From 96585ab4b889d26cfc57d21047ba77145097a7ee Mon Sep 17 00:00:00 2001
From: Gordon Woodhull <gordon@woodhull.com>
Date: Sat, 19 Sep 2015 23:04:06 -0400
Subject: [PATCH] do not unbox single value if multiple mode

this is the odd special case referenced in #1014
---
 src/select-menu.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/select-menu.js b/src/select-menu.js
index 91ee70f7e..c8c5bb1bf 100644
--- a/src/select-menu.js
+++ b/src/select-menu.js
@@ -113,7 +113,7 @@ dc.selectMenu = function (parent, chartGroup) {
         // check if only prompt option is selected
         if (values.length === 1 && values[0] === '') {
             values = null;
-        } else if (values.length === 1) {
+        } else if (!_multiple && values.length === 1) {
             values = values[0];
         }
         _chart.onChange(values);