There is an interesting stylesheet I came across this morning where
some developer had declared two Xsl:variables one after the other with
the same name.
    <xsl:variable name = "foo">
   </xsl:variable>
  <xsl:variable name = "foo">
   </xsl:variable>
    Not sure why he did that, but to my surprise, it seems to be valid
in XSLT2 .. and as my expectations, it failed in XSLT1 saying two
variables cant have same name within the same scope..
   Is this right??

<xsl:variable name="s" select="@something"/>
<xsl:variable name="s" select="substring-before($s, ':')"/>
<xsl:variable name="s" select="substring-after($s, '/')"/>
<xsl:variable name="s" select="concat('(', $s, ')')"/>
<xsl:value-of select="$s"/>

Michael Kay
Saxonica