actionpack/lib/action_view/safe_buffer.rb


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module ActionView #:nodoc:
  class SafeBuffer < String
    def <<(value)
      if value.html_safe?
        super(value)
      else
        super(ERB::Util.h(value))
      end
    end

    def concat(value)
      self << value
    end

    def html_safe?
      true
    end

    def html_safe!
      self
    end

    def to_s
      self
    end
  end
end