From f5b66775db75ed7416b20b4fd37766d41fe25fea Mon Sep 17 00:00:00 2001
From: meganrogge <merogge@microsoft.com>
Date: Wed, 2 Mar 2022 12:36:35 -0600
Subject: [PATCH] during buffer clear, don't dispose of markers on first line

---
 src/common/buffer/Buffer.ts | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/common/buffer/Buffer.ts b/src/common/buffer/Buffer.ts
index 7596fef3f..f7dc97d30 100644
--- a/src/common/buffer/Buffer.ts
+++ b/src/common/buffer/Buffer.ts
@@ -595,10 +595,14 @@ export class Buffer implements IBuffer {
         }
       }
     } else {
-      for (const marker of this.markers) {
-        marker.dispose();
+      // buffer has been cleared
+      // don't dispose of markers on the current line (0)
+      for (let i = 0; i < this.markers.length; i++) {
+        if (this.markers[i].line !== 0) {
+          this.markers[i].dispose();
+          this.markers.splice(i--, 1);
+        }
       }
-      this.markers = [];
     }
     this._isClearing = false;
   }