# File lib/main/base.rb, line 484
    def fcall obj, m, *argv, &block
      m = obj.method m
      arity = m.arity
      if arity >= 0
        argv = argv[0, arity]
      else
        arity = arity.abs - 1
        argv = argv[0, arity] + argv[arity .. -1]
      end
      m.call *argv, &block
    end