string_into_safe_buffer

# File activesupport/lib/active_support/core_ext/string/output_safety.rb, line 216
      def string_into_safe_buffer(new_string, is_html_safe)
        new_safe_buffer = new_string.is_a?(SafeBuffer) ? new_string : SafeBuffer.new(new_string)
        unless is_html_safe
          new_safe_buffer.instance_variable_set :@html_unsafe, true
        end
        new_safe_buffer
      end