>I am trying to write some XSLT to do the following:
>
>1. start at element E
>2. add all its attributes to the output
>3. move to E's parent, EP
>4. add to the output all those attributes
>   of EP that do not have the same name as
>   as an attribute already added to the output
>5. move to EP's parent and so on collecting
>   new attributes until I've reached the last
>   ancestor of P.

this is a ___lot___ easier than you think:-)

<xsl:copy-of select="ancestor-or-self::*/@*"/>

does exactly that.

David

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