lisp/cus-start.el

   1 ;;; cus-start.el --- define customization properties of builtins
   2
   3 ;; Copyright (C) 1997, 1999-2015 Free Software Foundation, Inc.
   4
   5 ;; Author: Per Abrahamsen <abraham@dina.kvl.dk>
   6 ;; Keywords: internal
   7 ;; Package: emacs
   8
   9 ;; This file is part of GNU Emacs.
  10
  11 ;; GNU Emacs is free software: you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation, either version 3 of the License, or
  14 ;; (at your option) any later version.
  15
  16 ;; GNU Emacs is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 ;;; Commentary:
  25
  26 ;; This file adds customize support for built-in variables.
  27
  28 ;; While dumping Emacs, this file is loaded, but it only records
  29 ;; the standard values; it does not do the rest of the job.
  30 ;; Later on, if the user makes a customization buffer,
  31 ;; this file is loaded again with (require 'cus-start);
  32 ;; then it does the whole job.
  33
  34 ;;; Code:
  35
  36 ;; Elements of this list have the form:
  37 ;; SYMBOL GROUP TYPE VERSION REST...
  38 ;; SYMBOL is the name of the variable.
  39 ;; GROUP is the custom group to which it belongs (may also be a list
  40 ;; of groups)
  41 ;; TYPE is the defcustom :type.
  42 ;; VERSION is the defcustom :version (or nil).
  43 ;; REST is a set of :KEYWORD VALUE pairs.  Accepted :KEYWORDs are:
  44 ;; :standard - standard value for SYMBOL (else use current value)
  45 ;; :set - custom-set property
  46 ;; :risky - risky-local-variable property
  47 ;; :safe - safe-local-variable property
  48 ;; :tag - custom-tag property
  49 (let ((all '(;; alloc.c
  50              (gc-cons-threshold alloc integer)
  51              (gc-cons-percentage alloc float)
  52              (garbage-collection-messages alloc boolean)
  53              ;; buffer.c
  54              (cursor-type
  55               display
  56               (choice
  57                (const :tag "Frame default" t)
  58                (const :tag "Filled box" box)
  59                (const :tag "Hollow cursor" hollow)
  60                (const :tag "Vertical bar" bar)
  61                (cons  :tag "Vertical bar with specified width"
  62                       (const bar) integer)
  63                (const :tag "Horizontal bar" hbar)
  64                (cons  :tag "Horizontal bar with specified width"
  65                       (const hbar) integer)
  66                (const :tag "None "nil)))
  67              (mode-line-format mode-line sexp) ;Hard to do right.
  68              (major-mode internal function)
  69              (case-fold-search matching boolean)
  70              (fill-column fill integer)
  71              (left-margin fill integer)
  72              (tab-width editing-basics integer)
  73              (ctl-arrow display boolean)
  74              (truncate-lines display boolean)
  75              (word-wrap display boolean)
  76              (selective-display-ellipses display boolean)
  77              (indicate-empty-lines fringe boolean)
  78              (indicate-buffer-boundaries
  79               fringe
  80               (choice
  81                (const :tag "No indicators" nil)
  82                (const :tag "On left, with arrows" left)
  83                (const :tag "On right, with arrows" right)
  84                (set :tag "Pick your own design"
  85                     :value ((t . nil))
  86                     :format "%{%t%}:\n%v\n%d"
  87                     :doc "You can specify a default and then override it \
  88 for individual indicators.
  89 Leaving \"Default\" unchecked is equivalent with specifying a default of
  90 \"Do not show\"."
  91                     (choice :tag "Default"
  92                             :value (t . nil)
  93                             (const :tag "Do not show" (t . nil))
  94                             (const :tag "On the left" (t . left))
  95                             (const :tag "On the right" (t . right)))
  96                     (choice :tag "Top"
  97                             :value (top . left)
  98                             (const :tag "Do not show" (top . nil))
  99                             (const :tag "On the left" (top . left))
 100                             (const :tag "On the right" (top . right)))
 101                     (choice :tag "Bottom"
 102                             :value (bottom . left)
 103                             (const :tag "Do not show" (bottom . nil))
 104                             (const :tag "On the left" (bottom . left))
 105                             (const :tag "On the right" (bottom . right)))
 106                     (choice :tag "Up arrow"
 107                             :value (up . left)
 108                             (const :tag "Do not show" (up . nil))
 109                             (const :tag "On the left" (up . left))
 110                             (const :tag "On the right" (up . right)))
 111                     (choice :tag "Down arrow"
 112                             :value (down . left)
 113                             (const :tag "Do not show" (down . nil))
 114                             (const :tag "On the left" (down . left))
 115                             (const :tag "On the right" (down . right))))
 116                (other :tag "On left, no arrows" t)))
 117              (scroll-up-aggressively windows
 118                                      (choice (const :tag "off" nil) float)
 119                                      "21.1")
 120              (scroll-down-aggressively windows
 121                                        (choice (const :tag "off" nil) float)
 122                                        "21.1")
 123              (line-spacing display (choice (const :tag "none" nil) number)
 124                            "22.1")
 125              (cursor-in-non-selected-windows
 126               cursor boolean nil
 127               :tag "Cursor In Non-selected Windows"
 128               :set (lambda (symbol value)
 129                      (set-default symbol value)
 130                      (force-mode-line-update t)))
 131              (transient-mark-mode editing-basics boolean nil
 132                                   :standard (not noninteractive)
 133                                   :initialize custom-initialize-delay
 134                                   :set custom-set-minor-mode)
 135              (bidi-paragraph-direction
 136               paragraphs
 137               (choice
 138                (const :tag "Left to Right" left-to-right)
 139                (const :tag "Right to Left" right-to-left)
 140                (const :tag "Dynamic, according to paragraph text" nil))
 141               "24.1")
 142              ;; callint.c
 143              (mark-even-if-inactive editing-basics boolean)
 144              ;; callproc.c
 145              (shell-file-name execute file)
 146              (exec-path execute
 147                         (repeat (choice (const :tag "default directory" nil)
 148                                         (directory :format "%v"))))
 149              (exec-suffixes execute (repeat string))
 150              ;; charset.c
 151              (charset-map-path installation
 152                                (repeat (directory :format "%v")))
 153              ;; coding.c
 154              (inhibit-eol-conversion mule boolean)
 155              (eol-mnemonic-undecided mule string)
 156              ;; startup.el fiddles with the values.  IMO, would be
 157              ;; simpler to just use #ifdefs in coding.c.
 158              (eol-mnemonic-unix mule string nil
 159                                 :standard
 160                                 (if (memq system-type '(ms-dos windows-nt))
 161                                     "(Unix)" ":"))
 162              (eol-mnemonic-dos mule string nil
 163                                :standard
 164                                (if (memq system-type '(ms-dos windows-nt))
 165                                    "\\" "(DOS)"))
 166              (eol-mnemonic-mac mule string nil
 167                                :standard "(Mac)")
 168              (file-coding-system-alist
 169               mule
 170               (alist
 171                :key-type (regexp :tag "File regexp")
 172                :value-type (choice
 173                             :value (undecided . undecided)
 174                             (cons :tag "Encoding/decoding pair"
 175                                   :value (undecided . undecided)
 176                                   (coding-system :tag "Decoding")
 177                                   (coding-system :tag "Encoding"))
 178                             (coding-system
 179                              :tag "Single coding system"
 180                              :value undecided
 181                              :match (lambda (widget value)
 182                                       (and value (not (functionp value)))))
 183                             (function :value ignore))))
 184              ;; dired.c
 185              (completion-ignored-extensions dired
 186                                             (repeat (string :format "%v")))
 187              ;; dispnew.c
 188              (baud-rate display integer)
 189              (inverse-video display boolean)
 190              (visible-bell display boolean)
 191              (no-redraw-on-reenter display boolean)
 192
 193              ;; dosfns.c
 194              (dos-display-scancodes display boolean)
 195              (dos-hyper-key keyboard integer)
 196              (dos-super-key keyboard integer)
 197              (dos-keypad-mode keyboard integer)
 198
 199              ;; editfns.c
 200              (user-full-name mail string)
 201              ;; emacs.c
 202              (report-emacs-bug-address emacsbug string)
 203              ;; eval.c
 204              (max-specpdl-size limits integer)
 205              (max-lisp-eval-depth limits integer)
 206              (max-mini-window-height limits
 207                                      (choice (const :tag "quarter screen" nil)
 208                                              number) "23.1")
 209              (debug-on-error debug
 210                              (choice (const :tag "off")
 211                                      (repeat :menu-tag "When"
 212                                              :value (nil)
 213                                              (symbol :format "%v"))
 214                                      (const :tag "always" t)))
 215              (debug-ignored-errors debug (repeat (choice symbol regexp)))
 216              (debug-on-quit debug boolean)
 217              (debug-on-signal debug boolean)
 218              ;; fileio.c
 219              (delete-by-moving-to-trash auto-save boolean "23.1")
 220              (auto-save-visited-file-name auto-save boolean)
 221              ;; filelock.c
 222              (create-lockfiles files boolean "24.3")
 223              (temporary-file-directory
 224               ;; Darwin section added 24.1, does not seem worth :version bump.
 225               files directory nil
 226               :standard
 227               (file-name-as-directory
 228                ;; FIXME ? Should there be Ftemporary_file_directory to do this
 229                ;; more robustly (cf set_local_socket in emacsclient.c).
 230                ;; It could be used elsewhere, eg Fcall_process_region,
 231                ;; server-socket-dir.  See bug#7135.
 232                (cond ((memq system-type '(ms-dos windows-nt))
 233                       (or (getenv "TEMP") (getenv "TMPDIR") (getenv "TMP")
 234                           "c:/temp"))
 235                      ((eq system-type 'darwin)
 236                       (or (getenv "TMPDIR") (getenv "TMP") (getenv "TEMP")
 237                           ;; See bug#7135.
 238                           (let ((tmp (ignore-errors
 239                                        (shell-command-to-string
 240                                         "getconf DARWIN_USER_TEMP_DIR"))))
 241                             (and (stringp tmp)
 242                                  (setq tmp (replace-regexp-in-string
 243                                             "\n\\'" "" tmp))
 244                                  ;; Handles "getconf: Unrecognized variable..."
 245                                  (file-directory-p tmp)
 246                                  tmp))
 247                           "/tmp"))
 248                      (t
 249                       (or (getenv "TMPDIR") (getenv "TMP") (getenv "TEMP")
 250                           "/tmp"))))
 251               :initialize custom-initialize-delay)
 252              ;; fns.c
 253              (use-dialog-box menu boolean "21.1")
 254              (use-file-dialog menu boolean "22.1")
 255              (focus-follows-mouse frames boolean "20.3")
 256              ;; fontset.c
 257              ;; FIXME nil is the initial value, fontset.el setqs it.
 258              (vertical-centering-font-regexp display
 259                                              (choice (const nil) regexp))
 260              ;; frame.c
 261              (default-frame-alist frames
 262                (repeat (cons :format "%v"
 263                              (symbol :tag "Parameter")
 264                              (sexp :tag "Value"))))
 265              (mouse-highlight mouse (choice (const :tag "disabled" nil)
 266                                             (const :tag "always shown" t)
 267                                             (other :tag "hidden by keypress" 1))
 268                               "22.1")
 269              (make-pointer-invisible mouse boolean "23.2")
 270              (menu-bar-mode frames boolean nil
 271                             ;; FIXME?
 272 ;                           :initialize custom-initialize-default
 273                             :set custom-set-minor-mode)
 274              (tool-bar-mode (frames mouse) boolean nil
 275 ;                           :initialize custom-initialize-default
 276                             :set custom-set-minor-mode)
 277              (frame-resize-pixelwise frames boolean "24.4")
 278              (frame-inhibit-implied-resize frames
 279                                            (choice
 280                                             (const :tag "Never" nil)
 281                                             (const :tag "Always" t)
 282                                             (repeat (symbol :tag "Parameter")))
 283                                            "25.1")
 284              ;; fringe.c
 285              (overflow-newline-into-fringe fringe boolean)
 286              ;; image.c
 287              (imagemagick-render-type image integer "24.1")
 288              ;; indent.c
 289              (indent-tabs-mode indent boolean)
 290              ;; keyboard.c
 291              (meta-prefix-char keyboard character)
 292              (auto-save-interval auto-save integer)
 293              (auto-save-timeout auto-save (choice (const :tag "off" nil)
 294                                                   (integer :format "%v")))
 295              (echo-keystrokes minibuffer number)
 296              (polling-period keyboard integer)
 297              (double-click-time mouse (restricted-sexp
 298                                        :match-alternatives (integerp 'nil 't)))
 299              (double-click-fuzz mouse integer "22.1")
 300              (help-char keyboard character)
 301              (help-event-list keyboard (repeat (sexp :format "%v")))
 302              (menu-prompting menu boolean)
 303              (select-active-regions killing
 304                                     (choice (const :tag "always" t)
 305                                             (const :tag "only shift-selection or mouse-drag" only)
 306                                             (const :tag "off" nil))
 307                                     "24.1")
 308              (debug-on-event debug
 309                              (choice (const :tag "None" nil)
 310                                      (const :tag "When sent SIGUSR1" sigusr1)
 311                                      (const :tag "When sent SIGUSR2" sigusr2))
 312                              "24.1")
 313
 314              ;; This is not good news because it will use the wrong
 315              ;; version-specific directories when you upgrade.  We need
 316              ;; customization of the front of the list, maintaining the
 317              ;; standard value intact at the back.
 318              ;;(load-path environment
 319              ;;         (repeat (choice :tag "[Current dir?]"
 320              ;;                         :format "%[Current dir?%] %v"
 321              ;;                         (const :tag " current dir" nil)
 322              ;;                         (directory :format "%v"))))
 323              (load-prefer-newer lisp boolean "24.4")
 324              ;; minibuf.c
 325              (enable-recursive-minibuffers minibuffer boolean)
 326              (history-length minibuffer
 327                              (choice (const :tag "Infinite" t) integer)
 328                              "24.5")    ; 30 -> 100
 329              (history-delete-duplicates minibuffer boolean "22.1")
 330              (read-buffer-completion-ignore-case minibuffer boolean "23.1")
 331
 332              (minibuffer-prompt-properties
 333               minibuffer
 334               (list
 335                (checklist :inline t
 336                           (const :tag "Read-Only"
 337                                  :doc "Prevent prompt from being modified"
 338                                  :format "%t%n%h"
 339                                  :inline t
 340                                  (read-only t))
 341                           (const :tag "Don't Enter"
 342                                  :doc "Prevent point from ever entering prompt"
 343                                  :format "%t%n%h"
 344                                  :inline t
 345                                  (point-entered minibuffer-avoid-prompt)))
 346                (repeat :inline t
 347                        :tag "Other Properties"
 348                        (list :inline t
 349                              :format "%v"
 350                              (symbol :tag "Property")
 351                              (sexp :tag "Value"))))
 352               "21.1")
 353              (minibuffer-auto-raise minibuffer boolean)
 354              ;; options property set at end
 355              (read-buffer-function minibuffer
 356                                    (choice (const nil)
 357                                            (function-item iswitchb-read-buffer)
 358                                            function))
 359              ;; msdos.c
 360              (dos-unsupported-char-glyph display integer)
 361              ;; nsterm.m
 362              (ns-control-modifier
 363               ns
 364               (choice (const :tag "No modifier" nil)
 365                       (const control) (const meta)
 366                       (const alt) (const hyper)
 367                       (const super)) "23.1")
 368              (ns-right-control-modifier
 369               ns
 370               (choice (const :tag "No modifier (work as control)" none)
 371                       (const :tag "Use the value of ns-control-modifier"
 372                              left)
 373                       (const control) (const meta)
 374                       (const alt) (const hyper)
 375                       (const super)) "24.1")
 376              (ns-command-modifier
 377               ns
 378               (choice (const :tag "No modifier" nil)
 379                       (const control) (const meta)
 380                       (const alt) (const hyper)
 381                       (const super)) "23.1")
 382              (ns-right-command-modifier
 383               ns
 384               (choice (const :tag "No modifier (work as command)" none)
 385                       (const :tag "Use the value of ns-command-modifier"
 386                              left)
 387                       (const control) (const meta)
 388                       (const alt) (const hyper)
 389                       (const super)) "24.1")
 390              (ns-alternate-modifier
 391               ns
 392               (choice (const :tag "No modifier (work as alternate/option)" none)
 393                       (const control) (const meta)
 394                       (const alt) (const hyper)
 395                       (const super)) "23.1")
 396              (ns-right-alternate-modifier
 397               ns
 398               (choice (const :tag "No modifier (work as alternate/option)" none)
 399                       (const :tag "Use the value of ns-alternate-modifier"
 400                              left)
 401                       (const control) (const meta)
 402                       (const alt) (const hyper)
 403                       (const super)) "23.3")
 404              (ns-function-modifier
 405               ns
 406               (choice (const :tag "No modifier (work as function)" none)
 407                       (const control) (const meta)
 408                       (const alt) (const hyper)
 409                       (const super)) "23.1")
 410              (ns-antialias-text ns boolean "23.1")
 411              (ns-auto-hide-menu-bar ns boolean "24.1")
 412              (ns-use-native-fullscreen ns boolean "24.4")
 413              (ns-use-fullscreen-animation ns boolean "25.1")
 414              (ns-use-srgb-colorspace ns boolean "24.4")
 415              ;; process.c
 416              (delete-exited-processes processes-basics boolean)
 417              ;; syntax.c
 418              (parse-sexp-ignore-comments editing-basics boolean)
 419              (words-include-escapes editing-basics boolean)
 420              (open-paren-in-column-0-is-defun-start editing-basics boolean
 421                                                     "21.1")
 422              ;; term.c
 423              (visible-cursor cursor boolean "22.1")
 424              ;; terminal.c
 425              (ring-bell-function display
 426               (choice
 427                (const :tag "Default" nil)
 428                (const :tag "Silent" ignore)
 429                function))
 430              ;; undo.c
 431              (undo-limit undo integer)
 432              (undo-strong-limit undo integer)
 433              (undo-outer-limit undo
 434                                (choice integer
 435                                        (const :tag "No limit"
 436                                               :format "%t\n%d"
 437                                               :doc
 438                                               "With this choice, \
 439 the undo info for the current command never gets discarded.
 440 This should only be chosen under exceptional circumstances,
 441 since it could result in memory overflow and make Emacs crash."
 442                                               nil))
 443                                "22.1")
 444              ;; window.c
 445              (temp-buffer-show-function windows (choice (const nil) function))
 446              (next-screen-context-lines windows integer)
 447              (scroll-preserve-screen-position
 448               windows (choice
 449                        (const :tag "Off (nil)" :value nil)
 450                        (const :tag "Full screen (t)" :value t)
 451                        (other :tag "Always" 1)) "22.1")
 452              (recenter-redisplay
 453               windows (choice
 454                        (const :tag "Never (nil)" :value nil)
 455                        (const :tag "Only on ttys" :value tty)
 456                        (other :tag "Always" t)) "23.1")
 457              (window-combination-resize windows boolean "24.1")
 458              (window-combination-limit
 459               windows (choice
 460                        (const :tag "Never (nil)" :value nil)
 461                        (const :tag "For Temp Buffer Resize mode (temp-buffer-resize)"
 462                               :value temp-buffer-resize)
 463                        (const :tag "For temporary buffers (temp-buffer)"
 464                               :value temp-buffer)
 465                        (const :tag "For buffer display (display-buffer)"
 466                               :value display-buffer)
 467                        (other :tag "Always (t)" :value t))
 468               "24.3")
 469              (fast-but-imprecise-scrolling scrolling boolean "25.1")
 470              (window-resize-pixelwise windows boolean "24.4")
 471              ;; xdisp.c
 472              ;; The whitespace group is for whitespace.el.
 473              (show-trailing-whitespace editing-basics boolean nil
 474                                        :safe booleanp)
 475              (scroll-step windows integer)
 476              (scroll-conservatively windows integer)
 477              (scroll-margin windows integer)
 478              (hscroll-margin windows integer "22.1")
 479              (hscroll-step windows number "22.1")
 480              (truncate-partial-width-windows
 481               display
 482               (choice (integer :tag "Truncate if narrower than")
 483                       (const :tag "Respect `truncate-lines'" nil)
 484                       (other :tag "Truncate if not full-width" t))
 485               "23.1")
 486              (make-cursor-line-fully-visible windows boolean)
 487              (mode-line-in-non-selected-windows mode-line boolean "22.1")
 488              (line-number-display-limit display
 489                                         (choice integer
 490                                                 (const :tag "No limit" nil)))
 491              (line-number-display-limit-width display integer "22.1")
 492              (highlight-nonselected-windows display boolean)
 493              (message-log-max debug (choice (const :tag "Disable" nil)
 494                                             (integer :menu-tag "lines"
 495                                                      :format "%v")
 496                                             (other :tag "Unlimited" t))
 497                               "24.3")
 498              (unibyte-display-via-language-environment mule boolean)
 499              (blink-cursor-alist cursor alist "22.1")
 500              (overline-margin display integer "22.1")
 501              (underline-minimum-offset display integer "23.1")
 502              (mouse-autoselect-window
 503               display (choice
 504                        (const :tag "Off (nil)" :value nil)
 505                        (const :tag "Immediate" :value t)
 506                        (number :tag "Delay by secs" :value 0.5)) "22.1")
 507              (tool-bar-style
 508               frames (choice
 509                       (const :tag "Images" :value image)
 510                       (const :tag "Text" :value text)
 511                       (const :tag "Both" :value both)
 512                       (const :tag "Both-horiz" :value both-horiz)
 513                       (const :tag "Text-image-horiz" :value text-image-horiz)
 514                       (const :tag "System default" :value nil)) "24.1")
 515              (tool-bar-max-label-size frames integer "24.1")
 516              (auto-hscroll-mode scrolling boolean "21.1")
 517              (void-text-area-pointer cursor
 518                                      (choice
 519                                       (const :tag "Standard (text pointer)" :value nil)
 520                                       (const :tag "Arrow" :value arrow)
 521                                       (const :tag "Text pointer" :value text)
 522                                       (const :tag "Hand" :value hand)
 523                                       (const :tag "Vertical dragger" :value vdrag)
 524                                       (const :tag "Horizontal dragger" :value hdrag)
 525                                       (const :tag "Same as mode line" :value modeline)
 526                                       (const :tag "Hourglass" :value hourglass)))
 527              (display-hourglass cursor boolean)
 528              (hourglass-delay cursor number)
 529              (resize-mini-windows
 530               windows (choice
 531                        (const :tag "Off (nil)" :value nil)
 532                        (const :tag "Fit (t)" :value t)
 533                        (const :tag "Grow only" :value grow-only))
 534               "25.1")
 535              ;; xfaces.c
 536              (scalable-fonts-allowed display boolean "22.1")
 537              ;; xfns.c
 538              (x-bitmap-file-path installation
 539                                  (repeat (directory :format "%v")))
 540              (x-gtk-use-old-file-dialog menu boolean "22.1")
 541              (x-gtk-show-hidden-files menu boolean "22.1")
 542              (x-gtk-file-dialog-help-text menu boolean "22.1")
 543              (x-gtk-use-system-tooltips tooltip boolean "23.3")
 544              ;; xterm.c
 545              (x-use-underline-position-properties display boolean "22.1")
 546              (x-underline-at-descent-line display boolean "22.1")
 547              (x-stretch-cursor display boolean "21.1")
 548              (scroll-bar-adjust-thumb-portion windows boolean "24.4")
 549              ;; xselect.c
 550              (x-select-enable-clipboard-manager killing boolean "24.1")
 551              ;; xsettings.c
 552              (font-use-system-font font-selection boolean "23.2")))
 553       this symbol group type standard version native-p rest prop propval
 554       ;; This function turns a value
 555       ;; into an expression which produces that value.
 556       (quoter (lambda (sexp)
 557                 (if (or (memq sexp '(t nil))
 558                         (keywordp sexp)
 559                         (and (listp sexp)
 560                              (memq (car sexp) '(lambda)))
 561                         (stringp sexp)
 562                         (numberp sexp))
 563                     sexp
 564                   (list 'quote sexp)))))
 565   (while all
 566     (setq this (car all)
 567           all (cdr all)
 568           symbol (nth 0 this)
 569           group (nth 1 this)
 570           type (nth 2 this)
 571           version (nth 3 this)
 572           rest (nthcdr 4 this)
 573           ;; If we did not specify any standard value expression above,
 574           ;; use the current value as the standard value.
 575           standard (if (setq prop (memq :standard rest))
 576                        (cadr prop)
 577                      (if (default-boundp symbol)
 578                          (funcall quoter (default-value symbol))))
 579           ;; Don't complain about missing variables which are
 580           ;; irrelevant to this platform.
 581           native-p (save-match-data
 582                      (cond
 583                       ((string-match "\\`dos-" (symbol-name symbol))
 584                        (eq system-type 'ms-dos))
 585                       ((string-match "\\`w32-" (symbol-name symbol))
 586                        (eq system-type 'windows-nt))
 587                       ((string-match "\\`ns-" (symbol-name symbol))
 588                        (featurep 'ns))
 589                       ((string-match "\\`x-.*gtk" (symbol-name symbol))
 590                        (featurep 'gtk))
 591                       ((string-match "clipboard-manager" (symbol-name symbol))
 592                        (boundp 'x-select-enable-clipboard-manager))
 593                       ((string-match "\\`x-" (symbol-name symbol))
 594                        (fboundp 'x-create-frame))
 595                       ((string-match "selection" (symbol-name symbol))
 596                        (fboundp 'x-selection-exists-p))
 597                       ((string-match "fringe" (symbol-name symbol))
 598                        (fboundp 'define-fringe-bitmap))
 599                       ((string-match "\\`imagemagick" (symbol-name symbol))
 600                        (fboundp 'imagemagick-types))
 601                       ((equal "font-use-system-font" (symbol-name symbol))
 602                        (featurep 'system-font-setting))
 603                       ;; Conditioned on x-create-frame, because that's
 604                       ;; the condition for loadup.el to preload tool-bar.el.
 605                       ((string-match "tool-bar-" (symbol-name symbol))
 606                        (fboundp 'x-create-frame))
 607                       ((equal "vertical-centering-font-regexp"
 608                               (symbol-name symbol))
 609                        ;; Any function from fontset.c will do.
 610                        (fboundp 'new-fontset))
 611                       ((equal "scroll-bar-adjust-thumb-portion"
 612                               (symbol-name symbol))
 613                        (featurep 'x))
 614                       (t t))))
 615     (if (not (boundp symbol))
 616         ;; If variables are removed from C code, give an error here!
 617         (and native-p
 618              (message "Note, built-in variable `%S' not bound" symbol))
 619       ;; Save the standard value, unless we already did.
 620       (or (get symbol 'standard-value)
 621           (put symbol 'standard-value (list standard)))
 622       ;; We need these properties independent of whether cus-start is loaded.
 623       (if (setq prop (memq :safe rest))
 624           (put symbol 'safe-local-variable (cadr prop)))
 625       (if (setq prop (memq :risky rest))
 626           (put symbol 'risky-local-variable (cadr prop)))
 627       (if (setq prop (memq :set rest))
 628           (put symbol 'custom-set (cadr prop)))
 629       ;; Note this is the _only_ initialize property we handle.
 630       (if (eq (cadr (memq :initialize rest)) 'custom-initialize-delay)
 631           (push symbol custom-delayed-init-variables))
 632       ;; If this is NOT while dumping Emacs, set up the rest of the
 633       ;; customization info.  This is the stuff that is not needed
 634       ;; until someone does M-x customize etc.
 635       (unless purify-flag
 636         ;; Add it to the right group(s).
 637         (if (listp group)
 638             (dolist (g group)
 639               (custom-add-to-group g symbol 'custom-variable))
 640           (custom-add-to-group group symbol 'custom-variable))
 641         ;; Set the type.
 642         (put symbol 'custom-type type)
 643         (if version (put symbol 'custom-version version))
 644         (while rest
 645           (setq prop (car rest)
 646                 propval (cadr rest)
 647                 rest (nthcdr 2 rest))
 648           (cond ((memq prop '(:standard :risky :safe :set))) ; handled above
 649                 ((eq prop :tag)
 650                  (put symbol 'custom-tag propval))))))))
 651
 652 (custom-add-to-group 'iswitchb 'read-buffer-function 'custom-variable)
 653 (custom-add-to-group 'font-lock 'open-paren-in-column-0-is-defun-start
 654                      'custom-variable)
 655
 656 ;; Record cus-start as loaded if we have set up all the info that we can.
 657 ;; Don't record it as loaded if we have only set up the standard values
 658 ;; and safe/risky properties.
 659 (unless purify-flag
 660   (provide 'cus-start))
 661
 662 ;;; cus-start.el ends here