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[QUOTE="Jean-François Michaud, post: 3475556"]
Context:

I'm trying to compare XML tree fragments and I'm doing so by
outputting the attributes of each element in the tree and outputting
it to a string then normalizing the strings. Then I'm doing a contains
of the current string against the following-sibling::* to determine if
we have duplicates. If we have a duplicate, we move to the next item,
if there is no duplicate, we output the small tree.

I'm hitting a completely ridiculous problem that I can't wrap my head
around. I spend easily 2 hours trying to understand why this happened
yesterday and I'm about to punch the computer. When I output a string
that's not directly tied to the logic (or at least apparently not tied
to the logic), the logic works. When I remove the string output, the
logic stops working. Argh!

Here's the XSLT snippet

<xsl:template match="item-wrapper" mode="string">

<xsl:variable name="current">
      <xsl:apply-templates mode="string" />
    </xsl:variable>

<xsl:variable name="rest">
      <xsl:apply-templates select="following-sibling::*"
mode="string" />
    </xsl:variable>

<xsl:variable name="current-normalized">
      <xsl:value-of select="normalize-space($current)" />
    </xsl:variable>

<xsl:variable name="rest-normalized">
      <xsl:value-of select="normalize-space($rest)" />
    </xsl:variable>

<xsl:choose>
      <xsl:when test="contains($rest-normalized, $current-
normalized)">
        <duplicate/>
      </xsl:when>
      <xsl:otherwise>
        <noproblem/>
      </xsl:otherwise>
    </xsl:choose>
  </xsl:template>

When <xsl:value-of select="$current-normalized"/> is not commented
out, I get the string representation of the XML tree in a normalized
form in the output for each item and the correct <duplicate/> and
<noproblem/> get outputted in the correct location after the
normalized strings. When I comment out the <xsl:value-of
select="$current-normalized"/>, the normalized current string, as
expected, stops being outputted, but all my outputs are <noproblem/>.
What the hell? What am I missing here?

Regards
Jean-Francois Michaud
[/QUOTE]

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