From d496052534bb4317373991098d15ddd5ccb8f566 Mon Sep 17 00:00:00 2001
From: Josh Goebel <me@joshgoebel.com>
Date: Wed, 2 Dec 2020 14:40:23 -0500
Subject: [PATCH] fix(latex) fix poly backtracking issue

---
 src/languages/latex.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/languages/latex.js b/src/languages/latex.js
index 0cadd1a09e..47b0636de8 100644
--- a/src/languages/latex.js
+++ b/src/languages/latex.js
@@ -172,7 +172,7 @@ export default function(hljs) {
   const BEGIN_ENV = function(envname, starts_mode) {
     return hljs.inherit(
       {
-        begin: '\\\\begin(?=\\s*\\r?\\n?\\s*\\{' + envname + '\\})',
+        begin: '\\\\begin(?=[ \t]*(\\r?\\n[ \t]*)?\\{' + envname + '\\})',
         keywords: {$pattern: /\\[a-zA-Z]+/, keyword: '\\begin'},
         relevance: 0,
       },