From e28f5aa45baf20ffdba469e11a998d3016c8cb42 Mon Sep 17 00:00:00 2001
From: Junegunn Choi <junegunn.c@gmail.com>
Date: Sun, 11 Aug 2024 14:48:52 +0900
Subject: [PATCH] Make sure preview command is not run before Terminal is ready

---
 src/terminal.go | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/terminal.go b/src/terminal.go
index bbccf1c6..29df02b2 100644
--- a/src/terminal.go
+++ b/src/terminal.go
@@ -382,6 +382,7 @@ const (
 	reqRedrawPreviewLabel
 	reqClose
 	reqPrintQuery
+	reqPreviewReady
 	reqPreviewEnqueue
 	reqPreviewDisplay
 	reqPreviewRefresh
@@ -3469,6 +3470,7 @@ func (t *Terminal) Loop() error {
 		go func() {
 			var version int64
 			stop := false
+			t.previewBox.WaitFor(reqPreviewReady)
 			for {
 				var items []*Item
 				var commandTemplate string
@@ -3497,6 +3499,9 @@ func (t *Terminal) Loop() error {
 				if stop {
 					break
 				}
+				if items == nil {
+					continue
+				}
 				version++
 				// We don't display preview window if no match
 				if items[0] != nil {
@@ -3738,6 +3743,9 @@ func (t *Terminal) Loop() error {
 						t.printHeader()
 					case reqActivate:
 						t.suppress = false
+						if t.hasPreviewer() {
+							t.previewBox.Set(reqPreviewReady, nil)
+						}
 					case reqRedrawBorderLabel:
 						t.printLabel(t.border, t.borderLabel, t.borderLabelOpts, t.borderLabelLen, t.borderShape, true)
 					case reqRedrawPreviewLabel: