From 04f934ab04e6cf23b27380c58628b0ca34ca1c32 Mon Sep 17 00:00:00 2001
From: Celestino Amoroso <celestino.amoroso@gmail.com>
Date: Sat, 20 Apr 2024 05:38:00 +0200
Subject: [PATCH] 'nil' keyword added

---
 symbol.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/symbol.go b/symbol.go
index b05e560..9f9f152 100644
--- a/symbol.go
+++ b/symbol.go
@@ -90,6 +90,7 @@ const (
 	SymKwBut
 	SymKwFunc
 	SymKwBuiltin
+	SymKwNil
 )
 
 var keywords map[string]Symbol
@@ -103,5 +104,6 @@ func init() {
 		"FUNC":    SymKwFunc,
 		"NOT":     SymKwNot,
 		"OR":      SymKwOr,
+		"NIL":     SymKwNil,
 	}
 }