From 48b150beff0e25f3565d51b630cf4349e6ad4ec4 Mon Sep 17 00:00:00 2001
From: Maxime CLEMENT <maxime.clement@docker.com>
Date: Wed, 18 May 2022 08:54:25 +0200
Subject: [PATCH] fix: prevent flickering prompt when pulling same image from N
 services

Signed-off-by: Maxime CLEMENT <maxime.clement@docker.com>
---
 pkg/progress/tty.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pkg/progress/tty.go b/pkg/progress/tty.go
index 25cb7c78..a94d659d 100644
--- a/pkg/progress/tty.go
+++ b/pkg/progress/tty.go
@@ -83,7 +83,10 @@ func (w *ttyWriter) Event(e Event) {
 		last.Status = e.Status
 		last.Text = e.Text
 		last.StatusText = e.StatusText
-		last.ParentID = e.ParentID
+		// allow set/unset of parent, but not swapping otherwise prompt is flickering
+		if last.ParentID == "" || e.ParentID == "" {
+			last.ParentID = e.ParentID
+		}
 		w.events[e.ID] = last
 	} else {
 		e.startTime = time.Now()