From 9111ebcd2b4d85f5e2b6f7855c07ec02b0c6df29 Mon Sep 17 00:00:00 2001
From: tophf <tophf@gmx.com>
Date: Sun, 7 Jan 2018 19:11:00 +0300
Subject: [PATCH] unget the unary token if got no term to finalize

---
 vendor-overwrites/csslint/parserlib.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/vendor-overwrites/csslint/parserlib.js b/vendor-overwrites/csslint/parserlib.js
index cc6fe2c1..34d0b734 100644
--- a/vendor-overwrites/csslint/parserlib.js
+++ b/vendor-overwrites/csslint/parserlib.js
@@ -4840,6 +4840,7 @@ self.parserlib = (() => {
       const unary = stream.match([Tokens.MINUS, Tokens.PLUS]) && stream._token;
 
       const finalize = (token, value) => {
+        if (!token && unary) stream.unget();
         if (!token) return null;
         if (token instanceof SyntaxUnit) return token;
         if (unary) {