anchor.diff:      files = (`git ls-files` rescue nil).to_s.split(/\r?\n/)
       files.delete_if { |x| x.empty? }
       # When git-ls-files isn't available, creates a list from current files.
  -    unless $?.success? or files.size <= 0 then
  +    if !($?.success?) or files.size <= 0 then
         files =
           [ "README.rdoc", "README_DEV.rdoc", 
             "ChangeLog", "KNOWN_ISSUES.rdoc",
  
positive.code:                          'doc/Changes-1.3.rdoc' ]
          end
          rdoc_files.push "ChangeLog" unless rdoc_files.include?("ChangeLog")
          rdoc_files.collect { |x| x.dump }.join(",\n    ")
          ###### Above is executed in ERB environment ######
      %>
    ]
  
negative.code:             end
      end
      %><%= 
      files.sort.collect { |x| x.dump }.join(",\n    ")
         ###### Above is executed in ERB environment ######
      %>
    ]
  