Function xmlTextReaderXmlLang 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn xmlTextReaderXmlLang(
    reader: *mut XmlTextReader,
) -> *mut xmlChar

Return the xml:lang of the current node.

UPSTREAM-PARITY

Upstream xmlTextReaderXmlLang returns xmlNodeGetLang(node): the nearest xml:lang attribute on the node or an ancestor.

xmlChar *xmlTextReaderXmlLang(xmlTextReaderPtr reader);

Returns a newly allocated string (free with xmlFree) or NULL.

Safety

reader must be a valid pointer or NULL.