(defmacro notmuch-tree--define-do-in-message-window (name cmd)
"Define NAME as a command that calls CMD interactively in the message window.
If the message pane is closed then this command does nothing.
(defmacro notmuch-tree--define-do-in-message-window (name cmd)
"Define NAME as a command that calls CMD interactively in the message window.
If the message pane is closed then this command does nothing.