From a8b639a64fed9f00954b7f3fea18b723a6283317 Mon Sep 17 00:00:00 2001
From: Mark Amery <markrobertamery@gmail.com>
Date: Mon, 2 Sep 2024 19:57:16 +0100
Subject: [PATCH] Remove use of regex lookbehind to improve compat with old
 Safari versions (#550)

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

diff --git a/src/util/string.js b/src/util/string.js
index 7230a5fe..53cb7089 100644
--- a/src/util/string.js
+++ b/src/util/string.js
@@ -92,7 +92,7 @@ function overlapCount(a, b) {
  * Returns true if the string consistently uses Windows line endings.
  */
 export function hasOnlyWinLineEndings(string) {
-  return string.includes('\r\n') && !string.match(/(?<!\r)\n/);
+  return string.includes('\r\n') && !string.startsWith('\n') && !string.match(/[^\r]\n/);
 }
 
 /**