1 files changed, 12 insertions, 5 deletions

diff --git a/src/WixToolset.BuildTasks/DoIt.cs b/src/WixToolset.BuildTasks/DoIt.cs
index aa01f6ec..977a2326 100644
--- a/src/WixToolset.BuildTasks/DoIt.cs
+++ b/src/WixToolset.BuildTasks/DoIt.cs
@@ -171,21 +171,23 @@ namespace WixToolset.BuildTasks
 
             var serviceProvider = new WixToolsetServiceProvider();
 
-            var context = serviceProvider.GetService<ICommandLineContext>();
-
             var messaging = serviceProvider.GetService<IMessaging>();
             messaging.SetListener(this.Listener);
 
+            var arguments = serviceProvider.GetService<ICommandLineArguments>();
+            arguments.Populate(commandLineString);
+
+            var context = serviceProvider.GetService<ICommandLineContext>();
             context.Messaging = messaging;
-            context.ExtensionManager = this.CreateExtensionManagerWithStandardBackends(serviceProvider);
-            context.Arguments = commandLineString;
+            context.ExtensionManager = this.CreateExtensionManagerWithStandardBackends(serviceProvider, arguments.Extensions);
+            context.Arguments = arguments;
 
             var commandLine = serviceProvider.GetService<ICommandLine>();
             var command = commandLine.ParseStandardCommandLine(context);
             command?.Execute();
         }
 
-        private IExtensionManager CreateExtensionManagerWithStandardBackends(IServiceProvider serviceProvider)
+        private IExtensionManager CreateExtensionManagerWithStandardBackends(IServiceProvider serviceProvider, string[] extensions)
         {
             var extensionManager = serviceProvider.GetService<IExtensionManager>();
 
@@ -194,6 +196,11 @@ namespace WixToolset.BuildTasks
                 extensionManager.Add(type.Assembly);
             }
 
+            foreach (var extension in extensions)
+            {
+                extensionManager.Load(extension);
+            }
+
             return extensionManager;
         }