Subclasses should be able to replace the compiler - this is needed so that child views are compiled using the updated semantics of the parent compiler

lib/handlebars/vm.js

@@ -523,13 +523,15 @@ Handlebars.JavaScriptCompiler = function() {};
 
     // HELPERS
 
+    compiler: JavaScriptCompiler,
+
     compileChildren: function(environment, data) {
       var children = environment.children, child, compiler;
       var compiled = [];
 
       for(var i=0, l=children.length; i<l; i++) {
         child = children[i];
-        compiler = new JavaScriptCompiler();
+        compiler = new this.compiler();
 
         compiled[i] = compiler.compile(child, data);
       }