# File lib/yard/docstring_parser.rb, line 185
    def create_tag(tag_name, tag_buf = '')
      if tag_buf =~ /\A\s*(?:(\S+)\s+)?\(\s*see\s+(\S+)\s*\)\s*\Z/
        return create_ref_tag(tag_name, $1, $2)
      end

      if library.has_tag?(tag_name)
        @tags += [library.tag_create(tag_name, tag_buf)].flatten
      else
        log.warn "Unknown tag @#{tag_name}" +
          (object ? " in file `#{object.file}` near line #{object.line}" : "")
      end
    rescue Tags::TagFormatError
      log.warn "Invalid tag format for @#{tag_name}" +
        (object ? " in file `#{object.file}` near line #{object.line}" : "")
    end