express

Index: package/lib/utils.js
===================================================================
--- package/lib/utils.js
+++ package/lib/utils.js
@@ -119,8 +119,9 @@
  * object with `.value`, `.quality` and `.params`.
  * also includes `.originalIndex` for stable sorting
  *
  * @param {String} str
+ * @param {Number} index
  * @return {Object}
  * @api private
  */
 
@@ -156,18 +157,16 @@
   }
 
   switch (val) {
     case true:
+    case 'weak':
       fn = exports.wetag;
       break;
     case false:
       break;
     case 'strong':
       fn = exports.etag;
       break;
-    case 'weak':
-      fn = exports.wetag;
-      break;
     default:
       throw new TypeError('unknown value for etag function: ' + val);
   }
 
@@ -190,19 +189,17 @@
   }
 
   switch (val) {
     case true:
+    case 'simple':
       fn = querystring.parse;
       break;
     case false:
       fn = newObject;
       break;
     case 'extended':
       fn = parseExtendedQueryString;
       break;
-    case 'simple':
-      fn = querystring.parse;
-      break;
     default:
       throw new TypeError('unknown value for query parser function: ' + val);
   }
 
@@ -231,9 +228,10 @@
   }
 
   if (typeof val === 'string') {
     // Support comma-separated values
-    val = val.split(/ *, */);
+    val = val.split(',')
+      .map(function (v) { return v.trim() })
   }
 
   return proxyaddr.compile(val || []);
 }