evil mode - emacs, narrow-to-defun, hs-show-block -

this question has answer here:

• why emacs functions not available via `m-x`? 1 answer

i have defined following:

(defun narrow-into []   (narrow-to-defun)   (hs-show-block)) (define-key evil-normal-state-map (kbd "zi") 'narrow-into) 

my goal

the goal can open file, hit "zi", , (1) narrow current defn , (2) open editing.

my problem

when try run it, "wrong type argument: commandp, narrow-into"

question

what doing wrong , how fix it?

you need declare function interactive if want call interactively. explains error getting. other that, brackets should parens:

(defun narrow-into ()   (interactive)   (narrow-to-defun)   (hs-show-block))