diff --git a/proposal/myrmidon/src/java/org/apache/ant/tasklet/engine/DefaultTskDeployer.java b/proposal/myrmidon/src/java/org/apache/ant/tasklet/engine/DefaultTskDeployer.java
index c83494c5f..6b0419530 100644
--- a/proposal/myrmidon/src/java/org/apache/ant/tasklet/engine/DefaultTskDeployer.java
+++ b/proposal/myrmidon/src/java/org/apache/ant/tasklet/engine/DefaultTskDeployer.java
@@ -151,6 +151,27 @@ public class DefaultTskDeployer
     public void deployDataType( final String name, final String location, final URL url )
         throws DeploymentException
     {
+        checkDeployment( location, url );
+        final ZipFile zipFile = getZipFileFor( url );
+        final Configuration datatypedefs = loadConfiguration( zipFile, TSKDEF_FILE );
+        
+        try
+        {
+            final Iterator datatypes = datatypedefs.getChildren( "datatype" );
+            while( datatypes.hasNext() )
+            {
+                final Configuration datatype = (Configuration)datatypes.next();
+                if( datatype.getAttribute( "name" ).equals( name ) )
+                {
+                    handleDataType( datatype, url );
+                    break;
+                }
+            }
+        }
+        catch( final ConfigurationException ce )
+        {
+            throw new DeploymentException( "Malformed taskdefs.xml", ce );
+        }
     }
     
     public void deployTasklet( final String name, final String location, final URL url )
diff --git a/proposal/myrmidon/src/java/org/apache/ant/tasks/core/RegisterDataType.java b/proposal/myrmidon/src/java/org/apache/ant/tasks/core/RegisterDataType.java
new file mode 100644
index 000000000..524cd2ab4
--- /dev/null
+++ b/proposal/myrmidon/src/java/org/apache/ant/tasks/core/RegisterDataType.java
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) The Apache Software Foundation. All rights reserved.
+ *
+ * This software is published under the terms of the Apache Software License
+ * version 1.1, a copy of which has been included with this distribution in
+ * the LICENSE file.
+ */
+package org.apache.ant.tasks.core;
+
+import java.net.URL;
+import org.apache.ant.AntException;
+import org.apache.avalon.camelot.DefaultLocator;
+import org.apache.avalon.camelot.DeploymentException;
+import org.apache.avalon.camelot.RegistryException;
+
+/**
+ * Method to register a single datatype.
+ *
+ * @author <a href="mailto:donaldp@apache.org">Peter Donald</a>
+ */
+public class RegisterDataType
+    extends AbstractResourceRegisterer
+{
+    protected void registerResource( final String name, 
+                                     final String classname, 
+                                     final URL url )
+        throws AntException, RegistryException 
+    {
+        if( null == classname )
+        {
+            try { m_engine.getTskDeployer().deployDataType( name, url.toString(), url ); }
+            catch( final DeploymentException de )
+            {
+                throw new AntException( "Failed deploying " + name + " from " + url, de );
+            }
+        }
+        else
+        {
+            final DefaultLocator locator = new DefaultLocator( classname, url );
+            m_engine.getDataTypeEngine().getRegistry().register( name, locator ); 
+        }
+    }
+}
diff --git a/proposal/myrmidon/src/make/sample.xmk b/proposal/myrmidon/src/make/sample.xmk
index 00e7316a2..247130361 100644
--- a/proposal/myrmidon/src/make/sample.xmk
+++ b/proposal/myrmidon/src/make/sample.xmk
@@ -84,6 +84,16 @@ Legal:
 
     <echo message="foo=${foo}" />
 
+    <register-datatype lib="../../dist/lib/core.tsk" 
+                       name="pattern2"
+                       classname="org.apache.ant.datatypes.Pattern" />
+
+    <property name="foo2">
+      <pattern name="*.java"/>
+    </property>
+
+    <echo message="foo2=${foo2}" />
+
   </target>
 
   <target name="property-test2">
diff --git a/proposal/myrmidon/src/manifest/taskdefs.xml b/proposal/myrmidon/src/manifest/taskdefs.xml
index eb5d6f226..5d87b7937 100644
--- a/proposal/myrmidon/src/manifest/taskdefs.xml
+++ b/proposal/myrmidon/src/manifest/taskdefs.xml
@@ -8,6 +8,7 @@
   <task name="register-tasklet" classname="org.apache.ant.tasks.core.RegisterTasklet" />
   <task name="register-converter" classname="org.apache.ant.tasks.core.RegisterConverter" />
   <task name="ant-call" classname="org.apache.ant.tasks.core.AntCall" />
+  <task name="register-datatype" classname="org.apache.ant.tasks.core.RegisterDataType" />
 
   <datatype name="pattern" classname="org.apache.ant.datatypes.Pattern" />