# File lib/haml/html.rb, line 208
208:       def to_haml(tabs, options)
209:         attrs = public_id.nil? ? ["", "", ""] :
210:           public_id.scan(/DTD\s+([^\s]+)\s*([^\s]*)\s*([^\s]*)\s*\/\//)[0]
211:         raise Haml::SyntaxError.new("Invalid doctype") if attrs == nil
212: 
213:         type, version, strictness = attrs.map { |a| a.downcase }
214:         if type == "html"
215:           version = ""
216:           strictness = "strict" if strictness == ""
217:         end
218: 
219:         if version == "1.0" || version.empty?
220:           version = nil
221:         end
222: 
223:         if strictness == 'transitional' || strictness.empty?
224:           strictness = nil
225:         end
226: 
227:         version = " #{version.capitalize}" if version
228:         strictness = " #{strictness.capitalize}" if strictness
229: 
230:         "#{tabulate(tabs)}!!!#{version}#{strictness}\n"
231:       end