lang

The lang() function tests whether the language of a given node, as defined by the xml:lang attribute, corresponds to the language supplied as an argument.

For example, if the node is the element <para lang="fr-CA"> (indicating Canadian French), then the expression «lang('fr') » returns true .

Argument	Data Type	Meaning
language	xs:string	The language being tested
node (optional)	node()	The node whose language is being tested. If the argument is omitted, the function applies to the context node
Result	x s:boolean	true if the language of the context node is the same as, or a sublanguage of, the language being tested