fix semantics for empty feature lists

* allow FeatureList to parse empty input and return empty list
* if an empty feature list block is specified in a rank-profile,
  trigger that we no longer get the implicit inheritance

1 files changed, 1 insertions, 1 deletions

diff --git a/searchlib/src/main/javacc/RankingExpressionParser.jj b/searchlib/src/main/javacc/RankingExpressionParser.jj
index 591f0eb8b37..97aa42f79c9 100755
--- a/searchlib/src/main/javacc/RankingExpressionParser.jj
+++ b/searchlib/src/main/javacc/RankingExpressionParser.jj
@@ -177,7 +177,7 @@ List<ReferenceNode> featureList() :
     ReferenceNode exp;
 }
 {
-    ( ( exp = feature() { ret.add(exp); } )+ <EOF> )
+    ( ( exp = feature() { ret.add(exp); } )* <EOF> )
     { return ret; }
 }