is valid?      

Text formatted with Texy:

asdasd
asdads
aaaa
blah foo

Generated HTML code:

<table>
	<tbody>
		<tr>
			<th>asdasd<br>
			asdads</th>

			<th>aaaa</th>
		</tr>

		<tr>
			<th>blah</th>

			<th>foo</th>
		</tr>
	</tbody>
</table>

Verze Texy: 3.2.3 (konfigurace)