QLStephen, is a QuickLook plugin that lets you view plain text files without a file extension 投稿者:feed 2013/12/19 コメントをどうぞ (QLStephen, is a QuickLook plugin that lets you view plain text files without a file extension) 拡張子無しのファイルもQuickLookでテキスト形式と認識させて表示。