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: step7_quote.rb
    path of file: ./repos/mal/impls/ruby.2
    
    the code of the file until where you have to start completion: require "readline"

require_relative "core"
require_relative "env"
require_relative "errors"
require_relative "printer"
require_relative "reader"

module Mal
  extend self

  def boot_repl!
    @repl_env = Env.new

    Core.ns.each do |k, v|
      @repl_env.set(k, v)
    end

    @repl_env.
    
  def quasiquote_list(mal)
    result = Types::List.new

    mal.reverse_each do |elt|
      if elt.is_a?(Types::List) && elt.first == Types::Symbol.for("splice-unquote")
        result = Types::List.new([
          Types::Symbol.for("concat"),
          elt[1],
          result
        ])
      else
        result = Types::List.new([
          Types::Symbol.for("cons"),
          quasiquote(elt),
          result
        ])
      end
    end