Re: string-length of all label attributes

//@label selects a node set

count() expects a node set and returns its size, so

> But count(//@label) works fine.

But if you use (any) function that expects a string and give it a node
set then it will sort the nodes into document order, and take the string
value of the first node as its argument.  (In XSLT2 draft this is an error
as often as not, but XSLT1 rarely generates run time errors)

so you get

> When I apply string-length(//@label) in the root I only get the length
> of the first attribute.

You might want
<xsl:variable name="x">
<xsl:for-each select="//@label">
<xsl:value-of select="."/>
</xsl:for-each>
</xsl:variable>
<xsl:value-of select="string-length($x)"/>

which would work but actually builds the (result tree fragment containing
the)  string consisting of the concatenation of all the labels which
might be expensive in terms of space if you really have lots of them.

An alternative would be a recursive template that walks over the tree
adding up the string length as it finds labels.

David

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