From e9cd7af10e05ce04bd3559a3c027616c455bb1a7 Mon Sep 17 00:00:00 2001
From: Vinoth Kannan <vinothkannan@vinkas.com>
Date: Sat, 23 Dec 2017 23:44:57 +0530
Subject: [PATCH] FIX: IE not supporting regex negative lookbehind

---
 app/assets/javascripts/discourse/lib/to-markdown.js.es6 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/assets/javascripts/discourse/lib/to-markdown.js.es6 b/app/assets/javascripts/discourse/lib/to-markdown.js.es6
index 7a2bc370af8..2fd90c59e01 100644
--- a/app/assets/javascripts/discourse/lib/to-markdown.js.es6
+++ b/app/assets/javascripts/discourse/lib/to-markdown.js.es6
@@ -2,7 +2,7 @@ import parseHTML from 'discourse/helpers/parse-html';
 
 const trimLeft = text => text.replace(/^\s+/,"");
 const trimRight = text => text.replace(/\s+$/,"");
-const countPipes = text => text.match(/(?<!\\)\|/g).length;
+const countPipes = text => text.replace(/\\\|/,"").match(/\|/g).length;
 
 class Tag {
   constructor(name, prefix = "", suffix = "", inline = false) {