I use XSLT 3.0 a lot and many syntax variants of the latest drafts are not supported by oXygen and/or by Saxon 9.5.x which is used for the syntax validation. The red curlies underneath just about every line when I use for instance maps or other unsupported features greatly distract from writing XSLT...

There are many ways in XSLT you can do this. My preference would be to use a modified identity template, where you match upon the text nodes and replace the values you want replaced. <!-- XSLT 3.0: copies everything, unless matched --> <xsl:mode on-no-match="shallow-copy" /> <!-- only matc...