render_html

# File actionpack/lib/action_dispatch/middleware/public_exceptions.rb, line 34
    def render_html(status)
      found = false
      path = "#{public_path}/#{status}.#{I18n.locale}.html" if I18n.locale
      path = "#{public_path}/#{status}.html" unless path && (found = File.exist?(path))

      if found || File.exist?(path)
        render_format(status, 'text/html', File.read(path))
      else
        [404, { "X-Cascade" => "pass" }, []]
      end
    end