From d136fdbafa1727a83a7cd9015723a41d4f65e28c Mon Sep 17 00:00:00 2001
From: Rob Garrison <wowmotty@gmail.com>
Date: Mon, 17 Sep 2018 22:12:36 -0500
Subject: [PATCH] Allow including null in number/range variables

---
 js/usercss.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/js/usercss.js b/js/usercss.js
index 64a708a6..54d41526 100644
--- a/js/usercss.js
+++ b/js/usercss.js
@@ -222,7 +222,7 @@ var usercss = (() => {
         if (Array.isArray(state.value) && state.value.length) {
           // label may be placed anywhere
           result.units = (state.value.find(i => typeof i === 'string') || '').replace(/[\d.+-]/g, '');
-          const range = state.value.filter(i => typeof i === 'number');
+          const range = state.value.filter(i => typeof i === 'number' || i == null);
           result.default = range[0];
           result.min = range[1];
           result.max = range[2];