Added 'log' helper - See #97

lib/handlebars/base.js

@@ -86,6 +86,10 @@ Handlebars.registerHelper('with', function(context, options) {
   return options.fn(context);
 });
 
+Handlebars.registerHelper('log', function(context) {
+  Handlebars.log(context);
+});
+
 // END(BROWSER)
 
 module.exports = Handlebars;

lib/handlebars/compiler/compiler.js

@@ -104,7 +104,8 @@ Handlebars.JavaScriptCompiler = function() {};
         'each': true,
         'if': true,
         'unless': true,
-        'with': true
+        'with': true,
+        'log': true
       };
       if (knownHelpers) {
         for (var name in knownHelpers) {

spec/qunit_spec.js

@@ -576,7 +576,11 @@ test("Invert blocks work in knownHelpers only mode", function() {
   equal(result, "bar", "'bar' should === '" + result);
 });
 
-module("built-in helpers");
+var teardown;
+module("built-in helpers", {
+  setup: function(){ teardown = null; },
+  teardown: function(){ if (teardown) { teardown(); } }
+});
 
 test("with", function() {
   var string = "{{#with person}}{{first}} {{last}}{{/with}}";
@@ -608,6 +612,19 @@ test("each", function() {
                   "each with array argument ignores the contents when empty");
 });
 
+test("log", function() {
+  var string = "{{log blah}}"
+  var hash   = { blah: "whee" };
+
+  var logArg;
+  var originalLog = Handlebars.log;
+  Handlebars.log = function(arg){ logArg = arg; }
+  teardown = function(){ Handlebars.log = originalLog; }
+
+  shouldCompileTo(string, hash, "", "log should not display");
+  equals("whee", logArg, "should call log with 'whee'");
+});
+
 test("overriding property lookup", function() {
 
 });