# File lib/gettext/runtime/locale_path.rb, line 45
      def default_path_rules
        default_path_rules = []

        if ENV["GETTEXT_PATH"]
          ENV["GETTEXT_PATH"].split(/,/).each {|i|
            default_path_rules += ["#{i}/%{lang}/LC_MESSAGES/%{name}.mo", "#{i}/%{lang}/%{name}.mo"]
          }
        end
        default_path_rules += DEFAULT_RULES

        load_path = $LOAD_PATH.dup
        load_path.map!{|v| v.match(/(.*?)(\/lib)*?$/); $1}
        load_path.each {|path|
          default_path_rules += [
            "#{path}/data/locale/%{lang}/LC_MESSAGES/%{name}.mo",
            "#{path}/data/locale/%{lang}/%{name}.mo",
            "#{path}/locale/%{lang}/LC_MESSAGES/%{name}.mo",
            "#{path}/locale/%{lang}/%{name}.mo",
          ]
        }
        # paths existed only.
        default_path_rules = default_path_rules.select{|path|
          Dir.glob(path % {:lang => "*", :name => "*"}).size > 0}.uniq
        default_path_rules
      end