Saxon

<?xml version="1.0" encoding="UTF-8"?>

<root>

<test>document-uri(/): file:/Users/Stf/Documents/trash/file-exists.xsl: false</test>

<test>native path: /Users/Stf/Documents/trash/file-exists.xsl: true</test>

<test>file:path-to-native(): /Users/Stf/Documents/trash/Users/Stf/Documents/trash/file-exists.xsl: false</test>

</root>