Ben Stover schrieb am 09.12.2009 um 19:38:00 (+0100):
> Assume a template matches a input tag like
> 
> <aaa>(0 or more whitespaces)</aaa>
> 
> How can I test if this node contains a non-whitespace value?

Use normalize-space():

<xsl:template match="aaa[normalize-space()]"> ...

-- 
Michael Ludwig