lisp/cus-start.el

   1 ;;; cus-start.el --- define customization properties of builtins  -*- lexical-binding:t -*-
   2
   3 ;; Copyright (C) 1997, 1999-2017 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 <https://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 (defun minibuffer-prompt-properties--setter (symbol value)
  37   (set-default symbol value)
  38   (if (memq 'cursor-intangible value)
  39       (add-hook 'minibuffer-setup-hook 'cursor-intangible-mode)
  40     ;; Removing it is a bit trickier since it could have been added by someone
  41     ;; else as well, so let's just not bother.
  42     ))
  43
  44 ;; Elements of this list have the form:
  45 ;; SYMBOL GROUP TYPE VERSION REST...
  46 ;; SYMBOL is the name of the variable.
  47 ;; GROUP is the custom group to which it belongs (may also be a list
  48 ;; of groups)
  49 ;; TYPE is the defcustom :type.
  50 ;; VERSION is the defcustom :version (or nil).
  51 ;; REST is a set of :KEYWORD VALUE pairs.  Accepted :KEYWORDs are:
  52 ;; :standard - standard value for SYMBOL (else use current value)
  53 ;; :set - custom-set property
  54 ;; :risky - risky-local-variable property
  55 ;; :safe - safe-local-variable property
  56 ;; :tag - custom-tag property
  57 (let (standard
  58       native-p prop propval
  59       ;; This function turns a value
  60       ;; into an expression which produces that value.
  61       (quoter (lambda (sexp)
  62                 ;; FIXME: We'd like to use macroexp-quote here, but cus-start
  63                 ;; is loaded too early in loadup.el for that.
  64                 (if (or (memq sexp '(t nil))
  65                         (keywordp sexp)
  66                         (and (listp sexp)
  67                              (memq (car sexp) '(lambda)))
  68                         (stringp sexp)
  69                         (numberp sexp))
  70                     sexp
  71                   (list 'quote sexp))))
  72       (cursor-type-types
  73        '(choice
  74          (const :tag "Frame default" t)
  75          (const :tag "Filled box" box)
  76          (const :tag "Hollow cursor" hollow)
  77          (const :tag "Vertical bar" bar)
  78          (cons  :tag "Vertical bar with specified width"
  79                 (const bar) integer)
  80          (const :tag "Horizontal bar" hbar)
  81          (cons  :tag "Horizontal bar with specified width"
  82                 (const hbar) integer)
  83          (const :tag "None "nil))))
  84   (pcase-dolist
  85       (`(,symbol ,group ,type ,version . ,rest)
  86            `(;; alloc.c
  87              (gc-cons-threshold alloc integer)
  88              (gc-cons-percentage alloc float)
  89              (garbage-collection-messages alloc boolean)
  90              ;; buffer.c
  91              (cursor-type display ,cursor-type-types)
  92              (mode-line-format mode-line sexp) ;Hard to do right.
  93              (major-mode internal function)
  94              (case-fold-search matching boolean)
  95              (fill-column fill integer)
  96              (left-margin fill integer)
  97              (tab-width editing-basics integer)
  98              (ctl-arrow display boolean)
  99              (truncate-lines display boolean)
 100              (word-wrap display boolean)
 101              (selective-display-ellipses display boolean)
 102              (indicate-empty-lines fringe boolean)
 103              (indicate-buffer-boundaries
 104               fringe
 105               (choice
 106                (const :tag "No indicators" nil)
 107                (const :tag "On left, with arrows" left)
 108                (const :tag "On right, with arrows" right)
 109                (set :tag "Pick your own design"
 110                     :value ((t . nil))
 111                     :format "%{%t%}:\n%v\n%d"
 112                     :doc "You can specify a default and then override it \
 113 for individual indicators.
 114 Leaving \"Default\" unchecked is equivalent with specifying a default of
 115 \"Do not show\"."
 116                     (choice :tag "Default"
 117                             :value (t . nil)
 118                             (const :tag "Do not show" (t . nil))
 119                             (const :tag "On the left" (t . left))
 120                             (const :tag "On the right" (t . right)))
 121                     (choice :tag "Top"
 122                             :value (top . left)
 123                             (const :tag "Do not show" (top . nil))
 124                             (const :tag "On the left" (top . left))
 125                             (const :tag "On the right" (top . right)))
 126                     (choice :tag "Bottom"
 127                             :value (bottom . left)
 128                             (const :tag "Do not show" (bottom . nil))
 129                             (const :tag "On the left" (bottom . left))
 130                             (const :tag "On the right" (bottom . right)))
 131                     (choice :tag "Up arrow"
 132                             :value (up . left)
 133                             (const :tag "Do not show" (up . nil))
 134                             (const :tag "On the left" (up . left))
 135                             (const :tag "On the right" (up . right)))
 136                     (choice :tag "Down arrow"
 137                             :value (down . left)
 138                             (const :tag "Do not show" (down . nil))
 139                             (const :tag "On the left" (down . left))
 140                             (const :tag "On the right" (down . right))))
 141                (other :tag "On left, no arrows" t)))
 142              (scroll-up-aggressively windows
 143                                      (choice (const :tag "off" nil) float)
 144                                      "21.1")
 145              (scroll-down-aggressively windows
 146                                        (choice (const :tag "off" nil) float)
 147                                        "21.1")
 148              (line-spacing display (choice (const :tag "none" nil) number)
 149                            "22.1")
 150              (cursor-in-non-selected-windows
 151               cursor ,cursor-type-types nil
 152               :tag "Cursor In Non-selected Windows"
 153               :set (lambda (symbol value)
 154                      (set-default symbol value)
 155                      (force-mode-line-update t)))
 156              (transient-mark-mode editing-basics boolean nil
 157                                   :standard (not noninteractive)
 158                                   :initialize custom-initialize-delay
 159                                   :set custom-set-minor-mode)
 160              (bidi-paragraph-direction
 161               paragraphs
 162               (choice
 163                (const :tag "Left to Right" left-to-right)
 164                (const :tag "Right to Left" right-to-left)
 165                (const :tag "Dynamic, according to paragraph text" nil))
 166               "24.1")
 167              ;; callint.c
 168              (mark-even-if-inactive editing-basics boolean)
 169              ;; callproc.c
 170              (shell-file-name execute file)
 171              (exec-path execute
 172                         (repeat (choice (const :tag "default directory" nil)
 173                                         (directory :format "%v")))
 174                         nil
 175                         :standard
 176                         (mapcar (lambda (f)
 177                                   (if f (directory-file-name f)
 178                                     "."))
 179                                 (append (parse-colon-path (getenv "PATH"))
 180                                         (list exec-directory))))
 181              (exec-suffixes execute (repeat string))
 182              ;; charset.c
 183              (charset-map-path installation
 184                                (repeat (directory :format "%v")))
 185              ;; coding.c
 186              (inhibit-eol-conversion mule boolean)
 187              (enable-character-translation mule boolean)
 188              (eol-mnemonic-undecided mule string)
 189              ;; startup.el fiddles with the values.  IMO, would be
 190              ;; simpler to just use #ifdefs in coding.c.
 191              (eol-mnemonic-unix mule string nil
 192                                 :standard
 193                                 (if (memq system-type '(ms-dos windows-nt))
 194                                     "(Unix)" ":"))
 195              (eol-mnemonic-dos mule string nil
 196                                :standard
 197                                (if (memq system-type '(ms-dos windows-nt))
 198                                    "\\" "(DOS)"))
 199              (eol-mnemonic-mac mule string nil
 200                                :standard "(Mac)")
 201              (file-coding-system-alist
 202               mule
 203               (alist
 204                :key-type (regexp :tag "File regexp")
 205                :value-type (choice
 206                             :value (undecided . undecided)
 207                             (cons :tag "Encoding/decoding pair"
 208                                   :value (undecided . undecided)
 209                                   (coding-system :tag "Decoding")
 210                                   (coding-system :tag "Encoding"))
 211                             (coding-system
 212                              :tag "Single coding system"
 213                              :value undecided
 214                              :match (lambda (widget value)
 215                                       (and value (not (functionp value)))))
 216                             (function :value ignore))))
 217              ;; dired.c
 218              (completion-ignored-extensions dired
 219                                             (repeat (string :format "%v")))
 220              ;; dispnew.c
 221              (baud-rate display integer)
 222              (inverse-video display boolean)
 223              (visible-bell display boolean)
 224              (no-redraw-on-reenter display boolean)
 225
 226              ;; dosfns.c
 227              (dos-display-scancodes display boolean)
 228              (dos-hyper-key keyboard integer)
 229              (dos-super-key keyboard integer)
 230              (dos-keypad-mode keyboard integer)
 231
 232              ;; editfns.c
 233              (user-full-name mail string)
 234              ;; emacs.c
 235              (report-emacs-bug-address emacsbug string)
 236              ;; eval.c
 237              (max-specpdl-size limits integer)
 238              (max-lisp-eval-depth limits integer)
 239              (max-mini-window-height limits
 240                                      (choice (const :tag "quarter screen" nil)
 241                                              number) "23.1")
 242              (debug-on-error debug
 243                              (choice (const :tag "off")
 244                                      (repeat :menu-tag "When"
 245                                              :value (nil)
 246                                              (symbol :format "%v"))
 247                                      (const :tag "always" t)))
 248              (debug-ignored-errors debug (repeat (choice symbol regexp)))
 249              (debug-on-quit debug boolean)
 250              (debug-on-signal debug boolean)
 251              (debugger-stack-frame-as-list debugger boolean "26.1")
 252              ;; fileio.c
 253              (delete-by-moving-to-trash auto-save boolean "23.1")
 254              (auto-save-visited-file-name auto-save boolean)
 255              ;; filelock.c
 256              (create-lockfiles files boolean "24.3")
 257              (temporary-file-directory
 258               ;; Darwin section added 24.1, does not seem worth :version bump.
 259               files directory nil
 260               :standard
 261               (file-name-as-directory
 262                ;; FIXME ? Should there be Ftemporary_file_directory to do this
 263                ;; more robustly (cf set_local_socket in emacsclient.c).
 264                ;; It could be used elsewhere, eg Fcall_process_region,
 265                ;; server-socket-dir.  See bug#7135.
 266                (cond ((memq system-type '(ms-dos windows-nt))
 267                       (or (getenv "TEMP") (getenv "TMPDIR") (getenv "TMP")
 268                           "c:/temp"))
 269                      ((eq system-type 'darwin)
 270                       (or (getenv "TMPDIR") (getenv "TMP") (getenv "TEMP")
 271                           ;; See bug#7135.
 272                           (let ((tmp (ignore-errors
 273                                        (shell-command-to-string
 274                                         "getconf DARWIN_USER_TEMP_DIR"))))
 275                             (and (stringp tmp)
 276                                  (setq tmp (replace-regexp-in-string
 277                                             "\n\\'" "" tmp))
 278                                  ;; Handles "getconf: Unrecognized variable..."
 279                                  (file-directory-p tmp)
 280                                  tmp))
 281                           "/tmp"))
 282                      (t
 283                       (or (getenv "TMPDIR") (getenv "TMP") (getenv "TEMP")
 284                           "/tmp"))))
 285               :initialize custom-initialize-delay)
 286              ;; fns.c
 287              (use-dialog-box menu boolean "21.1")
 288              (use-file-dialog menu boolean "22.1")
 289              (focus-follows-mouse
 290               frames (choice
 291                       (const :tag "Off (nil)" :value nil)
 292                       (const :tag "On (t)" :value t)
 293                       (const :tag "Auto-raise" :value auto-raise)) "26.1")
 294              ;; fontset.c
 295              ;; FIXME nil is the initial value, fontset.el setqs it.
 296              (vertical-centering-font-regexp display
 297                                              (choice (const nil) regexp))
 298              ;; frame.c
 299              (default-frame-alist frames
 300                (repeat (cons :format "%v"
 301                              (symbol :tag "Parameter")
 302                              (sexp :tag "Value"))))
 303              (mouse-highlight mouse (choice (const :tag "disabled" nil)
 304                                             (const :tag "always shown" t)
 305                                             (other :tag "hidden by keypress" 1))
 306                               "22.1")
 307              (make-pointer-invisible mouse boolean "23.2")
 308              (menu-bar-mode frames boolean nil
 309                             ;; FIXME?
 310                             ;; :initialize custom-initialize-default
 311                             :set custom-set-minor-mode)
 312              (tool-bar-mode (frames mouse) boolean nil
 313                             ;; :initialize custom-initialize-default
 314                             :set custom-set-minor-mode)
 315              (frame-resize-pixelwise frames boolean "24.4")
 316              (frame-inhibit-implied-resize frames
 317                                            (choice
 318                                             (const :tag "Never" nil)
 319                                             (const :tag "Always" t)
 320                                             (repeat (symbol :tag "Parameter")))
 321                                            "25.1")
 322              (tooltip-reuse-hidden-frame tooltip boolean "26.1")
 323              ;; fringe.c
 324              (overflow-newline-into-fringe fringe boolean)
 325              ;; image.c
 326              (imagemagick-render-type image integer "24.1")
 327              ;; indent.c
 328              (indent-tabs-mode indent boolean)
 329              ;; keyboard.c
 330              (meta-prefix-char keyboard character)
 331              (auto-save-interval auto-save integer)
 332              (auto-save-timeout auto-save (choice (const :tag "off" nil)
 333                                                   (integer :format "%v")))
 334              (echo-keystrokes minibuffer number)
 335              (polling-period keyboard integer)
 336              (double-click-time mouse (restricted-sexp
 337                                        :match-alternatives (integerp 'nil 't)))
 338              (double-click-fuzz mouse integer "22.1")
 339              (help-char keyboard character)
 340              (help-event-list keyboard (repeat (sexp :format "%v")))
 341              (menu-prompting menu boolean)
 342              (select-active-regions killing
 343                                     (choice (const :tag "always" t)
 344                                             (const :tag "only shift-selection or mouse-drag" only)
 345                                             (const :tag "off" nil))
 346                                     "24.1")
 347              (debug-on-event debug
 348                              (choice (const :tag "None" nil)
 349                                      (const :tag "When sent SIGUSR1" sigusr1)
 350                                      (const :tag "When sent SIGUSR2" sigusr2))
 351                              "24.1")
 352
 353              ;; This is not good news because it will use the wrong
 354              ;; version-specific directories when you upgrade.  We need
 355              ;; customization of the front of the list, maintaining the
 356              ;; standard value intact at the back.
 357              ;;(load-path environment
 358              ;;         (repeat (choice :tag "[Current dir?]"
 359              ;;                         :format "%[Current dir?%] %v"
 360              ;;                         (const :tag " current dir" nil)
 361              ;;                         (directory :format "%v"))))
 362              (load-prefer-newer lisp boolean "24.4")
 363              ;; minibuf.c
 364              (enable-recursive-minibuffers minibuffer boolean)
 365              (history-length minibuffer
 366                              (choice (const :tag "Infinite" t) integer)
 367                              "24.5")    ; 30 -> 100
 368              (history-delete-duplicates minibuffer boolean "22.1")
 369              (read-buffer-completion-ignore-case minibuffer boolean "23.1")
 370
 371              (minibuffer-prompt-properties
 372               minibuffer
 373               (list
 374                (checklist :inline t
 375                           (const :tag "Read-Only"
 376                                  :doc "Prevent prompt from being modified"
 377                                  :format "%t%n%h"
 378                                  :inline t
 379                                  (read-only t))
 380                           (const :tag "Don't Enter"
 381                                  :doc "Prevent point from ever entering prompt"
 382                                  :format "%t%n%h"
 383                                  :inline t
 384                                  (cursor-intangible t)))
 385                (repeat :inline t
 386                        :tag "Other Properties"
 387                        (list :inline t
 388                              :format "%v"
 389                              (symbol :tag "Property")
 390                              (sexp :tag "Value"))))
 391               "21.1"
 392               :set minibuffer-prompt-properties--setter)
 393              (minibuffer-auto-raise minibuffer boolean)
 394              ;; options property set at end
 395              (read-buffer-function minibuffer
 396                                    (choice (const nil)
 397                                            function))
 398              ;; msdos.c
 399              (dos-unsupported-char-glyph display integer)
 400              ;; nsterm.m
 401              (ns-control-modifier
 402               ns
 403               (choice (const :tag "No modifier" nil)
 404                       (const control) (const meta)
 405                       (const alt) (const hyper)
 406                       (const super)) "23.1")
 407              (ns-right-control-modifier
 408               ns
 409               (choice (const :tag "No modifier (work as control)" none)
 410                       (const :tag "Use the value of ns-control-modifier"
 411                              left)
 412                       (const control) (const meta)
 413                       (const alt) (const hyper)
 414                       (const super)) "24.1")
 415              (ns-command-modifier
 416               ns
 417               (choice (const :tag "No modifier" nil)
 418                       (const control) (const meta)
 419                       (const alt) (const hyper)
 420                       (const super)) "23.1")
 421              (ns-right-command-modifier
 422               ns
 423               (choice (const :tag "No modifier (work as command)" none)
 424                       (const :tag "Use the value of ns-command-modifier"
 425                              left)
 426                       (const control) (const meta)
 427                       (const alt) (const hyper)
 428                       (const super)) "24.1")
 429              (ns-alternate-modifier
 430               ns
 431               (choice (const :tag "No modifier (work as alternate/option)" none)
 432                       (const control) (const meta)
 433                       (const alt) (const hyper)
 434                       (const super)) "23.1")
 435              (ns-right-alternate-modifier
 436               ns
 437               (choice (const :tag "No modifier (work as alternate/option)" none)
 438                       (const :tag "Use the value of ns-alternate-modifier"
 439                              left)
 440                       (const control) (const meta)
 441                       (const alt) (const hyper)
 442                       (const super)) "23.3")
 443              (ns-function-modifier
 444               ns
 445               (choice (const :tag "No modifier (work as function)" none)
 446                       (const control) (const meta)
 447                       (const alt) (const hyper)
 448                       (const super)) "23.1")
 449              (ns-antialias-text ns boolean "23.1")
 450              (ns-auto-hide-menu-bar ns boolean "24.1")
 451              (ns-confirm-quit ns boolean "25.1")
 452              (ns-use-native-fullscreen ns boolean "24.4")
 453              (ns-use-fullscreen-animation ns boolean "25.1")
 454              (ns-use-srgb-colorspace ns boolean "24.4")
 455              ;; process.c
 456              (delete-exited-processes processes-basics boolean)
 457              ;; syntax.c
 458              (parse-sexp-ignore-comments editing-basics boolean)
 459              (words-include-escapes editing-basics boolean)
 460              (open-paren-in-column-0-is-defun-start editing-basics boolean
 461                                                     "21.1")
 462              ;; term.c
 463              (visible-cursor cursor boolean "22.1")
 464              ;; terminal.c
 465              (ring-bell-function display
 466               (choice
 467                (const :tag "Default" nil)
 468                (const :tag "Silent" ignore)
 469                function))
 470              ;; undo.c
 471              (undo-limit undo integer)
 472              (undo-strong-limit undo integer)
 473              (undo-outer-limit undo
 474                                (choice integer
 475                                        (const :tag "No limit"
 476                                               :format "%t\n%d"
 477                                               :doc
 478                                               "With this choice, \
 479 the undo info for the current command never gets discarded.
 480 This should only be chosen under exceptional circumstances,
 481 since it could result in memory overflow and make Emacs crash."
 482                                               nil))
 483                                "22.1")
 484              ;; window.c
 485              (temp-buffer-show-function windows (choice (const nil) function))
 486              (next-screen-context-lines windows integer)
 487              (scroll-preserve-screen-position
 488               windows (choice
 489                        (const :tag "Off (nil)" :value nil)
 490                        (const :tag "Full screen (t)" :value t)
 491                        (other :tag "Always" 1)) "22.1")
 492              (recenter-redisplay
 493               windows (choice
 494                        (const :tag "Never (nil)" :value nil)
 495                        (const :tag "Only on ttys" :value tty)
 496                        (other :tag "Always" t)) "23.1")
 497              (window-combination-resize windows boolean "24.1")
 498              (window-combination-limit
 499               windows (choice
 500                        (const :tag "Never (nil)" :value nil)
 501                        (const :tag "If requested via buffer display alist (window-size)"
 502                               :value window-size)
 503                        (const :tag "With Temp Buffer Resize mode (temp-buffer-resize)"
 504                               :value temp-buffer-resize)
 505                        (const :tag "For temporary buffers (temp-buffer)"
 506                               :value temp-buffer)
 507                        (const :tag "For buffer display (display-buffer)"
 508                               :value display-buffer)
 509                        (other :tag "Always (t)" :value t))
 510               "26.1")
 511              (fast-but-imprecise-scrolling scrolling boolean "25.1")
 512              (window-resize-pixelwise windows boolean "24.4")
 513              ;; xdisp.c
 514              ;; The whitespace group is for whitespace.el.
 515              (show-trailing-whitespace editing-basics boolean nil
 516                                        :safe booleanp)
 517              (scroll-step windows integer)
 518              (scroll-conservatively windows integer)
 519              (scroll-margin windows integer)
 520              (maximum-scroll-margin windows float "26.1")
 521              (hscroll-margin windows integer "22.1")
 522              (hscroll-step windows number "22.1")
 523              (truncate-partial-width-windows
 524               display
 525               (choice (integer :tag "Truncate if narrower than")
 526                       (const :tag "Respect `truncate-lines'" nil)
 527                       (other :tag "Truncate if not full-width" t))
 528               "23.1")
 529              (make-cursor-line-fully-visible windows boolean)
 530              (mode-line-in-non-selected-windows mode-line boolean "22.1")
 531              (line-number-display-limit display
 532                                         (choice integer
 533                                                 (const :tag "No limit" nil)))
 534              (line-number-display-limit-width display integer "22.1")
 535              (highlight-nonselected-windows display boolean)
 536              (message-log-max debug (choice (const :tag "Disable" nil)
 537                                             (integer :menu-tag "lines"
 538                                                      :format "%v")
 539                                             (other :tag "Unlimited" t))
 540                               "24.3")
 541              (unibyte-display-via-language-environment mule boolean)
 542              (blink-cursor-alist cursor alist "22.1")
 543              (overline-margin display integer "22.1")
 544              (underline-minimum-offset display integer "23.1")
 545              (mouse-autoselect-window
 546               display (choice
 547                        (const :tag "Off (nil)" :value nil)
 548                        (const :tag "Immediate" :value t)
 549                        (number :tag "Delay by secs" :value 0.5)) "22.1")
 550              (tool-bar-style
 551               frames (choice
 552                       (const :tag "Images" :value image)
 553                       (const :tag "Text" :value text)
 554                       (const :tag "Both" :value both)
 555                       (const :tag "Both-horiz" :value both-horiz)
 556                       (const :tag "Text-image-horiz" :value text-image-horiz)
 557                       (const :tag "System default" :value nil)) "24.1")
 558              (tool-bar-max-label-size frames integer "24.1")
 559              (auto-hscroll-mode scrolling
 560                                 (choice
 561                                  (const :tag "Don't scroll automatically"
 562                                         :value nil)
 563                                  (const :tag "Scroll the entire window"
 564                                         :value t)
 565                                  (const :tag "Scroll only the current line"
 566                                         :value current-line))
 567                                 "26.1")
 568              (void-text-area-pointer cursor
 569                                      (choice
 570                                       (const :tag "Standard (text pointer)" :value nil)
 571                                       (const :tag "Arrow" :value arrow)
 572                                       (const :tag "Text pointer" :value text)
 573                                       (const :tag "Hand" :value hand)
 574                                       (const :tag "Vertical dragger" :value vdrag)
 575                                       (const :tag "Horizontal dragger" :value hdrag)
 576                                       (const :tag "Same as mode line" :value modeline)
 577                                       (const :tag "Hourglass" :value hourglass)))
 578              (display-hourglass cursor boolean)
 579              (hourglass-delay cursor number)
 580              (resize-mini-windows
 581               windows (choice
 582                        (const :tag "Off (nil)" :value nil)
 583                        (const :tag "Fit (t)" :value t)
 584                        (const :tag "Grow only" :value grow-only))
 585               "25.1")
 586              (display-raw-bytes-as-hex display boolean "26.1")
 587              (display-line-numbers display-line-numbers
 588                                    (choice
 589                                     (const :tag "Off (nil)" :value nil)
 590                                     (const :tag "Absolute line numbers"
 591                                            :value t)
 592                                     (const :tag "Relative line numbers"
 593                                            :value relative)
 594                                     (const :tag "Visually relative line numbers"
 595                                            :value visual))
 596                                    "26.1")
 597              (display-line-numbers-width display-line-numbers
 598                                  (choice
 599                                   (const :tag "Dynamically computed"
 600                                          :value nil)
 601                                   (integer :menu-tag "Fixed number of columns"
 602                                            :value 2
 603                                            :format "%v"))
 604                                  "26.1")
 605              (display-line-numbers-current-absolute display-line-numbers
 606                                  (choice
 607                                   (const :tag "Display actual number of current line"
 608                                          :value t)
 609                                   (const :tag "Display zero as number of current line"
 610                                          :value nil))
 611                                  "26.1")
 612              (display-line-numbers-widen display-line-numbers
 613                                  (choice
 614                                   (const :tag "Disregard narrowing when calculating line numbers"
 615                                          :value t)
 616                                   (const :tag "Count lines from beginning of narrowed region"
 617                                          :value nil))
 618                                  "26.1")
 619              ;; xfaces.c
 620              (scalable-fonts-allowed display boolean "22.1")
 621              ;; xfns.c
 622              (x-bitmap-file-path installation
 623                                  (repeat (directory :format "%v")))
 624              (x-gtk-use-old-file-dialog menu boolean "22.1")
 625              (x-gtk-show-hidden-files menu boolean "22.1")
 626              (x-gtk-file-dialog-help-text menu boolean "22.1")
 627              (x-gtk-use-system-tooltips tooltip boolean "23.3")
 628              ;; xterm.c
 629              (x-use-underline-position-properties display boolean "22.1")
 630              (x-underline-at-descent-line display boolean "22.1")
 631              (x-stretch-cursor display boolean "21.1")
 632              (scroll-bar-adjust-thumb-portion windows boolean "24.4")
 633              ;; xselect.c
 634              (x-select-enable-clipboard-manager killing boolean "24.1")
 635              ;; xsettings.c
 636              (font-use-system-font font-selection boolean "23.2")))
 637     (setq ;; If we did not specify any standard value expression above,
 638           ;; use the current value as the standard value.
 639           standard (if (setq prop (memq :standard rest))
 640                        (cadr prop)
 641                      (if (default-boundp symbol)
 642                          (funcall quoter (default-value symbol))))
 643           ;; Don't complain about missing variables which are
 644           ;; irrelevant to this platform.
 645           native-p (save-match-data
 646                      (cond
 647                       ((string-match "\\`dos-" (symbol-name symbol))
 648                        (eq system-type 'ms-dos))
 649                       ((string-match "\\`w32-" (symbol-name symbol))
 650                        (eq system-type 'windows-nt))
 651                       ((string-match "\\`ns-" (symbol-name symbol))
 652                        (featurep 'ns))
 653                       ((string-match "\\`x-.*gtk" (symbol-name symbol))
 654                        (featurep 'gtk))
 655                       ((string-match "clipboard-manager" (symbol-name symbol))
 656                        (boundp 'x-select-enable-clipboard-manager))
 657                       ((string-match "\\`x-" (symbol-name symbol))
 658                        (fboundp 'x-create-frame))
 659                       ((string-match "selection" (symbol-name symbol))
 660                        (fboundp 'x-selection-exists-p))
 661                       ((string-match "fringe" (symbol-name symbol))
 662                        (fboundp 'define-fringe-bitmap))
 663                       ((string-match "\\`imagemagick" (symbol-name symbol))
 664                        (fboundp 'imagemagick-types))
 665                       ((equal "font-use-system-font" (symbol-name symbol))
 666                        (featurep 'system-font-setting))
 667                       ;; Conditioned on x-create-frame, because that's
 668                       ;; the condition for loadup.el to preload tool-bar.el.
 669                       ((string-match "tool-bar-" (symbol-name symbol))
 670                        (fboundp 'x-create-frame))
 671                       ((equal "vertical-centering-font-regexp"
 672                               (symbol-name symbol))
 673                        ;; Any function from fontset.c will do.
 674                        (fboundp 'new-fontset))
 675                       ((equal "scroll-bar-adjust-thumb-portion"
 676                               (symbol-name symbol))
 677                        (featurep 'x))
 678                       (t t))))
 679     (if (not (boundp symbol))
 680         ;; If variables are removed from C code, give an error here!
 681         (and native-p
 682              (message "Note, built-in variable `%S' not bound" symbol))
 683       ;; Save the standard value, unless we already did.
 684       (or (get symbol 'standard-value)
 685           (put symbol 'standard-value (list standard)))
 686       ;; We need these properties independent of whether cus-start is loaded.
 687       (if (setq prop (memq :safe rest))
 688           (put symbol 'safe-local-variable (cadr prop)))
 689       (if (setq prop (memq :risky rest))
 690           (put symbol 'risky-local-variable (cadr prop)))
 691       (if (setq prop (memq :set rest))
 692           (put symbol 'custom-set (cadr prop)))
 693       ;; Note this is the _only_ initialize property we handle.
 694       (if (eq (cadr (memq :initialize rest)) 'custom-initialize-delay)
 695           ;; These vars are defined early and should hence be initialized
 696           ;; early, even if this file happens to be loaded late.  so add them
 697           ;; to the end of custom-delayed-init-variables.  Otherwise,
 698           ;; auto-save-file-name-transforms will appear in M-x customize-rogue.
 699           (add-to-list 'custom-delayed-init-variables symbol 'append))
 700       ;; If this is NOT while dumping Emacs, set up the rest of the
 701       ;; customization info.  This is the stuff that is not needed
 702       ;; until someone does M-x customize etc.
 703       (unless purify-flag
 704         ;; Add it to the right group(s).
 705         (if (listp group)
 706             (dolist (g group)
 707               (custom-add-to-group g symbol 'custom-variable))
 708           (custom-add-to-group group symbol 'custom-variable))
 709         ;; Set the type.
 710         (put symbol 'custom-type type)
 711         (if version (put symbol 'custom-version version))
 712         (while rest
 713           (setq prop (car rest)
 714                 propval (cadr rest)
 715                 rest (nthcdr 2 rest))
 716           (cond ((memq prop '(:standard :risky :safe :set))) ; handled above
 717                 ((eq prop :tag)
 718                  (put symbol 'custom-tag propval))))))))
 719
 720 (custom-add-to-group 'font-lock 'open-paren-in-column-0-is-defun-start
 721                      'custom-variable)
 722
 723 ;; Record cus-start as loaded if we have set up all the info that we can.
 724 ;; Don't record it as loaded if we have only set up the standard values
 725 ;; and safe/risky properties.
 726 (unless purify-flag
 727   (provide 'cus-start))
 728
 729 ;;; cus-start.el ends here