(define-key map "b" 'notmuch-show-toggle-body-read-visible)
(define-key map "c" 'notmuch-show-toggle-citations-visible)
(define-key map "h" 'notmuch-show-toggle-headers-visible)
(define-key map "b" 'notmuch-show-toggle-body-read-visible)
(define-key map "c" 'notmuch-show-toggle-citations-visible)
(define-key map "h" 'notmuch-show-toggle-headers-visible)