TextMate-Syntax-Highlighting的问题

def syntax_highlight_and_markdown(text, options = {}) 
             text_pieces = text.split(/(<c0de>|<c0de lang="[A-Za-z0-9_-]+">|<c0de lang='[A-Za-z0-9_-]+'>|<\/c0de>)/) 
             in_pre = false 
             language = nil 
             text_pieces.collect do |piece| 
                 if piece =~ /^<c0de( lang=(["'])?(.*)\2)?>$/ 
                     language = $3 
                     in_pre = true 
                     nil 
                 elsif piece == "</c0de>" 
                     in_pre = false 
                     language = nil 
                     nil 
                 elsif in_pre 
                     code(piece.strip, :lang => language,:theme => "blackboard", :line_numbers => true) 
                 else 
                     markdown(piece, options) 
                 end 
             end 
         end 
            
         def markdown(text, options = {}) 
             if options[:strip] 
                 BlueCloth.new(strip_tags(text.strip)).to_html 
             else 
                 BlueCloth.new(text.strip).to_html 
             end 
         end