Re: how to avoid generating an < empty element />

but ideally it should output the langSet for any language, so I tried replacing the code above with

<xsl:for-each select="langSet">
<xsl:copy-of select="current()"/>
</xsl:for-each>

That's equivalent to

<xsl:copy-of select="langSet"/>

but more verbose.

However, the format is akward, with one blank line between every two lines of contents,

add

<xsl:strip-space eleemnts="*"/>

to lose white space from the input and

<xsl:output indent="yes"/>

to add more appropriate space to the output.

and things will probably turn out OK.

David

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