From 7a16db9ad33af024d0e08d146b770c9c78fdcec8 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sat, 10 Jul 2010 09:01:22 -0400
Subject: [PATCH] fixing inline-loop object-in-array tests for instance
 variables. Issue #481

---
 lib/nodes.js                | 2 +-
 src/nodes.coffee            | 6 +++---
 test/test_operations.coffee | 8 ++++++++
 3 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/lib/nodes.js b/lib/nodes.js
index 12b51fc0..d77d27b4 100644
--- a/lib/nodes.js
+++ b/lib/nodes.js
@@ -1218,7 +1218,7 @@
       i = _c[0];
       l = _c[1];
       prefix = this.obj1 !== this.obj2 ? this.obj1 + '; ' : '';
-      return "!!(function(){ " + (prefix) + "for (var " + i + "=0, " + l + "=" + (this.arr1) + ".length; " + i + "<" + l + "; " + i + "++) if (" + (this.arr2) + "[" + i + "] === " + this.obj2 + ") return true; })()";
+      return "!!(function(){ " + (prefix) + "for (var " + i + "=0, " + l + "=" + (this.arr1) + ".length; " + i + "<" + l + "; " + i + "++) if (" + (this.arr2) + "[" + i + "] === " + this.obj2 + ") return true; }).call(this)";
     };
     return InNode;
   })();
diff --git a/src/nodes.coffee b/src/nodes.coffee
index 894526d0..19a843b8 100644
--- a/src/nodes.coffee
+++ b/src/nodes.coffee
@@ -136,9 +136,9 @@ exports.BaseNode: class BaseNode
   class:     'BaseNode'
   children: []
 
-  unwrap:            -> this
+  unwrap:           -> this
   isStatement:      -> no
-  isPureStatement: -> no
+  isPureStatement:  -> no
   topSensitive:     -> no
 
 #### Expressions
@@ -1079,7 +1079,7 @@ exports.InNode: class InNode extends BaseNode
     [@arr1, @arr2]: @array.compileReference o, {precompile: yes}
     [i, l]: [o.scope.freeVariable(), o.scope.freeVariable()]
     prefix: if @obj1 isnt @obj2 then @obj1 + '; ' else ''
-    "!!(function(){ ${prefix}for (var $i=0, $l=${@arr1}.length; $i<$l; $i++) if (${@arr2}[$i] === $@obj2) return true; })()"
+    "!!(function(){ ${prefix}for (var $i=0, $l=${@arr1}.length; $i<$l; $i++) if (${@arr2}[$i] === $@obj2) return true; }).call(this)"
 
 #### TryNode
 
diff --git a/test/test_operations.coffee b/test/test_operations.coffee
index 839743e6..6ed88a04 100644
--- a/test/test_operations.coffee
+++ b/test/test_operations.coffee
@@ -51,6 +51,14 @@ list: [1, 2, 7]
 result: if list[2] in [7, 10] then 100 else -1
 ok result is 100
 
+# And with array presence on an instance variable.
+obj: {
+  list: [1, 2, 3, 4, 5]
+  in_list: (value) -> value in @list
+}
+ok obj.in_list 4
+ok not obj.in_list 0
+
 # Non-spaced values still work.
 x: 10
 y: -5