lib/less/js/lib/less/tree/paren.js in less-2.3.3 vs lib/less/js/lib/less/tree/paren.js in less-2.4.0

@@ -3,11 +3,15 @@
 
 tree.Paren = function (node) {
     this.value = node;
 };
 tree.Paren.prototype = {
+    type: "Paren",
+    accept: function (visitor) {
+        this.value = visitor.visit(this.value);
+    },
     toCSS: function (env) {
-        return '(' + this.value.toCSS(env) + ')';
+        return '(' + this.value.toCSS(env).trim() + ')';
     },
     eval: function (env) {
         return new(tree.Paren)(this.value.eval(env));
     }
 };