module Docs  class Lua < UrlScraper    self.type = 'lua'    self.root_path = 'manual.html'     html_filters.push 'lua/clean_html', 'lua/entries'     options[:skip_links] = true     options[:attribution] = <<-HTML      &copy; 1994&ndash;2017 Lua.org, PUC-Rio.<br>      Licensed under the MIT License.    HTML     version '5.3' do      self.release = '5.3.4'      self.base_url = 'https://www.lua.org/manual/5.3/'    end     version '5.2' do      self.release = '5.2.4'      self.base_url = 'https://www.lua.org/manual/5.2/'    end     version '5.1' do      self.release = '5.1.5'      self.base_url = 'https://www.lua.org/manual/5.1/'    end     def get_latest_version(opts)      doc = fetch_doc('https://www.lua.org/manual/', opts)      doc.at_css('p.menubar > a').content    end  endend