Emacsで全角の数字を半角にしたい、というので、以下のように書いた。 (defun numerics-to-hankaku () (interactive) (tr '("０" "１" "２" "３" "４" "５" "６" "７" "８" "９") '("0" "1" "2" "3" "4" "5" "6" "7" "8" "9"))) (defun tr (before after) (g…