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Emacsでタブのおよび行末の無駄なホワイトスペースをハイライトする

Last updated at Posted at 2014-02-20

タブ、無駄なホワイトスペースを入力したくないときの設定

.emacs
(setq-default indent-tabs-mode nil)       ; インデントはタブではなくスペースを使用
(setq-default show-trailing-whitespace t) ; 行末の空白をハイライト
(add-hook 'font-lock-mode-hook            ; タブをハイライト
          (lambda ()
            (font-lock-add-keywords
             nil
             '(("\t" 0 'trailing-whitespace prepend)))))
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