+(defun notmuch-search-get-tags-region (beg end)
+ (let (output)
+ (notmuch-search-foreach-result beg end
+ (lambda (pos)
+ (setq output (append output (notmuch-search-get-tags pos)))))
+ output))
+
+(defun notmuch-search-interactive-region ()
+ "Return the bounds of the current interactive region.
+
+This returns (BEG END), where BEG and END are the bounds of the
+region if the region is active, or both `point' otherwise."
+ (if (region-active-p)
+ (list (region-beginning) (region-end))
+ (list (point) (point))))
+
+(defun notmuch-search-interactive-tag-changes (&optional initial-input)
+ "Prompt for tag changes for the current thread or region.
+
+Returns (TAG-CHANGES REGION-BEGIN REGION-END)."
+ (let* ((region (notmuch-search-interactive-region))
+ (beg (first region)) (end (second region))
+ (prompt (if (= beg end) "Tag thread" "Tag region")))
+ (cons (notmuch-read-tag-changes
+ (notmuch-search-get-tags-region beg end) prompt initial-input)
+ region)))
+
+(defun notmuch-search-tag (tag-changes &optional beg end only-matched)
+ "Change tags for the currently selected thread or region.
+
+See `notmuch-tag' for information on the format of TAG-CHANGES.
+When called interactively, this uses the region if the region is
+active. When called directly, BEG and END provide the region.
+If these are nil or not provided, then, if the region is active
+this applied to all threads meeting the region, and if the region
+is inactive this applies to the thread at point.
+
+If ONLY-MATCHED is non-nil, only tag matched messages."
+ (interactive (notmuch-search-interactive-tag-changes))
+ (unless (and beg end)
+ (setq beg (car (notmuch-search-interactive-region))
+ end (cadr (notmuch-search-interactive-region))))
+ (let ((search-string (notmuch-search-find-stable-query-region
+ beg end only-matched)))
+ (notmuch-tag search-string tag-changes)
+ (notmuch-search-foreach-result beg end
+ (lambda (pos)
+ (notmuch-search-set-tags
+ (notmuch-update-tags (notmuch-search-get-tags pos) tag-changes)
+ pos)))))
+
+(defun notmuch-search-add-tag (tag-changes &optional beg end)
+ "Change tags for the current thread or region (defaulting to add).
+
+Same as `notmuch-search-tag' but sets initial input to '+'."
+ (interactive (notmuch-search-interactive-tag-changes "+"))
+ (notmuch-search-tag tag-changes beg end))
+
+(defun notmuch-search-remove-tag (tag-changes &optional beg end)
+ "Change tags for the current thread or region (defaulting to remove).
+
+Same as `notmuch-search-tag' but sets initial input to '-'."
+ (interactive (notmuch-search-interactive-tag-changes "-"))
+ (notmuch-search-tag tag-changes beg end))
+
+(put 'notmuch-search-archive-thread 'notmuch-prefix-doc
+ "Un-archive the currently selected thread.")
+(defun notmuch-search-archive-thread (&optional unarchive beg end)
+ "Archive the currently selected thread or region.
+
+Archive each message in the currently selected thread by applying
+the tag changes in `notmuch-archive-tags' to each (remove the
+\"inbox\" tag by default). If a prefix argument is given, the
+messages will be \"unarchived\" (i.e. the tag changes in
+`notmuch-archive-tags' will be reversed).