+(defvar notmuch-pick-message-buffer nil
+ "The buffer name of the show buffer in the message pane.
+
+This is used to try and make sure we don't close the message pane
+if the user has loaded a different buffer in that window.")
+(make-variable-buffer-local 'notmuch-pick-message-buffer)
+(put 'notmuch-pick-message-buffer 'permanent-local t)