Github user afs commented on a diff in the pull request:
https://github.com/apache/jena/pull/423#discussion_r189391486
--- Diff:
jena-arq/src/main/java/org/apache/jena/sparql/expr/nodevalue/NodeFunctions.java
---
@@ -254,28 +254,33 @@ public static String lang(Node node) {
}
// -------- langMatches
+ /** LANGMATCHES - first argument is a language string */
--- End diff --
It is a reminder that LANGMATCHEs, in SPARQL takes a language string, not
the literal with the language string, which catches people out sometime. I can
turn it into \@params.
---
