add_wildcard_options

# File actionpack/lib/action_dispatch/routing/mapper.rb, line 219
          def add_wildcard_options(options, formatted, path_ast)
            # Add a constraint for wildcard route to make it non-greedy and match the
            # optional format part of the route by default
            if formatted != false
              path_ast.grep(Journey::Nodes::Star).each_with_object({}) { |node, hash|
                hash[node.name.to_sym] ||= /.+?/
              }.merge options
            else
              options
            end
          end