An output formatter used internally by the lexer.

Namespace
Methods
D
Constants
D_NOMSG = NoMsgNotifier.new # :nodoc:
 
Class Public methods
def_notifier(prefix = "", output_method = StdioOutputMethod.new)

Define a new Notifier output source, returning a new CompositeNotifier with the given prefix and output_method.

The optional prefix will be appended to all objects being inspected during output, using the given output_method as the output source. If no output_method is given, StdioOuputMethod will be used, and all expressions will be sent directly to STDOUT without any additional formatting.

Source: show | on GitHub 

# File lib/irb/notifier.rb, line 32
def def_notifier(prefix = "", output_method = StdioOutputMethod.new)
  CompositeNotifier.new(prefix, output_method)
end