Can anyone account for the behavior exhibited by the position function in a
predicate in the following code sample:
<xsl:variable name="x" select="'A', 'B', 'C'" as="xs:string*"/>
<xsl:variable name="y" select="'a', 'b', 'c'" as="xs:string*"/>
<xsl:for-each select="$x">
<xsl:variable name="pos" select="position()"/>
<xsl:message select="position()"/>
<xsl:message select="., $y[position()]"/>
<xsl:message select="., $y[$pos]"/>
</xsl:for-each>
As the output below shows, when the value of position is stored in a
variable and the variable is used in a predicate, you get what you would
expect, the selection of a single item corresponding to the current
position. But when position() is used directly in the predicate, it returns
all the items in the sequence:
[Saxon-PE] 1
[Saxon-PE] A a b c
[Saxon-PE] A a
[Saxon-PE] 2
[Saxon-PE] B a b c
[Saxon-PE] B b
[Saxon-PE] 3
[Saxon-PE] C a b c
[Saxon-PE] C c
Any ideas, or is this simply a bug?
Mark
