From 2a851067b99c3932e471f5fc1a2d40dc25a084c4 Mon Sep 17 00:00:00 2001
From: kpdecker <kpdecker@gmail.com>
Date: Sat, 1 Aug 2015 15:48:16 -0500
Subject: [PATCH] Add with block parameter support

Fixes #1042
---
 lib/handlebars/base.js | 9 ++++++---
 spec/builtins.js       | 4 ++++
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/lib/handlebars/base.js b/lib/handlebars/base.js
index a1847fc4b..c2f14eb4d 100644
--- a/lib/handlebars/base.js
+++ b/lib/handlebars/base.js
@@ -194,13 +194,16 @@ function registerDefaultHelpers(instance) {
     let fn = options.fn;
 
     if (!Utils.isEmpty(context)) {
+      let data = options.data;
       if (options.data && options.ids) {
-        let data = createFrame(options.data);
+        data = createFrame(options.data);
         data.contextPath = Utils.appendContextPath(options.data.contextPath, options.ids[0]);
-        options = {data: data};
       }
 
-      return fn(context, options);
+      return fn(context, {
+        data: data,
+        blockParams: Utils.blockParams([context], [data.contextPath])
+      });
     } else {
       return options.inverse(this);
     }
diff --git a/spec/builtins.js b/spec/builtins.js
index 46d70baac..959874326 100644
--- a/spec/builtins.js
+++ b/spec/builtins.js
@@ -47,6 +47,10 @@ describe('builtin helpers', function() {
       var string = '{{#with person}}Person is present{{else}}Person is not present{{/with}}';
       shouldCompileTo(string, {}, 'Person is not present');
     });
+    it('with provides block parameter', function() {
+      var string = '{{#with person as |foo|}}{{foo.first}} {{last}}{{/with}}';
+      shouldCompileTo(string, {person: {first: 'Alan', last: 'Johnson'}}, 'Alan Johnson');
+    });
   });
 
   describe('#each', function() {