Emacs in Insert Mode

;; Neat way of getting all Emacs functionality in Evil's insert mode

(defun with-evil-mode (mode key-behavior-pairs)
  (mapcar #'(lambda (pair)
              (define-key
                mode
                (car pair)
                (cdr pair)))
          key-behavior-pairs))

(setcdr evil-insert-state-map nil)
(with-evil-mode evil-insert-state-map
                '(
                  ([(control f10)] . evil-paste-from-register)
                  ([(control f11)] . evil-copy-from-above)
                  ([(control f12)] . evil-copy-from-below)
                  ([escape]        . evil-normal-state)))

;; If you want this in Spacemacs just insert the above
;; into your .spacemacs file here:

;; (defun dotspacemacs/config ()
;;   ...
;;   (setcdr evil-insert-state-map nil)
;;   (with-evil-mode evil-insert-state-map
;;                '(
;;                  ([(control f10)] . evil-paste-from-register)
;;                  ([(control f11)] . evil-copy-from-above)
;;                  ([(control f12)] . evil-copy-from-below)
;;                  ([escape]        . evil-normal-state)))
;;  ...
;; )