You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: hexdiff.rb
    path of file: ./repos/grinder/node/lib/metasm/misc
    
    the code of the file until where you have to start completion: #!/usr/bin/env ruby
#    This file is part of Metasm, the Ruby assembly manipulation suite
#    Copyright (C) 2006-2009 Yoann GUILLOT
#
#    Licen
    
def show(pfx, str)
	loop do
		if str.length > 79
			len = 79 - str[0...79][/\S+$/].to_s.length
			len = 79 if len == 0
			puts pfx + str[0...len]
			str = str[len..-1]
		else
			puts pfx + str
			break
		end
	end