mml2vgm Core for .NET Core 10 patch

Core.csproj

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>net10.0</TargetFramework>
    <OutputType>Library</OutputType>
    <RootNamespace>Core</RootNamespace>
    <AssemblyName>Core</AssemblyName>
    <Platforms>AnyCPU</Platforms>
    <!-- repository supplies AssemblyInfo.cs -->
    <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
    <!-- Prevent SDK from auto-generating TargetFrameworkAttribute (avoids duplicate attribute errors) -->
    <GenerateTargetFrameworkAttribute>false</GenerateTargetFrameworkAttribute>
    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
    <LangVersion>latest</LangVersion>

    <!-- Suppress noisy/known warnings from legacy code and packaging -->
    <!-- Update this list to remove specific entries when code is cleaned up -->
    <NoWarn>$(NoWarn);CS8981;CS0108;SYSLIB0012;CS0414;CS0168;CS0219</NoWarn>
  </PropertyGroup>

  <ItemGroup>
    <!-- keep local/unmanaged dll references -->
    <Reference Include="MDSound">
      <HintPath>$(MSBuildThisFileDirectory)dll\\MDSound.dll</HintPath>
      <Private>True</Private>
    </Reference>
    <Reference Include="musicDriverInterface">
      <HintPath>$(MSBuildThisFileDirectory)dll\\musicDriverInterface.dll</HintPath>
      <Private>True</Private>
    </Reference>
  </ItemGroup>

  <ItemGroup>
    <!-- package references needed for compatibility -->
    <PackageReference Include="System.Drawing.Common" Version="7.0.0" />
  </ItemGroup>

  <ItemGroup>
    <Content Include="dll\\MDSound.dll">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </Content>
    <None Include="app.config" />
    <None Include="packages.config" />
  </ItemGroup>

  <ItemGroup>
    <!-- SDK-style will compile all .cs files by default; prevent duplicate AssemblyInfo.cs generation -->
    <Compile Remove="Properties\AssemblyInfo.cs" />    <!-- exclude local build stub when real DLL is referenced -->
  </ItemGroup>

  <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
    <DefineConstants>DEBUG;TRACE</DefineConstants>
    <DebugType>portable</DebugType>
    <Optimize>false</Optimize>
    <OutputPath>bin/Debug/</OutputPath>
  </PropertyGroup>

  <PropertyGroup Condition=" '$(Configuration)' == 'Release' ">
    <Optimize>true</Optimize>
    <DebugType>none</DebugType>
    <OutputPath>bin/Release/</OutputPath>
  </PropertyGroup>
</Project>

message.cs.patch

diff --git a/home/hiromasa/devel/dotnet/mml2vgm/mml2vgm/Core/message.cs b/home/hiromasa/devel/dotnet/mml2vgm-dotnet/mml2vgm-core/message.cs
index 94b27b8..11cb989 100644
--- a/home/hiromasa/devel/dotnet/mml2vgm/mml2vgm/Core/message.cs
+++ b/home/hiromasa/devel/dotnet/mml2vgm-dotnet/mml2vgm-core/message.cs
@@ -12,7 +12,16 @@ namespace Core
         static msg()
         {
             Assembly myAssembly = Assembly.GetEntryAssembly();
-            string path = Path.GetDirectoryName(myAssembly.Location);
+            string path = null;
+            if (myAssembly != null && !string.IsNullOrEmpty(myAssembly.Location))
+            {
+                path = Path.GetDirectoryName(myAssembly.Location);
+            }
+            // Assembly.Location is empty for single-file apps — fall back to AppContext.BaseDirectory
+            if (string.IsNullOrEmpty(path))
+            {
+                path = System.AppContext.BaseDirectory.TrimEnd(Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar);
+            }
             string lang = System.Globalization.CultureInfo.CurrentCulture.Name;
             string file = Path.Combine(path, "lang", string.Format("message.{0}.txt", lang));
             file = file.Replace('\\', Path.DirectorySeparatorChar).Replace('/', Path.DirectorySeparatorChar);