From 342b7e7e70102a109d535400126dad096a8a9a12 Mon Sep 17 00:00:00 2001
From: CanbiZ <47820557+MickLesk@users.noreply.github.com>
Date: Thu, 27 Nov 2025 15:36:14 +0100
Subject: [PATCH] Use alternate screen buffer in advanced_settings

Added tput smcup and rmcup to advanced_settings to prevent flicker between dialogs. A trap ensures the alternate screen buffer is exited on any return.
---
 misc/build.func | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/misc/build.func b/misc/build.func
index 7c7256374..7f631fda1 100644
--- a/misc/build.func
+++ b/misc/build.func
@@ -1110,6 +1110,12 @@ ensure_global_default_vars_file() {
 # - Validates all input and shows current selections
 # ------------------------------------------------------------------------------
 advanced_settings() {
+  # Enter alternate screen buffer to prevent flicker between dialogs
+  tput smcup 2>/dev/null || true
+  
+  # Trap to ensure we exit alternate screen on any exit
+  trap 'tput rmcup 2>/dev/null || true' RETURN
+  
   whiptail --backtitle "[dev] Proxmox VE Helper Scripts" --msgbox --title "Here is an instructional tip:" "To make a selection, use the Spacebar." 8 58
   # Setting Default Tag for Advanced Settings
   TAGS="community-script;${var_tags:-}"