adding return values for destructuring assignment.

lib/nodes.js

@@ -756,7 +756,7 @@
     // object literals to a value. Peeks at their properties to assign inner names.
     // See: http://wiki.ecmascript.org/doku.php?id=harmony:destructuring
     compile_pattern_match: function compile_pattern_match(o) {
-      var _a, _b, access_class, assigns, i, idx, obj, val, val_var;
+      var _a, _b, access_class, assigns, code, i, idx, obj, val, val_var;
       val_var = o.scope.free_variable();
       assigns = [this.idt() + val_var + ' = ' + this.value.compile(o) + ';'];
       o.top = true;
@@ -781,7 +781,11 @@
         }
         assigns.push(new AssignNode(obj, val).compile(o));
       }
-      return assigns.join("\n");
+      code = assigns.join("\n");
+      if (o.returns) {
+        code += '\n' + this.idt() + 'return ' + this.variable.compile(o) + ';';
+      }
+      return code;
     },
     compile_splice: function compile_splice(o) {
       var from, l, name, plus, range, to;

src/nodes.coffee

@@ -617,7 +617,9 @@ AssignNode: exports.AssignNode: inherit BaseNode, {
         idx: new LiteralNode(idx) unless typeof idx is 'object'
         val: new ValueNode(new LiteralNode(val_var), [new access_class(idx)])
       assigns.push(new AssignNode(obj, val).compile(o))
-    assigns.join("\n")
+    code: assigns.join("\n")
+    code += '\n' + @idt() + 'return ' + @variable.compile(o) + ';' if o.returns
+    code
 
   compile_splice: (o) ->
     name:   @variable.compile(merge(o, {only_first: true}))

test/test_destructuring_assignment.coffee

@@ -7,6 +7,12 @@ ok a is -2
 ok b is -1
 
 
+func: ->
+  [a, b]: [b, a]
+
+ok func().join(' ') is '-1 -2'
+
+
 arr: [1, 2, 3]
 
 [a, b, c]: arr