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: enc-unicode.rb
    path of file: ./repos/jruby/test/tool
    
    the code of the file until where you have to start completion: #!/usr/bin/env ruby

# Creates the data structures needed by Oniguruma to map Unicode codepoints to
# property names and POSIX character classes
#
# To use this, get UnicodeData.txt, Scripts.txt, PropList.txt,
# PropertyAliases.txt, PropertyValueAliases.txt, DerivedCoreProperties.txt,
# DerivedAge.txt and Blocks.txt  from unicode.org.
# (h
    
def parse_GraphemeBreakProperty(data)
  current = nil
  cps = []
  ages = []
  data_foreach('auxiliary/GraphemeBreakProperty.txt') do |line|
    if /^# Total code points: / =~ line
      constname = constantize_Grapheme_Cluster_Break(current)
      data[constname] = cps
      make_const(constname, cps, "Grapheme_Cluster_Break=#{current}")
      ages << current
      cps = []
    elsif /^([0-9a-fA-F]+)(?:\.\.([0-9a-fA-F]+))?\s*;\s*(\w+)/ =~ line
      current = $3
      $2 ? cps.concat(($1.to_i(16)..$2.to_i(16)).to_a) : cps.push($1.to_i(16))
    end
  end