[xsl] Recursive Split

[Alice Ju-Hsuan Wei <ajwei@xxxxxxxxxxx>]

Hi,

 Does anyone know if it is possible to do recursive splitting of 
strings and output them with appropriate ids? I tried using 
substring-before and substring-after, but I can only be applied once, 
so when I have multiple elements I wanted to split, it does not provide 
the accurate output.

Here is my XML:

             <listItem>
                  <to_do xml:id="cheese">Cheddar Cheese</to_do>
              </listItem>
               <listItem>
                  <to_do xml:id="beef">Chuck Steak</to_do>
              </listItem>
               <listItem>
                  <to_do xml:id="vegetables">Brocololi, Beans,
Carrots</to_do>
              </listItem>
              <listItem>
                  <to_do xml:id="milk">Dean's Low Fat Milk 2%</to_do>
              </listItem>

 <do>
 <date>2007-11-14</date>
 <list>milk cheese vegetables beef</list>
 <limit_price>20</limit_price>
 <do>

 Current XSL:

<xsl:template name="do_list">
    <xsl:variable name="item" select="list"/>
    <xsl:variable name="tasks" select="substring-after($item, ' ')"/>
      <xsl:choose>
          <xsl:when test="contains($item,' '
                 <xsl:value-of select="id($item)"/>
                  </xsl:when>
          <xsl:otherwise>
              <xsl:apply-templates select="$item"/>
          </xsl:otherwise>
      </xsl:choose>
  </xsl:template>

 Intended Output in HTML:

    <ul>
                  <li>Cheddar Cheese</li>
                 <li>Chuck Steak</li>
                 <li>Brocololi, Beans, Carrots</li>
                 <li>Dean's Low Fat Milk 2%</li></ul>

  Is it possible to parse these elements in the XML recursively?

Thanks in advance.

Alice