
1964 (match-end 1))))
|
|
|
1965 (val (save-restriction
|
|
|
1966 (narrow-to-region (point) end)
|
|
|
1967 (read (current-buffer)))))
|
|
|
1968 ;; Case sensitivity! Icepicks in my forehead!
|
|
801
|
1969 (if (equalp (symbol-name key) "mode")
|
|
428
|
1970 (setq key 'mode))
|
|
|
1971 (setq result (cons (cons key val) result))
|
|
|
1972 (skip-chars-forward " \t;")))
|
|
|
1973 (setq result (nreverse result))))))
|
|
|
1974
|
|
|
1975 (let ((set-any-p (or force
|
|
|
1976 ;; It's OK to force null specifications.
|
|
|
1977 (null result)
|
|
|
1978 ;; It's OK to force mode-only specifications.
|
|
|
1979 (let ((remaining result)
|
|
|
1980 (mode-specs-only t))
|
|
|
1981 (while remaining
|
|
|
1982 (if (eq (car (car remaining)) 'mode)
|
|
|
1983 (setq remaining (cdr remaining))
|
|
|
1984 ;; Otherwise, we have a real local.
|
|
|
1985 (setq mode-specs-only nil
|
|
|
1986 remaining nil))
|
|
|
1987 )
|
|
|
1988 mode-specs-only)
|
|
|
1989 ;; Otherwise, check.
|
|
|
1990 (hack-local-variables-p t)))
|
|
|
1991 (mode-p nil))
|
|
|
1992 (while result
|
|
|
1993 (let ((key (car (car result)))
|
|
|
1994 (val (cdr (car result))))
|
|
|
1995 (cond ((eq key 'mode)
|
|
|
1996 (setq mode-p t)
|
|
|
1997 (let ((mode (intern (concat (downcase (symbol-name val))
|
|
|
1998 "-mode"))))
|
|
|
1999 ;; Without this guard, `normal-mode' would potentially run
|
|
|
2000 ;; the major mode function twice: once via `set-auto-mode'
|
|
|
2001 ;; and once via `hack-local-variables'.
|
|
|
2002 (if (not (eq mode major-mode))
|
|
|
2003 (funcall mode))
|
|
|
2004 ))
|
|
|
2005 (set-any-p
|
|
|
2006 (hack-one-local-variable key val))
|
|
|
2007 (t
|
|
|
2008 nil)))
|
|
|
2009 (setq result (cdr result)))
|
|
|
2010 mode-p)))
|
|
|
2011
|
|
1333
|
2012 ;; BEGIN SYNC WITH FSF 21.2.
|
|
|
2013
|
|
428
|
2014 (defconst ignored-local-variables
|
|
|
2015 (list 'enable-local-eval)
|
|
|
2016 "Variables to be ignored in a file's local variable spec.")
|
|
|
2017
|
|
|
2018 ;; Get confirmation before setting these variables as locals in a file.
|
|
|
2019 (put 'debugger 'risky-local-variable t)
|
|
|
2020 (put 'enable-local-eval 'risky-local-variable t)
|
|
|
2021 (put 'ignored-local-variables 'risky-local-variable t)
|
|
|
2022 (put 'eval 'risky-local-variable t)
|
|
|
2023 (put 'file-name-handler-alist 'risky-local-variable t)
|
|
|
2024 (put 'minor-mode-map-alist 'risky-local-variable t)
|
|
|
2025 (put 'after-load-alist 'risky-local-variable t)
|
|
|
2026 (put 'buffer-file-name 'risky-local-variable t)
|
|
|
2027 (put 'buffer-auto-save-file-name 'risky-local-variable t)
|
|
|
2028 (put 'buffer-file-truename 'risky-local-variable t)
|
|
|
2029 (put 'exec-path 'risky-local-variable t)
|
|
|
2030 (put 'load-path 'risky-local-variable t)
|
|
|
2031 (put 'exec-directory 'risky-local-variable t)
|
|
|
2032 (put 'process-environment 'risky-local-variable t)
|
|
1333
|
2033 (put 'dabbrev-case-fold-search 'risky-local-variable t)
|
|
|
2034 (put 'dabbrev-case-replace 'risky-local-variable t)
|
|
428
|
2035 ;; Don't wait for outline.el to be loaded, for the sake of outline-minor-mode.
|
|
|
2036 (put 'outline-level 'risky-local-variable t)
|
|
|
2037 (put 'rmail-output-file-alist 'risky-local-variable t)
|
|
|
2038
|
|
|
2039 ;; This one is safe because the user gets to check it before it is used.
|
|
|
2040 (put 'compile-command 'safe-local-variable t)
|
|
|
2041
|
|
1333
|
2042 (defun hack-one-local-variable-quotep (exp)
|
|
|
2043 (and (consp exp) (eq (car exp) 'quote) (consp (cdr exp))))
|
|
|
2044
|
|
428
|
2045 (defun hack-one-local-variable (var val)
|
|
1333
|
2046 "\"Set\" one variable in a local variables spec.
|
|
|
2047 A few variable names are treated specially."
|
|
428
|
2048 (cond ((eq var 'mode)
|
|
|
2049 (funcall (intern (concat (downcase (symbol-name val))
|
|
|
2050 "-mode"))))
|
|
1333
|
2051 ((eq var 'coding)
|
|
|
2052 ;; We have already handled coding: tag in set-auto-coding.
|
|
|
2053 nil)
|
|
428
|
2054 ((memq var ignored-local-variables)
|
|
|
2055 nil)
|
|
|
2056 ;; "Setting" eval means either eval it or do nothing.
|
|
|
2057 ;; Likewise for setting hook variables.
|
|
|
2058 ((or (get var 'risky-local-variable)
|
|
|
2059 (and
|
|
1333
|
2060 (string-match "-hooks?$\\|-functions?$\\|-forms?$\\|-program$\\|-command$\\|-predicate$"
|
|
428
|
2061 (symbol-name var))
|
|
|
2062 (not (get var 'safe-local-variable))))
|
|
1333
|
2063 ;; Permit evalling a put of a harmless property.
|
|
|
2064 ;; if the args do nothing tricky.
|
|
|
2065 (if (or (and (eq var 'eval)
|
|
|
2066 (consp val)
|
|
|
2067 (eq (car val) 'put)
|
|
|
2068 (hack-one-local-variable-quotep (nth 1 val))
|
|
|
2069 (hack-one-local-variable-quotep (nth 2 val))
|
|
|
2070 ;; Only allow safe values of lisp-indent-hook;
|
|
|
2071 ;; not functions.
|
|
|
2072 (or (numberp (nth 3 val))
|
|
|
2073 (equal (nth 3 val) ''defun))
|
|
|
2074 (memq (nth 1 (nth 2 val))
|
|
|
2075 '(lisp-indent-hook)))
|
|
|
2076 ;; Permit eval if not root and user says ok.
|
|
|
2077 (and (not (zerop (user-uid)))
|
|
|
2078 (or (eq enable-local-eval t)
|
|
|
2079 (and enable-local-eval
|
|
|
2080 (save-window-excursion
|
|
|
2081 (switch-to-buffer (current-buffer))
|
|
|
2082 (save-excursion
|
|
|
2083 (beginning-of-line)
|
|
|
2084 (set-window-start (selected-window) (point)))
|
|
|
2085 (setq enable-local-eval
|
|
|
2086 (y-or-n-p (format "Process `eval' or hook local variables in %s? "
|
|
|
2087 (if buffer-file-name
|
|
|
2088 (concat "file " (file-name-nondirectory buffer-file-name))
|
|
|
2089 (concat "buffer " (buffer-name)))))))))))
|
|
428
|
2090 (if (eq var 'eval)
|
|
|
2091 (save-excursion (eval val))
|
|
|
2092 (make-local-variable var)
|
|
|
2093 (set var val))
|
|
1333
|
2094 (message "Ignoring `eval:' in the local variables list")))
|
|
428
|
2095 ;; Ordinary variable, really set it.
|
|
|
2096 (t (make-local-variable var)
|
|
|
2097 (set var val))))
|
|
502
|
2098
|
|
|
2099 (defun find-coding-system-magic-cookie-in-file (file)
|
|
|
2100 "Look for the coding-system magic cookie in FILE.
|
|
|
2101 The coding-system magic cookie is either the local variable specification
|
|
|
2102 -*- ... coding: ... -*- on the first line, or the exact string
|
|
|
2103 \";;;###coding system: \" somewhere within the first 3000 characters
|
|
|
2104 of the file. If found, the coding system name (as a string) is returned;
|
|
|
2105 otherwise nil is returned. Note that it is extremely unlikely that
|
|
|
2106 either such string would occur coincidentally as the result of encoding
|
|
|
2107 some characters in a non-ASCII charset, and that the spaces make it
|
|
|
2108 even less likely since the space character is not a valid octet in any
|
|
|
2109 ISO 2022 encoding of most non-ASCII charsets."
|
|
|
2110 (save-excursion
|
|
|
2111 (with-temp-buffer
|
|
|
2112 (let ((coding-system-for-read 'raw-text))
|
|
|
2113 (insert-file-contents file nil 1 3001))
|
|
|
2114 (goto-char (point-min))
|
|
|
2115 (or (and (looking-at
|
|
|
2116 "^[^\n]*-\\*-[^\n]*coding: \\([^ \t\n;]+\\)[^\n]*-\\*-")
|
|
|
2117 (buffer-substring (match-beginning 1) (match-end 1)))
|
|
|
2118 ;; (save-excursion
|
|
|
2119 ;; (let (start end)
|
|
|
2120 ;; (and (re-search-forward "^;+[ \t]*Local Variables:" nil t)
|
|
|
2121 ;; (setq start (match-end 0))
|
|
|
2122 ;; (re-search-forward "\n;+[ \t]*End:")
|
|
|
2123 ;; (setq end (match-beginning 0))
|
|
|
2124 ;; (save-restriction
|
|
|
2125 ;; (narrow-to-region start end)
|
|
|
2126 ;; (goto-char start)
|
|
|
2127 ;; (re-search-forward "^;;; coding: \\([^\n]+\\)$" nil t)
|
|
|
2128 ;; )
|
|
|
2129 ;; (let ((codesys
|
|
|
2130 ;; (intern (buffer-substring
|
|
|
2131 ;; (match-beginning 1)(match-end 1)))))
|
|
|
2132 ;; (if (find-coding-system codesys) codesys))
|
|
|
2133 ;; )))
|
|
|
2134 (let ((case-fold-search nil))
|
|
|
2135 (if (search-forward
|
|
|
2136 ";;;###coding system: " (+ (point-min) 3000) t)
|
|
|
2137 (let ((start (point))
|
|
|
2138 (end (progn
|
|
|
2139 (skip-chars-forward "^ \t\n\r")
|
|
|
2140 (point))))
|
|
|
2141 (if (> end start) (buffer-substring start end))
|
|
|
2142 )))
|
|
|
2143 ))))
|
|
428
|
2144
|
|
1333
|
2145
|
|
428
|
2146 (defcustom change-major-mode-with-file-name t
|
|
|
2147 "*Non-nil means \\[write-file] should set the major mode from the file name.
|
|
|
2148 However, the mode will not be changed if
|
|
|
2149 \(1) a local variables list or the `-*-' line specifies a major mode, or
|
|
|
2150 \(2) the current major mode is a \"special\" mode,
|
|
|
2151 \ not suitable for ordinary files, or
|
|
|
2152 \(3) the new file name does not particularly specify any mode."
|
|
|
2153 :type 'boolean
|
|
|
2154 :group 'editing-basics)
|
|
|
2155
|
|
|
2156 (defun set-visited-file-name (filename &optional no-query along-with-file)
|
|
|
2157 "Change name of file visited in current buffer to FILENAME.
|
|
|
2158 The next time the buffer is saved it will go in the newly specified file.
|
|
|
2159 nil or empty string as argument means make buffer not be visiting any file.
|
|
|
2160 Remember to delete the initial contents of the minibuffer
|
|
|
2161 if you wish to pass an empty string as the argument.
|
|
|
2162
|
|
|
2163 The optional second argument NO-QUERY, if non-nil, inhibits asking for
|
|
|
2164 confirmation in the case where another buffer is already visiting FILENAME.
|
|
|
2165
|
|
|
2166 The optional third argument ALONG-WITH-FILE, if non-nil, means that
|
|
|
2167 the old visited file has been renamed to the new name FILENAME."
|
|
|
2168 (interactive "FSet visited file name: ")
|
|
|
2169 (if (buffer-base-buffer)
|
|
|
2170 (error "An indirect buffer cannot visit a file"))
|
|
|
2171 (let (truename)
|
|
|
2172 (if filename
|
|
|
2173 (setq filename
|
|
|
2174 (if (string-equal filename "")
|
|
|
2175 nil
|
|
|
2176 (expand-file-name filename))))
|
|
|
2177 (if filename
|
|
|
2178 (progn
|
|
|
2179 (setq truename (file-truename filename))
|
|
|
2180 ;; #### Do we need to check if truename is non-nil?
|
|
|
2181 (if find-file-use-truenames
|
|
|
2182 (setq filename truename))))
|
|
|
2183 (let ((buffer (and filename (find-buffer-visiting filename))))
|
|
|
2184 (and buffer (not (eq buffer (current-buffer)))
|
|
|
2185 (not no-query)
|
|
|
2186 (not (y-or-n-p (message "A buffer is visiting %s; proceed? "
|
|
|
2187 filename)))
|
|
|
2188 (error "Aborted")))
|
|
|
2189 (or (equal filename buffer-file-name)
|
|
|
2190 (progn
|
|
|
2191 (and filename (lock-buffer filename))
|
|
|
2192 (unlock-buffer)))
|
|
|
2193 (setq buffer-file-name filename)
|
|
|
2194 (if filename ; make buffer name reflect filename.
|
|
|
2195 (let ((new-name (file-name-nondirectory buffer-file-name)))
|
|
|
2196 (if (string= new-name "")
|
|
|
2197 (error "Empty file name"))
|
|
|
2198 (setq default-directory (file-name-directory buffer-file-name))
|
|
|
2199 (or (string= new-name (buffer-name))
|
|
|
2200 (rename-buffer new-name t))))
|
|
|
2201 (setq buffer-backed-up nil)
|
|
|
2202 (or along-with-file
|
|
|
2203 (clear-visited-file-modtime))
|
|
|
2204 (compute-buffer-file-truename) ; insert-file-contents does this too.
|
|
|
2205 ; ;; Abbreviate the file names of the buffer.
|
|
|
2206 ; (if truename
|
|
|
2207 ; (progn
|
|
|
2208 ; (setq buffer-file-truename (abbreviate-file-name truename))
|
|
|
2209 ; (if find-file-visit-truename
|
|
|
2210 ; (setq buffer-file-name buffer-file-truename))))
|
|
|
2211 (setq buffer-file-number
|
|
|
2212 (if filename
|
|
|
2213 (nthcdr 10 (file-attributes buffer-file-name))
|
|
|
2214 nil)))
|
|
|
2215 ;; write-file-hooks is normally used for things like ftp-find-file
|
|
|
2216 ;; that visit things that are not local files as if they were files.
|
|
|
2217 ;; Changing to visit an ordinary local file instead should flush the hook.
|
|
|
2218 (kill-local-variable 'write-file-hooks)
|
|
|
2219 (kill-local-variable 'after-save-hook)
|
|
|
2220 (kill-local-variable 'local-write-file-hooks)
|
|
|
2221 (kill-local-variable 'write-file-data-hooks)
|
|
|
2222 (kill-local-variable 'revert-buffer-function)
|
|
|
2223 (kill-local-variable 'backup-inhibited)
|
|
|
2224 ;; If buffer was read-only because of version control,
|
|
|
2225 ;; that reason is gone now, so make it writable.
|
|
502
|
2226 (if-boundp 'vc-mode
|
|
|
2227 (progn
|
|
|
2228 (if vc-mode
|
|
|
2229 (setq buffer-read-only nil))
|
|
|
2230 (kill-local-variable 'vc-mode)))
|
|
428
|
2231 ;; Turn off backup files for certain file names.
|
|
|
2232 ;; Since this is a permanent local, the major mode won't eliminate it.
|
|
|
2233 (and buffer-file-name
|
|
|
2234 (not (funcall backup-enable-predicate buffer-file-name))
|
|
|
2235 (progn
|
|
|
2236 (make-local-variable 'backup-inhibited)
|
|
|
2237 (setq backup-inhibited t)))
|
|
|
2238 (let ((oauto buffer-auto-save-file-name))
|
|
|
2239 ;; If auto-save was not already on, turn it on if appropriate.
|
|
|
2240 (if (not buffer-auto-save-file-name)
|
|
|
2241 (and buffer-file-name auto-save-default
|
|
|
2242 (auto-save-mode t))
|
|
|
2243 ;; If auto save is on, start using a new name.
|
|
|
2244 ;; We deliberately don't rename or delete the old auto save
|
|
|
2245 ;; for the old visited file name. This is because perhaps
|
|
|
2246 ;; the user wants to save the new state and then compare with the
|
|
|
2247 ;; previous state from the auto save file.
|
|
|
2248 (setq buffer-auto-save-file-name
|
|
|
2249 (make-auto-save-file-name)))
|
|
|
2250 ;; Rename the old auto save file if any.
|
|
|
2251 (and oauto buffer-auto-save-file-name
|
|
|
2252 (file-exists-p oauto)
|
|
|
2253 (rename-file oauto buffer-auto-save-file-name t)))
|
|
|
2254 (if buffer-file-name
|
|
|
2255 (not along-with-file)
|
|
|
2256 (set-buffer-modified-p t))
|
|
|
2257 ;; Update the major mode, if the file name determines it.
|
|
|
2258 (condition-case nil
|
|
|
2259 ;; Don't change the mode if it is special.
|
|
|
2260 (or (not change-major-mode-with-file-name)
|
|
|
2261 (get major-mode 'mode-class)
|
|
|
2262 ;; Don't change the mode if the local variable list specifies it.
|
|
|
2263 (hack-local-variables t)
|
|
|
2264 (set-auto-mode t))
|
|
|
2265 (error nil))
|
|
1333
|
2266 ;; #### ?? not in FSF.
|
|
428
|
2267 (run-hooks 'after-set-visited-file-name-hooks))
|
|
|
2268
|
|
|
2269 (defun write-file (filename &optional confirm codesys)
|
|
|
2270 "Write current buffer into file FILENAME.
|
|
1333
|
2271 This makes the buffer visit that file, and marks it as not modified.
|
|
|
2272
|
|
|
2273 If you specify just a directory name as FILENAME, that means to use
|
|
|
2274 the default file name but in that directory. You can also yank
|
|
|
2275 the default file name into the minibuffer to edit it, using M-n.
|
|
|
2276
|
|
|
2277 If the buffer is not already visiting a file, the default file name
|
|
|
2278 for the output file is the buffer name.
|
|
|
2279
|
|
|
2280 If optional second arg CONFIRM is non-nil, this function
|
|
|
2281 asks for confirmation before overwriting an existing file.
|
|
|
2282 Interactively, this is always the case.
|
|
771
|
2283
|
|
|
2284 Optional third argument specifies the coding system to use when encoding
|
|
|
2285 the file. Interactively, with a prefix argument, you will be prompted for
|
|
|
2286 the coding system."
|
|
428
|
2287 ;; (interactive "FWrite file: ")
|
|
|
2288 (interactive
|
|
|
2289 (list (if buffer-file-name
|
|
|
2290 (read-file-name "Write file: "
|
|
|
2291 nil nil nil nil)
|
|
1333
|
2292 (read-file-name "Write file: " default-directory
|
|
|
2293 (expand-file-name
|
|
|
2294 (file-name-nondirectory (buffer-name))
|
|
|
2295 default-directory)
|
|
|
2296 nil nil))
|
|
428
|
2297 t
|
|
771
|
2298 (if current-prefix-arg (read-coding-system "Coding system: "))))
|
|
428
|
2299 (and (eq (current-buffer) mouse-grabbed-buffer)
|
|
|
2300 (error "Can't write minibuffer window"))
|
|
|
2301 (or (null filename) (string-equal filename "")
|
|
|
2302 (progn
|
|
|
2303 ;; If arg is just a directory,
|
|
1333
|
2304 ;; use the default file name, but in that directory.
|
|
|
2305 (if (file-directory-p filename)
|
|
428
|
2306 (setq filename (concat (file-name-as-directory filename)
|
|
1333
|
2307 (file-name-nondirectory
|
|
|
2308 (or buffer-file-name (buffer-name))))))
|
|
428
|
2309 (and confirm
|
|
|
2310 (file-exists-p filename)
|
|
|
2311 (or (y-or-n-p (format "File `%s' exists; overwrite? " filename))
|
|
|
2312 (error "Canceled")))
|
|
1333
|
2313 (set-visited-file-name filename (not confirm))))
|
|
428
|
2314 (set-buffer-modified-p t)
|
|
1333
|
2315 ;; Make buffer writable if file is writable.
|
|
|
2316 (and buffer-file-name
|
|
|
2317 (file-writable-p buffer-file-name)
|
|
|
2318 (setq buffer-read-only nil))
|
|
428
|
2319 (if codesys
|
|
|
2320 (let ((buffer-file-coding-system (get-coding-system codesys)))
|
|
|
2321 (save-buffer))
|
|
|
2322 (save-buffer)))
|
|
|
2323
|
|
1333
|
2324
|
|
428
|
2325 (defun backup-buffer ()
|
|
|
2326 "Make a backup of the disk file visited by the current buffer, if appropriate.
|
|
|
2327 This is normally done before saving the buffer the first time.
|
|
1333
|
2328 If the value is non-nil, it is the result of `file-modes' on the original
|
|
|
2329 file; this means that the caller, after saving the buffer, should change
|
|
|
2330 the modes of the new file to agree with the old modes.
|
|
|
2331
|
|
|
2332 A backup may be done by renaming or by copying; see documentation of
|
|
|
2333 variable `make-backup-files'. If it's done by renaming, then the file is
|
|
|
2334 no longer accessible under its old name."
|
|
428
|
2335 (if buffer-file-name
|
|
|
2336 (let ((handler (find-file-name-handler buffer-file-name 'backup-buffer)))
|
|
|
2337 (if handler
|
|
|
2338 (funcall handler 'backup-buffer)
|
|
|
2339 (if (and make-backup-files
|
|
|
2340 (not backup-inhibited)
|
|
|
2341 (not buffer-backed-up)
|
|
|
2342 (file-exists-p buffer-file-name)
|
|
|
2343 (memq (aref (elt (file-attributes buffer-file-name) 8) 0)
|
|
|
2344 '(?- ?l)))
|
|
|
2345 (let ((real-file-name buffer-file-name)
|
|
|
2346 backup-info backupname targets setmodes)
|
|
|
2347 ;; If specified name is a symbolic link, chase it to the target.
|
|
|
2348 ;; Thus we make the backups in the directory where the real file is.
|
|
|
2349 (setq real-file-name (file-chase-links real-file-name))
|
|
|
2350 (setq backup-info (find-backup-file-name real-file-name)
|
|
|
2351 backupname (car backup-info)
|
|
|
2352 targets (cdr backup-info))
|
|
|
2353 ;;; (if (file-directory-p buffer-file-name)
|
|
|
2354 ;;; (error "Cannot save buffer in directory %s" buffer-file-name))
|
|
|
2355 (if backup-info
|
|
|
2356 (condition-case ()
|
|
|
2357 (let ((delete-old-versions
|
|
|
2358 ;; If have old versions to maybe delete,
|
|
|
2359 ;; ask the user to confirm now, before doing anything.
|
|
440
|
2360 ;; But don't actually delete till later.
|
|
428
|
2361 (and targets
|
|
|
2362 (or (eq delete-old-versions t)
|
|
|
2363 (eq delete-old-versions nil))
|
|
|
2364 (or delete-old-versions
|
|
|
2365 (y-or-n-p (format "Delete excess backup versions of %s? "
|
|
|
2366 real-file-name))))))
|
|
|
2367 ;; Actually write the back up file.
|
|
|
2368 (condition-case ()
|
|
|
2369 (if (or file-precious-flag
|
|
|
2370 ; (file-symlink-p buffer-file-name)
|
|
|
2371 backup-by-copying
|
|
|
2372 (and backup-by-copying-when-linked
|
|
|
2373 (> (file-nlinks real-file-name) 1))
|
|
1333
|
2374 (and (or backup-by-copying-when-mismatch
|
|
|
2375 (integerp backup-by-copying-when-privileged-mismatch))
|
|
428
|
2376 (let ((attr (file-attributes real-file-name)))
|
|
1333
|
2377 (and (or backup-by-copying-when-mismatch
|
|
|
2378 (and (integerp (nth 2 attr))
|
|
|
2379 (integerp backup-by-copying-when-privileged-mismatch)
|
|
|
2380 (<= (nth 2 attr) backup-by-copying-when-privileged-mismatch)))
|
|
|
2381 (or (nth 9 attr)
|
|
|
2382 (not (file-ownership-preserved-p real-file-name)))))))
|
|
428
|
2383 (condition-case ()
|
|
|
2384 (copy-file real-file-name backupname t t)
|
|
|
2385 (file-error
|
|
|
2386 ;; If copying fails because file BACKUPNAME
|
|
|
2387 ;; is not writable, delete that file and try again.
|
|
|
2388 (if (and (file-exists-p backupname)
|
|
|
2389 (not (file-writable-p backupname)))
|
|
|
2390 (delete-file backupname))
|
|
|
2391 (copy-file real-file-name backupname t t)))
|
|
|
2392 ;; rename-file should delete old backup.
|
|
|
2393 (rename-file real-file-name backupname t)
|
|
|
2394 (setq setmodes (file-modes backupname)))
|
|
|
2395 (file-error
|
|
|
2396 ;; If trouble writing the backup, write it in ~.
|
|
464
|
2397 (setq backupname
|
|
|
2398 (expand-file-name
|
|
|
2399 (convert-standard-filename "~/%backup%~")))
|
|
1333
|
2400 (lwarn 'file 'alert "Cannot write backup file; backing up in %s"
|
|
|
2401 (file-name-nondirectory backupname))
|
|
428
|
2402 (sleep-for 1)
|
|
|
2403 (condition-case ()
|
|
|
2404 (copy-file real-file-name backupname t t)
|
|
|
2405 (file-error
|
|
|
2406 ;; If copying fails because file BACKUPNAME
|
|
|
2407 ;; is not writable, delete that file and try again.
|
|
|
2408 (if (and (file-exists-p backupname)
|
|
|
2409 (not (file-writable-p backupname)))
|
|
|
2410 (delete-file backupname))
|
|
|
2411 (copy-file real-file-name backupname t t)))))
|
|
|
2412 (setq buffer-backed-up t)
|
|
|
2413 ;; Now delete the old versions, if desired.
|
|
|
2414 (if delete-old-versions
|
|
|
2415 (while targets
|
|
|
2416 (ignore-file-errors (delete-file (car targets)))
|
|
|
2417 (setq targets (cdr targets))))
|
|
|
2418 setmodes)
|
|
|
2419 (file-error nil)))))))))
|
|
|
2420
|
|
|
2421 (defun file-name-sans-versions (name &optional keep-backup-version)
|
|
|
2422 "Return FILENAME sans backup versions or strings.
|
|
|
2423 This is a separate procedure so your site-init or startup file can
|
|
|
2424 redefine it.
|
|
|
2425 If the optional argument KEEP-BACKUP-VERSION is non-nil,
|
|
|
2426 we do not remove backup version numbers, only true file version numbers."
|
|
|
2427 (let ((handler (find-file-name-handler name 'file-name-sans-versions)))
|
|
|
2428 (if handler
|
|
|
2429 (funcall handler 'file-name-sans-versions name keep-backup-version)
|
|
|
2430 (substring name 0
|
|
|
2431 (if keep-backup-version
|
|
|
2432 (length name)
|
|
|
2433 (or (string-match "\\.~[0-9.]+~\\'" name)
|
|
|
2434 ;; XEmacs - VC uses extensions like ".~tagname~" or ".~1.1.5.2~"
|
|
|
2435 (let ((pos (string-match "\\.~\\([^.~ \t]+\\|[0-9.]+\\)~\\'" name)))
|
|
|
2436 (and pos
|
|
|
2437 ;; #### - is this filesystem check too paranoid?
|
|
|
2438 (file-exists-p (substring name 0 pos))
|
|
|
2439 pos))
|
|
|
2440 (string-match "~\\'" name)
|
|
|
2441 (length name)))))))
|
|
|
2442
|
|
|
2443 (defun file-ownership-preserved-p (file)
|
|
|
2444 "Return t if deleting FILE and rewriting it would preserve the owner."
|
|
|
2445 (let ((handler (find-file-name-handler file 'file-ownership-preserved-p)))
|
|
|
2446 (if handler
|
|
|
2447 (funcall handler 'file-ownership-preserved-p file)
|
|
|
2448 (let ((attributes (file-attributes file)))
|
|
|
2449 ;; Return t if the file doesn't exist, since it's true that no
|
|
|
2450 ;; information would be lost by an (attempted) delete and create.
|
|
|
2451 (or (null attributes)
|
|
|
2452 (= (nth 2 attributes) (user-uid)))))))
|
|
|
2453
|
|
|
2454 (defun file-name-sans-extension (filename)
|
|
|
2455 "Return FILENAME sans final \"extension\".
|
|
|
2456 The extension, in a file name, is the part that follows the last `.'."
|
|
|
2457 (save-match-data
|
|
|
2458 (let ((file (file-name-sans-versions (file-name-nondirectory filename)))
|
|
|
2459 directory)
|
|
|
2460 (if (string-match "\\.[^.]*\\'" file)
|
|
|
2461 (if (setq directory (file-name-directory filename))
|
|
|
2462 (expand-file-name (substring file 0 (match-beginning 0))
|
|
|
2463 directory)
|
|
|
2464 (substring file 0 (match-beginning 0)))
|
|
|
2465 filename))))
|
|
|
2466
|
|
|
2467 (defun file-name-extension (filename &optional period)
|
|
|
2468 "Return FILENAME's final \"extension\".
|
|
|
2469 The extension, in a file name, is the part that follows the last `.'.
|
|
|
2470 Return nil for extensionless file names such as `foo'.
|
|
|
2471 Return the empty string for file names such as `foo.'.
|
|
|
2472
|
|
|
2473 If PERIOD is non-nil, then the returned value includes the period
|
|
|
2474 that delimits the extension, and if FILENAME has no extension,
|
|
|
2475 the value is \"\"."
|
|
|
2476 (save-match-data
|
|
|
2477 (let ((file (file-name-sans-versions (file-name-nondirectory filename))))
|
|
|
2478 (if (string-match "\\.[^.]*\\'" file)
|
|
|
2479 (substring file (+ (match-beginning 0) (if period 0 1)))
|
|
|
2480 (if period
|
|
|
2481 "")))))
|
|
|
2482
|
|
1333
|
2483 (defcustom make-backup-file-name-function nil
|
|
|
2484 "A function to use instead of the default `make-backup-file-name'.
|
|
|
2485 A value of nil gives the default `make-backup-file-name' behaviour.
|
|
|
2486
|
|
|
2487 This could be buffer-local to do something special for specific
|
|
|
2488 files. If you define it, you may need to change `backup-file-name-p'
|
|
|
2489 and `file-name-sans-versions' too.
|
|
|
2490
|
|
|
2491 See also `backup-directory-alist'."
|
|
|
2492 :group 'backup
|
|
|
2493 :type '(choice (const :tag "Default" nil)
|
|
|
2494 (function :tag "Your function")))
|
|
|
2495
|
|
|
2496 (defcustom backup-directory-alist nil
|
|
|
2497 "Alist of filename patterns and backup directory names.
|
|
|
2498 Each element looks like (REGEXP . DIRECTORY). Backups of files with
|
|
|
2499 names matching REGEXP will be made in DIRECTORY. DIRECTORY may be
|
|
|
2500 relative or absolute. If it is absolute, so that all matching files
|
|
|
2501 are backed up into the same directory, the file names in this
|
|
|
2502 directory will be the full name of the file backed up with all
|
|
|
2503 directory separators changed to `!' to prevent clashes. This will not
|
|
|
2504 work correctly if your filesystem truncates the resulting name.
|
|
|
2505
|
|
|
2506 For the common case of all backups going into one directory, the alist
|
|
|
2507 should contain a single element pairing \".\" with the appropriate
|
|
|
2508 directory name.
|
|
|
2509
|
|
|
2510 If this variable is nil, or it fails to match a filename, the backup
|
|
|
2511 is made in the original file's directory.
|
|
|
2512
|
|
|
2513 On MS-DOS filesystems without long names this variable is always
|
|
|
2514 ignored."
|
|
|
2515 :group 'backup
|
|
|
2516 :type '(repeat (cons (regexp :tag "Regexp matching filename")
|
|
|
2517 (directory :tag "Backup directory name"))))
|
|
|
2518
|
|
428
|
2519 (defun make-backup-file-name (file)
|
|
|
2520 "Create the non-numeric backup file name for FILE.
|
|
1333
|
2521 Normally this will just be the file's name with `~' appended.
|
|
|
2522 Customization hooks are provided as follows.
|
|
|
2523
|
|
|
2524 If the variable `make-backup-file-name-function' is non-nil, its value
|
|
|
2525 should be a function which will be called with FILE as its argument;
|
|
|
2526 the resulting name is used.
|
|
|
2527
|
|
|
2528 Otherwise a match for FILE is sought in `backup-directory-alist'; see
|
|
|
2529 the documentation of that variable. If the directory for the backup
|
|
|
2530 doesn't exist, it is created."
|
|
|
2531 (if make-backup-file-name-function
|
|
|
2532 (funcall make-backup-file-name-function file)
|
|
|
2533 ; (if (and (eq system-type 'ms-dos)
|
|
|
2534 ; (not (msdos-long-file-names)))
|
|
|
2535 ; (let ((fn (file-name-nondirectory file)))
|
|
|
2536 ; (concat (file-name-directory file)
|
|
|
2537 ; (or (and (string-match "\\`[^.]+\\'" fn)
|
|
|
2538 ; (concat (match-string 0 fn) ".~"))
|
|
|
2539 ; (and (string-match "\\`[^.]+\\.\\(..?\\)?" fn)
|
|
|
2540 ; (concat (match-string 0 fn) "~")))))
|
|
|
2541 (concat (make-backup-file-name-1 file) "~")))
|
|
|
2542
|
|
|
2543 (defun make-backup-file-name-1 (file)
|
|
|
2544 "Subroutine of `make-backup-file-name' and `find-backup-file-name'."
|
|
|
2545 (let ((alist backup-directory-alist)
|
|
|
2546 elt backup-directory dir-sep-string)
|
|
|
2547 (while alist
|
|
|
2548 (setq elt (pop alist))
|
|
|
2549 (if (string-match (car elt) file)
|
|
|
2550 (setq backup-directory (cdr elt)
|
|
|
2551 alist nil)))
|
|
|
2552 (if (null backup-directory)
|
|
|
2553 file
|
|
|
2554 (unless (file-exists-p backup-directory)
|
|
|
2555 (condition-case nil
|
|
|
2556 (make-directory backup-directory 'parents)
|
|
|
2557 (file-error file)))
|
|
|
2558 (if (file-name-absolute-p backup-directory)
|
|
|
2559 (progn
|
|
|
2560 (when (memq system-type '(windows-nt ms-dos))
|
|
|
2561 ;; Normalize DOSish file names: convert all slashes to
|
|
|
2562 ;; directory-sep-char, downcase the drive letter, if any,
|
|
|
2563 ;; and replace the leading "x:" with "/drive_x".
|
|
|
2564 (or (file-name-absolute-p file)
|
|
|
2565 (setq file (expand-file-name file))) ; make defaults explicit
|
|
|
2566 ;; Replace any invalid file-name characters (for the
|
|
|
2567 ;; case of backing up remote files).
|
|
|
2568 (setq file (expand-file-name (convert-standard-filename file)))
|
|
|
2569 (setq dir-sep-string (char-to-string directory-sep-char))
|
|
|
2570 (if (eq (aref file 1) ?:)
|
|
|
2571 (setq file (concat dir-sep-string
|
|
|
2572 "drive_"
|
|
|
2573 (char-to-string (downcase (aref file 0)))
|
|
|
2574 (if (eq (aref file 2) directory-sep-char)
|
|
|
2575 ""
|
|
|
2576 dir-sep-string)
|
|
|
2577 (substring file 2)))))
|
|
|
2578 ;; Make the name unique by substituting directory
|
|
|
2579 ;; separators. It may not really be worth bothering about
|
|
|
2580 ;; doubling `!'s in the original name...
|
|
|
2581 (expand-file-name
|
|
|
2582 (subst-char-in-string
|
|
|
2583 directory-sep-char ?!
|
|
|
2584 (replace-regexp-in-string "!" "!!" file))
|
|
|
2585 backup-directory))
|
|
|
2586 (expand-file-name (file-name-nondirectory file)
|
|
|
2587 (file-name-as-directory
|
|
|
2588 (expand-file-name backup-directory
|
|
|
2589 (file-name-directory file))))))))
|
|
428
|
2590
|
|
|
2591 (defun backup-file-name-p (file)
|
|
|
2592 "Return non-nil if FILE is a backup file name (numeric or not).
|
|
|
2593 This is a separate function so you can redefine it for customization.
|
|
|
2594 You may need to redefine `file-name-sans-versions' as well."
|
|
440
|
2595 (string-match "~\\'" file))
|
|
428
|
2596
|
|
1333
|
2597 (defvar backup-extract-version-start)
|
|
|
2598
|
|
428
|
2599 ;; This is used in various files.
|
|
1333
|
2600 ;; The usage of backup-extract-version-start is not very clean,
|
|
|
2601 ;; but I can't see a good alternative, so as of now I am leaving it alone.
|
|
428
|
2602 (defun backup-extract-version (fn)
|
|
1333
|
2603 "Given the name of a numeric backup file, FN, return the backup number.
|
|
|
2604 Uses the free variable `backup-extract-version-start', whose value should be
|
|
428
|
2605 the index in the name where the version number begins."
|
|
1333
|
2606 (if (and (string-match "[0-9]+~$" fn backup-extract-version-start)
|
|
|
2607 (= (match-beginning 0) backup-extract-version-start))
|
|
|
2608 (string-to-int (substring fn backup-extract-version-start -1))
|
|
428
|
2609 0))
|
|
|
2610
|
|
1333
|
2611 ;; [[ FSF 21.2 says:
|
|
|
2612 ;; I believe there is no need to alter this behavior for VMS;
|
|
|
2613 ;; since backup files are not made on VMS, it should not get called. ]]
|
|
428
|
2614 (defun find-backup-file-name (fn)
|
|
1333
|
2615 "Find a file name for a backup file FN, and suggestions for deletions.
|
|
428
|
2616 Value is a list whose car is the name for the backup file
|
|
1333
|
2617 and whose cdr is a list of old versions to consider deleting now.
|
|
|
2618 If the value is nil, don't make a backup.
|
|
|
2619 Uses `backup-directory-alist' in the same way as does
|
|
|
2620 `make-backup-file-name'."
|
|
428
|
2621 (let ((handler (find-file-name-handler fn 'find-backup-file-name)))
|
|
|
2622 ;; Run a handler for this function so that ange-ftp can refuse to do it.
|
|
|
2623 (if handler
|
|
|
2624 (funcall handler 'find-backup-file-name fn)
|
|
1333
|
2625 (if (or (eq version-control 'never)
|
|
|
2626 ;; We don't support numbered backups on plain MS-DOS
|
|
|
2627 ;; when long file names are unavailable.
|
|
|
2628 ; (and (eq system-type 'ms-dos)
|
|
|
2629 ; (not (msdos-long-file-names)))
|
|
|
2630 )
|
|
428
|
2631 (list (make-backup-file-name fn))
|
|
1333
|
2632 (let* ((basic-name (make-backup-file-name-1 fn))
|
|
|
2633 (base-versions (concat (file-name-nondirectory basic-name)
|
|
|
2634 ".~"))
|
|
|
2635 (backup-extract-version-start (length base-versions))
|
|
428
|
2636 (high-water-mark 0)
|
|
1333
|
2637 (number-to-delete 0)
|
|
|
2638 possibilities deserve-versions-p versions)
|
|
428
|
2639 (condition-case ()
|
|
|
2640 (setq possibilities (file-name-all-completions
|
|
|
2641 base-versions
|
|
1333
|
2642 (file-name-directory basic-name))
|
|
|
2643 versions (sort (mapcar #'backup-extract-version
|
|
|
2644 possibilities)
|
|
|
2645 #'<)
|
|
|
2646 high-water-mark (apply 'max 0 versions)
|
|
428
|
2647 deserve-versions-p (or version-control
|
|
|
2648 (> high-water-mark 0))
|
|
|
2649 number-to-delete (- (length versions)
|
|
1333
|
2650 kept-old-versions
|
|
|
2651 kept-new-versions
|
|
|
2652 -1))
|
|
|
2653 (file-error (setq possibilities nil)))
|
|
428
|
2654 (if (not deserve-versions-p)
|
|
|
2655 (list (make-backup-file-name fn))
|
|
1333
|
2656 (cons (format "%s.~%d~" basic-name (1+ high-water-mark))
|
|
428
|
2657 (if (and (> number-to-delete 0)
|
|
|
2658 ;; Delete nothing if there is overflow
|
|
|
2659 ;; in the number of versions to keep.
|
|
|
2660 (>= (+ kept-new-versions kept-old-versions -1) 0))
|
|
1333
|
2661 (mapcar (lambda (n)
|
|
|
2662 (format "%s.~%d~" basic-name n))
|
|
428
|
2663 (let ((v (nthcdr kept-old-versions versions)))
|
|
|
2664 (rplacd (nthcdr (1- number-to-delete) v) ())
|
|
|
2665 v))))))))))
|
|
|
2666
|
|
|
2667 (defun file-nlinks (filename)
|
|
|
2668 "Return number of names file FILENAME has."
|
|
|
2669 (car (cdr (file-attributes filename))))
|
|
|
2670
|
|
|
2671 (defun file-relative-name (filename &optional directory)
|
|
1333
|
2672 "Convert FILENAME to be relative to DIRECTORY (default: `default-directory').
|
|
428
|
2673 This function returns a relative file name which is equivalent to FILENAME
|
|
|
2674 when used with that default directory as the default.
|
|
442
|
2675 If this is impossible (which can happen on MS Windows when the file name
|
|
|
2676 and directory use different drive names) then it returns FILENAME."
|
|
428
|
2677 (save-match-data
|
|
|
2678 (let ((fname (expand-file-name filename)))
|
|
|
2679 (setq directory (file-name-as-directory
|
|
|
2680 (expand-file-name (or directory default-directory))))
|
|
|
2681 ;; On Microsoft OSes, if FILENAME and DIRECTORY have different
|
|
|
2682 ;; drive names, they can't be relative, so return the absolute name.
|
|
440
|
2683 (if (and (eq system-type 'windows-nt)
|
|
428
|
2684 (not (string-equal (substring fname 0 2)
|
|
|
2685 (substring directory 0 2))))
|
|
|
2686 filename
|
|
|
2687 (let ((ancestor ".")
|
|
|
2688 (fname-dir (file-name-as-directory fname)))
|
|
|
2689 (while (and (not (string-match (concat "^" (regexp-quote directory))
|
|
|
2690 fname-dir))
|
|
|
2691 (not (string-match (concat "^" (regexp-quote directory)) fname)))
|
|
|
2692 (setq directory (file-name-directory (substring directory 0 -1))
|
|
|
2693 ancestor (if (equal ancestor ".")
|
|
|
2694 ".."
|
|
|
2695 (concat "../" ancestor))))
|
|
|
2696 ;; Now ancestor is empty, or .., or ../.., etc.
|
|
|
2697 (if (string-match (concat "^" (regexp-quote directory)) fname)
|
|
|
2698 ;; We matched within FNAME's directory part.
|
|
|
2699 ;; Add the rest of FNAME onto ANCESTOR.
|
|
|
2700 (let ((rest (substring fname (match-end 0))))
|
|
|
2701 (if (and (equal ancestor ".")
|
|
|
2702 (not (equal rest "")))
|
|
|
2703 ;; But don't bother with ANCESTOR if it would give us `./'.
|
|
|
2704 rest
|
|
|
2705 (concat (file-name-as-directory ancestor) rest)))
|
|
|
2706 ;; We matched FNAME's directory equivalent.
|
|
|
2707 ancestor))))))
|
|
|
2708
|
|
|
2709 (defun save-buffer (&optional args)
|
|
|
2710 "Save current buffer in visited file if modified. Versions described below.
|
|
|
2711 By default, makes the previous version into a backup file
|
|
|
2712 if previously requested or if this is the first save.
|
|
1333
|
2713 With 1 \\[universal-argument], marks this version
|
|
428
|
2714 to become a backup when the next save is done.
|
|
1333
|
2715 With 2 \\[universal-argument]'s,
|
|
428
|
2716 unconditionally makes the previous version into a backup file.
|
|
1333
|
2717 With 3 \\[universal-argument]'s, marks this version
|
|
|
2718 to become a backup when the next save is done,
|
|
|
2719 and unconditionally makes the previous version into a backup file.
|
|
|
2720
|
|
|
2721 With argument of 0, never make the previous version into a backup file.
|
|
428
|
2722
|
|
|
2723 If a file's name is FOO, the names of its numbered backup versions are
|
|
|
2724 FOO.~i~ for various integers i. A non-numbered backup file is called FOO~.
|
|
|
2725 Numeric backups (rather than FOO~) will be made if value of
|
|
|
2726 `version-control' is not the atom `never' and either there are already
|
|
|
2727 numeric versions of the file being backed up, or `version-control' is
|
|
|
2728 non-nil.
|
|
|
2729 We don't want excessive versions piling up, so there are variables
|
|
1333
|
2730 `kept-old-versions', which tells Emacs how many oldest versions to keep,
|
|
428
|
2731 and `kept-new-versions', which tells how many newest versions to keep.
|
|
|
2732 Defaults are 2 old versions and 2 new.
|
|
|
2733 `dired-kept-versions' controls dired's clean-directory (.) command.
|
|
|
2734 If `delete-old-versions' is nil, system will query user
|
|
1333
|
2735 before trimming versions. Otherwise it does it silently.
|
|
|
2736
|
|
|
2737 If `vc-make-backup-files' is nil, which is the default,
|
|
|
2738 no backup files are made for files managed by version control.
|
|
|
2739 (This is because the version control system itself records previous versions.)
|
|
|
2740
|
|
|
2741 See the subroutine `basic-save-buffer' for more information."
|
|
428
|
2742 (interactive "_p")
|
|
|
2743 (let ((modp (buffer-modified-p))
|
|
|
2744 (large (> (buffer-size) 50000))
|
|
|
2745 (make-backup-files (or (and make-backup-files (not (eq args 0)))
|
|
|
2746 (memq args '(16 64)))))
|
|
|
2747 (and modp (memq args '(16 64)) (setq buffer-backed-up nil))
|
|
1333
|
2748 (if (and modp large (buffer-file-name))
|
|
|
2749 (display-message 'progress (format "Saving file %s..."
|
|
|
2750 (buffer-file-name))))
|
|
428
|
2751 (basic-save-buffer)
|
|
|
2752 (and modp (memq args '(4 64)) (setq buffer-backed-up nil))))
|
|
|
2753
|
|
|
2754 (defun delete-auto-save-file-if-necessary (&optional force)
|
|
|
2755 "Delete auto-save file for current buffer if `delete-auto-save-files' is t.
|
|
1333
|
2756 Normally delete only if the file was written by this XEmacs since
|
|
|
2757 the last real save, but optional arg FORCE non-nil means delete anyway."
|
|
428
|
2758 (and buffer-auto-save-file-name delete-auto-save-files
|
|
|
2759 (not (string= buffer-file-name buffer-auto-save-file-name))
|
|
|
2760 (or force (recent-auto-save-p))
|
|
|
2761 (progn
|
|
|
2762 (ignore-file-errors (delete-file buffer-auto-save-file-name))
|
|
|
2763 (set-buffer-auto-saved))))
|
|
|
2764
|
|
|
2765 ;; XEmacs change (from Sun)
|
|
|
2766 ;; used to communicate with continue-save-buffer:
|
|
|
2767 (defvar continue-save-buffer-hooks-tail nil)
|
|
|
2768
|
|
|
2769 ;; Not in FSFmacs
|
|
|
2770 (defun basic-write-file-data (realname truename)
|
|
|
2771 ;; call the hooks until the bytes are put
|
|
|
2772 ;; call write-region as a last resort
|
|
|
2773 (let ((region-written nil)
|
|
|
2774 (hooks write-file-data-hooks))
|
|
|
2775 (while (and hooks (not region-written))
|
|
|
2776 (setq region-written (funcall (car hooks) realname)
|
|
|
2777 hooks (cdr hooks)))
|
|
|
2778 (if (not region-written)
|
|
|
2779 (write-region (point-min) (point-max) realname nil t truename))))
|
|
|
2780
|
|
1333
|
2781 ; (defvar auto-save-hook nil
|
|
|
2782 ; "Normal hook run just before auto-saving.")
|
|
|
2783
|
|
428
|
2784 (put 'after-save-hook 'permanent-local t)
|
|
|
2785 (defvar after-save-hook nil
|
|
|
2786 "Normal hook that is run after a buffer is saved to its file.
|
|
|
2787 These hooks are considered to pertain to the visited file.
|
|
|
2788 So this list is cleared if you change the visited file name.")
|
|
|
2789
|
|
1333
|
2790 (defvar save-buffer-coding-system nil
|
|
|
2791 "If non-nil, use this coding system for saving the buffer.
|
|
|
2792 More precisely, use this coding system in place of the
|
|
|
2793 value of `buffer-file-coding-system', when saving the buffer.
|
|
|
2794 Calling `write-region' for any purpose other than saving the buffer
|
|
|
2795 will still use `buffer-file-coding-system'; this variable has no effect
|
|
|
2796 in such cases.")
|
|
|
2797
|
|
|
2798 (make-variable-buffer-local 'save-buffer-coding-system)
|
|
|
2799 (put 'save-buffer-coding-system 'permanent-local t)
|
|
|
2800
|
|
428
|
2801 (defun files-fetch-hook-value (hook)
|
|
|
2802 (let ((localval (symbol-value hook))
|
|
|
2803 (globalval (default-value hook)))
|
|
|
2804 (if (memq t localval)
|
|
|
2805 (setq localval (append (delq t localval) (delq t globalval))))
|
|
|
2806 localval))
|
|
|
2807
|
|
|
2808 (defun basic-save-buffer ()
|
|
|
2809 "Save the current buffer in its visited file, if it has been modified.
|
|
1333
|
2810 The hooks `write-contents-hooks', `local-write-file-hooks' and
|
|
|
2811 `write-file-hooks' get a chance to do the job of saving; if they do not,
|
|
|
2812 then the buffer is saved in the visited file file in the usual way.
|
|
|
2813 After saving the buffer, this function runs `after-save-hook'."
|
|
428
|
2814 (interactive)
|
|
1333
|
2815 (save-current-buffer
|
|
428
|
2816 ;; In an indirect buffer, save its base buffer instead.
|
|
|
2817 (if (buffer-base-buffer)
|
|
|
2818 (set-buffer (buffer-base-buffer)))
|
|
|
2819 (if (buffer-modified-p)
|
|
|
2820 (let ((recent-save (recent-auto-save-p)))
|
|
|
2821 ;; If buffer has no file name, ask user for one.
|
|
|
2822 (or buffer-file-name
|
|
|
2823 (let ((filename
|
|
|
2824 (expand-file-name
|
|
|
2825 (read-file-name "File to save in: ") nil)))
|
|
|
2826 (and (file-exists-p filename)
|
|
|
2827 (or (y-or-n-p (format "File `%s' exists; overwrite? "
|
|
|
2828 filename))
|
|
|
2829 (error "Canceled")))
|
|
|
2830 (set-visited-file-name filename)))
|
|
|
2831 (or (verify-visited-file-modtime (current-buffer))
|
|
|
2832 (not (file-exists-p buffer-file-name))
|
|
|
2833 (yes-or-no-p
|
|
|
2834 (format "%s has changed since visited or saved. Save anyway? "
|
|
|
2835 (file-name-nondirectory buffer-file-name)))
|
|
|
2836 (error "Save not confirmed"))
|
|
|
2837 (save-restriction
|
|
|
2838 (widen)
|
|
1333
|
2839 (save-excursion
|
|
|
2840 (and (> (point-max) 1)
|
|
|
2841 (not find-file-literally)
|
|
|
2842 (not (eq (char-after (1- (point-max))) ?\n))
|
|
|
2843 (not (and (eq selective-display t)
|
|
|
2844 (eq (char-after (1- (point-max))) ?\r)))
|
|
|
2845 (or (eq require-final-newline t)
|
|
|
2846 (and require-final-newline
|
|
|
2847 (y-or-n-p
|
|
|
2848 (format "Buffer %s does not end in newline. Add one? "
|
|
|
2849 (buffer-name)))))
|
|
|
2850 (save-excursion
|
|
|
2851 (goto-char (point-max))
|
|
|
2852 (insert ?\n))))
|
|
|
2853
|
|
|
2854 ;; Support VC version backups.
|
|
|
2855 (if-fboundp 'vc-before-save
|
|
|
2856 (vc-before-save))
|
|
434
|
2857
|
|
444
|
2858 ;; Run the write-file-hooks until one returns non-nil.
|
|
428
|
2859 ;; Bind after-save-hook to nil while running the
|
|
|
2860 ;; write-file-hooks so that if this function is called
|
|
|
2861 ;; recursively (from inside a write-file-hook) the
|
|
|
2862 ;; after-hooks will only get run once (from the
|
|
|
2863 ;; outermost call).
|
|
|
2864 ;;
|
|
|
2865 ;; Ugh, have to duplicate logic of run-hook-with-args-until-success
|
|
|
2866 (let ((hooks (append (files-fetch-hook-value 'write-contents-hooks)
|
|
|
2867 (files-fetch-hook-value
|
|
|
2868 'local-write-file-hooks)
|
|
|
2869 (files-fetch-hook-value 'write-file-hooks)))
|
|
|
2870 (after-save-hook nil)
|
|
|
2871 (local-write-file-hooks nil)
|
|
|
2872 (write-contents-hooks nil)
|
|
|
2873 (write-file-hooks nil)
|
|
|
2874 done)
|
|
|
2875 (while (and hooks
|
|
|
2876 (let ((continue-save-buffer-hooks-tail hooks))
|
|
|
2877 (not (setq done (funcall (car hooks))))))
|
|
|
2878 (setq hooks (cdr hooks)))
|
|
|
2879 ;; If a hook returned t, file is already "written".
|
|
|
2880 ;; Otherwise, write it the usual way now.
|
|
|
2881 (if (not done)
|
|
|
2882 (basic-save-buffer-1)))
|
|
|
2883 ;; XEmacs: next two clauses (buffer-file-number setting and
|
|
1333
|
2884 ;; set-file-modes) moved into basic-save-buffer-1 for use by
|
|
|
2885 ;; continue-save-buffer.
|
|
428
|
2886 )
|
|
|
2887 ;; If the auto-save file was recent before this command,
|
|
|
2888 ;; delete it now.
|
|
|
2889 (delete-auto-save-file-if-necessary recent-save)
|
|
|
2890 ;; Support VC `implicit' locking.
|
|
502
|
2891 (if-fboundp 'vc-after-save
|
|
|
2892 (vc-after-save))
|
|
428
|
2893 (run-hooks 'after-save-hook))
|
|
|
2894 (display-message 'no-log "(No changes need to be saved)"))))
|
|
|
2895
|
|
|
2896 ;; This does the "real job" of writing a buffer into its visited file
|
|
|
2897 ;; and making a backup file. This is what is normally done
|
|
|
2898 ;; but inhibited if one of write-file-hooks returns non-nil.
|
|
|
2899 ;; It returns a value to store in setmodes.
|
|
|
2900 (defun basic-save-buffer-1 ()
|
|
1333
|
2901 (if save-buffer-coding-system
|
|
|
2902 (let ((coding-system-for-write save-buffer-coding-system))
|
|
|
2903 (basic-save-buffer-2))
|
|
|
2904 (basic-save-buffer-2)))
|
|
|
2905
|
|
|
2906 (defun basic-save-buffer-2 ()
|
|
428
|
2907 (let (setmodes tempsetmodes)
|
|
|
2908 (if (not (file-writable-p buffer-file-name))
|
|
|
2909 (let ((dir (file-name-directory buffer-file-name)))
|
|
|
2910 (if (not (file-directory-p dir))
|
|
1333
|
2911 (if (file-exists-p dir)
|
|
|
2912 (error "%s is not a directory" dir)
|
|
|
2913 (error "%s: no such directory" buffer-file-name))
|
|
428
|
2914 (if (not (file-exists-p buffer-file-name))
|
|
|
2915 (error "Directory %s write-protected" dir)
|
|
|
2916 (if (yes-or-no-p
|
|
|
2917 (format "File %s is write-protected; try to save anyway? "
|
|
|
2918 (file-name-nondirectory
|
|
|
2919 buffer-file-name)))
|
|
|
2920 (setq tempsetmodes t)
|
|
|
2921 (error
|
|
|
2922 "Attempt to save to a file which you aren't allowed to write"))))))
|
|
|
2923 (or buffer-backed-up
|
|
|
2924 (setq setmodes (backup-buffer)))
|
|
|
2925 (let ((dir (file-name-directory buffer-file-name)))
|
|
|
2926 (if (and file-precious-flag
|
|
|
2927 (file-writable-p dir))
|
|
|
2928 ;; If file is precious, write temp name, then rename it.
|
|
|
2929 ;; This requires write access to the containing dir,
|
|
|
2930 ;; which is why we don't try it if we don't have that access.
|
|
|
2931 (let ((realname buffer-file-name)
|
|
|
2932 tempname nogood i succeed
|
|
|
2933 (old-modtime (visited-file-modtime)))
|
|
|
2934 (setq i 0)
|
|
|
2935 (setq nogood t)
|
|
|
2936 ;; Find the temporary name to write under.
|
|
|
2937 (while nogood
|
|
|
2938 (setq tempname (format "%s#tmp#%d" dir i))
|
|
|
2939 (setq nogood (file-exists-p tempname))
|
|
|
2940 (setq i (1+ i)))
|
|
|
2941 (unwind-protect
|
|
|
2942 (progn (clear-visited-file-modtime)
|
|
|
2943 (write-region (point-min) (point-max)
|
|
|
2944 tempname nil realname
|
|
|
2945 buffer-file-truename)
|
|
|
2946 (setq succeed t))
|
|
|
2947 ;; If writing the temp file fails,
|
|
|
2948 ;; delete the temp file.
|
|
|
2949 (or succeed
|
|
|
2950 (progn
|
|
1333
|
2951 (ignore-file-errors
|
|
|
2952 (delete-file tempname))
|
|
428
|
2953 (set-visited-file-modtime old-modtime))))
|
|
|
2954 ;; Since we have created an entirely new file
|
|
|
2955 ;; and renamed it, make sure it gets the
|
|
|
2956 ;; right permission bits set.
|
|
|
2957 (setq setmodes (file-modes buffer-file-name))
|
|
|
2958 ;; We succeeded in writing the temp file,
|
|
|
2959 ;; so rename it.
|
|
|
2960 (rename-file tempname buffer-file-name t))
|
|
|
2961 ;; If file not writable, see if we can make it writable
|
|
|
2962 ;; temporarily while we write it.
|
|
|
2963 ;; But no need to do so if we have just backed it up
|
|
|
2964 ;; (setmodes is set) because that says we're superseding.
|
|
|
2965 (cond ((and tempsetmodes (not setmodes))
|
|
|
2966 ;; Change the mode back, after writing.
|
|
|
2967 (setq setmodes (file-modes buffer-file-name))
|
|
1333
|
2968 (set-file-modes buffer-file-name (logior setmodes 128))))
|
|
428
|
2969 (basic-write-file-data buffer-file-name buffer-file-truename)))
|
|
1333
|
2970 ;; #### FSF 21.2. We don't have last-coding-system-used.
|
|
|
2971 ; ;; Now we have saved the current buffer. Let's make sure
|
|
|
2972 ; ;; that buffer-file-coding-system is fixed to what
|
|
|
2973 ; ;; actually used for saving by binding it locally.
|
|
|
2974 ; (if save-buffer-coding-system
|
|
|
2975 ; (setq save-buffer-coding-system last-coding-system-used)
|
|
|
2976 ; (setq buffer-file-coding-system last-coding-system-used))
|
|
428
|
2977 (setq buffer-file-number
|
|
|
2978 (if buffer-file-name
|
|
|
2979 (nth 10 (file-attributes buffer-file-name))
|
|
|
2980 nil))
|
|
|
2981 (if setmodes
|
|
|
2982 (condition-case ()
|
|
|
2983 (set-file-modes buffer-file-name setmodes)
|
|
|
2984 (error nil)))))
|
|
|
2985
|
|
|
2986 ;; XEmacs change, from Sun
|
|
|
2987 (defun continue-save-buffer ()
|
|
|
2988 "Provide a clean way for a write-file-hook to wrap AROUND
|
|
|
2989 the execution of the remaining hooks and writing to disk.
|
|
|
2990 Do not call this function except from a functions
|
|
444
|
2991 on the `write-file-hooks' or `write-contents-hooks' list.
|
|
428
|
2992 A hook that calls this function must return non-nil,
|
|
444
|
2993 to signal completion to its caller. `continue-save-buffer'
|
|
428
|
2994 always returns non-nil."
|
|
|
2995 (let ((hooks (cdr (or continue-save-buffer-hooks-tail
|
|
|
2996 (error
|
|
|
2997 "continue-save-buffer called outside a write-file-hook!"))))
|
|
|
2998 (done nil))
|
|
|
2999 ;; Do something like this:
|
|
|
3000 ;; (let ((write-file-hooks hooks)) (basic-save-buffer))
|
|
|
3001 ;; First run the rest of the hooks.
|
|
|
3002 (while (and hooks
|
|
|
3003 (let ((continue-save-buffer-hooks-tail hooks))
|
|
|
3004 (not (setq done (funcall (car hooks))))))
|
|
|
3005 (setq hooks (cdr hooks)))
|
|
|
3006 ;;
|
|
|
3007 ;; If a hook returned t, file is already "written".
|
|
|
3008 (if (not done)
|
|
|
3009 (basic-save-buffer-1))
|
|
|
3010 'continue-save-buffer))
|
|
|
3011
|
|
|
3012 (defcustom save-some-buffers-query-display-buffer t
|
|
|
3013 "*Non-nil makes `\\[save-some-buffers]' switch to the buffer offered for saving."
|
|
|
3014 :type 'boolean
|
|
|
3015 :group 'editing-basics)
|
|
|
3016
|
|
1333
|
3017 (defun save-some-buffers (&optional arg pred)
|
|
428
|
3018 "Save some modified file-visiting buffers. Asks user about each one.
|
|
|
3019 Optional argument (the prefix) non-nil means save all with no questions.
|
|
1333
|
3020 Optional second argument PRED determines which buffers are considered:
|
|
|
3021 If PRED is nil, all the file-visiting buffers are considered.
|
|
|
3022 If PRED is t, then certain non-file buffers will also be considered.
|
|
|
3023 If PRED is a zero-argument function, it indicates for each buffer whether
|
|
|
3024 to consider it or not when called with that buffer current."
|
|
428
|
3025 (interactive "P")
|
|
|
3026 (save-excursion
|
|
|
3027 ;; `delete-other-windows' can bomb during autoloads generation, so
|
|
|
3028 ;; guard it well.
|
|
|
3029 (if (or noninteractive
|
|
|
3030 (eq (selected-window) (minibuffer-window))
|
|
|
3031 (not save-some-buffers-query-display-buffer))
|
|
|
3032 ;; If playing with windows is unsafe or undesired, just do the
|
|
|
3033 ;; usual drill.
|
|
1333
|
3034 (save-some-buffers-1 arg pred nil)
|
|
428
|
3035 ;; Else, protect the windows.
|
|
|
3036 (when (save-window-excursion
|
|
1333
|
3037 (save-some-buffers-1 arg pred t))
|
|
428
|
3038 ;; Force redisplay.
|
|
|
3039 (sit-for 0)))))
|
|
|
3040
|
|
|
3041 ;; XEmacs - do not use queried flag
|
|
1333
|
3042 (defun save-some-buffers-1 (arg pred switch-buffer)
|
|
428
|
3043 (let* ((switched nil)
|
|
612
|
3044 (last-buffer nil)
|
|
428
|
3045 (files-done
|
|
|
3046 (map-y-or-n-p
|
|
|
3047 (lambda (buffer)
|
|
612
|
3048 (prog1
|
|
|
3049 (and (buffer-modified-p buffer)
|
|
|
3050 (not (buffer-base-buffer buffer))
|
|
|
3051 ;; XEmacs addition:
|
|
|
3052 (not (symbol-value-in-buffer 'save-buffers-skip buffer))
|
|
|
3053 (or
|
|
|
3054 (buffer-file-name buffer)
|
|
1333
|
3055 (and pred
|
|
612
|
3056 (progn
|
|
|
3057 (set-buffer buffer)
|
|
|
3058 (and buffer-offer-save (> (buffer-size) 0)))))
|
|
1333
|
3059 (or (not (functionp pred))
|
|
|
3060 (with-current-buffer buffer (funcall pred)))
|
|
612
|
3061 (if arg
|
|
|
3062 t
|
|
|
3063 ;; #### We should provide a per-buffer means to
|
|
|
3064 ;; disable the switching. For instance, you might
|
|
|
3065 ;; want to turn it off for buffers the contents of
|
|
|
3066 ;; which is meaningless to humans, such as
|
|
|
3067 ;; `.newsrc.eld'.
|
|
|
3068 (when (and switch-buffer
|
|
|
3069 ;; map-y-or-n-p is displaying help
|
|
|
3070 (not (eq last-buffer buffer)))
|
|
|
3071 (unless (one-window-p)
|
|
|
3072 (delete-other-windows))
|
|
|
3073 (setq switched t)
|
|
|
3074 ;; #### Consider using `display-buffer' here for 21.1!
|
|
|
3075 ;;(display-buffer buffer nil (selected-frame)))
|
|
|
3076 (switch-to-buffer buffer t))
|
|
|
3077 (if (buffer-file-name buffer)
|
|
|
3078 (format "Save file %s? "
|
|
|
3079 (buffer-file-name buffer))
|
|
|
3080 (format "Save buffer %s? "
|
|
|
3081 (buffer-name buffer)))))
|
|
|
3082 (setq last-buffer buffer)))
|
|
428
|
3083 (lambda (buffer)
|
|
|
3084 (set-buffer buffer)
|
|
|
3085 (condition-case ()
|
|
|
3086 (save-buffer)
|
|
|
3087 (error nil)))
|
|
|
3088 (buffer-list)
|
|
|
3089 '("buffer" "buffers" "save")
|
|
|
3090 ;;instead of this we just say "yes all", "no all", etc.
|
|
|
3091 ;;"save all the rest"
|
|
|
3092 ;;"save only this buffer" "save no more buffers")
|
|
|
3093 ;; this is rather bogus. --ben
|
|
|
3094 ;; (it makes the dialog box too big, and you get an error
|
|
|
3095 ;; "wrong type argument: framep, nil" when you hit q after
|
|
|
3096 ;; choosing the option from the dialog box)
|
|
|
3097
|
|
|
3098 ;; We should fix the dialog box rather than disabling
|
|
|
3099 ;; this! --hniksic
|
|
|
3100 (list (list ?\C-r (lambda (buf)
|
|
|
3101 ;; #### FSF has an EXIT-ACTION argument
|
|
|
3102 ;; to `view-buffer'.
|
|
1333
|
3103 (view-buffer buf
|
|
|
3104 ; (function
|
|
|
3105 ; (lambda (ignore)
|
|
|
3106 ; (exit-recursive-edit))))
|
|
|
3107 )
|
|
502
|
3108 (with-boundp 'view-exit-action
|
|
|
3109 (setq view-exit-action
|
|
|
3110 (lambda (ignore)
|
|
|
3111 (exit-recursive-edit))))
|
|
428
|
3112 (recursive-edit)
|
|
|
3113 ;; Return nil to ask about BUF again.
|
|
|
3114 nil)
|
|
442
|
3115 "%_Display Buffer"))))
|
|
428
|
3116 (abbrevs-done
|
|
|
3117 (and save-abbrevs abbrevs-changed
|
|
|
3118 (progn
|
|
|
3119 (if (or arg
|
|
1333
|
3120 (eq save-abbrevs 'silently)
|
|
428
|
3121 (y-or-n-p (format "Save abbrevs in %s? " abbrev-file-name)))
|
|
|
3122 (write-abbrev-file nil))
|
|
|
3123 ;; Don't keep bothering user if he says no.
|
|
|
3124 (setq abbrevs-changed nil)
|
|
|
3125 t))))
|
|
|
3126 (or (> files-done 0) abbrevs-done
|
|
|
3127 (display-message 'no-log "(No files need saving)"))
|
|
|
3128 switched))
|
|
|
3129
|
|
|
3130
|
|
1333
|
3131
|
|
428
|
3132 (defun not-modified (&optional arg)
|
|
|
3133 "Mark current buffer as unmodified, not needing to be saved.
|
|
|
3134 With prefix arg, mark buffer as modified, so \\[save-buffer] will save.
|
|
|
3135
|
|
|
3136 It is not a good idea to use this function in Lisp programs, because it
|
|
|
3137 prints a message in the minibuffer. Instead, use `set-buffer-modified-p'."
|
|
|
3138 (interactive "_P")
|
|
|
3139 (if arg ;; rewritten for I18N3 snarfing
|
|
|
3140 (display-message 'command "Modification-flag set")
|
|
|
3141 (display-message 'command "Modification-flag cleared"))
|
|
|
3142 (set-buffer-modified-p arg))
|
|
|
3143
|
|
|
3144 (defun toggle-read-only (&optional arg)
|
|
1333
|
3145 "Change whether this buffer is visiting its file read-only.
|
|
|
3146 With arg, set read-only iff arg is positive.
|
|
|
3147 If visiting file read-only and `view-read-only' is non-nil, enter view mode."
|
|
|
3148 (interactive "P")
|
|
|
3149 (cond
|
|
|
3150 ((and arg (if (> (prefix-numeric-value arg) 0) buffer-read-only
|
|
|
3151 (not buffer-read-only))) ; If buffer-read-only is set correctly,
|
|
|
3152 nil) ; do nothing.
|
|
|
3153 ;; Toggle.
|
|
|
3154 ((and buffer-read-only view-minor-mode)
|
|
|
3155 ;(View-exit-and-edit)
|
|
|
3156 (view-mode)
|
|
|
3157 (make-local-variable 'view-read-only)
|
|
|
3158 (setq view-read-only t)) ; Must leave view mode.
|
|
|
3159 ((and (not buffer-read-only) view-read-only
|
|
|
3160 (not (eq (get major-mode 'mode-class) 'special)))
|
|
|
3161 ;(view-mode-enter)
|
|
|
3162 (view-mode))
|
|
|
3163 (t (setq buffer-read-only (not buffer-read-only))
|
|
|
3164 (force-mode-line-update))))
|
|
428
|
3165
|
|
|
3166 (defun insert-file (filename &optional codesys)
|
|
|
3167 "Insert contents of file FILENAME into buffer after point.
|
|
|
3168 Set mark after the inserted text.
|
|
|
3169
|
|
771
|
3170 Optional second argument specifies the coding system to use when decoding
|
|
|
3171 the file. Interactively, with a prefix argument, you will be prompted for
|
|
|
3172 the coding system.
|
|
428
|
3173
|
|
771
|
3174 This function is meant for the user to run interactively. Don't call it
|
|
|
3175 from programs! Use `insert-file-contents' instead. \(Its calling sequence
|
|
|
3176 is different; see its documentation)."
|
|
428
|
3177 (interactive "*fInsert file: \nZCoding system: ")
|
|
|
3178 (if (file-directory-p filename)
|
|
|
3179 (signal 'file-error (list "Opening input file" "file is a directory"
|
|
|
3180 filename)))
|
|
|
3181 (let ((tem
|
|
|
3182 (if codesys
|
|
|
3183 (let ((coding-system-for-read
|
|
|
3184 (get-coding-system codesys)))
|
|
|
3185 (insert-file-contents filename))
|
|
|
3186 (insert-file-contents filename))))
|
|
|
3187 (push-mark (+ (point) (car (cdr tem))))))
|
|
|
3188
|
|
|
3189 (defun append-to-file (start end filename &optional codesys)
|
|
|
3190 "Append the contents of the region to the end of file FILENAME.
|
|
771
|
3191 When called from a function, expects three arguments, START, END and
|
|
|
3192 FILENAME. START and END are buffer positions saying what text to write.
|
|
|
3193 Optional fourth argument specifies the coding system to use when encoding
|
|
|
3194 the file. Interactively, with a prefix argument, you will be prompted for
|
|
|
3195 the coding system."
|
|
428
|
3196 (interactive "r\nFAppend to file: \nZCoding system: ")
|
|
|
3197 (if codesys
|
|
|
3198 (let ((buffer-file-coding-system (get-coding-system codesys)))
|
|
|
3199 (write-region start end filename t))
|
|
|
3200 (write-region start end filename t)))
|
|
|
3201
|
|
|
3202 (defun file-newest-backup (filename)
|
|
|
3203 "Return most recent backup file for FILENAME or nil if no backups exist."
|
|
1333
|
3204 ;; `make-backup-file-name' will get us the right directory for
|
|
|
3205 ;; ordinary or numeric backups. It might create a directory for
|
|
|
3206 ;; backups as a side-effect, according to `backup-directory-alist'.
|
|
|
3207 (let* ((filename (file-name-sans-versions
|
|
|
3208 (make-backup-file-name filename)))
|
|
428
|
3209 (file (file-name-nondirectory filename))
|
|
|
3210 (dir (file-name-directory filename))
|
|
|
3211 (comp (file-name-all-completions file dir))
|
|
1333
|
3212 (newest nil)
|
|
|
3213 tem)
|
|
428
|
3214 (while comp
|
|
1333
|
3215 (setq tem (pop comp))
|
|
|
3216 (cond ((and (backup-file-name-p tem)
|
|
|
3217 (string= (file-name-sans-versions tem) file))
|
|
|
3218 (setq tem (concat dir tem))
|
|
|
3219 (if (or (null newest)
|
|
|
3220 (file-newer-than-file-p tem newest))
|
|
|
3221 (setq newest tem)))))
|
|
428
|
3222 newest))
|
|
|
3223
|
|
|
3224 (defun rename-uniquely ()
|
|
|
3225 "Rename current buffer to a similar name not already taken.
|
|
|
3226 This function is useful for creating multiple shell process buffers
|
|
|
3227 or multiple mail buffers, etc."
|
|
|
3228 (interactive)
|
|
|
3229 (save-match-data
|
|
1333
|
3230 (let ((base-name (buffer-name)))
|
|
|
3231 (and (string-match "<[0-9]+>\\'" base-name)
|
|
|
3232 (not (and buffer-file-name
|
|
|
3233 (string= base-name
|
|
|
3234 (file-name-nondirectory buffer-file-name))))
|
|
|
3235 ;; If the existing buffer name has a <NNN>,
|
|
|
3236 ;; which isn't part of the file name (if any),
|
|
|
3237 ;; then get rid of that.
|
|
|
3238 (setq base-name (substring base-name 0 (match-beginning 0))))
|
|
|
3239 (rename-buffer (generate-new-buffer-name base-name))
|
|
|
3240 (force-mode-line-update))))
|
|
428
|
3241
|
|
|
3242 (defun make-directory-path (path)
|
|
|
3243 "Create all the directories along path that don't exist yet."
|
|
|
3244 (interactive "Fdirectory path to create: ")
|
|
|
3245 (make-directory path t))
|
|
|
3246
|
|
|
3247 (defun make-directory (dir &optional parents)
|
|
|
3248 "Create the directory DIR and any nonexistent parent dirs.
|
|
|
3249 Interactively, the default choice of directory to create
|
|
|
3250 is the current default directory for file names.
|
|
|
3251 That is useful when you have visited a file in a nonexistent directory.
|
|
|
3252
|
|
|
3253 Noninteractively, the second (optional) argument PARENTS says whether
|
|
|
3254 to create parent directories if they don't exist."
|
|
|
3255 (interactive (list (let ((current-prefix-arg current-prefix-arg))
|
|
|
3256 (read-directory-name "Create directory: "))
|
|
|
3257 current-prefix-arg))
|
|
|
3258 (let ((handler (find-file-name-handler dir 'make-directory)))
|
|
|
3259 (if handler
|
|
|
3260 (funcall handler 'make-directory dir parents)
|
|
|
3261 (if (not parents)
|
|
|
3262 (make-directory-internal dir)
|
|
|
3263 (let ((dir (directory-file-name (expand-file-name dir)))
|
|
|
3264 create-list)
|
|
|
3265 (while (not (file-exists-p dir))
|
|
|
3266 (setq create-list (cons dir create-list)
|
|
|
3267 dir (directory-file-name (file-name-directory dir))))
|
|
|
3268 (while create-list
|
|
|
3269 (make-directory-internal (car create-list))
|
|
|
3270 (setq create-list (cdr create-list))))))))
|
|
|
3271
|
|
|
3272 (put 'revert-buffer-function 'permanent-local t)
|
|
|
3273 (defvar revert-buffer-function nil
|
|
|
3274 "Function to use to revert this buffer, or nil to do the default.
|
|
|
3275 The function receives two arguments IGNORE-AUTO and NOCONFIRM,
|
|
|
3276 which are the arguments that `revert-buffer' received.")
|
|
|
3277
|
|
|
3278 (put 'revert-buffer-insert-file-contents-function 'permanent-local t)
|
|
|
3279 (defvar revert-buffer-insert-file-contents-function nil
|
|
|
3280 "Function to use to insert contents when reverting this buffer.
|
|
|
3281 Gets two args, first the nominal file name to use,
|
|
849
|
3282 and second, t if reading the auto-save file.
|
|
|
3283 If the current buffer contents are to be discarded, the function must do
|
|
1333
|
3284 so itself.
|
|
|
3285
|
|
|
3286 The function you specify is responsible for updating (or preserving) point.")
|
|
428
|
3287
|
|
|
3288 (defvar before-revert-hook nil
|
|
|
3289 "Normal hook for `revert-buffer' to run before reverting.
|
|
|
3290 If `revert-buffer-function' is used to override the normal revert
|
|
|
3291 mechanism, this hook is not used.")
|
|
|
3292
|
|
|
3293 (defvar after-revert-hook nil
|
|
|
3294 "Normal hook for `revert-buffer' to run after reverting.
|
|
|
3295 Note that the hook value that it runs is the value that was in effect
|
|
|
3296 before reverting; that makes a difference if you have buffer-local
|
|
|
3297 hook functions.
|
|
|
3298
|
|
|
3299 If `revert-buffer-function' is used to override the normal revert
|
|
|
3300 mechanism, this hook is not used.")
|
|
|
3301
|
|
|
3302 (defvar revert-buffer-internal-hook nil
|
|
|
3303 "Don't use this.")
|
|
|
3304
|
|
1333
|
3305 ;; END SYNC WITH FSF 21.2.
|
|
|
3306
|
|
428
|
3307 (defun revert-buffer (&optional ignore-auto noconfirm preserve-modes)
|
|
|
3308 "Replace the buffer text with the text of the visited file on disk.
|
|
|
3309 This undoes all changes since the file was visited or saved.
|
|
|
3310 With a prefix argument, offer to revert from latest auto-save file, if
|
|
|
3311 that is more recent than the visited file.
|
|
|
3312
|
|
849
|
3313 This command also refreshes certain special buffers that contain text
|
|
|
3314 which doesn't come from a file, but reflects some other data base
|
|
|
3315 instead: for example, Dired buffers and buffer-list buffers. This is
|
|
|
3316 implemented by having the modes set `revert-buffer-function'.
|
|
428
|
3317
|
|
|
3318 When called from Lisp, the first argument is IGNORE-AUTO; only offer
|
|
|
3319 to revert from the auto-save file when this is nil. Note that the
|
|
|
3320 sense of this argument is the reverse of the prefix argument, for the
|
|
|
3321 sake of backward compatibility. IGNORE-AUTO is optional, defaulting
|
|
|
3322 to nil.
|
|
|
3323
|
|
|
3324 Optional second argument NOCONFIRM means don't ask for confirmation at
|
|
|
3325 all.
|
|
|
3326
|
|
|
3327 Optional third argument PRESERVE-MODES non-nil means don't alter
|
|
849
|
3328 the buffer's modes. Otherwise, reinitialize them using `normal-mode'.
|
|
428
|
3329
|
|
|
3330 If the value of `revert-buffer-function' is non-nil, it is called to
|
|
|
3331 do all the work for this command. Otherwise, the hooks
|
|
|
3332 `before-revert-hook' and `after-revert-hook' are run at the beginning
|
|
|
3333 and the end, and if `revert-buffer-insert-file-contents-function' is
|
|
819
|
3334 non-nil, it is called instead of rereading visited file contents.
|
|
|
3335
|
|
849
|
3336 If the buffer-modified flag is nil, and we are not reverting from an
|
|
|
3337 auto-save file, then compare the contents of the buffer and the file.
|
|
|
3338 Revert only if they differ."
|
|
428
|
3339
|
|
|
3340 ;; I admit it's odd to reverse the sense of the prefix argument, but
|
|
|
3341 ;; there is a lot of code out there which assumes that the first
|
|
|
3342 ;; argument should be t to avoid consulting the auto-save file, and
|
|
|
3343 ;; there's no straightforward way to encourage authors to notice a
|
|
|
3344 ;; reversal of the argument sense. So I'm just changing the user
|
|
|
3345 ;; interface, but leaving the programmatic interface the same.
|
|
|
3346 (interactive (list (not current-prefix-arg)))
|
|
|
3347 (if revert-buffer-function
|
|
|
3348 (funcall revert-buffer-function ignore-auto noconfirm)
|
|
|
3349 (let* ((opoint (point))
|
|
819
|
3350 (newbuf nil)
|
|
988
|
3351 (found nil)
|
|
819
|
3352 (delay-prompt nil)
|
|
428
|
3353 (auto-save-p (and (not ignore-auto)
|
|
|
3354 (recent-auto-save-p)
|
|
|
3355 buffer-auto-save-file-name
|
|
|
3356 (file-readable-p buffer-auto-save-file-name)
|
|
|
3357 (y-or-n-p
|
|
|
3358 "Buffer has been auto-saved recently. Revert from auto-save file? ")))
|
|
|
3359 (file-name (if auto-save-p
|
|
|
3360 buffer-auto-save-file-name
|
|
|
3361 buffer-file-name)))
|
|
|
3362 (cond ((null file-name)
|
|
|
3363 (error "Buffer does not seem to be associated with any file"))
|
|
|
3364 ((or noconfirm
|
|
|
3365 (and (not (buffer-modified-p))
|
|
988
|
3366 (dolist (rx revert-without-query found)
|
|
|
3367 (when (string-match rx file-name)
|
|
|
3368 (setq found t))))
|
|
819
|
3369 ;; If we might perform an optimized revert then we
|
|
|
3370 ;; want to delay prompting in case we don't need to
|
|
|
3371 ;; do it at all
|
|
|
3372 (and (not auto-save-p)
|
|
|
3373 (not (buffer-modified-p))
|
|
|
3374 (setq delay-prompt t))
|
|
428
|
3375 (yes-or-no-p (format "Revert buffer from file %s? "
|
|
|
3376 file-name)))
|
|
|
3377 (run-hooks 'before-revert-hook)
|
|
819
|
3378 ;; Only perform our optimized revert if nothing obvious
|
|
|
3379 ;; has changed.
|
|
|
3380 (cond ((or auto-save-p
|
|
|
3381 (buffer-modified-p)
|
|
|
3382 (and (setq newbuf (revert-buffer-internal
|
|
|
3383 file-name))
|
|
988
|
3384 (or noconfirm found
|
|
838
|
3385 (and delay-prompt
|
|
|
3386 (yes-or-no-p
|
|
|
3387 (format "Revert buffer from file %s? "
|
|
|
3388 file-name))))))
|
|
819
|
3389 ;; If file was backed up but has changed since,
|
|
|
3390 ;; we should make another backup.
|
|
|
3391 (and (not auto-save-p)
|
|
|
3392 (not (verify-visited-file-modtime (current-buffer)))
|
|
|
3393 (setq buffer-backed-up nil))
|
|
|
3394 ;; Get rid of all undo records for this buffer.
|
|
|
3395 (or (eq buffer-undo-list t)
|
|
|
3396 (setq buffer-undo-list nil))
|
|
|
3397 ;; Effectively copy the after-revert-hook status,
|
|
|
3398 ;; since after-find-file will clobber it.
|
|
|
3399 (let ((global-hook (default-value 'after-revert-hook))
|
|
|
3400 (local-hook-p (local-variable-p 'after-revert-hook
|
|
|
3401 (current-buffer)))
|
|
|
3402 (local-hook (and (local-variable-p 'after-revert-hook
|
|
|
3403 (current-buffer))
|
|
|
3404 after-revert-hook)))
|
|
|
3405 (let (buffer-read-only
|
|
|
3406 ;; Don't make undo records for the reversion.
|
|
|
3407 (buffer-undo-list t))
|
|
|
3408 (if revert-buffer-insert-file-contents-function
|
|
|
3409 (funcall revert-buffer-insert-file-contents-function
|
|
|
3410 file-name auto-save-p)
|
|
|
3411 (if (not (file-exists-p file-name))
|
|
|
3412 (error "File %s no longer exists!" file-name))
|
|
|
3413 ;; Bind buffer-file-name to nil
|
|
|
3414 ;; so that we don't try to lock the file.
|
|
|
3415 (let ((buffer-file-name nil))
|
|
|
3416 (or auto-save-p
|
|
|
3417 (unlock-buffer)))
|
|
|
3418 (widen)
|
|
|
3419 ;; When reading in an autosave, it's encoded using
|
|
|
3420 ;; `escape-quoted', so we need to use it. (It is always
|
|
|
3421 ;; safe to specify `escape-quoted':
|
|
|
3422 ;;
|
|
|
3423 ;; 1. If file-coding but no Mule, `escape-quoted' is
|
|
|
3424 ;; aliased to `binary'.
|
|
|
3425 ;; 2. If no file-coding, all coding systems devolve into
|
|
|
3426 ;; `binary'.
|
|
|
3427 ;; 3. ASCII and ISO8859-1 are encoded the same in both
|
|
|
3428 ;; `binary' and `escape-quoted', so they will be
|
|
|
3429 ;; compatible for the most part.)
|
|
|
3430 ;;
|
|
|
3431 ;; Otherwise, use coding-system-for-read if explicitly
|
|
|
3432 ;; given (e.g. the "Revert Buffer with Specified
|
|
|
3433 ;; Encoding" menu entries), or use the coding system
|
|
|
3434 ;; that the file was loaded as.
|
|
|
3435 (let* ((coding-system-for-read
|
|
|
3436 (if auto-save-p 'escape-quoted
|
|
|
3437 (or coding-system-for-read
|
|
|
3438 buffer-file-coding-system-when-loaded)))
|
|
|
3439 ;; If the bfcs wasn't changed from its original
|
|
|
3440 ;; value (other than possible EOL change), then we
|
|
|
3441 ;; should update it for the new coding system.
|
|
|
3442 (should-update-bfcs
|
|
|
3443 (eq (coding-system-base
|
|
|
3444 buffer-file-coding-system-when-loaded)
|
|
|
3445 (coding-system-base
|
|
|
3446 buffer-file-coding-system)))
|
|
|
3447 (old-bfcs buffer-file-coding-system)
|
|
|
3448 ;; But if the EOL was changed, match it in the new
|
|
|
3449 ;; value of bfcs.
|
|
|
3450 (adjust-eol
|
|
|
3451 (and should-update-bfcs
|
|
|
3452 (not
|
|
|
3453 (eq (get-coding-system
|
|
|
3454 buffer-file-coding-system-when-loaded)
|
|
|
3455 (get-coding-system
|
|
|
3456 buffer-file-coding-system))))))
|
|
|
3457 (insert-file-contents file-name (not auto-save-p)
|
|
|
3458 nil nil t)
|
|
|
3459 (when should-update-bfcs
|
|
|
3460 (setq buffer-file-coding-system old-bfcs)
|
|
|
3461 (set-buffer-file-coding-system
|
|
|
3462 (if adjust-eol
|
|
|
3463 (coding-system-base
|
|
|
3464 buffer-file-coding-system-when-loaded)
|
|
771
|
3465 buffer-file-coding-system-when-loaded)
|
|
819
|
3466 (not adjust-eol))))))
|
|
|
3467 (goto-char (min opoint (point-max)))
|
|
|
3468 ;; Recompute the truename in case changes in symlinks
|
|
|
3469 ;; have changed the truename.
|
|
|
3470 ;;XEmacs: already done by insert-file-contents
|
|
|
3471 ;;(setq buffer-file-truename
|
|
|
3472 ;;(abbreviate-file-name (file-truename buffer-file-name)))
|
|
|
3473 (after-find-file nil nil t t preserve-modes)
|
|
|
3474 ;; Run after-revert-hook as it was before we reverted.
|
|
|
3475 (setq-default revert-buffer-internal-hook global-hook)
|
|
|
3476 (if local-hook-p
|
|
|
3477 (progn
|
|
|
3478 (make-local-variable 'revert-buffer-internal-hook)
|
|
|
3479 (setq revert-buffer-internal-hook local-hook))
|
|
|
3480 (kill-local-variable 'revert-buffer-internal-hook))
|
|
|
3481 (run-hooks 'revert-buffer-internal-hook)))
|
|
|
3482 ((null newbuf)
|
|
|
3483 ;; The resultant buffer is identical, alter
|
|
|
3484 ;; modtime, update mods and exit
|
|
|
3485 (set-visited-file-modtime)
|
|
|
3486 (after-find-file nil nil t t t))
|
|
|
3487 (t t))
|
|
428
|
3488 t)))))
|
|
|
3489
|
|
819
|
3490 (defun revert-buffer-internal (&optional file-name)
|
|
849
|
3491 "Read contents of FILE-NAME into a buffer, and compare to current buffer.
|
|
|
3492 Return nil if identical, and the new buffer if different."
|
|
|
3493
|
|
819
|
3494 (let* ((newbuf (get-buffer-create " *revert*"))
|
|
|
3495 bmin bmax)
|
|
|
3496 (save-excursion
|
|
|
3497 (set-buffer newbuf)
|
|
826
|
3498 (with-obsolete-variable '(before-change-function after-change-function)
|
|
|
3499 (let (buffer-read-only
|
|
|
3500 (buffer-undo-list t)
|
|
|
3501 after-change-function
|
|
|
3502 after-change-functions
|
|
|
3503 before-change-function
|
|
|
3504 before-change-functions)
|
|
|
3505 (if revert-buffer-insert-file-contents-function
|
|
|
3506 (funcall revert-buffer-insert-file-contents-function
|
|
|
3507 file-name nil)
|
|
|
3508 (if (not (file-exists-p file-name))
|
|
|
3509 (error "File %s no longer exists!" file-name))
|
|
|
3510 (widen)
|
|
863
|
3511 (insert-file-contents file-name nil nil nil t)
|
|
826
|
3512 (setq bmin (point-min)
|
|
|
3513 bmax (point-max))))))
|
|
819
|
3514 (if (not (and (eq bmin (point-min))
|
|
|
3515 (eq bmax (point-max))
|
|
|
3516 (eq (compare-buffer-substrings
|
|
|
3517 newbuf bmin bmax (current-buffer) bmin bmax) 0)))
|
|
|
3518 newbuf
|
|
863
|
3519 (and (kill-buffer newbuf) nil))))
|
|
819
|
3520
|
|
1333
|
3521 ;; BEGIN SYNC WITH FSF 21.2.
|
|
|
3522
|
|
844
|
3523 (defvar recover-file-diff-program "diff"
|
|
|
3524 "Absolute or relative name of the `diff' program used by `recover-file'.")
|
|
|
3525 (defvar recover-file-diff-arguments '("-c")
|
|
|
3526 "List of arguments (switches) to pass to `diff' by `recover-file'.")
|
|
|
3527
|
|
428
|
3528 (defun recover-file (file)
|
|
|
3529 "Visit file FILE, but get contents from its last auto-save file."
|
|
|
3530 ;; Actually putting the file name in the minibuffer should be used
|
|
|
3531 ;; only rarely.
|
|
|
3532 ;; Not just because users often use the default.
|
|
|
3533 (interactive "FRecover file: ")
|
|
|
3534 (setq file (expand-file-name file))
|
|
|
3535 (let ((handler (or (find-file-name-handler file 'recover-file)
|
|
|
3536 (find-file-name-handler
|
|
|
3537 (let ((buffer-file-name file))
|
|
|
3538 (make-auto-save-file-name))
|
|
|
3539 'recover-file))))
|
|
|
3540 (if handler
|
|
|
3541 (funcall handler 'recover-file file)
|
|
464
|
3542 (if (auto-save-file-name-p (file-name-nondirectory file))
|
|
428
|
3543 (error "%s is an auto-save file" file))
|
|
|
3544 (let ((file-name (let ((buffer-file-name file))
|
|
|
3545 (make-auto-save-file-name))))
|
|
|
3546 (cond ((if (file-exists-p file)
|
|
|
3547 (not (file-newer-than-file-p file-name file))
|
|
|
3548 (not (file-exists-p file-name)))
|
|
|
3549 (error "Auto-save file %s not current" file-name))
|
|
844
|
3550 (t
|
|
|
3551 (save-window-excursion
|
|
464
|
3552 ;; XEmacs change: use insert-directory instead of
|
|
844
|
3553 ;; calling ls directly. Add option for diff.
|
|
464
|
3554 (with-output-to-temp-buffer "*Directory*"
|
|
|
3555 (buffer-disable-undo standard-output)
|
|
|
3556 (save-excursion
|
|
1346
|
3557 (let ((switches
|
|
|
3558 (declare-boundp dired-listing-switches)))
|
|
1333
|
3559 (if (file-symlink-p file)
|
|
|
3560 (setq switches (concat switches "L")))
|
|
|
3561 (set-buffer standard-output)
|
|
|
3562 ;; XEmacs had the following line, not in FSF.
|
|
|
3563 (setq default-directory (file-name-directory file))
|
|
|
3564 ;; Use insert-directory-safely, not insert-directory,
|
|
|
3565 ;; because these files might not exist. In particular,
|
|
|
3566 ;; FILE might not exist if the auto-save file was for
|
|
|
3567 ;; a buffer that didn't visit a file, such as "*mail*".
|
|
|
3568 ;; The code in v20.x called `ls' directly, so we need
|
|
|
3569 ;; to emulate what `ls' did in that case.
|
|
|
3570 (insert-directory-safely file switches)
|
|
|
3571 (insert-directory-safely file-name switches))))
|
|
844
|
3572 (block nil
|
|
|
3573 (while t
|
|
|
3574 (case (get-user-response
|
|
|
3575 nil
|
|
|
3576 ;; Formerly included file name. Useless now that
|
|
|
3577 ;; we display an ls of the files, and potentially
|
|
|
3578 ;; fills up the minibuffer, esp. with autosaves
|
|
|
3579 ;; all in one directory.
|
|
|
3580 "Recover auto save file? "
|
|
|
3581 '(("yes" "%_Yes" yes)
|
|
|
3582 ("no" "%_No" no)
|
|
|
3583 ("diff" "%_Diff" diff)))
|
|
|
3584 (no (error "Recover-file cancelled."))
|
|
|
3585 (yes
|
|
|
3586 (switch-to-buffer (find-file-noselect file t))
|
|
1333
|
3587 (let ((buffer-read-only nil)
|
|
|
3588 ;; Keep the current buffer-file-coding-system.
|
|
|
3589 (coding-system buffer-file-coding-system)
|
|
|
3590 ;; Auto-saved file shoule be read without any code conversion.
|
|
|
3591 (coding-system-for-read 'escape-quoted))
|
|
844
|
3592 (erase-buffer)
|
|
1333
|
3593 (insert-file-contents file-name nil)
|
|
|
3594 (set-buffer-file-coding-system coding-system))
|
|
844
|
3595 (after-find-file nil nil t)
|
|
|
3596 (return nil))
|
|
|
3597 (diff
|
|
|
3598 ;; rather than just diff the two files (which would
|
|
|
3599 ;; be easy), we have to deal with the fact that
|
|
|
3600 ;; they may be in different formats, since
|
|
|
3601 ;; auto-saves are always in escape-quoted. so, we
|
|
|
3602 ;; read the file into a buffer (#### should we look
|
|
|
3603 ;; at or use a file if it's already in a buffer?
|
|
|
3604 ;; maybe we would find hints as to the encoding of
|
|
|
3605 ;; the file?), then we save the resulting buffer in
|
|
|
3606 ;; escape-quoted, do the diff (between two files
|
|
|
3607 ;; both in escape-quoted) and read in the results
|
|
|
3608 ;; using coding system escape-quoted. That way, we
|
|
|
3609 ;; should get what's correct most of the time.
|
|
|
3610 (let ((buffer (generate-new-buffer "*recover*"))
|
|
|
3611 (temp
|
|
|
3612 (make-temp-name
|
|
|
3613 (concat (file-name-as-directory
|
|
|
3614 (temp-directory))
|
|
|
3615 (file-name-nondirectory file) "-"))))
|
|
|
3616 (unwind-protect
|
|
|
3617 (progn
|
|
|
3618 (save-current-buffer
|
|
|
3619 (set-buffer buffer)
|
|
|
3620 (insert-file-contents file)
|
|
|
3621 (let ((coding-system-for-write
|
|
|
3622 'escape-quoted))
|
|
|
3623 (write-region (point-min) (point-max)
|
|
|
3624 temp nil 'silent)))
|
|
|
3625 (with-output-to-temp-buffer "*Autosave Diff*"
|
|
|
3626 (buffer-disable-undo standard-output)
|
|
|
3627 (let ((coding-system-for-read
|
|
|
3628 'escape-quoted))
|
|
|
3629 (condition-case ferr
|
|
|
3630 (apply #'call-process
|
|
|
3631 recover-file-diff-program
|
|
|
3632 nil standard-output nil
|
|
|
3633 (append
|
|
|
3634 recover-file-diff-arguments
|
|
|
3635 (list temp file-name)))
|
|
|
3636 (io-error
|
|
|
3637 (save-excursion
|
|
1346
|
3638 (let ((switches
|
|
|
3639 (declare-boundp
|
|
|
3640 dired-listing-switches)))
|
|
1333
|
3641 (if (file-symlink-p file)
|
|
|
3642 (setq switches (concat switches "L")))
|
|
|
3643 (set-buffer standard-output)
|
|
|
3644 ;; XEmacs had the following line, not in FSF.
|
|
|
3645 (setq default-directory (file-name-directory file))
|
|
1346
|
3646 ;; Use insert-directory-safely,
|
|
|
3647 ;; not insert-directory, because
|
|
|
3648 ;; these files might not exist.
|
|
|
3649 ;; In particular, FILE might not
|
|
|
3650 ;; exist if the auto-save file
|
|
|
3651 ;; was for a buffer that didn't
|
|
|
3652 ;; visit a file, such as
|
|
|
3653 ;; "*mail*". The code in v20.x
|
|
|
3654 ;; called `ls' directly, so we
|
|
|
3655 ;; need to emulate what `ls' did
|
|
|
3656 ;; in that case.
|
|
1333
|
3657 (insert-directory-safely file switches)
|
|
|
3658 (insert-directory-safely file-name switches))
|
|
844
|
3659 (terpri)
|
|
|
3660 (princ "Error during diff: ")
|
|
|
3661 (display-error ferr
|
|
|
3662 standard-output)))))))
|
|
|
3663 (ignore-errors (kill-buffer buffer))
|
|
|
3664 (ignore-file-errors
|
|
|
3665 (delete-file temp)))))))))))))))
|
|
428
|
3666
|
|
|
3667 (defun recover-session ()
|
|
|
3668 "Recover auto save files from a previous Emacs session.
|
|
|
3669 This command first displays a Dired buffer showing you the
|
|
|
3670 previous sessions that you could recover from.
|
|
|
3671 To choose one, move point to the proper line and then type C-c C-c.
|
|
|
3672 Then you'll be asked about a number of files to recover."
|
|
|
3673 (interactive)
|
|
|
3674 (unless (fboundp 'dired)
|
|
|
3675 (error "recover-session requires dired"))
|
|
|
3676 (if (null auto-save-list-file-prefix)
|
|
|
3677 (error
|
|
|
3678 "You set `auto-save-list-file-prefix' to disable making session files"))
|
|
1333
|
3679 (let ((dir (file-name-directory auto-save-list-file-prefix)))
|
|
|
3680 (unless (file-directory-p dir)
|
|
|
3681 (make-directory dir t)))
|
|
851
|
3682 (let* ((auto-save-list-dir
|
|
|
3683 (file-name-directory auto-save-list-file-prefix))
|
|
|
3684 (files (directory-files
|
|
|
3685 auto-save-list-dir
|
|
|
3686 t
|
|
|
3687 (concat "^" (regexp-quote (file-name-nondirectory
|
|
|
3688 auto-save-list-file-prefix)))))
|
|
|
3689 (files (sort (delete-if-not #'Recover-session-files-from-auto-save-list-file
|
|
|
3690 files) #'file-newer-than-file-p)))
|
|
|
3691 (unless files
|
|
|
3692 (error "No sessions can be recovered now"))
|
|
|
3693 (declare-fboundp (dired (cons auto-save-list-dir files)))
|
|
1333
|
3694 (save-excursion
|
|
|
3695 (goto-char (point-min))
|
|
|
3696 (or (looking-at "Move to the session you want to recover,")
|
|
|
3697 (let ((inhibit-read-only t))
|
|
|
3698 (delete-matching-lines "^[ \t]*total.*$")
|
|
|
3699 (insert "Move to the session you want to recover,\n"
|
|
|
3700 "then type C-c C-c to select it.\n\n"
|
|
|
3701 "You can also delete some of these files;\n"
|
|
|
3702 "type d on a line to mark that file for deletion.\n\n"))))
|
|
851
|
3703 (use-local-map (let ((map (make-sparse-keymap)))
|
|
|
3704 (set-keymap-parents map (list (current-local-map)))
|
|
|
3705 map))
|
|
|
3706 (define-key (current-local-map) "\C-c\C-c" 'recover-session-finish)))
|
|
428
|
3707
|
|
851
|
3708 (defun Recover-session-files-from-auto-save-list-file (file)
|
|
|
3709 "Return the auto save files in list file FILE that are current."
|
|
|
3710 (let (files
|
|
428
|
3711 (buffer (get-buffer-create " *recover*")))
|
|
|
3712 (unwind-protect
|
|
|
3713 (save-excursion
|
|
|
3714 ;; Read in the auto-save-list file.
|
|
|
3715 (set-buffer buffer)
|
|
|
3716 (erase-buffer)
|
|
771
|
3717 (let ((coding-system-for-read 'escape-quoted))
|
|
|
3718 (insert-file-contents file))
|
|
428
|
3719 ;; Loop thru the text of that file
|
|
|
3720 ;; and get out the names of the files to recover.
|
|
|
3721 (while (not (eobp))
|
|
|
3722 (let (thisfile autofile)
|
|
|
3723 (if (eolp)
|
|
|
3724 ;; This is a pair of lines for a non-file-visiting buffer.
|
|
|
3725 ;; Get the auto-save file name and manufacture
|
|
|
3726 ;; a "visited file name" from that.
|
|
|
3727 (progn
|
|
|
3728 (forward-line 1)
|
|
|
3729 (setq autofile
|
|
|
3730 (buffer-substring-no-properties
|
|
|
3731 (point)
|
|
|
3732 (save-excursion
|
|
|
3733 (end-of-line)
|
|
|
3734 (point))))
|
|
|
3735 (setq thisfile
|
|
|
3736 (expand-file-name
|
|
|
3737 (substring
|
|
|
3738 (file-name-nondirectory autofile)
|
|
|
3739 1 -1)
|
|
|
3740 (file-name-directory autofile)))
|
|
|
3741 (forward-line 1))
|
|
|
3742 ;; This pair of lines is a file-visiting
|
|
|
3743 ;; buffer. Use the visited file name.
|
|
|
3744 (progn
|
|
|
3745 (setq thisfile
|
|
|
3746 (buffer-substring-no-properties
|
|
|
3747 (point) (progn (end-of-line) (point))))
|
|
|
3748 (forward-line 1)
|
|
|
3749 (setq autofile
|
|
|
3750 (buffer-substring-no-properties
|
|
|
3751 (point) (progn (end-of-line) (point))))
|
|
|
3752 (forward-line 1)))
|
|
|
3753 ;; Ignore a file if its auto-save file does not exist now.
|
|
|
3754 (if (file-exists-p autofile)
|
|
|
3755 (setq files (cons thisfile files)))))
|
|
851
|
3756 (setq files (nreverse files)))
|
|
428
|
3757 (kill-buffer buffer))))
|
|
|
3758
|
|
851
|
3759 (defun recover-session-finish ()
|
|
|
3760 "Choose one saved session to recover auto-save files from.
|
|
|
3761 This command is used in the special Dired buffer created by
|
|
|
3762 \\[recover-session]."
|
|
|
3763 (interactive)
|
|
|
3764 ;; Get the name of the session file to recover from.
|
|
|
3765 (let ((file (declare-fboundp (dired-get-filename))))
|
|
1346
|
3766 (declare-fboundp (dired-unmark 1))
|
|
851
|
3767 ;; #### dired-do-flagged-delete in FSF.
|
|
|
3768 ;; This version is for ange-ftp
|
|
1346
|
3769 ;;(declare-fboundp (dired-do-deletions t))
|
|
851
|
3770 ;; This version is for efs
|
|
|
3771 (declare-fboundp (dired-expunge-deletions))
|
|
|
3772 (let ((files (Recover-session-files-from-auto-save-list-file file)))
|
|
|
3773 ;; The file contains a pair of line for each auto-saved buffer.
|
|
|
3774 ;; The first line of the pair contains the visited file name
|
|
|
3775 ;; or is empty if the buffer was not visiting a file.
|
|
|
3776 ;; The second line is the auto-save file name.
|
|
|
3777 (if files
|
|
|
3778 (map-y-or-n-p "Recover %s? "
|
|
|
3779 (lambda (file)
|
|
|
3780 (condition-case nil
|
|
|
3781 (save-excursion (recover-file file))
|
|
|
3782 (error
|
|
|
3783 (lwarn 'recover 'alert
|
|
|
3784 "Failed to recover `%s'" file))))
|
|
|
3785 files
|
|
|
3786 '("file" "files" "recover"))
|
|
|
3787 (message "No files can be recovered from this session now")))))
|
|
|
3788
|
|
428
|
3789 (defun kill-some-buffers (&optional list)
|
|
|
3790 "For each buffer in LIST, ask whether to kill it.
|
|
|
3791 LIST defaults to all existing live buffers."
|
|
|
3792 (interactive)
|
|
|
3793 (if (null list)
|
|
|
3794 (setq list (buffer-list)))
|
|
|
3795 (while list
|
|
|
3796 (let* ((buffer (car list))
|
|
|
3797 (name (buffer-name buffer)))
|
|
|
3798 (and (not (string-equal name ""))
|
|
1333
|
3799 (not (eq (aref name 0) ?\ ))
|
|
428
|
3800 (yes-or-no-p
|
|
|
3801 (format
|
|
|
3802 (if (buffer-modified-p buffer)
|
|
|
3803 (gettext "Buffer %s HAS BEEN EDITED. Kill? ")
|
|
|
3804 (gettext "Buffer %s is unmodified. Kill? "))
|
|
|
3805 name))
|
|
|
3806 (kill-buffer buffer)))
|
|
|
3807 (setq list (cdr list))))
|
|
|
3808
|
|
|
3809 (defun auto-save-mode (arg)
|
|
|
3810 "Toggle auto-saving of contents of current buffer.
|
|
|
3811 With prefix argument ARG, turn auto-saving on if positive, else off."
|
|
|
3812 (interactive "P")
|
|
|
3813 (setq buffer-auto-save-file-name
|
|
|
3814 (and (if (null arg)
|
|
|
3815 (or (not buffer-auto-save-file-name)
|
|
|
3816 ;; If autosave is off because buffer has shrunk,
|
|
|
3817 ;; then toggling should turn it on.
|
|
|
3818 (< buffer-saved-size 0))
|
|
|
3819 (or (eq arg t) (listp arg) (and (integerp arg) (> arg 0))))
|
|
|
3820 (if (and buffer-file-name auto-save-visited-file-name
|
|
|
3821 (not buffer-read-only))
|
|
|
3822 buffer-file-name
|
|
|
3823 (make-auto-save-file-name))))
|
|
|
3824 ;; If -1 was stored here, to temporarily turn off saving,
|
|
|
3825 ;; turn it back on.
|
|
|
3826 (and (< buffer-saved-size 0)
|
|
|
3827 (setq buffer-saved-size 0))
|
|
|
3828 (if (interactive-p)
|
|
|
3829 (if buffer-auto-save-file-name ;; rewritten for I18N3 snarfing
|
|
|
3830 (display-message 'command "Auto-save on (in this buffer)")
|
|
|
3831 (display-message 'command "Auto-save off (in this buffer)")))
|
|
|
3832 buffer-auto-save-file-name)
|
|
|
3833
|
|
|
3834 (defun rename-auto-save-file ()
|
|
|
3835 "Adjust current buffer's auto save file name for current conditions.
|
|
|
3836 Also rename any existing auto save file, if it was made in this session."
|
|
|
3837 (let ((osave buffer-auto-save-file-name))
|
|
|
3838 (setq buffer-auto-save-file-name
|
|
|
3839 (make-auto-save-file-name))
|
|
|
3840 (if (and osave buffer-auto-save-file-name
|
|
|
3841 (not (string= buffer-auto-save-file-name buffer-file-name))
|
|
|
3842 (not (string= buffer-auto-save-file-name osave))
|
|
|
3843 (file-exists-p osave)
|
|
|
3844 (recent-auto-save-p))
|
|
|
3845 (rename-file osave buffer-auto-save-file-name t))))
|
|
|
3846
|
|
1333
|
3847 ;; END SYNC WITH FSF 21.2.
|
|
|
3848
|
|
464
|
3849 ;; make-auto-save-file-name and auto-save-file-name-p are now only in
|
|
|
3850 ;; auto-save.el.
|
|
428
|
3851
|
|
|
3852
|
|
1333
|
3853 ;; BEGIN SYNC WITH FSF 21.2.
|
|
|
3854
|
|
428
|
3855 (defun wildcard-to-regexp (wildcard)
|
|
|
3856 "Given a shell file name pattern WILDCARD, return an equivalent regexp.
|
|
|
3857 The generated regexp will match a filename iff the filename
|
|
|
3858 matches that wildcard according to shell rules. Only wildcards known
|
|
|
3859 by `sh' are supported."
|
|
|
3860 (let* ((i (string-match "[[.*+\\^$?]" wildcard))
|
|
|
3861 ;; Copy the initial run of non-special characters.
|
|
|
3862 (result (substring wildcard 0 i))
|
|
|
3863 (len (length wildcard)))
|
|
|
3864 ;; If no special characters, we're almost done.
|
|
|
3865 (if i
|
|
|
3866 (while (< i len)
|
|
|
3867 (let ((ch (aref wildcard i))
|
|
|
3868 j)
|
|
|
3869 (setq
|
|
|
3870 result
|
|
|
3871 (concat result
|
|
|
3872 (cond
|
|
1333
|
3873 ((and (eq ch ?\[)
|
|
|
3874 (< (1+ i) len)
|
|
|
3875 (eq (aref wildcard (1+ i)) ?\]))
|
|
|
3876 "\\[")
|
|
428
|
3877 ((eq ch ?\[) ; [...] maps to regexp char class
|
|
|
3878 (progn
|
|
|
3879 (setq i (1+ i))
|
|
|
3880 (concat
|
|
|
3881 (cond
|
|
|
3882 ((eq (aref wildcard i) ?!) ; [!...] -> [^...]
|
|
|
3883 (progn
|
|
|
3884 (setq i (1+ i))
|
|
|
3885 (if (eq (aref wildcard i) ?\])
|
|
|
3886 (progn
|
|
|
3887 (setq i (1+ i))
|
|
|
3888 "[^]")
|
|
|
3889 "[^")))
|
|
|
3890 ((eq (aref wildcard i) ?^)
|
|
|
3891 ;; Found "[^". Insert a `\0' character
|
|
|
3892 ;; (which cannot happen in a filename)
|
|
|
3893 ;; into the character class, so that `^'
|
|
|
3894 ;; is not the first character after `[',
|
|
|
3895 ;; and thus non-special in a regexp.
|
|
|
3896 (progn
|
|
|
3897 (setq i (1+ i))
|
|
|
3898 "[\000^"))
|
|
|
3899 ((eq (aref wildcard i) ?\])
|
|
|
3900 ;; I don't think `]' can appear in a
|
|
|
3901 ;; character class in a wildcard, but
|
|
|
3902 ;; let's be general here.
|
|
|
3903 (progn
|
|
|
3904 (setq i (1+ i))
|
|
|
3905 "[]"))
|
|
|
3906 (t "["))
|
|
|
3907 (prog1 ; copy everything upto next `]'.
|
|
|
3908 (substring wildcard
|
|
|
3909 i
|
|
|
3910 (setq j (string-match
|
|
|
3911 "]" wildcard i)))
|
|
|
3912 (setq i (if j (1- j) (1- len)))))))
|
|
|
3913 ((eq ch ?.) "\\.")
|
|
|
3914 ((eq ch ?*) "[^\000]*")
|
|
|
3915 ((eq ch ?+) "\\+")
|
|
|
3916 ((eq ch ?^) "\\^")
|
|
|
3917 ((eq ch ?$) "\\$")
|
|
|
3918 ((eq ch ?\\) "\\\\") ; probably cannot happen...
|
|
|
3919 ((eq ch ??) "[^\000]")
|
|
|
3920 (t (char-to-string ch)))))
|
|
|
3921 (setq i (1+ i)))))
|
|
|
3922 ;; Shell wildcards should match the entire filename,
|
|
|
3923 ;; not its part. Make the regexp say so.
|
|
|
3924 (concat "\\`" result "\\'")))
|
|
|
3925
|
|
|
3926 (defcustom list-directory-brief-switches "-CF"
|
|
|
3927 "*Switches for list-directory to pass to `ls' for brief listing."
|
|
|
3928 :type 'string
|
|
|
3929 :group 'dired)
|
|
|
3930
|
|
|
3931 (defcustom list-directory-verbose-switches "-l"
|
|
|
3932 "*Switches for list-directory to pass to `ls' for verbose listing,"
|
|
|
3933 :type 'string
|
|
|
3934 :group 'dired)
|
|
|
3935
|
|
1333
|
3936 (defun file-expand-wildcards (pattern &optional full)
|
|
|
3937 "Expand wildcard pattern PATTERN.
|
|
|
3938 This returns a list of file names which match the pattern.
|
|
|
3939
|
|
|
3940 If PATTERN is written as an absolute relative file name,
|
|
|
3941 the values are absolute also.
|
|
|
3942
|
|
|
3943 If PATTERN is written as a relative file name, it is interpreted
|
|
|
3944 relative to the current default directory, `default-directory'.
|
|
|
3945 The file names returned are normally also relative to the current
|
|
|
3946 default directory. However, if FULL is non-nil, they are absolute."
|
|
|
3947 (let* ((nondir (file-name-nondirectory pattern))
|
|
|
3948 (dirpart (file-name-directory pattern))
|
|
|
3949 ;; A list of all dirs that DIRPART specifies.
|
|
|
3950 ;; This can be more than one dir
|
|
|
3951 ;; if DIRPART contains wildcards.
|
|
|
3952 (dirs (if (and dirpart (string-match "[[*?]" dirpart))
|
|
|
3953 (mapcar 'file-name-as-directory
|
|
|
3954 (file-expand-wildcards (directory-file-name dirpart)))
|
|
|
3955 (list dirpart)))
|
|
|
3956 contents)
|
|
|
3957 (while dirs
|
|
|
3958 (when (or (null (car dirs)) ; Possible if DIRPART is not wild.
|
|
|
3959 (file-directory-p (directory-file-name (car dirs))))
|
|
|
3960 (let ((this-dir-contents
|
|
|
3961 ;; Filter out "." and ".."
|
|
|
3962 (delq nil
|
|
|
3963 (mapcar #'(lambda (name)
|
|
|
3964 (unless (string-match "\\`\\.\\.?\\'"
|
|
|
3965 (file-name-nondirectory name))
|
|
|
3966 name))
|
|
|
3967 (directory-files (or (car dirs) ".") full
|
|
|
3968 (wildcard-to-regexp nondir))))))
|
|
|
3969 (setq contents
|
|
|
3970 (nconc
|
|
|
3971 (if (and (car dirs) (not full))
|
|
|
3972 (mapcar (function (lambda (name) (concat (car dirs) name)))
|
|
|
3973 this-dir-contents)
|
|
|
3974 this-dir-contents)
|
|
|
3975 contents))))
|
|
|
3976 (setq dirs (cdr dirs)))
|
|
|
3977 contents))
|
|
|
3978
|
|
428
|
3979 (defun list-directory (dirname &optional verbose)
|
|
|
3980 "Display a list of files in or matching DIRNAME, a la `ls'.
|
|
|
3981 DIRNAME is globbed by the shell if necessary.
|
|
|
3982 Prefix arg (second arg if noninteractive) means supply -l switch to `ls'.
|
|
|
3983 Actions controlled by variables `list-directory-brief-switches'
|
|
|
3984 and `list-directory-verbose-switches'."
|
|
|
3985 (interactive (let ((pfx current-prefix-arg))
|
|
|
3986 (list (read-file-name (if pfx (gettext "List directory (verbose): ")
|
|
|
3987 (gettext "List directory (brief): "))
|
|
|
3988 nil default-directory nil)
|
|
|
3989 pfx)))
|
|
|
3990 (let ((switches (if verbose list-directory-verbose-switches
|
|
|
3991 list-directory-brief-switches)))
|
|
|
3992 (or dirname (setq dirname default-directory))
|
|
|
3993 (setq dirname (expand-file-name dirname))
|
|
|
3994 (with-output-to-temp-buffer "*Directory*"
|
|
|
3995 (buffer-disable-undo standard-output)
|
|
|
3996 (princ "Directory ")
|
|
|
3997 (princ dirname)
|
|
|
3998 (terpri)
|
|
|
3999 (save-excursion
|
|
|
4000 (set-buffer "*Directory*")
|
|
1333
|
4001 (setq default-directory
|
|
|
4002 (if (file-directory-p dirname)
|
|
|
4003 (file-name-as-directory dirname)
|
|
|
4004 (file-name-directory dirname)))
|
|
428
|
4005 (let ((wildcard (not (file-directory-p dirname))))
|
|
|
4006 (insert-directory dirname switches wildcard (not wildcard)))))))
|
|
|
4007
|
|
1333
|
4008 (defun shell-quote-wildcard-pattern (pattern)
|
|
|
4009 "Quote characters special to the shell in PATTERN, leave wildcards alone.
|
|
|
4010
|
|
|
4011 PATTERN is assumed to represent a file-name wildcard suitable for the
|
|
|
4012 underlying filesystem. For Unix and GNU/Linux, the characters from the
|
|
|
4013 set [ \\t\\n;<>&|()#$] are quoted with a backslash; for DOS/Windows, all
|
|
|
4014 the parts of the pattern which don't include wildcard characters are
|
|
|
4015 quoted with double quotes.
|
|
|
4016 Existing quote characters in PATTERN are left alone, so you can pass
|
|
|
4017 PATTERN that already quotes some of the special characters."
|
|
|
4018 (save-match-data
|
|
|
4019 (cond
|
|
|
4020 ((memq system-type '(ms-dos windows-nt))
|
|
|
4021 ;; DOS/Windows don't allow `"' in file names. So if the
|
|
|
4022 ;; argument has quotes, we can safely assume it is already
|
|
|
4023 ;; quoted by the caller.
|
|
|
4024 (if (or (string-match "[\"]" pattern)
|
|
|
4025 ;; We quote [&()#$'] in case their shell is a port of a
|
|
|
4026 ;; Unixy shell. We quote [,=+] because stock DOS and
|
|
|
4027 ;; Windows shells require that in some cases, such as
|
|
|
4028 ;; passing arguments to batch files that use positional
|
|
|
4029 ;; arguments like %1.
|
|
|
4030 (not (string-match "[ \t;&()#$',=+]" pattern)))
|
|
|
4031 pattern
|
|
|
4032 (let ((result "\"")
|
|
|
4033 (beg 0)
|
|
|
4034 end)
|
|
|
4035 (while (string-match "[*?]+" pattern beg)
|
|
|
4036 (setq end (match-beginning 0)
|
|
|
4037 result (concat result (substring pattern beg end)
|
|
|
4038 "\""
|
|
|
4039 (substring pattern end (match-end 0))
|
|
|
4040 "\"")
|
|
|
4041 beg (match-end 0)))
|
|
|
4042 (concat result (substring pattern beg) "\""))))
|
|
|
4043 (t
|
|
|
4044 (let ((beg 0))
|
|
|
4045 (while (string-match "[ \t\n;<>&|()#$]" pattern beg)
|
|
|
4046 (setq pattern
|
|
|
4047 (concat (substring pattern 0 (match-beginning 0))
|
|
|
4048 "\\"
|
|
|
4049 (substring pattern (match-beginning 0)))
|
|
|
4050 beg (1+ (match-end 0)))))
|
|
|
4051 pattern))))
|
|
|
4052
|
|
|
4053
|
|
428
|
4054 (defvar insert-directory-program "ls"
|
|
|
4055 "Absolute or relative name of the `ls' program used by `insert-directory'.")
|
|
|
4056
|
|
|
4057 ;; insert-directory
|
|
|
4058 ;; - must insert _exactly_one_line_ describing FILE if WILDCARD and
|
|
|
4059 ;; FULL-DIRECTORY-P is nil.
|
|
|
4060 ;; The single line of output must display FILE's name as it was
|
|
|
4061 ;; given, namely, an absolute path name.
|
|
|
4062 ;; - must insert exactly one line for each file if WILDCARD or
|
|
|
4063 ;; FULL-DIRECTORY-P is t, plus one optional "total" line
|
|
|
4064 ;; before the file lines, plus optional text after the file lines.
|
|
|
4065 ;; Lines are delimited by "\n", so filenames containing "\n" are not
|
|
|
4066 ;; allowed.
|
|
|
4067 ;; File lines should display the basename.
|
|
|
4068 ;; - must be consistent with
|
|
|
4069 ;; - functions dired-move-to-filename, (these two define what a file line is)
|
|
|
4070 ;; dired-move-to-end-of-filename,
|
|
|
4071 ;; dired-between-files, (shortcut for (not (dired-move-to-filename)))
|
|
|
4072 ;; dired-insert-headerline
|
|
|
4073 ;; dired-after-subdir-garbage (defines what a "total" line is)
|
|
|
4074 ;; - variable dired-subdir-regexp
|
|
1333
|
4075
|
|
|
4076 ;; END SYNC WITH FSF 21.2.
|
|
|
4077
|
|
428
|
4078 (defun insert-directory (file switches &optional wildcard full-directory-p)
|
|
|
4079 "Insert directory listing for FILE, formatted according to SWITCHES.
|
|
|
4080 Leaves point after the inserted text.
|
|
|
4081 SWITCHES may be a string of options, or a list of strings.
|
|
|
4082 Optional third arg WILDCARD means treat FILE as shell wildcard.
|
|
|
4083 Optional fourth arg FULL-DIRECTORY-P means file is a directory and
|
|
|
4084 switches do not contain `d', so that a full listing is expected.
|
|
|
4085
|
|
|
4086 This works by running a directory listing program
|
|
|
4087 whose name is in the variable `insert-directory-program'.
|
|
|
4088 If WILDCARD, it also runs the shell specified by `shell-file-name'."
|
|
|
4089 ;; We need the directory in order to find the right handler.
|
|
|
4090 (let ((handler (find-file-name-handler (expand-file-name file)
|
|
|
4091 'insert-directory)))
|
|
|
4092 (if handler
|
|
|
4093 (funcall handler 'insert-directory file switches
|
|
|
4094 wildcard full-directory-p)
|
|
|
4095 (cond
|
|
464
|
4096 ;; [mswindows-insert-directory should be called
|
|
|
4097 ;; nt-insert-directory - kkm]. not true any more according to
|
|
|
4098 ;; my new naming scheme. --ben
|
|
428
|
4099 ((and (fboundp 'mswindows-insert-directory)
|
|
|
4100 (eq system-type 'windows-nt))
|
|
613
|
4101 (declare-fboundp (mswindows-insert-directory
|
|
|
4102 file switches wildcard full-directory-p)))
|
|
428
|
4103 (t
|
|
|
4104 (if wildcard
|
|
|
4105 ;; Run ls in the directory of the file pattern we asked for.
|
|
|
4106 (let ((default-directory
|
|
|
4107 (if (file-name-absolute-p file)
|
|
|
4108 (file-name-directory file)
|
|
|
4109 (file-name-directory (expand-file-name file))))
|
|
|
4110 (pattern (file-name-nondirectory file))
|
|
444
|
4111 (start 0))
|
|
428
|
4112 ;; Quote some characters that have special meanings in shells;
|
|
|
4113 ;; but don't quote the wildcards--we want them to be special.
|
|
|
4114 ;; We also currently don't quote the quoting characters
|
|
|
4115 ;; in case people want to use them explicitly to quote
|
|
|
4116 ;; wildcard characters.
|
|
|
4117 ;;#### Unix-specific
|
|
444
|
4118 (while (string-match "[ \t\n;<>&|()#$]" pattern start)
|
|
428
|
4119 (setq pattern
|
|
|
4120 (concat (substring pattern 0 (match-beginning 0))
|
|
|
4121 "\\"
|
|
|
4122 (substring pattern (match-beginning 0)))
|
|
444
|
4123 start (1+ (match-end 0))))
|
|
428
|
4124 (call-process shell-file-name nil t nil
|
|
|
4125 "-c" (concat "\\" ;; Disregard shell aliases!
|
|
|
4126 insert-directory-program
|
|
|
4127 " -d "
|
|
|
4128 (if (stringp switches)
|
|
|
4129 switches
|
|
|
4130 (mapconcat 'identity switches " "))
|
|
|
4131 " "
|
|
|
4132 pattern)))
|
|
|
4133 ;; SunOS 4.1.3, SVr4 and others need the "." to list the
|
|
|
4134 ;; directory if FILE is a symbolic link.
|
|
|
4135 (apply 'call-process
|
|
|
4136 insert-directory-program nil t nil
|
|
|
4137 (let (list)
|
|
|
4138 (if (listp switches)
|
|
|
4139 (setq list switches)
|
|
|
4140 (if (not (equal switches ""))
|
|
|
4141 (progn
|
|
|
4142 ;; Split the switches at any spaces
|
|
|
4143 ;; so we can pass separate options as separate args.
|
|
|
4144 (while (string-match " " switches)
|
|
|
4145 (setq list (cons (substring switches 0 (match-beginning 0))
|
|
|
4146 list)
|
|
|
4147 switches (substring switches (match-end 0))))
|
|
|
4148 (setq list (cons switches list)))))
|
|
|
4149 (append list
|
|
|
4150 (list
|
|
|
4151 (if full-directory-p
|
|
|
4152 (concat (file-name-as-directory file)
|
|
|
4153 ;;#### Unix-specific
|
|
|
4154 ".")
|
|
|
4155 file)))))))))))
|
|
|
4156
|
|
1333
|
4157 ;; BEGIN SYNC WITH FSF 21.2.
|
|
|
4158
|
|
|
4159 (defun insert-directory-safely (file switches
|
|
|
4160 &optional wildcard full-directory-p)
|
|
|
4161 "Insert directory listing for FILE, formatted according to SWITCHES.
|
|
|
4162
|
|
|
4163 Like `insert-directory', but if FILE does not exist, it inserts a
|
|
|
4164 message to that effect instead of signaling an error."
|
|
|
4165 (if (file-exists-p file)
|
|
|
4166 (insert-directory file switches wildcard full-directory-p)
|
|
|
4167 ;; Simulate the message printed by `ls'.
|
|
|
4168 (insert (format "%s: No such file or directory\n" file))))
|
|
|
4169
|
|
428
|
4170 (defvar kill-emacs-query-functions nil
|
|
|
4171 "Functions to call with no arguments to query about killing XEmacs.
|
|
|
4172 If any of these functions returns nil, killing Emacs is cancelled.
|
|
|
4173 `save-buffers-kill-emacs' (\\[save-buffers-kill-emacs]) calls these functions,
|
|
|
4174 but `kill-emacs', the low level primitive, does not.
|
|
|
4175 See also `kill-emacs-hook'.")
|
|
|
4176
|
|
1333
|
4177 (defcustom confirm-kill-emacs nil
|
|
|
4178 "How to ask for confirmation when leaving Emacs.
|
|
|
4179 If nil, the default, don't ask at all. If the value is non-nil, it should
|
|
|
4180 be a predicate function such as `yes-or-no-p'."
|
|
|
4181 :type '(choice (const :tag "Ask with yes-or-no-p" yes-or-no-p)
|
|
|
4182 (const :tag "Ask with y-or-n-p" y-or-n-p)
|
|
|
4183 (const :tag "Don't confirm" nil))
|
|
|
4184 :group 'emacs
|
|
|
4185 ;:version "21.1"
|
|
|
4186 )
|
|
|
4187
|
|
428
|
4188 (defun save-buffers-kill-emacs (&optional arg)
|
|
|
4189 "Offer to save each buffer, then kill this XEmacs process.
|
|
|
4190 With prefix arg, silently save all file-visiting buffers, then kill."
|
|
|
4191 (interactive "P")
|
|
|
4192 (save-some-buffers arg t)
|
|
|
4193 (and (or (not (memq t (mapcar #'(lambda (buf) (and (buffer-file-name buf)
|
|
|
4194 (buffer-modified-p buf)))
|
|
|
4195 (buffer-list))))
|
|
|
4196 (yes-or-no-p "Modified buffers exist; exit anyway? "))
|
|
|
4197 (or (not (fboundp 'process-list))
|
|
|
4198 ;; process-list is not defined on VMS.
|
|
|
4199 (let ((processes (process-list))
|
|
|
4200 active)
|
|
|
4201 (while processes
|
|
|
4202 (and (memq (process-status (car processes)) '(run stop open))
|
|
|
4203 (let ((val (process-kill-without-query (car processes))))
|
|
|
4204 (process-kill-without-query (car processes) val)
|
|
|
4205 val)
|
|
|
4206 (setq active t))
|
|
|
4207 (setq processes (cdr processes)))
|
|
|
4208 (or
|
|
|
4209 (not active)
|
|
|
4210 (save-excursion
|
|
|
4211 (save-window-excursion
|
|
|
4212 (delete-other-windows)
|
|
|
4213 (list-processes)
|
|
|
4214 (yes-or-no-p
|
|
|
4215 "Active processes exist; kill them and exit anyway? "))))))
|
|
|
4216 ;; Query the user for other things, perhaps.
|
|
|
4217 (run-hook-with-args-until-failure 'kill-emacs-query-functions)
|
|
1333
|
4218 (or (null confirm-kill-emacs)
|
|
|
4219 (funcall confirm-kill-emacs "Really exit Emacs? "))
|
|
428
|
4220 (kill-emacs)))
|
|
|
4221
|
|
|
4222 (defun symlink-expand-file-name (filename)
|
|
|
4223 "If FILENAME is a symlink, return its non-symlink equivalent.
|
|
|
4224 Unlike `file-truename', this doesn't chase symlinks in directory
|
|
|
4225 components of the file or expand a relative pathname into an
|
|
|
4226 absolute one."
|
|
|
4227 (let ((count 20))
|
|
|
4228 (while (and (> count 0) (file-symlink-p filename))
|
|
|
4229 (setq filename (file-symlink-p filename)
|
|
|
4230 count (1- count)))
|
|
|
4231 (if (> count 0)
|
|
|
4232 filename
|
|
|
4233 (error "Apparently circular symlink path"))))
|
|
|
4234
|
|
|
4235 ;; Suggested by Michael Kifer <kifer@CS.SunySB.EDU>
|
|
|
4236 (defun file-remote-p (file-name)
|
|
|
4237 "Test whether FILE-NAME is looked for on a remote system."
|
|
776
|
4238 (cond ((not (declare-boundp allow-remote-paths)) nil)
|
|
502
|
4239 ((fboundp 'ange-ftp-ftp-path)
|
|
|
4240 (declare-fboundp (ange-ftp-ftp-path file-name)))
|
|
|
4241 ((fboundp 'efs-ftp-path)
|
|
|
4242 (declare-fboundp (efs-ftp-path file-name)))
|
|
428
|
4243 (t nil)))
|
|
|
4244
|
|
1333
|
4245
|
|
|
4246 ;; We use /: as a prefix to "quote" a file name
|
|
|
4247 ;; so that magic file name handlers will not apply to it.
|
|
|
4248
|
|
|
4249 (setq file-name-handler-alist
|
|
|
4250 (cons '("\\`/:" . file-name-non-special)
|
|
|
4251 file-name-handler-alist))
|
|
|
4252
|
|
|
4253 ;; We depend on being the last handler on the list,
|
|
|
4254 ;; so that anything else which does need handling
|
|
|
4255 ;; has been handled already.
|
|
|
4256 ;; So it is safe for us to inhibit *all* magic file name handlers.
|
|
|
4257
|
|
|
4258 (defun file-name-non-special (operation &rest arguments)
|
|
|
4259 (let ((file-name-handler-alist nil)
|
|
|
4260 (default-directory
|
|
|
4261 (if (eq operation 'insert-directory)
|
|
|
4262 (directory-file-name
|
|
|
4263 (expand-file-name
|
|
|
4264 (unhandled-file-name-directory default-directory)))
|
|
|
4265 default-directory))
|
|
|
4266 ;; Get a list of the indices of the args which are file names.
|
|
|
4267 (file-arg-indices
|
|
|
4268 (cdr (or (assq operation
|
|
|
4269 ;; The first four are special because they
|
|
|
4270 ;; return a file name. We want to include the /:
|
|
|
4271 ;; in the return value.
|
|
|
4272 ;; So just avoid stripping it in the first place.
|
|
|
4273 '((expand-file-name . nil)
|
|
|
4274 ;; `identity' means just return the first arg
|
|
|
4275 ;; as stripped of its quoting.
|
|
|
4276 (substitute-in-file-name . identity)
|
|
|
4277 (file-name-directory . nil)
|
|
|
4278 (file-name-as-directory . nil)
|
|
|
4279 (directory-file-name . nil)
|
|
|
4280 (file-name-completion 0 1)
|
|
|
4281 (file-name-all-completions 0 1)
|
|
|
4282 (rename-file 0 1)
|
|
|
4283 (copy-file 0 1)
|
|
|
4284 (make-symbolic-link 0 1)
|
|
|
4285 (add-name-to-file 0 1)))
|
|
|
4286 ;; For all other operations, treat the first argument only
|
|
|
4287 ;; as the file name.
|
|
|
4288 '(nil 0))))
|
|
|
4289 ;; Copy ARGUMENTS so we can replace elements in it.
|
|
|
4290 (arguments (copy-sequence arguments)))
|
|
|
4291 ;; Strip off the /: from the file names that have this handler.
|
|
|
4292 (save-match-data
|
|
|
4293 (while (consp file-arg-indices)
|
|
|
4294 (let ((pair (nthcdr (car file-arg-indices) arguments)))
|
|
|
4295 (and (car pair)
|
|
|
4296 (string-match "\\`/:" (car pair))
|
|
|
4297 (setcar pair
|
|
|
4298 (if (= (length (car pair)) 2)
|
|
|
4299 "/"
|
|
|
4300 (substring (car pair) 2)))))
|
|
|
4301 (setq file-arg-indices (cdr file-arg-indices))))
|
|
|
4302 (if (eq file-arg-indices 'identity)
|
|
|
4303 (car arguments)
|
|
|
4304 (apply operation arguments))))
|
|
|
4305
|
|
|
4306 ;; END SYNC WITH FSF 21.2.
|
|
428
|
4307
|
|
|
4308 ;;; files.el ends here
|
