From d9453149e0dc159a435bf9434f458b9aacdb0fe1 Mon Sep 17 00:00:00 2001
From: vonhyou <vonhyou@yeah.net>
Date: Thu, 15 Apr 2021 01:01:03 +0800
Subject: [PATCH] bugfix......

---
 prol.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/prol.rb b/prol.rb
index 00ab23f..9f9c5b2 100644
--- a/prol.rb
+++ b/prol.rb
@@ -27,7 +27,7 @@ module Lisp
     lst
   end
 
-  def self.read_tokens(tokens, lst = [])
+  def self.read_tokens(tokens)
     # read expressions from token
     raise SyntaxError, 'Unexpected EOF' if tokens.empty?