From b9d73fc6e9799a44260d524a3d039dc02ac65f7e Mon Sep 17 00:00:00 2001
From: Caelan Sayler <git@caesay.com>
Date: Wed, 15 May 2024 22:35:17 +0100
Subject: [PATCH] fix: Squirrel migration fails if there are files in the
 package with no extension

---
 src/Velopack.Packaging/PackageBuilder.cs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/Velopack.Packaging/PackageBuilder.cs b/src/Velopack.Packaging/PackageBuilder.cs
index 8adb2425..98d11d4d 100644
--- a/src/Velopack.Packaging/PackageBuilder.cs
+++ b/src/Velopack.Packaging/PackageBuilder.cs
@@ -346,6 +346,7 @@ public abstract class PackageBuilder<T> : ICommand<T>
         var extensions = Directory.EnumerateFiles(rootDirectory, "*", SearchOption.AllDirectories)
             .Select(p => Path.GetExtension(p).TrimStart('.').ToLower())
             .Distinct()
+            .Where(ext => !String.IsNullOrWhiteSpace(ext))
             .Select(ext => $"""  <Default Extension="{ext}" ContentType="application/octet" />""")
             .ToArray();