Commit | Line | Data |
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d543e20b | 1 | ;;; custom.el -- Tools for declaring and initializing options. |
41487370 | 2 | ;; |
70647e33 | 3 | ;; Copyright (C) 1996, 1997, 1999 Free Software Foundation, Inc. |
41487370 | 4 | ;; |
d543e20b | 5 | ;; Author: Per Abrahamsen <abraham@dina.kvl.dk> |
32651a48 | 6 | ;; Maintainer: FSF |
d543e20b | 7 | ;; Keywords: help, faces |
d543e20b | 8 | |
c2383d2d RS |
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 2, or (at your option) | |
14 | ;; 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; see the file COPYING. If not, write to the | |
23 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
24 | ;; Boston, MA 02111-1307, USA. | |
25 | ||
d543e20b | 26 | ;;; Commentary: |
41487370 | 27 | ;; |
d543e20b PA |
28 | ;; This file only contain the code needed to declare and initialize |
29 | ;; user options. The code to customize options is autoloaded from | |
70647e33 | 30 | ;; `cus-edit.el' and is documented in the Emacs Lisp Reference manual. |
41487370 | 31 | |
d543e20b | 32 | ;; The code implementing face declarations is in `cus-face.el' |
41487370 LMI |
33 | |
34 | ;;; Code: | |
35 | ||
d543e20b PA |
36 | (require 'widget) |
37 | ||
bd042c03 PA |
38 | (defvar custom-define-hook nil |
39 | ;; Customize information for this option is in `cus-edit.el'. | |
40 | "Hook called after defining each customize option.") | |
41 | ||
d543e20b PA |
42 | ;;; The `defcustom' Macro. |
43 | ||
6d528fc5 PA |
44 | (defun custom-initialize-default (symbol value) |
45 | "Initialize SYMBOL with VALUE. | |
46 | This will do nothing if symbol already has a default binding. | |
47 | Otherwise, if symbol has a `saved-value' property, it will evaluate | |
48 | the car of that and used as the default binding for symbol. | |
49 | Otherwise, VALUE will be evaluated and used as the default binding for | |
50 | symbol." | |
bd042c03 | 51 | (unless (default-boundp symbol) |
25ac13b5 | 52 | ;; Use the saved value if it exists, otherwise the standard setting. |
d543e20b PA |
53 | (set-default symbol (if (get symbol 'saved-value) |
54 | (eval (car (get symbol 'saved-value))) | |
6d528fc5 PA |
55 | (eval value))))) |
56 | ||
57 | (defun custom-initialize-set (symbol value) | |
71bd46d2 RS |
58 | "Initialize SYMBOL based on VALUE. |
59 | If the symbol doesn't have a default binding already, | |
60 | then set it using its `:set' function (or `set-default' if it has none). | |
61 | The value is either the value in the symbol's `saved-value' property, | |
62 | if any, or VALUE." | |
6d528fc5 PA |
63 | (unless (default-boundp symbol) |
64 | (funcall (or (get symbol 'custom-set) 'set-default) | |
70647e33 | 65 | symbol |
6d528fc5 PA |
66 | (if (get symbol 'saved-value) |
67 | (eval (car (get symbol 'saved-value))) | |
68 | (eval value))))) | |
69 | ||
70 | (defun custom-initialize-reset (symbol value) | |
71bd46d2 RS |
71 | "Initialize SYMBOL based on VALUE. |
72 | Set the symbol, using its `:set' function (or `set-default' if it has none). | |
73 | The value is either the symbol's current value | |
74 | \(as obtained using the `:get' function), if any, | |
75 | or the value in the symbol's `saved-value' property if any, | |
76 | or (last of all) VALUE." | |
6d528fc5 | 77 | (funcall (or (get symbol 'custom-set) 'set-default) |
70647e33 | 78 | symbol |
6d528fc5 PA |
79 | (cond ((default-boundp symbol) |
80 | (funcall (or (get symbol 'custom-get) 'default-value) | |
81 | symbol)) | |
82 | ((get symbol 'saved-value) | |
83 | (eval (car (get symbol 'saved-value)))) | |
84 | (t | |
85 | (eval value))))) | |
86 | ||
87 | (defun custom-initialize-changed (symbol value) | |
88 | "Initialize SYMBOL with VALUE. | |
70647e33 | 89 | Like `custom-initialize-reset', but only use the `:set' function if the |
71bd46d2 RS |
90 | not using the standard setting. |
91 | For the standard setting, use the `set-default'." | |
6d528fc5 PA |
92 | (cond ((default-boundp symbol) |
93 | (funcall (or (get symbol 'custom-set) 'set-default) | |
94 | symbol | |
95 | (funcall (or (get symbol 'custom-get) 'default-value) | |
96 | symbol))) | |
97 | ((get symbol 'saved-value) | |
98 | (funcall (or (get symbol 'custom-set) 'set-default) | |
99 | symbol | |
100 | (eval (car (get symbol 'saved-value))))) | |
101 | (t | |
102 | (set-default symbol (eval value))))) | |
103 | ||
255d8b97 RS |
104 | (defun custom-declare-variable (symbol default doc &rest args) |
105 | "Like `defcustom', but SYMBOL and DEFAULT are evaluated as normal arguments. | |
106 | DEFAULT should be an expression to evaluate to compute the default value, | |
107 | not the default value itself." | |
25ac13b5 | 108 | ;; Remember the standard setting. |
255d8b97 | 109 | (put symbol 'standard-value (list default)) |
bd042c03 PA |
110 | ;; Maybe this option was rogue in an earlier version. It no longer is. |
111 | (when (get symbol 'force-value) | |
bd042c03 | 112 | (put symbol 'force-value nil)) |
d543e20b PA |
113 | (when doc |
114 | (put symbol 'variable-documentation doc)) | |
71bd46d2 | 115 | (let ((initialize 'custom-initialize-reset) |
6d528fc5 | 116 | (requests nil)) |
70647e33 | 117 | (while args |
6d528fc5 | 118 | (let ((arg (car args))) |
d543e20b | 119 | (setq args (cdr args)) |
6d528fc5 PA |
120 | (unless (symbolp arg) |
121 | (error "Junk in args %S" args)) | |
122 | (let ((keyword arg) | |
123 | (value (car args))) | |
124 | (unless args | |
125 | (error "Keyword %s is missing an argument" keyword)) | |
126 | (setq args (cdr args)) | |
127 | (cond ((eq keyword :initialize) | |
128 | (setq initialize value)) | |
129 | ((eq keyword :set) | |
130 | (put symbol 'custom-set value)) | |
131 | ((eq keyword :get) | |
132 | (put symbol 'custom-get value)) | |
133 | ((eq keyword :require) | |
67efacf8 | 134 | (setq requests (cons value requests))) |
6d528fc5 | 135 | ((eq keyword :type) |
3920868a | 136 | (put symbol 'custom-type (purecopy value))) |
6d528fc5 PA |
137 | ((eq keyword :options) |
138 | (if (get symbol 'custom-options) | |
139 | ;; Slow safe code to avoid duplicates. | |
b3489c06 DL |
140 | (mapc (lambda (option) |
141 | (custom-add-option symbol option)) | |
6d528fc5 PA |
142 | value) |
143 | ;; Fast code for the common case. | |
144 | (put symbol 'custom-options (copy-sequence value)))) | |
145 | (t | |
146 | (custom-handle-keyword symbol keyword value | |
147 | 'custom-variable)))))) | |
148 | (put symbol 'custom-requests requests) | |
149 | ;; Do the actual initialization. | |
255d8b97 | 150 | (funcall initialize symbol default)) |
7c573adb | 151 | (setq current-load-list (cons symbol current-load-list)) |
d543e20b PA |
152 | (run-hooks 'custom-define-hook) |
153 | symbol) | |
41487370 | 154 | |
d543e20b PA |
155 | (defmacro defcustom (symbol value doc &rest args) |
156 | "Declare SYMBOL as a customizable variable that defaults to VALUE. | |
157 | DOC is the variable documentation. | |
41487370 | 158 | |
d543e20b PA |
159 | Neither SYMBOL nor VALUE needs to be quoted. |
160 | If SYMBOL is not already bound, initialize it to VALUE. | |
161 | The remaining arguments should have the form | |
41487370 | 162 | |
70647e33 | 163 | [KEYWORD VALUE]... |
41487370 | 164 | |
e612f4bd | 165 | The following keywords are meaningful: |
41487370 | 166 | |
6d528fc5 PA |
167 | :type VALUE should be a widget type for editing the symbols value. |
168 | The default is `sexp'. | |
d543e20b | 169 | :options VALUE should be a list of valid members of the widget type. |
70647e33 | 170 | :group VALUE should be a customization group. |
d543e20b | 171 | Add SYMBOL to that group. |
e612f4bd RS |
172 | :initialize |
173 | VALUE should be a function used to initialize the | |
6d528fc5 PA |
174 | variable. It takes two arguments, the symbol and value |
175 | given in the `defcustom' call. The default is | |
70647e33 DL |
176 | `custom-initialize-default' |
177 | :set VALUE should be a function to set the value of the symbol. | |
6d528fc5 | 178 | It takes two arguments, the symbol to set and the value to |
7ddd6031 | 179 | give it. The default choice of function is `custom-set-default'. |
6d528fc5 PA |
180 | :get VALUE should be a function to extract the value of symbol. |
181 | The function takes one argument, a symbol, and should return | |
e612f4bd | 182 | the current value for that symbol. The default choice of function |
70647e33 | 183 | is `custom-default-value'. |
e612f4bd RS |
184 | :require |
185 | VALUE should be a feature symbol. If you save a value | |
186 | for this option, then when your `.emacs' file loads the value, | |
187 | it does (require VALUE) first. | |
2538076d DL |
188 | :version |
189 | VALUE should be a string specifying that the variable was | |
190 | first introduced, or its default value was changed, in Emacs | |
191 | version VERSION. | |
41487370 | 192 | |
305ec106 | 193 | Read the section about customization in the Emacs Lisp manual for more |
d543e20b | 194 | information." |
d7c0adec RS |
195 | ;; It is better not to use backquote in this file, |
196 | ;; because that makes a bootstrapping problem | |
197 | ;; if you need to recompile all the Lisp files using interpreted code. | |
198 | (nconc (list 'custom-declare-variable | |
199 | (list 'quote symbol) | |
200 | (list 'quote value) | |
201 | doc) | |
202 | args)) | |
41487370 | 203 | |
d543e20b | 204 | ;;; The `defface' Macro. |
41487370 | 205 | |
d543e20b PA |
206 | (defmacro defface (face spec doc &rest args) |
207 | "Declare FACE as a customizable face that defaults to SPEC. | |
208 | FACE does not need to be quoted. | |
41487370 | 209 | |
d543e20b | 210 | Third argument DOC is the face documentation. |
41487370 | 211 | |
d543e20b PA |
212 | If FACE has been set with `custom-set-face', set the face attributes |
213 | as specified by that function, otherwise set the face attributes | |
214 | according to SPEC. | |
41487370 | 215 | |
d543e20b | 216 | The remaining arguments should have the form |
41487370 | 217 | |
d543e20b | 218 | [KEYWORD VALUE]... |
41487370 | 219 | |
aafc86d2 | 220 | The following KEYWORDs are defined: |
41487370 | 221 | |
d543e20b PA |
222 | :group VALUE should be a customization group. |
223 | Add FACE to that group. | |
41487370 | 224 | |
d543e20b | 225 | SPEC should be an alist of the form ((DISPLAY ATTS)...). |
41487370 | 226 | |
aafc86d2 RS |
227 | The first element of SPEC where the DISPLAY matches the frame |
228 | is the one that takes effect in that frame. The ATTRs in this | |
229 | element take effect; the other elements are ignored, on that frame. | |
41487370 | 230 | |
aafc86d2 RS |
231 | ATTS is a list of face attributes followed by their values: |
232 | (ATTR VALUE ATTR VALUE...) | |
9e5962d0 GM |
233 | |
234 | The possible attributes are `:family', `:width', `:height', `:weight', | |
235 | `:slant', `:underline', `:overline', `:strike-through', `:box', | |
236 | `:foreground', `:background', `:stipple', and `:inverse-video'. | |
41487370 | 237 | |
aafc86d2 RS |
238 | DISPLAY can either be the symbol t, which will match all frames, or an |
239 | alist of the form \((REQ ITEM...)...). For the DISPLAY to match a | |
240 | FRAME, the REQ property of the frame must match one of the ITEM. The | |
241 | following REQ are defined: | |
41487370 | 242 | |
d543e20b | 243 | `type' (the value of `window-system') |
48f68b55 GM |
244 | Under X, in addition to the values `window-system' can take, |
245 | `motif', `lucid' and `x-toolkit' are allowed, and match when | |
246 | the Motif toolkit, Lucid toolkit, or any X toolkit is in use. | |
41487370 | 247 | |
d543e20b PA |
248 | `class' (the frame's color support) |
249 | Should be one of `color', `grayscale', or `mono'. | |
41487370 | 250 | |
d543e20b PA |
251 | `background' (what color is used for the background text) |
252 | Should be one of `light' or `dark'. | |
41487370 | 253 | |
305ec106 | 254 | Read the section about customization in the Emacs Lisp manual for more |
d543e20b | 255 | information." |
d7c0adec RS |
256 | ;; It is better not to use backquote in this file, |
257 | ;; because that makes a bootstrapping problem | |
258 | ;; if you need to recompile all the Lisp files using interpreted code. | |
259 | (nconc (list 'custom-declare-face (list 'quote face) spec doc) args)) | |
41487370 | 260 | |
d543e20b | 261 | ;;; The `defgroup' Macro. |
41487370 | 262 | |
d543e20b PA |
263 | (defun custom-declare-group (symbol members doc &rest args) |
264 | "Like `defgroup', but SYMBOL is evaluated as a normal argument." | |
70647e33 | 265 | (while members |
6d528fc5 PA |
266 | (apply 'custom-add-to-group symbol (car members)) |
267 | (setq members (cdr members))) | |
d543e20b PA |
268 | (put symbol 'custom-group (nconc members (get symbol 'custom-group))) |
269 | (when doc | |
32651a48 DL |
270 | ;; This text doesn't get into DOC. |
271 | (put symbol 'group-documentation (purecopy doc))) | |
70647e33 | 272 | (while args |
d543e20b PA |
273 | (let ((arg (car args))) |
274 | (setq args (cdr args)) | |
275 | (unless (symbolp arg) | |
276 | (error "Junk in args %S" args)) | |
277 | (let ((keyword arg) | |
278 | (value (car args))) | |
279 | (unless args | |
280 | (error "Keyword %s is missing an argument" keyword)) | |
281 | (setq args (cdr args)) | |
282 | (cond ((eq keyword :prefix) | |
283 | (put symbol 'custom-prefix value)) | |
284 | (t | |
285 | (custom-handle-keyword symbol keyword value | |
286 | 'custom-group)))))) | |
287 | (run-hooks 'custom-define-hook) | |
288 | symbol) | |
289 | ||
290 | (defmacro defgroup (symbol members doc &rest args) | |
291 | "Declare SYMBOL as a customization group containing MEMBERS. | |
292 | SYMBOL does not need to be quoted. | |
293 | ||
294 | Third arg DOC is the group documentation. | |
295 | ||
296 | MEMBERS should be an alist of the form ((NAME WIDGET)...) where | |
5e5e5b54 AS |
297 | NAME is a symbol and WIDGET is a widget for editing that symbol. |
298 | Useful widgets are `custom-variable' for editing variables, | |
d543e20b PA |
299 | `custom-face' for edit faces, and `custom-group' for editing groups. |
300 | ||
301 | The remaining arguments should have the form | |
302 | ||
70647e33 | 303 | [KEYWORD VALUE]... |
d543e20b | 304 | |
2538076d | 305 | The following KEYWORDs are defined: |
d543e20b | 306 | |
2538076d DL |
307 | :group VALUE should be a customization group. |
308 | Add SYMBOL to that group. | |
309 | ||
310 | :version VALUE should be a string specifying that the group was introduced | |
311 | in Emacs version VERSION. | |
d543e20b | 312 | |
305ec106 | 313 | Read the section about customization in the Emacs Lisp manual for more |
d543e20b | 314 | information." |
d7c0adec RS |
315 | ;; It is better not to use backquote in this file, |
316 | ;; because that makes a bootstrapping problem | |
317 | ;; if you need to recompile all the Lisp files using interpreted code. | |
318 | (nconc (list 'custom-declare-group (list 'quote symbol) members doc) args)) | |
d543e20b PA |
319 | |
320 | (defun custom-add-to-group (group option widget) | |
321 | "To existing GROUP add a new OPTION of type WIDGET. | |
322 | If there already is an entry for that option, overwrite it." | |
323 | (let* ((members (get group 'custom-group)) | |
324 | (old (assq option members))) | |
325 | (if old | |
326 | (setcar (cdr old) widget) | |
327 | (put group 'custom-group (nconc members (list (list option widget))))))) | |
328 | ||
329 | ;;; Properties. | |
330 | ||
331 | (defun custom-handle-all-keywords (symbol args type) | |
332 | "For customization option SYMBOL, handle keyword arguments ARGS. | |
333 | Third argument TYPE is the custom option type." | |
70647e33 | 334 | (while args |
d543e20b PA |
335 | (let ((arg (car args))) |
336 | (setq args (cdr args)) | |
337 | (unless (symbolp arg) | |
338 | (error "Junk in args %S" args)) | |
339 | (let ((keyword arg) | |
340 | (value (car args))) | |
341 | (unless args | |
342 | (error "Keyword %s is missing an argument" keyword)) | |
343 | (setq args (cdr args)) | |
70647e33 | 344 | (custom-handle-keyword symbol keyword value type))))) |
d543e20b PA |
345 | |
346 | (defun custom-handle-keyword (symbol keyword value type) | |
347 | "For customization option SYMBOL, handle KEYWORD with VALUE. | |
348 | Fourth argument TYPE is the custom option type." | |
32651a48 DL |
349 | (if purify-flag |
350 | (setq value (purecopy value))) | |
d543e20b PA |
351 | (cond ((eq keyword :group) |
352 | (custom-add-to-group value symbol type)) | |
c743cc52 KH |
353 | ((eq keyword :version) |
354 | (custom-add-version symbol value)) | |
d543e20b PA |
355 | ((eq keyword :link) |
356 | (custom-add-link symbol value)) | |
357 | ((eq keyword :load) | |
358 | (custom-add-load symbol value)) | |
359 | ((eq keyword :tag) | |
360 | (put symbol 'custom-tag value)) | |
13b5da04 GM |
361 | ((eq keyword :set-after) |
362 | (custom-add-dependencies symbol value)) | |
41487370 | 363 | (t |
2a6b2356 | 364 | (error "Unknown keyword %s" keyword)))) |
d543e20b | 365 | |
13b5da04 GM |
366 | (defun custom-add-dependencies (symbol value) |
367 | "To the custom option SYMBOL, add dependencies specified by VALUE. | |
368 | VALUE should be a list of symbols. For each symbol in that list, | |
369 | this specifies that SYMBOL should be set after the specified symbol, if | |
370 | both appear in constructs like `custom-set-variables'." | |
371 | (unless (listp value) | |
372 | (error "Invalid custom dependency `%s'" value)) | |
373 | (let* ((deps (get symbol 'custom-dependencies)) | |
374 | (new-deps deps)) | |
375 | (while value | |
376 | (let ((dep (car value))) | |
377 | (unless (symbolp dep) | |
378 | (error "Invalid custom dependency `%s'" dep)) | |
379 | (unless (memq dep new-deps) | |
380 | (setq new-deps (cons dep new-deps))) | |
381 | (setq value (cdr value)))) | |
382 | (unless (eq deps new-deps) | |
383 | (put symbol 'custom-dependencies new-deps)))) | |
384 | ||
d543e20b PA |
385 | (defun custom-add-option (symbol option) |
386 | "To the variable SYMBOL add OPTION. | |
387 | ||
388 | If SYMBOL is a hook variable, OPTION should be a hook member. | |
389 | For other types variables, the effect is undefined." | |
390 | (let ((options (get symbol 'custom-options))) | |
391 | (unless (member option options) | |
392 | (put symbol 'custom-options (cons option options))))) | |
393 | ||
394 | (defun custom-add-link (symbol widget) | |
395 | "To the custom option SYMBOL add the link WIDGET." | |
396 | (let ((links (get symbol 'custom-links))) | |
397 | (unless (member widget links) | |
32651a48 | 398 | (put symbol 'custom-links (cons (purecopy widget) links))))) |
d543e20b | 399 | |
c743cc52 KH |
400 | (defun custom-add-version (symbol version) |
401 | "To the custom option SYMBOL add the version VERSION." | |
32651a48 | 402 | (put symbol 'custom-version (purecopy version))) |
c743cc52 | 403 | |
d543e20b PA |
404 | (defun custom-add-load (symbol load) |
405 | "To the custom option SYMBOL add the dependency LOAD. | |
406 | LOAD should be either a library file name, or a feature name." | |
407 | (let ((loads (get symbol 'custom-loads))) | |
408 | (unless (member load loads) | |
32651a48 | 409 | (put symbol 'custom-loads (cons (purecopy load) loads))))) |
d543e20b PA |
410 | |
411 | ;;; Initializing. | |
412 | ||
7ddd6031 RS |
413 | (defvar custom-local-buffer nil |
414 | "Non-nil, in a Customization buffer, means customize a specific buffer. | |
415 | If this variable is non-nil, it should be a buffer, | |
416 | and it means customize the local bindings of that buffer. | |
417 | This variable is a permanent local, and it normally has a local binding | |
418 | in every Customization buffer.") | |
419 | (put 'custom-local-buffer 'permanent-local t) | |
420 | ||
d543e20b | 421 | (defun custom-set-variables (&rest args) |
70647e33 | 422 | "Initialize variables according to user preferences. |
d543e20b PA |
423 | |
424 | The arguments should be a list where each entry has the form: | |
425 | ||
70647e33 | 426 | (SYMBOL VALUE [NOW [REQUEST [COMMENT]]]) |
d543e20b PA |
427 | |
428 | The unevaluated VALUE is stored as the saved value for SYMBOL. | |
429 | If NOW is present and non-nil, VALUE is also evaluated and bound as | |
70647e33 DL |
430 | the default value for the SYMBOL. |
431 | REQUEST is a list of features we must require for SYMBOL. | |
432 | COMMENT is a comment string about SYMBOL." | |
13b5da04 GM |
433 | (setq args |
434 | (sort args | |
435 | (lambda (a1 a2) | |
436 | (let* ((sym1 (car a1)) | |
437 | (sym2 (car a2)) | |
438 | (1-then-2 (memq sym1 (get sym2 'custom-dependencies))) | |
439 | (2-then-1 (memq sym2 (get sym1 'custom-dependencies)))) | |
440 | (cond ((and 1-then-2 2-then-1) | |
441 | (error "Circular custom dependency between `%s' and `%s'" | |
442 | sym1 sym2)) | |
443 | (2-then-1 nil) | |
444 | (t t)))))) | |
70647e33 | 445 | (while args |
d543e20b PA |
446 | (let ((entry (car args))) |
447 | (if (listp entry) | |
6d528fc5 PA |
448 | (let* ((symbol (nth 0 entry)) |
449 | (value (nth 1 entry)) | |
450 | (now (nth 2 entry)) | |
451 | (requests (nth 3 entry)) | |
70647e33 | 452 | (comment (nth 4 entry)) |
98743206 KH |
453 | set) |
454 | (when requests | |
455 | (put symbol 'custom-requests requests) | |
b3489c06 | 456 | (mapc 'require requests)) |
98743206 | 457 | (setq set (or (get symbol 'custom-set) 'custom-set-default)) |
d543e20b | 458 | (put symbol 'saved-value (list value)) |
70647e33 | 459 | (put symbol 'saved-variable-comment comment) |
733e8270 | 460 | ;; Allow for errors in the case where the setter has |
a033ea13 DL |
461 | ;; changed between versions, say, but let the user know. |
462 | (condition-case data | |
733e8270 DL |
463 | (cond (now |
464 | ;; Rogue variable, set it now. | |
465 | (put symbol 'force-value t) | |
466 | (funcall set symbol (eval value))) | |
467 | ((default-boundp symbol) | |
468 | ;; Something already set this, overwrite it. | |
469 | (funcall set symbol (eval value)))) | |
a033ea13 DL |
470 | (error |
471 | (message "Error setting %s: %s" symbol data))) | |
70647e33 DL |
472 | (setq args (cdr args)) |
473 | (and (or now (default-boundp symbol)) | |
474 | (put symbol 'variable-comment comment))) | |
d543e20b | 475 | ;; Old format, a plist of SYMBOL VALUE pairs. |
bd042c03 PA |
476 | (message "Warning: old format `custom-set-variables'") |
477 | (ding) | |
478 | (sit-for 2) | |
d543e20b PA |
479 | (let ((symbol (nth 0 args)) |
480 | (value (nth 1 args))) | |
481 | (put symbol 'saved-value (list value))) | |
482 | (setq args (cdr (cdr args))))))) | |
483 | ||
7ddd6031 RS |
484 | (defun custom-set-default (variable value) |
485 | "Default :set function for a customizable variable. | |
486 | Normally, this sets the default value of VARIABLE to VALUE, | |
487 | but if `custom-local-buffer' is non-nil, | |
488 | this sets the local binding in that buffer instead." | |
489 | (if custom-local-buffer | |
490 | (with-current-buffer custom-local-buffer | |
491 | (set variable value)) | |
492 | (set-default variable value))) | |
493 | ||
d543e20b | 494 | ;;; The End. |
41487370 | 495 | |
a7d6bdac RS |
496 | ;; Process the defcustoms for variables loaded before this file. |
497 | (while custom-declare-variable-list | |
498 | (apply 'custom-declare-variable (car custom-declare-variable-list)) | |
499 | (setq custom-declare-variable-list (cdr custom-declare-variable-list))) | |
500 | ||
41487370 LMI |
501 | (provide 'custom) |
502 | ||
70647e33 | 503 | ;;; custom.el ends here |