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209
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1 ;;; packages.el --- Low level support for XEmacs packages
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2
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3 ;; Copyright (C) 1997 Free Software Foundation, Inc.
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4
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5 ;; Author: Steven L Baur <steve@altair.xemacs.org>
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235
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6 ;; Maintainer: Steven L Baur <steve@altair.xemacs.org>
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209
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7 ;; Keywords: internal, lisp, dumped
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8
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9 ;; This file is part of XEmacs.
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10
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11 ;; XEmacs is free software; you can redistribute it and/or modify it
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12 ;; under the terms of the GNU General Public License as published by
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13 ;; the Free Software Foundation; either version 2, or (at your option)
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14 ;; any later version.
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15
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16 ;; XEmacs is distributed in the hope that it will be useful, but
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17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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19 ;; General Public License for more details.
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20
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21 ;; You should have received a copy of the GNU General Public License
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22 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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23 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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24 ;; 02111-1307, USA.
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25
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26 ;;; Synched up with: Not in FSF
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27
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28 ;;; Commentary:
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29
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30 ;; This file is dumped with XEmacs.
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31
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32 ;; This file provides low level facilities for XEmacs startup --
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33 ;; particularly regarding the package setup. This code has to run in
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34 ;; what we call "bare temacs" -- i.e. XEmacs without the usual Lisp
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35 ;; environment. Pay special attention:
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36
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37 ;; - not to use the `lambda' macro. Use #'(lambda ...) instead.
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38 ;; (this goes for any package loaded before `subr.el'.)
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39 ;;
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40 ;; - not to use macros, because they are not yet available (and this
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41 ;; file must be loadable uncompiled.) This rules out CL-style
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42 ;; macros like `when', for instance.
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43 ;;
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44 ;; - not to use `defcustom'. If you must add user-customizable
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45 ;; variables here, use `defvar', and add the variable to
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46 ;; `cus-start.el'.
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47
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48 ;; Because of all this, make sure that the stuff you put here really
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49 ;; belongs here.
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50
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267
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51 ;; This file requires find-paths.el.
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209
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52
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53 ;;; Code:
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54
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227
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55 ;;; Package versioning
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56
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57 (defvar packages-package-list nil
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58 "database of loaded packages and version numbers")
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59
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267
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60 (defvar early-packages nil
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61 "Packages early in the load path.")
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62
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63 (defvar early-package-load-path nil
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64 "Load path for packages early in the load path.")
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65
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272
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66 (defvar late-packages nil
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267
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67 "Packages late in the load path.")
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68
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69 (defvar late-package-load-path nil
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70 "Load path for packages late in the load path.")
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71
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272
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72 (defvar last-packages nil
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73 "Packages last in the load path.")
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74
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75 (defvar last-package-load-path nil
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76 "Load path for packages last in the load path.")
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77
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274
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78 (defvar package-locations
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79 (list
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80 (list "~/.xemacs" 'early #'(lambda () t))
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81 (list "mule-packages" 'late #'(lambda () (featurep 'mule)))
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82 (list "packages" 'late #'(lambda () t))
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83 (list "infodock-packages" 'late #'(lambda () (featurep 'infodock))))
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84 "Locations of the various package directories.
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85 This is a list each of whose elements describes one directory.
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86 A directory description is a three-element list.
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87 The first element is either an absolute path or a subdirectory
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88 in the XEmacs hierarchy.
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89 The second component is one of the symbols EARLY, LATE, LAST,
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90 depending on the load-path segment the hierarchy is supposed to
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91 show up in.
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92 The third component is a thunk which, if it returns NIL, causes
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93 the directory to be ignored.")
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94
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235
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95 (defun package-get-key-1 (info key)
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96 "Locate keyword `key' in list."
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97 (cond ((null info)
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98 nil)
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99 ((eq (car info) key)
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100 (nth 1 info))
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101 (t (package-get-key-1 (cddr info) key))))
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102
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103 (defun package-get-key (name key)
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104 "Get info `key' from package `name'."
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105 (let ((info (assq name packages-package-list)))
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106 (when info
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107 (package-get-key-1 (cdr info) key))))
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108
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109 (defun package-provide (name &rest attributes)
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110 (let ((info (if (and attributes (floatp (car attributes)))
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111 (list :version (car attributes))
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112 attributes)))
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113 (remassq name packages-package-list)
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114 (setq packages-package-list
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115 (cons (cons name info) packages-package-list))))
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227
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116
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117 (defun package-require (name version)
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118 (let ((pkg (assq name packages-package-list)))
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119 (cond ((null pkg)
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120 (error "Package %s has not been loaded into this XEmacsen"
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121 name))
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239
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122 ((< (package-get-key name :version) version)
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227
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123 (error "Need version %g of package %s, got version %g"
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124 version name (cdr pkg)))
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125 (t t))))
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126
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127 ;;; Build time stuff
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128
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209
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129 (defvar autoload-file-name "auto-autoloads.el"
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130 "Filename that autoloads are expected to be found in.")
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131
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132 (defvar packages-hardcoded-lisp
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133 '(
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253
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134 #+infodock "id-vers"
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135 #+infodock "easymenu-id-xemacs"
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209
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136 )
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137 "Lisp packages that are always dumped with XEmacs")
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138
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139 (defvar packages-useful-lisp
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140 '("bytecomp"
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141 "byte-optimize"
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142 "shadow"
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143 "cl-macs")
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144 "Lisp packages that need early byte compilation.")
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145
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146 (defvar packages-unbytecompiled-lisp
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147 '("paths.el"
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227
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148 "dumped-lisp.el"
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149 "dumped-pkg-lisp.el"
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261
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150 "version.el"
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151 "Installation.el")
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209
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152 "Lisp packages that should not be byte compiled.")
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153
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154
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155 ;; Copied from help.el, could possibly move it to here permanently.
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156 ;; Unlike the FSF version, our `locate-library' uses the `locate-file'
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157 ;; primitive, which should make it lightning-fast.
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158
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159 (defun locate-library (library &optional nosuffix path interactive-call)
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160 "Show the precise file name of Emacs library LIBRARY.
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161 This command searches the directories in `load-path' like `M-x load-library'
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162 to find the file that `M-x load-library RET LIBRARY RET' would load.
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163 Optional second arg NOSUFFIX non-nil means don't add suffixes `.elc' or `.el'
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164 to the specified name LIBRARY.
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165
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166 If the optional third arg PATH is specified, that list of directories
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167 is used instead of `load-path'."
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168 (interactive (list (read-string "Locate library: ")
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169 nil nil
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170 t))
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171 (let ((result
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172 (locate-file
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173 library
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174 (or path load-path)
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175 (cond ((or (rassq 'jka-compr-handler file-name-handler-alist)
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176 (and (boundp 'find-file-hooks)
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177 (member 'crypt-find-file-hook find-file-hooks)))
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178 ;; Compression involved.
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179 (if nosuffix
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180 ":.gz:.Z"
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181 ".elc:.elc.gz:elc.Z:.el:.el.gz:.el.Z::.gz:.Z"))
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182 (t
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183 ;; No compression.
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184 (if nosuffix
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185 ""
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186 ".elc:.el:")))
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187 4)))
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188 (and interactive-call
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189 (if result
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190 (message "Library is file %s" result)
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191 (message "No library %s in search path" library)))
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192 result))
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193
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194 (defun packages-add-suffix (str)
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195 (if (null (string-match "\\.el\\'" str))
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196 (concat str ".elc")
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197 str))
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198
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235
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199 (defun packages-list-autoloads-path ()
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209
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200 "List autoloads from precomputed load-path."
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201 (let ((path load-path)
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202 autoloads)
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203 (while path
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204 (if (file-exists-p (concat (car path)
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205 autoload-file-name))
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206 (setq autoloads (cons (concat (car path)
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207 autoload-file-name)
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208 autoloads)))
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209 (setq path (cdr path)))
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210 autoloads))
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211
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235
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212 (defun packages-list-autoloads ()
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209
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213 "List autoload files in (what will be) the normal lisp search path.
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214 This function is used during build to find where the global symbol files so
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215 they can be perused for their useful information."
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216 ;; Source directory may not be initialized yet.
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217 ;; (print (prin1-to-string load-path))
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218 (if (null source-directory)
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215
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219 (setq source-directory (concat (car load-path) "./")))
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235
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220 (let ((files (directory-files (file-name-as-directory source-directory)
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221 t ".*"))
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209
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222 file autolist)
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215
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223 ;; (print (prin1-to-string source-directory))
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224 ;; (print (prin1-to-string files))
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209
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225 (while (setq file (car-safe files))
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226 (if (and (file-directory-p file)
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227 (file-exists-p (concat file "/" autoload-file-name)))
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228 (setq autolist (cons (concat file "/" autoload-file-name)
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229 autolist)))
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230 (setq files (cdr files)))
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231 autolist))
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232
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235
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233 ;; The following function cannot be called from a bare temacs
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234 (defun packages-new-autoloads ()
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235 "Return autoloads files that have been added or modified since XEmacs dump."
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236 (require 'loadhist)
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237 (let ((me (concat invocation-directory invocation-name))
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238 (path load-path)
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239 result dir)
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240 (while path
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241 (setq dir (file-truename (car path)))
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242 (let ((autoload-file (file-name-sans-extension (concat
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243 dir
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244 autoload-file-name))))
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245 ;; Check for:
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246 ;; 1. An auto-autoload file that hasn't provided a feature (because
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247 ;; it has been installed since XEmacs was dumped).
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248 ;; 2. auto-autoload.el being newer than the executable
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249 ;; 3. auto-autoload.elc being newer than the executable (the .el
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250 ;; could be missing or compressed)
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251 (when (or (and (null (file-provides autoload-file))
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252 (or (file-exists-p (concat autoload-file ".elc"))
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253 (file-exists-p (concat autoload-file ".el"))))
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254 (and (file-newer-than-file-p (concat autoload-file ".el") me)
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255 (setq autoload-file (concat autoload-file ".el")))
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256 (and (file-newer-than-file-p (concat autoload-file
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257 ".elc")
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258 me)
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259 (setq autoload-file (concat autoload-file ".elc"))))
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260 (push autoload-file result)))
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261 (setq path (cdr path)))
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262 result))
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263
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264 ;; The following function cannot be called from a bare temacs
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265 (defun packages-reload-autoloads ()
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266 "Reload new or updated auto-autoloads files.
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267 This is an extremely dangerous function to call after the user-init-files
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268 is run. Don't call it or you'll be sorry."
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269 (let ((autoload-list (packages-new-autoloads)))
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270 (while autoload-list
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271 (let* ((autoload-file (car autoload-list))
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272 (feature (car-safe (file-provides autoload-file))))
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273 (when feature
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274 ;; (message "(unload-feature %S)" feature)
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275 (unload-feature feature))
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237
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276 (condition-case nil
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277 (load autoload-file)
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278 (t nil)))
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235
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279 (setq autoload-list (cdr autoload-list)))))
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280
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281 ;; The following function cannot be called from a bare temacs
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282 (defun packages-reload-dumped-lisp ()
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283 "Reload new or updated dumped lisp files (with exceptions).
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284 This is an extremely dangerous function to call at any time."
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285 ;; Nothing for the moment
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286 nil)
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287
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209
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288 ;; Data-directory is really a list now. Provide something to search it for
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289 ;; directories.
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290
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291 (defun locate-data-directory (name &optional dir-list)
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292 "Locate a directory in a search path DIR-LIST (a list of directories).
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293 If no DIR-LIST is supplied, it defaults to `data-directory-list'."
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294 (unless dir-list
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295 (setq dir-list data-directory-list))
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296 (let (found found-dir)
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297 (while (and (null found-dir) dir-list)
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298 (setq found (concat (car dir-list) name "/")
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299 found-dir (file-directory-p found))
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300 (or found-dir
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301 (setq found nil))
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302 (setq dir-list (cdr dir-list)))
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303 found))
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304
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215
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305 ;; Data-directory is really a list now. Provide something to search it for
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306 ;; files.
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307
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308 (defun locate-data-file (name &optional dir-list)
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309 "Locate a file in a search path DIR-LIST (a list of directories).
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239
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310 If no DIR-LIST is supplied, it defaults to `data-directory-list'.
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311 This function is basically a wrapper over `locate-file'."
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215
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312 (unless dir-list
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313 (setq dir-list data-directory-list))
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239
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314 (locate-file name dir-list))
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215
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315
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267
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316 ;; Path setup
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317
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274
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318 (defun packages-find-package-directories (roots base)
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319 "Find a set of package directories."
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320 (let ((version-directory (paths-find-version-directory roots base))
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321 (site-directory (paths-find-site-directory roots base)))
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322 (paths-uniq-append
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323 (and version-directory (list version-directory))
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324 (and site-directory (list site-directory)))))
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267
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325
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326 (defvar packages-special-bases '("etc" "info" "lisp" "lib-src" "bin")
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327 "Special subdirectories of packages.")
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328
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329 (defun packages-find-packages-in-directories (directories)
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330 "Find all packages underneath directories in DIRECTORIES."
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331 (paths-find-recursive-path directories
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332 (append paths-version-control-bases
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333 packages-special-bases)))
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334
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335 (defun packages-split-path (path)
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274
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336 "Split PATH at \"/\", return pair with two components.
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267
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337 The second component is shared with PATH."
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272
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338 (let ((reverse-tail '())
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339 (rest path))
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274
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340 (while (and rest (null (string-equal "/" (car rest))))
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272
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341 (setq reverse-tail (cons (car rest) reverse-tail))
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342 (setq rest (cdr rest)))
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343 (if (null rest)
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344 (cons path nil)
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345 (cons (nreverse reverse-tail) (cdr rest)))))
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267
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346
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274
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347 (defun packages-split-package-path (package-path)
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348 "Split up PACKAGE-PATH into early, late and last components.
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349 The separation is by \"/\" components.
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272
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350 This returns (LIST EARLY-PACKAGES LATE-PACKAGES LAST-PACKAGES)."
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274
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351 ;; When in doubt, it's late
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352 (let* ((stuff (packages-split-path package-path))
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353 (early (and (cdr stuff) (car stuff)))
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354 (late+last (or (cdr stuff) (car stuff)))
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355 (stuff (packages-split-path late+last))
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356 (late (car stuff))
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357 (last (cdr stuff)))
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358 (list (packages-find-packages-in-directories early)
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359 (packages-find-packages-in-directories late)
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360 (packages-find-packages-in-directories last))))
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361
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362 (defun packages-deconstruct (list consumer)
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363 "Deconstruct LIST and feed it to CONSUMER."
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364 (apply consumer list))
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365
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366 (defun packages-find-packages-by-name (roots name)
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367 "Find a package hierarchy by its name."
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368 (packages-find-packages-in-directories
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369 (if (and (file-name-absolute-p name)
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370 (file-name-directory (expand-file-name name)))
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371 (list (file-name-as-directory (expand-file-name name)))
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372 (packages-find-package-directories roots name))))
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373
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374 (defun packages-find-packages-at-time
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375 (roots package-locations time &optional default)
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376 "Find packages at given time.
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377 For the format of PACKAGE-LOCATIONS, see the global variable of the same name.
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378 TIME is either 'EARLY, 'LATE, or 'LAST.
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379 DEFAULT is a default list of packages."
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380 (let ((packages '()))
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381 (while package-locations
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382 (packages-deconstruct
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383 (car package-locations)
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384 #'(lambda (name a-time thunk)
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385 (if (and (eq time a-time)
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386 (funcall thunk))
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387 (setq packages
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388 (nconc packages
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389 (packages-find-packages-by-name roots name))))))
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390 (setq package-locations (cdr package-locations)))
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391 (paths-uniq-append packages
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392 default)))
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393
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394 (defun packages-find-packages (roots &optional inhibit)
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395 "Find the packages."
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267
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396 (if inhibit
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272
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397 (list '() '() '())
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274
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398 (let ((envvar-value (getenv "EMACSPACKAGEPATH")))
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399 (if envvar-value
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400 (packages-split-package-path envvar-value)
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401 (packages-deconstruct
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402 (packages-split-package-path configure-package-path)
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403 #'(lambda (configure-early-packages
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404 configure-late-packages
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405 configure-last-packages)
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406 (list (packages-find-packages-at-time roots package-locations 'early
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407 configure-early-packages)
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408 (packages-find-packages-at-time roots package-locations 'late
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409 configure-late-packages)
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410 (packages-find-packages-at-time roots package-locations 'last
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411 configure-last-packages))))))))
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267
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412
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413 (defun packages-find-package-library-path (packages suffixes)
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414 "Construct a path into a component of the packages hierarchy.
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415 PACKAGES is a list of package directories.
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416 SUFFIXES is a list of names of package subdirectories to look for."
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417 (let ((directories
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418 (apply
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419 #'append
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420 (mapcar #'(lambda (package)
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421 (mapcar #'(lambda (suffix)
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422 (concat package suffix))
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423 suffixes))
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424 packages))))
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425 (paths-directories-which-exist directories)))
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426
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427 (defun packages-find-package-load-path (packages)
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428 "Construct the load-path component for packages.
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429 PACKAGES is a list of package directories."
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430 (paths-find-recursive-load-path
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431 (packages-find-package-library-path packages '("lisp/"))))
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432
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433 (defun packages-find-package-exec-path (packages)
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434 (packages-find-package-library-path packages
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435 (list (concat "bin/" system-configuration "/")
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436 "lib-src/")))
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437
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438 (defun packages-find-package-info-path (packages)
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439 (packages-find-package-library-path packages '("info/")))
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440
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441 (defun packages-find-package-data-path (packages)
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442 (packages-find-package-library-path packages '("etc/")))
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443
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444 ;; Loading package initialization files
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445
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446 (defun packages-load-package-lisps (package-load-path base)
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447 "Load all Lisp files of a certain name along a load path.
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448 BASE is the base name of the files."
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449 (mapc #'(lambda (dir)
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450 (let ((file-name (expand-file-name base dir)))
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451 (if (file-exists-p file-name)
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452 (condition-case error
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453 (load file-name)
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454 (error
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455 (warn (format "Autoload error in: %s:\n\t%s"
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456 file-name
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457 (with-output-to-string
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458 (display-error error nil)))))))))
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459 package-load-path))
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460
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461 (defun packages-load-package-auto-autoloads (package-load-path)
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462 "Load auto-autoload files along a load path."
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463 (packages-load-package-lisps package-load-path
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464 (file-name-sans-extension autoload-file-name)))
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465
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466 (defun packages-handle-package-dumped-lisps (handle package-load-path)
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467 "Load dumped-lisp.el files along a load path.
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468 Call HANDLE on each file off definitions of PACKAGE-LISP there."
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469 (mapc #'(lambda (dir)
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470 (let ((file-name (expand-file-name "dumped-lisp.el" dir)))
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471 (if (file-exists-p file-name)
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|
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472 (let (package-lisp
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473 ;; 20.4 packages could set this
|
|
|
474 preloaded-file-list)
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|
|
475 (load file-name)
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|
|
476 ;; dumped-lisp.el could have set this ...
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|
|
477 (if package-lisp
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|
|
478 (mapc #'(lambda (base)
|
|
272
|
479 (funcall handle base))
|
|
267
|
480 package-lisp))))))
|
|
|
481 package-load-path))
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482
|
|
|
483 (defun packages-load-package-dumped-lisps (package-load-path)
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|
|
484 "Load dumped-lisp.el files along a load path.
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|
|
485 Also load files off PACKAGE-LISP definitions there"
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|
|
486 (packages-handle-package-dumped-lisps #'load package-load-path))
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|
487
|
|
|
488 (defun packages-collect-package-dumped-lisps (package-load-path)
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489 "Load dumped-lisp.el files along a load path.
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|
|
490 Return list of files off PACKAGE-LISP definitions there"
|
|
|
491 (let ((*files* '()))
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|
|
492 (packages-handle-package-dumped-lisps
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|
|
493 #'(lambda (file)
|
|
272
|
494 (setq *files* (cons file *files*)))
|
|
267
|
495 package-load-path)
|
|
|
496 (reverse *files*)))
|
|
209
|
497
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498 (provide 'packages)
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499
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500 ;;; packages.el ends here
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