> although actually along a sibling axis you have quite hard to
> "accidentally" get multiple prefixes.
Not really. You just have to do something like this:
<xsl:template match="vc:changes"
xmlns:vc="http://acme.com/ns/version-control">
<vc:changes>
<xsl:copy-of select="*"/>
<vc:change date="{current-date()}">Changed by stylesheet XYZ</vc:change>
</vc:changes>
</xsl:template>
Existing elements will retain the prefix in the original document, the new
element will have the prefix used by the stylesheet author. Once you get two
sub-communities who prefer different prefixes (as with "xs" and "xsd")
you're going to end up with documents that mix the two.
Michael Kay
http://www.saxonica.com/
