gistfile1..rb

module Sinatra
  module AmbiguousRoutes
    def self.registered(app)
      app.class_eval do
        class << self
          private

          def route_with_ambiguity(verb, path, options = {}, &block)

            # don't modify routes that already defined with a format extension
            case path
            when Regexp
            else
              if path =~ /\..*$/
                pth, _, ext = path.split(/(\.)(.*)$/)
                path = /^#{pth}(\.#{ext}|)$/
              else
                path = /^#{path}(\.json|)$/
              end
            end
            route_without_ambiguity(verb, path, options, &block)
          end
          # alias_method :route_without_ambiguity, :route
          # alias_method :route, :route_with_ambiguity
          alias_method_chain :route, :ambiguity
        end

      end
    end

  end
end