From 3879e207fc9deee9f1dd2980c4555fa5f58bb56b Mon Sep 17 00:00:00 2001
From: Elara6331 <elara@elara.ws>
Date: Fri, 22 Dec 2023 15:45:28 -0800
Subject: [PATCH] Return an error if we encounter an unknown operator

---
 expr.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/expr.go b/expr.go
index e667261..62e6249 100644
--- a/expr.go
+++ b/expr.go
@@ -172,5 +172,5 @@ func (t *Template) performOp(a, b reflect.Value, op ast.Operator) (any, error) {
 			return false, nil
 		}
 	}
-	return false, nil
+	return false, ast.PosError(op, "unknown operator: %q", op.Value)
 }