1 ;;; facemenu.el --- create a face menu for interactively adding fonts to text
3 ;; Copyright (c) 1994, 1995, 1996 Free Software Foundation, Inc.
5 ;; Author: Boris Goldowsky <boris@gnu.org>
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)
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.
27 ;; This file defines a menu of faces (bold, italic, etc) which allows you to
28 ;; set the face used for a region of the buffer. Some faces also have
29 ;; keybindings, which are shown in the menu. Faces with names beginning with
30 ;; "fg:" or "bg:", as in "fg:red", are treated specially.
31 ;; Such faces are assumed to consist only of a foreground (if "fg:") or
32 ;; background (if "bg:") color. They are thus put into the color submenus
33 ;; rather than the general Face submenu. These faces can also be
34 ;; automatically created by selecting the "Other..." menu items in the
35 ;; "Foreground" and "Background" submenus.
37 ;; The menu also contains submenus for indentation and justification-changing
41 ;; Selecting a face from the menu or typing the keyboard equivalent will
42 ;; change the region to use that face. If you use transient-mark-mode and the
43 ;; region is not active, the face will be remembered and used for the next
44 ;; insertion. It will be forgotten if you move point or make other
45 ;; modifications before inserting or typing anything.
47 ;; Faces can be selected from the keyboard as well.
48 ;; The standard keybindings are M-g (or ESC g) + letter:
49 ;; M-g i = "set italic", M-g b = "set bold", etc.
52 ;; An alternative set of keybindings that may be easier to type can be set up
53 ;; using "Alt" or "Hyper" keys. This requires that you either have or create
54 ;; an Alt or Hyper key on your keyboard. On my keyboard, there is a key
55 ;; labeled "Alt", but to make it act as an Alt key I have to put this command
57 ;; xmodmap -e "add Mod3 = Alt_L"
58 ;; Or, I can make it into a Hyper key with this:
59 ;; xmodmap -e "keysym Alt_L = Hyper_L" -e "add Mod2 = Hyper_L"
60 ;; Check with local X-perts for how to do it on your system.
61 ;; Then you can define your keybindings with code like this in your .emacs:
62 ;; (setq facemenu-keybindings
63 ;; '((default . [?\H-d])
66 ;; (bold-italic . [?\H-l])
67 ;; (underline . [?\H-u])))
69 ;; (setq facemenu-keymap global-map)
70 ;; (define-key global-map [?\H-c] 'facemenu-set-foreground) ; set fg color
71 ;; (define-key global-map [?\H-C] 'facemenu-set-background) ; set bg color
73 ;; The order of the faces that appear in the menu and their keybindings can be
74 ;; controlled by setting the variables `facemenu-keybindings' and
75 ;; `facemenu-new-faces-at-end'. List faces that you don't use in documents
76 ;; (eg, `region') in `facemenu-unlisted-faces'.
79 ;; Bold and Italic do not combine to create bold-italic if you select them
80 ;; both, although most other combinations (eg bold + underline + some color)
81 ;; do the intuitive thing.
83 ;; There is at present no way to display what the faces look like in
86 ;; `list-faces-display' shows the faces in a different order than
87 ;; this menu, which could be confusing. I do /not/ sort the list
88 ;; alphabetically, because I like the default order: it puts the most
89 ;; basic, common fonts first.
91 ;; Please send me any other problems, comments or ideas.
97 ;;; Provide some binding for startup:
98 ;;;###autoload (define-key global-map "\M-g" 'facemenu-keymap)
99 ;;;###autoload (autoload 'facemenu-keymap "facemenu" "Keymap for face-changing commands." t 'keymap)
102 (define-key global-map
[C-down-mouse-2
] 'facemenu-menu
)
103 (define-key global-map
"\M-g" 'facemenu-keymap
)
105 (defgroup facemenu nil
106 "Create a face menu for interactively adding fonts to text"
110 (defcustom facemenu-keybindings
114 (bold-italic .
"l") ; {bold} intersect {italic} = {l}
116 "Alist of interesting faces and keybindings.
117 Each element is itself a list: the car is the name of the face,
118 the next element is the key to use as a keyboard equivalent of the menu item;
119 the binding is made in `facemenu-keymap'.
121 The faces specifically mentioned in this list are put at the top of
122 the menu, in the order specified. All other faces which are defined,
123 except for those in `facemenu-unlisted-faces', are listed after them,
124 but get no keyboard equivalents.
126 If you change this variable after loading facemenu.el, you will need to call
127 `facemenu-update' to make it take effect."
128 :type
'(repeat (cons face string
))
131 (defcustom facemenu-new-faces-at-end t
132 "*Where in the menu to insert newly-created faces.
133 This should be nil to put them at the top of the menu, or t to put them
134 just before \"Other\" at the end."
138 (defcustom facemenu-unlisted-faces
139 '(modeline region secondary-selection highlight scratch-face
140 (purecopy "^font-lock-") (purecopy "^gnus-") (purecopy "^message-")
141 (purecopy "^ediff-") (purecopy "^term-") (purecopy "^vc-")
142 (purecopy "^widget-") (purecopy "^custom-") (purecopy "^vm-"))
143 "*List of faces not to include in the Face menu.
144 Each element may be either a symbol, which is the name of a face, or a string,
145 which is a regular expression to be matched against face names. Matching
146 faces will not be added to the menu.
148 You can set this list before loading facemenu.el, or add a face to it before
149 creating that face if you do not want it to be listed. If you change the
150 variable so as to eliminate faces that have already been added to the menu,
151 call `facemenu-update' to recalculate the menu contents.
153 If this variable is t, no faces will be added to the menu. This is useful for
154 temporarily turning off the feature that automatically adds faces to the menu
155 when they are created."
156 :type
'(choice (const :tag
"Don't add" t
)
157 (const :tag
"None" nil
)
158 (repeat (choice symbol regexp
)))
162 (defvar facemenu-face-menu
163 (let ((map (make-sparse-keymap "Face")))
164 (define-key map
"o" (cons "Other..." 'facemenu-set-face
))
166 "Menu keymap for faces.")
168 (defalias 'facemenu-face-menu facemenu-face-menu
)
171 (defvar facemenu-foreground-menu
172 (let ((map (make-sparse-keymap "Foreground Color")))
173 (define-key map
"o" (cons "Other..." 'facemenu-set-foreground
))
175 "Menu keymap for foreground colors.")
177 (defalias 'facemenu-foreground-menu facemenu-foreground-menu
)
180 (defvar facemenu-background-menu
181 (let ((map (make-sparse-keymap "Background Color")))
182 (define-key map
"o" (cons "Other..." 'facemenu-set-background
))
184 "Menu keymap for background colors")
186 (defalias 'facemenu-background-menu facemenu-background-menu
)
189 (defvar facemenu-special-menu
190 (let ((map (make-sparse-keymap "Special")))
191 (define-key map
[?s
] (cons (purecopy "Remove Special")
192 'facemenu-remove-special
))
193 (define-key map
[?t
] (cons (purecopy "Intangible")
194 'facemenu-set-intangible
))
195 (define-key map
[?v
] (cons (purecopy "Invisible")
196 'facemenu-set-invisible
))
197 (define-key map
[?r
] (cons (purecopy "Read-Only")
198 'facemenu-set-read-only
))
200 "Menu keymap for non-face text-properties.")
202 (defalias 'facemenu-special-menu facemenu-special-menu
)
205 (defvar facemenu-justification-menu
206 (let ((map (make-sparse-keymap "Justification")))
207 (define-key map
[?c
] (cons (purecopy "Center") 'set-justification-center
))
208 (define-key map
[?b
] (cons (purecopy "Full") 'set-justification-full
))
209 (define-key map
[?r
] (cons (purecopy "Right") 'set-justification-right
))
210 (define-key map
[?l
] (cons (purecopy "Left") 'set-justification-left
))
211 (define-key map
[?u
] (cons (purecopy "Unfilled") 'set-justification-none
))
213 "Submenu for text justification commands.")
215 (defalias 'facemenu-justification-menu facemenu-justification-menu
)
218 (defvar facemenu-indentation-menu
219 (let ((map (make-sparse-keymap "Indentation")))
220 (define-key map
[decrease-right-margin
]
221 (cons (purecopy "Indent Right Less") 'decrease-right-margin
))
222 (define-key map
[increase-right-margin
]
223 (cons (purecopy "Indent Right More") 'increase-right-margin
))
224 (define-key map
[decrease-left-margin
]
225 (cons (purecopy "Indent Less") 'decrease-left-margin
))
226 (define-key map
[increase-left-margin
]
227 (cons (purecopy "Indent More") 'increase-left-margin
))
229 "Submenu for indentation commands.")
231 (defalias 'facemenu-indentation-menu facemenu-indentation-menu
)
233 ;; This is split up to avoid an overlong line in loaddefs.el.
235 (defvar facemenu-menu nil
236 "Facemenu top-level menu keymap.")
238 (setq facemenu-menu
(make-sparse-keymap "Text Properties"))
240 (let ((map facemenu-menu
))
241 (define-key map
[dc] (cons (purecopy "Display Colors") 'list-colors-display))
242 (define-key map [df] (cons (purecopy "Display Faces") 'list-faces-display))
243 (define-key map [dp] (cons (purecopy "List Properties")
244 'list-text-properties-at))
245 (define-key map [ra] (cons (purecopy "Remove Text Properties")
246 'facemenu-remove-all))
247 (define-key map [rm] (cons (purecopy "Remove Face Properties")
248 'facemenu-remove-face-props))
249 (define-key map [s1] (list (purecopy "--"))))
251 (let ((map facemenu-menu))
252 (define-key map [in] (cons (purecopy "Indentation")
253 'facemenu-indentation-menu))
254 (define-key map [ju] (cons (purecopy "Justification")
255 'facemenu-justification-menu))
256 (define-key map [s2] (list (purecopy "--")))
257 (define-key map [sp] (cons (purecopy "Special Properties")
258 'facemenu-special-menu))
259 (define-key map [bg] (cons (purecopy "Background Color")
260 'facemenu-background-menu))
261 (define-key map [fg] (cons (purecopy "Foreground Color")
262 'facemenu-foreground-menu))
263 (define-key map [fc] (cons (purecopy "Face")
264 'facemenu-face-menu)))
266 (defalias 'facemenu-menu facemenu-menu)
268 (defvar facemenu-keymap
269 (let ((map (make-sparse-keymap "Set face")))
270 (define-key map "o" (cons (purecopy "Other...") 'facemenu-set-face))
272 "Keymap for face-changing commands.
273 `Facemenu-update' fills in the keymap according to the bindings
274 requested in `facemenu-keybindings'.")
275 (defalias 'facemenu-keymap facemenu-keymap)
278 (defcustom facemenu-add-face-function nil
279 "Function called at beginning of text to change or `nil'.
280 This function is passed the FACE to set and END of text to change, and must
281 return a string which is inserted. It may set `facemenu-end-add-face'."
282 :type '(choice (const :tag "None" nil)
286 (defcustom facemenu-end-add-face nil
287 "String to insert or function called at end of text to change or `nil'.
288 This function is passed the FACE to set, and must return a string which is
290 :type '(choice (const :tag "None" nil)
295 (defcustom facemenu-remove-face-function nil
296 "When non-nil, this is a function called to remove faces.
297 This function is passed the START and END of text to change.
298 May also be `t' meaning to use `facemenu-add-face-function'."
299 :type '(choice (const :tag "None" nil)
300 (const :tag "Use add-face" t)
304 ;;; Internal Variables
306 (defvar facemenu-color-alist nil
307 ;; Don't initialize here; that doesn't work if preloaded.
308 "Alist of colors, used for completion.
309 If null, `facemenu-read-color' will set it.")
311 (defun facemenu-update ()
312 "Add or update the \"Face\" menu in the menu bar.
313 You can call this to update things if you change any of the menu configuration
317 ;; Add each defined face to the menu.
318 (facemenu-iterate 'facemenu-add-new-face
319 (facemenu-complete-face-list facemenu-keybindings)))
322 (defun facemenu-set-face (face &optional start end)
323 "Add FACE to the region or next character typed.
324 It will be added to the top of the face list; any faces lower on the list that
325 will not show through at all will be removed.
327 Interactively, the face to be used is read with the minibuffer.
329 If the region is active and there is no prefix argument,
330 this command sets the region to the requested face.
332 Otherwise, this command specifies the face for the next character
333 inserted. Moving point or switching buffers before
334 typing a character to insert cancels the specification."
335 (interactive (list (read-face-name "Use face ")))
336 (barf-if-buffer-read-only)
337 (facemenu-add-new-face face)
338 (if (and mark-active (not current-prefix-arg))
339 (let ((start (or start (region-beginning)))
340 (end (or end (region-end))))
341 (facemenu-add-face face start end))
342 (facemenu-add-face face)))
345 (defun facemenu-set-foreground (color &optional start end)
346 "Set the foreground color of the region or next character typed.
347 The color is prompted for. A face named `fg:color' is used \(or created).
348 If the region is active, it will be set to the requested face. If
349 it is inactive \(even if mark-even-if-inactive is set) the next
350 character that is typed \(via `self-insert-command') will be set to
351 the selected face. Moving point or switching buffers before
352 typing a character cancels the request."
353 (interactive (list (facemenu-read-color "Foreground color: ")))
354 (let ((face (intern (concat "fg:" color))))
355 (or (facemenu-get-face face)
356 (error "Unknown color: %s" color))
357 (facemenu-set-face face start end)))
360 (defun facemenu-set-background (color &optional start end)
361 "Set the background color of the region or next character typed.
362 The color is prompted for. A face named `bg:color' is used \(or created).
363 If the region is active, it will be set to the requested face. If
364 it is inactive \(even if mark-even-if-inactive is set) the next
365 character that is typed \(via `self-insert-command') will be set to
366 the selected face. Moving point or switching buffers before
367 typing a character cancels the request."
368 (interactive (list (facemenu-read-color "Background color: ")))
369 (let ((face (intern (concat "bg:" color))))
370 (or (facemenu-get-face face)
371 (error "Unknown color: %s" color))
372 (facemenu-set-face face start end)))
375 (defun facemenu-set-face-from-menu (face start end)
376 "Set the face of the region or next character typed.
377 This function is designed to be called from a menu; the face to use
378 is the menu item's name.
380 If the region is active and there is no prefix argument,
381 this command sets the region to the requested face.
383 Otherwise, this command specifies the face for the next character
384 inserted. Moving point or switching buffers before
385 typing a character to insert cancels the specification."
386 (interactive (list last-command-event
387 (if (and mark-active (not current-prefix-arg))
389 (if (and mark-active (not current-prefix-arg))
391 (barf-if-buffer-read-only)
392 (facemenu-get-face face)
394 (facemenu-add-face face start end)
395 (facemenu-add-face face)))
398 (defun facemenu-set-invisible (start end)
399 "Make the region invisible.
400 This sets the `invisible' text property; it can be undone with
401 `facemenu-remove-special'."
403 (add-text-properties start end '(invisible t)))
406 (defun facemenu-set-intangible (start end)
407 "Make the region intangible: disallow moving into it.
408 This sets the `intangible' text property; it can be undone with
409 `facemenu-remove-special'."
411 (add-text-properties start end '(intangible t)))
414 (defun facemenu-set-read-only (start end)
415 "Make the region unmodifiable.
416 This sets the `read-only' text property; it can be undone with
417 `facemenu-remove-special'."
419 (add-text-properties start end '(read-only t)))
422 (defun facemenu-remove-face-props (start end)
423 "Remove `face' and `mouse-face' text properties."
424 (interactive "*r") ; error if buffer is read-only despite the next line.
425 (let ((inhibit-read-only t))
426 (remove-text-properties
427 start end '(face nil mouse-face nil))))
430 (defun facemenu-remove-all (start end)
431 "Remove all text properties from the region."
432 (interactive "*r") ; error if buffer is read-only despite the next line.
433 (let ((inhibit-read-only t))
434 (set-text-properties start end nil)))
437 (defun facemenu-remove-special (start end)
438 "Remove all the \"special\" text properties from the region.
439 These special properties include `invisible', `intangible' and `read-only'."
440 (interactive "*r") ; error if buffer is read-only despite the next line.
441 (let ((inhibit-read-only t))
442 (remove-text-properties
443 start end '(invisible nil intangible nil read-only nil))))
446 (defun list-text-properties-at (p)
447 "Pop up a buffer listing text-properties at LOCATION."
449 (let ((props (text-properties-at p))
454 (if (and (not (cdr (cdr props)))
455 (not (eq (car props) 'category))
456 (< (length (setq str (format "Text property at %d: %s %S"
457 p (car props) (car (cdr props)))))
460 (with-output-to-temp-buffer "*Text Properties*"
461 (princ (format "Text properties at %d:\n\n" p))
462 (setq help-xref-stack nil)
464 (if (eq (car props) 'category)
465 (setq category (car (cdr props))))
466 (princ (format "%-20s %S\n"
467 (car props) (car (cdr props))))
468 (setq props (cdr (cdr props))))
471 (setq props (symbol-plist category))
472 (princ (format "\nCategory %s:\n\n" category))
474 (princ (format "%-20s %S\n"
475 (car props) (car (cdr props))))
476 (if (eq (car props) 'category)
477 (setq category (car (cdr props))))
478 (setq props (cdr (cdr props)))))))))))
481 (defun facemenu-read-color (&optional prompt)
482 "Read a color using the minibuffer."
483 (let ((col (completing-read (or prompt "Color: ")
484 (or facemenu-color-alist
485 (mapcar 'list (defined-colors)))
492 (defun list-colors-display (&optional list)
493 "Display names of defined colors, and show what they look like.
494 If the optional argument LIST is non-nil, it should be a list of
495 colors to display. Otherwise, this command computes a list
496 of colors that the current display can handle."
499 (setq list (defined-colors))
500 ;; Delete duplicate colors.
503 (if (facemenu-color-equal (car l) (car (cdr l)))
504 (setcdr l (cdr (cdr l)))
506 (with-output-to-temp-buffer "*Colors*"
508 (set-buffer standard-output)
514 (put-text-property s (point) 'face
515 (cons 'background-color (car list)))
517 (insert " " (car list) "\n")
518 (put-text-property s (point) 'face
519 (cons 'foreground-color (car list)))
520 (setq list (cdr list)))))))
522 (defun facemenu-color-equal (a b)
523 "Return t if colors A and B are the same color.
524 A and B should be strings naming colors.
525 This function queries the display system to find out what the color
526 names mean. It returns nil if the colors differ or if it can't
527 determine the correct answer."
528 (cond ((equal a b) t)
529 ((equal (color-values a) (color-values b)))))
531 (defun facemenu-add-face (face &optional start end)
532 "Add FACE to text between START and END.
533 If START is `nil' or START to END is empty, add FACE to next typed character
534 instead. For each section of that region that has a different face property,
535 FACE will be consed onto it, and other faces that are completely hidden by
536 that will be removed from the list.
537 If `facemenu-add-face-function' and maybe `facemenu-end-add-face' are non-`nil'
538 they are used to set the face information.
540 As a special case, if FACE is `default', then the region is left with NO face
541 text property. Otherwise, selecting the default face would not have any
542 effect. See `facemenu-remove-face-function'."
543 (interactive "*xFace: \nr")
544 (if (and (eq face 'default)
545 (not (eq facemenu-remove-face-function t)))
546 (if facemenu-remove-face-function
547 (funcall facemenu-remove-face-function start end)
548 (if (and start (< start end))
549 (remove-text-properties start end '(face default))
550 (setq self-insert-face 'default
551 self-insert-face-command this-command)))
552 (if facemenu-add-face-function
554 (if end (goto-char end))
556 (if start (goto-char start))
557 (insert-before-markers
558 (funcall facemenu-add-face-function face end)))
559 (if facemenu-end-add-face
560 (insert (if (stringp facemenu-end-add-face)
561 facemenu-end-add-face
562 (funcall facemenu-end-add-face face)))))
563 (if (and start (< start end))
564 (let ((part-start start) part-end)
565 (while (not (= part-start end))
566 (setq part-end (next-single-property-change part-start 'face
568 (let ((prev (get-text-property part-start 'face)))
569 (put-text-property part-start part-end 'face
572 (facemenu-active-faces
577 (setq part-start part-end)))
578 (setq self-insert-face (if (eq last-command self-insert-face-command)
579 (cons face (if (listp self-insert-face)
581 (list self-insert-face)))
583 self-insert-face-command this-command)))))
585 (defun facemenu-active-faces (face-list &optional frame)
586 "Return from FACE-LIST those faces that would be used for display.
587 This means each face attribute is not specified in a face earlier in FACE-LIST
588 and such a face is therefore active when used to display text.
589 If the optional argument FRAME is given, use the faces in that frame; otherwise
590 use the selected frame. If t, then the global, non-frame faces are used."
591 (let* ((mask-atts (copy-sequence (internal-get-face (car face-list) frame)))
592 (active-list (list (car face-list)))
593 (face-list (cdr face-list))
594 (mask-len (length mask-atts)))
596 (if (let ((face-atts (internal-get-face (car face-list) frame))
597 (i mask-len) (useful nil))
598 (while (> (setq i (1- i)) 1)
599 (and (aref face-atts i) (not (aref mask-atts i))
600 (aset mask-atts i (setq useful t))))
602 (setq active-list (cons (car face-list) active-list)))
603 (setq face-list (cdr face-list)))
604 (nreverse active-list)))
606 (defun facemenu-get-face (symbol)
607 "Make sure FACE exists.
608 If not, create it and add it to the appropriate menu. Return the symbol.
610 If a window system is in use, and this function creates a face named
611 `fg:color', then it sets the foreground to that color. Likewise, `bg:color'
612 means to set the background. In either case, if the color is undefined,
613 no color is set and a warning is issued."
614 (let ((name (symbol-name symbol))
616 (cond ((internal-find-face symbol))
617 ((and (display-color-p)
618 (or (setq foreground (string-match "^fg:" name))
619 (string-match "^bg:" name)))
620 (let ((face (make-face symbol))
621 (color (substring name 3)))
622 (if (x-color-defined-p color)
624 (set-face-foreground face color)
625 (set-face-background face color))
626 (message "Color \"%s\" undefined" color))))
627 (t (make-face symbol))))
630 (defun facemenu-add-new-face (face)
631 "Add a FACE to the appropriate Face menu.
632 Automatically called when a new face is created."
633 (let* ((name (symbol-name face))
635 (key (cdr (assoc face facemenu-keybindings)))
637 (cond ((string-match "^fg:" name)
638 (setq name (substring name 3))
640 (format "Select foreground color %s for subsequent insertion."
642 (setq menu 'facemenu-foreground-menu))
643 ((string-match "^bg:" name)
644 (setq name (substring name 3))
646 (format "Select background color %s for subsequent insertion."
648 (setq menu 'facemenu-background-menu))
651 (format "Select face `%s' for subsequent insertion."
653 (setq menu 'facemenu-face-menu)))
654 (cond ((eq t facemenu-unlisted-faces))
655 ((memq face facemenu-unlisted-faces))
656 ;; test against regexps in facemenu-unlisted-faces
657 ((let ((unlisted facemenu-unlisted-faces)
659 (while (and unlisted (not matched))
660 (if (and (stringp (car unlisted))
661 (string-match (car unlisted) name))
663 (setq unlisted (cdr unlisted))))
665 (key ; has a keyboard equivalent. These go at the front.
666 (setq function (intern (concat "facemenu-set-" name)))
671 (facemenu-set-face (quote ,face))))
672 (define-key 'facemenu-keymap key (cons name function))
673 (define-key menu key (cons name function)))
674 ((facemenu-iterate ; check if equivalent face is already in the menu
675 (lambda (m) (and (listp m)
677 (face-equal (car m) face)))
678 (cdr (symbol-function menu))))
679 (t ; No keyboard equivalent. Figure out where to put it:
680 (setq key (vector face)
681 function 'facemenu-set-face-from-menu
682 menu-val (symbol-function menu))
683 (if (and facemenu-new-faces-at-end
684 (> (length menu-val) 3))
685 (define-key-after menu-val key (cons name function)
686 (car (nth (- (length menu-val) 3) menu-val)))
687 (define-key menu key (cons name function))))))
688 nil) ; Return nil for facemenu-iterate
690 (defun facemenu-complete-face-list (&optional oldlist)
691 "Return list of all faces that look different.
692 Starts with given ALIST of faces, and adds elements only if they display
693 differently from any face already on the list.
694 The faces on ALIST will end up at the end of the returned list, in reverse
696 (let ((list (nreverse (mapcar 'car oldlist))))
699 (if (not (memq new-face list))
700 (setq list (cons new-face list)))
702 (nreverse (face-list)))
705 (defun facemenu-iterate (func iterate-list)
706 "Apply FUNC to each element of LIST until one returns non-nil.
707 Returns the non-nil value it found, or nil if all were nil."
708 (while (and iterate-list (not (funcall func (car iterate-list))))
709 (setq iterate-list (cdr iterate-list)))
714 ;;; facemenu.el ends here