interpolate_with_deprecated_syntax (I18n::Backend::Simple)

    # File lib/active_record/i18n_interpolation_deprecation.rb, line 12
            def interpolate_with_deprecated_syntax(locale, string, values = {})
              return string unless string.is_a?(String)

              string = string.gsub(/%d|%s/) do |s|
                instead = DEPRECATED_INTERPOLATORS[s]
                ActiveSupport::Deprecation.warn "using #{s} in messages is deprecated; use #{instead} instead."
                instead
              end

              interpolate_without_deprecated_syntax(locale, string, values)
            end