+(defun notmuch-pick-thread-mapcar (function)
+ "Iterate through all messages in the current thread
+ and call FUNCTION for side effects."
+ (save-excursion
+ (notmuch-pick-thread-top)
+ (loop collect (funcall function)
+ do (forward-line)
+ while (and (notmuch-pick-get-message-properties)
+ (not (notmuch-pick-get-prop :first))))))
+
+(defun notmuch-pick-get-messages-ids-thread-search ()
+ "Return a search string for all message ids of messages in the current thread."
+ (mapconcat 'identity
+ (notmuch-pick-thread-mapcar 'notmuch-pick-get-message-id)
+ " or "))
+
+(defun notmuch-pick-tag-thread (&optional tag-changes)
+ "Tag all messages in the current thread"
+ (interactive)
+ (when (notmuch-pick-get-message-properties)
+ (let ((tag-changes (notmuch-tag (notmuch-pick-get-messages-ids-thread-search) tag-changes)))
+ (notmuch-pick-thread-mapcar
+ (lambda () (notmuch-pick-tag-update-display tag-changes))))))
+
+(defun notmuch-pick-archive-thread (&optional unarchive)
+ "Archive each message in thread.
+
+Archive each message currently shown by applying the tag changes
+in `notmuch-archive-tags' to each. If a prefix argument is given,
+the messages will be \"unarchived\", i.e. the tag changes in
+`notmuch-archive-tags' will be reversed.
+
+Note: This command is safe from any race condition of new messages
+being delivered to the same thread. It does not archive the
+entire thread, but only the messages shown in the current
+buffer."