set_error

# File lib/getoptlong.rb, line 385
 def set_error(type, message)
 $stderr.print("#{0ドル}: #{message}\n") if !@quiet
 @error = type
 @error_message = message
 @canonical_names = nil
 @argument_flags = nil
 @rest_singles = nil
 @non_option_arguments = nil
 raise type, message
 end