# File lib/fast_gettext/mo_file.rb, line 28
    def pluralisation_rule
      #gettext uses 0 as default rule, which would turn off all pluralisation, very clever...
      #additionally parsing fails when directly accessing po files, so this line was taken from gettext/mofile
      (@data['']||'').split("\n").each do |line|
        return lambda{|n|eval($2)} if /^Plural-Forms:\s*nplurals\s*\=\s*(\d*);\s*plural\s*\=\s*([^;]*)\n?/ =~ line
      end
      nil
    end