Key bindings in local keymaps

Slightly different from binding a key to a keymap, is binding a key within a local keymap that only exists after the package is loaded. use-package supports this with a :map modifier, taking the local keymap to bind to:

(use-package helm
  :bind (:map helm-command-map
         ("C-c h" . helm-execute-persistent-action)))

The effect of this is to wait until helm has loaded, and then to bind the key sequence C-c h to helm-execute-persistent-action within Helm’s local keymap, helm-command-map.

Multiple uses of :map may be specified. Any binding occurring before the first use of :map are applied to the global keymap:

(use-package term
  :bind (("C-c t" . term)
         :map term-mode-map
         ("M-p" . term-send-up)
         ("M-n" . term-send-down)
         :map term-raw-map
         ("M-o" . other-window)
         ("M-p" . term-send-up)
         ("M-n" . term-send-down)))