ruby スクリプトが euc-jis-2004 決め打ちなのをオプションで utf-8 も可能に #27
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こうすれば
ruby -E utf-8
とruby- E euc-jis-2004
でどちらにも対応できますけど既定で euc-jis-2004 にする方法が分からないです
shebang を
ruby -E euc-jis-2004
にすると already set とかエラーが出るみたいですしどうしても互換性を残したければ、何かラッパーを作るしかないかも?