One general Question: If we can't change xsl:variable, then why it is
named variable? is should be xsl:constant.
the use of the word "variable" matches its original use in mathematics
not the slightly strange use in imperative programming languages
that allow constructs such as
x = x + 1
but don't allow you to subtract x from both sides of that equation and
deduce
0 = 1
something like
<xsl:for-each select="Tag[starts-with(@value,'grade:')]">
<xsl:value-of select="substring-after(@value,'grade:')"/>
<xsl:text> </xsl:text>
</xsl:for-each> from grade
<xsl:for-each select="Tag[starts-with(@value,'sub:')]">
<xsl:value-of select="substring-after(@value,'sub:')"/>
<xsl:text> </xsl:text>
</xsl:for-each> from sub
seems to answer your request. note that not only do you not need to
update a variable, you don't need a variable at all.
David
--
http://www.dcarlisle.demon.co.uk/matthew
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