1 ;;; vm-sort.el --- Sorting and moving messages inside VM
2 ;; Copyright (C) 1993, 1994 Kyle E. Jones
3 ;; Copyright (C) 2003-2006 Robert Widhopf-Fenk
5 ;; This program is free software; you can redistribute it and/or modify
6 ;; it under the terms of the GNU General Public License as published by
7 ;; the Free Software Foundation; either version 2 of the License, or
8 ;; (at your option) any later version.
10 ;; This program is distributed in the hope that it will be useful,
11 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
12 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 ;; GNU General Public License for more details.
15 ;; You should have received a copy of the GNU General Public License along
16 ;; with this program; if not, write to the Free Software Foundation, Inc.,
17 ;; 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
24 (defun vm-move-message-forward (count)
25 "Move a message forward in a VM folder.
26 Prefix arg COUNT causes the current message to be moved COUNT messages forward.
27 A negative COUNT causes movement to be backward instead of forward.
28 COUNT defaults to 1. The current message remains selected after being
31 If vm-move-messages-physically is non-nil, the physical copy of
32 the message in the folder is moved. A nil value means just
33 change the presentation order and leave the physical order of
34 the folder undisturbed."
36 (vm-follow-summary-cursor)
37 (vm-select-folder-buffer)
38 (vm-check-for-killed-summary)
39 (vm-error-if-folder-empty)
40 (if vm-move-messages-physically
41 (vm-error-if-folder-read-only))
42 (vm-display nil nil '(vm-move-message-forward
43 vm-move-message-backward
44 vm-move-message-forward-physically
45 vm-move-message-backward-physically)
47 (let* ((ovmp vm-message-pointer) vmp-prev ovmp-prev
48 (vm-message-pointer vm-message-pointer)
49 (direction (if (> count 0) 'forward 'backward))
50 (count (vm-abs count)))
51 (while (not (zerop count))
52 (vm-move-message-pointer direction)
54 (if (> (string-to-number (vm-number-of (car vm-message-pointer)))
55 (string-to-number (vm-number-of (car ovmp))))
56 (setq vm-message-pointer (cdr vm-message-pointer)))
57 (if (eq vm-message-pointer ovmp)
59 (if (null vm-message-pointer)
60 (setq vmp-prev (vm-last vm-message-list))
61 (setq vmp-prev (vm-reverse-link-of (car vm-message-pointer))))
62 (setq ovmp-prev (vm-reverse-link-of (car ovmp)))
63 ;; lock out interrupts to preserve message list integrity.
64 (let ((inhibit-quit t))
67 (setcdr ovmp-prev (cdr ovmp))
69 (vm-set-reverse-link-of (car (cdr ovmp)) ovmp-prev)))
70 (setq vm-message-list (cdr ovmp))
71 (vm-set-reverse-link-of (car vm-message-list) nil))
74 (setcdr vmp-prev ovmp)
75 (vm-set-reverse-link-of (car ovmp) vmp-prev))
76 (setq vm-message-list ovmp)
77 (vm-set-reverse-link-of (car vm-message-list) nil))
78 (setcdr ovmp vm-message-pointer)
79 (and vm-message-pointer
80 (vm-set-reverse-link-of (car vm-message-pointer) ovmp))
81 (if (and vm-move-messages-physically
82 (not (eq major-mode 'vm-virtual-mode)))
83 (vm-physically-move-message (car ovmp) (car vm-message-pointer)))
84 (setq vm-ml-sort-keys nil)
85 (if (not vm-folder-read-only)
87 (setq vm-message-order-changed t)
88 (vm-set-buffer-modified-p t)
89 (vm-clear-modification-flag-undos))))
90 (cond ((null ovmp-prev)
91 (setq vm-numbering-redo-start-point vm-message-list
92 vm-numbering-redo-end-point vm-message-pointer
93 vm-summary-pointer (car vm-message-list)))
95 (setq vm-numbering-redo-start-point vm-message-list
96 vm-numbering-redo-end-point (cdr ovmp-prev)
97 vm-summary-pointer (car ovmp-prev)))
98 ((or (not vm-message-pointer)
99 (< (string-to-number (vm-number-of (car ovmp-prev)))
100 (string-to-number (vm-number-of (car vm-message-pointer)))))
101 (setq vm-numbering-redo-start-point (cdr ovmp-prev)
102 vm-numbering-redo-end-point (cdr ovmp)
103 vm-summary-pointer (car (cdr ovmp-prev))))
105 (setq vm-numbering-redo-start-point ovmp
106 vm-numbering-redo-end-point (cdr ovmp-prev)
107 vm-summary-pointer (car ovmp-prev))))
108 (if vm-summary-buffer
110 (vm-copy-local-variables vm-summary-buffer 'vm-summary-pointer)
111 (setq vm-need-summary-pointer-update t)
112 (setq mp vm-numbering-redo-start-point)
113 (while (not (eq mp vm-numbering-redo-end-point))
114 (vm-mark-for-summary-update (car mp))
115 (setq list (cons (car mp) list)
120 (vm-set-su-start-of m (car p))
121 (vm-set-su-end-of m (car (cdr p)))))
122 (setq list (nreverse list))
127 (list (vm-su-start-of p) (vm-su-end-of p))))
131 (< (car p) (car q))))))))))
132 (if vm-move-messages-physically
133 ;; clip region is messed up
134 (vm-preview-current-message)
135 (vm-update-summary-and-mode-line)))
138 (defun vm-move-message-backward (count)
139 "Move a message backward in a VM folder.
140 Prefix arg COUNT causes the current message to be moved COUNT
141 messages backward. A negative COUNT causes movement to be
142 forward instead of backward. COUNT defaults to 1. The current
143 message remains selected after being moved.
145 If vm-move-messages-physically is non-nil, the physical copy of
146 the message in the folder is moved. A nil value means just
147 change the presentation order and leave the physical order of
148 the folder undisturbed."
150 (vm-move-message-forward (- count)))
153 (defun vm-move-message-forward-physically (count)
154 "Like vm-move-message-forward but always move the message physically."
156 (let ((vm-move-messages-physically t))
157 (vm-move-message-forward count)))
160 (defun vm-move-message-backward-physically (count)
161 "Like vm-move-message-backward but always move the message physically."
163 (let ((vm-move-messages-physically t))
164 (vm-move-message-backward count)))
166 ;; move message m to be before m-dest
167 ;; and fix up the location markers afterwards.
168 ;; m better not equal m-dest.
169 ;; of m-dest is nil, move m to the end of buffer.
171 ;; consider carefully the effects of insertion on markers
172 ;; and variables containg markers before you modify this code.
173 (defun vm-physically-move-message (m m-dest)
178 ;; Make sure vm-headers-of and vm-text-of are non-nil in
179 ;; their slots before we try to move them. (Simply
180 ;; referencing the slot with their slot function is
181 ;; sufficient to guarantee this.) Otherwise, they be
182 ;; initialized in the middle of the message move and get the
183 ;; offset applied to them twice by way of a relative offset
184 ;; from one of the other location markers that has already
187 ;; Also, and more importantly, vm-vheaders-of might run
188 ;; vm-reorder-message-headers, which can add text to
189 ;; message. This MUST NOT happen after offsets have been
190 ;; computed for the message move or varying levels of chaos
191 ;; will ensue. In the case of BABYL files, where
192 ;; vm-reorder-message-headers can add a lot of new text,
193 ;; folder curroption can be massive.
197 (let ((dest-start (if m-dest (vm-start-of m-dest) (point-max)))
198 (buffer-read-only nil)
199 offset doomed-start doomed-end)
200 (goto-char dest-start)
201 (insert-buffer-substring (current-buffer) (vm-start-of m) (vm-end-of m))
202 (setq doomed-start (marker-position (vm-start-of m))
203 doomed-end (marker-position (vm-end-of m))
204 offset (- (vm-start-of m) dest-start))
205 (set-marker (vm-start-of m) (- (vm-start-of m) offset))
206 (set-marker (vm-headers-of m) (- (vm-headers-of m) offset))
207 (set-marker (vm-text-end-of m) (- (vm-text-end-of m) offset))
208 (set-marker (vm-end-of m) (- (vm-end-of m) offset))
209 (set-marker (vm-text-of m) (- (vm-text-of m) offset))
210 (set-marker (vm-vheaders-of m) (- (vm-vheaders-of m) offset))
211 ;; now fix the start of m-dest since it didn't
212 ;; move forward with its message.
213 (and m-dest (set-marker (vm-start-of m-dest) (vm-end-of m)))
214 ;; delete the old copy of the message
215 (delete-region doomed-start doomed-end)))))
218 (defun vm-so-sortable-datestring (m)
219 (or (vm-sortable-datestring-of m)
221 (vm-set-sortable-datestring-of
224 (vm-timezone-make-date-sortable
225 (or (vm-get-header-contents m "Date:")
226 (vm-grok-From_-date m)
227 "Thu, 1 Jan 1970 00:00:00 GMT"))
228 (error "1970010100:00:00")))
229 (vm-sortable-datestring-of m))))
232 (defun vm-so-sortable-subject (m)
233 (or (vm-sortable-subject-of m)
235 (vm-set-sortable-subject-of
237 (let ((case-fold-search t)
238 (subject (vm-su-subject m)))
239 (if (and vm-subject-ignored-prefix
240 (string-match vm-subject-ignored-prefix subject)
241 (zerop (match-beginning 0)))
242 (setq subject (substring subject (match-end 0))))
243 (if (and vm-subject-ignored-suffix
244 (string-match vm-subject-ignored-suffix subject)
245 (= (match-end 0) (length subject)))
246 (setq subject (substring subject 0 (match-beginning 0))))
247 (setq subject (vm-with-string-as-temp-buffer
249 (function vm-collapse-whitespace)))
250 (if (and vm-subject-significant-chars
251 (natnump vm-subject-significant-chars)
252 (< vm-subject-significant-chars (length subject)))
254 (substring subject 0 vm-subject-significant-chars)))
256 (vm-sortable-subject-of m))))
258 (defvar vm-sort-compare-header nil
259 "the header to sort on.")
261 (defvar vm-sort-compare-header-history nil)
264 (defun vm-sort-messages (keys &optional lets-get-physical)
265 "Sort message in a folder by the specified KEYS.
266 You may sort by more than one particular message key. If
267 messages compare equal by the first key, the second key will be
268 compared and so on. When called interactively the keys will be
269 read from the minibuffer. Valid keys are
271 \"date\" \"reversed-date\"
272 \"author\" \"reversed-author\"
273 \"full-name\" \"reversed-full-name\"
274 \"subject\" \"reversed-subject\"
275 \"recipients\" \"reversed-recipients\"
276 \"line-count\" \"reversed-line-count\"
277 \"byte-count\" \"reversed-byte-count\"
278 \"physical-order\" \"reversed-physical-order\"
279 \"spam-score\" \"reversed-spam-score\"
281 Optional second arg (prefix arg interactively) means the sort
282 should change the physical order of the messages in the folder.
283 Normally VM changes presentation order only, leaving the
284 folder in the order in which the messages arrived."
286 (let ((last-command last-command)
287 (this-command this-command))
288 (list (vm-read-string (if (or current-prefix-arg
289 vm-move-messages-physically)
290 "Physically sort messages by: "
291 "Sort messages by: ")
292 vm-supported-sort-keys t)
293 current-prefix-arg)))
294 (vm-select-folder-buffer)
295 (vm-check-for-killed-summary)
296 ;; only squawk if interactive. The thread display uses this
297 ;; function and doesn't expect errors.
299 (vm-error-if-folder-empty))
301 (if (and (interactive-p) (or vm-move-messages-physically lets-get-physical))
302 (vm-error-if-folder-read-only))
304 (vm-display nil nil '(vm-sort-messages) '(vm-sort-messages))
305 (let (key-list key-funcs key ml-keys
306 physical-order-list old-message-list new-message-list mp-old mp-new
308 doomed-start doomed-end offset
309 (order-did-change nil)
313 (setq key-list (vm-parse keys "[ \t]*\\([^ \t]+\\)")
314 ml-keys (and key-list (mapconcat (function identity) key-list "/"))
316 old-message-list vm-message-list
317 virtual (eq major-mode 'vm-virtual-mode)
318 physical (and (or lets-get-physical
319 vm-move-messages-physically)
320 (not vm-folder-read-only)
322 (or key-list (error "No sort keys specified."))
324 (setq key (car key-list))
325 (cond ((equal key "thread")
326 (vm-build-threads-if-unbuilt)
327 (vm-build-thread-lists)
328 (setq key-funcs (cons 'vm-sort-compare-thread key-funcs)))
329 ((equal key "auto-folder")
330 (setq auto-folder-p t)
331 (setq key-funcs (cons 'vm-sort-compare-auto-folder key-funcs)))
332 ((equal key "author")
333 (setq key-funcs (cons 'vm-sort-compare-author key-funcs)))
334 ((equal key "reversed-author")
335 (setq key-funcs (cons 'vm-sort-compare-author-r key-funcs)))
336 ((equal key "full-name")
337 (setq key-funcs (cons 'vm-sort-compare-full-name key-funcs)))
338 ((equal key "reversed-full-name")
339 (setq key-funcs (cons 'vm-sort-compare-full-name-r key-funcs)))
341 (setq key-funcs (cons 'vm-sort-compare-date key-funcs)))
342 ((equal key "reversed-date")
343 (setq key-funcs (cons 'vm-sort-compare-date-r key-funcs)))
344 ((equal key "subject")
345 (setq key-funcs (cons 'vm-sort-compare-subject key-funcs)))
346 ((equal key "reversed-subject")
347 (setq key-funcs (cons 'vm-sort-compare-subject-r key-funcs)))
348 ((equal key "recipients")
349 (setq key-funcs (cons 'vm-sort-compare-recipients key-funcs)))
350 ((equal key "reversed-recipients")
351 (setq key-funcs (cons 'vm-sort-compare-recipients-r key-funcs)))
352 ((equal key "byte-count")
353 (setq key-funcs (cons 'vm-sort-compare-byte-count key-funcs)))
354 ((equal key "reversed-byte-count")
355 (setq key-funcs (cons 'vm-sort-compare-byte-count-r key-funcs)))
356 ((equal key "line-count")
357 (setq key-funcs (cons 'vm-sort-compare-line-count key-funcs)))
358 ((equal key "reversed-line-count")
359 (setq key-funcs (cons 'vm-sort-compare-line-count-r key-funcs)))
360 ((equal key "spam-score")
361 (setq key-funcs (cons 'vm-sort-compare-spam-score key-funcs)))
362 ((equal key "reversed-spam-score")
363 (setq key-funcs (cons 'vm-sort-compare-spam-score-r key-funcs)))
364 ((equal key "physical-order")
365 (setq key-funcs (cons 'vm-sort-compare-physical-order key-funcs)))
366 ((equal key "reversed-physical-order")
367 (setq key-funcs (cons 'vm-sort-compare-physical-order-r key-funcs)))
368 ((equal key "header")
369 (setq vm-sort-compare-header nil)
370 (setq key-funcs (cons 'vm-sort-compare-header key-funcs)))
372 (let ((compare (intern (format "vm-sort-compare-%s" key))))
373 (if (functionp compare)
374 (setq key-funcs (cons compare key-funcs))
375 (error "Unknown key: %s" key)))))
376 (setq key-list (cdr key-list)))
377 ;; if this is not a thread sort and threading is enabled,
378 ;; then disable threading and make sure the whole summary is
379 ;; regenerated (to recalculate %I everywhere).
380 (if (and vm-summary-show-threads
381 (not (equal key-funcs '(vm-sort-compare-thread))))
383 (setq vm-summary-show-threads nil)
384 (vm-set-summary-redo-start-point t)))
385 (message "Sorting...")
386 (let ((vm-key-functions (nreverse key-funcs)))
387 (setq new-message-list (sort (copy-sequence old-message-list)
388 'vm-sort-compare-xxxxxx))
389 ;; only need to do this sort if we're going to physically
390 ;; move messages later.
392 (setq vm-key-functions '(vm-sort-compare-physical-order)
393 physical-order-list (sort (copy-sequence old-message-list)
394 'vm-sort-compare-xxxxxx))))
395 (message "Sorting... done")
396 (let ((inhibit-quit t))
397 (setq mp-old old-message-list
398 mp-new new-message-list)
400 (if (eq (car mp-old) (car mp-new))
401 (setq mp-old (cdr mp-old)
403 (setq order-did-change t)
404 ;; unless a full redo has been requested, the numbering
405 ;; start point now points to a cons in the old message
406 ;; list. therefore we just change the variable
407 ;; directly to avoid the list scan that
408 ;; vm-set-numbering-redo-start-point does.
409 (cond ((not (eq vm-numbering-redo-start-point t))
410 (setq vm-numbering-redo-start-point mp-new
411 vm-numbering-redo-end-point nil)))
412 (if vm-summary-buffer
414 (setq vm-need-summary-pointer-update t)
415 ;; same logic as numbering reset above...
416 (cond ((not (eq vm-summary-redo-start-point t))
417 (setq vm-summary-redo-start-point mp-new)))
418 ;; start point of this message's summary is now
419 ;; wrong relative to where it is in the
420 ;; message list. fix it and the summary rebuild
421 ;; will take care of the rest.
422 (vm-set-su-start-of (car mp-new)
423 (vm-su-start-of (car mp-old)))))
425 (if (and physical (vm-has-message-order))
426 (let ((buffer-read-only nil))
427 ;; the folder is being physically ordered so we don't
428 ;; need a message order header to be stuffed, nor do
429 ;; we need to retain one in the folder buffer. so we
430 ;; strip out any existing message order header and
431 ;; say there are no changes to prevent a message
432 ;; order header from being stuffed later.
433 (vm-remove-message-order)
434 (setq vm-message-order-changed nil)
435 (message "Moving messages... ")
437 (setq mp-old physical-order-list
438 mp-new new-message-list)
439 (setq old-start (vm-start-of (car mp-old)))
441 (if (< (vm-start-of (car mp-old)) old-start)
442 ;; already moved this message
443 (setq mp-old (cdr mp-old))
444 (if (eq (car mp-old) (car mp-new))
445 (setq mp-old (cdr mp-old)
448 (vm-physically-move-message (car mp-new) (car mp-old))
449 ;; record start position. if vm-start-of
450 ;; mp-old ever becomes less than old-start
451 ;; we're running into messages that have
452 ;; already been moved.
453 (setq old-start (vm-start-of (car mp-old)))
454 ;; move mp-new but not mp-old because we moved
455 ;; mp-old down one message by inserting a
456 ;; message in front of it.
457 (setq mp-new (cdr mp-new)))))
458 (message "Moving messages... done")
459 (vm-set-buffer-modified-p t)
460 (vm-clear-modification-flag-undos))
461 (if (and order-did-change (not vm-folder-read-only))
463 (setq vm-message-order-changed t)
464 (vm-set-buffer-modified-p t)
465 (vm-clear-modification-flag-undos))))
466 (setq vm-ml-sort-keys ml-keys)
467 (intern (buffer-name) vm-buffers-needing-display-update)
468 (cond (order-did-change
469 (setq vm-message-list new-message-list)
470 (vm-reverse-link-messages)
471 (if vm-message-pointer
472 (setq vm-message-pointer
473 (or (cdr (vm-reverse-link-of (car vm-message-pointer)))
475 (if vm-last-message-pointer
476 (setq vm-last-message-pointer
477 (or (cdr (vm-reverse-link-of
478 (car vm-last-message-pointer)))
479 vm-message-list))))))
480 (if (and vm-message-pointer
482 (or lets-get-physical vm-move-messages-physically))
483 ;; clip region is most likely messed up
484 (vm-preview-current-message)
485 (vm-update-summary-and-mode-line))
488 (vm-sort-insert-auto-folder-names))))
491 (defun vm-sort-compare-xxxxxx (m1 m2)
492 (let ((key-funcs vm-key-functions) result)
493 (while (and key-funcs
494 (eq '= (setq result (funcall (car key-funcs) m1 m2))))
495 (setq key-funcs (cdr key-funcs)))
496 (and key-funcs result) ))
498 (defun vm-sort-compare-thread (m1 m2)
499 (let ((list1 (vm-th-thread-list m1))
500 (list2 (vm-th-thread-list m2))
503 (if (not (eq (car list1) (car list2)))
504 (let ((date1 (get (car list1) 'youngest-date))
505 (date2 (get (car list2) 'youngest-date)))
506 (cond ((string-lessp date1 date2) t)
507 ((string-equal date1 date2)
508 (string-lessp (car list1) (car list2)))
510 (setq list1 (cdr list1) list2 (cdr list2))
511 (while (and list1 list2)
512 (setq p1 (car list1) p2 (car list2))
513 (cond ((not (string-equal p1 p2))
514 (setq d1 (or (get p1 'date) "0") d2 (or (get p2 'date) "0"))
515 (cond ((string-lessp d1 d2)
517 ((string-lessp d2 d1)
519 ((string-lessp p1 p2)
523 (setq list1 (cdr list1)
525 (cond ((and list1 (not list2)) nil)
526 ((and list2 (not list1)) t)
529 (defun vm-sort-compare-author (m1 m2)
530 (let ((s1 (vm-su-from m1))
531 (s2 (vm-su-from m2)))
532 (cond ((string-lessp s1 s2) t)
533 ((string-equal s1 s2) '=)
536 (defun vm-sort-compare-author-r (m1 m2)
537 (let ((s1 (vm-su-from m1))
538 (s2 (vm-su-from m2)))
539 (cond ((string-lessp s1 s2) nil)
540 ((string-equal s1 s2) '=)
543 (defun vm-sort-compare-full-name (m1 m2)
544 (let ((s1 (vm-su-full-name m1))
545 (s2 (vm-su-full-name m2)))
546 (cond ((string-lessp s1 s2) t)
547 ((string-equal s1 s2) '=)
550 (defun vm-sort-compare-full-name-r (m1 m2)
551 (let ((s1 (vm-su-full-name m1))
552 (s2 (vm-su-full-name m2)))
553 (cond ((string-lessp s1 s2) nil)
554 ((string-equal s1 s2) '=)
557 (defun vm-sort-compare-date (m1 m2)
558 (let ((s1 (vm-so-sortable-datestring m1))
559 (s2 (vm-so-sortable-datestring m2)))
560 (cond ((string-lessp s1 s2) t)
561 ((string-equal s1 s2) '=)
564 (defun vm-sort-compare-date-r (m1 m2)
565 (let ((s1 (vm-so-sortable-datestring m1))
566 (s2 (vm-so-sortable-datestring m2)))
567 (cond ((string-lessp s1 s2) nil)
568 ((string-equal s1 s2) '=)
571 (defun vm-sort-compare-recipients (m1 m2)
572 (let ((s1 (vm-su-to m1))
574 (cond ((string-lessp s1 s2) t)
575 ((string-equal s1 s2) '=)
578 (defun vm-sort-compare-recipients-r (m1 m2)
579 (let ((s1 (vm-su-to m1))
581 (cond ((string-lessp s1 s2) nil)
582 ((string-equal s1 s2) '=)
585 (defun vm-sort-compare-subject (m1 m2)
586 (let ((s1 (vm-so-sortable-subject m1))
587 (s2 (vm-so-sortable-subject m2)))
588 (cond ((string-lessp s1 s2) t)
589 ((string-equal s1 s2) '=)
592 (defun vm-sort-compare-subject-r (m1 m2)
593 (let ((s1 (vm-so-sortable-subject m1))
594 (s2 (vm-so-sortable-subject m2)))
595 (cond ((string-lessp s1 s2) nil)
596 ((string-equal s1 s2) '=)
599 (defun vm-sort-compare-line-count (m1 m2)
600 (let ((n1 (string-to-number (vm-su-line-count m1)))
601 (n2 (string-to-number (vm-su-line-count m2))))
606 (defun vm-sort-compare-line-count-r (m1 m2)
607 (let ((n1 (string-to-number (vm-su-line-count m1)))
608 (n2 (string-to-number (vm-su-line-count m2))))
613 (defun vm-sort-compare-byte-count (m1 m2)
614 (let ((n1 (string-to-number (vm-su-byte-count m1)))
615 (n2 (string-to-number (vm-su-byte-count m2))))
620 (defun vm-sort-compare-byte-count-r (m1 m2)
621 (let ((n1 (string-to-number (vm-su-byte-count m1)))
622 (n2 (string-to-number (vm-su-byte-count m2))))
627 (defun vm-sort-compare-spam-score (m1 m2)
628 (let ((s1 (vm-su-spam-score m1))
629 (s2 (vm-su-spam-score m2)))
634 (defun vm-sort-compare-spam-score-r (m1 m2)
635 (let ((s1 (vm-su-spam-score m1))
636 (s2 (vm-su-spam-score m2)))
637 (cond ((< s1 s2) nil)
642 (defun vm-sort-compare-physical-order (m1 m2)
643 (let ((n1 (vm-start-of m1))
644 (n2 (vm-start-of m2)))
650 (defun vm-sort-compare-physical-order-r (m1 m2)
651 (let ((n1 (vm-start-of m1))
652 (n2 (vm-start-of m2)))
657 (add-to-list 'vm-supported-sort-keys "header")
659 (defun vm-get-headers-of (m &optional headers)
663 (let ((end (vm-text-of m)))
664 (set-buffer (vm-buffer-of m))
665 (goto-char (vm-start-of m))
666 (while (re-search-forward "^[^: \n\t]+:" end t)
667 (add-to-list 'headers (match-string 0)))
670 (defun vm-sort-compare-header (m1 m2)
671 (if (null vm-sort-compare-header)
672 (setq vm-sort-compare-header
674 (if (car vm-sort-compare-header-history)
675 (format "Sort hy header (%s): "
676 (car vm-sort-compare-header-history))
678 (mapcar (lambda (h) (list h))
679 (vm-get-headers-of m2 (vm-get-headers-of m1)))
681 'vm-sort-compare-header-history
682 (car vm-sort-compare-header-history)))
683 (string< (vm-get-header-contents m1 vm-sort-compare-header)
684 (vm-get-header-contents m2 vm-sort-compare-header))))
688 ;;; vm-sort.el ends here