From b1f8930630f12f0bed03032a0136670506158f65 Mon Sep 17 00:00:00 2001
From: Slava Kim <slava@meteor.com>
Date: Mon, 11 Nov 2013 11:43:41 -0800
Subject: [PATCH] Projection function never retains anything from passed doc.

Always does deep copy.
---
 packages/minimongo/projection.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/minimongo/projection.js b/packages/minimongo/projection.js
index 73a10c59cb..5c3dcad09b 100644
--- a/packages/minimongo/projection.js
+++ b/packages/minimongo/projection.js
@@ -25,7 +25,7 @@ LocalCollection._compileProjection = function (fields) {
           res[key] = transform(doc[key], rule);
         // Otherwise we don't even touch this subfield
       } else if (details.including)
-        res[key] = doc[key];
+        res[key] = EJSON.clone(doc[key]);
       else
         delete res[key];
     });