From 6a7255afdf35fde6173eda285209c3c55b2d0c99 Mon Sep 17 00:00:00 2001
From: maj00r <maj00r@host>
Date: Mon, 31 Aug 2026 00:44:56 +0200
Subject: [PATCH] skip the optional-include regex when a scenery has no marker

---
 StarterNG/Classes/Scenery.cs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/StarterNG/Classes/Scenery.cs b/StarterNG/Classes/Scenery.cs
index 9c384cb..2743994 100644
--- a/StarterNG/Classes/Scenery.cs
+++ b/StarterNG/Classes/Scenery.cs
@@ -252,6 +252,10 @@ public class Scenery
     private string ParseAndStripOptionalIncludes(string content)
     {
         Includes.Clear();
+
+        if (content.IndexOf("$optional", StringComparison.OrdinalIgnoreCase) < 0)
+            return content;
+
         return Regex.Replace(
             content,
             @"include\s+(\S+(?:\s+\S+)*?)\s+end\s*//[^\r\n]*\$optional([^\r\n]*)\r?\n([\s\S]*?)endoptional\b",