From 5b29aef5f3424e49956dfa2a67a9669608d01f4c Mon Sep 17 00:00:00 2001
From: Chris LaFreniere <40371649+chlafreniere@users.noreply.github.com>
Date: Fri, 25 Oct 2019 10:52:18 -0700
Subject: [PATCH] fix stdin cancel breaks notebook (#8012)

---
 src/sql/workbench/parts/notebook/browser/models/cell.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/sql/workbench/parts/notebook/browser/models/cell.ts b/src/sql/workbench/parts/notebook/browser/models/cell.ts
index ca185bd0ba..c52e41fe80 100644
--- a/src/sql/workbench/parts/notebook/browser/models/cell.ts
+++ b/src/sql/workbench/parts/notebook/browser/models/cell.ts
@@ -311,6 +311,10 @@ export class CellModel implements ICellModel {
 			// If cell is currently running and user clicks the stop/cancel button, call kernel.interrupt()
 			// This matches the same behavior as JupyterLab
 			if (this.future && this.future.inProgress) {
+				// If stdIn is visible, to prevent a kernel hang, we need to send a dummy input reply
+				if (this._stdInVisible && this._stdInHandler) {
+					this.future.sendInputReply({ value: '' });
+				}
 				this.future.inProgress = false;
 				await kernel.interrupt();
 				this.sendNotification(notificationService, Severity.Info, localize('runCellCancelled', "Cell execution cancelled"));