Makes a deep copy of a sequence (typically streamed nodes, to allow navigation within the subtree rooted at each node). The zero-argument form applies the function to the context item.
copy-of() ➔ item()
There are no arguments
copy-of($input as item()*) ➔ item()*
The sequence to be copied
Links to W3C specifications
Available in XSLT 3.0. From Saxon 9.8, available in all editions. Implemented in Saxon-PE and Saxon-EE since Saxon 9.5.
Notes on the Saxon implementation
Available since Saxon 9.5 for use in XSLT 3.0. Since Saxon 9.6 the function is also made available in XQuery.
Since Saxon 9.7 the function can operate on any sequence of items (not just nodes).