From 2945b041eae7c2a57e531e4817c37bb1fef9d9c8 Mon Sep 17 00:00:00 2001
From: nnposter <nnposter@e0a8ed71-7df4-0310-8962-fdc924857419>
Date: Tue, 5 Feb 2019 01:19:15 +0000
Subject: [PATCH] Boolean values are legitimate keys

---
 nselib/tableaux.lua | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nselib/tableaux.lua b/nselib/tableaux.lua
index 59fd7d40e..ae54e8921 100644
--- a/nselib/tableaux.lua
+++ b/nselib/tableaux.lua
@@ -81,7 +81,7 @@ end
 function keys(t)
   local ret = {}
   local k, v = next(t)
-  while k do
+  while k ~= nil do
     ret[#ret+1] = k
     k, v = next(t, k)
   end