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Nested colgroups and rowgroups

From: Jim Jewett <jimjjewett@gmail.com>
Date: Fri, 17 Jun 2005 15:33:11 -0400
Message-ID: <fb6fbf5605061712335ca55fbe@mail.gmail.com>
To: www-html@w3.org

[Also sent to www-html-editor]

It is fairly common to sort tabular data by multiple columns --
implicitly creating nested rowgroups.

Neither colgroup nor any of the rowgroup instantiations (tbody, thead,
tfoot) can nest.

In the past, this was needed for backwards compatibility -- colgroup
elements were implicitly closed by the next colgroup.  In XHTML 2.0,
all elements will have closing tags, so it is possible to distinguish
a nested colgroup from an adjacent one.  Given this, I believe nested
colgroups and (rowgroups) should be permitted.

-jJ
Received on Friday, 17 June 2005 19:33:14 UTC

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