(set-language-environment "UTF-8")
(set-terminal-coding-system 'utf-8)
(set-keyboard-coding-system 'utf-8)
(set-clipboard-coding-system 'utf-8)
(set-buffer-file-coding-system 'utf-8)
(set-selection-coding-system 'utf-8)
(modify-coding-system-alist 'process "*" 'utf-8)

(setq default-buffer-file-coding-system 'utf-8)
(prefer-coding-system 'utf-8)