Key Binding To Open Emacs Configuration File

What

Create a function open the emacs configuration file and binding a key to it.

Why

It is very frequently to open the emacs configuration file and add some more function since I am using a basic emacs(compare to space-emacs / doom emacs). Therefore, it is essential to have a keybaord shotcuts binding to this task, otherwise, you have to always type C-x f ~/.emacs.d/init.el RET, which is a little bit annoy.

How

Add below code block in the emacs configuration file.

;; Define a function to open init file
(defun edit-init-file()
  "edit init file helps to open the ~/.emacs/init.el file"
  (interactive)
  (find-file "~/.emacs.d/init.el"))

;; Binding a key to the function edit-init-file
(global-set-key (kbd "ESC M-i") 'edit-init-file)