Following a suggestion by Austin in id:20130915153642.GY1426@mit.edu
we use remap for the over-riding bindings in pick. This means that if
the user modifies the global keymap these modifications will happen in
the tree-view versions of them too.

[tree-view overrides these to do things like close the message pane
before doing the action, so the functionality is very close to the
original common keymap function.]
---
 emacs/notmuch-tree.el |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/emacs/notmuch-tree.el b/emacs/notmuch-tree.el
index f13b41f..8d59e65 100644
--- a/emacs/notmuch-tree.el
+++ b/emacs/notmuch-tree.el
@@ -220,13 +220,13 @@ FUNC."
     (set-keymap-parent map notmuch-common-keymap)
     ;; The following override the global keymap.
     ;; Override because we want to close message pane first.
-    (define-key map "?" (notmuch-tree-close-message-pane-and #'notmuch-help))
+    (define-key map [remap notmuch-help] (notmuch-tree-close-message-pane-and #'notmuch-help))
     ;; Override because we first close message pane and then close tree buffer.
-    (define-key map "q" 'notmuch-tree-quit)
+    (define-key map [remap notmuch-kill-this-buffer] 'notmuch-tree-quit)
     ;; Override because we close message pane after the search query is entered.
-    (define-key map "s" 'notmuch-tree-to-search)
+    (define-key map [remap notmuch-search] 'notmuch-tree-to-search)
     ;; Override because we want to close message pane first.
-    (define-key map "m" (notmuch-tree-close-message-pane-and #'notmuch-mua-new-mail))
+    (define-key map [remap notmuch-mua-new-mail] (notmuch-tree-close-message-pane-and #'notmuch-mua-new-mail))
 
     ;; these use notmuch-show functions directly
     (define-key map "|" 'notmuch-show-pipe-message)
-- 
1.7.9.1