(tag-changes &optional beg end only-matched))
(declare-function notmuch-show-tag "notmuch-show" (tag-changes))
(declare-function notmuch-tree-tag "notmuch-tree" (tag-changes))
(tag-changes &optional beg end only-matched))
(declare-function notmuch-show-tag "notmuch-show" (tag-changes))
(declare-function notmuch-tree-tag "notmuch-tree" (tag-changes))