j is in the global notmuch keymap bound to notmuch jump. In tree-mode it makes sense to close the message pane first (otherwise the new search runs in the small top pane of tree-mode). --- I think this is essentially a bugfix -- I can't see why someone would want to keep the message pane open in tree-mode when using notmuch jump: the broad ethos of tree-mode is that the tree-view and the message pane are really one window. Best wishes Mark emacs/notmuch-tree.el | 2 ++ 1 file changed, 2 insertions(+) diff --git a/emacs/notmuch-tree.el b/emacs/notmuch-tree.el index 5431384..851e112 100644 --- a/emacs/notmuch-tree.el +++ b/emacs/notmuch-tree.el @@ -241,6 +241,8 @@ FUNC." (define-key map [remap notmuch-search] 'notmuch-tree-to-search) ;; Override because we want to close message pane first. (define-key map [remap notmuch-mua-new-mail] (notmuch-tree-close-message-pane-and #'notmuch-mua-new-mail)) + ;; Override because we want to close message pane first. + (define-key map [remap notmuch-jump-search] (notmuch-tree-close-message-pane-and #'notmuch-jump-search)) (define-key map "S" 'notmuch-search-from-tree-current-query) -- 2.1.4