Merge pull request #282 from kpdecker/this-param

This param

lib/handlebars/compiler/compiler.js

@@ -240,7 +240,13 @@ Handlebars.JavaScriptCompiler = function() {};
     ID: function(id) {
       this.addDepth(id.depth);
       this.opcode('getContext', id.depth);
-      this.opcode('lookupOnContext', id.parts[0]);
+
+      var name = id.parts[0];
+      if (!name) {
+        this.opcode('pushContext');
+      } else {
+        this.opcode('lookupOnContext', id.parts[0]);
+      }
 
       for(var i=1, l=id.parts.length; i<l; i++) {
         this.opcode('lookup', id.parts[i]);

spec/qunit_spec.js

@@ -163,6 +163,20 @@ test("this keyword in paths", function() {
   shouldCompileTo(string, hash, "helloHelloHELLO", "This keyword evaluates in more complex paths");
 });
 
+test("this keyword in helpers", function() {
+  var helpers = {foo: function(value, options) {
+      return 'bar ' + value;
+  }};
+  var string = "{{#goodbyes}}{{foo this}}{{/goodbyes}}";
+  var hash = {goodbyes: ["goodbye", "Goodbye", "GOODBYE"]};
+  shouldCompileTo(string, [hash, helpers], "bar goodbyebar Goodbyebar GOODBYE",
+    "This keyword in paths evaluates to current context");
+
+  string = "{{#hellos}}{{foo this/text}}{{/hellos}}";
+  hash = {hellos: [{text: "hello"}, {text: "Hello"}, {text: "HELLO"}]};
+  shouldCompileTo(string, [hash, helpers], "bar hellobar Hellobar HELLO", "This keyword evaluates in more complex paths");
+});
+
 module("inverted sections");
 
 test("inverted sections with unset value", function() {