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be010748 | 1 | ;;; enriched.el --- read and save files in text/enriched format |
b578f267 | 2 | |
312cac0e | 3 | ;; Copyright (c) 1994, 1995, 1996 Free Software Foundation, Inc. |
0122281a | 4 | |
5762abec | 5 | ;; Author: Boris Goldowsky <boris@gnu.org> |
0122281a BG |
6 | ;; Keywords: wp, faces |
7 | ||
8 | ;; This file is part of GNU Emacs. | |
9 | ||
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. | |
b578f267 | 14 | |
0122281a BG |
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. | |
b578f267 | 19 | |
0122281a | 20 | ;; You should have received a copy of the GNU General Public License |
b578f267 EN |
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. | |
0122281a BG |
24 | |
25 | ;;; Commentary: | |
b578f267 | 26 | |
0122281a | 27 | ;; This file implements reading, editing, and saving files with |
b578f267 EN |
28 | ;; text-properties such as faces, levels of indentation, and true line |
29 | ;; breaks distinguished from newlines just used to fit text into the window. | |
30 | ||
0122281a | 31 | ;; The file format used is the MIME text/enriched format, which is a |
b578f267 EN |
32 | ;; standard format defined in internet RFC 1563. All standard annotations |
33 | ;; are supported except for <smaller> and <bigger>, which are currently not | |
0122281a | 34 | ;; possible to display. |
b578f267 | 35 | |
0122281a | 36 | ;; A separate file, enriched.doc, contains further documentation and other |
b578f267 EN |
37 | ;; important information about this code. It also serves as an example |
38 | ;; file in text/enriched format. It should be in the etc directory of your | |
39 | ;; emacs distribution. | |
40 | ||
41 | ;;; Code: | |
0122281a BG |
42 | |
43 | (provide 'enriched) | |
0122281a BG |
44 | |
45 | ;;; | |
46 | ;;; Variables controlling the display | |
47 | ;;; | |
48 | ||
20f0de75 RS |
49 | (defgroup enriched nil |
50 | "Read and save files in text/enriched format" | |
51 | :group 'wp) | |
52 | ||
53 | (defcustom enriched-verbose t | |
54 | "*If non-nil, give status messages when reading and writing files." | |
55 | :type 'boolean | |
56 | :group 'enriched) | |
0122281a | 57 | |
0122281a BG |
58 | ;;; |
59 | ;;; Set up faces & display table | |
60 | ;;; | |
61 | ||
8d86541f RS |
62 | ;; Emacs doesn't have a "fixed" face by default, since all faces currently |
63 | ;; have to be fixed-width. So we just pick one that looks different from the | |
64 | ;; default. | |
65 | (defface fixed | |
66 | '((t (:bold t))) | |
67 | "Face used for text that must be shown in fixed width. | |
68 | Currently, emacs can only display fixed-width fonts, but this may change. | |
69 | This face is used for text specifically marked as fixed-width, for example | |
70 | in text/enriched files." | |
71 | :group 'enriched) | |
72 | ||
73 | (defface excerpt | |
74 | '((t (:italic t))) | |
75 | "Face used for text that is an excerpt from another document. | |
76 | This is used in enriched-mode for text explicitly marked as an excerpt." | |
77 | :group 'enriched) | |
0122281a | 78 | |
b2f51b24 BG |
79 | (defconst enriched-display-table (or (copy-sequence standard-display-table) |
80 | (make-display-table))) | |
0122281a BG |
81 | (aset enriched-display-table ?\f (make-vector (1- (frame-width)) ?-)) |
82 | ||
b2f51b24 | 83 | (defconst enriched-par-props '(left-margin right-margin justification) |
0122281a BG |
84 | "Text-properties that usually apply to whole paragraphs. |
85 | These are set front-sticky everywhere except at hard newlines.") | |
86 | ||
87 | ;;; | |
88 | ;;; Variables controlling the file format | |
89 | ;;; (bidirectional) | |
90 | ||
b2f51b24 | 91 | (defconst enriched-initial-annotation |
0122281a | 92 | (lambda () |
b2f51b24 | 93 | (format "Content-Type: text/enriched\nText-Width: %d\n\n" |
8b914003 | 94 | fill-column)) |
0122281a BG |
95 | "What to insert at the start of a text/enriched file. |
96 | If this is a string, it is inserted. If it is a list, it should be a lambda | |
97 | expression, which is evaluated to get the string to insert.") | |
98 | ||
b2f51b24 | 99 | (defconst enriched-annotation-format "<%s%s>" |
0122281a BG |
100 | "General format of enriched-text annotations.") |
101 | ||
b2f51b24 | 102 | (defconst enriched-annotation-regexp "<\\(/\\)?\\([-A-za-z0-9]+\\)>" |
0122281a BG |
103 | "Regular expression matching enriched-text annotations.") |
104 | ||
b2f51b24 | 105 | (defconst enriched-translations |
0122281a BG |
106 | '((face (bold-italic "bold" "italic") |
107 | (bold "bold") | |
108 | (italic "italic") | |
109 | (underline "underline") | |
110 | (fixed "fixed") | |
111 | (excerpt "excerpt") | |
112 | (default ) | |
113 | (nil enriched-encode-other-face)) | |
0122281a BG |
114 | (left-margin (4 "indent")) |
115 | (right-margin (4 "indentright")) | |
116 | (justification (none "nofill") | |
117 | (right "flushright") | |
118 | (left "flushleft") | |
5f329f43 | 119 | (full "flushboth") |
0122281a BG |
120 | (center "center")) |
121 | (PARAMETER (t "param")) ; Argument of preceding annotation | |
122 | ;; The following are not part of the standard: | |
123 | (FUNCTION (enriched-decode-foreground "x-color") | |
d9e28c1c GM |
124 | (enriched-decode-background "x-bg-color") |
125 | (enriched-decode-display-prop "x-display")) | |
0122281a | 126 | (read-only (t "x-read-only")) |
d9e28c1c | 127 | (display (nil enriched-handle-display-prop)) |
b2f51b24 | 128 | (unknown (nil format-annotate-value)) |
0122281a BG |
129 | ; (font-size (2 "bigger") ; unimplemented |
130 | ; (-2 "smaller")) | |
131 | ) | |
132 | "List of definitions of text/enriched annotations. | |
b2f51b24 BG |
133 | See `format-annotate-region' and `format-deannotate-region' for the definition |
134 | of this structure.") | |
0122281a | 135 | |
b2f51b24 BG |
136 | (defconst enriched-ignore |
137 | '(front-sticky rear-nonsticky hard) | |
138 | "Properties that are OK to ignore when saving text/enriched files. | |
139 | Any property that is neither on this list nor dealt with by | |
140 | `enriched-translations' will generate a warning.") | |
0122281a BG |
141 | |
142 | ;;; Internal variables | |
143 | ||
144 | (defvar enriched-mode nil | |
2806002f | 145 | "True if Enriched mode is in use.") |
0122281a | 146 | (make-variable-buffer-local 'enriched-mode) |
0a3e74ce | 147 | (put 'enriched-mode 'permanent-local t) |
0122281a BG |
148 | |
149 | (if (not (assq 'enriched-mode minor-mode-alist)) | |
150 | (setq minor-mode-alist | |
151 | (cons '(enriched-mode " Enriched") | |
152 | minor-mode-alist))) | |
153 | ||
20f0de75 | 154 | (defcustom enriched-mode-hook nil |
2806002f | 155 | "Functions to run when entering Enriched mode. |
0122281a | 156 | If you set variables in this hook, you should arrange for them to be restored |
2806002f | 157 | to their old values if you leave Enriched mode. One way to do this is to add |
20f0de75 RS |
158 | them and their old values to `enriched-old-bindings'." |
159 | :type 'hook | |
160 | :group 'enriched) | |
0122281a BG |
161 | |
162 | (defvar enriched-old-bindings nil | |
163 | "Store old variable values that we change when entering mode. | |
164 | The value is a list of \(VAR VALUE VAR VALUE...).") | |
165 | (make-variable-buffer-local 'enriched-old-bindings) | |
166 | ||
0122281a BG |
167 | ;;; |
168 | ;;; Define the mode | |
169 | ;;; | |
170 | ||
60d15bc7 | 171 | ;;;###autoload |
b2f51b24 | 172 | (defun enriched-mode (&optional arg) |
0122281a BG |
173 | "Minor mode for editing text/enriched files. |
174 | These are files with embedded formatting information in the MIME standard | |
175 | text/enriched format. | |
2806002f | 176 | Turning the mode on runs `enriched-mode-hook'. |
0122281a | 177 | |
2806002f | 178 | More information about Enriched mode is available in the file |
0122281a BG |
179 | etc/enriched.doc in the Emacs distribution directory. |
180 | ||
181 | Commands: | |
182 | ||
183 | \\<enriched-mode-map>\\{enriched-mode-map}" | |
184 | (interactive "P") | |
185 | (let ((mod (buffer-modified-p))) | |
186 | (cond ((or (<= (prefix-numeric-value arg) 0) | |
187 | (and enriched-mode (null arg))) | |
188 | ;; Turn mode off | |
189 | (setq enriched-mode nil) | |
b2f51b24 | 190 | (setq buffer-file-format (delq 'text/enriched buffer-file-format)) |
0122281a BG |
191 | ;; restore old variable values |
192 | (while enriched-old-bindings | |
193 | (funcall 'set (car enriched-old-bindings) | |
194 | (car (cdr enriched-old-bindings))) | |
b2f51b24 | 195 | (setq enriched-old-bindings (cdr (cdr enriched-old-bindings))))) |
0122281a | 196 | |
b2f51b24 | 197 | (enriched-mode nil) ; Mode already on; do nothing. |
0122281a | 198 | |
b2f51b24 | 199 | (t (setq enriched-mode t) ; Turn mode on |
8b914003 | 200 | (add-to-list 'buffer-file-format 'text/enriched) |
b2f51b24 | 201 | ;; Save old variable values before we change them. |
2806002f | 202 | ;; These will be restored if we exit Enriched mode. |
b2f51b24 BG |
203 | (setq enriched-old-bindings |
204 | (list 'buffer-display-table buffer-display-table | |
205 | 'indent-line-function indent-line-function | |
ef6fe31b | 206 | 'default-text-properties default-text-properties)) |
b2f51b24 | 207 | (make-local-variable 'indent-line-function) |
ef6fe31b | 208 | (make-local-variable 'default-text-properties) |
b2f51b24 | 209 | (setq indent-line-function 'indent-to-left-margin |
8b914003 RS |
210 | buffer-display-table enriched-display-table) |
211 | (use-hard-newlines 1 nil) | |
ef6fe31b | 212 | (let ((sticky (plist-get default-text-properties 'front-sticky)) |
b2f51b24 BG |
213 | (p enriched-par-props)) |
214 | (while p | |
8b914003 | 215 | (add-to-list 'sticky (car p)) |
b2f51b24 BG |
216 | (setq p (cdr p))) |
217 | (if sticky | |
ef6fe31b BG |
218 | (setq default-text-properties |
219 | (plist-put default-text-properties | |
220 | 'front-sticky sticky)))) | |
2806002f | 221 | (run-hooks 'enriched-mode-hook))) |
0122281a BG |
222 | (set-buffer-modified-p mod) |
223 | (force-mode-line-update))) | |
224 | ||
225 | ;;; | |
226 | ;;; Keybindings | |
227 | ;;; | |
228 | ||
229 | (defvar enriched-mode-map nil | |
2806002f | 230 | "Keymap for Enriched mode.") |
0122281a BG |
231 | |
232 | (if (null enriched-mode-map) | |
233 | (fset 'enriched-mode-map (setq enriched-mode-map (make-sparse-keymap)))) | |
234 | ||
235 | (if (not (assq 'enriched-mode minor-mode-map-alist)) | |
236 | (setq minor-mode-map-alist | |
237 | (cons (cons 'enriched-mode enriched-mode-map) | |
238 | minor-mode-map-alist))) | |
239 | ||
b2f51b24 BG |
240 | (define-key enriched-mode-map "\C-a" 'beginning-of-line-text) |
241 | (define-key enriched-mode-map "\C-m" 'reindent-then-newline-and-indent) | |
242 | (define-key enriched-mode-map "\C-j" 'reindent-then-newline-and-indent) | |
243 | (define-key enriched-mode-map "\M-j" 'facemenu-justification-menu) | |
5f329f43 | 244 | (define-key enriched-mode-map "\M-S" 'set-justification-center) |
b2f51b24 | 245 | (define-key enriched-mode-map "\C-x\t" 'increase-left-margin) |
5f329f43 RS |
246 | (define-key enriched-mode-map "\C-c\C-l" 'set-left-margin) |
247 | (define-key enriched-mode-map "\C-c\C-r" 'set-right-margin) | |
0122281a BG |
248 | |
249 | ;;; | |
b2f51b24 | 250 | ;;; Some functions dealing with text-properties, especially indentation |
0122281a BG |
251 | ;;; |
252 | ||
0122281a BG |
253 | (defun enriched-map-property-regions (prop func &optional from to) |
254 | "Apply a function to regions of the buffer based on a text property. | |
255 | For each contiguous region of the buffer for which the value of PROPERTY is | |
256 | eq, the FUNCTION will be called. Optional arguments FROM and TO specify the | |
257 | region over which to scan. | |
258 | ||
259 | The specified function receives three arguments: the VALUE of the property in | |
260 | the region, and the START and END of each region." | |
261 | (save-excursion | |
262 | (save-restriction | |
263 | (if to (narrow-to-region (point-min) to)) | |
264 | (goto-char (or from (point-min))) | |
265 | (let ((begin (point)) | |
266 | end | |
267 | (marker (make-marker)) | |
268 | (val (get-text-property (point) prop))) | |
269 | (while (setq end (text-property-not-all begin (point-max) prop val)) | |
270 | (move-marker marker end) | |
271 | (funcall func val begin (marker-position marker)) | |
272 | (setq begin (marker-position marker) | |
273 | val (get-text-property marker prop))) | |
274 | (if (< begin (point-max)) | |
275 | (funcall func val begin (point-max))))))) | |
276 | ||
277 | (put 'enriched-map-property-regions 'lisp-indent-hook 1) | |
278 | ||
0122281a BG |
279 | (defun enriched-insert-indentation (&optional from to) |
280 | "Indent and justify each line in the region." | |
281 | (save-excursion | |
282 | (save-restriction | |
283 | (if to (narrow-to-region (point-min) to)) | |
284 | (goto-char (or from (point-min))) | |
285 | (if (not (bolp)) (forward-line 1)) | |
286 | (while (not (eobp)) | |
b2f51b24 BG |
287 | (if (eolp) |
288 | nil ; skip blank lines | |
289 | (indent-to (current-left-margin)) | |
290 | (justify-current-line t nil t)) | |
0122281a BG |
291 | (forward-line 1))))) |
292 | ||
0122281a | 293 | ;;; |
b2f51b24 | 294 | ;;; Encoding Files |
0122281a BG |
295 | ;;; |
296 | ||
b2f51b24 | 297 | ;;;###autoload |
8b914003 | 298 | (defun enriched-encode (from to orig-buf) |
0122281a | 299 | (if enriched-verbose (message "Enriched: encoding document...")) |
b2f51b24 BG |
300 | (save-restriction |
301 | (narrow-to-region from to) | |
302 | (delete-to-left-margin) | |
303 | (unjustify-region) | |
304 | (goto-char from) | |
305 | (format-replace-strings '(("<" . "<<"))) | |
306 | (format-insert-annotations | |
307 | (format-annotate-region from (point-max) enriched-translations | |
308 | 'enriched-make-annotation enriched-ignore)) | |
309 | (goto-char from) | |
310 | (insert (if (stringp enriched-initial-annotation) | |
311 | enriched-initial-annotation | |
8b914003 RS |
312 | (save-excursion |
313 | ;; Eval this in the buffer we are annotating. This | |
314 | ;; fixes a bug which was saving incorrect File-Width | |
315 | ;; information, since we were looking at local | |
316 | ;; variables in the wrong buffer. | |
317 | (if orig-buf (set-buffer orig-buf)) | |
318 | (funcall enriched-initial-annotation)))) | |
b2f51b24 BG |
319 | (enriched-map-property-regions 'hard |
320 | (lambda (v b e) | |
321 | (if (and v (= ?\n (char-after b))) | |
322 | (progn (goto-char b) (insert "\n")))) | |
323 | (point) nil) | |
324 | (if enriched-verbose (message nil)) | |
325 | ;; Return new end. | |
326 | (point-max))) | |
0122281a | 327 | |
b2f51b24 BG |
328 | (defun enriched-make-annotation (name positive) |
329 | "Format an annotation called NAME. | |
330 | If POSITIVE is non-nil, this is the opening annotation, if nil, this is the | |
331 | matching close." | |
332 | (cond ((stringp name) | |
333 | (format enriched-annotation-format (if positive "" "/") name)) | |
334 | ;; Otherwise it is an annotation with parameters, represented as a list | |
335 | (positive | |
336 | (let ((item (car name)) | |
337 | (params (cdr name))) | |
338 | (concat (format enriched-annotation-format "" item) | |
339 | (mapconcat (lambda (i) (concat "<param>" i "</param>")) | |
340 | params "")))) | |
341 | (t (format enriched-annotation-format "/" (car name))))) | |
0122281a | 342 | |
b2f51b24 BG |
343 | (defun enriched-encode-other-face (old new) |
344 | "Generate annotations for random face change. | |
345 | One annotation each for foreground color, background color, italic, etc." | |
346 | (cons (and old (enriched-face-ans old)) | |
347 | (and new (enriched-face-ans new)))) | |
348 | ||
349 | (defun enriched-face-ans (face) | |
350 | "Return annotations specifying FACE." | |
351 | (cond ((string-match "^fg:" (symbol-name face)) | |
352 | (list (list "x-color" (substring (symbol-name face) 3)))) | |
353 | ((string-match "^bg:" (symbol-name face)) | |
354 | (list (list "x-bg-color" (substring (symbol-name face) 3)))) | |
355 | ((let* ((fg (face-foreground face)) | |
356 | (bg (face-background face)) | |
357 | (props (face-font face t)) | |
358 | (ans (cdr (format-annotate-single-property-change | |
359 | 'face nil props enriched-translations)))) | |
360 | (if fg (setq ans (cons (list "x-color" fg) ans))) | |
361 | (if bg (setq ans (cons (list "x-bg-color" bg) ans))) | |
362 | ans)))) | |
0122281a BG |
363 | |
364 | ;;; | |
b2f51b24 | 365 | ;;; Decoding files |
0122281a BG |
366 | ;;; |
367 | ||
b2f51b24 BG |
368 | ;;;###autoload |
369 | (defun enriched-decode (from to) | |
0122281a | 370 | (if enriched-verbose (message "Enriched: decoding document...")) |
8b914003 | 371 | (use-hard-newlines 1 'never) |
0122281a BG |
372 | (save-excursion |
373 | (save-restriction | |
b2f51b24 BG |
374 | (narrow-to-region from to) |
375 | (goto-char from) | |
8b914003 RS |
376 | |
377 | ;; Deal with header | |
378 | (let ((file-width (enriched-get-file-width))) | |
b2f51b24 BG |
379 | (enriched-remove-header) |
380 | ||
381 | ;; Deal with newlines | |
b2f51b24 BG |
382 | (while (search-forward-regexp "\n\n+" nil t) |
383 | (if (current-justification) | |
384 | (delete-char -1)) | |
8b914003 | 385 | (set-hard-newline-properties (match-beginning 0) (point))) |
b2f51b24 BG |
386 | |
387 | ;; Translate annotations | |
388 | (format-deannotate-region from (point-max) enriched-translations | |
389 | 'enriched-next-annotation) | |
390 | ||
8b914003 RS |
391 | ;; Indent or fill the buffer |
392 | (cond (file-width ; File was filled to this width | |
393 | (setq fill-column file-width) | |
394 | (if enriched-verbose (message "Indenting...")) | |
395 | (enriched-insert-indentation)) | |
396 | (t ; File was not filled. | |
397 | (if enriched-verbose (message "Filling paragraphs...")) | |
398 | (fill-region (point-min) (point-max)))) | |
399 | (if enriched-verbose (message nil))) | |
b2f51b24 BG |
400 | (point-max)))) |
401 | ||
402 | (defun enriched-next-annotation () | |
403 | "Find and return next text/enriched annotation. | |
09291989 | 404 | Any \"<<\" strings encountered are converted to \"<\". |
b2f51b24 BG |
405 | Return value is \(begin end name positive-p), or nil if none was found." |
406 | (while (and (search-forward "<" nil 1) | |
407 | (progn (goto-char (match-beginning 0)) | |
408 | (not (looking-at enriched-annotation-regexp)))) | |
409 | (forward-char 1) | |
410 | (if (= ?< (char-after (point))) | |
411 | (delete-char 1) | |
412 | ;; A single < that does not start an annotation is an error, | |
413 | ;; which we note and then ignore. | |
a59d9084 KH |
414 | (message "Warning: malformed annotation in file at %s" |
415 | (1- (point))))) | |
b2f51b24 BG |
416 | (if (not (eobp)) |
417 | (let* ((beg (match-beginning 0)) | |
418 | (end (match-end 0)) | |
419 | (name (downcase (buffer-substring | |
420 | (match-beginning 2) (match-end 2)))) | |
421 | (pos (not (match-beginning 1)))) | |
422 | (list beg end name pos)))) | |
0122281a BG |
423 | |
424 | (defun enriched-get-file-width () | |
425 | "Look for file width information on this line." | |
426 | (save-excursion | |
b2f51b24 | 427 | (if (search-forward "Text-Width: " (+ (point) 1000) t) |
0122281a BG |
428 | (read (current-buffer))))) |
429 | ||
b2f51b24 BG |
430 | (defun enriched-remove-header () |
431 | "Remove file-format header at point." | |
432 | (while (looking-at "^[-A-Za-z]+: .*\n") | |
433 | (delete-region (point) (match-end 0))) | |
434 | (if (looking-at "^\n") | |
435 | (delete-char 1))) | |
436 | ||
7ddb5524 | 437 | (defun enriched-decode-foreground (from to &optional color) |
b2f51b24 | 438 | (let ((face (intern (concat "fg:" color)))) |
7ddb5524 RS |
439 | (cond ((null color) |
440 | (message "Warning: no color specified for <x-color>")) | |
441 | ((internal-find-face face)) | |
b2f51b24 | 442 | ((and window-system (facemenu-get-face face))) |
b2f51b24 | 443 | ((make-face face) |
7ddb5524 | 444 | (message "Warning: color `%s' can't be displayed" color))) |
b2f51b24 BG |
445 | (list from to 'face face))) |
446 | ||
7ddb5524 | 447 | (defun enriched-decode-background (from to &optional color) |
b2f51b24 | 448 | (let ((face (intern (concat "bg:" color)))) |
7ddb5524 RS |
449 | (cond ((null color) |
450 | (message "Warning: no color specified for <x-bg-color>")) | |
451 | ((internal-find-face face)) | |
b2f51b24 | 452 | ((and window-system (facemenu-get-face face))) |
b2f51b24 | 453 | ((make-face face) |
7ddb5524 | 454 | (message "Warning: color `%s' can't be displayed" color))) |
b2f51b24 | 455 | (list from to 'face face))) |
0122281a | 456 | |
d9e28c1c GM |
457 | |
458 | \f | |
459 | ;;; Handling the `display' property. | |
460 | ||
461 | ||
462 | (defun enriched-handle-display-prop (old new) | |
463 | "Return a list of annotations for a change in the `display' property. | |
464 | OLD is the old value of the property, NEW is the new value. Value | |
465 | is a list `(CLOSE OPEN)', where CLOSE is a list of annotations to | |
466 | close and OPEN a list of annotations to open. Each of these lists | |
467 | has the form `(ANNOTATION PARAM ...)'." | |
468 | (let ((annotation "x-display") | |
469 | (param (prin1-to-string (or old new))) | |
470 | close open) | |
471 | (if (null old) | |
472 | (list nil (list annotation param)) | |
473 | (list (list annotation param))))) | |
474 | ||
475 | ||
476 | (defun enriched-decode-display-prop (start end &optional param) | |
477 | "Decode a `display' property for text between START and END. | |
478 | PARAM is a `<param>' found for the property. | |
479 | Value is a list `(START END SYMBOL VALUE)' with START and END denoting | |
480 | the range of text to assign text property SYMBOL with value VALUE " | |
481 | (let ((prop (when (stringp param) | |
482 | (condition-case () | |
483 | (car (read-from-string param)) | |
484 | (error nil))))) | |
485 | (unless prop | |
486 | (message "Warning: invalid <x-display> parameter %s" param)) | |
487 | (list start end 'display prop))) | |
488 | ||
489 | ||
0122281a | 490 | ;;; enriched.el ends here |