(define-key map "?" 'notmuch-help)
(define-key map "q" 'notmuch-bury-or-kill-this-buffer)
(define-key map "s" 'notmuch-search)
+ (define-key map "t" 'notmuch-search-by-tag)
(define-key map "z" 'notmuch-tree)
(define-key map "u" 'notmuch-unthreaded)
(define-key map "m" 'notmuch-mua-new-mail)