emacs: add doc-string to notmuch-tree-mode-map

diff --git a/emacs/notmuch-tree.el b/emacs/notmuch-tree.el
index 7b1e34ca994dfa72801d839b3b9a95266ece5cd4..ea6a5cf3ec0547185342098e3d82015856b0e5b2 100644 (file)
--- a/emacs/notmuch-tree.el
+++ b/emacs/notmuch-tree.el
@@ -359,7 +359,8 @@ FUNC."
     (define-key map " " 'notmuch-tree-scroll-or-next)
     (define-key map (kbd "DEL") 'notmuch-tree-scroll-message-window-back)
     (define-key map "e" 'notmuch-tree-resume-message)
-    map))
+    map)
+  "Keymap for \"notmuch tree\" buffers.")
 (fset 'notmuch-tree-mode-map notmuch-tree-mode-map)
 
 (defun notmuch-tree-get-message-properties ()