}

        double start_offset = offset + span.x_start + _characters[char_index].x;

        Geom::PathVector pathv = path.MakePathVector();

        if (pathv.empty()) {

            return;

        }

        if (pathv[0].closed()) {

            start_offset = const_cast<Path&>(path).Length() + start_offset;

        }

        double cluster_width = 0.0;

        size_t const current_cluster_glyph_index = _characters[char_index].in_glyph;

        for (size_t glyph_index = current_cluster_glyph_index ; glyph_index < next_cluster_glyph_index ; glyph_index++)

        }

        int unused = 0;

        Path::cut_position *cut_pos = path->CurvilignToPosition(1, &offset, unused);

        if (cut_pos) {

            Geom::Point tangent;

            path->PointAndTangentAt(cut_pos[0].piece, cut_pos[0].t, midpoint, tangent);

        }

    } else {

        std::cerr << "sp_textpath_to_text: no path" << std::endl;

    }