current_path (GetText::LocalePath)

    # File lib/gettext/locale_path.rb, line 102
        def current_path(lang)
          lang_candidates = lang.to_posix.candidates
          search_files = []

          lang_candidates.each do |tag|
            path = @locale_paths[tag.to_s]
            warn "GetText::TextDomain#load_mo: mo-file is #{path}" if $DEBUG
            return path if path
          end

          if $DEBUG
            warn "MO file is not found in"
            @locale_paths.each do |path|
              warn "  #{path[1]}"
            end
          end
          nil
        end