From b748eca980c8fe30af10a995cc99938e70bf0d73 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Breitbart?= <jerch@rockborn.de>
Date: Fri, 24 May 2019 23:17:40 +0200
Subject: [PATCH] fix losing data behind RIS

---
 src/Terminal.ts | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/src/Terminal.ts b/src/Terminal.ts
index 8dd9f461..ff28ab02 100644
--- a/src/Terminal.ts
+++ b/src/Terminal.ts
@@ -2008,15 +2008,34 @@ export class Terminal extends EventEmitter implements ITerminal, IDisposable, II
    * ESC c Full Reset (RIS).
    */
   public reset(): void {
+    /**
+     * Since _setup handles a full terminal creation, we have to carry forward
+     * a few things that should not reset.
+     */
     this.options.rows = this.rows;
     this.options.cols = this.cols;
     const customKeyEventHandler = this._customKeyEventHandler;
     const inputHandler = this._inputHandler;
     const cursorState = this.cursorState;
+    const writeBuffer = this.writeBuffer;
+    const writeBufferUtf8 = this.writeBufferUtf8;
+    const writeInProgress = this._writeInProgress;
+    const xoffSentToCatchUp = this._xoffSentToCatchUp;
+    const userScrolling = this._userScrolling;
+
     this._setup();
+
+    // reattach
     this._customKeyEventHandler = customKeyEventHandler;
     this._inputHandler = inputHandler;
     this.cursorState = cursorState;
+    this.writeBuffer = writeBuffer;
+    this.writeBufferUtf8 = writeBufferUtf8;
+    this._writeInProgress = writeInProgress;
+    this._xoffSentToCatchUp = xoffSentToCatchUp;
+    this._userScrolling = userScrolling;
+
+    // do a full screen refresh
     this.refresh(0, this.rows - 1);
     if (this.viewport) {
       this.viewport.syncScrollArea();