docs: kdoc: Fix pdfdocs build for tools

            yield line[t[0]:t[2]]

    def sub(self, regex, sub, line, count=0):

        """

        r"""

        This is similar to re.sub:

        It matches a regex that it is followed by a delimiter,

        replacing occurrences only if all delimiters are paired.

        if r'\1' is used, it works just like re: it places there the

        matched paired data with the delimiter stripped.

        if the sub argument contains::

            r'\1'

        it will work just like re: it places there the matched paired data

        with the delimiter stripped.

        If count is different than zero, it will replace at most count

        items.