gistfile1.rb

module Faxonline
  class MultiLogger
    def initialize(*loggers)
      @loggers = loggers.collect do |logger|
        if logger.is_a?(Logger)
          logger
        else
          Logger.new(logger)
        end
      end
    end

    def method_missing(signature, *args)
      @loggers.collect { |l| l.method(signature).call(*args) }
    end

    def respond_to?(signature)
      @loggers.all? { |l| l.respond_to?(signature) }
    end
  end
end

# describe Faxonline::Multilogger
# --x-- snip

@logger = Faxonline::MultiLogger.new($>, STDERR)
@logger.level = Logger::DEBUG

@logger.info  "started"
@logger.debug "debugging"