Implement partial recursive lookup

lib/handlebars/compiler/javascript-compiler.js

@@ -369,7 +369,7 @@ JavaScriptCompiler.prototype = {
     var i = 0,
         len = parts.length;
 
-    if (!scoped && this.isChild && this.options.compat && !this.lastContext) {
+    if (!scoped && this.options.compat && !this.lastContext) {
       // The depthed query is expected to handle the undefined logic for the root level that
       // is implemented below, so we evaluate that directly in compat mode
       this.pushStackLiteral(this.depthedLookup(parts[i++]));
@@ -619,6 +619,9 @@ JavaScriptCompiler.prototype = {
     if (this.options.data) {
       params.push("data");
     }
+    if (this.options.compat) {
+      params.push('depths');
+    }
 
     this.push("this.invokePartial(" + params.join(", ") + ")");
   },