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Nginxが謎のエラーを吐いたのでEmacsで解決した

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##問1:以下のnginx.confがエラーとなる理由を指摘せよ。(3点)

スクリーンショット 2014-10-02 23.09.05.png

##答え:
9行目の一見スペースに見える奴がその実\ufffc。

っていうふざけた事象に遭遇した。こんなん判るわけないのでもともと入れてたEmacsのwhite spaceで見えるようにした。

init.el
(setq whitespace-display-mappings
      '(
        (space-mark ?\u3000 [?\u3000])
        (space-mark ?\ufffc [?_])
        ;; WARNING: the mapping below has a problem.
        ;; When a TAB occupies exactly one column, it will display the
        ;; character ?\xBB at that column followed by a TAB which goes to
        ;; the next TAB column.
        ;; If this is a problem for you, please, comment the line below.
        (tab-mark ?\t [?\u00BB ?\t] [?\\ ?\t])))

(setq whitespace-space-regexp "\\([\u3000\ufff9-\ufffc]+\\)")
(set-face-foreground 'whitespace-space "cyan")
(set-face-background 'whitespace-space "cyan")

スクリーンショット 2014-10-02 23.12.27.png

これでもう\ufff9-\ufffcに怯えることもなくなった。

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