lib/mako/core.rb
def log_time
      Mako.logger.info 'Generating...'
      start_time = Time.now.to_f
      yield
      generation_time = Time.now.to_f - start_time
      Mako.logger.info "done in #{generation_time} seconds"
    end
def log_time
      Mako.logger.info 'Generating...'
      start_time = Time.now.to_f
      yield
      generation_time = Time.now.to_f - start_time
      Mako.logger.info "done in #{generation_time} seconds"
    end
Provides build time logging information and writes it to STDOUT.