freeze_edge_version

# File railties/builtin/rails_info/rails/info.rb, line 38
      def freeze_edge_version
        if File.exist?(rails_vendor_root)
          begin
            File.readlines(File.join(rails_vendor_root,'REVISION')).first.strip
          rescue
            Dir[File.join(rails_vendor_root, 'TAG_*')].first.scan(/_(.+)$/).first.first rescue 'unknown'
          end
        end
      end