# File lib/innate.rb, line 187
    def go_figure_root(backtrace, options)
      if root = options[:root]
        root
      elsif file = options[:file]
        File.dirname(file)
      elsif File.file?('start.rb')
        Dir.pwd
      else
        root = File.dirname(backtrace[0][/^(.*?):\d+/, 1])
        Log.warn "No explicit root folder found, assuming it is #{root}"
        root
      end
    end