Joining strings with concat()

      <xsl:stylesheet
                  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                  version="2.0">
            <xsl:output  method="xml"
                        indent="yes"
                        omit-xml-declaration="yes"/>

            <xsl:template  match="/aaa">
                  <xxx>
                        <xsl:value-of  select="concat(ddd,eee)"/>
                  </xxx>
                  <yyy>
                        <xsl:value-of  select="concat(ccc,' ',ddd,' ',eee)"/>
                  </yyy>
                  <zzz>
                        <xsl:value-of  select="concat(name(*[3]),':',*[3])"/>
                  </zzz>
            </xsl:template>

      </xsl:stylesheet>

      <aaa>
            <bbb>How</bbb>
            <ccc>do</ccc>
            <ddd>you</ddd>
            <eee>do</eee>
      </aaa>

      <xxx>youdo</xxx>
      <yyy>do you do</yyy>
      <zzz>ddd:you</zzz>