From 9f562f536afc83c9fa6eb6e018c174af390e9930 Mon Sep 17 00:00:00 2001
From: Daniel Buckley <4968240+dannbuckley@users.noreply.github.com>
Date: Mon, 9 Jun 2025 07:40:45 -0600
Subject: [PATCH] Change function argument list to optional group

---
 cql2/standard/schema/cql2.bnf | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cql2/standard/schema/cql2.bnf b/cql2/standard/schema/cql2.bnf
index cbdb7294..658a8281 100644
--- a/cql2/standard/schema/cql2.bnf
+++ b/cql2/standard/schema/cql2.bnf
@@ -352,7 +352,7 @@ identifierStart = "\x003A"              # colon
 #=============================================================================#
 # Definition of a FUNCTION
 #=============================================================================#
-function = identifier "(" {argumentList} ")";
+function = identifier "(" [argumentList] ")";
 
 argumentList = argument [ { "," argument } ];