From b1c684fc9f5b189e1df73e38eb53827725201e4a Mon Sep 17 00:00:00 2001
From: Zaid Abdulla <zaid@genieacs.com>
Date: Sat, 6 Oct 2018 00:47:02 -0700
Subject: [PATCH] Fix converting empty like pattern to regex

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

diff --git a/common/expression.js b/common/expression.js
index 49dcc62..c1b43bd 100644
--- a/common/expression.js
+++ b/common/expression.js
@@ -226,7 +226,7 @@ function likePatternToRegExp(pat, esc = "", flags = "") {
     "\\_": "."
   };
   let chars = expressionParser.parseLikePattern(pat, esc);
-  if (!chars.length) return new RegExp("", flags);
+  if (!chars.length) return new RegExp("^$", flags);
   chars = chars.map(c => convChars[c] || c);
   chars[0] = chars[0] === ".*" ? "" : "^" + chars[0];
   const l = chars.length - 1;