diff --git a/ChangeLog.md b/ChangeLog.md
index 71ba294c..aa6f1e31 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -3,6 +3,12 @@ XP Compiler ChangeLog
 
 ## ?.?.? / ????-??-??
 
+## 8.2.0 / 2022-01-30
+
+* Support passing emitter-augmenting class names to the instanceFor()
+  method of `lang.ast.CompilingClassLoader`.
+  (@thekid)
+
 ## 8.1.0 / 2022-01-29
 
 * Merged PR #131: Inline nullable checks when casting - @thekid
diff --git a/src/main/php/lang/ast/CompilingClassloader.class.php b/src/main/php/lang/ast/CompilingClassloader.class.php
index 2f509f59..b8f04102 100755
--- a/src/main/php/lang/ast/CompilingClassloader.class.php
+++ b/src/main/php/lang/ast/CompilingClassloader.class.php
@@ -28,7 +28,7 @@ static function __static() {
 
   /** Creates a new instances with a given PHP runtime */
   private function __construct($emit) {
-    $this->version= str_replace('⋈', '+', $emit->getSimpleName());
+    $this->version= strtr($emit->getSimpleName(), ['⋈' => '+', '·' => '.']);
 
     Compiled::$emit[$this->version]= $emit->newInstance();
     stream_wrapper_register($this->version, Compiled::class);
@@ -242,13 +242,14 @@ public function instanceId() {
   }
 
   /**
-   * Fetch instance of classloader by path
+   * Fetch instance of classloader by version
    *
-   * @param   string path the identifier
-   * @return  lang.IClassLoader
+   * @param  string $version
+   * @return lang.IClassLoader
    */
   public static function instanceFor($version) {
-    $emit= Emitter::forRuntime($version, [XpMeta::class]);
+    sscanf($version, "%[^+]+%[^\r]", $emitter, $augmented);
+    $emit= Emitter::forRuntime($emitter, $augmented ? explode('+', $augmented) : [XpMeta::class]);
 
     $id= $emit->getName();
     if (!isset(self::$instance[$id])) {
diff --git a/src/main/php/lang/ast/Emitter.class.php b/src/main/php/lang/ast/Emitter.class.php
index 53c12927..c7cc5b1a 100755
--- a/src/main/php/lang/ast/Emitter.class.php
+++ b/src/main/php/lang/ast/Emitter.class.php
@@ -29,11 +29,10 @@ public static function forRuntime($runtime, $emitters= []) {
         $extended= ['kind' => 'class', 'extends' => [$p->loadClass($impl)], 'implements' => [], 'use' => []];
         foreach ($emitters as $class) {
           if ($class instanceof XPClass) {
-            $impl.= '⋈'.$class->getSimpleName();
+            $impl.= '⋈'.strtr($class->getName(), ['.' => '·']);
             $extended['use'][]= $class;
           } else {
-            $d= strrpos(strtr($class, '\\', '.'), '.');
-            $impl.= '⋈'.(false === $d ? $class : substr($class, $d + 1));
+            $impl.= '⋈'.strtr($class, ['.' => '·', '\\' => '·']);
             $extended['use'][]= XPClass::forName($class);
           }
         }
diff --git a/src/test/php/lang/ast/unittest/loader/CompilingClassLoaderTest.class.php b/src/test/php/lang/ast/unittest/loader/CompilingClassLoaderTest.class.php
index 6188491c..1ed682f0 100755
--- a/src/test/php/lang/ast/unittest/loader/CompilingClassLoaderTest.class.php
+++ b/src/test/php/lang/ast/unittest/loader/CompilingClassLoaderTest.class.php
@@ -54,12 +54,12 @@ public function supports_php($version) {
 
   #[Test]
   public function string_representation() {
-    Assert::equals('CompilingCL<PHP70+XpMeta>', CompilingClassLoader::instanceFor('php:7.0.0')->toString());
+    Assert::equals('CompilingCL<PHP70+lang.ast.emit.php.XpMeta>', CompilingClassLoader::instanceFor('php:7.0.0')->toString());
   }
 
   #[Test]
   public function hashcode() {
-    Assert::equals('CPHP70+XpMeta', CompilingClassLoader::instanceFor('php:7.0.0')->hashCode());
+    Assert::equals('CPHP70+lang.ast.emit.php.XpMeta', CompilingClassLoader::instanceFor('php:7.0.0')->hashCode());
   }
 
   #[Test]
@@ -77,6 +77,14 @@ public function compare() {
     Assert::equals(1, $cl->compareTo(null), 'does not equal null');
   }
 
+  #[Test]
+  public function instanced_for_augmented() {
+    Assert::equals(
+      'PHP80+lang.ast.emit.php.XpMeta',
+      CompilingClassLoader::instanceFor('php:8.0.0+lang.ast.emit.php.XpMeta')->instanceId()
+    );
+  }
+
   #[Test]
   public function package_contents() {
     $contents= $this->compile(['Tests' => '<?php namespace %s; class Tests { }'], function($loader, $types) {