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: text.rb
    path of file: ./repos/artichoke/artichoke-backend/vendor/ruby/lib/rubygems
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

##
# A collection of text-wrangling methods

module Gem::Text

  ##
  # Remove any non-printable characters and make the text suitable for
  # printing.
  def clean_text(text)
    text.gsub(/[\000-\b\v-\f\016-\037\177]/, ".".freeze)
  end

  def truncate_text(text, description, max_length = 100_000)
    raise ArgumentError, "max_length must be positive" unless max_length > 0
    return text if text
    
  def levenshtein_distance(str1, str2)
    n = str1.length
    m = str2.length
    return m if n.zero?
    return n if m.zero?

    d = (0..m).to_a
    x = nil

    # to avoid duplicating an enumerable object, create it outside of the loop
    str2_codepoints = str2.codepoints

    str1.each_codepoint.with_index(1) do |char1, i|
      j = 0
      while j < m
        cost = (char1 == str2_codepoints[j]) ? 0 : 1
        x = min3(
          d[j + 1] + 1, # insertion
          i + 1,      # deletion
          d[j] + cost # substitution
        )
        d[j] = i
        i = x

        j += 1
      end
      d[m] = x
    end