function; this specifies reversed sort order.
Ready-made functions include `gnus-thread-sort-by-number',
-`gnus-thread-sort-by-author', `gnus-thread-sort-by-subject',
-`gnus-thread-sort-by-date', `gnus-thread-sort-by-score',
-`gnus-thread-sort-by-most-recent-number',
-`gnus-thread-sort-by-most-recent-date',
-`gnus-thread-sort-by-random', and
-`gnus-thread-sort-by-total-score' (see `gnus-thread-score-function').
+`gnus-thread-sort-by-author', `gnus-thread-sort-by-recipient'
+`gnus-thread-sort-by-subject', `gnus-thread-sort-by-date',
+`gnus-thread-sort-by-score', `gnus-thread-sort-by-most-recent-number',
+`gnus-thread-sort-by-most-recent-date', `gnus-thread-sort-by-random',
+and `gnus-thread-sort-by-total-score' (see
+`gnus-thread-score-function').
When threading is turned off, the variable
`gnus-article-sort-functions' controls how articles are sorted."
:group 'gnus-summary-sort
- :type '(repeat
+ :type '(repeat
(gnus-widget-reversible
(choice (function-item gnus-thread-sort-by-number)
(function-item gnus-thread-sort-by-author)
+ (function-item gnus-thread-sort-by-recipient)
(function-item gnus-thread-sort-by-subject)
(function-item gnus-thread-sort-by-date)
(function-item gnus-thread-sort-by-score)
(or (cdr (assq 'To (mail-header-extra h2))) ""))))
(or (car extract) (cadr extract)))))
+(defun gnus-thread-sort-by-recipient (h1 h2)
+ "Sort threads by root recipient."
+ (gnus-article-sort-by-recipient
+ (gnus-thread-header h1) (gnus-thread-header h2)))
+
(defsubst gnus-article-sort-by-subject (h1 h2)
"Sort articles by root subject."
(string-lessp