Returns the value of a system property.
system-property($arg as xs:string) ➔ xs:string
The name of the system property required
Links to W3C specifications
Notes on the Saxon implementation
As well as the standard system properties defined in the XSLT namespace, the Saxon implementation will return the value of a Java system property (e.g. as set using -X on the Java VM invocation) if the name is unprefixed. It does NOT return the values of operating system environment variables.
More specifically, if the argument is a name in no namespace, that is, if the name is
unprefixed, then the name is taken to refer to a Java system property, and the value of
that property is returned if it exists. For example, on a Windows platform,
system-property('file.separator') returns "\". This can be used to obtain
information from the environment, and is especially useful in conjunction with
use-when conditional compilation.