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[xsl] Counting Characters and Words

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Hello dear XSL-List reader

i'm trying to achieve the following:

-count number of characters in different elements and print the sum of all

<xsl:for-each select"paragraph">
	<!--number of chars only in this paragraph-->
	<xsl:value-of select"string-length(.)"/>
</xsl:for-each>

<!-- i should have the sum here.. -->

as we know, the value of variables can't be changed after initialisation to avoid side-effects. so i cannot make a loop over the elements and add the result of string-length(..) to a var.
is there way to do it? i thought of concatenating first all element contents to one, and then call string-length(..) on this element. how can i concatenate an unknown number of elements (text) to one string? or would named-templates help?

any help is highly appreciated, thanks

thomas



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