colspec/@colsep, @rowsep are not honored in table cell formatting

[ToshihikoMakita]

Following example does not generate non-border cell.

    <table>
        <title>Table VALIGN middle and bottom, colspec rowsep=0, colsep=0</title>
        <tgroup cols="2">
            <colspec colsep="0" colname="col1" colwidth="" colnum="1" rowsep="0"/>
            <colspec colsep="0" colname="col2" colwidth="" colnum="2" rowsep="0"/>
            <thead>
                <row>
                    <entry colname="col1">Description </entry>
                    <entry colname="col2">Symbol </entry>
                </row>
            </thead>
            <tbody>
                <row valign="middle">
                    <entry rotate="1" colname="col1"> @rotate=1 &amp; valign middle</entry>
                    <entry colname="col2">whole row with valign middle</entry>
                </row>
                <row>
                    <entry rotate="0" colname="col1">@rotate=0 greater than or equal to </entry>
                    <entry colname="col2">｜ </entry>
                </row>
                <row>
                    <entry colname="col1">less than or equal to: fn2 here with xref</entry>
                    <entry colname="col2">∥ (additional xref to fn2 - </entry>
                </row>
                <row>
                    <entry colname="col1">Omega for Ohms fn3 here without xref &amp; w/o Id</entry>
                    <entry colname="col2">з (additonal xref to fn1 - </entry>
                </row>
            </tbody>
        </tgroup>
    </table>

[ToshihikoMakita]

Fixed image