From 6c2986484733b53056fe9977831b7dba821a2923 Mon Sep 17 00:00:00 2001
From: Daniel Imms <2193314+Tyriar@users.noreply.github.com>
Date: Wed, 2 Nov 2022 06:45:25 -0700
Subject: [PATCH] Add 1024 character limit to web links addon

Fixes #4250
---
 addons/xterm-addon-web-links/src/WebLinkProvider.ts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/addons/xterm-addon-web-links/src/WebLinkProvider.ts b/addons/xterm-addon-web-links/src/WebLinkProvider.ts
index 2f2ccddf..fafbb614 100644
--- a/addons/xterm-addon-web-links/src/WebLinkProvider.ts
+++ b/addons/xterm-addon-web-links/src/WebLinkProvider.ts
@@ -47,6 +47,12 @@ export class LinkComputer {
 
     const [line, startLineIndex] = LinkComputer._translateBufferLineToStringWithWrap(y - 1, false, terminal);
 
+    // Don't try if the wrapped line if excessively large as the regex matching will block the main
+    // thread.
+    if (line.length > 1024) {
+      return [];
+    }
+
     let match;
     let stringIndex = -1;
     const result: ILink[] = [];