verbose?

# File lib/irb/context.rb, line 236
    def verbose?
      if @verbose.nil?
        if defined?(ReadlineInputMethod) && @io.kind_of?(ReadlineInputMethod)
          false
        elsif !STDIN.tty? or @io.kind_of?(FileInputMethod)
          true
        else
          false
        end
      else
        @verbose
      end
    end