(gc_sweep): Add comment.
[emacs.git] / lisp / cus-start.el
blob20bc6ade7402383ed91e85c444ee5814ece8f81f
1 ;;; cus-start.el --- define customization properties of builtins.
2 ;;
3 ;; Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
4 ;;
5 ;; Author: Per Abrahamsen <abraham@dina.kvl.dk>
6 ;; Keywords: internal
8 ;; This file is part of GNU Emacs.
10 ;; GNU Emacs is free software; you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation; either version 2, or (at your option)
13 ;; any later version.
15 ;; GNU Emacs is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs; see the file COPYING. If not, write to the
22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 ;; Boston, MA 02111-1307, USA.
25 ;;; Commentary:
27 ;; This file adds customize support for built-in variables.
29 ;; While dumping Emacs, this file is loaded, but it only records
30 ;; the standard values; it does not do the rest of the job.
31 ;; Later on, if the user makes a customization buffer,
32 ;; this file is loaded again with (require 'cus-start);
33 ;; then it does the whole job.
35 ;;; Code:
37 (let ((all '(;; abbrev.c
38 (abbrev-all-caps abbrev-mode boolean)
39 (pre-abbrev-expand-hook abbrev-mode hook)
40 ;; alloc.c
41 (gc-cons-threshold alloc integer)
42 (undo-limit undo integer)
43 (undo-strong-limit undo integer)
44 (garbage-collection-messages alloc boolean)
45 ;; buffer.c
46 (mode-line-format modeline sexp) ;Hard to do right.
47 (default-major-mode internal function)
48 (enable-multibyte-characters mule boolean)
49 (case-fold-search matching boolean)
50 (fill-column fill integer)
51 (left-margin fill integer)
52 (tab-width editing-basics integer)
53 (ctl-arrow display boolean)
54 (truncate-lines display boolean)
55 (selective-display-ellipses display boolean)
56 (transient-mark-mode editing-basics boolean)
57 (indicate-empty-lines display boolean "21.1")
58 (scroll-up-aggressively windows boolean "21.1")
59 (scroll-down-aggressively windows boolean "21.1")
60 ;; callint.c
61 (mark-even-if-inactive editing-basics boolean)
62 ;; callproc.c
63 (shell-file-name execute file)
64 (exec-path execute
65 (repeat (choice (const :tag "default" nil)
66 (file :format "%v"))))
67 ;; coding.c
68 (inhibit-eol-conversion mule boolean)
69 (eol-mnemonic-undecided mule string)
70 (eol-mnemonic-unix mule string)
71 (eol-mnemonic-dos mule string)
72 (eol-mnemonic-mac mule string)
73 (file-coding-system-alist
74 mule
75 (alist
76 :key-type (regexp :tag "File regexp")
77 :value-type (choice
78 :value (undecided . undecided)
79 (cons :tag "Encoding/decoding pair"
80 :value (undecided . undecided)
81 (coding-system :tag "Decoding")
82 (coding-system :tag "Encoding"))
83 (coding-system :tag "Single coding system"
84 :value undecided)
85 (function :value ignore))))
86 ;; dired.c
87 (completion-ignored-extensions dired
88 (repeat (string :format "%v")))
89 ;; dispnew.c
90 (baud-rate display integer)
91 (inverse-video display boolean)
92 (visible-bell display boolean)
93 (no-redraw-on-reenter display boolean)
94 ;; editfns.c
95 (user-full-name mail string)
96 ;; eval.c
97 (max-specpdl-size limits integer)
98 (max-lisp-eval-depth limits integer)
99 (stack-trace-on-error debug
100 (choice (const :tag "off")
101 (repeat :menu-tag "When"
102 :value (nil)
103 (symbol :format "%v"))
104 (const :tag "always" t)))
105 (debug-on-error debug
106 (choice (const :tag "off")
107 (repeat :menu-tag "When"
108 :value (nil)
109 (symbol :format "%v"))
110 (const :tag "always" t)))
111 (debug-ignored-errors debug (repeat (choice symbol regexp)))
112 (debug-on-quit debug
113 (choice (const :tag "off")
114 (repeat :menu-tag "When"
115 :value (nil)
116 (symbol :format "%v"))
117 (const :tag "always" t)))
118 ;; fileio.c
119 (insert-default-directory minibuffer boolean)
120 ;; fns.c
121 (use-dialog-box menu boolean "21.1")
122 ;; frame.c
123 (default-frame-alist frames
124 (repeat (cons :format "%v"
125 (symbol :tag "Parameter")
126 (sexp :tag "Value"))))
127 ;; indent.c
128 (indent-tabs-mode fill boolean)
129 ;; keyboard.c
130 (meta-prefix-char keyboard character)
131 (auto-save-interval auto-save integer)
132 (auto-save-timeout auto-save (choice (const :tag "off" nil)
133 (integer :format "%v")))
134 (echo-keystrokes minibuffer number)
135 (polling-period keyboard integer)
136 (double-click-time mouse (restricted-sexp
137 :match-alternatives (integerp 'nil 't)))
138 (inhibit-local-menu-bar-menus menu boolean)
139 (help-char keyboard character)
140 (help-event-list keyboard (repeat (sexp :format "%v")))
141 (menu-prompting menu boolean)
142 (suggest-key-bindings keyboard (choice (const :tag "off" nil)
143 (integer :tag "time" 2)
144 (other :tag "on")))
145 ;; lread.c
147 ;; This is not good news because it will use the wrong
148 ;; version-specific directories when you upgrade. We need
149 ;; customization of the front of the list, maintaining the standard
150 ;; value intact at the back.
151 ;;; (load-path environment
152 ;;; (repeat (choice :tag "[Current dir?]"
153 ;;; :format "%[Current dir?%] %v"
154 ;;; (const :tag " current dir" nil)
155 ;;; (directory :format "%v"))))
156 ;; minibuf.c
157 (completion-auto-help minibuffer boolean)
158 (enable-recursive-minibuffers minibuffer boolean)
159 (minibuffer-prompt-properties
160 minibuffer
161 (list
162 (checklist :inline t
163 (const :tag "Read-Only"
164 :doc "Prevent prompt from being modified"
165 :format "%t%n%h"
166 :inline t
167 (read-only t))
168 (const :tag "Inviolable"
169 :doc "Prevent point from ever entering prompt"
170 :format "%t%n%h"
171 :inline t
172 (point-entered minibuffer-avoid-prompt)))
173 (repeat :inline t
174 :tag "Other Properties"
175 (list :inline t
176 :format "%v"
177 (symbol :tag "Property")
178 (sexp :tag "Value"))))
179 "21.1")
180 (minibuffer-auto-raise minibuffer boolean)
181 ;; options property set at end
182 (read-buffer-function minibuffer
183 (choice (const nil)
184 (function-item iswitchb-read-buffer)
185 function))
186 ;; msdos.c
187 (dos-unsupported-char-glyph display integer)
188 ;; process.c
189 (delete-exited-processes processes-basics boolean)
190 ;; syntax.c
191 (parse-sexp-ignore-comments editing-basics boolean)
192 (words-include-escapes editing-basics boolean)
193 ;; window.c
194 (temp-buffer-show-function windows function)
195 (display-buffer-function windows function)
196 (pop-up-frames frames boolean)
197 (pop-up-frame-function frames function)
198 (special-display-buffer-names
199 frames
200 (repeat (choice :tag "Buffer"
201 :value ""
202 (string :format "%v")
203 (cons :tag "With attributes"
204 :format "%v"
205 :value ("" . nil)
206 (string :format "%v")
207 (repeat :tag "Attributes"
208 (cons :format "%v"
209 (symbol :tag "Parameter")
210 (sexp :tag "Value")))))))
211 (special-display-regexps
212 frames
213 (repeat (choice :tag "Buffer"
214 :value ""
215 (regexp :format "%v")
216 (cons :tag "With attributes"
217 :format "%v"
218 :value ("" . nil)
219 (regexp :format "%v")
220 (repeat :tag "Attributes"
221 (cons :format "%v"
222 (symbol :tag "Parameter")
223 (sexp :tag "Value")))))))
224 (special-display-function frames function)
225 (same-window-buffer-names windows (repeat (string :format "%v")))
226 (same-window-regexps windows (repeat (regexp :format "%v")))
227 (pop-up-windows windows boolean)
228 (even-window-heights windows boolean)
229 (next-screen-context-lines windows integer)
230 (split-height-threshold windows integer)
231 (window-min-height windows integer)
232 (window-min-width windows integer)
233 (scroll-preserve-screen-position windows boolean)
234 (display-buffer-reuse-frames windows boolean "21.1")
235 ;; xdisp.c
236 (scroll-step windows integer)
237 (scroll-conservatively windows integer)
238 (scroll-margin windows integer)
239 (truncate-partial-width-windows display boolean)
240 (mode-line-inverse-video modeline boolean)
241 (line-number-display-limit display
242 (choice integer
243 (const :tag "No limit" nil)))
244 (highlight-nonselected-windows display boolean)
245 (message-log-max debug (choice (const :tag "Disable" nil)
246 (integer :menu-tag "lines"
247 :format "%v")
248 (other :tag "Unlimited" t)))
249 (unibyte-display-via-language-environment mule boolean)
250 ;; xfns.c
251 (x-bitmap-file-path installation
252 (repeat (directory :format "%v")))
253 ;; xterm.c
254 (x-stretch-cursor display boolean "21.1")))
255 this symbol group type native-p version
256 ;; This function turns a value
257 ;; into an expression which produces that value.
258 (quoter (lambda (sexp)
259 (if (or (memq sexp '(t nil))
260 (keywordp sexp)
261 (and (listp sexp)
262 (memq (car sexp) '(lambda)))
263 (stringp sexp)
264 ;; (and (fboundp 'characterp)
265 ;; (characterp sexp))
266 (numberp sexp))
267 sexp
268 (list 'quote sexp)))))
269 (while all
270 (setq this (car all)
271 all (cdr all)
272 symbol (nth 0 this)
273 group (nth 1 this)
274 type (nth 2 this)
275 version (nth 3 this)
276 ;; Don't complain about missing variables which are
277 ;; irrelevant to this platform.
278 native-p (save-match-data
279 (cond
280 ((string-match "\\`dos-" (symbol-name symbol))
281 (eq system-type 'ms-dos))
282 ((string-match "\\`w32-" (symbol-name symbol))
283 (eq system-type 'windows-nt))
284 (t t))))
285 (if (not (boundp symbol))
286 ;; If variables are removed from C code, give an error here!
287 (and native-p
288 (message "Note, built-in variable `%S' not bound" symbol))
289 ;; Save the standard value, unless we already did.
290 (or (get symbol 'standard-value)
291 (put symbol 'standard-value
292 (list (funcall quoter (default-value symbol)))))
293 ;; If this is NOT while dumping Emacs,
294 ;; set up the rest of the customization info.
295 (unless purify-flag
296 ;; Add it to the right group.
297 (custom-add-to-group group symbol 'custom-variable)
298 ;; Set the type.
299 (put symbol 'custom-type type)
300 (put symbol 'custom-version version)))))
302 (custom-add-to-group 'iswitchb 'read-buffer-function 'custom-variable)
304 ;; Record cus-start as loaded
305 ;; if we have set up all the info that we can set up.
306 ;; Don't record cus-start as loaded
307 ;; if we have set up only the standard values.
308 (unless purify-flag
309 (provide 'cus-start))
311 ;;; cus-start.el ends here.