(define-key map (kbd "M-=") 'notmuch-refresh-all-buffers)
(define-key map "G" 'notmuch-poll-and-refresh-this-buffer)
(define-key map "j" 'notmuch-jump-search)
+ (define-key map [remap undo] 'notmuch-tag-undo)
map)
"Keymap shared by all notmuch modes.")