XSLT tokenize - capturing delimiters

here is a piece of code in XSL that tokenizes text into chunks separated by interpolation and similar characters. I would like to ask if there is any way to capture the lines where the text has been marked, like a comma or a period, etc.

<xsl:stylesheet version="2.0" exclude-result-prefixes="xs xdt err fn" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:fn="http://www.w3.org/2005/xpath-functions" xmlns:err="http://www.w3.org/2005/xqt-errors" xmlns:xdt="http://www.w3.org/2005/xpath-datatypes">
<xsl:output method="xml" indent="yes"/>
<xsl:template match="GENERUJ">
    <TEXT>
        <xsl:variable name="text">
            <xsl:value-of select="normalize-space(unparsed-text(@filename, 'UTF-8'))" disable-output-escaping="yes"/>
        </xsl:variable>
        <xsl:for-each select="tokenize($text, '(\s+(&quot;|\(|\[|\{))|((&quot;|,|;|:|\s\-|\)|\]|\})\s+)|((\.|\?|!|;)&quot;?\s*)' )">
            <xsl:choose>
                <xsl:when test="string-length(.)&gt;0">
                    <FRAGMENT>
                        <CONTENT>
                            <xsl:value-of select="."/>
                        </CONTENT>
                        <LENGTH>
                            <xsl:value-of select="string-length(.)"/>
                        </LENGTH>
                    </FRAGMENT>
                </xsl:when>
                <xsl:otherwise>
                    <FRAGMENT_COUNT>
                        <xsl:value-of select="last()-1"/>
                    </FRAGMENT_COUNT>
                </xsl:otherwise>
            </xsl:choose>
        </xsl:for-each>
    </TEXT>
</xsl:template>

      

        
        
        
      

    

As you can see the CONTENTS, LENGTH tags generated, I would like to add one named SEPARATOR if you know what I mean. I couldn't find an answer to this on the internet and I'm just a beginner with xsl transformations, so I'm looking for a quick solution. Thank you in advance.