how to enable UTF-8 encoding

http://yoo2080.wordpress.com/2013/09/09/how-to-enable-unicode-encoding-lexical-scope-and-cl-functions-in-an-emacs-lisp-file/

1. how to enable UTF-8 encoding

In order to be able to use Unicode characters (in strings or comments) in your init file, visit the init file, then invoke the command add-file-local-variable-prop-line to add the file local variable coding with utf-8 as its value.

M-x add-file-local-variable-prop-line RET coding RET utf-8 RET

=> ;;; -*- coding: utf-8; -*-