normalize_paths (ActionController::Routing)

    # File lib/action_controller/routing.rb, line 295
          def normalize_paths(paths)
            # do the hokey-pokey of path normalization...
            paths = paths.collect do |path|
              path = path.
                gsub("//", "/").           # replace double / chars with a single
                gsub("\\\\", "\\").        # replace double \ chars with a single
                gsub(%r{(.)[\\/]$}, '\1')  # drop final / or \ if path ends with it

              # eliminate .. paths where possible
              re = %r{[^/\\]+[/\\]\.\.[/\\]}
              path.gsub!(re, "") while path.match(re)
              path
            end

            # start with longest path, first
            paths = paths.uniq.sort_by { |path| - path.length }
          end