RE: Value of the variable

Interestingly, this question was asked about an hour ago on LinkedIn. The poster of that question gave an explicit input and an explicit output, so it was very easy to be able to answer.

t:\ftemp>type siddhi.xml
<book>key1, k<i>e</i>y2, key<b>3</b>, <u>ke</u>y4, <b>k</b>ey<i>5</i></book>

<xsl:template match="book">
  <!--preserve the book element and any of its attributes-->
  <xsl:copy>
    <xsl:copy-of select="@*"/>

    <!--determine all of the portions that make up the line-->
    <xsl:variable name="portions" as="element(portion)*">
      <xsl:apply-templates mode="make-portions"/>
    </xsl:variable>

    <!--those portions ending with a comma make up the new results-->
    <xsl:for-each-group select="$portions"
                        group-ending-with="*[@comma-end='true']">
      <!--surround each group of portions-->
      <key>
        <xsl:copy-of select="current-group()/node()"/>
      </key>
      <xsl:if test="position()!=last()">, </xsl:if>
    </xsl:for-each-group>
  </xsl:copy>
</xsl:template>

<!--make numerous portions from a given text node-->
<xsl:template match="text()" mode="make-portions">
  <xsl:for-each select="tokenize(.,',\s+')">
    <portion comma-end="{position()!=last()}">
      <xsl:value-of select="."/>
    </portion>
  </xsl:for-each>
</xsl:template>

<!--make a single portion from a given element node-->
<xsl:template match="*" mode="make-portions">
  <portion><xsl:copy-of select="."/></portion>
</xsl:template>

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