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@@ -48,6 +48,11 @@
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       #     config.action_view.sanitized_allowed_attributes = 'id', 'class', 'style'
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       #   end
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       # 
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+      # Please note that sanitizing user-provided text does not guarantee that the
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+      # resulting markup is valid (conforming to a document type) or even well-formed.
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+      # The output may still contain e.g. unescaped '<', '>', '&' characters and
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+      # confuse browsers.
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+      #
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       def sanitize(html, options = {})
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         self.class.white_list_sanitizer.sanitize(html, options)
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       end