Fix --version enable on ConsoleAppBuilder

Author: neuecc

sandbox/GeneratorSandbox/Program.cs

@@ -1,22 +1,21 @@
 using ConsoleAppFramework;
 using FilterShareProject;
+using System.Reflection;
+
 //using Microsoft.Extensions.DependencyInjection;
 using System.Runtime.CompilerServices;
 
-
-args = ["Output"];
-
+args = ["--version"];
+Console.WriteLine(args.Length);
+Console.WriteLine(args.AsSpan(0).Length);
 
 // ConsoleApp.ServiceProvider
 // ConsoleApp.Create(
 
 
+// ConsoleApp.Run(args, (int x, int y) => { });
 var app = ConsoleApp.Create();
-
-// var app = ConsoleApp.Create();
-
-// app.Add<MyCommands>();
-app.Add<MyCommands>();
+app.Add<MyCommands>("zzz");
 
 app.Run(args);
 

src/ConsoleAppFramework/Emitter.cs

@@ -500,7 +500,7 @@ void EmitLeafCommand(CommandWithId? command)
             {
                 if (command == null)
                 {
-                    sb.AppendLine("ShowHelp(-1);");
+                    sb.AppendLine($"if (!TryShowHelpOrVersion(args.AsSpan({depth}), -1, -1)) ShowHelp(-1);");
                 }
                 else
                 {

tests/ConsoleAppFramework.GeneratorTests/HelpTest.cs

@@ -34,6 +34,22 @@ public void Version()
    expected: """
 9999.9999999abcdefg
 
+""");
+    }
+
+    [Fact]
+    public void VersionOnBuilder()
+    {
+        var version = Assembly.GetEntryAssembly()?.GetCustomAttribute<AssemblyInformationalVersionAttribute>()?.InformationalVersion ?? "1.0.0";
+
+        verifier.Execute(code: """
+var app = ConsoleApp.Create();
+app.Run(args);
+""",
+    args: "--version",
+    expected: $$"""
+{{version}}
+
 """);
     }