From d3ee5737062663588003995ab84c10a97c042051 Mon Sep 17 00:00:00 2001
From: Peter Ebden <peter.ebden@gmail.com>
Date: Tue, 6 Oct 2026 12:42:24 +0100
Subject: [PATCH] Suppress the initial update in plain display mode

---
 src/output/interactive_display.go | 9 +++++++++
 src/output/shell_output.go        | 4 +++-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/output/interactive_display.go b/src/output/interactive_display.go
index c9116940b..1b442912c 100644
--- a/src/output/interactive_display.go
+++ b/src/output/interactive_display.go
@@ -24,6 +24,7 @@ type displayer interface {
 	Update(targets []buildingTarget)
 	Close()
 	Frequency() time.Duration
+	ShowInitialUpdate() bool
 }
 
 func setupDisplayer(state *core.BuildState, progress Progress, plain bool) displayer {
@@ -81,6 +82,10 @@ func (d *plainDisplay) Frequency() time.Duration {
 
 func (d *plainDisplay) Close() {}
 
+func (d *plainDisplay) ShowInitialUpdate() bool {
+	return false
+}
+
 type interactiveDisplay struct {
 	state                                               *core.BuildState
 	progress                                            Progress
@@ -102,6 +107,10 @@ func (d *interactiveDisplay) Frequency() time.Duration {
 	return 50 * time.Millisecond
 }
 
+func (d *interactiveDisplay) ShowInitialUpdate() bool {
+	return true
+}
+
 func (d *interactiveDisplay) Update(targets []buildingTarget) {
 	d.maxRows, d.maxCols = cli.CurrentBackend.MaxDimensions()
 	d.moveToFirstLine()
diff --git a/src/output/shell_output.go b/src/output/shell_output.go
index 349929d62..5cd9d9f87 100644
--- a/src/output/shell_output.go
+++ b/src/output/shell_output.go
@@ -51,7 +51,9 @@ func MonitorState(state *core.BuildState, progress Progress, results <-chan *cor
 	t := time.NewTicker(displayer.Frequency())
 	defer t.Stop()
 	bt := newBuildingTargets(state, progress, plainOutput)
-	displayer.Update(bt.Targets())
+	if displayer.ShowInitialUpdate() {
+		displayer.Update(bt.Targets())
+	}
 loop:
 	for {
 		select {