When using a doctype, elements are rendered with default attribute values
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Key: TAP5-1044
URL: https://issues.apache.org/jira/browse/TAP5-1044
Project: Tapestry 5
Issue Type: Bug
Components: tapestry-core
Affects Versions: 5.1.0.5
Reporter: Paul Field
It's easiest to see this with an example:
--------------------
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd";>
<html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_1_0.xsd";>
<body>
<table>
<tbody>
<tr>
<th>x</th>
</tr>
</tbody>
</table>
</body>
</html>
--------------------
Will render the table row as:
<tr><th rowspan="1" colspan="1">x</th></tr>
Notice the rowspan and colspan attributes have appeared.
If you remove the <!DOCTYPE> then the <th> renders without the rowspan/colspan.
I believe these default values are coming from the DTD. It's not a problem for
the functionality of the page, but it does add to the size of HTML generated
(particularly as this affects table cells, of which there are often many in a
page).
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