1 ;;; gnus-spec.el --- format spec functions for Gnus
2 ;; Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
3 ;; Free Software Foundation, Inc.
5 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
6 ;; Katsumi Yamaoka <yamaoka@jpl.org>
9 ;; This file is part of GNU Emacs.
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)
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.
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.
30 (eval-when-compile (require 'cl))
35 (defcustom gnus-use-correct-string-widths t
36 "*If non-nil, use correct functions for dealing with wide characters."
40 (defcustom gnus-make-format-preserve-properties (featurep 'xemacs)
41 "*If non-nil, use a replacement `format' function which preserves
42 text properties. This is only needed on XEmacs, as FSF Emacs does this anyway."
46 ;;; Internal variables.
48 (defvar gnus-summary-mark-positions nil)
49 (defvar gnus-group-mark-positions nil)
50 (defvar gnus-group-indentation "")
52 ;; Format specs. The chunks below are the machine-generated forms
53 ;; that are to be evaled as the result of the default format strings.
54 ;; We write them in here to get them byte-compiled. That way the
55 ;; default actions will be quite fast, while still retaining the full
56 ;; flexibility of the user-defined format specs.
58 ;; First we have lots of dummy defvars to let the compiler know these
59 ;; are really dynamic variables.
61 (defvar gnus-tmp-unread)
62 (defvar gnus-tmp-replied)
63 (defvar gnus-tmp-score-char)
64 (defvar gnus-tmp-indentation)
65 (defvar gnus-tmp-opening-bracket)
66 (defvar gnus-tmp-lines)
67 (defvar gnus-tmp-name)
68 (defvar gnus-tmp-closing-bracket)
69 (defvar gnus-tmp-subject-or-nil)
70 (defvar gnus-tmp-subject)
71 (defvar gnus-tmp-marked)
72 (defvar gnus-tmp-marked-mark)
73 (defvar gnus-tmp-subscribed)
74 (defvar gnus-tmp-process-marked)
75 (defvar gnus-tmp-number-of-unread)
76 (defvar gnus-tmp-group-name)
77 (defvar gnus-tmp-group)
78 (defvar gnus-tmp-article-number)
79 (defvar gnus-tmp-unread-and-unselected)
80 (defvar gnus-tmp-news-method)
81 (defvar gnus-tmp-news-server)
82 (defvar gnus-tmp-article-number)
83 (defvar gnus-mouse-face)
84 (defvar gnus-mouse-face-prop)
85 (defvar gnus-tmp-header)
86 (defvar gnus-tmp-from)
88 (defun gnus-summary-line-format-spec ()
89 (insert gnus-tmp-unread gnus-tmp-replied
90 gnus-tmp-score-char gnus-tmp-indentation)
91 (gnus-put-text-property
95 (format "%c%4s: %-23s%c" gnus-tmp-opening-bracket gnus-tmp-lines
98 (gnus-summary-from-or-to-or-newsgroups
99 gnus-tmp-header gnus-tmp-from))))
100 (if (> (length val) 23)
103 gnus-tmp-closing-bracket))
105 gnus-mouse-face-prop gnus-mouse-face)
106 (insert " " gnus-tmp-subject-or-nil "\n"))
108 (defvar gnus-summary-line-format-spec
109 (gnus-byte-code 'gnus-summary-line-format-spec))
111 (defun gnus-summary-dummy-line-format-spec ()
113 (gnus-put-text-property
118 gnus-mouse-face-prop gnus-mouse-face)
119 (insert " " gnus-tmp-subject "\n"))
121 (defvar gnus-summary-dummy-line-format-spec
122 (gnus-byte-code 'gnus-summary-dummy-line-format-spec))
124 (defun gnus-group-line-format-spec ()
125 (insert gnus-tmp-marked-mark gnus-tmp-subscribed
126 gnus-tmp-process-marked
127 gnus-group-indentation
128 (format "%5s: " gnus-tmp-number-of-unread))
129 (gnus-put-text-property
132 (insert gnus-tmp-group "\n")
134 gnus-mouse-face-prop gnus-mouse-face))
135 (defvar gnus-group-line-format-spec
136 (gnus-byte-code 'gnus-group-line-format-spec))
138 (defvar gnus-format-specs
139 `((group ("%M\%S\%p\%P\%5y: %(%g%)\n" ,gnus-group-line-format-spec))
140 (summary-dummy ("* %(: :%) %S\n"
141 ,gnus-summary-dummy-line-format-spec))
142 (summary ("%U%R%z%I%(%[%4L: %-23,23f%]%) %s\n"
143 ,gnus-summary-line-format-spec)))
144 "Alist of format specs.")
146 (defvar gnus-default-format-specs gnus-format-specs)
148 (defvar gnus-format-specs-compiled nil
149 "Alist of compiled format specs. Each element should be the form:
150 \(TYPE (FORMAT-STRING-1 . COMPILED-FUNCTION-1)
152 (FORMAT-STRING-n . COMPILED-FUNCTION-n)).")
154 (defvar gnus-article-mode-line-format-spec nil)
155 (defvar gnus-summary-mode-line-format-spec nil)
156 (defvar gnus-group-mode-line-format-spec nil)
158 ;;; Phew. All that gruft is over with, fortunately.
161 (defun gnus-update-format (var)
162 "Update the format specification near point."
167 ;; Find the end of the current word.
168 (re-search-forward "[ \t\n]" nil t)
170 (when (re-search-backward "\\(gnus-[-a-z]+-line-format\\)" nil t)
172 (let* ((type (intern (progn (string-match "gnus-\\([-a-z]+\\)-line" var)
173 (match-string 1 var))))
174 (value (symbol-value (intern var)))
176 (intern (format "%s-spec" var))
178 value (symbol-value (intern (format "%s-alist" var)))
179 (not (string-match "mode" var)))))
180 (entry (assq type gnus-format-specs)))
182 (let ((elem (assoc value entry)))
185 (setcdr entry (cons (cons value elem) (cdr entry)))))
186 (push (list type (cons value spec)) gnus-format-specs))
187 (gnus-product-variable-touch 'gnus-format-specs)
189 (pop-to-buffer "*Gnus Format*")
191 (lisp-interaction-mode)
192 (insert (pp-to-string spec))))
194 (put 'gnus-search-or-regist-spec 'lisp-indent-function 1)
195 (defmacro gnus-search-or-regist-spec (mspec &rest body)
196 (let ((specs (nth 0 mspec)) (type (nth 1 mspec)) (format (nth 2 mspec))
197 (spec (nth 3 mspec)) (entry (nth 4 mspec)) (elem (nth 5 mspec)))
198 `(let* ((,entry (assq ,type ,specs))
199 (,elem (assoc ,format (cdr ,entry))))
205 (setcdr ,entry (cons (cons ,format ,spec) (cdr ,entry))))
206 (push (list ,type (cons ,format ,spec)) ,specs))
207 (gnus-product-variable-touch (quote ,specs)))
210 (defun gnus-update-format-specification-1 (type format val)
211 (set (intern (format "gnus-%s-line-format-spec" type))
212 (gnus-search-or-regist-spec (gnus-format-specs-compiled
213 type format val entry elem)
214 (when (and gnus-compile-user-specs val)
217 (fset 'gnus-tmp-func `(lambda () ,val))
219 (let (byte-compile-warnings)
220 (byte-compile 'gnus-tmp-func))
221 (gnus-byte-code 'gnus-tmp-func))
222 (when (get-buffer "*Compile-Log*")
223 (bury-buffer "*Compile-Log*"))
224 (when (get-buffer "*Compile-Log-Show*")
225 (bury-buffer "*Compile-Log-Show*"))))))))
227 (defun gnus-update-format-specifications (&optional force &rest types)
228 "Update all (necessary) format specifications."
229 ;; Make the indentation array.
230 ;; See whether all the stored info needs to be flushed.
232 (message "%s" "Force update format specs.")
233 (setq gnus-format-specs nil
234 gnus-format-specs-compiled nil)
235 (gnus-product-variable-touch 'gnus-format-specs
236 'gnus-format-specs-compiled))
237 ;; Flush the group format spec cache if there's the grouplens stuff.
238 (let ((spec (assq 'group gnus-format-specs)))
239 (when (and (memq 'group types)
240 (string-match " gnus-tmp-grouplens[ )]"
241 (gnus-prin1-to-string (cdr spec))))
242 (setq gnus-format-specs (delq spec gnus-format-specs)
243 spec (assq 'group gnus-format-specs-compiled)
244 gnus-format-specs-compiled (delq spec gnus-format-specs-compiled))))
246 ;; Go through all the formats and see whether they need updating.
249 (while (setq type (pop types))
250 ;; Jump to the proper buffer to find out the value of the
251 ;; variable, if possible. (It may be buffer-local.)
253 (let ((buffer (intern (format "gnus-%s-buffer" type))))
254 (when (and (boundp buffer)
255 (setq val (symbol-value buffer))
256 (gnus-buffer-exists-p val))
259 (intern (format "gnus-%s-line-format" type))))))
260 (or (gnus-update-format-specification-1 type new-format nil)
261 ;; This is a new format.
262 (gnus-update-format-specification-1
264 (gnus-search-or-regist-spec (gnus-format-specs
265 type new-format val entry elem)
266 (setq val (if (stringp new-format)
267 ;; This is a "real" format.
271 (intern (format "gnus-%s-line-format-alist"
273 (not (string-match "mode$"
274 (symbol-name type))))
275 ;; This is a function call or something.
278 (defvar gnus-mouse-face-0 'highlight)
279 (defvar gnus-mouse-face-1 'highlight)
280 (defvar gnus-mouse-face-2 'highlight)
281 (defvar gnus-mouse-face-3 'highlight)
282 (defvar gnus-mouse-face-4 'highlight)
284 (defun gnus-mouse-face-function (form type)
285 `(gnus-put-text-property
286 (point) (progn ,@form (point))
290 `(quote ,(symbol-value (intern (format "gnus-mouse-face-%d" type)))))))
292 (defvar gnus-face-0 'bold)
293 (defvar gnus-face-1 'italic)
294 (defvar gnus-face-2 'bold-italic)
295 (defvar gnus-face-3 'bold)
296 (defvar gnus-face-4 'bold)
298 (defun gnus-face-face-function (form type)
299 `(gnus-add-text-properties
300 (point) (progn ,@form (point))
301 '(gnus-face t face ,(symbol-value (intern (format "gnus-face-%d" type))))))
303 (defun gnus-balloon-face-function (form type)
304 `(gnus-put-text-property
305 (point) (progn ,@form (point))
306 ,(if (fboundp 'balloon-help-mode)
309 ,(intern (format "gnus-balloon-face-%d" type))))
311 (defun gnus-spec-tab (column)
313 `(insert (make-string (max (- ,column (current-column)) 0) ? ))
314 (let ((column (abs column)))
315 (if gnus-use-correct-string-widths
317 (if (> (current-column) ,column)
319 (delete-backward-char 1)
320 (> (current-column) ,column))))
321 (insert (make-string (max (- ,column (current-column)) 0) ? )))
323 (if (> (current-column) ,column)
324 (delete-region (point)
325 (- (point) (- (current-column) ,column)))
326 (insert (make-string (max (- ,column (current-column)) 0)
329 (defun gnus-correct-length (string)
330 "Return the correct width of STRING."
332 (mapcar (lambda (char) (incf length (char-width char))) string)
335 (defun gnus-correct-substring (string start &optional end)
340 (length (length string))
341 (string (concat string "\0")))
342 ;; Find the start position.
343 (while (and (< seek length)
345 (incf wseek (char-width (aref string seek)))
348 ;; Find the end position.
349 (while (and (<= seek length)
352 (incf wseek (char-width (aref string seek)))
355 (substring string wstart (1- wend))))
357 (defun gnus-string-width-function ()
359 (gnus-use-correct-string-widths
360 'gnus-correct-length)
361 ((fboundp 'string-width)
366 (defun gnus-substring-function ()
368 (gnus-use-correct-string-widths
369 'gnus-correct-substring)
370 ((fboundp 'string-width)
371 'gnus-correct-substring)
375 (defun gnus-tilde-max-form (el max-width)
376 "Return a form that limits EL to MAX-WIDTH."
377 (let ((max (abs max-width))
378 (length-fun (gnus-string-width-function))
379 (substring-fun (gnus-substring-function)))
381 `(if (> (,length-fun ,el) ,max)
383 `(,substring-fun ,el (- (,length-fun ,el) ,max))
384 `(,substring-fun ,el 0 ,max))
386 `(let ((val (eval ,el)))
387 (if (> (,length-fun val) ,max)
389 `(,substring-fun val (- (,length-fun val) ,max))
390 `(,substring-fun val 0 ,max))
393 (defun gnus-tilde-cut-form (el cut-width)
394 "Return a form that cuts CUT-WIDTH off of EL."
395 (let ((cut (abs cut-width))
396 (length-fun (gnus-string-width-function))
397 (substring-fun (gnus-substring-function)))
399 `(if (> (,length-fun ,el) ,cut)
401 `(,substring-fun ,el 0 (- (,length-fun ,el) ,cut))
402 `(,substring-fun ,el ,cut))
404 `(let ((val (eval ,el)))
405 (if (> (,length-fun val) ,cut)
407 `(,substring-fun val 0 (- (,length-fun val) ,cut))
408 `(,substring-fun val ,cut))
411 (defun gnus-tilde-ignore-form (el ignore-value)
412 "Return a form that is blank when EL is IGNORE-VALUE."
414 `(if (equal ,el ,ignore-value)
416 `(let ((val (eval ,el)))
417 (if (equal val ,ignore-value)
420 (defun gnus-pad-form (el pad-width)
421 "Return a form that pads EL to PAD-WIDTH accounting for multi-column
422 characters correctly. This is because `format' may pad to columns or to
423 characters when given a pad value."
424 (let ((pad (abs pad-width))
425 (side (< 0 pad-width))
426 (length-fun (gnus-string-width-function)))
428 `(let ((need (- ,pad (,length-fun ,el))))
430 (concat ,(when side '(make-string need ?\ ))
432 ,(when (not side) '(make-string need ?\ )))
434 `(let* ((val (eval ,el))
435 (need (- ,pad (,length-fun val))))
437 (concat ,(when side '(make-string need ?\ ))
439 ,(when (not side) '(make-string need ?\ )))
442 (defun gnus-parse-format (format spec-alist &optional insert)
443 ;; This function parses the FORMAT string with the help of the
444 ;; SPEC-ALIST and returns a list that can be eval'ed to return the
445 ;; string. If the FORMAT string contains the specifiers %( and %)
446 ;; the text between them will have the mouse-face text property.
447 ;; If the FORMAT string contains the specifiers %[ and %], the text between
448 ;; them will have the balloon-help text property.
449 (let ((case-fold-search nil))
451 "\\`\\(.*\\)%[0-9]?[{(«]\\(.*\\)%[0-9]?[»})]\\(.*\n?\\)\\'\\|%[-0-9]*=\\|%[-0-9]*\\*"
453 (gnus-parse-complex-format format spec-alist)
454 ;; This is a simple format.
455 (gnus-parse-simple-format format spec-alist insert))))
457 (defun gnus-parse-complex-format (format spec-alist)
458 (let ((cursor-spec nil))
460 (gnus-set-work-buffer)
462 (goto-char (point-min))
463 (while (re-search-forward "\"" nil t)
464 (replace-match "\\\"" nil t))
465 (goto-char (point-min))
467 ;; Convert all font specs into font spec lists.
468 (while (re-search-forward "%\\([0-9]+\\)?\\([«»{}()]\\)" nil t)
469 (let ((number (if (match-beginning 1)
470 (match-string 1) "0"))
471 (delim (aref (match-string 2) 0)))
472 (if (or (= delim ?\()
475 (replace-match (concat "\"("
476 (cond ((= delim ?\() "mouse")
477 ((= delim ?\{) "face")
481 (replace-match "\")\""))))
482 (goto-char (point-max))
484 ;; Convert point position commands.
485 (goto-char (point-min))
486 (let ((case-fold-search nil))
487 (while (re-search-forward "%\\([-0-9]+\\)?\\*" nil t)
488 (replace-match "\"(point)\"" t t)
489 (setq cursor-spec t)))
490 ;; Convert TAB commands.
491 (goto-char (point-min))
492 (while (re-search-forward "%\\([-0-9]+\\)=" nil t)
493 (replace-match (format "\"(tab %s)\"" (match-string 1)) t t))
494 ;; Convert the buffer into the spec.
495 (goto-char (point-min))
496 (let ((form (read (current-buffer))))
498 `(let (gnus-position)
499 ,@(gnus-complex-form-to-spec form spec-alist)
501 (gnus-put-text-property gnus-position (1+ gnus-position)
504 ,@(gnus-complex-form-to-spec form spec-alist)))))))
506 (defun gnus-complex-form-to-spec (form spec-alist)
512 (gnus-parse-simple-format sform spec-alist t))
513 ((eq (car sform) 'point)
514 '(setq gnus-position (point)))
515 ((eq (car sform) 'tab)
516 (gnus-spec-tab (cadr sform)))
518 (funcall (intern (format "gnus-%s-face-function" (car sform)))
519 (gnus-complex-form-to-spec (cddr sform) spec-alist)
524 (defun gnus-xmas-format (fstring &rest args)
525 "A version of `format' which preserves text properties.
527 Required for XEmacs, where the built in `format' function strips all text
528 properties from both the format string and any inserted strings.
530 Only supports the format sequence %s, and %% for inserting
531 literal % characters. A pad width and an optional - (to right pad)
532 are supported for %s."
533 (let ((re "%%\\|%\\(-\\)?\\([1-9][0-9]*\\)?s")
537 (goto-char (point-min))
538 (while (re-search-forward re nil t)
539 (goto-char (match-end 0))
541 ((string= (match-string 0) "%%")
545 (error 'wrong-number-of-arguments #'my-format n fstring))
546 (let* ((minlen (string-to-int (or (match-string 2) "")))
548 (str (if (stringp arg) arg (format "%s" arg)))
549 (lpad (null (match-string 1)))
550 (padlen (max 0 (- minlen (length str)))))
552 (if lpad (insert-char ?\ padlen))
554 (unless lpad (insert-char ?\ padlen))
555 (setq args (cdr args))))))
558 (defun gnus-parse-simple-format (format spec-alist &optional insert)
559 ;; This function parses the FORMAT string with the help of the
560 ;; SPEC-ALIST and returns a list that can be eval'ed to return a
563 spec flist fstring elem result dontinsert user-defined
564 type value pad-width spec-beg cut-width ignore-value
565 tilde-form tilde elem-type extended-spec)
567 (gnus-set-work-buffer)
569 (goto-char (point-min))
570 (while (search-forward "%" nil t)
571 (setq user-defined nil
579 (setq spec-beg (1- (point)))
581 ;; Parse this spec fully.
584 ((looking-at "\\([-.0-9]+\\)\\(,[-0-9]+\\)?")
585 (setq pad-width (string-to-number (match-string 1)))
586 (when (match-beginning 2)
587 (setq max-width (string-to-number (buffer-substring
588 (1+ (match-beginning 2))
590 (goto-char (match-end 0)))
593 (setq tilde (read (current-buffer))
597 ((memq type '(pad pad-left))
598 (setq pad-width value))
599 ((eq type 'pad-right)
600 (setq pad-width (- value)))
601 ((memq type '(max-right max))
602 (setq max-width value))
604 (setq max-width (- value)))
605 ((memq type '(cut cut-left))
606 (setq cut-width value))
607 ((eq type 'cut-right)
608 (setq cut-width (- value)))
611 (if (stringp value) value (format "%s" value))))
613 (setq tilde-form value))
615 (error "Unknown tilde type: %s" tilde)))
620 ;; User-defined spec -- find the spec name.
621 ((eq (setq spec (char-after)) ?u)
623 (when (and (eq (setq user-defined (char-after)) ?&)
624 (looking-at "&\\([^;]+\\);"))
625 (setq user-defined (match-string 1))
626 (goto-char (match-end 1))))
628 ((and (eq spec ?&) (looking-at "&\\([^;]+\\);"))
629 (setq extended-spec (intern (match-string 1)))
630 (goto-char (match-end 1))))
632 (delete-region spec-beg (point))
634 ;; Now we have all the relevant data on this spec, so
635 ;; we start doing stuff.
638 ;; "%%" just results in a "%".
643 (setq elem (list tilde-form ?s)))
644 ;; Treat user defined format specifiers specially.
648 (list (intern (format
649 (if (stringp user-defined)
650 "gnus-user-format-function-%s"
651 "gnus-user-format-function-%c")
655 ;; Find the specification from `spec-alist'.
656 ((setq elem (cdr (assq (or extended-spec spec) spec-alist))))
657 ;; We used to use "%l" for displaying the grouplens score.
659 (setq elem '("" ?s)))
661 (setq elem '("*" ?s))))
662 (setq elem-type (cadr elem))
663 ;; Insert the new format elements.
665 (not (and (featurep 'xemacs)
666 gnus-use-correct-string-widths)))
667 (insert (number-to-string pad-width)))
668 ;; Create the form to be evaled.
669 (if (or max-width cut-width ignore-value
670 (and (featurep 'xemacs)
671 gnus-use-correct-string-widths))
674 (let ((el (car elem)))
675 (cond ((= (cadr elem) ?c)
676 (setq el (list 'char-to-string el)))
678 (setq el (list 'int-to-string el))))
680 (setq el (gnus-tilde-ignore-form el ignore-value)))
682 (setq el (gnus-tilde-cut-form el cut-width)))
684 (setq el (gnus-tilde-max-form el max-width)))
686 (setq el (gnus-pad-form el pad-width)))
689 (push (car elem) flist))))
690 (setq fstring (buffer-substring-no-properties (point-min) (point-max))))
692 ;; Do some postprocessing to increase efficiency.
697 ((string= fstring "")
699 ;; Not a format string.
700 ((not (string-match "%" fstring))
702 ;; A format string with just a single string spec.
703 ((string= fstring "%s")
705 ;; A single character.
706 ((string= fstring "%c")
709 ((string= fstring "%d")
712 (list `(princ ,(car flist)))
713 (list `(int-to-string ,(car flist)))))
714 ;; Just lots of chars and strings.
715 ((string-match "\\`\\(%[cs]\\)+\\'" fstring)
717 ;; A single string spec at the beginning of the spec.
718 ((string-match "\\`%[sc][^%]+\\'" fstring)
719 (list (car flist) (substring fstring 2)))
720 ;; A single string spec in the middle of the spec.
721 ((string-match "\\`\\([^%]+\\)%[sc]\\([^%]+\\)\\'" fstring)
722 (list (match-string 1 fstring) (car flist) (match-string 2 fstring)))
723 ;; A single string spec in the end of the spec.
724 ((string-match "\\`\\([^%]+\\)%[sc]\\'" fstring)
725 (list (match-string 1 fstring) (car flist)))
726 ;; Only string (and %) specs (XEmacs only!)
727 ((and (featurep 'xemacs)
728 gnus-make-format-preserve-properties
730 "\\`\\([^%]*\\(%%\\|%-?\\([1-9][0-9]*\\)?s\\)\\)*[^%]*\\'"
732 (list (cons 'gnus-xmas-format (cons fstring (nreverse flist)))))
733 ;; A more complex spec.
735 (list (cons 'format (cons fstring (nreverse flist)))))))
741 (cons 'insert result)))
742 (cond ((stringp result)
745 (cons 'concat result))
748 (defun gnus-eval-format (format &optional alist props)
749 "Eval the format variable FORMAT, using ALIST.
750 If PROPS, insert the result."
751 (let ((form (gnus-parse-format format alist props)))
753 (gnus-add-text-properties (point) (progn (eval form) (point)) props)
756 (defun gnus-compile ()
757 "Byte-compile the user-defined format specs."
760 (let ((entries gnus-format-specs)
761 (byte-compile-warnings '(unresolved callargs redefine))
762 entry type compiled-function)
764 (gnus-message 7 "Compiling format specs...")
767 (setq entry (pop entries)
769 (if (memq type '(gnus-version version))
770 (setq gnus-format-specs (delq entry gnus-format-specs))
771 (let ((form (caddr entry)))
772 (when (and (listp form)
773 ;; Under GNU Emacs, it's (byte-code ...)
774 (not (eq 'byte-code (car form)))
775 ;; Under XEmacs, it's (funcall #<compiled-function ...>)
776 (not (and (eq 'funcall (car form))
777 (byte-code-function-p (cadr form)))))
778 (defalias 'gnus-tmp-func `(lambda () ,form))
779 (byte-compile 'gnus-tmp-func)
780 (setq compiled-function (gnus-byte-code 'gnus-tmp-func))
781 (set (intern (format "gnus-%s-line-format-spec" type))
783 (let ((elem (cdr (assq type gnus-format-specs-compiled))))
785 (set-alist 'elem (cadr entry) compiled-function)
786 (setq elem (list (cadr entry) compiled-function)))
787 (set-alist 'gnus-format-specs-compiled type elem))))))
789 (push (cons 'version emacs-version) gnus-format-specs)
790 (gnus-message 7 "Compiling user specs...done"))))
792 (defun gnus-set-format (type &optional insertable)
793 (set (intern (format "gnus-%s-line-format-spec" type))
795 (symbol-value (intern (format "gnus-%s-line-format" type)))
796 (symbol-value (intern (format "gnus-%s-line-format-alist" type)))
804 ;; coding: iso-8859-1
807 ;;; gnus-spec.el ends here