module Roda::RodaPlugins::ParamsCapturing::RequestMethods

def if_match(args)

the matchers.
any captures to the params based on the param capture names added by
the matching, but turn it back off before yielding to the block. Add
If all arguments are strings or symbols, turn on param capturing during 
def if_match(args)
  params = self.params
  if args.all?{|x| x.is_a?(String) || x.is_a?(Symbol)}
    pc = @_params_captures = []
  end
  super do |*a|
    if pc
      @_params_captures = nil
      pc.zip(a).each do |k,v|
        params[k] = v
      end
    end
    params['captures'].concat(a) 
    yield(*a)
  end
end