# File lib/bundler/vendor/thor/task.rb, line 97
    def handle_argument_error?(instance, error, caller)
      not_debugging?(instance) && error.message =~ /wrong number of arguments/ && begin
        saned = sans_backtrace(error.backtrace, caller)
        # Ruby 1.9 always include the called method in the backtrace
        saned.empty? || (saned.size == 1 && RUBY_VERSION >= "1.9")
      end
    end