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: render.rb
    path of file: ./repos/grinder/node/lib/metasm/metasm/cpu/x86_64
    
    the code of the file until where you have to start completion: #    This file is part of Metasm, the Ruby assembly manipulation suite
#    Copyright (C) 2006-2009 Yoann GUILLOT
#
#    Licence is LGPL, see LICENCE in the top-level directory


require 'metasm/cpu/x86_64/opcodes'
require 'metasm/render'

module Metasm
class X86_64
	def gui_hilight_word_regexp_init
		ret = {}

		%w[a b c d].each { |r|
			ret["#{r}l"] = "[re]?#{r}x|#{r}l"
			ret["#{r}h"] = "[re]?#{r}x|#{r}h"
			ret["#{r}x"] = r
    
	def gui_hilight_word_regexp_init
		ret = {}

		%w[a b c d].each { |r|
			ret["#{r}l"] = "[re]?#{r}x|#{r}l"
			ret["#{r}h"] = "[re]?#{r}x|#{r}h"
			ret["#{r}x"] = ret["e#{r}x"] = ret["r#{r}x"] = "[re]?#{r}x|#{r}[hl]"
		}

		%w[sp bp si di].each { |r|
			ret["#{r}l"] = ret[r] = ret["e#{r}"] = ret["r#{r}"] = "[re]?#{r}|#{r}l"
		}

		(8..15).each { |i|
			r = "r#{i}"
			ret[r+'b'] = ret[r+'w'] = ret[r+'d'] = ret[r] = "#{r}[bwd]?"
		}

		ret['eip'] = ret['rip'] = '[re]ip'

		ret
	end