Is it possible for a single element to have two values for
one attribute?
No.
For example (two total guesses for <e>)
<x>
<e value="1|2">Some text</e>
<e value="1" value="2">Some text</e>
</x>
In your first example the attribute has a single value, "1|2". You can
interpret that value any way you like. If you want the value of the
attribute to be a list then it's more common (and supported by XML
Schema) to use a space as the separator.
Or is the only solution to double up on data like this (as
one example)
<x>
<e value="1">Some text</e>
<e value="2">Some text</e>
</x>
Holding data redundantly is a bad idea. A much better solution is to
switch from using attributes to using child elements.
I can't quite see what this has to do with XSLT?
Michael Kay
XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list